10d02842fSSascha Wildner /******************************************************************************
20d02842fSSascha Wildner *
30d02842fSSascha Wildner * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes)
40d02842fSSascha Wildner *
50d02842fSSascha Wildner *****************************************************************************/
60d02842fSSascha Wildner
7b4315fc7SSascha Wildner /******************************************************************************
8b4315fc7SSascha Wildner *
9b4315fc7SSascha Wildner * 1. Copyright Notice
10b4315fc7SSascha Wildner *
11383048acSSascha Wildner * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp.
120d02842fSSascha Wildner * All rights reserved.
130d02842fSSascha Wildner *
14b4315fc7SSascha Wildner * 2. License
15b4315fc7SSascha Wildner *
16b4315fc7SSascha Wildner * 2.1. This is your license from Intel Corp. under its intellectual property
17b4315fc7SSascha Wildner * rights. You may have additional license terms from the party that provided
18b4315fc7SSascha Wildner * you this software, covering your right to use that party's intellectual
19b4315fc7SSascha Wildner * property rights.
20b4315fc7SSascha Wildner *
21b4315fc7SSascha Wildner * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22b4315fc7SSascha Wildner * copy of the source code appearing in this file ("Covered Code") an
23b4315fc7SSascha Wildner * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24b4315fc7SSascha Wildner * base code distributed originally by Intel ("Original Intel Code") to copy,
25b4315fc7SSascha Wildner * make derivatives, distribute, use and display any portion of the Covered
26b4315fc7SSascha Wildner * Code in any form, with the right to sublicense such rights; and
27b4315fc7SSascha Wildner *
28b4315fc7SSascha Wildner * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29b4315fc7SSascha Wildner * license (with the right to sublicense), under only those claims of Intel
30b4315fc7SSascha Wildner * patents that are infringed by the Original Intel Code, to make, use, sell,
31b4315fc7SSascha Wildner * offer to sell, and import the Covered Code and derivative works thereof
32b4315fc7SSascha Wildner * solely to the minimum extent necessary to exercise the above copyright
33b4315fc7SSascha Wildner * license, and in no event shall the patent license extend to any additions
34b4315fc7SSascha Wildner * to or modifications of the Original Intel Code. No other license or right
35b4315fc7SSascha Wildner * is granted directly or by implication, estoppel or otherwise;
36b4315fc7SSascha Wildner *
37b4315fc7SSascha Wildner * The above copyright and patent license is granted only if the following
38b4315fc7SSascha Wildner * conditions are met:
39b4315fc7SSascha Wildner *
40b4315fc7SSascha Wildner * 3. Conditions
41b4315fc7SSascha Wildner *
42b4315fc7SSascha Wildner * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered
44b4315fc7SSascha Wildner * Code or modification with rights to further distribute source must include
45b4315fc7SSascha Wildner * the above Copyright Notice, the above License, this list of Conditions,
46b4315fc7SSascha Wildner * and the following Disclaimer and Export Compliance provision. In addition,
47b4315fc7SSascha Wildner * Licensee must cause all Covered Code to which Licensee contributes to
48b4315fc7SSascha Wildner * contain a file documenting the changes Licensee made to create that Covered
49b4315fc7SSascha Wildner * Code and the date of any change. Licensee must include in that file the
50b4315fc7SSascha Wildner * documentation of any changes made by any predecessor Licensee. Licensee
51b4315fc7SSascha Wildner * must include a prominent statement that the modification is derived,
52b4315fc7SSascha Wildner * directly or indirectly, from Original Intel Code.
53b4315fc7SSascha Wildner *
54b4315fc7SSascha Wildner * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered
56b4315fc7SSascha Wildner * Code or modification without rights to further distribute source must
57b4315fc7SSascha Wildner * include the following Disclaimer and Export Compliance provision in the
58b4315fc7SSascha Wildner * documentation and/or other materials provided with distribution. In
59b4315fc7SSascha Wildner * addition, Licensee may not authorize further sublicense of source of any
60b4315fc7SSascha Wildner * portion of the Covered Code, and must include terms to the effect that the
61b4315fc7SSascha Wildner * license from Licensee to its licensee is limited to the intellectual
62b4315fc7SSascha Wildner * property embodied in the software Licensee provides to its licensee, and
63b4315fc7SSascha Wildner * not to intellectual property embodied in modifications its licensee may
64b4315fc7SSascha Wildner * make.
65b4315fc7SSascha Wildner *
66b4315fc7SSascha Wildner * 3.3. Redistribution of Executable. Redistribution in executable form of any
67b4315fc7SSascha Wildner * substantial portion of the Covered Code or modification must reproduce the
68b4315fc7SSascha Wildner * above Copyright Notice, and the following Disclaimer and Export Compliance
69b4315fc7SSascha Wildner * provision in the documentation and/or other materials provided with the
70b4315fc7SSascha Wildner * distribution.
71b4315fc7SSascha Wildner *
72b4315fc7SSascha Wildner * 3.4. Intel retains all right, title, and interest in and to the Original
73b4315fc7SSascha Wildner * Intel Code.
74b4315fc7SSascha Wildner *
75b4315fc7SSascha Wildner * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76b4315fc7SSascha Wildner * Intel shall be used in advertising or otherwise to promote the sale, use or
77b4315fc7SSascha Wildner * other dealings in products derived from or relating to the Covered Code
78b4315fc7SSascha Wildner * without prior written authorization from Intel.
79b4315fc7SSascha Wildner *
80b4315fc7SSascha Wildner * 4. Disclaimer and Export Compliance
81b4315fc7SSascha Wildner *
82b4315fc7SSascha Wildner * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83b4315fc7SSascha Wildner * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84b4315fc7SSascha Wildner * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85b4315fc7SSascha Wildner * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86b4315fc7SSascha Wildner
87b4315fc7SSascha Wildner * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88b4315fc7SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89b4315fc7SSascha Wildner * PARTICULAR PURPOSE.
