1 | /* |
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2 | * 3c595.c -- 3COM 3C595 Fast Etherlink III PCI driver for etherboot |
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3 | * |
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4 | * Copyright (C) 2000 Shusuke Nisiyama <shu@athena.qe.eng.hokudai.ac.jp> |
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5 | * All rights reserved. |
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6 | * Mar. 14, 2000 |
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7 | * |
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8 | * This software may be used, modified, copied, distributed, and sold, in |
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9 | * both source and binary form provided that the above copyright and these |
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10 | * terms are retained. Under no circumstances are the authors responsible for |
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11 | * the proper functioning of this software, nor do the authors assume any |
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12 | * responsibility for damages incurred with its use. |
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13 | * |
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14 | * This code is based on Martin Renters' etherboot-4.4.3 3c509.c and |
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15 | * Herb Peyerl's FreeBSD 3.4-RELEASE if_vx.c driver. |
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16 | * |
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17 | * Copyright (C) 1993-1994, David Greenman, Martin Renters. |
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18 | * Copyright (C) 1993-1995, Andres Vega Garcia. |
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19 | * Copyright (C) 1995, Serge Babkin. |
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20 | * |
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21 | * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca> |
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22 | * |
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23 | * timlegge 08-24-2003 Add Multicast Support |
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24 | */ |
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25 | |
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26 | FILE_LICENCE ( BSD2 ); |
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27 | |
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28 | /* #define EDEBUG */ |
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29 | |
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30 | #include "etherboot.h" |
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31 | #include "nic.h" |
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32 | #include <gpxe/pci.h> |
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33 | #include <gpxe/ethernet.h> |
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34 | #include "3c595.h" |
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35 | |
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36 | static struct nic_operations t595_operations; |
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37 | |
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38 | static unsigned short eth_nic_base; |
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39 | static unsigned short vx_connector, vx_connectors; |
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40 | |
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41 | static struct connector_entry { |
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42 | int bit; |
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43 | char *name; |
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44 | } conn_tab[VX_CONNECTORS] = { |
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45 | #define CONNECTOR_UTP 0 |
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46 | { 0x08, "utp"}, |
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47 | #define CONNECTOR_AUI 1 |
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48 | { 0x20, "aui"}, |
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49 | /* dummy */ |
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50 | { 0, "???"}, |
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51 | #define CONNECTOR_BNC 3 |
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52 | { 0x10, "bnc"}, |
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53 | #define CONNECTOR_TX 4 |
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54 | { 0x02, "tx"}, |
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55 | #define CONNECTOR_FX 5 |
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56 | { 0x04, "fx"}, |
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57 | #define CONNECTOR_MII 6 |
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58 | { 0x40, "mii"}, |
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59 | { 0, "???"} |
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60 | }; |
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61 | |
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62 | static void vxgetlink(void); |
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63 | static void vxsetlink(void); |
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64 | |
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65 | /************************************************************************** |
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66 | ETH_RESET - Reset adapter |
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67 | ***************************************************************************/ |
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68 | static void t595_reset(struct nic *nic) |
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69 | { |
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70 | int i; |
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71 | |
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72 | /*********************************************************** |
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73 | Reset 3Com 595 card |
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74 | *************************************************************/ |
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75 | |
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76 | /* stop card */ |
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77 | outw(RX_DISABLE, BASE + VX_COMMAND); |
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78 | outw(RX_DISCARD_TOP_PACK, BASE + VX_COMMAND); |
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79 | VX_BUSY_WAIT; |
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80 | outw(TX_DISABLE, BASE + VX_COMMAND); |
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81 | outw(STOP_TRANSCEIVER, BASE + VX_COMMAND); |
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82 | udelay(8000); |
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83 | outw(RX_RESET, BASE + VX_COMMAND); |
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84 | VX_BUSY_WAIT; |
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85 | outw(TX_RESET, BASE + VX_COMMAND); |
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86 | VX_BUSY_WAIT; |
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87 | outw(C_INTR_LATCH, BASE + VX_COMMAND); |
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88 | outw(SET_RD_0_MASK, BASE + VX_COMMAND); |
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89 | outw(SET_INTR_MASK, BASE + VX_COMMAND); |
