tbget.c revision 30082d0cc16bf5799269ca464a219de900f519cd
/******************************************************************************
*
* Module Name: tbget - ACPI Table get* routines
* $Revision: 1.98 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2006, 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
* 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
* 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
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* 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 __TBGET_C__
#include "acpi.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME ("tbget")
/* Local prototypes */
static ACPI_STATUS
static ACPI_STATUS
/*******************************************************************************
*
* FUNCTION: AcpiTbGetTable
*
* PARAMETERS: Address - Address of table to retrieve. Can be
* Logical or Physical
* TableInfo - Where table info is returned
*
* RETURN: None
*
* DESCRIPTION: Get entire table of unknown size.
*
******************************************************************************/
{
ACPI_FUNCTION_TRACE ("TbGetTable");
/* Get the header in order to get signature and table size */
if (ACPI_FAILURE (Status))
{
}
/* Get the entire table */
if (ACPI_FAILURE (Status))
{
}
}
/*******************************************************************************
*
* FUNCTION: AcpiTbGetTableHeader
*
* PARAMETERS: Address - Address of table to retrieve. Can be
* Logical or Physical
* ReturnHeader - Where the table header is returned
*
* RETURN: Status
*
* DESCRIPTION: Get an ACPI table header. Works in both physical or virtual
* addressing mode. Works with both physical or logical pointers.
* Table is either copied or mapped, depending on the pointer
* type and mode of the processor.
*
******************************************************************************/
{
ACPI_FUNCTION_TRACE ("TbGetTableHeader");
/*
* Flags contains the current processor mode (Virtual or Physical
* addressing) The PointerType is either Logical or Physical
*/
switch (Address->PointerType)
{
case ACPI_PHYSMODE_PHYSPTR:
case ACPI_LOGMODE_LOGPTR:
/* Pointer matches processor mode, copy the header */
sizeof (ACPI_TABLE_HEADER));
break;
case ACPI_LOGMODE_PHYSPTR:
/* Create a logical address for the physical pointer*/
sizeof (ACPI_TABLE_HEADER), (void *) &Header);
if (ACPI_FAILURE (Status))
{
"Could not map memory at %8.8X%8.8X for table header",
}
/* Copy header and delete mapping */
break;
default:
Address->PointerType));
}
}
/*******************************************************************************
*
* FUNCTION: AcpiTbGetTableBody
*
* PARAMETERS: Address - Address of table to retrieve. Can be
* Logical or Physical
* Header - Header of the table to retrieve
* TableInfo - Where the table info is returned
*
* RETURN: Status
*
* DESCRIPTION: Get an entire ACPI table with support to allow the host OS to
* replace the table with a newer version (table override.)
* Works in both physical or virtual
* addressing mode. Works with both physical or logical pointers.
* Table is either copied or mapped, depending on the pointer
* type and mode of the processor.
*
******************************************************************************/
{
ACPI_FUNCTION_TRACE ("TbGetTableBody");
{
}
/* Attempt table override. */
if (ACPI_SUCCESS (Status))
{
/* Table was overridden by the host OS */
}
/* No override, get the original table */
}
/*******************************************************************************
*
* FUNCTION: AcpiTbTableOverride
*
* PARAMETERS: Header - Pointer to table header
* TableInfo - Return info if table is overridden
*
* RETURN: None
*
* DESCRIPTION: Attempts override of current table with a new one if provided
* by the host OS.
*
******************************************************************************/
static ACPI_STATUS
{
ACPI_FUNCTION_TRACE ("TbTableOverride");
/*
* The OSL will examine the header and decide whether to override this
* table. If it decides to override, a table will be returned in NewTable,
* which we will then copy.
*/
if (ACPI_FAILURE (Status))
{
/* Some severe error from the OSL, but we basically ignore it */
}
if (!NewTable)
{
/* No table override */
}
/*
* We have a new table to override the old one. Get a copy of
* the new one. We know that the new table has a logical pointer.
*/
if (ACPI_FAILURE (Status))
{
}
/* Copy the table info */
}
/*******************************************************************************
*
* FUNCTION: AcpiTbGetThisTable
*
* PARAMETERS: Address - Address of table to retrieve. Can be
* Logical or Physical
* Header - Header of the table to retrieve
* TableInfo - Where the table info is returned
*
* RETURN: Status
*
* DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual
* addressing mode. Works with both physical or logical pointers.
* Table is either copied or mapped, depending on the pointer
* type and mode of the processor.
*
******************************************************************************/
static ACPI_STATUS
{
ACPI_FUNCTION_TRACE ("TbGetThisTable");
/*
* Flags contains the current processor mode (Virtual or Physical
* addressing) The PointerType is either Logical or Physical
*/
switch (Address->PointerType)
{
case ACPI_PHYSMODE_PHYSPTR:
case ACPI_LOGMODE_LOGPTR:
/* Pointer matches processor mode, copy the table to a new buffer */
if (!FullTable)
{
"Could not allocate table memory for [%4.4s] length %X",
}
/* Copy the entire table (including header) to the local buffer */
/* Save allocation type */
break;
case ACPI_LOGMODE_PHYSPTR:
/*
* Just map the table's physical memory
* into our address space.
*/
if (ACPI_FAILURE (Status))
{
"Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X",
return (Status);
}
/* Save allocation type */
break;
default:
Address->PointerType));
}
/*
* Validate checksum for _most_ tables,
* even the ones whose signature we don't recognize
*/
{
#if (!ACPI_CHECKSUM_ABORT)
if (ACPI_FAILURE (Status))
{
/* Ignore the error if configuration says so */
}
#endif
}
/* Return values */
}
/*******************************************************************************
*
* FUNCTION: AcpiTbGetTablePtr
*
* PARAMETERS: TableType - one of the defined table types
* Instance - Which table of this type
* TablePtrLoc - pointer to location to place the pointer for
* return
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the pointer to an ACPI table.
*
******************************************************************************/
{
UINT32 i;
ACPI_FUNCTION_TRACE ("TbGetTablePtr");
if (!AcpiGbl_DSDT)
{
}
if (TableType > ACPI_TABLE_MAX)
{
}
/*
* instance is always in the list head.
*/
if (Instance == 1)
{
/* Get the first */
*TablePtrLoc = NULL;
{
}
}
/* Check for instance out of range */
{
}
/* 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.
*/
for (i = 2; i < Instance; i++)
{
}
/* We are now pointing to the requested table's descriptor */
}