Import of Intel ACPI 20030228 vendor distribution

4 files changed, 1690 insertions, 0 deletions

diff --git a/sys/contrib/dev/acpica/dsinit.c b/sys/contrib/dev/acpica/dsinit.c
new file mode 100644
index 0000000..543621b
--- /dev/null
+++ b/sys/contrib/dev/acpica/dsinit.c
@@ -0,0 +1,316 @@
+/******************************************************************************
+ *
+ * Module Name: dsinit - Object initialization namespace walk
+ *              $Revision: 6 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2003, 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 __DSINIT_C__
+
+#include "acpi.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_DISPATCHER
+        ACPI_MODULE_NAME    ("dsinit")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiDsInitOneObject
+ *
+ * PARAMETERS:  ObjHandle       - Node
+ *              Level           - Current nesting level
+ *              Context         - Points to a init info struct
+ *              ReturnValue     - Not used
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Callback from AcpiWalkNamespace.  Invoked for every object
+ *              within the namespace.
+ *
+ *              Currently, the only objects that require initialization are:
+ *              1) Methods
+ *              2) Operation Regions
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiDsInitOneObject (
+    ACPI_HANDLE             ObjHandle,
+    UINT32                  Level,
+    void                    *Context,
+    void                    **ReturnValue)
+{
+    ACPI_OBJECT_TYPE        Type;
+    ACPI_STATUS             Status;
+    ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;
+
+
+    ACPI_FUNCTION_NAME ("DsInitOneObject");
+
+
+    /*
+     * We are only interested in objects owned by the table that
+     * was just loaded
+     */
+    if (((ACPI_NAMESPACE_NODE *) ObjHandle)->OwnerId !=
+            Info->TableDesc->TableId)
+    {
+        return (AE_OK);
+    }
+
+    Info->ObjectCount++;
+
+    /* And even then, we are only interested in a few object types */
+
+    Type = AcpiNsGetType (ObjHandle);
+
+    switch (Type)
+    {
+    case ACPI_TYPE_REGION:
+
+        Status = AcpiDsInitializeRegion (ObjHandle);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region %p [%4.4s] - Init failure, %s\n",
+                ObjHandle, ((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii,
+                AcpiFormatException (Status)));
+        }
+
+        Info->OpRegionCount++;
+        break;
+
+
+    case ACPI_TYPE_METHOD:
+
+        Info->MethodCount++;
+
+        /* Print a dot for each method unless we are going to print the entire pathname */
+
+        if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
+        {
+            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
+        }
+
+        /*
+         * Set the execution data width (32 or 64) based upon the
+         * revision number of the parent ACPI table.
+         * TBD: This is really for possible future support of integer width
+         * on a per-table basis. Currently, we just use a global for the width.
+         */
+        if (Info->TableDesc->Pointer->Revision == 1)
+        {
+            ((ACPI_NAMESPACE_NODE *) ObjHandle)->Flags |= ANOBJ_DATA_WIDTH_32;
+        }
+
+        /*
+         * Always parse methods to detect errors, we may delete
+         * the parse tree below
+         */
+        Status = AcpiDsParseMethod (ObjHandle);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",
+                ObjHandle, ((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii,
+                AcpiFormatException (Status)));
+
+            /* This parse failed, but we will continue parsing more methods */
+
+            break;
+        }
+
+        /*
+         * Delete the parse tree.  We simple re-parse the method
+         * for every execution since there isn't much overhead
+         */
+        AcpiNsDeleteNamespaceSubtree (ObjHandle);
+        AcpiNsDeleteNamespaceByOwner (((ACPI_NAMESPACE_NODE *) ObjHandle)->Object->Method.OwningId);
+        break;
+
+
+    case ACPI_TYPE_DEVICE:
+
+        Info->DeviceCount++;
+        break;
+
+
+    default:
+        break;
+    }
+
+    /*
+     * We ignore errors from above, and always return OK, since
+     * we don't want to abort the walk on a single error.
