586 lines
19 KiB
C
586 lines
19 KiB
C
/******************************************************************************
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*
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* Module Name: tbget - ACPI Table get* routines
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* $Revision: 83 $
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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 - 2003, 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 __TBGET_C__
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#include "acpi.h"
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#include "actables.h"
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME ("tbget")
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbGetTable
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* TableInfo - Where table info is returned
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*
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* RETURN: None
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*
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* DESCRIPTION: Get entire table of unknown size.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetTable (
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ACPI_POINTER *Address,
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ACPI_TABLE_DESC *TableInfo)
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{
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ACPI_STATUS Status;
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ACPI_TABLE_HEADER Header;
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ACPI_FUNCTION_TRACE ("TbGetTable");
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/*
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* Get the header in order to get signature and table size
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*/
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Status = AcpiTbGetTableHeader (Address, &Header);
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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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/* Get the entire table */
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Status = AcpiTbGetTableBody (Address, &Header, TableInfo);
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if (ACPI_FAILURE (Status))
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{
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ACPI_REPORT_ERROR (("Could not get ACPI table (size %X), %s\n",
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Header.Length, AcpiFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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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: AcpiTbGetTableHeader
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* ReturnHeader - Where the table header is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get an ACPI table header. Works in both physical or virtual
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* addressing mode. Works with both physical or logical pointers.
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* Table is either copied or mapped, depending on the pointer
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* type and mode of the processor.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetTableHeader (
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ACPI_POINTER *Address,
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ACPI_TABLE_HEADER *ReturnHeader)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_TABLE_HEADER *Header = NULL;
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ACPI_FUNCTION_TRACE ("TbGetTableHeader");
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/*
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* Flags contains the current processor mode (Virtual or Physical addressing)
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* The PointerType is either Logical or Physical
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*/
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switch (Address->PointerType)
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{
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case ACPI_PHYSMODE_PHYSPTR:
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case ACPI_LOGMODE_LOGPTR:
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/* Pointer matches processor mode, copy the header */
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ACPI_MEMCPY (ReturnHeader, Address->Pointer.Logical, sizeof (ACPI_TABLE_HEADER));
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break;
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case ACPI_LOGMODE_PHYSPTR:
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/* Create a logical address for the physical pointer*/
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Status = AcpiOsMapMemory (Address->Pointer.Physical, sizeof (ACPI_TABLE_HEADER),
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(void **) &Header);
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if (ACPI_FAILURE (Status))
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{
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ACPI_REPORT_ERROR (("Could not map memory at %8.8X%8.8X for length %X\n",
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ACPI_HIDWORD (Address->Pointer.Physical),
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ACPI_LODWORD (Address->Pointer.Physical),
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sizeof (ACPI_TABLE_HEADER)));
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return_ACPI_STATUS (Status);
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}
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/* Copy header and delete mapping */
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ACPI_MEMCPY (ReturnHeader, Header, sizeof (ACPI_TABLE_HEADER));
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AcpiOsUnmapMemory (Header, sizeof (ACPI_TABLE_HEADER));
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break;
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default:
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ACPI_REPORT_ERROR (("Invalid address flags %X\n",
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Address->PointerType));
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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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: AcpiTbGetTableBody
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* Header - Header of the table to retrieve
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* TableInfo - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get an entire ACPI table with support to allow the host OS to
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* replace the table with a newer version (table override.)
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* Works in both physical or virtual
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* addressing mode. Works with both physical or logical pointers.
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* Table is either copied or mapped, depending on the pointer
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* type and mode of the processor.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetTableBody (
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ACPI_POINTER *Address,
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ACPI_TABLE_HEADER *Header,
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ACPI_TABLE_DESC *TableInfo)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("TbGetTableBody");
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if (!TableInfo || !Address)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* Attempt table override.
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*/
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Status = AcpiTbTableOverride (Header, TableInfo);
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if (ACPI_SUCCESS (Status))
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{
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/* Table was overridden by the host OS */
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return_ACPI_STATUS (Status);
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}
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/* No override, get the original table */
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Status = AcpiTbGetThisTable (Address, Header, TableInfo);
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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: AcpiTbTableOverride
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*
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* PARAMETERS: Header - Pointer to table header
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* TableInfo - Return info if table is overridden
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*
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* RETURN: None
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*
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* DESCRIPTION: Attempts override of current table with a new one if provided
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* by the host OS.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbTableOverride (
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ACPI_TABLE_HEADER *Header,
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ACPI_TABLE_DESC *TableInfo)
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{
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ACPI_TABLE_HEADER *NewTable;
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ACPI_STATUS Status;
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ACPI_POINTER Address;
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ACPI_FUNCTION_TRACE ("TbTableOverride");
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/*
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* The OSL will examine the header and decide whether to override this
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* table. If it decides to override, a table will be returned in NewTable,
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* which we will then copy.
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*/
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Status = AcpiOsTableOverride (Header, &NewTable);
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if (ACPI_FAILURE (Status))
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{
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/* Some severe error from the OSL, but we basically ignore it */
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ACPI_REPORT_ERROR (("Could not override ACPI table, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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if (!NewTable)
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{
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/* No table override */
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/*
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* We have a new table to override the old one. Get a copy of
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* the new one. We know that the new table has a logical pointer.
