wdmeppdevice.cpp

这是VC编写的并口驱动

// WDMEPPDevice.cpp
// Implementation of WDMEPPDevice device class
//
// Generated by DriverWizard version DriverStudio 2.6.0 (Build 336)
// Requires Compuware's DriverWorks classes
//

#pragma warning(disable:4065) // Allow switch statement with no cases
		  
#include <vdw.h>
#include "..\WDMEPPDeviceinterface.h"

#include "WDMEPP.h"
#include "WDMEPPDevice.h"
#include "..\WDMEPPioctl.h"

#pragma hdrstop("WDMEPP.pch")

extern KTrace t;			// Global driver trace object	

GUID WDMEPPDevice_Guid = WDMEPPDevice_CLASS_GUID;

////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::WDMEPPDevice
//
//	Routine Description:
//		This is the constructor for the Functional Device Object, or FDO.
//		It is derived from KPnpDevice, which builds in automatic
//	    dispatching of subfunctions of IRP_MJ_POWER and IRP_MJ_PNP to
//		virtual member functions.
//
//	Parameters:
//		Pdo - Physical Device Object - this is a pointer to a system
//			device object that represents the physical device.
//
//		Unit - Unit number. This is a number to append to the device's
//			base device name to form the Logical Device Object's name
//
//	Return Value:
//		None   
//
//	Comments:
//		The object being constructed contains a data member (m_Lower) of type
//		KPnpLowerDevice. By initializing it, the driver binds the FDO to the
//		PDO and creates an interface to the upper edge of the system class driver.
//

WDMEPPDevice::WDMEPPDevice(PDEVICE_OBJECT Pdo, ULONG Unit) :
	KPnpDevice(Pdo, &WDMEPPDevice_Guid)
{
	t << "Entering WDMEPPDevice::WDMEPPDevice (constructor)\n";


	// Check constructor status
    if ( ! NT_SUCCESS(m_ConstructorStatus) )
	{
	    return;
	}

	// Remember our unit number
	m_Unit = Unit;

	// Initialize the lower device
	m_Lower.Initialize(this, Pdo);
    m_DeviceIos.Initialize(EPP_BASE_ADDR,true,7,TRUE);
	// Map to system space

    // Inform the base class of the lower edge device object
	SetLowerDevice(&m_Lower);

	// Initialize the PnP Policy settings to the "standard" policy
	SetPnpPolicy();

// TODO:	Customize the PnP Policy for this device by setting
//			flags in m_Policies.

	// Initialize the Power Policy settings to the "standard" policy
	SetPowerPolicy();

// TODO:	Customize the Power Policy for this device by setting
//			flags in m_PowerPolicies.

}


////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::~WDMEPPDevice
//
//	Routine Description:
//		This is the destructor for the Functional Device Object, or FDO.
//
//	Parameters:
//		None
//
//	Return Value:
//		None
//
//	Comments:
//		None
//

WDMEPPDevice::~WDMEPPDevice()
{
	t << "Entering WDMEPPDevice::~WDMEPPDevice() (destructor)\n";
}

////////////////////////////////////////////////////////////////////////
//  PNPMinorFunctionName
//
//	Routine Description:
//		Return a string describing the Plug and Play minor function	
//
//	Parameters:
//		mn - Minor function code
//
//	Return Value:
//		char * - Ascii name of minor function
//
//	Comments:
//		This function is used for tracing the IRPs.  Remove the function,
//		or conditionalize it for debug-only builds, if you want to save
//		space in the driver image.
//
	
char *PNPMinorFunctionName(ULONG mn)
{
	static char* minors[] = {
		"IRP_MN_START_DEVICE",
		"IRP_MN_QUERY_REMOVE_DEVICE",
		"IRP_MN_REMOVE_DEVICE",
		"IRP_MN_CANCEL_REMOVE_DEVICE",
		"IRP_MN_STOP_DEVICE",
		"IRP_MN_QUERY_STOP_DEVICE",
		"IRP_MN_CANCEL_STOP_DEVICE",
		"IRP_MN_QUERY_DEVICE_RELATIONS",
		"IRP_MN_QUERY_INTERFACE",
		"IRP_MN_QUERY_CAPABILITIES",
		"IRP_MN_QUERY_RESOURCES",
		"IRP_MN_QUERY_RESOURCE_REQUIREMENTS",
		"IRP_MN_QUERY_DEVICE_TEXT",
		"IRP_MN_FILTER_RESOURCE_REQUIREMENTS",
		"<unknown minor function>",
		"IRP_MN_READ_CONFIG",
		"IRP_MN_WRITE_CONFIG",
		"IRP_MN_EJECT",
		"IRP_MN_SET_LOCK",
		"IRP_MN_QUERY_ID",
		"IRP_MN_QUERY_PNP_DEVICE_STATE",
		"IRP_MN_QUERY_BUS_INFORMATION",
		"IRP_MN_DEVICE_USAGE_NOTIFICATION",
		"IRP_MN_SURPRISE_REMOVAL"
	};

	if (mn > IRP_MN_SURPRISE_REMOVAL) 
		return "<unknown minor function>";
	else
		return minors[mn];
}

