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  1. ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  2. ;;                                                                 ;;
  3. ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved.    ;;
  4. ;; Distributed under terms of the GNU General Public License       ;;
  5. ;;                                                                 ;;
  6. ;;  ETHERNET.INC                                                   ;;
  7. ;;                                                                 ;;
  8. ;;  Ethernet network layer for Menuet OS                           ;;
  9. ;;                                                                 ;;
  10. ;;  This file contains the following:                              ;;
  11. ;;      PCI bus scanning for valid devices                         ;;
  12. ;;      Table of supported ethernet drivers                        ;;
  13. ;;      Code to identify and activate a supported driver           ;;
  14. ;;      ARP handler                                                ;;
  15. ;;      Driver interface to the IP layer                           ;;
  16. ;;      Gateway support                                            ;;
  17. ;;                                                                 ;;
  18. ;;  Individual driver files are included here                      ;;
  19. ;;                                                                 ;;
  20. ;;  The PCI bus scanning code was ported from the etherboot        ;;
  21. ;;  5.0.6 project. The copyright statement for that code is        ;;
  22. ;;                                                                 ;;
  23. ;;          GNU GENERAL PUBLIC LICENSE                             ;;
  24. ;;             Version 2, June 1991                                ;;
  25. ;;                                                                 ;;
  26. ;;  remaining parts Copyright 2002 Mike Hibbett                    ;;
  27. ;;   mikeh@oceanfree.net                                           ;;
  28. ;;                                                                 ;;
  29. ;;  See file COPYING for details                                   ;;
  30. ;;                                                                 ;;
  31. ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  32.  
  33. $Revision: 2465 $
  34.  
  35.  
  36. ;********************************************************************
  37. ;   Interface
  38. ;      ethernet_driver   called by stack_handler in stack.inc
  39. ;      eth_probe         called by app_stack_handler in stack.inc
  40. ;
  41. ;********************************************************************
  42.  
  43. ETHER_IP                    equ     0x0008      ; Reversed from 0800 for intel
  44. ETHER_ARP                   equ     0x0608      ; Reversed from 0806 for intel
  45. ETHER_RARP                  equ     0x3580
  46.  
  47. struc ETH_FRAME
  48. {  .DstMAC       dp   ?  ;destination MAC-address [6 bytes]
  49.    .SrcMAC       dp   ?  ;source MAC-address [6 bytes]
  50.    .Type         dw   ?  ;type of the upper-layer protocol [2 bytes]
  51.    .Data         db   ?  ;data [46-1500 bytes]
  52.  }
  53.  
  54. virtual at Ether_buffer
  55.   ETH_FRAME ETH_FRAME
  56. end virtual
  57.  
  58.  
  59. ; Some useful information on data structures
  60.  
  61. ;     Ethernet Packet - ARP Request example
  62. ;
  63. ;   0                   1                   2                   3
  64. ;   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
  65. ;
  66. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  67. ;   |       Dest   H/W Address                                      |
  68. ;   |                    ( 14 byte header )                         |
  69. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  70. ;   |                               |     Source     H/W Address    |
  71. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  72. ;   |                                                               |
  73. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  74. ;   |    Protocol - ARP 08  06      |
  75. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  76.  
  77. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  78. ;   |  H/W Type  00           01    |  Protocol Type   08 00        |
  79. ;   |                   ( ARP Request packet )                      |
  80. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  81. ;   | HLen    0x06  | PLen    0x04  |    OpCode        00   01      |
  82. ;   |               ( 0001 for request, 0002 for reply )            |
  83. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  84. ;   | Source Hardware Address ( MAC Address )                       |
  85. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  86. ;   |                               |  Source IP Address            |
  87. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  88. ;   |                               | Destination Hardware Address  |
  89. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  90. ;   |                                                               |
  91. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  92. ;   | Destination IP Address                                        |
  93. ;   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  94.  
  95. ; Include individual drivers source files at this point.
  96. ; If you create a new driver, include it below.
  97.  
