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reactos/drivers/bus/acpi/cmbatt/cmbpnp.c

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/*
* PROJECT: ReactOS ACPI-Compliant Control Method Battery
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: boot/drivers/bus/acpi/cmbatt/cmbpnp.c
* PURPOSE: Plug-and-Play IOCTL/IRP Handling
* PROGRAMMERS: ReactOS Portable Systems Group
*/
/* INCLUDES *******************************************************************/
#include "cmbatt.h"
/* FUNCTIONS ******************************************************************/
VOID
NTAPI
CmBattWaitWakeLoop(IN PDEVICE_OBJECT DeviceObject,
IN UCHAR MinorFunction,
IN POWER_STATE PowerState,
IN PVOID Context,
IN PIO_STATUS_BLOCK IoStatusBlock)
{
NTSTATUS Status;
PCMBATT_DEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
if (CmBattDebug & 0x20) DbgPrint("CmBattWaitWakeLoop: Entered.\n");
/* Check for success */
if ((NT_SUCCESS(IoStatusBlock->Status)) && (DeviceExtension->WaitWakeEnable))
{
/* Request a new power IRP */
if (CmBattDebug & 2) DbgPrint("CmBattWaitWakeLoop: completed successfully\n");
Status = PoRequestPowerIrp(DeviceObject,
MinorFunction,
PowerState,
CmBattWaitWakeLoop,
Context,
&DeviceExtension->PowerIrp);
if (CmBattDebug & 2)
DbgPrint("CmBattWaitWakeLoop: PoRequestPowerIrp: status = 0x%08x.\n",
Status);
}
else
{
/* Clear the power IRP, we failed */
if (CmBattDebug & 0xC)
DbgPrint("CmBattWaitWakeLoop: failed: status = 0x%08x.\n",
IoStatusBlock->Status);
DeviceExtension->PowerIrp = NULL;
}
}
NTSTATUS
NTAPI
CmBattIoCompletion(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PKEVENT Event)
{
if (CmBattDebug & 2) DbgPrint("CmBattIoCompletion: Event (%x)\n", Event);
/* Set the completion event */
KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
return STATUS_MORE_PROCESSING_REQUIRED;
}
NTSTATUS
NTAPI
CmBattGetAcpiInterfaces(IN PDEVICE_OBJECT DeviceObject,
IN OUT PACPI_INTERFACE_STANDARD AcpiInterface)
{
PIRP Irp;
NTSTATUS Status;
PIO_STACK_LOCATION IoStackLocation;
KEVENT Event;
/* Allocate the IRP */
Irp = IoAllocateIrp(DeviceObject->StackSize, 0);
if (!Irp)
{
/* Fail */
if (CmBattDebug & 0xC)
DbgPrint("CmBattGetAcpiInterfaces: Failed to allocate Irp\n");
return STATUS_INSUFFICIENT_RESOURCES;
}
/* Set default error code */
Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
/* Build the query */
IoStackLocation = IoGetNextIrpStackLocation(Irp);
IoStackLocation->MajorFunction = IRP_MJ_PNP;
IoStackLocation->MinorFunction = IRP_MN_QUERY_INTERFACE;
IoStackLocation->Parameters.QueryInterface.InterfaceType = &GUID_ACPI_INTERFACE_STANDARD;
IoStackLocation->Parameters.QueryInterface.Size = sizeof(ACPI_INTERFACE_STANDARD);
IoStackLocation->Parameters.QueryInterface.Version = 1;
IoStackLocation->Parameters.QueryInterface.Interface = (PINTERFACE)AcpiInterface;
IoStackLocation->Parameters.QueryInterface.InterfaceSpecificData = NULL;
/* Set default ACPI interface data */
AcpiInterface->Size = sizeof(ACPI_INTERFACE_STANDARD);
AcpiInterface->Version = 1;
/* Initialize our wait event */
KeInitializeEvent(&Event, SynchronizationEvent, 0);
/* Set the completion routine */
IoSetCompletionRoutine(Irp,
(PVOID)CmBattIoCompletion,
&Event,
TRUE,
TRUE,
TRUE);
/* Now call ACPI */
Status = IoCallDriver(DeviceObject, Irp);
if (Status == STATUS_PENDING)
{
/* Wait for completion */
KeWaitForSingleObject(&Event,