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90 | outw(SET_RX_FILTER, BASE + VX_COMMAND); |
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91 | |
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92 | /* |
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93 | * initialize card |
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94 | */ |
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95 | VX_BUSY_WAIT; |
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96 | |
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97 | GO_WINDOW(0); |
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98 | |
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99 | /* Disable the card */ |
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100 | /* outw(0, BASE + VX_W0_CONFIG_CTRL); */ |
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101 | |
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102 | /* Configure IRQ to none */ |
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103 | /* outw(SET_IRQ(0), BASE + VX_W0_RESOURCE_CFG); */ |
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104 | |
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105 | /* Enable the card */ |
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106 | /* outw(ENABLE_DRQ_IRQ, BASE + VX_W0_CONFIG_CTRL); */ |
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107 | |
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108 | GO_WINDOW(2); |
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109 | |
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110 | /* Reload the ether_addr. */ |
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111 | for (i = 0; i < ETH_ALEN; i++) |
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112 | outb(nic->node_addr[i], BASE + VX_W2_ADDR_0 + i); |
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113 | |
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114 | outw(RX_RESET, BASE + VX_COMMAND); |
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115 | VX_BUSY_WAIT; |
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116 | outw(TX_RESET, BASE + VX_COMMAND); |
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117 | VX_BUSY_WAIT; |
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118 | |
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119 | /* Window 1 is operating window */ |
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120 | GO_WINDOW(1); |
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121 | for (i = 0; i < 31; i++) |
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122 | inb(BASE + VX_W1_TX_STATUS); |
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123 | |
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124 | outw(SET_RD_0_MASK | S_CARD_FAILURE | S_RX_COMPLETE | |
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125 | S_TX_COMPLETE | S_TX_AVAIL, BASE + VX_COMMAND); |
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126 | outw(SET_INTR_MASK | S_CARD_FAILURE | S_RX_COMPLETE | |
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127 | S_TX_COMPLETE | S_TX_AVAIL, BASE + VX_COMMAND); |
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128 | |
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129 | /* |
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130 | * Attempt to get rid of any stray interrupts that occured during |
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131 | * configuration. On the i386 this isn't possible because one may |
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132 | * already be queued. However, a single stray interrupt is |
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133 | * unimportant. |
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134 | */ |
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135 | |
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136 | outw(ACK_INTR | 0xff, BASE + VX_COMMAND); |
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137 | |
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138 | outw(SET_RX_FILTER | FIL_INDIVIDUAL | |
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139 | FIL_BRDCST|FIL_MULTICAST, BASE + VX_COMMAND); |
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140 | |
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141 | vxsetlink(); |
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142 | /*{ |
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143 | int i,j; |
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144 | i = CONNECTOR_TX; |
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145 | GO_WINDOW(3); |
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146 | j = inl(BASE + VX_W3_INTERNAL_CFG) & ~INTERNAL_CONNECTOR_MASK; |
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147 | outl(BASE + VX_W3_INTERNAL_CFG, j | (i <<INTERNAL_CONNECTOR_BITS)); |
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148 | GO_WINDOW(4); |
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149 | outw(LINKBEAT_ENABLE, BASE + VX_W4_MEDIA_TYPE); |
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150 | GO_WINDOW(1); |
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151 | }*/ |
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152 | |
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153 | /* start tranciever and receiver */ |
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154 | outw(RX_ENABLE, BASE + VX_COMMAND); |
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155 | outw(TX_ENABLE, BASE + VX_COMMAND); |
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156 | |
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157 | } |
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158 | |
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159 | /************************************************************************** |
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160 | ETH_TRANSMIT - Transmit a frame |
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161 | ***************************************************************************/ |
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162 | static char padmap[] = { |
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163 | 0, 3, 2, 1}; |
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164 | |
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165 | static void t595_transmit( |
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166 | struct nic *nic, |
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167 | const char *d, /* Destination */ |
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168 | unsigned int t, /* Type */ |
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169 | unsigned int s, /* size */ |
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170 | const char *p) /* Packet */ |
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171 | { |
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172 | register int len; |
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173 | int pad; |
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174 | int status; |
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175 | |
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176 | #ifdef EDEBUG |
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177 | printf("{l=%d,t=%hX}",s+ETH_HLEN,t); |
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178 | #endif |
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179 | |
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180 | /* swap bytes of type */ |
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181 | t= htons(t); |
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182 | |
