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https://github.com/reactos/reactos.git
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116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
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* PROJECT: ReactOS PCI Bus Driver
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* LICENSE: BSD - See COPYING.ARM in the top level directory
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* FILE: drivers/bus/pci/arb/ar_busno.c
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* PURPOSE: Bus Number Arbitration
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* PROGRAMMERS: ReactOS Portable Systems Group
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*/
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/* INCLUDES *******************************************************************/
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#include <pci.h>
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS ********************************************************************/
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PCI_INTERFACE ArbiterInterfaceBusNumber =
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{
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&GUID_ARBITER_INTERFACE_STANDARD,
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sizeof(ARBITER_INTERFACE),
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0,
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0,
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PCI_INTERFACE_FDO,
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0,
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PciArb_BusNumber,
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arbusno_Constructor,
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arbusno_Initializer
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};
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/* FUNCTIONS ******************************************************************/
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NTSTATUS
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NTAPI
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arbusno_Initializer(IN PVOID Instance)
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{
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PPCI_ARBITER_INSTANCE Arbiter = Instance;
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PPCI_FDO_EXTENSION FdoExtension;
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NTSTATUS Status;
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PAGED_CODE();
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RtlZeroMemory(&Arbiter->CommonInstance, sizeof(Arbiter->CommonInstance));
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FdoExtension = Arbiter->BusFdoExtension;
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/* Not yet implemented */
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UNIMPLEMENTED;
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#if 0
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Arbiter->CommonInstance.UnpackRequirement = arbusno_UnpackRequirement;
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Arbiter->CommonInstance.PackResource = arbusno_PackResource;
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Arbiter->CommonInstance.UnpackResource = arbusno_UnpackResource;
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Arbiter->CommonInstance.ScoreRequirement = arbusno_ScoreRequirement;
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#endif
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Status = ArbInitializeArbiterInstance(&Arbiter->CommonInstance,
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FdoExtension->FunctionalDeviceObject,
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CmResourceTypeBusNumber,
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Arbiter->InstanceName,
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L"Pci",
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("arbusno_Initializer: init arbiter return %X", Status);
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}
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return Status;
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}
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NTSTATUS
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NTAPI
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arbusno_Constructor(IN PVOID DeviceExtension,
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IN PVOID PciInterface,
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IN PVOID InterfaceData,
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IN USHORT Version,
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IN USHORT Size,
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IN PINTERFACE Interface)
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{
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PPCI_FDO_EXTENSION FdoExtension = (PPCI_FDO_EXTENSION)DeviceExtension;
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NTSTATUS Status;
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PAGED_CODE();
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UNREFERENCED_PARAMETER(PciInterface);
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UNREFERENCED_PARAMETER(Version);
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UNREFERENCED_PARAMETER(Size);
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UNREFERENCED_PARAMETER(Interface);
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/* Make sure it's the expected interface */
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if ((ULONG_PTR)InterfaceData != CmResourceTypeBusNumber)
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{
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/* Arbiter support must have been initialized first */
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if (FdoExtension->ArbitersInitialized)
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{
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/* Not yet implemented */
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UNIMPLEMENTED;
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while (TRUE);
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}
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else
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{
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/* No arbiters for this FDO */
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Status = STATUS_NOT_SUPPORTED;
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}
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}
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else
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{
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/* Not the right interface */
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Status = STATUS_INVALID_PARAMETER_5;
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}
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/* Return the status */
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return Status;
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}
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/* EOF */
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