0,0 → 1,652 |
|
/****************************************************************************** |
* |
* Module Name: exresolv - AML Interpreter object resolution |
* |
*****************************************************************************/ |
|
/****************************************************************************** |
* |
* 1. Copyright Notice |
* |
* Some or all of this work - Copyright (c) 1999 - 2010, 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 __EXRESOLV_C__ |
|
#include "acpi.h" |
#include "accommon.h" |
#include "amlcode.h" |
#include "acdispat.h" |
#include "acinterp.h" |
#include "acnamesp.h" |
|
|
#define _COMPONENT ACPI_EXECUTER |
ACPI_MODULE_NAME ("exresolv") |
|
/* Local prototypes */ |
|
static ACPI_STATUS |
AcpiExResolveObjectToValue ( |
ACPI_OPERAND_OBJECT **StackPtr, |
ACPI_WALK_STATE *WalkState); |
|
|
/******************************************************************************* |
* |
* FUNCTION: AcpiExResolveToValue |
* |
* PARAMETERS: **StackPtr - Points to entry on ObjStack, which can |
* be either an (ACPI_OPERAND_OBJECT *) |
* or an ACPI_HANDLE. |
* WalkState - Current method state |
* |
* RETURN: Status |
* |
* DESCRIPTION: Convert Reference objects to values |
* |
******************************************************************************/ |
|
ACPI_STATUS |
AcpiExResolveToValue ( |
ACPI_OPERAND_OBJECT **StackPtr, |
ACPI_WALK_STATE *WalkState) |
{ |
ACPI_STATUS Status; |
|
|
ACPI_FUNCTION_TRACE_PTR (ExResolveToValue, StackPtr); |
|
|
if (!StackPtr || !*StackPtr) |
{ |
ACPI_ERROR ((AE_INFO, "Internal - null pointer")); |
return_ACPI_STATUS (AE_AML_NO_OPERAND); |
} |
|
/* |
* The entity pointed to by the StackPtr can be either |
* 1) A valid ACPI_OPERAND_OBJECT, or |
* 2) A ACPI_NAMESPACE_NODE (NamedObj) |
*/ |
if (ACPI_GET_DESCRIPTOR_TYPE (*StackPtr) == ACPI_DESC_TYPE_OPERAND) |
{ |
Status = AcpiExResolveObjectToValue (StackPtr, WalkState); |
if (ACPI_FAILURE (Status)) |
{ |
return_ACPI_STATUS (Status); |
} |
|
if (!*StackPtr) |
{ |
ACPI_ERROR ((AE_INFO, "Internal - null pointer")); |
return_ACPI_STATUS (AE_AML_NO_OPERAND); |
} |
} |
|
/* |
* Object on the stack may have changed if AcpiExResolveObjectToValue() |
* was called (i.e., we can't use an _else_ here.) |
*/ |
if (ACPI_GET_DESCRIPTOR_TYPE (*StackPtr) == ACPI_DESC_TYPE_NAMED) |
{ |
Status = AcpiExResolveNodeToValue ( |
ACPI_CAST_INDIRECT_PTR (ACPI_NAMESPACE_NODE, StackPtr), |
WalkState); |
if (ACPI_FAILURE (Status)) |
{ |
return_ACPI_STATUS (Status); |
} |
} |
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Resolved object %p\n", *StackPtr)); |
return_ACPI_STATUS (AE_OK); |
} |
|
|
/******************************************************************************* |
* |
* FUNCTION: AcpiExResolveObjectToValue |
* |
* PARAMETERS: StackPtr - Pointer to an internal object |
* WalkState - Current method state |
* |
* RETURN: Status |
* |
* DESCRIPTION: Retrieve the value from an internal object. The Reference type |
* uses the associated AML opcode to determine the value. |
* |
******************************************************************************/ |
|
