mirror of
https://github.com/reactos/reactos.git
synced 2024-09-06 10:52:52 +00:00
![Stanislav Motylkov](/assets/img/avatar_default.png)
Some virtual machines errorneously expose null PCI device function on PIIX4 chipset where an USB controller should normally reside. Windows pci.sys driver does not enumerate these devices. Affected virtual machines: - Connectix Virtual PC 5.1.370 - Connectix Virtual PC 5.2.418 - Microsoft Virtual PC 2004 SP1 (5.3.582.27) - Microsoft Virtual PC 2007 SP1 (6.0.156.0) Non-affected virtual machines: - Connectix Virtual PC 4.0 - Microsoft Hyper-V Fixes CORE-17636.
615 lines
18 KiB
C
615 lines
18 KiB
C
/*
|
|
* PROJECT: ReactOS PCI bus driver
|
|
* FILE: fdo.c
|
|
* PURPOSE: PCI device object dispatch routines
|
|
* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
|
|
* UPDATE HISTORY:
|
|
* 10-09-2001 CSH Created
|
|
*/
|
|
|
|
#include "pci.h"
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/*** PRIVATE *****************************************************************/
|
|
|
|
static IO_COMPLETION_ROUTINE ForwardIrpAndWaitCompletion;
|
|
|
|
static NTSTATUS NTAPI
|
|
ForwardIrpAndWaitCompletion(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp,
|
|
IN PVOID Context)
|
|
{
|
|
UNREFERENCED_PARAMETER(DeviceObject);
|
|
if (Irp->PendingReturned)
|
|
KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
|
|
return STATUS_MORE_PROCESSING_REQUIRED;
|
|
}
|
|
|
|
NTSTATUS NTAPI
|
|
ForwardIrpAndWait(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
KEVENT Event;
|
|
NTSTATUS Status;
|
|
PDEVICE_OBJECT LowerDevice = ((PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->Ldo;
|
|
ASSERT(LowerDevice);
|
|
|
|
KeInitializeEvent(&Event, NotificationEvent, FALSE);
|
|
IoCopyCurrentIrpStackLocationToNext(Irp);
|
|
|
|
IoSetCompletionRoutine(Irp, ForwardIrpAndWaitCompletion, &Event, TRUE, TRUE, TRUE);
|
|
|
|
Status = IoCallDriver(LowerDevice, Irp);
|
|
if (Status == STATUS_PENDING)
|
|
{
|
|
Status = KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
|
|
if (NT_SUCCESS(Status))
|
|
Status = Irp->IoStatus.Status;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
static NTSTATUS
|
|
FdoLocateChildDevice(
|
|
PPCI_DEVICE *Device,
|
|
PFDO_DEVICE_EXTENSION DeviceExtension,
|
|
PCI_SLOT_NUMBER SlotNumber,
|
|
PPCI_COMMON_CONFIG PciConfig)
|
|
{
|
|
PLIST_ENTRY CurrentEntry;
|
|
PPCI_DEVICE CurrentDevice;
|
|
|
|
DPRINT("Called\n");
|
|
|
|
CurrentEntry = DeviceExtension->DeviceListHead.Flink;
|
|
while (CurrentEntry != &DeviceExtension->DeviceListHead)
|
|
{
|
|
CurrentDevice = CONTAINING_RECORD(CurrentEntry, PCI_DEVICE, ListEntry);
|
|
|
|
/* If both vendor ID and device ID match, it is the same device */
|
|
if ((PciConfig->VendorID == CurrentDevice->PciConfig.VendorID) &&
|
|
(PciConfig->DeviceID == CurrentDevice->PciConfig.DeviceID) &&
|
|
(SlotNumber.u.AsULONG == CurrentDevice->SlotNumber.u.AsULONG))
|
|
{
|
|
*Device = CurrentDevice;
|
|
DPRINT("Done\n");
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
CurrentEntry = CurrentEntry->Flink;
|
|
}
|
|
|
|
*Device = NULL;
|
|
DPRINT("Done\n");
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
FdoEnumerateDevices(
|
|
PDEVICE_OBJECT DeviceObject)
|
|
{
|
|
PFDO_DEVICE_EXTENSION DeviceExtension;
|
|
PCI_COMMON_CONFIG PciConfig;
|
|
PPCI_DEVICE Device;
|
|
PCI_SLOT_NUMBER SlotNumber;
|
|
ULONG DeviceNumber;
|
|
ULONG FunctionNumber;