+     */
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiDsInitializeObjects
+ *
+ * PARAMETERS:  TableDesc       - Descriptor for parent ACPI table
+ *              StartNode       - Root of subtree to be initialized.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
+ *              necessary initialization on the objects found therein
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiDsInitializeObjects (
+    ACPI_TABLE_DESC         *TableDesc,
+    ACPI_NAMESPACE_NODE     *StartNode)
+{
+    ACPI_STATUS             Status;
+    ACPI_INIT_WALK_INFO     Info;
+
+
+    ACPI_FUNCTION_TRACE ("DsInitializeObjects");
+
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+        "**** Starting initialization of namespace objects ****\n"));
+    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));
+
+    Info.MethodCount    = 0;
+    Info.OpRegionCount  = 0;
+    Info.ObjectCount    = 0;
+    Info.DeviceCount    = 0;
+    Info.TableDesc      = TableDesc;
+
+    /* Walk entire namespace from the supplied root */
+
+    Status = AcpiWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
+                    AcpiDsInitOneObject, &Info, NULL);
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed, %s\n",
+            AcpiFormatException (Status)));
+    }
+
+    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
+        "\nTable [%4.4s] - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
+        TableDesc->Pointer->Signature, Info.ObjectCount,
+        Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+        "%hd Methods, %hd Regions\n", Info.MethodCount, Info.OpRegionCount));
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+
diff --git a/sys/contrib/dev/acpica/evgpe.c b/sys/contrib/dev/acpica/evgpe.c
new file mode 100644
index 0000000..d19058c
--- /dev/null
+++ b/sys/contrib/dev/acpica/evgpe.c
@@ -0,0 +1,479 @@
+/******************************************************************************
+ *
+ * Module Name: evgpe - General Purpose Event handling and dispatch
+ *              $Revision: 12 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2003, 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 "acpi.h"
+#include "acevents.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_EVENTS
+        ACPI_MODULE_NAME    ("evgpe")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvGetGpeEventInfo
+ *
+ * PARAMETERS:  GpeNumber       - Raw GPE number
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Returns the EventInfo struct
+ *              associated with this GPE.
+ *
+ * TBD: this function will go away when full support of GPE block devices
+ *      is implemented!
+ *
+ ******************************************************************************/
+
+ACPI_GPE_EVENT_INFO *
+AcpiEvGetGpeEventInfo (
+    UINT32                  GpeNumber)
+{
+    ACPI_GPE_BLOCK_INFO     *GpeBlock;
+
+
+    /* Examine GPE Block 0 */
+
+    GpeBlock = AcpiGbl_GpeBlockListHead;
+    if (!GpeBlock)
+    {
+        return (NULL);
+    }
+
+    if ((GpeNumber >= GpeBlock->BlockBaseNumber) &&
+        (GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8)))
+    {
+        return (&GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber]);
+    }
+
+    /* Examine GPE Block 1 */
+
+    GpeBlock = GpeBlock->Next;
+    if (!GpeBlock)
+    {
+        return (NULL);
+    }
+
+    if ((GpeNumber >= GpeBlock->BlockBaseNumber) &&
+        (GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8)))
+    {
+        return (&GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber]);
+    }
+
+    return (NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvGpeDetect
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
+ *
+ * DESCRIPTION: Detect if any GP events have occurred.  This function is
+ *              executed at interrupt level.
+ *
+ ******************************************************************************/
+
+UINT32
+AcpiEvGpeDetect (void)
+{
+    UINT32                  IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
+    UINT32                  i;
+    UINT32                  j;
+    UINT8                   EnabledStatusByte;
+    UINT8                   BitMask;
+    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
+    UINT32                  InValue;
+    ACPI_STATUS             Status;
+    ACPI_GPE_BLOCK_INFO     *GpeBlock;
+
+
+    ACPI_FUNCTION_NAME ("EvGpeDetect");
+
+
+    /* Examine all GPE blocks attached to this interrupt level */
+
+    GpeBlock = AcpiGbl_GpeBlockListHead;
+    while (GpeBlock)
+    {
+        /*
+         * Read all of the 8-bit GPE status and enable registers
+         * in this GPE block, saving all of them.
+         * Find all currently active GP events.
