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Rev | Author | Line No. | Line |
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1 | ha | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; ETHERNET.INC ;; |
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4 | ;; ;; |
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5 | ;; Ethernet network layer for Menuet OS ;; |
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6 | ;; ;; |
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7 | ;; Version 0.4 22 September 2003 ;; |
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8 | ;; ;; |
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9 | ;; This file contains the following: ;; |
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10 | ;; PCI bus scanning for valid devices ;; |
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11 | ;; Table of supported ethernet drivers ;; |
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12 | ;; Code to identify and activate a supported driver ;; |
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13 | ;; ARP handler ;; |
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14 | ;; Driver interface to the IP layer ;; |
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15 | ;; Gateway support ;; |
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16 | ;; ;; |
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17 | ;; Individual driver files are included here ;; |
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18 | ;; ;; |
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19 | ;; The PCI bus scanning code was ported from the etherboot ;; |
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20 | ;; 5.0.6 project. The copyright statement for that code is ;; |
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21 | ;; ;; |
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22 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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23 | ;; Version 2, June 1991 ;; |
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24 | ;; ;; |
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25 | ;; remaining parts Copyright 2002 Mike Hibbett ;; |
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26 | ;; mikeh@oceanfree.net ;; |
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27 | ;; ;; |
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28 | ;; See file COPYING for details ;; |
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29 | ;; ;; |
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30 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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31 | |||
32 | ;******************************************************************** |
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33 | ; Interface |
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34 | ; ethernet_driver called by stack_handler in stack.inc |
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35 | ; eth_probe called by app_stack_handler in stack.inc |
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36 | ; |
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37 | ;******************************************************************** |
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38 | |||
302 | hidnplayr | 39 | ETHER_IP equ 0x0008 ; Reversed from 0800 for intel |
40 | ETHER_ARP equ 0x0608 ; Reversed from 0806 for intel |
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41 | ETHER_RARP equ 0x3580 |
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261 | hidnplayr | 42 | |
43 | struc ETH_FRAME |
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302 | hidnplayr | 44 | { .DstMAC dp ? ;destination MAC-address [6 bytes] |
45 | .SrcMAC dp ? ;source MAC-address [6 bytes] |
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46 | .Type dw ? ;type of the upper-layer protocol [2 bytes] |
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47 | .Data db ? ;data [46-1500 bytes] |
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261 | hidnplayr | 48 | } |
49 | |||
50 | virtual at Ether_buffer |
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51 | ETH_FRAME ETH_FRAME |
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52 | end virtual |
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53 | |||
54 | |||
1 | ha | 55 | ; Some useful information on data structures |
56 | |||
57 | ; Ethernet Packet - ARP Request example |
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58 | ; |
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59 | ; 0 1 2 3 |
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60 | ; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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61 | ; |
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62 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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63 | ; | Dest H/W Address | |
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64 | ; | ( 14 byte header ) | |
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65 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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66 | ; | | Source H/W Address | |
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67 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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68 | ; | | |
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69 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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70 | ; | Protocol - ARP 08 06 | |
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71 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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72 | |||
73 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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74 | ; | H/W Type 00 01 | Protocol Type 08 00 | |
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75 | ; | ( ARP Request packet ) | |
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76 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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77 | ; | HLen 0x06 | PLen 0x04 | OpCode 00 01 | |
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78 | ; | ( 0001 for request, 0002 for reply ) | |
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79 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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80 | ; | Source Hardware Address ( MAC Address ) | |
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81 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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82 | ; | | Source IP Address | |
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83 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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84 | ; | | Destination Hardware Address | |
