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NetBSD/sys/dist/acpica/tbxface.c

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/******************************************************************************
*
* Module Name: tbxface - Public interfaces to the ACPI subsystem
* ACPI table oriented interfaces
* xRevision: 1.73 $
*
*****************************************************************************/
/******************************************************************************
*
* 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
* 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.
*
*****************************************************************************/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tbxface.c,v 1.1 2006/03/23 13:36:32 kochi Exp $");
#define __TBXFACE_C__
#include "acpi.h"
#include "acnamesp.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME ("tbxface")
/*******************************************************************************
*
* FUNCTION: AcpiLoadTables
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: This function is called to load the ACPI tables from the
* provided RSDT
*
******************************************************************************/
ACPI_STATUS
AcpiLoadTables (
void)
{
ACPI_POINTER RsdpAddress;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE ("AcpiLoadTables");
/* Get the RSDP */
Status = AcpiOsGetRootPointer (ACPI_LOGICAL_ADDRESSING,
&RsdpAddress);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "Could not get the RSDP"));
goto ErrorExit;
}
/* Map and validate the RSDP */
AcpiGbl_TableFlags = RsdpAddress.PointerType;
Status = AcpiTbVerifyRsdp (&RsdpAddress);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "During RSDP validation"));
goto ErrorExit;
}
/* Get the RSDT via the RSDP */
Status = AcpiTbGetTableRsdt ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "Could not load RSDT"));
goto ErrorExit;
}
/* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */
Status = AcpiTbGetRequiredTables ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not get all required tables (DSDT/FADT/FACS)"));
goto ErrorExit;
}
ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
/* Load the namespace from the tables */
Status = AcpiNsLoadNamespace ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "Could not load namespace"));
goto ErrorExit;
}
return_ACPI_STATUS (AE_OK);
ErrorExit:
ACPI_EXCEPTION ((AE_INFO, Status, "Could not load tables"));
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiLoadTable
*
* PARAMETERS: TablePtr - pointer to a buffer containing the entire
* table to be loaded
*
* RETURN: Status
*
* DESCRIPTION: This function is called to load a table from the caller's
* buffer. The buffer must contain an entire ACPI Table including
* a valid header. The header fields will be verified, and if it
* is determined that the table is invalid, the call will fail.
*
******************************************************************************/
ACPI_STATUS
AcpiLoadTable (
ACPI_TABLE_HEADER *TablePtr)
{
ACPI_STATUS Status;
ACPI_TABLE_DESC TableInfo;
ACPI_POINTER Address;
ACPI_FUNCTION_TRACE ("AcpiLoadTable");
if (!TablePtr)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Copy the table to a local buffer */
Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
Address.Pointer.Logical = TablePtr;
Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Check signature for a valid table type */
Status = AcpiTbRecognizeTable (&TableInfo, ACPI_TABLE_ALL);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Install the new table into the local data structures */
Status = AcpiTbInstallTable (&TableInfo);
if (ACPI_FAILURE (Status))
{
if (Status == AE_ALREADY_EXISTS)
{
/* Table already exists, no error */
Status = AE_OK;
}
/* Free table allocated by AcpiTbGetTableBody */
AcpiTbDeleteSingleTable (&TableInfo);
return_ACPI_STATUS (Status);
}
/* Convert the table to common format if necessary */
switch (TableInfo.Type)
{
case ACPI_TABLE_FADT:
Status = AcpiTbConvertTableFadt ();
break;
case ACPI_TABLE_FACS:
Status = AcpiTbBuildCommonFacs (&TableInfo);
break;
default:
/* Load table into namespace if it contains executable AML */
Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
break;
}
if (ACPI_FAILURE (Status))
{
/* Uninstall table and free the buffer */
(void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUnloadTable
*
* PARAMETERS: TableType - Type of table to be unloaded
*
* RETURN: Status
*
* DESCRIPTION: This routine is used to force the unload of a table
*
******************************************************************************/
ACPI_STATUS
AcpiUnloadTable (
ACPI_TABLE_TYPE TableType)
{
ACPI_TABLE_DESC *TableDesc;
ACPI_FUNCTION_TRACE ("AcpiUnloadTable");
/* Parameter validation */
if (TableType > ACPI_TABLE_MAX)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Find all tables of the requested type */
TableDesc = AcpiGbl_TableLists[TableType].Next;
while (TableDesc)
{
/*
* Delete all namespace entries owned by this table. Note that these
* entries can appear anywhere in the namespace by virtue of the AML
* "Scope" operator. Thus, we need to track ownership by an ID, not
* simply a position within the hierarchy
*/
AcpiNsDeleteNamespaceByOwner (TableDesc->OwnerId);
AcpiUtReleaseOwnerId (&TableDesc->OwnerId);
TableDesc = TableDesc->Next;
}
/* Delete (or unmap) all tables of this type */
AcpiTbDeleteTablesByType (TableType);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiGetTableHeader
*
* PARAMETERS: TableType - one of the defined table types
* Instance - the non zero instance of the table, allows
* support for multiple tables of the same type
* see AcpiGbl_AcpiTableFlag
* OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful
*
* DESCRIPTION: This function is called to get an ACPI table header. The caller
* supplies an pointer to a data area sufficient to contain an ACPI
* ACPI_TABLE_HEADER structure.
