0065eb1222
keeps changing, so to reduce repository thrash everything has been moved into a single directory. (repo copy involved)
559 lines
18 KiB
C
559 lines
18 KiB
C
/******************************************************************************
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*
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* Module Name: tbxface - Public interfaces to the ACPI subsystem
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* ACPI table oriented interfaces
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* $Revision: 38 $
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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 __TBXFACE_C__
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#include "acpi.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#include "actables.h"
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#define _COMPONENT ACPI_TABLES
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MODULE_NAME ("tbxface")
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/*******************************************************************************
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*
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* FUNCTION: AcpiLoadTables
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to load the ACPI tables from the
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* provided RSDT
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiLoadTables (
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ACPI_PHYSICAL_ADDRESS RsdpPhysicalAddress)
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{
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ACPI_STATUS Status;
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UINT32 NumberOfTables = 0;
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FUNCTION_TRACE ("AcpiLoadTables");
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/* Ensure that ACPI has been initialized */
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ACPI_IS_INITIALIZATION_COMPLETE (Status);
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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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/* Map and validate the RSDP */
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Status = AcpiTbVerifyRsdp (RsdpPhysicalAddress);
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("AcpiLoadTables: RSDP Failed validation: %s\n",
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AcpiUtFormatException (Status)));
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goto ErrorExit;
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}
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/* Get the RSDT via the RSDP */
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Status = AcpiTbGetTableRsdt (&NumberOfTables);
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("AcpiLoadTables: Could not load RSDT: %s\n",
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AcpiUtFormatException (Status)));
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goto ErrorExit;
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}
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/* Now get the rest of the tables */
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Status = AcpiTbGetAllTables (NumberOfTables, NULL);
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("AcpiLoadTables: Error getting required tables (DSDT/FADT/FACS): %s\n",
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AcpiUtFormatException (Status)));
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goto ErrorExit;
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}
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DEBUG_PRINTP (ACPI_OK, ("ACPI Tables successfully loaded\n"));
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/* Load the namespace from the tables */
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Status = AcpiNsLoadNamespace ();
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("AcpiLoadTables: Could not load namespace: %s\n",
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AcpiUtFormatException (Status)));
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goto ErrorExit;
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}
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return_ACPI_STATUS (AE_OK);
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ErrorExit:
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REPORT_ERROR (("AcpiLoadTables: Could not load tables: %s\n",
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AcpiUtFormatException (Status)));
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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: AcpiLoadTable
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*
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* PARAMETERS: TablePtr - pointer to a buffer containing the entire
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* table to be loaded
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to load a table from the caller's
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* buffer. The buffer must contain an entire ACPI Table including
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* a valid header. The header fields will be verified, and if it
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* is determined that the table is invalid, the call will fail.
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*
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* If the call fails an appropriate status will be returned.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiLoadTable (
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ACPI_TABLE_HEADER *TablePtr)
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{
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ACPI_STATUS Status;
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ACPI_TABLE_DESC TableInfo;
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FUNCTION_TRACE ("AcpiLoadTable");
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/* Ensure that ACPI has been initialized */
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ACPI_IS_INITIALIZATION_COMPLETE (Status);
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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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if (!TablePtr)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Copy the table to a local buffer */
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Status = AcpiTbGetTable (0, TablePtr, &TableInfo);
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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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/* Install the new table into the local data structures */
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Status = AcpiTbInstallTable (NULL, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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/* Free table allocated by AcpiTbGetTable */
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AcpiTbDeleteSingleTable (&TableInfo);
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return_ACPI_STATUS (Status);
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}
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Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
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if (ACPI_FAILURE (Status))
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{
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/* Uninstall table and free the buffer */
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AcpiTbUninstallTable (TableInfo.InstalledDesc);
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return_ACPI_STATUS (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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*
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* FUNCTION: AcpiUnloadTable
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*
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* PARAMETERS: TableType - Type of table to be unloaded
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*
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* RETURN: Status
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*
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* DESCRIPTION: This routine is used to force the unload of a table
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUnloadTable (
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ACPI_TABLE_TYPE TableType)
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{
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ACPI_TABLE_DESC *ListHead;
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ACPI_STATUS Status;
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FUNCTION_TRACE ("AcpiUnloadTable");
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/* Ensure that ACPI has been initialized */
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ACPI_IS_INITIALIZATION_COMPLETE (Status);
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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 validation */
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if (TableType > ACPI_TABLE_MAX)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Find all tables of the requested type */
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ListHead = &AcpiGbl_AcpiTables[TableType];
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do
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{
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/*
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* Delete all namespace entries owned by this table. Note that these
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* entries can appear anywhere in the namespace by virtue of the AML
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* "Scope" operator. Thus, we need to track ownership by an ID, not
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* simply a position within the hierarchy
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*/
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AcpiNsDeleteNamespaceByOwner (ListHead->TableId);
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/* Delete (or unmap) the actual table */
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AcpiTbDeleteAcpiTable (TableType);
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} while (ListHead != &AcpiGbl_AcpiTables[TableType]);
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetTableHeader
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*
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* PARAMETERS: TableType - one of the defined table types
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* Instance - the non zero instance of the table, allows
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* support for multiple tables of the same type
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* see AcpiGbl_AcpiTableFlag
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* OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful
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*
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* DESCRIPTION: This function is called to get an ACPI table header. The caller
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* supplies an pointer to a data area sufficient to contain an ACPI
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* ACPI_TABLE_HEADER structure.
