NTSTATUS
NTAPI
IopLegacyResourceAllocation(IN ARBITER_REQUEST_SOURCE AllocationType,
IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT DeviceObject OPTIONAL,
IN PIO_RESOURCE_REQUIREMENTS_LIST ResourceRequirements,
IN OUT PCM_RESOURCE_LIST *AllocatedResources)
{
NTSTATUS Status;
DPRINT1("IopLegacyResourceAllocation is halfplemented!\n");
Status = IopFixupResourceListWithRequirements(ResourceRequirements,
AllocatedResources);
if (!NT_SUCCESS(Status))
{
if (Status == STATUS_CONFLICTING_ADDRESSES)
{
DPRINT1("Denying an attempt to claim resources currently in use by another device!\n");
}
return Status;
}
/* TODO: Claim resources in registry */
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
IopAssignDeviceResources(
IN PDEVICE_NODE DeviceNode)
{
NTSTATUS Status;
ULONG ListSize;
IopDeviceNodeSetFlag(DeviceNode, DNF_ASSIGNING_RESOURCES);
Status = IopFilterResourceRequirements(DeviceNode);
if (!NT_SUCCESS(Status))
goto ByeBye;
if (!DeviceNode->BootResources && !DeviceNode->ResourceRequirements)
{
DeviceNode->Flags |= DNF_NO_RESOURCE_REQUIRED;
DeviceNode->Flags &= ~DNF_ASSIGNING_RESOURCES;
/* No resource needed for this device */
DeviceNode->ResourceList = NULL;
DeviceNode->ResourceListTranslated = NULL;
return STATUS_SUCCESS;
}
if (DeviceNode->BootResources)
{
ListSize = PnpDetermineResourceListSize(DeviceNode->BootResources);
DeviceNode->ResourceList = ExAllocatePool(PagedPool, ListSize);
if (!DeviceNode->ResourceList)
{
Status = STATUS_NO_MEMORY;
goto ByeBye;
}
RtlCopyMemory(DeviceNode->ResourceList, DeviceNode->BootResources, ListSize);
Status = IopDetectResourceConflict(DeviceNode->ResourceList, FALSE, NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Boot resources for %wZ cause a resource conflict!\n", &DeviceNode->InstancePath);
ExFreePool(DeviceNode->ResourceList);
DeviceNode->ResourceList = NULL;
}
}
else
{
/* We'll make this from the requirements */
DeviceNode->ResourceList = NULL;
}
/* No resources requirements */
if (!DeviceNode->ResourceRequirements)
goto Finish;
/* Call HAL to fixup our resource requirements list */
HalAdjustResourceList(&DeviceNode->ResourceRequirements);
/* Add resource requirements that aren't in the list we already got */
Status = IopFixupResourceListWithRequirements(DeviceNode->ResourceRequirements,
&DeviceNode->ResourceList);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to fixup a resource list from supplied resources for %wZ\n", &DeviceNode->InstancePath);
DeviceNode->Problem = CM_PROB_NORMAL_CONFLICT;
goto ByeBye;
}
/* IopFixupResourceListWithRequirements should NEVER give us a conflicting list */
ASSERT(IopDetectResourceConflict(DeviceNode->ResourceList, FALSE, NULL) != STATUS_CONFLICTING_ADDRESSES);
Finish:
Status = IopTranslateDeviceResources(DeviceNode);
if (!NT_SUCCESS(Status))
{
DeviceNode->Problem = CM_PROB_TRANSLATION_FAILED;
DPRINT1("Failed to translate resources for %wZ\n", &DeviceNode->InstancePath);
goto ByeBye;
}
Status = IopUpdateResourceMapForPnPDevice(DeviceNode);
if (!NT_SUCCESS(Status))
goto ByeBye;
Status = IopUpdateControlKeyWithResources(DeviceNode);
if (!NT_SUCCESS(Status))
goto ByeBye;
IopDeviceNodeSetFlag(DeviceNode, DNF_RESOURCE_ASSIGNED);
IopDeviceNodeClearFlag(DeviceNode, DNF_ASSIGNING_RESOURCES);
return STATUS_SUCCESS;
ByeBye:
if (DeviceNode->ResourceList)
{
ExFreePool(DeviceNode->ResourceList);
DeviceNode->ResourceList = NULL;
}
DeviceNode->ResourceListTranslated = NULL;
IopDeviceNodeClearFlag(DeviceNode, DNF_ASSIGNING_RESOURCES);
return Status;
}