Executive,
KernelMode,
FALSE,
NULL);
Status = Irp->IoStatus.Status;
}
/* Free the IRP */
IoFreeIrp(Irp);
/* Return status */
if (!(NT_SUCCESS(Status)) && (CmBattDebug & 0xC))
DbgPrint("CmBattGetAcpiInterfaces: Could not get ACPI driver interfaces, status = %x\n", Status);
return Status;
}
VOID
NTAPI
CmBattDestroyFdo(IN PDEVICE_OBJECT DeviceObject)
{
PAGED_CODE();
if (CmBattDebug & 0x220) DbgPrint("CmBattDestroyFdo, Battery.\n");
/* Delete the device */
IoDeleteDevice(DeviceObject);
if (CmBattDebug & 0x220) DbgPrint("CmBattDestroyFdo: done.\n");
}
NTSTATUS
NTAPI
CmBattRemoveDevice(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PCMBATT_DEVICE_EXTENSION DeviceExtension;
PVOID Context;
DeviceExtension = DeviceObject->DeviceExtension;
if (CmBattDebug & 2)
DbgPrint("CmBattRemoveDevice: CmBatt (%x), Type %d, _UID %d\n",
DeviceExtension,
DeviceExtension->FdoType,
DeviceExtension->DeviceId);
/* Make sure it's safe to go ahead */
IoReleaseRemoveLockAndWait(&DeviceExtension->RemoveLock, 0);
/* Check for pending power IRP */
if (DeviceExtension->PowerIrp)
{
/* Cancel and clear */
IoCancelIrp(DeviceExtension->PowerIrp);
DeviceExtension->PowerIrp = NULL;
}
/* Check what type of FDO is being removed */
Context = DeviceExtension->AcpiInterface.Context;
if (DeviceExtension->FdoType == CmBattBattery)
{
/* Unregister battery FDO */
DeviceExtension->AcpiInterface.UnregisterForDeviceNotifications(Context,
(PVOID)CmBattNotifyHandler);
CmBattWmiDeRegistration(DeviceExtension);
if (!NT_SUCCESS(BatteryClassUnload(DeviceExtension->ClassData))) ASSERT(FALSE);
}
else
{
/* Unregister AC adapter FDO */
DeviceExtension->AcpiInterface.UnregisterForDeviceNotifications(Context,
(PVOID)CmBattNotifyHandler);
CmBattWmiDeRegistration(DeviceExtension);
AcAdapterPdo = NULL;
}
/* Detach and delete */
IoDetachDevice(DeviceExtension->AttachedDevice);
IoDeleteDevice(DeviceExtension->DeviceObject);
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
CmBattPowerDispatch(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION IoStackLocation;
PCMBATT_DEVICE_EXTENSION DeviceExtension;
NTSTATUS Status;
if (CmBattDebug & 0x210) DbgPrint("CmBattPowerDispatch\n");
/* Get stack location and device extension */
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
DeviceExtension = DeviceObject->DeviceExtension;
switch (IoStackLocation->MinorFunction)
{
case IRP_MN_WAIT_WAKE:
if (CmBattDebug & 0x10)
DbgPrint("CmBattPowerDispatch: IRP_MN_WAIT_WAKE\n");
break;
case IRP_MN_POWER_SEQUENCE:
if (CmBattDebug & 0x10)
DbgPrint("CmBattPowerDispatch: IRP_MN_POWER_SEQUENCE\n");
break;
case IRP_MN_QUERY_POWER:
if (CmBattDebug & 0x10)
DbgPrint("CmBattPowerDispatch: IRP_MN_WAIT_WAKE\n");
break;
case IRP_MN_SET_POWER:
if (CmBattDebug & 0x10)
DbgPrint("CmBattPowerDispatch: IRP_MN_SET_POWER type: %d, State: %d \n",
IoStackLocation->Parameters.Power.Type,
IoStackLocation->Parameters.Power.State);
break;
default:
if (CmBattDebug & 1)
DbgPrint("CmBattPowerDispatch: minor %d\n", IoStackLocation->MinorFunction);
break;
}
/* Start the next IRP and see if we're attached */
PoStartNextPowerIrp(Irp);
if (DeviceExtension->AttachedDevice)
{
/* Call ACPI */
IoSkipCurrentIrpStackLocation(Irp);
Status = PoCallDriver(DeviceExtension->AttachedDevice, Irp);
}
else
{
/* Complete the request here */
Status = Irp->IoStatus.Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
