mirror of
https://github.com/reactos/reactos.git
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1062 lines
31 KiB
C
Executable file
1062 lines
31 KiB
C
Executable file
// Copyright (c) 2004, Antony C. Roberts
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// Use of this file is subject to the terms
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// described in the LICENSE.TXT file that
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// accompanies this file.
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//
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// Your use of this file indicates your
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// acceptance of the terms described in
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// LICENSE.TXT.
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//
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// http://www.freebt.net
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#include "fbtusb.h"
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#include "fbtpwr.h"
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#include "fbtpnp.h"
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#include "fbtdev.h"
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#include "fbtrwr.h"
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#include "fbtwmi.h"
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#include "fbtusr.h"
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// Handle power events
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NTSTATUS FreeBT_DispatchPower(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
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{
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NTSTATUS ntStatus;
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PIO_STACK_LOCATION irpStack;
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PUNICODE_STRING tagString;
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PDEVICE_EXTENSION deviceExtension;
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irpStack = IoGetCurrentIrpStackLocation(Irp);
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deviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
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// We don't queue power Irps, we'll only check if the
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// device was removed, otherwise we'll take appropriate
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// action and send it to the next lower driver. In general
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// drivers should not cause long delays while handling power
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// IRPs. If a driver cannot handle a power IRP in a brief time,
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// it should return STATUS_PENDING and queue all incoming
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// IRPs until the IRP completes.
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if (Removed == deviceExtension->DeviceState)
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{
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// Even if a driver fails the IRP, it must nevertheless call
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// PoStartNextPowerIrp to inform the Power Manager that it
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// is ready to handle another power IRP.
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PoStartNextPowerIrp(Irp);
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Irp->IoStatus.Status = ntStatus = STATUS_DELETE_PENDING;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return ntStatus;
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}
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if (NotStarted == deviceExtension->DeviceState)
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{
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// if the device is not started yet, pass it down
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PoStartNextPowerIrp(Irp);
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IoSkipCurrentIrpStackLocation(Irp);
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return PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
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}
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower::"));
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FreeBT_IoIncrement(deviceExtension);
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switch(irpStack->MinorFunction)
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{
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case IRP_MN_SET_POWER:
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// The Power Manager sends this IRP for one of the
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// following reasons:
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// 1) To notify drivers of a change to the system power state.
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// 2) To change the power state of a device for which
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// the Power Manager is performing idle detection.
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// A driver sends IRP_MN_SET_POWER to change the power
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// state of its device if it's a power policy owner for the
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// device.
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower: IRP_MN_SET_POWER\n"));
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IoMarkIrpPending(Irp);
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switch(irpStack->Parameters.Power.Type)
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{
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case SystemPowerState:
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HandleSystemSetPower(DeviceObject, Irp);
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ntStatus = STATUS_PENDING;
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break;
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case DevicePowerState:
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HandleDeviceSetPower(DeviceObject, Irp);
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ntStatus = STATUS_PENDING;
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break;
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}
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break;
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case IRP_MN_QUERY_POWER:
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// The Power Manager sends a power IRP with the minor
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// IRP code IRP_MN_QUERY_POWER to determine whether it
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// can safely change to the specified system power state
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// (S1-S5) and to allow drivers to prepare for such a change.
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// If a driver can put its device in the requested state,
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// it sets status to STATUS_SUCCESS and passes the IRP down.
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower: IRP_MN_QUERY_POWER\n"));
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IoMarkIrpPending(Irp);
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switch(irpStack->Parameters.Power.Type)
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{
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case SystemPowerState:
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HandleSystemQueryPower(DeviceObject, Irp);
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ntStatus = STATUS_PENDING;
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break;
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case DevicePowerState:
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HandleDeviceQueryPower(DeviceObject, Irp);
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ntStatus = STATUS_PENDING;
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break;
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}
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break;
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case IRP_MN_WAIT_WAKE:
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// The minor power IRP code IRP_MN_WAIT_WAKE provides
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// for waking a device or waking the system. Drivers
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// of devices that can wake themselves or the system
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// send IRP_MN_WAIT_WAKE. The system sends IRP_MN_WAIT_WAKE
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// only to devices that always wake the system, such as
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// the power-on switch.