90b4315fc7SSascha Wildner *
91b4315fc7SSascha Wildner * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92b4315fc7SSascha Wildner * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93b4315fc7SSascha Wildner * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94b4315fc7SSascha Wildner * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95b4315fc7SSascha Wildner * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96b4315fc7SSascha Wildner * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97b4315fc7SSascha Wildner * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98b4315fc7SSascha Wildner * LIMITED REMEDY.
99b4315fc7SSascha Wildner *
100b4315fc7SSascha Wildner * 4.3. Licensee shall not export, either directly or indirectly, any of this
101b4315fc7SSascha Wildner * software or system incorporating such software without first obtaining any
102b4315fc7SSascha Wildner * required license or other approval from the U. S. Department of Commerce or
103b4315fc7SSascha Wildner * any other agency or department of the United States Government. In the
104b4315fc7SSascha Wildner * event Licensee exports any such software from the United States or
105b4315fc7SSascha Wildner * re-exports any such software from a foreign destination, Licensee shall
106b4315fc7SSascha Wildner * ensure that the distribution and export/re-export of the software is in
107b4315fc7SSascha Wildner * compliance with all laws, regulations, orders, or other restrictions of the
108b4315fc7SSascha Wildner * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109b4315fc7SSascha Wildner * any of its subsidiaries will export/re-export any technical data, process,
110b4315fc7SSascha Wildner * software, or service, directly or indirectly, to any country for which the
111b4315fc7SSascha Wildner * United States government or any agency thereof requires an export license,
112b4315fc7SSascha Wildner * other governmental approval, or letter of assurance, without first obtaining
113b4315fc7SSascha Wildner * such license, approval or letter.
114b4315fc7SSascha Wildner *
115b4315fc7SSascha Wildner *****************************************************************************
116b4315fc7SSascha Wildner *
117b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the
118b4315fc7SSascha Wildner * following license:
119b4315fc7SSascha Wildner *
1200d02842fSSascha Wildner * Redistribution and use in source and binary forms, with or without
1210d02842fSSascha Wildner * modification, are permitted provided that the following conditions
1220d02842fSSascha Wildner * are met:
1230d02842fSSascha Wildner * 1. Redistributions of source code must retain the above copyright
1240d02842fSSascha Wildner * notice, this list of conditions, and the following disclaimer,
1250d02842fSSascha Wildner * without modification.
1260d02842fSSascha Wildner * 2. Redistributions in binary form must reproduce at minimum a disclaimer
1270d02842fSSascha Wildner * substantially similar to the "NO WARRANTY" disclaimer below
1280d02842fSSascha Wildner * ("Disclaimer") and any redistribution must be conditioned upon
1290d02842fSSascha Wildner * including a substantially similar Disclaimer requirement for further
1300d02842fSSascha Wildner * binary redistribution.
1310d02842fSSascha Wildner * 3. Neither the names of the above-listed copyright holders nor the names
1320d02842fSSascha Wildner * of any contributors may be used to endorse or promote products derived
1330d02842fSSascha Wildner * from this software without specific prior written permission.
1340d02842fSSascha Wildner *
135b4315fc7SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
136b4315fc7SSascha Wildner * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
137b4315fc7SSascha Wildner * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
138b4315fc7SSascha Wildner * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
139b4315fc7SSascha Wildner * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
140b4315fc7SSascha Wildner * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
141b4315fc7SSascha Wildner * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
142b4315fc7SSascha Wildner * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
143b4315fc7SSascha Wildner * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
144b4315fc7SSascha Wildner * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
145b4315fc7SSascha Wildner * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146b4315fc7SSascha Wildner *
147b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the
1480d02842fSSascha Wildner * GNU General Public License ("GPL") version 2 as published by the Free
1490d02842fSSascha Wildner * Software Foundation.
1500d02842fSSascha Wildner *
151b4315fc7SSascha Wildner *****************************************************************************/
1520d02842fSSascha Wildner
1530d02842fSSascha Wildner #include "acpi.h"
1540d02842fSSascha Wildner #include "accommon.h"
1550d02842fSSascha Wildner #include "acinterp.h"
1560d02842fSSascha Wildner #include "acnamesp.h"
1570d02842fSSascha Wildner #include "actables.h"
1580d02842fSSascha Wildner #include "acdispat.h"
1590d02842fSSascha Wildner #include "acevents.h"
1600d02842fSSascha Wildner #include "amlcode.h"
1610d02842fSSascha Wildner
1620d02842fSSascha Wildner
1630d02842fSSascha Wildner #define _COMPONENT ACPI_EXECUTER
1640d02842fSSascha Wildner ACPI_MODULE_NAME ("exconfig")
1650d02842fSSascha Wildner
1660d02842fSSascha Wildner /* Local prototypes */
1670d02842fSSascha Wildner
1680d02842fSSascha Wildner static ACPI_STATUS
1690d02842fSSascha Wildner AcpiExAddTable (
1700d02842fSSascha Wildner UINT32 TableIndex,
1710d02842fSSascha Wildner ACPI_OPERAND_OBJECT **DdbHandle);
1720d02842fSSascha Wildner
1730d02842fSSascha Wildner static ACPI_STATUS
1740d02842fSSascha Wildner AcpiExRegionRead (
1750d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc,
1760d02842fSSascha Wildner UINT32 Length,
1770d02842fSSascha Wildner UINT8 *Buffer);
1780d02842fSSascha Wildner
1790d02842fSSascha Wildner
1800d02842fSSascha Wildner /*******************************************************************************
1810d02842fSSascha Wildner *
1820d02842fSSascha Wildner * FUNCTION: AcpiExAddTable
1830d02842fSSascha Wildner *
1840d02842fSSascha Wildner * PARAMETERS: Table - Pointer to raw table
1850d02842fSSascha Wildner * ParentNode - Where to load the table (scope)
1860d02842fSSascha Wildner * DdbHandle - Where to return the table handle.
