0065eb1222
keeps changing, so to reduce repository thrash everything has been moved into a single directory. (repo copy involved)
664 lines
21 KiB
C
664 lines
21 KiB
C
/*******************************************************************************
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*
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* Module Name: nseval - Object evaluation interfaces -- includes control
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* method lookup and execution.
|
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* $Revision: 91 $
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*
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******************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp.
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* All rights reserved.
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*
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* 2. License
|
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*
|
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* 2.1. This is your license from Intel Corp. under its intellectual property
|
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* rights. You may have additional license terms from the party that provided
|
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* you this software, covering your right to use that party's intellectual
|
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
|
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
|
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* base code distributed originally by Intel ("Original Intel Code") to copy,
|
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* make derivatives, distribute, use and display any portion of the Covered
|
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
|
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
|
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* solely to the minimum extent necessary to exercise the above copyright
|
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* license, and in no event shall the patent license extend to any additions
|
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
|
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
|
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* 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.
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|
*
|
|
* 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
|
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* 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
|
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* provision in the documentation and/or other materials provided with the
|
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
|
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
|
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* 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
|
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
|
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
|
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* 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
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
|
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* PARTICULAR PURPOSE.
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*
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* 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
|
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
|
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
|
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
|
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* software or system incorporating such software without first obtaining any
|
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* 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
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* 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
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* any of its subsidiaries will export/re-export any technical data, process,
|
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* software, or service, directly or indirectly, to any country for which the
|
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* United States government or any agency thereof requires an export license,
|
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __NSEVAL_C__
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#include "acpi.h"
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#include "amlcode.h"
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#include "acparser.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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|
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#define _COMPONENT ACPI_NAMESPACE
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MODULE_NAME ("nseval")
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|
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsEvaluateRelative
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*
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|
* PARAMETERS: Handle - The relative containing object
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* *Pathname - Name of method to execute, If NULL, the
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* handle is the object to execute
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* **Params - List of parameters to pass to the method,
|
|
* terminated by NULL. Params itself may be
|
|
* NULL if no parameters are being passed.
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* *ReturnObject - Where to put method's return value (if
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* any). If NULL, no value is returned.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Find and execute the requested method using the handle as a
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* scope
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*
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* MUTEX: Locks Namespace
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*
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******************************************************************************/
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|
|
ACPI_STATUS
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AcpiNsEvaluateRelative (
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ACPI_NAMESPACE_NODE *Handle,
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NATIVE_CHAR *Pathname,
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ACPI_OPERAND_OBJECT **Params,
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|
ACPI_OPERAND_OBJECT **ReturnObject)
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|
{
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|
ACPI_NAMESPACE_NODE *PrefixNode;
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node = NULL;
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NATIVE_CHAR *InternalPath = NULL;
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ACPI_GENERIC_STATE ScopeInfo;
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|
|
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FUNCTION_TRACE ("NsEvaluateRelative");
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|
|
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/*
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* Must have a valid object handle
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|
*/
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if (!Handle)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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|
}
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|
|
|
/* Build an internal name string for the method */
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|
Status = AcpiNsInternalizeName (Pathname, &InternalPath);
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if (ACPI_FAILURE (Status))
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|
{
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|
return_ACPI_STATUS (Status);
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|
}
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|
|
/* Get the prefix handle and Node */
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AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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|
|
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PrefixNode = AcpiNsConvertHandleToEntry (Handle);
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if (!PrefixNode)
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{
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|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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Status = AE_BAD_PARAMETER;
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|
goto Cleanup;
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|
}
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|
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|
/* Lookup the name in the namespace */
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|
ScopeInfo.Scope.Node = PrefixNode;
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Status = AcpiNsLookup (&ScopeInfo, InternalPath, ACPI_TYPE_ANY,
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IMODE_EXECUTE, NS_NO_UPSEARCH, NULL,
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&Node);
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AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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|
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if (ACPI_FAILURE (Status))
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{
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DEBUG_PRINTP (ACPI_INFO, ("Object [%s] not found [%s]\n",
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Pathname, AcpiUtFormatException (Status)));
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goto Cleanup;
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|
}
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|
|
|
/*
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* Now that we have a handle to the object, we can attempt
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* to evaluate it.
