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/* |
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* ether.cpp - Ethernet device driver |
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* |
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* Basilisk II (C) 1997-2000 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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/* |
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* SEE ALSO |
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* Inside Macintosh: Devices, chapter 1 "Device Manager" |
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* Inside Macintosh: Networking, chapter 11 "Ethernet, Token Ring, and FDDI" |
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* Inside AppleTalk, chapter 3 "Ethernet and TokenTalk Link Access Protocols" |
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*/ |
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|
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#include <string.h> |
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|
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
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#include "main.h" |
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#include "macos_util.h" |
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#include "emul_op.h" |
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#include "ether.h" |
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#include "ether_defs.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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// Global variables |
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uint8 ether_addr[6]; // Ethernet address (set by EtherInit()) |
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bool net_open = false; // Flag: initialization succeeded, network device open (set by EtherInit()) |
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|
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uint32 ether_data = 0; // Mac address of driver data in MacOS RAM |
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|
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|
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/* |
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* Driver Open() routine |
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*/ |
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|
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int16 EtherOpen(uint32 pb, uint32 dce) |
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{ |
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D(bug("EtherOpen\n")); |
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|
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// Allocate driver data |
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M68kRegisters r; |
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r.d[0] = SIZEOF_etherdata; |
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Execute68kTrap(0xa71e, &r); // NewPtrSysClear() |
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if (r.a[0] == 0) |
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return openErr; |
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ether_data = r.a[0]; |
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D(bug(" data %08lx\n", ether_data)); |
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|
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WriteMacInt16(ether_data + ed_DeferredTask + qType, dtQType); |
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WriteMacInt32(ether_data + ed_DeferredTask + dtAddr, ether_data + ed_Code); |
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WriteMacInt32(ether_data + ed_DeferredTask + dtParam, ether_data + ed_Result); |
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// Deferred function for signalling that packet write is complete (pointer to mydtResult in a1) |
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WriteMacInt16(ether_data + ed_Code, 0x2019); // move.l (a1)+,d0 (result) |
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WriteMacInt16(ether_data + ed_Code + 2, 0x2251); // move.l (a1),a1 (dce) |
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WriteMacInt32(ether_data + ed_Code + 4, 0x207808fc); // move.l JIODone,a0 |
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WriteMacInt16(ether_data + ed_Code + 8, 0x4ed0); // jmp (a0) |
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|
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WriteMacInt32(ether_data + ed_DCE, dce); |
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// ReadPacket/ReadRest routines |
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WriteMacInt16(ether_data + ed_ReadPacket, 0x6010); // bra 2 |
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WriteMacInt16(ether_data + ed_ReadPacket + 2, 0x3003); // move.w d3,d0 |
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WriteMacInt16(ether_data + ed_ReadPacket + 4, 0x9041); // sub.w d1,d0 |
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WriteMacInt16(ether_data + ed_ReadPacket + 6, 0x4a43); // tst.w d3 |
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WriteMacInt16(ether_data + ed_ReadPacket + 8, 0x6702); // beq 1 |
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WriteMacInt16(ether_data + ed_ReadPacket + 10, M68K_EMUL_OP_ETHER_READ_PACKET); |
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WriteMacInt16(ether_data + ed_ReadPacket + 12, 0x3600); //1 move.w d0,d3 |
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WriteMacInt16(ether_data + ed_ReadPacket + 14, 0x7000); // moveq #0,d0 |
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WriteMacInt16(ether_data + ed_ReadPacket + 16, 0x4e75); // rts |
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WriteMacInt16(ether_data + ed_ReadPacket + 18, M68K_EMUL_OP_ETHER_READ_PACKET); //2 |
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WriteMacInt16(ether_data + ed_ReadPacket + 20, 0x4a43); // tst.w d3 |
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WriteMacInt16(ether_data + ed_ReadPacket + 22, 0x4e75); // rts |
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return 0; |
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} |
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|
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|
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/* |
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* Driver Control() routine |
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*/ |
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|
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int16 EtherControl(uint32 pb, uint32 dce) |
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{ |
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uint16 code = ReadMacInt16(pb + csCode); |
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D(bug("EtherControl %d\n", code)); |
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switch (code) { |
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case 1: // KillIO |
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return -1; |
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|
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case kENetAddMulti: // Add multicast address |
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D(bug("AddMulti %08lx%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4))); |
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if (net_open) |
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return ether_add_multicast(pb); |
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else |
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return noErr; |
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|
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case kENetDelMulti: // Delete multicast address |
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D(bug("DelMulti %08lx%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4))); |
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if (net_open) |
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return ether_del_multicast(pb); |
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else |
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return noErr; |
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|
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case kENetAttachPH: // Attach protocol handler |
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D(bug("AttachPH prot %04x, handler %08lx\n", ReadMacInt16(pb + eProtType), ReadMacInt32(pb + ePointer))); |
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if (net_open) |
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return ether_attach_ph(ReadMacInt16(pb + eProtType), ReadMacInt32(pb + ePointer)); |
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else |
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return noErr; |
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|
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case kENetDetachPH: // Detach protocol handler |
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D(bug("DetachPH prot %04x\n", ReadMacInt16(pb + eProtType))); |
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if (net_open) |
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return ether_detach_ph(ReadMacInt16(pb + eProtType)); |
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else |
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return noErr; |
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|
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case kENetWrite: // Transmit raw Ethernet packet |
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D(bug("EtherWrite\n")); |
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if (ReadMacInt16(ReadMacInt32(pb + ePointer)) < 14) |
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return eLenErr; // Header incomplete |
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if (net_open) |
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return ether_write(ReadMacInt32(pb + ePointer)); |
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else |
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return noErr; |
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|
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case kENetGetInfo: { // Get device information/statistics |
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D(bug("GetInfo buf %08lx, size %d\n", ReadMacInt32(pb + ePointer), ReadMacInt16(pb + eBuffSize))); |
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|
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// Collect info (only ethernet address) |
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uint8 buf[18]; |
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memset(buf, 0, 18); |
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memcpy(buf, ether_addr, 6); |
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|
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// Transfer info to supplied buffer |
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int16 size = ReadMacInt16(pb + eBuffSize); |
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if (size > 18) |
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size = 18; |
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WriteMacInt16(pb + eDataSize, size); // Number of bytes actually written |
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Host2Mac_memcpy(ReadMacInt32(pb + ePointer), buf, size); |
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return noErr; |
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} |
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|
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case kENetSetGeneral: // Set general mode (always in general mode) |
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D(bug("SetGeneral\n")); |
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return noErr; |
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|
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default: |
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printf("WARNING: Unknown EtherControl(%d)\n", code); |
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return controlErr; |
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} |
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} |
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|
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|
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/* |
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* Ethernet ReadPacket routine |
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*/ |
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|
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void EtherReadPacket(uint8 **src, uint32 &dest, uint32 &len, uint32 &remaining) |
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{ |
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D(bug("EtherReadPacket src %08lx, dest %08lx, len %08lx, remaining %08lx\n", *src, dest, len, remaining)); |
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uint32 todo = len > remaining ? remaining : len; |
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Host2Mac_memcpy(dest, *src, todo); |
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*src += todo; |
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dest += todo; |
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len -= todo; |
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remaining -= todo; |
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} |
