1 | /************************************************************************** |
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2 | |
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3 | Copyright (c) 2001-2005, Intel Corporation |
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4 | All rights reserved. |
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5 | |
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6 | Redistribution and use in source and binary forms, with or without |
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7 | modification, are permitted provided that the following conditions are met: |
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8 | |
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9 | 1. Redistributions of source code must retain the above copyright notice, |
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10 | this list of conditions and the following disclaimer. |
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11 | |
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12 | 2. Redistributions in binary form must reproduce the above copyright |
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13 | notice, this list of conditions and the following disclaimer in the |
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14 | documentation and/or other materials provided with the distribution. |
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15 | |
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16 | 3. Neither the name of the Intel Corporation nor the names of its |
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17 | contributors may be used to endorse or promote products derived from |
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18 | this software without specific prior written permission. |
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19 | |
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20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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21 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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22 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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23 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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24 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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25 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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26 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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27 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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28 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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29 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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30 | POSSIBILITY OF SUCH DAMAGE. |
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31 | |
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32 | ***************************************************************************/ |
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33 | |
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34 | /*$FreeBSD: /repoman/r/ncvs/src/sys/dev/em/if_em.c,v 1.67 2005/08/03 00:18:29 rwatson Exp $*/ |
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35 | #ifndef __rtems__ |
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36 | #include <dev/em/if_em.h> |
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37 | #else |
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38 | #include <rtems.h> |
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39 | #include "rtemscompat_defs.h" |
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40 | #include "../porting/rtemscompat.h" |
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41 | #include "if_em.h" |
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42 | #include "../porting/rtemscompat1.h" |
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43 | #include <inttypes.h> |
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44 | #endif |
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45 | |
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46 | /********************************************************************* |
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47 | * Set this to one to display debug statistics |
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48 | *********************************************************************/ |
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49 | int em_display_debug_stats = 0; |
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50 | |
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51 | /********************************************************************* |
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52 | * Linked list of board private structures for all NICs found |
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53 | *********************************************************************/ |
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54 | |
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55 | struct adapter *em_adapter_list = NULL; |
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56 | |
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57 | |
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58 | /********************************************************************* |
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59 | * Driver version |
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60 | *********************************************************************/ |
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61 | |
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62 | char em_driver_version[] = "2.1.7"; |
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63 | |
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64 | |
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65 | /********************************************************************* |
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66 | * PCI Device ID Table |
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67 | * |
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68 | * Used by probe to select devices to load on |
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69 | * Last field stores an index into em_strings |
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70 | * Last entry must be all 0s |
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71 | * |
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72 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index } |
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73 | *********************************************************************/ |
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74 | |
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75 | static em_vendor_info_t em_vendor_info_array[] = |
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76 | { |
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77 | /* Intel(R) PRO/1000 Network Connection */ |
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78 | { 0x8086, E1000_DEV_ID_82540EM, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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79 | { 0x8086, E1000_DEV_ID_82540EM_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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80 | { 0x8086, E1000_DEV_ID_82540EP, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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81 | { 0x8086, E1000_DEV_ID_82540EP_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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82 | { 0x8086, E1000_DEV_ID_82540EP_LP, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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83 | |
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84 | { 0x8086, E1000_DEV_ID_82541EI, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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85 | { 0x8086, E1000_DEV_ID_82541ER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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86 | { 0x8086, E1000_DEV_ID_82541ER_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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87 | { 0x8086, E1000_DEV_ID_82541EI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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88 | { 0x8086, E1000_DEV_ID_82541GI, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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89 | { 0x8086, E1000_DEV_ID_82541GI_LF, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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90 | { 0x8086, E1000_DEV_ID_82541GI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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91 | |
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92 | { 0x8086, E1000_DEV_ID_82542, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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93 | |
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94 | { 0x8086, E1000_DEV_ID_82543GC_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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95 | { 0x8086, E1000_DEV_ID_82543GC_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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96 | |
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97 | { 0x8086, E1000_DEV_ID_82544EI_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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98 | { 0x8086, E1000_DEV_ID_82544EI_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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99 | { 0x8086, E1000_DEV_ID_82544GC_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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100 | { 0x8086, E1000_DEV_ID_82544GC_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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101 | |
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102 | { 0x8086, E1000_DEV_ID_82545EM_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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103 | { 0x8086, E1000_DEV_ID_82545EM_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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104 | { 0x8086, E1000_DEV_ID_82545GM_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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105 | { 0x8086, E1000_DEV_ID_82545GM_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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106 | { 0x8086, E1000_DEV_ID_82545GM_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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107 | |
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108 | { 0x8086, E1000_DEV_ID_82546EB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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109 | { 0x8086, E1000_DEV_ID_82546EB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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110 | { 0x8086, E1000_DEV_ID_82546EB_QUAD_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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111 | { 0x8086, E1000_DEV_ID_82546GB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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112 | { 0x8086, E1000_DEV_ID_82546GB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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113 | { 0x8086, E1000_DEV_ID_82546GB_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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114 | { 0x8086, E1000_DEV_ID_82546GB_PCIE, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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115 | { 0x8086, E1000_DEV_ID_82546GB_QUAD_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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116 | |
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117 | { 0x8086, E1000_DEV_ID_82547EI, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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118 | { 0x8086, E1000_DEV_ID_82547EI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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119 | { 0x8086, E1000_DEV_ID_82547GI, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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120 | |
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121 | { 0x8086, E1000_DEV_ID_82573E, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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122 | { 0x8086, E1000_DEV_ID_82573E_IAMT, PCI_ANY_ID, PCI_ANY_ID, 0}, |
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123 | |
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124 | /* required last entry */ |
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125 | { 0, 0, 0, 0, 0} |
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126 | }; |
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127 | |
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128 | /********************************************************************* |
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129 | * Table of branding strings for all supported NICs. |
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130 | *********************************************************************/ |
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131 | |
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132 | static char *em_strings[] = { |
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133 | "Intel(R) PRO/1000 Network Connection" |
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134 | }; |
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135 | |
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136 | /********************************************************************* |
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137 | * Function prototypes |
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138 | *********************************************************************/ |
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139 | static int em_probe(device_t); |
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140 | static int em_attach(device_t); |
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141 | #if !defined(__rtems__) || defined(DEBUG_MODULAR) |
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142 | static int em_detach(device_t); |
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143 | #endif |
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144 | #ifndef __rtems__ |
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145 | static int em_shutdown(device_t); |
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146 | #endif |
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147 | static void em_intr(void *); |
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148 | static void em_start(struct ifnet *); |
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149 | #ifndef __rtems__ |
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150 | static int em_ioctl(struct ifnet *, u_long, caddr_t); |
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151 | #else |
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152 | static int em_ioctl(struct ifnet *, ioctl_command_t, caddr_t); |
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153 | #endif |
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154 | static void em_watchdog(struct ifnet *); |
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155 | static void em_init(void *); |
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156 | static void em_init_locked(struct adapter *); |
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157 | static void em_stop(void *); |
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158 | static void em_media_status(struct ifnet *, struct ifmediareq *); |
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159 | #ifndef __rtems__ |
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160 | static int em_media_change(struct ifnet *); |
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161 | #else |
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162 | static int em_media_change(struct ifnet *ifp, struct rtems_ifmedia *ifm); |
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163 | #endif |
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164 | static void em_identify_hardware(struct adapter *); |
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165 | static int em_allocate_pci_resources(struct adapter *); |
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166 | #ifndef __rtems__ |
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167 | static void em_free_pci_resources(struct adapter *); |
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168 | static void em_local_timer(void *); |
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169 | #endif |
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170 | static int em_hardware_init(struct adapter *); |
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171 | static void em_setup_interface(device_t, struct adapter *); |
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172 | static int em_setup_transmit_structures(struct adapter *); |
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173 | static void em_initialize_transmit_unit(struct adapter *); |
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174 | static int em_setup_receive_structures(struct adapter *); |
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175 | static void em_initialize_receive_unit(struct adapter *); |
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176 | static void em_enable_intr(struct adapter *); |
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177 | static void em_disable_intr(struct adapter *); |
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178 | static void em_free_transmit_structures(struct adapter *); |
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179 | static void em_free_receive_structures(struct adapter *); |
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180 | static void em_update_stats_counters(struct adapter *); |
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181 | static void em_clean_transmit_interrupts(struct adapter *); |
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182 | static int em_allocate_receive_structures(struct adapter *); |
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183 | static int em_allocate_transmit_structures(struct adapter *); |
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184 | static void em_process_receive_interrupts(struct adapter *, int); |
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185 | #ifndef __rtems__ |
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186 | static void em_receive_checksum(struct adapter *, |
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187 | struct em_rx_desc *, |
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188 | struct mbuf *); |
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189 | static void em_transmit_checksum_setup(struct adapter *, |
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190 | struct mbuf *, |
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191 | u_int32_t *, |
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192 | u_int32_t *); |
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193 | #endif |
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194 | static void em_set_promisc(struct adapter *); |
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195 | static void em_disable_promisc(struct adapter *); |
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196 | static void em_set_multi(struct adapter *); |
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197 | static void em_print_hw_stats(struct adapter *); |
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198 | static void em_print_link_status(struct adapter *); |
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199 | static int em_get_buf(int i, struct adapter *, |
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200 | struct mbuf *); |
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201 | #ifndef __rtems__ |
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202 | static void em_enable_vlans(struct adapter *); |
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203 | static void em_disable_vlans(struct adapter *); |
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204 | #endif |
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205 | static int em_encap(struct adapter *, struct mbuf **); |
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206 | #ifndef __rtems__ |
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207 | static void em_smartspeed(struct adapter *); |
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208 | #endif |
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209 | static int em_82547_fifo_workaround(struct adapter *, int); |
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210 | static void em_82547_update_fifo_head(struct adapter *, int); |
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211 | static int em_82547_tx_fifo_reset(struct adapter *); |
