356 lines
9.8 KiB
C
356 lines
9.8 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: nsload - namespace loading/expanding/contracting procedures
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2013, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#define __NSLOAD_C__
|
|
|
|
#include "acpi.h"
|
|
#include "accommon.h"
|
|
#include "acnamesp.h"
|
|
#include "acdispat.h"
|
|
#include "actables.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME ("nsload")
|
|
|
|
/* Local prototypes */
|
|
|
|
#ifdef ACPI_FUTURE_IMPLEMENTATION
|
|
ACPI_STATUS
|
|
AcpiNsUnloadNamespace (
|
|
ACPI_HANDLE Handle);
|
|
|
|
static ACPI_STATUS
|
|
AcpiNsDeleteSubtree (
|
|
ACPI_HANDLE StartHandle);
|
|
#endif
|
|
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsLoadTable
|
|
*
|
|
* PARAMETERS: TableIndex - Index for table to be loaded
|
|
* Node - Owning NS node
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load one ACPI table into the namespace
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsLoadTable (
|
|
UINT32 TableIndex,
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (NsLoadTable);
|
|
|
|
|
|
/*
|
|
* 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!
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* If table already loaded into namespace, just return */
|
|
|
|
if (AcpiTbIsTableLoaded (TableIndex))
|
|
{
|
|
Status = AE_ALREADY_EXISTS;
|
|
goto Unlock;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"**** Loading table into namespace ****\n"));
|
|
|
|
Status = AcpiTbAllocateOwnerId (TableIndex);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Unlock;
|
|
}
|
|
|
|
Status = AcpiNsParseTable (TableIndex, Node);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
AcpiTbSetTableLoadedFlag (TableIndex, TRUE);
|
|
}
|
|
else
|
|
{
|
|
(void) AcpiTbReleaseOwnerId (TableIndex);
|
|
}
|
|
|
|
Unlock:
|
|
(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 (TableIndex, Node);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"**** Completed Table Method Parsing and Object Initialization\n"));
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
#ifdef ACPI_OBSOLETE_FUNCTIONS
|
|
/*******************************************************************************
|
|
*
|
|
* 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_ERROR ((AE_INFO, "DSDT is not in memory"));
|
|
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_ID_DSDT);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Ignore exceptions from these */
|
|
|
|
(void) AcpiNsLoadTableByType (ACPI_TABLE_ID_SSDT);
|
|
(void) AcpiNsLoadTableByType (ACPI_TABLE_ID_PSDT);
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
|
|
"ACPI Namespace successfully loaded at root %p\n",
|
|
AcpiGbl_RootNode));
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
#endif
|
|
|
|
#ifdef ACPI_FUTURE_IMPLEMENTATION
|
|
/*******************************************************************************
|
|
*
|
|
* 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static 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 = NULL;
|
|
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,
|
|
NULL, &Dummy)))
|
|
{
|
|
/*
|
|
* There is at least one child of this object,
|
|
* visit the object
|
|
*/
|
|
Level++;
|
|
ParentHandle = ChildHandle;
|
|
ChildHandle = NULL;
|
|
}
|
|
}
|
|
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 */
|
|
|
|
AcpiNsRemoveNode (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
|
|
#endif
|