401 lines
13 KiB
C
401 lines
13 KiB
C
/******************************************************************************
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*
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* Module Name: dtsubtable.c - handling of subtables within ACPI tables
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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 - 2010, 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 __DTSUBTABLE_C__
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#include "aslcompiler.h"
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#include "dtcompiler.h"
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#define _COMPONENT DT_COMPILER
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ACPI_MODULE_NAME ("dtsubtable")
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/******************************************************************************
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*
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* FUNCTION: DtCreateSubtable
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*
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* PARAMETERS: Buffer - Input buffer
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* Length - Buffer length
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* RetSubtable - Returned newly created subtable
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*
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* RETURN: None
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*
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* DESCRIPTION: Create a subtable that is not listed with ACPI_DMTABLE_INFO
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* For example, FACS has 24 bytes reserved at the end
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* and it's not listed at AcpiDmTableInfoFacs
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*
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*****************************************************************************/
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void
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DtCreateSubtable (
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UINT8 *Buffer,
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UINT32 Length,
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DT_SUBTABLE **RetSubtable)
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{
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DT_SUBTABLE *Subtable;
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Subtable = UtLocalCalloc (sizeof (DT_SUBTABLE));
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/* Create a new buffer for the subtable data */
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Subtable->Buffer = UtLocalCalloc (Length);
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ACPI_MEMCPY (Subtable->Buffer, Buffer, Length);
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Subtable->Length = Length;
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Subtable->TotalLength = Length;
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*RetSubtable = Subtable;
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}
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/******************************************************************************
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*
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* FUNCTION: DtInsertSubtable
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*
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* PARAMETERS: ParentTable - The Parent of the new subtable
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* Subtable - The new subtable to insert
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*
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* RETURN: None
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*
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* DESCRIPTION: Insert the new subtable to the parent table
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*
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*****************************************************************************/
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void
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DtInsertSubtable (
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DT_SUBTABLE *ParentTable,
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DT_SUBTABLE *Subtable)
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{
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DT_SUBTABLE *ChildTable;
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Subtable->Peer = NULL;
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Subtable->Parent = ParentTable;
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/* Link the new entry into the child list */
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if (!ParentTable->Child)
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{
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ParentTable->Child = Subtable;
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}
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else
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{
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/* Walk to the end of the child list */
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ChildTable = ParentTable->Child;
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while (ChildTable->Peer)
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{
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ChildTable = ChildTable->Peer;
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}
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/* Add new subtable at the end of the child list */
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ChildTable->Peer = Subtable;
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}
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}
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/******************************************************************************
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*
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* FUNCTION: DtPushSubtable
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*
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* PARAMETERS: Subtable - Subtable to push
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*
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* RETURN: None
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*
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* DESCRIPTION: Push a subtable onto a subtable stack
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*
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*****************************************************************************/
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void
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DtPushSubtable (
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DT_SUBTABLE *Subtable)
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{
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Subtable->StackTop = Gbl_SubtableStack;
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Gbl_SubtableStack = Subtable;
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}
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/******************************************************************************
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*
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* FUNCTION: DtPopSubtable
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Pop a subtable from a subtable stack. Uses global SubtableStack
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*
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*****************************************************************************/
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void
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DtPopSubtable (
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void)
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{
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DT_SUBTABLE *Subtable;
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Subtable = Gbl_SubtableStack;
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if (Subtable)
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{
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Gbl_SubtableStack = Subtable->StackTop;
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}
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}
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/******************************************************************************
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*
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* FUNCTION: DtPeekSubtable
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*
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* PARAMETERS: None
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*
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* RETURN: The subtable on top of stack
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*
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* DESCRIPTION: Get the subtable on top of stack
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*
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*****************************************************************************/
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DT_SUBTABLE *
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DtPeekSubtable (
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void)
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{
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return (Gbl_SubtableStack);
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}
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/******************************************************************************
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*
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* FUNCTION: DtGetNextSubtable
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*
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* PARAMETERS: ParentTable - Parent table whose children we are
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* getting
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* ChildTable - Previous child that was found.
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* The NEXT child will be returned
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*
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* RETURN: Pointer to the NEXT child or NULL if none is found.
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*
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* DESCRIPTION: Return the next peer subtable within the tree.
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*
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*****************************************************************************/
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DT_SUBTABLE *
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DtGetNextSubtable (
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DT_SUBTABLE *ParentTable,
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DT_SUBTABLE *ChildTable)
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{
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ACPI_FUNCTION_ENTRY ();
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if (!ChildTable)
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{
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/* It's really the parent's _scope_ that we want */
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return (ParentTable->Child);
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}
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/* Otherwise just return the next peer (NULL if at end-of-list) */
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return (ChildTable->Peer);
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}
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/******************************************************************************
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*
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* FUNCTION: DtGetParentSubtable
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*
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* PARAMETERS: Subtable - Current subtable
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*
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* RETURN: Parent of the given subtable
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*
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* DESCRIPTION: Get the parent of the given subtable in the tree
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*
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*****************************************************************************/
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DT_SUBTABLE *
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DtGetParentSubtable (
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DT_SUBTABLE *Subtable)
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{
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if (!Subtable)
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{
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return (NULL);
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}
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return (Subtable->Parent);
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}
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/******************************************************************************
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*
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* FUNCTION: DtGetSubtableLength
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*
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* PARAMETERS: Field - Current field list pointer
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* Info - Data table info
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*
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* RETURN: Subtable length
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*
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* DESCRIPTION: Get length of bytes needed to compile the subtable
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*
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*****************************************************************************/
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UINT32
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DtGetSubtableLength (
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DT_FIELD *Field,
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ACPI_DMTABLE_INFO *Info)
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{
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UINT32 ByteLength = 0;
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/* Walk entire Info table; Null name terminates */
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for (; Info->Name; Info++)
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{
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ByteLength += DtGetFieldLength (Field, Info);
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}
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return (ByteLength);
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}
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/******************************************************************************
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*
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* FUNCTION: DtSetSubtableLength
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*
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* PARAMETERS: Subtable - Subtable
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*
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* RETURN: None
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*
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* DESCRIPTION: Set length of the subtable into its length field
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*
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*****************************************************************************/
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void
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DtSetSubtableLength (
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DT_SUBTABLE *Subtable)
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{
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if (!Subtable->LengthField)
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{
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return;
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}
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ACPI_MEMCPY (Subtable->LengthField, &Subtable->TotalLength,
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Subtable->SizeOfLengthField);
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}
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