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower: IRP_MN_WAIT_WAKE\n"));
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IoMarkIrpPending(Irp);
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IoCopyCurrentIrpStackLocationToNext(Irp);
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IoSetCompletionRoutine(
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Irp,
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(PIO_COMPLETION_ROUTINE)WaitWakeCompletionRoutine,
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deviceExtension,
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TRUE,
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TRUE,
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TRUE);
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PoStartNextPowerIrp(Irp);
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ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
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if(!NT_SUCCESS(ntStatus))
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{
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FreeBT_DbgPrint(1, ("FBTUSB: Lower drivers failed the wait-wake Irp\n"));
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}
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ntStatus = STATUS_PENDING;
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// push back the count HERE and NOT in completion routine
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// a pending Wait Wake Irp should not impede stopping the device
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower: IRP_MN_WAIT_WAKE::"));
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FreeBT_IoDecrement(deviceExtension);
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break;
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case IRP_MN_POWER_SEQUENCE:
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// A driver sends this IRP as an optimization to determine
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// whether its device actually entered a specific power state.
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// This IRP is optional. Power Manager cannot send this IRP.
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower: IRP_MN_POWER_SEQUENCE\n"));
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default:
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PoStartNextPowerIrp(Irp);
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IoSkipCurrentIrpStackLocation(Irp);
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ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
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if(!NT_SUCCESS(ntStatus))
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{
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FreeBT_DbgPrint(1, ("FBTUSB: FreeBT_DispatchPower: Lower drivers failed this Irp\n"));
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}
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FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchPower::"));
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FreeBT_IoDecrement(deviceExtension);
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break;
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}
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return ntStatus;
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}
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NTSTATUS HandleSystemQueryPower(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
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{
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NTSTATUS ntStatus;
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PDEVICE_EXTENSION deviceExtension;
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SYSTEM_POWER_STATE systemState;
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PIO_STACK_LOCATION irpStack;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemQueryPower: Entered\n"));
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// initialize variables
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deviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
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irpStack = IoGetCurrentIrpStackLocation(Irp);
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systemState = irpStack->Parameters.Power.State.SystemState;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemQueryPower: Query for system power state S%X\n"
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"FBTUSB: HandleSystemQueryPower: Current system power state S%X\n",
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systemState - 1,
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deviceExtension->SysPower - 1));
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// Fail a query for a power state incompatible with waking up the system
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if ((deviceExtension->WaitWakeEnable) && (systemState > deviceExtension->DeviceCapabilities.SystemWake))
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{
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FreeBT_DbgPrint(1, ("FBTUSB: HandleSystemQueryPower: Query for an incompatible system power state\n"));
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PoStartNextPowerIrp(Irp);
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Irp->IoStatus.Status = ntStatus = STATUS_INVALID_DEVICE_STATE;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemQueryPower::"));
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FreeBT_IoDecrement(deviceExtension);
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return ntStatus;
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}
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// if querying for a lower S-state, issue a wait-wake
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if((systemState > deviceExtension->SysPower) && (deviceExtension->WaitWakeEnable))
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{
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IssueWaitWake(deviceExtension);
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}
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IoCopyCurrentIrpStackLocationToNext(Irp);
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IoSetCompletionRoutine(
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Irp,
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(PIO_COMPLETION_ROUTINE)SysPoCompletionRoutine,
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deviceExtension,
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TRUE,
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TRUE,
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TRUE);
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ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemQueryPower: Leaving\n"));
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return STATUS_PENDING;
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}
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NTSTATUS HandleSystemSetPower(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )
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{
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NTSTATUS ntStatus;
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PDEVICE_EXTENSION deviceExtension;
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SYSTEM_POWER_STATE systemState;
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PIO_STACK_LOCATION irpStack;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemSetPower: Entered\n"));
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deviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
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irpStack = IoGetCurrentIrpStackLocation(Irp);
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systemState = irpStack->Parameters.Power.State.SystemState;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemSetPower: Set request for system power state S%X\n"
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"FBTUSB: HandleSystemSetPower: Current system power state S%X\n",
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systemState - 1,
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deviceExtension->SysPower - 1));
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IoCopyCurrentIrpStackLocationToNext(Irp);
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IoSetCompletionRoutine(
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Irp,
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(PIO_COMPLETION_ROUTINE)SysPoCompletionRoutine,
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deviceExtension,
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TRUE,
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TRUE,
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TRUE);
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ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
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FreeBT_DbgPrint(3, ("FBTUSB: HandleSystemSetPower: Leaving\n"));
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return STATUS_PENDING;
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}
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NTSTATUS HandleDeviceQueryPower(PDEVICE_OBJECT DeviceObject, PIRP Irp)
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{
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NTSTATUS ntStatus;
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PDEVICE_EXTENSION deviceExtension;
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PIO_STACK_LOCATION irpStack;
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DEVICE_POWER_STATE deviceState;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceQueryPower: Entered\n"));
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deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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irpStack = IoGetCurrentIrpStackLocation(Irp);
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deviceState = irpStack->Parameters.Power.State.DeviceState;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceQueryPower: Query for device power state D%X\n"
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"FBTUSB: HandleDeviceQueryPower: Current device power state D%X\n",
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deviceState - 1,
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deviceExtension->DevPower - 1));
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if (deviceExtension->WaitWakeEnable && deviceState > deviceExtension->DeviceCapabilities.DeviceWake)
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{
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PoStartNextPowerIrp(Irp);
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Irp->IoStatus.Status = ntStatus = STATUS_INVALID_DEVICE_STATE;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceQueryPower::"));
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FreeBT_IoDecrement(deviceExtension);
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return ntStatus;
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}
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if (deviceState < deviceExtension->DevPower)
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{
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ntStatus = STATUS_SUCCESS;
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}
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else
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{
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ntStatus = HoldIoRequests(DeviceObject, Irp);
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if(STATUS_PENDING == ntStatus)
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{
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return ntStatus;
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}
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}
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// on error complete the Irp.
