10d02842fSSascha Wildner /******************************************************************************
20d02842fSSascha Wildner *
30d02842fSSascha Wildner * Module Name: evxfregn - External Interfaces, ACPI Operation Regions and
40d02842fSSascha Wildner * Address Spaces.
50d02842fSSascha Wildner *
60d02842fSSascha Wildner *****************************************************************************/
70d02842fSSascha Wildner
8b4315fc7SSascha Wildner /******************************************************************************
9b4315fc7SSascha Wildner *
10b4315fc7SSascha Wildner * 1. Copyright Notice
11b4315fc7SSascha Wildner *
12383048acSSascha Wildner * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp.
130d02842fSSascha Wildner * All rights reserved.
140d02842fSSascha Wildner *
15b4315fc7SSascha Wildner * 2. License
16b4315fc7SSascha Wildner *
17b4315fc7SSascha Wildner * 2.1. This is your license from Intel Corp. under its intellectual property
18b4315fc7SSascha Wildner * rights. You may have additional license terms from the party that provided
19b4315fc7SSascha Wildner * you this software, covering your right to use that party's intellectual
20b4315fc7SSascha Wildner * property rights.
21b4315fc7SSascha Wildner *
22b4315fc7SSascha Wildner * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23b4315fc7SSascha Wildner * copy of the source code appearing in this file ("Covered Code") an
24b4315fc7SSascha Wildner * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25b4315fc7SSascha Wildner * base code distributed originally by Intel ("Original Intel Code") to copy,
26b4315fc7SSascha Wildner * make derivatives, distribute, use and display any portion of the Covered
27b4315fc7SSascha Wildner * Code in any form, with the right to sublicense such rights; and
28b4315fc7SSascha Wildner *
29b4315fc7SSascha Wildner * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30b4315fc7SSascha Wildner * license (with the right to sublicense), under only those claims of Intel
31b4315fc7SSascha Wildner * patents that are infringed by the Original Intel Code, to make, use, sell,
32b4315fc7SSascha Wildner * offer to sell, and import the Covered Code and derivative works thereof
33b4315fc7SSascha Wildner * solely to the minimum extent necessary to exercise the above copyright
34b4315fc7SSascha Wildner * license, and in no event shall the patent license extend to any additions
35b4315fc7SSascha Wildner * to or modifications of the Original Intel Code. No other license or right
36b4315fc7SSascha Wildner * is granted directly or by implication, estoppel or otherwise;
37b4315fc7SSascha Wildner *
38b4315fc7SSascha Wildner * The above copyright and patent license is granted only if the following
39b4315fc7SSascha Wildner * conditions are met:
40b4315fc7SSascha Wildner *
41b4315fc7SSascha Wildner * 3. Conditions
42b4315fc7SSascha Wildner *
43b4315fc7SSascha Wildner * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered
45b4315fc7SSascha Wildner * Code or modification with rights to further distribute source must include
46b4315fc7SSascha Wildner * the above Copyright Notice, the above License, this list of Conditions,
47b4315fc7SSascha Wildner * and the following Disclaimer and Export Compliance provision. In addition,
48b4315fc7SSascha Wildner * Licensee must cause all Covered Code to which Licensee contributes to
49b4315fc7SSascha Wildner * contain a file documenting the changes Licensee made to create that Covered
50b4315fc7SSascha Wildner * Code and the date of any change. Licensee must include in that file the
51b4315fc7SSascha Wildner * documentation of any changes made by any predecessor Licensee. Licensee
52b4315fc7SSascha Wildner * must include a prominent statement that the modification is derived,
53b4315fc7SSascha Wildner * directly or indirectly, from Original Intel Code.
54b4315fc7SSascha Wildner *
55b4315fc7SSascha Wildner * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered
57b4315fc7SSascha Wildner * Code or modification without rights to further distribute source must
58b4315fc7SSascha Wildner * include the following Disclaimer and Export Compliance provision in the
59b4315fc7SSascha Wildner * documentation and/or other materials provided with distribution. In
60b4315fc7SSascha Wildner * addition, Licensee may not authorize further sublicense of source of any
61b4315fc7SSascha Wildner * portion of the Covered Code, and must include terms to the effect that the
62b4315fc7SSascha Wildner * license from Licensee to its licensee is limited to the intellectual
63b4315fc7SSascha Wildner * property embodied in the software Licensee provides to its licensee, and
64b4315fc7SSascha Wildner * not to intellectual property embodied in modifications its licensee may
65b4315fc7SSascha Wildner * make.
