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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sys/contrib/dev/acpica/dispatcher/dswload2.c |
/******************************************************************************
*
* Module Name: dswload2 - Dispatcher second pass namespace load callbacks
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#define __DSWLOAD2_C__
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acparser.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acdispat.h>
#include <contrib/dev/acpica/include/acinterp.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acevents.h>
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dswload2")
/*******************************************************************************
*
* FUNCTION: AcpiDsLoad2BeginOp
*
* PARAMETERS: WalkState - Current state of the parse tree walk
* OutOp - Wher to return op if a new one is created
*
* 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;
UINT32 Flags;
ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
if (Op)
{
if ((WalkState->ControlState) &&
(WalkState->ControlState->Common.State ==
ACPI_CONTROL_CONDITIONAL_EXECUTING))
{
/* We are executing a while loop outside of a method */
Status = AcpiDsExecBeginOp (WalkState, OutOp);
return_ACPI_STATUS (Status);
}
/* 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 = ACPI_CAST_PTR (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:
/* Special case for Scope(\) -> refers to the Root node */
if (Op && (Op->Named.Node == AcpiGbl_RootNode))
{
Node = Op->Named.Node;
Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
else
{
/*
* 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_ERROR_NAMESPACE (BufferPtr, Status);
}
#else
ACPI_ERROR_NAMESPACE (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_ANY:
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_WARNING ((AE_INFO,
"Type override - [%4.4s] had invalid type (%s) "
"for Scope operator, changed to type ANY\n",
AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
Node->Type = ACPI_TYPE_ANY;
WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
break;
default:
/* All other types are an error */
ACPI_ERROR ((AE_INFO,
"Invalid type (%s) for target of "
"Scope operator [%4.4s] (Cannot override)",
AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
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;
}
Flags = ACPI_NS_NO_UPSEARCH;
if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
{
/* Execution mode, node cannot already exist, node is temporary */
Flags |= ACPI_NS_ERROR_IF_FOUND;
if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
{
Flags |= ACPI_NS_TEMPORARY;
}
}
/* Add new entry or lookup existing entry */
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"***New Node [%4.4s] %p is temporary\n",
AcpiUtGetNodeName (Node), Node));
}
break;
}
if (ACPI_FAILURE (Status))
{
ACPI_ERROR_NAMESPACE (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;
}
*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
*
* 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;
UINT8 RegionSpace;
#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));
/* Check if opcode had an associated namespace object */
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:
/*
* If we are executing a method, initialize the field
*/
if (WalkState->MethodNode)
{
Status = AcpiDsInitFieldObjects (Op, WalkState);
}
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_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:
case AML_DATA_REGION_OP:
if (Op->Common.AmlOpcode == AML_REGION_OP)
{
RegionSpace = (ACPI_ADR_SPACE_TYPE)
((Op->Common.Value.Arg)->Common.Value.Integer);
}
else
{
RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
}
/*
* The OpRegion is not fully parsed at this time. The 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. The namespace is
* unlocked at this point.
*
* Need to unlock interpreter if it is locked (if we are running
* a control method), in order to allow _REG methods to be run
* during AcpiEvInitializeRegion.
*/
if (WalkState->MethodNode)
{
/*
* Executing a method: initialize the region and unlock
* the interpreter
*/
Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
RegionSpace, WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
AcpiExExitInterpreter ();
}
Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node),
FALSE);
if (WalkState->MethodNode)
{
AcpiExEnterInterpreter ();
}
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;
case 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] = ACPI_CAST_PTR (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_ACPI_STATUS (Status);
}
}
break;
#endif /* ACPI_NO_METHOD_EXECUTION */
default:
/* All NAMED_COMPLEX opcodes must be handled above */
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_ERROR_NAMESPACE (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);
}