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/* |
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* ether_windows.cpp - Ethernet device driver |
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* |
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* Basilisk II (C) 1997-2004 Christian Bauer |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* Windows platform specific code copyright (C) Lauri Pesonen |
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* |
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void EtherInterrupt(void) |
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{ |
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int length; |
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static uint8 packet[1514]; |
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EthernetPacket ether_packet; |
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uint32 packet = ether_packet.addr(); |
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D(bug("EtherIRQ\r\n")); |
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// Call protocol handler for received packets |
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while( (length = dequeue_packet(packet)) > 0 ) { |
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while( (length = dequeue_packet(Mac2HostAddr(packet))) > 0 ) { |
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if (length < 14) |
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continue; |
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#if MONITOR |
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bug("Receiving Ethernet packet (%d bytes):\n",(int)length); |
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dump_packet( packet, length ); |
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dump_packet( Mac2HostAddr(packet), length ); |
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#endif |
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// Get packet type |
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uint16 type = ntohs(*(uint16 *)(packet + 12)); |
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uint16 type = ReadMacInt16(packet + 12); |
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// Look for protocol |
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NetProtocol *prot = find_protocol(type); |
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// break; |
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// Copy header to RHA |
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memcpy(Mac2HostAddr(ether_data + ed_RHA), packet, 14); |
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Mac2Mac_memcpy(ether_data + ed_RHA, packet, 14); |
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D(bug(" header %08lx%04lx %08lx%04lx %04lx\r\n", ReadMacInt32(ether_data + ed_RHA), ReadMacInt16(ether_data + ed_RHA + 4), ReadMacInt32(ether_data + ed_RHA + 6), ReadMacInt16(ether_data + ed_RHA + 10), ReadMacInt16(ether_data + ed_RHA + 12))); |
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// Call protocol handler |
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r.d[0] = type; // Packet type |
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r.d[1] = length - 14; // Remaining packet length (without header, for ReadPacket) |
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r.a[0] = (uint32)packet + 14; // Pointer to packet (host address, for ReadPacket) |
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r.a[0] = packet + 14; // Pointer to packet (Mac address, for ReadPacket) |
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r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA |
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r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines |
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D(bug(" calling protocol handler %08lx, type %08lx, length %08lx, data %08lx, rha %08lx, read_packet %08lx\r\n", prot->handler, r.d[0], r.d[1], r.a[0], r.a[3], r.a[4])); |
