C++ ACPI_CAST_PTR函数代码示例

//.........这里部分代码省略.........
                sizeof (ACPI_TABLE_HEADER))
        {
            AcpiOsPrintf ("Could not read the table header\n");
            return (AE_BAD_HEADER);
        }

#if 0
        /* Validate the table header/length */

        Status = AcpiTbValidateTableHeader (&TableHeader);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Table header is invalid!\n");
            return (Status);
        }
#endif

        /* File size must be at least as long as the Header-specified length */

        if (TableHeader.Length > FileSize)
        {
            AcpiOsPrintf (
                "TableHeader length [0x%X] greater than the input file size [0x%X]\n",
                TableHeader.Length, FileSize);

#ifdef ACPI_ASL_COMPILER
            Status = FlCheckForAscii (fp, NULL, FALSE);
            if (ACPI_SUCCESS (Status))
            {
                AcpiOsPrintf ("File appears to be ASCII only, must be binary\n",
                    TableHeader.Length, FileSize);
            }
#endif
            return (AE_BAD_HEADER);
        }

#ifdef ACPI_OBSOLETE_CODE
        /* We only support a limited number of table types */

        if (!ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_DSDT) &&
            !ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_PSDT) &&
            !ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_SSDT))
        {
            AcpiOsPrintf ("Table signature [%4.4s] is invalid or not supported\n",
                (char *) TableHeader.Signature);
            ACPI_DUMP_BUFFER (&TableHeader, sizeof (ACPI_TABLE_HEADER));
            return (AE_ERROR);
        }
#endif

        *TableLength = TableHeader.Length;
    }

    /* Allocate a buffer for the table */

    *Table = AcpiOsAllocate ((size_t) FileSize);
    if (!*Table)
    {
        AcpiOsPrintf (
            "Could not allocate memory for ACPI table %4.4s (size=0x%X)\n",
            TableHeader.Signature, *TableLength);
        return (AE_NO_MEMORY);
    }

    /* Get the rest of the table */

    fseek (fp, 0, SEEK_SET);
    Actual = fread (*Table, 1, (size_t) FileSize, fp);
    if (Actual == FileSize)
    {
        if (StandardHeader)
        {
            /* Now validate the checksum */

            Status = AcpiTbVerifyChecksum ((void *) *Table,
                        ACPI_CAST_PTR (ACPI_TABLE_HEADER, *Table)->Length);

            if (Status == AE_BAD_CHECKSUM)
            {
                Status = AcpiDbCheckTextModeCorruption ((UINT8 *) *Table,
                            FileSize, (*Table)->Length);
                return (Status);
            }
        }
        return (AE_OK);
    }

    if (Actual > 0)
    {
        AcpiOsPrintf ("Warning - reading table, asked for %X got %X\n",
            FileSize, Actual);
        return (AE_OK);
    }

    AcpiOsPrintf ("Error - could not read the table file\n");
    AcpiOsFree (*Table);
    *Table = NULL;
    *TableLength = 0;
    return (AE_ERROR);
}

static void
AcpiNsExecModuleCode (
    ACPI_OPERAND_OBJECT     *MethodObj,
    ACPI_EVALUATE_INFO      *Info)
{
    ACPI_OPERAND_OBJECT     *ParentObj;
    ACPI_NAMESPACE_NODE     *ParentNode;
    ACPI_OBJECT_TYPE        Type;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (NsExecModuleCode);


    /*
     * Get the parent node. We cheat by using the NextObject field
     * of the method object descriptor.
     */
    ParentNode = ACPI_CAST_PTR (
        ACPI_NAMESPACE_NODE, MethodObj->Method.NextObject);
    Type = AcpiNsGetType (ParentNode);

    /*
     * Get the region handler and save it in the method object. We may need
     * this if an operation region declaration causes a _REG method to be run.
     *
     * We can't do this in AcpiPsLinkModuleCode because
     * AcpiGbl_RootNode->Object is NULL at PASS1.
     */
    if ((Type == ACPI_TYPE_DEVICE) && ParentNode->Object)
    {
        MethodObj->Method.Dispatch.Handler =
            ParentNode->Object->Device.Handler;
    }

    /* Must clear NextObject (AcpiNsAttachObject needs the field) */

    MethodObj->Method.NextObject = NULL;

    /* Initialize the evaluation information block */

    memset (Info, 0, sizeof (ACPI_EVALUATE_INFO));
    Info->PrefixNode = ParentNode;

    /*
     * Get the currently attached parent object. Add a reference,
     * because the ref count will be decreased when the method object
     * is installed to the parent node.
     */
    ParentObj = AcpiNsGetAttachedObject (ParentNode);
    if (ParentObj)
    {
        AcpiUtAddReference (ParentObj);
    }

    /* Install the method (module-level code) in the parent node */

    Status = AcpiNsAttachObject (ParentNode, MethodObj, ACPI_TYPE_METHOD);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    /* Execute the parent node as a control method */

