571 lines
18 KiB
C
571 lines
18 KiB
C
/******************************************************************************
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*
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* Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes)
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* $Revision: 59 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __EXCONFIG_C__
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#include "acpi.h"
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#include "acparser.h"
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#include "acinterp.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#include "actables.h"
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#include "acdispat.h"
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exconfig")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExAddTable
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*
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* PARAMETERS: Table - Pointer to raw table
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* ParentNode - Where to load the table (scope)
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* DdbHandle - Where to return the table handle.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Common function to Install and Load an ACPI table with a
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* returned table handle.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExAddTable (
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ACPI_TABLE_HEADER *Table,
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ACPI_NAMESPACE_NODE *ParentNode,
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ACPI_OPERAND_OBJECT **DdbHandle)
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{
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ACPI_STATUS Status;
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ACPI_TABLE_DESC TableInfo;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_FUNCTION_TRACE ("ExAddTable");
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/* Create an object to be the table handle */
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ObjDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REFERENCE);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Install the new table into the local data structures */
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TableInfo.Pointer = Table;
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TableInfo.Length = Table->Length;
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TableInfo.Allocation = ACPI_MEM_ALLOCATED;
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TableInfo.BasePointer = Table;
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Status = AcpiTbInstallTable (NULL, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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/* Add the table to the namespace */
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Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode);
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if (ACPI_FAILURE (Status))
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{
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/* Uninstall table on error */
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AcpiTbUninstallTable (TableInfo.InstalledDesc);
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goto Cleanup;
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}
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/* Init the table handle */
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ObjDesc->Reference.Opcode = AML_LOAD_OP;
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ObjDesc->Reference.Object = TableInfo.InstalledDesc;
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*DdbHandle = ObjDesc;
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return_ACPI_STATUS (AE_OK);
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Cleanup:
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AcpiUtRemoveReference (ObjDesc);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExLoadTableOp
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*
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* PARAMETERS: WalkState - Current state with operands
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* ReturnDesc - Where to store the return object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load an ACPI table
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExLoadTableOp (
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ACPI_WALK_STATE *WalkState,
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ACPI_OPERAND_OBJECT **ReturnDesc)
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{
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ACPI_STATUS Status;
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ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
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ACPI_TABLE_HEADER *Table;
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ACPI_NAMESPACE_NODE *ParentNode;
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ACPI_NAMESPACE_NODE *StartNode;
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ACPI_NAMESPACE_NODE *ParameterNode = NULL;
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ACPI_OPERAND_OBJECT *DdbHandle;
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ACPI_FUNCTION_TRACE ("ExLoadTableOp");
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/*
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* Make sure that the signature does not match one of the tables that
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* is already loaded.
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*/
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Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL);
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if (Status == AE_OK)
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{
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/* Signature matched -- don't allow override */
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return_ACPI_STATUS (AE_ALREADY_EXISTS);
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}
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/* Find the ACPI table */
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Status = AcpiTbFindTable (Operand[0]->String.Pointer,
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Operand[1]->String.Pointer,
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Operand[2]->String.Pointer, &Table);
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if (ACPI_FAILURE (Status))
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{
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if (Status != AE_NOT_FOUND)
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{
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return_ACPI_STATUS (Status);
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}
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/* Not found, return an Integer=0 and AE_OK */
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DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!DdbHandle)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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DdbHandle->Integer.Value = 0;
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*ReturnDesc = DdbHandle;
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return_ACPI_STATUS (AE_OK);
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}
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/* Default nodes */
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StartNode = WalkState->ScopeInfo->Scope.Node;
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ParentNode = AcpiGbl_RootNode;
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/* RootPath (optional parameter) */
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if (Operand[3]->String.Length > 0)
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{
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/*
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* Find the node referenced by the RootPathString. This is the
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* location within the namespace where the table will be loaded.
