acpi_status
acpi_ns_init_one_object (
	acpi_handle             obj_handle,
	u32                     level,
	void                    *context,
	void                    **return_value)
{
	acpi_object_type8       type;
	acpi_status             status;
	acpi_init_walk_info     *info = (acpi_init_walk_info *) context;
	acpi_namespace_node     *node = (acpi_namespace_node *) obj_handle;
	acpi_operand_object     *obj_desc;


	PROC_NAME ("Ns_init_one_object");


	info->object_count++;


	/* And even then, we are only interested in a few object types */

	type = acpi_ns_get_type (obj_handle);
	obj_desc = node->object;
	if (!obj_desc) {
		return (AE_OK);
	}

	if ((type != ACPI_TYPE_REGION) &&
		(type != ACPI_TYPE_BUFFER_FIELD)) {
		return (AE_OK);
	}


	/*
	 * Must lock the interpreter before executing AML code
	 */
	status = acpi_ex_enter_interpreter ();
	if (ACPI_FAILURE (status)) {
		return (status);
	}

	switch (type) {

	case ACPI_TYPE_REGION:

		info->op_region_count++;
		if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
			break;
		}

		info->op_region_init++;
		status = acpi_ds_get_region_arguments (obj_desc);
		if (ACPI_FAILURE (status)) {
			ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n"));
			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
					"%s while getting region arguments [%4.4s]\n",
					acpi_format_exception (status), (char*)&node->name));
		}

		if (!(acpi_dbg_level & ACPI_LV_INIT)) {
			ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "."));
		}

		break;


	case ACPI_TYPE_BUFFER_FIELD:

		info->field_count++;
		if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
			break;
		}

		info->field_init++;
		status = acpi_ds_get_buffer_field_arguments (obj_desc);
		if (ACPI_FAILURE (status)) {
			ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n"));
			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
					"%s while getting buffer field arguments [%4.4s]\n",
					acpi_format_exception (status), (char*)&node->name));
		}
		if (!(acpi_dbg_level & ACPI_LV_INIT)) {
			ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "."));
		}


		break;

	default:
		break;
	}


	/*
	 * We ignore errors from above, and always return OK, since
	 * we don't want to abort the walk on a single error.
	 */
	acpi_ex_exit_interpreter ();
	return (AE_OK);
//.........这里部分代码省略.........

static ACPI_STATUS
OptSearchToRoot (
    ACPI_PARSE_OBJECT       *Op,
    ACPI_WALK_STATE         *WalkState,
    ACPI_NAMESPACE_NODE     *CurrentNode,
    ACPI_NAMESPACE_NODE     *TargetNode,
    ACPI_BUFFER             *TargetPath,
    char                    **NewPath)
{
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_GENERIC_STATE      ScopeInfo;
    ACPI_STATUS             Status;
    char                    *Path;


    ACPI_FUNCTION_NAME (OptSearchToRoot);


    /*
     * Check if search-to-root can be utilized. Use the last NameSeg of
     * the NamePath and 1) See if can be found and 2) If found, make
     * sure that it is the same node that we want. If there is another
     * name in the search path before the one we want, the nodes will
     * not match, and we cannot use this optimization.
     */
    Path = &(((char *) TargetPath->Pointer)[
        TargetPath->Length - ACPI_NAME_SIZE]),
    ScopeInfo.Scope.Node = CurrentNode;

    /* Lookup the NameSeg using SEARCH_PARENT (search-to-root) */

    Status = AcpiNsLookup (&ScopeInfo, Path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
        ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
        WalkState, &(Node));
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /*
     * We found the name, but we must check to make sure that the node
     * matches. Otherwise, there is another identical name in the search
     * path that precludes the use of this optimization.
     */
    if (Node != TargetNode)
    {
        /*
         * This means that another object with the same name was found first,
         * and we cannot use this optimization.
         */
        return (AE_NOT_FOUND);
    }

    /* Found the node, we can use this optimization */

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
        "NAMESEG:   %-24s", Path));

    /* We must allocate a new string for the name (TargetPath gets deleted) */

    *NewPath = UtStringCacheCalloc (ACPI_NAME_SIZE + 1);
    strcpy (*NewPath, Path);

    if (strncmp (*NewPath, "_T_", 3))
    {
        AslError (ASL_OPTIMIZATION, ASL_MSG_SINGLE_NAME_OPTIMIZATION,
            Op, *NewPath);
    }

    return (AE_OK);
}

static ACPI_STATUS
OptOptimizeNameDeclaration (
    ACPI_PARSE_OBJECT       *Op,
    ACPI_WALK_STATE         *WalkState,
    ACPI_NAMESPACE_NODE     *CurrentNode,
    ACPI_NAMESPACE_NODE     *TargetNode,
    char                    *AmlNameString,
    char                    **NewPath)
{
    ACPI_STATUS             Status;
    char                    *NewPathExternal;
    ACPI_NAMESPACE_NODE     *Node;


