C++ AcpiWalkNamespace函数代码示例

static int
acpi_pci_attach(device_t dev)
{
	int busno, domain, error;

	error = pci_attach_common(dev);
	if (error)
		return (error);

	/*
	 * Since there can be multiple independantly numbered PCI
	 * busses on systems with multiple PCI domains, we can't use
	 * the unit number to decide which bus we are probing. We ask
	 * the parent pcib what our domain and bus numbers are.
	 */
	domain = pcib_get_domain(dev);
	busno = pcib_get_bus(dev);

	/*
	 * First, PCI devices are added as in the normal PCI bus driver.
	 * Afterwards, the ACPI namespace under the bridge driver is
	 * walked to save ACPI handles to all the devices that appear in
	 * the ACPI namespace as immediate descendants of the bridge.
	 *
	 * XXX: Sometimes PCI devices show up in the ACPI namespace that
	 * pci_add_children() doesn't find.  We currently just ignore
	 * these devices.
	 */
	pci_add_children(dev, domain, busno, sizeof(struct acpi_pci_devinfo));
	AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1,
	    acpi_pci_save_handle, NULL, dev, NULL);

	return (bus_generic_attach(dev));
}

ACPI_STATUS
AcpiDbFindNameInNamespace (
    char                    *NameArg)
{
    char                    AcpiName[5] = "____";
    char                    *AcpiNamePtr = AcpiName;


    if (strlen (NameArg) > 4)
    {
        AcpiOsPrintf ("Name must be no longer than 4 characters\n");
        return (AE_OK);
    }

    /* Pad out name with underscores as necessary to create a 4-char name */

    AcpiUtStrupr (NameArg);
    while (*NameArg)
    {
        *AcpiNamePtr = *NameArg;
        AcpiNamePtr++;
        NameArg++;
    }

    /* Walk the namespace from the root */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                        AcpiDbWalkAndMatchName, NULL, AcpiName, NULL);

    AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);
    return (AE_OK);
}

void
AcpiDbGetBusInfo (
    void)
{
    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                    AcpiDbBusWalk, NULL, NULL, NULL);
}

static void
AcpiDbTestAllObjects (
    void)
{
    ACPI_STATUS             Status;


    /* Install the debugger read-object control method if necessary */

    if (!ReadHandle)
    {
        Status = AcpiInstallMethod (ReadMethodCode);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("%s, Could not install debugger read method\n",
                AcpiFormatException (Status));
            return;
        }

        Status = AcpiGetHandle (NULL, ACPI_DB_READ_METHOD, &ReadHandle);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not obtain handle for debug method %s\n",
                ACPI_DB_READ_METHOD);
            return;
        }
    }

    /* Install the debugger write-object control method if necessary */

    if (!WriteHandle)
    {
        Status = AcpiInstallMethod (WriteMethodCode);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("%s, Could not install debugger write method\n",
                AcpiFormatException (Status));
            return;
        }

        Status = AcpiGetHandle (NULL, ACPI_DB_WRITE_METHOD, &WriteHandle);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not obtain handle for debug method %s\n",
                ACPI_DB_WRITE_METHOD);
            return;
        }
    }

    /* Walk the entire namespace, testing each supported named data object */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
        ACPI_UINT32_MAX, AcpiDbTestOneObject, NULL, NULL, NULL);
}

static void
acpi_dock_eject_children(device_t dev)
{
	ACPI_HANDLE	sb_handle;
	ACPI_STATUS	status;

	status = AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle);
	if (ACPI_SUCCESS(status)) {
		AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle,
		    100, acpi_dock_eject_child, &dev, NULL);
	}
}

void
AcpiDbCheckIntegrity (
    void)
{
    ACPI_INTEGRITY_INFO     Info = {0,0};

    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                    AcpiDbIntegrityWalk, NULL, (void *) &Info, NULL);

    AcpiOsPrintf ("Verified %u namespace nodes with %u Objects\n",
        Info.Nodes, Info.Objects);
}

void
AcpiDbCheckPredefinedNames (
    void)
{
    UINT32                  Count = 0;


    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                AcpiDbWalkForPredefinedNames, NULL, (void *) &Count, NULL);

    AcpiOsPrintf ("Found %u predefined names in the namespace\n", Count);
}

void
AcpiDbFindReferences (
    char                    *ObjectArg)
{
    ACPI_OPERAND_OBJECT     *ObjDesc;


    /* Convert string to object pointer */

    ObjDesc = ACPI_TO_POINTER (ACPI_STRTOUL (ObjectArg, NULL, 16));

    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                    AcpiDbWalkForReferences, NULL, (void *) ObjDesc, NULL);
}

void
AcpiDbEvaluatePredefinedNames (
    void)
{
    ACPI_DB_EXECUTE_WALK    Info;


    Info.Count = 0;
    Info.MaxCount = ACPI_UINT32_MAX;

    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                AcpiDbWalkForExecute, NULL, (void *) &Info, NULL);

    AcpiOsPrintf ("Evaluated %u predefined names in the namespace\n", Info.Count);
}

ACPI_STATUS
AcpiNsInitializeObjects (
    void)
{
    ACPI_STATUS             Status;
    ACPI_INIT_WALK_INFO     Info;


    ACPI_FUNCTION_TRACE (NsInitializeObjects);


    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
        "[Init] Completing Initialization of ACPI Objects\n"));
    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
        "**** Starting initialization of namespace objects ****\n"));
    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
        "Completing Region/Field/Buffer/Package initialization:\n"));

    /* Set all init info to zero */

    memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));

