650 lines
21 KiB
C
650 lines
21 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: dsmethod - Parser/Interpreter interface - control method parsing
|
|
* $Revision: 89 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, 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.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#define __DSMETHOD_C__
|
|
|
|
#include "acpi.h"
|
|
#include "acparser.h"
|
|
#include "amlcode.h"
|
|
#include "acdispat.h"
|
|
#include "acinterp.h"
|
|
#include "acnamesp.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
|
ACPI_MODULE_NAME ("dsmethod")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsParseMethod
|
|
*
|
|
* PARAMETERS: ObjHandle - Node of the method
|
|
* Level - Current nesting level
|
|
* Context - Points to a method counter
|
|
* ReturnValue - Not used
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Call the parser and parse the AML that is
|
|
* associated with the method.
|
|
*
|
|
* MUTEX: Assumes parser is locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsParseMethod (
|
|
ACPI_HANDLE ObjHandle)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_PARSE_OBJECT *Op;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_OWNER_ID OwnerId;
|
|
ACPI_WALK_STATE *WalkState;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("DsParseMethod", ObjHandle);
|
|
|
|
|
|
/* Parameter Validation */
|
|
|
|
if (!ObjHandle)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_ENTRY);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Parsing [%4.4s] **** NamedObj=%p\n",
|
|
((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii, ObjHandle));
|
|
|
|
/* Extract the method object from the method Node */
|
|
|
|
Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_OBJECT);
|
|
}
|
|
|
|
/* Create a mutex for the method if there is a concurrency limit */
|
|
|
|
if ((ObjDesc->Method.Concurrency != INFINITE_CONCURRENCY) &&
|
|
(!ObjDesc->Method.Semaphore))
|
|
{
|
|
Status = AcpiOsCreateSemaphore (ObjDesc->Method.Concurrency,
|
|
ObjDesc->Method.Concurrency,
|
|
&ObjDesc->Method.Semaphore);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate a new parser op to be the root of the parsed
|
|
* method tree
|
|
*/
|
|
Op = AcpiPsAllocOp (AML_METHOD_OP);
|
|
if (!Op)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Init new op with the method name and pointer back to the Node */
|
|
|
|
AcpiPsSetName (Op, Node->Name.Integer);
|
|
Op->Common.Node = Node;
|
|
|
|
/*
|
|
* Get a new OwnerId for objects created by this method. Namespace
|
|
* objects (such as Operation Regions) can be created during the
|
|
* first pass parse.
|
|
*/
|
|
OwnerId = AcpiUtAllocateOwnerId (ACPI_OWNER_TYPE_METHOD);
|
|
ObjDesc->Method.OwningId = OwnerId;
|
|
|
|
/* Create and initialize a new walk state */
|
|
|
|
WalkState = AcpiDsCreateWalkState (OwnerId, NULL, NULL, NULL);
|
|
if (!WalkState)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Status = AcpiDsInitAmlWalk (WalkState, Op, Node, ObjDesc->Method.AmlStart,
|
|
ObjDesc->Method.AmlLength, NULL, NULL, 1);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiDsDeleteWalkState (WalkState);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Parse the method, first pass
|
|
*
|
|
* The first pass load is where newly declared named objects are
|
|
* added into the namespace. Actual evaluation of
|
|
* the named objects (what would be called a "second
|
|
* pass") happens during the actual execution of the
|
|
* method so that operands to the named objects can
|
|
* take on dynamic run-time values.
|
|
*/
|
|
Status = AcpiPsParseAml (WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
|
|
"**** [%4.4s] Parsed **** NamedObj=%p Op=%p\n",
|
|
((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii, ObjHandle, Op));
|
|
|
|
AcpiPsDeleteParseTree (Op);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsBeginMethodExecution
|
|
*
|
|
* PARAMETERS: MethodNode - Node of the method
|
|
* ObjDesc - The method object
|
|
* CallingMethodNode - Caller of this method (if non-null)
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Prepare a method for execution. Parses the method if necessary,
|
|
* increments the thread count, and waits at the method semaphore
|
|
* for clearance to execute.