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// on success pass it to the lower layers
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PoStartNextPowerIrp(Irp);
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Irp->IoStatus.Status = ntStatus;
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Irp->IoStatus.Information = 0;
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if(!NT_SUCCESS(ntStatus))
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{
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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}
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else
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{
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IoSkipCurrentIrpStackLocation(Irp);
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ntStatus=PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
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}
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceQueryPower::"));
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FreeBT_IoDecrement(deviceExtension);
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceQueryPower: Leaving\n"));
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return ntStatus;
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}
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NTSTATUS SysPoCompletionRoutine(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PDEVICE_EXTENSION DeviceExtension)
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{
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NTSTATUS ntStatus;
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PIO_STACK_LOCATION irpStack;
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ntStatus = Irp->IoStatus.Status;
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irpStack = IoGetCurrentIrpStackLocation(Irp);
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FreeBT_DbgPrint(3, ("FBTUSB: SysPoCompletionRoutine: Entered\n"));
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// lower drivers failed this Irp
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if(!NT_SUCCESS(ntStatus))
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{
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PoStartNextPowerIrp(Irp);
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FreeBT_DbgPrint(3, ("FBTUSB: SysPoCompletionRoutine::"));
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FreeBT_IoDecrement(DeviceExtension);
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return STATUS_SUCCESS;
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}
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// ..otherwise update the cached system power state (IRP_MN_SET_POWER)
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if(irpStack->MinorFunction == IRP_MN_SET_POWER)
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{
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DeviceExtension->SysPower = irpStack->Parameters.Power.State.SystemState;
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}
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// queue device irp and return STATUS_MORE_PROCESSING_REQUIRED
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SendDeviceIrp(DeviceObject, Irp);
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FreeBT_DbgPrint(3, ("FBTUSB: SysPoCompletionRoutine: Leaving\n"));
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return STATUS_MORE_PROCESSING_REQUIRED;
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}
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VOID SendDeviceIrp(IN PDEVICE_OBJECT DeviceObject, IN PIRP SIrp )
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{
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NTSTATUS ntStatus;
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POWER_STATE powState;
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PDEVICE_EXTENSION deviceExtension;
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PIO_STACK_LOCATION irpStack;
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SYSTEM_POWER_STATE systemState;
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DEVICE_POWER_STATE devState;
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PPOWER_COMPLETION_CONTEXT powerContext;
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irpStack = IoGetCurrentIrpStackLocation(SIrp);
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systemState = irpStack->Parameters.Power.State.SystemState;
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deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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FreeBT_DbgPrint(3, ("FBTUSB: SendDeviceIrp: Entered\n"));
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// Read out the D-IRP out of the S->D mapping array captured in QueryCap's.
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// we can choose deeper sleep states than our mapping but never choose
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// lighter ones.
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devState = deviceExtension->DeviceCapabilities.DeviceState[systemState];
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powState.DeviceState = devState;
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powerContext = (PPOWER_COMPLETION_CONTEXT) ExAllocatePool(NonPagedPool, sizeof(POWER_COMPLETION_CONTEXT));
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if (!powerContext)
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{
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FreeBT_DbgPrint(1, ("FBTUSB: SendDeviceIrp: Failed to alloc memory for powerContext\n"));
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ntStatus = STATUS_INSUFFICIENT_RESOURCES;
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}
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else
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{
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powerContext->DeviceObject = DeviceObject;
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powerContext->SIrp = SIrp;
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// in win2k PoRequestPowerIrp can take fdo or pdo.