  98. include "drivers/rtl8029.inc"
  99. include "drivers/i8255x.inc"
  100. include "drivers/rtl8139.inc"
  101. include "drivers/3c59x.inc"
  102. include "drivers/sis900.inc"
  103. include "drivers/pcnet32.inc"
  104. include "drivers/rtl8169.inc"
  105. include "drivers/forcedeth.inc"
  106. include "drivers/r6040.inc"
  107.  
  108. ; PCICards
  109. ; ========
  110. ; PCI vendor and hardware types for hardware supported by the above drivers
  111. ; If you add a driver, ensure you update this datastructure, otherwise the
  112. ; card will not be probed.
  113. ; Each driver is defined by 4 double words. These are
  114. ;   PCIVendorDevice  probeFunction ResetFunction PollFunction transmitFunction
  115. ; The last entry must be kept at all zeros, to indicate the end of the list
  116. ; As a PCI driver may support more than one hardware implementation, there may
  117. ; be several lines which refer to the same functions.
  118. ; The first driver found on the PCI bus will be the one used.
  119.  
  120. PCICARDS_ENTRY_SIZE         equ     24    ; Size of each PCICARDS entry
  121.  
  122. iglobal
  123. PCICards:
  124. dd  0x12098086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0
  125. dd  0x10298086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0
  126. dd  0x12298086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0
  127. dd  0x10308086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0
  128. dd  0x24498086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0
  129. dd  0x10688086, I8255x_probe, I8255x_reset, I8255x_poll, I8255x_transmit, 0
  130.  
  131. dd  0x802910ec, rtl8029_probe, rtl8029_reset, rtl8029_poll, rtl8029_transmit, 0
  132.  
  133. dd  0x813910ec, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  134. dd  0x813810ec, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  135. dd  0x12111113, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  136. dd  0x13601500, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  137. dd  0x13604033, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  138. dd  0x13001186, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  139. dd  0x13401186, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  140. dd  0xab0613d1, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  141. dd  0xa1171259, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  142. dd  0xa11e1259, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  143. dd  0xab0614ea, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  144. dd  0xab0714ea, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  145. dd  0x123411db, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  146. dd  0x91301432, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  147. dd  0x101202ac, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  148. dd  0x0106018a, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  149. dd  0x1211126c, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  150. dd  0x81391743, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  151. dd  0x8139021b, rtl8139_probe, rtl8139_reset, rtl8139_poll, rtl8139_transmit, rtl8139_cable
  152.  
  153. dd  0x816810ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0
  154. dd  0x816910ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0
  155. dd  0x011616ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0
  156. dd  0x43001186, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0
  157. dd  0x816710ec, rtl8169_probe, rtl8169_reset, rtl8169_poll, rtl8169_transmit, 0
  158.  
  159. dd  0x590010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  160. dd  0x592010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  161. dd  0x597010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  162. dd  0x595010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  163. dd  0x595110b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  164. dd  0x595210b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  165. dd  0x900010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  166. dd  0x900110b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  167. dd  0x900410b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  168. dd  0x900510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  169. dd  0x900610b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  170. dd  0x900A10b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  171. dd  0x905010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  172. dd  0x905110b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  173. dd  0x905510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  174. dd  0x905810b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  175. dd  0x905A10b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  176. dd  0x920010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  177. dd  0x980010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  178. dd  0x980510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  179. dd  0x764610b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  180. dd  0x505510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  181. dd  0x605510b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  182. dd  0x605610b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  183. dd  0x5b5710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  184. dd  0x505710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  185. dd  0x515710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  186. dd  0x525710b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  187. dd  0x656010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  188. dd  0x656210b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  189. dd  0x656410b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  190. dd  0x450010b7, e3c59x_probe, e3c59x_reset, e3c59x_poll, e3c59x_transmit, 0
  191.  
  192. dd  0x09001039, SIS900_probe, SIS900_reset, SIS900_poll, SIS900_transmit, 0
  193. dd  0x70161039, SIS900_probe, SIS900_reset, SIS900_poll, SIS900_transmit, 0
  194.  
