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diff --git a/sys/contrib/dev/acpica/acstruct.h b/sys/contrib/dev/acpica/acstruct.h
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+/******************************************************************************
+ *
+ * Name: acstruct.h - Internal structs
+ *       $Revision: 3 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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.
+ *
+ *****************************************************************************/
+
+#ifndef __ACSTRUCT_H__
+#define __ACSTRUCT_H__
+
+
+/*****************************************************************************
+ *
+ * Tree walking typedefs and structs
+ *
+ ****************************************************************************/
+
+
+/*
+ * Walk state - current state of a parse tree walk.  Used for both a leisurely stroll through
+ * the tree (for whatever reason), and for control method execution.
+ */
+
+#define NEXT_OP_DOWNWARD    1
+#define NEXT_OP_UPWARD      2
+
+#define WALK_NON_METHOD     0
+#define WALK_METHOD         1
+#define WALK_METHOD_RESTART 2
+
+typedef struct acpi_walk_state
+{
+    UINT8                   DataType;                           /* To differentiate various internal objs */\
+    ACPI_OWNER_ID           OwnerId;                            /* Owner of objects created during the walk */
+    BOOLEAN                 LastPredicate;                      /* Result of last predicate */
+    UINT8                   NextOpInfo;                         /* Info about NextOp */
+    UINT8                   NumOperands;                        /* Stack pointer for Operands[] array */
+    UINT8                   CurrentResult;                      /* */
+
+    struct acpi_walk_state  *Next;                              /* Next WalkState in list */
+    ACPI_PARSE_OBJECT       *Origin;                            /* Start of walk [Obsolete] */
+
+/* TBD: Obsolete with removal of WALK procedure ? */
+    ACPI_PARSE_OBJECT       *PrevOp;                            /* Last op that was processed */
+    ACPI_PARSE_OBJECT       *NextOp;                            /* next op to be processed */
+
+
+    ACPI_GENERIC_STATE      *Results;                           /* Stack of accumulated results */
+    ACPI_GENERIC_STATE      *ControlState;                      /* List of control states (nested IFs) */
+    ACPI_GENERIC_STATE      *ScopeInfo;                         /* Stack of nested scopes */
+    ACPI_PARSE_STATE        *ParserState;                       /* Current state of parser */
+    UINT8                   *AmlLastWhile;
+    ACPI_OPCODE_INFO        *OpInfo;                            /* Info on current opcode */
+    ACPI_PARSE_DOWNWARDS    DescendingCallback;
+    ACPI_PARSE_UPWARDS      AscendingCallback;
+
+    union acpi_operand_obj  *ReturnDesc;                        /* Return object, if any */
+    union acpi_operand_obj  *MethodDesc;                        /* Method descriptor if running a method */
+    struct acpi_node        *MethodNode;                        /* Method Node if running a method */
+    ACPI_PARSE_OBJECT       *MethodCallOp;                      /* MethodCall Op if running a method */
+    struct acpi_node        *MethodCallNode;                    /* Called method Node*/
+    union acpi_operand_obj  *Operands[OBJ_NUM_OPERANDS];        /* Operands passed to the interpreter */
+    struct acpi_node        Arguments[MTH_NUM_ARGS];            /* Control method arguments */
+    struct acpi_node        LocalVariables[MTH_NUM_LOCALS];     /* Control method locals */
+    struct acpi_walk_list   *WalkList;
+    UINT32                  ParseFlags;
+    UINT8                   WalkType;
+    UINT8                   ReturnUsed;
+    UINT16                  Opcode;                             /* Current AML opcode */
+    UINT32                  PrevArgTypes;
+    UINT16                  CurrentSyncLevel;                   /* Mutex Sync (nested acquire) level */
+
+    /* Debug support */
+
+    UINT32                  MethodBreakpoint;
+
+
+} ACPI_WALK_STATE;
+
+
+/*
+ * Walk list - head of a tree of walk states.  Multiple walk states are created when there
+ * are nested control methods executing.
+ */
+typedef struct acpi_walk_list
+{
+
+    ACPI_WALK_STATE         *WalkState;
+    ACPI_OBJECT_MUTEX       AcquiredMutexList;                 /* List of all currently acquired mutexes */
+
+} ACPI_WALK_LIST;
+
+
+/* Info used by AcpiPsInitObjects */
+
+typedef struct acpi_init_walk_info
+{
+    UINT16                  MethodCount;
+    UINT16                  OpRegionCount;
+    UINT16                  FieldCount;
+    UINT16                  OpRegionInit;
+    UINT16                  FieldInit;
+    UINT16                  ObjectCount;
+    ACPI_TABLE_DESC         *TableDesc;
+
+} ACPI_INIT_WALK_INFO;
+
+
+/* Info used by TBD */
+
+typedef struct acpi_device_walk_info
+{
+    UINT16                  DeviceCount;
+    UINT16                  Num_STA;
+    UINT16                  Num_INI;
+    ACPI_TABLE_DESC         *TableDesc;
+
+} ACPI_DEVICE_WALK_INFO;
+
+
+/* TBD: [Restructure] Merge with struct above */
+
+typedef struct acpi_walk_info
+{
+    UINT32                  DebugLevel;
+    UINT32                  OwnerId;
+
+} ACPI_WALK_INFO;
+
+typedef struct acpi_get_devices_info
+{
+    ACPI_WALK_CALLBACK      UserFunction;
+    void                    *Context;
+    NATIVE_CHAR             *Hid;
+
+} ACPI_GET_DEVICES_INFO;
+
+
+#endif