    ACPI_FUNCTION_TRACE (OptOptimizeNameDeclaration);


    if (((CurrentNode == AcpiGbl_RootNode) ||
        (Op->Common.Parent->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK)) &&
            (ACPI_IS_ROOT_PREFIX (AmlNameString[0])))
    {
        /*
         * The current scope is the root, and the namepath has a root prefix
         * that is therefore extraneous. Remove it.
         */
        *NewPath = &AmlNameString[1];

        /* Debug output */

        Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, *NewPath,
            NULL, &NewPathExternal);
        if (ACPI_FAILURE (Status))
        {
            AslCoreSubsystemError (Op, Status, "Externalizing NamePath",
                ASL_NO_ABORT);
            return (Status);
        }

        /*
         * Check to make sure that the optimization finds the node we are
         * looking for. This is simply a sanity check on the new
         * path that has been created.
         *
         * We know that we are at the root, so NULL is used for the scope.
         */
        Status = AcpiNsLookup (NULL, *NewPath,
            ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
            ACPI_NS_DONT_OPEN_SCOPE, WalkState, &(Node));
        if (ACPI_SUCCESS (Status))
        {
            /* Found the namepath, but make sure the node is correct */

            if (Node == TargetNode)
            {
                /* The lookup matched the node, accept this optimization */

                AslError (ASL_OPTIMIZATION, ASL_MSG_NAME_OPTIMIZATION,
                    Op, NewPathExternal);

                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
                    "AT ROOT:   %-24s", NewPathExternal));
            }
            else
            {
                /* Node is not correct, do not use this optimization */

                Status = AE_NOT_FOUND;
                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
                    " ***** WRONG NODE"));
                AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
                    "Not using optimized name - found wrong node");
            }
        }
        else
        {
            /* The lookup failed, we obviously cannot use this optimization */

            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
                " ***** NOT FOUND"));
            AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
                "Not using optimized name - did not find node");
        }

        ACPI_FREE (NewPathExternal);
        return (Status);
    }

    /* Could not optimize */

    return (AE_NOT_FOUND);
}

ACPI_STATUS
AcpiUtOsiImplementation (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     *StringDesc;
    ACPI_OPERAND_OBJECT     *ReturnDesc;
    ACPI_INTERFACE_INFO     *InterfaceInfo;
    ACPI_INTERFACE_HANDLER  InterfaceHandler;
    ACPI_STATUS             Status;
    UINT32                  ReturnValue;


    ACPI_FUNCTION_TRACE (UtOsiImplementation);


    /* Validate the string input argument (from the AML caller) */

    StringDesc = WalkState->Arguments[0].Object;
    if (!StringDesc ||
        (StringDesc->Common.Type != ACPI_TYPE_STRING))
    {
        return_ACPI_STATUS (AE_TYPE);
    }

    /* Create a return object */

    ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
    if (!ReturnDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Default return value is 0, NOT SUPPORTED */

    ReturnValue = 0;
    Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ReturnDesc);
        return_ACPI_STATUS (Status);
    }

    /* Lookup the interface in the global _OSI list */

    InterfaceInfo = AcpiUtGetInterface (StringDesc->String.Pointer);
    if (InterfaceInfo &&
        !(InterfaceInfo->Flags & ACPI_OSI_INVALID))
    {
        /*
         * The interface is supported.
         * Update the OsiData if necessary. We keep track of the latest
         * version of Windows that has been requested by the BIOS.
         */
        if (InterfaceInfo->Value > AcpiGbl_OsiData)
        {
            AcpiGbl_OsiData = InterfaceInfo->Value;
        }

        ReturnValue = ACPI_UINT32_MAX;
    }

    AcpiOsReleaseMutex (AcpiGbl_OsiMutex);

    /*
     * Invoke an optional _OSI interface handler. The host OS may wish
     * to do some interface-specific handling. For example, warn about
     * certain interfaces or override the true/false support value.
     */
    InterfaceHandler = AcpiGbl_InterfaceHandler;
    if (InterfaceHandler)
    {
        ReturnValue = InterfaceHandler (
            StringDesc->String.Pointer, ReturnValue);
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO,
        "ACPI: BIOS _OSI(\"%s\") is %ssupported\n",
        StringDesc->String.Pointer, ReturnValue == 0 ? "not " : ""));

    /* Complete the return object */

    ReturnDesc->Integer.Value = ReturnValue;
    WalkState->ReturnDesc = ReturnDesc;
    return_ACPI_STATUS (AE_OK);
}