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212 | #ifndef __rtems__ |
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213 | static void em_82547_move_tail(void *arg); |
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214 | #endif |
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215 | static void em_82547_move_tail_locked(struct adapter *); |
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216 | static int em_dma_malloc(struct adapter *, bus_size_t, |
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217 | struct em_dma_alloc *, int); |
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218 | static void em_dma_free(struct adapter *, struct em_dma_alloc *); |
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219 | #ifndef __rtems__ |
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220 | static void em_print_debug_info(struct adapter *); |
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221 | #endif |
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222 | static int em_is_valid_ether_addr(u_int8_t *); |
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223 | #ifndef __rtems__ |
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224 | static int em_sysctl_stats(SYSCTL_HANDLER_ARGS); |
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225 | static int em_sysctl_debug_info(SYSCTL_HANDLER_ARGS); |
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226 | #endif |
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227 | static u_int32_t em_fill_descriptors (u_int64_t address, |
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228 | u_int32_t length, |
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229 | PDESC_ARRAY desc_array); |
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230 | #ifndef __rtems__ |
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231 | static int em_sysctl_int_delay(SYSCTL_HANDLER_ARGS); |
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232 | static void em_add_int_delay_sysctl(struct adapter *, const char *, |
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233 | const char *, struct em_int_delay_info *, |
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234 | int, int); |
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235 | #endif |
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236 | |
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237 | /********************************************************************* |
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238 | * FreeBSD Device Interface Entry Points |
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239 | *********************************************************************/ |
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240 | |
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241 | #ifndef __rtems__ |
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242 | static device_method_t em_methods[] = { |
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243 | /* Device interface */ |
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244 | DEVMETHOD(device_probe, em_probe), |
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245 | DEVMETHOD(device_attach, em_attach), |
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246 | DEVMETHOD(device_detach, em_detach), |
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247 | DEVMETHOD(device_shutdown, em_shutdown), |
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248 | {0, 0} |
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249 | }; |
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250 | |
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251 | static driver_t em_driver = { |
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252 | "em", em_methods, sizeof(struct adapter ), |
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253 | }; |
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254 | |
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255 | static devclass_t em_devclass; |
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256 | DRIVER_MODULE(em, pci, em_driver, em_devclass, 0, 0); |
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257 | MODULE_DEPEND(em, pci, 1, 1, 1); |
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258 | MODULE_DEPEND(em, ether, 1, 1, 1); |
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259 | #else |
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260 | net_drv_tbl_t METHODS = { |
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261 | n_probe : em_probe, |
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262 | n_attach : em_attach, |
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263 | #ifdef DEBUG_MODULAR |
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264 | n_detach : em_detach, |
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265 | #else |
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266 | n_detach: 0, |
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267 | #endif |
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268 | n_intr : em_intr, |
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269 | }; |
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270 | #endif |
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271 | |
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272 | /********************************************************************* |
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273 | * Tunable default values. |
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274 | *********************************************************************/ |
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275 | |
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276 | #define E1000_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000) |
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277 | #define E1000_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024) |
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278 | |
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279 | #ifndef __rtems__ |
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280 | static int em_tx_int_delay_dflt = E1000_TICKS_TO_USECS(EM_TIDV); |
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281 | static int em_rx_int_delay_dflt = E1000_TICKS_TO_USECS(EM_RDTR); |
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282 | static int em_tx_abs_int_delay_dflt = E1000_TICKS_TO_USECS(EM_TADV); |
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283 | static int em_rx_abs_int_delay_dflt = E1000_TICKS_TO_USECS(EM_RADV); |
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284 | |
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285 | TUNABLE_INT("hw.em.tx_int_delay", &em_tx_int_delay_dflt); |
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286 | TUNABLE_INT("hw.em.rx_int_delay", &em_rx_int_delay_dflt); |
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287 | TUNABLE_INT("hw.em.tx_abs_int_delay", &em_tx_abs_int_delay_dflt); |
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288 | TUNABLE_INT("hw.em.rx_abs_int_delay", &em_rx_abs_int_delay_dflt); |
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289 | #endif |
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290 | |
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291 | /********************************************************************* |
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292 | * Device identification routine |
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293 | * |
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294 | * em_probe determines if the driver should be loaded on |
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295 | * adapter based on PCI vendor/device id of the adapter. |
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296 | * |
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297 | * return BUS_PROBE_DEFAULT on success, positive on failure |
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298 | *********************************************************************/ |
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299 | |
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300 | static int |
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301 | em_probe(device_t dev) |
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302 | { |
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303 | em_vendor_info_t *ent; |
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304 | |
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305 | u_int16_t pci_vendor_id = 0; |
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306 | u_int16_t pci_device_id = 0; |
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307 | u_int16_t pci_subvendor_id = 0; |
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308 | u_int16_t pci_subdevice_id = 0; |
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309 | char adapter_name[60]; |
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310 | |
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311 | INIT_DEBUGOUT("em_probe: begin"); |
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312 | |
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313 | pci_vendor_id = pci_get_vendor(dev); |
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314 | if (pci_vendor_id != EM_VENDOR_ID) |
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315 | return(ENXIO); |
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316 | |
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317 | pci_device_id = pci_get_device(dev); |
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318 | pci_subvendor_id = pci_get_subvendor(dev); |
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319 | pci_subdevice_id = pci_get_subdevice(dev); |
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320 | |
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321 | ent = em_vendor_info_array; |
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322 | while (ent->vendor_id != 0) { |
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323 | if ((pci_vendor_id == ent->vendor_id) && |
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324 | (pci_device_id == ent->device_id) && |
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325 | |
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326 | ((pci_subvendor_id == ent->subvendor_id) || |
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327 | (ent->subvendor_id == PCI_ANY_ID)) && |
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328 | |
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329 | ((pci_subdevice_id == ent->subdevice_id) || |
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330 | (ent->subdevice_id == PCI_ANY_ID))) { |
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331 | sprintf(adapter_name, "%s, Version - %s", |
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332 | em_strings[ent->index], |
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333 | em_driver_version); |
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334 | device_set_desc_copy(dev, adapter_name); |
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335 | return(BUS_PROBE_DEFAULT); |
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336 | } |
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337 | ent++; |
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338 | } |
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339 | |
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340 | return(ENXIO); |
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341 | } |
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342 | |
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343 | /********************************************************************* |
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344 | * Device initialization routine |
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345 | * |
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346 | * The attach entry point is called when the driver is being loaded. |
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347 | * This routine identifies the type of hardware, allocates all resources |
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348 | * and initializes the hardware. |
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349 | * |
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350 | * return 0 on success, positive on failure |
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351 | *********************************************************************/ |
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352 | |
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353 | static int |
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354 | em_attach(device_t dev) |
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355 | { |
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356 | struct adapter * adapter; |
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357 | int tsize, rsize; |
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358 | int error = 0; |
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359 | |
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360 | INIT_DEBUGOUT("em_attach: begin"); |
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361 | |
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362 | /* Allocate, clear, and link in our adapter structure */ |
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363 | if (!(adapter = device_get_softc(dev))) { |
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364 | printf("em: adapter structure allocation failed\n"); |
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365 | return(ENOMEM); |
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366 | } |
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367 | #ifndef __rtems__ |
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368 | bzero(adapter, sizeof(struct adapter )); |
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369 | #else |
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370 | /* softc structure is maintained outside of this |
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371 | * and the osdep already contains vital fields (memory address) |
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372 | */ |
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373 | #endif |
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374 | adapter->dev = dev; |
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375 | adapter->osdep.dev = dev; |
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376 | adapter->unit = device_get_unit(dev); |
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377 | EM_LOCK_INIT(adapter, device_get_nameunit(dev)); |
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378 | |
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379 | if (em_adapter_list != NULL) |
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380 | em_adapter_list->prev = adapter; |
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381 | adapter->next = em_adapter_list; |
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382 | em_adapter_list = adapter; |
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383 | |
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384 | #ifndef __rtems__ |
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385 | /* SYSCTL stuff */ |
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386 | SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), |
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387 | SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), |
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388 | OID_AUTO, "debug_info", CTLTYPE_INT|CTLFLAG_RW, |
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389 | (void *)adapter, 0, |
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390 | em_sysctl_debug_info, "I", "Debug Information"); |
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391 | |
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392 | SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), |
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393 | SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), |
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394 | OID_AUTO, "stats", CTLTYPE_INT|CTLFLAG_RW, |
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395 | (void *)adapter, 0, |
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396 | em_sysctl_stats, "I", "Statistics"); |
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397 | #endif |
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398 | |
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399 | callout_init(&adapter->timer, CALLOUT_MPSAFE); |
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400 | callout_init(&adapter->tx_fifo_timer, CALLOUT_MPSAFE); |
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401 | |
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402 | /* Determine hardware revision */ |
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403 | em_identify_hardware(adapter); |
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404 | |
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405 | #ifndef __rtems__ |
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406 | /* Set up some sysctls for the tunable interrupt delays */ |
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407 | em_add_int_delay_sysctl(adapter, "rx_int_delay", |
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408 | "receive interrupt delay in usecs", &adapter->rx_int_delay, |
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409 | E1000_REG_OFFSET(&adapter->hw, RDTR), em_rx_int_delay_dflt); |
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410 | em_add_int_delay_sysctl(adapter, "tx_int_delay", |
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411 | "transmit interrupt delay in usecs", &adapter->tx_int_delay, |
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412 | E1000_REG_OFFSET(&adapter->hw, TIDV), em_tx_int_delay_dflt); |
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413 | if (adapter->hw.mac_type >= em_82540) { |
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414 | em_add_int_delay_sysctl(adapter, "rx_abs_int_delay", |
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415 | "receive interrupt delay limit in usecs", |
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416 | &adapter->rx_abs_int_delay, |
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417 | E1000_REG_OFFSET(&adapter->hw, RADV), |
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418 | em_rx_abs_int_delay_dflt); |
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419 | em_add_int_delay_sysctl(adapter, "tx_abs_int_delay", |
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420 | "transmit interrupt delay limit in usecs", |
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421 | &adapter->tx_abs_int_delay, |
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422 | E1000_REG_OFFSET(&adapter->hw, TADV), |
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423 | em_tx_abs_int_delay_dflt); |
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424 | } |
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425 | #endif |
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426 | |
---|
427 | /* Parameters (to be read from user) */ |
---|
428 | adapter->num_tx_desc = EM_MAX_TXD; |
---|
429 | adapter->num_rx_desc = EM_MAX_RXD; |
---|
430 | #ifdef __rtems__ |
---|
431 | if ( dev->d_ifconfig->rbuf_count > 0 ) { |
---|
432 | adapter->num_rx_desc = dev->d_ifconfig->rbuf_count; |
---|
433 | } |
---|
434 | if ( adapter->num_rx_desc < 80 ) |
---|
435 | adapter->num_rx_desc = 80; |
---|
436 | if ( adapter->num_rx_desc > 256 ) |
---|
437 | adapter->num_rx_desc = 256; |
---|
438 | if ( dev->d_ifconfig->xbuf_count > 0 ) { |
---|
439 | adapter->num_tx_desc = dev->d_ifconfig->xbuf_count; |
---|
440 | } |
---|
441 | if ( adapter->num_tx_desc < 80 ) |
---|
442 | adapter->num_tx_desc = 80; |
---|
443 | if ( adapter->num_tx_desc > 256 ) |
---|
444 | adapter->num_tx_desc = 256; |
---|
445 | adapter->tx_cleanup_threshold = adapter->num_tx_desc/8; |
---|
446 | #endif |
---|
447 | adapter->hw.autoneg = DO_AUTO_NEG; |
---|
448 | adapter->hw.wait_autoneg_complete = WAIT_FOR_AUTO_NEG_DEFAULT; |
---|
449 | adapter->hw.autoneg_advertised = AUTONEG_ADV_DEFAULT; |
---|
450 | adapter->hw.tbi_compatibility_en = TRUE; |
---|
451 | adapter->rx_buffer_len = EM_RXBUFFER_2048; |
---|
452 | |
---|
453 | /* |
---|
454 | * These parameters control the automatic generation(Tx) and |
---|
455 | * response(Rx) to Ethernet PAUSE frames. |
---|
456 | */ |
---|
457 | adapter->hw.fc_high_water = FC_DEFAULT_HI_THRESH; |
---|
458 | adapter->hw.fc_low_water = FC_DEFAULT_LO_THRESH; |
---|
459 | adapter->hw.fc_pause_time = FC_DEFAULT_TX_TIMER; |
---|
460 | adapter->hw.fc_send_xon = TRUE; |
---|
461 | adapter->hw.fc = em_fc_full; |
---|
462 | |
---|
463 | adapter->hw.phy_init_script = 1; |
---|
464 | adapter->hw.phy_reset_disable = FALSE; |
---|
465 | |
---|
466 | #ifndef EM_MASTER_SLAVE |
---|
467 | adapter->hw.master_slave = em_ms_hw_default; |
---|
468 | #else |
---|
469 | adapter->hw.master_slave = EM_MASTER_SLAVE; |
---|
470 | #endif |
---|
471 | /* |
---|
472 | * Set the max frame size assuming standard ethernet |
---|
473 | * sized frames |
---|
474 | */ |
---|
475 | adapter->hw.max_frame_size = |
---|
476 | ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN; |
---|
477 | |
---|
478 | adapter->hw.min_frame_size = |
---|
479 | MINIMUM_ETHERNET_PACKET_SIZE + ETHER_CRC_LEN; |
---|
480 | |
---|