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183 | len=s+ETH_HLEN; /* actual length of packet */ |
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184 | pad = padmap[len & 3]; |
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185 | |
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186 | /* |
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187 | * The 3c595 automatically pads short packets to minimum ethernet length, |
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188 | * but we drop packets that are too large. Perhaps we should truncate |
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189 | * them instead? |
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190 | */ |
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191 | if (len + pad > ETH_FRAME_LEN) { |
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192 | return; |
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193 | } |
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194 | |
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195 | /* drop acknowledgements */ |
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196 | while(( status=inb(BASE + VX_W1_TX_STATUS) )& TXS_COMPLETE ) { |
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197 | if(status & (TXS_UNDERRUN|TXS_MAX_COLLISION|TXS_STATUS_OVERFLOW)) { |
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198 | outw(TX_RESET, BASE + VX_COMMAND); |
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199 | outw(TX_ENABLE, BASE + VX_COMMAND); |
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200 | } |
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201 | |
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202 | outb(0x0, BASE + VX_W1_TX_STATUS); |
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203 | } |
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204 | |
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205 | while (inw(BASE + VX_W1_FREE_TX) < len + pad + 4) { |
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206 | /* no room in FIFO */ |
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207 | } |
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208 | |
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209 | outw(len, BASE + VX_W1_TX_PIO_WR_1); |
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210 | outw(0x0, BASE + VX_W1_TX_PIO_WR_1); /* Second dword meaningless */ |
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211 | |
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212 | /* write packet */ |
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213 | outsw(BASE + VX_W1_TX_PIO_WR_1, d, ETH_ALEN/2); |
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214 | outsw(BASE + VX_W1_TX_PIO_WR_1, nic->node_addr, ETH_ALEN/2); |
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215 | outw(t, BASE + VX_W1_TX_PIO_WR_1); |
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216 | outsw(BASE + VX_W1_TX_PIO_WR_1, p, s / 2); |
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217 | if (s & 1) |
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218 | outb(*(p+s - 1), BASE + VX_W1_TX_PIO_WR_1); |
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219 | |
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220 | while (pad--) |
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221 | outb(0, BASE + VX_W1_TX_PIO_WR_1); /* Padding */ |
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222 | |
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223 | /* wait for Tx complete */ |
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224 | while((inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS) != 0) |
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225 | ; |
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226 | } |
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227 | |
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228 | /************************************************************************** |
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229 | ETH_POLL - Wait for a frame |
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230 | ***************************************************************************/ |
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231 | static int t595_poll(struct nic *nic, int retrieve) |
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232 | { |
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233 | /* common variables */ |
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234 | /* variables for 3C595 */ |
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235 | short status, cst; |
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236 | register short rx_fifo; |
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237 | |
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238 | cst=inw(BASE + VX_STATUS); |
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239 | |
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240 | #ifdef EDEBUG |
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241 | if(cst & 0x1FFF) |
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242 | printf("-%hX-",cst); |
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243 | #endif |
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244 | |
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245 | if( (cst & S_RX_COMPLETE)==0 ) { |
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246 | /* acknowledge everything */ |
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247 | outw(ACK_INTR | cst, BASE + VX_COMMAND); |
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248 | outw(C_INTR_LATCH, BASE + VX_COMMAND); |
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249 | |
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250 | return 0; |
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251 | } |
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252 | |
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253 | status = inw(BASE + VX_W1_RX_STATUS); |
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254 | #ifdef EDEBUG |
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255 | printf("*%hX*",status); |
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256 | #endif |
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257 | |
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258 | if (status & ERR_RX) { |
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259 | outw(RX_DISCARD_TOP_PACK, BASE + VX_COMMAND); |
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260 | return 0; |
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261 | } |
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262 | |
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263 | rx_fifo = status & RX_BYTES_MASK; |
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264 | if (rx_fifo==0) |
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265 | return 0; |
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266 | |
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267 | if ( ! retrieve ) return 1; |
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268 | |
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269 | /* read packet */ |
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270 | #ifdef EDEBUG |
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271 | printf("[l=%d",rx_fifo); |
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272 | #endif |
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273 | insw(BASE + VX_W1_RX_PIO_RD_1, nic->packet, rx_fifo / 2); |
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274 | if(rx_fifo & 1) |
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275 | nic->packet[rx_fifo-1]=inb(BASE + VX_W1_RX_PIO_RD_1); |
