forked from KolibriOS/kolibrios
516 lines
16 KiB
C
516 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: psxface - Parser external interfaces
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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 - 2010, 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
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* 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
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* 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,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* 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
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* 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
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* 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
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* compliance with all laws, regulations, orders, or other restrictions of the
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* 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 __PSXFACE_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acparser.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "actables.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_PARSER
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ACPI_MODULE_NAME ("psxface")
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/* Local Prototypes */
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static void
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AcpiPsStartTrace (
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ACPI_EVALUATE_INFO *Info);
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static void
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AcpiPsStopTrace (
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ACPI_EVALUATE_INFO *Info);
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static void
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AcpiPsUpdateParameterList (
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ACPI_EVALUATE_INFO *Info,
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UINT16 Action);
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/*******************************************************************************
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*
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* FUNCTION: AcpiDebugTrace
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*
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* PARAMETERS: MethodName - Valid ACPI name string
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* DebugLevel - Optional level mask. 0 to use default
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* DebugLayer - Optional layer mask. 0 to use default
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* Flags - bit 1: one shot(1) or persistent(0)
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*
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* RETURN: Status
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*
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* DESCRIPTION: External interface to enable debug tracing during control
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* method execution
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDebugTrace (
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char *Name,
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UINT32 DebugLevel,
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UINT32 DebugLayer,
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UINT32 Flags)
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{
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ACPI_STATUS Status;
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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/* TBDs: Validate name, allow full path or just nameseg */
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AcpiGbl_TraceMethodName = *ACPI_CAST_PTR (UINT32, Name);
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AcpiGbl_TraceFlags = Flags;
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if (DebugLevel)
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{
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AcpiGbl_TraceDbgLevel = DebugLevel;
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}
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if (DebugLayer)
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{
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AcpiGbl_TraceDbgLayer = DebugLayer;
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}
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(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsStartTrace
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*
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* PARAMETERS: Info - Method info struct
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*
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* RETURN: None
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*
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* DESCRIPTION: Start control method execution trace
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*
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******************************************************************************/
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static void
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AcpiPsStartTrace (
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ACPI_EVALUATE_INFO *Info)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_ENTRY ();
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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if ((!AcpiGbl_TraceMethodName) ||
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(AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer))
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{
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goto Exit;
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}
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AcpiGbl_OriginalDbgLevel = AcpiDbgLevel;
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AcpiGbl_OriginalDbgLayer = AcpiDbgLayer;
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AcpiDbgLevel = 0x00FFFFFF;
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AcpiDbgLayer = ACPI_UINT32_MAX;
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if (AcpiGbl_TraceDbgLevel)
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{
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AcpiDbgLevel = AcpiGbl_TraceDbgLevel;
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}
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if (AcpiGbl_TraceDbgLayer)
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{
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AcpiDbgLayer = AcpiGbl_TraceDbgLayer;
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}
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Exit:
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(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsStopTrace
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*
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* PARAMETERS: Info - Method info struct
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*
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* RETURN: None
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*
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* DESCRIPTION: Stop control method execution trace
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*
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******************************************************************************/
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static void
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AcpiPsStopTrace (
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ACPI_EVALUATE_INFO *Info)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_ENTRY ();
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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if ((!AcpiGbl_TraceMethodName) ||
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(AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer))
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{
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goto Exit;
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}
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/* Disable further tracing if type is one-shot */
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if (AcpiGbl_TraceFlags & 1)
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{
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AcpiGbl_TraceMethodName = 0;
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AcpiGbl_TraceDbgLevel = 0;
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AcpiGbl_TraceDbgLayer = 0;
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}
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AcpiDbgLevel = AcpiGbl_OriginalDbgLevel;
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AcpiDbgLayer = AcpiGbl_OriginalDbgLayer;
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Exit:
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(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsExecuteMethod
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*
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* PARAMETERS: Info - Method info block, contains:
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* Node - Method Node to execute
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* ObjDesc - Method object
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* Parameters - List of parameters to pass to the method,
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* terminated by NULL. Params itself may be
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* 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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* ParameterType - Type of Parameter list
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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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* PassNumber - Parse or execute pass