    Status = AcpiNsEvaluate (Info);

    ACPI_DEBUG_PRINT ((ACPI_DB_INIT_NAMES,
        "Executed module-level code at %p\n",
        MethodObj->Method.AmlStart));

    /* Delete a possible implicit return value (in slack mode) */

    if (Info->ReturnObject)
    {
        AcpiUtRemoveReference (Info->ReturnObject);
    }

    /* Detach the temporary method object */

    AcpiNsDetachObject (ParentNode);

    /* Restore the original parent object */

    if (ParentObj)
    {
        Status = AcpiNsAttachObject (ParentNode, ParentObj, Type);
    }
    else
    {
        ParentNode->Type = (UINT8) Type;
    }

Exit:
    if (ParentObj)
    {
        AcpiUtRemoveReference (ParentObj);
    }
    return_VOID;
}

//.........这里部分代码省略.........

        DdbHandle = AcpiUtCreateIntegerObject ((UINT64) 0);
        if (!DdbHandle)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        *ReturnDesc = DdbHandle;
        return_ACPI_STATUS (AE_OK);
    }

    /* Default nodes */

    StartNode = WalkState->ScopeInfo->Scope.Node;
    ParentNode = AcpiGbl_RootNode;

    /* RootPath (optional parameter) */

    if (Operand[3]->String.Length > 0)
    {
        /*
         * Find the node referenced by the RootPathString.  This is the
         * location within the namespace where the table will be loaded.
         */
        Status = AcpiNsGetNode (StartNode, Operand[3]->String.Pointer,
                    ACPI_NS_SEARCH_PARENT, &ParentNode);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /* ParameterPath (optional parameter) */

    if (Operand[4]->String.Length > 0)
    {
        if ((Operand[4]->String.Pointer[0] != '\\') &&
            (Operand[4]->String.Pointer[0] != '^'))
        {
            /*
             * Path is not absolute, so it will be relative to the node
             * referenced by the RootPathString (or the NS root if omitted)
             */
            StartNode = ParentNode;
        }

        /* Find the node referenced by the ParameterPathString */

        Status = AcpiNsGetNode (StartNode, Operand[4]->String.Pointer,
                    ACPI_NS_SEARCH_PARENT, &ParameterNode);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /* Load the table into the namespace */

    Status = AcpiExAddTable (TableIndex, ParentNode, &DdbHandle);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Parameter Data (optional) */

    if (ParameterNode)
    {
        /* Store the parameter data into the optional parameter object */

        Status = AcpiExStore (Operand[5],
                    ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode),
                    WalkState);
        if (ACPI_FAILURE (Status))
        {
            (void) AcpiExUnloadTable (DdbHandle);

            AcpiUtRemoveReference (DdbHandle);
            return_ACPI_STATUS (Status);
        }
    }

    Status = AcpiGetTableByIndex (TableIndex, &Table);
    if (ACPI_SUCCESS (Status))
    {
        ACPI_INFO ((AE_INFO, "Dynamic OEM Table Load:"));
        AcpiTbPrintTableHeader (0, Table);
    }

    /* Invoke table handler if present */

    if (AcpiGbl_TableHandler)
    {
        (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, Table,
                    AcpiGbl_TableHandlerContext);
    }

    *ReturnDesc = DdbHandle;
    return_ACPI_STATUS  (Status);
}

//.........这里部分代码省略.........
    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
        Op, Op->Asl.ParseOpName));


    /* Ignore Ops with no namespace node */

    Node = Op->Asl.Node;
    if (!Node)
    {
        return (AE_OK);
    }

    /* Get the type to determine if we should push the scope */

    if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
        (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC))
    {
        ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
    }
    else
    {
        ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
    }

    /* Push scope for Resource Templates */

    if (Op->Asl.ParseOpcode == PARSEOP_NAME)
    {
        if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
        {
            ForceNewScope = TRUE;
        }
    }

    /* Push the scope stack */

    if (ForceNewScope || AcpiNsOpensScope (ObjectType))
    {
        Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    if (Op->Asl.ParseOpcode == PARSEOP_ALIAS)
    {
        /* Complete the alias node by getting and saving the target node */

        /* First child is the alias target */

        Arg = Op->Asl.Child;

        /* Get the target pathname */

        Path = Arg->Asl.Namepath;
        if (!Path)
        {
            Status = UtInternalizeName (Arg->Asl.ExternalName, &Path);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }
        }

        /* Get the NS node associated with the target. It must exist. */

        Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
            ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
            WalkState, &TargetNode);
        if (ACPI_FAILURE (Status))
        {
            if (Status == AE_NOT_FOUND)
            {
                AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
                    Op->Asl.ExternalName);

                /*
                 * The name was not found, go ahead and create it.
                 * This prevents more errors later.
                 */
                Status = AcpiNsLookup (WalkState->ScopeInfo, Path,
                    ACPI_TYPE_ANY,
                    ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH,
                    WalkState, &(Node));
                return (AE_OK);
            }

