#ifndef __MAGPLIP_H #define __MAGPLIP_H /* ** $VER: magplip.h 1.9 (03 Sep 1995) ** ** magplip.device - Parallel Line Internet Protocol ** ** Original code written by Oliver Wagner and Michael Balzer. ** ** This version has been completely reworked by Marius Gröger, ** introducing slight protocol changes. The new source is ** a lot better organized and maintainable. ** ** Additional changes and code cleanup by Jan Kratochvil and Martin Mares. ** The new source is significantly faster and yet better maintainable. ** ** (C) Copyright 1993-1994 Oliver Wagner & Michael Balzer ** (C) Copyright 1995 Jan Kratochvil & Martin Mares ** (C) Copyright 1995 Marius Gröger ** All Rights Reserved ** ** $HISTORY: ** ** 03 Sep 1995 : 001.009 : + removed PLIP(F|B)_SIDEA ** + hardware addressing fields in PLIPBase ** 30 Aug 1995 : 001.008 : support for timer-timed timeout :-) ** some pecularities moved to compiler.h ** 13 Aug 1995 : 001.007 : code cleanup ** 29 Jul 1995 : 001.006 : support for arbitration delay ** 24 Jul 1995 : 001.005 : only one delay value in config ** some volatile elements in GD ** 25 Apr 1995 : 001.004 : #define's FAR ** 06 Mar 1995 : 001.003 : added collision delays ** 04 Mar 1995 : 001.002 : packet-type now ULONG ** 18 Feb 1995 : 001.001 : some SAS/C wrappers, better data base handling ** 12 Feb 1995 : 001.000 : reworked original */ /* system header files */ #ifndef DEVICES_SANA2_H #include #endif #ifndef EXEC_SEMAPHORES_H #include #endif #ifndef EXEC_LISTS_H #include #endif #ifndef EXEC_INTERRUPTS_H #include #endif #ifndef EXEC_LIBRARIES_H #include #endif #ifndef DOS_DOS_H #include #endif #ifndef __COMPILER_H #include "compiler.h" #endif /****************************************************************************/ /* memory economy is *everything* :-) */ #define SERVERTASKNAME pb->pb_DevNode.lib_Node.ln_Name /* default values */ #define PLIP_DEFMTU 1024 #define PLIP_DEFBPS 100000 #define PLIP_DEFRETRIES 32 #define PLIP_DEFTIMEOUT (500*1000) #define PLIP_DEFDELAY 0 #define PLIP_DELAYDIFF 2000 #define PLIP_DEFARBITRATIONDELAY 500 /* maximum values */ #define PLIP_MAXMTU 8192 #define PLIP_MAXRETRIES 127 /* this is really the maximum, don't */ /* try higher values! */ #define PLIP_ADDRFIELDSIZE 1 /****************************************************************************/ #define PKTFRAMESIZE_1 4 /* the sync-field and packet-size */ #define PKTFRAMESIZE_2 6 /* crc and packet type */ struct PLIPFrame { USHORT pf_Sync; SHORT pf_Size; USHORT pf_CRC; ULONG pf_Type; UBYTE pf_Data[PLIP_MAXMTU]; }; #define SYNCBYTE_HEAD 0x42 #define SYNCBYTE_CRC 0x01 #define SYNCBYTE_NOCRC 0x02 #define SYNCWORD_CRC ((SYNCBYTE_HEAD << 8) | SYNCBYTE_CRC) #define SYNCWORD_NOCRC ((SYNCBYTE_HEAD << 8) | SYNCBYTE_NOCRC) /****************************************************************************/ struct TrackRec { struct MinNode tr_Link; ULONG tr_PacketType; struct Sana2PacketTypeStats tr_Sana2PacketTypeStats; }; /****************************************************************************/ typedef BOOL (* ASM BMFunc)(REG(a0) void *, REG(a1) void *, REG(d0) LONG); struct BufferManagement { struct MinNode bm_Node; BMFunc bm_CopyFromBuffer; BMFunc bm_CopyToBuffer; }; /****************************************************************************/ struct PLIPBase { struct Library pb_DevNode; /* basic device structure */ UBYTE pb_Unit; /* unit of 1st OpenDevice() */ UBYTE pb_pad1; /* make the following long alligned */ BPTR pb_SegList; /* pointer to code */ struct Library * pb_MiscBase, /* various libs & res. */ * pb_CIAABase, * pb_UtilityBase, * pb_TimerBase, * pb_DOSBase, * pb_SysBase; struct Process * pb_Server; /* main server proces */ struct Task * pb_Task; /* used for server shutdown */ struct Interrupt pb_Interrupt; /* for AddICRVector() */ ULONG pb_IntSig; /* sent from int to server */ ULONG pb_IntSigMask; /* for speed */ ULONG pb_ServerStoppedSigMask; /* for shutdown */ struct MsgPort * pb_ServerPort, /* for IOReq forwarding */ * pb_TimeoutPort, /* for timeout handling */ * pb_CollPort; /* for collision handling */ struct timerequest pb_TimeoutReq, /* for timeout handling */ pb_CollReq; /* for collision handling */ struct Sana2DeviceStats pb_DevStats; /* SANA-2 wants this */ volatile struct List pb_ReadList, /* the readers */ pb_WriteList, /* the writers */ pb_EventList, /* event tracking */ pb_ReadOrphanList, /* for spurious packets */ pb_TrackList, /* track type */ pb_BufferManagement; /* Copy-In/Out */ struct SignalSemaphore pb_EventListSem, /* protection for lists */ pb_ReadListSem, pb_WriteListSem, pb_TrackListSem, pb_ReadOrphanListSem, pb_Lock; ULONG pb_Retries; /* config values */ ULONG pb_ReportBPS; ULONG pb_MTU; ULONG pb_AllocFlags; ULONG pb_Timeout; LONG pb_CollisionDelay; LONG pb_ArbitrationDelay; volatile UBYTE pb_TimeoutSet;/* if != 0, a timeout occurred */ volatile UBYTE pb_Flags; /* see below */ APTR pb_OldExceptCode; APTR pb_OldExceptData; ULONG pb_OldExcept; UBYTE pb_HandshakeMask[2], /* crossed for side-a */ pb_HandshakeBit[2]; /* and side-b */ UBYTE pb_SrcAddr[PLIP_ADDRFIELDSIZE]; UBYTE pb_DstAddr[PLIP_ADDRFIELDSIZE]; volatile struct PLIPFrame pb_SendFrame, pb_ReceiveFrame; }; /* ** used as index for PLIPBase->pb_HandshakeMask[]/pb_HandshakeBit[] */ #define HS_LINE 0 /* as we use compatible plip wireing, our magic */ #define HS_REQUEST 1 /* is to cross the lines transparently by software */ #ifdef __SASC /* ** redirect all shared library bases to our device base. */ # define SysBase pb->pb_SysBase # define DOSBase pb->pb_DOSBase # define TimeBase pb->pb_TimeBase # define UtilityBase pb->pb_UtilityBase # define MiscBase pb->pb_MiscBase # define CIAABase pb->pb_CIAABase # define CiaBase pb->pb_CIAABase # define TimerBase pb->pb_TimerBase /* ** This macro declares a local variable which temporary gets ** SysBase directly from AbsExecBase. */ # define LOCALSYSBASE struct { void *pb_SysBase; } *pb = (void*)0x4 /* ** Use this macro as argument for all functions which need to ** have access to your data base. */ # define BASEPTR struct PLIPBase *pb #else # error Please define library bases for your compiler #endif /* ** Values for PLIPBase->pb_Flags ** Note that the Flags field is intentionally only 8 bits wide so that ** the ASM parts my use the bit functions. */ #define PLIPB_EXCLUSIVE 1 /* current opener is exclusive */ #define PLIPB_NOTCONFIGURED 2 /* not configured */ #define PLIPB_OFFLINE 3 /* currently not online (sic!) */ #define PLIPB_SENDCRC 4 /* send with CRC sum */ #define PLIPB_RECEIVING 5 /* set by interrupt */ #define PLIPB_COLLISION 6 /* arbitration detected a collision */ #define PLIPB_SERVERSTOPPED 7 /* set by server while passing away */ #define PLIPF_EXCLUSIVE (1<