/******************************************************************************
*
* Module Name: dtsubtable.c - handling of subtables within ACPI tables
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __DTSUBTABLE_C__
#include "aslcompiler.h"
#include "dtcompiler.h"
#define _COMPONENT DT_COMPILER
ACPI_MODULE_NAME ("dtsubtable")
/******************************************************************************
*
* FUNCTION: DtCreateSubtable
*
* PARAMETERS: Buffer - Input buffer
* Length - Buffer length
* RetSubtable - Returned newly created subtable
*
* RETURN: None
*
* DESCRIPTION: Create a subtable that is not listed with ACPI_DMTABLE_INFO
* For example, FACS has 24 bytes reserved at the end
* and it's not listed at AcpiDmTableInfoFacs
*
*****************************************************************************/
void
DtCreateSubtable (
UINT8 *Buffer,
UINT32 Length,
DT_SUBTABLE **RetSubtable)
{
DT_SUBTABLE *Subtable;
Subtable = UtLocalCalloc (sizeof (DT_SUBTABLE));
/* Create a new buffer for the subtable data */
Subtable->Buffer = UtLocalCalloc (Length);
ACPI_MEMCPY (Subtable->Buffer, Buffer, Length);
Subtable->Length = Length;
Subtable->TotalLength = Length;
*RetSubtable = Subtable;
}
/******************************************************************************
*
* FUNCTION: DtInsertSubtable
*
* PARAMETERS: ParentTable - The Parent of the new subtable
* Subtable - The new subtable to insert
*
* RETURN: None
*
* DESCRIPTION: Insert the new subtable to the parent table
*
*****************************************************************************/
void
DtInsertSubtable (
DT_SUBTABLE *ParentTable,
DT_SUBTABLE *Subtable)
{
DT_SUBTABLE *ChildTable;
Subtable->Peer = NULL;
Subtable->Parent = ParentTable;
/* Link the new entry into the child list */
if (!ParentTable->Child)
{
ParentTable->Child = Subtable;
}
else
{
/* Walk to the end of the child list */
ChildTable = ParentTable->Child;
while (ChildTable->Peer)
{
ChildTable = ChildTable->Peer;
}
/* Add new subtable at the end of the child list */
ChildTable->Peer = Subtable;
}
}
/******************************************************************************
*
* FUNCTION: DtPushSubtable
*
* PARAMETERS: Subtable - Subtable to push
*
* RETURN: None
*
* DESCRIPTION: Push a subtable onto a subtable stack
*
*****************************************************************************/
void
DtPushSubtable (
DT_SUBTABLE *Subtable)
{
Subtable->StackTop = Gbl_SubtableStack;
Gbl_SubtableStack = Subtable;
}
/******************************************************************************
*
* FUNCTION: DtPopSubtable
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Pop a subtable from a subtable stack. Uses global SubtableStack
*
*****************************************************************************/
void
DtPopSubtable (
void)
{
DT_SUBTABLE *Subtable;
Subtable = Gbl_SubtableStack;
if (Subtable)
{
Gbl_SubtableStack = Subtable->StackTop;
}
}
/******************************************************************************
*
* FUNCTION: DtPeekSubtable
*
* PARAMETERS: None
*
* RETURN: The subtable on top of stack
*
* DESCRIPTION: Get the subtable on top of stack
*
*****************************************************************************/
DT_SUBTABLE *
DtPeekSubtable (
void)
{
return (Gbl_SubtableStack);
}
/******************************************************************************
*
* FUNCTION: DtGetNextSubtable
*
* PARAMETERS: ParentTable - Parent table whose children we are
* getting
* ChildTable - Previous child that was found.
* The NEXT child will be returned
*
* RETURN: Pointer to the NEXT child or NULL if none is found.
*
* DESCRIPTION: Return the next peer subtable within the tree.
*
*****************************************************************************/
DT_SUBTABLE *
DtGetNextSubtable (
DT_SUBTABLE *ParentTable,
DT_SUBTABLE *ChildTable)
{
ACPI_FUNCTION_ENTRY ();
if (!ChildTable)
{
/* It's really the parent's _scope_ that we want */
return (ParentTable->Child);
}
/* Otherwise just return the next peer (NULL if at end-of-list) */
return (ChildTable->Peer);
}
/******************************************************************************
*
* FUNCTION: DtGetParentSubtable
*
* PARAMETERS: Subtable - Current subtable
*
* RETURN: Parent of the given subtable
*
* DESCRIPTION: Get the parent of the given subtable in the tree
*
*****************************************************************************/
DT_SUBTABLE *
DtGetParentSubtable (
DT_SUBTABLE *Subtable)
{
if (!Subtable)
{
return (NULL);
}
return (Subtable->Parent);
}
/******************************************************************************
*
* FUNCTION: DtGetSubtableLength
*
* PARAMETERS: Field - Current field list pointer
* Info - Data table info
*
* RETURN: Subtable length
*
* DESCRIPTION: Get length of bytes needed to compile the subtable
*
*****************************************************************************/
UINT32
DtGetSubtableLength (
DT_FIELD *Field,
ACPI_DMTABLE_INFO *Info)
{
UINT32 ByteLength = 0;
UINT8 Step;
UINT8 i;
/* Walk entire Info table; Null name terminates */
for (; Info->Name; Info++)
{
if (!Field)
{
goto Error;
}
ByteLength += DtGetFieldLength (Field, Info);
switch (Info->Opcode)
{
case ACPI_DMT_GAS:
Step = 5;
break;
case ACPI_DMT_HESTNTFY:
Step = 9;
break;
default:
Step = 1;
break;
}
for (i = 0; i < Step; i++)
{
if (!Field)
{
goto Error;
}
Field = Field->Next;
}
}
return (ByteLength);
Error:
if (!Field)
{
sprintf (MsgBuffer
, "Found NULL field - Field name \"%s\" needed", Info->Name);
DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
}
return (ASL_EOF);
}
/******************************************************************************
*
* FUNCTION: DtSetSubtableLength
*
* PARAMETERS: Subtable - Subtable
*
* RETURN: None
*
* DESCRIPTION: Set length of the subtable into its length field
*
*****************************************************************************/
void
DtSetSubtableLength (
DT_SUBTABLE *Subtable)
{
if (!Subtable->LengthField)
{
return;
}
ACPI_MEMCPY (Subtable->LengthField, &Subtable->TotalLength,
Subtable->SizeOfLengthField);
}