/****************************************************************************** * * Module Name: dsobject - Dispatcher object management routines * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2018, 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 "acpi.h" #include "accommon.h" #include "acparser.h" #include "amlcode.h" #include "acdispat.h" #include "acnamesp.h" #include "acinterp.h" #define _COMPONENT ACPI_DISPATCHER ACPI_MODULE_NAME ("dsobject") #ifndef ACPI_NO_METHOD_EXECUTION /******************************************************************************* * * FUNCTION: AcpiDsBuildInternalObject * * PARAMETERS: WalkState - Current walk state * Op - Parser object to be translated * ObjDescPtr - Where the ACPI internal object is returned * * RETURN: Status * * DESCRIPTION: Translate a parser Op object to the equivalent namespace object * Simple objects are any objects other than a package object! * ******************************************************************************/ ACPI_STATUS AcpiDsBuildInternalObject ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op, ACPI_OPERAND_OBJECT **ObjDescPtr) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (DsBuildInternalObject); *ObjDescPtr = NULL; if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP) { /* * This is a named object reference. If this name was * previously looked up in the namespace, it was stored in * this op. Otherwise, go ahead and look it up now */ if (!Op->Common.Node) { /* Check if we are resolving a named reference within a package */ if ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || (Op->Common.Parent->Common.AmlOpcode == AML_VARIABLE_PACKAGE_OP)) { /* * We won't resolve package elements here, we will do this * after all ACPI tables are loaded into the namespace. This * behavior supports both forward references to named objects * and external references to objects in other tables. */ goto CreateNewObject; } else { Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, ACPI_CAST_INDIRECT_PTR ( ACPI_NAMESPACE_NODE, &(Op->Common.Node))); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Op->Common.Value.String, Status); return_ACPI_STATUS (Status); } } } } CreateNewObject: /* Create and init a new internal ACPI object */ ObjDesc = AcpiUtCreateInternalObject ( (AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode))->ObjectType); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } Status = AcpiDsInitObjectFromOp ( WalkState, Op, Op->Common.AmlOpcode, &ObjDesc); if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /* * Handling for unresolved package reference elements. * These are elements that are namepaths. */ if ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || (Op->Common.Parent->Common.AmlOpcode == AML_VARIABLE_PACKAGE_OP)) { ObjDesc->Reference.Resolved = TRUE; if ((Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && !ObjDesc->Reference.Node) { /* * Name was unresolved above. * Get the prefix node for later lookup */ ObjDesc->Reference.Node = WalkState->ScopeInfo->Scope.Node; ObjDesc->Reference.Aml = Op->Common.Aml; ObjDesc->Reference.Resolved = FALSE; } } *ObjDescPtr = ObjDesc; return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiDsBuildInternalBufferObj * * PARAMETERS: WalkState - Current walk state * Op - Parser object to be translated * BufferLength - Length of the buffer * ObjDescPtr - Where the ACPI internal object is returned * * RETURN: Status * * DESCRIPTION: Translate a parser Op package object to the equivalent * namespace object * ******************************************************************************/ ACPI_STATUS AcpiDsBuildInternalBufferObj ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op, UINT32 BufferLength, ACPI_OPERAND_OBJECT **ObjDescPtr) { ACPI_PARSE_OBJECT *Arg; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_PARSE_OBJECT *ByteList; UINT32 ByteListLength = 0; ACPI_FUNCTION_TRACE (DsBuildInternalBufferObj); /* * If we are evaluating a Named buffer object "Name (xxxx, Buffer)". * The buffer object already exists (from the NS node), otherwise it must * be created. */ ObjDesc = *ObjDescPtr; if (!ObjDesc) { /* Create a new buffer object */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); *ObjDescPtr = ObjDesc; if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } } /* * Second arg is the buffer data (optional) ByteList can be either * individual bytes or a string initializer. In either case, a * ByteList appears in the AML. */ Arg = Op->Common.Value.Arg; /* skip first arg */ ByteList = Arg->Named.Next; if (ByteList) { if (ByteList->Common.AmlOpcode != AML_INT_BYTELIST_OP) { ACPI_ERROR ((AE_INFO, "Expecting bytelist, found AML opcode 0x%X in op %p", ByteList->Common.AmlOpcode, ByteList)); AcpiUtRemoveReference (ObjDesc); return (AE_TYPE); } ByteListLength = (UINT32) ByteList->Common.Value.Integer; } /* * The buffer length (number of bytes) will be the larger of: * 1) The specified buffer length and * 2) The length of the initializer byte list */ ObjDesc->Buffer.Length = BufferLength; if (ByteListLength > BufferLength) { ObjDesc->Buffer.Length = ByteListLength; } /* Allocate the buffer */ if (ObjDesc->Buffer.Length == 0) { ObjDesc->Buffer.Pointer = NULL; ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer defined with zero length in AML, creating\n")); } else { ObjDesc->Buffer.Pointer = ACPI_ALLOCATE_ZEROED (ObjDesc->Buffer.Length); if (!ObjDesc->Buffer.Pointer) { AcpiUtDeleteObjectDesc (ObjDesc); return_ACPI_STATUS (AE_NO_MEMORY); } /* Initialize buffer from the ByteList (if present) */ if (ByteList) { memcpy (ObjDesc->Buffer.Pointer, ByteList->Named.Data, ByteListLength); } } ObjDesc->Buffer.Flags |= AOPOBJ_DATA_VALID; Op->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjDesc); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiDsCreateNode * * PARAMETERS: WalkState - Current walk state * Node - NS Node to be initialized * Op - Parser object to be translated * * RETURN: Status * * DESCRIPTION: Create the object to be associated with a namespace node * ******************************************************************************/ ACPI_STATUS AcpiDsCreateNode ( ACPI_WALK_STATE *WalkState, ACPI_NAMESPACE_NODE *Node, ACPI_PARSE_OBJECT *Op) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_FUNCTION_TRACE_PTR (DsCreateNode, Op); /* * Because of the execution pass through the non-control-method * parts of the table, we can arrive here twice. Only init * the named object node the first time through */ if (AcpiNsGetAttachedObject (Node)) { return_ACPI_STATUS (AE_OK); } if (!Op->Common.Value.Arg) { /* No arguments, there is nothing to do */ return_ACPI_STATUS (AE_OK); } /* Build an internal object for the argument(s) */ Status = AcpiDsBuildInternalObject ( WalkState, Op->Common.Value.Arg, &ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Re-type the object according to its argument */ Node->Type = ObjDesc->Common.Type; /* Attach obj to node */ Status = AcpiNsAttachObject (Node, ObjDesc, Node->Type); /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } #endif /* ACPI_NO_METHOD_EXECUTION */ /******************************************************************************* * * FUNCTION: AcpiDsInitObjectFromOp * * PARAMETERS: WalkState - Current walk state * Op - Parser op used to init the internal object * Opcode - AML opcode associated with the object * RetObjDesc - Namespace object to be initialized * * RETURN: Status * * DESCRIPTION: Initialize a namespace object from a parser Op and its * associated arguments. The namespace object is a more compact * representation of the Op and its arguments. * ******************************************************************************/ ACPI_STATUS AcpiDsInitObjectFromOp ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op, UINT16 Opcode, ACPI_OPERAND_OBJECT **RetObjDesc) { const ACPI_OPCODE_INFO *OpInfo; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (DsInitObjectFromOp); ObjDesc = *RetObjDesc; OpInfo = AcpiPsGetOpcodeInfo (Opcode); if (OpInfo->Class == AML_CLASS_UNKNOWN) { /* Unknown opcode */ return_ACPI_STATUS (AE_TYPE); } /* Perform per-object initialization */ switch (ObjDesc->Common.Type) { case ACPI_TYPE_BUFFER: /* * Defer