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276 | nic->packetlen=rx_fifo; |
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277 | |
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278 | while(1) { |
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279 | status = inw(BASE + VX_W1_RX_STATUS); |
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280 | #ifdef EDEBUG |
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281 | printf("*%hX*",status); |
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282 | #endif |
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283 | rx_fifo = status & RX_BYTES_MASK; |
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284 | |
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285 | if(rx_fifo>0) { |
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286 | insw(BASE + VX_W1_RX_PIO_RD_1, nic->packet+nic->packetlen, rx_fifo / 2); |
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287 | if(rx_fifo & 1) |
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288 | nic->packet[nic->packetlen+rx_fifo-1]=inb(BASE + VX_W1_RX_PIO_RD_1); |
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289 | nic->packetlen+=rx_fifo; |
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290 | #ifdef EDEBUG |
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291 | printf("+%d",rx_fifo); |
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292 | #endif |
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293 | } |
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294 | if(( status & RX_INCOMPLETE )==0) { |
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295 | #ifdef EDEBUG |
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296 | printf("=%d",nic->packetlen); |
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297 | #endif |
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298 | break; |
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299 | } |
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300 | udelay(1000); |
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301 | } |
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302 | |
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303 | /* acknowledge reception of packet */ |
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304 | outw(RX_DISCARD_TOP_PACK, BASE + VX_COMMAND); |
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305 | while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS); |
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306 | #ifdef EDEBUG |
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307 | { |
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308 | unsigned short type = 0; /* used by EDEBUG */ |
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309 | type = (nic->packet[12]<<8) | nic->packet[13]; |
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310 | if(nic->packet[0]+nic->packet[1]+nic->packet[2]+nic->packet[3]+nic->packet[4]+ |
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311 | nic->packet[5] == 0xFF*ETH_ALEN) |
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312 | printf(",t=%hX,b]",type); |
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313 | else |
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314 | printf(",t=%hX]",type); |
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315 | } |
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316 | #endif |
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317 | return 1; |
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318 | } |
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319 | |
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320 | |
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321 | /************************************************************************* |
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322 | 3Com 595 - specific routines |
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323 | **************************************************************************/ |
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324 | |
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325 | static int |
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326 | eeprom_rdy() |
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327 | { |
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328 | int i; |
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329 | |
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330 | for (i = 0; is_eeprom_busy(BASE) && i < MAX_EEPROMBUSY; i++) |
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331 | udelay(1000); |
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332 | if (i >= MAX_EEPROMBUSY) { |
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333 | /* printf("3c595: eeprom failed to come ready.\n"); */ |
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334 | printf("3c595: eeprom is busy.\n"); /* memory in EPROM is tight */ |
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335 | return (0); |
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336 | } |
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337 | return (1); |
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338 | } |
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339 | |
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340 | /* |
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341 | * get_e: gets a 16 bits word from the EEPROM. we must have set the window |
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342 | * before |
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343 | */ |
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344 | static int |
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345 | get_e(offset) |
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346 | int offset; |
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347 | { |
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348 | if (!eeprom_rdy()) |
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349 | return (0xffff); |
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350 | outw(EEPROM_CMD_RD | offset, BASE + VX_W0_EEPROM_COMMAND); |
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351 | if (!eeprom_rdy()) |
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352 | return (0xffff); |
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353 | return (inw(BASE + VX_W0_EEPROM_DATA)); |
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354 | } |
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355 | |
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356 | static void |
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357 | vxgetlink(void) |
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358 | { |
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359 | int n, k; |
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360 | |
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361 | GO_WINDOW(3); |
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362 | vx_connectors = inw(BASE + VX_W3_RESET_OPT) & 0x7f; |
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363 | for (n = 0, k = 0; k < VX_CONNECTORS; k++) { |
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364 | if (vx_connectors & conn_tab[k].bit) { |
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365 | if (n > 0) { |
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366 | printf("/"); |
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367 | } |
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368 | printf("%s", conn_tab[k].name ); |
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369 | n++; |