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85 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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86 | ; | | |
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87 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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88 | ; | Destination IP Address | |
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89 | ; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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90 | |||
91 | ; Include individual drivers source files at this point. |
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92 | ; If you create a new driver, include it below. |
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93 | |||
261 | hidnplayr | 94 | include "drivers/rtl8029.inc" |
95 | include "drivers/i8255x.inc" |
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96 | include "drivers/rtl8139.inc" |
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97 | include "drivers/3c59x.inc" |
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98 | include "drivers/sis900.inc" |
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99 | include "drivers/pcnet32.inc" |
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323 | hidnplayr | 100 | ;include "drivers/mtd80x.inc" |
373 | mikedld | 101 | include "drivers/rtl8169.inc" |
1 | ha | 102 | |
103 | ; PCICards |
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104 | ; ======== |
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105 | ; PCI vendor and hardware types for hardware supported by the above drivers |
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106 | ; If you add a driver, ensure you update this datastructure, otherwise the |
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107 | ; card will not be probed. |
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108 | ; Each driver is defined by 4 double words. These are |
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109 | ; PCIVendorDevice probeFunction ResetFunction PollFunction transmitFunction |
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110 | ; The last entry must be kept at all zeros, to indicate the end of the list |
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111 | ; As a PCI driver may support more than one hardware implementation, there may |
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112 | ; be several lines which refer to the same functions. |
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113 | ; The first driver found on the PCI bus will be the one used. |
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114 | |||
302 | hidnplayr | 115 | PCICARDS_ENTRY_SIZE equ 24 ; Size of each PCICARDS entry |
1 | ha | 116 | |
117 | iglobal |
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118 | PCICards: |
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302 | hidnplayr | 119 | dd 0x12098086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0 |
120 | dd 0x10298086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0 |
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121 | dd 0x12298086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0 |
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122 | dd 0x10308086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0 |
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123 | dd 0x24498086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0 |
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124 | dd 0x802910ec, rtl8029_probe, rtl8029_reset, rtl8029_poll, rtl8029_transmit, 0 |
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125 | dd 0x12111113, rtl8029_probe, rtl8029_reset, rtl8029_poll, rtl8029_transmit, 0 |
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126 | |||
127 | dd 0x813910ec, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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128 | dd 0x813810ec, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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129 | dd 0x12111113, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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130 | dd 0x13601500, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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131 | dd 0x13604033, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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132 | dd 0x13001186, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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133 | dd 0x13401186, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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134 | dd 0xab0613d1, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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135 | dd 0xa1171259, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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136 | dd 0xa11e1259, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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137 | dd 0xab0614ea, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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138 | dd 0xab0714ea, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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139 | dd 0x123411db, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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140 | dd 0x91301432, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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141 | dd 0x101202ac, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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142 | dd 0x0106018a, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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143 | dd 0x1211126c, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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144 | dd 0x81391743, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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145 | dd 0x8139021b, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable |
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146 | |||
373 | mikedld | 147 | dd 0x816810ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0 |
148 | dd 0x816910ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0 |
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149 | dd 0x011616ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0 |
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150 | dd 0x43001186, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0 |
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151 | |||
302 | hidnplayr | 152 | dd 0x590010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
