/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
	Copyright (c) 2000-2001 Palm, Inc. or its subsidiaries.
	All rights reserved.

	This file is part of the Palm OS Emulator.

	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.
\* ===================================================================== */

#ifndef EmTRGCFIO_h
#define EmTRGCFIO_h

#include "EmTRGCFDefs.h"
#include "EmTRGDiskType.h"
#include "EmTRGDiskIO.h"

#include <stdio.h>				// FILE

#define DISKFILE_NAME  "trgdrv.dat"

typedef struct {
	uint32            DriveNum;
	LogicalBlockAddr  Lba;
	uint32            SectorCnt;
} DiskIOParams; 

typedef enum {
	DIO_SUCCESS     = 0,
	DIO_ERROR       = 1
} DiskIOStatus;

typedef enum {
	DIO_DATA_COMPLETE   = 0,
	DIO_MORE_DATA       = 1
} DiskDataStatus;

//typedef enum {
//	DIO_ERR_NONE    = 0,
//	DIO_ERR_GENERIC = 1
//} DiskIOError;
typedef uint8 DiskIOError;

typedef struct {
	LogicalBlockAddr	Lba;
	uint32			NumSectorsRequested;
	uint32			NumSectorsCompleted;
	EmSector		Sector;
	int             SectorIndex;
	DiskIOStatus	Status;
	DiskIOError     Error;
} DiskIOState; 

class EmCFIO 
{
public:
				    EmCFIO		(void);
    virtual		    ~EmCFIO		(void);

	// EmRegs overrides
	void			Initialize(EmDiskTypeID DiskTypeID);
	void			Dispose(void);
	void            Reset(void);
	void			StartDriveID(void);
	void			ReadNextDataByte(uint8 * val);
	void			WriteNextDataByte(uint8 val);
	uint32			GetSectorCount(void);
	void			StartRead(DiskIOParams * params);
	void			StartWrite(DiskIOParams * params);
	void			GetStatus(DiskIOStatus *   status,
				              DiskDataStatus * dataStatus);
	DiskIOError  	GetError(void);
    void            SetError(DiskIOError error);
    void            ClearError(void);

private:
	EmDiskTypeID	DiskTypeID;
	EmCurrDiskType	CurrDisk;
	DiskIOStatus	WriteSector(void);
	DiskIOStatus	ReadSector(void);
	void			CloseFile(void);
	DiskIOState		State;

    EmTRGDiskIO     DiskIO;
};

#endif	/* EmTRGCFIO_h */