+         */
+        for (i = 0; i < GpeBlock->RegisterCount; i++)
+        {
+            /* Get the next status/enable pair */
+
+            GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
+
+            Status = AcpiHwLowLevelRead (ACPI_GPE_REGISTER_WIDTH, &InValue,
+                        &GpeRegisterInfo->StatusAddress, 0);
+            GpeRegisterInfo->Status = (UINT8) InValue;
+            if (ACPI_FAILURE (Status))
+            {
+                return (ACPI_INTERRUPT_NOT_HANDLED);
+            }
+
+            Status = AcpiHwLowLevelRead (ACPI_GPE_REGISTER_WIDTH, &InValue,
+                        &GpeRegisterInfo->EnableAddress, 0);
+            GpeRegisterInfo->Enable = (UINT8) InValue;
+            if (ACPI_FAILURE (Status))
+            {
+                return (ACPI_INTERRUPT_NOT_HANDLED);
+            }
+
+            ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
+                "GPE block at %8.8X%8.8X - Values: Enable %02X Status %02X\n",
+                ACPI_HIDWORD (ACPI_GET_ADDRESS (GpeRegisterInfo->EnableAddress.Address)),
+                ACPI_LODWORD (ACPI_GET_ADDRESS (GpeRegisterInfo->EnableAddress.Address)),
+                GpeRegisterInfo->Enable,
+                GpeRegisterInfo->Status));
+
+            /* First check if there is anything active at all in this register */
+
+            EnabledStatusByte = (UINT8) (GpeRegisterInfo->Status &
+                                         GpeRegisterInfo->Enable);
+            if (!EnabledStatusByte)
+            {
+                /* No active GPEs in this register, move on */
+
+                continue;
+            }
+
+            /* Now look at the individual GPEs in this byte register */
+
+            for (j = 0, BitMask = 1; j < ACPI_GPE_REGISTER_WIDTH; j++, BitMask <<= 1)
+            {
+                /* Examine one GPE bit */
+
+                if (EnabledStatusByte & BitMask)
+                {
+                    /*
+                     * Found an active GPE. Dispatch the event to a handler
+                     * or method.
+                     */
+                    IntStatus |= AcpiEvGpeDispatch (
+                                    &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) +j]);
+                }
+            }
+        }
+
+        GpeBlock = GpeBlock->Next;
+    }
+
+    return (IntStatus);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvAsynchExecuteGpeMethod
+ *
+ * PARAMETERS:  GpeEventInfo - Info for this GPE
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Perform the actual execution of a GPE control method.  This
+ *              function is called from an invocation of AcpiOsQueueForExecution
+ *              (and therefore does NOT execute at interrupt level) so that
+ *              the control method itself is not executed in the context of
+ *              the SCI interrupt handler.
+ *
+ ******************************************************************************/
+
+static void ACPI_SYSTEM_XFACE
+AcpiEvAsynchExecuteGpeMethod (
+    void                    *Context)
+{
+    ACPI_GPE_EVENT_INFO     *GpeEventInfo = (void *) Context;
+    UINT32                  GpeNumber = 0;
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE ("EvAsynchExecuteGpeMethod");
+
+
+    /*
+     * Take a snapshot of the GPE info for this level - we copy the
+     * info to prevent a race condition with RemoveHandler.
+     */
+    Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
+    if (ACPI_FAILURE (Status))
+    {
+        return_VOID;
+    }
+
+    Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
+    if (ACPI_FAILURE (Status))
+    {
+        return_VOID;
+    }
+
+    if (GpeEventInfo->MethodNode)
+    {
+        /*
+         * Invoke the GPE Method (_Lxx, _Exx):
+         * (Evaluate the _Lxx/_Exx control method that corresponds to this GPE.)
+         */
+        Status = AcpiNsEvaluateByHandle (GpeEventInfo->MethodNode, NULL, NULL);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_REPORT_ERROR (("%s while evaluating method [%4.4s] for GPE[%2.2X]\n",
+                AcpiFormatException (Status),
+                GpeEventInfo->MethodNode->Name.Ascii, GpeNumber));
+        }
+    }
+
+    if (GpeEventInfo->Type & ACPI_EVENT_LEVEL_TRIGGERED)
+    {
+        /*
+         * GPE is level-triggered, we clear the GPE status bit after handling
+         * the event.
+         */
+        Status = AcpiHwClearGpe (GpeEventInfo);
+        if (ACPI_FAILURE (Status))
+        {
+            return_VOID;
+        }
+    }
+
+    /* Enable this GPE */
+
+    (void) AcpiHwEnableGpe (GpeEventInfo);
+    return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvGpeDispatch
+ *
+ * PARAMETERS:  GpeEventInfo   - info for this GPE
+ *
+ * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
+ *
+ * DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC)
+ *              or method (e.g. _Lxx/_Exx) handler.  This function executes
+ *              at interrupt level.
+ *
+ ******************************************************************************/
+
+UINT32
+AcpiEvGpeDispatch (
+    ACPI_GPE_EVENT_INFO     *GpeEventInfo)
+{
+    UINT32                  GpeNumber = 0; /* TBD: remove */
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE ("EvGpeDispatch");
+
+
+    /*
+     * If edge-triggered, clear the GPE status bit now.  Note that
+     * level-triggered events are cleared after the GPE is serviced.