            AslCoreSubsystemError (Op, Status,
                "Failure from namespace lookup", FALSE);
            return (AE_OK);
        }

        /* Save the target node within the alias node */

        Node->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
    }

    return (AE_OK);
}

static ACPI_STATUS
AcpiExNameSegment (
    UINT8                   **InAmlAddress,
    char                    *NameString)
{
    char                    *AmlAddress = (void *) *InAmlAddress;
    ACPI_STATUS             Status = AE_OK;
    UINT32                  Index;
    char                    CharBuf[5];


    ACPI_FUNCTION_TRACE (ExNameSegment);


    /*
     * If first character is a digit, then we know that we aren't looking at a
     * valid name segment
     */
    CharBuf[0] = *AmlAddress;

    if ('0' <= CharBuf[0] && CharBuf[0] <= '9')
    {
        ACPI_ERROR ((AE_INFO, "Invalid leading digit: %c", CharBuf[0]));
        return_ACPI_STATUS (AE_CTRL_PENDING);
    }

    ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Bytes from stream:\n"));

    for (Index = 0;
        (Index < ACPI_NAME_SIZE) && (AcpiUtValidAcpiChar (*AmlAddress, 0));
        Index++)
    {
        CharBuf[Index] = *AmlAddress++;
        ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "%c\n", CharBuf[Index]));
    }


    /* Valid name segment  */

    if (Index == 4)
    {
        /* Found 4 valid characters */

        CharBuf[4] = '\0';

        if (NameString)
        {
            ACPI_STRCAT (NameString, CharBuf);
            ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
                "Appended to - %s\n", NameString));
        }
        else
        {
            ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
                "No Name string - %s\n", CharBuf));
        }
    }
    else if (Index == 0)
    {
        /*
         * First character was not a valid name character,
         * so we are looking at something other than a name.
         */
        ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
            "Leading character is not alpha: %02Xh (not a name)\n",
            CharBuf[0]));
        Status = AE_CTRL_PENDING;
    }
    else
    {
        /*
         * Segment started with one or more valid characters, but fewer than
         * the required 4
         */
        Status = AE_AML_BAD_NAME;
        ACPI_ERROR ((AE_INFO,
            "Bad character 0x%02x in name, at %p",
            *AmlAddress, AmlAddress));
    }

    *InAmlAddress = ACPI_CAST_PTR (UINT8, AmlAddress);
    return_ACPI_STATUS (Status);
}

ACPI_STATUS
AcpiDsBuildInternalPackageObj (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  ElementCount,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_PARSE_OBJECT       *Arg;
    ACPI_PARSE_OBJECT       *Parent;
    ACPI_OPERAND_OBJECT     *ObjDesc = NULL;
    ACPI_STATUS             Status = AE_OK;
    ACPI_NATIVE_UINT        i;
    UINT16                  Index;
    UINT16                  ReferenceCount;


    ACPI_FUNCTION_TRACE (DsBuildInternalPackageObj);


    /* Find the parent of a possibly nested package */

    Parent = Op->Common.Parent;
    while ((Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
           (Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))
    {
        Parent = Parent->Common.Parent;
    }

    /*
     * If we are evaluating a Named package object "Name (xxxx, Package)",
     * the package object already exists, otherwise it must be created.
     */
    ObjDesc = *ObjDescPtr;
    if (!ObjDesc)
    {
        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
        *ObjDescPtr = ObjDesc;
        if (!ObjDesc)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        ObjDesc->Package.Node = Parent->Common.Node;
    }

    /*
     * Allocate the element array (array of pointers to the individual
     * objects) based on the NumElements parameter. Add an extra pointer slot
     * so that the list is always null terminated.
     */
    ObjDesc->Package.Elements = ACPI_ALLOCATE_ZEROED (
        ((ACPI_SIZE) ElementCount + 1) * sizeof (void *));

    if (!ObjDesc->Package.Elements)
    {
        AcpiUtDeleteObjectDesc (ObjDesc);
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    ObjDesc->Package.Count = ElementCount;

    /*
     * Initialize the elements of the package, up to the NumElements count.
     * Package is automatically padded with uninitialized (NULL) elements
     * if NumElements is greater than the package list length. Likewise,
     * Package is truncated if NumElements is less than the list length.
     */
    Arg = Op->Common.Value.Arg;
    Arg = Arg->Common.Next;
    for (i = 0; Arg && (i < ElementCount); i++)
    {
        if (Arg->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
        {
            /* This package element is already built, just get it */

            ObjDesc->Package.Elements[i] =
                ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Arg->Common.Node);
        }
        else
        {
            Status = AcpiDsBuildInternalObject (WalkState, Arg,
                        &ObjDesc->Package.Elements[i]);
        }

        if (*ObjDescPtr)
        {
            /* Existing package, get existing reference count */

            ReferenceCount = (*ObjDescPtr)->Common.ReferenceCount;
            if (ReferenceCount > 1)
            {
                /* Make new element ref count match original ref count */

                for (Index = 0; Index < (ReferenceCount - 1); Index++)
                {
                    AcpiUtAddReference ((ObjDesc->Package.Elements[i]));
                }
            }
        }

//.........这里部分代码省略.........