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ntStatus = PoRequestPowerIrp(
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deviceExtension->PhysicalDeviceObject,
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irpStack->MinorFunction,
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powState,
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(PREQUEST_POWER_COMPLETE)DevPoCompletionRoutine,
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powerContext,
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NULL);
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}
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if (!NT_SUCCESS(ntStatus))
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{
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if (powerContext)
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{
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ExFreePool(powerContext);
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}
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PoStartNextPowerIrp(SIrp);
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SIrp->IoStatus.Status = ntStatus;
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SIrp->IoStatus.Information = 0;
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IoCompleteRequest(SIrp, IO_NO_INCREMENT);
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FreeBT_DbgPrint(3, ("FBTUSB: SendDeviceIrp::"));
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FreeBT_IoDecrement(deviceExtension);
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}
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FreeBT_DbgPrint(3, ("FBTUSB: SendDeviceIrp: Leaving\n"));
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}
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VOID DevPoCompletionRoutine(
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IN PDEVICE_OBJECT DeviceObject,
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IN UCHAR MinorFunction,
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IN POWER_STATE PowerState,
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IN PVOID Context,
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IN PIO_STATUS_BLOCK IoStatus
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)
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{
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PIRP sIrp;
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PDEVICE_EXTENSION deviceExtension;
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PPOWER_COMPLETION_CONTEXT powerContext;
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powerContext = (PPOWER_COMPLETION_CONTEXT) Context;
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sIrp = powerContext->SIrp;
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deviceExtension = (PDEVICE_EXTENSION) powerContext->DeviceObject->DeviceExtension;
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FreeBT_DbgPrint(3, ("FBTUSB: DevPoCompletionRoutine: Entered\n"));
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sIrp->IoStatus.Status = IoStatus->Status;
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PoStartNextPowerIrp(sIrp);
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sIrp->IoStatus.Information = 0;
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IoCompleteRequest(sIrp, IO_NO_INCREMENT);
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FreeBT_DbgPrint(3, ("FBTUSB: DevPoCompletionRoutine::"));
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FreeBT_IoDecrement(deviceExtension);
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ExFreePool(powerContext);
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FreeBT_DbgPrint(3, ("FBTUSB: DevPoCompletionRoutine: Leaving\n"));
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}
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NTSTATUS HandleDeviceSetPower(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
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{
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KIRQL oldIrql;
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NTSTATUS ntStatus;
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POWER_STATE newState;
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PIO_STACK_LOCATION irpStack;
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PDEVICE_EXTENSION deviceExtension;
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DEVICE_POWER_STATE newDevState,
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oldDevState;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower: Entered\n"));
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deviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
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irpStack = IoGetCurrentIrpStackLocation(Irp);
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oldDevState = deviceExtension->DevPower;
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newState = irpStack->Parameters.Power.State;
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newDevState = newState.DeviceState;
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower: Set request for device power state D%X\n"
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"FBTUSB: HandleDeviceSetPower: Current device power state D%X\n",
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newDevState - 1,
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deviceExtension->DevPower - 1));
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if (newDevState < oldDevState)
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{
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FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower: Adding power to the device\n"));
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|
|
IoCopyCurrentIrpStackLocationToNext(Irp);
|
|
IoSetCompletionRoutine(
|
|
Irp,
|
|
(PIO_COMPLETION_ROUTINE)FinishDevPoUpIrp,
|
|
deviceExtension,
|
|
TRUE,
|
|
TRUE,
|
|
TRUE);
|
|
|
|
ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
|
|
|
|
}
|
|
|
|
else
|
|
{
|
|
// newDevState >= oldDevState
|
|
|
|
// hold I/O if transition from D0 -> DX (X = 1, 2, 3)
|
|
// if transition from D1 or D2 to deeper sleep states,
|
|
// I/O queue is already on hold.
