/****************************************************************************** * * Module Name: psxface - Parser external interfaces * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2009, 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 __PSXFACE_C__ #include "acpi.h" #include "accommon.h" #include "acparser.h" #include "acdispat.h" #include "acinterp.h" #include "amlcode.h" #define _COMPONENT ACPI_PARSER ACPI_MODULE_NAME ("psxface") /* Local Prototypes */ static void AcpiPsStartTrace ( ACPI_EVALUATE_INFO *Info); static void AcpiPsStopTrace ( ACPI_EVALUATE_INFO *Info); static void AcpiPsUpdateParameterList ( ACPI_EVALUATE_INFO *Info, UINT16 Action); /******************************************************************************* * * FUNCTION: AcpiDebugTrace * * PARAMETERS: MethodName - Valid ACPI name string * DebugLevel - Optional level mask. 0 to use default * DebugLayer - Optional layer mask. 0 to use default * Flags - bit 1: one shot(1) or persistent(0) * * RETURN: Status * * DESCRIPTION: External interface to enable debug tracing during control * method execution * ******************************************************************************/ ACPI_STATUS AcpiDebugTrace ( char *Name, UINT32 DebugLevel, UINT32 DebugLayer, UINT32 Flags) { ACPI_STATUS Status; Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } /* TBDs: Validate name, allow full path or just nameseg */ AcpiGbl_TraceMethodName = *ACPI_CAST_PTR (UINT32, Name); AcpiGbl_TraceFlags = Flags; if (DebugLevel) { AcpiGbl_TraceDbgLevel = DebugLevel; } if (DebugLayer) { AcpiGbl_TraceDbgLayer = DebugLayer; } (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiPsStartTrace * * PARAMETERS: Info - Method info struct * * RETURN: None * * DESCRIPTION: Start control method execution trace * ******************************************************************************/ static void AcpiPsStartTrace ( ACPI_EVALUATE_INFO *Info) { ACPI_STATUS Status; ACPI_FUNCTION_ENTRY (); Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return; } if ((!AcpiGbl_TraceMethodName) || (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer)) { goto Exit; } AcpiGbl_OriginalDbgLevel = AcpiDbgLevel; AcpiGbl_OriginalDbgLayer = AcpiDbgLayer; AcpiDbgLevel = 0x00FFFFFF; AcpiDbgLayer = ACPI_UINT32_MAX; if (AcpiGbl_TraceDbgLevel) { AcpiDbgLevel = AcpiGbl_TraceDbgLevel; } if (AcpiGbl_TraceDbgLayer) { AcpiDbgLayer = AcpiGbl_TraceDbgLayer; } Exit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); } /******************************************************************************* * * FUNCTION: AcpiPsStopTrace * * PARAMETERS: Info - Method info struct * * RETURN: None * * DESCRIPTION: Stop control method execution trace * ******************************************************************************/ static void AcpiPsStopTrace ( ACPI_EVALUATE_INFO *Info) { ACPI_STATUS Status; ACPI_FUNCTION_ENTRY (); Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return; } if ((!AcpiGbl_TraceMethodName) || (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer)) { goto Exit; } /* Disable further tracing if type is one-shot */ if (AcpiGbl_TraceFlags & 1) { AcpiGbl_TraceMethodName = 0; AcpiGbl_TraceDbgLevel = 0; AcpiGbl_TraceDbgLayer = 0; } AcpiDbgLevel = AcpiGbl_OriginalDbgLevel; AcpiDbgLayer = AcpiGbl_OriginalDbgLayer; Exit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); } /******************************************************************************* * * FUNCTION: AcpiPsExecuteMethod * * PARAMETERS: Info - Method info block, contains: * Node - Method Node to execute * ObjDesc - Method object * Parameters - 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. * ParameterType - Type of Parameter list * ReturnObject - Where to put method's return value (if * any). If NULL, no value is returned. * PassNumber - Parse or execute pass * * RETURN: Status * * DESCRIPTION: Execute a control method * ******************************************************************************/ ACPI_STATUS AcpiPsExecuteMethod ( ACPI_EVALUATE_INFO *Info) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *Op; ACPI_WALK_STATE *WalkState; ACPI_FUNCTION_TRACE (PsExecuteMethod); /* Validate the Info and method Node */ if (!Info || !Info->ResolvedNode) { return_ACPI_STATUS (AE_NULL_ENTRY); } /* Init for new method, wait on concurrency semaphore */ Status = AcpiDsBeginMethodExecution (Info->ResolvedNode, Info->ObjDesc, NULL); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * The caller "owns" the parameters, so give each one an extra reference */ AcpiPsUpdateParameterList (Info, REF_INCREMENT); /* Begin tracing if requested */ AcpiPsStartTrace (Info); /* * Execute the method. Performs parse simultaneously */ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", Info->ResolvedNode->Name.Ascii, Info->ResolvedNode, Info->ObjDesc)); /* Create and init a Root Node */ Op = AcpiPsCreateScopeOp (); if (!Op) { Status = AE_NO_MEMORY; goto Cleanup; } /* Create and initialize a new walk state */ Info->PassNumber = ACPI_IMODE_EXECUTE; WalkState = AcpiDsCreateWalkState ( Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL); if (!WalkState) { Status = AE_NO_MEMORY; goto Cleanup; } Status = AcpiDsInitAmlWalk (WalkState, Op, Info->ResolvedNode, Info->ObjDesc->Method.AmlStart, Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber); if (ACPI_FAILURE (Status)) { AcpiDsDeleteWalkState (WalkState); goto Cleanup; } if (Info->ObjDesc->Method.Flags & AOPOBJ_MODULE_LEVEL) { WalkState->ParseFlags |= ACPI_PARSE_MODULE_LEVEL; } /* Invoke an internal method if necessary */ if (Info->ObjDesc->Method.MethodFlags & AML_METHOD_INTERNAL_ONLY) { Status = Info->ObjDesc->Method.Implementation (WalkState); Info->ReturnObject = WalkState->ReturnDesc; /* Cleanup states */ AcpiDsScopeStackClear (WalkState); AcpiPsCleanupScope (&WalkState->ParserState); AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState); AcpiDsDeleteWalkState (WalkState); goto Cleanup; } /* * Start method evaluation with an implicit return of zero. This is done * for Windows compatibility. */ if (AcpiGbl_EnableInterpreterSlack) { WalkState->ImplicitReturnObj = AcpiUtCreateIntegerObject ((UINT64) 0); if (!WalkState->ImplicitReturnObj) { Status = AE_NO_MEMORY; AcpiDsDeleteWalkState (WalkState); goto Cleanup; } } /* Parse the AML */ Status = AcpiPsParseAml (WalkState); /* WalkState was deleted by ParseAml */ Cleanup: AcpiPsDeleteParseTree (Op); /* End optional tracing */ AcpiPsStopTrace (Info); /* Take away the extra reference that we gave the parameters above */ AcpiPsUpdateParameterList (Info, REF_DECREMENT); /* Exit now if error above */ if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * If the method has returned an object, signal this to the caller with * a control exception code */ if (Info->ReturnObject) { ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", Info->ReturnObject)); ACPI_DUMP_STACK_ENTRY (Info->ReturnObject); Status = AE_CTRL_RETURN_VALUE; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiPsUpdateParameterList * * PARAMETERS: Info - See ACPI_EVALUATE_INFO * (Used: ParameterType and Parameters) * Action - Add or Remove reference * * RETURN: Status * * DESCRIPTION: Update reference count on all method parameter objects * ******************************************************************************/ static void AcpiPsUpdateParameterList ( ACPI_EVALUATE_INFO *Info, UINT16 Action) { UINT32 i; if (Info->Parameters) { /* Update reference count for each parameter */ for (i = 0; Info->Parameters[i]; i++) { /* Ignore errors, just do them all */ (void) AcpiUtUpdateObjectReference (Info->Parameters[i], Action); } } }