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windows-nt/Source/XPSP1/NT/base/busdrv/acpi/driver/nt/root.c
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/*++
Copyright (c) 1996 Microsoft Corporation
Module Name:
root.c
Abstract:
This module contains the root FDO handler for the NT Driver
Author:
Stephane Plante (splante)
Environment:
NT Kernel Model Driver only
Revision History:
July-09-97 Added support to Unify QueryDeviceRelations from filter.c
--*/
#include "pch.h"
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, ACPIRootIrpCancelRemoveOrStopDevice)
#pragma alloc_text(PAGE, ACPIRootIrpQueryBusRelations)
#pragma alloc_text(PAGE, ACPIRootIrpQueryCapabilities)
#pragma alloc_text(PAGE, ACPIRootIrpQueryDeviceRelations)
#pragma alloc_text(PAGE, ACPIRootIrpQueryRemoveOrStopDevice)
#pragma alloc_text(PAGE, ACPIRootIrpStartDevice)
#pragma alloc_text(PAGE, ACPIRootIrpStopDevice)
#pragma alloc_text(PAGE, ACPIRootIrpQueryInterface)
#endif
NTSTATUS
ACPIRootIrpCancelRemoveOrStopDevice(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine transitions the device from the inactive to the
started state
Arguments:
DeviceObject - The target
Irp - The request
Return Value:
NTSTATUS
--*/
{
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
UCHAR minorFunction = irpStack->MinorFunction;
PAGED_CODE();
//
// Where we allowed to stop the device? If so, then undo whatever it
// was we did, otherwise let the world know about the cancel
//
if (!(deviceExtension->Flags & DEV_CAP_NO_STOP) ) {
//
// Check to see if we have placed this device in the inactive state
//
if (deviceExtension->DeviceState == Inactive) {
//
// Mark the device state to its previous state
//
deviceExtension->DeviceState = deviceExtension->PreviousState;
}
}
//
// We are successfull
//
Irp->IoStatus.Status = status;
//
// Pass the Irp Along
//
Irp->IoStatus.Status = STATUS_SUCCESS ;
IoSkipCurrentIrpStackLocation( Irp );
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
//
// Done
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
return status;
}
NTSTATUS
ACPIRootIrpCompleteRoutine(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context
)
/*++
Routine Description:
This is the routine that is called when one of the IRPS that was
noticed by ACPIRootIrp* and was judged to be an IRP that we need
to examine later on...
Arguments:
DeviceObject - A pointer to the Filter Object
Irp - A pointer to the completed request
Context - Whatever Irp-dependent information we need to know
Return Value:
NTSTATUS
--*/
{
PKEVENT event = (PKEVENT) Context;
#if DBG
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
if (deviceExtension != NULL) {
//
// Let the world know what we just got...
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx (Complete)\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, irpStack->MinorFunction),
Irp->IoStatus.Status
) );
}
#endif
//
// Signal the event
//
KeSetEvent( event, IO_NO_INCREMENT, FALSE );
//
// Always return MORE_PROCESSING_REQUIRED
//
return STATUS_MORE_PROCESSING_REQUIRED;
}
NTSTATUS
ACPIRootIrpQueryBusRelations(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
OUT PDEVICE_RELATIONS *PdeviceRelations
)
/*++
Routine Description:
This routine is the dispatch point for the IRP_MN_QUERY_DEVICE_RELATIONS
requests sent to the Root or Filter Device Objects
Arguments:
DeviceObject - Pointer to the device object we received the request for
Irp - Pointer to the request
Return Value:
NTSTATUS
--*/
{
NTSTATUS detectStatus;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
PNSOBJ acpiObject = NULL;
UCHAR minorFunction = irpStack->MinorFunction;
PAGED_CODE();
//
// lets look at the ACPIObject that we have and we can see
// if it is valid
//
acpiObject = deviceExtension->AcpiObject;
ASSERT( acpiObject != NULL );
if (acpiObject == NULL) {
ACPIDevPrint( (
ACPI_PRINT_WARNING,
deviceExtension,
"(%#08lx): %s - Invalid ACPI Object %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
acpiObject
) );
//
// Fail the IRP.
//
return STATUS_INVALID_PARAMETER;
}
//
// Detect which PDOs are missing
//
detectStatus = ACPIDetectPdoDevices(
DeviceObject,
PdeviceRelations
);
//
// If something went well along the way, yell a bit
//
if ( !NT_SUCCESS(detectStatus) ) {
ACPIDevPrint( (
ACPI_PRINT_WARNING,
deviceExtension,
"(%#08lx): %s - Enum Failed %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
detectStatus
) );
}
//
// Detect which profile providers are missing
//
if ( NT_SUCCESS(detectStatus)) {
detectStatus = ACPIDetectDockDevices(
deviceExtension,
PdeviceRelations
);
//
// If something went well along the way, yell a bit
//
if ( !NT_SUCCESS(detectStatus) ) {
ACPIDevPrint( (
ACPI_PRINT_WARNING,
deviceExtension,
"(%#08lx): %s - Dock Enum Failed "
"%#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
detectStatus
) );
}
}
//
// Done
//
return detectStatus;
}
NTSTATUS
ACPIRootIrpQueryCapabilities(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine fills in the capabilities for the root device
Arguments:
DeviceObject - The object whose capabilities to get
Irp - The request
Return Value:
NTSTATUS
--*/
{
KEVENT event;
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_CAPABILITIES capabilities;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack;
UCHAR minorFunction;
PAGED_CODE();
//
// Setup the Event so that we are notified of when this done
//
KeInitializeEvent( &event, SynchronizationEvent, FALSE );
//
// Copy the stack location
//
IoCopyCurrentIrpStackLocationToNext( Irp );
//
// We want our completion routine to fire...