ACPI_STATUS
AcpiWalkResourceBuffer (
    ACPI_BUFFER                 *Buffer,
    ACPI_WALK_RESOURCE_CALLBACK UserFunction,
    void                        *Context)
{
    ACPI_STATUS                 Status = AE_OK;
    ACPI_RESOURCE               *Resource;
    ACPI_RESOURCE               *ResourceEnd;


    ACPI_FUNCTION_TRACE (AcpiWalkResourceBuffer);


    /* Parameter validation */

    if (!Buffer || !Buffer->Pointer || !UserFunction)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Buffer contains the resource list and length */

    Resource = ACPI_CAST_PTR (ACPI_RESOURCE, Buffer->Pointer);
    ResourceEnd = ACPI_ADD_PTR (
        ACPI_RESOURCE, Buffer->Pointer, Buffer->Length);

    /* Walk the resource list until the EndTag is found (or buffer end) */

    while (Resource < ResourceEnd)
    {
        /* Sanity check the resource type */

        if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
        {
            Status = AE_AML_INVALID_RESOURCE_TYPE;
            break;
        }

        /* Sanity check the length. It must not be zero, or we loop forever */

        if (!Resource->Length)
        {
            return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
        }

        /* Invoke the user function, abort on any error returned */

        Status = UserFunction (Resource, Context);
        if (ACPI_FAILURE (Status))
        {
            if (Status == AE_CTRL_TERMINATE)
            {
                /* This is an OK termination by the user function */

                Status = AE_OK;
            }
            break;
        }

        /* EndTag indicates end-of-list */

        if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
        {
            break;
        }

        /* Get the next resource descriptor */

        Resource = ACPI_NEXT_RESOURCE (Resource);
    }

    return_ACPI_STATUS (Status);
}

ACPI_STATUS
AeBuildLocalTables (
    UINT32                  TableCount,
    AE_TABLE_DESC           *TableList)
{
    ACPI_PHYSICAL_ADDRESS   DsdtAddress = 0;
    UINT32                  XsdtSize;
    AE_TABLE_DESC           *NextTable;
    UINT32                  NextIndex;
    ACPI_TABLE_FADT         *ExternalFadt = NULL;


    /*
     * Update the table count. For the DSDT, it is not put into the XSDT.
     * For the FADT, this table is already accounted for since we usually
     * install a local FADT.
     */
    NextTable = TableList;
    while (NextTable)
    {
        if (ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_DSDT) ||
                ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_FADT))
        {
            TableCount--;
        }
        NextTable = NextTable->Next;
    }

    XsdtSize = (((TableCount + 1) * sizeof (UINT64)) + sizeof (ACPI_TABLE_HEADER));
    if (AcpiGbl_LoadTestTables)
    {
        XsdtSize += BASE_XSDT_SIZE;
    }

    /* Build an XSDT */

    LocalXSDT = AcpiOsAllocate (XsdtSize);
    if (!LocalXSDT)
    {
        return (AE_NO_MEMORY);
    }

    memset (LocalXSDT, 0, XsdtSize);
    AeInitializeTableHeader ((void *) LocalXSDT, ACPI_SIG_XSDT, XsdtSize);

    LocalXSDT->TableOffsetEntry[0] = ACPI_PTR_TO_PHYSADDR (&LocalFADT);
    NextIndex = 1;

    /*
     * Install the user tables. The DSDT must be installed in the FADT.
     * All other tables are installed directly into the XSDT.
     *
     * Note: The tables are loaded in reverse order from the incoming
     * input, which makes it match the command line order.
     */
    NextTable = TableList;
    while (NextTable)
    {
        /*
         * Incoming DSDT or FADT are special cases. All other tables are
         * just immediately installed into the XSDT.
         */
        if (ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_DSDT))
        {
            if (DsdtAddress)
            {
                printf ("Already found a DSDT, only one allowed\n");
                return (AE_ALREADY_EXISTS);
            }

            /* The incoming user table is a DSDT */

            DsdtAddress = ACPI_PTR_TO_PHYSADDR (NextTable->Table);
            DsdtToInstallOverride = NextTable->Table;
        }
        else if (ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_FADT))
        {
            ExternalFadt = ACPI_CAST_PTR (ACPI_TABLE_FADT, NextTable->Table);
            LocalXSDT->TableOffsetEntry[0] = ACPI_PTR_TO_PHYSADDR (NextTable->Table);
        }
        else
        {
            /* Install the table in the XSDT */

            LocalXSDT->TableOffsetEntry[TableCount - NextIndex + 1] =
                ACPI_PTR_TO_PHYSADDR (NextTable->Table);
            NextIndex++;
        }

        NextTable = NextTable->Next;
    }

    /* Install the optional extra local tables */

    if (AcpiGbl_LoadTestTables)
    {
        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&LocalTEST);
        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&LocalBADTABLE);

        /* Install two SSDTs to test multiple table support */
//.........这里部分代码省略.........