1870d02842fSSascha Wildner *
1880d02842fSSascha Wildner * RETURN: Status
1890d02842fSSascha Wildner *
1900d02842fSSascha Wildner * DESCRIPTION: Common function to Install and Load an ACPI table with a
1910d02842fSSascha Wildner * returned table handle.
1920d02842fSSascha Wildner *
1930d02842fSSascha Wildner ******************************************************************************/
1940d02842fSSascha Wildner
1950d02842fSSascha Wildner static ACPI_STATUS
AcpiExAddTable(UINT32 TableIndex,ACPI_OPERAND_OBJECT ** DdbHandle)1960d02842fSSascha Wildner AcpiExAddTable (
1970d02842fSSascha Wildner UINT32 TableIndex,
1980d02842fSSascha Wildner ACPI_OPERAND_OBJECT **DdbHandle)
1990d02842fSSascha Wildner {
2000d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc;
2010d02842fSSascha Wildner
2020d02842fSSascha Wildner
2030d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExAddTable);
2040d02842fSSascha Wildner
2050d02842fSSascha Wildner
2060d02842fSSascha Wildner /* Create an object to be the table handle */
2070d02842fSSascha Wildner
2080d02842fSSascha Wildner ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
2090d02842fSSascha Wildner if (!ObjDesc)
2100d02842fSSascha Wildner {
2110d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY);
2120d02842fSSascha Wildner }
2130d02842fSSascha Wildner
2140d02842fSSascha Wildner /* Init the table handle */
2150d02842fSSascha Wildner
2160d02842fSSascha Wildner ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID;
2170d02842fSSascha Wildner ObjDesc->Reference.Class = ACPI_REFCLASS_TABLE;
2180d02842fSSascha Wildner ObjDesc->Reference.Value = TableIndex;
219e5e174adSSascha Wildner *DdbHandle = ObjDesc;
2200d02842fSSascha Wildner return_ACPI_STATUS (AE_OK);
2210d02842fSSascha Wildner }
2220d02842fSSascha Wildner
2230d02842fSSascha Wildner
2240d02842fSSascha Wildner /*******************************************************************************
2250d02842fSSascha Wildner *
2260d02842fSSascha Wildner * FUNCTION: AcpiExLoadTableOp
2270d02842fSSascha Wildner *
2280d02842fSSascha Wildner * PARAMETERS: WalkState - Current state with operands
2290d02842fSSascha Wildner * ReturnDesc - Where to store the return object
2300d02842fSSascha Wildner *
2310d02842fSSascha Wildner * RETURN: Status
2320d02842fSSascha Wildner *
2330d02842fSSascha Wildner * DESCRIPTION: Load an ACPI table from the RSDT/XSDT
2340d02842fSSascha Wildner *
2350d02842fSSascha Wildner ******************************************************************************/
2360d02842fSSascha Wildner
2370d02842fSSascha Wildner ACPI_STATUS
AcpiExLoadTableOp(ACPI_WALK_STATE * WalkState,ACPI_OPERAND_OBJECT ** ReturnDesc)2380d02842fSSascha Wildner AcpiExLoadTableOp (
2390d02842fSSascha Wildner ACPI_WALK_STATE *WalkState,
2400d02842fSSascha Wildner ACPI_OPERAND_OBJECT **ReturnDesc)
2410d02842fSSascha Wildner {
2420d02842fSSascha Wildner ACPI_STATUS Status;
2430d02842fSSascha Wildner ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
2440d02842fSSascha Wildner ACPI_NAMESPACE_NODE *ParentNode;
2450d02842fSSascha Wildner ACPI_NAMESPACE_NODE *StartNode;
2460d02842fSSascha Wildner ACPI_NAMESPACE_NODE *ParameterNode = NULL;
2470d02842fSSascha Wildner ACPI_OPERAND_OBJECT *DdbHandle;
2480d02842fSSascha Wildner UINT32 TableIndex;
2490d02842fSSascha Wildner
2500d02842fSSascha Wildner
2510d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExLoadTableOp);
2520d02842fSSascha Wildner
2530d02842fSSascha Wildner
2540d02842fSSascha Wildner /* Find the ACPI table in the RSDT/XSDT */
2550d02842fSSascha Wildner
256e5e174adSSascha Wildner AcpiExExitInterpreter ();
2570d02842fSSascha Wildner Status = AcpiTbFindTable (
2580d02842fSSascha Wildner Operand[0]->String.Pointer,
2590d02842fSSascha Wildner Operand[1]->String.Pointer,
2600d02842fSSascha Wildner Operand[2]->String.Pointer, &TableIndex);
261e5e174adSSascha Wildner AcpiExEnterInterpreter ();
2620d02842fSSascha Wildner if (ACPI_FAILURE (Status))
2630d02842fSSascha Wildner {
2640d02842fSSascha Wildner if (Status != AE_NOT_FOUND)
2650d02842fSSascha Wildner {
2660d02842fSSascha Wildner return_ACPI_STATUS (Status);
2670d02842fSSascha Wildner }
2680d02842fSSascha Wildner
2690d02842fSSascha Wildner /* Table not found, return an Integer=0 and AE_OK */
2700d02842fSSascha Wildner
2710d02842fSSascha Wildner DdbHandle = AcpiUtCreateIntegerObject ((UINT64) 0);
2720d02842fSSascha Wildner if (!DdbHandle)
2730d02842fSSascha Wildner {
2740d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY);
2750d02842fSSascha Wildner }
2760d02842fSSascha Wildner
2770d02842fSSascha Wildner *ReturnDesc = DdbHandle;
2780d02842fSSascha Wildner return_ACPI_STATUS (AE_OK);
2790d02842fSSascha Wildner }
2800d02842fSSascha Wildner
2810d02842fSSascha Wildner /* Default nodes */
2820d02842fSSascha Wildner
2830d02842fSSascha Wildner StartNode = WalkState->ScopeInfo->Scope.Node;
2840d02842fSSascha Wildner ParentNode = AcpiGbl_RootNode;
2850d02842fSSascha Wildner
2860d02842fSSascha Wildner /* RootPath (optional parameter) */
2870d02842fSSascha Wildner
2880d02842fSSascha Wildner if (Operand[3]->String.Length > 0)
2890d02842fSSascha Wildner {
2900d02842fSSascha Wildner /*
2910d02842fSSascha Wildner * Find the node referenced by the RootPathString. This is the
2920d02842fSSascha Wildner * location within the namespace where the table will be loaded.