|
|
if(PowerDeviceD0 == oldDevState && newDevState > oldDevState)
|
|
{
|
|
// D0 -> DX transition
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower: Removing power from the device\n"));
|
|
|
|
ntStatus = HoldIoRequests(DeviceObject, Irp);
|
|
if (!NT_SUCCESS(ntStatus))
|
|
{
|
|
PoStartNextPowerIrp(Irp);
|
|
Irp->IoStatus.Status = ntStatus;
|
|
Irp->IoStatus.Information = 0;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower::"));
|
|
FreeBT_IoDecrement(deviceExtension);
|
|
|
|
return ntStatus;
|
|
|
|
}
|
|
|
|
else
|
|
{
|
|
goto HandleDeviceSetPower_Exit;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (PowerDeviceD0 == oldDevState && PowerDeviceD0 == newDevState)
|
|
{
|
|
// D0 -> D0
|
|
// unblock the queue which may have been blocked processing
|
|
// query irp
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower: A SetD0 request\n"));
|
|
|
|
KeAcquireSpinLock(&deviceExtension->DevStateLock, &oldIrql);
|
|
deviceExtension->QueueState = AllowRequests;
|
|
KeReleaseSpinLock(&deviceExtension->DevStateLock, oldIrql);
|
|
|
|
ProcessQueuedRequests(deviceExtension);
|
|
|
|
}
|
|
|
|
IoCopyCurrentIrpStackLocationToNext(Irp);
|
|
IoSetCompletionRoutine(
|
|
Irp,
|
|
(PIO_COMPLETION_ROUTINE) FinishDevPoDnIrp,
|
|
deviceExtension,
|
|
TRUE,
|
|
TRUE,
|
|
TRUE);
|
|
|
|
ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
|
|
if(!NT_SUCCESS(ntStatus))
|
|
{
|
|
FreeBT_DbgPrint(1, ("FBTUSB: HandleDeviceSetPower: Lower drivers failed a power Irp\n"));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
HandleDeviceSetPower_Exit:
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HandleDeviceSetPower: Leaving\n"));
|
|
|
|
return STATUS_PENDING;
|
|
|
|
}
|
|
|
|
NTSTATUS FinishDevPoUpIrp(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PDEVICE_EXTENSION DeviceExtension)
|
|
{
|
|
NTSTATUS ntStatus;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: FinishDevPoUpIrp: Entered\n"));
|
|
|
|
ntStatus = Irp->IoStatus.Status;
|
|
if(Irp->PendingReturned)
|
|
{
|
|
IoMarkIrpPending(Irp);
|
|
|
|
}
|
|
|
|
if(!NT_SUCCESS(ntStatus))
|
|
{
|
|
PoStartNextPowerIrp(Irp);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: FinishDevPoUpIrp::"));
|
|
FreeBT_IoDecrement(DeviceExtension);
|
|
|
|
return STATUS_SUCCESS;
|
|
|
|
}
|
|
|
|
SetDeviceFunctional(DeviceObject, Irp, DeviceExtension);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: FinishDevPoUpIrp: Leaving\n"));
|
|
|
|
return STATUS_MORE_PROCESSING_REQUIRED;
|
|
|
|
}
|
|
|
|
NTSTATUS SetDeviceFunctional(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PDEVICE_EXTENSION DeviceExtension)
|
|
{
|
|
KIRQL oldIrql;
|
|
NTSTATUS ntStatus;
|
|
POWER_STATE newState;
|
|
PIO_STACK_LOCATION irpStack;
|
|
DEVICE_POWER_STATE newDevState, oldDevState;
|
|
|
|
ntStatus = Irp->IoStatus.Status;
|
|
irpStack = IoGetCurrentIrpStackLocation(Irp);
|
|
newState = irpStack->Parameters.Power.State;
|
|
newDevState = newState.DeviceState;
|
|
oldDevState = DeviceExtension->DevPower;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: SetDeviceFunctional: Entered\n"));
|
|
|
|
// update the cached state
|
|
DeviceExtension->DevPower = newDevState;
|
|
|
|
// restore appropriate amount of state to our h/w
|
|
// this driver does not implement partial context
|
|
// save/restore.