ACPI_STATUS
AcpiEvCreateGpeBlock (
    ACPI_NAMESPACE_NODE     *GpeDevice,
    ACPI_GENERIC_ADDRESS    *GpeBlockAddress,
    UINT32                  RegisterCount,
    UINT8                   GpeBlockBaseNumber,
    UINT32                  InterruptNumber,
    ACPI_GPE_BLOCK_INFO     **ReturnGpeBlock)
{
    ACPI_STATUS             Status;
    ACPI_GPE_BLOCK_INFO     *GpeBlock;
    ACPI_GPE_WALK_INFO      WalkInfo;


    ACPI_FUNCTION_TRACE (EvCreateGpeBlock);


    if (!RegisterCount)
    {
        return_ACPI_STATUS (AE_OK);
    }

    /* Allocate a new GPE block */

    GpeBlock = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_BLOCK_INFO));
    if (!GpeBlock)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Initialize the new GPE block */

    GpeBlock->Node = GpeDevice;
    GpeBlock->GpeCount = (UINT16) (RegisterCount * ACPI_GPE_REGISTER_WIDTH);
    GpeBlock->Initialized = FALSE;
    GpeBlock->RegisterCount = RegisterCount;
    GpeBlock->BlockBaseNumber = GpeBlockBaseNumber;

    ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress,
        sizeof (ACPI_GENERIC_ADDRESS));

    /*
     * Create the RegisterInfo and EventInfo sub-structures
     * Note: disables and clears all GPEs in the block
     */
    Status = AcpiEvCreateGpeInfoBlocks (GpeBlock);
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (GpeBlock);
        return_ACPI_STATUS (Status);
    }

    /* Install the new block in the global lists */

    Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptNumber);
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (GpeBlock->RegisterInfo);
        ACPI_FREE (GpeBlock->EventInfo);
        ACPI_FREE (GpeBlock);
        return_ACPI_STATUS (Status);
    }

    AcpiGbl_AllGpesInitialized = FALSE;

    /* Find all GPE methods (_Lxx or_Exx) for this block */

    WalkInfo.GpeBlock = GpeBlock;
    WalkInfo.GpeDevice = GpeDevice;
    WalkInfo.ExecuteByOwnerId = FALSE;

    Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice,
                ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
                AcpiEvMatchGpeMethod, NULL, &WalkInfo, NULL);

    /* Return the new block */

    if (ReturnGpeBlock)
    {
        (*ReturnGpeBlock) = GpeBlock;
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
        "    Initialized GPE %02X to %02X [%4.4s] %u regs on interrupt 0x%X\n",
        (UINT32) GpeBlock->BlockBaseNumber,
        (UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)),
        GpeDevice->Name.Ascii, GpeBlock->RegisterCount,
        InterruptNumber));

    /* Update global count of currently available GPEs */

    AcpiCurrentGpeCount += GpeBlock->GpeCount;
    return_ACPI_STATUS (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ev_gpe_initialize
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initialize the GPE data structures and the FADT GPE 0/1 blocks
 *
 ******************************************************************************/
acpi_status acpi_ev_gpe_initialize(void)
{
	u32 register_count0 = 0;
	u32 register_count1 = 0;
	u32 gpe_number_max = 0;
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_gpe_initialize);

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "Initializing General Purpose Events (GPEs):\n"));

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Initialize the GPE Block(s) defined in the FADT
	 *
	 * Why the GPE register block lengths are divided by 2:  From the ACPI
	 * Spec, section "General-Purpose Event Registers", we have:
	 *
	 * "Each register block contains two registers of equal length
	 *  GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
	 *  GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
	 *  The length of the GPE1_STS and GPE1_EN registers is equal to
	 *  half the GPE1_LEN. If a generic register block is not supported
	 *  then its respective block pointer and block length values in the
	 *  FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
	 *  to be the same size."
	 */

	/*
	 * Determine the maximum GPE number for this machine.
	 *
	 * Note: both GPE0 and GPE1 are optional, and either can exist without
	 * the other.
	 *
	 * If EITHER the register length OR the block address are zero, then that
	 * particular block is not supported.
	 */
	if (acpi_gbl_FADT.gpe0_block_length &&
	    acpi_gbl_FADT.xgpe0_block.address) {

		/* GPE block 0 exists (has both length and address > 0) */

		register_count0 = (u16)(acpi_gbl_FADT.gpe0_block_length / 2);
		gpe_number_max =
		    (register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1;

		/* Install GPE Block 0 */

		status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
						  acpi_gbl_FADT.xgpe0_block.
						  address,
						  acpi_gbl_FADT.xgpe0_block.
						  space_id, register_count0, 0,
						  acpi_gbl_FADT.sci_interrupt,
						  &acpi_gbl_gpe_fadt_blocks[0]);

