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c846686064
freebsd/sys/contrib/dev/acpica/dswload.c
Mark Santcroos c846686064 Vendor import of Intel ACPI-CA 20041119
2004-12-01 23:14:10 +00:00

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/******************************************************************************
*
* Module Name: dswload - Dispatcher namespace load callbacks
* $Revision: 88 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2004, 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 __DSWLOAD_C__
#include "acpi.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acevents.h"
#ifdef _ACPI_ASL_COMPILER
#include "acdisasm.h"
#endif
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dswload")
/*******************************************************************************
*
* FUNCTION: AcpiDsInitCallbacks
*
* PARAMETERS: WalkState - Current state of the parse tree walk
* PassNumber - 1, 2, or 3
*
* RETURN: Status
*
* DESCRIPTION: Init walk state callbacks
*
******************************************************************************/
ACPI_STATUS
AcpiDsInitCallbacks (
ACPI_WALK_STATE *WalkState,
UINT32 PassNumber)
{
switch (PassNumber)
{
case 1:
WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE;
WalkState->DescendingCallback = AcpiDsLoad1BeginOp;
WalkState->AscendingCallback = AcpiDsLoad1EndOp;
break;
case 2:
WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE;
WalkState->DescendingCallback = AcpiDsLoad2BeginOp;
WalkState->AscendingCallback = AcpiDsLoad2EndOp;
break;
case 3:
#ifndef ACPI_NO_METHOD_EXECUTION
WalkState->ParseFlags |= ACPI_PARSE_EXECUTE | ACPI_PARSE_DELETE_TREE;
WalkState->DescendingCallback = AcpiDsExecBeginOp;
WalkState->AscendingCallback = AcpiDsExecEndOp;
#endif
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsLoad1BeginOp
*
* PARAMETERS: WalkState - Current state of the parse tree walk
* Op - Op that has been just been reached in the
* walk; Arguments have not been evaluated yet.
*
* RETURN: Status
*
* DESCRIPTION: Descending callback used during the loading of ACPI tables.
*
******************************************************************************/
ACPI_STATUS
AcpiDsLoad1BeginOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT **OutOp)
{
ACPI_PARSE_OBJECT *Op;
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_OBJECT_TYPE ObjectType;
char *Path;
UINT32 Flags;
ACPI_FUNCTION_NAME ("DsLoad1BeginOp");
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
/* We are only interested in opcodes that have an associated name */
if (Op)
{
if (!(WalkState->OpInfo->Flags & AML_NAMED))
{
#if 0
if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) ||
(WalkState->OpInfo->Class == AML_CLASS_CONTROL))
{
AcpiOsPrintf ("\n\n***EXECUTABLE OPCODE %s***\n\n", WalkState->OpInfo->Name);
*OutOp = Op;
return (AE_CTRL_SKIP);
}
#endif
*OutOp = Op;
return (AE_OK);
}
/* Check if this object has already been installed in the namespace */
if (Op->Common.Node)
{
*OutOp = Op;
return (AE_OK);
}
}
Path = AcpiPsGetNextNamestring (&WalkState->ParserState);
/* Map the raw opcode into an internal object type */
ObjectType = WalkState->OpInfo->ObjectType;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType)));
switch (WalkState->Opcode)
{
case AML_SCOPE_OP:
/*
* The target name of the Scope() operator must exist at this point so
* that we can actually open the scope to enter new names underneath it.
* Allow search-to-root for single namesegs.
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
#ifdef _ACPI_ASL_COMPILER
if (Status == AE_NOT_FOUND)
{
/*
* Table disassembly:
* Target of Scope() not found. Generate an External for it, and
* insert the name into the namespace.
*/
AcpiDmAddToExternalList (Path);
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
}
#endif
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_NSERROR (Path, Status);
return (Status);
}
/*
* Check to make sure that the target is
* one of the opcodes that actually opens a scope
*/
switch (Node->Type)
{
case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* These are acceptable types */
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*
* Note: silently change the type here. On the second pass, we will report a warning
*/
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
Path, AcpiUtGetTypeName (Node->Type)));
Node->Type = ACPI_TYPE_ANY;
WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
break;
default:
/* All other types are an error */
ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n",
AcpiUtGetTypeName (Node->Type), Path));
return (AE_AML_OPERAND_TYPE);
}
break;
default:
/*
* For all other named opcodes, we will enter the name into the namespace.
*
* Setup the search flags.
* Since we are entering a name into the namespace, we do not want to
* enable the search-to-root upsearch.
*
* There are only two conditions where it is acceptable that the name
* already exists:
* 1) the Scope() operator can reopen a scoping object that was
* previously defined (Scope, Method, Device, etc.)