|
|
ULONG Size;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("Called\n");
|
|
|
|
DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
|
|
|
|
DeviceExtension->DeviceListCount = 0;
|
|
|
|
/* Enumerate devices on the PCI bus */
|
|
SlotNumber.u.AsULONG = 0;
|
|
for (DeviceNumber = 0; DeviceNumber < PCI_MAX_DEVICES; DeviceNumber++)
|
|
{
|
|
SlotNumber.u.bits.DeviceNumber = DeviceNumber;
|
|
for (FunctionNumber = 0; FunctionNumber < PCI_MAX_FUNCTION; FunctionNumber++)
|
|
{
|
|
SlotNumber.u.bits.FunctionNumber = FunctionNumber;
|
|
|
|
DPRINT("Bus %1lu Device %2lu Func %1lu\n",
|
|
DeviceExtension->BusNumber,
|
|
DeviceNumber,
|
|
FunctionNumber);
|
|
|
|
RtlZeroMemory(&PciConfig,
|
|
sizeof(PCI_COMMON_CONFIG));
|
|
|
|
Size = HalGetBusData(PCIConfiguration,
|
|
DeviceExtension->BusNumber,
|
|
SlotNumber.u.AsULONG,
|
|
&PciConfig,
|
|
PCI_COMMON_HDR_LENGTH);
|
|
DPRINT("Size %lu\n", Size);
|
|
if (Size < PCI_COMMON_HDR_LENGTH)
|
|
{
|
|
if (FunctionNumber == 0)
|
|
{
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
|
|
DPRINT("Bus %1lu Device %2lu Func %1lu VenID 0x%04hx DevID 0x%04hx\n",
|
|
DeviceExtension->BusNumber,
|
|
DeviceNumber,
|
|
FunctionNumber,
|
|
PciConfig.VendorID,
|
|
PciConfig.DeviceID);
|
|
|
|
if (PciConfig.VendorID == 0 && PciConfig.DeviceID == 0)
|
|
{
|
|
DPRINT("Filter out devices with null vendor and device ID\n");
|
|
continue;
|
|
}
|
|
|
|
Status = FdoLocateChildDevice(&Device, DeviceExtension, SlotNumber, &PciConfig);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
Device = ExAllocatePoolWithTag(NonPagedPool, sizeof(PCI_DEVICE), TAG_PCI);
|
|
if (!Device)
|
|
{
|
|
/* FIXME: Cleanup resources for already discovered devices */
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
RtlZeroMemory(Device,
|
|
sizeof(PCI_DEVICE));
|
|
|
|
Device->BusNumber = DeviceExtension->BusNumber;
|
|
|
|
RtlCopyMemory(&Device->SlotNumber,
|
|
&SlotNumber,
|
|
sizeof(PCI_SLOT_NUMBER));
|
|
|
|
RtlCopyMemory(&Device->PciConfig,
|
|
&PciConfig,
|
|
sizeof(PCI_COMMON_CONFIG));
|
|
|
|
ExInterlockedInsertTailList(
|
|
&DeviceExtension->DeviceListHead,
|
|
&Device->ListEntry,
|
|
&DeviceExtension->DeviceListLock);
|
|
}
|
|
|
|
DeviceExtension->DeviceListCount++;
|
|
|
|
/* Skip to next device if the current one is not a multifunction device */
|
|
if ((FunctionNumber == 0) &&
|
|
((PciConfig.HeaderType & 0x80) == 0))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
DPRINT("Done\n");
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
FdoQueryBusRelations(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp,
|
|
PIO_STACK_LOCATION IrpSp)
|
|
{
|
|
PPDO_DEVICE_EXTENSION PdoDeviceExtension = NULL;
|
|
PFDO_DEVICE_EXTENSION DeviceExtension;
|
|
PDEVICE_RELATIONS Relations;
|
|
PLIST_ENTRY CurrentEntry;
|
|
PPCI_DEVICE Device;
|
|
NTSTATUS Status;
|
|
BOOLEAN ErrorOccurred;
|
|
NTSTATUS ErrorStatus;
|
|
ULONG Size;
|
|
ULONG i;
|
|
|
|
UNREFERENCED_PARAMETER(IrpSp);
|
|
|
|
DPRINT("Called\n");
|
|
|
|
ErrorStatus = STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
Status = STATUS_SUCCESS;
|
|
|
|
ErrorOccurred = FALSE;
|
|
|
|
FdoEnumerateDevices(DeviceObject);
|
|
|
|
DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
|
|
|
|
if (Irp->IoStatus.Information)
|
|
{
|
|
/* FIXME: Another bus driver has already created a DEVICE_RELATIONS
|
|
structure so we must merge this structure with our own */
