main.c File Reference

#include "precomp.h"
#include <poclass.h>
#include <debug.h>

Include dependency graph for main.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
NTSTATUS NTAPI	DriverEntry (PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath)
NTSTATUS NTAPI	Bus_AddDevice (PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT PhysicalDeviceObject)
NTSTATUS NTAPI	ACPIDispatchCreateClose (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
VOID NTAPI	ButtonWaitThread (PVOID Context)
NTSTATUS NTAPI	ACPIDispatchDeviceControl (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
static NTSTATUS	AcpiRegOpenKey (IN HANDLE ParentKeyHandle, IN LPCWSTR KeyName, IN ACCESS_MASK DesiredAccess, OUT HANDLE KeyHandle)
static NTSTATUS	AcpiRegQueryValue (IN HANDLE KeyHandle, IN LPWSTR ValueName, OUT PULONG Type OPTIONAL, OUT PVOID Data OPTIONAL, IN OUT PULONG DataLength OPTIONAL)
static NTSTATUS	GetProcessorInformation (VOID)

Variables
struct acpi_device *	sleep_button
struct acpi_device *	power_button
UNICODE_STRING	ProcessorHardwareIds = {0, 0, NULL}
LPWSTR	ProcessorIdString = NULL
LPWSTR	ProcessorNameString = NULL

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 5 of file main.c.

Function Documentation

ACPIDispatchCreateClose()

NTSTATUS NTAPI ACPIDispatchCreateClose	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 179 of file main.c.

{
   Irp->IoStatus.Status = STATUS_SUCCESS;
   Irp->IoStatus.Information = 0;

   IoCompleteRequest(Irp, IO_NO_INCREMENT);

   return STATUS_SUCCESS;
}

Referenced by DriverEntry().

ACPIDispatchDeviceControl()

NTSTATUS NTAPI ACPIDispatchDeviceControl	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 227 of file main.c.

{
    PIO_STACK_LOCATION      irpStack;
    NTSTATUS                status = STATUS_NOT_SUPPORTED;
    PCOMMON_DEVICE_DATA     commonData;
    ULONG Caps = 0;
    HANDLE ThreadHandle;

    PAGED_CODE ();

    irpStack = IoGetCurrentIrpStackLocation (Irp);
    ASSERT (IRP_MJ_DEVICE_CONTROL == irpStack->MajorFunction);

    commonData = (PCOMMON_DEVICE_DATA) DeviceObject->DeviceExtension;

    Irp->IoStatus.Information = 0;

    if (!commonData->IsFDO)
    {
       switch (irpStack->Parameters.DeviceIoControl.IoControlCode)
       {
           case IOCTL_ACPI_EVAL_METHOD:
              status = Bus_PDO_EvalMethod((PPDO_DEVICE_DATA)commonData,
                                          Irp);
              break;

           case IOCTL_GET_SYS_BUTTON_CAPS:
              if (irpStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG))
              {
                  status = STATUS_BUFFER_TOO_SMALL;
                  break;
              }

              if (wcsstr(((PPDO_DEVICE_DATA)commonData)->HardwareIDs, L"PNP0C0D"))
              {
                  DPRINT1("Lid button reported to power manager\n");
                  Caps |= SYS_BUTTON_LID;
              }
              else if (((PPDO_DEVICE_DATA)commonData)->AcpiHandle == NULL)
              {
                  /* We have to return both at the same time because since we
                   * have a NULL handle we are the fixed feature DO and we will
                   * only be called once (not once per device)
                   */
                  if (power_button)
                  {
                      DPRINT("Fixed power button reported to power manager\n");
                      Caps |= SYS_BUTTON_POWER;
                  }
                  if (sleep_button)
                  {
                      DPRINT("Fixed sleep button reported to power manager\n");
                      Caps |= SYS_BUTTON_SLEEP;
                  }
              }
              else if (wcsstr(((PPDO_DEVICE_DATA)commonData)->HardwareIDs, L"PNP0C0C"))
              {
                  DPRINT("Control method power button reported to power manager\n");
                  Caps |= SYS_BUTTON_POWER;
              }
              else if (wcsstr(((PPDO_DEVICE_DATA)commonData)->HardwareIDs, L"PNP0C0E"))
              {
                  DPRINT("Control method sleep reported to power manager\n");
                  Caps |= SYS_BUTTON_SLEEP;
              }
              else
              {
                  DPRINT1("IOCTL_GET_SYS_BUTTON_CAPS sent to a non-button device\n");
                  status = STATUS_INVALID_PARAMETER;
              }

