exresolv.c revision 91116
167754Smsmith 267754Smsmith/****************************************************************************** 367754Smsmith * 477424Smsmith * Module Name: exresolv - AML Interpreter object resolution 591116Smsmith * $Revision: 106 $ 667754Smsmith * 767754Smsmith *****************************************************************************/ 867754Smsmith 967754Smsmith/****************************************************************************** 1067754Smsmith * 1167754Smsmith * 1. Copyright Notice 1267754Smsmith * 1391116Smsmith * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. 1470243Smsmith * All rights reserved. 1567754Smsmith * 1667754Smsmith * 2. License 1767754Smsmith * 1867754Smsmith * 2.1. This is your license from Intel Corp. under its intellectual property 1967754Smsmith * rights. You may have additional license terms from the party that provided 2067754Smsmith * you this software, covering your right to use that party's intellectual 2167754Smsmith * property rights. 2267754Smsmith * 2367754Smsmith * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2467754Smsmith * copy of the source code appearing in this file ("Covered Code") an 2567754Smsmith * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2667754Smsmith * base code distributed originally by Intel ("Original Intel Code") to copy, 2767754Smsmith * make derivatives, distribute, use and display any portion of the Covered 2867754Smsmith * Code in any form, with the right to sublicense such rights; and 2967754Smsmith * 3067754Smsmith * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3167754Smsmith * license (with the right to sublicense), under only those claims of Intel 3267754Smsmith * patents that are infringed by the Original Intel Code, to make, use, sell, 3367754Smsmith * offer to sell, and import the Covered Code and derivative works thereof 3467754Smsmith * solely to the minimum extent necessary to exercise the above copyright 3567754Smsmith * license, and in no event shall the patent license extend to any additions 3667754Smsmith * to or modifications of the Original Intel Code. No other license or right 3767754Smsmith * is granted directly or by implication, estoppel or otherwise; 3867754Smsmith * 3967754Smsmith * The above copyright and patent license is granted only if the following 4067754Smsmith * conditions are met: 4167754Smsmith * 4267754Smsmith * 3. Conditions 4367754Smsmith * 4467754Smsmith * 3.1. Redistribution of Source with Rights to Further Distribute Source. 4567754Smsmith * Redistribution of source code of any substantial portion of the Covered 4667754Smsmith * Code or modification with rights to further distribute source must include 4767754Smsmith * the above Copyright Notice, the above License, this list of Conditions, 4867754Smsmith * and the following Disclaimer and Export Compliance provision. In addition, 4967754Smsmith * Licensee must cause all Covered Code to which Licensee contributes to 5067754Smsmith * contain a file documenting the changes Licensee made to create that Covered 5167754Smsmith * Code and the date of any change. Licensee must include in that file the 5267754Smsmith * documentation of any changes made by any predecessor Licensee. Licensee 5367754Smsmith * must include a prominent statement that the modification is derived, 5467754Smsmith * directly or indirectly, from Original Intel Code. 5567754Smsmith * 5667754Smsmith * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 5767754Smsmith * Redistribution of source code of any substantial portion of the Covered 5867754Smsmith * Code or modification without rights to further distribute source must 5967754Smsmith * include the following Disclaimer and Export Compliance