/* Return status */
return Status;
}
NTSTATUS
NTAPI
CmBattPnpDispatch(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION IoStackLocation;
PCMBATT_DEVICE_EXTENSION DeviceExtension;
NTSTATUS Status;
KEVENT Event;
PAGED_CODE();
/* Get stack location and device extension */
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
DeviceExtension = DeviceObject->DeviceExtension;
/* Set default error */
Status = STATUS_NOT_SUPPORTED;
/* Try to acquire the lock before doing anything */
Status = IoAcquireRemoveLock(&DeviceExtension->RemoveLock, Irp);
if (!NT_SUCCESS(Status))
{
/* Complete the request */
Irp->IoStatus.Status = STATUS_DEVICE_REMOVED;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_DEVICE_REMOVED;
}
/* What's the operation? */
switch (IoStackLocation->MinorFunction)
{
case IRP_MN_QUERY_PNP_DEVICE_STATE:
/* Initialize our wait event */
KeInitializeEvent(&Event, SynchronizationEvent, 0);
/* Set the completion routine */
IoCopyCurrentIrpStackLocationToNext(Irp);
IoSetCompletionRoutine(Irp,
(PVOID)CmBattIoCompletion,
&Event,
TRUE,
TRUE,
TRUE);
/* Now call ACPI to inherit its PnP Device State */
Status = IoCallDriver(DeviceExtension->AttachedDevice, Irp);
if (Status == STATUS_PENDING)
{
/* Wait for completion */
KeWaitForSingleObject(&Event,
Executive,
KernelMode,
FALSE,
NULL);
Status = Irp->IoStatus.Status;
}
/* However, a battery CAN be disabled */
Irp->IoStatus.Information &= ~PNP_DEVICE_NOT_DISABLEABLE;
/* Release the remove lock and complete the request */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
IoReleaseRemoveLock(&DeviceExtension->RemoveLock, Irp);
return Status;
case IRP_MN_SURPRISE_REMOVAL:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_SURPRISE_REMOVAL\n");
/* Lock the device extension and set the handle count to invalid */
ExAcquireFastMutex(&DeviceExtension->FastMutex);
DeviceExtension->HandleCount = -1;
ExReleaseFastMutex(&DeviceExtension->FastMutex);
Status = STATUS_SUCCESS;
break;
case IRP_MN_START_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_START_DEVICE\n");
/* Mark the extension as started */
if (DeviceExtension->FdoType == CmBattBattery) DeviceExtension->Started = TRUE;
Status = STATUS_SUCCESS;
break;
case IRP_MN_STOP_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_STOP_DEVICE\n");
/* Mark the extension as stopped */
if (DeviceExtension->FdoType == CmBattBattery) DeviceExtension->Started = FALSE;
Status = STATUS_SUCCESS;
break;
case IRP_MN_QUERY_REMOVE_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_QUERY_REMOVE_DEVICE\n");
/* Lock the extension and get the current handle count */
ExAcquireFastMutex(&DeviceExtension->FastMutex);
if (DeviceExtension->HandleCount == 0)
{
/* No handles. Mark it as invalid since it'll be removed */
DeviceExtension->HandleCount = -1;
Status = STATUS_SUCCESS;
}
else if (DeviceExtension->HandleCount == -1)
{
/* Don't do anything, but this is strange since it's already removed */
Status = STATUS_SUCCESS;
if (CmBattDebug & 4)
DbgPrint("CmBattPnpDispatch: Received two consecutive QUERY_REMOVE requests.\n");
}
else
{
/* Fail because there's still open handles */
Status = STATUS_UNSUCCESSFUL;
}
/* Release the lock and return */
ExReleaseFastMutex(&DeviceExtension->FastMutex);
break;
case IRP_MN_REMOVE_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_REMOVE_DEVICE\n");
/* Call the remove code */