evaluation of Buffer TermArg operand */ ObjDesc->Buffer.Node = ACPI_CAST_PTR ( ACPI_NAMESPACE_NODE, WalkState->Operands[0]); ObjDesc->Buffer.AmlStart = Op->Named.Data; ObjDesc->Buffer.AmlLength = Op->Named.Length; break; case ACPI_TYPE_PACKAGE: /* * Defer evaluation of Package TermArg operand and all * package elements. (01/2017): We defer the element * resolution to allow forward references from the package * in order to provide compatibility with other ACPI * implementations. */ ObjDesc->Package.Node = ACPI_CAST_PTR ( ACPI_NAMESPACE_NODE, WalkState->Operands[0]); if (!Op->Named.Data) { return_ACPI_STATUS (AE_OK); } ObjDesc->Package.AmlStart = Op->Named.Data; ObjDesc->Package.AmlLength = Op->Named.Length; break; case ACPI_TYPE_INTEGER: switch (OpInfo->Type) { case AML_TYPE_CONSTANT: /* * Resolve AML Constants here - AND ONLY HERE! * All constants are integers. * We mark the integer with a flag that indicates that it started * life as a constant -- so that stores to constants will perform * as expected (noop). ZeroOp is used as a placeholder for optional * target operands. */ ObjDesc->Common.Flags = AOPOBJ_AML_CONSTANT; switch (Opcode) { case AML_ZERO_OP: ObjDesc->Integer.Value = 0; break; case AML_ONE_OP: ObjDesc->Integer.Value = 1; break; case AML_ONES_OP: ObjDesc->Integer.Value = ACPI_UINT64_MAX; /* Truncate value if we are executing from a 32-bit ACPI table */ #ifndef ACPI_NO_METHOD_EXECUTION (void) AcpiExTruncateFor32bitTable (ObjDesc); #endif break; case AML_REVISION_OP: ObjDesc->Integer.Value = ACPI_CA_VERSION; break; default: ACPI_ERROR ((AE_INFO, "Unknown constant opcode 0x%X", Opcode)); Status = AE_AML_OPERAND_TYPE; break; } break; case AML_TYPE_LITERAL: ObjDesc->Integer.Value = Op->Common.Value.Integer; #ifndef ACPI_NO_METHOD_EXECUTION if (AcpiExTruncateFor32bitTable (ObjDesc)) { /* Warn if we found a 64-bit constant in a 32-bit table */ ACPI_WARNING ((AE_INFO, "Truncated 64-bit constant found in 32-bit table: %8.8X%8.8X => %8.8X", ACPI_FORMAT_UINT64 (Op->Common.Value.Integer), (UINT32) ObjDesc->Integer.Value)); } #endif break; default: ACPI_ERROR ((AE_INFO, "Unknown Integer type 0x%X", OpInfo->Type)); Status = AE_AML_OPERAND_TYPE; break; } break; case ACPI_TYPE_STRING: ObjDesc->String.Pointer = Op->Common.Value.String; ObjDesc->String.Length = (UINT32) strlen (Op->Common.Value.String); /* * The string is contained in the ACPI table, don't ever try * to delete it */ ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER; break; case ACPI_TYPE_METHOD: break; case ACPI_TYPE_LOCAL_REFERENCE: switch (OpInfo->Type) { case AML_TYPE_LOCAL_VARIABLE: /* Local ID (0-7) is (AML opcode - base AML_FIRST_LOCAL_OP) */ ObjDesc->Reference.Value = ((UINT32) Opcode) - AML_FIRST_LOCAL_OP; ObjDesc->Reference.Class = ACPI_REFCLASS_LOCAL; #ifndef ACPI_NO_METHOD_EXECUTION Status = AcpiDsMethodDataGetNode (ACPI_REFCLASS_LOCAL, ObjDesc->Reference.Value, WalkState, ACPI_CAST_INDIRECT_PTR (ACPI_NAMESPACE_NODE, &ObjDesc->Reference.Object)); #endif break; case AML_TYPE_METHOD_ARGUMENT: /* Arg ID (0-6) is (AML opcode - base AML_FIRST_ARG_OP) */ ObjDesc->Reference.Value = ((UINT32) Opcode) - AML_FIRST_ARG_OP; ObjDesc->Reference.Class = ACPI_REFCLASS_ARG; #ifndef ACPI_NO_METHOD_EXECUTION Status = AcpiDsMethodDataGetNode (ACPI_REFCLASS_ARG, ObjDesc->Reference.Value, WalkState, ACPI_CAST_INDIRECT_PTR (ACPI_NAMESPACE_NODE, &ObjDesc->Reference.Object)); #endif break; default: /* Object name or Debug object */ switch (Op->Common.AmlOpcode) { case AML_INT_NAMEPATH_OP: /* Node was saved in Op */ ObjDesc->Reference.Node = Op->Common.Node; ObjDesc->Reference.Class = ACPI_REFCLASS_NAME; if (Op->Common.Node) { ObjDesc->Reference.Object = Op->Common.Node->Object; } break; case AML_DEBUG_OP: ObjDesc->Reference.Class = ACPI_REFCLASS_DEBUG; break; default: ACPI_ERROR ((AE_INFO, "Unimplemented reference type for AML opcode: 0x%4.4X", Opcode)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } break; } break; default: ACPI_ERROR ((AE_INFO, "Unimplemented data type: 0x%X", ObjDesc->Common.Type)); Status = AE_AML_OPERAND_TYPE; break; } return_ACPI_STATUS (Status); }