481 | /* |
---|
482 | * This controls when hardware reports transmit completion |
---|
483 | * status. |
---|
484 | */ |
---|
485 | adapter->hw.report_tx_early = 1; |
---|
486 | |
---|
487 | |
---|
488 | if (em_allocate_pci_resources(adapter)) { |
---|
489 | printf("em%d: Allocation of PCI resources failed\n", |
---|
490 | adapter->unit); |
---|
491 | error = ENXIO; |
---|
492 | goto err_pci; |
---|
493 | } |
---|
494 | |
---|
495 | |
---|
496 | /* Initialize eeprom parameters */ |
---|
497 | em_init_eeprom_params(&adapter->hw); |
---|
498 | |
---|
499 | tsize = EM_ROUNDUP(adapter->num_tx_desc * |
---|
500 | sizeof(struct em_tx_desc), 4096); |
---|
501 | |
---|
502 | /* Allocate Transmit Descriptor ring */ |
---|
503 | if (em_dma_malloc(adapter, tsize, &adapter->txdma, BUS_DMA_NOWAIT)) { |
---|
504 | printf("em%d: Unable to allocate tx_desc memory\n", |
---|
505 | adapter->unit); |
---|
506 | error = ENOMEM; |
---|
507 | goto err_tx_desc; |
---|
508 | } |
---|
509 | adapter->tx_desc_base = (struct em_tx_desc *) adapter->txdma.dma_vaddr; |
---|
510 | |
---|
511 | rsize = EM_ROUNDUP(adapter->num_rx_desc * |
---|
512 | sizeof(struct em_rx_desc), 4096); |
---|
513 | |
---|
514 | /* Allocate Receive Descriptor ring */ |
---|
515 | if (em_dma_malloc(adapter, rsize, &adapter->rxdma, BUS_DMA_NOWAIT)) { |
---|
516 | printf("em%d: Unable to allocate rx_desc memory\n", |
---|
517 | adapter->unit); |
---|
518 | error = ENOMEM; |
---|
519 | goto err_rx_desc; |
---|
520 | } |
---|
521 | adapter->rx_desc_base = (struct em_rx_desc *) adapter->rxdma.dma_vaddr; |
---|
522 | |
---|
523 | /* Initialize the hardware */ |
---|
524 | if (em_hardware_init(adapter)) { |
---|
525 | printf("em%d: Unable to initialize the hardware\n", |
---|
526 | adapter->unit); |
---|
527 | error = EIO; |
---|
528 | goto err_hw_init; |
---|
529 | } |
---|
530 | |
---|
531 | /* Copy the permanent MAC address out of the EEPROM */ |
---|
532 | if (em_read_mac_addr(&adapter->hw) < 0) { |
---|
533 | printf("em%d: EEPROM read error while reading mac address\n", |
---|
534 | adapter->unit); |
---|
535 | error = EIO; |
---|
536 | goto err_mac_addr; |
---|
537 | } |
---|
538 | |
---|
539 | #ifdef __rtems__ |
---|
540 | /* if the configuration has not set a mac address, copy the permanent |
---|
541 | * address from the device to the arpcom struct. |
---|
542 | */ |
---|
543 | { |
---|
544 | int i; |
---|
545 | for ( i=0; i<ETHER_ADDR_LEN; i++ ) { |
---|
546 | if ( adapter->arpcom.ac_enaddr[i] ) |
---|
547 | break; |
---|
548 | } |
---|
549 | if ( i >= ETHER_ADDR_LEN ) { |
---|
550 | /* all nulls */ |
---|
551 | bcopy(adapter->hw.mac_addr, adapter->arpcom.ac_enaddr, |
---|
552 | ETHER_ADDR_LEN); |
---|
553 | } |
---|
554 | } |
---|
555 | #endif |
---|
556 | |
---|
557 | if (!em_is_valid_ether_addr(adapter->hw.mac_addr)) { |
---|
558 | printf("em%d: Invalid mac address\n", adapter->unit); |
---|
559 | error = EIO; |
---|
560 | goto err_mac_addr; |
---|
561 | } |
---|
562 | |
---|
563 | /* Setup OS specific network interface */ |
---|
564 | em_setup_interface(dev, adapter); |
---|
565 | |
---|
566 | /* Initialize statistics */ |
---|
567 | em_clear_hw_cntrs(&adapter->hw); |
---|
568 | em_update_stats_counters(adapter); |
---|
569 | adapter->hw.get_link_status = 1; |
---|
570 | #ifndef __rtems__ |
---|
571 | em_check_for_link(&adapter->hw); |
---|
572 | #else |
---|
573 | /* first check during hw init usually fails - probably we need to wait longer; |
---|
574 | * could take a while till the link is up, depends on the partner? |
---|
575 | * in any case, rather than waiting here we just proceed... |
---|
576 | */ |
---|
577 | em_check_for_link(&adapter->hw); |
---|
578 | /* em_check_for_link doesn't update 'link_active' |
---|
579 | * -- they usually call em_print_link_status() right |
---|
580 | * after check_for_link, so let's repeat this |
---|
581 | * algorithm here. |
---|
582 | */ |
---|
583 | em_print_link_status(adapter); |
---|
584 | #endif |
---|
585 | |
---|
586 | /* Print the link status */ |
---|
587 | if (adapter->link_active == 1) { |
---|
588 | em_get_speed_and_duplex(&adapter->hw, &adapter->link_speed, |
---|
589 | &adapter->link_duplex); |
---|
590 | printf("em%d: Speed:%d Mbps Duplex:%s\n", |
---|
591 | adapter->unit, |
---|
592 | adapter->link_speed, |
---|
593 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half"); |
---|
594 | } else |
---|
595 | printf("em%d: Speed:N/A Duplex:N/A\n", adapter->unit); |
---|
596 | |
---|
597 | /* Identify 82544 on PCIX */ |
---|
598 | em_get_bus_info(&adapter->hw); |
---|
599 | if(adapter->hw.bus_type == em_bus_type_pcix && |
---|
600 | adapter->hw.mac_type == em_82544) { |
---|
601 | adapter->pcix_82544 = TRUE; |
---|
602 | } |
---|
603 | else { |
---|
604 | adapter->pcix_82544 = FALSE; |
---|
605 | } |
---|
606 | INIT_DEBUGOUT("em_attach: end"); |
---|
607 | return(0); |
---|
608 | |
---|
609 | err_mac_addr: |
---|
610 | err_hw_init: |
---|
611 | em_dma_free(adapter, &adapter->rxdma); |
---|
612 | err_rx_desc: |
---|
613 | em_dma_free(adapter, &adapter->txdma); |
---|
614 | err_tx_desc: |
---|
615 | err_pci: |
---|
616 | #ifndef __rtems__ |
---|
617 | em_free_pci_resources(adapter); |
---|
618 | #endif |
---|
619 | return(error); |
---|
620 | |
---|
621 | } |
---|
622 | |
---|
623 | /********************************************************************* |
---|
624 | * Device removal routine |
---|
625 | * |
---|
626 | * The detach entry point is called when the driver is being removed. |
---|
627 | * This routine stops the adapter and deallocates all the resources |
---|
628 | * that were allocated for driver operation. |
---|
629 | * |
---|
630 | * return 0 on success, positive on failure |
---|
631 | *********************************************************************/ |
---|
632 | |
---|
633 | #if !defined(__rtems__) || defined(DEBUG_MODULAR) |
---|
634 | |
---|
635 | static int |
---|
636 | em_detach(device_t dev) |
---|
637 | { |
---|
638 | struct adapter * adapter = device_get_softc(dev); |
---|
639 | struct ifnet *ifp = &adapter->arpcom.ac_if; |
---|
640 | |
---|
641 | INIT_DEBUGOUT("em_detach: begin"); |
---|
642 | |
---|
643 | EM_LOCK(adapter); |
---|
644 | adapter->in_detach = 1; |
---|
645 | em_stop(adapter); |
---|
646 | em_phy_hw_reset(&adapter->hw); |
---|
647 | EM_UNLOCK(adapter); |
---|
648 | #ifndef __rtems__ |
---|
649 | #if __FreeBSD_version < 500000 |
---|
650 | ether_ifdetach(adapter->ifp, ETHER_BPF_SUPPORTED); |
---|
651 | #else |
---|
652 | ether_ifdetach(adapter->ifp); |
---|
653 | if_free(ifp); |
---|
654 | #endif |
---|
655 | em_free_pci_resources(adapter); |
---|
656 | bus_generic_detach(dev); |
---|
657 | #else |
---|
658 | ether_ifdetach(ifp); |
---|
659 | #endif |
---|
660 | |
---|
661 | /* Free Transmit Descriptor ring */ |
---|
662 | if (adapter->tx_desc_base) { |
---|
663 | em_dma_free(adapter, &adapter->txdma); |
---|
664 | adapter->tx_desc_base = NULL; |
---|
665 | } |
---|
666 | |
---|
667 | /* Free Receive Descriptor ring */ |
---|
668 | if (adapter->rx_desc_base) { |
---|
669 | em_dma_free(adapter, &adapter->rxdma); |
---|
670 | adapter->rx_desc_base = NULL; |
---|
671 | } |
---|
672 | |
---|
673 | /* Remove from the adapter list */ |
---|
674 | if (em_adapter_list == adapter) |
---|
675 | em_adapter_list = adapter->next; |
---|
676 | if (adapter->next != NULL) |
---|
677 | adapter->next->prev = adapter->prev; |
---|
678 | if (adapter->prev != NULL) |
---|
679 | adapter->prev->next = adapter->next; |
---|
680 | |
---|
681 | EM_LOCK_DESTROY(adapter); |
---|
682 | |
---|
683 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
---|
684 | ifp->if_timer = 0; |
---|
685 | |
---|
686 | return(0); |
---|
687 | } |
---|
688 | |
---|
689 | #endif |
---|
690 | |
---|
691 | #ifndef __rtems__ |
---|
692 | /********************************************************************* |
---|
693 | * |
---|
694 | * Shutdown entry point |
---|
695 | * |
---|
696 | **********************************************************************/ |
---|
697 | |
---|
698 | static int |
---|
699 | em_shutdown(device_t dev) |
---|
700 | { |
---|
701 | struct adapter *adapter = device_get_softc(dev); |
---|
702 | EM_LOCK(adapter); |
---|
703 | em_stop(adapter); |
---|
704 | EM_UNLOCK(adapter); |
---|
705 | return(0); |
---|
706 | } |
---|
707 | #endif |
---|
708 | |
---|
709 | /********************************************************************* |
---|
710 | * Transmit entry point |
---|
711 | * |
---|
712 | * em_start is called by the stack to initiate a transmit. |
---|
713 | * The driver will remain in this routine as long as there are |
---|
714 | * packets to transmit and transmit resources are available. |
---|
715 | * In case resources are not available stack is notified and |
---|
716 | * the packet is requeued. |
---|
717 | **********************************************************************/ |
---|
718 | |
---|
719 | static void |
---|
720 | em_start_locked(struct ifnet *ifp) |
---|
721 | { |
---|
722 | struct mbuf *m_head; |
---|
723 | struct adapter *adapter = ifp->if_softc; |
---|
724 | |
---|
725 | mtx_assert(&adapter->mtx, MA_OWNED); |
---|
726 | |
---|
727 | if (!adapter->link_active) |
---|
728 | return; |
---|
729 | |
---|
730 | while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { |
---|
731 | |
---|
732 | IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); |
---|
733 | |
---|
734 | if (m_head == NULL) break; |
---|
735 | |
---|
736 | /* |
---|
737 | * em_encap() can modify our pointer, and or make it NULL on |
---|
738 | * failure. In that event, we can't requeue. |
---|
739 | */ |
---|
740 | if (em_encap(adapter, &m_head)) { |
---|
741 | if (m_head == NULL) |
---|
742 | break; |
---|
743 | ifp->if_flags |= IFF_OACTIVE; |
---|
744 | IFQ_DRV_PREPEND(&ifp->if_snd, m_head); |
---|
745 | break; |
---|
746 | } |
---|
747 | |
---|
748 | /* Send a copy of the frame to the BPF listener */ |
---|
749 | #if __FreeBSD_version < 500000 && !defined(__rtems__) |
---|
750 | if (ifp->if_bpf) |
---|
751 | bpf_mtap(ifp, m_head); |
---|
752 | #else |
---|
753 | BPF_MTAP(ifp, m_head); |
---|
754 | #endif |
---|
755 | |
---|
756 | /* Set timeout in case hardware has problems transmitting */ |
---|
757 | ifp->if_timer = EM_TX_TIMEOUT; |
---|
758 | |
---|
759 | } |
---|
760 | return; |
---|
761 | } |
---|
762 | |
---|
763 | static void |
---|
764 | em_start(struct ifnet *ifp) |
---|
765 | { |
---|
766 | struct adapter *adapter RTEMS_UNUSED = ifp->if_softc; |
---|
767 | |
---|
768 | EM_LOCK(adapter); |
---|
769 | em_start_locked(ifp); |
---|
770 | EM_UNLOCK(adapter); |
---|
771 | return; |
---|
772 | } |
---|
773 | |
---|
774 | /********************************************************************* |
---|
775 | * Ioctl entry point |
---|
776 | * |
---|
777 | * em_ioctl is called when the user wants to configure the |
---|
778 | * interface. |
---|
779 | * |
---|
780 | * return 0 on success, positive on failure |
---|
781 | **********************************************************************/ |
---|
782 | |
---|
783 | #ifndef __rtems__ |
---|
784 | static int |
---|
785 | em_ioctl(struct ifnet *ifp, u_long command, caddr_t data) |
---|
786 | #else |
---|
787 | static int |
---|
788 | em_ioctl(struct ifnet *ifp, ioctl_command_t command, caddr_t data) |
---|
789 | #endif |
---|
790 | { |
---|
791 | #ifndef __rtems__ |
---|
792 | int mask, reinit, error = 0; |
---|
793 | #else |
---|
794 | int error = 0; |
---|
795 | #endif |
---|
796 | struct ifreq *ifr = (struct ifreq *) data; |
---|
797 | struct adapter * adapter = ifp->if_softc; |
---|
798 | |
---|
799 | if (adapter->in_detach) return(error); |
---|
800 | |
---|
801 | switch (command) { |
---|
802 | case SIOCSIFADDR: |
---|
803 | case SIOCGIFADDR: |
---|
804 | IOCTL_DEBUGOUT("ioctl rcv'd: SIOCxIFADDR (Get/Set Interface Addr)"); |
---|
805 | ether_ioctl(ifp, command, data); |
---|
806 | break; |
---|
807 | case SIOCSIFMTU: |
---|
808 | IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)"); |
---|
809 | if (ifr->ifr_mtu > MAX_JUMBO_FRAME_SIZE - ETHER_HDR_LEN || \ |
---|
810 | /* 82573 does not support jumbo frames */ |
---|
811 | (adapter->hw.mac_type == em_82573 && ifr->ifr_mtu > ETHERMTU) ) { |
---|
812 | error = EINVAL; |
---|
813 | } else { |
---|
814 | EM_LOCK(adapter); |
---|
815 | ifp->if_mtu = ifr->ifr_mtu; |
---|
816 | adapter->hw.max_frame_size = |
---|
817 | ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; |
---|
818 | em_init_locked(adapter); |
---|
819 | EM_UNLOCK(adapter); |
---|
820 | } |
---|
821 | break; |
---|
822 | case SIOCSIFFLAGS: |
---|
823 | IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFFLAGS (Set Interface Flags)"); |
---|
824 | EM_LOCK(adapter); |
---|
825 | if (ifp->if_flags & IFF_UP) { |
---|
826 | if (!(ifp->if_flags & IFF_RUNNING)) { |
---|
827 | em_init_locked(adapter); |
---|
828 | } |
---|
829 | |
---|
830 | em_disable_promisc(adapter); |
---|
831 | em_set_promisc(adapter); |
---|
832 | } else { |
---|
833 | if (ifp->if_flags & IFF_RUNNING) { |
---|
834 | em_stop(adapter); |
---|
835 | } |
---|
836 | } |
---|
837 | EM_UNLOCK(adapter); |
---|
838 | break; |
---|
839 | case SIOCADDMULTI: |
---|
840 | case SIOCDELMULTI: |
---|
841 | #ifdef __rtems__ |
---|
842 | if ( (error = ( SIOCADDMULTI == command ? |
---|
843 | ether_addmulti( ifr, (struct arpcom*)ifp ) : |
---|
844 | ether_delmulti( ifr, (struct arpcom*)ifp ) ) ) ) { |
---|
845 | if ( ENETRESET == error ) |
---|
846 | error = 0; |
---|
847 | else |
---|
848 | break; |
---|
849 | } |
---|
850 | #endif |
---|
851 | IOCTL_DEBUGOUT("ioctl rcv'd: SIOC(ADD|DEL)MULTI"); |
---|
852 | if (ifp->if_flags & IFF_RUNNING) { |
---|
853 | EM_LOCK(adapter); |
---|
854 | em_disable_intr(adapter); |
---|
855 | em_set_multi(adapter); |
---|
856 | if (adapter->hw.mac_type == em_82542_rev2_0) { |
---|
857 | em_initialize_receive_unit(adapter); |
---|
858 | } |
---|
859 | #ifdef DEVICE_POLLING |
---|
860 | if (!(ifp->if_flags & IFF_POLLING)) |
---|
861 | #endif |
---|
862 | em_enable_intr(adapter); |
---|
863 | EM_UNLOCK(adapter); |
---|
864 | } |
---|
865 | break; |
---|
866 | #ifndef __rtems__ |
---|
867 | case SIOCSIFMEDIA: |
---|
868 | case SIOCGIFMEDIA: |
---|
869 | IOCTL_DEBUGOUT("ioctl rcv'd: SIOCxIFMEDIA (Get/Set Interface Media)"); |
---|
870 | error = ifmedia_ioctl(ifp, ifr, &adapter->media, command); |
---|
871 | break; |
---|
872 | #else |
---|
873 | case SIOCSIFMEDIA: |
---|
874 | { |
---|
875 | struct rtems_ifmedia mhack; |
---|
876 | mhack.ifm_media = ifr->ifr_media; |
---|
877 | error = em_media_change(ifp, &mhack); |
---|
878 | } |
---|
879 | break; |
---|
880 | case SIOCGIFMEDIA: |
---|
881 | { |
---|
882 | struct ifmediareq ifmr; |
---|
883 | em_media_status(ifp, &ifmr); |
---|
884 | ifr->ifr_media = ifmr.ifm_active; |
---|
885 | /* add-in rtems flags */ |
---|
886 | if ( adapter->link_active ) |
---|
887 | ifr->ifr_media |= IFM_LINK_OK; |
---|
888 | if ( !adapter->hw.autoneg ) |
---|
889 | ifr->ifr_media |= IFM_ANEG_DIS; |
---|
890 | error = 0; |
---|
891 | } |
---|
892 | break; |
---|
893 | #endif |
---|
894 | #ifndef __rtems__ |
---|
895 | case SIOCSIFCAP: |
---|
896 | IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)"); |
---|
897 | reinit = 0; |
---|
898 | mask = ifr->ifr_reqcap ^ ifp->if_capenable; |
---|
899 | if (mask & IFCAP_POLLING) |
---|
900 | ifp->if_capenable ^= IFCAP_POLLING; |
---|
901 | if (mask & IFCAP_HWCSUM) { |
---|
902 | ifp->if_capenable ^= IFCAP_HWCSUM; |
---|
903 | reinit = 1; |
---|
904 | } |
---|
905 | if (mask & IFCAP_VLAN_HWTAGGING) { |
---|
906 | ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; |
---|
907 | reinit = 1; |
---|
908 | } |
---|
909 | if (reinit && (ifp->if_flags & IFF_RUNNING)) |
---|
910 | em_init(adapter); |
---|
911 | break; |
---|
912 | #endif |
---|
913 | |
---|
914 | #ifdef __rtems__ |
---|
915 | case SIO_RTEMS_SHOW_STATS: |
---|
916 | em_print_hw_stats(adapter); |
---|
917 | error = 0; |
---|
918 | break; |
---|
919 | #endif |
---|
920 | |
---|
921 | default: |
---|
922 | IOCTL_DEBUGOUT1("ioctl received: UNKNOWN (0x%x)", (int)command); |
---|
923 | error = EINVAL; |
---|
924 | } |
---|
925 | |
---|
926 | return(error); |
---|
927 | } |
---|
928 | |
---|
929 | /********************************************************************* |
---|
930 | * Watchdog entry point |
---|
931 | * |
---|
932 | * This routine is called whenever hardware quits transmitting. |
---|
933 | * |
---|
934 | **********************************************************************/ |
---|
935 | |
---|
936 | static void |
---|
937 | em_watchdog(struct ifnet *ifp) |
---|
938 | { |
---|
939 | struct adapter * adapter; |
---|
940 | adapter = ifp->if_softc; |
---|
941 | |
---|
942 | /* If we are in this routine because of pause frames, then |
---|
943 | * don't reset the hardware. |
---|
944 | */ |
---|
945 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF) { |
---|
946 | ifp->if_timer = EM_TX_TIMEOUT; |
---|
947 | return; |
---|
948 | } |
---|
949 | |
---|
950 | if (em_check_for_link(&adapter->hw)) |
---|
951 | printf("em%d: watchdog timeout -- resetting\n", adapter->unit); |
---|
952 | |
---|
953 | ifp->if_flags &= ~IFF_RUNNING; |
---|
954 | |
---|
955 | em_init(adapter); |
---|
956 | |
---|
957 | ifp->if_oerrors++; |
---|
958 | return; |
---|
959 | } |
---|
960 | |
---|
961 | /********************************************************************* |
---|
962 | * Init entry point |
---|
963 | * |
---|
964 | * This routine is used in two ways. It is used by the stack as |
---|
965 | * init entry point in network interface structure. It is also used |
---|
966 | * by the driver as a hw/sw initialization routine to get to a |
---|
967 | * consistent state. |
---|
968 | * |
---|
969 | * return 0 on success, positive on failure |
---|
970 | **********************************************************************/ |
---|
971 | |
---|
972 | static void |
---|
973 | em_init_locked(struct adapter * adapter) |
---|
974 | { |
---|
975 | struct ifnet *ifp; |
---|
976 | |
---|
977 | uint32_t pba; |
---|
978 | ifp = &adapter->arpcom.ac_if; |
---|
979 | |
---|
980 | INIT_DEBUGOUT("em_init: begin"); |
---|
981 | |
---|
982 | mtx_assert(&adapter->mtx, MA_OWNED); |
---|
983 | |
---|
984 | em_stop(adapter); |
---|
985 | |
---|
986 | /* Packet Buffer Allocation (PBA) |
---|
987 | * Writing PBA sets the receive portion of the buffer |
---|
988 | * the remainder is used for the transmit buffer. |
---|
989 | * |
---|
990 | * Devices before the 82547 had a Packet Buffer of 64K. |
---|
991 | * Default allocation: PBA=48K for Rx, leaving 16K for Tx. |
---|
992 | * After the 82547 the buffer was reduced to 40K. |
---|
993 | * Default allocation: PBA=30K for Rx, leaving 10K for Tx. |
---|
994 | * Note: default does not leave enough room for Jumbo Frame >10k. |
---|
995 | */ |
---|
996 | if(adapter->hw.mac_type < em_82547) { |
---|
997 | /* Total FIFO is 64K */ |
---|
998 | if(adapter->rx_buffer_len > EM_RXBUFFER_8192) |
---|
999 | pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */ |
---|
1000 | else |
---|
1001 | pba = E1000_PBA_48K; /* 48K for Rx, 16K for Tx */ |
---|
1002 | } else { |
---|
1003 | /* Total FIFO is 40K */ |
---|
1004 | if(adapter->hw.max_frame_size > EM_RXBUFFER_8192) { |
---|
1005 | pba = E1000_PBA_22K; /* 22K for Rx, 18K for Tx */ |
---|
1006 | } else { |
---|
1007 | pba = E1000_PBA_30K; /* 30K for Rx, 10K for Tx */ |
---|
1008 | } |
---|
1009 | adapter->tx_fifo_head = 0; |
---|
1010 | adapter->tx_head_addr = pba << EM_TX_HEAD_ADDR_SHIFT; |
---|
1011 | adapter->tx_fifo_size = (E1000_PBA_40K - pba) << EM_PBA_BYTES_SHIFT; |
---|
1012 | } |
---|
1013 | INIT_DEBUGOUT1("em_init: pba=%" PRId32 "K",pba); |
---|
1014 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
---|
1015 | |
---|
1016 | /* Get the latest mac address, User can use a LAA */ |
---|
1017 | bcopy(adapter->arpcom.ac_enaddr, adapter->hw.mac_addr, |
---|
1018 | ETHER_ADDR_LEN); |
---|
1019 | |
---|
1020 | /* Initialize the hardware */ |
---|
1021 | if (em_hardware_init(adapter)) { |
---|
1022 | printf("em%d: Unable to initialize the hardware\n", |
---|
1023 | adapter->unit); |
---|
1024 | return; |
---|
1025 | } |
---|
1026 | |
---|
1027 | #ifndef __rtems__ |
---|
1028 | if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) |
---|
1029 | em_enable_vlans(adapter); |
---|
1030 | #endif |
---|
1031 | |
---|
1032 | /* Prepare transmit descriptors and buffers */ |
---|
1033 | if (em_setup_transmit_structures(adapter)) { |
---|
1034 | printf("em%d: Could not setup transmit structures\n", |
---|
1035 | adapter->unit); |
---|
1036 | em_stop(adapter); |
---|
1037 | return; |
---|
1038 | } |
---|
1039 | em_initialize_transmit_unit(adapter); |
---|
1040 | |
---|
1041 | /* Setup Multicast table */ |
---|
1042 | em_set_multi(adapter); |
---|
1043 | |
---|
1044 | /* Prepare receive descriptors and buffers */ |
---|
1045 | if (em_setup_receive_structures(adapter)) { |
---|
1046 | printf("em%d: Could not setup receive structures\n", |
---|
1047 | adapter->unit); |
---|
1048 | em_stop(adapter); |
---|
1049 | return; |
---|
1050 | } |
---|
1051 | em_initialize_receive_unit(adapter); |
---|
1052 | |
---|
1053 | /* Don't loose promiscuous settings */ |
---|
1054 | em_set_promisc(adapter); |
---|
1055 | |
---|
1056 | ifp->if_flags |= IFF_RUNNING; |
---|
1057 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
1058 | |
---|
1059 | #ifndef __rtems__ |
---|
1060 | if (adapter->hw.mac_type >= em_82543) { |
---|
1061 | if (ifp->if_capenable & IFCAP_TXCSUM) |
---|
1062 | ifp->if_hwassist = EM_CHECKSUM_FEATURES; |
---|
1063 | else |
---|
1064 | ifp->if_hwassist = 0; |
---|
1065 | } |
---|
1066 | #endif |
---|
1067 | |
---|
1068 | callout_reset(&adapter->timer, hz, em_local_timer, adapter); |
---|
1069 | em_clear_hw_cntrs(&adapter->hw); |
---|
1070 | #ifdef DEVICE_POLLING |
---|
1071 | /* |
