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magplip.h
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C/C++ Source or Header
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1996-02-26
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11KB
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305 lines
#ifndef __MAGPLIP_H
#define __MAGPLIP_H
/*
** $VER: magplip.h 1.11 (30 Dec 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:
**
** 30 Dec 1995 : 001.011 : + single dynamic frame buffer
** + added a lot of min/max constants
** 29 Dec 1995 : 001.010 : + pb_Startup
** + new flag PLIPF_REPLYSS
** 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 <devices/sana2.h>
#endif
#ifndef EXEC_SEMAPHORES_H
#include <exec/semaphores.h>
#endif
#ifndef EXEC_LISTS_H
#include <exec/lists.h>
#endif
#ifndef EXEC_INTERRUPTS_H
#include <exec/interrupts.h>
#endif
#ifndef EXEC_LIBRARIES_H
#include <exec/libraries.h>
#endif
#ifndef DOS_DOS_H
#include <dos/dos.h>
#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
/* minimum values */
#define PLIP_MINPRIORITY -128
#define PLIP_MINMTU 256
#define PLIP_MINRETRIES 1
#define PLIP_MINCOLLISIONDELAY 0
#define PLIP_MINARBITRATIONDELAY 0
#define PLIP_MINTIMEOUT 500
#define PLIP_MINBPS 1
/* maximum values */
#define PLIP_MAXMTU (128 * 1024)
#define PLIP_MAXRETRIES 127 /* don't try higher values! */
#define PLIP_MAXPRIORITY 127
#define PLIP_MAXCOLLISIONDELAY 999999
#define PLIP_MAXARBITRATIONDELAY 999999
#define PLIP_MAXTIMEOUT 999999
#define PLIP_MAXBPS 0x7fffffff
/* magPLIPs hardware address: log2(two systems) = 1 */
#define PLIP_ADDRFIELDSIZE 1
/****************************************************************************/
/* this _is_ awful, I know */
#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[MTU];*/
};
#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;
};
/****************************************************************************/
/*
** sent to the server task after being CreateNewProc()ed
*/
struct ServerStartup
{
struct Message ss_Msg;
struct PLIPBase *ss_PLIPBase;
BOOL ss_Error;
UBYTE ss_Pad[2];
};
/****************************************************************************/
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 ServerStartup * pb_Startup; /* main server proces */
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];
struct PLIPFrame * pb_Frame;
};
/*
** 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 PLIPB_REPLYSS 8 /* server-startup must be replied */
#define PLIPF_EXCLUSIVE (1<<PLIPB_EXCLUSIVE)
#define PLIPF_NOTCONFIGURED (1<<PLIPB_NOTCONFIGURED)
#define PLIPF_OFFLINE (1<<PLIPB_OFFLINE)
#define PLIPF_SENDCRC (1<<PLIPB_SENDCRC)
#define PLIPF_RECEIVING (1<<PLIPB_RECEIVING)
#define PLIPF_COLLISION (1<<PLIPB_COLLISION)
#define PLIPF_SERVERSTOPPED (1<<PLIPB_SERVERSTOPPED)
#define PLIPF_REPLYSS (1<<PLIPB_REPLYSS)
/****************************************************************************/
/*
** configuration stuff
*/
#define CONFIGFILE "ENV:SANA2/magPLIP.config"
#define TEMPLATE "TIMEOUT/K/N,PRIORITY=PRI/K/N,MTU/K/N,BPS/K/N,RETRIES/K/N,SENDCRC/S,CD=COLLISIONDELAY/K/N,AD=ARBITRATIONDELAY/K/N"
struct PLIPConfig
{
ULONG *timeout;
LONG *priority;
LONG *mtu;
LONG *bps;
LONG *retries;
ULONG sendcrc;
LONG *collisiondelay;
LONG *arbitrationdelay;
};
#endif