Status = CmBattRemoveDevice(DeviceObject, Irp);
break;
case IRP_MN_CANCEL_REMOVE_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_CANCEL_REMOVE_DEVICE\n");
/* Lock the extension and get the handle count */
ExAcquireFastMutex(&DeviceExtension->FastMutex);
if (DeviceExtension->HandleCount == -1)
{
/* A remove was in progress, set the handle count back to 0 */
DeviceExtension->HandleCount = 0;
}
else if (CmBattDebug & 2)
{
/* Nop, but warn about it */
DbgPrint("CmBattPnpDispatch: Received CANCEL_REMOVE when OpenCount == %x\n",
DeviceExtension->HandleCount);
}
/* Return success in all cases, and release the lock */
Status = STATUS_SUCCESS;
ExReleaseFastMutex(&DeviceExtension->FastMutex);
break;
case IRP_MN_QUERY_STOP_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_QUERY_STOP_DEVICE\n");
/* There's no real support for this */
Status = STATUS_NOT_IMPLEMENTED;
break;
case IRP_MN_CANCEL_STOP_DEVICE:
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_CANCEL_STOP_DEVICE\n");
/* There's no real support for this */
Status = STATUS_NOT_IMPLEMENTED;
break;
case IRP_MN_QUERY_CAPABILITIES:
/* Initialize our wait event */
KeInitializeEvent(&Event, SynchronizationEvent, 0);
/* Set the completion routine */
IoCopyCurrentIrpStackLocationToNext(Irp);
IoSetCompletionRoutine(Irp,
(PVOID)CmBattIoCompletion,
&Event,
TRUE,
TRUE,
TRUE);
/* Now call ACPI */
Status = IoCallDriver(DeviceExtension->AttachedDevice, Irp);
if (Status == STATUS_PENDING)
{
/* Wait for completion */
KeWaitForSingleObject(&Event,
Executive,
KernelMode,
FALSE,
NULL);
Status = Irp->IoStatus.Status;
}
/* Get the wake power state */
DeviceExtension->PowerState.SystemState = IoStackLocation->Parameters.DeviceCapabilities.Capabilities->SystemWake;
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_QUERY_CAPABILITIES %d Capabilities->SystemWake = %x\n",
DeviceExtension->FdoType,
DeviceExtension->PowerState);
/* Check if it's invalid */
if (DeviceExtension->PowerState.SystemState == PowerSystemUnspecified)
{
/* Wait wake is not supported in this scenario */
DeviceExtension->WaitWakeEnable = FALSE;
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_QUERY_CAPABILITIES Wake not supported.\n");
}
else if (!(DeviceExtension->PowerIrp) &&
(DeviceExtension->WaitWakeEnable))
{
/* If it was requested in the registry, request the power IRP for it */
PoRequestPowerIrp(DeviceExtension->DeviceObject,
0,
DeviceExtension->PowerState,
CmBattWaitWakeLoop,
0,
&DeviceExtension->PowerIrp);
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: IRP_MN_QUERY_CAPABILITIES wait/Wake irp sent.\n");
}
/* Release the remove lock and complete the request */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
IoReleaseRemoveLock(&DeviceExtension->RemoveLock, Irp);
return Status;
default:
/* Unsupported */
if (CmBattDebug & 0x20)
DbgPrint("CmBattPnpDispatch: Unimplemented minor %0x\n",
IoStackLocation->MinorFunction);
break;
}
/* Release the remove lock */
IoReleaseRemoveLock(&DeviceExtension->RemoveLock, Irp);
/* Set IRP status if we have one */
if (Status != STATUS_NOT_SUPPORTED) Irp->IoStatus.Status = Status;
/* Did someone pick it up? */
if ((NT_SUCCESS(Status)) || (Status == STATUS_NOT_SUPPORTED))
{
/* Still unsupported, try ACPI */
IoSkipCurrentIrpStackLocation(Irp);
Status = IoCallDriver(DeviceExtension->AttachedDevice, Irp);
}
else
{
/* Complete the request */