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*/
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Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
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Address.Pointer.Logical = NewTable;
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Status = AcpiTbGetThisTable (&Address, NewTable, TableInfo);
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if (ACPI_FAILURE (Status))
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{
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ACPI_REPORT_ERROR (("Could not copy override ACPI table, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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/* Copy the table info */
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ACPI_REPORT_INFO (("Table [%4.4s] replaced by host OS\n",
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TableInfo->Pointer->Signature));
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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: AcpiTbGetThisTable
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* Header - Header of the table to retrieve
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* TableInfo - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual
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* addressing mode. Works with both physical or logical pointers.
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* Table is either copied or mapped, depending on the pointer
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* type and mode of the processor.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetThisTable (
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ACPI_POINTER *Address,
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ACPI_TABLE_HEADER *Header,
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ACPI_TABLE_DESC *TableInfo)
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{
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ACPI_TABLE_HEADER *FullTable = NULL;
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UINT8 Allocation;
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE ("TbGetThisTable");
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/*
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* Flags contains the current processor mode (Virtual or Physical addressing)
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* The PointerType is either Logical or Physical
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*/
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switch (Address->PointerType)
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{
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case ACPI_PHYSMODE_PHYSPTR:
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case ACPI_LOGMODE_LOGPTR:
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/* Pointer matches processor mode, copy the table to a new buffer */
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FullTable = ACPI_MEM_ALLOCATE (Header->Length);
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if (!FullTable)
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{
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ACPI_REPORT_ERROR (("Could not allocate table memory for [%4.4s] length %X\n",
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Header->Signature, Header->Length));
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the entire table (including header) to the local buffer */
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ACPI_MEMCPY (FullTable, Address->Pointer.Logical, Header->Length);
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/* Save allocation type */
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Allocation = ACPI_MEM_ALLOCATED;
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break;
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case ACPI_LOGMODE_PHYSPTR:
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/*
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* Just map the table's physical memory
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* into our address space.
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*/
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Status = AcpiOsMapMemory (Address->Pointer.Physical, (ACPI_SIZE) Header->Length,
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(void **) &FullTable);
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if (ACPI_FAILURE (Status))
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{
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ACPI_REPORT_ERROR (("Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X\n",
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Header->Signature,
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ACPI_HIDWORD (Address->Pointer.Physical),
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ACPI_LODWORD (Address->Pointer.Physical), Header->Length));
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return (Status);
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}
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/* Save allocation type */
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Allocation = ACPI_MEM_MAPPED;
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid address flags %X\n",
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Address->PointerType));
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* Validate checksum for _most_ tables,
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* even the ones whose signature we don't recognize
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*/
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if (TableInfo->Type != ACPI_TABLE_FACS)
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{
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Status = AcpiTbVerifyTableChecksum (FullTable);
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#if (!ACPI_CHECKSUM_ABORT)
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if (ACPI_FAILURE (Status))
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{
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/* Ignore the error if configuration says so */
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Status = AE_OK;
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}
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#endif
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}
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/* Return values */
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TableInfo->Pointer = FullTable;
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TableInfo->Length = (ACPI_SIZE) Header->Length;
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TableInfo->Allocation = Allocation;
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"Found table [%4.4s] at %8.8X%8.8X, mapped/copied to %p\n",
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FullTable->Signature,
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ACPI_HIDWORD (Address->Pointer.Physical),
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ACPI_LODWORD (Address->Pointer.Physical), FullTable));
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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: AcpiTbGetTablePtr
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*
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* PARAMETERS: TableType - one of the defined table types
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* Instance - Which table of this type
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* TablePtrLoc - pointer to location to place the pointer for
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* return
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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 the pointer to an ACPI table.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetTablePtr (
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ACPI_TABLE_TYPE TableType,
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UINT32 Instance,
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ACPI_TABLE_HEADER **TablePtrLoc)
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{
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ACPI_TABLE_DESC *TableDesc;
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UINT32 i;
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ACPI_FUNCTION_TRACE ("TbGetTablePtr");
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if (!AcpiGbl_DSDT)
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{
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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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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/*
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* For all table types (Single/Multiple), the first
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* instance is always in the list head.
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*/
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if (Instance == 1)
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{
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/*
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* Just pluck the pointer out of the global table!
|
|
* Will be null if no table is present
|
|
*/
|
|
*TablePtrLoc = AcpiGbl_AcpiTables[TableType].Pointer;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Check for instance out of range
|
|
*/
|
|
if (Instance > AcpiGbl_AcpiTables[TableType].Count)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Walk the list to get the desired table
|
|
* Since the if (Instance == 1) check above checked for the
|
|
* first table, setting TableDesc equal to the .Next member
|
|
* is actually pointing to the second table. Therefore, we
|
|
* need to walk from the 2nd table until we reach the Instance
|
|
* that the user is looking for and return its table pointer.
|
|
*/
|
|
TableDesc = AcpiGbl_AcpiTables[TableType].Next;
|
|
for (i = 2; i < Instance; i++)
|
|
{
|
|
TableDesc = TableDesc->Next;
|
|
}
|
|
|
|
/* We are now pointing to the requested table's descriptor */
|
|
|
|
*TablePtrLoc = TableDesc->Pointer;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|