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diff --git a/sys/contrib/dev/acpica/evevent.c b/sys/contrib/dev/acpica/evevent.c
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+/******************************************************************************
+ *
+ * Module Name: evevent - Fixed Event handling and dispatch
+ *              $Revision: 1.125 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2007, 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 <contrib/dev/acpica/acpi.h>
+#include <contrib/dev/acpica/acevents.h>
+
+#define _COMPONENT          ACPI_EVENTS
+        ACPI_MODULE_NAME    ("evevent")
+
+/* Local prototypes */
+
+static ACPI_STATUS
+AcpiEvFixedEventInitialize (
+    void);
+
+static UINT32
+AcpiEvFixedEventDispatch (
+    UINT32                  Event);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvInitializeEvents
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize global data structures for ACPI events (Fixed, GPE)
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvInitializeEvents (
+    void)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (EvInitializeEvents);
+
+
+    /*
+     * Initialize the Fixed and General Purpose Events. This is done prior to
+     * enabling SCIs to prevent interrupts from occurring before the handlers are
+     * installed.
+     */
+    Status = AcpiEvFixedEventInitialize ();
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_EXCEPTION ((AE_INFO, Status,
+            "Unable to initialize fixed events"));
+        return_ACPI_STATUS (Status);
+    }
+
+    Status = AcpiEvGpeInitialize ();
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_EXCEPTION ((AE_INFO, Status,
+            "Unable to initialize general purpose events"));
+        return_ACPI_STATUS (Status);
+    }
+
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvInstallFadtGpes
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Completes initialization of the FADT-defined GPE blocks
+ *              (0 and 1). This causes the _PRW methods to be run, so the HW
+ *              must be fully initialized at this point, including global lock
+ *              support.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvInstallFadtGpes (
+    void)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (EvInstallFadtGpes);
+
+
+    /* Namespace must be locked */
+
+    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    /* FADT GPE Block 0 */
+
+    (void) AcpiEvInitializeGpeBlock (
+                AcpiGbl_FadtGpeDevice, AcpiGbl_GpeFadtBlocks[0]);
+
+    /* FADT GPE Block 1 */
+
+    (void) AcpiEvInitializeGpeBlock (
+                AcpiGbl_FadtGpeDevice, AcpiGbl_GpeFadtBlocks[1]);
+
+    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
+    return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvInstallXruptHandlers
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install interrupt handlers for the SCI and Global Lock
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvInstallXruptHandlers (
+    void)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (EvInstallXruptHandlers);
+
+
+    /* Install the SCI handler */
+
+    Status = AcpiEvInstallSciHandler ();
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_EXCEPTION ((AE_INFO, Status,
+            "Unable to install System Control Interrupt handler"));
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Install the handler for the Global Lock */
+
+    Status = AcpiEvInitGlobalLockHandler ();
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_EXCEPTION ((AE_INFO, Status,
+            "Unable to initialize Global Lock handler"));
+        return_ACPI_STATUS (Status);
+    }
+
+    AcpiGbl_EventsInitialized = TRUE;
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvFixedEventInitialize
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install the fixed event handlers and enable the fixed events.
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+AcpiEvFixedEventInitialize (
+    void)
+{
+    ACPI_NATIVE_UINT        i;
+    ACPI_STATUS             Status;
+
+
+    /*
+     * Initialize the structure that keeps track of fixed event handlers
+     * and enable the fixed events.
+     */
+    for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
+    {
+        AcpiGbl_FixedEventHandlers[i].Handler = NULL;
+        AcpiGbl_FixedEventHandlers[i].Context = NULL;
+
+        /* Enable the fixed event */
+
+        if (AcpiGbl_FixedEventInfo[i].EnableRegisterId != 0xFF)
+        {
+            Status = AcpiSetRegister (
+                        AcpiGbl_FixedEventInfo[i].EnableRegisterId, 0);
+            if (ACPI_FAILURE (Status))
+            {
+                return (Status);
+            }
+        }
+    }
+
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvFixedEventDetect
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
+ *
+ * DESCRIPTION: Checks the PM status register for active fixed events
+ *
+ ******************************************************************************/
+
+UINT32
+AcpiEvFixedEventDetect (
+    void)
+{
+    UINT32                  IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
+    UINT32                  FixedStatus;
+    UINT32                  FixedEnable;
+    ACPI_NATIVE_UINT        i;
+
+
+    ACPI_FUNCTION_NAME (EvFixedEventDetect);
+
+
+    /*
+     * Read the fixed feature status and enable registers, as all the cases
+     * depend on their values.  Ignore errors here.
+     */
+    (void) AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS,
+                &FixedStatus);
+    (void) AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_ENABLE,
+                &FixedEnable);
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
+        "Fixed Event Block: Enable %08X Status %08X\n",
+        FixedEnable, FixedStatus));
+
+    /*
+     * Check for all possible Fixed Events and dispatch those that are active
+     */
+    for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
+    {
+        /* Both the status and enable bits must be on for this event */
+
+        if ((FixedStatus & AcpiGbl_FixedEventInfo[i].StatusBitMask) &&
+            (FixedEnable & AcpiGbl_FixedEventInfo[i].EnableBitMask))
+        {
+            /* Found an active (signalled) event */
+
+            IntStatus |= AcpiEvFixedEventDispatch ((UINT32) i);
+        }
+    }
+
+    return (IntStatus);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvFixedEventDispatch
+ *
+ * PARAMETERS:  Event               - Event type
+ *
+ * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
+ *
+ * DESCRIPTION: Clears the status bit for the requested event, calls the
+ *              handler that previously registered for the event.
+ *
+ ******************************************************************************/
+
+static UINT32
+AcpiEvFixedEventDispatch (
+    UINT32                  Event)
+{
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    /* Clear the status bit */
+
+    (void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId, 1);
+
+    /*
+     * Make sure we've got a handler.  If not, report an error.
+     * The event is disabled to prevent further interrupts.
+     */
+    if (NULL == AcpiGbl_FixedEventHandlers[Event].Handler)
+    {
+        (void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 0);
+
+        ACPI_ERROR ((AE_INFO,
+            "No installed handler for fixed event [%08X]",
+            Event));
+
+        return (ACPI_INTERRUPT_NOT_HANDLED);
+    }
+
+    /* Invoke the Fixed Event handler */
+
+    return ((AcpiGbl_FixedEventHandlers[Event].Handler)(
+                                AcpiGbl_FixedEventHandlers[Event].Context));
+}
+
+