              if (Caps != 0)
              {
                  RtlCopyMemory(Irp->AssociatedIrp.SystemBuffer, &Caps, sizeof(Caps));
                  Irp->IoStatus.Information = sizeof(Caps);
                  status = STATUS_SUCCESS;
              }
              break;

           case IOCTL_GET_SYS_BUTTON_EVENT:
              PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, ButtonWaitThread, Irp);
              ZwClose(ThreadHandle);

              status = STATUS_PENDING;
              break;
           
           case IOCTL_BATTERY_QUERY_TAG:
              DPRINT("IOCTL_BATTERY_QUERY_TAG is not supported!\n");
              break;

           default:
              DPRINT1("Unsupported IOCTL: %x\n", irpStack->Parameters.DeviceIoControl.IoControlCode);
              break;
       }
    }
    else
       DPRINT1("IOCTL sent to the ACPI FDO! Kill the caller!\n");

    if (status != STATUS_PENDING)
    {
       Irp->IoStatus.Status = status;
       IoCompleteRequest(Irp, IO_NO_INCREMENT);
    }
    else
       IoMarkIrpPending(Irp);

    return status;
}

Referenced by DriverEntry().

AcpiRegOpenKey()

static NTSTATUS AcpiRegOpenKey ( IN HANDLE  ParentKeyHandle, IN LPCWSTR  KeyName, IN ACCESS_MASK  DesiredAccess, OUT HANDLE  KeyHandle  )

static

Definition at line 340 of file main.c.

{
    OBJECT_ATTRIBUTES ObjectAttributes;
    UNICODE_STRING Name;

    RtlInitUnicodeString(&Name, KeyName);

    InitializeObjectAttributes(&ObjectAttributes,
                               &Name,
                               OBJ_CASE_INSENSITIVE,
                               ParentKeyHandle,
                               NULL);

    return ZwOpenKey(KeyHandle,
                     DesiredAccess,
                     &ObjectAttributes);
}

Referenced by GetProcessorInformation().

AcpiRegQueryValue()

static NTSTATUS AcpiRegQueryValue ( IN HANDLE  KeyHandle, IN LPWSTR  ValueName, OUT PULONG Type  OPTIONAL, OUT PVOID Data  OPTIONAL, IN OUT PULONG DataLength  OPTIONAL  )

static

Definition at line 363 of file main.c.

{
    PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
    UNICODE_STRING Name;
    ULONG BufferLength = 0;
    NTSTATUS Status;

    RtlInitUnicodeString(&Name, ValueName);

    if (DataLength != NULL)
        BufferLength = *DataLength;

    /* Check if the caller provided a valid buffer */
    if ((Data != NULL) && (BufferLength != 0))
    {
        BufferLength += FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data);

        /* Allocate memory for the value */
        ValueInfo = ExAllocatePoolWithTag(PagedPool, BufferLength, 'MpcA');
        if (ValueInfo == NULL)
            return STATUS_NO_MEMORY;
    }
    else
    {
        /* Caller didn't provide a valid buffer, assume he wants the size only */
        ValueInfo = NULL;
        BufferLength = 0;
    }

    /* Query the value */
    Status = ZwQueryValueKey(KeyHandle,
                             &Name,
                             KeyValuePartialInformation,
                             ValueInfo,
                             BufferLength,
                             &BufferLength);

    if (DataLength != NULL)
        *DataLength = BufferLength;

    /* Check if we have the size only */
    if (ValueInfo == NULL)
    {
        /* Check for unexpected status */
        if ((Status != STATUS_BUFFER_OVERFLOW) &&
            (Status != STATUS_BUFFER_TOO_SMALL))
        {
            return Status;
        }

        /* All is well */
        Status = STATUS_SUCCESS;
    }
    /* Otherwise the caller wanted data back, check if we got it */
    else if (NT_SUCCESS(Status))
    {
        if (Type != NULL)
            *Type = ValueInfo->Type;

        /* Copy it */
        RtlMoveMemory(Data, ValueInfo->Data, ValueInfo->DataLength);

        /* if the type is REG_SZ and data is not 0-terminated
         * and there is enough space in the buffer NT appends a \0 */
        if (((ValueInfo->Type == REG_SZ) ||
             (ValueInfo->Type == REG_EXPAND_SZ) ||
             (ValueInfo->Type == REG_MULTI_SZ)) &&
            (ValueInfo->DataLength <= *DataLength - sizeof(WCHAR)))
        {
            WCHAR *ptr = (WCHAR *)((ULONG_PTR)Data + ValueInfo->DataLength);
            if ((ptr > (WCHAR *)Data) && ptr[-1])
                *ptr = 0;
        }
    }

    /* Free the memory and return status */
    if (ValueInfo != NULL)
    {
        ExFreePoolWithTag(ValueInfo, 'MpcA');
    }

    return Status;
}

Referenced by GetProcessorInformation().