|
|
*
|
|
* MUTEX: Locks/unlocks parser.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsBeginMethodExecution (
|
|
ACPI_NAMESPACE_NODE *MethodNode,
|
|
ACPI_OPERAND_OBJECT *ObjDesc,
|
|
ACPI_NAMESPACE_NODE *CallingMethodNode)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("DsBeginMethodExecution", MethodNode);
|
|
|
|
|
|
if (!MethodNode)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_ENTRY);
|
|
}
|
|
|
|
/*
|
|
* If there is a concurrency limit on this method, we need to
|
|
* obtain a unit from the method semaphore.
|
|
*/
|
|
if (ObjDesc->Method.Semaphore)
|
|
{
|
|
/*
|
|
* Allow recursive method calls, up to the reentrancy/concurrency
|
|
* limit imposed by the SERIALIZED rule and the SyncLevel method
|
|
* parameter.
|
|
*
|
|
* The point of this code is to avoid permanently blocking a
|
|
* thread that is making recursive method calls.
|
|
*/
|
|
if (MethodNode == CallingMethodNode)
|
|
{
|
|
if (ObjDesc->Method.ThreadCount >= ObjDesc->Method.Concurrency)
|
|
{
|
|
return_ACPI_STATUS (AE_AML_METHOD_LIMIT);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get a unit from the method semaphore. This releases the
|
|
* interpreter if we block
|
|
*/
|
|
Status = AcpiExSystemWaitSemaphore (ObjDesc->Method.Semaphore,
|
|
ACPI_WAIT_FOREVER);
|
|
}
|
|
|
|
/*
|
|
* Increment the method parse tree thread count since it has been
|
|
* reentered one more time (even if it is the same thread)
|
|
*/
|
|
ObjDesc->Method.ThreadCount++;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsCallControlMethod
|
|
*
|
|
* PARAMETERS: WalkState - Current state of the walk
|
|
* Op - Current Op to be walked
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Transfer execution to a called control method
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsCallControlMethod (
|
|
ACPI_THREAD_STATE *Thread,
|
|
ACPI_WALK_STATE *ThisWalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *MethodNode;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_WALK_STATE *NextWalkState;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("DsCallControlMethod", ThisWalkState);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Execute method %p, currentstate=%p\n",
|
|
ThisWalkState->PrevOp, ThisWalkState));
|
|
|
|
/*
|
|
* Get the namespace entry for the control method we are about to call
|
|
*/
|
|
MethodNode = ThisWalkState->MethodCallNode;
|
|
if (!MethodNode)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_ENTRY);
|
|
}
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (MethodNode);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_OBJECT);
|
|
}
|
|
|
|
/* Init for new method, wait on concurrency semaphore */
|
|
|
|
Status = AcpiDsBeginMethodExecution (MethodNode, ObjDesc,
|
|
ThisWalkState->MethodNode);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* 1) Parse: Create a new walk state for the preempting walk */
|
|
|
|
NextWalkState = AcpiDsCreateWalkState (ObjDesc->Method.OwningId,
|
|
Op, ObjDesc, NULL);
|
|
if (!NextWalkState)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Create and init a Root Node */
|
|
|
|
Op = AcpiPsCreateScopeOp ();
|
|
if (!Op)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
Status = AcpiDsInitAmlWalk (NextWalkState, Op, MethodNode,
|
|
ObjDesc->Method.AmlStart, ObjDesc->Method.AmlLength,
|
|
NULL, NULL, 1);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiDsDeleteWalkState (NextWalkState);
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Begin AML parse */
|
|
|
|
Status = AcpiPsParseAml (NextWalkState);
|
|
AcpiPsDeleteParseTree (Op);
|
|
|
|
/* 2) Execute: Create a new state for the preempting walk */
|
|
|
|
NextWalkState = AcpiDsCreateWalkState (ObjDesc->Method.OwningId,
|
|
NULL, ObjDesc, Thread);
|
|
if (!NextWalkState)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/*
|
|
* The resolved arguments were put on the previous walk state's operand
|
|
* stack. Operands on the previous walk state stack always
|
|
* start at index 0.