*
* The header contains a length field that can be used to determine
* the size of the buffer needed to contain the entire table. This
* function is not valid for the RSD PTR table since it does not
* have a standard header and is fixed length.
*
******************************************************************************/
ACPI_STATUS
AcpiGetTableHeader (
ACPI_TABLE_TYPE TableType,
UINT32 Instance,
ACPI_TABLE_HEADER *OutTableHeader)
{
ACPI_TABLE_HEADER *TblPtr;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE ("AcpiGetTableHeader");
if ((Instance == 0) ||
(TableType == ACPI_TABLE_RSDP) ||
(!OutTableHeader))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Check the table type and instance */
if ((TableType > ACPI_TABLE_MAX) ||
(ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
Instance > 1))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Get a pointer to the entire table */
Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* The function will return a NULL pointer if the table is not loaded */
if (TblPtr == NULL)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Copy the header to the caller's buffer */
ACPI_MEMCPY ((void *) OutTableHeader, (void *) TblPtr,
sizeof (ACPI_TABLE_HEADER));
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiGetTable
*
* PARAMETERS: TableType - one of the defined table types
* Instance - the non zero instance of the table, allows
* support for multiple tables of the same type
* see AcpiGbl_AcpiTableFlag
* RetBuffer - pointer to a structure containing a buffer to
* receive the table
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get an ACPI table. The caller
* supplies an OutBuffer large enough to contain the entire ACPI
* table. The caller should call the AcpiGetTableHeader function
* first to determine the buffer size needed. Upon completion
* the OutBuffer->Length field will indicate the number of bytes
* copied into the OutBuffer->BufPtr buffer. This table will be
* a complete table including the header.
*
******************************************************************************/
ACPI_STATUS
AcpiGetTable (
ACPI_TABLE_TYPE TableType,
UINT32 Instance,
ACPI_BUFFER *RetBuffer)
{
ACPI_TABLE_HEADER *TblPtr;
ACPI_STATUS Status;
ACPI_SIZE TableLength;
ACPI_FUNCTION_TRACE ("AcpiGetTable");
/* Parameter validation */
if (Instance == 0)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Status = AcpiUtValidateBuffer (RetBuffer);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Check the table type and instance */
if ((TableType > ACPI_TABLE_MAX) ||
(ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
Instance > 1))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Get a pointer to the entire table */
Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* AcpiTbGetTablePtr will return a NULL pointer if the
* table is not loaded.
*/
if (TblPtr == NULL)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Get the table length */
if (TableType == ACPI_TABLE_RSDP)
{
/* RSD PTR is the only "table" without a header */
TableLength = sizeof (RSDP_DESCRIPTOR);
}
else
{
TableLength = (ACPI_SIZE) TblPtr->Length;
}
/* Validate/Allocate/Clear caller buffer */
Status = AcpiUtInitializeBuffer (RetBuffer, TableLength);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Copy the table to the buffer */
ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength);
return_ACPI_STATUS (AE_OK);
}
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