---|
1072 | * Only enable interrupts if we are not polling, make sure |
---|
1073 | * they are off otherwise. |
---|
1074 | */ |
---|
1075 | if (ifp->if_flags & IFF_POLLING) |
---|
1076 | em_disable_intr(adapter); |
---|
1077 | else |
---|
1078 | #endif /* DEVICE_POLLING */ |
---|
1079 | em_enable_intr(adapter); |
---|
1080 | |
---|
1081 | /* Don't reset the phy next time init gets called */ |
---|
1082 | adapter->hw.phy_reset_disable = TRUE; |
---|
1083 | |
---|
1084 | return; |
---|
1085 | } |
---|
1086 | |
---|
1087 | static void |
---|
1088 | em_init(void *arg) |
---|
1089 | { |
---|
1090 | struct adapter * adapter = arg; |
---|
1091 | |
---|
1092 | EM_LOCK(adapter); |
---|
1093 | em_init_locked(adapter); |
---|
1094 | EM_UNLOCK(adapter); |
---|
1095 | return; |
---|
1096 | } |
---|
1097 | |
---|
1098 | |
---|
1099 | #ifdef DEVICE_POLLING |
---|
1100 | static poll_handler_t em_poll; |
---|
1101 | |
---|
1102 | static void |
---|
1103 | em_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count) |
---|
1104 | { |
---|
1105 | struct adapter *adapter = ifp->if_softc; |
---|
1106 | u_int32_t reg_icr; |
---|
1107 | |
---|
1108 | mtx_assert(&adapter->mtx, MA_OWNED); |
---|
1109 | |
---|
1110 | if (!(ifp->if_capenable & IFCAP_POLLING)) { |
---|
1111 | ether_poll_deregister(ifp); |
---|
1112 | cmd = POLL_DEREGISTER; |
---|
1113 | } |
---|
1114 | if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ |
---|
1115 | em_enable_intr(adapter); |
---|
1116 | return; |
---|
1117 | } |
---|
1118 | if (cmd == POLL_AND_CHECK_STATUS) { |
---|
1119 | reg_icr = E1000_READ_REG(&adapter->hw, ICR); |
---|
1120 | if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
---|
1121 | callout_stop(&adapter->timer); |
---|
1122 | adapter->hw.get_link_status = 1; |
---|
1123 | em_check_for_link(&adapter->hw); |
---|
1124 | em_print_link_status(adapter); |
---|
1125 | callout_reset(&adapter->timer, hz, em_local_timer, adapter); |
---|
1126 | } |
---|
1127 | } |
---|
1128 | if (ifp->if_flags & IFF_RUNNING) { |
---|
1129 | em_process_receive_interrupts(adapter, count); |
---|
1130 | em_clean_transmit_interrupts(adapter); |
---|
1131 | } |
---|
1132 | |
---|
1133 | if (ifp->if_flags & IFF_RUNNING && !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) |
---|
1134 | em_start_locked(ifp); |
---|
1135 | } |
---|
1136 | |
---|
1137 | static void |
---|
1138 | em_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) |
---|
1139 | { |
---|
1140 | struct adapter *adapter = ifp->if_softc; |
---|
1141 | |
---|
1142 | EM_LOCK(adapter); |
---|
1143 | em_poll_locked(ifp, cmd, count); |
---|
1144 | EM_UNLOCK(adapter); |
---|
1145 | } |
---|
1146 | #endif /* DEVICE_POLLING */ |
---|
1147 | |
---|
1148 | /********************************************************************* |
---|
1149 | * |
---|
1150 | * Interrupt Service routine |
---|
1151 | * |
---|
1152 | **********************************************************************/ |
---|
1153 | static void |
---|
1154 | em_intr(void *arg) |
---|
1155 | { |
---|
1156 | u_int32_t loop_cnt = EM_MAX_INTR; |
---|
1157 | u_int32_t reg_icr; |
---|
1158 | struct ifnet *ifp; |
---|
1159 | struct adapter *adapter = arg; |
---|
1160 | |
---|
1161 | EM_LOCK(adapter); |
---|
1162 | |
---|
1163 | ifp = &adapter->arpcom.ac_if; |
---|
1164 | |
---|
1165 | #ifdef DEVICE_POLLING |
---|
1166 | if (ifp->if_flags & IFF_POLLING) { |
---|
1167 | EM_UNLOCK(adapter); |
---|
1168 | return; |
---|
1169 | } |
---|
1170 | |
---|
1171 | if ((ifp->if_capenable & IFCAP_POLLING) && |
---|
1172 | ether_poll_register(em_poll, ifp)) { |
---|
1173 | em_disable_intr(adapter); |
---|
1174 | em_poll_locked(ifp, 0, 1); |
---|
1175 | EM_UNLOCK(adapter); |
---|
1176 | return; |
---|
1177 | } |
---|
1178 | #endif /* DEVICE_POLLING */ |
---|
1179 | |
---|
1180 | reg_icr = E1000_READ_REG(&adapter->hw, ICR); |
---|
1181 | if (!reg_icr) { |
---|
1182 | EM_UNLOCK(adapter); |
---|
1183 | return; |
---|
1184 | } |
---|
1185 | |
---|
1186 | /* Link status change */ |
---|
1187 | if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
---|
1188 | callout_stop(&adapter->timer); |
---|
1189 | adapter->hw.get_link_status = 1; |
---|
1190 | em_check_for_link(&adapter->hw); |
---|
1191 | em_print_link_status(adapter); |
---|
1192 | callout_reset(&adapter->timer, hz, em_local_timer, adapter); |
---|
1193 | } |
---|
1194 | |
---|
1195 | while (loop_cnt > 0) { |
---|
1196 | if (ifp->if_flags & IFF_RUNNING) { |
---|
1197 | em_process_receive_interrupts(adapter, -1); |
---|
1198 | em_clean_transmit_interrupts(adapter); |
---|
1199 | } |
---|
1200 | loop_cnt--; |
---|
1201 | } |
---|
1202 | |
---|
1203 | if (ifp->if_flags & IFF_RUNNING && !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) |
---|
1204 | em_start_locked(ifp); |
---|
1205 | |
---|
1206 | EM_UNLOCK(adapter); |
---|
1207 | return; |
---|
1208 | } |
---|
1209 | |
---|
1210 | |
---|
1211 | |
---|
1212 | /********************************************************************* |
---|
1213 | * |
---|
1214 | * Media Ioctl callback |
---|
1215 | * |
---|
1216 | * This routine is called whenever the user queries the status of |
---|
1217 | * the interface using ifconfig. |
---|
1218 | * |
---|
1219 | **********************************************************************/ |
---|
1220 | static void |
---|
1221 | em_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) |
---|
1222 | { |
---|
1223 | struct adapter * adapter = ifp->if_softc; |
---|
1224 | |
---|
1225 | INIT_DEBUGOUT("em_media_status: begin"); |
---|
1226 | |
---|
1227 | em_check_for_link(&adapter->hw); |
---|
1228 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU) { |
---|
1229 | if (adapter->link_active == 0) { |
---|
1230 | em_get_speed_and_duplex(&adapter->hw, |
---|
1231 | &adapter->link_speed, |
---|
1232 | &adapter->link_duplex); |
---|
1233 | adapter->link_active = 1; |
---|
1234 | } |
---|
1235 | } else { |
---|
1236 | if (adapter->link_active == 1) { |
---|
1237 | adapter->link_speed = 0; |
---|
1238 | adapter->link_duplex = 0; |
---|
1239 | adapter->link_active = 0; |
---|
1240 | } |
---|
1241 | } |
---|
1242 | |
---|
1243 | ifmr->ifm_status = IFM_AVALID; |
---|
1244 | ifmr->ifm_active = IFM_ETHER; |
---|
1245 | |
---|
1246 | if (!adapter->link_active) |
---|
1247 | return; |
---|
1248 | |
---|
1249 | ifmr->ifm_status |= IFM_ACTIVE; |
---|
1250 | |
---|
1251 | if (adapter->hw.media_type == em_media_type_fiber) { |
---|
1252 | ifmr->ifm_active |= IFM_1000_SX | IFM_FDX; |
---|
1253 | } else { |
---|
1254 | switch (adapter->link_speed) { |
---|
1255 | case 10: |
---|
1256 | ifmr->ifm_active |= IFM_10_T; |
---|
1257 | break; |
---|
1258 | case 100: |
---|
1259 | ifmr->ifm_active |= IFM_100_TX; |
---|
1260 | break; |
---|
1261 | case 1000: |
---|
1262 | #if __FreeBSD_version < 500000 && !defined(__rtems__) |
---|
1263 | ifmr->ifm_active |= IFM_1000_TX; |
---|
1264 | #else |
---|
1265 | ifmr->ifm_active |= IFM_1000_T; |
---|
1266 | #endif |
---|
1267 | break; |
---|
1268 | } |
---|
1269 | if (adapter->link_duplex == FULL_DUPLEX) |
---|
1270 | ifmr->ifm_active |= IFM_FDX; |
---|
1271 | else |
---|
1272 | ifmr->ifm_active |= IFM_HDX; |
---|
1273 | } |
---|
1274 | return; |
---|
1275 | } |
---|
1276 | |
---|
1277 | /********************************************************************* |
---|
1278 | * |
---|
1279 | * Media Ioctl callback |
---|
1280 | * |
---|
1281 | * This routine is called when the user changes speed/duplex using |
---|
1282 | * media/mediopt option with ifconfig. |
---|
1283 | * |
---|
1284 | **********************************************************************/ |
---|
1285 | static int |
---|
1286 | #ifndef __rtems__ |
---|
1287 | em_media_change(struct ifnet *ifp) |
---|
1288 | #else |
---|
1289 | em_media_change(struct ifnet *ifp, struct rtems_ifmedia *ifm) |
---|
1290 | #endif |
---|
1291 | { |
---|
1292 | struct adapter * adapter = ifp->if_softc; |
---|
1293 | #ifndef __rtems__ |
---|
1294 | struct ifmedia *ifm = &adapter->media; |
---|
1295 | #endif |
---|
1296 | |
---|
1297 | INIT_DEBUGOUT("em_media_change: begin"); |
---|
1298 | |
---|
1299 | if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) |
---|
1300 | return(EINVAL); |
---|
1301 | |
---|
1302 | switch (IFM_SUBTYPE(ifm->ifm_media)) { |
---|
1303 | case IFM_AUTO: |
---|
1304 | adapter->hw.autoneg = DO_AUTO_NEG; |
---|
1305 | adapter->hw.autoneg_advertised = AUTONEG_ADV_DEFAULT; |
---|
1306 | break; |
---|
1307 | case IFM_1000_SX: |
---|
1308 | #if __FreeBSD_version < 500000 && !defined(__rtems__) |
---|
1309 | case IFM_1000_TX: |
---|
1310 | #else |
---|
1311 | case IFM_1000_T: |
---|
1312 | #endif |
---|
1313 | adapter->hw.autoneg = DO_AUTO_NEG; |
---|
1314 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; |
---|
1315 | break; |
---|
1316 | case IFM_100_TX: |
---|
1317 | adapter->hw.autoneg = FALSE; |
---|
1318 | adapter->hw.autoneg_advertised = 0; |
---|
1319 | if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) |
---|
1320 | adapter->hw.forced_speed_duplex = em_100_full; |
---|
1321 | else |
---|
1322 | adapter->hw.forced_speed_duplex = em_100_half; |
---|
1323 | break; |
---|
1324 | case IFM_10_T: |
---|
1325 | adapter->hw.autoneg = FALSE; |
---|
1326 | adapter->hw.autoneg_advertised = 0; |
---|
1327 | if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) |
---|
1328 | adapter->hw.forced_speed_duplex = em_10_full; |
---|
1329 | else |
---|
1330 | adapter->hw.forced_speed_duplex = em_10_half; |
---|
1331 | break; |
---|
1332 | default: |
---|
1333 | printf("em%d: Unsupported media type\n", adapter->unit); |
---|
1334 | } |
---|
1335 | |
---|
1336 | /* As the speed/duplex settings my have changed we need to |
---|
1337 | * reset the PHY. |
---|
1338 | */ |
---|
1339 | adapter->hw.phy_reset_disable = FALSE; |
---|
1340 | |
---|
1341 | em_init(adapter); |
---|
1342 | |
---|
1343 | return(0); |
---|
1344 | } |
---|
1345 | |
---|
1346 | /********************************************************************* |
---|
1347 | * |
---|
1348 | * This routine maps the mbufs to tx descriptors. |
---|
1349 | * |
---|
1350 | * return 0 on success, positive on failure |
---|
1351 | **********************************************************************/ |
---|
1352 | static int |
---|
1353 | em_encap(struct adapter *adapter, struct mbuf **m_headp) |
---|
1354 | { |
---|
1355 | u_int32_t txd_upper; |
---|
1356 | u_int32_t txd_lower, txd_used = 0, txd_saved = 0; |
---|
1357 | int i, j, error; |
---|
1358 | u_int64_t address; |
---|
1359 | |
---|
1360 | struct mbuf *m_head; |
---|
1361 | |
---|
1362 | /* For 82544 Workaround */ |
---|
1363 | DESC_ARRAY desc_array; |
---|
1364 | u_int32_t array_elements; |
---|
1365 | u_int32_t counter; |
---|
1366 | |
---|
1367 | #ifndef __rtems__ |
---|
1368 | #if __FreeBSD_version < 500000 |
---|
1369 | struct ifvlan *ifv = NULL; |
---|
1370 | #else |
---|
1371 | struct m_tag *mtag; |
---|
1372 | #endif |
---|
1373 | #endif |
---|
1374 | bus_dma_segment_t segs[EM_MAX_SCATTER]; |
---|
1375 | #ifndef __rtems__ |
---|
1376 | bus_dmamap_t map; |
---|
1377 | #endif |
---|
1378 | int nsegs; |
---|
1379 | struct em_buffer *tx_buffer = NULL; |
---|
1380 | struct em_tx_desc *current_tx_desc = NULL; |
---|
1381 | #ifndef __rtems__ |
---|
1382 | struct ifnet *ifp = &adapter->arpcom.ac_if; |
---|
1383 | #endif |
---|
1384 | |
---|
1385 | m_head = *m_headp; |
---|
1386 | |
---|
1387 | /* |
---|
1388 | * Force a cleanup if number of TX descriptors |
---|
1389 | * available hits the threshold |
---|
1390 | */ |
---|
1391 | if (adapter->num_tx_desc_avail <= EM_TX_CLEANUP_THRESHOLD) { |
---|
1392 | em_clean_transmit_interrupts(adapter); |
---|
1393 | if (adapter->num_tx_desc_avail <= EM_TX_CLEANUP_THRESHOLD) { |
---|
1394 | adapter->no_tx_desc_avail1++; |
---|
1395 | return(ENOBUFS); |
---|
1396 | } |
---|
1397 | } |
---|
1398 | |
---|
1399 | #ifndef __rtems__ |
---|
1400 | /* |
---|
1401 | * Map the packet for DMA. |
---|
1402 | */ |
---|
1403 | if (bus_dmamap_create(adapter->txtag, BUS_DMA_NOWAIT, &map)) { |
---|
1404 | adapter->no_tx_map_avail++; |
---|
1405 | return (ENOMEM); |
---|
1406 | } |
---|
1407 | error = bus_dmamap_load_mbuf_sg(adapter->txtag, map, m_head, segs, |
---|
1408 | &nsegs, BUS_DMA_NOWAIT); |
---|
1409 | if (error != 0) { |
---|
1410 | adapter->no_tx_dma_setup++; |
---|
1411 | bus_dmamap_destroy(adapter->txtag, map); |
---|
1412 | return (error); |
---|
1413 | } |
---|
1414 | #else |
---|
1415 | (void)error; |
---|
1416 | { |
---|
1417 | struct mbuf *m; |
---|
1418 | for ( m=m_head, nsegs=0; m; m=m->m_next, nsegs++ ) { |
---|
1419 | if ( nsegs >= sizeof(segs)/sizeof(segs[0]) ) { |
---|
1420 | break; |
---|
1421 | } |
---|
1422 | segs[nsegs].ds_addr = mtod(m, unsigned); |
---|
1423 | segs[nsegs].ds_len = m->m_len; |
---|
1424 | } |
---|
1425 | } |
---|
1426 | #endif |
---|
1427 | KASSERT(nsegs != 0, ("em_encap: empty packet")); |
---|
1428 | |
---|
1429 | if (nsegs > adapter->num_tx_desc_avail) { |
---|
1430 | adapter->no_tx_desc_avail2++; |
---|
1431 | bus_dmamap_destroy(adapter->txtag, map); |
---|
1432 | return (ENOBUFS); |
---|
1433 | } |
---|
1434 | |
---|
1435 | |
---|
1436 | #ifndef __rtems__ |
---|
1437 | if (ifp->if_hwassist > 0) { |
---|
1438 | em_transmit_checksum_setup(adapter, m_head, |
---|
1439 | &txd_upper, &txd_lower); |
---|
1440 | } else |
---|
1441 | #endif |
---|
1442 | txd_upper = txd_lower = 0; |
---|
1443 | |
---|
1444 | |
---|
1445 | #ifndef __rtems__ |
---|
1446 | /* Find out if we are in vlan mode */ |
---|
1447 | #if __FreeBSD_version < 500000 |
---|
1448 | if ((m_head->m_flags & (M_PROTO1|M_PKTHDR)) == (M_PROTO1|M_PKTHDR) && |
---|
1449 | m_head->m_pkthdr.rcvif != NULL && |
---|
1450 | m_head->m_pkthdr.rcvif->if_type == IFT_L2VLAN) |
---|
1451 | ifv = m_head->m_pkthdr.rcvif->if_softc; |
---|
1452 | #else |
---|
1453 | mtag = VLAN_OUTPUT_TAG(ifp, m_head); |
---|
1454 | #endif |
---|
1455 | |
---|
1456 | /* |
---|
1457 | * When operating in promiscuous mode, hardware encapsulation for |
---|
1458 | * packets is disabled. This means we have to add the vlan |
---|
1459 | * encapsulation in the driver, since it will have come down from the |
---|
1460 | * VLAN layer with a tag instead of a VLAN header. |
---|
1461 | */ |
---|
1462 | if (mtag != NULL && adapter->em_insert_vlan_header) { |
---|
1463 | struct ether_vlan_header *evl; |
---|
1464 | struct ether_header eh; |
---|
1465 | |
---|
1466 | m_head = m_pullup(m_head, sizeof(eh)); |
---|
1467 | if (m_head == NULL) { |
---|
1468 | *m_headp = NULL; |
---|
1469 | bus_dmamap_destroy(adapter->txtag, map); |
---|
1470 | return (ENOBUFS); |
---|
1471 | } |
---|
1472 | eh = *mtod(m_head, struct ether_header *); |
---|
1473 | M_PREPEND(m_head, sizeof(*evl), M_DONTWAIT); |
---|
1474 | if (m_head == NULL) { |
---|
1475 | *m_headp = NULL; |
---|
1476 | bus_dmamap_destroy(adapter->txtag, map); |
---|
1477 | return (ENOBUFS); |
---|
1478 | } |
---|
1479 | m_head = m_pullup(m_head, sizeof(*evl)); |
---|
1480 | if (m_head == NULL) { |
---|
1481 | *m_headp = NULL; |
---|
1482 | bus_dmamap_destroy(adapter->txtag, map); |
---|
1483 | return (ENOBUFS); |
---|
1484 | } |
---|
1485 | evl = mtod(m_head, struct ether_vlan_header *); |
---|
1486 | bcopy(&eh, evl, sizeof(*evl)); |
---|
1487 | evl->evl_proto = evl->evl_encap_proto; |
---|
1488 | evl->evl_encap_proto = htons(ETHERTYPE_VLAN); |
---|
1489 | evl->evl_tag = htons(VLAN_TAG_VALUE(mtag)); |
---|
1490 | m_tag_delete(m_head, mtag); |
---|
1491 | mtag = NULL; |
---|
1492 | *m_headp = m_head; |
---|
1493 | } |
---|
1494 | #endif |
---|
1495 | |
---|
1496 | i = adapter->next_avail_tx_desc; |
---|
1497 | if (adapter->pcix_82544) { |
---|
1498 | txd_saved = i; |
---|
1499 | txd_used = 0; |
---|
1500 | } |
---|
1501 | for (j = 0; j < nsegs; j++) { |
---|
1502 | /* If adapter is 82544 and on PCIX bus */ |
---|
1503 | if(adapter->pcix_82544) { |
---|
1504 | array_elements = 0; |
---|
1505 | address = htole64(segs[j].ds_addr); |
---|
1506 | /* |
---|
1507 | * Check the Address and Length combination and |
---|
1508 | * split the data accordingly |
---|
1509 | */ |
---|
1510 | array_elements = em_fill_descriptors(address, |
---|
1511 | htole32(segs[j].ds_len), |
---|
1512 | &desc_array); |
---|
1513 | for (counter = 0; counter < array_elements; counter++) { |
---|
1514 | if (txd_used == adapter->num_tx_desc_avail) { |
---|
1515 | adapter->next_avail_tx_desc = txd_saved; |
---|
1516 | adapter->no_tx_desc_avail2++; |
---|
1517 | bus_dmamap_destroy(adapter->txtag, map); |
---|
1518 | return (ENOBUFS); |
---|
1519 | } |
---|
1520 | tx_buffer = &adapter->tx_buffer_area[i]; |
---|
1521 | current_tx_desc = &adapter->tx_desc_base[i]; |
---|
1522 | current_tx_desc->buffer_addr = htole64( |
---|
1523 | desc_array.descriptor[counter].address); |
---|
1524 | current_tx_desc->lower.data = htole32( |
---|
1525 | (adapter->txd_cmd | txd_lower | |
---|
1526 | (u_int16_t)desc_array.descriptor[counter].length)); |
---|
1527 | current_tx_desc->upper.data = htole32((txd_upper)); |
---|
1528 | if (++i == adapter->num_tx_desc) |
---|
1529 | i = 0; |
---|
1530 | |
---|
1531 | tx_buffer->m_head = NULL; |
---|
1532 | txd_used++; |
---|
1533 | } |
---|
1534 | } else { |
---|
1535 | tx_buffer = &adapter->tx_buffer_area[i]; |
---|
1536 | current_tx_desc = &adapter->tx_desc_base[i]; |
---|
1537 | |
---|
1538 | current_tx_desc->buffer_addr = htole64(segs[j].ds_addr); |
---|
1539 | current_tx_desc->lower.data = htole32( |
---|
1540 | adapter->txd_cmd | txd_lower | segs[j].ds_len); |
---|
1541 | current_tx_desc->upper.data = htole32(txd_upper); |
---|
1542 | |
---|
1543 | if (++i == adapter->num_tx_desc) |
---|
1544 | i = 0; |
---|
1545 | |
---|
1546 | tx_buffer->m_head = NULL; |
---|
1547 | } |
---|
1548 | } |
---|
1549 | |
---|
1550 | adapter->next_avail_tx_desc = i; |
---|
1551 | if (adapter->pcix_82544) { |
---|
1552 | adapter->num_tx_desc_avail -= txd_used; |
---|
1553 | } |
---|
1554 | else { |
---|
1555 | adapter->num_tx_desc_avail -= nsegs; |
---|
1556 | } |
---|
1557 | |
---|
1558 | #ifndef __rtems__ |
---|
1559 | #if __FreeBSD_version < 500000 |
---|
1560 | if (ifv != NULL) { |
---|
1561 | /* Set the vlan id */ |
---|
1562 | current_tx_desc->upper.fields.special = htole16(ifv->ifv_tag); |
---|
1563 | #else |
---|
1564 | if (mtag != NULL) { |
---|
1565 | /* Set the vlan id */ |
---|
1566 | current_tx_desc->upper.fields.special = htole16(VLAN_TAG_VALUE(mtag)); |
---|
1567 | #endif |
---|
1568 | |
---|
1569 | /* Tell hardware to add tag */ |
---|
1570 | current_tx_desc->lower.data |= htole32(E1000_TXD_CMD_VLE); |
---|
1571 | } |
---|
1572 | #endif |
---|
1573 | |
---|
1574 | tx_buffer->m_head = m_head; |
---|
1575 | #ifndef __rtems__ |
---|
1576 | tx_buffer->map = map; |
---|
1577 | #endif |
---|
1578 | bus_dmamap_sync(adapter->txtag, map, BUS_DMASYNC_PREWRITE); |
---|
1579 | |
---|
1580 | /* |
---|
1581 | * Last Descriptor of Packet needs End Of Packet (EOP) |
---|
1582 | */ |
---|
1583 | current_tx_desc->lower.data |= htole32(E1000_TXD_CMD_EOP); |
---|
1584 | |
---|
1585 | /* |
---|
1586 | * Advance the Transmit Descriptor Tail (Tdt), this tells the E1000 |
---|
1587 | * that this frame is available to transmit. |
---|
1588 | */ |
---|
1589 | bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, |
---|
1590 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
---|
1591 | if (adapter->hw.mac_type == em_82547 && |
---|
1592 | adapter->link_duplex == HALF_DUPLEX) { |
---|
1593 | em_82547_move_tail_locked(adapter); |
---|
1594 | } else { |
---|
1595 | E1000_WRITE_REG(&adapter->hw, TDT, i); |
---|
1596 | if (adapter->hw.mac_type == em_82547) { |
---|
1597 | em_82547_update_fifo_head(adapter, m_head->m_pkthdr.len); |
---|
1598 | } |
---|
1599 | } |
---|
1600 | |
---|
1601 | return(0); |
---|
1602 | } |
---|
1603 | |
---|
1604 | /********************************************************************* |
---|
1605 | * |
---|
1606 | * 82547 workaround to avoid controller hang in half-duplex environment. |
---|
1607 | * The workaround is to avoid queuing a large packet that would span |
---|
1608 | * the internal Tx FIFO ring boundary. We need to reset the FIFO pointers |
---|
1609 | * in this case. We do that only when FIFO is quiescent. |
---|
1610 | * |
---|
1611 | **********************************************************************/ |
---|
1612 | static void |
---|
1613 | em_82547_move_tail_locked(struct adapter *adapter) |
---|
1614 | { |
---|
1615 | uint16_t hw_tdt; |
---|
1616 | uint16_t sw_tdt; |
---|
1617 | struct em_tx_desc *tx_desc; |
---|
1618 | uint16_t length = 0; |
---|
1619 | boolean_t eop = 0; |
---|
1620 | |
---|
1621 | EM_LOCK_ASSERT(adapter); |
---|
1622 | |
---|
1623 | hw_tdt = E1000_READ_REG(&adapter->hw, TDT); |
---|
1624 | sw_tdt = adapter->next_avail_tx_desc; |
---|
1625 | |
---|
1626 | while (hw_tdt != sw_tdt) { |
---|
1627 | tx_desc = &adapter->tx_desc_base[hw_tdt]; |
---|
1628 | length += tx_desc->lower.flags.length; |
---|
1629 | eop = tx_desc->lower.data & E1000_TXD_CMD_EOP; |
---|
1630 | if(++hw_tdt == adapter->num_tx_desc) |
---|
1631 | hw_tdt = 0; |
---|
1632 | |
---|
1633 | if(eop) { |
---|
1634 | if (em_82547_fifo_workaround(adapter, length)) { |
---|
1635 | adapter->tx_fifo_wrk_cnt++; |
---|
1636 | callout_reset(&adapter->tx_fifo_timer, 1, |
---|
1637 | em_82547_move_tail, adapter); |
---|
1638 | break; |
---|
1639 | } |
---|
1640 | E1000_WRITE_REG(&adapter->hw, TDT, hw_tdt); |
---|
1641 | em_82547_update_fifo_head(adapter, length); |
---|
1642 | length = 0; |
---|
1643 | } |
---|
1644 | } |
---|
1645 | return; |
---|
1646 | } |
---|
1647 | |
---|
1648 | #ifndef __rtems__ |
---|
1649 | static void |
---|
1650 | em_82547_move_tail(void *arg) |
---|
1651 | { |
---|
1652 | struct adapter *adapter = arg; |
---|
1653 | |
---|
1654 | EM_LOCK(adapter); |
---|
1655 | em_82547_move_tail_locked(adapter); |
---|
