static
NTSTATUS
IopFilterResourceRequirements(IN PDEVICE_NODE DeviceNode)
{
IO_STACK_LOCATION Stack;
IO_STATUS_BLOCK IoStatusBlock;
NTSTATUS Status;
DPRINT("Sending IRP_MN_FILTER_RESOURCE_REQUIREMENTS to device stack\n");
Stack.Parameters.FilterResourceRequirements.IoResourceRequirementList = DeviceNode->ResourceRequirements;
Status = IopInitiatePnpIrp(
DeviceNode->PhysicalDeviceObject,
&IoStatusBlock,
IRP_MN_FILTER_RESOURCE_REQUIREMENTS,
&Stack);
if (!NT_SUCCESS(Status) && Status != STATUS_NOT_SUPPORTED)
{
DPRINT1("IopInitiatePnpIrp(IRP_MN_FILTER_RESOURCE_REQUIREMENTS) failed\n");
return Status;
}
else if (NT_SUCCESS(Status) && IoStatusBlock.Information)
{
DeviceNode->ResourceRequirements = (PIO_RESOURCE_REQUIREMENTS_LIST)IoStatusBlock.Information;
}
return STATUS_SUCCESS;
}
/*
* @implemented
*/
PDMA_ADAPTER
NTAPI
IoGetDmaAdapter(IN PDEVICE_OBJECT PhysicalDeviceObject,
IN PDEVICE_DESCRIPTION DeviceDescription,
IN OUT PULONG NumberOfMapRegisters)
{
NTSTATUS Status;
ULONG ResultLength;
BUS_INTERFACE_STANDARD BusInterface;
IO_STATUS_BLOCK IoStatusBlock;
IO_STACK_LOCATION Stack;
DEVICE_DESCRIPTION PrivateDeviceDescription;
PDMA_ADAPTER Adapter = NULL;
DPRINT("IoGetDmaAdapter called\n");
/* Try to create DMA adapter through bus driver */
if (PhysicalDeviceObject)
{
if (DeviceDescription->InterfaceType == PNPBus ||
DeviceDescription->InterfaceType == InterfaceTypeUndefined)
{
RtlCopyMemory(&PrivateDeviceDescription,
DeviceDescription,
sizeof(DEVICE_DESCRIPTION));
Status = IoGetDeviceProperty(PhysicalDeviceObject,
DevicePropertyLegacyBusType,
sizeof(INTERFACE_TYPE),
&PrivateDeviceDescription.InterfaceType,
&ResultLength);
if (!NT_SUCCESS(Status))
PrivateDeviceDescription.InterfaceType = Internal;
DeviceDescription = &PrivateDeviceDescription;
}
Stack.Parameters.QueryInterface.Size = sizeof(BUS_INTERFACE_STANDARD);
Stack.Parameters.QueryInterface.Version = 1;
Stack.Parameters.QueryInterface.Interface = (PINTERFACE)&BusInterface;
Stack.Parameters.QueryInterface.InterfaceType =
&GUID_BUS_INTERFACE_STANDARD;
Status = IopInitiatePnpIrp(PhysicalDeviceObject,
&IoStatusBlock,
IRP_MN_QUERY_INTERFACE,
&Stack);
if (NT_SUCCESS(Status))
{
Adapter = BusInterface.GetDmaAdapter(BusInterface.Context,
DeviceDescription,
NumberOfMapRegisters);
BusInterface.InterfaceDereference(BusInterface.Context);
if (Adapter) return Adapter;
}
}
/* Fall back to HAL */
return HalGetDmaAdapter(PhysicalDeviceObject,
DeviceDescription,
NumberOfMapRegisters);
}
