/****************************************************************************** * * Module Name: amresnte - AML Interpreter object resolution * $Revision: 25 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999, 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 __AMRESNTE_C__ #include "acpi.h" #include "amlcode.h" #include "acparser.h" #include "acdispat.h" #include "acinterp.h" #include "acnamesp.h" #include "actables.h" #include "acevents.h" #define _COMPONENT INTERPRETER MODULE_NAME ("amresnte") /******************************************************************************* * * FUNCTION: AcpiAmlResolveNodeToValue * * PARAMETERS: StackPtr - Pointer to a location on a stack that contains * a pointer to an Node * * RETURN: Status * * DESCRIPTION: Resolve a ACPI_NAMESPACE_NODE (Node, * A.K.A. a "direct name pointer") * * Note: for some of the data types, the pointer attached to the Node * can be either a pointer to an actual internal object or a pointer into the * AML stream itself. These types are currently: * * ACPI_TYPE_NUMBER * ACPI_TYPE_STRING * ACPI_TYPE_BUFFER * ACPI_TYPE_MUTEX * ACPI_TYPE_PACKAGE * ******************************************************************************/ ACPI_STATUS AcpiAmlResolveNodeToValue ( ACPI_NAMESPACE_NODE **StackPtr, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *ValDesc = NULL; ACPI_OPERAND_OBJECT *ObjDesc = NULL; ACPI_NAMESPACE_NODE *Node; UINT8 *AmlPointer = NULL; OBJECT_TYPE_INTERNAL EntryType; BOOLEAN Locked; BOOLEAN AttachedAmlPointer = FALSE; UINT8 AmlOpcode = 0; ACPI_INTEGER TempVal; OBJECT_TYPE_INTERNAL ObjectType; FUNCTION_TRACE ("AmlResolveEntryToValue"); Node = *StackPtr; /* * The stack pointer is a "Direct name ptr", and points to a * a ACPI_NAMESPACE_NODE (Node). Get the pointer that is attached to * the Node. */ ValDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) Node); EntryType = AcpiNsGetType ((ACPI_HANDLE) Node); DEBUG_PRINT (TRACE_EXEC, ("AmlResolveEntryToValue: Entry=%p ValDesc=%p Type=%X\n", Node, ValDesc, EntryType)); /* * The ValDesc attached to the Node can be either: * 1) An internal ACPI object * 2) A pointer into the AML stream (into one of the ACPI system tables) */ if (AcpiTbSystemTablePointer (ValDesc)) { AttachedAmlPointer = TRUE; AmlOpcode = *((UINT8 *) ValDesc); AmlPointer = ((UINT8 *) ValDesc) + 1; DEBUG_PRINT (TRACE_EXEC, ("AmlResolveEntryToValue: Unparsed AML: %p Len=%X\n", AmlOpcode, AmlPointer)); } /* * Several EntryTypes do not require further processing, so * we will return immediately */ /* Devices rarely have an attached object, return the Node * and Method locals and arguments have a pseudo-Node */ if (EntryType == ACPI_TYPE_DEVICE || (Node->Flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) { return_ACPI_STATUS (AE_OK); } if (!ValDesc) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: No object attached to node %p\n", Node)); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* * Action is based on the type of the Node, which indicates the type * of the attached object or pointer */ switch (EntryType) { case ACPI_TYPE_PACKAGE: if (AttachedAmlPointer) { /* * This means that the package initialization is not parsed * -- should not happen */ DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Unparsed Packages not supported!\n")); return_ACPI_STATUS (AE_NOT_IMPLEMENTED); } /* ValDesc is an internal object in all cases by the time we get here */ if (ACPI_TYPE_PACKAGE != ValDesc->Common.Type) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Object not a package, type %X\n", ValDesc->Common.Type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ ObjDesc = ValDesc; AcpiCmAddReference (ObjDesc); break; case ACPI_TYPE_BUFFER: if (AttachedAmlPointer) { /* * This means that the buffer initialization is not parsed * -- should not happen */ DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Unparsed Buffers not supported!\n")); return_ACPI_STATUS (AE_NOT_IMPLEMENTED); } /* ValDesc is an internal object in all cases by the time we get here */ if (ACPI_TYPE_BUFFER != ValDesc->Common.Type) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Object not a buffer, type %X\n", ValDesc->Common.Type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ ObjDesc = ValDesc; AcpiCmAddReference (ObjDesc); break; case ACPI_TYPE_STRING: if (AttachedAmlPointer) { /* Allocate a new string object */ ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_STRING); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Init the internal object */ ObjDesc->String.Pointer = (NATIVE_CHAR *) AmlPointer; ObjDesc->String.Length = STRLEN (ObjDesc->String.Pointer); } else { if (ACPI_TYPE_STRING != ValDesc->Common.Type) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Object not a string, type %X\n", ValDesc->Common.Type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ ObjDesc = ValDesc; AcpiCmAddReference (ObjDesc); } break; case ACPI_TYPE_NUMBER: DEBUG_PRINT (TRACE_EXEC, ("AmlResolveEntryToValue: case Number \n")); /* * The Node has an attached internal object, make sure that it's a * number */ if (ACPI_TYPE_NUMBER != ValDesc->Common.Type) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveToValue: Object not a Number, type %X\n", ValDesc->Common.Type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ ObjDesc = ValDesc; AcpiCmAddReference (ObjDesc); break; case INTERNAL_TYPE_DEF_FIELD: /* * TBD: [Investigate] Is this the correct solution? * * This section was extended to convert to generic buffer if * the return length is greater than 32 bits, but still allows * for returning a type Number for smaller values because the * caller can then apply arithmetic operators on those fields. * * XXX - Implementation limitation: Fields are implemented as type * XXX - Number, but they really are supposed to be type Buffer. * XXX - The two are interchangeable only for lengths <= 32 bits. */ if(ValDesc->Field.Length > 32) { ObjectType = ACPI_TYPE_BUFFER; } else { ObjectType = ACPI_TYPE_NUMBER; } /* * Create the destination buffer object and the buffer space. */ ObjDesc = AcpiCmCreateInternalObject (ObjectType); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* * Fill in the object specific details */ if (ACPI_TYPE_BUFFER == ObjectType) { ObjDesc->Buffer.Pointer = AcpiCmCallocate (ValDesc->Field.Length); if (!ObjDesc->Buffer.Pointer) { AcpiCmRemoveReference(ObjDesc); return_ACPI_STATUS (AE_NO_MEMORY); } ObjDesc->Buffer.Length = ValDesc->Field.Length; Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) Node, ObjDesc->Buffer.Pointer, ObjDesc->Buffer.Length); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } else { Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) Node, &TempVal, sizeof (TempVal)); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ObjDesc->Number.Value = TempVal; } DEBUG_PRINT (TRACE_EXEC, ("AmlResolveEntryToValue: DefField Entry=%p ValDesc=%p Type=%X\n", Node, ValDesc, EntryType)); break; case INTERNAL_TYPE_BANK_FIELD: if (AttachedAmlPointer) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: BankField cannot be an Aml ptr\n")); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } if (INTERNAL_TYPE_BANK_FIELD != ValDesc->Common.Type) { DEBUG_PRINT (ACPI_ERROR, ( "AmlResolveToValue: Object not a BankField, type %X\n", ValDesc->Common.Type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Get the global lock if needed */ ObjDesc = (ACPI_OPERAND_OBJECT *) *StackPtr; Locked = AcpiAmlAcquireGlobalLock (ObjDesc->FieldUnit.LockRule); /* Set Index value to select proper Data register */ /* perform the update */ Status = AcpiAmlAccessNamedField (ACPI_WRITE, ValDesc->BankField.BankSelect, &ValDesc->BankField.Value, sizeof (ValDesc->BankField.Value)); AcpiAmlReleaseGlobalLock (Locked); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Read Data value */ Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) ValDesc->BankField.Container, &TempVal, sizeof (TempVal)); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Create an object for the result */ ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_NUMBER); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } ObjDesc->Number.Value = TempVal; break; case INTERNAL_TYPE_INDEX_FIELD: if (AttachedAmlPointer) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Internal - IndexField cannot be an Aml ptr\n")); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } if (INTERNAL_TYPE_INDEX_FIELD != ValDesc->Common.Type) { DEBUG_PRINT (ACPI_ERROR, ( "AmlResolveToValue: Object not an IndexField, type %X\n", ValDesc->Common.Type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Set Index value to select proper Data register */ /* Get the global lock if needed */ ObjDesc = (ACPI_OPERAND_OBJECT *) *StackPtr; Locked = AcpiAmlAcquireGlobalLock (ObjDesc->FieldUnit.LockRule); /* Perform the update */ Status = AcpiAmlAccessNamedField (ACPI_WRITE, ValDesc->IndexField.Index, &ValDesc->IndexField.Value, sizeof (ValDesc->IndexField.Value)); AcpiAmlReleaseGlobalLock (Locked); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Read Data value */ Status = AcpiAmlAccessNamedField (ACPI_READ, ValDesc->IndexField.Data, &TempVal, sizeof (TempVal)); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Create an object for the result */ ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_NUMBER); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } ObjDesc->Number.Value = TempVal; break; case ACPI_TYPE_FIELD_UNIT: if (AttachedAmlPointer) { DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: FieldUnit cannot be an Aml ptr\n")); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } if (ValDesc->Common.Type != (UINT8) EntryType) { DEBUG_PRINT (ACPI_ERROR, ( "AmlResolveToValue: Object type %X not same as EntryType %X\n", ValDesc->Common.Type, EntryType)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); break; } /* Create object for result */ ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_ANY); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } Status = AcpiAmlGetFieldUnitValue (ValDesc, ObjDesc); if (ACPI_FAILURE (Status)) { AcpiCmRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } break; /* * For these objects, just return the object attached to the Node */ case ACPI_TYPE_MUTEX: case ACPI_TYPE_METHOD: case ACPI_TYPE_POWER: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: case ACPI_TYPE_EVENT: case ACPI_TYPE_REGION: /* Return an additional reference to the object */ ObjDesc = ValDesc; AcpiCmAddReference (ObjDesc); break; /* TYPE_Any is untyped, and thus there is no object associated with it */ case ACPI_TYPE_ANY: DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Untyped entry %p, no attached object!\n", Node)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */ break; /* * The only named references allowed are named constants * * e.g. Name (\OSFL, Ones) */ case INTERNAL_TYPE_REFERENCE: switch (ValDesc->Reference.OpCode) { case AML_ZERO_OP: TempVal = 0; break; case AML_ONE_OP: TempVal = 1; break; case AML_ONES_OP: TempVal = ACPI_INTEGER_MAX; break; default: DEBUG_PRINT (ACPI_ERROR, ("AmlResolveToValue/Number: Unsupported reference opcode %X\n", ValDesc->Reference.OpCode)); return_ACPI_STATUS (AE_AML_BAD_OPCODE); } /* Create object for result */ ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_NUMBER); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } ObjDesc->Number.Value = TempVal; /* Truncate value if we are executing from a 32-bit ACPI table */ AcpiAmlTruncateFor32bitTable (ObjDesc, WalkState); break; /* Default case is for unknown types */ default: DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Node %p - Unknown object type %X\n", Node, EntryType)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* switch (EntryType) */ /* Put the object descriptor on the stack */ *StackPtr = (void *) ObjDesc; return_ACPI_STATUS (Status); }