/*******************************************************************************
 *
 * FUNCTION:    acpi_decode_pld_buffer
 *
 * PARAMETERS:  in_buffer           - Buffer returned by _PLD method
 *              length              - Length of the in_buffer
 *              return_buffer       - Where the decode buffer is returned
 *
 * RETURN:      Status and the decoded _PLD buffer. User must deallocate
 *              the buffer via ACPI_FREE.
 *
 * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
 *              a local struct that is much more useful to an ACPI driver.
 *
 ******************************************************************************/
acpi_status
acpi_decode_pld_buffer(u8 *in_buffer,
                       acpi_size length, struct acpi_pld_info ** return_buffer)
{
    struct acpi_pld_info *pld_info;
    u32 *buffer = ACPI_CAST_PTR(u32, in_buffer);
    u32 dword;

    /* Parameter validation */

    if (!in_buffer || !return_buffer || (length < 16)) {
        return (AE_BAD_PARAMETER);
    }

    pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info));
    if (!pld_info) {
        return (AE_NO_MEMORY);
    }

    /* First 32-bit DWord */

    ACPI_MOVE_32_TO_32(&dword, &buffer[0]);
    pld_info->revision = ACPI_PLD_GET_REVISION(&dword);
    pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword);
    pld_info->color = ACPI_PLD_GET_COLOR(&dword);

    /* Second 32-bit DWord */

    ACPI_MOVE_32_TO_32(&dword, &buffer[1]);
    pld_info->width = ACPI_PLD_GET_WIDTH(&dword);
    pld_info->height = ACPI_PLD_GET_HEIGHT(&dword);

    /* Third 32-bit DWord */

    ACPI_MOVE_32_TO_32(&dword, &buffer[2]);
    pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword);
    pld_info->dock = ACPI_PLD_GET_DOCK(&dword);
    pld_info->lid = ACPI_PLD_GET_LID(&dword);
    pld_info->panel = ACPI_PLD_GET_PANEL(&dword);
    pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword);
    pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword);
    pld_info->shape = ACPI_PLD_GET_SHAPE(&dword);
    pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword);
    pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword);
    pld_info->group_position = ACPI_PLD_GET_POSITION(&dword);
    pld_info->bay = ACPI_PLD_GET_BAY(&dword);

    /* Fourth 32-bit DWord */

    ACPI_MOVE_32_TO_32(&dword, &buffer[3]);
    pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword);
    pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword);
    pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword);
    pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword);
    pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword);
    pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword);
    pld_info->order = ACPI_PLD_GET_ORDER(&dword);

    if (length >= ACPI_PLD_BUFFER_SIZE) {

        /* Fifth 32-bit DWord (Revision 2 of _PLD) */

        ACPI_MOVE_32_TO_32(&dword, &buffer[4]);
        pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword);
        pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword);
    }

    *return_buffer = pld_info;
    return (AE_OK);
}

 * RETURN:      Status
 *
 * DESCRIPTION: Return the base object and type. Traverse a reference list if
 *              necessary to get to the base object.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiExResolveMultiple (
    ACPI_WALK_STATE         *WalkState,
    ACPI_OPERAND_OBJECT     *Operand,
    ACPI_OBJECT_TYPE        *ReturnType,
    ACPI_OPERAND_OBJECT     **ReturnDesc)
{
    ACPI_OPERAND_OBJECT     *ObjDesc = ACPI_CAST_PTR (void, Operand);
    ACPI_NAMESPACE_NODE     *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Operand);
    ACPI_OBJECT_TYPE        Type;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (AcpiExResolveMultiple);


    /* Operand can be either a namespace node or an operand descriptor */

    switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
    {
    case ACPI_DESC_TYPE_OPERAND:

        Type = ObjDesc->Common.Type;
        break;

ACPI_STATUS
AcpiEvMatchGpeMethod (
    ACPI_HANDLE             ObjHandle,
    UINT32                  Level,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE     *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
    ACPI_GPE_WALK_INFO      *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context);
    ACPI_GPE_EVENT_INFO     *GpeEventInfo;
    UINT32                  GpeNumber;
    char                    Name[ACPI_NAME_SIZE + 1];
    UINT8                   Type;


    ACPI_FUNCTION_TRACE (EvMatchGpeMethod);


    /* Check if requested OwnerId matches this OwnerId */

    if ((WalkInfo->ExecuteByOwnerId) &&
        (MethodNode->OwnerId != WalkInfo->OwnerId))
    {
        return_ACPI_STATUS (AE_OK);
    }

    /*
     * Match and decode the _Lxx and _Exx GPE method names
     *
     * 1) Extract the method name and null terminate it
     */
    ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer);
    Name[ACPI_NAME_SIZE] = 0;

