/*-
 *  $Id: device.h,v 1.56 1996/12/21 23:45:39 Rhialto Rel $
 *  $Log: device.h,v $
 * Revision 1.56  1996/12/21  23:45:39  Rhialto
 * Bump revision number to 16.
 *
 * Revision 1.56  1996/12/21  23:34:35  Rhialto
 * No changes.
 *
 * Revision 1.55  1993/12/30  22:45:10  Rhialto
 * Variable DMA buffer size for DD/DH disks.
 *
 * Revision 1.54  1993/06/24  04:56:00	Rhialto
 * DICE 2.07.54R.
 *
 * Revision 1.53  92/10/25  02:17:40  Rhialto
 * Rearrange #inclusions and Device structure.
 * Add TD_Getgeometry, TD_Eject.
 *
 * Revision 1.51  92/04/17  15:43:10  Rhialto
 * Freeze for MAXON3. Change cyl+side units to track units.
 *
 * Revision 1.46  91/10/06  18:25:45  Rhialto
 *
 * Freeze for MAXON
 *
 * Revision 1.42  91/06/14  00:07:33  Rhialto
 * DICE conversion
 *
 * Revision 1.40  91/03/03  17:56:47  Rhialto
 * Freeze for MAXON
 *
 * Revision 1.34  91/01/24  00:13:57  Rhialto
 * Use TD_RAWWRITE under AmigaOS 2.0.
 *
 * Revision 1.30  90/06/04  23:19:28  Rhialto
 * Release 1 Patch 3
 *
 *  This code is (C) Copyright 1989-1993 by Olaf Seibert. All rights reserved.
 *  May not be used or copied without a licence.
-*/

#ifndef RESOURCES_DISK_H
#include "resources/disk.h"
#endif
#ifndef RESOURCES_CIA_H
#include "resources/cia.h"
#endif
#ifndef HARDWARE_CIA_H
#include "hardware/cia.h"
#endif
#ifndef HARDWARE_CUSTOM_H
#include "hardware/custom.h"
#endif
#ifndef HARDWARE_ADKBITS_H
#include "hardware/adkbits.h"
#endif
#ifndef HARDWARE_DMABITS_H
#include "hardware/dmabits.h"
#endif
#ifndef HARDWARE_INTBITS_H
#include "hardware/intbits.h"
#endif
#ifndef EXEC_DEVICES_H
#include <exec/devices.h>
#endif
#ifndef EXEC_SEMAPHORES_H
#include "exec/semaphores.h"
#endif
#ifndef CLIB_EXEC_PROTOS_H
#include <clib/exec_protos.h>
#endif
#ifndef CLIB_ALIB_PROTOS_H
#include <clib/alib_protos.h>
#endif

#ifndef MESSYDISK_DEV_H
#include "dev.h"
#endif

extern struct ExecBase *SysBase;

#define MD_NUMUNITS	4
#ifndef NUMHEADS
#define NUMHEADS	2   /* Used to be in devices/trackdisk.h */
#endif
#define TRACKS(cyls)    ((cyls) * NUMHEADS)
#define TRK2CYL(track)  ((track) >> 1)
#define TRK2SIDE(track) ((track) & 1)

#define VERSION 	SYS2_04
#define REVISION	16

struct MessyDevice {
    struct Device   md_Dev;
    struct MessyUnit *md_Unit[MD_NUMUNITS];
    long	    md_Seglist;
    long	    md_System_2_04;
    struct SignalSemaphore md_HardwareUse;
    long	    md_RawbufferSize;
    byte	   *md_Rawbuffer;
    byte	    md_MfmDecode[128];
};

