557 lines
17 KiB
C
557 lines
17 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: nsload - namespace loading/expanding/contracting procedures
|
|
* xRevision: 67 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2004, 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: nsload.c,v 1.10 2004/02/14 16:57:24 kochi Exp $");
|
|
|
|
#define __NSLOAD_C__
|
|
|
|
#include "acpi.h"
|
|
#include "acnamesp.h"
|
|
#include "acdispat.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME ("nsload")
|
|
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsLoadTable
|
|
*
|
|
* PARAMETERS: TableDesc - Descriptor for table to be loaded
|
|
* Node - Owning NS node
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load one ACPI table into the namespace
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsLoadTable (
|
|
ACPI_TABLE_DESC *TableDesc,
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("NsLoadTable");
|
|
|
|
|
|
/* Check if table contains valid AML (must be DSDT, PSDT, SSDT, etc.) */
|
|
|
|
if (!(AcpiGbl_TableData[TableDesc->Type].Flags & ACPI_TABLE_EXECUTABLE))
|
|
{
|
|
/* Just ignore this table */
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Check validity of the AML start and length */
|
|
|
|
if (!TableDesc->AmlStart)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null AML pointer\n"));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AML block at %p\n", TableDesc->AmlStart));
|
|
|
|
/* Ignore table if there is no AML contained within */
|
|
|
|
if (!TableDesc->AmlLength)
|
|
{
|
|
ACPI_REPORT_WARNING (("Zero-length AML block in table [%4.4s]\n", TableDesc->Pointer->Signature));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Parse the table and load the namespace with all named
|
|
* objects found within. Control methods are NOT parsed
|
|
* at this time. In fact, the control methods cannot be
|
|
* parsed until the entire namespace is loaded, because
|
|
* if a control method makes a forward reference (call)
|
|
* to another control method, we can't continue parsing
|
|
* because we don't know how many arguments to parse next!
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Loading table into namespace ****\n"));
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiNsParseTable (TableDesc, Node->Child);
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Now we can parse the control methods. We always parse
|
|
* them here for a sanity check, and if configured for
|
|
* just-in-time parsing, we delete the control method
|
|
* parse trees.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"**** Begin Table Method Parsing and Object Initialization ****\n"));
|
|
|
|
Status = AcpiDsInitializeObjects (TableDesc, Node);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"**** Completed Table Method Parsing and Object Initialization ****\n"));
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsLoadTableByType
|
|
*
|
|
* PARAMETERS: TableType - Id of the table type to load
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load an ACPI table or tables into the namespace. All tables
|
|
* of the given type are loaded. The mechanism allows this
|
|
* routine to be called repeatedly.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsLoadTableByType (
|
|
ACPI_TABLE_TYPE TableType)
|
|
{
|
|
UINT32 i;
|
|
ACPI_STATUS Status;
|
|
ACPI_TABLE_DESC *TableDesc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("NsLoadTableByType");
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Table types supported are:
|
|
* DSDT (one), SSDT/PSDT (multiple)
|
|
*/
|
|
switch (TableType)
|
|
{
|
|
case ACPI_TABLE_DSDT:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading DSDT\n"));
|
|
|
|
TableDesc = AcpiGbl_TableLists[ACPI_TABLE_DSDT].Next;
|
|
|
|
/* If table already loaded into namespace, just return */
|
|
|
|
if (TableDesc->LoadedIntoNamespace)
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Now load the single DSDT */
|
|
|
|
Status = AcpiNsLoadTable (TableDesc, AcpiGbl_RootNode);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
TableDesc->LoadedIntoNamespace = TRUE;
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
case ACPI_TABLE_SSDT:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d SSDTs\n",
|
|
AcpiGbl_TableLists[ACPI_TABLE_SSDT].Count));
|
|
|
|
/*
|
|
* Traverse list of SSDT tables
|
|
*/
|
|
TableDesc = AcpiGbl_TableLists[ACPI_TABLE_SSDT].Next;
|
|
for (i = 0; i < AcpiGbl_TableLists[ACPI_TABLE_SSDT].Count; i++)
|
|
{
|
|
/*
|
|
* Only attempt to load table if it is not
|
|
* already loaded!