Status = Irp->IoStatus.Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
/* Release the remove lock and return status */
return Status;
}
NTSTATUS
NTAPI
CmBattCreateFdo(IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT DeviceObject,
IN ULONG DeviceExtensionSize,
IN PDEVICE_OBJECT *NewDeviceObject)
{
PDEVICE_OBJECT FdoDeviceObject;
HANDLE KeyHandle;
PCMBATT_DEVICE_EXTENSION FdoExtension;
UCHAR Buffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(ULONG)];
PKEY_VALUE_PARTIAL_INFORMATION PartialInfo = (PVOID)Buffer;
NTSTATUS Status;
UNICODE_STRING KeyString;
ULONG UniqueId;
ULONG ResultLength;
PAGED_CODE();
if (CmBattDebug & 0x220) DbgPrint("CmBattCreateFdo: Entered\n");
/* Get unique ID */
Status = CmBattGetUniqueId(DeviceObject, &UniqueId);
if (!NT_SUCCESS(Status))
{
/* Assume 0 */
UniqueId = 0;
if (CmBattDebug & 2)
DbgPrint("CmBattCreateFdo: Error %x from _UID, assuming unit #0\n", Status);
}
/* Create the FDO */
Status = IoCreateDevice(DriverObject,
DeviceExtensionSize,
0,
FILE_DEVICE_BATTERY,
FILE_DEVICE_SECURE_OPEN,
0,
&FdoDeviceObject);
if (!NT_SUCCESS(Status))
{
/* Fail */
if (CmBattDebug & 0xC)
DbgPrint("CmBattCreateFdo: error (0x%x) creating device object\n", Status);
return Status;
}
/* Set FDO flags */
FdoDeviceObject->Flags |= (DO_POWER_PAGABLE | DO_BUFFERED_IO);
FdoDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
/* Initialize the extension */
FdoExtension = FdoDeviceObject->DeviceExtension;
RtlZeroMemory(FdoExtension, DeviceExtensionSize);
FdoExtension->DeviceObject = FdoDeviceObject;
FdoExtension->FdoDeviceObject = FdoDeviceObject;
FdoExtension->PdoDeviceObject = DeviceObject;
/* Attach to ACPI */
FdoExtension->AttachedDevice = IoAttachDeviceToDeviceStack(FdoDeviceObject,
DeviceObject);
if (!FdoExtension->AttachedDevice)
{
/* Destroy and fail */
CmBattDestroyFdo(FdoExtension->FdoDeviceObject);
if (CmBattDebug & 0xC)
DbgPrint("CmBattCreateFdo: IoAttachDeviceToDeviceStack failed.\n");
return STATUS_UNSUCCESSFUL;
}
/* Get ACPI interface for EVAL */
Status = CmBattGetAcpiInterfaces(FdoExtension->AttachedDevice,
&FdoExtension->AcpiInterface);
if (!FdoExtension->AttachedDevice)
{
/* Detach, destroy, and fail */
IoDetachDevice(FdoExtension->AttachedDevice);
CmBattDestroyFdo(FdoExtension->FdoDeviceObject);
if (CmBattDebug & 0xC)
DbgPrint("CmBattCreateFdo: Could not get ACPI interfaces: %x\n", Status);
return STATUS_UNSUCCESSFUL;
}
/* Setup the rest of the extension */
ExInitializeFastMutex(&FdoExtension->FastMutex);
IoInitializeRemoveLock(&FdoExtension->RemoveLock, 'RbmC', 0, 0);
FdoExtension->HandleCount = 0;
FdoExtension->WaitWakeEnable = FALSE;
FdoExtension->DeviceId = UniqueId;
FdoExtension->DeviceName = NULL;
FdoExtension->DelayNotification = FALSE;
FdoExtension->ArFlag = 0;
/* Open the device key */
Status = IoOpenDeviceRegistryKey(DeviceObject,
PLUGPLAY_REGKEY_DEVICE,
KEY_READ,
&KeyHandle);
if (NT_SUCCESS(Status))
{
/* Read wait wake value */
RtlInitUnicodeString(&KeyString, L"WaitWakeEnabled");
Status = ZwQueryValueKey(KeyHandle,
&KeyString,
KeyValuePartialInformation,
PartialInfo,
sizeof(Buffer),
&ResultLength);
if (NT_SUCCESS(Status))
{
/* Set value */
FdoExtension->WaitWakeEnable = ((*(PULONG)PartialInfo->Data) != 0);
}
/* Close the handle */
ZwClose(KeyHandle);
}
/* Return success and the new FDO */
*NewDeviceObject = FdoDeviceObject;
if (CmBattDebug & 0x220)