    /* Walk entire namespace from the supplied root */

    Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
        ACPI_UINT32_MAX, AcpiNsInitOneObject, NULL,
        &Info, NULL);
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
        "    Initialized %u/%u Regions %u/%u Fields %u/%u "
        "Buffers %u/%u Packages (%u nodes)\n",
        Info.OpRegionInit,  Info.OpRegionCount,
        Info.FieldInit,     Info.FieldCount,
        Info.BufferInit,    Info.BufferCount,
        Info.PackageInit,   Info.PackageCount, Info.ObjectCount));

    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
        "%u Control Methods found\n%u Op Regions found\n",
        Info.MethodCount, Info.OpRegionCount));

    return_ACPI_STATUS (AE_OK);
}

ACPI_STATUS
AcpiDbDisplayObjects (
    char                    *ObjTypeArg,
    char                    *DisplayCountArg)
{
    ACPI_WALK_INFO          Info;
    ACPI_OBJECT_TYPE        Type;


    /* Get the object type */

    Type = AcpiDbMatchArgument (ObjTypeArg, AcpiDbObjectTypes);
    if (Type == ACPI_TYPE_NOT_FOUND)
    {
        AcpiOsPrintf ("Invalid or unsupported argument\n");
        return (AE_OK);
    }

    AcpiDbSetOutputDestination (ACPI_DB_DUPLICATE_OUTPUT);
    AcpiOsPrintf (
        "Objects of type [%s] defined in the current ACPI Namespace:\n",
        AcpiUtGetTypeName (Type));

    AcpiDbSetOutputDestination (ACPI_DB_REDIRECTABLE_OUTPUT);

    Info.Count = 0;
    Info.OwnerId = ACPI_OWNER_ID_MAX;
    Info.DebugLevel = ACPI_UINT32_MAX;
    Info.DisplayType = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;

    /* Walk the namespace from the root */

    (void) AcpiWalkNamespace (Type, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                AcpiDbWalkForSpecificObjects, NULL, (void *) &Info, NULL);

    AcpiOsPrintf (
        "\nFound %u objects of type [%s] in the current ACPI Namespace\n",
        Info.Count, AcpiUtGetTypeName (Type));

    AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);
    return (AE_OK);
}

ACPI_STATUS
AcpiDsInitializeObjects (
    ACPI_TABLE_DESC         *TableDesc,
    ACPI_NAMESPACE_NODE     *StartNode)
{
    ACPI_STATUS             Status;
    ACPI_INIT_WALK_INFO     Info;


    ACPI_FUNCTION_TRACE ("DsInitializeObjects");


    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
        "**** Starting initialization of namespace objects ****\n"));
    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));

    Info.MethodCount    = 0;
    Info.OpRegionCount  = 0;
    Info.ObjectCount    = 0;
    Info.DeviceCount    = 0;
    Info.TableDesc      = TableDesc;

    /* Walk entire namespace from the supplied root */

    Status = AcpiWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
                    AcpiDsInitOneObject, &Info, NULL);
    if (ACPI_FAILURE (Status))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed, %s\n",
            AcpiFormatException (Status)));
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
        "\nTable [%4.4s] - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
        TableDesc->Pointer->Signature, Info.ObjectCount,
        Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));

    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
        "%hd Methods, %hd Regions\n", Info.MethodCount, Info.OpRegionCount));

    return_ACPI_STATUS (AE_OK);
}

static void
AcpiDbEvaluateAllPredefinedNames (
    char                    *CountArg)
{
    ACPI_DB_EXECUTE_WALK    Info;


    Info.Count = 0;
    Info.MaxCount = ACPI_UINT32_MAX;

    if (CountArg)
    {
        Info.MaxCount = ACPI_STRTOUL (CountArg, NULL, 0);
    }

    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                AcpiDbEvaluateOnePredefinedName, NULL, (void *) &Info, NULL);

    AcpiOsPrintf ("Evaluated %u predefined names in the namespace\n", Info.Count);
}

void
AcpiDbDisplayResources (
    char                    *ObjectArg)
{
    ACPI_NAMESPACE_NODE     *Node;


    AcpiDbSetOutputDestination (ACPI_DB_REDIRECTABLE_OUTPUT);
    AcpiDbgLevel |= ACPI_LV_RESOURCES;

    /* Asterisk means "display resources for all devices" */

    if (!ObjectArg || (!strcmp (ObjectArg, "*")))
    {
        (void) AcpiWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
            ACPI_UINT32_MAX, AcpiDbDeviceResources, NULL, NULL, NULL);
    }
    else
    {
        /* Convert string to object pointer */

        Node = AcpiDbConvertToNode (ObjectArg);
        if (Node)
        {
            if (Node->Type != ACPI_TYPE_DEVICE)
            {
                AcpiOsPrintf (
                    "%4.4s: Name is not a device object (%s)\n",
                    Node->Name.Ascii, AcpiUtGetTypeName (Node->Type));
            }
            else
            {
                (void) AcpiDbDeviceResources (Node, 0, NULL, NULL);
            }
        }
    }

    AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);
}

void
AcpiDbBatchExecute (
    char                    *CountArg)
{
    ACPI_EXECUTE_WALK       Info;


    Info.Count = 0;
    Info.MaxCount = ACPI_UINT32_MAX;

    if (CountArg)
    {
        Info.MaxCount = ACPI_STRTOUL (CountArg, NULL, 0);
    }


    /* Search all nodes in namespace */

    (void) AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
                AcpiDbWalkForExecute, NULL, (void *) &Info, NULL);

    AcpiOsPrintf ("Executed %u predefined names in the namespace\n", Info.Count);
}