| Current Path : /sys/contrib/dev/acpica/namespace/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/contrib/dev/acpica/namespace/nsload.c |
/******************************************************************************
*
* Module Name: nsload - namespace loading/expanding/contracting procedures
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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 <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acdispat.h>
#include <contrib/dev/acpica/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