//
IoSetCompletionRoutine(
Irp,
ACPIRootIrpCompleteRoutine,
&event,
TRUE,
TRUE,
TRUE
);
//
// Let the IRP execute
//
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
if (status == STATUS_PENDING) {
//
// Wait for it
//
KeWaitForSingleObject(
&event,
Executive,
KernelMode,
FALSE,
NULL
);
//
// Grab the 'real' status
//
status = Irp->IoStatus.Status;
}
//
// Look at the current stack location
//
irpStack = IoGetCurrentIrpStackLocation( Irp );
minorFunction = irpStack->MinorFunction;
//
// What happened?
//
if (!NT_SUCCESS(status)) {
//
// Failure
//
goto ACPIRootIrpQueryCapabilitiesExit;
}
//
// Grab a pointer to the capabilitites
//
capabilities = irpStack->Parameters.DeviceCapabilities.Capabilities;
#ifndef HANDLE_BOGUS_CAPS
if (capabilities->Version < 1) {
//
// do not touch irp!
//
goto ACPIRootIrpQueryCapabilitiesExit;
}
#endif
//
// Set the capabilities that we know about
//
capabilities->LockSupported = FALSE;
capabilities->EjectSupported = FALSE;
capabilities->Removable = FALSE;
capabilities->UINumber = (ULONG) -1;
capabilities->UniqueID = TRUE;
capabilities->RawDeviceOK = FALSE;
capabilities->SurpriseRemovalOK = FALSE;
capabilities->Address = (ULONG) -1;
capabilities->DeviceWake = PowerDeviceUnspecified;
capabilities->SystemWake = PowerDeviceUnspecified;
//
// build the power table properly yet?
//
status = ACPISystemPowerInitializeRootMapping(
deviceExtension,
capabilities
);
if (!NT_SUCCESS(status)) {
ACPIDevPrint( (
ACPI_PRINT_CRITICAL,
deviceExtension,
"(0x%08lx): %s - InitializeRootMapping = %08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
goto ACPIRootIrpQueryCapabilitiesExit;
}
ACPIRootIrpQueryCapabilitiesExit:
//
// Have happily finished with this irp
//
Irp->IoStatus.Status = status;
//
// Complete the Irp
//
IoCompleteRequest( Irp, IO_NO_INCREMENT );
//
// Done
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
return status;
}
NTSTATUS
ACPIRootIrpQueryDeviceRelations(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine is the dispatch point for the IRP_MN_QUERY_DEVICE_RELATIONS
requests sent to the Root or Filter Device Objects
Arguments:
DeviceObject - Pointer to the device object we received the request for
Irp - Pointer to the request
Return Value:
NTSTATUS
--*/
{
BOOLEAN checkForFilters = FALSE;
KEVENT queryEvent;
NTSTATUS status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PDEVICE_RELATIONS deviceRelations = (PDEVICE_RELATIONS) Irp->IoStatus.Information;
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
UCHAR minorFunction = irpStack->MinorFunction;
NTSTATUS detectStatus;
PAGED_CODE();
switch(irpStack->Parameters.QueryDeviceRelations.Type) {
case BusRelations:
//
// Remember to check for filters later on...
//
checkForFilters = TRUE;
//
// Get the real bus relations
//
status = ACPIRootIrpQueryBusRelations(
DeviceObject,
Irp,
&deviceRelations
);
break ;
default:
status = STATUS_NOT_SUPPORTED ;
ACPIDevPrint( (
ACPI_PRINT_WARNING,
deviceExtension,
"(%#08lx): %s - Unhandled Type %d\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
irpStack->Parameters.QueryDeviceRelations.Type
) );
break ;
}
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s (d) = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
if (NT_SUCCESS(status)) {
//
// Pass the IRP status along
//
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = (ULONG_PTR) deviceRelations;
} else if ((status != STATUS_NOT_SUPPORTED) && (deviceRelations == NULL)) {
//
// If we haven't succeed the irp, then we can also fail it
//
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = (ULONG_PTR) NULL;
IoCompleteRequest( Irp, IO_NO_INCREMENT );
return status;
} else {
//
// Either someone above us added an entry or we did not have anything
// to add. Therefore, we do not touch this IRP, but simply pass it down.
//
}
//
// Initialize an event so that we can block
//
KeInitializeEvent( &queryEvent, SynchronizationEvent, FALSE );
//
// If we succeeded, then we must set a completion routine so that we
// can do some post-processing
//
IoCopyCurrentIrpStackLocationToNext( Irp );
IoSetCompletionRoutine(
Irp,
ACPIRootIrpCompleteRoutine,
&queryEvent,
TRUE,
TRUE,
TRUE
);
//
// Pass the irp along
//
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
//
// Wait for it to come back...
//
if (status == STATUS_PENDING) {
KeWaitForSingleObject(
&queryEvent,
Executive,
KernelMode,
FALSE,
NULL
);
//
// Grab the 'real' status
//
status = Irp->IoStatus.Status;
}
//
// Read back the device relations (they may have changed)
//
deviceRelations = (PDEVICE_RELATIONS) Irp->IoStatus.Information;
//
// If we succeeded, then we should try to load the filters
//
if ( (NT_SUCCESS(status) || (status == STATUS_NOT_SUPPORTED) ) &&
checkForFilters == TRUE) {
//
// Grab the device relations
//
detectStatus = ACPIDetectFilterDevices(
DeviceObject,
deviceRelations
);
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(0x%08lx): %s (u) = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
detectStatus
) );
}
//
// Done with the IRP
//
IoCompleteRequest( Irp, IO_NO_INCREMENT );
//
// Done
//
return status;
}
NTSTATUS
ACPIRootIrpQueryInterface(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine handles IRP_MN_QUERY_INTERFACE requests for the ACPI FDO.
It will eject an arbiter interface for interrupts.