|
|
PoSetPowerState(DeviceObject, DevicePowerState, newState);
|
|
if(PowerDeviceD0 == newDevState)
|
|
{
|
|
KeAcquireSpinLock(&DeviceExtension->DevStateLock, &oldIrql);
|
|
DeviceExtension->QueueState = AllowRequests;
|
|
KeReleaseSpinLock(&DeviceExtension->DevStateLock, oldIrql);
|
|
|
|
ProcessQueuedRequests(DeviceExtension);
|
|
|
|
}
|
|
|
|
PoStartNextPowerIrp(Irp);
|
|
Irp->IoStatus.Status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = 0;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: SetDeviceFunctional::"));
|
|
FreeBT_IoDecrement(DeviceExtension);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: SetDeviceFunctional: Leaving\n"));
|
|
|
|
return STATUS_SUCCESS;
|
|
|
|
}
|
|
|
|
NTSTATUS FinishDevPoDnIrp(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PDEVICE_EXTENSION DeviceExtension)
|
|
{
|
|
NTSTATUS ntStatus;
|
|
POWER_STATE newState;
|
|
PIO_STACK_LOCATION irpStack;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: FinishDevPoDnIrp: Entered\n"));
|
|
|
|
ntStatus = Irp->IoStatus.Status;
|
|
irpStack = IoGetCurrentIrpStackLocation(Irp);
|
|
newState = irpStack->Parameters.Power.State;
|
|
|
|
if (NT_SUCCESS(ntStatus) && irpStack->MinorFunction == IRP_MN_SET_POWER)
|
|
{
|
|
FreeBT_DbgPrint(3, ("FBTUSB: updating cache..\n"));
|
|
DeviceExtension->DevPower = newState.DeviceState;
|
|
PoSetPowerState(DeviceObject, DevicePowerState, newState);
|
|
|
|
}
|
|
|
|
PoStartNextPowerIrp(Irp);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: FinishDevPoDnIrp::"));
|
|
FreeBT_IoDecrement(DeviceExtension);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: FinishDevPoDnIrp: Leaving\n"));
|
|
|
|
return STATUS_SUCCESS;
|
|
|
|
}
|
|
|
|
NTSTATUS HoldIoRequests(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
|
|
|
|
{
|
|
NTSTATUS ntStatus;
|
|
PIO_WORKITEM item;
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
PWORKER_THREAD_CONTEXT context;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequests: Entered\n"));
|
|
|
|
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
|
|
deviceExtension->QueueState = HoldRequests;
|
|
|
|
context = (PWORKER_THREAD_CONTEXT) ExAllocatePool(NonPagedPool, sizeof(WORKER_THREAD_CONTEXT));
|
|
if(context)
|
|
{
|
|
item = IoAllocateWorkItem(DeviceObject);
|
|
|
|
context->Irp = Irp;
|
|
context->DeviceObject = DeviceObject;
|
|
context->WorkItem = item;
|
|
|
|
if (item)
|
|
{
|
|
IoMarkIrpPending(Irp);
|
|
IoQueueWorkItem(item, HoldIoRequestsWorkerRoutine, DelayedWorkQueue, context);
|
|
ntStatus = STATUS_PENDING;
|
|
|
|
}
|
|
|
|
else
|
|
{
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequests: Failed to allocate memory for workitem\n"));
|
|
ExFreePool(context);
|
|
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
{
|
|
FreeBT_DbgPrint(1, ("FBTUSB: HoldIoRequests: Failed to alloc memory for worker thread context\n"));
|
|
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
}
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequests: Leaving\n"));
|
|
|
|
return ntStatus;
|
|
|
|
}
|
|
|
|
VOID HoldIoRequestsWorkerRoutine(IN PDEVICE_OBJECT DeviceObject, IN PVOID Context)
|
|
{
|
|
PIRP irp;
|
|
NTSTATUS ntStatus;
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
PWORKER_THREAD_CONTEXT context;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequestsWorkerRoutine: Entered\n"));
|
|
|
|
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
|
|
context = (PWORKER_THREAD_CONTEXT) Context;
|
|
irp = (PIRP) context->Irp;
|
|
|
|
// wait for I/O in progress to finish.
|
|
// the stop event is signalled when the counter drops to 1.
|
|
// invoke FreeBT_IoDecrement twice: once each for the S-Irp and D-Irp.