Bus_AddDevice()

NTSTATUS NTAPI Bus_AddDevice	(	PDRIVER_OBJECT	DriverObject,
		PDEVICE_OBJECT	PhysicalDeviceObject
	)

Definition at line 31 of file main.c.

{
    NTSTATUS            status;
    PDEVICE_OBJECT      deviceObject = NULL;
    PFDO_DEVICE_DATA    deviceData = NULL;
#ifndef NDEBUG
    PWCHAR              deviceName = NULL;
    ULONG               nameLength;
#endif

    PAGED_CODE ();

    DPRINT("Add Device: 0x%p\n",  PhysicalDeviceObject);

    DPRINT("#################### Bus_CreateClose Creating FDO Device ####################\n");
    status = IoCreateDevice(DriverObject,
                      sizeof(FDO_DEVICE_DATA),
                      NULL,
                      FILE_DEVICE_ACPI,
                      FILE_DEVICE_SECURE_OPEN,
                      TRUE,
                      &deviceObject);
    if (!NT_SUCCESS(status))
    {
        DPRINT1("IoCreateDevice() failed with status 0x%X\n", status);
        goto End;
    }

    deviceData = (PFDO_DEVICE_DATA) deviceObject->DeviceExtension;
    RtlZeroMemory (deviceData, sizeof (FDO_DEVICE_DATA));

    //
    // Set the initial state of the FDO
    //

    INITIALIZE_PNP_STATE(deviceData->Common);

    deviceData->Common.IsFDO = TRUE;

    deviceData->Common.Self = deviceObject;

    ExInitializeFastMutex (&deviceData->Mutex);

    InitializeListHead (&deviceData->ListOfPDOs);

    // Set the PDO for use with PlugPlay functions

    deviceData->UnderlyingPDO = PhysicalDeviceObject;

    //
    // Set the initial powerstate of the FDO
    //

    deviceData->Common.DevicePowerState = PowerDeviceUnspecified;
    deviceData->Common.SystemPowerState = PowerSystemWorking;

    deviceObject->Flags |= DO_POWER_PAGABLE;

    //
    // Attach our FDO to the device stack.
    // The return value of IoAttachDeviceToDeviceStack is the top of the
    // attachment chain.  This is where all the IRPs should be routed.
    //

    deviceData->NextLowerDriver = IoAttachDeviceToDeviceStack (
                                    deviceObject,
                                    PhysicalDeviceObject);

    if (NULL == deviceData->NextLowerDriver) {

        status = STATUS_NO_SUCH_DEVICE;
        goto End;
    }


#ifndef NDEBUG
    //
    // We will demonstrate here the step to retrieve the name of the PDO
    //

    status = IoGetDeviceProperty (PhysicalDeviceObject,
                                  DevicePropertyPhysicalDeviceObjectName,
                                  0,
                                  NULL,
                                  &nameLength);

    if (status != STATUS_BUFFER_TOO_SMALL)
    {
        DPRINT1("AddDevice:IoGDP failed (0x%x)\n", status);
        goto End;
    }

    deviceName = ExAllocatePoolWithTag(NonPagedPool, nameLength, 'MpcA');

    if (NULL == deviceName) {
        DPRINT1("AddDevice: no memory to alloc for deviceName(0x%x)\n", nameLength);
        status =  STATUS_INSUFFICIENT_RESOURCES;
        goto End;
    }

    status = IoGetDeviceProperty (PhysicalDeviceObject,
                         DevicePropertyPhysicalDeviceObjectName,
                         nameLength,
                         deviceName,
                         &nameLength);

    if (!NT_SUCCESS (status)) {

        DPRINT1("AddDevice:IoGDP(2) failed (0x%x)", status);
        goto End;
    }

    DPRINT("AddDevice: %p to %p->%p (%ws) \n",
                   deviceObject,
                   deviceData->NextLowerDriver,
                   PhysicalDeviceObject,
                   deviceName);

#endif

    //
    // We are done with initializing, so let's indicate that and return.
    // This should be the final step in the AddDevice process.
    //
    deviceObject->Flags &= ~DO_DEVICE_INITIALIZING;

End:
#ifndef NDEBUG
    if (deviceName){
        ExFreePoolWithTag(deviceName, 'MpcA');
    }
#endif
    if (!NT_SUCCESS(status) && deviceObject){
        if (deviceData && deviceData->NextLowerDriver){
            IoDetachDevice (deviceData->NextLowerDriver);
        }
        IoDeleteDevice (deviceObject);
    }
    return status;

}

Referenced by DriverEntry().