////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::DefaultPnp
//
//	Routine Description:
//		Default handler for IRP_MJ_PNP
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result returned from lower device
//
//	Comments:
//		This routine just passes the IRP through to the lower device. It is 
//		the default handler for IRP_MJ_PNP. IRPs that correspond to
//		any virtual members of KpnpDevice that handle minor functions of
//		IRP_MJ_PNP and that are not overridden get passed to this routine.
//

NTSTATUS WDMEPPDevice::DefaultPnp(KIrp I) 
{
	t << "Entering WDMEPPDevice::DefaultPnp with IRP minor function="
	  << PNPMinorFunctionName(I.MinorFunction()) << EOL;

	I.ForceReuseOfCurrentStackLocationInCalldown();
	return m_Lower.PnpCall(this, I);
}


////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::DefaultPower
//
//	Routine Description:
//		Default handler for IRP_MJ_POWER 
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result returned from lower device
//
//	Comments:
//		This routine just passes the IRP through to the lower device. It is 
//		the default handler for IRP_MJ_POWER.
//

NTSTATUS WDMEPPDevice::DefaultPower(KIrp I) 
{
	t << "Entering WDMEPPDevice::DefaultPower\n";

	I.IndicatePowerIrpProcessed();
	I.CopyParametersDown();
	return m_Lower.PnpPowerCall(this, I);
}

////////////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::SystemControl
//
//	Routine Description:
//		Default handler for IRP_MJ_SYSTEM_CONTROL
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result returned from lower device
//
//	Comments:
//		This routine just passes the IRP through to the next device since this driver
//		is not a WMI provider.
//

NTSTATUS WDMEPPDevice::SystemControl(KIrp I) 
{
	t << "Entering WDMEPPDevice::SystemControl\n";

	I.ForceReuseOfCurrentStackLocationInCalldown();
	return m_Lower.PnpCall(this, I);
}

////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::OnStartDevice
//
//	Routine Description:
//		Handler for IRP_MJ_PNP subfcn IRP_MN_START_DEVICE
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result code
//
//	Comments:
//		Initialize the physical device. Typically, the driver initializes
//		physical resources here.  Call I.AllocatedResources() for a list
//		of the raw resources that the system has assigned to the device,
//		or I.TranslatedResources() for the translated resource list.
//

NTSTATUS WDMEPPDevice::OnStartDevice(KIrp I)
{
	t << "Entering WDMEPPDevice::OnStartDevice\n";

	NTSTATUS status = STATUS_SUCCESS;

	I.Information() = 0;

	// The default Pnp policy has already cleared the IRP with the lower device
	// Initialize the physical device object.

	// Get the list of raw resources from the IRP
	PCM_RESOURCE_LIST pResListRaw = I.AllocatedResources();
	// Get the list of translated resources from the IRP
	PCM_RESOURCE_LIST pResListTranslated = I.TranslatedResources();

// TODO:	Add device-specific code to start your device.

    // The base class will handle completion

	return status;
}


////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::OnStopDevice
//
//	Routine Description:
//		Handler for IRP_MJ_PNP subfcn IRP_MN_STOP_DEVICE
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result code
//
//	Comments:
//		The system calls this when the device is stopped.
//		The driver should release any hardware resources
//		in this routine.
//
//		The base class passes the irp to the lower device.
//

NTSTATUS WDMEPPDevice::OnStopDevice(KIrp I)
{
	NTSTATUS status = STATUS_SUCCESS;

	t << "Entering WDMEPPDevice::OnStopDevice\n";


// TODO:	Add device-specific code to stop your device   

	return status;
	
	// The following macro simply allows compilation at Warning Level 4
	// If you reference this parameter in the function simply remove the macro.
	UNREFERENCED_PARAMETER(I);
}

////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::OnRemoveDevice
//
//	Routine Description:
//		Handler for IRP_MJ_PNP subfcn IRP_MN_REMOVE_DEVICE
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result code
//
//	Comments:
//		The system calls this when the device is removed.
//		Our PnP policy will take care of 
//			(1) giving the IRP to the lower device
//			(2) detaching the PDO
//			(3) deleting the device object
//

NTSTATUS WDMEPPDevice::OnRemoveDevice(KIrp I)
{
	t << "Entering WDMEPPDevice::OnRemoveDevice\n";




// TODO:	Add device-specific code to remove your device   

	return STATUS_SUCCESS;

	// The following macro simply allows compilation at Warning Level 4
	// If you reference this parameter in the function simply remove the macro.
	UNREFERENCED_PARAMETER(I);
}

////////////////////////////////////////////////////////////////////////
//  WDMEPPDevice::OnDevicePowerUp
//
//	Routine Description:
//		Handler for IRP_MJ_POWER with minor function IRP_MN_SET_POWER
//		for a request to go to power on state from low power state
//
//	Parameters:
//		I - IRP containing POWER request
//
//	Return Value: