--- old/usr/src/uts/intel/io/acpica/events/evregion.c	ven. janv. 17 07:31:47 2014
+++ /dev/null	ven. janv. 17 07:31:21 2014
@@ -1,1340 +0,0 @@
-/******************************************************************************
- *
- * Module Name: evregion - ACPI AddressSpace (OpRegion) handler dispatch
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2011, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-
-#define __EVREGION_C__
-
-#include "acpi.h"
-#include "accommon.h"
-#include "acevents.h"
-#include "acnamesp.h"
-#include "acinterp.h"
-
-#define _COMPONENT          ACPI_EVENTS
-        ACPI_MODULE_NAME    ("evregion")
-
-
-/* Local prototypes */
-
-static BOOLEAN
-AcpiEvHasDefaultHandler (
-    ACPI_NAMESPACE_NODE     *Node,
-    ACPI_ADR_SPACE_TYPE     SpaceId);
-
-static void
-AcpiEvOrphanEcRegMethod (
-    void);
-
-static ACPI_STATUS
-AcpiEvRegRun (
-    ACPI_HANDLE             ObjHandle,
-    UINT32                  Level,
-    void                    *Context,
-    void                    **ReturnValue);
-
-static ACPI_STATUS
-AcpiEvInstallHandler (
-    ACPI_HANDLE             ObjHandle,
-    UINT32                  Level,
-    void                    *Context,
-    void                    **ReturnValue);
-
-/* These are the address spaces that will get default handlers */
-
-#define ACPI_NUM_DEFAULT_SPACES     4
-
-static UINT8        AcpiGbl_DefaultAddressSpaces[ACPI_NUM_DEFAULT_SPACES] =
-{
-    ACPI_ADR_SPACE_SYSTEM_MEMORY,
-    ACPI_ADR_SPACE_SYSTEM_IO,
-    ACPI_ADR_SPACE_PCI_CONFIG,
-    ACPI_ADR_SPACE_DATA_TABLE
-};
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvInstallRegionHandlers
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Installs the core subsystem default address space handlers.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvInstallRegionHandlers (
-    void)
-{
-    ACPI_STATUS             Status;
-    UINT32                  i;
-
-
-    ACPI_FUNCTION_TRACE (EvInstallRegionHandlers);
-
-
-    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
-    if (ACPI_FAILURE (Status))
-    {
-        return_ACPI_STATUS (Status);
-    }
-
-    /*
-     * All address spaces (PCI Config, EC, SMBus) are scope dependent and
-     * registration must occur for a specific device.
-     *
-     * In the case of the system memory and IO address spaces there is
-     * currently no device associated with the address space. For these we
-     * use the root.
-     *
-     * We install the default PCI config space handler at the root so that
-     * this space is immediately available even though the we have not
-     * enumerated all the PCI Root Buses yet. This is to conform to the ACPI
-     * specification which states that the PCI config space must be always
-     * available -- even though we are nowhere near ready to find the PCI root
-     * buses at this point.
-     *
-     * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
-     * has already been installed (via AcpiInstallAddressSpaceHandler).
-     * Similar for AE_SAME_HANDLER.
-     */
-    for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++)
-    {
-        Status = AcpiEvInstallSpaceHandler (AcpiGbl_RootNode,
-                    AcpiGbl_DefaultAddressSpaces[i],
-                    ACPI_DEFAULT_HANDLER, NULL, NULL);
-        switch (Status)
-        {
-        case AE_OK:
-        case AE_SAME_HANDLER:
-        case AE_ALREADY_EXISTS:
-
-            /* These exceptions are all OK */
-
-            Status = AE_OK;
-            break;
-
-        default:
-
-            goto UnlockAndExit;
-        }
-    }
-
-UnlockAndExit:
-    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvHasDefaultHandler
- *
- * PARAMETERS:  Node                - Namespace node for the device
- *              SpaceId             - The address space ID
- *
- * RETURN:      TRUE if default handler is installed, FALSE otherwise
- *
- * DESCRIPTION: Check if the default handler is installed for the requested
- *              space ID.
- *
- ******************************************************************************/
-
-static BOOLEAN
-AcpiEvHasDefaultHandler (
-    ACPI_NAMESPACE_NODE     *Node,
-    ACPI_ADR_SPACE_TYPE     SpaceId)
-{
-    ACPI_OPERAND_OBJECT     *ObjDesc;
-    ACPI_OPERAND_OBJECT     *HandlerObj;
-
-
-    /* Must have an existing internal object */
-
-    ObjDesc = AcpiNsGetAttachedObject (Node);
-    if (ObjDesc)
-    {
-        HandlerObj = ObjDesc->Device.Handler;
-
-        /* Walk the linked list of handlers for this object */
-
-        while (HandlerObj)
-        {
-            if (HandlerObj->AddressSpace.SpaceId == SpaceId)
-            {
-                if (HandlerObj->AddressSpace.HandlerFlags &
-                        ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
-                {
-                    return (TRUE);
-                }
-            }
-
-            HandlerObj = HandlerObj->AddressSpace.Next;
-        }
-    }
-
-    return (FALSE);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvInitializeOpRegions
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Execute _REG methods for all Operation Regions that have
- *              an installed default region handler.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvInitializeOpRegions (
-    void)
-{
-    ACPI_STATUS             Status;
-    UINT32                  i;
-
-
-    ACPI_FUNCTION_TRACE (EvInitializeOpRegions);
-
-
-    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
-    if (ACPI_FAILURE (Status))
-    {
-        return_ACPI_STATUS (Status);
-    }
-
-    /* Run the _REG methods for OpRegions in each default address space */
-
-    for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++)
-    {
-        /*
-         * Make sure the installed handler is the DEFAULT handler. If not the
-         * default, the _REG methods will have already been run (when the
-         * handler was installed)
-         */
-        if (AcpiEvHasDefaultHandler (AcpiGbl_RootNode,
-               AcpiGbl_DefaultAddressSpaces[i]))
-        {
-            Status = AcpiEvExecuteRegMethods (AcpiGbl_RootNode,
-                        AcpiGbl_DefaultAddressSpaces[i]);
-        }
-    }
-
-    AcpiGbl_RegMethodsExecuted = TRUE;
-
-    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvExecuteRegMethod
- *
- * PARAMETERS:  RegionObj           - Region object
- *              Function            - Passed to _REG: On (1) or Off (0)
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Execute _REG method for a region
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvExecuteRegMethod (
-    ACPI_OPERAND_OBJECT     *RegionObj,
-    UINT32                  Function)
-{
-    ACPI_EVALUATE_INFO      *Info;
-    ACPI_OPERAND_OBJECT     *Args[3];
-    ACPI_OPERAND_OBJECT     *RegionObj2;
-    ACPI_STATUS             Status;
-
-
-    ACPI_FUNCTION_TRACE (EvExecuteRegMethod);
-
-
-    RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
-    if (!RegionObj2)
-    {
-        return_ACPI_STATUS (AE_NOT_EXIST);
-    }
-
-    if (RegionObj2->Extra.Method_REG == NULL)
-    {
-        return_ACPI_STATUS (AE_OK);
-    }
-
-    /* Allocate and initialize the evaluation information block */
-
-    Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
-    if (!Info)
-    {
-        return_ACPI_STATUS (AE_NO_MEMORY);
-    }
-
-    Info->PrefixNode = RegionObj2->Extra.Method_REG;
-    Info->Pathname = NULL;
-    Info->Parameters = Args;
-    Info->Flags = ACPI_IGNORE_RETURN_VALUE;
-
-    /*
-     * The _REG method has two arguments:
-     *
-     * Arg0 - Integer:
-     *  Operation region space ID Same value as RegionObj->Region.SpaceId
-     *
-     * Arg1 - Integer:
-     *  connection status 1 for connecting the handler, 0 for disconnecting
-     *  the handler (Passed as a parameter)
-     */
-    Args[0] = AcpiUtCreateIntegerObject ((UINT64) RegionObj->Region.SpaceId);
-    if (!Args[0])
-    {
-        Status = AE_NO_MEMORY;
-        goto Cleanup1;
-    }
-
-    Args[1] = AcpiUtCreateIntegerObject ((UINT64) Function);
-    if (!Args[1])
-    {
-        Status = AE_NO_MEMORY;
-        goto Cleanup2;
-    }
-
-    Args[2] = NULL; /* Terminate list */
-
-    /* Execute the method, no return value */
-
-    ACPI_DEBUG_EXEC (
-        AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Info->PrefixNode, NULL));
-
-    Status = AcpiNsEvaluate (Info);
-    AcpiUtRemoveReference (Args[1]);
-
-Cleanup2:
-    AcpiUtRemoveReference (Args[0]);
-
-Cleanup1:
-    ACPI_FREE (Info);
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvAddressSpaceDispatch
- *
- * PARAMETERS:  RegionObj           - Internal region object
- *              Function            - Read or Write operation
- *              RegionOffset        - Where in the region to read or write
- *              BitWidth            - Field width in bits (8, 16, 32, or 64)
- *              Value               - Pointer to in or out value, must be
- *                                    a full 64-bit integer
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Dispatch an address space or operation region access to
- *              a previously installed handler.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvAddressSpaceDispatch (
-    ACPI_OPERAND_OBJECT     *RegionObj,
-    UINT32                  Function,
-    UINT32                  RegionOffset,
-    UINT32                  BitWidth,
-    UINT64                  *Value)
-{
-    ACPI_STATUS             Status;
-    ACPI_ADR_SPACE_HANDLER  Handler;
-    ACPI_ADR_SPACE_SETUP    RegionSetup;
-    ACPI_OPERAND_OBJECT     *HandlerDesc;
-    ACPI_OPERAND_OBJECT     *RegionObj2;
-    void                    *RegionContext = NULL;
-
-
-    ACPI_FUNCTION_TRACE (EvAddressSpaceDispatch);
-
-
-    RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
-    if (!RegionObj2)
-    {
-        return_ACPI_STATUS (AE_NOT_EXIST);
-    }
-
-    /* Ensure that there is a handler associated with this region */
-
-    HandlerDesc = RegionObj->Region.Handler;
-    if (!HandlerDesc)
-    {
-        ACPI_ERROR ((AE_INFO,
-            "No handler for Region [%4.4s] (%p) [%s]",
-            AcpiUtGetNodeName (RegionObj->Region.Node),
-            RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-
-        return_ACPI_STATUS (AE_NOT_EXIST);
-    }
-
-    /*
-     * It may be the case that the region has never been initialized.
-     * Some types of regions require special init code
-     */
-    if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
-    {
-        /* This region has not been initialized yet, do it */
-
-        RegionSetup = HandlerDesc->AddressSpace.Setup;
-        if (!RegionSetup)
-        {
-            /* No initialization routine, exit with error */
-
-            ACPI_ERROR ((AE_INFO,
-                "No init routine for region(%p) [%s]",
-                RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-            return_ACPI_STATUS (AE_NOT_EXIST);
-        }
-
-        /*
-         * We must exit the interpreter because the region setup will
-         * potentially execute control methods (for example, the _REG method
-         * for this region)
-         */
-        AcpiExExitInterpreter ();
-
-        Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE,
-                    HandlerDesc->AddressSpace.Context, &RegionContext);
-
-        /* Re-enter the interpreter */
-
-        AcpiExEnterInterpreter ();
-
-        /* Check for failure of the Region Setup */
-
-        if (ACPI_FAILURE (Status))
-        {
-            ACPI_EXCEPTION ((AE_INFO, Status,
-                "During region initialization: [%s]",
-                AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-            return_ACPI_STATUS (Status);
-        }
-
-        /* Region initialization may have been completed by RegionSetup */
-
-        if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
-        {
-            RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE;
-
-            if (RegionObj2->Extra.RegionContext)
-            {
-                /* The handler for this region was already installed */
-
-                ACPI_FREE (RegionContext);
-            }
-            else
-            {
-                /*
-                 * Save the returned context for use in all accesses to
-                 * this particular region
-                 */
-                RegionObj2->Extra.RegionContext = RegionContext;
-            }
-        }
-    }
-
-    /* We have everything we need, we can invoke the address space handler */
-
-    Handler = HandlerDesc->AddressSpace.Handler;
-
-    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-        "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
-        &RegionObj->Region.Handler->AddressSpace, Handler,
-        ACPI_FORMAT_NATIVE_UINT (RegionObj->Region.Address + RegionOffset),
-        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-
-    if (!(HandlerDesc->AddressSpace.HandlerFlags &
-            ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
-    {
-        /*
-         * For handlers other than the default (supplied) handlers, we must
-         * exit the interpreter because the handler *might* block -- we don't
-         * know what it will do, so we can't hold the lock on the intepreter.
-         */
-        AcpiExExitInterpreter();
-    }
-
-    /* Call the handler */
-
-    Status = Handler (Function,
-        (RegionObj->Region.Address + RegionOffset), BitWidth, Value,
-        HandlerDesc->AddressSpace.Context, RegionObj2->Extra.RegionContext);
-
-    if (ACPI_FAILURE (Status))
-    {
-        ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]",
-            AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-    }
-
-    if (!(HandlerDesc->AddressSpace.HandlerFlags &
-            ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
-    {
-        /*
-         * We just returned from a non-default handler, we must re-enter the
-         * interpreter
-         */
-       AcpiExEnterInterpreter ();
-    }
-
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvDetachRegion
- *
- * PARAMETERS:  RegionObj           - Region Object
- *              AcpiNsIsLocked      - Namespace Region Already Locked?
- *
- * RETURN:      None
- *
- * DESCRIPTION: Break the association between the handler and the region
- *              this is a two way association.
- *
- ******************************************************************************/
-
-void
-AcpiEvDetachRegion(
-    ACPI_OPERAND_OBJECT     *RegionObj,
-    BOOLEAN                 AcpiNsIsLocked)
-{
-    ACPI_OPERAND_OBJECT     *HandlerObj;
-    ACPI_OPERAND_OBJECT     *ObjDesc;
-    ACPI_OPERAND_OBJECT     **LastObjPtr;
-    ACPI_ADR_SPACE_SETUP    RegionSetup;
-    void                    **RegionContext;
-    ACPI_OPERAND_OBJECT     *RegionObj2;
-    ACPI_STATUS             Status;
-
-
-    ACPI_FUNCTION_TRACE (EvDetachRegion);
-
-
-    RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
-    if (!RegionObj2)
-    {
-        return_VOID;
-    }
-    RegionContext = &RegionObj2->Extra.RegionContext;
-
-    /* Get the address handler from the region object */
-
-    HandlerObj = RegionObj->Region.Handler;
-    if (!HandlerObj)
-    {
-        /* This region has no handler, all done */
-
-        return_VOID;
-    }
-
-    /* Find this region in the handler's list */
-
-    ObjDesc = HandlerObj->AddressSpace.RegionList;
-    LastObjPtr = &HandlerObj->AddressSpace.RegionList;
-
-    while (ObjDesc)
-    {
-        /* Is this the correct Region? */
-
-        if (ObjDesc == RegionObj)
-        {
-            ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-                "Removing Region %p from address handler %p\n",
-                RegionObj, HandlerObj));
-
-            /* This is it, remove it from the handler's list */
-
-            *LastObjPtr = ObjDesc->Region.Next;
-            ObjDesc->Region.Next = NULL;        /* Must clear field */
-
-            if (AcpiNsIsLocked)
-            {
-                Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
-                if (ACPI_FAILURE (Status))
-                {
-                    return_VOID;
-                }
-            }
-
-            /* Now stop region accesses by executing the _REG method */
-
-            Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_DISCONNECT);
-            if (ACPI_FAILURE (Status))
-            {
-                ACPI_EXCEPTION ((AE_INFO, Status, "from region _REG, [%s]",
-                    AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-            }
-
-            if (AcpiNsIsLocked)
-            {
-                Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
-                if (ACPI_FAILURE (Status))
-                {
-                    return_VOID;
-                }
-            }
-
-            /*
-             * If the region has been activated, call the setup handler with
-             * the deactivate notification
-             */
-            if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
-            {
-                RegionSetup = HandlerObj->AddressSpace.Setup;
-                Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE,
-                    HandlerObj->AddressSpace.Context, RegionContext);
-
-                /* Init routine may fail, Just ignore errors */
-
-                if (ACPI_FAILURE (Status))
-                {
-                    ACPI_EXCEPTION ((AE_INFO, Status,
-                        "from region handler - deactivate, [%s]",
-                        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-                }
-
-                RegionObj->Region.Flags &= ~(AOPOBJ_SETUP_COMPLETE);
-            }
-
-            /*
-             * Remove handler reference in the region
-             *
-             * NOTE: this doesn't mean that the region goes away, the region
-             * is just inaccessible as indicated to the _REG method
-             *
-             * If the region is on the handler's list, this must be the
-             * region's handler
-             */
-            RegionObj->Region.Handler = NULL;
-            AcpiUtRemoveReference (HandlerObj);
-
-            return_VOID;
-        }
-
-        /* Walk the linked list of handlers */
-
-        LastObjPtr = &ObjDesc->Region.Next;
-        ObjDesc = ObjDesc->Region.Next;
-    }
-
-    /* If we get here, the region was not in the handler's region list */
-
-    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-        "Cannot remove region %p from address handler %p\n",
-        RegionObj, HandlerObj));
-
-    return_VOID;
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvAttachRegion
- *
- * PARAMETERS:  HandlerObj          - Handler Object
- *              RegionObj           - Region Object
- *              AcpiNsIsLocked      - Namespace Region Already Locked?
- *
- * RETURN:      None
- *
- * DESCRIPTION: Create the association between the handler and the region
- *              this is a two way association.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvAttachRegion (
-    ACPI_OPERAND_OBJECT     *HandlerObj,
-    ACPI_OPERAND_OBJECT     *RegionObj,
-    BOOLEAN                 AcpiNsIsLocked)
-{
-
-    ACPI_FUNCTION_TRACE (EvAttachRegion);
-
-
-    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-        "Adding Region [%4.4s] %p to address handler %p [%s]\n",
-        AcpiUtGetNodeName (RegionObj->Region.Node),
-        RegionObj, HandlerObj,
-        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
-
-    /* Link this region to the front of the handler's list */
-
-    RegionObj->Region.Next = HandlerObj->AddressSpace.RegionList;
-    HandlerObj->AddressSpace.RegionList = RegionObj;
-
-    /* Install the region's handler */
-
-    if (RegionObj->Region.Handler)
-    {
-        return_ACPI_STATUS (AE_ALREADY_EXISTS);
-    }
-
-    RegionObj->Region.Handler = HandlerObj;
-    AcpiUtAddReference (HandlerObj);
-
-    return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvInstallHandler
- *
- * PARAMETERS:  WalkNamespace callback
- *
- * DESCRIPTION: This routine installs an address handler into objects that are
- *              of type Region or Device.
- *
- *              If the Object is a Device, and the device has a handler of
- *              the same type then the search is terminated in that branch.
- *
- *              This is because the existing handler is closer in proximity
- *              to any more regions than the one we are trying to install.
- *
- ******************************************************************************/
-
-static ACPI_STATUS
-AcpiEvInstallHandler (
-    ACPI_HANDLE             ObjHandle,
-    UINT32                  Level,
-    void                    *Context,
-    void                    **ReturnValue)
-{
-    ACPI_OPERAND_OBJECT     *HandlerObj;
-    ACPI_OPERAND_OBJECT     *NextHandlerObj;
-    ACPI_OPERAND_OBJECT     *ObjDesc;
-    ACPI_NAMESPACE_NODE     *Node;
-    ACPI_STATUS             Status;
-
-
-    ACPI_FUNCTION_NAME (EvInstallHandler);
-
-
-    HandlerObj = (ACPI_OPERAND_OBJECT  *) Context;
-
-    /* Parameter validation */
-
-    if (!HandlerObj)
-    {
-        return (AE_OK);
-    }
-
-    /* Convert and validate the device handle */
-
-    Node = AcpiNsValidateHandle (ObjHandle);
-    if (!Node)
-    {
-        return (AE_BAD_PARAMETER);
-    }
-
-    /*
-     * We only care about regions and objects that are allowed to have
-     * address space handlers
-     */
-    if ((Node->Type != ACPI_TYPE_DEVICE) &&
-        (Node->Type != ACPI_TYPE_REGION) &&
-        (Node != AcpiGbl_RootNode))
-    {
-        return (AE_OK);
-    }
-
-    /* Check for an existing internal object */
-
-    ObjDesc = AcpiNsGetAttachedObject (Node);
-    if (!ObjDesc)
-    {
-        /* No object, just exit */
-
-        return (AE_OK);
-    }
-
-    /* Devices are handled different than regions */
-
-    if (ObjDesc->Common.Type == ACPI_TYPE_DEVICE)
-    {
-        /* Check if this Device already has a handler for this address space */
-
-        NextHandlerObj = ObjDesc->Device.Handler;
-        while (NextHandlerObj)
-        {
-            /* Found a handler, is it for the same address space? */
-
-            if (NextHandlerObj->AddressSpace.SpaceId ==
-                    HandlerObj->AddressSpace.SpaceId)
-            {
-                ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-                    "Found handler for region [%s] in device %p(%p) "
-                    "handler %p\n",
-                    AcpiUtGetRegionName (HandlerObj->AddressSpace.SpaceId),
-                    ObjDesc, NextHandlerObj, HandlerObj));
-
-                /*
-                 * Since the object we found it on was a device, then it
-                 * means that someone has already installed a handler for
-                 * the branch of the namespace from this device on. Just
-                 * bail out telling the walk routine to not traverse this
-                 * branch. This preserves the scoping rule for handlers.
-                 */
-                return (AE_CTRL_DEPTH);
-            }
-
-            /* Walk the linked list of handlers attached to this device */
-
-            NextHandlerObj = NextHandlerObj->AddressSpace.Next;
-        }
-
-        /*
-         * As long as the device didn't have a handler for this space we
-         * don't care about it. We just ignore it and proceed.
-         */
-        return (AE_OK);
-    }
-
-    /* Object is a Region */
-
-    if (ObjDesc->Region.SpaceId != HandlerObj->AddressSpace.SpaceId)
-    {
-        /* This region is for a different address space, just ignore it */
-
-        return (AE_OK);
-    }
-
-    /*
-     * Now we have a region and it is for the handler's address space type.
-     *
-     * First disconnect region for any previous handler (if any)
-     */
-    AcpiEvDetachRegion (ObjDesc, FALSE);
-
-    /* Connect the region to the new handler */
-
-    Status = AcpiEvAttachRegion (HandlerObj, ObjDesc, FALSE);
-    return (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvInstallSpaceHandler
- *
- * PARAMETERS:  Node            - Namespace node for the device
- *              SpaceId         - The address space ID
- *              Handler         - Address of the handler
- *              Setup           - Address of the setup function
- *              Context         - Value passed to the handler on each access
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Install a handler for all OpRegions of a given SpaceId.
- *              Assumes namespace is locked
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvInstallSpaceHandler (
-    ACPI_NAMESPACE_NODE     *Node,
-    ACPI_ADR_SPACE_TYPE     SpaceId,
-    ACPI_ADR_SPACE_HANDLER  Handler,
-    ACPI_ADR_SPACE_SETUP    Setup,
-    void                    *Context)
-{
-    ACPI_OPERAND_OBJECT     *ObjDesc;
-    ACPI_OPERAND_OBJECT     *HandlerObj;
-    ACPI_STATUS             Status;
-    ACPI_OBJECT_TYPE        Type;
-    UINT8                  Flags = 0;
-
-
-    ACPI_FUNCTION_TRACE (EvInstallSpaceHandler);
-
-
-    /*
-     * This registration is valid for only the types below and the root. This
-     * is where the default handlers get placed.
-     */
-    if ((Node->Type != ACPI_TYPE_DEVICE)     &&
-        (Node->Type != ACPI_TYPE_PROCESSOR)  &&
-        (Node->Type != ACPI_TYPE_THERMAL)    &&
-        (Node != AcpiGbl_RootNode))
-    {
-        Status = AE_BAD_PARAMETER;
-        goto UnlockAndExit;
-    }
-
-    if (Handler == ACPI_DEFAULT_HANDLER)
-    {
-        Flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED;
-
-        switch (SpaceId)
-        {
-        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-            Handler = AcpiExSystemMemorySpaceHandler;
-            Setup   = AcpiEvSystemMemoryRegionSetup;
-            break;
-
-        case ACPI_ADR_SPACE_SYSTEM_IO:
-            Handler = AcpiExSystemIoSpaceHandler;
-            Setup   = AcpiEvIoSpaceRegionSetup;
-            break;
-
-        case ACPI_ADR_SPACE_PCI_CONFIG:
-            Handler = AcpiExPciConfigSpaceHandler;
-            Setup   = AcpiEvPciConfigRegionSetup;
-            break;
-
-        case ACPI_ADR_SPACE_CMOS:
-            Handler = AcpiExCmosSpaceHandler;
-            Setup   = AcpiEvCmosRegionSetup;
-            break;
-
-        case ACPI_ADR_SPACE_PCI_BAR_TARGET:
-            Handler = AcpiExPciBarSpaceHandler;
-            Setup   = AcpiEvPciBarRegionSetup;
-            break;
-
-        case ACPI_ADR_SPACE_DATA_TABLE:
-            Handler = AcpiExDataTableSpaceHandler;
-            Setup   = NULL;
-            break;
-
-        default:
-            Status = AE_BAD_PARAMETER;
-            goto UnlockAndExit;
-        }
-    }
-
-    /* If the caller hasn't specified a setup routine, use the default */
-
-    if (!Setup)
-    {
-        Setup = AcpiEvDefaultRegionSetup;
-    }
-
-    /* Check for an existing internal object */
-
-    ObjDesc = AcpiNsGetAttachedObject (Node);
-    if (ObjDesc)
-    {
-        /*
-         * The attached device object already exists. Make sure the handler
-         * is not already installed.
-         */
-        HandlerObj = ObjDesc->Device.Handler;
-
-        /* Walk the handler list for this device */
-
-        while (HandlerObj)
-        {
-            /* Same SpaceId indicates a handler already installed */
-
-            if (HandlerObj->AddressSpace.SpaceId == SpaceId)
-            {
-                if (HandlerObj->AddressSpace.Handler == Handler)
-                {
-                    /*
-                     * It is (relatively) OK to attempt to install the SAME
-                     * handler twice. This can easily happen with the
-                     * PCI_Config space.
-                     */
-                    Status = AE_SAME_HANDLER;
-                    goto UnlockAndExit;
-                }
-                else
-                {
-                    /* A handler is already installed */
-
-                    Status = AE_ALREADY_EXISTS;
-                }
-                goto UnlockAndExit;
-            }
-
-            /* Walk the linked list of handlers */
-
-            HandlerObj = HandlerObj->AddressSpace.Next;
-        }
-    }
-    else
-    {
-        ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-            "Creating object on Device %p while installing handler\n", Node));
-
-        /* ObjDesc does not exist, create one */
-
-        if (Node->Type == ACPI_TYPE_ANY)
-        {
-            Type = ACPI_TYPE_DEVICE;
-        }
-        else
-        {
-            Type = Node->Type;
-        }
-
-        ObjDesc = AcpiUtCreateInternalObject (Type);
-        if (!ObjDesc)
-        {
-            Status = AE_NO_MEMORY;
-            goto UnlockAndExit;
-        }
-
-        /* Init new descriptor */
-
-        ObjDesc->Common.Type = (UINT8) Type;
-
-        /* Attach the new object to the Node */
-
-        Status = AcpiNsAttachObject (Node, ObjDesc, Type);
-
-        /* Remove local reference to the object */
-
-        AcpiUtRemoveReference (ObjDesc);
-
-        if (ACPI_FAILURE (Status))
-        {
-            goto UnlockAndExit;
-        }
-    }
-
-    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
-        "Installing address handler for region %s(%X) on Device %4.4s %p(%p)\n",
-        AcpiUtGetRegionName (SpaceId), SpaceId,
-        AcpiUtGetNodeName (Node), Node, ObjDesc));
-
-    /*
-     * Install the handler
-     *
-     * At this point there is no existing handler. Just allocate the object
-     * for the handler and link it into the list.
-     */
-    HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
-    if (!HandlerObj)
-    {
-        Status = AE_NO_MEMORY;
-        goto UnlockAndExit;
-    }
-
-    /* Init handler obj */
-
-    HandlerObj->AddressSpace.SpaceId = (UINT8) SpaceId;
-    HandlerObj->AddressSpace.HandlerFlags = Flags;
-    HandlerObj->AddressSpace.RegionList = NULL;
-    HandlerObj->AddressSpace.Node = Node;
-    HandlerObj->AddressSpace.Handler = Handler;
-    HandlerObj->AddressSpace.Context = Context;
-    HandlerObj->AddressSpace.Setup  = Setup;
-
-    /* Install at head of Device.AddressSpace list */
-
-    HandlerObj->AddressSpace.Next = ObjDesc->Device.Handler;
-
-    /*
-     * The Device object is the first reference on the HandlerObj.
-     * Each region that uses the handler adds a reference.
-     */
-    ObjDesc->Device.Handler = HandlerObj;
-
-    /*
-     * Walk the namespace finding all of the regions this
-     * handler will manage.
-     *
-     * Start at the device and search the branch toward
-     * the leaf nodes until either the leaf is encountered or
-     * a device is detected that has an address handler of the
-     * same type.
-     *
-     * In either case, back up and search down the remainder
-     * of the branch
-     */
-    Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Node, ACPI_UINT32_MAX,
-                ACPI_NS_WALK_UNLOCK, AcpiEvInstallHandler, NULL,
-                HandlerObj, NULL);
-
-UnlockAndExit:
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvExecuteRegMethods
- *
- * PARAMETERS:  Node            - Namespace node for the device
- *              SpaceId         - The address space ID
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Run all _REG methods for the input Space ID;
- *              Note: assumes namespace is locked, or system init time.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvExecuteRegMethods (
-    ACPI_NAMESPACE_NODE     *Node,
-    ACPI_ADR_SPACE_TYPE     SpaceId)
-{
-    ACPI_STATUS             Status;
-
-
-    ACPI_FUNCTION_TRACE (EvExecuteRegMethods);
-
-
-    /*
-     * Run all _REG methods for all Operation Regions for this space ID. This
-     * is a separate walk in order to handle any interdependencies between
-     * regions and _REG methods. (i.e. handlers must be installed for all
-     * regions of this Space ID before we can run any _REG methods)
-     */
-    Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Node, ACPI_UINT32_MAX,
-                ACPI_NS_WALK_UNLOCK, AcpiEvRegRun, NULL,
-                &SpaceId, NULL);
-
-    /* Special case for EC: handle "orphan" _REG methods with no region */
-
-    if (SpaceId == ACPI_ADR_SPACE_EC)
-    {
-        AcpiEvOrphanEcRegMethod ();
-    }
-
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvRegRun
- *
- * PARAMETERS:  WalkNamespace callback
- *
- * DESCRIPTION: Run _REG method for region objects of the requested spaceID
- *
- ******************************************************************************/
-
-static ACPI_STATUS
-AcpiEvRegRun (
-    ACPI_HANDLE             ObjHandle,
-    UINT32                  Level,
-    void                    *Context,
-    void                    **ReturnValue)
-{
-    ACPI_OPERAND_OBJECT     *ObjDesc;
-    ACPI_NAMESPACE_NODE     *Node;
-    ACPI_ADR_SPACE_TYPE     SpaceId;
-    ACPI_STATUS             Status;
-
-
-    SpaceId = *ACPI_CAST_PTR (ACPI_ADR_SPACE_TYPE, Context);
-
-    /* Convert and validate the device handle */
-
-    Node = AcpiNsValidateHandle (ObjHandle);
-    if (!Node)
-    {
-        return (AE_BAD_PARAMETER);
-    }
-
-    /*
-     * We only care about regions.and objects that are allowed to have address
-     * space handlers
-     */
-    if ((Node->Type != ACPI_TYPE_REGION) &&
-        (Node != AcpiGbl_RootNode))
-    {
-        return (AE_OK);
-    }
-
-    /* Check for an existing internal object */
-
-    ObjDesc = AcpiNsGetAttachedObject (Node);
-    if (!ObjDesc)
-    {
-        /* No object, just exit */
-
-        return (AE_OK);
-    }
-
-    /* Object is a Region */
-
-    if (ObjDesc->Region.SpaceId != SpaceId)
-    {
-        /* This region is for a different address space, just ignore it */
-
-        return (AE_OK);
-    }
-
-    Status = AcpiEvExecuteRegMethod (ObjDesc, ACPI_REG_CONNECT);
-    return (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvOrphanEcRegMethod
- *
- * PARAMETERS:  None
- *
- * RETURN:      None
- *
- * DESCRIPTION: Execute an "orphan" _REG method that appears under the EC
- *              device. This is a _REG method that has no corresponding region
- *              within the EC device scope. The orphan _REG method appears to
- *              have been enabled by the description of the ECDT in the ACPI
- *              specification: "The availability of the region space can be
- *              detected by providing a _REG method object underneath the
- *              Embedded Controller device."