		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Could not create GPE Block 0"));
		}
	}

	if (acpi_gbl_FADT.gpe1_block_length &&
	    acpi_gbl_FADT.xgpe1_block.address) {

		/* GPE block 1 exists (has both length and address > 0) */

		register_count1 = (u16)(acpi_gbl_FADT.gpe1_block_length / 2);

		/* Check for GPE0/GPE1 overlap (if both banks exist) */

		if ((register_count0) &&
		    (gpe_number_max >= acpi_gbl_FADT.gpe1_base)) {
			ACPI_ERROR((AE_INFO,
				    "GPE0 block (GPE 0 to %u) overlaps the GPE1 block "
				    "(GPE %u to %u) - Ignoring GPE1",
				    gpe_number_max, acpi_gbl_FADT.gpe1_base,
				    acpi_gbl_FADT.gpe1_base +
				    ((register_count1 *
				      ACPI_GPE_REGISTER_WIDTH) - 1)));

			/* Ignore GPE1 block by setting the register count to zero */

			register_count1 = 0;
//.........这里部分代码省略.........

ACPI_STATUS
AcpiDsScopeStackPush (
    ACPI_NAMESPACE_NODE     *Node,
    ACPI_OBJECT_TYPE        Type,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_GENERIC_STATE      *ScopeInfo;
    ACPI_GENERIC_STATE      *OldScopeInfo;


    ACPI_FUNCTION_TRACE (DsScopeStackPush);


    if (!Node)
    {
        /* Invalid scope   */

        ACPI_ERROR ((AE_INFO, "Null scope parameter"));
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Make sure object type is valid */

    if (!AcpiUtValidObjectType (Type))
    {
        ACPI_WARNING ((AE_INFO,
            "Invalid object type: 0x%X", Type));
    }

    /* Allocate a new scope object */

    ScopeInfo = AcpiUtCreateGenericState ();
    if (!ScopeInfo)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Init new scope object */

    ScopeInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_WSCOPE;
    ScopeInfo->Scope.Node = Node;
    ScopeInfo->Common.Value = (UINT16) Type;

    WalkState->ScopeDepth++;

    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
        "[%.2d] Pushed scope ", (UINT32) WalkState->ScopeDepth));

    OldScopeInfo = WalkState->ScopeInfo;
    if (OldScopeInfo)
    {
        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
            "[%4.4s] (%s)",
            AcpiUtGetNodeName (OldScopeInfo->Scope.Node),
            AcpiUtGetTypeName (OldScopeInfo->Common.Value)));
    }
    else
    {
        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
            "[\\___] (%s)", "ROOT"));
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
        ", New scope -> [%4.4s] (%s)\n",
        AcpiUtGetNodeName (ScopeInfo->Scope.Node),
        AcpiUtGetTypeName (ScopeInfo->Common.Value)));

    /* Push new scope object onto stack */

    AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo);
    return_ACPI_STATUS (AE_OK);
}

acpi_status acpi_ns_initialize_devices(void)
{
	acpi_status status;
	struct acpi_device_walk_info info;

	ACPI_FUNCTION_TRACE(ns_initialize_devices);

	/* Init counters */

	info.device_count = 0;
	info.num_STA = 0;
	info.num_INI = 0;

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "Initializing Device/Processor/Thermal objects "
			      "and executing _INI/_STA methods:\n"));

	/* Tree analysis: find all subtrees that contain _INI methods */

	status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
					ACPI_UINT32_MAX, FALSE,
					acpi_ns_find_ini_methods, NULL, &info,
					NULL);
	if (ACPI_FAILURE(status)) {
		goto error_exit;
	}

	/* Allocate the evaluation information block */

	info.evaluate_info =
	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
	if (!info.evaluate_info) {
		status = AE_NO_MEMORY;
		goto error_exit;
	}

	/*
	 * Execute the "global" _INI method that may appear at the root. This
	 * support is provided for Windows compatibility (Vista+) and is not
	 * part of the ACPI specification.
	 */
	info.evaluate_info->prefix_node = acpi_gbl_root_node;
	info.evaluate_info->relative_pathname = METHOD_NAME__INI;
	info.evaluate_info->parameters = NULL;
	info.evaluate_info->flags = ACPI_IGNORE_RETURN_VALUE;

	status = acpi_ns_evaluate(info.evaluate_info);
	if (ACPI_SUCCESS(status)) {
		info.num_INI++;
	}

	/* Walk namespace to execute all _INIs on present devices */

	status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
					ACPI_UINT32_MAX, FALSE,
					acpi_ns_init_one_device, NULL, &info,
					NULL);