ButtonWaitThread()

VOID NTAPI ButtonWaitThread

(

PVOID

Context

)

Definition at line 193 of file main.c.

{
    PIRP Irp = Context;
    int result;
    struct acpi_bus_event event;
    ULONG ButtonEvent;

    while (ACPI_SUCCESS(result = acpi_bus_receive_event(&event)) &&
           event.type != ACPI_BUTTON_NOTIFY_STATUS);

    if (!ACPI_SUCCESS(result))
    {
       Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
    }
    else
    {
       if (strstr(event.bus_id, "PWRF"))
           ButtonEvent = SYS_BUTTON_POWER;
       else if (strstr(event.bus_id, "SLPF"))
           ButtonEvent = SYS_BUTTON_SLEEP;
       else
           ButtonEvent = 0;

       RtlCopyMemory(Irp->AssociatedIrp.SystemBuffer, &ButtonEvent, sizeof(ButtonEvent));
       Irp->IoStatus.Status = STATUS_SUCCESS;
       Irp->IoStatus.Information = sizeof(ULONG);
    }

    IoCompleteRequest(Irp, IO_NO_INCREMENT);
}

Referenced by ACPIDispatchDeviceControl().

DriverEntry()

NTSTATUS NTAPI DriverEntry	(	PDRIVER_OBJECT	DriverObject,
		PUNICODE_STRING	RegistryPath
	)

Definition at line 690 of file main.c.

{
    NTSTATUS Status;
    DPRINT("Driver Entry \n");

    Status = GetProcessorInformation();
    if (!NT_SUCCESS(Status))
    {
        NT_ASSERT(FALSE);
        return Status;
    }

    //
    // Set entry points into the driver
    //
    DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = ACPIDispatchDeviceControl;
    DriverObject->MajorFunction [IRP_MJ_PNP] = Bus_PnP;
    DriverObject->MajorFunction [IRP_MJ_POWER] = Bus_Power;
    DriverObject->MajorFunction [IRP_MJ_CREATE] = ACPIDispatchCreateClose;
    DriverObject->MajorFunction [IRP_MJ_CLOSE] = ACPIDispatchCreateClose;

    DriverObject->DriverExtension->AddDevice = Bus_AddDevice;

    return STATUS_SUCCESS;
}

Referenced by DriverEntry().

GetProcessorInformation()

static NTSTATUS GetProcessorInformation ( VOID  )

static

Definition at line 453 of file main.c.

{
    LPWSTR ProcessorIdentifier = NULL;
    LPWSTR ProcessorVendorIdentifier = NULL;
    LPWSTR HardwareIdsBuffer = NULL;
    HANDLE ProcessorHandle = NULL;
    ULONG Length = 0, Level1Length = 0, Level2Length = 0, Level3Length = 0;
    SIZE_T HardwareIdsLength = 0;
    SIZE_T VendorIdentifierLength;
    ULONG i;
    PWCHAR Ptr;
    NTSTATUS Status;

    DPRINT("GetProcessorInformation()\n");

    /* Open the key for CPU 0 */
    Status = AcpiRegOpenKey(NULL,
                            L"\\Registry\\Machine\\Hardware\\Description\\System\\CentralProcessor\\0",
                            KEY_READ,
                            &ProcessorHandle);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to open CentralProcessor registry key: 0x%lx\n", Status);
        goto done;
    }

    /* Query the processor identifier length */
    Status = AcpiRegQueryValue(ProcessorHandle,
                               L"Identifier",
                               NULL,
                               NULL,
                               &Length);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to query Identifier value: 0x%lx\n", Status);
        goto done;
    }

    /* Remember the length as fallback for level 1-3 length */
    Level1Length = Level2Length = Level3Length = Length;