DbgPrint("CmBattCreateFdo: Created FDO %x\n", FdoDeviceObject);
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
CmBattAddBattery(IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT DeviceObject)
{
BATTERY_MINIPORT_INFO MiniportInfo;
NTSTATUS Status;
PDEVICE_OBJECT FdoDeviceObject;
PCMBATT_DEVICE_EXTENSION FdoExtension;
PAGED_CODE();
if (CmBattDebug & 0x220)
DbgPrint("CmBattAddBattery: pdo %x\n", DeviceObject);
/* Create the FDO */
Status = CmBattCreateFdo(DriverObject,
DeviceObject,
sizeof(CMBATT_DEVICE_EXTENSION),
&FdoDeviceObject);
if (!NT_SUCCESS(Status))
{
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddBattery: error (0x%x) creating Fdo\n", Status);
return Status;
}
/* Build the FDO extension, check if we support trip points */
FdoExtension = FdoDeviceObject->DeviceExtension;
FdoExtension->FdoType = CmBattBattery;
FdoExtension->Started = 0;
FdoExtension->NotifySent = TRUE;
InterlockedExchange(&FdoExtension->ArLockValue, 0);
FdoExtension->TripPointValue = BATTERY_UNKNOWN_CAPACITY;
FdoExtension->Tag = 0;
FdoExtension->InterruptTime = KeQueryInterruptTime();
FdoExtension->TripPointSet = CmBattSetTripPpoint(FdoExtension, 0) !=
STATUS_OBJECT_NAME_NOT_FOUND;
/* Setup the battery miniport information structure */
RtlZeroMemory(&MiniportInfo, sizeof(MiniportInfo));
MiniportInfo.Pdo = DeviceObject;
MiniportInfo.MajorVersion = BATTERY_CLASS_MAJOR_VERSION;
MiniportInfo.MinorVersion = BATTERY_CLASS_MINOR_VERSION;
MiniportInfo.Context = FdoExtension;
MiniportInfo.QueryTag = (PVOID)CmBattQueryTag;
MiniportInfo.QueryInformation = (PVOID)CmBattQueryInformation;
MiniportInfo.SetInformation = NULL;
MiniportInfo.QueryStatus = (PVOID)CmBattQueryStatus;
MiniportInfo.SetStatusNotify = (PVOID)CmBattSetStatusNotify;
MiniportInfo.DisableStatusNotify = (PVOID)CmBattDisableStatusNotify;
MiniportInfo.DeviceName = FdoExtension->DeviceName;
/* Register with the class driver */
Status = BatteryClassInitializeDevice(&MiniportInfo, &FdoExtension->ClassData);
if (!NT_SUCCESS(Status))
{
IoDetachDevice(FdoExtension->AttachedDevice);
CmBattDestroyFdo(FdoExtension->FdoDeviceObject);
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddBattery: error (0x%x) registering with class\n", Status);
return Status;
}
/* Register WMI */
Status = CmBattWmiRegistration(FdoExtension);
if (!NT_SUCCESS(Status))
{
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddBattery: Could not register as a WMI provider, status = %Lx\n", Status);
return Status;
}
/* Register ACPI */
Status = FdoExtension->AcpiInterface.RegisterForDeviceNotifications(FdoExtension->AcpiInterface.Context,
(PVOID)CmBattNotifyHandler,
FdoExtension);
if (!NT_SUCCESS(Status))
{
CmBattWmiDeRegistration(FdoExtension);
BatteryClassUnload(FdoExtension->ClassData);
IoDetachDevice(FdoExtension->AttachedDevice);
CmBattDestroyFdo(FdoExtension->FdoDeviceObject);
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddBattery: Could not register for battery notify, status = %Lx\n", Status);
}
/* Return status */
return Status;
}
NTSTATUS
NTAPI
CmBattAddAcAdapter(IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT PdoDeviceObject)
{
PDEVICE_OBJECT FdoDeviceObject;
NTSTATUS Status;
PCMBATT_DEVICE_EXTENSION DeviceExtension;
PAGED_CODE();
if (CmBattDebug & 0x220)
DbgPrint("CmBattAddAcAdapter: pdo %x\n", PdoDeviceObject);
/* Check if we already have an AC adapter */
if (AcAdapterPdo)
{
