/
hsac_pcie.cpp
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/
hsac_pcie.cpp
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#include "stdafx.h"
/*
hsac_pcie - Main file
This file contains a very simple implementation of a WDM driver. Note that it does not support all
WDM functionality, or any functionality sufficient for practical use. The only thing this driver does
perfectly, is loading and unloading.
To install the driver, go to Control Panel -> Add Hardware Wizard, then select "Add a new hardware device".
Select "manually select from list", choose device category, press "Have Disk" and enter the path to your
INF file.
Note that not all device types (specified as Class in INF file) can be installed that way.
To start/stop this driver, use Windows Device Manager (enable/disable device command).
If you want to speed up your driver development, it is recommended to see the BazisLib library, that
contains convenient classes for standard device types, as well as a more powerful version of the driver
wizard. To get information about BazisLib, see its website:
http://bazislib.sysprogs.org/
*/
void hsac_pcieUnload(IN PDRIVER_OBJECT DriverObject);
NTSTATUS hsac_pcieCreateClose(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
NTSTATUS hsac_pcieDefaultHandler(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
NTSTATUS hsac_pcieAddDevice(IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT PhysicalDeviceObject);
NTSTATUS hsac_pciePnP(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
typedef struct _deviceExtension
{
PDEVICE_OBJECT DeviceObject;
PDEVICE_OBJECT TargetDeviceObject;
PDEVICE_OBJECT PhysicalDeviceObject;
UNICODE_STRING DeviceInterface;
} hsac_pcie_DEVICE_EXTENSION, *Phsac_pcie_DEVICE_EXTENSION;
// {e0287a30-e9ba-40db-a0b0-e2a92d13d4bb}
static const GUID GUID_hsac_pcieInterface = {0xE0287A30, 0xe9ba, 0x40db, {0xa0, 0xb0, 0xe2, 0xa9, 0x2d, 0x13, 0xd4, 0xbb } };
#ifdef __cplusplus
extern "C" NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath);
#endif
NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
{
unsigned i;
DbgPrint("Hello from hsac_pcie!\n");
for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
DriverObject->MajorFunction[i] = hsac_pcieDefaultHandler;
DriverObject->MajorFunction[IRP_MJ_CREATE] = hsac_pcieCreateClose;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = hsac_pcieCreateClose;
DriverObject->MajorFunction[IRP_MJ_PNP] = hsac_pciePnP;
DriverObject->DriverUnload = hsac_pcieUnload;
DriverObject->DriverStartIo = NULL;
DriverObject->DriverExtension->AddDevice = hsac_pcieAddDevice;
return STATUS_SUCCESS;
}
void hsac_pcieUnload(IN PDRIVER_OBJECT DriverObject)
{
DbgPrint("Goodbye from hsac_pcie!\n");
}
NTSTATUS hsac_pcieCreateClose(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
NTSTATUS hsac_pcieDefaultHandler(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
Phsac_pcie_DEVICE_EXTENSION deviceExtension = NULL;
IoSkipCurrentIrpStackLocation(Irp);
deviceExtension = (Phsac_pcie_DEVICE_EXTENSION) DeviceObject->DeviceExtension;
return IoCallDriver(deviceExtension->TargetDeviceObject, Irp);
}
NTSTATUS hsac_pcieAddDevice(IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT PhysicalDeviceObject)
{
PDEVICE_OBJECT DeviceObject = NULL;
Phsac_pcie_DEVICE_EXTENSION pExtension = NULL;
NTSTATUS status;
status = IoCreateDevice(DriverObject,
sizeof(hsac_pcie_DEVICE_EXTENSION),
NULL,
FILE_DEVICE_UNKNOWN,
0,
0,
&DeviceObject);
if (!NT_SUCCESS(status))
return status;
pExtension = (Phsac_pcie_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
pExtension->DeviceObject = DeviceObject;
pExtension->PhysicalDeviceObject = PhysicalDeviceObject;
pExtension->TargetDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject);
status = IoRegisterDeviceInterface(PhysicalDeviceObject, &GUID_hsac_pcieInterface, NULL, &pExtension->DeviceInterface);
ASSERT(NT_SUCCESS(status));
DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
return STATUS_SUCCESS;
}
NTSTATUS hsac_pcieIrpCompletion(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context
)
{
PKEVENT Event = (PKEVENT) Context;
UNREFERENCED_PARAMETER(DeviceObject);
UNREFERENCED_PARAMETER(Irp);
KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
return(STATUS_MORE_PROCESSING_REQUIRED);
}
NTSTATUS hsac_pcieForwardIrpSynchronous(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
{
Phsac_pcie_DEVICE_EXTENSION deviceExtension;
KEVENT event;
NTSTATUS status;
KeInitializeEvent(&event, NotificationEvent, FALSE);
deviceExtension = (Phsac_pcie_DEVICE_EXTENSION) DeviceObject->DeviceExtension;
IoCopyCurrentIrpStackLocationToNext(Irp);
IoSetCompletionRoutine(Irp, hsac_pcieIrpCompletion, &event, TRUE, TRUE, TRUE);
status = IoCallDriver(deviceExtension->TargetDeviceObject, Irp);
if (status == STATUS_PENDING) {
KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
status = Irp->IoStatus.Status;
}
return status;
}
NTSTATUS hsac_pciePnP(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
PIO_STACK_LOCATION irpSp = IoGetCurrentIrpStackLocation(Irp);
Phsac_pcie_DEVICE_EXTENSION pExt = ((Phsac_pcie_DEVICE_EXTENSION)DeviceObject->DeviceExtension);
NTSTATUS status;
ASSERT(pExt);
switch (irpSp->MinorFunction)
{
case IRP_MN_START_DEVICE:
IoSetDeviceInterfaceState(&pExt->DeviceInterface, TRUE);
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
case IRP_MN_QUERY_REMOVE_DEVICE:
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
case IRP_MN_REMOVE_DEVICE:
IoSetDeviceInterfaceState(&pExt->DeviceInterface, FALSE);
status = hsac_pcieForwardIrpSynchronous(DeviceObject, Irp);
IoDetachDevice(pExt->TargetDeviceObject);
IoDeleteDevice(pExt->DeviceObject);
RtlFreeUnicodeString(&pExt->DeviceInterface);
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
case IRP_MN_QUERY_PNP_DEVICE_STATE:
status = hsac_pcieForwardIrpSynchronous(DeviceObject, Irp);
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return status;
}
return hsac_pcieDefaultHandler(DeviceObject, Irp);
}