2930d02842fSSascha Wildner */
294e5e174adSSascha Wildner Status = AcpiNsGetNodeUnlocked (StartNode,
295e5e174adSSascha Wildner Operand[3]->String.Pointer, ACPI_NS_SEARCH_PARENT,
296e5e174adSSascha Wildner &ParentNode);
2970d02842fSSascha Wildner if (ACPI_FAILURE (Status))
2980d02842fSSascha Wildner {
2990d02842fSSascha Wildner return_ACPI_STATUS (Status);
3000d02842fSSascha Wildner }
3010d02842fSSascha Wildner }
3020d02842fSSascha Wildner
3030d02842fSSascha Wildner /* ParameterPath (optional parameter) */
3040d02842fSSascha Wildner
3050d02842fSSascha Wildner if (Operand[4]->String.Length > 0)
3060d02842fSSascha Wildner {
3070d02842fSSascha Wildner if ((Operand[4]->String.Pointer[0] != AML_ROOT_PREFIX) &&
3080d02842fSSascha Wildner (Operand[4]->String.Pointer[0] != AML_PARENT_PREFIX))
3090d02842fSSascha Wildner {
3100d02842fSSascha Wildner /*
3110d02842fSSascha Wildner * Path is not absolute, so it will be relative to the node
3120d02842fSSascha Wildner * referenced by the RootPathString (or the NS root if omitted)
3130d02842fSSascha Wildner */
3140d02842fSSascha Wildner StartNode = ParentNode;
3150d02842fSSascha Wildner }
3160d02842fSSascha Wildner
3170d02842fSSascha Wildner /* Find the node referenced by the ParameterPathString */
3180d02842fSSascha Wildner
319e5e174adSSascha Wildner Status = AcpiNsGetNodeUnlocked (StartNode,
320e5e174adSSascha Wildner Operand[4]->String.Pointer, ACPI_NS_SEARCH_PARENT,
321e5e174adSSascha Wildner &ParameterNode);
3220d02842fSSascha Wildner if (ACPI_FAILURE (Status))
3230d02842fSSascha Wildner {
3240d02842fSSascha Wildner return_ACPI_STATUS (Status);
3250d02842fSSascha Wildner }
3260d02842fSSascha Wildner }
3270d02842fSSascha Wildner
3280d02842fSSascha Wildner /* Load the table into the namespace */
3290d02842fSSascha Wildner
330e5e174adSSascha Wildner ACPI_INFO (("Dynamic OEM Table Load:"));
331e5e174adSSascha Wildner AcpiExExitInterpreter ();
332e5e174adSSascha Wildner Status = AcpiTbLoadTable (TableIndex, ParentNode);
333e5e174adSSascha Wildner AcpiExEnterInterpreter ();
334e5e174adSSascha Wildner if (ACPI_FAILURE (Status))
335e5e174adSSascha Wildner {
336e5e174adSSascha Wildner return_ACPI_STATUS (Status);
337e5e174adSSascha Wildner }
338e5e174adSSascha Wildner
339e5e174adSSascha Wildner Status = AcpiExAddTable (TableIndex, &DdbHandle);
3400d02842fSSascha Wildner if (ACPI_FAILURE (Status))
3410d02842fSSascha Wildner {
3420d02842fSSascha Wildner return_ACPI_STATUS (Status);
3430d02842fSSascha Wildner }
3440d02842fSSascha Wildner
3457622fe52SSascha Wildner /* Complete the initialization/resolution of new objects */
3467bcb6cafSSascha Wildner
347e5412f1eSSascha Wildner AcpiExExitInterpreter();
3487622fe52SSascha Wildner AcpiNsInitializeObjects();
349e5412f1eSSascha Wildner AcpiExEnterInterpreter();
3507bcb6cafSSascha Wildner
3510d02842fSSascha Wildner /* Parameter Data (optional) */
3520d02842fSSascha Wildner
3530d02842fSSascha Wildner if (ParameterNode)
3540d02842fSSascha Wildner {
3550d02842fSSascha Wildner /* Store the parameter data into the optional parameter object */
3560d02842fSSascha Wildner
3570d02842fSSascha Wildner Status = AcpiExStore (Operand[5],
358820c5b08SSascha Wildner ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode), WalkState);
3590d02842fSSascha Wildner if (ACPI_FAILURE (Status))
3600d02842fSSascha Wildner {
3610d02842fSSascha Wildner (void) AcpiExUnloadTable (DdbHandle);
3620d02842fSSascha Wildner
3630d02842fSSascha Wildner AcpiUtRemoveReference (DdbHandle);
3640d02842fSSascha Wildner return_ACPI_STATUS (Status);
3650d02842fSSascha Wildner }
3660d02842fSSascha Wildner }
3670d02842fSSascha Wildner
3680d02842fSSascha Wildner *ReturnDesc = DdbHandle;
3690d02842fSSascha Wildner return_ACPI_STATUS (Status);
3700d02842fSSascha Wildner }
3710d02842fSSascha Wildner
3720d02842fSSascha Wildner
3730d02842fSSascha Wildner /*******************************************************************************
3740d02842fSSascha Wildner *
3750d02842fSSascha Wildner * FUNCTION: AcpiExRegionRead
3760d02842fSSascha Wildner *
3770d02842fSSascha Wildner * PARAMETERS: ObjDesc - Region descriptor
3780d02842fSSascha Wildner * Length - Number of bytes to read
3790d02842fSSascha Wildner * Buffer - Pointer to where to put the data
3800d02842fSSascha Wildner *
3810d02842fSSascha Wildner * RETURN: Status
3820d02842fSSascha Wildner *
3830d02842fSSascha Wildner * DESCRIPTION: Read data from an operation region. The read starts from the
3840d02842fSSascha Wildner * beginning of the region.