- *
- *              To quickly access the EC device, we use the EC_ID that appears
- *              within the ECDT. Otherwise, we would need to perform a time-
- *              consuming namespace walk, executing _HID methods to find the
- *              EC device.
- *
- ******************************************************************************/
-
-static void
-AcpiEvOrphanEcRegMethod (
-    void)
-{
-    ACPI_TABLE_ECDT         *Table;
-    ACPI_STATUS             Status;
-    ACPI_OBJECT_LIST        Args;
-    ACPI_OBJECT             Objects[2];
-    ACPI_NAMESPACE_NODE     *EcDeviceNode;
-    ACPI_NAMESPACE_NODE     *RegMethod;
-    ACPI_NAMESPACE_NODE     *NextNode;
-
-
-    ACPI_FUNCTION_TRACE (EvOrphanEcRegMethod);
-
-
-    /* Get the ECDT (if present in system) */
-
-    Status = AcpiGetTable (ACPI_SIG_ECDT, 0,
-        ACPI_CAST_INDIRECT_PTR (ACPI_TABLE_HEADER, &Table));
-    if (ACPI_FAILURE (Status))
-    {
-        return_VOID;
-    }
-
-    /* We need a valid EC_ID string */
-
-    if (!(*Table->Id))
-    {
-        return_VOID;
-    }
-
-    /* Namespace is currently locked, must release */
-
-    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
-
-    /* Get a handle to the EC device referenced in the ECDT */
-
-    Status = AcpiGetHandle (NULL,
-        ACPI_CAST_PTR (char, Table->Id),
-        ACPI_CAST_PTR (ACPI_HANDLE, &EcDeviceNode));
-    if (ACPI_FAILURE (Status))
-    {
-        goto Exit;
-    }
-
-    /* Get a handle to a _REG method immediately under the EC device */
-
-    Status = AcpiGetHandle (EcDeviceNode,
-        METHOD_NAME__REG, ACPI_CAST_PTR (ACPI_HANDLE, &RegMethod));
-    if (ACPI_FAILURE (Status))
-    {
-        goto Exit;
-    }
-
-    /*
-     * Execute the _REG method only if there is no Operation Region in
-     * this scope with the Embedded Controller space ID. Otherwise, it
-     * will already have been executed. Note, this allows for Regions
-     * with other space IDs to be present; but the code below will then
-     * execute the _REG method with the EC space ID argument.
-     */
-    NextNode = AcpiNsGetNextNode (EcDeviceNode, NULL);
-    while (NextNode)
-    {
-        if ((NextNode->Type == ACPI_TYPE_REGION) &&
-            (NextNode->Object) &&
-            (NextNode->Object->Region.SpaceId == ACPI_ADR_SPACE_EC))
-        {
-            goto Exit; /* Do not execute _REG */
-        }
-        NextNode = AcpiNsGetNextNode (EcDeviceNode, NextNode);
-    }
-
-    /* Evaluate the _REG(EC,Connect) method */
-
-    Args.Count = 2;
-    Args.Pointer = Objects;
-    Objects[0].Type = ACPI_TYPE_INTEGER;
-    Objects[0].Integer.Value = ACPI_ADR_SPACE_EC;
-    Objects[1].Type = ACPI_TYPE_INTEGER;
-    Objects[1].Integer.Value = ACPI_REG_CONNECT;
-
-    Status = AcpiEvaluateObject (RegMethod, NULL, &Args, NULL);
-
-Exit:
-    /* We ignore all errors from above, don't care */
-
-    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
-    return_VOID;
-}
