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https://github.com/reactos/reactos.git
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104 lines
3.1 KiB
C
104 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/intrface/tr_irq.c
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* PURPOSE: IRQ Translator Interface
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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 TranslatorInterfaceInterrupt =
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{
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&GUID_TRANSLATOR_INTERFACE_STANDARD,
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sizeof(TRANSLATOR_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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PciTrans_Interrupt,
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tranirq_Constructor,
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tranirq_Initializer
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};
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/* FUNCTIONS ******************************************************************/
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NTSTATUS
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NTAPI
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tranirq_Initializer(IN PVOID Instance)
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{
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UNREFERENCED_PARAMETER(Instance);
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/* PnP Interfaces don't get Initialized */
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ASSERTMSG("PCI tranirq_Initializer, unexpected call.\n", FALSE);
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return STATUS_UNSUCCESSFUL;
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}
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NTSTATUS
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NTAPI
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tranirq_Constructor(IN PVOID DeviceExtension,
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IN PVOID Instance,
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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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ULONG BaseBus, ParentBus;
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INTERFACE_TYPE ParentInterface;
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ASSERT_FDO(FdoExtension);
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UNREFERENCED_PARAMETER(Instance);
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UNREFERENCED_PARAMETER(Version);
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UNREFERENCED_PARAMETER(Size);
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/* Make sure it's the right resource type */
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if ((ULONG_PTR)InterfaceData != CmResourceTypeInterrupt)
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{
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/* Fail this invalid request */
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DPRINT1("PCI - IRQ trans constructor doesn't like %p in InterfaceSpecificData\n",
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InterfaceData);
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return STATUS_INVALID_PARAMETER_3;
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}
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/* Get the bus, and use this as the interface-specific data */
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BaseBus = FdoExtension->BaseBus;
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InterfaceData = UlongToPtr(BaseBus);
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/* Check if this is the root bus */
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if (PCI_IS_ROOT_FDO(FdoExtension))
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{
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/* It is, so there is no parent, and it's connected on the system bus */
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ParentBus = 0;
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ParentInterface = Internal;
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DPRINT1(" Is root FDO\n");
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}
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else
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{
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/* It's not, so we have to get the root bus' bus number instead */
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#if 0 // when have PDO commit
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ParentBus = FdoExtension->PhysicalDeviceObject->DeviceExtension->ParentFdoExtension->BaseBus;
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ParentInterface = PCIBus;
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DPRINT1(" Is bridge FDO, parent bus %x, secondary bus %x\n",
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ParentBus, BaseBus);
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#endif
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}
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/* Now call the legacy HAL interface to get the correct translator */
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return HalGetInterruptTranslator(ParentInterface,
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ParentBus,
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PCIBus,
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sizeof(TRANSLATOR_INTERFACE),
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0,
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(PTRANSLATOR_INTERFACE)Interface,
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(PULONG)&InterfaceData);
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}
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/* EOF */
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