153 | dd 0x592010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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154 | dd 0x597010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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155 | dd 0x595010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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156 | dd 0x595110b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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157 | dd 0x595210b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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158 | dd 0x900010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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159 | dd 0x900110b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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160 | dd 0x900410b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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161 | dd 0x900510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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162 | dd 0x900610b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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163 | dd 0x900A10b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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164 | dd 0x905010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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165 | dd 0x905110b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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166 | dd 0x905510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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167 | dd 0x905810b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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168 | dd 0x905A10b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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169 | dd 0x920010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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170 | dd 0x980010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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171 | dd 0x980510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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172 | dd 0x764610b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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173 | dd 0x505510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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174 | dd 0x605510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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175 | dd 0x605610b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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176 | dd 0x5b5710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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177 | dd 0x505710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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178 | dd 0x515710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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179 | dd 0x525710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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180 | dd 0x656010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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181 | dd 0x656210b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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182 | dd 0x656410b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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183 | dd 0x450010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0 |
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184 | |||
185 | dd 0x09001039, SIS900_probe, SIS900_reset, SIS900_poll, SIS900_transmit, 0 |
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186 | |||
187 | dd 0x20001022, pcnet32_probe, pcnet32_reset, pcnet32_poll, pcnet32_xmit, 0 |
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188 | dd 0x26251022, pcnet32_probe, pcnet32_reset, pcnet32_poll, pcnet32_xmit, 0 |
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189 | dd 0x20011022, pcnet32_probe, pcnet32_reset, pcnet32_poll, pcnet32_xmit, 0 |
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323 | hidnplayr | 190 | |
191 | ;dd 0x08031516, mtd80x_probe, mtd80x_reset, mtd80x_poll, mtd80x_transmit, mtd80x_cable |
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192 | |||
193 | ; following cards are untested |
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302 | hidnplayr | 194 | dd 0x70161039, SIS900_probe, SIS900_reset, SIS900_poll, SIS900_transmit, 0 |
323 | hidnplayr | 195 | ;dd 0x08001516, mtd80x_probe, mtd80x_reset, mtd80x_poll, mtd80x_transmit, mtd80x_cable |
196 | ;dd 0x08911516, mtd80x_probe, mtd80x_reset, mtd80x_poll, mtd80x_transmit, mtd80x_cable |
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197 | |||
302 | hidnplayr | 198 | rb PCICARDS_ENTRY_SIZE ; end of list marker, do not remove |
1 | ha | 199 | endg |
200 | |||
201 | uglobal |
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261 | hidnplayr | 202 | ;Net-stack's interface's settings |
302 | hidnplayr | 203 | node_addr: db 0,0,0,0,0,0 |
204 | gateway_ip: dd 0 |
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205 | dns_ip: dd 0 |
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261 | hidnplayr | 206 | |
1 | ha | 207 | eth_rx_data_len: dw 0 |
302 | hidnplayr | 208 | eth_status: dd 0 |
209 | io_addr: dd 0 |
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210 | hdrtype: db 0 |
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1 | ha | 211 | vendor_device: dd 0 |
302 | hidnplayr | 212 | pci_data: dd 0 |
213 | pci_dev: dd 0 |
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214 | pci_bus: dd 0 |
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1 | ha | 215 | |
216 | ; These will hold pointers to the selected driver functions |
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302 | hidnplayr | 217 | drvr_probe: dd 0 |
218 | drvr_reset: dd 0 |
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219 | drvr_poll: dd 0 |
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1 | ha | 220 | drvr_transmit: dd 0 |
302 | hidnplayr | 221 | drvr_cable: dd 0 |
1 | ha | 222 | |
223 | endg |
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224 | |||
225 | iglobal |
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226 | broadcast_add: db 0xff,0xff,0xff,0xff,0xff,0xff |
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302 | hidnplayr | 227 | subnet_mask: dd 0x00ffffff ; 255.255.255.0 |
1 | ha | 228 | endg |
229 | |||
261 | hidnplayr | 230 | include "arp.inc" ;arp-protocol functions |
231 | include "pci.inc" ;PCI bus access functions |
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1 | ha | 232 | |
233 | |||
234 | ;*************************************************************************** |
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235 | ; Function |