    /* 2) Name must begin with an underscore */

    if (Name[0] != '_')
    {
        return_ACPI_STATUS (AE_OK); /* Ignore this method */
    }

    /*
     * 3) Edge/Level determination is based on the 2nd character
     *    of the method name
     */
    switch (Name[1])
    {
    case 'L':

        Type = ACPI_GPE_LEVEL_TRIGGERED;
        break;

    case 'E':

        Type = ACPI_GPE_EDGE_TRIGGERED;
        break;

    default:

        /* Unknown method type, just ignore it */

        ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
            "Ignoring unknown GPE method type: %s "
            "(name not of form _Lxx or _Exx)", Name));
        return_ACPI_STATUS (AE_OK);
    }

    /* 4) The last two characters of the name are the hex GPE Number */

    GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
    if (GpeNumber == ACPI_UINT32_MAX)
    {
        /* Conversion failed; invalid method, just ignore it */

        ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
            "Could not extract GPE number from name: %s "
            "(name is not of form _Lxx or _Exx)", Name));
        return_ACPI_STATUS (AE_OK);
    }

    /* Ensure that we have a valid GPE number for this GPE block */

    GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, WalkInfo->GpeBlock);
    if (!GpeEventInfo)
    {
        /*
         * This GpeNumber is not valid for this GPE block, just ignore it.
         * However, it may be valid for a different GPE block, since GPE0
         * and GPE1 methods both appear under \_GPE.
         */
        return_ACPI_STATUS (AE_OK);
    }

    if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
            ACPI_GPE_DISPATCH_HANDLER)
    {
        /* If there is already a handler, ignore this GPE method */

        return_ACPI_STATUS (AE_OK);
    }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++)
    {
        AcpiGbl_OwnerIdMask[i]              = 0;
    }

    /* Last OwnerID is never valid */

    AcpiGbl_OwnerIdMask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;

    /* Event counters */

    AcpiMethodCount                     = 0;
    AcpiSciCount                        = 0;
    AcpiGpeCount                        = 0;

    for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
    {
        AcpiFixedEventCount[i]              = 0;
    }

#if (!ACPI_REDUCED_HARDWARE)

    /* GPE/SCI support */

    AcpiGbl_AllGpesInitialized          = FALSE;
    AcpiGbl_GpeXruptListHead            = NULL;
    AcpiGbl_GpeFadtBlocks[0]            = NULL;
    AcpiGbl_GpeFadtBlocks[1]            = NULL;
    AcpiCurrentGpeCount                 = 0;

    AcpiGbl_GlobalEventHandler          = NULL;
    AcpiGbl_SciHandlerList              = NULL;

#endif /* !ACPI_REDUCED_HARDWARE */

    /* Global handlers */

    AcpiGbl_GlobalNotify[0].Handler     = NULL;
    AcpiGbl_GlobalNotify[1].Handler     = NULL;
    AcpiGbl_ExceptionHandler            = NULL;
    AcpiGbl_InitHandler                 = NULL;
    AcpiGbl_TableHandler                = NULL;
    AcpiGbl_InterfaceHandler            = NULL;

    /* Global Lock support */

    AcpiGbl_GlobalLockSemaphore         = NULL;
    AcpiGbl_GlobalLockMutex             = NULL;
    AcpiGbl_GlobalLockAcquired          = FALSE;
    AcpiGbl_GlobalLockHandle            = 0;
    AcpiGbl_GlobalLockPresent           = FALSE;

    /* Miscellaneous variables */

    AcpiGbl_DSDT                        = NULL;
    AcpiGbl_CmSingleStep                = FALSE;
    AcpiGbl_Shutdown                    = FALSE;
    AcpiGbl_NsLookupCount               = 0;
    AcpiGbl_PsFindCount                 = 0;
    AcpiGbl_AcpiHardwarePresent         = TRUE;
    AcpiGbl_LastOwnerIdIndex            = 0;
    AcpiGbl_NextOwnerIdOffset           = 0;
    AcpiGbl_DebuggerConfiguration       = DEBUGGER_THREADING;
    AcpiGbl_OsiMutex                    = NULL;

    /* Hardware oriented */

    AcpiGbl_EventsInitialized           = FALSE;
    AcpiGbl_SystemAwakeAndRunning       = TRUE;

    /* Namespace */

    AcpiGbl_ModuleCodeList              = NULL;
    AcpiGbl_RootNode                    = NULL;
    AcpiGbl_RootNodeStruct.Name.Integer = ACPI_ROOT_NAME;
    AcpiGbl_RootNodeStruct.DescriptorType = ACPI_DESC_TYPE_NAMED;
    AcpiGbl_RootNodeStruct.Type         = ACPI_TYPE_DEVICE;
    AcpiGbl_RootNodeStruct.Parent       = NULL;
    AcpiGbl_RootNodeStruct.Child        = NULL;
    AcpiGbl_RootNodeStruct.Peer         = NULL;
    AcpiGbl_RootNodeStruct.Object       = NULL;