provision in the 6067754Smsmith * documentation and/or other materials provided with distribution. In 6167754Smsmith * addition, Licensee may not authorize further sublicense of source of any 6267754Smsmith * portion of the Covered Code, and must include terms to the effect that the 6367754Smsmith * license from Licensee to its licensee is limited to the intellectual 6467754Smsmith * property embodied in the software Licensee provides to its licensee, and 6567754Smsmith * not to intellectual property embodied in modifications its licensee may 6667754Smsmith * make. 6767754Smsmith * 6867754Smsmith * 3.3. Redistribution of Executable. Redistribution in executable form of any 6967754Smsmith * substantial portion of the Covered Code or modification must reproduce the 7067754Smsmith * above Copyright Notice, and the following Disclaimer and Export Compliance 7167754Smsmith * provision in the documentation and/or other materials provided with the 7267754Smsmith * distribution. 7367754Smsmith * 7467754Smsmith * 3.4. Intel retains all right, title, and interest in and to the Original 7567754Smsmith * Intel Code. 7667754Smsmith * 7767754Smsmith * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7867754Smsmith * Intel shall be used in advertising or otherwise to promote the sale, use or 7967754Smsmith * other dealings in products derived from or relating to the Covered Code 8067754Smsmith * without prior written authorization from Intel. 8167754Smsmith * 8267754Smsmith * 4. Disclaimer and Export Compliance 8367754Smsmith * 8467754Smsmith * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8567754Smsmith * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8667754Smsmith * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8767754Smsmith * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8867754Smsmith * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 8967754Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 9067754Smsmith * PARTICULAR PURPOSE. 9167754Smsmith * 9267754Smsmith * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9367754Smsmith * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9467754Smsmith * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9567754Smsmith * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9667754Smsmith * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9767754Smsmith * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9867754Smsmith * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 9967754Smsmith * LIMITED REMEDY. 10067754Smsmith * 10167754Smsmith * 4.3. Licensee shall not export, either directly or indirectly, any of this 10267754Smsmith * software or system incorporating such software without first obtaining any 10367754Smsmith * required license or other approval from the U. S. Department of Commerce or 10467754Smsmith * any other agency or department of the United States Government. In the 10567754Smsmith * event Licensee exports any such software from the United States or 10667754Smsmith * re-exports any such software from a foreign destination, Licensee shall 10767754Smsmith * ensure that the distribution and export/re-export of the software is in 10867754Smsmith * compliance with all laws, regulations, orders, or other restrictions of the 10967754Smsmith * U.S. Export Administration Regulations. Licensee agrees that neither it nor 11067754Smsmith * any of its subsidiaries will export/re-export any technical data, process, 11167754Smsmith * software, or service, directly or indirectly, to any country for which the 11267754Smsmith * United States government or any agency thereof requires an export license, 11367754Smsmith * other governmental approval, or letter of assurance, without first obtaining 11467754Smsmith * such license, approval or letter. 