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236 | ; eth_tx |
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237 | ; |
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238 | ; Description |
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239 | ; Looks at the NET1OUT_QUEUE for data to send. |
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240 | ; Stores that destination IP in a location used by the tx routine |
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241 | ; Looks up the MAC address in the ARP table; stores that where |
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242 | ; the tx routine can get it |
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243 | ; Get the length of the data. Store that where the tx routine wants it |
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244 | ; Call tx |
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245 | ; Places buffer on empty queue when the tx routine finished |
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246 | ; |
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247 | ;*************************************************************************** |
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261 | hidnplayr | 248 | proc eth_tx stdcall uses ebx esi edi |
249 | local MACAddress dp ? ;allocate 6 bytes in the stack |
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250 | |||
1 | ha | 251 | ; Look for a buffer to tx |
252 | mov eax, NET1OUT_QUEUE |
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253 | call dequeue |
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254 | cmp ax, NO_BUFFER |
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302 | hidnplayr | 255 | je .exit ; Exit if no buffer available |
1 | ha | 256 | |
261 | hidnplayr | 257 | push eax ;save buffer number |
1 | ha | 258 | |
259 | ; convert buffer pointer eax to the absolute address |
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261 | hidnplayr | 260 | imul eax, IPBUFFSIZE |
1 | ha | 261 | add eax, IPbuffs |
262 | |||
263 | ; Extract the destination IP |
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264 | ; find the destination IP in the ARP table, get MAC |
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265 | ; store this MAC in 'MACAddress' |
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302 | hidnplayr | 266 | mov ebx, eax ; Save buffer address |
267 | mov edx, [ebx + 16] ; get destination address |
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1 | ha | 268 | |
269 | ; If the destination address is 255.255.255.255, |
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270 | ; set the MACAddress to all ones ( broadcast ) |
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261 | hidnplayr | 271 | cld |
272 | mov esi, broadcast_add |
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273 | lea edi, [MACAddress] |
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274 | movsd |
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275 | movsw |
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1 | ha | 276 | cmp edx, 0xffffffff |
302 | hidnplayr | 277 | je .send ; If it is broadcast, just send |
1 | ha | 278 | |
302 | hidnplayr | 279 | lea eax, [MACAddress] ;cause this is local variable |
261 | hidnplayr | 280 | stdcall arp_table_manager, ARP_TABLE_IP_TO_MAC, edx, eax ;opcode,IP,MAC_ptr - Get the MAC address. |
1 | ha | 281 | |
282 | cmp eax, ARP_VALID_MAPPING |
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302 | hidnplayr | 283 | je .send |
1 | ha | 284 | |
261 | hidnplayr | 285 | ; No valid entry. Has the request been sent, but timed out? |
1 | ha | 286 | cmp eax, ARP_RESPONSE_TIMEOUT |
302 | hidnplayr | 287 | je .freebuf |
1 | ha | 288 | |
302 | hidnplayr | 289 | .wait_response: ;we wait arp-response |
290 | ; Re-queue the packet, and exit |
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1 | ha | 291 | pop ebx |
292 | mov eax, NET1OUT_QUEUE |
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302 | hidnplayr | 293 | call queue ; Get the buffer back |
261 | hidnplayr | 294 | jmp .exit |
1 | ha | 295 | |
261 | hidnplayr | 296 | .send: ;if ARP_VALID_MAPPING then send the packet |
302 | hidnplayr | 297 | lea edi, [MACAddress] ; Pointer to 48 bit destination address |
298 | movzx ecx, word[ebx+2] ; Size of IP packet to send |
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299 | xchg ch, cl ; because mirror byte-order |
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300 | mov esi, ebx ; Pointer to packet data |
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301 | mov bx, ETHER_IP ; Type of packet |
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261 | hidnplayr | 302 | call dword [drvr_transmit] ; Call the drivers transmit function |
1 | ha | 303 | |
304 | ; OK, we have sent a packet, so increment the count |
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305 | inc dword [ip_tx_count] |
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306 | |||
307 | ; And finally, return the buffer to the free queue |
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261 | hidnplayr | 308 | .freebuf: |
1 | ha | 309 | pop eax |
310 | call freeBuff |
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311 | |||
261 | hidnplayr | 312 | .exit: |
1 | ha | 313 | ret |
261 | hidnplayr | 314 | endp |
1 | ha | 315 | |
316 | ;*************************************************************************** |
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317 | ; Function |
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318 | ; ether_IP_handler |
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319 | ; |
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320 | ; Description |
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321 | ; Called when an IP ethernet packet is received on the ethernet |
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322 | ; Header + Data is in Ether_buffer[] |
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323 | ; We just need to get a buffer from the 'free' queue, and |
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324 | ; store the packet in it, then insert the packet number into the |
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325 | ; IPRX queue. |
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326 | ; If no queue entry is available, the packet is silently discarded |
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327 | ; All registers may be destroyed |
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328 | ; |
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329 | ;*************************************************************************** |
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330 | ether_IP_handler: |
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331 | mov eax, EMPTY_QUEUE |
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332 | call dequeue |