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370 | } |
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371 | } |
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372 | if (vx_connectors == 0) { |
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373 | printf("no connectors!"); |
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374 | return; |
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375 | } |
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376 | GO_WINDOW(3); |
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377 | vx_connector = (inl(BASE + VX_W3_INTERNAL_CFG) |
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378 | & INTERNAL_CONNECTOR_MASK) |
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379 | >> INTERNAL_CONNECTOR_BITS; |
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380 | if (vx_connector & 0x10) { |
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381 | vx_connector &= 0x0f; |
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382 | printf("[*%s*]", conn_tab[vx_connector].name); |
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383 | printf(": disable 'auto select' with DOS util!"); |
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384 | } else { |
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385 | printf("[*%s*]", conn_tab[vx_connector].name); |
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386 | } |
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387 | } |
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388 | |
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389 | static void |
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390 | vxsetlink(void) |
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391 | { |
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392 | int i, j; |
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393 | char *reason, *warning; |
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394 | static char prev_conn = -1; |
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395 | |
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396 | if (prev_conn == -1) { |
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397 | prev_conn = vx_connector; |
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398 | } |
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399 | |
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400 | i = vx_connector; /* default in EEPROM */ |
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401 | reason = "default"; |
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402 | warning = 0; |
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403 | |
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404 | if ((vx_connectors & conn_tab[vx_connector].bit) == 0) { |
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405 | warning = "strange connector type in EEPROM."; |
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406 | reason = "forced"; |
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407 | i = CONNECTOR_UTP; |
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408 | } |
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409 | |
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410 | if (warning != 0) { |
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411 | printf("warning: %s\n", warning); |
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412 | } |
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413 | printf("selected %s. (%s)\n", conn_tab[i].name, reason); |
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414 | |
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415 | /* Set the selected connector. */ |
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416 | GO_WINDOW(3); |
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417 | j = inl(BASE + VX_W3_INTERNAL_CFG) & ~INTERNAL_CONNECTOR_MASK; |
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418 | outl(j | (i <<INTERNAL_CONNECTOR_BITS), BASE + VX_W3_INTERNAL_CFG); |
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419 | |
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420 | /* First, disable all. */ |
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421 | outw(STOP_TRANSCEIVER, BASE + VX_COMMAND); |
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422 | udelay(8000); |
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423 | GO_WINDOW(4); |
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424 | outw(0, BASE + VX_W4_MEDIA_TYPE); |
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425 | |
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426 | /* Second, enable the selected one. */ |
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427 | switch(i) { |
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428 | case CONNECTOR_UTP: |
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429 | GO_WINDOW(4); |
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430 | outw(ENABLE_UTP, BASE + VX_W4_MEDIA_TYPE); |
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431 | break; |
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432 | case CONNECTOR_BNC: |
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433 | outw(START_TRANSCEIVER,BASE + VX_COMMAND); |
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434 | udelay(8000); |
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435 | break; |
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436 | case CONNECTOR_TX: |
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437 | case CONNECTOR_FX: |
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438 | GO_WINDOW(4); |
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439 | outw(LINKBEAT_ENABLE, BASE + VX_W4_MEDIA_TYPE); |
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440 | break; |
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441 | default: /* AUI and MII fall here */ |
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442 | break; |
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443 | } |
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444 | GO_WINDOW(1); |
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445 | } |
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446 | |
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447 | static void t595_disable ( struct nic *nic ) { |
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448 | |
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449 | t595_reset(nic); |
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450 | |
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451 | outw(STOP_TRANSCEIVER, BASE + VX_COMMAND); |
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452 | udelay(8000); |
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453 | GO_WINDOW(4); |
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454 | outw(0, BASE + VX_W4_MEDIA_TYPE); |
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455 | GO_WINDOW(1); |
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456 | } |
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457 | |
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458 | static void t595_irq(struct nic *nic __unused, irq_action_t action __unused) |
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459 | { |
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460 | switch ( action ) { |
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461 | case DISABLE : |
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462 | break; |
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463 | case ENABLE : |
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464 | break; |