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*/
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DEBUG_PRINTP (ACPI_INFO, ("%s [%p] Value %p\n",
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Pathname, Node, Node->Object));
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Status = AcpiNsEvaluateByHandle (Node, Params, ReturnObject);
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DEBUG_PRINTP (ACPI_INFO, ("*** Completed eval of object %s ***\n",
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Pathname));
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Cleanup:
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AcpiUtFree (InternalPath);
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return_ACPI_STATUS (Status);
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}
|
|
|
|
|
|
/*******************************************************************************
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*
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* FUNCTION: AcpiNsEvaluateByName
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*
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* PARAMETERS: Pathname - Fully qualified pathname to the object
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|
* *ReturnObject - Where to put method's return value (if
|
|
* any). If NULL, no value is returned.
|
|
* **Params - List of parameters to pass to the method,
|
|
* terminated by NULL. Params itself may be
|
|
* NULL if no parameters are being passed.
|
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*
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* RETURN: Status
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|
*
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|
* DESCRIPTION: Find and execute the requested method passing the given
|
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* parameters
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|
*
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|
* MUTEX: Locks Namespace
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*
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******************************************************************************/
|
|
|
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ACPI_STATUS
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AcpiNsEvaluateByName (
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NATIVE_CHAR *Pathname,
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ACPI_OPERAND_OBJECT **Params,
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ACPI_OPERAND_OBJECT **ReturnObject)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node = NULL;
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NATIVE_CHAR *InternalPath = NULL;
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|
|
|
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FUNCTION_TRACE ("NsEvaluateByName");
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|
|
|
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/* Build an internal name string for the method */
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|
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Status = AcpiNsInternalizeName (Pathname, &InternalPath);
|
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
|
|
|
|
AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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|
|
|
/* Lookup the name in the namespace */
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|
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Status = AcpiNsLookup (NULL, InternalPath, ACPI_TYPE_ANY,
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IMODE_EXECUTE, NS_NO_UPSEARCH, NULL,
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&Node);
|
|
|
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AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
if (ACPI_FAILURE (Status))
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{
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DEBUG_PRINTP (ACPI_INFO, ("Object at [%s] was not found, status=%.4X\n",
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Pathname, Status));
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goto Cleanup;
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}
|
|
|
|
/*
|
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* Now that we have a handle to the object, we can attempt
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* to evaluate it.
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|
*/
|
|
|
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DEBUG_PRINTP (ACPI_INFO, ("%s [%p] Value %p\n",
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Pathname, Node, Node->Object));
|
|
|
|
Status = AcpiNsEvaluateByHandle (Node, Params, ReturnObject);
|
|
|
|
DEBUG_PRINTP (ACPI_INFO, ("*** Completed eval of object %s ***\n",
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Pathname));
|
|
|
|
|
|
Cleanup:
|
|
|
|
/* Cleanup */
|
|
|
|
if (InternalPath)
|
|
{
|
|
AcpiUtFree (InternalPath);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsEvaluateByHandle
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|
*
|
|
* PARAMETERS: Handle - Method Node to execute
|
|
* **Params - List of parameters to pass to the method,
|
|
* terminated by NULL. Params itself may be
|
|
* NULL if no parameters are being passed.
