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[NTOSKRNL]

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Implemented FstubTranslatorNull, FstubTranslateResource, FstubTranslateRequirement, xHalGetInterruptTranslator.
In other words: please welcome interrupt translator in ReactOS.
It's not used yet.

svn path=/trunk/; revision=51012
This commit is contained in:
Pierre Schweitzer 2011-03-10 21:02:21 +00:00
parent 8afa712c7a
commit 81f9d934ff
4 changed files with 201 additions and 1 deletions
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2
reactos/ntoskrnl/fstub/halstub.c
View file

@ -32,7 +32,7 @@ HAL_DISPATCH HalDispatchTable =
(pHalInitPnpDriver)NULL,
(pHalInitPowerManagement)NULL,
(pHalGetDmaAdapter) NULL,
(pHalGetInterruptTranslator)NULL,
xHalGetInterruptTranslator,
(pHalStartMirroring)NULL,
(pHalEndMirroring)NULL,
(pHalMirrorPhysicalMemory)NULL,

189
reactos/ntoskrnl/fstub/translate.c Normal file
View file

@ -0,0 +1,189 @@
/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL - See COPYING in the top level directory
* FILE: ntoskrnl/fstub/translate.c
* PURPOSE: Interrupt Translator Routines
* PROGRAMMERS: Pierre Schweitzer (pierre.schweitzer@reactos.org)
*/
/* INCLUDES ******************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
#define HAL_IRQ_TRANSLATOR_VERSION 0x0
/* PRIVATE FUNCTIONS *********************************************************/
/*
* @implemented
*/
VOID
NTAPI
FstubTranslatorNull(PVOID Context)
{
PAGED_CODE();
/* Do nothing */
return;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
FstubTranslateResource(IN OUT PVOID Context OPTIONAL,
IN PCM_PARTIAL_RESOURCE_DESCRIPTOR Source,
IN RESOURCE_TRANSLATION_DIRECTION Direction,
IN ULONG AlternativesCount OPTIONAL,
IN IO_RESOURCE_DESCRIPTOR Alternatives[],
IN PDEVICE_OBJECT PhysicalDeviceObject,
OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR Target)
{
INT k;
KIRQL Irql;
KAFFINITY Affinity;
ULONG MinimumVector, Vector;
PIO_RESOURCE_DESCRIPTOR Alternative;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PAGED_CODE();
ASSERT(Source->Type == CmResourceTypeInterrupt);
/* Copy common information */
Target->Type = Source->Type;
Target->ShareDisposition = Source->ShareDisposition;
Target->Flags = Source->Flags;
if (Direction == TranslateChildToParent)
{
/* Get IRQL, affinity & system vector for the device vector */
Target->u.Interrupt.Vector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
Source->u.Interrupt.Vector,
Source->u.Interrupt.Vector,
&Irql, &Affinity);
Target->u.Interrupt.Level = Irql;
Target->u.Interrupt.Affinity = Affinity;
Status = STATUS_TRANSLATION_COMPLETE;
}
else if (Direction == TranslateParentToChild)
{
/* Browse all the resources */
for (k = 0; k < AlternativesCount; k++)
{
Alternative = &(Alternatives[k]);
ASSERT(Alternative->Type == CmResourceTypeInterrupt);
/* Try to find the device vector, proceeding by trial & error
* We try a vector, and translate it
*/
MinimumVector = Alternative->u.Interrupt.MinimumVector;
while (MinimumVector <= Alternative->u.Interrupt.MaximumVector)
{
/* Translate the vector */
Vector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
MinimumVector,
MinimumVector,
&Irql, &Affinity);
/* If the translated vector is matching the given translated vector */
if (Vector == Source->u.Interrupt.Vector)
{
/* We are done, send back device vector */
Target->u.Interrupt.Affinity = -1;
Target->u.Interrupt.Vector = MinimumVector;
Target->u.Interrupt.Level = MinimumVector;
return STATUS_SUCCESS;
}
MinimumVector++;
}
}
}
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
FstubTranslateRequirement(IN OUT PVOID Context OPTIONAL,
IN PIO_RESOURCE_DESCRIPTOR Source,
IN PDEVICE_OBJECT PhysicalDeviceObject,
OUT PULONG TargetCount,
OUT PIO_RESOURCE_DESCRIPTOR *Target)
{
KIRQL Irql;
KAFFINITY Affinity;
PAGED_CODE();
ASSERT(Source->Type == CmResourceTypeInterrupt);
/* Allocate output buffer */
*Target = ExAllocatePoolWithTag(PagedPool, sizeof(IO_RESOURCE_DESCRIPTOR), 'btsF');
if (!*Target)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
/* Zero & set out count to 1 */
RtlZeroMemory(*Target, sizeof(IO_RESOURCE_DESCRIPTOR));
*TargetCount = 1;
/* Translate minimum interrupt vector */
(*Target)->u.Interrupt.MinimumVector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
Source->u.Interrupt.MinimumVector,
Source->u.Interrupt.MinimumVector,
&Irql, &Affinity);
/* Translate maximum interrupt vector */
(*Target)->u.Interrupt.MaximumVector = HalGetInterruptVector((INTERFACE_TYPE)Context, 0,
Source->u.Interrupt.MaximumVector,
Source->u.Interrupt.MaximumVector,
&Irql, &Affinity);
return STATUS_TRANSLATION_COMPLETE;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
xHalGetInterruptTranslator(IN INTERFACE_TYPE ParentInterfaceType,
IN ULONG ParentBusNumber,
IN INTERFACE_TYPE BridgeInterfaceType,
IN USHORT Size,
IN USHORT Version,
OUT PTRANSLATOR_INTERFACE Translator,
OUT PULONG BridgeBusNumber)
{
PAGED_CODE();
ASSERT(Version == HAL_IRQ_TRANSLATOR_VERSION);
ASSERT(Size >= sizeof(TRANSLATOR_INTERFACE));
/* Only (E)ISA interfaces are supported */
if (BridgeInterfaceType == Internal || BridgeInterfaceType >= MicroChannel)
{
return STATUS_NOT_IMPLEMENTED;
}
/* Fill in output struct */
Translator->Size = sizeof(TRANSLATOR_INTERFACE);
Translator->Version = HAL_IRQ_TRANSLATOR_VERSION;
/* In case caller set interface to undefined, faulty it to ISA */
Translator->Context = (PVOID)((BridgeInterfaceType == InterfaceTypeUndefined) ? Isa : BridgeInterfaceType);
Translator->InterfaceReference = FstubTranslatorNull;
Translator->InterfaceDereference = FstubTranslatorNull;
Translator->TranslateResources = FstubTranslateResource;
Translator->TranslateResourceRequirements = FstubTranslateRequirement;
return STATUS_SUCCESS;
}

10
reactos/ntoskrnl/include/internal/hal.h
View file

@ -71,6 +71,16 @@ xHalVectorToIDTEntry(
IN ULONG Vector
);
NTSTATUS
NTAPI
xHalGetInterruptTranslator(IN INTERFACE_TYPE ParentInterfaceType,
IN ULONG ParentBusNumber,
IN INTERFACE_TYPE BridgeInterfaceType,
IN USHORT Size,
IN USHORT Version,
OUT PTRANSLATOR_INTERFACE Translator,
OUT PULONG BridgeBusNumber);
//
// Various offsets in the boot record

1
reactos/ntoskrnl/ntoskrnl-generic.rbuild
View file

@ -285,6 +285,7 @@
<file>disksup.c</file>
<file>fstubex.c</file>
<file>halstub.c</file>
<file>translate.c</file>
</directory>
<directory name="inbv">
<file>inbv.c</file>