|
|
DPRINT1("FIXME: leaking old bus relations\n");
|
|
}
|
|
|
|
Size = sizeof(DEVICE_RELATIONS) +
|
|
sizeof(Relations->Objects) * (DeviceExtension->DeviceListCount - 1);
|
|
Relations = ExAllocatePoolWithTag(PagedPool, Size, TAG_PCI);
|
|
if (!Relations)
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
Relations->Count = DeviceExtension->DeviceListCount;
|
|
|
|
i = 0;
|
|
CurrentEntry = DeviceExtension->DeviceListHead.Flink;
|
|
while (CurrentEntry != &DeviceExtension->DeviceListHead)
|
|
{
|
|
Device = CONTAINING_RECORD(CurrentEntry, PCI_DEVICE, ListEntry);
|
|
|
|
PdoDeviceExtension = NULL;
|
|
|
|
if (!Device->Pdo)
|
|
{
|
|
/* Create a physical device object for the
|
|
device as it does not already have one */
|
|
Status = IoCreateDevice(DeviceObject->DriverObject,
|
|
sizeof(PDO_DEVICE_EXTENSION),
|
|
NULL,
|
|
FILE_DEVICE_CONTROLLER,
|
|
FILE_AUTOGENERATED_DEVICE_NAME,
|
|
FALSE,
|
|
&Device->Pdo);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("IoCreateDevice() failed with status 0x%X\n", Status);
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
|
|
Device->Pdo->Flags &= ~DO_DEVICE_INITIALIZING;
|
|
|
|
//Device->Pdo->Flags |= DO_POWER_PAGABLE;
|
|
|
|
PdoDeviceExtension = (PPDO_DEVICE_EXTENSION)Device->Pdo->DeviceExtension;
|
|
|
|
RtlZeroMemory(PdoDeviceExtension, sizeof(PDO_DEVICE_EXTENSION));
|
|
|
|
PdoDeviceExtension->Common.IsFDO = FALSE;
|
|
|
|
PdoDeviceExtension->Common.DeviceObject = Device->Pdo;
|
|
|
|
PdoDeviceExtension->Common.DevicePowerState = PowerDeviceD0;
|
|
|
|
PdoDeviceExtension->Fdo = DeviceObject;
|
|
|
|
PdoDeviceExtension->PciDevice = Device;
|
|
|
|
/* Add Device ID string */
|
|
Status = PciCreateDeviceIDString(&PdoDeviceExtension->DeviceID, Device);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
|
|
DPRINT("DeviceID: %S\n", PdoDeviceExtension->DeviceID.Buffer);
|
|
|
|
/* Add Instance ID string */
|
|
Status = PciCreateInstanceIDString(&PdoDeviceExtension->InstanceID, Device);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
|
|
/* Add Hardware IDs string */
|
|
Status = PciCreateHardwareIDsString(&PdoDeviceExtension->HardwareIDs, Device);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
|
|
/* Add Compatible IDs string */
|
|
Status = PciCreateCompatibleIDsString(&PdoDeviceExtension->CompatibleIDs, Device);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
|
|
/* Add device description string */
|
|
Status = PciCreateDeviceDescriptionString(&PdoDeviceExtension->DeviceDescription, Device);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
|
|
/* Add device location string */
|
|
Status = PciCreateDeviceLocationString(&PdoDeviceExtension->DeviceLocation, Device);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ErrorStatus = Status;
|
|
ErrorOccurred = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Reference the physical device object. The PnP manager
|
|
will dereference it again when it is no longer needed */
|
|
ObReferenceObject(Device->Pdo);
|
|
|
|
Relations->Objects[i] = Device->Pdo;
|
|
|
|
i++;
|
|
|
|
CurrentEntry = CurrentEntry->Flink;
|
|
}
|
|
|
|
if (ErrorOccurred)
|
|
{
|
|
/* FIXME: Cleanup all new PDOs created in this call. Please give me SEH!!! ;-) */
|
|
/* FIXME: Should IoAttachDeviceToDeviceStack() be undone? */
|
|
if (PdoDeviceExtension)
|
|
{
|
|
RtlFreeUnicodeString(&PdoDeviceExtension->DeviceID);
|