|
|
* *ReturnObject - Where to put method's return value (if
|
|
* any). If NULL, no value is returned.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute the requested method passing the given parameters
|
|
*
|
|
* MUTEX: Locks Namespace
|
|
*
|
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******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsEvaluateByHandle (
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|
ACPI_NAMESPACE_NODE *Handle,
|
|
ACPI_OPERAND_OBJECT **Params,
|
|
ACPI_OPERAND_OBJECT **ReturnObject)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *LocalReturnObject;
|
|
|
|
|
|
FUNCTION_TRACE ("NsEvaluateByHandle");
|
|
|
|
|
|
/* Check if namespace has been initialized */
|
|
|
|
if (!AcpiGbl_RootNode)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_NAMESPACE);
|
|
}
|
|
|
|
/* Parameter Validation */
|
|
|
|
if (!Handle)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (ReturnObject)
|
|
{
|
|
/* Initialize the return value to an invalid object */
|
|
|
|
*ReturnObject = NULL;
|
|
}
|
|
|
|
/* Get the prefix handle and Node */
|
|
|
|
AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
Node = AcpiNsConvertHandleToEntry (Handle);
|
|
if (!Node)
|
|
{
|
|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
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return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
|
|
/*
|
|
* Two major cases here:
|
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* 1) The object is an actual control method -- execute it.
|
|
* 2) The object is not a method -- just return it's current
|
|
* value
|
|
*
|
|
* In both cases, the namespace is unlocked by the
|
|
* AcpiNs* procedure
|
|
*/
|
|
if (AcpiNsGetType (Node) == ACPI_TYPE_METHOD)
|
|
{
|
|
/*
|
|
* Case 1) We have an actual control method to execute
|
|
*/
|
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Status = AcpiNsExecuteControlMethod (Node, Params,
|
|
&LocalReturnObject);
|
|
}
|
|
|
|
else
|
|
{
|
|
/*
|
|
* Case 2) Object is NOT a method, just return its
|
|
* current value
|
|
*/
|
|
Status = AcpiNsGetObjectValue (Node, &LocalReturnObject);
|
|
}
|
|
|
|
|
|
/*
|
|
* Check if there is a return value on the stack that must
|
|
* be dealt with
|
|
*/
|
|
if (Status == AE_CTRL_RETURN_VALUE)
|
|
{
|
|
/*
|
|
* If the Method returned a value and the caller
|
|
* provided a place to store a returned value, Copy
|
|
* the returned value to the object descriptor provided
|
|
* by the caller.
|
|
*/
|
|
if (ReturnObject)
|
|
{
|
|
/*
|
|
* Valid return object, copy the pointer to
|
|
* the returned object
|
|
*/
|
|
*ReturnObject = LocalReturnObject;
|
|
}
|
|
|
|
|
|
/* Map AE_RETURN_VALUE to AE_OK, we are done with it */
|
|
|
|
if (Status == AE_CTRL_RETURN_VALUE)
|
|
{
|
|
Status = AE_OK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Namespace was unlocked by the handling AcpiNs* function,
|
|
* so we just return
|
|
*/
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsExecuteControlMethod
|
|
*
|
|
* PARAMETERS: MethodNode - The object/method
|
|
* **Params - List of parameters to pass to the method,
|
|
* terminated by NULL. Params itself may be
|
|
* NULL if no parameters are being passed.
|
|
* **ReturnObjDesc - List of result objects to be returned
|
|
* from the method.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute the requested method passing the given parameters
|
|
*
|
|
* MUTEX: Assumes namespace is locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsExecuteControlMethod (
|
|
ACPI_NAMESPACE_NODE *MethodNode,
|
|
ACPI_OPERAND_OBJECT **Params,
|
|
ACPI_OPERAND_OBJECT **ReturnObjDesc)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
|
|
|
|
FUNCTION_TRACE ("NsExecuteControlMethod");
|
|
|
|
|
|
/* Verify that there is a method associated with this object */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (MethodNode);
|
|
if (!ObjDesc)
|
|
{
|
|
DEBUG_PRINTP (ACPI_ERROR, ("No attached method object\n"));
|
|
|
|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (AE_ERROR);
|
|
}
|
|
|
|
|
|
DEBUG_PRINTP (ACPI_INFO, ("Control method at Offset %x Length %lx]\n",
|
|
ObjDesc->Method.Pcode + 1, ObjDesc->Method.PcodeLength - 1));
|
|
|
|
DUMP_PATHNAME (MethodNode, "NsExecuteControlMethod: Executing",
|
|
TRACE_NAMES, _COMPONENT);
|
|
|
|
DEBUG_PRINTP (TRACE_NAMES, ("At offset %8XH\n", ObjDesc->Method.Pcode + 1));
|
|
|
|
|
|
/*
|
|
* Unlock the namespace before execution. This allows namespace access
|
|
* via the external Acpi* interfaces while a method is being executed.