|
|
* Null terminate the list of arguments
|
|
*/
|
|
ThisWalkState->Operands [ThisWalkState->NumOperands] = NULL;
|
|
|
|
Status = AcpiDsInitAmlWalk (NextWalkState, NULL, MethodNode,
|
|
ObjDesc->Method.AmlStart, ObjDesc->Method.AmlLength,
|
|
&ThisWalkState->Operands[0], NULL, 3);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
/*
|
|
* Delete the operands on the previous walkstate operand stack
|
|
* (they were copied to new objects)
|
|
*/
|
|
for (i = 0; i < ObjDesc->Method.ParamCount; i++)
|
|
{
|
|
AcpiUtRemoveReference (ThisWalkState->Operands [i]);
|
|
ThisWalkState->Operands [i] = NULL;
|
|
}
|
|
|
|
/* Clear the operand stack */
|
|
|
|
ThisWalkState->NumOperands = 0;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"Starting nested execution, newstate=%p\n", NextWalkState));
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
|
|
/* On error, we must delete the new walk state */
|
|
|
|
Cleanup:
|
|
(void) AcpiDsTerminateControlMethod (NextWalkState);
|
|
AcpiDsDeleteWalkState (NextWalkState);
|
|
return_ACPI_STATUS (Status);
|
|
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsRestartControlMethod
|
|
*
|
|
* PARAMETERS: WalkState - State of the method when it was preempted
|
|
* Op - Pointer to new current op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Restart a method that was preempted
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsRestartControlMethod (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_OPERAND_OBJECT *ReturnDesc)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("DsRestartControlMethod", WalkState);
|
|
|
|
|
|
if (ReturnDesc)
|
|
{
|
|
if (WalkState->ReturnUsed)
|
|
{
|
|
/*
|
|
* Get the return value (if any) from the previous method.
|
|
* NULL if no return value
|
|
*/
|
|
Status = AcpiDsResultPush (ReturnDesc, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiUtRemoveReference (ReturnDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Delete the return value if it will not be used by the
|
|
* calling method
|
|
*/
|
|
AcpiUtRemoveReference (ReturnDesc);
|
|
}
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"Method=%p Return=%p ReturnUsed?=%X ResStack=%p State=%p\n",
|
|
WalkState->MethodCallOp, ReturnDesc, WalkState->ReturnUsed,
|
|
WalkState->Results, WalkState));
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsTerminateControlMethod
|
|
*
|
|
* PARAMETERS: WalkState - State of the method
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Terminate a control method. Delete everything that the method
|
|
* created, delete all locals and arguments, and delete the parse
|
|
* tree if requested.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsTerminateControlMethod (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *MethodNode;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("DsTerminateControlMethod", WalkState);
|
|
|
|
|
|
if (!WalkState)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* The current method object was saved in the walk state */
|
|
|
|
ObjDesc = WalkState->MethodDesc;
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Delete all arguments and locals */
|
|
|
|
AcpiDsMethodDataDeleteAll (WalkState);
|
|
|
|
/*
|
|
* Lock the parser while we terminate this method.
|
|
* If this is the last thread executing the method,
|
|
* we have additional cleanup to perform
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_PARSER);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Signal completion of the execution of this method if necessary */
|
|
|
|
if (WalkState->MethodDesc->Method.Semaphore)
|
|
{
|
|
Status = AcpiOsSignalSemaphore (
|
|
WalkState->MethodDesc->Method.Semaphore, 1);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not signal method semaphore\n"));
|
|
Status = AE_OK;
|
|
|
|
/* Ignore error and continue cleanup */
|
|
}
|
|
}
|
|
|
|
/* Decrement the thread count on the method parse tree */
|
|
|
|
WalkState->MethodDesc->Method.ThreadCount--;
|
|
if (!WalkState->MethodDesc->Method.ThreadCount)
|
|
{
|
|
/*
|
|
* There are no more threads executing this method. Perform
|
|
* additional cleanup.
|
|
*
|
|
* The method Node is stored in the walk state
|
|
*/
|
|
MethodNode = WalkState->MethodNode;
|
|
|
|
/*
|
|
* Delete any namespace entries created immediately underneath
|
|
* the method
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
if (MethodNode->Child)
|
|
{
|
|
AcpiNsDeleteNamespaceSubtree (MethodNode);
|
|
}
|
|
|
|
/*
|
|
* Delete any namespace entries created anywhere else within
|
|
* the namespace
|
|
*/
|
|
AcpiNsDeleteNamespaceByOwner (WalkState->MethodDesc->Method.OwningId);
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_PARSER);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|