+     */
+    if (GpeEventInfo->Type & ACPI_EVENT_EDGE_TRIGGERED)
+    {
+        Status = AcpiHwClearGpe (GpeEventInfo);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to clear GPE[%2.2X]\n",
+                GpeNumber));
+            return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
+        }
+    }
+
+    /*
+     * Dispatch the GPE to either an installed handler, or the control
+     * method associated with this GPE (_Lxx or _Exx).
+     * If a handler exists, we invoke it and do not attempt to run the method.
+     * If there is neither a handler nor a method, we disable the level to
+     * prevent further events from coming in here.
+     */
+    if (GpeEventInfo->Handler)
+    {
+        /* Invoke the installed handler (at interrupt level) */
+
+        GpeEventInfo->Handler (GpeEventInfo->Context);
+    }
+    else if (GpeEventInfo->MethodNode)
+    {
+        /*
+         * Disable GPE, so it doesn't keep firing before the method has a
+         * chance to run.
+         */
+        Status = AcpiHwDisableGpe (GpeEventInfo);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to disable GPE[%2.2X]\n",
+                GpeNumber));
+            return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
+        }
+
+        /*
+         * Execute the method associated with the GPE.
+         */
+        if (ACPI_FAILURE (AcpiOsQueueForExecution (OSD_PRIORITY_GPE,
+                                AcpiEvAsynchExecuteGpeMethod,
+                                GpeEventInfo)))
+        {
+            ACPI_REPORT_ERROR ((
+                "AcpiEvGpeDispatch: Unable to queue handler for GPE[%2.2X], event is disabled\n",
+                GpeNumber));
+        }
+    }
+    else
+    {
+        /* No handler or method to run! */
+
+        ACPI_REPORT_ERROR ((
+            "AcpiEvGpeDispatch: No handler or method for GPE[%2.2X], disabling event\n",
+            GpeNumber));
+
+        /*
+         * Disable the GPE.  The GPE will remain disabled until the ACPI
+         * Core Subsystem is restarted, or the handler is reinstalled.
+         */
+        Status = AcpiHwDisableGpe (GpeEventInfo);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to disable GPE[%2.2X]\n",
+                GpeNumber));
+            return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
+        }
+    }
+
+    /*
+     * It is now safe to clear level-triggered evnets.
+     */
+    if (GpeEventInfo->Type & ACPI_EVENT_LEVEL_TRIGGERED)
+    {
+        Status = AcpiHwClearGpe (GpeEventInfo);
+        if (ACPI_FAILURE (Status))
+        {
+            ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to clear GPE[%2.2X]\n",
+                GpeNumber));
+            return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
+        }
+    }
+
+    return_VALUE (ACPI_INTERRUPT_HANDLED);
+}
+
diff --git a/sys/contrib/dev/acpica/evgpeblk.c b/sys/contrib/dev/acpica/evgpeblk.c
new file mode 100644
index 0000000..89aa409
--- /dev/null
+++ b/sys/contrib/dev/acpica/evgpeblk.c
@@ -0,0 +1,645 @@
+/******************************************************************************
+ *
+ * Module Name: evgpeblk - GPE block creation and initialization.
+ *              $Revision: 4 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2003, 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 "acpi.h"
+#include "acevents.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_EVENTS
+        ACPI_MODULE_NAME    ("evgpe")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvSaveMethodInfo
+ *
+ * PARAMETERS:  Callback from WalkNamespace
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Called from AcpiWalkNamespace.  Expects each object to be a
+ *              control method under the _GPE portion of the namespace.
