/*

File:SCSIEmulatorAdapterNub.h

Abstract: Header for the IOKit nub used to match our SCSI HBA emulator

        against and to provide the necessary patch to support a virtual HBA

Version: 1.0

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*/

// IOSCSIParallelInterfaceController, for whatever reasons, demands that we have a primary interrupt

// in our provider chain.  This is a simple class to provide that support but in software instead

#ifndef _SCSIEMULATORADAPTER_NUB_H

#define _SCSIEMULATORADAPTER_NUB_H

#include <IOKit/IOService.h>

#include <IOKit/scsi/SCSITask.h>

class com_apple_dts_SCSIEmulator;

class com_apple_dts_SCSIEmulatorAdapter;

class com_apple_dts_SCSIEmulatorAdapterNub : public IOService {

OSDeclareDefaultStructors(com_apple_dts_SCSIEmulatorAdapterNub)

public:

    virtual bool                init(com_apple_dts_SCSIEmulator *adapter = 0, OSDictionary *dict = 0);

    virtual void                free(void);

    virtual bool                start(IOService *provider);

    virtual void                stop(IOService *provider);

    virtual IOReturn            message(UInt32 type, IOService * provider,

                                        void * argument = 0);

    virtual bool                willTerminate(IOService *provider, IOOptionBits options);

    virtual bool                didTerminate(IOService *provider, IOOptionBits options, bool *defer);

#if 1 // Work-around for bug in IOSCSIParallelFamily.  Radar:4914537

    virtual IOReturn            getInterruptType(int source, int *interruptType);

    virtual IOReturn            registerInterrupt(int source, OSObject *target,

                                        IOInterruptAction handler,

                                        void *refCon = 0);

    virtual IOReturn            unregisterInterrupt(int source);

#endif

    com_apple_dts_SCSIEmulator *getEmulator(com_apple_dts_SCSIEmulatorAdapter *adapter, SCSITargetIdentifier targetID);

private:

    com_apple_dts_SCSIEmulator *mEmulator;

};

#endif