* 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer,
* BufferField, or Package), the name of the object is already
* in the namespace.
*/
if (WalkState->DeferredNode)
{
/* This name is already in the namespace, get the node */
Node = WalkState->DeferredNode;
Status = AE_OK;
break;
}
Flags = ACPI_NS_NO_UPSEARCH;
if ((WalkState->Opcode != AML_SCOPE_OP) &&
(!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP)))
{
Flags |= ACPI_NS_ERROR_IF_FOUND;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n",
AcpiUtGetTypeName (ObjectType)));
}
else
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Both Find or Create allowed\n",
AcpiUtGetTypeName (ObjectType)));
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that involve
* arguments to the opcode must be created as we go back up the parse tree later.
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node));
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_NSERROR (Path, Status);
return (Status);
}
break;
}
/* Common exit */
if (!Op)
{
/* Create a new op */
Op = AcpiPsAllocOp (WalkState->Opcode);
if (!Op)
{
return (AE_NO_MEMORY);
}
}
/* Initialize */
Op->Named.Name = Node->Name.Integer;
#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY))
Op->Named.Path = (UINT8 *) Path;
#endif
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
Op->Common.Node = Node;
AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op);
*OutOp = Op;
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsLoad1EndOp
*
* PARAMETERS: WalkState - Current state of the parse tree walk
* Op - Op that has been just been completed in the
* walk; Arguments have now been evaluated.
*
* RETURN: Status
*
* DESCRIPTION: Ascending callback used during the loading of the namespace,
* both control methods and everything else.
*
******************************************************************************/
ACPI_STATUS
AcpiDsLoad1EndOp (
ACPI_WALK_STATE *WalkState)
{
ACPI_PARSE_OBJECT *Op;
ACPI_OBJECT_TYPE ObjectType;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_NAME ("DsLoad1EndOp");
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
/* We are only interested in opcodes that have an associated name */
if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD)))
{
return (AE_OK);
}
/* Get the object type to determine if we should pop the scope */
ObjectType = WalkState->OpInfo->ObjectType;
#ifndef ACPI_NO_METHOD_EXECUTION
if (WalkState->OpInfo->Flags & AML_FIELD)
{
if (WalkState->Opcode == AML_FIELD_OP ||
WalkState->Opcode == AML_BANK_FIELD_OP ||
WalkState->Opcode == AML_INDEX_FIELD_OP)
{
Status = AcpiDsInitFieldObjects (Op, WalkState);
}
return (Status);
}
if (Op->Common.AmlOpcode == AML_REGION_OP)
{
Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
(ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer), WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
#endif
if (Op->Common.AmlOpcode == AML_NAME_OP)
{
/* For Name opcode, get the object type from the argument */
if (Op->Common.Value.Arg)
{
ObjectType = (AcpiPsGetOpcodeInfo ((Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType;
Op->Common.Node->Type = (UINT8) ObjectType;
}
}
if (Op->Common.AmlOpcode == AML_METHOD_OP)
{
/*
* MethodOp PkgLength NameString MethodFlags TermList
*
* Note: We must create the method node/object pair as soon as we
* see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
WalkState, Op, Op->Named.Node));
if (!AcpiNsGetAttachedObject (Op->Named.Node))
{
WalkState->Operands[0] = (void *) Op->Named.Node;
WalkState->NumOperands = 1;
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
if (ACPI_SUCCESS (Status))
{
Status = AcpiExCreateMethod (Op->Named.Data,
Op->Named.Length, WalkState);
}
WalkState->Operands[0] = NULL;
WalkState->NumOperands = 0;
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
}
/* Pop the scope stack */
if (AcpiNsOpensScope (ObjectType))
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n",
AcpiUtGetTypeName (ObjectType), Op));
Status = AcpiDsScopeStackPop (WalkState);
}
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsLoad2BeginOp
*
* PARAMETERS: WalkState - Current state of the parse tree walk
* Op - Op that has been just been reached in the
* walk; Arguments have not been evaluated yet.
*
* RETURN: Status
*
* DESCRIPTION: Descending callback used during the loading of ACPI tables.
