400 lines
13 KiB
C
400 lines
13 KiB
C
/******************************************************************************
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*
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* Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes)
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* $Revision: 42 $
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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, 2000, 2001, 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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MODULE_NAME ("exconfig")
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/*****************************************************************************
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*
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* FUNCTION: AcpiExLoadTableOp
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*
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* PARAMETERS: RgnDesc - Op region where the table will be obtained
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* DdbHandle - Where a handle to the table will be returned
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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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static ACPI_STATUS
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AcpiExLoadTableOp (
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ACPI_OPERAND_OBJECT *RgnDesc,
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ACPI_OPERAND_OBJECT **DdbHandle)
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{
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ACPI_STATUS Status;
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ACPI_OPERAND_OBJECT *TableDesc = NULL;
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UINT8 *TablePtr;
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UINT8 *TableDataPtr;
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ACPI_TABLE_HEADER TableHeader;
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ACPI_TABLE_DESC TableInfo;
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UINT32 i;
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FUNCTION_TRACE ("ExLoadTable");
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/* TBD: [Unhandled] Object can be either a field or an opregion */
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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 (RgnDesc, ACPI_READ_ADR_SPACE,
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(ACPI_PHYSICAL_ADDRESS) i, 8,
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(UINT32 *) ((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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MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
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TableDataPtr = 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 (RgnDesc, ACPI_READ_ADR_SPACE,
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(ACPI_PHYSICAL_ADDRESS) i, 8,
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(UINT32 *) (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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/* Table must be either an SSDT or a PSDT */
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if ((!STRNCMP (TableHeader.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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(!STRNCMP (TableHeader.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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TableHeader.Signature));
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Status = AE_BAD_SIGNATURE;
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goto Cleanup;
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}
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/* Create an object to be the table handle */
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TableDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REFERENCE);
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if (!TableDesc)
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{
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Status = AE_NO_MEMORY;
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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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TableInfo.Pointer = (ACPI_TABLE_HEADER *) TablePtr;
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TableInfo.Length = TableHeader.Length;
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TableInfo.Allocation = ACPI_MEM_ALLOCATED;
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TableInfo.BasePointer = TablePtr;
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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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/* TBD: [Restructure] - change to whatever new interface is appropriate */
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/*
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Status = AcpiLoadNamespace ();
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if (ACPI_FAILURE (Status))
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{
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*/
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/* TBD: [Errors] Unload the table on failure ? */
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/*
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goto Cleanup;
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}
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*/
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/* TBD: [Investigate] we need a pointer to the table desc */
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/* Init the table handle */
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TableDesc->Reference.Opcode = AML_LOAD_OP;
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TableDesc->Reference.Object = TableInfo.InstalledDesc;
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*DdbHandle = TableDesc;
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return_ACPI_STATUS (Status);
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Cleanup:
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ACPI_MEM_FREE (TableDesc);
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ACPI_MEM_FREE (TablePtr);
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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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static 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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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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(!VALID_DESCRIPTOR_TYPE (DdbHandle, ACPI_DESC_TYPE_INTERNAL)) ||
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(((ACPI_OPERAND_OBJECT *)DdbHandle)->Common.Type !=
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INTERNAL_TYPE_REFERENCE))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Get the actual table descriptor from the DdbHandle */
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TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object;
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/*
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* Delete the entire namespace under this table Node
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* (Offset contains the TableId)
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*/
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Status = AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
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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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/* Delete the table itself */
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AcpiTbUninstallTable (TableInfo->InstalledDesc);
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/* Delete the table descriptor (DdbHandle) */
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AcpiUtRemoveReference (TableDesc);
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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: AcpiExReconfiguration
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*
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* PARAMETERS: WalkState - Current state of the parse tree walk
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*
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* RETURN: Status
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*
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* DESCRIPTION: Reconfiguration opcodes such as LOAD and UNLOAD
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*
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****************************************************************************/
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ACPI_STATUS
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AcpiExReconfiguration (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
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ACPI_STATUS Status;
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FUNCTION_TRACE ("ExReconfiguration");
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#define DdbHandle Operand[0]
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#define RegionDesc Operand[1]
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switch (WalkState->Opcode)
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{
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case AML_LOAD_OP:
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Status = AcpiExLoadTableOp (RegionDesc, &DdbHandle);
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break;
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case AML_UNLOAD_OP:
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Status = AcpiExUnloadTable (DdbHandle);
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "bad opcode=%X\n", WalkState->Opcode));
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Status = AE_AML_BAD_OPCODE;
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break;
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}
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return_ACPI_STATUS (Status);
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}
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