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rhslip38_9_030.lha
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rhslip
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slip_device.h
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C/C++ Source or Header
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1994-01-26
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6KB
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215 lines
/*
** $Source: /m/lerppu/u3/projects/Dec93/ohtatcp/amitcp/src/devs/rhslip/RCS/slip_device.h,v $
** $State: Exp $
** $Revision: 37.3 $
** $Date: 1994/01/03 19:44:48 $
** $Author: ppessi $
**
** SANA-II Example device driver C include file
**
** (C) Copyright 1992 Commodore-Amiga, Inc.
*/
#include <exec/types.h>
#include <exec/devices.h>
#include <exec/ports.h>
#include <exec/semaphores.h>
#include <exec/memory.h>
#include <dos.h>
#include "devices/sana2.h"
#include <devices/serial.h>
/*
** Choose here if you want slip or compressed slip
*/
#ifndef CSLIP
#define CSLIP 1
#endif
#if CSLIP
#include "cslip.h"
#else
#define MAX_HDR 0
#endif
/*
** Stacksize and Priority of the Unit Process
*/
#define SLIP_STACKSIZE 4000
#define SLIP_PRI 5
/*
** Maximum Transmission Unit
*/
#define SLIP_MTU 1006
#define BUF_SLOP 4
/*
** Max # of Units allowed
*/
#define SD_MAXUNITS 8
/*
** Message passed to the Unit Process at
** startup time.
*/
struct StartupMessage
{
struct Message Msg;
struct Unit *Unit;
struct Device *Device;
};
/*
** Device Data Structure
*/
struct SLIPDevice
{
struct Library sd_Device;
UBYTE sd_Flags;
UBYTE sd_Pad1;
struct Library *sd_SysBase;
struct Library *sd_DOSBase;
ULONG sd_DosTag[10];
BPTR sd_SegList;
struct Unit *sd_Units[SD_MAXUNITS];
struct SignalSemaphore sd_Lock;
struct StartupMessage sd_Startup;
};
/*
** Typedef's for the SANA-II callback functions.
** Rhialto: It would be nice to specify the registers explicitly,
** instead of hoping the compiler options include ARGS=REGS, and that
** the compiler selected registers would match the requirements.
*/
#ifdef __SASC
#define ASM __asm
#define REG(x) register __ ## x
#else
#error Please define ASM and REG for your compiler
#endif
typedef BOOL (*ASM SANA2_CFB)(REG(a0) APTR to, REG(a1) APTR from, REG(d0) LONG length);
typedef BOOL (*ASM SANA2_CTB)(REG(a0) APTR to, REG(a1) APTR from, REG(d0) LONG length);
struct BufferManagement
{
struct MinNode bm_Node;
SANA2_CFB bm_CopyFromBuffer;
SANA2_CTB bm_CopyToBuffer;
};
struct SuperS2PTStats
{
struct MinNode ss_Node;
ULONG ss_PType;
struct Sana2PacketTypeStats ss_Stats;
};
/*
** Unit Data Structure
*/
struct SLIPDevUnit
{
struct Unit sdu_Unit; /* Standard Unit Structure */
UBYTE sdu_UnitNum; /* Unit number */
UBYTE sdu_Reserved0; /* Padding */
struct Device *sdu_Device; /* Pointer to our device node */
ULONG sdu_StAddr; /* Our current address */
ULONG sdu_HwAddr; /* Our "hardware" address (Rhialto)*/
ULONG sdu_BaudRate; /* Serial baud rate */
ULONG sdu_SerUnitNum; /* Serial driver unit number */
WORD sdu_MTU; /* Maximum Transfer Unit */
BOOL sdu_Escape; /* SLIP Decode state */
ULONG sdu_State; /* Various state information */
struct IOExtSer *sdu_SerRx; /* Serial IORequest for CMD_READ's */
struct IOExtSer *sdu_SerTx; /* Serial IORequest for CMD_WRITE's */
struct MsgPort *sdu_RxPort; /* Serial CMD_READ IORequest reply port */
struct MsgPort *sdu_TxPort; /* Serial CMD_WRITE IORequest reply port */
UBYTE *sdu_RxBuff; /* Buffer for holding decoded packets */
UBYTE *sdu_RxBuffPtr; /* Current place in decode buffer */
UBYTE *sdu_TxBuff; /* Temporary buffer for hold unencoded outgoing packets */
UBYTE *sdu_RxSLIP; /* Two buffers that hold packets encoded */
UBYTE *sdu_TxSLIP; /* in SLIP format. */
struct Process *sdu_Proc; /* NB: This points to the Task, not the MsgPort */
struct SignalSemaphore sdu_ListLock; /* A Semaphore for access to all of our queues. */
struct MinList sdu_Rx; /* Pending CMD_READ's */
struct MinList sdu_RxOrph; /* Pending CMD_READORPHAN's */
struct MinList sdu_Tx; /* Pending CMD_WRITE's */
struct MinList sdu_Events; /* Pending S2_ONEVENT's */
struct SuperS2PTStats *sdu_IPTrack; /* For tracking IP packets */
struct MinList sdu_Track; /* List of packet types being tracked */
struct MinList sdu_BuffMgmt; /* List of Callback routines */
struct Sana2DeviceStats sdu_Stats; /* Global device statistics */
UBYTE sdu_SerDevName[32]; /* Name of the serial driver to use */
#if CSLIP
struct slcompress sdu_slcompress;
#endif
};
/*
** State bits for sdu_State
*/
#define SLIPUB_CONFIG 0
#define SLIPUB_ONLINE 1
#define SLIPUB_SETCONFIG 2
#define SLIPUB_CD 3
#define SLIPUB_EXCLUSIVE 4
#define SLIPUB_7WIRE 5
#define SLIPUB_EOFMODE 6
#define SLIPUF_CONFIG (1<<SLIPUB_CONFIG)
#define SLIPUF_ONLINE (1<<SLIPUB_ONLINE)
#define SLIPUF_SETCONFIG (1<<SLIPUB_SETCONFIG)
#define SLIPUF_CD (1<<SLIPUB_CD)
#define SLIPUF_EXCLUSIVE (1<<SLIPUB_EXCLUSIVE)
#define SLIPUF_7WIRE (1<<SLIPUB_7WIRE)
#define SLIPUF_EOFMODE (1<<SLIPUB_EOFMODE)
/*
** Some serial parameters
*/
#define SLIP_SERIAL_BUFSIZE (16384L)
/*
** Device Name
*/
#if CSLIP
#define SLIPDEVNAME "rhcslip.device"
#else
#define SLIPDEVNAME "rhslip.device"
#endif
extern char SLIPName[];
/*
** Packet Encoding Bytes
*/
#define SLIP_END 192
#define SLIP_ESC 219
#define SLIP_ESC_END 220
#define SLIP_ESC_ESC 221
/*
** Compiler Magic
**
** (Rhialto) This is terrible!!! That people write code like this!
** How can you be sure the compiler won't use A6 for a register variable
** somewhere and make it unusable in the functions that it calls?
** (in fact, SAS/C 6.2 does something that, in ReadConfig..., when it
** first calls an Exec function and then a DOS function)
*/
#ifdef notdef
#define SLIPBase ((struct SLIPDevice *)__builtin_getreg(14)) /* Avoid the pre-processor problem */
#else
#define SLIPBase ExtDeviceBase
#endif
#define SysBase (SLIPBase->sd_SysBase)
#define DOSBase (SLIPBase->sd_DOSBase)