66b4315fc7SSascha Wildner *
67b4315fc7SSascha Wildner * 3.3. Redistribution of Executable. Redistribution in executable form of any
68b4315fc7SSascha Wildner * substantial portion of the Covered Code or modification must reproduce the
69b4315fc7SSascha Wildner * above Copyright Notice, and the following Disclaimer and Export Compliance
70b4315fc7SSascha Wildner * provision in the documentation and/or other materials provided with the
71b4315fc7SSascha Wildner * distribution.
72b4315fc7SSascha Wildner *
73b4315fc7SSascha Wildner * 3.4. Intel retains all right, title, and interest in and to the Original
74b4315fc7SSascha Wildner * Intel Code.
75b4315fc7SSascha Wildner *
76b4315fc7SSascha Wildner * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77b4315fc7SSascha Wildner * Intel shall be used in advertising or otherwise to promote the sale, use or
78b4315fc7SSascha Wildner * other dealings in products derived from or relating to the Covered Code
79b4315fc7SSascha Wildner * without prior written authorization from Intel.
80b4315fc7SSascha Wildner *
81b4315fc7SSascha Wildner * 4. Disclaimer and Export Compliance
82b4315fc7SSascha Wildner *
83b4315fc7SSascha Wildner * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84b4315fc7SSascha Wildner * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85b4315fc7SSascha Wildner * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86b4315fc7SSascha Wildner * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87b4315fc7SSascha Wildner * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88b4315fc7SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89b4315fc7SSascha Wildner * PARTICULAR PURPOSE.
90b4315fc7SSascha Wildner *
91b4315fc7SSascha Wildner * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92b4315fc7SSascha Wildner * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93b4315fc7SSascha Wildner * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94b4315fc7SSascha Wildner * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95b4315fc7SSascha Wildner * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96b4315fc7SSascha Wildner * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97b4315fc7SSascha Wildner * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98b4315fc7SSascha Wildner * LIMITED REMEDY.
99b4315fc7SSascha Wildner *
100b4315fc7SSascha Wildner * 4.3. Licensee shall not export, either directly or indirectly, any of this
101b4315fc7SSascha Wildner * software or system incorporating such software without first obtaining any
102b4315fc7SSascha Wildner * required license or other approval from the U. S. Department of Commerce or
103b4315fc7SSascha Wildner * any other agency or department of the United States Government. In the
104b4315fc7SSascha Wildner * event Licensee exports any such software from the United States or
105b4315fc7SSascha Wildner * re-exports any such software from a foreign destination, Licensee shall
106b4315fc7SSascha Wildner * ensure that the distribution and export/re-export of the software is in
107b4315fc7SSascha Wildner * compliance with all laws, regulations, orders, or other restrictions of the
108b4315fc7SSascha Wildner * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109b4315fc7SSascha Wildner * any of its subsidiaries will export/re-export any technical data, process,
110b4315fc7SSascha Wildner * software, or service, directly or indirectly, to any country for which the
111b4315fc7SSascha Wildner * United States government or any agency thereof requires an export license,
112b4315fc7SSascha Wildner * other governmental approval, or letter of assurance, without first obtaining
113b4315fc7SSascha Wildner * such license, approval or letter.
114b4315fc7SSascha Wildner *
115b4315fc7SSascha Wildner *****************************************************************************
116b4315fc7SSascha Wildner *
117b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the
118b4315fc7SSascha Wildner * following license:
119b4315fc7SSascha Wildner *
1200d02842fSSascha Wildner * Redistribution and use in source and binary forms, with or without
1210d02842fSSascha Wildner * modification, are permitted provided that the following conditions
1220d02842fSSascha Wildner * are met:
1230d02842fSSascha Wildner * 1. Redistributions of source code must retain the above copyright
1240d02842fSSascha Wildner * notice, this list of conditions, and the following disclaimer,
1250d02842fSSascha Wildner * without modification.
1260d02842fSSascha Wildner * 2. Redistributions in binary form must reproduce at minimum a disclaimer
1270d02842fSSascha Wildner * substantially similar to the "NO WARRANTY" disclaimer below
1280d02842fSSascha Wildner * ("Disclaimer") and any redistribution must be conditioned upon
1290d02842fSSascha Wildner * including a substantially similar Disclaimer requirement for further
1300d02842fSSascha Wildner * binary redistribution.
1310d02842fSSascha Wildner * 3. Neither the names of the above-listed copyright holders nor the names
1320d02842fSSascha Wildner * of any contributors may be used to endorse or promote products derived
1330d02842fSSascha Wildner * from this software without specific prior written permission.
1340d02842fSSascha Wildner *
135b4315fc7SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
136b4315fc7SSascha Wildner * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
137b4315fc7SSascha Wildner * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
138b4315fc7SSascha Wildner * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
139b4315fc7SSascha Wildner * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
140b4315fc7SSascha Wildner * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
141b4315fc7SSascha Wildner * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
142b4315fc7SSascha Wildner * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
143b4315fc7SSascha Wildner * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
144b4315fc7SSascha Wildner * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
145b4315fc7SSascha Wildner * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146b4315fc7SSascha Wildner *
147b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the
1480d02842fSSascha Wildner * GNU General Public License ("GPL") version 2 as published by the Free
1490d02842fSSascha Wildner * Software Foundation.
1500d02842fSSascha Wildner *
151b4315fc7SSascha Wildner *****************************************************************************/
1520d02842fSSascha Wildner
1530d02842fSSascha Wildner #define EXPORT_ACPI_INTERFACES
1540d02842fSSascha Wildner
1550d02842fSSascha Wildner #include "acpi.h"
1560d02842fSSascha Wildner #include "accommon.h"
1570d02842fSSascha Wildner #include "acnamesp.h"
1580d02842fSSascha Wildner #include "acevents.h"
1590d02842fSSascha Wildner
1600d02842fSSascha Wildner #define _COMPONENT ACPI_EVENTS
1610d02842fSSascha Wildner ACPI_MODULE_NAME ("evxfregn")
1620d02842fSSascha Wildner
1630d02842fSSascha Wildner
1640d02842fSSascha Wildner /*******************************************************************************
1650d02842fSSascha Wildner *
1660d02842fSSascha Wildner * FUNCTION: AcpiInstallAddressSpaceHandler
1670d02842fSSascha Wildner *
1680d02842fSSascha Wildner * PARAMETERS: Device - Handle for the device
1690d02842fSSascha Wildner * SpaceId - The address space ID
1700d02842fSSascha Wildner * Handler - Address of the handler
1710d02842fSSascha Wildner * Setup - Address of the setup function
1720d02842fSSascha Wildner * Context - Value passed to the handler on each access
1730d02842fSSascha Wildner *
1740d02842fSSascha Wildner * RETURN: Status
1750d02842fSSascha Wildner *
1760d02842fSSascha Wildner * DESCRIPTION: Install a handler for all OpRegions of a given SpaceId.
1770d02842fSSascha Wildner *
1780d02842fSSascha Wildner * NOTE: This function should only be called after AcpiEnableSubsystem has
1790d02842fSSascha Wildner * been called. This is because any _REG methods associated with the Space ID
1800d02842fSSascha Wildner * are executed here, and these methods can only be safely executed after
1810d02842fSSascha Wildner * the default handlers have been installed and the hardware has been
1820d02842fSSascha Wildner * initialized (via AcpiEnableSubsystem.)