static ACPI_STATUS |
AcpiExResolveObjectToValue ( |
ACPI_OPERAND_OBJECT **StackPtr, |
ACPI_WALK_STATE *WalkState) |
{ |
ACPI_STATUS Status = AE_OK; |
ACPI_OPERAND_OBJECT *StackDesc; |
ACPI_OPERAND_OBJECT *ObjDesc = NULL; |
UINT8 RefType; |
|
|
ACPI_FUNCTION_TRACE (ExResolveObjectToValue); |
|
|
StackDesc = *StackPtr; |
|
/* This is an ACPI_OPERAND_OBJECT */ |
|
switch (StackDesc->Common.Type) |
{ |
case ACPI_TYPE_LOCAL_REFERENCE: |
|
RefType = StackDesc->Reference.Class; |
|
switch (RefType) |
{ |
case ACPI_REFCLASS_LOCAL: |
case ACPI_REFCLASS_ARG: |
|
/* |
* Get the local from the method's state info |
* Note: this increments the local's object reference count |
*/ |
Status = AcpiDsMethodDataGetValue (RefType, |
StackDesc->Reference.Value, WalkState, &ObjDesc); |
if (ACPI_FAILURE (Status)) |
{ |
return_ACPI_STATUS (Status); |
} |
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Arg/Local %X] ValueObj is %p\n", |
StackDesc->Reference.Value, ObjDesc)); |
|
/* |
* Now we can delete the original Reference Object and |
* replace it with the resolved value |
*/ |
AcpiUtRemoveReference (StackDesc); |
*StackPtr = ObjDesc; |
break; |
|
|
case ACPI_REFCLASS_INDEX: |
|
switch (StackDesc->Reference.TargetType) |
{ |
case ACPI_TYPE_BUFFER_FIELD: |
|
/* Just return - do not dereference */ |
break; |
|
|
case ACPI_TYPE_PACKAGE: |
|
/* If method call or CopyObject - do not dereference */ |
|
if ((WalkState->Opcode == AML_INT_METHODCALL_OP) || |
(WalkState->Opcode == AML_COPY_OP)) |
{ |
break; |
} |
|
/* Otherwise, dereference the PackageIndex to a package element */ |
|
ObjDesc = *StackDesc->Reference.Where; |
if (ObjDesc) |
{ |
/* |
* Valid object descriptor, copy pointer to return value |
* (i.e., dereference the package index) |
* Delete the ref object, increment the returned object |
*/ |
AcpiUtRemoveReference (StackDesc); |
AcpiUtAddReference (ObjDesc); |
*StackPtr = ObjDesc; |
} |
else |
{ |
/* |
* A NULL object descriptor means an uninitialized element of |
* the package, can't dereference it |
*/ |
ACPI_ERROR ((AE_INFO, |
"Attempt to dereference an Index to NULL package element Idx=%p", |
StackDesc)); |
Status = AE_AML_UNINITIALIZED_ELEMENT; |
} |
break; |
|
|
default: |
|
/* Invalid reference object */ |
|
ACPI_ERROR ((AE_INFO, |
"Unknown TargetType 0x%X in Index/Reference object %p", |
StackDesc->Reference.TargetType, StackDesc)); |
Status = AE_AML_INTERNAL; |
break; |
} |
break; |
|
|
case ACPI_REFCLASS_REFOF: |
case ACPI_REFCLASS_DEBUG: |
case ACPI_REFCLASS_TABLE: |
|
/* Just leave the object as-is, do not dereference */ |
|
break; |
|
case ACPI_REFCLASS_NAME: /* Reference to a named object */ |
|
/* Dereference the name */ |
|
if ((StackDesc->Reference.Node->Type == ACPI_TYPE_DEVICE) || |
(StackDesc->Reference.Node->Type == ACPI_TYPE_THERMAL)) |
{ |
/* These node types do not have 'real' subobjects */ |
|
*StackPtr = (void *) StackDesc->Reference.Node; |
} |
else |
{ |
/* Get the object pointed to by the namespace node */ |
|
*StackPtr = (StackDesc->Reference.Node)->Object; |
AcpiUtAddReference (*StackPtr); |
