131 lines
3.6 KiB
C++
131 lines
3.6 KiB
C++
/*++
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Copyright (c) 1991 - 2001 Microsoft Corporation
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Module Name:
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##### ##### ## # ## ##### ##### #### ##### #####
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## ## ## ## ## ### ## ## ## ## ## # ## ## ## ##
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## ## ## ## ## ### ## ## ## ## ## ## ## ## ##
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## ## ## ## ## # # ## ##### ##### ## ## ## ## ##
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##### ## ## ### ### ## #### ## ##### #####
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## ## ## ### ### ## ## ## ## ## # ## ##
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## ##### ## ## ##### ## ## ## #### ## ##
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Abstract:
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This module process all power management IRPs.
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Author:
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Wesley Witt (wesw) 1-Oct-2001
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Environment:
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Kernel mode only.
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Notes:
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--*/
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#include "internal.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE,WdPower)
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#endif
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NTSTATUS
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WdPower(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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Arguments:
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DeviceObject - a pointer to the object that represents the device
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that I/O is to be done on.
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Irp - a pointer to the I/O Request Packet for this request.
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Return Value:
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--*/
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PDEVICE_EXTENSION DeviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
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ULONG TimeoutValue;
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switch (IrpSp->MinorFunction) {
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case IRP_MN_WAIT_WAKE:
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case IRP_MN_POWER_SEQUENCE:
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case IRP_MN_QUERY_POWER:
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Status = STATUS_SUCCESS;
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break;
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case IRP_MN_SET_POWER:
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switch (IrpSp->Parameters.Power.State.SystemState) {
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case PowerSystemSleeping1:
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//
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// The system is being suspended
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//
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WdHandlerStopTimer( DeviceExtension );
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break;
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case PowerSystemHibernate:
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//
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// The system is hibernating
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//
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WdHandlerStopTimer( DeviceExtension );
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break;
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case PowerSystemWorking:
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//
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// The system is waking up from suspend/hibernate
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//
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WdHandlerStartTimer( DeviceExtension );
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break;
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case PowerSystemShutdown:
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//
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// The system is shutting down normally
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//
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if (ShutdownCountTime > MIN_TIMEOUT_VALUE) {
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TimeoutValue = ShutdownCountTime;
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} else {
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TimeoutValue = (ULONG)DeviceExtension->MaxCount;
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}
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WdHandlerSetTimeoutValue( DeviceExtension, TimeoutValue, TRUE );
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switch (IrpSp->Parameters.Power.ShutdownType) {
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case PowerActionShutdownOff:
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TimeoutValue = 1;
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break;
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case PowerActionShutdownReset:
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TimeoutValue = 0;
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break;
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}
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WdHandlerSetTriggerAction( DeviceExtension, TimeoutValue );
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break;
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}
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Status = STATUS_SUCCESS;
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break;
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default:
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Status = Irp->IoStatus.Status;
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break;
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}
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Irp->IoStatus.Status = Status;
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PoStartNextPowerIrp(Irp);
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IoSkipCurrentIrpStackLocation( Irp );
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return PoCallDriver( DeviceExtension->TargetObject, Irp );
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}
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