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![Hermès Bélusca-Maïto](/assets/img/avatar_default.png)
The idea then would be to have the following behaviour (when specifying the following options in the kernel command line): /DEBUGPORT=COMi --> load KDCOM.DLL and use COMi port (i == 1,2,3,4) if possible. /DEBUGPORT=FOO --> load KDFOO.DLL (useful for KDUSB.DLL, KD1394.DLL, KDBAZIS.DLL for VirtualKD, etc...) /DEBUGPORT=ROSDBG:[COMi|SCREEN|FILE|GDB|...] --> load KDROSDBG.DLL which contains the ROS kernel debugger, and use COMi or SCREEN or... as output port. svn path=/branches/kd++/; revision=58883
187 lines
6.4 KiB
C
187 lines
6.4 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/fstub/translate.c
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* PURPOSE: Interrupt Translator Routines
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* PROGRAMMERS: Pierre Schweitzer (pierre.schweitzer@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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/* PRIVATE FUNCTIONS *********************************************************/
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/*
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* @implemented
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*/
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VOID
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NTAPI
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FstubTranslatorNull(PVOID Context)
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{
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PAGED_CODE();
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/* Do nothing */
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return;
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}
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/*
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* @implemented
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*/
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NTSTATUS
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NTAPI
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FstubTranslateResource(IN OUT PVOID Context OPTIONAL,
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IN PCM_PARTIAL_RESOURCE_DESCRIPTOR Source,
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IN RESOURCE_TRANSLATION_DIRECTION Direction,
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IN ULONG AlternativesCount OPTIONAL,
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IN IO_RESOURCE_DESCRIPTOR Alternatives[],
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IN PDEVICE_OBJECT PhysicalDeviceObject,
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OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR Target)
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{
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KIRQL Irql;
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KAFFINITY Affinity;
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ULONG MinimumVector, Vector, k;
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PIO_RESOURCE_DESCRIPTOR Alternative;
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NTSTATUS Status = STATUS_UNSUCCESSFUL;
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PAGED_CODE();
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ASSERT(Source->Type == CmResourceTypeInterrupt);
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/* Copy common information */
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Target->Type = Source->Type;
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Target->ShareDisposition = Source->ShareDisposition;
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Target->Flags = Source->Flags;
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if (Direction == TranslateChildToParent)
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{
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/* Get IRQL, affinity & system vector for the device vector */
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Target->u.Interrupt.Vector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
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Source->u.Interrupt.Vector,
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Source->u.Interrupt.Vector,
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&Irql, &Affinity);
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Target->u.Interrupt.Level = Irql;
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Target->u.Interrupt.Affinity = Affinity;
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Status = STATUS_TRANSLATION_COMPLETE;
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}
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else if (Direction == TranslateParentToChild)
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{
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/* Browse all the resources */
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for (k = 0; k < AlternativesCount; k++)
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{
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Alternative = &(Alternatives[k]);
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ASSERT(Alternative->Type == CmResourceTypeInterrupt);
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/* Try to find the device vector, proceeding by trial & error
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* We try a vector, and translate it
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*/
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MinimumVector = Alternative->u.Interrupt.MinimumVector;
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while (MinimumVector <= Alternative->u.Interrupt.MaximumVector)
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{
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/* Translate the vector */
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Vector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
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MinimumVector,
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MinimumVector,
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&Irql, &Affinity);
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/* If the translated vector is matching the given translated vector */
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if (Vector == Source->u.Interrupt.Vector)
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{
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/* We are done, send back device vector */
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Target->u.Interrupt.Affinity = -1;
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Target->u.Interrupt.Vector = MinimumVector;
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Target->u.Interrupt.Level = MinimumVector;
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return STATUS_SUCCESS;
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}
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MinimumVector++;
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}
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}
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}
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return Status;
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}
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/*
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* @implemented
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*/
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NTSTATUS
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NTAPI
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FstubTranslateRequirement(IN OUT PVOID Context OPTIONAL,
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IN PIO_RESOURCE_DESCRIPTOR Source,
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IN PDEVICE_OBJECT PhysicalDeviceObject,
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OUT PULONG TargetCount,
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OUT PIO_RESOURCE_DESCRIPTOR *Target)
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{
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KIRQL Irql;
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KAFFINITY Affinity;
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PAGED_CODE();
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ASSERT(Source->Type == CmResourceTypeInterrupt);
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/* Allocate output buffer */
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*Target = ExAllocatePoolWithTag(PagedPool, sizeof(IO_RESOURCE_DESCRIPTOR), 'btsF');
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if (!*Target)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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/* Zero & set out count to 1 */
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RtlZeroMemory(*Target, sizeof(IO_RESOURCE_DESCRIPTOR));
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*TargetCount = 1;
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/* Translate minimum interrupt vector */
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(*Target)->u.Interrupt.MinimumVector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
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Source->u.Interrupt.MinimumVector,
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Source->u.Interrupt.MinimumVector,
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&Irql, &Affinity);
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/* Translate maximum interrupt vector */
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(*Target)->u.Interrupt.MaximumVector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
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Source->u.Interrupt.MaximumVector,
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Source->u.Interrupt.MaximumVector,
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&Irql, &Affinity);
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return STATUS_TRANSLATION_COMPLETE;
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}
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/*
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* @implemented
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*/
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NTSTATUS
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NTAPI
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xHalGetInterruptTranslator(IN INTERFACE_TYPE ParentInterfaceType,
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IN ULONG ParentBusNumber,
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IN INTERFACE_TYPE BridgeInterfaceType,
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IN USHORT Size,
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IN USHORT Version,
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OUT PTRANSLATOR_INTERFACE Translator,
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OUT PULONG BridgeBusNumber)
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{
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PAGED_CODE();
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ASSERT(Version == HAL_IRQ_TRANSLATOR_VERSION);
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ASSERT(Size >= sizeof(TRANSLATOR_INTERFACE));
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/* Only (E)ISA interfaces are supported */
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if (BridgeInterfaceType == Internal || BridgeInterfaceType >= MicroChannel)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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/* Fill in output struct */
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Translator->Size = sizeof(TRANSLATOR_INTERFACE);
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Translator->Version = HAL_IRQ_TRANSLATOR_VERSION;
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/* In case caller set interface to undefined, faulty it to ISA */
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Translator->Context = (PVOID)((BridgeInterfaceType == InterfaceTypeUndefined) ? Isa : BridgeInterfaceType);
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Translator->InterfaceReference = FstubTranslatorNull;
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Translator->InterfaceDereference = FstubTranslatorNull;
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Translator->TranslateResources = FstubTranslateResource;
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Translator->TranslateResourceRequirements = FstubTranslateRequirement;
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return STATUS_SUCCESS;
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}
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