|
|
*/
|
|
if (!TableDesc->LoadedIntoNamespace)
|
|
{
|
|
Status = AcpiNsLoadTable (TableDesc, AcpiGbl_RootNode);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
|
|
TableDesc->LoadedIntoNamespace = TRUE;
|
|
}
|
|
|
|
TableDesc = TableDesc->Next;
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TABLE_PSDT:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d PSDTs\n",
|
|
AcpiGbl_TableLists[ACPI_TABLE_PSDT].Count));
|
|
|
|
/*
|
|
* Traverse list of PSDT tables
|
|
*/
|
|
TableDesc = AcpiGbl_TableLists[ACPI_TABLE_PSDT].Next;
|
|
|
|
for (i = 0; i < AcpiGbl_TableLists[ACPI_TABLE_PSDT].Count; i++)
|
|
{
|
|
/* Only attempt to load table if it is not already loaded! */
|
|
|
|
if (!TableDesc->LoadedIntoNamespace)
|
|
{
|
|
Status = AcpiNsLoadTable (TableDesc, AcpiGbl_RootNode);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
|
|
TableDesc->LoadedIntoNamespace = TRUE;
|
|
}
|
|
|
|
TableDesc = TableDesc->Next;
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
default:
|
|
Status = AE_SUPPORT;
|
|
break;
|
|
}
|
|
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiLoadNamespace
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load the name space from what ever is pointed to by DSDT.
|
|
* (DSDT points to either the BIOS or a buffer.)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsLoadNamespace (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("AcpiLoadNameSpace");
|
|
|
|
|
|
/* There must be at least a DSDT installed */
|
|
|
|
if (AcpiGbl_DSDT == NULL)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "DSDT is not in memory\n"));
|
|
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
|
|
}
|
|
|
|
/*
|
|
* Load the namespace. The DSDT is required,
|
|
* but the SSDT and PSDT tables are optional.
|
|
*/
|
|
Status = AcpiNsLoadTableByType (ACPI_TABLE_DSDT);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Ignore exceptions from these */
|
|
|
|
(void) AcpiNsLoadTableByType (ACPI_TABLE_SSDT);
|
|
(void) AcpiNsLoadTableByType (ACPI_TABLE_PSDT);
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
|
|
"ACPI Namespace successfully loaded at root %p\n",
|
|
AcpiGbl_RootNode));
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsDeleteSubtree
|
|
*
|
|
* PARAMETERS: StartHandle - Handle in namespace where search begins
|
|
*
|
|
* RETURNS Status
|
|
*
|
|
* DESCRIPTION: Walks the namespace starting at the given handle and deletes
|
|
* all objects, entries, and scopes in the entire subtree.
|
|
*
|
|
* Namespace/Interpreter should be locked or the subsystem should
|
|
* be in shutdown before this routine is called.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsDeleteSubtree (
|
|
ACPI_HANDLE StartHandle)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_HANDLE ChildHandle;
|
|
ACPI_HANDLE ParentHandle;
|
|
ACPI_HANDLE NextChildHandle;
|
|
ACPI_HANDLE Dummy;
|
|
UINT32 Level;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("NsDeleteSubtree");
|
|
|
|
|
|
ParentHandle = StartHandle;
|
|
ChildHandle = 0;
|
|
Level = 1;
|
|
|
|
/*
|
|
* Traverse the tree of objects until we bubble back up
|
|
* to where we started.
|
|
*/
|
|
while (Level > 0)
|
|
{
|
|
/* Attempt to get the next object in this scope */
|
|
|
|
Status = AcpiGetNextObject (ACPI_TYPE_ANY, ParentHandle,
|
|
ChildHandle, &NextChildHandle);
|
|
|
|
ChildHandle = NextChildHandle;
|
|
|
|
/* Did we get a new object? */
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/* Check if this object has any children */
|
|
|
|
if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY, ChildHandle,
|
|
0, &Dummy)))
|
|
{
|
|
/*
|
|
* There is at least one child of this object,
|
|
* visit the object
|
|
*/
|
|
Level++;
|
|
ParentHandle = ChildHandle;
|
|
ChildHandle = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* No more children in this object, go back up to
|
|
* the object's parent
|
|
*/
|
|
Level--;
|
|
|
|
/* Delete all children now */
|
|
|
|
AcpiNsDeleteChildren (ChildHandle);
|
|
|
|
ChildHandle = ParentHandle;
|
|
Status = AcpiGetParent (ParentHandle, &ParentHandle);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Now delete the starting object, and we are done */
|
|
|
|
AcpiNsDeleteNode (ChildHandle);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsUnloadNameSpace
|
|
*
|
|
* PARAMETERS: Handle - Root of namespace subtree to be deleted
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Shrinks the namespace, typically in response to an undocking
|
|
* event. Deletes an entire subtree starting from (and
|
|
* including) the given handle.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsUnloadNamespace (
|
|
ACPI_HANDLE Handle)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("NsUnloadNameSpace");
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!AcpiGbl_RootNode)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_NAMESPACE);
|
|
}
|
|
|
|
if (!Handle)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* This function does the real work */
|
|
|
|
Status = AcpiNsDeleteSubtree (Handle);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
#endif
|
|
|