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windows-nt/Source/XPSP1/NT/base/hals/halacpi/pmisabus.c

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/*++
Copyright (c) 1997 Microsoft Corporation
Module Name:
pmapic.c
Abstract:
Implements functions specific to ISA busses
in ACPI-APIC machines.
Author:
Jake Oshins (jakeo) 11-October-1997
Environment:
Kernel mode only.
Revision History:
--*/
#include "halp.h"
#include "acpitabl.h"
NTSTATUS
TranslateGlobalVectorToIsaVector(
IN ULONG GlobalVector,
OUT PULONG IsaVector
);
NTSTATUS
HalacpiIrqTranslateResourceRequirementsIsa(
IN PVOID Context,
IN PIO_RESOURCE_DESCRIPTOR Source,
IN PDEVICE_OBJECT PhysicalDeviceObject,
OUT PULONG TargetCount,
OUT PIO_RESOURCE_DESCRIPTOR *Target
);
NTSTATUS
HalacpiIrqTranslateResourcesIsa(
IN PVOID Context,
IN PCM_PARTIAL_RESOURCE_DESCRIPTOR Source,
IN RESOURCE_TRANSLATION_DIRECTION Direction,
IN ULONG AlternativesCount, OPTIONAL
IN IO_RESOURCE_DESCRIPTOR Alternatives[], OPTIONAL
IN PDEVICE_OBJECT PhysicalDeviceObject,
OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR Target
);
extern ULONG HalpPicVectorRedirect[];
extern FADT HalpFixedAcpiDescTable;
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, TranslateGlobalVectorToIsaVector)
#pragma alloc_text(PAGE, HalacpiIrqTranslateResourceRequirementsIsa)
#pragma alloc_text(PAGE, HalacpiIrqTranslateResourcesIsa)
#pragma alloc_text(PAGE, HalacpiGetInterruptTranslator)
#endif
#define TranslateIsaVectorToGlobalVector(vector) \
(HalpPicVectorRedirect[vector])
NTSTATUS
TranslateGlobalVectorToIsaVector(
IN ULONG GlobalVector,
OUT PULONG IsaVector
)
{
UCHAR i;
for (i = 0; i < PIC_VECTORS; i++) {
if (HalpPicVectorRedirect[i] == GlobalVector) {
*IsaVector = i;
return STATUS_SUCCESS;
}
}
return STATUS_NOT_FOUND;
}
NTSTATUS
HalacpiIrqTranslateResourceRequirementsIsa(
IN PVOID Context,
IN PIO_RESOURCE_DESCRIPTOR Source,
IN PDEVICE_OBJECT PhysicalDeviceObject,
OUT PULONG TargetCount,
OUT PIO_RESOURCE_DESCRIPTOR *Target
)
/*++
Routine Description:
This function is basically a wrapper for
HalIrqTranslateResourceRequirementsRoot that understands
the weirdnesses of the ISA bus.
Arguments:
Return Value:
status
--*/
{
PIO_RESOURCE_DESCRIPTOR modSource, target, rootTarget;
NTSTATUS status;
BOOLEAN deleteResource;
ULONG sourceCount = 0;
ULONG targetCount = 0;
ULONG resource, resourceLength;
ULONG rootCount;
ULONG irq, startIrq, endIrq;
ULONG maxTargets;
PAGED_CODE();
ASSERT(Source->Type == CmResourceTypeInterrupt);
maxTargets = Source->u.Interrupt.MaximumVector -
Source->u.Interrupt.MinimumVector + 3;
resourceLength = sizeof(IO_RESOURCE_DESCRIPTOR) * maxTargets;
modSource = ExAllocatePoolWithTag(PagedPool, resourceLength, HAL_POOL_TAG);
if (!modSource) {
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(modSource, resourceLength);
//
// Is the PIC_SLAVE_IRQ in this resource?
//
if ((Source->u.Interrupt.MinimumVector <= PIC_SLAVE_IRQ) &&
(Source->u.Interrupt.MaximumVector >= PIC_SLAVE_IRQ)) {
//
// Clip the maximum
//
if (Source->u.Interrupt.MinimumVector < PIC_SLAVE_IRQ) {
modSource[sourceCount] = *Source;
modSource[sourceCount].u.Interrupt.MinimumVector =
Source->u.Interrupt.MinimumVector;
modSource[sourceCount].u.Interrupt.MaximumVector =
PIC_SLAVE_IRQ - 1;
sourceCount++;
}
//
// Clip the minimum
//
if (Source->u.Interrupt.MaximumVector > PIC_SLAVE_IRQ) {
modSource[sourceCount] = *Source;
modSource[sourceCount].u.Interrupt.MaximumVector =
Source->u.Interrupt.MaximumVector;
modSource[sourceCount].u.Interrupt.MinimumVector =
PIC_SLAVE_IRQ + 1;
sourceCount++;
}
//
// In ISA machines, the PIC_SLAVE_IRQ is rerouted
// to PIC_SLAVE_REDIRECT. So find out if PIC_SLAVE_REDIRECT
// is within this list. If it isn't we need to add it.