11567754Smsmith * 11667754Smsmith *****************************************************************************/ 11767754Smsmith 11877424Smsmith#define __EXRESOLV_C__ 11967754Smsmith 12067754Smsmith#include "acpi.h" 12167754Smsmith#include "amlcode.h" 12267754Smsmith#include "acparser.h" 12367754Smsmith#include "acdispat.h" 12467754Smsmith#include "acinterp.h" 12567754Smsmith#include "acnamesp.h" 12667754Smsmith#include "actables.h" 12767754Smsmith#include "acevents.h" 12867754Smsmith 12967754Smsmith 13077424Smsmith#define _COMPONENT ACPI_EXECUTER 13191116Smsmith ACPI_MODULE_NAME ("exresolv") 13267754Smsmith 13367754Smsmith 13467754Smsmith/******************************************************************************* 13567754Smsmith * 13677424Smsmith * FUNCTION: AcpiExResolveToValue 13767754Smsmith * 13867754Smsmith * PARAMETERS: **StackPtr - Points to entry on ObjStack, which can 13977424Smsmith * be either an (ACPI_OPERAND_OBJECT *) 14067754Smsmith * or an ACPI_HANDLE. 14177424Smsmith * WalkState - Current method state 14267754Smsmith * 14367754Smsmith * RETURN: Status 14467754Smsmith * 14571867Smsmith * DESCRIPTION: Convert Reference objects to values 14667754Smsmith * 14767754Smsmith ******************************************************************************/ 14867754Smsmith 14967754SmsmithACPI_STATUS 15077424SmsmithAcpiExResolveToValue ( 15167754Smsmith ACPI_OPERAND_OBJECT **StackPtr, 15267754Smsmith ACPI_WALK_STATE *WalkState) 15367754Smsmith{ 15477424Smsmith ACPI_STATUS Status; 15567754Smsmith 15667754Smsmith 15791116Smsmith ACPI_FUNCTION_TRACE_PTR ("ExResolveToValue", StackPtr); 15867754Smsmith 15967754Smsmith 16067754Smsmith if (!StackPtr || !*StackPtr) 16167754Smsmith { 16282367Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Internal - null pointer\n")); 16367754Smsmith return_ACPI_STATUS (AE_AML_NO_OPERAND); 16467754Smsmith } 16567754Smsmith 16667754Smsmith /* 16767754Smsmith * The entity pointed to by the StackPtr can be either 16867754Smsmith * 1) A valid ACPI_OPERAND_OBJECT, or 16967754Smsmith * 2) A ACPI_NAMESPACE_NODE (NamedObj) 17067754Smsmith */ 17191116Smsmith if (ACPI_GET_DESCRIPTOR_TYPE (*StackPtr) == ACPI_DESC_TYPE_INTERNAL) 17267754Smsmith { 17377424Smsmith Status = AcpiExResolveObjectToValue (StackPtr, WalkState); 17467754Smsmith if (ACPI_FAILURE (Status)) 17567754Smsmith { 17667754Smsmith return_ACPI_STATUS (Status); 17767754Smsmith } 17867754Smsmith } 17967754Smsmith 18067754Smsmith /* 18177424Smsmith * Object on the stack may have changed if AcpiExResolveObjectToValue() 18267754Smsmith * was called (i.e., we can't use an _else_ here.) 18367754Smsmith */ 18491116Smsmith if (ACPI_GET_DESCRIPTOR_TYPE (*StackPtr) == ACPI_DESC_TYPE_NAMED) 18567754Smsmith { 18677424Smsmith Status = AcpiExResolveNodeToValue ((ACPI_NAMESPACE_NODE **) StackPtr, 18777424Smsmith WalkState); 18877424Smsmith if (ACPI_FAILURE (Status)) 18977424Smsmith { 19077424Smsmith return_ACPI_STATUS (Status); 19177424Smsmith } 19267754Smsmith } 19367754Smsmith 19482367Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Resolved object %p\n", *StackPtr)); 19577424Smsmith return_ACPI_STATUS (AE_OK); 19667754Smsmith} 19767754Smsmith 19867754Smsmith 19967754Smsmith/******************************************************************************* 20067754Smsmith * 20177424Smsmith * FUNCTION: AcpiExResolveObjectToValue 20267754Smsmith * 20367754Smsmith * PARAMETERS: StackPtr - Pointer to a stack location that contains a 20467754Smsmith * ptr to an internal object. 20577424Smsmith * WalkState - Current method state 20667754Smsmith * 20767754Smsmith * RETURN: Status 20867754Smsmith * 20967754Smsmith * DESCRIPTION: Retrieve the value from an internal object. The Reference type 21067754Smsmith * uses the associated AML opcode to determine the value. 