3850d02842fSSascha Wildner *
3860d02842fSSascha Wildner ******************************************************************************/
3870d02842fSSascha Wildner
3880d02842fSSascha Wildner static ACPI_STATUS
AcpiExRegionRead(ACPI_OPERAND_OBJECT * ObjDesc,UINT32 Length,UINT8 * Buffer)3890d02842fSSascha Wildner AcpiExRegionRead (
3900d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc,
3910d02842fSSascha Wildner UINT32 Length,
3920d02842fSSascha Wildner UINT8 *Buffer)
3930d02842fSSascha Wildner {
3940d02842fSSascha Wildner ACPI_STATUS Status;
3950d02842fSSascha Wildner UINT64 Value;
3960d02842fSSascha Wildner UINT32 RegionOffset = 0;
3970d02842fSSascha Wildner UINT32 i;
3980d02842fSSascha Wildner
3990d02842fSSascha Wildner
4000d02842fSSascha Wildner /* Bytewise reads */
4010d02842fSSascha Wildner
4020d02842fSSascha Wildner for (i = 0; i < Length; i++)
4030d02842fSSascha Wildner {
4040d02842fSSascha Wildner Status = AcpiEvAddressSpaceDispatch (ObjDesc, NULL, ACPI_READ,
4050d02842fSSascha Wildner RegionOffset, 8, &Value);
4060d02842fSSascha Wildner if (ACPI_FAILURE (Status))
4070d02842fSSascha Wildner {
4080d02842fSSascha Wildner return (Status);
4090d02842fSSascha Wildner }
4100d02842fSSascha Wildner
4110d02842fSSascha Wildner *Buffer = (UINT8) Value;
4120d02842fSSascha Wildner Buffer++;
4130d02842fSSascha Wildner RegionOffset++;
4140d02842fSSascha Wildner }
4150d02842fSSascha Wildner
4160d02842fSSascha Wildner return (AE_OK);
4170d02842fSSascha Wildner }
4180d02842fSSascha Wildner
4190d02842fSSascha Wildner
4200d02842fSSascha Wildner /*******************************************************************************
4210d02842fSSascha Wildner *
4220d02842fSSascha Wildner * FUNCTION: AcpiExLoadOp
4230d02842fSSascha Wildner *
4240d02842fSSascha Wildner * PARAMETERS: ObjDesc - Region or Buffer/Field where the table will be
4250d02842fSSascha Wildner * obtained
4260d02842fSSascha Wildner * Target - Where a handle to the table will be stored
4270d02842fSSascha Wildner * WalkState - Current state
4280d02842fSSascha Wildner *
4290d02842fSSascha Wildner * RETURN: Status
4300d02842fSSascha Wildner *
4310d02842fSSascha Wildner * DESCRIPTION: Load an ACPI table from a field or operation region
4320d02842fSSascha Wildner *
4330d02842fSSascha Wildner * NOTE: Region Fields (Field, BankField, IndexFields) are resolved to buffer
4340d02842fSSascha Wildner * objects before this code is reached.
4350d02842fSSascha Wildner *
4360d02842fSSascha Wildner * If source is an operation region, it must refer to SystemMemory, as
4370d02842fSSascha Wildner * per the ACPI specification.