	/*
	 * Any _OSI requests should be completed by now. If the BIOS has
	 * requested any Windows OSI strings, we will always truncate
	 * I/O addresses to 16 bits -- for Windows compatibility.
	 */
	if (acpi_gbl_osi_data >= ACPI_OSI_WIN_2000) {
		acpi_gbl_truncate_io_addresses = TRUE;
	}

	ACPI_FREE(info.evaluate_info);
	if (ACPI_FAILURE(status)) {
		goto error_exit;
	}

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "    Executed %u _INI methods requiring %u _STA executions "
			      "(examined %u objects)\n",
			      info.num_INI, info.num_STA, info.device_count));

	return_ACPI_STATUS(status);

error_exit:
	ACPI_EXCEPTION((AE_INFO, status, "During device initialization"));
	return_ACPI_STATUS(status);
}

acpi_status
acpi_ex_access_region (
	union acpi_operand_object       *obj_desc,
	u32                             field_datum_byte_offset,
	acpi_integer                    *value,
	u32                             function)
{
	acpi_status                     status;
	union acpi_operand_object       *rgn_desc;
	acpi_physical_address           address;


	ACPI_FUNCTION_TRACE ("ex_access_region");


	/*
	 * Ensure that the region operands are fully evaluated and verify
	 * the validity of the request
	 */
	status = acpi_ex_setup_region (obj_desc, field_datum_byte_offset);
	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	/*
	 * The physical address of this field datum is:
	 *
	 * 1) The base of the region, plus
	 * 2) The base offset of the field, plus
	 * 3) The current offset into the field
	 */
	rgn_desc = obj_desc->common_field.region_obj;
	address = rgn_desc->region.address
			 + obj_desc->common_field.base_byte_offset
			 + field_datum_byte_offset;

	if ((function & ACPI_IO_MASK) == ACPI_READ) {
		ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "[READ]"));
	}
	else {
		ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "[WRITE]"));
	}

	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_BFIELD,
		" Region [%s:%X], Width %X, byte_base %X, Offset %X at %8.8X%8.8X\n",
		acpi_ut_get_region_name (rgn_desc->region.space_id),
		rgn_desc->region.space_id,
		obj_desc->common_field.access_byte_width,
		obj_desc->common_field.base_byte_offset,
		field_datum_byte_offset,
		ACPI_HIDWORD (address), ACPI_LODWORD (address)));

	/* Invoke the appropriate address_space/op_region handler */

	status = acpi_ev_address_space_dispatch (rgn_desc, function,
			  address, ACPI_MUL_8 (obj_desc->common_field.access_byte_width), value);

	if (ACPI_FAILURE (status)) {
		if (status == AE_NOT_IMPLEMENTED) {
			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
				"Region %s(%X) not implemented\n",
				acpi_ut_get_region_name (rgn_desc->region.space_id),
				rgn_desc->region.space_id));
		}
		else if (status == AE_NOT_EXIST) {
			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
				"Region %s(%X) has no handler\n",
				acpi_ut_get_region_name (rgn_desc->region.space_id),
				rgn_desc->region.space_id));
		}
	}

	return_ACPI_STATUS (status);
}

//.........这里部分代码省略.........

	status =
	    acpi_ds_begin_method_execution(method_node, obj_desc,
					   this_walk_state);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Begin method parse/execution. Create a new walk state */

	next_walk_state =
	    acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, obj_desc,
				      thread);
	if (!next_walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/*
	 * The resolved arguments were put on the previous walk state's operand
	 * stack. Operands on the previous walk state stack always
	 * start at index 0. Also, null terminate the list of arguments
	 */
	this_walk_state->operands[this_walk_state->num_operands] = NULL;

	/*
	 * Allocate and initialize the evaluation information block
	 * TBD: this is somewhat inefficient, should change interface to
	 * ds_init_aml_walk. For now, keeps this struct off the CPU stack
	 */
	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
	if (!info) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	info->parameters = &this_walk_state->operands[0];

	status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node,
				       obj_desc->method.aml_start,
				       obj_desc->method.aml_length, info,
				       ACPI_IMODE_EXECUTE);

	ACPI_FREE(info);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	next_walk_state->method_nesting_depth =
	    this_walk_state->method_nesting_depth + 1;

	/*
	 * Delete the operands on the previous walkstate operand stack
	 * (they were copied to new objects)
	 */
	for (i = 0; i < obj_desc->method.param_count; i++) {
		acpi_ut_remove_reference(this_walk_state->operands[i]);
		this_walk_state->operands[i] = NULL;
	}

	/* Clear the operand stack */

	this_walk_state->num_operands = 0;

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "**** Begin nested execution of [%4.4s] **** WalkState=%p\n",
			  method_node->name.ascii, next_walk_state));

	this_walk_state->method_pathname =
	    acpi_ns_get_normalized_pathname(method_node, TRUE);
	this_walk_state->method_is_nested = TRUE;