1656 | EM_UNLOCK(adapter); |
---|
1657 | } |
---|
1658 | #endif |
---|
1659 | |
---|
1660 | static int |
---|
1661 | em_82547_fifo_workaround(struct adapter *adapter, int len) |
---|
1662 | { |
---|
1663 | int fifo_space, fifo_pkt_len; |
---|
1664 | |
---|
1665 | fifo_pkt_len = EM_ROUNDUP(len + EM_FIFO_HDR, EM_FIFO_HDR); |
---|
1666 | |
---|
1667 | if (adapter->link_duplex == HALF_DUPLEX) { |
---|
1668 | fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
---|
1669 | |
---|
1670 | if (fifo_pkt_len >= (EM_82547_PKT_THRESH + fifo_space)) { |
---|
1671 | if (em_82547_tx_fifo_reset(adapter)) { |
---|
1672 | return(0); |
---|
1673 | } |
---|
1674 | else { |
---|
1675 | return(1); |
---|
1676 | } |
---|
1677 | } |
---|
1678 | } |
---|
1679 | |
---|
1680 | return(0); |
---|
1681 | } |
---|
1682 | |
---|
1683 | static void |
---|
1684 | em_82547_update_fifo_head(struct adapter *adapter, int len) |
---|
1685 | { |
---|
1686 | int fifo_pkt_len = EM_ROUNDUP(len + EM_FIFO_HDR, EM_FIFO_HDR); |
---|
1687 | |
---|
1688 | /* tx_fifo_head is always 16 byte aligned */ |
---|
1689 | adapter->tx_fifo_head += fifo_pkt_len; |
---|
1690 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) { |
---|
1691 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
---|
1692 | } |
---|
1693 | |
---|
1694 | return; |
---|
1695 | } |
---|
1696 | |
---|
1697 | |
---|
1698 | static int |
---|
1699 | em_82547_tx_fifo_reset(struct adapter *adapter) |
---|
1700 | { |
---|
1701 | uint32_t tctl; |
---|
1702 | |
---|
1703 | if ( (E1000_READ_REG(&adapter->hw, TDT) == |
---|
1704 | E1000_READ_REG(&adapter->hw, TDH)) && |
---|
1705 | (E1000_READ_REG(&adapter->hw, TDFT) == |
---|
1706 | E1000_READ_REG(&adapter->hw, TDFH)) && |
---|
1707 | (E1000_READ_REG(&adapter->hw, TDFTS) == |
---|
1708 | E1000_READ_REG(&adapter->hw, TDFHS)) && |
---|
1709 | (E1000_READ_REG(&adapter->hw, TDFPC) == 0)) { |
---|
1710 | |
---|
1711 | /* Disable TX unit */ |
---|
1712 | tctl = E1000_READ_REG(&adapter->hw, TCTL); |
---|
1713 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl & ~E1000_TCTL_EN); |
---|
1714 | |
---|
1715 | /* Reset FIFO pointers */ |
---|
1716 | E1000_WRITE_REG(&adapter->hw, TDFT, adapter->tx_head_addr); |
---|
1717 | E1000_WRITE_REG(&adapter->hw, TDFH, adapter->tx_head_addr); |
---|
1718 | E1000_WRITE_REG(&adapter->hw, TDFTS, adapter->tx_head_addr); |
---|
1719 | E1000_WRITE_REG(&adapter->hw, TDFHS, adapter->tx_head_addr); |
---|
1720 | |
---|
1721 | /* Re-enable TX unit */ |
---|
1722 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); |
---|
1723 | E1000_WRITE_FLUSH(&adapter->hw); |
---|
1724 | |
---|
1725 | adapter->tx_fifo_head = 0; |
---|
1726 | adapter->tx_fifo_reset_cnt++; |
---|
1727 | |
---|
1728 | return(TRUE); |
---|
1729 | } |
---|
1730 | else { |
---|
1731 | return(FALSE); |
---|
1732 | } |
---|
1733 | } |
---|
1734 | |
---|
1735 | static void |
---|
1736 | em_set_promisc(struct adapter * adapter) |
---|
1737 | { |
---|
1738 | |
---|
1739 | u_int32_t reg_rctl; |
---|
1740 | struct ifnet *ifp = &adapter->arpcom.ac_if; |
---|
1741 | |
---|
1742 | reg_rctl = E1000_READ_REG(&adapter->hw, RCTL); |
---|
1743 | |
---|
1744 | if (ifp->if_flags & IFF_PROMISC) { |
---|
1745 | reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
---|
1746 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
1747 | #ifndef __rtems__ |
---|
1748 | /* Disable VLAN stripping in promiscous mode |
---|
1749 | * This enables bridging of vlan tagged frames to occur |
---|
1750 | * and also allows vlan tags to be seen in tcpdump |
---|
1751 | */ |
---|
1752 | if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) |
---|
1753 | em_disable_vlans(adapter); |
---|
1754 | adapter->em_insert_vlan_header = 1; |
---|
1755 | #endif |
---|
1756 | } else if (ifp->if_flags & IFF_ALLMULTI) { |
---|
1757 | reg_rctl |= E1000_RCTL_MPE; |
---|
1758 | reg_rctl &= ~E1000_RCTL_UPE; |
---|
1759 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
1760 | #ifndef __rtems__ |
---|
1761 | adapter->em_insert_vlan_header = 0; |
---|
1762 | } else |
---|
1763 | adapter->em_insert_vlan_header = 0; |
---|
1764 | #else |
---|
1765 | } |
---|
1766 | #endif |
---|
1767 | |
---|
1768 | return; |
---|
1769 | } |
---|
1770 | |
---|
1771 | static void |
---|
1772 | em_disable_promisc(struct adapter * adapter) |
---|
1773 | { |
---|
1774 | u_int32_t reg_rctl; |
---|
1775 | #ifndef __rtems__ |
---|
1776 | struct ifnet *ifp = adapter->ifp; |
---|
1777 | #endif |
---|
1778 | |
---|
1779 | reg_rctl = E1000_READ_REG(&adapter->hw, RCTL); |
---|
1780 | |
---|
1781 | reg_rctl &= (~E1000_RCTL_UPE); |
---|
1782 | reg_rctl &= (~E1000_RCTL_MPE); |
---|
1783 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
1784 | |
---|
1785 | #ifndef __rtems__ |
---|
1786 | if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) |
---|
1787 | em_enable_vlans(adapter); |
---|
1788 | adapter->em_insert_vlan_header = 0; |
---|
1789 | #endif |
---|
1790 | |
---|
1791 | return; |
---|
1792 | } |
---|
1793 | |
---|
1794 | |
---|
1795 | /********************************************************************* |
---|
1796 | * Multicast Update |
---|
1797 | * |
---|
1798 | * This routine is called whenever multicast address list is updated. |
---|
1799 | * |
---|
1800 | **********************************************************************/ |
---|
1801 | |
---|
1802 | static void |
---|
1803 | em_set_multi(struct adapter * adapter) |
---|
1804 | { |
---|
1805 | u_int32_t reg_rctl = 0; |
---|
1806 | u_int8_t mta[MAX_NUM_MULTICAST_ADDRESSES * ETH_LENGTH_OF_ADDRESS]; |
---|
1807 | #ifndef __rtems__ |
---|
1808 | struct ifmultiaddr *ifma; |
---|
1809 | #endif |
---|
1810 | int mcnt = 0; |
---|
1811 | struct ifnet *ifp = &adapter->arpcom.ac_if; |
---|
1812 | |
---|
1813 | IOCTL_DEBUGOUT("em_set_multi: begin"); |
---|
1814 | |
---|
1815 | if (adapter->hw.mac_type == em_82542_rev2_0) { |
---|
1816 | reg_rctl = E1000_READ_REG(&adapter->hw, RCTL); |
---|
1817 | if (adapter->hw.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) { |
---|
1818 | em_pci_clear_mwi(&adapter->hw); |
---|
1819 | } |
---|
1820 | reg_rctl |= E1000_RCTL_RST; |
---|
1821 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
1822 | msec_delay(5); |
---|
1823 | } |
---|
1824 | |
---|
1825 | #ifndef __rtems__ |
---|
1826 | IF_ADDR_LOCK(ifp); |
---|
1827 | #if __FreeBSD_version < 500000 |
---|
1828 | LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { |
---|
1829 | #else |
---|
1830 | TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { |
---|
1831 | #endif |
---|
1832 | if (ifma->ifma_addr->sa_family != AF_LINK) |
---|
1833 | continue; |
---|
1834 | |
---|
1835 | if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) break; |
---|
1836 | |
---|
1837 | bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), |
---|
1838 | &mta[mcnt*ETH_LENGTH_OF_ADDRESS], ETH_LENGTH_OF_ADDRESS); |
---|
1839 | mcnt++; |
---|
1840 | } |
---|
1841 | IF_ADDR_UNLOCK(ifp); |
---|
1842 | #else |
---|
1843 | { |
---|
1844 | /* Don't know how to handle address ranges - we warn and ignore |
---|
1845 | * for now... |
---|
1846 | */ |
---|
1847 | struct ether_multi *enm; |
---|
1848 | struct ether_multistep step; |
---|
1849 | |
---|
1850 | ETHER_FIRST_MULTI(step, (struct arpcom*)ifp, enm); |
---|
1851 | while ( enm != NULL ) { |
---|
1852 | if ( mcnt == MAX_NUM_MULTICAST_ADDRESSES ) |
---|
1853 | break; |
---|
1854 | if ( memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN) ) { |
---|
1855 | printk("if_em: Unable to handle multicast wildcard (not ported yet); skipping/ignoring\n"); |
---|
1856 | goto skiptonext; |
---|
1857 | } else { |
---|
1858 | bcopy(enm->enm_addrlo, &mta[mcnt * ETHER_ADDR_LEN], ETHER_ADDR_LEN); |
---|
1859 | } |
---|
1860 | mcnt++; |
---|
1861 | skiptonext: |
---|
1862 | ETHER_NEXT_MULTI( step, enm ); |
---|
1863 | } |
---|
1864 | } |
---|
1865 | #endif |
---|
1866 | |
---|
1867 | if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) { |
---|
1868 | reg_rctl = E1000_READ_REG(&adapter->hw, RCTL); |
---|
1869 | reg_rctl |= E1000_RCTL_MPE; |
---|
1870 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
1871 | } else |
---|
1872 | em_mc_addr_list_update(&adapter->hw, mta, mcnt, 0, 1); |
---|
1873 | |
---|
1874 | if (adapter->hw.mac_type == em_82542_rev2_0) { |
---|
1875 | reg_rctl = E1000_READ_REG(&adapter->hw, RCTL); |
---|
1876 | reg_rctl &= ~E1000_RCTL_RST; |
---|
1877 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
1878 | msec_delay(5); |
---|
1879 | if (adapter->hw.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) { |
---|
1880 | em_pci_set_mwi(&adapter->hw); |
---|
1881 | } |
---|
1882 | } |
---|
1883 | |
---|
1884 | return; |
---|
1885 | } |
---|
1886 | |
---|
1887 | #ifndef __rtems__ |
---|
1888 | /********************************************************************* |
---|
1889 | * Timer routine |
---|
1890 | * |
---|
1891 | * This routine checks for link status and updates statistics. |
---|
1892 | * |
---|
1893 | **********************************************************************/ |
---|
1894 | |
---|
1895 | static void |
---|
1896 | em_local_timer(void *arg) |
---|
1897 | { |
---|
1898 | struct ifnet *ifp; |
---|
1899 | struct adapter * adapter = arg; |
---|
1900 | ifp = &adapter->arpcom.ac_if; |
---|
1901 | |
---|
1902 | EM_LOCK(adapter); |
---|
1903 | |
---|
1904 | em_check_for_link(&adapter->hw); |
---|
1905 | em_print_link_status(adapter); |
---|
1906 | em_update_stats_counters(adapter); |
---|
1907 | if (em_display_debug_stats && ifp->if_flags & IFF_RUNNING) { |
---|
1908 | em_print_hw_stats(adapter); |
---|
1909 | } |
---|
1910 | em_smartspeed(adapter); |
---|
1911 | |
---|
1912 | callout_reset(&adapter->timer, hz, em_local_timer, adapter); |
---|
1913 | |
---|
1914 | EM_UNLOCK(adapter); |
---|
1915 | return; |
---|
1916 | } |
---|
1917 | #endif |
---|
1918 | |
---|
1919 | static void |
---|
1920 | em_print_link_status(struct adapter * adapter) |
---|
1921 | { |
---|
1922 | #ifndef __rtems__ |
---|
1923 | struct ifnet *ifp = &adapter->arpcom.ac_if; |
---|
1924 | #endif |
---|
1925 | |
---|
1926 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU) { |
---|
1927 | if (adapter->link_active == 0) { |
---|
1928 | em_get_speed_and_duplex(&adapter->hw, |
---|
1929 | &adapter->link_speed, |
---|
1930 | &adapter->link_duplex); |
---|
1931 | if (bootverbose) |
---|
1932 | printf("em%d: Link is up %d Mbps %s\n", |
---|
1933 | adapter->unit, |
---|
1934 | adapter->link_speed, |
---|
1935 | ((adapter->link_duplex == FULL_DUPLEX) ? |
---|
1936 | "Full Duplex" : "Half Duplex")); |
---|
1937 | adapter->link_active = 1; |
---|
1938 | adapter->smartspeed = 0; |
---|
1939 | #ifndef __rtems__ |
---|
1940 | if_link_state_change(ifp, LINK_STATE_UP); |
---|
1941 | #endif |
---|
1942 | } |
---|
1943 | } else { |
---|
1944 | if (adapter->link_active == 1) { |
---|
1945 | adapter->link_speed = 0; |
---|
1946 | adapter->link_duplex = 0; |
---|
1947 | if (bootverbose) |
---|
1948 | printf("em%d: Link is Down\n", adapter->unit); |
---|
1949 | adapter->link_active = 0; |
---|
1950 | #ifndef __rtems__ |
---|
1951 | if_link_state_change(ifp, LINK_STATE_UP); |
---|
1952 | if_link_state_change(ifp, LINK_STATE_DOWN); |
---|
1953 | #endif |
---|
1954 | } |
---|
1955 | } |
---|
1956 | |
---|
1957 | return; |
---|
1958 | } |
---|
1959 | |
---|
1960 | /********************************************************************* |
---|
1961 | * |
---|
1962 | * This routine disables all traffic on the adapter by issuing a |
---|
1963 | * global reset on the MAC and deallocates TX/RX buffers. |
---|
1964 | * |
---|
1965 | **********************************************************************/ |
---|
1966 | |
---|
1967 | static void |
---|
1968 | em_stop(void *arg) |
---|
1969 | { |
---|
1970 | struct ifnet *ifp; |
---|
1971 | struct adapter * adapter = arg; |
---|
1972 | ifp = &adapter->arpcom.ac_if; |
---|
1973 | |
---|
1974 | mtx_assert(&adapter->mtx, MA_OWNED); |
---|
1975 | |
---|
1976 | INIT_DEBUGOUT("em_stop: begin"); |
---|
1977 | #ifdef DEVICE_POLLING |
---|
1978 | ether_poll_deregister(ifp); |
---|
1979 | #endif |
---|
1980 | em_disable_intr(adapter); |
---|
1981 | em_reset_hw(&adapter->hw); |
---|
1982 | callout_stop(&adapter->timer); |
---|
1983 | callout_stop(&adapter->tx_fifo_timer); |
---|
1984 | em_free_transmit_structures(adapter); |
---|
1985 | em_free_receive_structures(adapter); |
---|
1986 | |
---|
1987 | |
---|
1988 | /* Tell the stack that the interface is no longer active */ |
---|
1989 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
---|
1990 | |
---|
1991 | return; |
---|
1992 | } |
---|
1993 | |
---|
1994 | |
---|
1995 | /********************************************************************* |
---|
1996 | * |
---|
1997 | * Determine hardware revision. |
---|
1998 | * |
---|
1999 | **********************************************************************/ |
---|
2000 | static void |
---|
2001 | em_identify_hardware(struct adapter * adapter) |
---|
2002 | { |
---|
2003 | device_t dev = adapter->dev; |
---|
2004 | |
---|
2005 | /* Make sure our PCI config space has the necessary stuff set */ |
---|
2006 | adapter->hw.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2); |
---|
2007 | if (!((adapter->hw.pci_cmd_word & PCIM_CMD_BUSMASTEREN) && |
---|
2008 | (adapter->hw.pci_cmd_word & PCIM_CMD_MEMEN))) { |
---|
2009 | printf("em%d: Memory Access and/or Bus Master bits were not set!\n", |
---|
2010 | adapter->unit); |
---|
2011 | adapter->hw.pci_cmd_word |= |
---|
2012 | (PCIM_CMD_BUSMASTEREN | PCIM_CMD_MEMEN); |
---|
2013 | pci_write_config(dev, PCIR_COMMAND, adapter->hw.pci_cmd_word, 2); |
---|
2014 | } |
---|
2015 | |
---|
2016 | /* Save off the information about this board */ |
---|
2017 | adapter->hw.vendor_id = pci_get_vendor(dev); |
---|
2018 | adapter->hw.device_id = pci_get_device(dev); |
---|
2019 | adapter->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1); |
---|
2020 | adapter->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2); |
---|
2021 | adapter->hw.subsystem_id = pci_read_config(dev, PCIR_SUBDEV_0, 2); |
---|
2022 | |
---|
2023 | /* Identify the MAC */ |
---|
2024 | if (em_set_mac_type(&adapter->hw)) |
---|
2025 | printf("em%d: Unknown MAC Type\n", adapter->unit); |
---|
2026 | |
---|
2027 | if(adapter->hw.mac_type == em_82541 || |
---|
2028 | adapter->hw.mac_type == em_82541_rev_2 || |
---|
2029 | adapter->hw.mac_type == em_82547 || |
---|
2030 | adapter->hw.mac_type == em_82547_rev_2) |
---|
2031 | adapter->hw.phy_init_script = TRUE; |
---|
2032 | |
---|
2033 | return; |
---|
2034 | } |
---|
2035 | |
---|
2036 | static int |
---|
2037 | em_allocate_pci_resources(struct adapter * adapter) |
---|
2038 | { |
---|
2039 | int i, val, rid; |
---|
2040 | device_t dev = adapter->dev; |
---|
2041 | |
---|
2042 | rid = EM_MMBA; |
---|
2043 | |
---|
2044 | #ifndef __rtems__ |
---|
2045 | adapter->res_memory = bus_alloc_resource_any(dev, SYS_RES_MEMORY, |
---|
2046 | &rid, RF_ACTIVE); |
---|
2047 | if (!(adapter->res_memory)) { |
---|
2048 | printf("em%d: Unable to allocate bus resource: memory\n", |
---|
2049 | adapter->unit); |
---|
2050 | return(ENXIO); |
---|
2051 | } |
---|
2052 | adapter->osdep.mem_bus_space_tag = |
---|
2053 | rman_get_bustag(adapter->res_memory); |
---|
2054 | adapter->osdep.mem_bus_space_handle = |
---|
2055 | rman_get_bushandle(adapter->res_memory); |
---|
2056 | #endif |
---|
2057 | |
---|
2058 | adapter->hw.hw_addr = (uint8_t *)&adapter->osdep.mem_bus_space_handle; |
---|
2059 | |
---|
2060 | |
---|
2061 | if (adapter->hw.mac_type > em_82543) { |
---|
2062 | /* Figure our where our IO BAR is ? */ |
---|
2063 | rid = EM_MMBA; |
---|
2064 | for (i = 0; i < 5; i++) { |
---|
2065 | val = pci_read_config(dev, rid, 4); |
---|
2066 | if (val & 0x00000001) { |
---|
2067 | #ifndef __rtems__ |
---|
2068 | adapter->io_rid = rid; |
---|
2069 | #endif |
---|
2070 | break; |
---|
2071 | } |
---|
2072 | rid += 4; |
---|
2073 | } |
---|
2074 | |
---|
2075 | #ifndef __rtems__ |
---|
2076 | adapter->res_ioport = bus_alloc_resource_any(dev, |
---|
2077 | SYS_RES_IOPORT, |
---|
2078 | &adapter->io_rid, |
---|
2079 | RF_ACTIVE); |
---|
2080 | if (!(adapter->res_ioport)) { |
---|
2081 | printf("em%d: Unable to allocate bus resource: ioport\n", |
---|
2082 | adapter->unit); |
---|
2083 | return(ENXIO); |
---|
2084 | } |
---|
2085 | |
---|
2086 | adapter->hw.io_base = |
---|
2087 | rman_get_start(adapter->res_ioport); |
---|
2088 | #else |
---|
2089 | adapter->hw.io_base = val & PCI_BASE_ADDRESS_IO_MASK; |
---|
2090 | #endif |
---|
2091 | } |
---|
2092 | |
---|
2093 | #ifndef __rtems__ |
---|
2094 | rid = 0x0; |
---|
2095 | adapter->res_interrupt = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, |
---|
2096 | RF_SHAREABLE | |
---|
2097 | RF_ACTIVE); |
---|
2098 | if (!(adapter->res_interrupt)) { |
---|
2099 | printf("em%d: Unable to allocate bus resource: interrupt\n", |
---|
2100 | adapter->unit); |
---|
2101 | return(ENXIO); |
---|
2102 | } |
---|
2103 | if (bus_setup_intr(dev, adapter->res_interrupt, |
---|
2104 | INTR_TYPE_NET | INTR_MPSAFE, |
---|
2105 | (void (*)(void *)) em_intr, adapter, |
---|
2106 | &adapter->int_handler_tag)) { |
---|
2107 | printf("em%d: Error registering interrupt handler!\n", |
---|
2108 | adapter->unit); |
---|
2109 | return(ENXIO); |
---|
2110 | } |
---|
2111 | #endif |
---|
2112 | |
---|
2113 | adapter->hw.back = &adapter->osdep; |
---|
2114 | |
---|
2115 | return(0); |
---|
2116 | } |
---|
2117 | |
---|
2118 | #ifndef __rtems__ |
---|
2119 | static void |
---|
2120 | em_free_pci_resources(struct adapter * adapter) |
---|
2121 | { |
---|
2122 | device_t dev = adapter->dev; |
---|
2123 | |
---|
2124 | if (adapter->res_interrupt != NULL) { |
---|
2125 | bus_teardown_intr(dev, adapter->res_interrupt, |
---|
2126 | adapter->int_handler_tag); |
---|
2127 | bus_release_resource(dev, SYS_RES_IRQ, 0, |
---|
2128 | adapter->res_interrupt); |
---|
2129 | } |
---|
2130 | if (adapter->res_memory != NULL) { |
---|
2131 | bus_release_resource(dev, SYS_RES_MEMORY, EM_MMBA, |
---|
2132 | adapter->res_memory); |
---|
2133 | } |
---|
2134 | |
---|
2135 | if (adapter->res_ioport != NULL) { |
---|
2136 | bus_release_resource(dev, SYS_RES_IOPORT, adapter->io_rid, |
---|
2137 | adapter->res_ioport); |
---|
2138 | } |
---|
2139 | return; |
---|
2140 | } |
---|
2141 | #endif |
---|
2142 | |
---|
2143 | /********************************************************************* |
---|
2144 | * |
---|
2145 | * Initialize the hardware to a configuration as specified by the |
---|
2146 | * adapter structure. The controller is reset, the EEPROM is |
---|
2147 | * verified, the MAC address is set, then the shared initialization |
---|
2148 | * routines are called. |
---|
2149 | * |
---|
2150 | **********************************************************************/ |
---|
2151 | static int |
---|
2152 | em_hardware_init(struct adapter * adapter) |
---|
2153 | { |
---|
2154 | INIT_DEBUGOUT("em_hardware_init: begin"); |
---|
2155 | /* Issue a global reset */ |
---|
2156 | em_reset_hw(&adapter->hw); |
---|
2157 | |
---|
2158 | /* When hardware is reset, fifo_head is also reset */ |
---|
2159 | adapter->tx_fifo_head = 0; |
---|
2160 | |
---|
2161 | /* Make sure we have a good EEPROM before we read from it */ |
---|
2162 | if (em_validate_eeprom_checksum(&adapter->hw) < 0) { |
---|
2163 | printf("em%d: The EEPROM Checksum Is Not Valid\n", |
---|
2164 | adapter->unit); |
---|
2165 | return(EIO); |
---|
2166 | } |
---|
2167 | |
---|
2168 | if (em_read_part_num(&adapter->hw, &(adapter->part_num)) < 0) { |
---|
2169 | printf("em%d: EEPROM read error while reading part number\n", |
---|
2170 | adapter->unit); |
---|
2171 | return(EIO); |
---|
2172 | } |
---|
2173 | |
---|
2174 | if (em_init_hw(&adapter->hw) < 0) { |
---|
2175 | printf("em%d: Hardware Initialization Failed", |
---|
2176 | adapter->unit); |
---|
2177 | return(EIO); |
---|
2178 | } |
---|
2179 | |
---|
2180 | em_check_for_link(&adapter->hw); |
---|
2181 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU) |
---|
2182 | adapter->link_active = 1; |
---|
2183 | else |
---|
2184 | adapter->link_active = 0; |
---|
2185 | |
---|
2186 | if (adapter->link_active) { |
---|
2187 | em_get_speed_and_duplex(&adapter->hw, |
---|
2188 | &adapter->link_speed, |
---|
2189 | &adapter->link_duplex); |
---|
2190 | } else { |
---|
2191 | adapter->link_speed = 0; |
---|
2192 | adapter->link_duplex = 0; |
---|
2193 | } |
---|
2194 | |
---|
2195 | return(0); |
---|
2196 | } |
---|
2197 | |
---|
2198 | /********************************************************************* |
---|
2199 | * |
---|
2200 | * Setup networking device structure and register an interface. |
---|
2201 | * |
---|
2202 | **********************************************************************/ |
---|
2203 | static void |
---|
2204 | em_setup_interface(device_t dev, struct adapter * adapter) |
---|
2205 | { |
---|
2206 | struct ifnet *ifp = &device_get_softc(dev)->arpcom.ac_if; |
---|
2207 | INIT_DEBUGOUT("em_setup_interface: begin"); |
---|
2208 | |
---|
2209 | if_initname(ifp, device_get_name(dev), device_get_unit(dev)); |
---|
2210 | ifp->if_mtu = ETHERMTU; |
---|
2211 | ifp->if_baudrate = 1000000000; |
---|
2212 | ifp->if_init = em_init; |
---|
2213 | ifp->if_softc = adapter; |
---|
2214 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
---|
2215 | #ifdef __rtems__ |
---|
2216 | ifp->if_output = ether_output; |
---|
2217 | #endif |
---|
2218 | ifp->if_ioctl = em_ioctl; |
---|
2219 | ifp->if_start = em_start; |
---|
2220 | ifp->if_watchdog = em_watchdog; |
---|
2221 | #ifndef __rtems__ |
---|
2222 | IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 1); |
---|
2223 | ifp->if_snd.ifq_drv_maxlen = adapter->num_tx_desc - 1; |
---|
2224 | IFQ_SET_READY(&ifp->if_snd); |
---|
2225 | #else |
---|
2226 | ifp->if_snd.ifq_maxlen = adapter->num_tx_desc - 1; |