4380d02842fSSascha Wildner *
4390d02842fSSascha Wildner ******************************************************************************/
4400d02842fSSascha Wildner
4410d02842fSSascha Wildner ACPI_STATUS
AcpiExLoadOp(ACPI_OPERAND_OBJECT * ObjDesc,ACPI_OPERAND_OBJECT * Target,ACPI_WALK_STATE * WalkState)4420d02842fSSascha Wildner AcpiExLoadOp (
4430d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc,
4440d02842fSSascha Wildner ACPI_OPERAND_OBJECT *Target,
4450d02842fSSascha Wildner ACPI_WALK_STATE *WalkState)
4460d02842fSSascha Wildner {
4470d02842fSSascha Wildner ACPI_OPERAND_OBJECT *DdbHandle;
448d4972a9cSSascha Wildner ACPI_TABLE_HEADER *TableHeader;
4490d02842fSSascha Wildner ACPI_TABLE_HEADER *Table;
4500d02842fSSascha Wildner UINT32 TableIndex;
4510d02842fSSascha Wildner ACPI_STATUS Status;
4520d02842fSSascha Wildner UINT32 Length;
4530d02842fSSascha Wildner
4540d02842fSSascha Wildner
4550d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExLoadOp);
4560d02842fSSascha Wildner
4570d02842fSSascha Wildner
4580d02842fSSascha Wildner /* Source Object can be either an OpRegion or a Buffer/Field */
4590d02842fSSascha Wildner
4600d02842fSSascha Wildner switch (ObjDesc->Common.Type)
4610d02842fSSascha Wildner {
4620d02842fSSascha Wildner case ACPI_TYPE_REGION:
4630d02842fSSascha Wildner
4640d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
4650d02842fSSascha Wildner "Load table from Region %p\n", ObjDesc));
4660d02842fSSascha Wildner
4670d02842fSSascha Wildner /* Region must be SystemMemory (from ACPI spec) */
4680d02842fSSascha Wildner
4690d02842fSSascha Wildner if (ObjDesc->Region.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY)
4700d02842fSSascha Wildner {
4710d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
4720d02842fSSascha Wildner }
4730d02842fSSascha Wildner
4740d02842fSSascha Wildner /*
475820c5b08SSascha Wildner * If the Region Address and Length have not been previously
476820c5b08SSascha Wildner * evaluated, evaluate them now and save the results.
4770d02842fSSascha Wildner */
4780d02842fSSascha Wildner if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
4790d02842fSSascha Wildner {
4800d02842fSSascha Wildner Status = AcpiDsGetRegionArguments (ObjDesc);
4810d02842fSSascha Wildner if (ACPI_FAILURE (Status))
4820d02842fSSascha Wildner {
4830d02842fSSascha Wildner return_ACPI_STATUS (Status);
4840d02842fSSascha Wildner }
4850d02842fSSascha Wildner }
4860d02842fSSascha Wildner
4870d02842fSSascha Wildner /* Get the table header first so we can get the table length */
4880d02842fSSascha Wildner
489d4972a9cSSascha Wildner TableHeader = ACPI_ALLOCATE (sizeof (ACPI_TABLE_HEADER));
490d4972a9cSSascha Wildner if (!TableHeader)
4910d02842fSSascha Wildner {
4920d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY);
4930d02842fSSascha Wildner }
4940d02842fSSascha Wildner
4950d02842fSSascha Wildner Status = AcpiExRegionRead (ObjDesc, sizeof (ACPI_TABLE_HEADER),
496d4972a9cSSascha Wildner ACPI_CAST_PTR (UINT8, TableHeader));
497d4972a9cSSascha Wildner Length = TableHeader->Length;
498d4972a9cSSascha Wildner ACPI_FREE (TableHeader);
4990d02842fSSascha Wildner
5000d02842fSSascha Wildner if (ACPI_FAILURE (Status))
5010d02842fSSascha Wildner {
5020d02842fSSascha Wildner return_ACPI_STATUS (Status);
5030d02842fSSascha Wildner }
5040d02842fSSascha Wildner
5050d02842fSSascha Wildner /* Must have at least an ACPI table header */
5060d02842fSSascha Wildner
5070d02842fSSascha Wildner if (Length < sizeof (ACPI_TABLE_HEADER))
5080d02842fSSascha Wildner {
5090d02842fSSascha Wildner return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
5100d02842fSSascha Wildner }
5110d02842fSSascha Wildner
5120d02842fSSascha Wildner /*
5130d02842fSSascha Wildner * The original implementation simply mapped the table, with no copy.
5140d02842fSSascha Wildner * However, the memory region is not guaranteed to remain stable and
5150d02842fSSascha Wildner * we must copy the table to a local buffer. For example, the memory
5160d02842fSSascha Wildner * region is corrupted after suspend on some machines. Dynamically
5170d02842fSSascha Wildner * loaded tables are usually small, so this overhead is minimal.
5180d02842fSSascha Wildner *
5190d02842fSSascha Wildner * The latest implementation (5/2009) does not use a mapping at all.
5200d02842fSSascha Wildner * We use the low-level operation region interface to read the table
5210d02842fSSascha Wildner * instead of the obvious optimization of using a direct mapping.
5220d02842fSSascha Wildner * This maintains a consistent use of operation regions across the
5230d02842fSSascha Wildner * entire subsystem. This is important if additional processing must
5240d02842fSSascha Wildner * be performed in the (possibly user-installed) operation region
5250d02842fSSascha Wildner * handler. For example, AcpiExec and ASLTS depend on this.