+ *              Extract the name and GPE type from the object, saving this
+ *              information for quick lookup during GPE dispatch
+ *
+ *              The name of each GPE control method is of the form:
+ *                  "_Lnn" or "_Enn"
+ *              Where:
+ *                  L      - means that the GPE is level triggered
+ *                  E      - means that the GPE is edge triggered
+ *                  nn     - is the GPE number [in HEX]
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+AcpiEvSaveMethodInfo (
+    ACPI_HANDLE             ObjHandle,
+    UINT32                  Level,
+    void                    *ObjDesc,
+    void                    **ReturnValue)
+{
+    ACPI_GPE_BLOCK_INFO     *GpeBlock = (void *) ObjDesc;
+    ACPI_GPE_EVENT_INFO     *GpeEventInfo;
+    UINT32                  GpeNumber;
+    char                    Name[ACPI_NAME_SIZE + 1];
+    UINT8                   Type;
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_NAME ("EvSaveMethodInfo");
+
+
+    /* Extract the name from the object and convert to a string */
+
+    ACPI_MOVE_UNALIGNED32_TO_32 (Name,
+                &((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Integer);
+    Name[ACPI_NAME_SIZE] = 0;
+
+    /*
+     * Edge/Level determination is based on the 2nd character of the method name
+     */
+    switch (Name[1])
+    {
+    case 'L':
+        Type = ACPI_EVENT_LEVEL_TRIGGERED;
+        break;
+
+    case 'E':
+        Type = ACPI_EVENT_EDGE_TRIGGERED;
+        break;
+
+    default:
+        /* Unknown method type, just ignore it! */
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+            "Unknown GPE method type: %s (name not of form _Lnn or _Enn)\n",
+            Name));
+        return (AE_OK);
+    }
+
+    /* Convert the last two characters of the name to the GPE Number */
+
+    GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
+    if (GpeNumber == ACPI_UINT32_MAX)
+    {
+        /* Conversion failed; invalid method, just ignore it */
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+            "Could not extract GPE number from name: %s (name is not of form _Lnn or _Enn)\n",
+            Name));
+        return (AE_OK);
+    }
+
+    /* Ensure that we have a valid GPE number for this GPE block */
+
+    if ((GpeNumber < GpeBlock->BlockBaseNumber) ||
+        (GpeNumber - GpeBlock->BlockBaseNumber >= (GpeBlock->RegisterCount * 8)))
+    {
+        /* Not valid, all we can do here is ignore it */
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+            "GPE number associated with method %s is not valid\n", Name));
+        return (AE_OK);
+    }
+
+    /*
+     * Now we can add this information to the GpeEventInfo block
+     * for use during dispatch of this GPE.
+     */
+    GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber];
+
+    GpeEventInfo->Type       = Type;
+    GpeEventInfo->MethodNode = (ACPI_NAMESPACE_NODE *) ObjHandle;
+
+    /*
+     * Enable the GPE (SCIs should be disabled at this point)
+     */
+    Status = AcpiHwEnableGpe (GpeEventInfo);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Registered GPE method %s as GPE number %2.2X\n",
+        Name, GpeNumber));
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvInstallGpeBlock
+ *
+ * PARAMETERS:  GpeBlock    - New GPE block
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install new GPE block with mutex support
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvInstallGpeBlock (
+    ACPI_GPE_BLOCK_INFO     *GpeBlock)
+{
+    ACPI_GPE_BLOCK_INFO     *NextGpeBlock;
+    ACPI_STATUS             Status;
+
+
+    Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    /* Install the new block at the end of the global list */
+
+    if (AcpiGbl_GpeBlockListHead)
+    {
+        NextGpeBlock = AcpiGbl_GpeBlockListHead;
+        while (NextGpeBlock->Next)
+        {
+            NextGpeBlock = NextGpeBlock->Next;
+        }
+
+        NextGpeBlock->Next = GpeBlock;
+        GpeBlock->Previous = NextGpeBlock;
+    }
+    else
+    {
+        AcpiGbl_GpeBlockListHead = GpeBlock;
+    }
+
+    Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
+    return (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvCreateGpeInfoBlocks
+ *
+ * PARAMETERS:  GpeBlock    - New GPE block
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvCreateGpeInfoBlocks (
+    ACPI_GPE_BLOCK_INFO     *GpeBlock)
+{
+    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo = NULL;
+    ACPI_GPE_EVENT_INFO     *GpeEventInfo = NULL;
+    ACPI_GPE_EVENT_INFO     *ThisEvent;
+    ACPI_GPE_REGISTER_INFO  *ThisRegister;
+    ACPI_NATIVE_UINT        i;
+    ACPI_NATIVE_UINT        j;
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE ("EvCreateGpeInfoBlocks");
+
+
+    /* Allocate the GPE register information block */
+
+    GpeRegisterInfo = ACPI_MEM_CALLOCATE (
+                                (ACPI_SIZE) GpeBlock->RegisterCount *
+                                sizeof (ACPI_GPE_REGISTER_INFO));
+    if (!GpeRegisterInfo)
+    {
+        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+            "Could not allocate the GpeRegisterInfo table\n"));
+        return_ACPI_STATUS (AE_NO_MEMORY);
+    }
+
+    /*
+     * Allocate the GPE EventInfo block.  There are eight distinct GPEs
+     * per register.  Initialization to zeros is sufficient.