---|
2227 | #endif |
---|
2228 | |
---|
2229 | #ifndef __rtems__ |
---|
2230 | #if __FreeBSD_version < 500000 |
---|
2231 | ether_ifattach(ifp, ETHER_BPF_SUPPORTED); |
---|
2232 | #else |
---|
2233 | ether_ifattach(ifp, adapter->hw.mac_addr); |
---|
2234 | #endif |
---|
2235 | #else |
---|
2236 | if ( !ifp->if_addrlist ) /* reattach hack */ |
---|
2237 | { |
---|
2238 | if_attach(ifp); |
---|
2239 | ether_ifattach(ifp); |
---|
2240 | } |
---|
2241 | #endif |
---|
2242 | |
---|
2243 | #ifndef __rtems__ |
---|
2244 | ifp->if_capabilities = ifp->if_capenable = 0; |
---|
2245 | |
---|
2246 | if (adapter->hw.mac_type >= em_82543) { |
---|
2247 | ifp->if_capabilities |= IFCAP_HWCSUM; |
---|
2248 | ifp->if_capenable |= IFCAP_HWCSUM; |
---|
2249 | } |
---|
2250 | |
---|
2251 | /* |
---|
2252 | * Tell the upper layer(s) we support long frames. |
---|
2253 | */ |
---|
2254 | ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); |
---|
2255 | #if __FreeBSD_version >= 500000 |
---|
2256 | ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU; |
---|
2257 | ifp->if_capenable |= IFCAP_VLAN_MTU; |
---|
2258 | #endif |
---|
2259 | |
---|
2260 | #ifdef DEVICE_POLLING |
---|
2261 | ifp->if_capabilities |= IFCAP_POLLING; |
---|
2262 | ifp->if_capenable |= IFCAP_POLLING; |
---|
2263 | #endif |
---|
2264 | |
---|
2265 | /* |
---|
2266 | * Specify the media types supported by this adapter and register |
---|
2267 | * callbacks to update media and link information |
---|
2268 | */ |
---|
2269 | ifmedia_init(&adapter->media, IFM_IMASK, em_media_change, |
---|
2270 | em_media_status); |
---|
2271 | if (adapter->hw.media_type == em_media_type_fiber) { |
---|
2272 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_SX | IFM_FDX, |
---|
2273 | 0, NULL); |
---|
2274 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_SX, |
---|
2275 | 0, NULL); |
---|
2276 | } else { |
---|
2277 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T, 0, NULL); |
---|
2278 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T | IFM_FDX, |
---|
2279 | 0, NULL); |
---|
2280 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX, |
---|
2281 | 0, NULL); |
---|
2282 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX | IFM_FDX, |
---|
2283 | 0, NULL); |
---|
2284 | #if __FreeBSD_version < 500000 |
---|
2285 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_TX | IFM_FDX, |
---|
2286 | 0, NULL); |
---|
2287 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_TX, 0, NULL); |
---|
2288 | #else |
---|
2289 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_T | IFM_FDX, |
---|
2290 | 0, NULL); |
---|
2291 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_T, 0, NULL); |
---|
2292 | #endif |
---|
2293 | } |
---|
2294 | ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); |
---|
2295 | ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); |
---|
2296 | #endif |
---|
2297 | |
---|
2298 | return; |
---|
2299 | } |
---|
2300 | |
---|
2301 | #ifndef __rtems__ |
---|
2302 | /********************************************************************* |
---|
2303 | * |
---|
2304 | * Workaround for SmartSpeed on 82541 and 82547 controllers |
---|
2305 | * |
---|
2306 | **********************************************************************/ |
---|
2307 | static void |
---|
2308 | em_smartspeed(struct adapter *adapter) |
---|
2309 | { |
---|
2310 | uint16_t phy_tmp; |
---|
2311 | |
---|
2312 | if(adapter->link_active || (adapter->hw.phy_type != em_phy_igp) || |
---|
2313 | !adapter->hw.autoneg || !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
---|
2314 | return; |
---|
2315 | |
---|
2316 | if(adapter->smartspeed == 0) { |
---|
2317 | /* If Master/Slave config fault is asserted twice, |
---|
2318 | * we assume back-to-back */ |
---|
2319 | em_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_tmp); |
---|
2320 | if(!(phy_tmp & SR_1000T_MS_CONFIG_FAULT)) return; |
---|
2321 | em_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_tmp); |
---|
2322 | if(phy_tmp & SR_1000T_MS_CONFIG_FAULT) { |
---|
2323 | em_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, |
---|
2324 | &phy_tmp); |
---|
2325 | if(phy_tmp & CR_1000T_MS_ENABLE) { |
---|
2326 | phy_tmp &= ~CR_1000T_MS_ENABLE; |
---|
2327 | em_write_phy_reg(&adapter->hw, |
---|
2328 | PHY_1000T_CTRL, phy_tmp); |
---|
2329 | adapter->smartspeed++; |
---|
2330 | if(adapter->hw.autoneg && |
---|
2331 | !em_phy_setup_autoneg(&adapter->hw) && |
---|
2332 | !em_read_phy_reg(&adapter->hw, PHY_CTRL, |
---|
2333 | &phy_tmp)) { |
---|
2334 | phy_tmp |= (MII_CR_AUTO_NEG_EN | |
---|
2335 | MII_CR_RESTART_AUTO_NEG); |
---|
2336 | em_write_phy_reg(&adapter->hw, |
---|
2337 | PHY_CTRL, phy_tmp); |
---|
2338 | } |
---|
2339 | } |
---|
2340 | } |
---|
2341 | return; |
---|
2342 | } else if(adapter->smartspeed == EM_SMARTSPEED_DOWNSHIFT) { |
---|
2343 | /* If still no link, perhaps using 2/3 pair cable */ |
---|
2344 | em_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_tmp); |
---|
2345 | phy_tmp |= CR_1000T_MS_ENABLE; |
---|
2346 | em_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_tmp); |
---|
2347 | if(adapter->hw.autoneg && |
---|
2348 | !em_phy_setup_autoneg(&adapter->hw) && |
---|
2349 | !em_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_tmp)) { |
---|
2350 | phy_tmp |= (MII_CR_AUTO_NEG_EN | |
---|
2351 | MII_CR_RESTART_AUTO_NEG); |
---|
2352 | em_write_phy_reg(&adapter->hw, PHY_CTRL, phy_tmp); |
---|
2353 | } |
---|
2354 | } |
---|
2355 | /* Restart process after EM_SMARTSPEED_MAX iterations */ |
---|
2356 | if(adapter->smartspeed++ == EM_SMARTSPEED_MAX) |
---|
2357 | adapter->smartspeed = 0; |
---|
2358 | |
---|
2359 | return; |
---|
2360 | } |
---|
2361 | |
---|
2362 | |
---|
2363 | /* |
---|
2364 | * Manage DMA'able memory. |
---|
2365 | */ |
---|
2366 | static void |
---|
2367 | em_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) |
---|
2368 | { |
---|
2369 | if (error) |
---|
2370 | return; |
---|
2371 | *(bus_addr_t*) arg = segs->ds_addr; |
---|
2372 | return; |
---|
2373 | } |
---|
2374 | #endif |
---|
2375 | |
---|
2376 | static int |
---|
2377 | em_dma_malloc(struct adapter *adapter, bus_size_t size, |
---|
2378 | struct em_dma_alloc *dma, int mapflags) |
---|
2379 | { |
---|
2380 | int r; |
---|
2381 | |
---|
2382 | #ifndef __rtems__ |
---|
2383 | r = bus_dma_tag_create(NULL, /* parent */ |
---|
2384 | PAGE_SIZE, 0, /* alignment, bounds */ |
---|
2385 | BUS_SPACE_MAXADDR, /* lowaddr */ |
---|
2386 | BUS_SPACE_MAXADDR, /* highaddr */ |
---|
2387 | NULL, NULL, /* filter, filterarg */ |
---|
2388 | size, /* maxsize */ |
---|
2389 | 1, /* nsegments */ |
---|
2390 | size, /* maxsegsize */ |
---|
2391 | BUS_DMA_ALLOCNOW, /* flags */ |
---|
2392 | NULL, /* lockfunc */ |
---|
2393 | NULL, /* lockarg */ |
---|
2394 | &dma->dma_tag); |
---|
2395 | if (r != 0) { |
---|
2396 | printf("em%d: em_dma_malloc: bus_dma_tag_create failed; " |
---|
2397 | "error %u\n", adapter->unit, r); |
---|
2398 | goto fail_0; |
---|
2399 | } |
---|
2400 | |
---|
2401 | r = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr, |
---|
2402 | BUS_DMA_NOWAIT, &dma->dma_map); |
---|
2403 | #else |
---|
2404 | if ( (dma->malloc_base = malloc( size + PAGE_SIZE, M_DEVBUF, M_NOWAIT )) ) { |
---|
2405 | r = 0; |
---|
2406 | dma->dma_vaddr = (caddr_t)_DO_ALIGN(dma->malloc_base, PAGE_SIZE); |
---|
2407 | } else { |
---|
2408 | r = -1; |
---|
2409 | } |
---|
2410 | #endif |
---|
2411 | if (r != 0) { |
---|
2412 | #ifndef __rtems__ |
---|
2413 | printf("em%d: em_dma_malloc: bus_dmammem_alloc failed; " |
---|
2414 | "size %ju, error %d\n", adapter->unit, |
---|
2415 | (uintmax_t)size, r); |
---|
2416 | #else |
---|
2417 | printf("em%d: em_dma_malloc: bus_dmammem_alloc failed; " |
---|
2418 | "size %u, error %d\n", adapter->unit, |
---|
2419 | size, r); |
---|
2420 | #endif |
---|
2421 | goto fail_2; |
---|
2422 | } |
---|
2423 | |
---|
2424 | #ifndef __rtems__ |
---|
2425 | r = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, |
---|
2426 | size, |
---|
2427 | em_dmamap_cb, |
---|
2428 | &dma->dma_paddr, |
---|
2429 | mapflags | BUS_DMA_NOWAIT); |
---|
2430 | #else |
---|
2431 | dma->dma_paddr = kvtop(dma->dma_vaddr); |
---|
2432 | #endif |
---|
2433 | if (r != 0) { |
---|
2434 | printf("em%d: em_dma_malloc: bus_dmamap_load failed; " |
---|
2435 | "error %u\n", adapter->unit, r); |
---|
2436 | goto fail_3; |
---|
2437 | } |
---|
2438 | |
---|
2439 | #ifndef __rtems__ |
---|
2440 | dma->dma_size = size; |
---|
2441 | #endif |
---|
2442 | return (0); |
---|
2443 | |
---|
2444 | fail_3: |
---|
2445 | bus_dmamap_unload(dma->dma_tag, dma->dma_map); |
---|
2446 | fail_2: |
---|
2447 | #ifndef __rtems__ |
---|
2448 | bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); |
---|
2449 | #else |
---|
2450 | free(dma->malloc_base, M_DEVBUF); |
---|
2451 | dma->dma_vaddr = dma->malloc_base = 0; |
---|
2452 | dma->dma_paddr = 0; |
---|
2453 | #endif |
---|
2454 | bus_dma_tag_destroy(dma->dma_tag); |
---|
2455 | #ifndef __rtems__ |
---|
2456 | fail_0: |
---|
2457 | dma->dma_map = NULL; |
---|
2458 | dma->dma_tag = NULL; |
---|
2459 | #endif |
---|
2460 | return (r); |
---|
2461 | } |
---|
2462 | |
---|
2463 | static void |
---|
2464 | em_dma_free(struct adapter *adapter, struct em_dma_alloc *dma) |
---|
2465 | { |
---|
2466 | bus_dmamap_unload(dma->dma_tag, dma->dma_map); |
---|
2467 | #ifndef __rtems__ |
---|
2468 | bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); |
---|
2469 | #else |
---|
2470 | free(dma->malloc_base, M_DEVBUF); |
---|
2471 | dma->dma_vaddr = dma->malloc_base = 0; |
---|
2472 | dma->dma_paddr = 0; |
---|
2473 | #endif |
---|
2474 | bus_dma_tag_destroy(dma->dma_tag); |
---|
2475 | } |
---|
2476 | |
---|
2477 | |
---|
2478 | /********************************************************************* |
---|
2479 | * |
---|
2480 | * Allocate memory for tx_buffer structures. The tx_buffer stores all |
---|
2481 | * the information needed to transmit a packet on the wire. |
---|
2482 | * |
---|
2483 | **********************************************************************/ |
---|
2484 | static int |
---|
2485 | em_allocate_transmit_structures(struct adapter * adapter) |
---|
2486 | { |
---|
2487 | if (!(adapter->tx_buffer_area = |
---|
2488 | (struct em_buffer *) malloc(sizeof(struct em_buffer) * |
---|
2489 | adapter->num_tx_desc, M_DEVBUF, |
---|
2490 | M_NOWAIT))) { |
---|
2491 | printf("em%d: Unable to allocate tx_buffer memory\n", |
---|
2492 | adapter->unit); |
---|
2493 | return ENOMEM; |
---|
2494 | } |
---|
2495 | |
---|
2496 | bzero(adapter->tx_buffer_area, |
---|
2497 | sizeof(struct em_buffer) * adapter->num_tx_desc); |
---|
2498 | |
---|
2499 | return 0; |
---|
2500 | } |
---|
2501 | |
---|
2502 | /********************************************************************* |
---|
2503 | * |
---|
2504 | * Allocate and initialize transmit structures. |
---|
2505 | * |
---|
2506 | **********************************************************************/ |
---|
2507 | static int |
---|
2508 | em_setup_transmit_structures(struct adapter * adapter) |
---|
2509 | { |
---|
2510 | #ifndef __rtems__ |
---|
2511 | /* |
---|
2512 | * Setup DMA descriptor areas. |
---|
2513 | */ |
---|
2514 | if (bus_dma_tag_create(NULL, /* parent */ |
---|
2515 | 1, 0, /* alignment, bounds */ |
---|
2516 | BUS_SPACE_MAXADDR, /* lowaddr */ |
---|
2517 | BUS_SPACE_MAXADDR, /* highaddr */ |
---|
2518 | NULL, NULL, /* filter, filterarg */ |
---|
2519 | MCLBYTES * 8, /* maxsize */ |
---|
2520 | EM_MAX_SCATTER, /* nsegments */ |
---|
2521 | MCLBYTES * 8, /* maxsegsize */ |
---|
2522 | BUS_DMA_ALLOCNOW, /* flags */ |
---|
2523 | NULL, /* lockfunc */ |
---|
2524 | NULL, /* lockarg */ |
---|
2525 | &adapter->txtag)) { |
---|
2526 | printf("em%d: Unable to allocate TX DMA tag\n", adapter->unit); |
---|
2527 | return (ENOMEM); |
---|
2528 | } |
---|
2529 | #endif |
---|
2530 | |
---|
2531 | if (em_allocate_transmit_structures(adapter)) |
---|
2532 | return (ENOMEM); |
---|
2533 | |
---|
2534 | bzero((void *) adapter->tx_desc_base, |
---|
2535 | (sizeof(struct em_tx_desc)) * adapter->num_tx_desc); |
---|
2536 | |
---|
2537 | adapter->next_avail_tx_desc = 0; |
---|
2538 | adapter->oldest_used_tx_desc = 0; |
---|
2539 | |
---|
2540 | /* Set number of descriptors available */ |
---|
2541 | adapter->num_tx_desc_avail = adapter->num_tx_desc; |
---|
2542 | |
---|
2543 | /* Set checksum context */ |
---|
2544 | adapter->active_checksum_context = OFFLOAD_NONE; |
---|
2545 | |
---|
2546 | return (0); |
---|
2547 | } |
---|
2548 | |
---|
2549 | /********************************************************************* |
---|
2550 | * |
---|
2551 | * Enable transmit unit. |
---|
2552 | * |
---|
2553 | **********************************************************************/ |
---|
2554 | static void |
---|
2555 | em_initialize_transmit_unit(struct adapter * adapter) |
---|
2556 | { |
---|
2557 | u_int32_t reg_tctl; |
---|
2558 | u_int32_t reg_tipg = 0; |
---|
2559 | u_int64_t bus_addr; |
---|
2560 | |
---|
2561 | INIT_DEBUGOUT("em_initialize_transmit_unit: begin"); |
---|
2562 | /* Setup the Base and Length of the Tx Descriptor Ring */ |
---|
2563 | bus_addr = adapter->txdma.dma_paddr; |
---|
2564 | E1000_WRITE_REG(&adapter->hw, TDBAL, (u_int32_t)bus_addr); |
---|
2565 | E1000_WRITE_REG(&adapter->hw, TDBAH, (u_int32_t)(bus_addr >> 32)); |
---|
2566 | E1000_WRITE_REG(&adapter->hw, TDLEN, |
---|
2567 | adapter->num_tx_desc * |
---|
2568 | sizeof(struct em_tx_desc)); |
---|
2569 | |
---|
2570 | /* Setup the HW Tx Head and Tail descriptor pointers */ |
---|
2571 | E1000_WRITE_REG(&adapter->hw, TDH, 0); |
---|
2572 | E1000_WRITE_REG(&adapter->hw, TDT, 0); |
---|
2573 | |
---|
2574 | |
---|
2575 | HW_DEBUGOUT2("Base = %" PRIx32 ", Length = %" PRIx32 "\n", |
---|
2576 | E1000_READ_REG(&adapter->hw, TDBAL), |
---|
2577 | E1000_READ_REG(&adapter->hw, TDLEN)); |
---|
2578 | |
---|
2579 | /* Set the default values for the Tx Inter Packet Gap timer */ |
---|
2580 | switch (adapter->hw.mac_type) { |
---|
2581 | case em_82542_rev2_0: |
---|
2582 | case em_82542_rev2_1: |
---|
2583 | reg_tipg = DEFAULT_82542_TIPG_IPGT; |
---|
2584 | reg_tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; |
---|
2585 | reg_tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; |
---|
2586 | break; |
---|
2587 | default: |
---|
2588 | if (adapter->hw.media_type == em_media_type_fiber) |
---|
2589 | reg_tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
---|
2590 | else |
---|
2591 | reg_tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
---|
2592 | reg_tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; |
---|
2593 | reg_tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; |
---|
2594 | } |
---|
2595 | |
---|
2596 | E1000_WRITE_REG(&adapter->hw, TIPG, reg_tipg); |
---|
2597 | E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay.value); |
---|
2598 | if(adapter->hw.mac_type >= em_82540) |
---|
2599 | E1000_WRITE_REG(&adapter->hw, TADV, |
---|
2600 | adapter->tx_abs_int_delay.value); |
---|
2601 | |
---|
2602 | /* Program the Transmit Control Register */ |
---|
2603 | reg_tctl = E1000_TCTL_PSP | E1000_TCTL_EN | |
---|
2604 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
---|
2605 | if (adapter->hw.mac_type >= em_82573) |
---|
2606 | reg_tctl |= E1000_TCTL_MULR; |
---|
2607 | if (adapter->link_duplex == 1) { |
---|
2608 | reg_tctl |= E1000_FDX_COLLISION_DISTANCE << E1000_COLD_SHIFT; |
---|
2609 | } else { |
---|
2610 | reg_tctl |= E1000_HDX_COLLISION_DISTANCE << E1000_COLD_SHIFT; |
---|
2611 | } |
---|
2612 | E1000_WRITE_REG(&adapter->hw, TCTL, reg_tctl); |
---|
2613 | |
---|
2614 | /* Setup Transmit Descriptor Settings for this adapter */ |
---|
2615 | adapter->txd_cmd = E1000_TXD_CMD_IFCS | E1000_TXD_CMD_RS; |
---|
2616 | |
---|
2617 | if (adapter->tx_int_delay.value > 0) |
---|
2618 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
---|
2619 | |
---|
2620 | return; |
---|
2621 | } |
---|
2622 | |
---|
2623 | /********************************************************************* |
---|
2624 | * |
---|
2625 | * Free all transmit related data structures. |
---|
2626 | * |
---|
2627 | **********************************************************************/ |
---|
2628 | static void |
---|
2629 | em_free_transmit_structures(struct adapter * adapter) |
---|
2630 | { |
---|
2631 | struct em_buffer *tx_buffer; |
---|
2632 | int i; |
---|
2633 | |
---|
2634 | INIT_DEBUGOUT("free_transmit_structures: begin"); |
---|
2635 | |
---|
2636 | if (adapter->tx_buffer_area != NULL) { |
---|
2637 | tx_buffer = adapter->tx_buffer_area; |
---|
2638 | for (i = 0; i < adapter->num_tx_desc; i++, tx_buffer++) { |
---|
2639 | if (tx_buffer->m_head != NULL) { |
---|
2640 | bus_dmamap_unload(adapter->txtag, tx_buffer->map); |
---|
2641 | bus_dmamap_destroy(adapter->txtag, tx_buffer->map); |
---|
2642 | m_freem(tx_buffer->m_head); |
---|
2643 | } |
---|
2644 | tx_buffer->m_head = NULL; |
---|
2645 | } |
---|
2646 | } |
---|
2647 | if (adapter->tx_buffer_area != NULL) { |
---|
2648 | free(adapter->tx_buffer_area, M_DEVBUF); |
---|
2649 | adapter->tx_buffer_area = NULL; |
---|
2650 | } |
---|
2651 | #ifndef __rtems__ |
---|
2652 | if (adapter->txtag != NULL) { |
---|
2653 | bus_dma_tag_destroy(adapter->txtag); |
---|
2654 | adapter->txtag = NULL; |
---|
2655 | } |
---|
2656 | #endif |
---|
2657 | return; |
---|
2658 | } |
---|
2659 | |
---|
2660 | #ifndef __rtems__ |
---|
2661 | /********************************************************************* |
---|
2662 | * |
---|
2663 | * The offload context needs to be set when we transfer the first |
---|
2664 | * packet of a particular protocol (TCP/UDP). We change the |
---|
2665 | * context only if the protocol type changes. |
---|
2666 | * |
---|
2667 | **********************************************************************/ |
---|
2668 | static void |
---|
2669 | em_transmit_checksum_setup(struct adapter * adapter, |
---|
2670 | struct mbuf *mp, |
---|
2671 | u_int32_t *txd_upper, |
---|
2672 | u_int32_t *txd_lower) |
---|
2673 | { |
---|
2674 | struct em_context_desc *TXD; |
---|
2675 | struct em_buffer *tx_buffer; |
---|
2676 | int curr_txd; |
---|
2677 | |
---|
2678 | if (mp->m_pkthdr.csum_flags) { |
---|
2679 | |
---|
2680 | if (mp->m_pkthdr.csum_flags & CSUM_TCP) { |
---|
2681 | *txd_upper = E1000_TXD_POPTS_TXSM << 8; |
---|
2682 | *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
---|
2683 | if (adapter->active_checksum_context == OFFLOAD_TCP_IP) |
---|
2684 | return; |
---|
2685 | else |
---|
2686 | adapter->active_checksum_context = OFFLOAD_TCP_IP; |
---|
2687 | |
---|
2688 | } else if (mp->m_pkthdr.csum_flags & CSUM_UDP) { |
---|
2689 | *txd_upper = E1000_TXD_POPTS_TXSM << 8; |
---|
2690 | *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
---|
2691 | if (adapter->active_checksum_context == OFFLOAD_UDP_IP) |
---|
2692 | return; |
---|
2693 | else |
---|
2694 | adapter->active_checksum_context = OFFLOAD_UDP_IP; |
---|
2695 | } else { |
---|
2696 | *txd_upper = 0; |
---|
2697 | *txd_lower = 0; |
---|
2698 | return; |
---|
2699 | } |
---|
2700 | } else { |
---|
2701 | *txd_upper = 0; |
---|
2702 | *txd_lower = 0; |
---|
2703 | return; |
---|
2704 | } |
---|
2705 | |
---|
2706 | /* If we reach this point, the checksum offload context |
---|
2707 | * needs to be reset. |
---|
2708 | */ |
---|
2709 | curr_txd = adapter->next_avail_tx_desc; |
---|
2710 | tx_buffer = &adapter->tx_buffer_area[curr_txd]; |
---|
2711 | TXD = (struct em_context_desc *) &adapter->tx_desc_base[curr_txd]; |
---|
2712 | |
---|
2713 | TXD->lower_setup.ip_fields.ipcss = ETHER_HDR_LEN; |
---|
2714 | TXD->lower_setup.ip_fields.ipcso = |
---|
2715 | ETHER_HDR_LEN + offsetof(struct ip, ip_sum); |
---|
2716 | TXD->lower_setup.ip_fields.ipcse = |
---|
2717 | htole16(ETHER_HDR_LEN + sizeof(struct ip) - 1); |
---|
2718 | |
---|
2719 | TXD->upper_setup.tcp_fields.tucss = |
---|
2720 | ETHER_HDR_LEN + sizeof(struct ip); |
---|
2721 | TXD->upper_setup.tcp_fields.tucse = htole16(0); |
---|
2722 | |
---|
2723 | if (adapter->active_checksum_context == OFFLOAD_TCP_IP) { |
---|
2724 | TXD->upper_setup.tcp_fields.tucso = |
---|
2725 | ETHER_HDR_LEN + sizeof(struct ip) + |
---|
2726 | offsetof(struct tcphdr, th_sum); |
---|
2727 | } else if (adapter->active_checksum_context == OFFLOAD_UDP_IP) { |
---|
2728 | TXD->upper_setup.tcp_fields.tucso = |
---|
2729 | ETHER_HDR_LEN + sizeof(struct ip) + |
---|
2730 | offsetof(struct udphdr, uh_sum); |
---|
2731 | } |
---|
2732 | |
---|
2733 | TXD->tcp_seg_setup.data = htole32(0); |
---|
2734 | TXD->cmd_and_length = htole32(adapter->txd_cmd | E1000_TXD_CMD_DEXT); |
---|
2735 | |
---|
2736 | tx_buffer->m_head = NULL; |
---|
2737 | |
---|
2738 | if (++curr_txd == adapter->num_tx_desc) |
---|
2739 | curr_txd = 0; |
---|
2740 | |
---|
2741 | adapter->num_tx_desc_avail--; |
---|
2742 | adapter->next_avail_tx_desc = curr_txd; |
---|
2743 | |
---|
2744 | return; |
---|
2745 | } |
---|
2746 | #endif |
---|
2747 | |
---|
2748 | /********************************************************************** |
---|
2749 | * |
---|
2750 | * Examine each tx_buffer in the used queue. If the hardware is done |
---|
2751 | * processing the packet then free associated resources. The |
---|
2752 | * tx_buffer is put back on the free queue. |
---|
2753 | * |
---|
2754 | **********************************************************************/ |
---|
2755 | static void |
---|
2756 | em_clean_transmit_interrupts(struct adapter * adapter) |
---|
2757 | { |
---|
2758 | int i, num_avail; |
---|
2759 | struct em_buffer *tx_buffer; |
---|
2760 | struct em_tx_desc *tx_desc; |
---|
2761 | struct ifnet *ifp = &adapter->arpcom.ac_if; |
---|
2762 | |
---|
2763 | mtx_assert(&adapter->mtx, MA_OWNED); |
---|
2764 | |
---|
2765 | if (adapter->num_tx_desc_avail == adapter->num_tx_desc) |