5260d02842fSSascha Wildner */
5270d02842fSSascha Wildner
5280d02842fSSascha Wildner /* Allocate a buffer for the table */
5290d02842fSSascha Wildner
530d4972a9cSSascha Wildner Table = ACPI_ALLOCATE (Length);
531d4972a9cSSascha Wildner if (!Table)
5320d02842fSSascha Wildner {
5330d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY);
5340d02842fSSascha Wildner }
5350d02842fSSascha Wildner
5360d02842fSSascha Wildner /* Read the entire table */
5370d02842fSSascha Wildner
5380d02842fSSascha Wildner Status = AcpiExRegionRead (ObjDesc, Length,
539d4972a9cSSascha Wildner ACPI_CAST_PTR (UINT8, Table));
5400d02842fSSascha Wildner if (ACPI_FAILURE (Status))
5410d02842fSSascha Wildner {
542d4972a9cSSascha Wildner ACPI_FREE (Table);
5430d02842fSSascha Wildner return_ACPI_STATUS (Status);
5440d02842fSSascha Wildner }
5450d02842fSSascha Wildner break;
5460d02842fSSascha Wildner
5470d02842fSSascha Wildner case ACPI_TYPE_BUFFER: /* Buffer or resolved RegionField */
5480d02842fSSascha Wildner
5490d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
5500d02842fSSascha Wildner "Load table from Buffer or Field %p\n", ObjDesc));
5510d02842fSSascha Wildner
5520d02842fSSascha Wildner /* Must have at least an ACPI table header */
5530d02842fSSascha Wildner
5540d02842fSSascha Wildner if (ObjDesc->Buffer.Length < sizeof (ACPI_TABLE_HEADER))
5550d02842fSSascha Wildner {
5560d02842fSSascha Wildner return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
5570d02842fSSascha Wildner }
5580d02842fSSascha Wildner
5590d02842fSSascha Wildner /* Get the actual table length from the table header */
5600d02842fSSascha Wildner
561820c5b08SSascha Wildner TableHeader = ACPI_CAST_PTR (
562820c5b08SSascha Wildner ACPI_TABLE_HEADER, ObjDesc->Buffer.Pointer);
563d4972a9cSSascha Wildner Length = TableHeader->Length;
5640d02842fSSascha Wildner
5650d02842fSSascha Wildner /* Table cannot extend beyond the buffer */
5660d02842fSSascha Wildner
5670d02842fSSascha Wildner if (Length > ObjDesc->Buffer.Length)
5680d02842fSSascha Wildner {
5690d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
5700d02842fSSascha Wildner }
5710d02842fSSascha Wildner if (Length < sizeof (ACPI_TABLE_HEADER))
5720d02842fSSascha Wildner {
5730d02842fSSascha Wildner return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
5740d02842fSSascha Wildner }
5750d02842fSSascha Wildner
5760d02842fSSascha Wildner /*
577820c5b08SSascha Wildner * Copy the table from the buffer because the buffer could be
578820c5b08SSascha Wildner * modified or even deleted in the future
5790d02842fSSascha Wildner */
580d4972a9cSSascha Wildner Table = ACPI_ALLOCATE (Length);
581d4972a9cSSascha Wildner if (!Table)
5820d02842fSSascha Wildner {
5830d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY);
5840d02842fSSascha Wildner }
5850d02842fSSascha Wildner
58625ca8c79SSascha Wildner memcpy (Table, TableHeader, Length);
5870d02842fSSascha Wildner break;
5880d02842fSSascha Wildner
5890d02842fSSascha Wildner default:
5900d02842fSSascha Wildner
5910d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
5920d02842fSSascha Wildner }
5930d02842fSSascha Wildner
5940d02842fSSascha Wildner /* Install the new table into the local data structures */
5950d02842fSSascha Wildner
5967c9678bcSSascha Wildner ACPI_INFO (("Dynamic OEM Table Load:"));
597e5e174adSSascha Wildner AcpiExExitInterpreter ();
598a96e04f2SSascha Wildner Status = AcpiTbInstallAndLoadTable (ACPI_PTR_TO_PHYSADDR (Table),
599*aab122a6SSascha Wildner ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, Table, TRUE, &TableIndex);
600e5e174adSSascha Wildner AcpiExEnterInterpreter ();
6010d02842fSSascha Wildner if (ACPI_FAILURE (Status))
6020d02842fSSascha Wildner {
6030d02842fSSascha Wildner /* Delete allocated table buffer */
6040d02842fSSascha Wildner
605d4972a9cSSascha Wildner ACPI_FREE (Table);
606d4972a9cSSascha Wildner return_ACPI_STATUS (Status);
607d4972a9cSSascha Wildner }
608d4972a9cSSascha Wildner
609d4972a9cSSascha Wildner /*
6100d02842fSSascha Wildner * Add the table to the namespace.
6110d02842fSSascha Wildner *
6120d02842fSSascha Wildner * Note: Load the table objects relative to the root of the namespace.
6130d02842fSSascha Wildner * This appears to go against the ACPI specification, but we do it for
6140d02842fSSascha Wildner * compatibility with other ACPI implementations.
6150d02842fSSascha Wildner */
616e5e174adSSascha Wildner Status = AcpiExAddTable (TableIndex, &DdbHandle);
6170d02842fSSascha Wildner if (ACPI_FAILURE (Status))
6180d02842fSSascha Wildner {
6190d02842fSSascha Wildner /* On error, TablePtr was deallocated above */
6200d02842fSSascha Wildner
6210d02842fSSascha Wildner return_ACPI_STATUS (Status);
6220d02842fSSascha Wildner }
6230d02842fSSascha Wildner
6247622fe52SSascha Wildner /* Complete the initialization/resolution of new objects */
6257bcb6cafSSascha Wildner
6267622fe52SSascha Wildner AcpiExExitInterpreter ();
6277622fe52SSascha Wildner AcpiNsInitializeObjects ();
6287622fe52SSascha Wildner AcpiExEnterInterpreter ();
6297bcb6cafSSascha Wildner
6300d02842fSSascha Wildner /* Store the DdbHandle into the Target operand */
6310d02842fSSascha Wildner
6320d02842fSSascha Wildner Status = AcpiExStore (DdbHandle, Target, WalkState);
6330d02842fSSascha Wildner if (ACPI_FAILURE (Status))
6340d02842fSSascha Wildner {