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465 | case FORCE : |
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466 | break; |
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467 | } |
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468 | } |
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469 | |
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470 | /************************************************************************** |
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471 | ETH_PROBE - Look for an adapter |
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472 | ***************************************************************************/ |
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473 | static int t595_probe ( struct nic *nic, struct pci_device *pci ) { |
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474 | |
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475 | int i; |
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476 | unsigned short *p; |
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477 | |
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478 | if (pci->ioaddr == 0) |
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479 | return 0; |
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480 | eth_nic_base = pci->ioaddr; |
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481 | |
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482 | nic->irqno = 0; |
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483 | nic->ioaddr = pci->ioaddr; |
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484 | |
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485 | GO_WINDOW(0); |
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486 | outw(GLOBAL_RESET, BASE + VX_COMMAND); |
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487 | VX_BUSY_WAIT; |
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488 | |
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489 | vxgetlink(); |
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490 | |
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491 | /* |
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492 | printf("\nEEPROM:"); |
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493 | for (i = 0; i < (EEPROMSIZE/2); i++) { |
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494 | printf("%hX:", get_e(i)); |
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495 | } |
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496 | printf("\n"); |
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497 | */ |
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498 | /* |
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499 | * Read the station address from the eeprom |
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500 | */ |
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501 | p = (unsigned short *) nic->node_addr; |
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502 | for (i = 0; i < 3; i++) { |
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503 | GO_WINDOW(0); |
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504 | p[i] = htons(get_e(EEPROM_OEM_ADDR_0 + i)); |
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505 | GO_WINDOW(2); |
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506 | outw(ntohs(p[i]), BASE + VX_W2_ADDR_0 + (i * 2)); |
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507 | } |
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508 | |
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509 | DBG ( "Ethernet address: %s\n", eth_ntoa (nic->node_addr) ); |
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510 | |
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511 | t595_reset(nic); |
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512 | nic->nic_op = &t595_operations; |
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513 | return 1; |
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514 | |
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515 | } |
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516 | |
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517 | static struct nic_operations t595_operations = { |
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518 | .connect = dummy_connect, |
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519 | .poll = t595_poll, |
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520 | .transmit = t595_transmit, |
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521 | .irq = t595_irq, |
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522 | |
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523 | }; |
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524 | |
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525 | static struct pci_device_id t595_nics[] = { |
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526 | PCI_ROM(0x10b7, 0x5900, "3c590", "3Com590", 0), /* Vortex 10Mbps */ |
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527 | PCI_ROM(0x10b7, 0x5950, "3c595", "3Com595", 0), /* Vortex 100baseTx */ |
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528 | PCI_ROM(0x10b7, 0x5951, "3c595-1", "3Com595", 0), /* Vortex 100baseT4 */ |
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529 | PCI_ROM(0x10b7, 0x5952, "3c595-2", "3Com595", 0), /* Vortex 100base-MII */ |
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530 | PCI_ROM(0x10b7, 0x9000, "3c900-tpo", "3Com900-TPO", 0), /* 10 Base TPO */ |
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531 | PCI_ROM(0x10b7, 0x9001, "3c900-t4", "3Com900-Combo", 0), /* 10/100 T4 */ |
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532 | PCI_ROM(0x10b7, 0x9004, "3c900b-tpo", "3Com900B-TPO", 0), /* 10 Base TPO */ |
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533 | PCI_ROM(0x10b7, 0x9005, "3c900b-combo", "3Com900B-Combo", 0), /* 10 Base Combo */ |
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534 | PCI_ROM(0x10b7, 0x9006, "3c900b-tpb2", "3Com900B-2/T", 0), /* 10 Base TP and Base2 */ |
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535 | PCI_ROM(0x10b7, 0x900a, "3c900b-fl", "3Com900B-FL", 0), /* 10 Base F */ |
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536 | PCI_ROM(0x10b7, 0x9800, "3c980-cyclone-1", "3Com980-Cyclone", 0), /* Cyclone */ |
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537 | PCI_ROM(0x10b7, 0x9805, "3c9805-1", "3Com9805", 0), /* Dual Port Server Cyclone */ |
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538 | PCI_ROM(0x10b7, 0x7646, "3csoho100-tx-1", "3CSOHO100-TX", 0), /* Hurricane */ |
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539 | PCI_ROM(0x10b7, 0x4500, "3c450-1", "3Com450 HomePNA Tornado", 0), |
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540 | }; |
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541 | |
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542 | PCI_DRIVER ( t595_driver, t595_nics, PCI_NO_CLASS ); |
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543 | |
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544 | DRIVER ( "3C595", nic_driver, pci_driver, t595_driver, |
---|
545 | t595_probe, t595_disable ); |
---|
546 | |
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547 | /* |
---|
548 | * Local variables: |
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549 | * c-basic-offset: 8 |
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550 | * c-indent-level: 8 |
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551 | * tab-width: 8 |
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552 | * End: |
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553 | */ |
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