#define dev_Node	md_Dev.dd_Library.lib_Node
#define dev_Flags	md_Dev.dd_Library.lib_Flags
#define dev_NegSize	md_Dev.dd_Library.lib_NegSize
#define dev_PosSize	md_Dev.dd_Library.lib_PosSize
#define dev_Version	md_Dev.dd_Library.lib_Version
#define dev_Revision	md_Dev.dd_Library.lib_Revision
#define dev_IdString	md_Dev.dd_Library.lib_IdString
#define dev_OpenCnt	md_Dev.dd_Library.lib_OpenCnt

struct MessyUnit {
    struct MsgPort  mu_Port;
    short	    mu_OpenCnt;
    short	    mu_UnitNr;
    byte	    mu_Flags;
    char	    mu_InitSectorStatus;
    ulong	    mu_ChangeNum;
    ulong	    mu_OpenFlags;
    byte	    mu_DiskState;
    byte	    mu_DmaSignal;
    short	    mu_SectorsPerTrack; /* The nominal #sectors/track */
    short	    mu_CurrentSectors;	/* The current #sectors on this track */
    short	    mu_CurrentTrack;	/* what's in the track buffer */
    short	    mu_NumTracks;
    short	    mu_TrackChanged;
    short	    mu_ReadLen; 	/* 1 track + ~1 sector */
    short	    mu_WriteLen;	/* ~1 track */
    struct DiskResourceUnit mu_DRUnit;
    struct MsgPort  mu_DiskReplyPort;
    struct IOExtTD *mu_DiskIOReq;
    struct IOStdReq *mu_DiskChangeReq;
    struct Interrupt mu_DiskChangeInt;
    struct MinList  mu_ChangeIntList;
    byte	   *mu_TrackBuffer;
    char	    mu_SectorStatus[MS_SPT_MAX];
    word	    mu_CrcBuffer[MS_SPT_MAX];
};

#define     TDERR_NoError   0
#define     CRC_UNCHECKED   -1
#define     CRC_CHANGED     -2

#define UNITB_ACTIVE	0
#define UNITF_STOPPED	(1<<2)
#define UNITF_WAKETASK	(1<<3)

#define STATEF_UNKNOWN	(1<<0)
#define STATEF_PRESENT	(1<<1)
#define STATEF_WRITABLE (1<<2)
#define STATEF_HIGHDENSITY (1<<3)

#define SYS1_2		33	/* System version 1.2 */
#define SYS1_3		34	/* System version 1.3 */
#define SYS2_0		36	/* System version 2.0 */
#define SYS2_04 	37	/* System version 2.04 */

typedef struct MessyDevice DEV;
typedef struct MessyUnit   UNIT;


#define TASKPRI     5L
#define TASKSTACK   1024L

/*
 *  Which of the device commands are real, and which are
 *  routed to trackdisk.device.
 */

/*  #define CMD_Invalid     */
/*  #define CMD_Reset	    */
/*  #define CMD_Read	    */
/*  #define CMD_Write	    */
/*  #define CMD_Update	    */
/*  #define CMD_Clear	    */
/*  #define CMD_Stop	    */
/*  #define CMD_Start	    */
/*  #define CMD_Flush	    */
    #define TD_Motor	    TrackdiskGateway
/*  #define TD_Seek	    */
/*  #define TD_Format	    */
    #define TD_Remove	    TrackdiskGateway
/*  #define TD_Changenum    */
    #define TD_Changestate  TrackdiskGateway
    #define TD_Protstatus   TrackdiskGateway
    #define TD_Rawread	    TrackdiskGateway
    #define TD_Rawwrite     TrackdiskGateway
    #define TD_Getdrivetype TrackdiskGateway
    #define TD_Getnumtracks TrackdiskGateway
/*  #define TD_Addchangeint */
/*  #define TD_Remchangeint */
/*  #define TD_Getgeometry  */
    #define TD_Eject	    TrackdiskGateway

#define STRIP(cmd)  ((unsigned char)cmd)
#define IMMEDIATE   ((1<<CMD_INVALID)|(1<<CMD_RESET)|\
		     (1<<CMD_STOP)|(1<<CMD_START)|(1<<CMD_FLUSH)|\
		     (1L<<TD_ADDCHANGEINT))
#define PerformIO(ioreq, unit) \
		    (funcTable[STRIP(ioreq->io_Command)])(ioreq, unit)

struct DiskResourceUnit *GetUnit(__A1 struct DiskResourceUnit *);
void GiveUnit(void);

#define Prototype extern
#define Local	  static

/*
 *  Prototypes:
 */

#include "devproto.h"