21167754Smsmith * 21267754Smsmith ******************************************************************************/ 21367754Smsmith 21467754SmsmithACPI_STATUS 21577424SmsmithAcpiExResolveObjectToValue ( 21667754Smsmith ACPI_OPERAND_OBJECT **StackPtr, 21767754Smsmith ACPI_WALK_STATE *WalkState) 21867754Smsmith{ 21977424Smsmith ACPI_STATUS Status = AE_OK; 22067754Smsmith ACPI_OPERAND_OBJECT *StackDesc; 22177424Smsmith void *TempNode; 22277424Smsmith ACPI_OPERAND_OBJECT *ObjDesc; 22367754Smsmith UINT16 Opcode; 22467754Smsmith 22567754Smsmith 22691116Smsmith ACPI_FUNCTION_TRACE ("ExResolveObjectToValue"); 22767754Smsmith 22867754Smsmith 22967754Smsmith StackDesc = *StackPtr; 23067754Smsmith 23167754Smsmith /* This is an ACPI_OPERAND_OBJECT */ 23267754Smsmith 23367754Smsmith switch (StackDesc->Common.Type) 23467754Smsmith { 23567754Smsmith case INTERNAL_TYPE_REFERENCE: 23667754Smsmith 23777424Smsmith Opcode = StackDesc->Reference.Opcode; 23867754Smsmith 23967754Smsmith switch (Opcode) 24067754Smsmith { 24167754Smsmith case AML_NAME_OP: 24267754Smsmith 24367754Smsmith /* 24467754Smsmith * Convert indirect name ptr to a direct name ptr. 24577424Smsmith * Then, AcpiExResolveNodeToValue can be used to get the value 24667754Smsmith */ 24777424Smsmith TempNode = StackDesc->Reference.Object; 24867754Smsmith 24967754Smsmith /* Delete the Reference Object */ 25067754Smsmith 25177424Smsmith AcpiUtRemoveReference (StackDesc); 25267754Smsmith 25367754Smsmith /* Put direct name pointer onto stack and exit */ 25467754Smsmith 25577424Smsmith (*StackPtr) = TempNode; 25667754Smsmith break; 25767754Smsmith 25867754Smsmith 25967754Smsmith case AML_LOCAL_OP: 26077424Smsmith case AML_ARG_OP: 26167754Smsmith 26267754Smsmith /* 26367754Smsmith * Get the local from the method's state info 26467754Smsmith * Note: this increments the local's object reference count 26567754Smsmith */ 26677424Smsmith Status = AcpiDsMethodDataGetValue (Opcode, 26777424Smsmith StackDesc->Reference.Offset, WalkState, &ObjDesc); 26867754Smsmith if (ACPI_FAILURE (Status)) 26967754Smsmith { 27067754Smsmith return_ACPI_STATUS (Status); 27167754Smsmith } 27267754Smsmith 27367754Smsmith /* 27467754Smsmith * Now we can delete the original Reference Object and 27567754Smsmith * replace it with the resolve value 27667754Smsmith */ 27777424Smsmith AcpiUtRemoveReference (StackDesc); 27867754Smsmith *StackPtr = ObjDesc; 27967754Smsmith 28082367Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "[Arg/Local %d] ValueObj is %p\n", 28177424Smsmith StackDesc->Reference.Offset, ObjDesc)); 28267754Smsmith break; 28367754Smsmith 28467754Smsmith /* 28584491Smsmith * For constants, we must change the reference/constant object 28684491Smsmith * to a real integer object 28767754Smsmith */ 28867754Smsmith case AML_ZERO_OP: 28984491Smsmith case AML_ONE_OP: 29084491Smsmith case AML_ONES_OP: 29184491Smsmith case AML_REVISION_OP: 29267754Smsmith 29384491Smsmith /* Create a new integer object */ 29467754Smsmith 29584491Smsmith ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 29684491Smsmith if (!ObjDesc) 29784491Smsmith { 29884491Smsmith return_ACPI_STATUS (AE_NO_MEMORY); 29984491Smsmith } 30067754Smsmith 30184491Smsmith switch (Opcode) 30284491Smsmith { 30384491Smsmith case AML_ZERO_OP: 30484491Smsmith ObjDesc->Integer.Value = 0; 30584491Smsmith break; 30667754Smsmith 30784491Smsmith case AML_ONE_OP: 30884491Smsmith ObjDesc->Integer.Value = 1; 30984491Smsmith break; 31067754Smsmith 31184491Smsmith case AML_ONES_OP: 31284491Smsmith ObjDesc->Integer.Value = ACPI_INTEGER_MAX; 31367754Smsmith 31484491Smsmith /* Truncate value if we are executing from a 32-bit ACPI table */ 31567754Smsmith 31684491Smsmith AcpiExTruncateFor32bitTable (ObjDesc, WalkState); 31784491Smsmith break; 31869450Smsmith 31984491Smsmith case AML_REVISION_OP: 32085756Smsmith ObjDesc->Integer.Value = ACPI_CA_SUPPORT_LEVEL; 32184491Smsmith break; 32284491Smsmith } 32369450Smsmith 32487031Smsmith /* 32584491Smsmith * Remove a reference from the original reference object 32684491Smsmith * and put the new object in its place 32784491Smsmith */ 32884491Smsmith AcpiUtRemoveReference (StackDesc); 32984491Smsmith *StackPtr = ObjDesc; 33067754Smsmith break; 33167754Smsmith 33267754Smsmith 33367754Smsmith case AML_INDEX_OP: 33467754Smsmith 33567754Smsmith switch (StackDesc->Reference.TargetType) 33667754Smsmith { 33767754Smsmith case ACPI_TYPE_BUFFER_FIELD: 33867754Smsmith 33967754Smsmith /* Just return - leave the Reference on the stack */ 34067754Smsmith break; 34167754Smsmith 34267754Smsmith 34367754Smsmith case ACPI_TYPE_PACKAGE: 34467754Smsmith ObjDesc = *StackDesc->Reference.Where; 34567754Smsmith if (ObjDesc) 34667754Smsmith { 34767754Smsmith /* 34867754Smsmith * Valid obj descriptor, copy pointer to return value 34967754Smsmith * (i.e., dereference the package index) 35067754Smsmith * Delete the ref object, increment the returned object 35167754Smsmith */ 35277424Smsmith AcpiUtRemoveReference (StackDesc); 35377424Smsmith AcpiUtAddReference (ObjDesc); 35467754Smsmith *StackPtr = ObjDesc; 35567754Smsmith } 35667754Smsmith else 35767754Smsmith { 35867754Smsmith /* 35967754Smsmith * A NULL object descriptor means an unitialized element of 36077424Smsmith * the package, can't dereference it 36167754Smsmith */ 36282367Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 36383174Smsmith "Attempt to deref an Index to NULL pkg element Idx=%p\n", 36477424Smsmith StackDesc)); 36567754Smsmith Status = AE_AML_UNINITIALIZED_ELEMENT; 36667754Smsmith } 36767754Smsmith break; 36867754Smsmith 36967754Smsmith default: 37077424Smsmith /* Invalid reference object */ 37167754Smsmith 37282367Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 37382367Smsmith "Unknown TargetType %X in Index/Reference obj %p\n", 37467754Smsmith StackDesc->Reference.TargetType, StackDesc)); 37567754Smsmith Status = AE_AML_INTERNAL; 37667754Smsmith break; 37767754Smsmith } 37867754Smsmith break; 37967754Smsmith 38067754Smsmith 38167754Smsmith case AML_DEBUG_OP: 38267754Smsmith 38367754Smsmith /* Just leave the object as-is */ 38467754Smsmith break; 38567754Smsmith 38667754Smsmith 38767754Smsmith default: 38867754Smsmith 38982367Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Reference object subtype %02X in %p\n", 39067754Smsmith Opcode, StackDesc)); 39167754Smsmith Status = AE_AML_INTERNAL; 39277424Smsmith break; 39367754Smsmith 39467754Smsmith } /* switch (Opcode) */ 39567754Smsmith 39667754Smsmith break; /* case INTERNAL_TYPE_REFERENCE */ 39767754Smsmith 39887031Smsmith /* 39991116Smsmith * These cases may never happen here, but just in case.. 40087031Smsmith */ 40177424Smsmith case ACPI_TYPE_BUFFER_FIELD: 40287031Smsmith case INTERNAL_TYPE_REGION_FIELD: 40367754Smsmith case INTERNAL_TYPE_BANK_FIELD: 40487031Smsmith case INTERNAL_TYPE_INDEX_FIELD: 40567754Smsmith 40687031Smsmith ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "FieldRead SourceDesc=%p Type=%X\n", 40787031Smsmith StackDesc, StackDesc->Common.Type)); 40867754Smsmith 40987031Smsmith Status = AcpiExReadDataFromField (StackDesc, &ObjDesc); 41067754Smsmith *StackPtr = (void *) ObjDesc; 41167754Smsmith break; 41267754Smsmith 41367754Smsmith default: 41467754Smsmith break; 41587031Smsmith } 41667754Smsmith 41767754Smsmith return_ACPI_STATUS (Status); 41867754Smsmith} 41967754Smsmith 42067754Smsmith 421