  195. dd  0x20001022, pcnet32_probe, pcnet32_reset, pcnet32_poll, pcnet32_xmit, 0
  196. dd  0x26251022, pcnet32_probe, pcnet32_reset, pcnet32_poll, pcnet32_xmit, 0
  197. dd  0x20011022, pcnet32_probe, pcnet32_reset, pcnet32_poll, pcnet32_xmit, 0
  198.  
  199. dd  0x006610de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; nVidia Corporation nForce2 Ethernet Controller
  200. dd  0x01c310de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  201. dd  0x00D610de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  202. dd  0x008610de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  203. dd  0x008c10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  204. dd  0x00e610de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  205. dd  0x00df10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  206. dd  0x005610de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  207. dd  0x005710de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  208. dd  0x003710de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  209. dd  0x003810de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  210. dd  0x026810de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  211. dd  0x026910de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  212. dd  0x037210de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  213. dd  0x037310de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  214. dd  0x03e510de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  215. dd  0x03e610de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  216. dd  0x03ee10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  217. dd  0x03ef10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  218. dd  0x045010de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  219. dd  0x045110de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  220. dd  0x045210de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  221. dd  0x045310de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  222. dd  0x054c10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  223. dd  0x054d10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  224. dd  0x054e10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  225. dd  0x054f10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  226. dd  0x07dc10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  227. dd  0x07dd10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  228. dd  0x07de10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  229. dd  0x07df10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  230. dd  0x076010de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; MCP77 Ethernet Controller
  231. dd  0x076110de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  232. dd  0x076210de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  233. dd  0x076310de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  234. dd  0x0ab010de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  235. dd  0x0ab110de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  236. dd  0x0ab210de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  237. dd  0x0ab310de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  238. dd  0x0d7d10de, forcedeth_probe, forcedeth_reset, forcedeth_poll, forcedeth_transmit, forcedeth_cable ; not tested
  239.  
  240. dd  0x604017F3, r6040_probe, r6040_reset, r6040_poll, r6040_transmit, 0
  241.  
  242. rb PCICARDS_ENTRY_SIZE  ; end of list marker, do not remove
  243. endg
  244.  
  245. uglobal
  246. ;Net-stack's interface's settings
  247.   node_addr:
  248.                       db  0,0,0,0,0,0
  249.   gateway_ip:
  250.                       dd  0
  251.   dns_ip:
  252.                       dd  0
  253.  
  254.   eth_rx_data_len:
  255.                       dw  0
  256.   eth_status:
  257.                       dd  0
  258.   io_addr:
  259.                       dd  0
  260.   hdrtype:
  261.                       db  0
  262.   vendor_device:
  263.                       dd  0
  264.   pci_data:
  265.                       dd  0
  266.   pci_dev:
  267.                       dd  0
  268.   pci_bus:
  269.                       dd  0
  270.  
  271.   ; These will hold pointers to the selected driver functions
  272.   drvr_probe:
  273.                       dd  0
  274.   drvr_reset:
  275.                       dd  0
  276.   drvr_poll:
  277.                       dd  0
  278.   drvr_transmit:
  279.                       dd  0
  280.   drvr_cable:
  281.                       dd  0
  282.  
  283. endg
  284.  
  285. iglobal
  286.   broadcast_add:
  287.                       db  0xff,0xff,0xff,0xff,0xff,0xff
  288.   subnet_mask:
  289.                       dd  0x00ffffff   ; 255.255.255.0
  290. endg
  291.  
  292. include "arp.inc"    ;arp-protocol functions
  293. include "pci.inc"    ;PCI bus access functions
  294.  
  295.  
  296. ;***************************************************************************
  297. ;   Function
  298. ;      eth_tx
  299. ;
  300. ;   Description
  301. ;      Looks at the NET1OUT_QUEUE for data to send.
  302. ;      Stores that destination IP in a location used by the tx routine
  303. ;      Looks up the MAC address in the ARP table; stores that where
  304. ;      the tx routine can get it
  305. ;      Get the length of the data. Store that where the tx routine wants it
  306. ;      Call tx
  307. ;      Places buffer on empty queue when the tx routine finished
  308. ;
  309. ;***************************************************************************
  310. proc eth_tx stdcall uses ebx esi edi
  311. local MACAddress  dp  ?  ;allocate 6 bytes in the stack
  312.  