1830d02842fSSascha Wildner *
1840d02842fSSascha Wildner ******************************************************************************/
1850d02842fSSascha Wildner
1860d02842fSSascha Wildner ACPI_STATUS
AcpiInstallAddressSpaceHandler(ACPI_HANDLE Device,ACPI_ADR_SPACE_TYPE SpaceId,ACPI_ADR_SPACE_HANDLER Handler,ACPI_ADR_SPACE_SETUP Setup,void * Context)1870d02842fSSascha Wildner AcpiInstallAddressSpaceHandler (
1880d02842fSSascha Wildner ACPI_HANDLE Device,
1890d02842fSSascha Wildner ACPI_ADR_SPACE_TYPE SpaceId,
1900d02842fSSascha Wildner ACPI_ADR_SPACE_HANDLER Handler,
1910d02842fSSascha Wildner ACPI_ADR_SPACE_SETUP Setup,
1920d02842fSSascha Wildner void *Context)
1930d02842fSSascha Wildner {
1940d02842fSSascha Wildner ACPI_NAMESPACE_NODE *Node;
1950d02842fSSascha Wildner ACPI_STATUS Status;
1960d02842fSSascha Wildner
1970d02842fSSascha Wildner
1980d02842fSSascha Wildner ACPI_FUNCTION_TRACE (AcpiInstallAddressSpaceHandler);
1990d02842fSSascha Wildner
2000d02842fSSascha Wildner
2010d02842fSSascha Wildner /* Parameter validation */
2020d02842fSSascha Wildner
2030d02842fSSascha Wildner if (!Device)
2040d02842fSSascha Wildner {
2050d02842fSSascha Wildner return_ACPI_STATUS (AE_BAD_PARAMETER);
2060d02842fSSascha Wildner }
2070d02842fSSascha Wildner
2080d02842fSSascha Wildner Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
2090d02842fSSascha Wildner if (ACPI_FAILURE (Status))
2100d02842fSSascha Wildner {
2110d02842fSSascha Wildner return_ACPI_STATUS (Status);
2120d02842fSSascha Wildner }
2130d02842fSSascha Wildner
2140d02842fSSascha Wildner /* Convert and validate the device handle */
2150d02842fSSascha Wildner
2160d02842fSSascha Wildner Node = AcpiNsValidateHandle (Device);
2170d02842fSSascha Wildner if (!Node)
2180d02842fSSascha Wildner {
2190d02842fSSascha Wildner Status = AE_BAD_PARAMETER;
2200d02842fSSascha Wildner goto UnlockAndExit;
2210d02842fSSascha Wildner }
2220d02842fSSascha Wildner
2230d02842fSSascha Wildner /* Install the handler for all Regions for this Space ID */
2240d02842fSSascha Wildner
225820c5b08SSascha Wildner Status = AcpiEvInstallSpaceHandler (
226820c5b08SSascha Wildner Node, SpaceId, Handler, Setup, Context);
2270d02842fSSascha Wildner if (ACPI_FAILURE (Status))
2280d02842fSSascha Wildner {
2290d02842fSSascha Wildner goto UnlockAndExit;
2300d02842fSSascha Wildner }
2310d02842fSSascha Wildner
2320d02842fSSascha Wildner /* Run all _REG methods for this address space */
2330d02842fSSascha Wildner
234f5f76cf2SSascha Wildner AcpiEvExecuteRegMethods (Node, SpaceId, ACPI_REG_CONNECT);
2350d02842fSSascha Wildner
2360d02842fSSascha Wildner
2370d02842fSSascha Wildner UnlockAndExit:
2380d02842fSSascha Wildner (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
2390d02842fSSascha Wildner return_ACPI_STATUS (Status);
2400d02842fSSascha Wildner }
2410d02842fSSascha Wildner
ACPI_EXPORT_SYMBOL(AcpiInstallAddressSpaceHandler)2420d02842fSSascha Wildner ACPI_EXPORT_SYMBOL (AcpiInstallAddressSpaceHandler)
2430d02842fSSascha Wildner
2440d02842fSSascha Wildner
2450d02842fSSascha Wildner /*******************************************************************************
2460d02842fSSascha Wildner *
2470d02842fSSascha Wildner * FUNCTION: AcpiRemoveAddressSpaceHandler
2480d02842fSSascha Wildner *
2490d02842fSSascha Wildner * PARAMETERS: Device - Handle for the device
2500d02842fSSascha Wildner * SpaceId - The address space ID
2510d02842fSSascha Wildner * Handler - Address of the handler
2520d02842fSSascha Wildner *
2530d02842fSSascha Wildner * RETURN: Status
2540d02842fSSascha Wildner *
2550d02842fSSascha Wildner * DESCRIPTION: Remove a previously installed handler.