6350d02842fSSascha Wildner (void) AcpiExUnloadTable (DdbHandle);
6360d02842fSSascha Wildner
6370d02842fSSascha Wildner /* TablePtr was deallocated above */
6380d02842fSSascha Wildner
6390d02842fSSascha Wildner AcpiUtRemoveReference (DdbHandle);
6400d02842fSSascha Wildner return_ACPI_STATUS (Status);
6410d02842fSSascha Wildner }
6420d02842fSSascha Wildner
6430d02842fSSascha Wildner /* Remove the reference by added by AcpiExStore above */
6440d02842fSSascha Wildner
6450d02842fSSascha Wildner AcpiUtRemoveReference (DdbHandle);
6460d02842fSSascha Wildner return_ACPI_STATUS (Status);
6470d02842fSSascha Wildner }
6480d02842fSSascha Wildner
6490d02842fSSascha Wildner
6500d02842fSSascha Wildner /*******************************************************************************
6510d02842fSSascha Wildner *
6520d02842fSSascha Wildner * FUNCTION: AcpiExUnloadTable
6530d02842fSSascha Wildner *
6540d02842fSSascha Wildner * PARAMETERS: DdbHandle - Handle to a previously loaded table
6550d02842fSSascha Wildner *
6560d02842fSSascha Wildner * RETURN: Status
6570d02842fSSascha Wildner *
6580d02842fSSascha Wildner * DESCRIPTION: Unload an ACPI table
6590d02842fSSascha Wildner *
6600d02842fSSascha Wildner ******************************************************************************/
6610d02842fSSascha Wildner
6620d02842fSSascha Wildner ACPI_STATUS
AcpiExUnloadTable(ACPI_OPERAND_OBJECT * DdbHandle)6630d02842fSSascha Wildner AcpiExUnloadTable (
6640d02842fSSascha Wildner ACPI_OPERAND_OBJECT *DdbHandle)
6650d02842fSSascha Wildner {
6660d02842fSSascha Wildner ACPI_STATUS Status = AE_OK;
6670d02842fSSascha Wildner ACPI_OPERAND_OBJECT *TableDesc = DdbHandle;
6680d02842fSSascha Wildner UINT32 TableIndex;
6690d02842fSSascha Wildner
6700d02842fSSascha Wildner
6710d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExUnloadTable);
6720d02842fSSascha Wildner
6730d02842fSSascha Wildner
6740d02842fSSascha Wildner /*
675d4972a9cSSascha Wildner * Temporarily emit a warning so that the ASL for the machine can be
676d4972a9cSSascha Wildner * hopefully obtained. This is to say that the Unload() operator is
677d4972a9cSSascha Wildner * extremely rare if not completely unused.
678d4972a9cSSascha Wildner */
679d4972a9cSSascha Wildner ACPI_WARNING ((AE_INFO,
680d4972a9cSSascha Wildner "Received request to unload an ACPI table"));
681d4972a9cSSascha Wildner
682d4972a9cSSascha Wildner /*
683e416ee21SSascha Wildner * May 2018: Unload is no longer supported for the following reasons:
684e416ee21SSascha Wildner * 1) A correct implementation on some hosts may not be possible.
685e416ee21SSascha Wildner * 2) Other ACPI implementations do not correctly/fully support it.
686e416ee21SSascha Wildner * 3) It requires host device driver support which does not exist.
687e416ee21SSascha Wildner * (To properly support namespace unload out from underneath.)
688e416ee21SSascha Wildner * 4) This AML operator has never been seen in the field.
689e416ee21SSascha Wildner */
690e416ee21SSascha Wildner ACPI_EXCEPTION ((AE_INFO, AE_NOT_IMPLEMENTED,
691e416ee21SSascha Wildner "AML Unload operator is not supported"));
692e416ee21SSascha Wildner
693e416ee21SSascha Wildner /*
6940d02842fSSascha Wildner * Validate the handle
6950d02842fSSascha Wildner * Although the handle is partially validated in AcpiExReconfiguration()
6960d02842fSSascha Wildner * when it calls AcpiExResolveOperands(), the handle is more completely
6970d02842fSSascha Wildner * validated here.
6980d02842fSSascha Wildner *
6990d02842fSSascha Wildner * Handle must be a valid operand object of type reference. Also, the
7000d02842fSSascha Wildner * DdbHandle must still be marked valid (table has not been previously
7010d02842fSSascha Wildner * unloaded)
7020d02842fSSascha Wildner */
7030d02842fSSascha Wildner if ((!DdbHandle) ||
7040d02842fSSascha Wildner (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) ||
7050d02842fSSascha Wildner (DdbHandle->Common.Type != ACPI_TYPE_LOCAL_REFERENCE) ||
7060d02842fSSascha Wildner (!(DdbHandle->Common.Flags & AOPOBJ_DATA_VALID)))
7070d02842fSSascha Wildner {
7080d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
7090d02842fSSascha Wildner }
7100d02842fSSascha Wildner
7110d02842fSSascha Wildner /* Get the table index from the DdbHandle */
7120d02842fSSascha Wildner
7130d02842fSSascha Wildner TableIndex = TableDesc->Reference.Value;
7140d02842fSSascha Wildner
71596f24602SSascha Wildner /*
71696f24602SSascha Wildner * Release the interpreter lock so that the table lock won't have
71796f24602SSascha Wildner * strict order requirement against it.
71896f24602SSascha Wildner */
71996f24602SSascha Wildner AcpiExExitInterpreter ();
720a96e04f2SSascha Wildner Status = AcpiTbUnloadTable (TableIndex);
72196f24602SSascha Wildner AcpiExEnterInterpreter ();
72296f24602SSascha Wildner
7230d02842fSSascha Wildner /*
7240d02842fSSascha Wildner * Invalidate the handle. We do this because the handle may be stored
7250d02842fSSascha Wildner * in a named object and may not be actually deleted until much later.
7260d02842fSSascha Wildner */
72796f24602SSascha Wildner if (ACPI_SUCCESS (Status))
72896f24602SSascha Wildner {
7290d02842fSSascha Wildner DdbHandle->Common.Flags &= ~AOPOBJ_DATA_VALID;
73096f24602SSascha Wildner }
73196f24602SSascha Wildner return_ACPI_STATUS (Status);
7320d02842fSSascha Wildner }
733