  313.     ; Look for a buffer to tx
  314.         mov     eax, NET1OUT_QUEUE
  315.         call    dequeue
  316.         cmp     ax, NO_BUFFER
  317.         je      .exit        ; Exit if no buffer available
  318.  
  319.         push    eax;save buffer number
  320.  
  321.     ; convert buffer pointer eax to the absolute address
  322.         imul    eax, IPBUFFSIZE
  323.         add     eax, IPbuffs
  324.  
  325.     ; Extract the destination IP
  326.     ; find the destination IP in the ARP table, get MAC
  327.     ; store this MAC in 'MACAddress'
  328.         mov     ebx, eax           ; Save buffer address
  329.         mov     edx, [ebx + 16]    ; get destination address
  330.  
  331.     ; If the destination address is 255.255.255.255,
  332.     ; set the MACAddress to all ones ( broadcast )
  333.         cld
  334.         mov     esi, broadcast_add
  335.         lea     edi, [MACAddress]
  336.         movsd
  337.         movsw
  338.         cmp     edx, 0xffffffff
  339.         je      .send            ; If it is broadcast, just send
  340.  
  341.         lea     eax, [MACAddress];cause this is local variable
  342.         stdcall arp_table_manager, ARP_TABLE_IP_TO_MAC, edx, eax;opcode,IP,MAC_ptr - Get the MAC address.
  343.  
  344.         cmp     eax, ARP_VALID_MAPPING
  345.         je      .send
  346.  
  347.     ; No valid entry. Has the request been sent, but timed out?
  348.         cmp     eax, ARP_RESPONSE_TIMEOUT
  349.         je      .freebuf
  350.  
  351.   .wait_response:                   ;we wait arp-response
  352.                                     ; Re-queue the packet, and exit
  353.         pop     ebx
  354.         mov     eax, NET1OUT_QUEUE
  355.         call    queue                    ; Get the buffer back
  356.         jmp     .exit
  357.  
  358.   .send:    ;if ARP_VALID_MAPPING then send the packet
  359.         lea     edi, [MACAddress] ; Pointer to 48 bit destination address
  360.         movzx   ecx, word[ebx+2]  ; Size of IP packet to send
  361.         xchg    ch, cl            ; because mirror byte-order
  362.         mov     esi, ebx          ; Pointer to packet data
  363.         mov     bx, ETHER_IP      ; Type of packet
  364.         push    ebp
  365.         call    dword [drvr_transmit]; Call the drivers transmit function
  366.         pop     ebp
  367.  
  368.     ; OK, we have sent a packet, so increment the count
  369.         inc     dword [ip_tx_count]
  370.  
  371.     ; And finally, return the buffer to the free queue
  372.   .freebuf:
  373.         pop     eax
  374.         call    freeBuff
  375.  
  376.   .exit:
  377.         ret
  378. endp
  379.  
  380. ;***************************************************************************
  381. ;   Function
  382. ;      ether_IP_handler
  383. ;
  384. ;   Description
  385. ;      Called when an IP ethernet packet is received on the ethernet
  386. ;      Header + Data is in Ether_buffer[]
  387. ;      We just need to get a buffer from the 'free' queue, and
  388. ;      store the packet in it, then insert the packet number into the
  389. ;      IPRX queue.
  390. ;      If no queue entry is available, the packet is silently discarded
  391. ;      All registers may be destroyed
  392. ;
  393. ;***************************************************************************
  394. ;uglobal
  395. ;  ether_IP_handler_cnt dd ?
  396. ;endg
  397. ether_IP_handler:
  398.         mov     eax, EMPTY_QUEUE
  399.         call    dequeue
  400.         cmp     ax, NO_BUFFER
  401.         je      eiph00x
  402.  
  403.     ; convert buffer pointer eax to the absolute address
  404.         push    eax
  405.         mov     ecx, IPBUFFSIZE
  406.         mul     ecx
  407.         add     eax, IPbuffs
  408.  
  409.         mov     edi, eax
  410.  
  411.     ; get a pointer to the start of the DATA
  412.         mov     esi, ETH_FRAME.Data
  413.  