2560d02842fSSascha Wildner *
2570d02842fSSascha Wildner ******************************************************************************/
2580d02842fSSascha Wildner
2590d02842fSSascha Wildner ACPI_STATUS
2600d02842fSSascha Wildner AcpiRemoveAddressSpaceHandler (
2610d02842fSSascha Wildner ACPI_HANDLE Device,
2620d02842fSSascha Wildner ACPI_ADR_SPACE_TYPE SpaceId,
2630d02842fSSascha Wildner ACPI_ADR_SPACE_HANDLER Handler)
2640d02842fSSascha Wildner {
2650d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc;
2660d02842fSSascha Wildner ACPI_OPERAND_OBJECT *HandlerObj;
2670d02842fSSascha Wildner ACPI_OPERAND_OBJECT *RegionObj;
2680d02842fSSascha Wildner ACPI_OPERAND_OBJECT **LastObjPtr;
2690d02842fSSascha Wildner ACPI_NAMESPACE_NODE *Node;
2700d02842fSSascha Wildner ACPI_STATUS Status;
2710d02842fSSascha Wildner
2720d02842fSSascha Wildner
2730d02842fSSascha Wildner ACPI_FUNCTION_TRACE (AcpiRemoveAddressSpaceHandler);
2740d02842fSSascha Wildner
2750d02842fSSascha Wildner
2760d02842fSSascha Wildner /* Parameter validation */
2770d02842fSSascha Wildner
2780d02842fSSascha Wildner if (!Device)
2790d02842fSSascha Wildner {
2800d02842fSSascha Wildner return_ACPI_STATUS (AE_BAD_PARAMETER);
2810d02842fSSascha Wildner }
2820d02842fSSascha Wildner
2830d02842fSSascha Wildner Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
2840d02842fSSascha Wildner if (ACPI_FAILURE (Status))
2850d02842fSSascha Wildner {
2860d02842fSSascha Wildner return_ACPI_STATUS (Status);
2870d02842fSSascha Wildner }
2880d02842fSSascha Wildner
2890d02842fSSascha Wildner /* Convert and validate the device handle */
2900d02842fSSascha Wildner
2910d02842fSSascha Wildner Node = AcpiNsValidateHandle (Device);
2920d02842fSSascha Wildner if (!Node ||
2930d02842fSSascha Wildner ((Node->Type != ACPI_TYPE_DEVICE) &&
2940d02842fSSascha Wildner (Node->Type != ACPI_TYPE_PROCESSOR) &&
2950d02842fSSascha Wildner (Node->Type != ACPI_TYPE_THERMAL) &&
2960d02842fSSascha Wildner (Node != AcpiGbl_RootNode)))
2970d02842fSSascha Wildner {
2980d02842fSSascha Wildner Status = AE_BAD_PARAMETER;
2990d02842fSSascha Wildner goto UnlockAndExit;
3000d02842fSSascha Wildner }
3010d02842fSSascha Wildner
3020d02842fSSascha Wildner /* Make sure the internal object exists */
3030d02842fSSascha Wildner
3040d02842fSSascha Wildner ObjDesc = AcpiNsGetAttachedObject (Node);
3050d02842fSSascha Wildner if (!ObjDesc)
3060d02842fSSascha Wildner {
3070d02842fSSascha Wildner Status = AE_NOT_EXIST;
3080d02842fSSascha Wildner goto UnlockAndExit;
3090d02842fSSascha Wildner }
3100d02842fSSascha Wildner
3110d02842fSSascha Wildner /* Find the address handler the user requested */
3120d02842fSSascha Wildner
313f5f76cf2SSascha Wildner HandlerObj = ObjDesc->CommonNotify.Handler;
314f5f76cf2SSascha Wildner LastObjPtr = &ObjDesc->CommonNotify.Handler;
3150d02842fSSascha Wildner while (HandlerObj)
3160d02842fSSascha Wildner {
3170d02842fSSascha Wildner /* We have a handler, see if user requested this one */
3180d02842fSSascha Wildner
3190d02842fSSascha Wildner if (HandlerObj->AddressSpace.SpaceId == SpaceId)
3200d02842fSSascha Wildner {
3210d02842fSSascha Wildner /* Handler must be the same as the installed handler */
3220d02842fSSascha Wildner
3230d02842fSSascha Wildner if (HandlerObj->AddressSpace.Handler != Handler)
3240d02842fSSascha Wildner {