*
******************************************************************************/
ACPI_STATUS
AcpiDsLoad2BeginOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT **OutOp)
{
ACPI_PARSE_OBJECT *Op;
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_OBJECT_TYPE ObjectType;
char *BufferPtr;
ACPI_FUNCTION_TRACE ("DsLoad2BeginOp");
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
if (Op)
{
/* We only care about Namespace opcodes here */
if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
(!(WalkState->OpInfo->Flags & AML_NAMED)))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Get the name we are going to enter or lookup in the namespace
*/
if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
{
/* For Namepath op, get the path string */
BufferPtr = Op->Common.Value.String;
if (!BufferPtr)
{
/* No name, just exit */
return_ACPI_STATUS (AE_OK);
}
}
else
{
/* Get name from the op */
BufferPtr = (char *) &Op->Named.Name;
}
}
else
{
/* Get the namestring from the raw AML */
BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
}
/* Map the opcode into an internal object type */
ObjectType = WalkState->OpInfo->ObjectType;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
switch (WalkState->Opcode)
{
case AML_FIELD_OP:
case AML_BANK_FIELD_OP:
case AML_INDEX_FIELD_OP:
Node = NULL;
Status = AE_OK;
break;
case AML_INT_NAMEPATH_OP:
/*
* The NamePath is an object reference to an existing object. Don't enter the
* name into the namespace, but look it up for use later
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
break;
case AML_SCOPE_OP:
/*
* The Path is an object reference to an existing object. Don't enter the
* name into the namespace, but look it up for use later
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
if (ACPI_FAILURE (Status))
{
#ifdef _ACPI_ASL_COMPILER
if (Status == AE_NOT_FOUND)
{
Status = AE_OK;
}
else
{
ACPI_REPORT_NSERROR (BufferPtr, Status);
}
#else
ACPI_REPORT_NSERROR (BufferPtr, Status);
#endif
return_ACPI_STATUS (Status);
}
/*
* We must check to make sure that the target is
* one of the opcodes that actually opens a scope
*/
switch (Node->Type)
{
case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* These are acceptable types */
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*/
ACPI_REPORT_WARNING (("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
BufferPtr, AcpiUtGetTypeName (Node->Type)));
Node->Type = ACPI_TYPE_ANY;
WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
break;
default:
/* All other types are an error */
ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s]\n",
AcpiUtGetTypeName (Node->Type), BufferPtr));
return (AE_AML_OPERAND_TYPE);
}
break;
default:
/* All other opcodes */
if (Op && Op->Common.Node)
{
/* This op/node was previously entered into the namespace */
Node = Op->Common.Node;
if (AcpiNsOpensScope (ObjectType))
{
Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
return_ACPI_STATUS (AE_OK);
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that involve
* arguments to the opcode must be created as we go back up the parse tree later.
*
* Note: Name may already exist if we are executing a deferred opcode.
*/
if (WalkState->DeferredNode)
{
/* This name is already in the namespace, get the node */
Node = WalkState->DeferredNode;
Status = AE_OK;
break;
}
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, WalkState, &(Node));
break;
}
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_NSERROR (BufferPtr, Status);
return_ACPI_STATUS (Status);
}
if (!Op)
{
/* Create a new op */
Op = AcpiPsAllocOp (WalkState->Opcode);
if (!Op)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the new op */
if (Node)
{
Op->Named.Name = Node->Name.Integer;
}
if (OutOp)
{
*OutOp = Op;
}
}
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
Op->Common.Node = Node;
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsLoad2EndOp
*
* PARAMETERS: WalkState - Current state of the parse tree walk
* Op - Op that has been just been completed in the
* walk; Arguments have now been evaluated.
*
* RETURN: Status
*
* DESCRIPTION: Ascending callback used during the loading of the namespace,
* both control methods and everything else.
*
******************************************************************************/
ACPI_STATUS
AcpiDsLoad2EndOp (
ACPI_WALK_STATE *WalkState)
{
ACPI_PARSE_OBJECT *Op;
ACPI_STATUS Status = AE_OK;
ACPI_OBJECT_TYPE ObjectType;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *Arg;
ACPI_NAMESPACE_NODE *NewNode;
#ifndef ACPI_NO_METHOD_EXECUTION
UINT32 i;
#endif
ACPI_FUNCTION_TRACE ("DsLoad2EndOp");
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
WalkState->OpInfo->Name, Op, WalkState));
/* Only interested in opcodes that have namespace objects */