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333 | cmp ax, NO_BUFFER |
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302 | hidnplayr | 334 | je eiph00x |
1 | ha | 335 | |
336 | ; convert buffer pointer eax to the absolute address |
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337 | push eax |
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338 | mov ecx, IPBUFFSIZE |
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339 | mul ecx |
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340 | add eax, IPbuffs |
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341 | |||
342 | mov edi, eax |
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343 | |||
344 | ; get a pointer to the start of the DATA |
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261 | hidnplayr | 345 | mov esi, ETH_FRAME.Data |
1 | ha | 346 | |
347 | ; Now store it all away |
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348 | mov ecx, IPBUFFSIZE / 4 ; Copy all of the available |
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302 | hidnplayr | 349 | ; data across - worse case |
1 | ha | 350 | cld |
351 | rep movsd |
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352 | |||
353 | ; And finally, place the buffer in the IPRX queue |
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354 | pop ebx |
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355 | mov eax, IPIN_QUEUE |
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356 | call queue |
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357 | |||
358 | eiph00x: |
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359 | ret |
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360 | |||
361 | ;*************************************************************************** |
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362 | ; Function |
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261 | hidnplayr | 363 | ; eth_probe |
1 | ha | 364 | ; Description |
261 | hidnplayr | 365 | ; Searches for an ethernet card. If found, the card is enabled and |
366 | ; the ethernet -> IP link established |
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1 | ha | 367 | ; |
261 | hidnplayr | 368 | ; This function scans the PCI bus looking for a supported device. |
369 | ; ISA bus is currently not supported. |
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1 | ha | 370 | ; |
261 | hidnplayr | 371 | ; eax is 0 if no hardware found |
1 | ha | 372 | ;*************************************************************************** |
261 | hidnplayr | 373 | eth_probe: |
374 | ; Find a card on the PCI bus, and get it's address |
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302 | hidnplayr | 375 | call scan_bus ; Find the ethernet cards PIC address |
1 | ha | 376 | xor eax, eax |
261 | hidnplayr | 377 | cmp [io_addr], eax |
302 | hidnplayr | 378 | je ep_00x ; Return 0 in eax if no cards found |
1 | ha | 379 | |
302 | hidnplayr | 380 | call dword [drvr_probe] ; Call the drivers probe function |
1 | ha | 381 | |
302 | hidnplayr | 382 | mov eax, [io_addr] ; return a non zero value |
1 | ha | 383 | |
261 | hidnplayr | 384 | ep_00x: |
1 | ha | 385 | ret |
386 | |||
387 | ;*************************************************************************** |
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388 | ; Function |
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261 | hidnplayr | 389 | ; ethernet_driver |
1 | ha | 390 | ; |
391 | ; Description |
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261 | hidnplayr | 392 | ; The ethernet RX and TX handler |
393 | ; This is a kernel function, called by stack_handler |
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1 | ha | 394 | ; |
395 | ;*************************************************************************** |
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261 | hidnplayr | 396 | ethernet_driver: |
397 | ; Do nothing if the driver is inactive |
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398 | cmp [ethernet_active], byte 0 |
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302 | hidnplayr | 399 | je eth_exit |
1 | ha | 400 | |
261 | hidnplayr | 401 | call eth_rx |
402 | call eth_tx |
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1 | ha | 403 | |
261 | hidnplayr | 404 | eth_exit: |
1 | ha | 405 | ret |
406 | |||
407 | ;*************************************************************************** |
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408 | ; Function |
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261 | hidnplayr | 409 | ; eth_rx |
1 | ha | 410 | ; |
411 | ; Description |
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261 | hidnplayr | 412 | ; Polls the ethernet card for received data. Extracts if present |
413 | ; Depending on the Protocol within the packet: |
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414 | ; ARP : Pass to ARP_handler. This may result in an ARP reply |
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415 | ; being tx'ed |
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416 | ; IP : Store in an IP buffer |
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1 | ha | 417 | ; |
418 | ;*************************************************************************** |
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261 | hidnplayr | 419 | eth_rx: |
420 | xor ax, ax |
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421 | mov [eth_rx_data_len], ax |
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302 | hidnplayr | 422 | call dword [drvr_poll] ; Call the drivers poll function |
1 | ha | 423 | |
261 | hidnplayr | 424 | mov ax, [eth_rx_data_len] |
425 | cmp ax, 0 |
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302 | hidnplayr | 426 | je .exit |
1 | ha | 427 | |
428 | |||
261 | hidnplayr | 429 | ; Check the protocol. Call appropriate handler |
1 | ha | 430 | |
261 | hidnplayr | 431 | mov ax, [ETH_FRAME.Type] ; The address of the protocol word |
1 | ha | 432 | |
261 | hidnplayr | 433 | cmp ax, ETHER_IP |
302 | hidnplayr | 434 | je .is_ip ; It's IP |
1 | ha | 435 | |
261 | hidnplayr | 436 | cmp ax, ETHER_ARP |
302 | hidnplayr | 437 | je .is_arp ; It is ARP |
1 | ha | 438 | |
302 | hidnplayr | 439 | jmp .exit ; If not IP or ARP, ignore |
1 | ha | 440 | |
261 | hidnplayr | 441 | .is_ip: |
373 | mikedld | 442 | DEBUGF 1,"K : eth_rx - IP packet\n" |
261 | hidnplayr | 443 | inc dword [ip_rx_count] |
444 | call ether_IP_handler |
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445 | jmp .exit |
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1 | ha | 446 | |
261 | hidnplayr | 447 | .is_arp: |
373 | mikedld | 448 | DEBUGF 1,"K : eth_rx - ARP packet\n" |
261 | hidnplayr | 449 | ; At this point, the packet is still in the Ether_buffer |
450 | call arp_handler |
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1 | ha | 451 | |
261 | hidnplayr | 452 | .exit: |
302 | hidnplayr | 453 | ret |