    /* Allocate a buffer large enough to be zero terminated */
    Length += sizeof(UNICODE_NULL);
    ProcessorIdentifier = ExAllocatePoolWithTag(PagedPool, Length, 'IpcA');
    if (ProcessorIdentifier == NULL)
    {
        DPRINT1("Failed to allocate 0x%lx bytes\n", Length);
        Status = STATUS_INSUFFICIENT_RESOURCES;
        goto done;
    }

    /* Query the processor identifier string */
    Status = AcpiRegQueryValue(ProcessorHandle,
                               L"Identifier",
                               NULL,
                               ProcessorIdentifier,
                               &Length);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to query Identifier value: 0x%lx\n", Status);
        goto done;
    }

    /* Query the processor name length */
    Length = 0;
    Status = AcpiRegQueryValue(ProcessorHandle,
                               L"ProcessorNameString",
                               NULL,
                               NULL,
                               &Length);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to query ProcessorNameString value: 0x%lx\n", Status);
        goto done;
    }

    /* Allocate a buffer large enough to be zero terminated */
    Length += sizeof(UNICODE_NULL);
    ProcessorNameString = ExAllocatePoolWithTag(PagedPool, Length, 'IpcA');
    if (ProcessorNameString == NULL)
    {
        DPRINT1("Failed to allocate 0x%lx bytes\n", Length);
        Status = STATUS_INSUFFICIENT_RESOURCES;
        goto done;
    }

    /* Query the processor name string */
    Status = AcpiRegQueryValue(ProcessorHandle,
                               L"ProcessorNameString",
                               NULL,
                               ProcessorNameString,
                               &Length);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to query ProcessorNameString value: 0x%lx\n", Status);
        goto done;
    }

    /* Query the vendor identifier length */
    Length = 0;
    Status = AcpiRegQueryValue(ProcessorHandle,
                               L"VendorIdentifier",
                               NULL,
                               NULL,
                               &Length);
    if (!NT_SUCCESS(Status) || (Length == 0))
    {
        DPRINT1("Failed to query VendorIdentifier value: 0x%lx\n", Status);
        goto done;
    }

    /* Allocate a buffer large enough to be zero terminated */
    Length += sizeof(UNICODE_NULL);
    ProcessorVendorIdentifier = ExAllocatePoolWithTag(PagedPool, Length, 'IpcA');
    if (ProcessorVendorIdentifier == NULL)
    {
        DPRINT1("Failed to allocate 0x%lx bytes\n", Length);
        Status = STATUS_INSUFFICIENT_RESOURCES;
        goto done;
    }

    /* Query the vendor identifier string */
    Status = AcpiRegQueryValue(ProcessorHandle,
                               L"VendorIdentifier",
                               NULL,
                               ProcessorVendorIdentifier,
                               &Length);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to query VendorIdentifier value: 0x%lx\n", Status);
        goto done;
    }

    /* Change spaces to underscores */
    for (i = 0; i < wcslen(ProcessorIdentifier); i++)
    {
        if (ProcessorIdentifier[i] == L' ')
            ProcessorIdentifier[i] = L'_';
    }

    Ptr = wcsstr(ProcessorIdentifier, L"Stepping");
    if (Ptr != NULL)
    {
        Ptr--;
        Level1Length = (ULONG)(Ptr - ProcessorIdentifier);
    }

    Ptr = wcsstr(ProcessorIdentifier, L"Model");
    if (Ptr != NULL)
    {
        Ptr--;
        Level2Length = (ULONG)(Ptr - ProcessorIdentifier);
    }

    Ptr = wcsstr(ProcessorIdentifier, L"Family");
    if (Ptr != NULL)
    {
        Ptr--;
        Level3Length = (ULONG)(Ptr - ProcessorIdentifier);
    }

    VendorIdentifierLength = (USHORT)wcslen(ProcessorVendorIdentifier);

    /* Calculate the size of the full REG_MULTI_SZ data (see swprintf below) */
    HardwareIdsLength = (5 + VendorIdentifierLength + 3 + Level1Length + 1 +
                         1 + VendorIdentifierLength + 3 + Level1Length + 1 +
                         5 + VendorIdentifierLength + 3 + Level2Length + 1 +
                         1 + VendorIdentifierLength + 3 + Level2Length + 1 +
                         5 + VendorIdentifierLength + 3 + Level3Length + 1 +
                         1 + VendorIdentifierLength + 3 + Level3Length + 1 +
                         1) * sizeof(WCHAR);