//
if (!((Source->u.Interrupt.MinimumVector <= PIC_SLAVE_REDIRECT) &&
(Source->u.Interrupt.MaximumVector >= PIC_SLAVE_REDIRECT))) {
modSource[sourceCount] = *Source;
modSource[sourceCount].u.Interrupt.MinimumVector = PIC_SLAVE_REDIRECT;
modSource[sourceCount].u.Interrupt.MaximumVector = PIC_SLAVE_REDIRECT;
sourceCount++;
}
} else {
*modSource = *Source;
sourceCount = 1;
}
//
// Clip out the SCI vector, if it is here. Also limit the vectors
// to those that might be on an ISA bus.
//
for (resource = 0; resource < sourceCount; resource++) {
//
// Make sure that all values are within ISA ranges.
//
if ((modSource[resource].u.Interrupt.MaximumVector >= PIC_VECTORS) ||
(modSource[resource].u.Interrupt.MinimumVector >= PIC_VECTORS)) {
ExFreePool(modSource);
return STATUS_UNSUCCESSFUL;
}
if ((modSource[resource].u.Interrupt.MinimumVector <=
HalpFixedAcpiDescTable.sci_int_vector) &&
(modSource[resource].u.Interrupt.MaximumVector >=
HalpFixedAcpiDescTable.sci_int_vector)) {
//
// The SCI vector is within this range.
//
if (modSource[resource].u.Interrupt.MinimumVector <
HalpFixedAcpiDescTable.sci_int_vector) {
//
// Put a new range on the end of modSource.
//
modSource[sourceCount].u.Interrupt.MinimumVector =
modSource[resource].u.Interrupt.MinimumVector;
modSource[sourceCount].u.Interrupt.MaximumVector =
HalpFixedAcpiDescTable.sci_int_vector - 1;
sourceCount++;
}
if (modSource[resource].u.Interrupt.MaximumVector >
HalpFixedAcpiDescTable.sci_int_vector) {
//
// Put a new range on the end of modSource.
//
modSource[sourceCount].u.Interrupt.MinimumVector =
HalpFixedAcpiDescTable.sci_int_vector + 1;
modSource[sourceCount].u.Interrupt.MaximumVector =
modSource[resource].u.Interrupt.MaximumVector;
sourceCount++;
}
//
// Now remove the range that we just broke up.
//
RtlMoveMemory(modSource + resource,
modSource + resource + 1,
sizeof(IO_RESOURCE_DESCRIPTOR) *
(sourceCount - resource));
sourceCount--;
}
}
target = ExAllocatePoolWithTag(PagedPool, resourceLength, HAL_POOL_TAG);
if (!target) {
ExFreePool(modSource);
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(target, resourceLength);
//
// Now translate each range from ISA vectors to ACPI
// "global system interrupt vectors." Since GSIVs aren't
// necessarily contiguous with respect to the ISA vectors,
// this may involve breaking each range up into smaller
// ranges, each independently translated into the GSIV space.
//
for (resource = 0; resource < sourceCount; resource++) {
//
// For each existing resource, start with the minimum
// and maximum, unchanged.
//
irq = modSource[resource].u.Interrupt.MinimumVector;
endIrq = modSource[resource].u.Interrupt.MaximumVector;
do {
//
// Now cycle through every IRQ in this range, testing
// to see if its translated value is contiguous
// with respect to the translated value of the next
// IRQ in the range.
//
startIrq = irq;
for (; irq < endIrq; irq++) {
if (TranslateIsaVectorToGlobalVector(irq) + 1 !=
TranslateIsaVectorToGlobalVector(irq + 1)) {
//
// This range is not contiguous. Stop now
// and create a target range.
//
break;
}
}
//
// Clone the source descriptor
//
target[targetCount] = *Source;
//
// Fill in the relevant changes.
//
target[targetCount].u.Interrupt.MinimumVector =
TranslateIsaVectorToGlobalVector(startIrq);
target[targetCount].u.Interrupt.MaximumVector =
TranslateIsaVectorToGlobalVector(irq);
ASSERT(target[targetCount].u.Interrupt.MinimumVector <=
target[targetCount].u.Interrupt.MaximumVector);
targetCount++;
} while (irq != endIrq);
}
*TargetCount = targetCount;
if (targetCount > 0) {
*Target = target;
} else {
ExFreePool(target);
}
ExFreePool(modSource);
return STATUS_SUCCESS;
}
NTSTATUS
HalacpiIrqTranslateResourcesIsa(
IN PVOID Context,
IN PCM_PARTIAL_RESOURCE_DESCRIPTOR Source,
IN RESOURCE_TRANSLATION_DIRECTION Direction,
IN ULONG AlternativesCount, OPTIONAL
IN IO_RESOURCE_DESCRIPTOR Alternatives[], OPTIONAL
IN PDEVICE_OBJECT PhysicalDeviceObject,
OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR Target
)
/*++
Routine Description:
This function is basically a wrapper for
HalIrqTranslateResourcesRoot that understands
the weirdnesses of the ISA bus.