#ifdef ACPI_DISASSEMBLER
    AcpiGbl_ExternalList                = NULL;
    AcpiGbl_NumExternalMethods          = 0;
    AcpiGbl_ResolvedExternalMethods     = 0;
#endif

#ifdef ACPI_DEBUG_OUTPUT
    AcpiGbl_LowestStackPointer          = ACPI_CAST_PTR (ACPI_SIZE, ACPI_SIZE_MAX);
#endif

#ifdef ACPI_DBG_TRACK_ALLOCATIONS
    AcpiGbl_DisplayFinalMemStats        = FALSE;
    AcpiGbl_DisableMemTracking          = FALSE;
#endif

    return_ACPI_STATUS (AE_OK);
}

ACPI_STATUS
AcpiDsInitObjectFromOp (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT16                  Opcode,
    ACPI_OPERAND_OBJECT     **RetObjDesc)
{
    const ACPI_OPCODE_INFO  *OpInfo;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (DsInitObjectFromOp);


    ObjDesc = *RetObjDesc;
    OpInfo = AcpiPsGetOpcodeInfo (Opcode);
    if (OpInfo->Class == AML_CLASS_UNKNOWN)
    {
        /* Unknown opcode */

        return_ACPI_STATUS (AE_TYPE);
    }

    /* Perform per-object initialization */

    switch (ObjDesc->Common.Type)
    {
    case ACPI_TYPE_BUFFER:
        /*
         * Defer evaluation of Buffer TermArg operand
         */
        ObjDesc->Buffer.Node = ACPI_CAST_PTR (
            ACPI_NAMESPACE_NODE, WalkState->Operands[0]);
        ObjDesc->Buffer.AmlStart = Op->Named.Data;
        ObjDesc->Buffer.AmlLength = Op->Named.Length;
        break;

    case ACPI_TYPE_PACKAGE:
        /*
         * Defer evaluation of Package TermArg operand and all
         * package elements. (01/2017): We defer the element
         * resolution to allow forward references from the package
         * in order to provide compatibility with other ACPI
         * implementations.
         */
        ObjDesc->Package.Node = ACPI_CAST_PTR (
            ACPI_NAMESPACE_NODE, WalkState->Operands[0]);

        if (!Op->Named.Data)
        {
            return_ACPI_STATUS (AE_OK);
        }

        ObjDesc->Package.AmlStart = Op->Named.Data;
        ObjDesc->Package.AmlLength = Op->Named.Length;
        break;

    case ACPI_TYPE_INTEGER:

        switch (OpInfo->Type)
        {
        case AML_TYPE_CONSTANT:
            /*
             * Resolve AML Constants here - AND ONLY HERE!
             * All constants are integers.
             * We mark the integer with a flag that indicates that it started
             * life as a constant -- so that stores to constants will perform
             * as expected (noop). ZeroOp is used as a placeholder for optional
             * target operands.
             */
            ObjDesc->Common.Flags = AOPOBJ_AML_CONSTANT;

            switch (Opcode)
            {
            case AML_ZERO_OP:

                ObjDesc->Integer.Value = 0;
                break;

            case AML_ONE_OP:

                ObjDesc->Integer.Value = 1;
                break;

            case AML_ONES_OP:

                ObjDesc->Integer.Value = ACPI_UINT64_MAX;

                /* Truncate value if we are executing from a 32-bit ACPI table */

                (void) AcpiExTruncateFor32bitTable (ObjDesc);
                break;

            case AML_REVISION_OP:

                ObjDesc->Integer.Value = ACPI_CA_VERSION;
                break;

            default:
//.........这里部分代码省略.........

static ACPI_STATUS
AcpiDbDeviceResources (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_NAMESPACE_NODE     *PrtNode = NULL;
    ACPI_NAMESPACE_NODE     *CrsNode = NULL;
    ACPI_NAMESPACE_NODE     *PrsNode = NULL;
    ACPI_NAMESPACE_NODE     *AeiNode = NULL;
    char                    *ParentPath;
    ACPI_BUFFER             ReturnBuffer;
    ACPI_STATUS             Status;


    Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
    ParentPath = AcpiNsGetExternalPathname (Node);
    if (!ParentPath)
    {
        return (AE_NO_MEMORY);
    }

    /* Get handles to the resource methods for this device */

    (void) AcpiGetHandle (Node, METHOD_NAME__PRT, ACPI_CAST_PTR (ACPI_HANDLE, &PrtNode));
    (void) AcpiGetHandle (Node, METHOD_NAME__CRS, ACPI_CAST_PTR (ACPI_HANDLE, &CrsNode));
    (void) AcpiGetHandle (Node, METHOD_NAME__PRS, ACPI_CAST_PTR (ACPI_HANDLE, &PrsNode));
    (void) AcpiGetHandle (Node, METHOD_NAME__AEI, ACPI_CAST_PTR (ACPI_HANDLE, &AeiNode));
    if (!PrtNode && !CrsNode && !PrsNode && !AeiNode)
    {
        goto Cleanup;   /* Nothing to do */
    }