	/* Optional object evaluation log */

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
			      "%-26s:  %*s%s\n", "   Nested method call",
			      next_walk_state->method_nesting_depth * 3, " ",
			      &this_walk_state->method_pathname[1]));

	/* Invoke an internal method if necessary */

	if (obj_desc->method.info_flags & ACPI_METHOD_INTERNAL_ONLY) {
		status =
		    obj_desc->method.dispatch.implementation(next_walk_state);
		if (status == AE_OK) {
			status = AE_CTRL_TERMINATE;
		}
	}

	return_ACPI_STATUS(status);

cleanup:

	/* On error, we must terminate the method properly */

	acpi_ds_terminate_control_method(obj_desc, next_walk_state);
	acpi_ds_delete_walk_state(next_walk_state);

	return_ACPI_STATUS(status);
}

//.........这里部分代码省略.........
            AcpiOsPrintf ("Table Index 0x%X\n", SourceDesc->Reference.Value);
            return_VOID;

        default:

            break;
        }

        AcpiOsPrintf ("  ");

        /* Check for valid node first, then valid object */

        if (SourceDesc->Reference.Node)
        {
            if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc->Reference.Node) !=
                    ACPI_DESC_TYPE_NAMED)
            {
                AcpiOsPrintf (" %p - Not a valid namespace node\n",
                    SourceDesc->Reference.Node);
            }
            else
            {
                AcpiOsPrintf ("Node %p [%4.4s] ", SourceDesc->Reference.Node,
                    (SourceDesc->Reference.Node)->Name.Ascii);

                switch ((SourceDesc->Reference.Node)->Type)
                {
                /* These types have no attached object */

                case ACPI_TYPE_DEVICE:
                    AcpiOsPrintf ("Device\n");
                    break;

                case ACPI_TYPE_THERMAL:
                    AcpiOsPrintf ("Thermal Zone\n");
                    break;

                default:

                    AcpiExDoDebugObject ((SourceDesc->Reference.Node)->Object,
                        Level+4, 0);
                    break;
                }
            }
        }
        else if (SourceDesc->Reference.Object)
        {
            if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc->Reference.Object) ==
                    ACPI_DESC_TYPE_NAMED)
            {
                AcpiExDoDebugObject (((ACPI_NAMESPACE_NODE *)
                    SourceDesc->Reference.Object)->Object,
                    Level+4, 0);
            }
            else
            {
                ObjectDesc = SourceDesc->Reference.Object;
                Value = SourceDesc->Reference.Value;

                switch (ObjectDesc->Common.Type)
                {
                case ACPI_TYPE_BUFFER:

                    AcpiOsPrintf ("Buffer[%u] = 0x%2.2X\n",
                        Value, *SourceDesc->Reference.IndexPointer);
                    break;

                case ACPI_TYPE_STRING:

                    AcpiOsPrintf ("String[%u] = \"%c\" (0x%2.2X)\n",
                        Value, *SourceDesc->Reference.IndexPointer,
                        *SourceDesc->Reference.IndexPointer);
                    break;

                case ACPI_TYPE_PACKAGE:

                    AcpiOsPrintf ("Package[%u] = ", Value);
                    AcpiExDoDebugObject (*SourceDesc->Reference.Where,
                        Level+4, 0);
                    break;

                default:

                    AcpiOsPrintf ("Unknown Reference object type %X\n",
                        ObjectDesc->Common.Type);
                    break;
                }
            }
        }
        break;

    default:

        AcpiOsPrintf ("%p\n", SourceDesc);
        break;
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n"));
    return_VOID;
}

acpi_status
acpi_ds_initialize_objects(u32 table_index,
			   struct acpi_namespace_node *start_node)
{
	acpi_status status;
	struct acpi_init_walk_info info;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ds_initialize_objects);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "**** Starting initialization of namespace objects ****\n"));

	/* Set all init info to zero */

	memset(&info, 0, sizeof(struct acpi_init_walk_info));

	info.owner_id = owner_id;
	info.table_index = table_index;

	/* Walk entire namespace from the supplied root */

	/*
	 * We don't use acpi_walk_namespace since we do not want to acquire
	 * the namespace reader lock.
	 */
	status =
	    acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
				   ACPI_NS_WALK_NO_UNLOCK,
				   acpi_ds_init_one_object, NULL, &info, NULL);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
	}

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* DSDT is always the first AML table */

	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT)) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
				      "\nInitializing Namespace objects:\n"));
	}

	/* Summary of objects initialized */

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
			      "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
			      table->signature, table->oem_table_id, owner_id,
			      info.object_count, info.device_count,
			      info.op_region_count, info.method_count,
			      info.serial_method_count,
			      info.non_serial_method_count,
			      info.serialized_method_count));