Arguments:
Return Value:
status
--*/
{
NTSTATUS status;
BOOLEAN usePicSlave = FALSE;
ULONG i;
ULONG vector;
PAGED_CODE();
ASSERT(Source->Type == CmResourceTypeInterrupt);
//
// Copy everything
//
*Target = *Source;
switch (Direction) {
case TranslateChildToParent:
Target->u.Interrupt.Level =
TranslateIsaVectorToGlobalVector(Source->u.Interrupt.Level);
Target->u.Interrupt.Vector =
TranslateIsaVectorToGlobalVector(Source->u.Interrupt.Vector);
break;
case TranslateParentToChild:
status = TranslateGlobalVectorToIsaVector(Source->u.Interrupt.Level,
&vector);
if (!NT_SUCCESS(status)) {
return status;
}
Target->u.Interrupt.Level = vector;
status = TranslateGlobalVectorToIsaVector(Source->u.Interrupt.Vector,
&vector);
if (!NT_SUCCESS(status)) {
return status;
}
Target->u.Interrupt.Vector = vector;
//
// Because the ISA interrupt controller is
// cascaded, there is one case where there is
// a two-to-one mapping for interrupt sources.
// (On a PC, both 2 and 9 trigger vector 9.)
//
// We need to account for this and deliver the
// right value back to the driver.
//
if (Target->u.Interrupt.Level == PIC_SLAVE_REDIRECT) {
//
// Search the Alternatives list. If it contains
// PIC_SLAVE_IRQ but not PIC_SLAVE_REDIRECT,
// we should return PIC_SLAVE_IRQ.
//
for (i = 0; i < AlternativesCount; i++) {
if ((Alternatives[i].u.Interrupt.MinimumVector >= PIC_SLAVE_REDIRECT) &&
(Alternatives[i].u.Interrupt.MaximumVector <= PIC_SLAVE_REDIRECT)) {
//
// The list contains, PIC_SLAVE_REDIRECT. Stop
// looking.
//
usePicSlave = FALSE;
break;
}
if ((Alternatives[i].u.Interrupt.MinimumVector >= PIC_SLAVE_IRQ) &&
(Alternatives[i].u.Interrupt.MaximumVector <= PIC_SLAVE_IRQ)) {
//
// The list contains, PIC_SLAVE_IRQ. Use it
// unless we find PIC_SLAVE_REDIRECT later.
//
usePicSlave = TRUE;
}
}
if (usePicSlave) {
Target->u.Interrupt.Level = PIC_SLAVE_IRQ;
Target->u.Interrupt.Vector = PIC_SLAVE_IRQ;
}
}
break;
}
return STATUS_SUCCESS;
}
NTSTATUS
HalacpiGetInterruptTranslator(
IN INTERFACE_TYPE ParentInterfaceType,
IN ULONG ParentBusNumber,
IN INTERFACE_TYPE BridgeInterfaceType,
IN USHORT Size,
IN USHORT Version,
OUT PTRANSLATOR_INTERFACE Translator,
OUT PULONG BridgeBusNumber
)
/*++
Routine Description:
Arguments:
ParentInterfaceType - The type of the bus the bridge lives on (normally PCI).
ParentBusNumber - The number of the bus the bridge lives on.
ParentSlotNumber - The slot number the bridge lives in (where valid).
BridgeInterfaceType - The bus type the bridge provides (ie ISA for a PCI-ISA bridge).
ResourceType - The resource type we want to translate.
Size - The size of the translator buffer.
Version - The version of the translator interface requested.
Translator - Pointer to the buffer where the translator should be returned
BridgeBusNumber - Pointer to where the bus number of the bridge bus should be returned
Return Value:
Returns the status of this operation.
--*/
{
PAGED_CODE();
UNREFERENCED_PARAMETER(ParentInterfaceType);
UNREFERENCED_PARAMETER(ParentBusNumber);
ASSERT(Version == HAL_IRQ_TRANSLATOR_VERSION);
ASSERT(Size >= sizeof (TRANSLATOR_INTERFACE));
switch (BridgeInterfaceType) {
case Eisa:
case Isa:
case InterfaceTypeUndefined: // special "IDE" cookie
//
// Pass back an interface for an IRQ translator for
// the (E)ISA interrupts.
//
RtlZeroMemory(Translator, sizeof (TRANSLATOR_INTERFACE));
Translator->Size = sizeof (TRANSLATOR_INTERFACE);
Translator->Version = HAL_IRQ_TRANSLATOR_VERSION;
Translator->InterfaceReference = &HalTranslatorReference;
Translator->InterfaceDereference = &HalTranslatorDereference;
Translator->TranslateResources = &HalacpiIrqTranslateResourcesIsa;
Translator->TranslateResourceRequirements = &HalacpiIrqTranslateResourceRequirementsIsa;
return STATUS_SUCCESS;
default:
return STATUS_NOT_IMPLEMENTED;
}
}
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