    AcpiOsPrintf ("\nDevice: %s\n", ParentPath);

    /* Prepare for a return object of arbitrary size */

    ReturnBuffer.Pointer = AcpiGbl_DbBuffer;
    ReturnBuffer.Length  = ACPI_DEBUG_BUFFER_SIZE;


    /* _PRT */

    if (PrtNode)
    {
        AcpiOsPrintf ("Evaluating _PRT\n");

        Status = AcpiEvaluateObject (PrtNode, NULL, NULL, &ReturnBuffer);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not evaluate _PRT: %s\n",
                AcpiFormatException (Status));
            goto GetCrs;
        }

        ReturnBuffer.Pointer = AcpiGbl_DbBuffer;
        ReturnBuffer.Length  = ACPI_DEBUG_BUFFER_SIZE;

        Status = AcpiGetIrqRoutingTable (Node, &ReturnBuffer);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("GetIrqRoutingTable failed: %s\n",
                AcpiFormatException (Status));
            goto GetCrs;
        }

        AcpiRsDumpIrqList (ACPI_CAST_PTR (UINT8, AcpiGbl_DbBuffer));
    }


    /* _CRS */

GetCrs:
    if (CrsNode)
    {
        AcpiOsPrintf ("Evaluating _CRS\n");

        ReturnBuffer.Pointer = AcpiGbl_DbBuffer;
        ReturnBuffer.Length  = ACPI_DEBUG_BUFFER_SIZE;

        Status = AcpiEvaluateObject (CrsNode, NULL, NULL, &ReturnBuffer);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not evaluate _CRS: %s\n",
                AcpiFormatException (Status));
            goto GetPrs;
        }

        /* This code exercises the AcpiWalkResources interface */

        Status = AcpiWalkResources (Node, METHOD_NAME__CRS,
            AcpiDbResourceCallback, NULL);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("AcpiWalkResources failed: %s\n",
                AcpiFormatException (Status));
            goto GetPrs;
        }
//.........这里部分代码省略.........

ACPI_STATUS
AcpiNsEvaluate (
    ACPI_EVALUATE_INFO      *Info)
{
    ACPI_STATUS             Status;
    ACPI_NAMESPACE_NODE     *Node;


    ACPI_FUNCTION_TRACE (NsEvaluate);


    if (!Info)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Initialize the return value to an invalid object */

    Info->ReturnObject = NULL;
    Info->ParamCount = 0;

    if (!Info->ResolvedNode)
    {
        /*
         * Get the actual namespace node for the target object if we need to.
         * Handles these cases:
         *
         * 1) Null node, Pathname (absolute path)
         * 2) Node, Pathname (path relative to Node)
         * 3) Node, Null Pathname
         */
        Status = AcpiNsGetNode (Info->PrefixNode, Info->Pathname,
                    ACPI_NS_NO_UPSEARCH, &Info->ResolvedNode);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * For a method alias, we must grab the actual method node so that proper
     * scoping context will be established before execution.
     */
    if (AcpiNsGetType (Info->ResolvedNode) == ACPI_TYPE_LOCAL_METHOD_ALIAS)
    {
        Info->ResolvedNode =
            ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Info->ResolvedNode->Object);
    }

    ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "%s [%p] Value %p\n", Info->Pathname,
        Info->ResolvedNode, AcpiNsGetAttachedObject (Info->ResolvedNode)));

    Node = Info->ResolvedNode;

    /*
     * Two major cases here:
     *
     * 1) The object is a control method -- execute it
     * 2) The object is not a method -- just return it's current value
     */
    if (AcpiNsGetType (Info->ResolvedNode) == ACPI_TYPE_METHOD)
    {
        /*
         * 1) Object is a control method - execute it
         */

        /* Verify that there is a method object associated with this node */

        Info->ObjDesc = AcpiNsGetAttachedObject (Info->ResolvedNode);
        if (!Info->ObjDesc)
        {
            ACPI_ERROR ((AE_INFO, "Control method has no attached sub-object"));
            return_ACPI_STATUS (AE_NULL_OBJECT);
        }

        /* Count the number of arguments being passed to the method */

        if (Info->Parameters)
        {
            while (Info->Parameters[Info->ParamCount])
            {
                if (Info->ParamCount > ACPI_METHOD_MAX_ARG)
                {
                    return_ACPI_STATUS (AE_LIMIT);
                }
                Info->ParamCount++;
            }
        }

        ACPI_DUMP_PATHNAME (Info->ResolvedNode, "ACPI: Execute Method",
            ACPI_LV_INFO, _COMPONENT);

        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "Method at AML address %p Length %X\n",
            Info->ObjDesc->Method.AmlStart + 1,
            Info->ObjDesc->Method.AmlLength - 1));

        /*
         * Any namespace deletion must acquire both the namespace and
         * interpreter locks to ensure that no thread is using the portion of
//.........这里部分代码省略.........