Arguments:
DeviceObject - Pointer to the device object we received the request for
Irp - Pointer to the request
Return Value:
NTSTATUS
--*/
{
ARBITER_INTERFACE ArbiterTable;
CM_RESOURCE_TYPE resource;
NTSTATUS status;
GUID *interfaceType;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
ULONG count;
UCHAR minorFunction = irpStack->MinorFunction;
PAGED_CODE();
//
// Obtain the info we will need from the irp
//
resource = (CM_RESOURCE_TYPE)
PtrToUlong(irpStack->Parameters.QueryInterface.InterfaceSpecificData);
interfaceType = (LPGUID) irpStack->Parameters.QueryInterface.InterfaceType;
#if DBG
{
NTSTATUS status2;
UNICODE_STRING guidString;
status2 = RtlStringFromGUID( interfaceType, &guidString );
if (NT_SUCCESS(status2)) {
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(0x%08lx): %s - Res %x Type = %wZ\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, irpStack->MinorFunction),
resource,
&guidString
) );
RtlFreeUnicodeString( &guidString );
}
}
#endif
//
// *Only* Handle the Guids that we know about. Do Not Ever touch
// any other GUID
//
if ((CompareGuid(interfaceType, (PVOID) &GUID_ARBITER_INTERFACE_STANDARD)) &&
(resource == CmResourceTypeInterrupt)){
//
// Only copy up to current size of the ARBITER_INTERFACE structure
//
if (irpStack->Parameters.QueryInterface.Size >
sizeof (ARBITER_INTERFACE) ) {
count = sizeof (ARBITER_INTERFACE);
} else {
count = irpStack->Parameters.QueryInterface.Size;
}
ArbiterTable.Size = sizeof(ARBITER_INTERFACE);
ArbiterTable.Version = 1;
ArbiterTable.InterfaceReference = AcpiNullReference;
ArbiterTable.InterfaceDereference = AcpiNullReference;
ArbiterTable.ArbiterHandler = &ArbArbiterHandler;
ArbiterTable.Context = &AcpiArbiter.ArbiterState;
ArbiterTable.Flags = 0; // Do not set ARBITER_PARTIAL here
//
// Copy the arbiter table.
//
RtlCopyMemory(irpStack->Parameters.QueryInterface.Interface,
&ArbiterTable,
count);
Irp->IoStatus.Status = STATUS_SUCCESS;
}
//
// Done
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
Irp->IoStatus.Status
) );
return ACPIDispatchForwardIrp( DeviceObject, Irp );
}
NTSTATUS
ACPIRootIrpQueryPower(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine handles the QUERY_POWER sent to the root FDO. It succeeds
the query if ACPI supports the listed system state
Arguments:
DeviceObject - The Target
Irp - The Request
Return Value:
NTSTATUS
--*/
{
BOOLEAN passDown = TRUE;
NTSTATUS status = Irp->IoStatus.Status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpSp;
PNSOBJ object;
SYSTEM_POWER_STATE systemState;
ULONG objectName;
//
// Get the Current stack location to determine if we are a system
// irp or a device irp. We ignore device irps here.
//
irpSp = IoGetCurrentIrpStackLocation(Irp);
if (irpSp->Parameters.Power.Type != SystemPowerState) {
//
// We don't handle this irp
//
goto ACPIRootIrpQueryPowerExit;
}
if (irpSp->Parameters.Power.ShutdownType == PowerActionWarmEject) {
//
// We definately don't allow the ejection of this node
//
passDown = FALSE;
status = STATUS_INVALID_DEVICE_REQUEST;
goto ACPIRootIrpQueryPowerExit;
}
//
// What system state are we looking at?
//
systemState = irpSp->Parameters.Power.State.SystemState;
switch (systemState) {
case PowerSystemWorking: objectName = PACKED_S0; break;
case PowerSystemSleeping1: objectName = PACKED_S1; break;
case PowerSystemSleeping2: objectName = PACKED_S2; break;
case PowerSystemSleeping3: objectName = PACKED_S3; break;
case PowerSystemHibernate:
case PowerSystemShutdown:
status = STATUS_SUCCESS;
goto ACPIRootIrpQueryPowerExit;
default:
//
// We don't handle this IRP
//
passDown = FALSE;
status = STATUS_INVALID_DEVICE_REQUEST;
goto ACPIRootIrpQueryPowerExit;
}
//
// Does the object exist?
//
object = ACPIAmliGetNamedChild(
deviceExtension->AcpiObject->pnsParent,
objectName
);
if (object != NULL) {
status = STATUS_SUCCESS;
} else {
passDown = FALSE;
status = STATUS_INVALID_DEVICE_REQUEST;
}
ACPIRootIrpQueryPowerExit:
//
// Let the system know what we support and what we don't
//
Irp->IoStatus.Status = status;
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(0x%08lx): ACPIRootIrpQueryPower = %08lx\n",
Irp,
status
) );
//
// Should we pass the irp down or fail it?
//
if (passDown) {
//
// If we support the request then pass it down and give someone else a
// chance to veto it
//
return ACPIDispatchForwardPowerIrp( DeviceObject, Irp );
} else {
//
// If we failed the irp for whatever reason, the we should just complete
// the request now and continue along
//
PoStartNextPowerIrp( Irp );
IoCompleteRequest( Irp, IO_NO_INCREMENT );
return status;
}
}
NTSTATUS
ACPIRootIrpQueryRemoveOrStopDevice(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine transitions the device to the inactive state
Arguments:
DeviceObject - The target
Irp - The Request
Return Value:
NTSTATUS
--*/
{
NTSTATUS status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
UCHAR minorFunction = irpStack->MinorFunction;
PAGED_CODE();
//
// Are we allowed to stop the device?
//
if (deviceExtension->Flags & DEV_CAP_NO_STOP) {
//
// No, then fail the irp
//
Irp->IoStatus.Status = status = STATUS_INVALID_DEVICE_REQUEST;
IoCompleteRequest( Irp, IO_NO_INCREMENT );
} else {
//
// Mark the device state as inactive...
//
deviceExtension->PreviousState = deviceExtension->DeviceState;
deviceExtension->DeviceState = Inactive;
//
// Pass the Irp Along
//
IoSkipCurrentIrpStackLocation( Irp );
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
}
//
// Done
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
return status;
}
NTSTATUS
ACPIRootIrpRemoveDevice(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine is called when a filter object must remove itself...