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute a control method
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiPsExecuteMethod (
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ACPI_EVALUATE_INFO *Info)
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{
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ACPI_STATUS Status;
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ACPI_PARSE_OBJECT *Op;
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ACPI_WALK_STATE *WalkState;
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ACPI_FUNCTION_TRACE (PsExecuteMethod);
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/* Quick validation of DSDT header */
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AcpiTbCheckDsdtHeader ();
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/* Validate the Info and method Node */
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if (!Info || !Info->ResolvedNode)
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{
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return_ACPI_STATUS (AE_NULL_ENTRY);
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}
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/* Init for new method, wait on concurrency semaphore */
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Status = AcpiDsBeginMethodExecution (Info->ResolvedNode, Info->ObjDesc, NULL);
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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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/*
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* The caller "owns" the parameters, so give each one an extra reference
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*/
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AcpiPsUpdateParameterList (Info, REF_INCREMENT);
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/* Begin tracing if requested */
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AcpiPsStartTrace (Info);
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/*
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* Execute the method. Performs parse simultaneously
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
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"**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
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Info->ResolvedNode->Name.Ascii, Info->ResolvedNode, Info->ObjDesc));
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/* Create and init a Root Node */
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Op = AcpiPsCreateScopeOp ();
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if (!Op)
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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/* Create and initialize a new walk state */
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Info->PassNumber = ACPI_IMODE_EXECUTE;
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WalkState = AcpiDsCreateWalkState (
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Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL);
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if (!WalkState)
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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Status = AcpiDsInitAmlWalk (WalkState, Op, Info->ResolvedNode,
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Info->ObjDesc->Method.AmlStart,
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Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber);
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if (ACPI_FAILURE (Status))
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{
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AcpiDsDeleteWalkState (WalkState);
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goto Cleanup;
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}
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if (Info->ObjDesc->Method.Flags & AOPOBJ_MODULE_LEVEL)
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{
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WalkState->ParseFlags |= ACPI_PARSE_MODULE_LEVEL;
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}
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/* Invoke an internal method if necessary */
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if (Info->ObjDesc->Method.MethodFlags & AML_METHOD_INTERNAL_ONLY)
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{
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Status = Info->ObjDesc->Method.Extra.Implementation (WalkState);
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Info->ReturnObject = WalkState->ReturnDesc;
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/* Cleanup states */
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AcpiDsScopeStackClear (WalkState);
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AcpiPsCleanupScope (&WalkState->ParserState);
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AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState);
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AcpiDsDeleteWalkState (WalkState);
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goto Cleanup;
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}
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/*
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* Start method evaluation with an implicit return of zero. This is done
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* for Windows compatibility.
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*/
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if (AcpiGbl_EnableInterpreterSlack)
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{
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WalkState->ImplicitReturnObj =
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AcpiUtCreateIntegerObject ((UINT64) 0);
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if (!WalkState->ImplicitReturnObj)
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{
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Status = AE_NO_MEMORY;
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AcpiDsDeleteWalkState (WalkState);
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goto Cleanup;
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}
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}
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/* Parse the AML */
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Status = AcpiPsParseAml (WalkState);
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/* WalkState was deleted by ParseAml */
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Cleanup:
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AcpiPsDeleteParseTree (Op);
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/* End optional tracing */
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AcpiPsStopTrace (Info);
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/* Take away the extra reference that we gave the parameters above */
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AcpiPsUpdateParameterList (Info, REF_DECREMENT);
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/* Exit now if error above */
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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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/*
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* If the method has returned an object, signal this to the caller with
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* a control exception code
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*/
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if (Info->ReturnObject)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
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Info->ReturnObject));
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ACPI_DUMP_STACK_ENTRY (Info->ReturnObject);
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Status = AE_CTRL_RETURN_VALUE;
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}
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsUpdateParameterList
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*
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* PARAMETERS: Info - See ACPI_EVALUATE_INFO
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* (Used: ParameterType and Parameters)
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* Action - Add or Remove reference
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*
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* RETURN: Status
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*
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* DESCRIPTION: Update reference count on all method parameter objects
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*
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******************************************************************************/
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static void
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AcpiPsUpdateParameterList (
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ACPI_EVALUATE_INFO *Info,
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UINT16 Action)
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{
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UINT32 i;
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if (Info->Parameters)
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{
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/* Update reference count for each parameter */
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for (i = 0; Info->Parameters[i]; i++)
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{
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/* Ignore errors, just do them all */
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(void) AcpiUtUpdateObjectReference (Info->Parameters[i], Action);
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}
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}
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}
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