---|
2766 | return; |
---|
2767 | |
---|
2768 | num_avail = adapter->num_tx_desc_avail; |
---|
2769 | i = adapter->oldest_used_tx_desc; |
---|
2770 | |
---|
2771 | tx_buffer = &adapter->tx_buffer_area[i]; |
---|
2772 | tx_desc = &adapter->tx_desc_base[i]; |
---|
2773 | |
---|
2774 | bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, |
---|
2775 | BUS_DMASYNC_POSTREAD); |
---|
2776 | while (tx_desc->upper.fields.status & E1000_TXD_STAT_DD) { |
---|
2777 | |
---|
2778 | tx_desc->upper.data = 0; |
---|
2779 | num_avail++; |
---|
2780 | |
---|
2781 | if (tx_buffer->m_head) { |
---|
2782 | ifp->if_opackets++; |
---|
2783 | bus_dmamap_unload(adapter->txtag, tx_buffer->map); |
---|
2784 | bus_dmamap_destroy(adapter->txtag, tx_buffer->map); |
---|
2785 | |
---|
2786 | m_freem(tx_buffer->m_head); |
---|
2787 | tx_buffer->m_head = NULL; |
---|
2788 | } |
---|
2789 | |
---|
2790 | if (++i == adapter->num_tx_desc) |
---|
2791 | i = 0; |
---|
2792 | |
---|
2793 | tx_buffer = &adapter->tx_buffer_area[i]; |
---|
2794 | tx_desc = &adapter->tx_desc_base[i]; |
---|
2795 | } |
---|
2796 | bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, |
---|
2797 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
---|
2798 | |
---|
2799 | adapter->oldest_used_tx_desc = i; |
---|
2800 | |
---|
2801 | /* |
---|
2802 | * If we have enough room, clear IFF_OACTIVE to tell the stack |
---|
2803 | * that it is OK to send packets. |
---|
2804 | * If there are no pending descriptors, clear the timeout. Otherwise, |
---|
2805 | * if some descriptors have been freed, restart the timeout. |
---|
2806 | */ |
---|
2807 | if (num_avail > EM_TX_CLEANUP_THRESHOLD) { |
---|
2808 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
2809 | if (num_avail == adapter->num_tx_desc) |
---|
2810 | ifp->if_timer = 0; |
---|
2811 | else if (num_avail == adapter->num_tx_desc_avail) |
---|
2812 | ifp->if_timer = EM_TX_TIMEOUT; |
---|
2813 | } |
---|
2814 | adapter->num_tx_desc_avail = num_avail; |
---|
2815 | return; |
---|
2816 | } |
---|
2817 | |
---|
2818 | /********************************************************************* |
---|
2819 | * |
---|
2820 | * Get a buffer from system mbuf buffer pool. |
---|
2821 | * |
---|
2822 | **********************************************************************/ |
---|
2823 | static int |
---|
2824 | em_get_buf(int i, struct adapter *adapter, |
---|
2825 | struct mbuf *nmp) |
---|
2826 | { |
---|
2827 | register struct mbuf *mp = nmp; |
---|
2828 | struct em_buffer *rx_buffer; |
---|
2829 | struct ifnet *ifp; |
---|
2830 | bus_addr_t paddr; |
---|
2831 | #ifndef __rtems__ |
---|
2832 | int error; |
---|
2833 | #endif |
---|
2834 | |
---|
2835 | ifp = &adapter->arpcom.ac_if; |
---|
2836 | |
---|
2837 | if (mp == NULL) { |
---|
2838 | #ifndef __rtems__ |
---|
2839 | mp = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); |
---|
2840 | #else |
---|
2841 | MGETHDR(mp, M_DONTWAIT, MT_DATA); |
---|
2842 | if ( mp ) { |
---|
2843 | MCLGET( mp, M_DONTWAIT ); |
---|
2844 | if ( !(mp->m_flags & M_EXT) ) { |
---|
2845 | m_freem(mp); |
---|
2846 | mp = 0; |
---|
2847 | } |
---|
2848 | } |
---|
2849 | #endif |
---|
2850 | if (mp == NULL) { |
---|
2851 | adapter->mbuf_cluster_failed++; |
---|
2852 | return(ENOBUFS); |
---|
2853 | } |
---|
2854 | mp->m_len = mp->m_pkthdr.len = MCLBYTES; |
---|
2855 | } else { |
---|
2856 | mp->m_len = mp->m_pkthdr.len = MCLBYTES; |
---|
2857 | mp->m_data = mp->m_ext.ext_buf; |
---|
2858 | mp->m_next = NULL; |
---|
2859 | } |
---|
2860 | |
---|
2861 | if (ifp->if_mtu <= ETHERMTU) { |
---|
2862 | m_adj(mp, ETHER_ALIGN); |
---|
2863 | } |
---|
2864 | |
---|
2865 | rx_buffer = &adapter->rx_buffer_area[i]; |
---|
2866 | |
---|
2867 | #ifndef __rtems__ |
---|
2868 | /* |
---|
2869 | * Using memory from the mbuf cluster pool, invoke the |
---|
2870 | * bus_dma machinery to arrange the memory mapping. |
---|
2871 | */ |
---|
2872 | error = bus_dmamap_load(adapter->rxtag, rx_buffer->map, |
---|
2873 | mtod(mp, void *), mp->m_len, |
---|
2874 | em_dmamap_cb, &paddr, 0); |
---|
2875 | if (error) { |
---|
2876 | m_free(mp); |
---|
2877 | return(error); |
---|
2878 | } |
---|
2879 | #else |
---|
2880 | paddr = kvtop(mtod(mp, void*)); |
---|
2881 | #endif |
---|
2882 | |
---|
2883 | rx_buffer->m_head = mp; |
---|
2884 | adapter->rx_desc_base[i].buffer_addr = htole64(paddr); |
---|
2885 | bus_dmamap_sync(adapter->rxtag, rx_buffer->map, BUS_DMASYNC_PREREAD); |
---|
2886 | |
---|
2887 | return(0); |
---|
2888 | } |
---|
2889 | |
---|
2890 | /********************************************************************* |
---|
2891 | * |
---|
2892 | * Allocate memory for rx_buffer structures. Since we use one |
---|
2893 | * rx_buffer per received packet, the maximum number of rx_buffer's |
---|
2894 | * that we'll need is equal to the number of receive descriptors |
---|
2895 | * that we've allocated. |
---|
2896 | * |
---|
2897 | **********************************************************************/ |
---|
2898 | static int |
---|
2899 | em_allocate_receive_structures(struct adapter * adapter) |
---|
2900 | { |
---|
2901 | int i, error; |
---|
2902 | #ifndef __rtems__ |
---|
2903 | struct em_buffer *rx_buffer; |
---|
2904 | #endif |
---|
2905 | |
---|
2906 | if (!(adapter->rx_buffer_area = |
---|
2907 | (struct em_buffer *) malloc(sizeof(struct em_buffer) * |
---|
2908 | adapter->num_rx_desc, M_DEVBUF, |
---|
2909 | M_NOWAIT))) { |
---|
2910 | printf("em%d: Unable to allocate rx_buffer memory\n", |
---|
2911 | adapter->unit); |
---|
2912 | return(ENOMEM); |
---|
2913 | } |
---|
2914 | |
---|
2915 | bzero(adapter->rx_buffer_area, |
---|
2916 | sizeof(struct em_buffer) * adapter->num_rx_desc); |
---|
2917 | |
---|
2918 | #ifndef __rtems__ |
---|
2919 | error = bus_dma_tag_create(NULL, /* parent */ |
---|
2920 | 1, 0, /* alignment, bounds */ |
---|
2921 | BUS_SPACE_MAXADDR, /* lowaddr */ |
---|
2922 | BUS_SPACE_MAXADDR, /* highaddr */ |
---|
2923 | NULL, NULL, /* filter, filterarg */ |
---|
2924 | MCLBYTES, /* maxsize */ |
---|
2925 | 1, /* nsegments */ |
---|
2926 | MCLBYTES, /* maxsegsize */ |
---|
2927 | BUS_DMA_ALLOCNOW, /* flags */ |
---|
2928 | NULL, /* lockfunc */ |
---|
2929 | NULL, /* lockarg */ |
---|
2930 | &adapter->rxtag); |
---|
2931 | if (error != 0) { |
---|
2932 | printf("em%d: em_allocate_receive_structures: " |
---|
2933 | "bus_dma_tag_create failed; error %u\n", |
---|
2934 | adapter->unit, error); |
---|
2935 | goto fail_0; |
---|
2936 | } |
---|
2937 | rx_buffer = adapter->rx_buffer_area; |
---|
2938 | for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) { |
---|
2939 | error = bus_dmamap_create(adapter->rxtag, BUS_DMA_NOWAIT, |
---|
2940 | &rx_buffer->map); |
---|
2941 | if (error != 0) { |
---|
2942 | printf("em%d: em_allocate_receive_structures: " |
---|
2943 | "bus_dmamap_create failed; error %u\n", |
---|
2944 | adapter->unit, error); |
---|
2945 | goto fail_1; |
---|
2946 | } |
---|
2947 | } |
---|
2948 | |
---|
2949 | #else |
---|
2950 | error = 0; |
---|
2951 | #endif |
---|
2952 | |
---|
2953 | for (i = 0; i < adapter->num_rx_desc; i++) { |
---|
2954 | error = em_get_buf(i, adapter, NULL); |
---|
2955 | if (error != 0) { |
---|
2956 | adapter->rx_buffer_area[i].m_head = NULL; |
---|
2957 | adapter->rx_desc_base[i].buffer_addr = 0; |
---|
2958 | return(error); |
---|
2959 | } |
---|
2960 | } |
---|
2961 | bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map, |
---|
2962 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
---|
2963 | |
---|
2964 | return(0); |
---|
2965 | |
---|
2966 | #ifndef __rtems__ |
---|
2967 | fail_1: |
---|
2968 | bus_dma_tag_destroy(adapter->rxtag); |
---|
2969 | fail_0: |
---|
2970 | adapter->rxtag = NULL; |
---|
2971 | #endif |
---|
2972 | free(adapter->rx_buffer_area, M_DEVBUF); |
---|
2973 | adapter->rx_buffer_area = NULL; |
---|
2974 | return (error); |
---|
2975 | } |
---|
2976 | |
---|
2977 | /********************************************************************* |
---|
2978 | * |
---|
2979 | * Allocate and initialize receive structures. |
---|
2980 | * |
---|
2981 | **********************************************************************/ |
---|
2982 | static int |
---|
2983 | em_setup_receive_structures(struct adapter * adapter) |
---|
2984 | { |
---|
2985 | bzero((void *) adapter->rx_desc_base, |
---|
2986 | (sizeof(struct em_rx_desc)) * adapter->num_rx_desc); |
---|
2987 | |
---|
2988 | if (em_allocate_receive_structures(adapter)) |
---|
2989 | return ENOMEM; |
---|
2990 | |
---|
2991 | /* Setup our descriptor pointers */ |
---|
2992 | adapter->next_rx_desc_to_check = 0; |
---|
2993 | return(0); |
---|
2994 | } |
---|
2995 | |
---|
2996 | /********************************************************************* |
---|
2997 | * |
---|
2998 | * Enable receive unit. |
---|
2999 | * |
---|
3000 | **********************************************************************/ |
---|
3001 | static void |
---|
3002 | em_initialize_receive_unit(struct adapter * adapter) |
---|
3003 | { |
---|
3004 | u_int32_t reg_rctl; |
---|
3005 | #ifndef __rtems__ |
---|
3006 | u_int32_t reg_rxcsum; |
---|
3007 | #endif |
---|
3008 | struct ifnet *ifp; |
---|
3009 | u_int64_t bus_addr; |
---|
3010 | |
---|
3011 | INIT_DEBUGOUT("em_initialize_receive_unit: begin"); |
---|
3012 | ifp = &adapter->arpcom.ac_if; |
---|
3013 | |
---|
3014 | /* Make sure receives are disabled while setting up the descriptor ring */ |
---|
3015 | E1000_WRITE_REG(&adapter->hw, RCTL, 0); |
---|
3016 | |
---|
3017 | /* Set the Receive Delay Timer Register */ |
---|
3018 | E1000_WRITE_REG(&adapter->hw, RDTR, |
---|
3019 | adapter->rx_int_delay.value | E1000_RDT_FPDB); |
---|
3020 | |
---|
3021 | if(adapter->hw.mac_type >= em_82540) { |
---|
3022 | E1000_WRITE_REG(&adapter->hw, RADV, |
---|
3023 | adapter->rx_abs_int_delay.value); |
---|
3024 | |
---|
3025 | /* Set the interrupt throttling rate. Value is calculated |
---|
3026 | * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */ |
---|
3027 | #define MAX_INTS_PER_SEC 8000 |
---|
3028 | #define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256) |
---|
3029 | E1000_WRITE_REG(&adapter->hw, ITR, DEFAULT_ITR); |
---|
3030 | } |
---|
3031 | |
---|
3032 | /* Setup the Base and Length of the Rx Descriptor Ring */ |
---|
3033 | bus_addr = adapter->rxdma.dma_paddr; |
---|
3034 | E1000_WRITE_REG(&adapter->hw, RDBAL, (u_int32_t)bus_addr); |
---|
3035 | E1000_WRITE_REG(&adapter->hw, RDBAH, (u_int32_t)(bus_addr >> 32)); |
---|
3036 | E1000_WRITE_REG(&adapter->hw, RDLEN, adapter->num_rx_desc * |
---|
3037 | sizeof(struct em_rx_desc)); |
---|
3038 | |
---|
3039 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ |
---|
3040 | E1000_WRITE_REG(&adapter->hw, RDH, 0); |
---|
3041 | E1000_WRITE_REG(&adapter->hw, RDT, adapter->num_rx_desc - 1); |
---|
3042 | |
---|
3043 | /* Setup the Receive Control Register */ |
---|
3044 | reg_rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO | |
---|
3045 | E1000_RCTL_RDMTS_HALF | |
---|
3046 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); |
---|
3047 | |
---|
3048 | if (adapter->hw.tbi_compatibility_on == TRUE) |
---|
3049 | reg_rctl |= E1000_RCTL_SBP; |
---|
3050 | |
---|
3051 | |
---|
3052 | switch (adapter->rx_buffer_len) { |
---|
3053 | default: |
---|
3054 | case EM_RXBUFFER_2048: |
---|
3055 | reg_rctl |= E1000_RCTL_SZ_2048; |
---|
3056 | break; |
---|
3057 | case EM_RXBUFFER_4096: |
---|
3058 | reg_rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX | E1000_RCTL_LPE; |
---|
3059 | break; |
---|
3060 | case EM_RXBUFFER_8192: |
---|
3061 | reg_rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX | E1000_RCTL_LPE; |
---|
3062 | break; |
---|
3063 | case EM_RXBUFFER_16384: |
---|
3064 | reg_rctl |= E1000_RCTL_SZ_16384 | E1000_RCTL_BSEX | E1000_RCTL_LPE; |
---|
3065 | break; |
---|
3066 | } |
---|
3067 | |
---|
3068 | if (ifp->if_mtu > ETHERMTU) |
---|
3069 | reg_rctl |= E1000_RCTL_LPE; |
---|
3070 | |
---|
3071 | #ifndef __rtems__ |
---|
3072 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
---|
3073 | if ((adapter->hw.mac_type >= em_82543) && |
---|
3074 | (ifp->if_capenable & IFCAP_RXCSUM)) { |
---|
3075 | reg_rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM); |
---|
3076 | reg_rxcsum |= (E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL); |
---|
3077 | E1000_WRITE_REG(&adapter->hw, RXCSUM, reg_rxcsum); |
---|
3078 | } |
---|
3079 | #endif |
---|
3080 | |
---|
3081 | /* Enable Receives */ |
---|
3082 | E1000_WRITE_REG(&adapter->hw, RCTL, reg_rctl); |
---|
3083 | |
---|
3084 | return; |
---|
3085 | } |
---|
3086 | |
---|
3087 | /********************************************************************* |
---|
3088 | * |
---|
3089 | * Free receive related data structures. |
---|
3090 | * |
---|
3091 | **********************************************************************/ |
---|
3092 | static void |
---|
3093 | em_free_receive_structures(struct adapter *adapter) |
---|
3094 | { |
---|
3095 | struct em_buffer *rx_buffer; |
---|
3096 | int i; |
---|
3097 | |
---|
3098 | INIT_DEBUGOUT("free_receive_structures: begin"); |
---|
3099 | |
---|
3100 | if (adapter->rx_buffer_area != NULL) { |
---|
3101 | rx_buffer = adapter->rx_buffer_area; |
---|
3102 | for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) { |
---|
3103 | #ifndef __rtems__ |
---|
3104 | if (rx_buffer->map != NULL) { |
---|
3105 | bus_dmamap_unload(adapter->rxtag, rx_buffer->map); |
---|
3106 | bus_dmamap_destroy(adapter->rxtag, rx_buffer->map); |
---|
3107 | } |
---|
3108 | #endif |
---|
3109 | if (rx_buffer->m_head != NULL) |
---|
3110 | m_freem(rx_buffer->m_head); |
---|
3111 | rx_buffer->m_head = NULL; |
---|
3112 | } |
---|
3113 | } |
---|
3114 | if (adapter->rx_buffer_area != NULL) { |
---|
3115 | free(adapter->rx_buffer_area, M_DEVBUF); |
---|
3116 | adapter->rx_buffer_area = NULL; |
---|
3117 | } |
---|
3118 | #ifndef __rtems__ |
---|
3119 | if (adapter->rxtag != NULL) { |
---|
3120 | bus_dma_tag_destroy(adapter->rxtag); |
---|
3121 | adapter->rxtag = NULL; |
---|
3122 | } |
---|
3123 | #endif |
---|
3124 | return; |
---|
3125 | } |
---|
3126 | |
---|
3127 | /********************************************************************* |
---|
3128 | * |
---|
3129 | * This routine executes in interrupt context. It replenishes |
---|
3130 | * the mbufs in the descriptor and sends data which has been |
---|
3131 | * dma'ed into host memory to upper layer. |
---|
3132 | * |
---|
3133 | * We loop at most count times if count is > 0, or until done if |
---|
3134 | * count < 0. |
---|
3135 | * |
---|
3136 | *********************************************************************/ |
---|
3137 | static void |
---|
3138 | em_process_receive_interrupts(struct adapter * adapter, int count) |
---|
3139 | { |
---|
3140 | struct ifnet *ifp; |
---|
3141 | struct mbuf *mp; |
---|
3142 | #if __FreeBSD_version < 500000 |
---|
3143 | struct ether_header *eh; |
---|
3144 | #endif |
---|
3145 | u_int8_t accept_frame = 0; |
---|
3146 | u_int8_t eop = 0; |
---|
3147 | u_int16_t len, desc_len, prev_len_adj; |
---|
3148 | int i; |
---|
3149 | |
---|
3150 | /* Pointer to the receive descriptor being examined. */ |
---|
3151 | struct em_rx_desc *current_desc; |
---|
3152 | |
---|
3153 | mtx_assert(&adapter->mtx, MA_OWNED); |
---|
3154 | |
---|
3155 | ifp = &adapter->arpcom.ac_if; |
---|
3156 | i = adapter->next_rx_desc_to_check; |
---|
3157 | current_desc = &adapter->rx_desc_base[i]; |
---|
3158 | bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map, |
---|
3159 | BUS_DMASYNC_POSTREAD); |
---|
3160 | |
---|
3161 | if (!((current_desc->status) & E1000_RXD_STAT_DD)) { |
---|
3162 | return; |
---|
3163 | } |
---|
3164 | |
---|
3165 | while ((current_desc->status & E1000_RXD_STAT_DD) && (count != 0)) { |
---|
3166 | |
---|
3167 | mp = adapter->rx_buffer_area[i].m_head; |
---|
3168 | bus_dmamap_sync(adapter->rxtag, adapter->rx_buffer_area[i].map, |
---|
3169 | BUS_DMASYNC_POSTREAD); |
---|
3170 | |
---|
3171 | accept_frame = 1; |
---|
3172 | prev_len_adj = 0; |
---|
3173 | desc_len = le16toh(current_desc->length); |
---|
3174 | if (current_desc->status & E1000_RXD_STAT_EOP) { |
---|
3175 | count--; |
---|
3176 | eop = 1; |
---|
3177 | if (desc_len < ETHER_CRC_LEN) { |
---|
3178 | len = 0; |
---|
3179 | prev_len_adj = ETHER_CRC_LEN - desc_len; |
---|
3180 | } |
---|
3181 | else { |
---|
3182 | len = desc_len - ETHER_CRC_LEN; |
---|
3183 | } |
---|
3184 | } else { |
---|
3185 | eop = 0; |
---|
3186 | len = desc_len; |
---|
3187 | } |
---|
3188 | |
---|
3189 | if (current_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { |
---|
3190 | u_int8_t last_byte; |
---|
3191 | u_int32_t pkt_len = desc_len; |
---|
3192 | |
---|
3193 | if (adapter->fmp != NULL) |
---|
3194 | pkt_len += adapter->fmp->m_pkthdr.len; |
---|
3195 | |
---|
3196 | last_byte = *(mtod(mp, caddr_t) + desc_len - 1); |
---|
3197 | |
---|
3198 | if (TBI_ACCEPT(&adapter->hw, current_desc->status, |
---|
3199 | current_desc->errors, |
---|
3200 | pkt_len, last_byte)) { |
---|
3201 | em_tbi_adjust_stats(&adapter->hw, |
---|
3202 | &adapter->stats, |
---|
3203 | pkt_len, |
---|
3204 | adapter->hw.mac_addr); |
---|
3205 | if (len > 0) len--; |
---|
3206 | } |
---|
3207 | else { |
---|
3208 | accept_frame = 0; |
---|
3209 | } |
---|
3210 | } |
---|
3211 | |
---|
3212 | if (accept_frame) { |
---|
3213 | |
---|
3214 | if (em_get_buf(i, adapter, NULL) == ENOBUFS) { |
---|
3215 | adapter->dropped_pkts++; |
---|
3216 | em_get_buf(i, adapter, mp); |
---|
3217 | if (adapter->fmp != NULL) |
---|
3218 | m_freem(adapter->fmp); |
---|
3219 | adapter->fmp = NULL; |
---|
3220 | adapter->lmp = NULL; |
---|
3221 | break; |
---|
3222 | } |
---|
3223 | |
---|
3224 | /* Assign correct length to the current fragment */ |
---|
3225 | mp->m_len = len; |
---|
3226 | |
---|
3227 | if (adapter->fmp == NULL) { |
---|
3228 | mp->m_pkthdr.len = len; |
---|
3229 | adapter->fmp = mp; /* Store the first mbuf */ |
---|
3230 | adapter->lmp = mp; |
---|
3231 | } else { |
---|
3232 | /* Chain mbuf's together */ |
---|
3233 | mp->m_flags &= ~M_PKTHDR; |
---|
3234 | /* |
---|
3235 | * Adjust length of previous mbuf in chain if we |
---|
3236 | * received less than 4 bytes in the last descriptor. |
---|
3237 | */ |
---|
3238 | if (prev_len_adj > 0) { |
---|
3239 | adapter->lmp->m_len -= prev_len_adj; |
---|
3240 | adapter->fmp->m_pkthdr.len -= prev_len_adj; |
---|
3241 | } |
---|
3242 | adapter->lmp->m_next = mp; |
---|
3243 | adapter->lmp = adapter->lmp->m_next; |
---|
3244 | adapter->fmp->m_pkthdr.len += len; |
---|
3245 | } |
---|
3246 | |
---|
3247 | if (eop) { |
---|
3248 | adapter->fmp->m_pkthdr.rcvif = ifp; |
---|
3249 | ifp->if_ipackets++; |
---|
3250 | |
---|
3251 | #if __FreeBSD_version < 500000 |
---|
3252 | eh = mtod(adapter->fmp, struct ether_header *); |
---|
3253 | /* Remove ethernet header from mbuf */ |
---|
3254 | m_adj(adapter->fmp, sizeof(struct ether_header)); |
---|
3255 | #ifndef __rtems__ |
---|
3256 | em_receive_checksum(adapter, current_desc, |
---|
3257 | adapter->fmp); |
---|
3258 | if (current_desc->status & E1000_RXD_STAT_VP) |
---|
3259 | VLAN_INPUT_TAG(eh, adapter->fmp, |
---|
3260 | (current_desc->special & |
---|
3261 | E1000_RXD_SPC_VLAN_MASK)); |
---|
3262 | else |
---|
3263 | #endif |
---|
3264 | ether_input(ifp, eh, adapter->fmp); |
---|
3265 | #else |
---|
3266 | |
---|
3267 | em_receive_checksum(adapter, current_desc, |
---|
3268 | adapter->fmp); |
---|
3269 | if (current_desc->status & E1000_RXD_STAT_VP) |
---|
3270 | VLAN_INPUT_TAG(ifp, adapter->fmp, |
---|
3271 | (current_desc->special & |
---|
3272 | E1000_RXD_SPC_VLAN_MASK), |
---|
3273 | adapter->fmp = NULL); |
---|
3274 | |
---|
3275 | if (adapter->fmp != NULL) { |
---|
3276 | EM_UNLOCK(adapter); |
---|
3277 | (*ifp->if_input)(ifp, adapter->fmp); |
---|
3278 | EM_LOCK(adapter); |
---|
3279 | } |
---|
3280 | #endif |
---|
3281 | adapter->fmp = NULL; |
---|
3282 | adapter->lmp = NULL; |
---|
3283 | } |
---|
3284 | } else { |
---|
3285 | adapter->dropped_pkts++; |
---|
3286 | em_get_buf(i, adapter, mp); |
---|
3287 | if (adapter->fmp != NULL) |
---|
3288 | m_freem(adapter->fmp); |
---|
3289 | adapter->fmp = NULL; |
---|
3290 | adapter->lmp = NULL; |
---|
3291 | } |
---|
3292 | |
---|
3293 | /* Zero out the receive descriptors status */ |
---|
3294 | current_desc->status = 0; |
---|
3295 | |
---|
3296 | /* Advance the E1000's Receive Queue #0 "Tail Pointer". */ |
---|
3297 | E1000_WRITE_REG(&adapter->hw, RDT, i); |
---|
3298 | |
---|
3299 | /* Advance our pointers to the next descriptor */ |
---|
3300 | if (++i == adapter->num_rx_desc) { |
---|
3301 | i = 0; |
---|
3302 | current_desc = adapter->rx_desc_base; |
---|
3303 | } else |
---|
3304 | current_desc++; |
---|
3305 | } |
---|
3306 | bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map, |
---|
3307 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
---|
3308 | adapter->next_rx_desc_to_check = i; |
---|
3309 | return; |
---|
3310 | } |
---|
3311 | |
---|
3312 | #ifndef __rtems__ |
---|
3313 | /********************************************************************* |
---|
3314 | * |
---|
3315 | * Verify that the hardware indicated that the checksum is valid. |
---|
3316 | * Inform the stack about the status of checksum so that stack |
---|
3317 | * doesn't spend time verifying the checksum. |
---|
3318 | * |
---|
3319 | *********************************************************************/ |
---|
3320 | static void |
---|
3321 | em_receive_checksum(struct adapter *adapter, |
---|
3322 | struct em_rx_desc *rx_desc, |
---|
3323 | struct mbuf *mp) |
---|
3324 | { |
---|
3325 | /* 82543 or newer only */ |
---|
3326 | if ((adapter->hw.mac_type < em_82543) || |
---|
3327 | /* Ignore Checksum bit is set */ |
---|
3328 | (rx_desc->status & E1000_RXD_STAT_IXSM)) { |
---|
