/*

File:SCSIEmulatorAdapterNub.cpp

Abstract: Implementation of 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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*/

#include <IOKit/IOLib.h>

#include <IOKit/IOMessage.h>

#include <IOKit/IODeviceTreeSupport.h>

#include "SCSIEmulatorAdapterNub.h"

// Define my superclass

#define super IOService

// REQUIRED! This macro defines the class's constructors, destructors,

// and several other methods I/O Kit requires. Do NOT use super as the

// second parameter. You must use the literal name of the superclass.

OSDefineMetaClassAndStructors(com_apple_dts_SCSIEmulatorAdapterNub, IOService)

bool

com_apple_dts_SCSIEmulatorAdapterNub::init(com_apple_dts_SCSIEmulator *adapter, OSDictionary *dict)

{

    bool res = super::init(dict);

    mEmulator = adapter;

    return res;

}

// Only present to provide a debug checkpoint

void

com_apple_dts_SCSIEmulatorAdapterNub::free(void)

{

    super::free();

}

bool

com_apple_dts_SCSIEmulatorAdapterNub::start( IOService *provider )

{

    bool res = super::start(provider);

    if (res) {

        registerService(kIOServiceSynchronous);

    }

    return res;

}

// Only present to provide a debug checkpoint

void

com_apple_dts_SCSIEmulatorAdapterNub::stop( IOService *provider )

{

    super::stop(provider);

}

// Only present to provide a debug checkpoint

IOReturn

com_apple_dts_SCSIEmulatorAdapterNub::message(UInt32 type, IOService *provider, void *argument)

{

    IOReturn ret = super::message(type, provider, argument);

    return ret;

}

// Only present to provide a debug checkpoint

bool com_apple_dts_SCSIEmulatorAdapterNub::willTerminate(IOService *provider, IOOptionBits options)

{

    return super::willTerminate(provider, options);

}

// Only present to provide a debug checkpoint

bool com_apple_dts_SCSIEmulatorAdapterNub::didTerminate(IOService *provider, IOOptionBits options, bool *defer)

{

    return super::didTerminate(provider, options, defer);

}

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

IOReturn

com_apple_dts_SCSIEmulatorAdapterNub::getInterruptType(int source, int *interruptType)

{

    *interruptType = kIOInterruptTypeEdge;

    return kIOReturnSuccess;

}

IOReturn

com_apple_dts_SCSIEmulatorAdapterNub::registerInterrupt(int source, OSObject *target,

                      IOInterruptAction handler,

                      void *refCon)

{

    return kIOReturnSuccess;

}

IOReturn

com_apple_dts_SCSIEmulatorAdapterNub::unregisterInterrupt(int source)

{

    return kIOReturnSuccess;

}

#endif

com_apple_dts_SCSIEmulator *

com_apple_dts_SCSIEmulatorAdapterNub::getEmulator(com_apple_dts_SCSIEmulatorAdapter *adapter, SCSITargetIdentifier targetID)

{

    // Although this example only creates one target and one adapter, you could modify it to create multiple adapters

    // with multiple targets

    if (targetID == 0) {

        return mEmulator;

    } else {

        return NULL;

    }

}