| 0,0 → 1,758 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes) |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #define __EXCONFIG_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acinterp.h" |
| #include "acnamesp.h" |
| #include "actables.h" |
| #include "acdispat.h" |
| #include "acevents.h" |
| |
| |
| #define _COMPONENT ACPI_EXECUTER |
| ACPI_MODULE_NAME ("exconfig") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiExAddTable ( |
| UINT32 TableIndex, |
| ACPI_NAMESPACE_NODE *ParentNode, |
| ACPI_OPERAND_OBJECT **DdbHandle); |
| |
| static ACPI_STATUS |
| AcpiExRegionRead ( |
| ACPI_OPERAND_OBJECT *ObjDesc, |
| UINT32 Length, |
| UINT8 *Buffer); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExAddTable |
| * |
| * PARAMETERS: Table - Pointer to raw table |
| * ParentNode - Where to load the table (scope) |
| * DdbHandle - Where to return the table handle. |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Common function to Install and Load an ACPI table with a |
| * returned table handle. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiExAddTable ( |
| UINT32 TableIndex, |
| ACPI_NAMESPACE_NODE *ParentNode, |
| ACPI_OPERAND_OBJECT **DdbHandle) |
| { |
| ACPI_OPERAND_OBJECT *ObjDesc; |
| ACPI_STATUS Status; |
| ACPI_OWNER_ID OwnerId; |
| |
| |
| ACPI_FUNCTION_TRACE (ExAddTable); |
| |
| |
| /* Create an object to be the table handle */ |
| |
| ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); |
| if (!ObjDesc) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* Init the table handle */ |
| |
| ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID; |
| ObjDesc->Reference.Class = ACPI_REFCLASS_TABLE; |
| *DdbHandle = ObjDesc; |
| |
| /* Install the new table into the local data structures */ |
| |
| ObjDesc->Reference.Value = TableIndex; |
| |
| /* Add the table to the namespace */ |
| |
| Status = AcpiNsLoadTable (TableIndex, ParentNode); |
| if (ACPI_FAILURE (Status)) |
| { |
| AcpiUtRemoveReference (ObjDesc); |
| *DdbHandle = NULL; |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Execute any module-level code that was found in the table */ |
| |
| AcpiExExitInterpreter (); |
| AcpiNsExecModuleCodeList (); |
| AcpiExEnterInterpreter (); |
| |
| /* Update GPEs for any new _PRW or _Lxx/_Exx methods. Ignore errors */ |
| |
| Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); |
| if (ACPI_SUCCESS (Status)) |
| { |
| AcpiEvUpdateGpes (OwnerId); |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExLoadTableOp |
| * |
| * PARAMETERS: WalkState - Current state with operands |
| * ReturnDesc - Where to store the return object |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Load an ACPI table from the RSDT/XSDT |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExLoadTableOp ( |
| ACPI_WALK_STATE *WalkState, |
| ACPI_OPERAND_OBJECT **ReturnDesc) |
| { |
| ACPI_STATUS Status; |
| ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| ACPI_NAMESPACE_NODE *ParentNode; |
| ACPI_NAMESPACE_NODE *StartNode; |
| ACPI_NAMESPACE_NODE *ParameterNode = NULL; |
| ACPI_OPERAND_OBJECT *DdbHandle; |
| ACPI_TABLE_HEADER *Table; |
| UINT32 TableIndex; |
| |
| |
| ACPI_FUNCTION_TRACE (ExLoadTableOp); |
| |
| |
| /* Validate lengths for the SignatureString, OEMIDString, OEMTableID */ |
| |
| if ((Operand[0]->String.Length > ACPI_NAME_SIZE) || |
| (Operand[1]->String.Length > ACPI_OEM_ID_SIZE) || |
| (Operand[2]->String.Length > ACPI_OEM_TABLE_ID_SIZE)) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Find the ACPI table in the RSDT/XSDT */ |
| |
| Status = AcpiTbFindTable (Operand[0]->String.Pointer, |
| Operand[1]->String.Pointer, |
| Operand[2]->String.Pointer, &TableIndex); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status != AE_NOT_FOUND) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Table not found, return an Integer=0 and AE_OK */ |
| |
| 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); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExRegionRead |
| * |
| * PARAMETERS: ObjDesc - Region descriptor |
| * Length - Number of bytes to read |
| * Buffer - Pointer to where to put the data |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Read data from an operation region. The read starts from the |
| * beginning of the region. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiExRegionRead ( |
| ACPI_OPERAND_OBJECT *ObjDesc, |
| UINT32 Length, |
| UINT8 *Buffer) |
| { |
| ACPI_STATUS Status; |
| UINT64 Value; |
| UINT32 RegionOffset = 0; |
| UINT32 i; |
| |
| |
| /* Bytewise reads */ |
| |
| for (i = 0; i < Length; i++) |
| { |
| Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ, |
