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[CMBATT]: Implement CmBattQueryTag and CmBattNotifyHandler for getting ACPI Battery notifications, as per ACPI Spec and http://www.microsoft.com/whdc/archive/ACPInotify.mspx.
svn path=/trunk/; revision=46309
This commit is contained in:
Sir Richard
parent
c825e8a684
commit
22bb1901b6
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@ -43,10 +43,117 @@ CmBattWakeDpc(PKDPC Dpc,
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VOID
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NTAPI
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CmBattNotifyHandler(PCMBATT_DEVICE_EXTENSION DeviceExtension,
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ULONG NotifyValue)
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CmBattNotifyHandler(IN PCMBATT_DEVICE_EXTENSION DeviceExtension,
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IN ULONG NotifyValue)
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{
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UNIMPLEMENTED;
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ULONG ArFlag;
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PCMBATT_DEVICE_EXTENSION FdoExtension;
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PDEVICE_OBJECT DeviceObject;
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if (CmBattDebug & (CMBATT_ACPI_ASSERT | CMBATT_PNP_INFO))
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DbgPrint("CmBattNotifyHandler: CmBatt 0x%08x Type %d Number %d Notify Value: %x\n",
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DeviceExtension,
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DeviceExtension->FdoType,
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DeviceExtension->DeviceId,
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NotifyValue);
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/* Check what kind of notification was received */
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switch (NotifyValue)
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{
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/* ACPI Specification says is sends a "Bus Check" when power source changes */
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case ACPI_BUS_CHECK:
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/* We treat it as possible physical change */
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DeviceExtension->ArFlag |= (CMBATT_AR_NOTIFY | CMBATT_AR_INSERT);
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if ((DeviceExtension->Tag) &&
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(CmBattDebug & (CMBATT_ACPI_WARNING | CMBATT_GENERIC_WARNING)))
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DbgPrint("CmBattNotifyHandler: Received battery #%x insertion, but tag was not invalid.\n",
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DeviceExtension->DeviceId);
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break;
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/* Status of the battery has changed */
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case ACPI_BATT_NOTIFY_STATUS:
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/* All we'll do is notify the class driver */
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DeviceExtension->ArFlag |= CMBATT_AR_NOTIFY;
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break;
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/* Information on the battery has changed, such as physical presence */
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case ACPI_DEVICE_CHECK:
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case ACPI_BATT_NOTIFY_INFO:
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/* Reset all state and let the class driver re-evaluate it all */
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DeviceExtension->ArFlag |= (CMBATT_AR_NOTIFY |
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CMBATT_AR_INSERT |
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CMBATT_AR_REMOVE);
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break;
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default:
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if (CmBattDebug & CMBATT_PNP_INFO)
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DbgPrint("CmBattNotifyHandler: Unknown Notify Value: %x\n", NotifyValue);
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}
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/* Check if we're supposed to delay the notification till later */
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if (DeviceExtension->DelayNotification)
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{
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/* We'll handle this when we get a status query later on */
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if (CmBattDebug & CMBATT_PNP_INFO)
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DbgPrint("CmBattNotifyHandler: Notification delayed: ARs = %01x\n",
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DeviceExtension->ArFlag);
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return;
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}
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/* We're going to handle this now */
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if (CmBattDebug & CMBATT_PNP_INFO)
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DbgPrint("CmBattNotifyHandler: Performing ARs: %01x\n", DeviceExtension->ArFlag);
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/* Check if this is a battery or AC adapter notification */
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if (DeviceExtension->FdoType == CmBattBattery)
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{
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/* Reset the current trip point */
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DeviceExtension->TripPointValue = 0xFFFFFFFF;
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/* Check what ARs have to be done */
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ArFlag = DeviceExtension->ArFlag;
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/* New battery inserted, reset lock value */
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if (ArFlag & CMBATT_AR_INSERT) InterlockedExchange(&DeviceExtension->ArLockValue, 0);
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/* Check if the battery may have been removed */
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if (ArFlag & CMBATT_AR_REMOVE) DeviceExtension->Tag = 0;
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/* Check if there's been any sort of change to the battery */
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if (ArFlag & CMBATT_AR_NOTIFY)
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{
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/* We'll probably end up re-evaluating _BIF and _BST */
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DeviceExtension->NotifySent = TRUE;
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BatteryClassStatusNotify(DeviceExtension->ClassData);
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}
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}
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else
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{
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/* The only known notification is AC/DC change */
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if (DeviceExtension->ArFlag & CMBATT_AR_NOTIFY)
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{
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for (DeviceObject = DeviceExtension->FdoDeviceObject->DriverObject->DeviceObject;
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DeviceObject;
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DeviceObject = DeviceObject->NextDevice)
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{
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/* Is this a battery? */
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FdoExtension = DeviceObject->DeviceExtension;
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if (FdoExtension->FdoType == CmBattBattery)
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{
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/* Send a notification to the class driver */
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FdoExtension->NotifySent = TRUE;
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BatteryClassStatusNotify(FdoExtension->ClassData);
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}
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}
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}
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}