+     */
+    GpeEventInfo = ACPI_MEM_CALLOCATE (
+                        ((ACPI_SIZE) GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) *
+                        sizeof (ACPI_GPE_EVENT_INFO));
+    if (!GpeEventInfo)
+    {
+        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not allocate the GpeEventInfo table\n"));
+        Status = AE_NO_MEMORY;
+        goto ErrorExit;
+    }
+
+    /*
+     * Initialize the GPE Register and Event structures.  A goal of these
+     * tables is to hide the fact that there are two separate GPE register sets
+     * in a given gpe hardware block, the status registers occupy the first half,
+     * and the enable registers occupy the second half.  Another goal is to hide
+     * the fact that there may be multiple GPE hardware blocks.
+     */
+    ThisRegister = GpeRegisterInfo;
+    ThisEvent    = GpeEventInfo;
+
+    for (i = 0; i < GpeBlock->RegisterCount; i++)
+    {
+        /* Init the RegisterInfo for this GPE register (8 GPEs) */
+
+        ThisRegister->BaseGpeNumber = (UINT8) (GpeBlock->BlockBaseNumber +
+                                                 (i * ACPI_GPE_REGISTER_WIDTH));
+
+        ACPI_STORE_ADDRESS (ThisRegister->StatusAddress.Address,
+                                (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)
+                                + i));
+
+        ACPI_STORE_ADDRESS (ThisRegister->EnableAddress.Address,
+                                (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)
+                                + i
+                                + GpeBlock->RegisterCount));
+
+        ThisRegister->StatusAddress.AddressSpaceId    = GpeBlock->BlockAddress.AddressSpaceId;
+        ThisRegister->EnableAddress.AddressSpaceId    = GpeBlock->BlockAddress.AddressSpaceId;
+        ThisRegister->StatusAddress.RegisterBitWidth  = ACPI_GPE_REGISTER_WIDTH;
+        ThisRegister->EnableAddress.RegisterBitWidth  = ACPI_GPE_REGISTER_WIDTH;
+        ThisRegister->StatusAddress.RegisterBitOffset = ACPI_GPE_REGISTER_WIDTH;
+        ThisRegister->EnableAddress.RegisterBitOffset = ACPI_GPE_REGISTER_WIDTH;
+
+        /* Init the EventInfo for each GPE within this register */
+
+        for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
+        {
+            ThisEvent->BitMask = AcpiGbl_DecodeTo8bit[j];
+            ThisEvent->RegisterInfo = ThisRegister;
+            ThisEvent++;
+        }
+
+        /*
+         * Clear the status/enable registers.  Note that status registers
+         * are cleared by writing a '1', while enable registers are cleared
+         * by writing a '0'.
+         */
+        Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0x00,
+                    &ThisRegister->EnableAddress, 0);
+        if (ACPI_FAILURE (Status))
+        {
+            goto ErrorExit;
+        }
+
+        Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0xFF,
+                    &ThisRegister->StatusAddress, 0);
+        if (ACPI_FAILURE (Status))
+        {
+            goto ErrorExit;
+        }
+
+        ThisRegister++;
+    }
+
+    GpeBlock->RegisterInfo = GpeRegisterInfo;
+    GpeBlock->EventInfo    = GpeEventInfo;
+
+    return_ACPI_STATUS (AE_OK);
+
+
+ErrorExit:
+
+    if (GpeRegisterInfo)
+    {
+        ACPI_MEM_FREE (GpeRegisterInfo);
+    }
+    if (GpeEventInfo)
+    {
+        ACPI_MEM_FREE (GpeEventInfo);
+    }
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvCreateGpeBlock
+ *
+ * PARAMETERS:  TBD
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create and Install a block of GPE registers
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvCreateGpeBlock (
+    char                    *Pathname,
+    ACPI_GENERIC_ADDRESS    *GpeBlockAddress,
+    UINT32                  RegisterCount,
+    UINT8                   GpeBlockBaseNumber,
+    UINT32                  InterruptLevel)
+{
+    ACPI_GPE_BLOCK_INFO     *GpeBlock;
+    ACPI_STATUS             Status;
+    ACPI_HANDLE             ObjHandle;
+
+
+    ACPI_FUNCTION_TRACE ("EvCreateGpeBlock");
+
+
+    if (!RegisterCount)
+    {
+        return_ACPI_STATUS (AE_OK);
+    }
+
+    /* Get a handle to the parent object for this GPE block */
+
+    Status = AcpiGetHandle (NULL, Pathname, &ObjHandle);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Allocate a new GPE block */
+
+    GpeBlock = ACPI_MEM_CALLOCATE (sizeof (ACPI_GPE_BLOCK_INFO));
+    if (!GpeBlock)
+    {
+        return_ACPI_STATUS (AE_NO_MEMORY);
+    }
+
+    /* Initialize the new GPE block */
+
+    GpeBlock->RegisterCount   = RegisterCount;