| RegionOffset, 8, &Value); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| *Buffer = (UINT8) Value; |
| Buffer++; |
| RegionOffset++; |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExLoadOp |
| * |
| * PARAMETERS: ObjDesc - Region or Buffer/Field where the table will be |
| * obtained |
| * Target - Where a handle to the table will be stored |
| * WalkState - Current state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Load an ACPI table from a field or operation region |
| * |
| * NOTE: Region Fields (Field, BankField, IndexFields) are resolved to buffer |
| * objects before this code is reached. |
| * |
| * If source is an operation region, it must refer to SystemMemory, as |
| * per the ACPI specification. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExLoadOp ( |
| ACPI_OPERAND_OBJECT *ObjDesc, |
| ACPI_OPERAND_OBJECT *Target, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_OPERAND_OBJECT *DdbHandle; |
| ACPI_TABLE_HEADER *Table; |
| ACPI_TABLE_DESC TableDesc; |
| UINT32 TableIndex; |
| ACPI_STATUS Status; |
| UINT32 Length; |
| |
| |
| ACPI_FUNCTION_TRACE (ExLoadOp); |
| |
| |
| ACPI_MEMSET (&TableDesc, 0, sizeof (ACPI_TABLE_DESC)); |
| |
| /* Source Object can be either an OpRegion or a Buffer/Field */ |
| |
| switch (ObjDesc->Common.Type) |
| { |
| case ACPI_TYPE_REGION: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| "Load table from Region %p\n", ObjDesc)); |
| |
| /* Region must be SystemMemory (from ACPI spec) */ |
| |
| if (ObjDesc->Region.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| { |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| /* |
| * If the Region Address and Length have not been previously evaluated, |
| * evaluate them now and save the results. |
| */ |
| if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)) |
| { |
| Status = AcpiDsGetRegionArguments (ObjDesc); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| /* Get the table header first so we can get the table length */ |
| |
| Table = ACPI_ALLOCATE (sizeof (ACPI_TABLE_HEADER)); |
| if (!Table) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| Status = AcpiExRegionRead (ObjDesc, sizeof (ACPI_TABLE_HEADER), |
| ACPI_CAST_PTR (UINT8, Table)); |
| Length = Table->Length; |
| ACPI_FREE (Table); |
| |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Must have at least an ACPI table header */ |
| |
| if (Length < sizeof (ACPI_TABLE_HEADER)) |
| { |
| return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); |
| } |
| |
| /* |
| * The original implementation simply mapped the table, with no copy. |
| * However, the memory region is not guaranteed to remain stable and |
| * we must copy the table to a local buffer. For example, the memory |
| * region is corrupted after suspend on some machines. Dynamically |
| * loaded tables are usually small, so this overhead is minimal. |
| * |
| * The latest implementation (5/2009) does not use a mapping at all. |
| * We use the low-level operation region interface to read the table |
| * instead of the obvious optimization of using a direct mapping. |
| * This maintains a consistent use of operation regions across the |
| * entire subsystem. This is important if additional processing must |
| * be performed in the (possibly user-installed) operation region |
| * handler. For example, AcpiExec and ASLTS depend on this. |
| */ |
| |
| /* Allocate a buffer for the table */ |
| |
| TableDesc.Pointer = ACPI_ALLOCATE (Length); |
| if (!TableDesc.Pointer) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* Read the entire table */ |
| |
| Status = AcpiExRegionRead (ObjDesc, Length, |
| ACPI_CAST_PTR (UINT8, TableDesc.Pointer)); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_FREE (TableDesc.Pointer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| TableDesc.Address = ObjDesc->Region.Address; |
| break; |
| |
| |
| case ACPI_TYPE_BUFFER: /* Buffer or resolved RegionField */ |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| "Load table from Buffer or Field %p\n", ObjDesc)); |
| |
| /* Must have at least an ACPI table header */ |
| |
| if (ObjDesc->Buffer.Length < sizeof (ACPI_TABLE_HEADER)) |
| { |
| return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); |
| } |
| |
| /* Get the actual table length from the table header */ |
| |
| Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER, ObjDesc->Buffer.Pointer); |
| Length = Table->Length; |
| |
| /* Table cannot extend beyond the buffer */ |
| |
| if (Length > ObjDesc->Buffer.Length) |
| { |
| return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); |
| } |
| if (Length < sizeof (ACPI_TABLE_HEADER)) |