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*
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* The header contains a length field that can be used to determine
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* the size of the buffer needed to contain the entire table. This
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* function is not valid for the RSD PTR table since it does not
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* have a standard header and is fixed length.
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*
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* If the operation fails for any reason an appropriate status will
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* be returned and the contents of OutTableHeader are undefined.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetTableHeader (
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ACPI_TABLE_TYPE TableType,
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UINT32 Instance,
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ACPI_TABLE_HEADER *OutTableHeader)
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{
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ACPI_TABLE_HEADER *TblPtr;
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ACPI_STATUS Status;
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FUNCTION_TRACE ("AcpiGetTableHeader");
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/* Ensure that ACPI has been initialized */
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ACPI_IS_INITIALIZATION_COMPLETE (Status);
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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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if ((Instance == 0) ||
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(TableType == ACPI_TABLE_RSDP) ||
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(!OutTableHeader))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Check the table type and instance */
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if ((TableType > ACPI_TABLE_MAX) ||
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(IS_SINGLE_TABLE (AcpiGbl_AcpiTableData[TableType].Flags) &&
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Instance > 1))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Get a pointer to the entire table */
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Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
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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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* The function will return a NULL pointer if the table is not loaded
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*/
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if (TblPtr == NULL)
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{
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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/*
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* Copy the header to the caller's buffer
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*/
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MEMCPY ((void *) OutTableHeader, (void *) TblPtr,
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sizeof (ACPI_TABLE_HEADER));
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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: AcpiGetTable
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*
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* PARAMETERS: TableType - one of the defined table types
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* Instance - the non zero instance of the table, allows
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* support for multiple tables of the same type
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* see AcpiGbl_AcpiTableFlag
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* RetBuffer - pointer to a structure containing a buffer to
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* receive the table
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get an ACPI table. The caller
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* supplies an OutBuffer large enough to contain the entire ACPI
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* table. The caller should call the AcpiGetTableHeader function
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* first to determine the buffer size needed. Upon completion
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* the OutBuffer->Length field will indicate the number of bytes
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* copied into the OutBuffer->BufPtr buffer. This table will be
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* a complete table including the header.
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*
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* If the operation fails an appropriate status will be returned
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* and the contents of OutBuffer are undefined.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetTable (
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ACPI_TABLE_TYPE TableType,
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UINT32 Instance,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_TABLE_HEADER *TblPtr;
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ACPI_STATUS Status;
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UINT32 RetBufLen;
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FUNCTION_TRACE ("AcpiGetTable");
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/* Ensure that ACPI has been initialized */
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ACPI_IS_INITIALIZATION_COMPLETE (Status);
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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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* If we have a buffer, we must have a length too
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*/
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if ((Instance == 0) ||
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(!RetBuffer) ||
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((!RetBuffer->Pointer) && (RetBuffer->Length)))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Check the table type and instance */
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if ((TableType > ACPI_TABLE_MAX) ||
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(IS_SINGLE_TABLE (AcpiGbl_AcpiTableData[TableType].Flags) &&
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Instance > 1))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Get a pointer to the entire table */
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Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
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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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* AcpiTbGetTablePtr will return a NULL pointer if the
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* table is not loaded.
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*/
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if (TblPtr == NULL)
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{
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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/*
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* Got a table ptr, assume it's ok and copy it to the user's buffer
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*/
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if (TableType == ACPI_TABLE_RSDP)
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{
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/*
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* RSD PTR is the only "table" without a header
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*/
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RetBufLen = sizeof (RSDP_DESCRIPTOR);
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}
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else
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{
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RetBufLen = TblPtr->Length;
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}
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/*
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* Verify we have space in the caller's buffer for the table
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*/
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if (RetBuffer->Length < RetBufLen)
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{
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RetBuffer->Length = RetBufLen;
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return_ACPI_STATUS (AE_BUFFER_OVERFLOW);
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}
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RetBuffer->Length = RetBufLen;
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MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, RetBufLen);
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return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|