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- /*
- * ether.cpp - Ethernet device driver
- *
- * Basilisk II (C) 1997-2001 Christian Bauer
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- /*
- * SEE ALSO
- * Inside Macintosh: Devices, chapter 1 "Device Manager"
- * Inside Macintosh: Networking, chapter 11 "Ethernet, Token Ring, and FDDI"
- * Inside AppleTalk, chapter 3 "Ethernet and TokenTalk Link Access Protocols"
- */
-
- #include <string.h>
-
- #include "sysdeps.h"
- #include "cpu_emulation.h"
- #include "main.h"
- #include "macos_util.h"
- #include "emul_op.h"
- #include "ether.h"
- #include "ether_defs.h"
-
- #define DEBUG 0
- #include "debug.h"
-
-
- // Global variables
- uint8 ether_addr[6]; // Ethernet address (set by EtherInit())
- bool net_open = false; // Flag: initialization succeeded, network device open (set by EtherInit())
-
- uint32 ether_data = 0; // Mac address of driver data in MacOS RAM
-
-
- /*
- * Driver Open() routine
- */
-
- int16 EtherOpen(uint32 pb, uint32 dce)
- {
- D(bug("EtherOpen\n"));
-
- // Allocate driver data
- M68kRegisters r;
- r.d[0] = SIZEOF_etherdata;
- Execute68kTrap(0xa71e, &r); // NewPtrSysClear()
- if (r.a[0] == 0)
- return openErr;
- ether_data = r.a[0];
- D(bug(" data %08lx\n", ether_data));
-
- WriteMacInt16(ether_data + ed_DeferredTask + qType, dtQType);
- WriteMacInt32(ether_data + ed_DeferredTask + dtAddr, ether_data + ed_Code);
- WriteMacInt32(ether_data + ed_DeferredTask + dtParam, ether_data + ed_Result);
- // Deferred function for signalling that packet write is complete (pointer to mydtResult in a1)
- WriteMacInt16(ether_data + ed_Code, 0x2019); // move.l (a1)+,d0 (result)
- WriteMacInt16(ether_data + ed_Code + 2, 0x2251); // move.l (a1),a1 (dce)
- WriteMacInt32(ether_data + ed_Code + 4, 0x207808fc); // move.l JIODone,a0
- WriteMacInt16(ether_data + ed_Code + 8, 0x4ed0); // jmp (a0)
-
- WriteMacInt32(ether_data + ed_DCE, dce);
- // ReadPacket/ReadRest routines
- WriteMacInt16(ether_data + ed_ReadPacket, 0x6010); // bra 2
- WriteMacInt16(ether_data + ed_ReadPacket + 2, 0x3003); // move.w d3,d0
- WriteMacInt16(ether_data + ed_ReadPacket + 4, 0x9041); // sub.w d1,d0
- WriteMacInt16(ether_data + ed_ReadPacket + 6, 0x4a43); // tst.w d3
- WriteMacInt16(ether_data + ed_ReadPacket + 8, 0x6702); // beq 1
- WriteMacInt16(ether_data + ed_ReadPacket + 10, M68K_EMUL_OP_ETHER_READ_PACKET);
- WriteMacInt16(ether_data + ed_ReadPacket + 12, 0x3600); //1 move.w d0,d3
- WriteMacInt16(ether_data + ed_ReadPacket + 14, 0x7000); // moveq #0,d0
- WriteMacInt16(ether_data + ed_ReadPacket + 16, 0x4e75); // rts
- WriteMacInt16(ether_data + ed_ReadPacket + 18, M68K_EMUL_OP_ETHER_READ_PACKET); //2
- WriteMacInt16(ether_data + ed_ReadPacket + 20, 0x4a43); // tst.w d3
- WriteMacInt16(ether_data + ed_ReadPacket + 22, 0x4e75); // rts
- return 0;
- }
-
-
- /*
- * Driver Control() routine
- */
-
- int16 EtherControl(uint32 pb, uint32 dce)
- {
- uint16 code = ReadMacInt16(pb + csCode);
- D(bug("EtherControl %d\n", code));
- switch (code) {
- case 1: // KillIO
- return -1;
-
- case kENetAddMulti: // Add multicast address
- D(bug("AddMulti %08lx%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4)));
- if (net_open)
- return ether_add_multicast(pb);
- else
- return noErr;
-
- case kENetDelMulti: // Delete multicast address
- D(bug("DelMulti %08lx%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4)));
- if (net_open)
- return ether_del_multicast(pb);
- else
- return noErr;
-
- case kENetAttachPH: // Attach protocol handler
- D(bug("AttachPH prot %04x, handler %08lx\n", ReadMacInt16(pb + eProtType), ReadMacInt32(pb + ePointer)));
- if (net_open)
- return ether_attach_ph(ReadMacInt16(pb + eProtType), ReadMacInt32(pb + ePointer));
- else
- return noErr;
-
- case kENetDetachPH: // Detach protocol handler
- D(bug("DetachPH prot %04x\n", ReadMacInt16(pb + eProtType)));
- if (net_open)
- return ether_detach_ph(ReadMacInt16(pb + eProtType));
- else
- return noErr;
-
- case kENetWrite: // Transmit raw Ethernet packet
- D(bug("EtherWrite\n"));
- if (ReadMacInt16(ReadMacInt32(pb + ePointer)) < 14)
- return eLenErr; // Header incomplete
- if (net_open)
- return ether_write(ReadMacInt32(pb + ePointer));
- else
- return noErr;
-
- case kENetGetInfo: { // Get device information/statistics
- D(bug("GetInfo buf %08lx, size %d\n", ReadMacInt32(pb + ePointer), ReadMacInt16(pb + eBuffSize)));
-
- // Collect info (only ethernet address)
- uint8 buf[18];
- memset(buf, 0, 18);
- memcpy(buf, ether_addr, 6);
-
- // Transfer info to supplied buffer
- int16 size = ReadMacInt16(pb + eBuffSize);
- if (size > 18)
- size = 18;
- WriteMacInt16(pb + eDataSize, size); // Number of bytes actually written
- Host2Mac_memcpy(ReadMacInt32(pb + ePointer), buf, size);
- return noErr;
- }
-
- case kENetSetGeneral: // Set general mode (always in general mode)
- D(bug("SetGeneral\n"));
- return noErr;
-
- default:
- printf("WARNING: Unknown EtherControl(%d)\n", code);
- return controlErr;
- }
- }
-
-
- /*
- * Ethernet ReadPacket routine
- */
-
- void EtherReadPacket(uint8 **src, uint32 &dest, uint32 &len, uint32 &remaining)
- {
- D(bug("EtherReadPacket src %08lx, dest %08lx, len %08lx, remaining %08lx\n", *src, dest, len, remaining));
- uint32 todo = len > remaining ? remaining : len;
- Host2Mac_memcpy(dest, *src, todo);
- *src += todo;
- dest += todo;
- len -= todo;
- remaining -= todo;
- }
-