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequestsWorkerRoutine::"));
|
|
FreeBT_IoDecrement(deviceExtension);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequestsWorkerRoutine::"));
|
|
FreeBT_IoDecrement(deviceExtension);
|
|
|
|
KeWaitForSingleObject(&deviceExtension->StopEvent, Executive, KernelMode, FALSE, NULL);
|
|
|
|
// Increment twice to restore the count
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequestsWorkerRoutine::"));
|
|
FreeBT_IoIncrement(deviceExtension);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequestsWorkerRoutine::"));
|
|
FreeBT_IoIncrement(deviceExtension);
|
|
|
|
// now send the Irp down
|
|
IoCopyCurrentIrpStackLocationToNext(irp);
|
|
IoSetCompletionRoutine(
|
|
irp,
|
|
(PIO_COMPLETION_ROUTINE) FinishDevPoDnIrp,
|
|
deviceExtension,
|
|
TRUE,
|
|
TRUE,
|
|
TRUE);
|
|
|
|
ntStatus = PoCallDriver(deviceExtension->TopOfStackDeviceObject, irp);
|
|
if(!NT_SUCCESS(ntStatus))
|
|
{
|
|
FreeBT_DbgPrint(1, ("FBTUSB: HoldIoRequestsWorkerRoutine: Lower driver fail a power Irp\n"));
|
|
|
|
}
|
|
|
|
IoFreeWorkItem(context->WorkItem);
|
|
ExFreePool((PVOID)context);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequestsWorkerRoutine: Leaving\n"));
|
|
|
|
}
|
|
|
|
NTSTATUS QueueRequest(IN OUT PDEVICE_EXTENSION DeviceExtension, IN PIRP Irp)
|
|
{
|
|
KIRQL oldIrql;
|
|
NTSTATUS ntStatus;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: QueueRequests: Entered\n"));
|
|
|
|
ntStatus = STATUS_PENDING;
|
|
|
|
ASSERT(HoldRequests == DeviceExtension->QueueState);
|
|
|
|
KeAcquireSpinLock(&DeviceExtension->QueueLock, &oldIrql);
|
|
|
|
InsertTailList(&DeviceExtension->NewRequestsQueue, &Irp->Tail.Overlay.ListEntry);
|
|
IoMarkIrpPending(Irp);
|
|
IoSetCancelRoutine(Irp, CancelQueued);
|
|
|
|
KeReleaseSpinLock(&DeviceExtension->QueueLock, oldIrql);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: QueueRequests: Leaving\n"));
|
|
|
|
return ntStatus;
|
|
|
|
}
|
|
|
|
VOID CancelQueued(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
|
|
{
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
KIRQL oldIrql;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: CancelQueued: Entered\n"));
|
|
|
|
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
|
|
oldIrql = Irp->CancelIrql;
|
|
|
|
// Release the cancel spin lock
|
|
IoReleaseCancelSpinLock(Irp->CancelIrql);
|
|
|
|
// Acquire the queue lock
|
|
KeAcquireSpinLockAtDpcLevel(&deviceExtension->QueueLock);
|
|
|
|
// Remove the cancelled Irp from queue and release the lock
|
|
RemoveEntryList(&Irp->Tail.Overlay.ListEntry);
|
|
|
|
KeReleaseSpinLock(&deviceExtension->QueueLock, oldIrql);
|
|
|
|
// complete with STATUS_CANCELLED
|
|
Irp->IoStatus.Status = STATUS_CANCELLED;
|
|
Irp->IoStatus.Information = 0;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: CancelQueued: Leaving\n"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
NTSTATUS IssueWaitWake(IN PDEVICE_EXTENSION DeviceExtension)
|
|
{
|
|
POWER_STATE poState;
|
|
NTSTATUS ntStatus;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: IssueWaitWake: Entered\n"));
|
|
|
|
if(InterlockedExchange(&DeviceExtension->FlagWWOutstanding, 1))
|
|
{
|
|
return STATUS_DEVICE_BUSY;
|
|
|
|
}
|
|
|
|
InterlockedExchange(&DeviceExtension->FlagWWCancel, 0);
|
|
|
|
// lowest state from which this Irp will wake the system
|
|
poState.SystemState = DeviceExtension->DeviceCapabilities.SystemWake;
|
|
ntStatus = PoRequestPowerIrp(DeviceExtension->PhysicalDeviceObject,
|
|
IRP_MN_WAIT_WAKE,
|
|
poState,
|
|
(PREQUEST_POWER_COMPLETE) WaitWakeCallback,
|
|
DeviceExtension,
|
|
&DeviceExtension->WaitWakeIrp);
|
|
|
|
if(!NT_SUCCESS(ntStatus))
|
|
{
|
|
InterlockedExchange(&DeviceExtension->FlagWWOutstanding, 0);
|
|
|
|
}
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: IssueWaitWake: Leaving\n"));
|
|
|
|
return ntStatus;
|
|
|
|
}
|
|
|
|
VOID CancelWaitWake(IN PDEVICE_EXTENSION DeviceExtension)
|
|
{
|
|
PIRP Irp;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: CancelWaitWake: Entered\n"));
|
|
|
|
Irp = (PIRP) InterlockedExchangePointer(&DeviceExtension->WaitWakeIrp, NULL);
|
|
if(Irp)
|
|
{
|
|
IoCancelIrp(Irp);
|
|
if(InterlockedExchange(&DeviceExtension->FlagWWCancel, 1))
|
|
{
|
|
PoStartNextPowerIrp(Irp);
|
|
Irp->IoStatus.Status = STATUS_CANCELLED;
|
|
Irp->IoStatus.Information = 0;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: CancelWaitWake: Leaving\n"));
|
|
|
|
}
|
|
|
|
NTSTATUS WaitWakeCompletionRoutine(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PDEVICE_EXTENSION DeviceExtension)
|
|
{
|
|
FreeBT_DbgPrint(3, ("FBTUSB: WaitWakeCompletionRoutine: Entered\n"));
|
|
if(Irp->PendingReturned)
|
|
{
|
|
IoMarkIrpPending(Irp);
|
|
|
|
}
|
|
|
|
// Nullify the WaitWakeIrp pointer-the Irp is released
|
|
// as part of the completion process. If it's already NULL,
|
|
// avoid race with the CancelWaitWake routine.