+    GpeBlock->BlockBaseNumber = GpeBlockBaseNumber;
+
+    ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress, sizeof (ACPI_GENERIC_ADDRESS));
+
+    /* Create the RegisterInfo and EventInfo sub-structures */
+
+    Status = AcpiEvCreateGpeInfoBlocks (GpeBlock);
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_MEM_FREE (GpeBlock);
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Install the new block in the global list(s) */
+    /* TBD: Install block in the interrupt handler list */
+
+    Status = AcpiEvInstallGpeBlock (GpeBlock);
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_MEM_FREE (GpeBlock);
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Dump info about this GPE block */
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "GPE Block: %X registers at %8.8X%8.8X\n",
+        GpeBlock->RegisterCount,
+        ACPI_HIDWORD (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)),
+        ACPI_LODWORD (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address))));
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "GPE Block defined as GPE%d to GPE%d\n",
+        GpeBlock->BlockBaseNumber,
+        (UINT32) (GpeBlock->BlockBaseNumber +
+                ((GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) -1))));
+
+    /* Find all GPE methods (_Lxx, _Exx) for this block */
+
+    Status = AcpiWalkNamespace (ACPI_TYPE_METHOD, ObjHandle,
+                                ACPI_UINT32_MAX, AcpiEvSaveMethodInfo,
+                                GpeBlock, NULL);
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvGpeInitialize
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize the GPE data structures
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvGpeInitialize (void)
+{
+    UINT32                  RegisterCount0 = 0;
+    UINT32                  RegisterCount1 = 0;
+    UINT32                  GpeNumberMax = 0;
+
+
+    ACPI_FUNCTION_TRACE ("EvGpeInitialize");
+
+
+    /*
+     * Initialize the GPE Blocks defined in the FADT
+     *
+     * Why the GPE register block lengths are divided by 2:  From the ACPI Spec,
+     * section "General-Purpose Event Registers", we have:
+     *
+     * "Each register block contains two registers of equal length
+     *  GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
+     *  GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
+     *  The length of the GPE1_STS and GPE1_EN registers is equal to
+     *  half the GPE1_LEN. If a generic register block is not supported
+     *  then its respective block pointer and block length values in the
+     *  FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
+     *  to be the same size."
+     */
+
+    /*
+     * Determine the maximum GPE number for this machine.
+     *
+     * Note: both GPE0 and GPE1 are optional, and either can exist without
+     * the other.
+     * If EITHER the register length OR the block address are zero, then that
+     * particular block is not supported.
+     */
+    if (AcpiGbl_FADT->Gpe0BlkLen &&
+        ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe0Blk.Address))
+    {
+        /* GPE block 0 exists (has both length and address > 0) */
+
+        RegisterCount0 = (UINT16) (AcpiGbl_FADT->Gpe0BlkLen / 2);
+
+        GpeNumberMax = (RegisterCount0 * ACPI_GPE_REGISTER_WIDTH) - 1;
+
+        AcpiEvCreateGpeBlock ("\\_GPE", &AcpiGbl_FADT->XGpe0Blk,
+            RegisterCount0, 0, AcpiGbl_FADT->SciInt);
+    }
+
+    if (AcpiGbl_FADT->Gpe1BlkLen &&
+        ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe1Blk.Address))
+    {
+        /* GPE block 1 exists (has both length and address > 0) */
+
+        RegisterCount1 = (UINT16) (AcpiGbl_FADT->Gpe1BlkLen / 2);
+
+        /* Check for GPE0/GPE1 overlap (if both banks exist) */
+
+        if ((RegisterCount0) &&
+            (GpeNumberMax >= AcpiGbl_FADT->Gpe1Base))
+        {
+            ACPI_REPORT_ERROR ((
+                "GPE0 block (GPE 0 to %d) overlaps the GPE1 block (GPE %d to %d) - Ignoring GPE1\n",
+                GpeNumberMax, AcpiGbl_FADT->Gpe1Base,
+                AcpiGbl_FADT->Gpe1Base +
+                ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1)));
+
+            /* Ignore GPE1 block by setting the register count to zero */
+
+            RegisterCount1 = 0;
+        }
+        else
+        {
+            AcpiEvCreateGpeBlock ("\\_GPE", &AcpiGbl_FADT->XGpe1Blk,
+                RegisterCount1, AcpiGbl_FADT->Gpe1Base, AcpiGbl_FADT->SciInt);
+
+            /*
+             * GPE0 and GPE1 do not have to be contiguous in the GPE number space,
+             * But, GPE0 always starts at zero.