} |
|
AcpiUtRemoveReference (StackDesc); |
break; |
|
default: |
|
ACPI_ERROR ((AE_INFO, |
"Unknown Reference type 0x%X in %p", RefType, StackDesc)); |
Status = AE_AML_INTERNAL; |
break; |
} |
break; |
|
|
case ACPI_TYPE_BUFFER: |
|
Status = AcpiDsGetBufferArguments (StackDesc); |
break; |
|
|
case ACPI_TYPE_PACKAGE: |
|
Status = AcpiDsGetPackageArguments (StackDesc); |
break; |
|
|
case ACPI_TYPE_BUFFER_FIELD: |
case ACPI_TYPE_LOCAL_REGION_FIELD: |
case ACPI_TYPE_LOCAL_BANK_FIELD: |
case ACPI_TYPE_LOCAL_INDEX_FIELD: |
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "FieldRead SourceDesc=%p Type=%X\n", |
StackDesc, StackDesc->Common.Type)); |
|
Status = AcpiExReadDataFromField (WalkState, StackDesc, &ObjDesc); |
|
/* Remove a reference to the original operand, then override */ |
|
AcpiUtRemoveReference (*StackPtr); |
*StackPtr = (void *) ObjDesc; |
break; |
|
default: |
break; |
} |
|
return_ACPI_STATUS (Status); |
} |
|
|
/******************************************************************************* |
* |
* FUNCTION: AcpiExResolveMultiple |
* |
* PARAMETERS: WalkState - Current state (contains AML opcode) |
* Operand - Starting point for resolution |
* ReturnType - Where the object type is returned |
* ReturnDesc - Where the resolved object is returned |
* |
* RETURN: Status |
* |
* DESCRIPTION: Return the base object and type. Traverse a reference list if |
* necessary to get to the base object. |
* |
******************************************************************************/ |
|
ACPI_STATUS |
AcpiExResolveMultiple ( |
ACPI_WALK_STATE *WalkState, |
ACPI_OPERAND_OBJECT *Operand, |
ACPI_OBJECT_TYPE *ReturnType, |
ACPI_OPERAND_OBJECT **ReturnDesc) |
{ |
ACPI_OPERAND_OBJECT *ObjDesc = (void *) Operand; |
ACPI_NAMESPACE_NODE *Node; |
ACPI_OBJECT_TYPE Type; |
ACPI_STATUS Status; |
|
|
ACPI_FUNCTION_TRACE (AcpiExResolveMultiple); |
|
|
/* Operand can be either a namespace node or an operand descriptor */ |
|
switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc)) |
{ |
case ACPI_DESC_TYPE_OPERAND: |
Type = ObjDesc->Common.Type; |
break; |
|
case ACPI_DESC_TYPE_NAMED: |
Type = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type; |
ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc); |
|
/* If we had an Alias node, use the attached object for type info */ |
|
if (Type == ACPI_TYPE_LOCAL_ALIAS) |
{ |
Type = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type; |
ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc); |
} |
break; |
|
default: |
return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
} |
|
/* If type is anything other than a reference, we are done */ |
|
if (Type != ACPI_TYPE_LOCAL_REFERENCE) |
{ |
goto Exit; |
} |
|
/* |
* For reference objects created via the RefOf, Index, or Load/LoadTable |
* operators, we need to get to the base object (as per the ACPI |
* specification of the ObjectType and SizeOf operators). This means |
* traversing the list of possibly many nested references. |
*/ |
while (ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) |
{ |
switch (ObjDesc->Reference.Class) |
{ |