3329 | mp->m_pkthdr.csum_flags = 0; |
---|
3330 | return; |
---|
3331 | } |
---|
3332 | |
---|
3333 | if (rx_desc->status & E1000_RXD_STAT_IPCS) { |
---|
3334 | /* Did it pass? */ |
---|
3335 | if (!(rx_desc->errors & E1000_RXD_ERR_IPE)) { |
---|
3336 | /* IP Checksum Good */ |
---|
3337 | mp->m_pkthdr.csum_flags = CSUM_IP_CHECKED; |
---|
3338 | mp->m_pkthdr.csum_flags |= CSUM_IP_VALID; |
---|
3339 | |
---|
3340 | } else { |
---|
3341 | mp->m_pkthdr.csum_flags = 0; |
---|
3342 | } |
---|
3343 | } |
---|
3344 | |
---|
3345 | if (rx_desc->status & E1000_RXD_STAT_TCPCS) { |
---|
3346 | /* Did it pass? */ |
---|
3347 | if (!(rx_desc->errors & E1000_RXD_ERR_TCPE)) { |
---|
3348 | mp->m_pkthdr.csum_flags |= |
---|
3349 | (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); |
---|
3350 | mp->m_pkthdr.csum_data = htons(0xffff); |
---|
3351 | } |
---|
3352 | } |
---|
3353 | |
---|
3354 | return; |
---|
3355 | } |
---|
3356 | |
---|
3357 | |
---|
3358 | static void |
---|
3359 | em_enable_vlans(struct adapter *adapter) |
---|
3360 | { |
---|
3361 | uint32_t ctrl; |
---|
3362 | |
---|
3363 | E1000_WRITE_REG(&adapter->hw, VET, ETHERTYPE_VLAN); |
---|
3364 | |
---|
3365 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
---|
3366 | ctrl |= E1000_CTRL_VME; |
---|
3367 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
---|
3368 | |
---|
3369 | return; |
---|
3370 | } |
---|
3371 | |
---|
3372 | static void |
---|
3373 | em_disable_vlans(struct adapter *adapter) |
---|
3374 | { |
---|
3375 | uint32_t ctrl; |
---|
3376 | |
---|
3377 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
---|
3378 | ctrl &= ~E1000_CTRL_VME; |
---|
3379 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
---|
3380 | |
---|
3381 | return; |
---|
3382 | } |
---|
3383 | #endif |
---|
3384 | |
---|
3385 | static void |
---|
3386 | em_enable_intr(struct adapter * adapter) |
---|
3387 | { |
---|
3388 | E1000_WRITE_REG(&adapter->hw, IMS, (IMS_ENABLE_MASK)); |
---|
3389 | return; |
---|
3390 | } |
---|
3391 | |
---|
3392 | static void |
---|
3393 | em_disable_intr(struct adapter *adapter) |
---|
3394 | { |
---|
3395 | /* |
---|
3396 | * The first version of 82542 had an errata where when link was forced it |
---|
3397 | * would stay up even up even if the cable was disconnected. Sequence errors |
---|
3398 | * were used to detect the disconnect and then the driver would unforce the link. |
---|
3399 | * This code in the in the ISR. For this to work correctly the Sequence error |
---|
3400 | * interrupt had to be enabled all the time. |
---|
3401 | */ |
---|
3402 | |
---|
3403 | if (adapter->hw.mac_type == em_82542_rev2_0) |
---|
3404 | E1000_WRITE_REG(&adapter->hw, IMC, |
---|
3405 | (0xffffffff & ~E1000_IMC_RXSEQ)); |
---|
3406 | else |
---|
3407 | E1000_WRITE_REG(&adapter->hw, IMC, |
---|
3408 | 0xffffffff); |
---|
3409 | return; |
---|
3410 | } |
---|
3411 | |
---|
3412 | static int |
---|
3413 | em_is_valid_ether_addr(u_int8_t *addr) |
---|
3414 | { |
---|
3415 | char zero_addr[6] = { 0, 0, 0, 0, 0, 0 }; |
---|
3416 | |
---|
3417 | if ((addr[0] & 1) || (!bcmp(addr, zero_addr, ETHER_ADDR_LEN))) { |
---|
3418 | return (FALSE); |
---|
3419 | } |
---|
3420 | |
---|
3421 | return(TRUE); |
---|
3422 | } |
---|
3423 | |
---|
3424 | void |
---|
3425 | em_write_pci_cfg(struct em_hw *hw, |
---|
3426 | uint32_t reg, |
---|
3427 | uint16_t *value) |
---|
3428 | { |
---|
3429 | pci_write_config(((struct em_osdep *)hw->back)->dev, reg, |
---|
3430 | *value, 2); |
---|
3431 | } |
---|
3432 | |
---|
3433 | void |
---|
3434 | em_read_pci_cfg(struct em_hw *hw, uint32_t reg, |
---|
3435 | uint16_t *value) |
---|
3436 | { |
---|
3437 | *value = pci_read_config(((struct em_osdep *)hw->back)->dev, |
---|
3438 | reg, 2); |
---|
3439 | return; |
---|
3440 | } |
---|
3441 | |
---|
3442 | void |
---|
3443 | em_pci_set_mwi(struct em_hw *hw) |
---|
3444 | { |
---|
3445 | pci_write_config(((struct em_osdep *)hw->back)->dev, |
---|
3446 | PCIR_COMMAND, |
---|
3447 | (hw->pci_cmd_word | CMD_MEM_WRT_INVALIDATE), 2); |
---|
3448 | return; |
---|
3449 | } |
---|
3450 | |
---|
3451 | void |
---|
3452 | em_pci_clear_mwi(struct em_hw *hw) |
---|
3453 | { |
---|
3454 | pci_write_config(((struct em_osdep *)hw->back)->dev, |
---|
3455 | PCIR_COMMAND, |
---|
3456 | (hw->pci_cmd_word & ~CMD_MEM_WRT_INVALIDATE), 2); |
---|
3457 | return; |
---|
3458 | } |
---|
3459 | |
---|
3460 | uint32_t |
---|
3461 | em_io_read(struct em_hw *hw, unsigned long port) |
---|
3462 | { |
---|
3463 | return(inl(port)); |
---|
3464 | } |
---|
3465 | |
---|
3466 | void |
---|
3467 | em_io_write(struct em_hw *hw, unsigned long port, uint32_t value) |
---|
3468 | { |
---|
3469 | #ifndef __rtems__ |
---|
3470 | outl(port, value); |
---|
3471 | #else |
---|
3472 | /* everybody else has this the other way round! */ |
---|
3473 | outl(value, port); |
---|
3474 | #endif |
---|
3475 | return; |
---|
3476 | } |
---|
3477 | |
---|
3478 | /********************************************************************* |
---|
3479 | * 82544 Coexistence issue workaround. |
---|
3480 | * There are 2 issues. |
---|
3481 | * 1. Transmit Hang issue. |
---|
3482 | * To detect this issue, following equation can be used... |
---|
3483 | * SIZE[3:0] + ADDR[2:0] = SUM[3:0]. |
---|
3484 | * If SUM[3:0] is in between 1 to 4, we will have this issue. |
---|
3485 | * |
---|
3486 | * 2. DAC issue. |
---|
3487 | * To detect this issue, following equation can be used... |
---|
3488 | * SIZE[3:0] + ADDR[2:0] = SUM[3:0]. |
---|
3489 | * If SUM[3:0] is in between 9 to c, we will have this issue. |
---|
3490 | * |
---|
3491 | * |
---|
3492 | * WORKAROUND: |
---|
3493 | * Make sure we do not have ending address as 1,2,3,4(Hang) or 9,a,b,c (DAC) |
---|
3494 | * |
---|
3495 | *** *********************************************************************/ |
---|
3496 | static u_int32_t |
---|
3497 | em_fill_descriptors (u_int64_t address, |
---|
3498 | u_int32_t length, |
---|
3499 | PDESC_ARRAY desc_array) |
---|
3500 | { |
---|
3501 | /* Since issue is sensitive to length and address.*/ |
---|
3502 | /* Let us first check the address...*/ |
---|
3503 | u_int32_t safe_terminator; |
---|
3504 | if (length <= 4) { |
---|
3505 | desc_array->descriptor[0].address = address; |
---|
3506 | desc_array->descriptor[0].length = length; |
---|
3507 | desc_array->elements = 1; |
---|
3508 | return desc_array->elements; |
---|
3509 | } |
---|
3510 | safe_terminator = (u_int32_t)((((u_int32_t)address & 0x7) + (length & 0xF)) & 0xF); |
---|
3511 | /* if it does not fall between 0x1 to 0x4 and 0x9 to 0xC then return */ |
---|
3512 | if (safe_terminator == 0 || |
---|
3513 | (safe_terminator > 4 && |
---|
3514 | safe_terminator < 9) || |
---|
3515 | (safe_terminator > 0xC && |
---|
3516 | safe_terminator <= 0xF)) { |
---|
3517 | desc_array->descriptor[0].address = address; |
---|
3518 | desc_array->descriptor[0].length = length; |
---|
3519 | desc_array->elements = 1; |
---|
3520 | return desc_array->elements; |
---|
3521 | } |
---|
3522 | |
---|
3523 | desc_array->descriptor[0].address = address; |
---|
3524 | desc_array->descriptor[0].length = length - 4; |
---|
3525 | desc_array->descriptor[1].address = address + (length - 4); |
---|
3526 | desc_array->descriptor[1].length = 4; |
---|
3527 | desc_array->elements = 2; |
---|
3528 | return desc_array->elements; |
---|
3529 | } |
---|
3530 | |
---|
3531 | /********************************************************************** |
---|
3532 | * |
---|
3533 | * Update the board statistics counters. |
---|
3534 | * |
---|
3535 | **********************************************************************/ |
---|
3536 | static void |
---|
3537 | em_update_stats_counters(struct adapter *adapter) |
---|
3538 | { |
---|
3539 | struct ifnet *ifp; |
---|
3540 | |
---|
3541 | if(adapter->hw.media_type == em_media_type_copper || |
---|
3542 | (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU)) { |
---|
3543 | adapter->stats.symerrs += E1000_READ_REG(&adapter->hw, SYMERRS); |
---|
3544 | adapter->stats.sec += E1000_READ_REG(&adapter->hw, SEC); |
---|
3545 | } |
---|
3546 | adapter->stats.crcerrs += E1000_READ_REG(&adapter->hw, CRCERRS); |
---|
3547 | adapter->stats.mpc += E1000_READ_REG(&adapter->hw, MPC); |
---|
3548 | adapter->stats.scc += E1000_READ_REG(&adapter->hw, SCC); |
---|
3549 | adapter->stats.ecol += E1000_READ_REG(&adapter->hw, ECOL); |
---|
3550 | |
---|
3551 | adapter->stats.mcc += E1000_READ_REG(&adapter->hw, MCC); |
---|
3552 | adapter->stats.latecol += E1000_READ_REG(&adapter->hw, LATECOL); |
---|
3553 | adapter->stats.colc += E1000_READ_REG(&adapter->hw, COLC); |
---|
3554 | adapter->stats.dc += E1000_READ_REG(&adapter->hw, DC); |
---|
3555 | adapter->stats.rlec += E1000_READ_REG(&adapter->hw, RLEC); |
---|
3556 | adapter->stats.xonrxc += E1000_READ_REG(&adapter->hw, XONRXC); |
---|
3557 | adapter->stats.xontxc += E1000_READ_REG(&adapter->hw, XONTXC); |
---|
3558 | adapter->stats.xoffrxc += E1000_READ_REG(&adapter->hw, XOFFRXC); |
---|
3559 | adapter->stats.xofftxc += E1000_READ_REG(&adapter->hw, XOFFTXC); |
---|
3560 | adapter->stats.fcruc += E1000_READ_REG(&adapter->hw, FCRUC); |
---|
3561 | adapter->stats.prc64 += E1000_READ_REG(&adapter->hw, PRC64); |
---|
3562 | adapter->stats.prc127 += E1000_READ_REG(&adapter->hw, PRC127); |
---|
3563 | adapter->stats.prc255 += E1000_READ_REG(&adapter->hw, PRC255); |
---|
3564 | adapter->stats.prc511 += E1000_READ_REG(&adapter->hw, PRC511); |
---|
3565 | adapter->stats.prc1023 += E1000_READ_REG(&adapter->hw, PRC1023); |
---|
3566 | adapter->stats.prc1522 += E1000_READ_REG(&adapter->hw, PRC1522); |
---|
3567 | adapter->stats.gprc += E1000_READ_REG(&adapter->hw, GPRC); |
---|
3568 | adapter->stats.bprc += E1000_READ_REG(&adapter->hw, BPRC); |
---|
3569 | adapter->stats.mprc += E1000_READ_REG(&adapter->hw, MPRC); |
---|
3570 | adapter->stats.gptc += E1000_READ_REG(&adapter->hw, GPTC); |
---|
3571 | |
---|
3572 | /* For the 64-bit byte counters the low dword must be read first. */ |
---|
3573 | /* Both registers clear on the read of the high dword */ |
---|
3574 | |
---|
3575 | adapter->stats.gorcl += E1000_READ_REG(&adapter->hw, GORCL); |
---|
3576 | adapter->stats.gorch += E1000_READ_REG(&adapter->hw, GORCH); |
---|
3577 | adapter->stats.gotcl += E1000_READ_REG(&adapter->hw, GOTCL); |
---|
3578 | adapter->stats.gotch += E1000_READ_REG(&adapter->hw, GOTCH); |
---|
3579 | |
---|
3580 | adapter->stats.rnbc += E1000_READ_REG(&adapter->hw, RNBC); |
---|
3581 | adapter->stats.ruc += E1000_READ_REG(&adapter->hw, RUC); |
---|
3582 | adapter->stats.rfc += E1000_READ_REG(&adapter->hw, RFC); |
---|
3583 | adapter->stats.roc += E1000_READ_REG(&adapter->hw, ROC); |
---|
3584 | adapter->stats.rjc += E1000_READ_REG(&adapter->hw, RJC); |
---|
3585 | |
---|
3586 | adapter->stats.torl += E1000_READ_REG(&adapter->hw, TORL); |
---|
3587 | adapter->stats.torh += E1000_READ_REG(&adapter->hw, TORH); |
---|
3588 | adapter->stats.totl += E1000_READ_REG(&adapter->hw, TOTL); |
---|
3589 | adapter->stats.toth += E1000_READ_REG(&adapter->hw, TOTH); |
---|
3590 | |
---|
3591 | adapter->stats.tpr += E1000_READ_REG(&adapter->hw, TPR); |
---|
3592 | adapter->stats.tpt += E1000_READ_REG(&adapter->hw, TPT); |
---|
3593 | adapter->stats.ptc64 += E1000_READ_REG(&adapter->hw, PTC64); |
---|
3594 | adapter->stats.ptc127 += E1000_READ_REG(&adapter->hw, PTC127); |
---|
3595 | adapter->stats.ptc255 += E1000_READ_REG(&adapter->hw, PTC255); |
---|
3596 | adapter->stats.ptc511 += E1000_READ_REG(&adapter->hw, PTC511); |
---|
3597 | adapter->stats.ptc1023 += E1000_READ_REG(&adapter->hw, PTC1023); |
---|
3598 | adapter->stats.ptc1522 += E1000_READ_REG(&adapter->hw, PTC1522); |
---|
3599 | adapter->stats.mptc += E1000_READ_REG(&adapter->hw, MPTC); |
---|
3600 | adapter->stats.bptc += E1000_READ_REG(&adapter->hw, BPTC); |
---|
3601 | |
---|
3602 | if (adapter->hw.mac_type >= em_82543) { |
---|
3603 | adapter->stats.algnerrc += |
---|
3604 | E1000_READ_REG(&adapter->hw, ALGNERRC); |
---|
3605 | adapter->stats.rxerrc += |
---|
3606 | E1000_READ_REG(&adapter->hw, RXERRC); |
---|
3607 | adapter->stats.tncrs += |
---|
3608 | E1000_READ_REG(&adapter->hw, TNCRS); |
---|
3609 | adapter->stats.cexterr += |
---|
3610 | E1000_READ_REG(&adapter->hw, CEXTERR); |
---|
3611 | adapter->stats.tsctc += |
---|
3612 | E1000_READ_REG(&adapter->hw, TSCTC); |
---|
3613 | adapter->stats.tsctfc += |
---|
3614 | E1000_READ_REG(&adapter->hw, TSCTFC); |
---|
3615 | } |
---|
3616 | ifp = &adapter->arpcom.ac_if; |
---|
3617 | |
---|
3618 | /* Fill out the OS statistics structure */ |
---|
3619 | ifp->if_ibytes = adapter->stats.gorcl; |
---|
3620 | ifp->if_obytes = adapter->stats.gotcl; |
---|
3621 | ifp->if_imcasts = adapter->stats.mprc; |
---|
3622 | ifp->if_collisions = adapter->stats.colc; |
---|
3623 | |
---|
3624 | /* Rx Errors */ |
---|
3625 | ifp->if_ierrors = |
---|
3626 | adapter->dropped_pkts + |
---|
3627 | adapter->stats.rxerrc + |
---|
3628 | adapter->stats.crcerrs + |
---|
3629 | adapter->stats.algnerrc + |
---|
3630 | adapter->stats.rlec + |
---|
3631 | adapter->stats.mpc + adapter->stats.cexterr; |
---|
3632 | |
---|
3633 | /* Tx Errors */ |
---|
3634 | ifp->if_oerrors = adapter->stats.ecol + adapter->stats.latecol; |
---|
3635 | |
---|
3636 | } |
---|
3637 | |
---|
3638 | #ifndef __rtems__ |
---|
3639 | /********************************************************************** |
---|
3640 | * |
---|
3641 | * This routine is called only when em_display_debug_stats is enabled. |
---|
3642 | * This routine provides a way to take a look at important statistics |
---|
3643 | * maintained by the driver and hardware. |
---|
3644 | * |
---|
3645 | **********************************************************************/ |
---|
3646 | static void |
---|
3647 | em_print_debug_info(struct adapter *adapter) |
---|
3648 | { |
---|
3649 | int unit = adapter->unit; |
---|
3650 | uint8_t *hw_addr = adapter->hw.hw_addr; |
---|
3651 | |
---|
3652 | printf("em%d: Adapter hardware address = %p \n", unit, hw_addr); |
---|
3653 | printf("em%d:CTRL = 0x%x\n", unit, |
---|
3654 | E1000_READ_REG(&adapter->hw, CTRL)); |
---|
3655 | printf("em%d:RCTL = 0x%x PS=(0x8402)\n", unit, |
---|
3656 | E1000_READ_REG(&adapter->hw, RCTL)); |
---|
3657 | printf("em%d:tx_int_delay = %d, tx_abs_int_delay = %d\n", unit, |
---|
3658 | E1000_READ_REG(&adapter->hw, TIDV), |
---|
3659 | E1000_READ_REG(&adapter->hw, TADV)); |
---|
3660 | printf("em%d:rx_int_delay = %d, rx_abs_int_delay = %d\n", unit, |
---|
3661 | E1000_READ_REG(&adapter->hw, RDTR), |
---|
3662 | E1000_READ_REG(&adapter->hw, RADV)); |
---|
3663 | printf("em%d: fifo workaround = %lld, fifo_reset = %lld\n", unit, |
---|
3664 | (long long)adapter->tx_fifo_wrk_cnt, |
---|
3665 | (long long)adapter->tx_fifo_reset_cnt); |
---|
3666 | printf("em%d: hw tdh = %d, hw tdt = %d\n", unit, |
---|
3667 | E1000_READ_REG(&adapter->hw, TDH), |
---|
3668 | E1000_READ_REG(&adapter->hw, TDT)); |
---|
3669 | printf("em%d: Num Tx descriptors avail = %d\n", unit, |
---|
3670 | adapter->num_tx_desc_avail); |
---|
3671 | printf("em%d: Tx Descriptors not avail1 = %ld\n", unit, |
---|
3672 | adapter->no_tx_desc_avail1); |
---|
3673 | printf("em%d: Tx Descriptors not avail2 = %ld\n", unit, |
---|
3674 | adapter->no_tx_desc_avail2); |
---|
3675 | printf("em%d: Std mbuf failed = %ld\n", unit, |
---|
3676 | adapter->mbuf_alloc_failed); |
---|
3677 | printf("em%d: Std mbuf cluster failed = %ld\n", unit, |
---|
3678 | adapter->mbuf_cluster_failed); |
---|
3679 | printf("em%d: Driver dropped packets = %ld\n", unit, |
---|
3680 | adapter->dropped_pkts); |
---|
3681 | |
---|
3682 | return; |
---|
3683 | } |
---|
3684 | #endif |
---|
3685 | |
---|
3686 | static void |
---|
3687 | em_print_hw_stats(struct adapter *adapter) |
---|
3688 | { |
---|
3689 | int unit = adapter->unit; |
---|
3690 | |
---|
3691 | printf("em%d: Excessive collisions = %lld\n", unit, |
---|
3692 | (long long)adapter->stats.ecol); |
---|
3693 | printf("em%d: Symbol errors = %lld\n", unit, |
---|
3694 | (long long)adapter->stats.symerrs); |
---|
3695 | printf("em%d: Sequence errors = %lld\n", unit, |
---|
3696 | (long long)adapter->stats.sec); |
---|
3697 | printf("em%d: Defer count = %lld\n", unit, |
---|
3698 | (long long)adapter->stats.dc); |
---|
3699 | |
---|
3700 | printf("em%d: Missed Packets = %lld\n", unit, |
---|
3701 | (long long)adapter->stats.mpc); |
---|
3702 | printf("em%d: Receive No Buffers = %lld\n", unit, |
---|
3703 | (long long)adapter->stats.rnbc); |
---|
3704 | printf("em%d: Receive length errors = %lld\n", unit, |
---|
3705 | (long long)adapter->stats.rlec); |
---|
3706 | printf("em%d: Receive errors = %lld\n", unit, |
---|
3707 | (long long)adapter->stats.rxerrc); |
---|
3708 | printf("em%d: Crc errors = %lld\n", unit, |
---|
3709 | (long long)adapter->stats.crcerrs); |
---|
3710 | printf("em%d: Alignment errors = %lld\n", unit, |
---|
3711 | (long long)adapter->stats.algnerrc); |
---|
3712 | printf("em%d: Carrier extension errors = %lld\n", unit, |
---|
3713 | (long long)adapter->stats.cexterr); |
---|
3714 | |
---|
3715 | printf("em%d: XON Rcvd = %lld\n", unit, |
---|
3716 | (long long)adapter->stats.xonrxc); |
---|
3717 | printf("em%d: XON Xmtd = %lld\n", unit, |
---|
3718 | (long long)adapter->stats.xontxc); |
---|
3719 | printf("em%d: XOFF Rcvd = %lld\n", unit, |
---|
3720 | (long long)adapter->stats.xoffrxc); |
---|
3721 | printf("em%d: XOFF Xmtd = %lld\n", unit, |
---|
3722 | (long long)adapter->stats.xofftxc); |
---|
3723 | |
---|
3724 | printf("em%d: Good Packets Rcvd = %lld\n", unit, |
---|
3725 | (long long)adapter->stats.gprc); |
---|
3726 | printf("em%d: Good Packets Xmtd = %lld\n", unit, |
---|
3727 | (long long)adapter->stats.gptc); |
---|
3728 | |
---|
3729 | return; |
---|
3730 | } |
---|
3731 | |
---|
3732 | #ifndef __rtems__ |
---|
3733 | static int |
---|
3734 | em_sysctl_debug_info(SYSCTL_HANDLER_ARGS) |
---|
3735 | { |
---|
3736 | int error; |
---|
3737 | int result; |
---|
3738 | struct adapter *adapter; |
---|
3739 | |
---|
3740 | result = -1; |
---|
3741 | error = sysctl_handle_int(oidp, &result, 0, req); |
---|
3742 | |
---|
3743 | if (error || !req->newptr) |
---|
3744 | return (error); |
---|
3745 | |
---|
3746 | if (result == 1) { |
---|
3747 | adapter = (struct adapter *)arg1; |
---|
3748 | em_print_debug_info(adapter); |
---|
3749 | } |
---|
3750 | |
---|
3751 | return error; |
---|
3752 | } |
---|
3753 | |
---|
3754 | static int |
---|
3755 | em_sysctl_stats(SYSCTL_HANDLER_ARGS) |
---|
3756 | { |
---|
3757 | int error; |
---|
3758 | int result; |
---|
3759 | struct adapter *adapter; |
---|
3760 | |
---|
3761 | result = -1; |
---|
3762 | error = sysctl_handle_int(oidp, &result, 0, req); |
---|
3763 | |
---|
3764 | if (error || !req->newptr) |
---|
3765 | return (error); |
---|
3766 | |
---|
3767 | if (result == 1) { |
---|
3768 | adapter = (struct adapter *)arg1; |
---|
3769 | em_print_hw_stats(adapter); |
---|
3770 | } |
---|
3771 | |
---|
3772 | return error; |
---|
3773 | } |
---|
3774 | |
---|
3775 | static int |
---|
3776 | em_sysctl_int_delay(SYSCTL_HANDLER_ARGS) |
---|
3777 | { |
---|
3778 | struct em_int_delay_info *info; |
---|
3779 | struct adapter *adapter; |
---|
3780 | u_int32_t regval; |
---|
3781 | int error; |
---|
3782 | int usecs; |
---|
3783 | int ticks; |
---|
3784 | int s; |
---|
3785 | |
---|
3786 | info = (struct em_int_delay_info *)arg1; |
---|
3787 | adapter = info->adapter; |
---|
3788 | usecs = info->value; |
---|
3789 | error = sysctl_handle_int(oidp, &usecs, 0, req); |
---|
3790 | if (error != 0 || req->newptr == NULL) |
---|
3791 | return error; |
---|
3792 | if (usecs < 0 || usecs > E1000_TICKS_TO_USECS(65535)) |
---|
3793 | return EINVAL; |
---|
3794 | info->value = usecs; |
---|
3795 | ticks = E1000_USECS_TO_TICKS(usecs); |
---|
3796 | |
---|
3797 | s = splimp(); |
---|
3798 | regval = E1000_READ_OFFSET(&adapter->hw, info->offset); |
---|
3799 | regval = (regval & ~0xffff) | (ticks & 0xffff); |
---|
3800 | /* Handle a few special cases. */ |
---|
3801 | switch (info->offset) { |
---|
3802 | case E1000_RDTR: |
---|
3803 | case E1000_82542_RDTR: |
---|
3804 | regval |= E1000_RDT_FPDB; |
---|
3805 | break; |
---|
3806 | case E1000_TIDV: |
---|
3807 | case E1000_82542_TIDV: |
---|
3808 | if (ticks == 0) { |
---|
3809 | adapter->txd_cmd &= ~E1000_TXD_CMD_IDE; |
---|
3810 | /* Don't write 0 into the TIDV register. */ |
---|
3811 | regval++; |
---|
3812 | } else |
---|
3813 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
---|
3814 | break; |
---|
3815 | } |
---|
3816 | E1000_WRITE_OFFSET(&adapter->hw, info->offset, regval); |
---|
3817 | splx(s); |
---|
3818 | return 0; |
---|
3819 | } |
---|
3820 | |
---|
3821 | static void |
---|
3822 | em_add_int_delay_sysctl(struct adapter *adapter, const char *name, |
---|
3823 | const char *description, struct em_int_delay_info *info, |
---|
3824 | int offset, int value) |
---|
3825 | { |
---|
3826 | info->adapter = adapter; |
---|
3827 | info->offset = offset; |
---|
3828 | info->value = value; |
---|
3829 | SYSCTL_ADD_PROC(device_get_sysctl_ctx(adapter->dev), |
---|
3830 | SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), |
---|
3831 | OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, |
---|
3832 | info, 0, em_sysctl_int_delay, "I", description); |
---|
3833 | } |
---|
3834 | #endif |
---|
3835 | |
---|
3836 | #ifdef __rtems__ |
---|
3837 | /* Initialize bare minimals so we can check the phy link status */ |
---|
3838 | int |
---|
3839 | em_hw_early_init(device_t dev) |
---|
3840 | { |
---|
3841 | struct adapter *adapter = device_get_softc(dev); |
---|
3842 | adapter->dev = dev; |
---|
3843 | adapter->osdep.dev = dev; |
---|
3844 | em_identify_hardware(adapter); |
---|
3845 | return em_allocate_pci_resources(adapter); |
---|
3846 | } |
---|
3847 | #endif |
---|