|
RtlFreeUnicodeString(&PdoDeviceExtension->InstanceID);
|
|
RtlFreeUnicodeString(&PdoDeviceExtension->HardwareIDs);
|
|
RtlFreeUnicodeString(&PdoDeviceExtension->CompatibleIDs);
|
|
RtlFreeUnicodeString(&PdoDeviceExtension->DeviceDescription);
|
|
RtlFreeUnicodeString(&PdoDeviceExtension->DeviceLocation);
|
|
}
|
|
|
|
ExFreePoolWithTag(Relations, TAG_PCI);
|
|
return ErrorStatus;
|
|
}
|
|
|
|
Irp->IoStatus.Information = (ULONG_PTR)Relations;
|
|
|
|
DPRINT("Done\n");
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
FdoStartDevice(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PFDO_DEVICE_EXTENSION DeviceExtension;
|
|
PCM_RESOURCE_LIST AllocatedResources;
|
|
PCM_PARTIAL_RESOURCE_DESCRIPTOR ResourceDescriptor;
|
|
ULONG FoundBusNumber = FALSE;
|
|
ULONG i;
|
|
|
|
DPRINT("Called\n");
|
|
|
|
DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
|
|
|
|
AllocatedResources = IoGetCurrentIrpStackLocation(Irp)->Parameters.StartDevice.AllocatedResources;
|
|
if (!AllocatedResources)
|
|
{
|
|
DPRINT("No allocated resources sent to driver\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
if (AllocatedResources->Count < 1)
|
|
{
|
|
DPRINT("Not enough allocated resources sent to driver\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
if (AllocatedResources->List[0].PartialResourceList.Version != 1 ||
|
|
AllocatedResources->List[0].PartialResourceList.Revision != 1)
|
|
return STATUS_REVISION_MISMATCH;
|
|
|
|
ASSERT(DeviceExtension->State == dsStopped);
|
|
|
|
/* By default, use the bus number in the resource list header */
|
|
DeviceExtension->BusNumber = AllocatedResources->List[0].BusNumber;
|
|
|
|
for (i = 0; i < AllocatedResources->List[0].PartialResourceList.Count; i++)
|
|
{
|
|
ResourceDescriptor = &AllocatedResources->List[0].PartialResourceList.PartialDescriptors[i];
|
|
switch (ResourceDescriptor->Type)
|
|
{
|
|
case CmResourceTypeBusNumber:
|
|
if (FoundBusNumber || ResourceDescriptor->u.BusNumber.Length < 1)
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
/* Use this one instead */
|
|
ASSERT(AllocatedResources->List[0].BusNumber == ResourceDescriptor->u.BusNumber.Start);
|
|
DeviceExtension->BusNumber = ResourceDescriptor->u.BusNumber.Start;
|
|
DPRINT("Found bus number resource: %lu\n", DeviceExtension->BusNumber);
|
|
FoundBusNumber = TRUE;
|
|
break;
|
|
|
|
default:
|
|
DPRINT("Unknown resource descriptor type 0x%x\n", ResourceDescriptor->Type);
|
|
}
|
|
}
|
|
|
|
InitializeListHead(&DeviceExtension->DeviceListHead);
|
|
KeInitializeSpinLock(&DeviceExtension->DeviceListLock);
|
|
DeviceExtension->DeviceListCount = 0;
|
|
DeviceExtension->State = dsStarted;
|
|
|
|
ExInterlockedInsertTailList(
|
|
&DriverExtension->BusListHead,
|
|
&DeviceExtension->ListEntry,
|
|
&DriverExtension->BusListLock);
|
|
|
|
Irp->IoStatus.Information = 0;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/*** PUBLIC ******************************************************************/
|
|
|
|
NTSTATUS
|
|
FdoPnpControl(
|
|
PDEVICE_OBJECT DeviceObject,
|
|
PIRP Irp)
|
|
/*
|
|
* FUNCTION: Handle Plug and Play IRPs for the PCI device object
|
|
* ARGUMENTS:
|
|
* DeviceObject = Pointer to functional device object of the PCI driver
|
|
* Irp = Pointer to IRP that should be handled
|
|
* RETURNS:
|
|
* Status
|
|
*/
|
|
{
|
|
PFDO_DEVICE_EXTENSION DeviceExtension;
|
|
PIO_STACK_LOCATION IrpSp;
|
|