3250d02842fSSascha Wildner Status = AE_BAD_PARAMETER;
3260d02842fSSascha Wildner goto UnlockAndExit;
3270d02842fSSascha Wildner }
3280d02842fSSascha Wildner
3290d02842fSSascha Wildner /* Matched SpaceId, first dereference this in the Regions */
3300d02842fSSascha Wildner
3310d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
3320d02842fSSascha Wildner "Removing address handler %p(%p) for region %s "
3330d02842fSSascha Wildner "on Device %p(%p)\n",
3340d02842fSSascha Wildner HandlerObj, Handler, AcpiUtGetRegionName (SpaceId),
3350d02842fSSascha Wildner Node, ObjDesc));
3360d02842fSSascha Wildner
3370d02842fSSascha Wildner RegionObj = HandlerObj->AddressSpace.RegionList;
3380d02842fSSascha Wildner
3390d02842fSSascha Wildner /* Walk the handler's region list */
3400d02842fSSascha Wildner
3410d02842fSSascha Wildner while (RegionObj)
3420d02842fSSascha Wildner {
3430d02842fSSascha Wildner /*
3440d02842fSSascha Wildner * First disassociate the handler from the region.
3450d02842fSSascha Wildner *
3460d02842fSSascha Wildner * NOTE: this doesn't mean that the region goes away
3470d02842fSSascha Wildner * The region is just inaccessible as indicated to
3480d02842fSSascha Wildner * the _REG method
3490d02842fSSascha Wildner */
3500d02842fSSascha Wildner AcpiEvDetachRegion (RegionObj, TRUE);
3510d02842fSSascha Wildner
3520d02842fSSascha Wildner /*
3530d02842fSSascha Wildner * Walk the list: Just grab the head because the
3540d02842fSSascha Wildner * DetachRegion removed the previous head.
3550d02842fSSascha Wildner */
3560d02842fSSascha Wildner RegionObj = HandlerObj->AddressSpace.RegionList;
3570d02842fSSascha Wildner }
3580d02842fSSascha Wildner
3590d02842fSSascha Wildner /* Remove this Handler object from the list */
3600d02842fSSascha Wildner
3610d02842fSSascha Wildner *LastObjPtr = HandlerObj->AddressSpace.Next;
3620d02842fSSascha Wildner
3630d02842fSSascha Wildner /* Now we can delete the handler object */
3640d02842fSSascha Wildner
365*01d5d5dfSSascha Wildner AcpiOsReleaseMutex (HandlerObj->AddressSpace.ContextMutex);
3660d02842fSSascha Wildner AcpiUtRemoveReference (HandlerObj);
3670d02842fSSascha Wildner goto UnlockAndExit;
3680d02842fSSascha Wildner }
3690d02842fSSascha Wildner
3700d02842fSSascha Wildner /* Walk the linked list of handlers */
3710d02842fSSascha Wildner
3720d02842fSSascha Wildner LastObjPtr = &HandlerObj->AddressSpace.Next;
3730d02842fSSascha Wildner HandlerObj = HandlerObj->AddressSpace.Next;
3740d02842fSSascha Wildner }
3750d02842fSSascha Wildner
3760d02842fSSascha Wildner /* The handler does not exist */
3770d02842fSSascha Wildner
3780d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
3790d02842fSSascha Wildner "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n",
3800d02842fSSascha Wildner Handler, AcpiUtGetRegionName (SpaceId), SpaceId, Node, ObjDesc));
3810d02842fSSascha Wildner
3820d02842fSSascha Wildner Status = AE_NOT_EXIST;
3830d02842fSSascha Wildner
3840d02842fSSascha Wildner UnlockAndExit:
3850d02842fSSascha Wildner (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
3860d02842fSSascha Wildner return_ACPI_STATUS (Status);
3870d02842fSSascha Wildner }
3880d02842fSSascha Wildner
3890d02842fSSascha Wildner ACPI_EXPORT_SYMBOL (AcpiRemoveAddressSpaceHandler)
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