461 lines
14 KiB
C
461 lines
14 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utstate - state object support procedures
|
|
* xRevision: 1.3 $
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2006, 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.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: utstate.c,v 1.1 2006/03/23 13:36:32 kochi Exp $");
|
|
|
|
#define __UTSTATE_C__
|
|
|
|
#include "acpi.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME ("utstate")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCreatePkgStateAndPush
|
|
*
|
|
* PARAMETERS: Object - Object to be added to the new state
|
|
* Action - Increment/Decrement
|
|
* StateList - List the state will be added to
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create a new state and push it
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtCreatePkgStateAndPush (
|
|
void *InternalObject,
|
|
void *ExternalObject,
|
|
UINT16 Index,
|
|
ACPI_GENERIC_STATE **StateList)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
State = AcpiUtCreatePkgState (InternalObject, ExternalObject, Index);
|
|
if (!State)
|
|
{
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
AcpiUtPushGenericState (StateList, State);
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtPushGenericState
|
|
*
|
|
* PARAMETERS: ListHead - Head of the state stack
|
|
* State - State object to push
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Push a state object onto a state stack
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtPushGenericState (
|
|
ACPI_GENERIC_STATE **ListHead,
|
|
ACPI_GENERIC_STATE *State)
|
|
{
|
|
ACPI_FUNCTION_TRACE ("UtPushGenericState");
|
|
|
|
|
|
/* Push the state object onto the front of the list (stack) */
|
|
|
|
State->Common.Next = *ListHead;
|
|
*ListHead = State;
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtPopGenericState
|
|
*
|
|
* PARAMETERS: ListHead - Head of the state stack
|
|
*
|
|
* RETURN: The popped state object
|
|
*
|
|
* DESCRIPTION: Pop a state object from a state stack
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_GENERIC_STATE *
|
|
AcpiUtPopGenericState (
|
|
ACPI_GENERIC_STATE **ListHead)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("UtPopGenericState");
|
|
|
|
|
|
/* Remove the state object at the head of the list (stack) */
|
|
|
|
State = *ListHead;
|
|
if (State)
|
|
{
|
|
/* Update the list head */
|
|
|
|
*ListHead = State->Common.Next;
|
|
}
|
|
|
|
return_PTR (State);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCreateGenericState
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: The new state object. NULL on failure.
|
|
*
|
|
* DESCRIPTION: Create a generic state object. Attempt to obtain one from
|
|
* the global state cache; If none available, create a new one.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_GENERIC_STATE *
|
|
AcpiUtCreateGenericState (
|
|
void)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
State = AcpiOsAcquireObject (AcpiGbl_StateCache);
|
|
if (State)
|
|
{
|
|
/* Initialize */
|
|
State->Common.DataType = ACPI_DESC_TYPE_STATE;
|
|
}
|
|
|
|
return (State);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCreateThreadState
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: New Thread State. NULL on failure
|
|
*
|
|
* DESCRIPTION: Create a "Thread State" - a flavor of the generic state used
|
|
* to track per-thread info during method execution
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_THREAD_STATE *
|
|
AcpiUtCreateThreadState (
|
|
void)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("UtCreateThreadState");
|
|
|
|
|
|
/* Create the generic state object */
|
|
|
|
State = AcpiUtCreateGenericState ();
|
|
if (!State)
|
|
{
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
/* Init fields specific to the update struct */
|
|
|
|
State->Common.DataType = ACPI_DESC_TYPE_STATE_THREAD;
|
|
State->Thread.ThreadId = AcpiOsGetThreadId ();
|
|
|
|
return_PTR ((ACPI_THREAD_STATE *) State);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCreateUpdateState
|
|
*
|
|
* PARAMETERS: Object - Initial Object to be installed in the state
|
|
* Action - Update action to be performed
|
|
*
|
|
* RETURN: New state object, null on failure
|
|
*
|
|
* DESCRIPTION: Create an "Update State" - a flavor of the generic state used
|
|
* to update reference counts and delete complex objects such
|
|
* as packages.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_GENERIC_STATE *
|
|
AcpiUtCreateUpdateState (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT16 Action)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("UtCreateUpdateState", Object);
|
|
|
|
|
|
/* Create the generic state object */
|
|
|
|
State = AcpiUtCreateGenericState ();
|
|
if (!State)
|
|
{
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
/* Init fields specific to the update struct */
|
|
|
|
State->Common.DataType = ACPI_DESC_TYPE_STATE_UPDATE;
|
|
State->Update.Object = Object;
|
|
State->Update.Value = Action;
|
|
|
|
return_PTR (State);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCreatePkgState
|
|
*
|
|
* PARAMETERS: Object - Initial Object to be installed in the state
|
|
* Action - Update action to be performed
|
|
*
|
|
* RETURN: New state object, null on failure
|
|
*
|
|
* DESCRIPTION: Create a "Package State"
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_GENERIC_STATE *
|
|
AcpiUtCreatePkgState (
|
|
void *InternalObject,
|
|
void *ExternalObject,
|
|
UINT16 Index)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("UtCreatePkgState", InternalObject);
|
|
|
|
|
|
/* Create the generic state object */
|
|
|
|
State = AcpiUtCreateGenericState ();
|
|
if (!State)
|
|
{
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
/* Init fields specific to the update struct */
|
|
|
|
State->Common.DataType = ACPI_DESC_TYPE_STATE_PACKAGE;
|
|
State->Pkg.SourceObject = (ACPI_OPERAND_OBJECT *) InternalObject;
|
|
State->Pkg.DestObject = ExternalObject;
|
|
State->Pkg.Index = Index;
|
|
State->Pkg.NumPackages = 1;
|
|
|
|
return_PTR (State);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCreateControlState
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: New state object, null on failure
|
|
*
|
|
* DESCRIPTION: Create a "Control State" - a flavor of the generic state used
|
|
* to support nested IF/WHILE constructs in the AML.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_GENERIC_STATE *
|
|
AcpiUtCreateControlState (
|
|
void)
|
|
{
|
|
ACPI_GENERIC_STATE *State;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("UtCreateControlState");
|
|
|
|
|
|
/* Create the generic state object */
|
|
|
|
State = AcpiUtCreateGenericState ();
|
|
if (!State)
|
|
{
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
/* Init fields specific to the control struct */
|
|
|
|
State->Common.DataType = ACPI_DESC_TYPE_STATE_CONTROL;
|
|
State->Common.State = ACPI_CONTROL_CONDITIONAL_EXECUTING;
|
|
|
|
return_PTR (State);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtDeleteGenericState
|
|
*
|
|
* PARAMETERS: State - The state object to be deleted
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Put a state object back into the global state cache. The object
|
|
* is not actually freed at this time.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtDeleteGenericState (
|
|
ACPI_GENERIC_STATE *State)
|
|
{
|
|
ACPI_FUNCTION_TRACE ("UtDeleteGenericState");
|
|
|
|
|
|
(void) AcpiOsReleaseObject (AcpiGbl_StateCache, State);
|
|
return_VOID;
|
|
}
|
|
|
|
|