if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
{
return_ACPI_STATUS (AE_OK);
}
if (Op->Common.AmlOpcode == AML_SCOPE_OP)
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Ending scope Op=%p State=%p\n", Op, WalkState));
}
ObjectType = WalkState->OpInfo->ObjectType;
/*
* Get the Node/name from the earlier lookup
* (It was saved in the *op structure)
*/
Node = Op->Common.Node;
/*
* Put the Node on the object stack (Contains the ACPI Name of
* this object)
*/
WalkState->Operands[0] = (void *) Node;
WalkState->NumOperands = 1;
/* Pop the scope stack */
if (AcpiNsOpensScope (ObjectType) && (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
AcpiUtGetTypeName (ObjectType), Op));
Status = AcpiDsScopeStackPop (WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
}
/*
* Named operations are as follows:
*
* AML_ALIAS
* AML_BANKFIELD
* AML_CREATEBITFIELD
* AML_CREATEBYTEFIELD
* AML_CREATEDWORDFIELD
* AML_CREATEFIELD
* AML_CREATEQWORDFIELD
* AML_CREATEWORDFIELD
* AML_DATA_REGION
* AML_DEVICE
* AML_EVENT
* AML_FIELD
* AML_INDEXFIELD
* AML_METHOD
* AML_METHODCALL
* AML_MUTEX
* AML_NAME
* AML_NAMEDFIELD
* AML_OPREGION
* AML_POWERRES
* AML_PROCESSOR
* AML_SCOPE
* AML_THERMALZONE
*/
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
/* Decode the opcode */
Arg = Op->Common.Value.Arg;
switch (WalkState->OpInfo->Type)
{
#ifndef ACPI_NO_METHOD_EXECUTION
case AML_TYPE_CREATE_FIELD:
/*
* Create the field object, but the field buffer and index must
* be evaluated later during the execution phase
*/
Status = AcpiDsCreateBufferField (Op, WalkState);
break;
case AML_TYPE_NAMED_FIELD:
switch (Op->Common.AmlOpcode)
{
case AML_INDEX_FIELD_OP:
Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node,
WalkState);
break;
case AML_BANK_FIELD_OP:
Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
break;
case AML_FIELD_OP:
Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
break;
default:
/* All NAMED_FIELD opcodes must be handled above */
break;
}
break;
case AML_TYPE_NAMED_SIMPLE:
Status = AcpiDsCreateOperands (WalkState, Arg);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
switch (Op->Common.AmlOpcode)
{
case AML_PROCESSOR_OP:
Status = AcpiExCreateProcessor (WalkState);
break;
case AML_POWER_RES_OP:
Status = AcpiExCreatePowerResource (WalkState);
break;
case AML_MUTEX_OP:
Status = AcpiExCreateMutex (WalkState);
break;
case AML_EVENT_OP:
Status = AcpiExCreateEvent (WalkState);
break;
case AML_DATA_REGION_OP:
Status = AcpiExCreateTableRegion (WalkState);
break;
case AML_ALIAS_OP:
Status = AcpiExCreateAlias (WalkState);
break;
default:
/* Unknown opcode */
Status = AE_OK;
goto Cleanup;
}
/* Delete operands */
for (i = 1; i < WalkState->NumOperands; i++)
{
AcpiUtRemoveReference (WalkState->Operands[i]);
WalkState->Operands[i] = NULL;
}
break;
#endif /* ACPI_NO_METHOD_EXECUTION */
case AML_TYPE_NAMED_COMPLEX:
switch (Op->Common.AmlOpcode)
{
#ifndef ACPI_NO_METHOD_EXECUTION
case AML_REGION_OP:
/*
* The OpRegion is not fully parsed at this time. Only valid argument is the SpaceId.
* (We must save the address of the AML of the address and length operands)
*/
/*
* If we have a valid region, initialize it
* Namespace is NOT locked at this point.
*/
Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), FALSE);
if (ACPI_FAILURE (Status))
{
/*
* If AE_NOT_EXIST is returned, it is not fatal
* because many regions get created before a handler
* is installed for said region.
*/
if (AE_NOT_EXIST == Status)
{
Status = AE_OK;
}
}
break;
case AML_NAME_OP:
Status = AcpiDsCreateNode (WalkState, Node, Op);
break;
#endif /* ACPI_NO_METHOD_EXECUTION */
default:
/* All NAMED_COMPLEX opcodes must be handled above */
/* Note: Method objects were already created in Pass 1 */
break;
}
break;
case AML_CLASS_INTERNAL:
/* case AML_INT_NAMEPATH_OP: */
break;
case AML_CLASS_METHOD_CALL:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
WalkState, Op, Node));
/*
* Lookup the method name and save the Node
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
WalkState, &(NewNode));
if (ACPI_SUCCESS (Status))
{
/*
* Make sure that what we found is indeed a method
* We didn't search for a method on purpose, to see if the name would resolve
*/
if (NewNode->Type != ACPI_TYPE_METHOD)
{
Status = AE_AML_OPERAND_TYPE;
}
/* We could put the returned object (Node) on the object stack for later, but
* for now, we will put it in the "op" object that the parser uses, so we
* can get it again at the end of this scope
*/
Op->Common.Node = NewNode;
}
else
{
ACPI_REPORT_NSERROR (Arg->Common.Value.String, Status);
}
break;
default:
break;
}
Cleanup:
/* Remove the Node pushed at the very beginning */
WalkState->Operands[0] = NULL;
WalkState->NumOperands = 0;
return_ACPI_STATUS (Status);
}
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