|
|
* However, any namespace deletion must acquire both the namespace and
|
|
* interpreter locks to ensure that no thread is using the portion of the
|
|
* namespace that is being deleted.
|
|
*/
|
|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
/*
|
|
* Execute the method via the interpreter
|
|
*/
|
|
Status = AcpiExExecuteMethod (MethodNode, Params, ReturnObjDesc);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetObjectValue
|
|
*
|
|
* PARAMETERS: Node - The object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Return the current value of the object
|
|
*
|
|
* MUTEX: Assumes namespace is locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsGetObjectValue (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_OPERAND_OBJECT **ReturnObjDesc)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT *ValDesc;
|
|
|
|
|
|
FUNCTION_TRACE ("NsGetObjectValue");
|
|
|
|
|
|
/*
|
|
* We take the value from certain objects directly
|
|
*/
|
|
|
|
if ((Node->Type == ACPI_TYPE_PROCESSOR) ||
|
|
(Node->Type == ACPI_TYPE_POWER))
|
|
{
|
|
/*
|
|
* Create a Reference object to contain the object
|
|
*/
|
|
ObjDesc = AcpiUtCreateInternalObject (Node->Type);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* Get the attached object
|
|
*/
|
|
|
|
ValDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ValDesc)
|
|
{
|
|
Status = AE_NULL_OBJECT;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* Just copy from the original to the return object
|
|
*
|
|
* TBD: [Future] - need a low-level object copy that handles
|
|
* the reference count automatically. (Don't want to copy it)
|
|
*/
|
|
|
|
MEMCPY (ObjDesc, ValDesc, sizeof (ACPI_OPERAND_OBJECT));
|
|
ObjDesc->Common.ReferenceCount = 1;
|
|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
}
|
|
|
|
|
|
/*
|
|
* Other objects require a reference object wrapper which we
|
|
* then attempt to resolve.
|
|
*/
|
|
else
|
|
{
|
|
/* Create an Reference object to contain the object */
|
|
|
|
ObjDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REFERENCE);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Construct a descriptor pointing to the name */
|
|
|
|
ObjDesc->Reference.Opcode = (UINT8) AML_NAME_OP;
|
|
ObjDesc->Reference.Object = (void *) Node;
|
|
|
|
/*
|
|
* Use ResolveToValue() to get the associated value. This call
|
|
* always deletes ObjDesc (allocated above).
|
|
*
|
|
* NOTE: we can get away with passing in NULL for a walk state
|
|
* because ObjDesc is guaranteed to not be a reference to either
|
|
* a method local or a method argument
|
|
*
|
|
* Even though we do not directly invoke the interpreter
|
|
* for this, we must enter it because we could access an opregion.
|
|
* The opregion access code assumes that the interpreter
|
|
* is locked.
|
|
*
|
|
* We must release the namespace lock before entering the
|
|
* intepreter.
|
|
*/
|
|
|
|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
Status = AcpiExEnterInterpreter ();
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Status = AcpiExResolveToValue (&ObjDesc, NULL);
|
|
|
|
AcpiExExitInterpreter ();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If AcpiExResolveToValue() succeeded, the return value was
|
|
* placed in ObjDesc.
|
|
*/
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Status = AE_CTRL_RETURN_VALUE;
|
|
|
|
*ReturnObjDesc = ObjDesc;
|
|
DEBUG_PRINTP (ACPI_INFO, ("Returning obj %p\n", *ReturnObjDesc));
|
|
}
|
|
|
|
/* Namespace is unlocked */
|
|
|
|
return_ACPI_STATUS (Status);
|
|
|
|
|
|
UnlockAndExit:
|
|
|
|
/* Unlock the namespace */
|
|
|
|
AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|