/****************************************************************************** * * Module Name: nsparse - namespace interface to AML parser * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2022, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include #include #include #include #include #include #include #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME ("nsparse") /******************************************************************************* * * FUNCTION: NsExecuteTable * * PARAMETERS: TableDesc - An ACPI table descriptor for table to parse * StartNode - Where to enter the table into the namespace * * RETURN: Status * * DESCRIPTION: Load ACPI/AML table by executing the entire table as a single * large control method. * * NOTE: The point of this is to execute any module-level code in-place * as the table is parsed. Some AML code depends on this behavior. * * It is a run-time option at this time, but will eventually become * the default. * * Note: This causes the table to only have a single-pass parse. * However, this is compatible with other ACPI implementations. * ******************************************************************************/ ACPI_STATUS AcpiNsExecuteTable ( UINT32 TableIndex, ACPI_NAMESPACE_NODE *StartNode) { ACPI_STATUS Status; ACPI_TABLE_HEADER *Table; ACPI_OWNER_ID OwnerId; ACPI_EVALUATE_INFO *Info = NULL; UINT32 AmlLength; UINT8 *AmlStart; ACPI_OPERAND_OBJECT *MethodObj = NULL; ACPI_FUNCTION_TRACE (NsExecuteTable); Status = AcpiGetTableByIndex (TableIndex, &Table); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Table must consist of at least a complete header */ if (Table->Length < sizeof (ACPI_TABLE_HEADER)) { return_ACPI_STATUS (AE_BAD_HEADER); } AmlStart = (UINT8 *) Table + sizeof (ACPI_TABLE_HEADER); AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER); Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Create, initialize, and link a new temporary method object */ MethodObj = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); if (!MethodObj) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Allocate the evaluation information block */ Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); if (!Info) { Status = AE_NO_MEMORY; goto Cleanup; } ACPI_DEBUG_PRINT_RAW ((ACPI_DB_PARSE, "%s: Create table pseudo-method for [%4.4s] @%p, method %p\n", ACPI_GET_FUNCTION_NAME, Table->Signature, Table, MethodObj)); MethodObj->Method.AmlStart = AmlStart; MethodObj->Method.AmlLength = AmlLength; MethodObj->Method.OwnerId = OwnerId; MethodObj->Method.InfoFlags |= ACPI_METHOD_MODULE_LEVEL; Info->PassNumber = ACPI_IMODE_EXECUTE; Info->Node = StartNode; Info->ObjDesc = MethodObj; Info->NodeFlags = Info->Node->Flags; Info->FullPathname = AcpiNsGetNormalizedPathname (Info->Node, TRUE); if (!Info->FullPathname) { Status = AE_NO_MEMORY; goto Cleanup; } /* Optional object evaluation log */ ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EVALUATION, "%-26s: (Definition Block level)\n", "Module-level evaluation")); Status = AcpiPsExecuteTable (Info); /* Optional object evaluation log */ ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EVALUATION, "%-26s: (Definition Block level)\n", "Module-level complete")); Cleanup: if (Info) { ACPI_FREE (Info->FullPathname); Info->FullPathname = NULL; } ACPI_FREE (Info); AcpiUtRemoveReference (MethodObj); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: NsOneCompleteParse * * PARAMETERS: PassNumber - 1 or 2 * TableDesc - The table to be parsed. * * RETURN: Status * * DESCRIPTION: Perform one complete parse of an ACPI/AML table. * ******************************************************************************/ ACPI_STATUS AcpiNsOneCompleteParse ( UINT32 PassNumber, UINT32 TableIndex, ACPI_NAMESPACE_NODE *StartNode) { ACPI_PARSE_OBJECT *ParseRoot; ACPI_STATUS Status; UINT32 AmlLength; UINT8 *AmlStart; ACPI_WALK_STATE *WalkState; ACPI_TABLE_HEADER *Table; ACPI_OWNER_ID OwnerId; ACPI_FUNCTION_TRACE (NsOneCompleteParse); Status = AcpiGetTableByIndex (TableIndex, &Table); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Table must consist of at least a complete header */ if (Table->Length < sizeof (ACPI_TABLE_HEADER)) { return_ACPI_STATUS (AE_BAD_HEADER); } AmlStart = (UINT8 *) Table + sizeof (ACPI_TABLE_HEADER); AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER); Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Create and init a Root Node */ ParseRoot = AcpiPsCreateScopeOp (AmlStart); if (!ParseRoot) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Create and initialize a new walk state */ WalkState = AcpiDsCreateWalkState (OwnerId, NULL, NULL, NULL); if (!WalkState) { AcpiPsFreeOp (ParseRoot); return_ACPI_STATUS (AE_NO_MEMORY); } Status = AcpiDsInitAmlWalk (WalkState, ParseRoot, NULL, AmlStart, AmlLength, NULL, (UINT8) PassNumber); if (ACPI_FAILURE (Status)) { AcpiDsDeleteWalkState (WalkState); goto Cleanup; } /* Found OSDT table, enable the namespace override feature */ if (ACPI_COMPARE_NAMESEG (Table->Signature, ACPI_SIG_OSDT) && PassNumber == ACPI_IMODE_LOAD_PASS1) { WalkState->NamespaceOverride = TRUE; } /* StartNode is the default location to load the table */ if (StartNode && StartNode != AcpiGbl_RootNode) { Status = AcpiDsScopeStackPush ( StartNode, ACPI_TYPE_METHOD, WalkState); if (ACPI_FAILURE (Status)) { AcpiDsDeleteWalkState (WalkState); goto Cleanup; } } /* Parse the AML */ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %u parse\n", PassNumber)); AcpiExEnterInterpreter (); Status = AcpiPsParseAml (WalkState); AcpiExExitInterpreter (); Cleanup: AcpiPsDeleteParseTree (ParseRoot); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiNsParseTable * * PARAMETERS: TableDesc - An ACPI table descriptor for table to parse * StartNode - Where to enter the table into the namespace * * RETURN: Status * * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops * ******************************************************************************/ ACPI_STATUS AcpiNsParseTable ( UINT32 TableIndex, ACPI_NAMESPACE_NODE *StartNode) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (NsParseTable); /* * Executes the AML table as one large control method. * The point of this is to execute any module-level code in-place * as the table is parsed. Some AML code depends on this behavior. * * Note: This causes the table to only have a single-pass parse. * However, this is compatible with other ACPI implementations. */ ACPI_DEBUG_PRINT_RAW ((ACPI_DB_PARSE, "%s: **** Start table execution pass\n", ACPI_GET_FUNCTION_NAME)); Status = AcpiNsExecuteTable (TableIndex, StartNode); return_ACPI_STATUS (Status); }