|
|
if(InterlockedExchangePointer(&DeviceExtension->WaitWakeIrp, NULL))
|
|
{
|
|
PoStartNextPowerIrp(Irp);
|
|
|
|
return STATUS_SUCCESS;
|
|
|
|
}
|
|
|
|
// CancelWaitWake has run.
|
|
// If FlagWWCancel != 0, complete the Irp.
|
|
// If FlagWWCancel == 0, CancelWaitWake completes it.
|
|
if(InterlockedExchange(&DeviceExtension->FlagWWCancel, 1))
|
|
{
|
|
PoStartNextPowerIrp(Irp);
|
|
|
|
return STATUS_CANCELLED;
|
|
|
|
}
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: WaitWakeCompletionRoutine: Leaving\n"));
|
|
|
|
return STATUS_MORE_PROCESSING_REQUIRED;
|
|
|
|
}
|
|
|
|
VOID WaitWakeCallback(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN UCHAR MinorFunction,
|
|
IN POWER_STATE PowerState,
|
|
IN PVOID Context,
|
|
IN PIO_STATUS_BLOCK IoStatus)
|
|
{
|
|
NTSTATUS ntStatus;
|
|
POWER_STATE powerState;
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: WaitWakeCallback: Entered\n"));
|
|
|
|
deviceExtension = (PDEVICE_EXTENSION) Context;
|
|
|
|
InterlockedExchange(&deviceExtension->FlagWWOutstanding, 0);
|
|
|
|
if(!NT_SUCCESS(IoStatus->Status))
|
|
{
|
|
return;
|
|
|
|
}
|
|
|
|
// wake up the device
|
|
if(deviceExtension->DevPower == PowerDeviceD0)
|
|
{
|
|
FreeBT_DbgPrint(3, ("FBTUSB: WaitWakeCallback: Device already powered up...\n"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: WaitWakeCallback::"));
|
|
FreeBT_IoIncrement(deviceExtension);
|
|
|
|
powerState.DeviceState = PowerDeviceD0;
|
|
ntStatus = PoRequestPowerIrp(deviceExtension->PhysicalDeviceObject,
|
|
IRP_MN_SET_POWER,
|
|
powerState,
|
|
(PREQUEST_POWER_COMPLETE) WWIrpCompletionFunc,
|
|
deviceExtension,
|
|
NULL);
|
|
|
|
if(deviceExtension->WaitWakeEnable)
|
|
{
|
|
IssueWaitWake(deviceExtension);
|
|
|
|
}
|
|
|
|
FreeBT_DbgPrint(3, ("FBTUSB: WaitWakeCallback: Leaving\n"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
PCHAR PowerMinorFunctionString (IN UCHAR MinorFunction)
|
|
{
|
|
switch (MinorFunction)
|
|
{
|
|
case IRP_MN_SET_POWER:
|
|
return "IRP_MN_SET_POWER\n";
|
|
|
|
case IRP_MN_QUERY_POWER:
|
|
return "IRP_MN_QUERY_POWER\n";
|
|
|
|
case IRP_MN_POWER_SEQUENCE:
|
|
return "IRP_MN_POWER_SEQUENCE\n";
|
|
|
|
case IRP_MN_WAIT_WAKE:
|
|
return "IRP_MN_WAIT_WAKE\n";
|
|
|
|
default:
|
|
return "IRP_MN_?????\n";
|
|
|
|
}
|
|
|
|
}
|