Arguments:
DeviceObject - The DeviceObject that must be removed
Irp - The request to remove ourselves
Return Value:
--*/
{
LONG oldReferenceCount;
KIRQL oldIrql;
NTSTATUS status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PDEVICE_OBJECT targetObject;
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
UCHAR minorFunction = irpStack->MinorFunction;
//
// Set the device state as 'removed' ...
//
deviceExtension->DeviceState = Removed;
//
// Send on the remove IRP
//
IoSkipCurrentIrpStackLocation( Irp );
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
//
// Attempt to stop the device (if possible)
//
ACPIInitStopACPI( DeviceObject );
//
// Unregister WMI
//
#ifdef WMI_TRACING
ACPIWmiUnRegisterLog(DeviceObject);
#endif // WMI_TRACING
//
// Delete the useless set of resources
//
if (deviceExtension->ResourceList != NULL) {
ExFreePool( deviceExtension->ResourceList );
}
//
// Update the device extension ---
// we need to hold the lock for this
//
KeAcquireSpinLock( &AcpiDeviceTreeLock, &oldIrql );
//
// Step one is to zero out the things that we no longer care
// about
//
DeviceObject->DeviceExtension = NULL;
targetObject = deviceExtension->TargetDeviceObject;
deviceExtension->TargetDeviceObject = NULL;
deviceExtension->PhysicalDeviceObject = NULL;
deviceExtension->DeviceObject = NULL;
//
// Mark the node as being fresh and untouched
//
ACPIInternalUpdateFlags( &(deviceExtension->Flags), DEV_MASK_TYPE, TRUE );
ACPIInternalUpdateFlags( &(deviceExtension->Flags), DEV_TYPE_NOT_FOUND, FALSE );
ACPIInternalUpdateFlags( &(deviceExtension->Flags), DEV_TYPE_REMOVED, FALSE );
//
// The reference count should have value >= 1
//
oldReferenceCount = InterlockedDecrement(
&(deviceExtension->ReferenceCount)
);
ASSERT( oldReferenceCount >= 0 );
//
// Do we have to delete the node?
//
if (oldReferenceCount == 0) {
//
// Delete the extension
//
ACPIInitDeleteDeviceExtension( deviceExtension );
}
//
// Done with the lock
//
KeReleaseSpinLock( &AcpiDeviceTreeLock, oldIrql );
//
// Detach the device and delete the object
//
ASSERT( targetObject );
IoDetachDevice( targetObject );
IoDeleteDevice( DeviceObject );
//
// done
//
return STATUS_SUCCESS;
}
NTSTATUS
ACPIRootIrpSetPower (
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine is called to tell the Root device that the system is
going to sleep
Arguments:
DeviceObject - Device which represents the root of the ACPI tree
Irp - The request in question
Return Value:
NTSTATUS
--*/
{
KIRQL oldIrql;
NTSTATUS status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpSp;
//
// See if we need to bugcheck
//
if (AcpiSystemInitialized == FALSE) {
ACPIInternalError( ACPI_ROOT );
}
//
// Get the Current stack location to determine if we are a system
// irp or a device irp. We ignore device irps here.
//
irpSp = IoGetCurrentIrpStackLocation(Irp);
if (irpSp->Parameters.Power.Type != SystemPowerState) {
//
// We don't handle this irp
//
return ACPIDispatchForwardPowerIrp( DeviceObject, Irp );
}
//
// We are going to work on the Irp, so mark it as being SUCCESS
// for now
//
Irp->IoStatus.Status = STATUS_SUCCESS;
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(0x%08lx): ACPIRootIrpSetPower - S%d\n",
Irp,
irpSp->Parameters.Power.State.SystemState - PowerSystemWorking
) );
//
// Mark the irp as pending, and increment the irp count because a
// completion is going to be set
//
IoMarkIrpPending( Irp );
InterlockedIncrement( &(deviceExtension->OutstandingIrpCount) );
//
// Queue the request
//
status = ACPIDeviceIrpSystemRequest(
DeviceObject,
Irp,
ACPIDeviceIrpForwardRequest
);
//
// Did we return STATUS_MORE_PROCESSING_REQUIRED (which we used if
// we overloaded STATUS_PENDING)
//
if (status == STATUS_MORE_PROCESSING_REQUIRED) {
status = STATUS_PENDING;
}
//
// Done. Note: the callback function always gets called, so we don't
// have to worry about doing clean-up work here.
//
return status;
}
NTSTATUS
ACPIRootIrpStartDevice(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine is the dispatch point for the IRP_MN_START_DEVICE requests sent
to the Root (or FDO, take your pick, they are the same thing) device object
Arguments:
DeviceObject - Pointer to the device object we received the request for
Irp - Pointer to the request
Return Value:
NTSTATUS
--*/
{
KEVENT event;
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack;
UCHAR minorFunction;
PAGED_CODE();
//
// Request to start the device. The rule is that we must pass
// this down to the PDO before we can start the device ourselves
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(0x%08lx): ACPIRootIrpStartDevice\n",
Irp
) );
//
// Setup the Event so that we are notified of when this done
//
KeInitializeEvent( &event, SynchronizationEvent, FALSE );
//
// Copy the stack location
//
IoCopyCurrentIrpStackLocationToNext( Irp );
//
// We want our completion routine to fire...
//
IoSetCompletionRoutine(
Irp,
ACPIRootIrpCompleteRoutine,
&event,
TRUE,
TRUE,
TRUE
);
//
// Let the IRP execute
//
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
if (status == STATUS_PENDING) {
//
// Wait for it
//
KeWaitForSingleObject(
&event,
Executive,
KernelMode,
FALSE,
NULL
);
//
// Grab the 'real' status
//
status = Irp->IoStatus.Status;
}
//
// Get the current irp stack location
//
irpStack = IoGetCurrentIrpStackLocation( Irp );
minorFunction = irpStack->MinorFunction;
//
// What happened?