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*/
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Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode,
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ACPI_NS_SEARCH_PARENT, &ParentNode);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/* ParameterPath (optional parameter) */
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if (Operand[4]->String.Length > 0)
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{
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if ((Operand[4]->String.Pointer[0] != '\\') &&
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(Operand[4]->String.Pointer[0] != '^'))
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{
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/*
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* Path is not absolute, so it will be relative to the node
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* referenced by the RootPathString (or the NS root if omitted)
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*/
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StartNode = ParentNode;
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}
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/*
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* Find the node referenced by the ParameterPathString
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*/
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Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode,
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ACPI_NS_SEARCH_PARENT, &ParameterNode);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/* Load the table into the namespace */
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Status = AcpiExAddTable (Table, ParentNode, &DdbHandle);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Parameter Data (optional) */
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if (ParameterNode)
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{
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/* Store the parameter data into the optional parameter object */
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Status = AcpiExStore (Operand[5], (ACPI_OPERAND_OBJECT *) ParameterNode,
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WalkState);
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if (ACPI_FAILURE (Status))
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{
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AcpiExUnloadTable (DdbHandle);
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}
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}
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExLoadOp
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*
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* PARAMETERS: ObjDesc - Region or Field where the table will be
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* obtained
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* Target - Where a handle to the table will be stored
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* WalkState - Current state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load an ACPI table from a field or operation region
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExLoadOp (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT *Target,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status;
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ACPI_OPERAND_OBJECT *DdbHandle;
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ACPI_OPERAND_OBJECT *BufferDesc = NULL;
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ACPI_TABLE_HEADER *TablePtr = NULL;
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UINT8 *TableDataPtr;
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ACPI_TABLE_HEADER TableHeader;
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UINT32 i;
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ACPI_FUNCTION_TRACE ("ExLoadOp");
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/* Object can be either an OpRegion or a Field */
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switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
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{
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case ACPI_TYPE_REGION:
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n",
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ObjDesc, AcpiUtGetTypeName (ObjDesc->Common.Type)));
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/* Get the table header */
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TableHeader.Length = 0;
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for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++)
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{
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Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
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(ACPI_PHYSICAL_ADDRESS) i, 8,
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(ACPI_INTEGER *) ((UINT8 *) &TableHeader + i));
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/* Allocate a buffer for the entire table */
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TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length);
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if (!TablePtr)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the header to the buffer */
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ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
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TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER));
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/* Get the table from the op region */
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for (i = 0; i < TableHeader.Length; i++)
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{
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Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
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(ACPI_PHYSICAL_ADDRESS) i, 8,
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(ACPI_INTEGER *) (TableDataPtr + i));
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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}
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break;
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case ACPI_TYPE_BUFFER_FIELD:
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case INTERNAL_TYPE_REGION_FIELD:
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case INTERNAL_TYPE_BANK_FIELD:
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case INTERNAL_TYPE_INDEX_FIELD:
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n",
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ObjDesc, AcpiUtGetTypeName (ObjDesc->Common.Type)));
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/*
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* The length of the field must be at least as large as the table.
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* Read the entire field and thus the entire table. Buffer is
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* allocated during the read.
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*/
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Status = AcpiExReadDataFromField (ObjDesc, &BufferDesc);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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TablePtr = (ACPI_TABLE_HEADER *) BufferDesc->Buffer.Pointer;
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break;
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default:
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* The table must be either an SSDT or a PSDT */
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if ((!ACPI_STRNCMP (TablePtr->Signature,
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AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].Signature,
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AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].SigLength)) &&
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(!ACPI_STRNCMP (TablePtr->Signature,
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AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].Signature,
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AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].SigLength)))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
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(char *) &TablePtr->Signature));
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Status = AE_BAD_SIGNATURE;
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goto Cleanup;
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}
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/* Install the new table into the local data structures */
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Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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/* Store the DdbHandle into the Target operand */
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Status = AcpiExStore (DdbHandle, Target, WalkState);
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if (ACPI_FAILURE (Status))
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{
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AcpiExUnloadTable (DdbHandle);
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}
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return_ACPI_STATUS (Status);
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Cleanup:
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if (BufferDesc)
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{
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AcpiUtRemoveReference (BufferDesc);
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}
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else
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{
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ACPI_MEM_FREE (TablePtr);
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}
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExUnloadTable
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*
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* PARAMETERS: DdbHandle - Handle to a previously loaded table
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*
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* RETURN: Status
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*
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* DESCRIPTION: Unload an ACPI table
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExUnloadTable (
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ACPI_OPERAND_OBJECT *DdbHandle)
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{
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ACPI_STATUS Status = AE_NOT_IMPLEMENTED;
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ACPI_OPERAND_OBJECT *TableDesc = DdbHandle;
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ACPI_TABLE_DESC *TableInfo;
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ACPI_FUNCTION_TRACE ("ExUnloadTable");
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/*
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* Validate the handle
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* Although the handle is partially validated in AcpiExReconfiguration(),
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* when it calls AcpiExResolveOperands(), the handle is more completely
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* validated here.
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*/
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if ((!DdbHandle) ||
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(ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_INTERNAL) ||
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(((ACPI_OPERAND_OBJECT *)DdbHandle)->Common.Type !=
|
|
INTERNAL_TYPE_REFERENCE))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the actual table descriptor from the DdbHandle */
|
|
|
|
TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object;
|
|
|
|
/*
|
|
* Delete the entire namespace under this table Node
|
|
* (Offset contains the TableId)
|
|
*/
|
|
Status = AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Delete the table itself */
|
|
|
|
AcpiTbUninstallTable (TableInfo->InstalledDesc);
|
|
|
|
/* Delete the table descriptor (DdbHandle) */
|
|
|
|
AcpiUtRemoveReference (TableDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|