www.pudn.com > pcmcia_sample.rar > Pcmcia.cpp

// Pcmcia.cpp 
// 
// Generated by DriverWizard version DriverStudio 2.7.0 (Build 562) 
// Requires Compuware's DriverWorks classes 
// 
 
#define VDW_MAIN 
#include  
#include "Pcmcia.h" 
#include "PcmciaDevice.h" 
 
#pragma hdrstop("Pcmcia.pch") 
 
// Generated by DriverWizard version DriverStudio 2.7.0 (Build 562) 
 
// Set a default 32-bit tag value to be stored with each heap block 
// allocated by operator new. Use BoundsChecker to view the memory pool. 
// This value can be overridden using the global function SetPoolTag(). 
POOLTAG DefaultPoolTag('cmcP'); 
 
// Create the global driver trace object 
// TODO:	Use KDebugOnlyTrace if you want trace messages 
//			to appear only in debug builds.  Use KTrace if 
//			you want trace messages to always appear.	 
KTrace t("Pcmcia"); 
 
///////////////////////////////////////////////////////////////////// 
// Begin INIT section 
#pragma code_seg("INIT") 
 
DECLARE_DRIVER_CLASS(Pcmcia, NULL) 
 
///////////////////////////////////////////////////////////////////// 
//  Pcmcia::DriverEntry 
// 
//	Routine Description: 
//		This is the first entry point called by the system when the 
//		driver is loaded. 
//  
//	Parameters: 
//		RegistryPath - String used to find driver parameters in the 
//			registry.  To locate Pcmcia look for: 
//			HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Pcmcia 
// 
//	Return Value: 
//		NTSTATUS - Return STATUS_SUCCESS if no errors are encountered. 
//			Any other indicates to the system that an error has occured. 
// 
//	Comments: 
// 
 
NTSTATUS Pcmcia::DriverEntry(PUNICODE_STRING RegistryPath) 
{ 
	t << "In DriverEntry Compiled at " __TIME__ " on " __DATE__ "\n"; 
 
 
	// Open the "Parameters" key under the driver 
	KRegistryKey Params(RegistryPath, L"Parameters"); 
	if ( NT_SUCCESS(Params.LastError()) ) 
	{ 
#if DBG 
		ULONG bBreakOnEntry = FALSE; 
		// Read "BreakOnEntry" value from registry 
		Params.QueryValue(L"BreakOnEntry", &bBreakOnEntry); 
		// If requested, break into debugger 
		if (bBreakOnEntry) DbgBreakPoint(); 
#endif 
		// Load driver data members from the registry 
		LoadRegistryParameters(Params); 
	} 
	m_Unit = 0; 
 
	return STATUS_SUCCESS; 
} 
 
 
///////////////////////////////////////////////////////////////////// 
//  Pcmcia::LoadRegistryParameters 
// 
//	Routine Description: 
//		Load driver data members from the registry. 
//  
//	Parameters: 
//		Params - Open registry key pointing to "Parameters" 
// 
//	Return Value: 
//		None 
//			 
//	Comments: 
//		Member variables are updated with values read from registry. 
// 
//		The parameters are found as values under the "Parameters" key,	 
//		HKLM\SYSTEM\CurrentControlSet\Services\Pcmcia\Parameters\... 
// 
 
void Pcmcia::LoadRegistryParameters(KRegistryKey &Params) 
{ 
 
	m_bBreakOnEntry = FALSE; 
	Params.QueryValue(L"BreakOnEntry", &m_bBreakOnEntry); 
	t << "m_bBreakOnEntry loaded from registry, resulting value: [" << m_bBreakOnEntry << "]\n"; 
 
} 
// End INIT section 
///////////////////////////////////////////////////////////////////// 
#pragma code_seg() 
 
///////////////////////////////////////////////////////////////////// 
//  Pcmcia::AddDevice 
// 
//	Routine Description: 
//		Called when the system detects a device for which this 
//		driver is responsible. 
// 
//	Parameters: 
//		Pdo - Physical Device Object. This is a pointer to a system device 
//			object that represents the physical device. 
// 
//	Return Value: 
//		NTSTATUS - Success or failure code. 
// 
//	Comments: 
//		This function creates the Functional Device Object, or FDO. The FDO 
//		enables this driver to handle requests for the physical device.  
// 
 
NTSTATUS Pcmcia::AddDevice(PDEVICE_OBJECT Pdo) 
{ 
	t << "AddDevice called\n"; 
 
    // Create the device object. Note that we used a form of "placement" new, 
	// that is a member operator of KDevice.  This form will use storage 
	// allocated by the system in the device object's device to store our 
	// class instance. 
	PcmciaDevice * pDevice = new ( 
			static_cast(KUnitizedName(L"PcmciaDevice", m_Unit)), 
			FILE_DEVICE_UNKNOWN, 
			NULL, 
			0, 
			DO_DIRECT_IO 
				| DO_POWER_PAGABLE 
			) 
		PcmciaDevice(Pdo, m_Unit); 
 
	if (pDevice == NULL) 
	{ 
		t << "Error creating device PcmciaDevice" 
			   << (ULONG) m_Unit << EOL; 
	    return STATUS_INSUFFICIENT_RESOURCES; 
	} 
 
	NTSTATUS status = pDevice->ConstructorStatus(); 
 
	if ( !NT_SUCCESS(status) ) 
	{ 
		t << "Error constructing device PcmciaDevice" 
		  << (ULONG) m_Unit << " status " << (ULONG) status << EOL; 
		delete pDevice; 
	} 
	else 
	{ 
		m_Unit++; 
 
		pDevice->ReportNewDevicePowerState(PowerDeviceD0); 
	} 
 
	return status; 
}