    /* Allocate a buffer to the data */
    HardwareIdsBuffer = ExAllocatePoolWithTag(PagedPool, HardwareIdsLength, 'IpcA');
    if (HardwareIdsBuffer == NULL)
    {
        Status = STATUS_INSUFFICIENT_RESOURCES;
        goto done;
    }

    Length = 0;
    Length += swprintf(&HardwareIdsBuffer[Length], L"ACPI\\%s_-_%.*s", ProcessorVendorIdentifier, Level1Length, ProcessorIdentifier);
    HardwareIdsBuffer[Length++] = UNICODE_NULL;

    Length += swprintf(&HardwareIdsBuffer[Length], L"*%s_-_%.*s", ProcessorVendorIdentifier, Level1Length, ProcessorIdentifier);
    HardwareIdsBuffer[Length++] = UNICODE_NULL;

    Length += swprintf(&HardwareIdsBuffer[Length], L"ACPI\\%s_-_%.*s", ProcessorVendorIdentifier, Level2Length, ProcessorIdentifier);
    HardwareIdsBuffer[Length++] = UNICODE_NULL;

    Length += swprintf(&HardwareIdsBuffer[Length], L"*%s_-_%.*s", ProcessorVendorIdentifier, Level2Length, ProcessorIdentifier);
    HardwareIdsBuffer[Length++] = UNICODE_NULL;

    Length += swprintf(&HardwareIdsBuffer[Length], L"ACPI\\%s_-_%.*s", ProcessorVendorIdentifier, Level3Length, ProcessorIdentifier);
    HardwareIdsBuffer[Length++] = UNICODE_NULL;

    Length += swprintf(&HardwareIdsBuffer[Length], L"*%s_-_%.*s", ProcessorVendorIdentifier, Level3Length, ProcessorIdentifier);
    HardwareIdsBuffer[Length++] = UNICODE_NULL;
    HardwareIdsBuffer[Length++] = UNICODE_NULL;

    /* Make sure we counted correctly */
    NT_ASSERT(Length * sizeof(WCHAR) == HardwareIdsLength);

    ProcessorHardwareIds.Length = (SHORT)HardwareIdsLength;
    ProcessorHardwareIds.MaximumLength = ProcessorHardwareIds.Length;
    ProcessorHardwareIds.Buffer = HardwareIdsBuffer;

    Length = (5 + VendorIdentifierLength + 3 + Level1Length + 1) * sizeof(WCHAR);
    ProcessorIdString = ExAllocatePoolWithTag(PagedPool, Length, 'IpcA');
    if (ProcessorIdString != NULL)
    {
        Length = swprintf(ProcessorIdString, L"ACPI\\%s_-_%.*s", ProcessorVendorIdentifier, Level1Length, ProcessorIdentifier);
        ProcessorIdString[Length++] = UNICODE_NULL;
        DPRINT("ProcessorIdString: %S\n", ProcessorIdString);
    }

done:
    if (ProcessorHandle != NULL)
        ZwClose(ProcessorHandle);

    if (ProcessorIdentifier != NULL)
        ExFreePoolWithTag(ProcessorIdentifier, 'IpcA');

    if (ProcessorVendorIdentifier != NULL)
        ExFreePoolWithTag(ProcessorVendorIdentifier, 'IpcA');

    if (!NT_SUCCESS(Status))
    {
        if (HardwareIdsBuffer != NULL)
            ExFreePoolWithTag(HardwareIdsBuffer, 'IpcA');
    }

    return Status;
}

Referenced by DriverEntry().

Variable Documentation

power_button

struct acpi_device* power_button

Definition at line 55 of file button.c.

Referenced by acpi_button_add(), and ACPIDispatchDeviceControl().

ProcessorHardwareIds

UNICODE_STRING ProcessorHardwareIds = {0, 0, NULL}

Definition at line 24 of file main.c.

Referenced by Bus_PDO_QueryDeviceId(), and GetProcessorInformation().

ProcessorIdString

LPWSTR ProcessorIdString = NULL

Definition at line 25 of file main.c.

Referenced by Bus_PDO_QueryDeviceId(), and GetProcessorInformation().

ProcessorNameString

LPWSTR ProcessorNameString = NULL

Definition at line 26 of file main.c.

Referenced by Bus_PDO_QueryDeviceText(), and GetProcessorInformation().

sleep_button

struct acpi_device* sleep_button

Definition at line 56 of file button.c.

Referenced by acpi_button_add(), and ACPIDispatchDeviceControl().