//
if (!NT_SUCCESS(status)) {
//
// Failure
//
goto ACPIRootIrpStartDeviceExit;
}
//
// Grab the translatted resource allocated for this device
//
deviceExtension->ResourceList =
(irpStack->Parameters.StartDevice.AllocatedResourcesTranslated ==
NULL) ? NULL:
RtlDuplicateCmResourceList(
NonPagedPool,
irpStack->Parameters.StartDevice.AllocatedResourcesTranslated,
ACPI_RESOURCE_POOLTAG
);
if (deviceExtension->ResourceList == NULL) {
ACPIDevPrint( (
ACPI_PRINT_CRITICAL,
deviceExtension,
" - Did not find a resource list!\n"
) );
KeBugCheckEx(
ACPI_BIOS_ERROR,
ACPI_ROOT_RESOURCES_FAILURE,
(ULONG_PTR) deviceExtension,
0,
0
);
}
//
// Start ACPI
//
status = ACPIInitStartACPI( DeviceObject );
//
// Update the status of the device
//
if (NT_SUCCESS(status)) {
deviceExtension->DeviceState = Started;
}
#if 0
status = ACPIRootUpdateRootResourcesWithHalResources();
if (!NT_SUCCESS(status)) {
ACPIDevPrint( (
ACPI_PRINT_CRITICAL,
deviceExtension,
"(0x%08lx): ACPIRootUpdateRootResourcesWithHalResources = %08lx\n",
Irp,
status
) );
}
#endif
ACPIRootIrpStartDeviceExit:
//
// Store and return the result
//
Irp->IoStatus.Status = status;
//
// Complete the Irp
//
IoCompleteRequest( Irp, IO_NO_INCREMENT );
//
// Done
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
return status;
}
NTSTATUS
ACPIRootIrpStopDevice(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This handles a request to stop the device
Arguments:
DeviceObject - The device to stop
Irp - The request to tell us how to do it...
Return Value:
NTSTATUS
--*/
{
NTSTATUS status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
UCHAR minorFunction = irpStack->MinorFunction;
PAGED_CODE();
//
// Note: we can only stop a device from within the Inactive state...
//
if (deviceExtension->DeviceState != Inactive) {
ASSERT( deviceExtension->DeviceState == Inactive );
Irp->IoStatus.Status = status = STATUS_INVALID_DEVICE_REQUEST;
IoCompleteRequest( Irp, IO_NO_INCREMENT );
goto ACPIRootIrpStopDeviceExit;
}
//
// Set the device as 'Stopped'
deviceExtension->DeviceState = Stopped;
//
// Send on the Stop IRP
//
IoSkipCurrentIrpStackLocation( Irp );
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
//
// Attempt to stop the device (if possible)
//
#if 1
ACPIInitStopACPI( DeviceObject );
#endif
ACPIRootIrpStopDeviceExit:
//
// done
//
ACPIDevPrint( (
ACPI_PRINT_IRP,
deviceExtension,
"(%#08lx): %s = %#08lx\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, minorFunction),
status
) );
return status;
}
NTSTATUS
ACPIRootIrpUnhandled(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine is the dispatch point for the unhandled requests sent to a filter
Arguments:
DeviceObject - Pointer to the device object we received the request for
Irp - Pointer to the request
Return Value:
NTSTATUS
--*/
{
NTSTATUS status;
PDEVICE_EXTENSION deviceExtension = ACPIInternalGetDeviceExtension(DeviceObject);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation( Irp );
//
// Let the debugger know
//
ACPIDevPrint( (
ACPI_PRINT_WARNING,
deviceExtension,
"(%#08lx): %s - Unhandled\n",
Irp,
ACPIDebugGetIrpText(IRP_MJ_PNP, irpStack->MinorFunction)
) );
//
// Skip current stack location
//
IoSkipCurrentIrpStackLocation( Irp );
//
// Call the driver below us
//
status = IoCallDriver( deviceExtension->TargetDeviceObject, Irp );
//
// Done
//
return status;
}
//
// Some data structures used by the AML interpreter. We need to be able
// to read/write these globals to keep track of the number of contexts
// allocated by the interpreter...
//
extern ULONG gdwcCTObjsMax;
extern ULONG AMLIMaxCTObjs;
extern KSPIN_LOCK gdwGContextSpinLock;
VOID
ACPIRootPowerCallBack(
IN PVOID CallBackContext,
IN PVOID Argument1,
IN PVOID Argument2
)
/*++
Routine Description:
This routine is called when the system changes power states
Arguments:
CallBackContext - The device extension for the root device
Argument1
--*/
{
HANDLE pKey;
HANDLE wKey;
KIRQL oldIrql;
NTSTATUS status;
ULONG action = PtrToUlong( Argument1 );
ULONG value = PtrToUlong( Argument2 );
ULONG num;
//
// We are looking for a PO_CB_SYSTEM_STATE_LOCK
//
if (action != PO_CB_SYSTEM_STATE_LOCK) {
return;
}
//
// We need to remember if we are going to S0 or we are leaving S0
//
KeAcquireSpinLock( &GpeTableLock, &oldIrql );
AcpiPowerLeavingS0 = (value != 1);
KeReleaseSpinLock( &GpeTableLock, oldIrql );
//
// We have to update the GPE masks now. Before we can do that, we need
// to hold the cancel spinlock and the power lock to make sure that
// everything is synchronized okay
//
IoAcquireCancelSpinLock( &oldIrql );
KeAcquireSpinLockAtDpcLevel( &AcpiPowerLock );
//
// Update the GPE masks
//
ACPIWakeRemoveDevicesAndUpdate( NULL, NULL );
//
// Done with the locks
//
KeReleaseSpinLockFromDpcLevel( &AcpiPowerLock );
IoReleaseCancelSpinLock( oldIrql );
if (value == 0) {
//
// We need to reset the max number of context objects allocated
//
KeAcquireSpinLock( &gdwGContextSpinLock, &oldIrql );
gdwcCTObjsMax = 0;
KeReleaseSpinLock( &gdwGContextSpinLock, oldIrql );