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
			  info.method_count, info.op_region_count));

	return_ACPI_STATUS(AE_OK);
}

acpi_status
acpi_ns_init_one_device (
	acpi_handle             obj_handle,
	u32                     nesting_level,
	void                    *context,
	void                    **return_value)
{
	acpi_status             status;
	acpi_namespace_node    *node;
	u32                     flags;
	acpi_device_walk_info  *info = (acpi_device_walk_info *) context;


	FUNCTION_TRACE ("Ns_init_one_device");


	if (!(acpi_dbg_level & ACPI_LV_INIT)) {
		ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "."));
	}

	info->device_count++;

	acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);

	node = acpi_ns_map_handle_to_node (obj_handle);
	if (!node) {
		acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
		return (AE_BAD_PARAMETER);
	}

	acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);

	/*
	 * Run _STA to determine if we can run _INI on the device.
	 */
	DEBUG_EXEC (acpi_ut_display_init_pathname (node, "_STA [Method]"));
	status = acpi_ut_execute_STA (node, &flags);
	if (ACPI_FAILURE (status)) {
		/* Ignore error and move on to next device */

		return_ACPI_STATUS (AE_OK);
	}

	info->num_STA++;

	if (!(flags & 0x01)) {
		/* don't look at children of a not present device */

		return_ACPI_STATUS(AE_CTRL_DEPTH);
	}


	/*
	 * The device is present. Run _INI.
	 */
	DEBUG_EXEC (acpi_ut_display_init_pathname (obj_handle, "_INI [Method]"));
	status = acpi_ns_evaluate_relative (obj_handle, "_INI", NULL, NULL);
	if (AE_NOT_FOUND == status) {
		/* No _INI means device requires no initialization */

		status = AE_OK;
	}

	else if (ACPI_FAILURE (status)) {
		/* Ignore error and move on to next device */

#ifdef ACPI_DEBUG
		NATIVE_CHAR *scope_name = acpi_ns_get_table_pathname (obj_handle);

		ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n",
				scope_name, acpi_format_exception (status)));

		ACPI_MEM_FREE (scope_name);
#endif
	}

	else {
		/* Count of successful INIs */

		info->num_INI++;
	}

	return_ACPI_STATUS (AE_OK);
}

static void
acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
			u32 level, u32 index)
{
	u32 i;

	ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s",
			      level, " "));

	/* Display index for package output only */

	if (index > 0) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
				      "(%.2u) ", index - 1));
	}

	if (!source_desc) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "<Null Object>\n"));
		return_VOID;
	}

	if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: ",
				      acpi_ut_get_object_type_name
				      (source_desc)));

		if (!acpi_ut_valid_internal_object(source_desc)) {
			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
					      "%p, Invalid Internal Object!\n",
					      source_desc));
			return_VOID;
		}
	} else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
		   ACPI_DESC_TYPE_NAMED) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: %p\n",
				      acpi_ut_get_type_name(((struct
							      acpi_namespace_node
							      *)source_desc)->
							    type),
				      source_desc));
		return_VOID;
	} else {
		return_VOID;
	}

	switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
	case ACPI_TYPE_INTEGER:

		/* Output correct integer width */

		if (acpi_gbl_integer_byte_width == 4) {
			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
					      (u32) source_desc->integer.
					      value));
		} else {
			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
					      "0x%8.8X%8.8X\n",
					      ACPI_FORMAT_UINT64(source_desc->
								 integer.
								 value)));
		}
		break;

	case ACPI_TYPE_BUFFER:

		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]\n",
				      (u32) source_desc->buffer.length));
		ACPI_DUMP_BUFFER(source_desc->buffer.pointer,
				 (source_desc->buffer.length <
				  32) ? source_desc->buffer.length : 32);
		break;

	case ACPI_TYPE_STRING:

		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
				      source_desc->string.length,
				      source_desc->string.pointer));
		break;

	case ACPI_TYPE_PACKAGE:

		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
				      "[0x%.2X Elements]\n",
				      source_desc->package.count));

		/* Output the entire contents of the package */

		for (i = 0; i < source_desc->package.count; i++) {
			acpi_ex_do_debug_object(source_desc->package.
						elements[i], level + 4, i + 1);
		}
		break;

	case ACPI_TYPE_LOCAL_REFERENCE:

		if (source_desc->reference.opcode == AML_INDEX_OP) {
			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
					      "[%s, 0x%X]\n",
//.........这里部分代码省略.........

