/****************************************************************************** * * Module Name: exstore - AML Interpreter object store support * $Revision: 177 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2003, 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 __EXSTORE_C__ #include "acpi.h" #include "acdispat.h" #include "acinterp.h" #include "amlcode.h" #include "acnamesp.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exstore") /******************************************************************************* * * FUNCTION: AcpiExStore * * PARAMETERS: *SourceDesc - Value to be stored * *DestDesc - Where to store it. Must be an NS node * or an ACPI_OPERAND_OBJECT of type * Reference; * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Store the value described by SourceDesc into the location * described by DestDesc. Called by various interpreter * functions to store the result of an operation into * the destination operand -- not just simply the actual "Store" * ASL operator. * ******************************************************************************/ ACPI_STATUS AcpiExStore ( ACPI_OPERAND_OBJECT *SourceDesc, ACPI_OPERAND_OBJECT *DestDesc, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *RefDesc = DestDesc; ACPI_FUNCTION_TRACE_PTR ("ExStore", DestDesc); /* Validate parameters */ if (!SourceDesc || !DestDesc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null parameter\n")); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* DestDesc can be either a namespace node or an ACPI object */ if (ACPI_GET_DESCRIPTOR_TYPE (DestDesc) == ACPI_DESC_TYPE_NAMED) { /* * Dest is a namespace node, * Storing an object into a Named node. */ Status = AcpiExStoreObjectToNode (SourceDesc, (ACPI_NAMESPACE_NODE *) DestDesc, WalkState); return_ACPI_STATUS (Status); } /* Destination object must be a Reference or a Constant object */ switch (ACPI_GET_OBJECT_TYPE (DestDesc)) { case ACPI_TYPE_LOCAL_REFERENCE: break; case ACPI_TYPE_INTEGER: /* Allow stores to Constants -- a Noop as per ACPI spec */ if (DestDesc->Common.Flags & AOPOBJ_AML_CONSTANT) { return_ACPI_STATUS (AE_OK); } /*lint -fallthrough */ default: /* Destination is not an Reference */ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Destination is not a Reference or Constant object [%p]\n", DestDesc)); ACPI_DUMP_STACK_ENTRY (SourceDesc); ACPI_DUMP_STACK_ENTRY (DestDesc); ACPI_DUMP_OPERANDS (&DestDesc, ACPI_IMODE_EXECUTE, "ExStore", 2, "Target is not a Reference or Constant object"); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* * Examine the Reference opcode. These cases are handled: * * 1) Store to Name (Change the object associated with a name) * 2) Store to an indexed area of a Buffer or Package * 3) Store to a Method Local or Arg * 4) Store to the debug object */ switch (RefDesc->Reference.Opcode) { case AML_NAME_OP: case AML_REF_OF_OP: /* Storing an object into a Name "container" */ Status = AcpiExStoreObjectToNode (SourceDesc, RefDesc->Reference.Object, WalkState); break; case AML_INDEX_OP: /* Storing to an Index (pointer into a packager or buffer) */ Status = AcpiExStoreObjectToIndex (SourceDesc, RefDesc, WalkState); break; case AML_LOCAL_OP: case AML_ARG_OP: /* Store to a method local/arg */ Status = AcpiDsStoreObjectToLocal (RefDesc->Reference.Opcode, RefDesc->Reference.Offset, SourceDesc, WalkState); break; case AML_DEBUG_OP: /* * Storing to the Debug object causes the value stored to be * displayed and otherwise has no effect -- see ACPI Specification */ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "**** Write to Debug Object: ****:\n\n")); ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %s: ", AcpiUtGetObjectTypeName (SourceDesc))); switch (ACPI_GET_OBJECT_TYPE (SourceDesc)) { case ACPI_TYPE_INTEGER: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%8.8X%8.8X\n", ACPI_FORMAT_UINT64 (SourceDesc->Integer.Value))); break; case ACPI_TYPE_BUFFER: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "Length %.2X\n", (UINT32) SourceDesc->Buffer.Length)); break; case ACPI_TYPE_STRING: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%s\n", SourceDesc->String.Pointer)); break; case ACPI_TYPE_PACKAGE: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "Elements Ptr - %p\n", SourceDesc->Package.Elements)); break; default: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "Type %s %p\n", AcpiUtGetObjectTypeName (SourceDesc), SourceDesc)); break; } ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n")); break; default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Reference opcode %X\n", RefDesc->Reference.Opcode)); ACPI_DUMP_ENTRY (RefDesc, ACPI_LV_ERROR); Status = AE_AML_INTERNAL; break; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExStoreObjectToIndex * * PARAMETERS: *SourceDesc - Value to be stored * *DestDesc - Named object to receive the value * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Store the object to indexed Buffer or Package element * ******************************************************************************/ ACPI_STATUS AcpiExStoreObjectToIndex ( ACPI_OPERAND_OBJECT *SourceDesc, ACPI_OPERAND_OBJECT *IndexDesc, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *NewDesc; UINT8 Value = 0; ACPI_FUNCTION_TRACE ("ExStoreObjectToIndex"); /* * Destination must be a reference pointer, and * must point to either a buffer or a package */ switch (IndexDesc->Reference.TargetType) { case ACPI_TYPE_PACKAGE: /* * Storing to a package element is not simple. The source must be * evaluated and