//
// Return now otherwise we will execute that we normally
// would execute on wake-up
//
return;
}
//
// Open the correct handle to the registry
//
status = OSCreateHandle(ACPI_PARAMETERS_REGISTRY_KEY, NULL, &pKey);
if (!NT_SUCCESS(status)) {
return;
}
//
// Grab the max number of contexts allocated and write it to
// the registry, but only if it exceeds the last value store
// in the registry
//
KeAcquireSpinLock( &gdwGContextSpinLock, &oldIrql );
if (gdwcCTObjsMax > AMLIMaxCTObjs) {
AMLIMaxCTObjs = gdwcCTObjsMax;
}
num = AMLIMaxCTObjs;
KeReleaseSpinLock( &gdwGContextSpinLock, oldIrql );
OSWriteRegValue(
"AMLIMaxCTObjs",
pKey,
&num,
sizeof(num)
);
//
// If we are leaving the sleep state, and re-entering the running
// state, then we had better write to the registery that we think
// woke up the computer
//
status = OSCreateHandle("WakeUp",pKey,&wKey);
OSCloseHandle(pKey);
if (!NT_SUCCESS(status)) {
OSCloseHandle(pKey);
return;
}
//
// Store the PM1 Fixed Register Mask
//
OSWriteRegValue(
"FixedEventMask",
wKey,
&(AcpiInformation->pm1_wake_mask),
sizeof(AcpiInformation->pm1_wake_mask)
);
//
// Store the PM1 Fixed Register Status
//
OSWriteRegValue(
"FixedEventStatus",
wKey,
&(AcpiInformation->pm1_wake_status),
sizeof(AcpiInformation->pm1_wake_status)
);
//
// Store the GPE Mask
//
OSWriteRegValue(
"GenericEventMask",
wKey,
GpeSavedWakeMask,
AcpiInformation->GpeSize
);
//
// Store the GPE Status
//
OSWriteRegValue(
"GenericEventStatus",
wKey,
GpeSavedWakeStatus,
AcpiInformation->GpeSize
);
//
// Done with the key
//
OSCloseHandle( wKey );
}
NTSTATUS
ACPIRootUpdateRootResourcesWithBusResources(
VOID
)
/*++
Routine Description:
This routine is called when ACPI is started. Its purpose is to change
the resources reported to ACPI for its own use to include those resources
used by direct childs which are not buses. In other words, it updates
its resource list so that buses do not prevent direct children from
starting.
This is black magic
Arguments:
None
Return Value:
NTSTATUS
--*/
{
KIRQL oldIrql;
LONG oldReferenceCount;
NTSTATUS status;
PCM_RESOURCE_LIST cmList;
PDEVICE_EXTENSION deviceExtension;
PDEVICE_EXTENSION oldExtension;
PIO_RESOURCE_REQUIREMENTS_LIST currentList = NULL;
PIO_RESOURCE_REQUIREMENTS_LIST globalList = NULL;
PUCHAR crsBuf;
//
// First take the ACPI CM Res List and turn *that* into an Io ResList. This
// is the list that we will add things to
//
status = PnpCmResourceListToIoResourceList(
RootDeviceExtension->ResourceList,
&globalList
);
if (!NT_SUCCESS(status)) {
//
// Oops
//
return status;
}
//
// We must walk the tree at Dispatch level <sigh>
//
KeAcquireSpinLock( &AcpiDeviceTreeLock, &oldIrql );
//
// Is the list empty?
//
if (IsListEmpty( &(RootDeviceExtension->ChildDeviceList) ) ) {
//
// We have nothing to do here
//
KeReleaseSpinLock( &AcpiDeviceTreeLock, oldIrql );
ExFreePool( globalList );
return STATUS_SUCCESS;
}
//
// Get the first child
//
deviceExtension = CONTAINING_RECORD(
RootDeviceExtension->ChildDeviceList.Flink,
DEVICE_EXTENSION,
SiblingDeviceList
);
//
// Always update the reference count to make sure that one will ever
// delete the node without our knowing about it
//
InterlockedIncrement( &(deviceExtension->ReferenceCount) );
//
// Release the lock
//
KeReleaseSpinLock( &AcpiDeviceTreeLock, oldIrql );
//
// loop until we get to the parent
//
while (deviceExtension != NULL ) {
//
// Check to see if we are a bus, and if we are, we will skip this
// node
//
if (!(deviceExtension->Flags & DEV_MASK_BUS) &&
!(deviceExtension->Flags & DEV_PROP_NO_OBJECT) ) {
//
// At this point, see if there is a _CRS
//
ACPIGetBufferSync(
deviceExtension,
PACKED_CRS,
&crsBuf,
NULL
);
if (crsBuf != NULL) {
//
// Try to turn the crs into an IO_RESOURCE_REQUIREMENTS_LIST
//
status = PnpBiosResourcesToNtResources(
crsBuf,
0,
&currentList
);
//
// If we didn't succeed, then we skip the list
//
if (NT_SUCCESS(status)) {
//
// Add this list to the global list
//
status = ACPIRangeAdd(
&globalList,
currentList
);
//
// We are done with the local IO res list
//
ExFreePool( currentList );
}
ACPIDevPrint( (
ACPI_PRINT_RESOURCES_1,
deviceExtension,
"ACPIRootUpdateResources = %08lx\n",
status
) );
//
// Done with local crs
//
ExFreePool( crsBuf );
}
}
//
// We need the lock to walk the next resource in the tree
//
KeAcquireSpinLock( &AcpiDeviceTreeLock, &oldIrql );
//
// Remember the old extension
//
oldExtension = deviceExtension;
//
// Get the next device extension
//
if (deviceExtension->SiblingDeviceList.Flink !=
&(RootDeviceExtension->ChildDeviceList) ) {
//
// Next Element
//
deviceExtension = CONTAINING_RECORD(
deviceExtension->SiblingDeviceList.Flink,
DEVICE_EXTENSION,
SiblingDeviceList
);
//
// Reference count the device
//
InterlockedIncrement( &(deviceExtension->ReferenceCount) );
} else {
deviceExtension = NULL;
}
//
// Decrement the reference count on this node
//
oldReferenceCount = InterlockedDecrement(
&(oldExtension->ReferenceCount)
);
//
// Is this the last reference?