NTSTATUS Status = Irp->IoStatus.Status;
|
|
|
|
DPRINT("Called\n");
|
|
|
|
DeviceExtension = DeviceObject->DeviceExtension;
|
|
|
|
IrpSp = IoGetCurrentIrpStackLocation(Irp);
|
|
switch (IrpSp->MinorFunction)
|
|
{
|
|
#if 0
|
|
case IRP_MN_CANCEL_REMOVE_DEVICE:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
|
|
case IRP_MN_CANCEL_STOP_DEVICE:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
|
|
case IRP_MN_DEVICE_USAGE_NOTIFICATION:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
|
|
case IRP_MN_FILTER_RESOURCE_REQUIREMENTS:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
#endif
|
|
case IRP_MN_QUERY_DEVICE_RELATIONS:
|
|
if (IrpSp->Parameters.QueryDeviceRelations.Type != BusRelations)
|
|
break;
|
|
|
|
Status = FdoQueryBusRelations(DeviceObject, Irp, IrpSp);
|
|
Irp->IoStatus.Status = Status;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return Status;
|
|
#if 0
|
|
case IRP_MN_QUERY_PNP_DEVICE_STATE:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
|
|
case IRP_MN_QUERY_REMOVE_DEVICE:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
#endif
|
|
case IRP_MN_START_DEVICE:
|
|
DPRINT("IRP_MN_START_DEVICE received\n");
|
|
Status = ForwardIrpAndWait(DeviceObject, Irp);
|
|
if (NT_SUCCESS(Status))
|
|
Status = FdoStartDevice(DeviceObject, Irp);
|
|
|
|
Irp->IoStatus.Status = Status;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return Status;
|
|
|
|
case IRP_MN_QUERY_STOP_DEVICE:
|
|
/* We don't support stopping yet */
|
|
Status = STATUS_UNSUCCESSFUL;
|
|
Irp->IoStatus.Status = Status;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return Status;
|
|
|
|
case IRP_MN_STOP_DEVICE:
|
|
/* We can't fail this one so we fail the QUERY_STOP request that precedes it */
|
|
break;
|
|
#if 0
|
|
case IRP_MN_SURPRISE_REMOVAL:
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
#endif
|
|
|
|
case IRP_MN_FILTER_RESOURCE_REQUIREMENTS:
|
|
break;
|
|
|
|
case IRP_MN_REMOVE_DEVICE:
|
|
/* Detach the device object from the device stack */
|
|
IoDetachDevice(DeviceExtension->Ldo);
|
|
|
|
/* Delete the device object */
|
|
IoDeleteDevice(DeviceObject);
|
|
|
|
/* Return success */
|
|
Status = STATUS_SUCCESS;
|
|
break;
|
|
|
|
case IRP_MN_QUERY_CAPABILITIES:
|
|
case IRP_MN_QUERY_PNP_DEVICE_STATE:
|
|
/* Don't print the warning, too much noise */
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("Unknown PNP minor function 0x%x\n", IrpSp->MinorFunction);
|
|
break;
|
|
}
|
|
|
|
Irp->IoStatus.Status = Status;
|
|
IoSkipCurrentIrpStackLocation(Irp);
|
|
Status = IoCallDriver(DeviceExtension->Ldo, Irp);
|
|
|
|
DPRINT("Leaving. Status 0x%lx\n", Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
FdoPowerControl(
|
|
PDEVICE_OBJECT DeviceObject,
|
|
PIRP Irp)
|
|
/*
|
|
* FUNCTION: Handle power management IRPs for the PCI device object
|
|
* ARGUMENTS:
|
|
* DeviceObject = Pointer to functional device object of the PCI driver
|
|
* Irp = Pointer to IRP that should be handled
|
|
* RETURNS:
|
|
* Status
|
|
*/
|
|
{
|
|
PFDO_DEVICE_EXTENSION DeviceExtension;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("Called\n");
|
|
|
|
DeviceExtension = DeviceObject->DeviceExtension;
|
|
|
|
PoStartNextPowerIrp(Irp);
|
|
IoSkipCurrentIrpStackLocation(Irp);
|
|
Status = PoCallDriver(DeviceExtension->Ldo, Irp);
|
|
|
|
DPRINT("Leaving. Status 0x%X\n", Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|