+             */
+            GpeNumberMax = AcpiGbl_FADT->Gpe1Base +
+                                ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1);
+        }
+    }
+
+    /* Exit if there are no GPE registers */
+
+    if ((RegisterCount0 + RegisterCount1) == 0)
+    {
+        /* GPEs are not required by ACPI, this is OK */
+
+        ACPI_REPORT_INFO (("There are no GPE blocks defined in the FADT\n"));
+        return_ACPI_STATUS (AE_OK);
+    }
+
+    /* Check for Max GPE number out-of-range */
+
+    if (GpeNumberMax > ACPI_GPE_MAX)
+    {
+        ACPI_REPORT_ERROR (("Maximum GPE number from FADT is too large: 0x%X\n",
+            GpeNumberMax));
+        return_ACPI_STATUS (AE_BAD_VALUE);
+    }
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+
diff --git a/sys/contrib/dev/acpica/nsparse.c b/sys/contrib/dev/acpica/nsparse.c
new file mode 100644
index 0000000..3314efe
--- /dev/null
+++ b/sys/contrib/dev/acpica/nsparse.c
@@ -0,0 +1,250 @@
+/******************************************************************************
+ *
+ * Module Name: nsparse - namespace interface to AML parser
+ *              $Revision: 3 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2003, 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 __NSPARSE_C__
+
+#include "acpi.h"
+#include "acnamesp.h"
+#include "acparser.h"
+#include "acdispat.h"
+
+
+#define _COMPONENT          ACPI_NAMESPACE
+        ACPI_MODULE_NAME    ("nsparse")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    NsOneCompleteParse
+ *
+ * PARAMETERS:  PassNumber              - 1 or 2
+ *              TableDesc               - The table to be parsed.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiNsOneCompleteParse (
+    UINT32                  PassNumber,
+    ACPI_TABLE_DESC         *TableDesc)
+{
+    ACPI_PARSE_OBJECT       *ParseRoot;
+    ACPI_STATUS             Status;
+    ACPI_WALK_STATE         *WalkState;
+
+
+    ACPI_FUNCTION_TRACE ("NsOneCompleteParse");
+
+
+    /* Create and init a Root Node */
+
+    ParseRoot = AcpiPsCreateScopeOp ();
+    if (!ParseRoot)
+    {
+        return_ACPI_STATUS (AE_NO_MEMORY);
+    }
+
+
+    /* Create and initialize a new walk state */
+
+    WalkState = AcpiDsCreateWalkState (TABLE_ID_DSDT,
+                                    NULL, NULL, NULL);
+    if (!WalkState)
+    {
+        AcpiPsFreeOp (ParseRoot);
+        return_ACPI_STATUS (AE_NO_MEMORY);
+    }
+
+    Status = AcpiDsInitAmlWalk (WalkState, ParseRoot, NULL, TableDesc->AmlStart,
+                    TableDesc->AmlLength, NULL, NULL, PassNumber);
+    if (ACPI_FAILURE (Status))
+    {
+        AcpiDsDeleteWalkState (WalkState);
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Parse the AML */
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %d parse\n", PassNumber));
+    Status = AcpiPsParseAml (WalkState);
+
+    AcpiPsDeleteParseTree (ParseRoot);
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiNsParseTable
+ *
+ * PARAMETERS:  TableDesc       - An ACPI table descriptor for table to parse
+ *              StartNode       - Where to enter the table into the namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiNsParseTable (
+    ACPI_TABLE_DESC         *TableDesc,
+    ACPI_NAMESPACE_NODE     *StartNode)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE ("NsParseTable");
+
+
+    /*
+     * AML Parse, pass 1
+     *
+     * In this pass, we load most of the namespace.  Control methods
+     * are not parsed until later.  A parse tree is not created.  Instead,
+     * each Parser Op subtree is deleted when it is finished.  This saves
+     * a great deal of memory, and allows a small cache of parse objects
+     * to service the entire parse.  The second pass of the parse then
+     * performs another complete parse of the AML..
+     */
+    Status = AcpiNsOneCompleteParse (1, TableDesc);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /*
+     * AML Parse, pass 2
+     *
+     * In this pass, we resolve forward references and other things
+     * that could not be completed during the first pass.
+     * Another complete parse of the AML is performed, but the
+     * overhead of this is compensated for by the fact that the
+     * parse objects are all cached.
+     */
+    Status = AcpiNsOneCompleteParse (2, TableDesc);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    return_ACPI_STATUS (Status);
+}
+
+