//.........这里部分代码省略.........
     */
    AcpiGbl_DSDT = Table->Pointer;

    /*
     * Optionally copy the entire DSDT to local memory (instead of simply
     * mapping it.) There are some BIOSs that corrupt or replace the original
     * DSDT, creating the need for this option. Default is FALSE, do not copy
     * the DSDT.
     */
    if (AcpiGbl_CopyDsdtLocally)
    {
        NewDsdt = AcpiTbCopyDsdt (AcpiGbl_DsdtIndex);
        if (NewDsdt)
        {
            AcpiGbl_DSDT = NewDsdt;
        }
    }

    /*
     * Save the original DSDT header for detection of table corruption
     * and/or replacement of the DSDT from outside the OS.
     */
    memcpy (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT,
        sizeof (ACPI_TABLE_HEADER));

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);

    /* Load and parse tables */

    Status = AcpiNsLoadTable (AcpiGbl_DsdtIndex, AcpiGbl_RootNode);
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "[DSDT] table load failed"));
        TablesFailed++;
    }
    else
    {
        TablesLoaded++;
    }

    /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */

    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
    for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
    {
        Table = &AcpiGbl_RootTableList.Tables[i];

        if (!AcpiGbl_RootTableList.Tables[i].Address ||
            (!ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_SSDT) &&
             !ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_PSDT) &&
             !ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_OSDT)) ||
             ACPI_FAILURE (AcpiTbValidateTable (Table)))
        {
            continue;
        }

        /* Ignore errors while loading tables, get as many as possible */

        (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
        Status =  AcpiNsLoadTable (i, AcpiGbl_RootNode);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status, "(%4.4s:%8.8s) while loading table",
                Table->Signature.Ascii, Table->Pointer->OemTableId));

            TablesFailed++;

            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
                "Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n",
                Table->Signature.Ascii, Table->Pointer->OemTableId));
        }
        else
        {
            TablesLoaded++;
        }

        (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
    }

    if (!TablesFailed)
    {
        ACPI_INFO ((
            "%u ACPI AML tables successfully acquired and loaded\n",
            TablesLoaded));
    }
    else
    {
        ACPI_ERROR ((AE_INFO,
            "%u table load failures, %u successful",
            TablesFailed, TablesLoaded));

        /* Indicate at least one failure */

        Status = AE_CTRL_TERMINATE;
    }

UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
    return_ACPI_STATUS (Status);
}

ACPI_STATUS
AcpiDsInitOneObject (
    ACPI_HANDLE             ObjHandle,
    UINT32                  Level,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_OBJECT_TYPE        Type;
    ACPI_STATUS             Status;
    ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;


    ACPI_FUNCTION_NAME ("DsInitOneObject");


    /*
     * We are only interested in objects owned by the table that
     * was just loaded
     */
    if (((ACPI_NAMESPACE_NODE *) ObjHandle)->OwnerId !=
            Info->TableDesc->TableId)
    {
        return (AE_OK);
    }

    Info->ObjectCount++;

    /* And even then, we are only interested in a few object types */

    Type = AcpiNsGetType (ObjHandle);

    switch (Type)
    {
    case ACPI_TYPE_REGION:

        Status = AcpiDsInitializeRegion (ObjHandle);
        if (ACPI_FAILURE (Status))
        {
            ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region %p [%4.4s] - Init failure, %s\n",
                ObjHandle, ((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii,
                AcpiFormatException (Status)));
        }

        Info->OpRegionCount++;
        break;


    case ACPI_TYPE_METHOD:

        Info->MethodCount++;

        /* Print a dot for each method unless we are going to print the entire pathname */

        if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
        {
            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
        }

        /*
         * Set the execution data width (32 or 64) based upon the
         * revision number of the parent ACPI table.
         * TBD: This is really for possible future support of integer width
         * on a per-table basis. Currently, we just use a global for the width.
         */
        if (Info->TableDesc->Pointer->Revision == 1)
        {
            ((ACPI_NAMESPACE_NODE *) ObjHandle)->Flags |= ANOBJ_DATA_WIDTH_32;
        }

        /*
         * Always parse methods to detect errors, we may delete
         * the parse tree below
         */
        Status = AcpiDsParseMethod (ObjHandle);
        if (ACPI_FAILURE (Status))
        {
            ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",
                ObjHandle, ((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii,
                AcpiFormatException (Status)));

            /* This parse failed, but we will continue parsing more methods */

            break;
        }

        /*
         * Delete the parse tree.  We simple re-parse the method
         * for every execution since there isn't much overhead
         */
        AcpiNsDeleteNamespaceSubtree (ObjHandle);
        AcpiNsDeleteNamespaceByOwner (((ACPI_NAMESPACE_NODE *) ObjHandle)->Object->Method.OwningId);
        break;


    case ACPI_TYPE_DEVICE:

        Info->DeviceCount++;
        break;


//.........这里部分代码省略.........