/* Don't do anything */
if (CmBattDebug & 0xC)
DbgPrint("CmBatt: Second AC adapter found. Current version of driver only supports 1 adapter.\n");
}
else
{
/* Set this as the AC adapter's PDO */
AcAdapterPdo = PdoDeviceObject;
}
/* Create the FDO for the adapter */
Status = CmBattCreateFdo(DriverObject,
PdoDeviceObject,
sizeof(CMBATT_DEVICE_EXTENSION),
&FdoDeviceObject);
if (!NT_SUCCESS(Status))
{
/* Fail */
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddAcAdapter: error (0x%x) creating Fdo\n", Status);
return Status;
}
/* Set the type and do WMI registration */
DeviceExtension = FdoDeviceObject->DeviceExtension;
DeviceExtension->FdoType = CmBattAcAdapter;
Status = CmBattWmiRegistration(DeviceExtension);
if (!NT_SUCCESS(Status))
{
/* We can go on without WMI */
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddBattery: Could not register as a WMI provider, status = %Lx\n", Status);
}
/* Register with ACPI */
Status = DeviceExtension->AcpiInterface.RegisterForDeviceNotifications(DeviceExtension->AcpiInterface.Context,
(PVOID)CmBattNotifyHandler,
DeviceExtension);
if (!(NT_SUCCESS(Status)) && (CmBattDebug & 0xC))
DbgPrint("CmBattAddAcAdapter: Could not register for power notify, status = %Lx\n", Status);
/* Send the first manual notification */
CmBattNotifyHandler(DeviceExtension, ACPI_BATT_NOTIFY_STATUS);
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
CmBattAddDevice(IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT PdoDeviceObject)
{
NTSTATUS Status;
HANDLE KeyHandle;
ULONG ResultLength;
UNICODE_STRING KeyString;
UCHAR Buffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(ULONG)];
PKEY_VALUE_PARTIAL_INFORMATION PartialInfo = (PVOID)Buffer;
ULONG PowerSourceType;
PAGED_CODE();
if (CmBattDebug & 0x220)
DbgPrint("CmBattAddDevice: Entered with pdo %x\n", PdoDeviceObject);
/* Make sure we have a PDO */
if (!PdoDeviceObject)
{
/* Should not be having as one */
if (CmBattDebug & 0x24) DbgPrint("CmBattAddDevice: Asked to do detection\n");
return STATUS_NO_MORE_ENTRIES;
}
/* Open the driver key */
Status = IoOpenDeviceRegistryKey(PdoDeviceObject,
PLUGPLAY_REGKEY_DRIVER,
KEY_READ,
&KeyHandle);
if (!NT_SUCCESS(Status))
{
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddDevice: Could not get the software branch: %x\n", Status);
return Status;
}
/* Read the power source type */
RtlInitUnicodeString(&KeyString, L"PowerSourceType");
Status = ZwQueryValueKey(KeyHandle,
&KeyString,
KeyValuePartialInformation,
PartialInfo,
sizeof(Buffer),
&ResultLength);
ZwClose(KeyHandle);
if (!NT_SUCCESS(Status))
{
/* We need the data, fail without it */
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddDevice: Could not read the power type identifier: %x\n", Status);
return Status;
}
/* Check what kind of power source this is */
PowerSourceType = *(PULONG)PartialInfo->Data;
if (PowerSourceType == 1)
{
/* Create an AC adapter */
Status = CmBattAddAcAdapter(DriverObject, PdoDeviceObject);
}
else if (PowerSourceType == 0)
{
/* Create a battery */
Status = CmBattAddBattery(DriverObject, PdoDeviceObject);
}
else
{
/* Unknown type, fail */
if (CmBattDebug & 0xC)
DbgPrint("CmBattAddDevice: Invalid POWER_SOURCE_TYPE == %d \n", PowerSourceType);
return STATUS_UNSUCCESSFUL;
}
/* Return whatever the FDO creation routine did */
return Status;
}
/* EOF */
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