//
if (oldReferenceCount == 0) {
//
// Free the memory allocated by the extension
//
ACPIInitDeleteDeviceExtension( oldExtension );
}
//
// Done with the lock
//
KeReleaseSpinLock( &AcpiDeviceTreeLock, oldIrql );
}
//
// Do we have any resources that we care to update?
//
if (globalList == NULL) {
//
// No, then we are done
//
return STATUS_SUCCESS;
}
//
// Turn the global list into a CM_RES_LIST
//
status = PnpIoResourceListToCmResourceList( globalList, &cmList );
//
// No matter what, we are done with the global list
//
ExFreePool( globalList );
//
// Check to see if we succeeded
//
if (!NT_SUCCESS(status)) {
//
// Oops
//
return status;
}
//
// Now, set this as the resources consumed by ACPI. The previous list
// was created by the system manager, so freeing it is bad.
//
RootDeviceExtension->ResourceList = cmList;
//
// Done
//
return STATUS_SUCCESS;
}
NTSTATUS
ACPIRootUpdateRootResourcesWithHalResources(
VOID
)
/*++
Routine Description:
This routine will read from the registry the resources that cannot
be allocated by ACPI and store them in the resourceList for PnP0C08
This is black magic
Arguments:
None
Return Value:
NTSTATUS
--*/
{
HANDLE classKeyHandle;
HANDLE driverKeyHandle;
HANDLE resourceMap;
NTSTATUS status;
OBJECT_ATTRIBUTES resourceObject;
PCM_FULL_RESOURCE_DESCRIPTOR cmFullResList;
PCM_RESOURCE_LIST globalResList;
PCM_RESOURCE_LIST cmResList;
PUCHAR lastAddr;
ULONG bufferSize;
ULONG busTranslatedLength;
ULONG classKeyIndex;
ULONG driverKeyIndex;
ULONG driverValueIndex;
ULONG i;
ULONG j;
ULONG length;
ULONG temp;
ULONG translatedLength;
union {
PVOID buffer;
PKEY_BASIC_INFORMATION keyBasicInf;
PKEY_FULL_INFORMATION keyFullInf;
PKEY_VALUE_FULL_INFORMATION valueKeyFullInf;
} u;
UNICODE_STRING keyName;
WCHAR rgzTranslated[] = L".Translated";
WCHAR rgzBusTranslated[] = L".Bus.Translated";
WCHAR rgzResourceMap[] =
L"\\REGISTRY\\MACHINE\\HARDWARE\\RESOURCEMAP";
#define INVALID_HANDLE (HANDLE) -1
//
// Start out with one page of buffer
//
bufferSize = PAGE_SIZE;
//
// Allocate this buffer
//
u.buffer = ExAllocatePoolWithTag(
PagedPool,
bufferSize,
ACPI_MISC_POOLTAG
);
if (u.buffer == NULL) {
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// Add the current global res list to the working list
//
globalResList = NULL;
status = ACPIRangeAddCmList(
&globalResList,
RootDeviceExtension->ResourceList
);
if (!NT_SUCCESS(status)) {
ExFreePool( u.buffer );
return status;
}
ExFreePool( RootDeviceExtension->ResourceList );
RootDeviceExtension->ResourceList = NULL;
//
// count the constant string lengths
//
for (translatedLength = 0;
rgzTranslated[translatedLength];
translatedLength++);
for (busTranslatedLength = 0;
rgzBusTranslated[busTranslatedLength];
busTranslatedLength++);
translatedLength *= sizeof(WCHAR);
busTranslatedLength *= sizeof(WCHAR);
//
// Initialize the registry path information
//
RtlInitUnicodeString( &keyName, rgzResourceMap );
//
// Open the registry key for this information
//
InitializeObjectAttributes(
&resourceObject,
&keyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
status = ZwOpenKey(
&resourceMap,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
&resourceObject
);
if (!NT_SUCCESS(status)) {
//
// Failed:
//
ACPIPrint( (
ACPI_PRINT_CRITICAL,
"ACPIRootUpdateRootResourcesWithHalResources: ZwOpenKey = 0x%08lx\n",
status
) );
ExFreePool( u.buffer );
return status;
}
//
// Walk resource map and collect any in-use resources
//
classKeyIndex = 0;
classKeyHandle = INVALID_HANDLE;
driverKeyHandle = INVALID_HANDLE;
status = STATUS_SUCCESS;
//
// loop until failure
//
while (NT_SUCCESS(status)) {
//
// Get the class information
//
status = ZwEnumerateKey(
resourceMap,
classKeyIndex++,
KeyBasicInformation,
u.keyBasicInf,
bufferSize,
&temp
);
if (!NT_SUCCESS(status)) {
break;
}
//
// Create a unicode string using the counted string passed back to
// us in the information structure, and open the class key
//
keyName.Buffer = (PWSTR) u.keyBasicInf->Name;
keyName.Length = (USHORT) u.keyBasicInf->NameLength;
keyName.MaximumLength = (USHORT) u.keyBasicInf->NameLength;
InitializeObjectAttributes(
&resourceObject,
&keyName,
OBJ_CASE_INSENSITIVE,
resourceMap,
NULL
);
status = ZwOpenKey(
&classKeyHandle,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
&resourceObject
);
if (!NT_SUCCESS(status)) {
break;
}
//
// Loop until failure
//
driverKeyIndex = 0;
while (NT_SUCCESS(status)) {
//
// Get the class information
//
status = ZwEnumerateKey(
classKeyHandle,
driverKeyIndex++,
KeyBasicInformation,
u.keyBasicInf,
bufferSize,
&temp
);
if (!NT_SUCCESS(status)) {
break;
}
//
// Create a unicode string using the counted string passed back
// to us in the information structure, and open the class key
//
keyName.Buffer = (PWSTR) u.keyBasicInf->Name;
keyName.Length = (USHORT) u.keyBasicInf->NameLength;
keyName.MaximumLength = (USHORT) u.keyBasicInf->NameLength;
InitializeObjectAttributes(
&resourceObject,
&keyName,
OBJ_CASE_INSENSITIVE,
classKeyHandle,
NULL
);
status = ZwOpenKey(
&driverKeyHandle,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
&resourceObject
);
if (!NT_SUCCESS(status)) {
break;
}
//
// Get full information for that key so we can get the information
// about the data stored in the key
//
status = ZwQueryKey(
driverKeyHandle,
KeyFullInformation,
u.keyFullInf,
bufferSize,
&temp
);
if (!NT_SUCCESS(status)) {
break;
}
//
// How long is the key?