| { |
| return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); |
| } |
| |
| /* |
| * Copy the table from the buffer because the buffer could be modified |
| * or even deleted in the future |
| */ |
| TableDesc.Pointer = ACPI_ALLOCATE (Length); |
| if (!TableDesc.Pointer) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| ACPI_MEMCPY (TableDesc.Pointer, Table, Length); |
| TableDesc.Address = ACPI_TO_INTEGER (TableDesc.Pointer); |
| break; |
| |
| |
| default: |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| /* Validate table checksum (will not get validated in TbAddTable) */ |
| |
| Status = AcpiTbVerifyChecksum (TableDesc.Pointer, Length); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_FREE (TableDesc.Pointer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Complete the table descriptor */ |
| |
| TableDesc.Length = Length; |
| TableDesc.Flags = ACPI_TABLE_ORIGIN_ALLOCATED; |
| |
| /* Install the new table into the local data structures */ |
| |
| Status = AcpiTbAddTable (&TableDesc, &TableIndex); |
| if (ACPI_FAILURE (Status)) |
| { |
| /* Delete allocated table buffer */ |
| |
| AcpiTbDeleteTable (&TableDesc); |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * Add the table to the namespace. |
| * |
| * Note: Load the table objects relative to the root of the namespace. |
| * This appears to go against the ACPI specification, but we do it for |
| * compatibility with other ACPI implementations. |
| */ |
| Status = AcpiExAddTable (TableIndex, AcpiGbl_RootNode, &DdbHandle); |
| if (ACPI_FAILURE (Status)) |
| { |
| /* On error, TablePtr was deallocated above */ |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Store the DdbHandle into the Target operand */ |
| |
| Status = AcpiExStore (DdbHandle, Target, WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| (void) AcpiExUnloadTable (DdbHandle); |
| |
| /* TablePtr was deallocated above */ |
| |
| AcpiUtRemoveReference (DdbHandle); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_INFO ((AE_INFO, "Dynamic OEM Table Load:")); |
| AcpiTbPrintTableHeader (0, TableDesc.Pointer); |
| |
| /* Remove the reference by added by AcpiExStore above */ |
| |
| AcpiUtRemoveReference (DdbHandle); |
| |
| /* Invoke table handler if present */ |
| |
| if (AcpiGbl_TableHandler) |
| { |
| (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, TableDesc.Pointer, |
| AcpiGbl_TableHandlerContext); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExUnloadTable |
| * |
| * PARAMETERS: DdbHandle - Handle to a previously loaded table |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Unload an ACPI table |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExUnloadTable ( |
| ACPI_OPERAND_OBJECT *DdbHandle) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_OPERAND_OBJECT *TableDesc = DdbHandle; |
| UINT32 TableIndex; |
| ACPI_TABLE_HEADER *Table; |
| |
| |
| ACPI_FUNCTION_TRACE (ExUnloadTable); |
| |
| |
| /* |
| * Validate the handle |
| * Although the handle is partially validated in AcpiExReconfiguration() |
| * when it calls AcpiExResolveOperands(), the handle is more completely |
| * validated here. |
| * |
| * Handle must be a valid operand object of type reference. Also, the |
| * DdbHandle must still be marked valid (table has not been previously |
| * unloaded) |
| */ |
| if ((!DdbHandle) || |
| (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) || |
| (DdbHandle->Common.Type != ACPI_TYPE_LOCAL_REFERENCE) || |
| (!(DdbHandle->Common.Flags & AOPOBJ_DATA_VALID))) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Get the table index from the DdbHandle */ |
| |
| TableIndex = TableDesc->Reference.Value; |
| |
| /* Ensure the table is still loaded */ |
| |
| if (!AcpiTbIsTableLoaded (TableIndex)) |
| { |
| return_ACPI_STATUS (AE_NOT_EXIST); |
| } |
| |
| /* Invoke table handler if present */ |
| |
| if (AcpiGbl_TableHandler) |
| { |
| Status = AcpiGetTableByIndex (TableIndex, &Table); |
| if (ACPI_SUCCESS (Status)) |
| { |
| (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_UNLOAD, Table, |
| AcpiGbl_TableHandlerContext); |
| } |
| } |
| |
| /* Delete the portion of the namespace owned by this table */ |
| |
| Status = AcpiTbDeleteNamespaceByOwner (TableIndex); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| (void) AcpiTbReleaseOwnerId (TableIndex); |
| AcpiTbSetTableLoadedFlag (TableIndex, FALSE); |
| |
| /* |
| * Invalidate the handle. We do this because the handle may be stored |
| * in a named object and may not be actually deleted until much later. |
| */ |
| DdbHandle->Common.Flags &= ~AOPOBJ_DATA_VALID; |
| return_ACPI_STATUS (AE_OK); |
| } |
| |