  414.     ; Now store it all away
  415.         mov     ecx, IPBUFFSIZE / 4 ; Copy all of the available
  416.                               ; data across - worse case
  417.         cld
  418.         rep movsd
  419.  
  420. ;        inc     [ether_IP_handler_cnt]
  421. ;        DEBUGF  1, "K : ether_IP_handler (%u)\n", [ether_IP_handler_cnt]
  422.  
  423.     ; And finally, place the buffer in the IPRX queue
  424.         pop     ebx
  425.         mov     eax, IPIN_QUEUE
  426.         call    queue
  427.  
  428. eiph00x:
  429.         ret
  430.  
  431. ;***************************************************************************
  432. ;   Function
  433. ;      eth_probe
  434. ;   Description
  435. ;      Searches for an ethernet card. If found, the card is enabled and
  436. ;      the ethernet -> IP link established
  437. ;
  438. ;      This function scans the PCI bus looking for a supported device.
  439. ;      ISA bus is currently not supported.
  440. ;
  441. ;        eax is 0 if no hardware found
  442. ;***************************************************************************
  443. eth_probe:
  444.     ; Find a card on the PCI bus, and get it's address
  445.         call    scan_bus                ; Find the ethernet cards PIC address
  446.         xor     eax, eax
  447.         cmp     [io_addr], eax
  448.         je      ep_00x                  ; Return 0 in eax if no cards found
  449.  
  450.         call    dword [drvr_probe]      ; Call the drivers probe function
  451.  
  452.         mov     eax, [io_addr]          ; return a non zero value
  453.  
  454. ep_00x:
  455.         ret
  456.  
  457. ;***************************************************************************
  458. ;   Function
  459. ;      ethernet_driver
  460. ;
  461. ;   Description
  462. ;       The ethernet RX and TX handler
  463. ;       This is a kernel function, called by stack_handler
  464. ;
  465. ;***************************************************************************
  466. ethernet_driver:
  467.     ; Do nothing if the driver is inactive
  468.         cmp     [ethernet_active], byte 0
  469.         je      eth_exit
  470.  
  471.         call    eth_rx
  472.         call    eth_tx
  473.  
  474. eth_exit:
  475.         ret
  476.  
  477. ;***************************************************************************
  478. ;   Function
  479. ;      eth_rx
  480. ;
  481. ;   Description
  482. ;      Polls the ethernet card for received data. Extracts if present
  483. ;       Depending on the Protocol within the packet:
  484. ;         ARP : Pass to ARP_handler. This may result in an ARP reply
  485. ;               being tx'ed
  486. ;         IP  : Store in an IP buffer
  487. ;
  488. ;***************************************************************************
  489. eth_rx:
  490.         xor     ax, ax
  491.         mov     [eth_rx_data_len], ax
  492.         call    dword [drvr_poll]   ; Call the drivers poll function
  493.  
  494.         mov     ax, [eth_rx_data_len]
  495.         cmp     ax, 0
  496.         je      .exit
  497.  
  498.  
  499.     ; Check the protocol. Call appropriate handler
  500.  
  501.         mov     ax, [ETH_FRAME.Type]; The address of the protocol word
  502.  
  503.         cmp     ax, ETHER_IP
  504.         je      .is_ip               ; It's IP
  505.  
  506.         cmp     ax, ETHER_ARP
  507.         je      .is_arp              ; It is ARP
  508.  
  509.     DEBUGF  1,"K : eth_rx - dumped (%u)\n", ax
  510.         inc     [dumped_rx_count]
  511.         jmp     .exit           ; If not IP or ARP, ignore
  512.  
  513.   .is_ip:
  514. ;    DEBUGF  1,"K : eth_rx - IP packet\n"
  515.         inc     dword [ip_rx_count]
  516.         call    ether_IP_handler
  517.         jmp     .exit
  518.  
  519.   .is_arp:
  520. ;    DEBUGF  1,"K : eth_rx - ARP packet\n"
  521.     ; At this point, the packet is still in the Ether_buffer
  522.         call    arp_handler
  523.  
  524.   .exit:
  525.         ret
  526.