pwmdrvdevice.cpp

D12的USB驱动代码

// PWMDrvDevice.cpp
// Implementation of PWMDrvDevice 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 <kusb.h>
#include "..\PWMDrvDeviceinterface.h"

#include "PWMDrv.h"
#include "PWMDrvDevice.h"
#include "..\PWMDrvioctl.h"

#pragma hdrstop("PWMDrv.pch")

extern KTrace t;			// Global driver trace object	

GUID PWMDrvDevice_Guid = PWMDrvDevice_CLASS_GUID;

////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::PWMDrvDevice
//
//	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.
//

PWMDrvDevice::PWMDrvDevice(PDEVICE_OBJECT Pdo, ULONG Unit) :
	KPnpDevice(Pdo, &PWMDrvDevice_Guid)
{
	t << "Entering PWMDrvDevice::PWMDrvDevice (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);

	// Initialize the interface object.  The wizard generates code 
	// to support a single interface.  You may create and add additional 
	// interfaces.  By default, the wizard uses InterfaceNumber 0 (the 
	// first interface descriptor), ConfigurationValue 1 (the first
	// configuration descriptor), and initial interface alternate
	// setting of 0.  If your device has multiple interfaces or alternate
	// settings for an interface, you can add additional KUsbInterface
	// objects or adjust the parameters passed to this function.
	m_Interface.Initialize(
					m_Lower, //KUsbLowerDevice
					0,		 //InterfaceNumber
					1,		 //ConfigurationValue 
					0		 //Initial Interface Alternate Setting
					); 

	// Initialize each Pipe object
	m_Endpoint1IN.Initialize(m_Lower, 0x81, 16); 
	m_Endpoint1OUT.Initialize(m_Lower, 0x1, 16); 
	m_Endpoint2IN.Initialize(m_Lower, 0x82, 64); 
	m_Endpoint2OUT.Initialize(m_Lower, 0x2, 64); 

    // 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.

}


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

PWMDrvDevice::~PWMDrvDevice()
{
	t << "Entering PWMDrvDevice::~PWMDrvDevice() (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];
}

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

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


////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::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 PWMDrvDevice::DefaultPower(KIrp I) 
{
	t << "Entering PWMDrvDevice::DefaultPower\n";

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

////////////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::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 PWMDrvDevice::SystemControl(KIrp I) 
{
	t << "Entering PWMDrvDevice::SystemControl\n";

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

////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::OnStartDevice
//
//	Routine Description:
//		Handler for IRP_MJ_PNP subfcn IRP_MN_START_DEVICE
//
//	Parameters:
//		I - Current IRP
//
//	Return Value:
//		NTSTATUS - Result code
//
//	Comments:
//		Typically, the driver sends a SET CONFIGURATION request for the
//		USB device by using KUsbLowerDevice::ActivateConfiguration with
//		the ConfigurationValue to activate.  The wizard generates code to 
//		support a single configuration.  You may create and add additional 
//		configurations. 
//

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

	NTSTATUS status = STATUS_UNSUCCESSFUL;

	AC_STATUS acStatus = AC_SUCCESS;

	I.Information() = 0;

	// The default Pnp policy has already cleared the IRP with the lower device

	//By default, the wizard passes a ConfigurationValue of 1 to 
	//ActivateConfiguration().  This corresponds to the first configuration 
	//that the device reports in its configuration descriptor.  If the device 
	//supports multiple configurations, pass the appropriate
	//ConfigurationValue of the configuration to activate here.
	acStatus = m_Lower.ActivateConfiguration(
		1	// ConfigurationValue 1 (the first configuration)
		);

	switch (acStatus)
	{
		case AC_SUCCESS:
			t << "USB Configuration OK\n";
			status = STATUS_SUCCESS;
			break;

		case AC_COULD_NOT_LOCATE_INTERFACE:
			t << "Could not locate interface\n";
			break;

		case AC_COULD_NOT_PRECONFIGURE_INTERFACE:
			t << "Could not get configuration descriptor\n";
			break;

		case AC_CONFIGURATION_REQUEST_FAILED:
			t << "Board did not accept configuration URB\n";
			break;

		case AC_FAILED_TO_INITIALIZE_INTERFACE_OBJECT:
			t << "Failed to initialize interface object\n";
			break;

		case AC_FAILED_TO_GET_DESCRIPTOR:
			t << "Failed to get device descriptor\n";
			break;

		case AC_FAILED_TO_OPEN_PIPE_OBJECT:
			//NOTE: this may not be an error.  It could mean that
			//the device has an endpoint for which a KUsbPipe object has
			//not been instanced.  If the intention is to not use this endpoint,
			//then it's likely not a problem.  
			status = STATUS_SUCCESS;
			t << "Failed to open pipe object\n";
			break;

		default:
			t << "Unexpected error activating USB configuration\n";
			break;
	}

   return status;  // base class completes the IRP
}


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

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

	m_Lower.DeActivateConfiguration();


// 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);
}

////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::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 PWMDrvDevice::OnRemoveDevice(KIrp I)
{
	t << "Entering PWMDrvDevice::OnRemoveDevice\n";

	// Device removed, release the system resources used by the USB lower device.
	m_Lower.ReleaseResources();




// 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);
}

////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::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:
//		NTSTATUS - Status code indicating success or failure
//
//	Comments:
//		This routine implements the OnDevicePowerUp function.
//		This function was called by the framework from the completion
//		routine of the IRP_MJ_POWER dispatch handler in KPnpDevice.
//		The bus driver has completed the IRP and this driver can now
//		access the hardware device.  
//		This routine runs at dispatch level.
//	

NTSTATUS PWMDrvDevice::OnDevicePowerUp(KIrp I)
{
	NTSTATUS status = STATUS_SUCCESS;

	t << "Entering PWMDrvDevice::OnDevicePowerUp\n";

// TODO:	Service the device.
//			Restore any context to the hardware device that
//			was saved during the handling of a power down request.
//			See the OnDeviceSleep function.
//			Do NOT complete this IRP.
//
	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);
}

////////////////////////////////////////////////////////////////////////
//  PWMDrvDevice::OnDeviceSleep
//
//	Routine Description:
//		Handler for IRP_MJ_POWER with minor function IRP_MN_SET_POWER
//		for a request to go to a low power state from a high power state
//
//	Parameters:
//		I - IRP containing POWER request