case ACPI_REFCLASS_REFOF: |
case ACPI_REFCLASS_NAME: |
|
/* Dereference the reference pointer */ |
|
if (ObjDesc->Reference.Class == ACPI_REFCLASS_REFOF) |
{ |
Node = ObjDesc->Reference.Object; |
} |
else /* AML_INT_NAMEPATH_OP */ |
{ |
Node = ObjDesc->Reference.Node; |
} |
|
/* All "References" point to a NS node */ |
|
if (ACPI_GET_DESCRIPTOR_TYPE (Node) != ACPI_DESC_TYPE_NAMED) |
{ |
ACPI_ERROR ((AE_INFO, |
"Not a namespace node %p [%s]", |
Node, AcpiUtGetDescriptorName (Node))); |
return_ACPI_STATUS (AE_AML_INTERNAL); |
} |
|
/* Get the attached object */ |
|
ObjDesc = AcpiNsGetAttachedObject (Node); |
if (!ObjDesc) |
{ |
/* No object, use the NS node type */ |
|
Type = AcpiNsGetType (Node); |
goto Exit; |
} |
|
/* Check for circular references */ |
|
if (ObjDesc == Operand) |
{ |
return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE); |
} |
break; |
|
|
case ACPI_REFCLASS_INDEX: |
|
/* Get the type of this reference (index into another object) */ |
|
Type = ObjDesc->Reference.TargetType; |
if (Type != ACPI_TYPE_PACKAGE) |
{ |
goto Exit; |
} |
|
/* |
* The main object is a package, we want to get the type |
* of the individual package element that is referenced by |
* the index. |
* |
* This could of course in turn be another reference object. |
*/ |
ObjDesc = *(ObjDesc->Reference.Where); |
if (!ObjDesc) |
{ |
/* NULL package elements are allowed */ |
|
Type = 0; /* Uninitialized */ |
goto Exit; |
} |
break; |
|
|
case ACPI_REFCLASS_TABLE: |
|
Type = ACPI_TYPE_DDB_HANDLE; |
goto Exit; |
|
|
case ACPI_REFCLASS_LOCAL: |
case ACPI_REFCLASS_ARG: |
|
if (ReturnDesc) |
{ |
Status = AcpiDsMethodDataGetValue (ObjDesc->Reference.Class, |
ObjDesc->Reference.Value, WalkState, &ObjDesc); |
if (ACPI_FAILURE (Status)) |
{ |
return_ACPI_STATUS (Status); |
} |
AcpiUtRemoveReference (ObjDesc); |
} |
else |
{ |
Status = AcpiDsMethodDataGetNode (ObjDesc->Reference.Class, |
ObjDesc->Reference.Value, WalkState, &Node); |
if (ACPI_FAILURE (Status)) |
{ |
return_ACPI_STATUS (Status); |
} |
|
ObjDesc = AcpiNsGetAttachedObject (Node); |
if (!ObjDesc) |
{ |
Type = ACPI_TYPE_ANY; |
goto Exit; |
} |
} |
break; |
|
|
case ACPI_REFCLASS_DEBUG: |
|
/* The Debug Object is of type "DebugObject" */ |
|
Type = ACPI_TYPE_DEBUG_OBJECT; |
goto Exit; |
|
|
default: |
|
ACPI_ERROR ((AE_INFO, |
"Unknown Reference Class 0x%2.2X", ObjDesc->Reference.Class)); |
return_ACPI_STATUS (AE_AML_INTERNAL); |
} |
} |
|
/* |
* Now we are guaranteed to have an object that has not been created |
* via the RefOf or Index operators. |
*/ |
Type = ObjDesc->Common.Type; |
|
|
Exit: |
/* Convert internal types to external types */ |
|
switch (Type) |
{ |
case ACPI_TYPE_LOCAL_REGION_FIELD: |
case ACPI_TYPE_LOCAL_BANK_FIELD: |
case ACPI_TYPE_LOCAL_INDEX_FIELD: |
|
Type = ACPI_TYPE_FIELD_UNIT; |
break; |
|
case ACPI_TYPE_LOCAL_SCOPE: |
|
/* Per ACPI Specification, Scope is untyped */ |
|
Type = ACPI_TYPE_ANY; |
break; |
|
default: |
/* No change to Type required */ |
break; |
} |
|
*ReturnType = Type; |
if (ReturnDesc) |
{ |
*ReturnDesc = ObjDesc; |
} |
return_ACPI_STATUS (AE_OK); |
} |
|
|