AppleSCSITargetEmulator.h   [plain text]


/*
  File: AppleSCSITargetEmulator.h

  Contains:

  Version: 1.0.0

  Copyright: Copyright (c) 2007 by Apple Inc., All Rights Reserved.

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of these terms.  If you do not agree with these terms, please do not use, install, modify or 
redistribute this Apple software.

In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under Apple's
copyrights in this original Apple software (the "Apple Software"), to use, reproduce, 
modify and redistribute the Apple Software, with or without modifications, in source and/or
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and disclaimers in all such redistributions of the Apple Software.  Neither the
name, trademarks, service marks or logos of Apple Inc. may be used to
endorse or promote products derived from the Apple Software without specific prior
written permission from Apple.  Except as expressly stated in this notice, no
other rights or licenses, express or implied, are granted by Apple herein,
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The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO WARRANTIES, 
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE
OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. IN NO EVENT SHALL APPLE 
BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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*/


#ifndef __APPLE_SCSI_TARGET_EMULATOR_H__
#define __APPLE_SCSI_TARGET_EMULATOR_H__


//-----------------------------------------------------------------------------
//	Includes
//-----------------------------------------------------------------------------

#include <IOKit/IOMemoryDescriptor.h>
#include <IOKit/scsi/SCSITask.h>
#include <libkern/c++/OSArray.h>
#include <IOKit/IOLocks.h>
#include <IOKit/scsi/SCSICmds_REQUEST_SENSE_Defs.h>
#include <IOKit/scsi/SCSICmds_REPORT_LUNS_Definitions.h>
#include "AppleSCSIEmulatorDefines.h"


//-----------------------------------------------------------------------------
//	Constants
//-----------------------------------------------------------------------------

enum
{
	kTargetStateChangeActiveBit			= 0,
	kTargetStateChangeActiveWaitBit		= 1,
	
	kTargetStateChangeActiveMask		= (1 << kTargetStateChangeActiveBit),
	kTargetStateChangeActiveWaitMask	= (1 << kTargetStateChangeActiveWaitBit),
};


//-----------------------------------------------------------------------------
//	Class declaration
//-----------------------------------------------------------------------------

class AppleSCSITargetEmulator : public OSObject
{

	OSDeclareDefaultStructors ( AppleSCSITargetEmulator )

public:
	
	static AppleSCSITargetEmulator *	Create ( SCSITargetIdentifier targetID );
	
	inline SCSITargetIdentifier GetTargetID ( void ) { return fTargetID; }
	
	bool	Init ( SCSITargetIdentifier targetID );
	
	bool	AddLogicalUnit (
		SCSILogicalUnitNumber 	logicalUnitNumber,
		UInt64					capacity,
		IOMemoryDescriptor * 	inquiryBuffer,
		IOMemoryDescriptor * 	inquiryPage00Buffer,
		IOMemoryDescriptor * 	inquiryPage80Buffer,
		IOMemoryDescriptor * 	inquiryPage83Buffer );

	void	RemoveLogicalUnit ( SCSILogicalUnitNumber logicalUnitNumber );
	void	RebuildListOfLUNs ( void );
	
	void	free ( void );
	
#if USE_LUN_BYTES
	
	int SendCommand ( UInt8 *				cdb,
					  UInt8					cbdLen,
					  IOMemoryDescriptor * 	dataDesc,
					  UInt64 *				dataLen,
					  SCSILogicalUnitBytes	logicalUnitBytes,
					  SCSITaskStatus * 		scsiStatus,
					  SCSI_Sense_Data * 	senseBuffer,
					  UInt8 *				senseBufferLen );
	
#else
	
	int SendCommand ( UInt8 *				cdb,
					  UInt8					cbdLen,
					  IOMemoryDescriptor * 	dataDesc,
					  UInt64 *				dataLen,
					  SCSILogicalUnitNumber	logicalUnitNumber,
					  SCSITaskStatus * 		scsiStatus,
					  SCSI_Sense_Data * 	senseBuffer,
					  UInt8 *				senseBufferLen );

#endif	/* USE_LUN_BYTES */
	
	
	static SCSI_Sense_Data			sBadLUNSenseData;
	static SCSI_Sense_Data			sLUNInventoryChangedData;
	
	SCSITargetIdentifier 			fTargetID;
	SCSICmd_REPORT_LUNS_Header *	fLUNReportBuffer;
	UInt32							fLUNReportBufferSize;
	UInt32							fLUNDataAvailable;
	OSOrderedSet *					fLUNs;
	IOLock *						fLock;
	UInt32							fState;
	bool							fLUNInventoryChanged;
	
};


#endif	/* __APPLE_SCSI_TARGET_EMULATOR_H__ */