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minix3/drivers/power/acpi/executer/excreate.c

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/******************************************************************************
*
* Module Name: excreate - Named object creation
*
*****************************************************************************/
/******************************************************************************
*
* 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 __EXCREATE_C__
#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME ("excreate")
#ifndef ACPI_NO_METHOD_EXECUTION
/*******************************************************************************
*
* FUNCTION: AcpiExCreateAlias
*
* PARAMETERS: WalkState - Current state, contains operands
*
* RETURN: Status
*
* DESCRIPTION: Create a new named alias
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateAlias (
ACPI_WALK_STATE *WalkState)
{
ACPI_NAMESPACE_NODE *TargetNode;
ACPI_NAMESPACE_NODE *AliasNode;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (ExCreateAlias);
/* Get the source/alias operands (both namespace nodes) */
AliasNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1];
if ((TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS) ||
(TargetNode->Type == ACPI_TYPE_LOCAL_METHOD_ALIAS))
{
/*
* Dereference an existing alias so that we don't create a chain
* of aliases. With this code, we guarantee that an alias is
* always exactly one level of indirection away from the
* actual aliased name.
*/
TargetNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, TargetNode->Object);
}
/*
* For objects that can never change (i.e., the NS node will
* permanently point to the same object), we can simply attach
* the object to the new NS node. For other objects (such as
* Integers, buffers, etc.), we have to point the Alias node
* to the original Node.
*/
switch (TargetNode->Type)
{
/* For these types, the sub-object can change dynamically via a Store */
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_BUFFER_FIELD:
/*
* These types open a new scope, so we need the NS node in order to access
* any children.
*/
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_LOCAL_SCOPE:
/*
* The new alias has the type ALIAS and points to the original
* NS node, not the object itself.
*/
AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS;
AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
break;
case ACPI_TYPE_METHOD:
/*
* Control method aliases need to be differentiated
*/
AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
break;
default:
/* Attach the original source object to the new Alias Node */
/*
* The new alias assumes the type of the target, and it points
* to the same object. The reference count of the object has an
* additional reference to prevent deletion out from under either the
* target node or the alias Node
*/
Status = AcpiNsAttachObject (AliasNode,
AcpiNsGetAttachedObject (TargetNode), TargetNode->Type);
break;
}
/* Since both operands are Nodes, we don't need to delete them */
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateEvent
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new event object
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateEvent (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE (ExCreateEvent);
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Create the actual OS semaphore, with zero initial units -- meaning
* that the event is created in an unsignalled state
*/
Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
&ObjDesc->Event.OsSemaphore);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Attach object to the Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0],
ObjDesc, ACPI_TYPE_EVENT);
Cleanup:
/*
* Remove local reference to the object (on error, will cause deletion
* of both object and semaphore if present.)
*/
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateMutex
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new mutex object
*
* Mutex (Name[0], SyncLevel[1])
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateMutex (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE_PTR (ExCreateMutex, ACPI_WALK_OPERANDS);
/* Create the new mutex object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Create the actual OS Mutex */
Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Init object and attach to NS node */
ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value;
ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
Status = AcpiNsAttachObject (ObjDesc->Mutex.Node, ObjDesc, ACPI_TYPE_MUTEX);
Cleanup:
/*
* Remove local reference to the object (on error, will cause deletion
* of both object and semaphore if present.)
*/
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateRegion
*
* PARAMETERS: AmlStart - Pointer to the region declaration AML
* AmlLength - Max length of the declaration AML
* RegionSpace - SpaceID for the region
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new operation region object
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateRegion (
UINT8 *AmlStart,
UINT32 AmlLength,
UINT8 RegionSpace,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_OPERAND_OBJECT *RegionObj2;
ACPI_FUNCTION_TRACE (ExCreateRegion);
/* Get the Namespace Node */
Node = WalkState->Op->Common.Node;
/*
* If the region object is already attached to this node,
* just return
*/
if (AcpiNsGetAttachedObject (Node))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Space ID must be one of the predefined IDs, or in the user-defined
* range
*/
if ((RegionSpace >= ACPI_NUM_PREDEFINED_REGIONS) &&
(RegionSpace < ACPI_USER_REGION_BEGIN))
{
ACPI_ERROR ((AE_INFO, "Invalid AddressSpace type 0x%X", RegionSpace));
return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID);
}
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
AcpiUtGetRegionName (RegionSpace), RegionSpace));
/* Create the region descriptor */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Remember location in AML stream of address & length
* operands since they need to be evaluated at run time.
*/
RegionObj2 = ObjDesc->Common.NextObject;
RegionObj2->Extra.AmlStart = AmlStart;
RegionObj2->Extra.AmlLength = AmlLength;
/* Init the region from the operands */
ObjDesc->Region.SpaceId = RegionSpace;
ObjDesc->Region.Address = 0;
ObjDesc->Region.Length = 0;
ObjDesc->Region.Node = Node;
/* Install the new region object in the parent Node */
Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION);
Cleanup:
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreateProcessor
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new processor object and populate the fields
*
* Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3])
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateProcessor (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE_PTR (ExCreateProcessor, WalkState);
/* Create the processor object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the processor object from the operands */
ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value;
ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value;
ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value;
/* Install the processor object in the parent Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
ObjDesc, ACPI_TYPE_PROCESSOR);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExCreatePowerResource
*
* PARAMETERS: WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new PowerResource object and populate the fields
*
* PowerResource (Name[0], SystemLevel[1], ResourceOrder[2])
*
******************************************************************************/
ACPI_STATUS
AcpiExCreatePowerResource (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE_PTR (ExCreatePowerResource, WalkState);
/* Create the power resource object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the power object from the operands */
ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value;
ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value;
/* Install the power resource object in the parent Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
ObjDesc, ACPI_TYPE_POWER);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiExCreateMethod
*
* PARAMETERS: AmlStart - First byte of the method's AML
* AmlLength - AML byte count for this method
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new method object
*
******************************************************************************/
ACPI_STATUS
AcpiExCreateMethod (
UINT8 *AmlStart,
UINT32 AmlLength,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
UINT8 MethodFlags;
ACPI_FUNCTION_TRACE_PTR (ExCreateMethod, WalkState);
/* Create a new method object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto Exit;
}
/* Save the method's AML pointer and length */
ObjDesc->Method.AmlStart = AmlStart;
ObjDesc->Method.AmlLength = AmlLength;
/*
* Disassemble the method flags. Split off the Arg Count
* for efficiency
*/
MethodFlags = (UINT8) Operand[1]->Integer.Value;
ObjDesc->Method.MethodFlags = (UINT8) (MethodFlags & ~AML_METHOD_ARG_COUNT);
ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & AML_METHOD_ARG_COUNT);
/*
* Get the SyncLevel. If method is serialized, a mutex will be
* created for this method when it is parsed.
*/
if (MethodFlags & AML_METHOD_SERIALIZED)
{
/*
* ACPI 1.0: SyncLevel = 0
* ACPI 2.0: SyncLevel = SyncLevel in method declaration
*/
ObjDesc->Method.SyncLevel = (UINT8)
((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4);
}
/* Attach the new object to the method Node */
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
ObjDesc, ACPI_TYPE_METHOD);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
Exit:
/* Remove a reference to the operand */
AcpiUtRemoveReference (Operand[1]);
return_ACPI_STATUS (Status);
}
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