converted to the type of the destination and then the * source is copied into the destination - we can't just point to the * source object. */ /* * The object at *(IndexDesc->Reference.Where) is the * element within the package that is to be modified. */ ObjDesc = *(IndexDesc->Reference.Where); /* Do the conversion/store */ Status = AcpiExStoreObjectToObject (SourceDesc, ObjDesc, &NewDesc, WalkState); if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not store object to indexed package element\n")); return_ACPI_STATUS (Status); } /* * If a new object was created, we must install it as the new * package element */ if (NewDesc != ObjDesc) { AcpiUtRemoveReference (ObjDesc); *(IndexDesc->Reference.Where) = NewDesc; /* If same as the original source, add a reference */ if (NewDesc == SourceDesc) { AcpiUtAddReference (NewDesc); } } break; case ACPI_TYPE_BUFFER_FIELD: /* * Store into a Buffer (not actually a real BufferField) at a * location defined by an Index. * * The first 8-bit element of the source object is written to the * 8-bit Buffer location defined by the Index destination object, * according to the ACPI 2.0 specification. */ /* * Make sure the target is a Buffer */ ObjDesc = IndexDesc->Reference.Object; if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_BUFFER) { return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* * The assignment of the individual elements will be slightly * different for each source type. */ switch (ACPI_GET_OBJECT_TYPE (SourceDesc)) { case ACPI_TYPE_INTEGER: /* Use the least-significant byte of the integer */ Value = (UINT8) (SourceDesc->Integer.Value); break; case ACPI_TYPE_BUFFER: Value = SourceDesc->Buffer.Pointer[0]; break; case ACPI_TYPE_STRING: Value = (UINT8) SourceDesc->String.Pointer[0]; break; default: /* All other types are invalid */ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Source must be Integer/Buffer/String type, not %s\n", AcpiUtGetObjectTypeName (SourceDesc))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Store the source value into the target buffer byte */ ObjDesc->Buffer.Pointer[IndexDesc->Reference.Offset] = Value; break; default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Target is not a Package or BufferField\n")); Status = AE_AML_OPERAND_TYPE; break; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExStoreObjectToNode * * PARAMETERS: SourceDesc - Value to be stored * Node - Named object to receive the value * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Store the object to the named object. * * The Assignment of an object to a named object is handled here * The value passed in will replace the current value (if any) * with the input value. * * When storing into an object the data is converted to the * target object type then stored in the object. This means * that the target object type (for an initialized target) will * not be changed by a store operation. * * Assumes parameters are already validated. * ******************************************************************************/ ACPI_STATUS AcpiExStoreObjectToNode ( ACPI_OPERAND_OBJECT *SourceDesc, ACPI_NAMESPACE_NODE *Node, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *TargetDesc; ACPI_OPERAND_OBJECT *NewDesc; ACPI_OBJECT_TYPE TargetType; ACPI_FUNCTION_TRACE_PTR ("ExStoreObjectToNode", SourceDesc); /* * Get current type of the node, and object attached to Node */ TargetType = AcpiNsGetType (Node); TargetDesc = AcpiNsGetAttachedObject (Node); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n", SourceDesc, AcpiUtGetObjectTypeName (SourceDesc), Node, AcpiUtGetTypeName (TargetType))); /* * Resolve the source object to an actual value * (If it is a reference object) */ Status = AcpiExResolveObject (&SourceDesc, TargetType, WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Do the actual store operation */ switch (TargetType) { case ACPI_TYPE_BUFFER_FIELD: case ACPI_TYPE_LOCAL_REGION_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: case ACPI_TYPE_LOCAL_INDEX_FIELD: /* * For fields, copy the source data to the target field. */ Status = AcpiExWriteDataToField (SourceDesc, TargetDesc, &WalkState->ResultObj); break; case ACPI_TYPE_INTEGER: case ACPI_TYPE_STRING: case ACPI_TYPE_BUFFER: /* * These target types are all of type Integer/String/Buffer, and * therefore support implicit conversion before the store. * * Copy and/or convert the source object to a new target object */ Status = AcpiExStoreObjectToObject (SourceDesc, TargetDesc, &NewDesc, WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (NewDesc != TargetDesc) { /* * Store the new NewDesc as the new value of the Name, and set * the Name's type to that of the value being stored in it. * SourceDesc reference count is incremented by AttachObject. * * Note: This may change the type of the node if an explicit store * has been performed such that the node/object type has been * changed. */ Status = AcpiNsAttachObject (Node, NewDesc, NewDesc->Common.Type); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Store %s into %s via Convert/Attach\n", AcpiUtGetObjectTypeName (SourceDesc), AcpiUtGetObjectTypeName (NewDesc))); } break; default: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Storing %s (%p) directly into node (%p), no implicit conversion\n", AcpiUtGetObjectTypeName (SourceDesc), SourceDesc, Node)); /* No conversions for all other types. Just attach the source object */ Status = AcpiNsAttachObject (Node, SourceDesc, ACPI_GET_OBJECT_TYPE (SourceDesc)); break; } return_ACPI_STATUS (Status); }