//
length = sizeof( KEY_VALUE_FULL_INFORMATION) +
u.keyFullInf->MaxValueNameLen +
u.keyFullInf->MaxValueDataLen +
sizeof(UNICODE_NULL);
if (length > bufferSize) {
PVOID tempBuffer;
//
// Grow the buffer
//
tempBuffer = ExAllocatePoolWithTag(
PagedPool,
length,
ACPI_MISC_POOLTAG
);
if (tempBuffer == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
ExFreePool( u.buffer );
u.buffer = tempBuffer;
bufferSize = length;
}
//
// Look at all the values
//
driverValueIndex = 0;
for(;;) {
PCM_RESOURCE_LIST tempCmList;
status = ZwEnumerateValueKey(
driverKeyHandle,
driverValueIndex++,
KeyValueFullInformation,
u.valueKeyFullInf,
bufferSize,
&temp
);
if (!NT_SUCCESS(status)) {
break;
}
//
// If this is not a translated resource list, skip it
//
i = u.valueKeyFullInf->NameLength;
if (i < translatedLength ||
RtlCompareMemory(
((PUCHAR) u.valueKeyFullInf->Name) + i - translatedLength,
rgzTranslated,
translatedLength) != translatedLength
) {
//
// Does not end in rgzTranslated
//
continue;
}
//
// Is this a bus translated resource list???
//
if (i >= busTranslatedLength &&
RtlCompareMemory(
((PUCHAR) u.valueKeyFullInf->Name) + i - busTranslatedLength,
rgzBusTranslated,
busTranslatedLength) != busTranslatedLength
) {
//
// Ends in rgzBusTranslated
//
continue;
}
//
// we now have a pointer to the cm resource list
//
cmResList = (PCM_RESOURCE_LIST) ( (PUCHAR) u.valueKeyFullInf +
u.valueKeyFullInf->DataOffset);
lastAddr = (PUCHAR) cmResList + u.valueKeyFullInf->DataLength;
//
// We must flatten this list down to one level, so lets
// figure out how many descriptors we need
//
cmFullResList = cmResList->List;
for (temp = i = 0; i < cmResList->Count; i++) {
if ( (PUCHAR) cmFullResList > lastAddr) {
break;
}
temp += cmFullResList->PartialResourceList.Count;
//
// next CM_FULL_RESOURCE_DESCRIPTOR
//
cmFullResList =
(PCM_FULL_RESOURCE_DESCRIPTOR) ( (PUCHAR) cmFullResList
+ sizeof(CM_FULL_RESOURCE_DESCRIPTOR) +
(cmFullResList->PartialResourceList.Count - 1) *
sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR) );
}
//
// Now that we have the number of descriptors, allocate this
// much space
//
tempCmList = ExAllocatePool(
PagedPool,
sizeof(CM_RESOURCE_LIST) + (temp - 1) *
sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR)
);
if (tempCmList == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
//
// Now, fill up the flatened list
//
RtlCopyMemory(
tempCmList,
cmResList,
sizeof(CM_RESOURCE_LIST) -
sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR)
);
tempCmList->Count = 1;
tempCmList->List->PartialResourceList.Count = temp;
//
// This is a brute force approach
//
cmFullResList = cmResList->List;
for (temp = i = 0; i < cmResList->Count; i++) {
if ( (PUCHAR) cmFullResList > lastAddr) {
break;
}
//
// Copy the current descriptors over
//
RtlCopyMemory(
&(tempCmList->List->PartialResourceList.PartialDescriptors[temp]),
cmFullResList->PartialResourceList.PartialDescriptors,
cmFullResList->PartialResourceList.Count *
sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR)
);
temp += cmFullResList->PartialResourceList.Count;
//
// next CM_FULL_RESOURCE_DESCRIPTOR
//
cmFullResList =
(PCM_FULL_RESOURCE_DESCRIPTOR) ( (PUCHAR) cmFullResList
+ sizeof(CM_FULL_RESOURCE_DESCRIPTOR) +
(cmFullResList->PartialResourceList.Count - 1) *
sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR) );
}
//
// Add it to the global list
//
status = ACPIRangeAddCmList(
&globalResList,
tempCmList
);
if (!NT_SUCCESS(status)) {
ACPIPrint( (
ACPI_PRINT_CRITICAL,
"ACPIRootUpdateRootResourcesWithHalResources: "
"ACPIRangeAddCmList = 0x%08lx\n",
status
) );
ExFreePool( tempCmList );
break;
}
ExFreePool( tempCmList );
} // for -- Next driverValueIndex
if (driverKeyHandle != INVALID_HANDLE) {
ZwClose( driverKeyHandle);
driverKeyHandle = INVALID_HANDLE;
}
if (status == STATUS_NO_MORE_ENTRIES) {
status = STATUS_SUCCESS;
}
} // while -- Next driverKeyIndex
if (classKeyHandle != INVALID_HANDLE) {
ZwClose( classKeyHandle );
classKeyHandle = INVALID_HANDLE;
}
if (status == STATUS_NO_MORE_ENTRIES) {
status = STATUS_SUCCESS;
}
} // while -- next classKeyIndex
if (status == STATUS_NO_MORE_ENTRIES) {
status = STATUS_SUCCESS;
}
ZwClose( resourceMap );
ExFreePool( u.buffer );
//
// Remember the new global list
//
RootDeviceExtension->ResourceList = globalResList;
return status;
}
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