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/* ARs have been processed */
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DeviceExtension->ArFlag = 0;
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}
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VOID
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@ -156,11 +263,61 @@ CmBattIoctl(PDEVICE_OBJECT DeviceObject,
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NTSTATUS
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NTAPI
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CmBattQueryTag(PCMBATT_DEVICE_EXTENSION DeviceExtension,
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PULONG BatteryTag)
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CmBattQueryTag(IN PCMBATT_DEVICE_EXTENSION DeviceExtension,
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OUT PULONG Tag)
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{
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UNIMPLEMENTED;
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return STATUS_NOT_IMPLEMENTED;
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PDEVICE_OBJECT PdoDevice;
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ULONG StaData;
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ULONG NewTag;
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NTSTATUS Status;
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PAGED_CODE();
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if (CmBattDebug & (CMBATT_ACPI_WARNING | CMBATT_GENERIC_INFO))
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DbgPrint("CmBattQueryTag - Tag (%d), Battery %x, Device %d\n",
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*Tag, DeviceExtension, DeviceExtension->DeviceId);
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/* Get PDO and clear notification flag */
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PdoDevice = DeviceExtension->PdoDeviceObject;
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DeviceExtension->NotifySent = 0;
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/* Get _STA from PDO (we need the machine status, not the battery status) */
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Status = CmBattGetStaData(PdoDevice, &StaData);
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if (NT_SUCCESS(Status))
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{
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/* Is a battery present? */
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if (StaData & ACPI_STA_BATTERY_PRESENT)
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{
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/* Do we not have a tag yet? */
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if (!DeviceExtension->Tag)
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{
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/* Set the new tag value, reset tags if we reached the maximum */
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NewTag = DeviceExtension->TagData;
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if (DeviceExtension->TagData++ == 0xFFFFFFFF) NewTag = 1;
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DeviceExtension->Tag = NewTag;
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if (CmBattDebug & CMBATT_GENERIC_INFO)
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DbgPrint("CmBattQueryTag - New Tag: (%d)\n", DeviceExtension->Tag);
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/* Reset trip point data */
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DeviceExtension->TripPointOld = 0;
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DeviceExtension->TripPointValue = 0xFFFFFFFF;
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/* Clear AR lock and set new interrupt time */
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InterlockedExchange(&DeviceExtension->ArLockValue, 0);
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DeviceExtension->InterruptTime = KeQueryInterruptTime();
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}
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}
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else
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{
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/* No battery, so no tag */
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DeviceExtension->Tag = 0;
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Status = STATUS_NO_SUCH_DEVICE;
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}
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}
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/* Return the tag and status result */
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*Tag = DeviceExtension->Tag;
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if (CmBattDebug & CMBATT_ACPI_WARNING)
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DbgPrint("CmBattQueryTag: Returning Tag: 0x%x, status 0x%x\n", *Tag, Status);
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return Status;
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}
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NTSTATUS
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@ -29,6 +29,15 @@ typedef enum _CMBATT_EXTENSION_TYPE
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CmBattBattery
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} CMBATT_EXTENSION_TYPE;
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#define ACPI_BUS_CHECK 0x00
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#define ACPI_DEVICE_CHECK 0x01
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#define ACPI_STA_PRESENT 0x01
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#define ACPI_STA_ENABLED 0x02
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#define ACPI_STA_SHOW_UI 0x04
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#define ACPI_STA_FUNCTIONAL 0x08
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#define ACPI_STA_BATTERY_PRESENT 0x10
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#define ACPI_BATT_NOTIFY_STATUS 0x80
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#define ACPI_BATT_NOTIFY_INFO 0x81
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@ -67,6 +76,10 @@ typedef struct _ACPI_BIF_DATA
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CHAR OemInfo[256];
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} ACPI_BIF_DATA, *PACPI_BIF_DATA;
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#define CMBATT_AR_NOTIFY 0x01
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#define CMBATT_AR_INSERT 0x02
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#define CMBATT_AR_REMOVE 0x04
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typedef struct _CMBATT_DEVICE_EXTENSION
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{
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CMBATT_EXTENSION_TYPE FdoType;
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@ -85,11 +98,11 @@ typedef struct _CMBATT_DEVICE_EXTENSION
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ULONG DeviceId;
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PUNICODE_STRING DeviceName;
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ACPI_INTERFACE_STANDARD2 AcpiInterface;
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BOOLEAN DelayAr;
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BOOLEAN DelayedArFlag;
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BOOLEAN DelayNotification;
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BOOLEAN ArFlag;
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PVOID ClassData;
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BOOLEAN Started;
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BOOLEAN DelayNotification;
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BOOLEAN NotifySent;
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LONG ArLockValue;
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ULONG TagData;
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ULONG Tag;
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@ -157,4 +170,11 @@ CmBattGetPsrData(
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PULONG PsrData
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);
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NTSTATUS
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NTAPI
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CmBattGetStaData(
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PDEVICE_OBJECT DeviceObject,
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PULONG StaData
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);
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/* EOF */
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