diff options
Diffstat (limited to 'source/components/events/evxfregn.c')
-rw-r--r-- | source/components/events/evxfregn.c | 770 |
1 files changed, 385 insertions, 385 deletions
diff --git a/source/components/events/evxfregn.c b/source/components/events/evxfregn.c index 60d8e72c1..a305e3fc5 100644 --- a/source/components/events/evxfregn.c +++ b/source/components/events/evxfregn.c @@ -1,385 +1,385 @@ -/******************************************************************************
- *
- * Module Name: evxfregn - External Interfaces, ACPI Operation Regions and
- * Address Spaces.
- *
- *****************************************************************************/
-
-/******************************************************************************
- *
- * 1. Copyright Notice
- *
- * Some or all of this work - Copyright (c) 1999 - 2015, 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 EXPORT_ACPI_INTERFACES
-
-#include "acpi.h"
-#include "accommon.h"
-#include "acnamesp.h"
-#include "acevents.h"
-
-#define _COMPONENT ACPI_EVENTS
- ACPI_MODULE_NAME ("evxfregn")
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiInstallAddressSpaceHandler
- *
- * PARAMETERS: Device - Handle 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.
- *
- * NOTE: This function should only be called after AcpiEnableSubsystem has
- * been called. This is because any _REG methods associated with the Space ID
- * are executed here, and these methods can only be safely executed after
- * the default handlers have been installed and the hardware has been
- * initialized (via AcpiEnableSubsystem.)
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiInstallAddressSpaceHandler (
- ACPI_HANDLE Device,
- ACPI_ADR_SPACE_TYPE SpaceId,
- ACPI_ADR_SPACE_HANDLER Handler,
- ACPI_ADR_SPACE_SETUP Setup,
- void *Context)
-{
- ACPI_NAMESPACE_NODE *Node;
- ACPI_STATUS Status;
-
-
- ACPI_FUNCTION_TRACE (AcpiInstallAddressSpaceHandler);
-
-
- /* Parameter validation */
-
- if (!Device)
- {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
-
- Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (Status))
- {
- return_ACPI_STATUS (Status);
- }
-
- /* Convert and validate the device handle */
-
- Node = AcpiNsValidateHandle (Device);
- if (!Node)
- {
- Status = AE_BAD_PARAMETER;
- goto UnlockAndExit;
- }
-
- /* Install the handler for all Regions for this Space ID */
-
- Status = AcpiEvInstallSpaceHandler (Node, SpaceId, Handler, Setup, Context);
- if (ACPI_FAILURE (Status))
- {
- goto UnlockAndExit;
- }
-
- /*
- * For the default SpaceIDs, (the IDs for which there are default region handlers
- * installed) Only execute the _REG methods if the global initialization _REG
- * methods have already been run (via AcpiInitializeObjects). In other words,
- * we will defer the execution of the _REG methods for these SpaceIDs until
- * execution of AcpiInitializeObjects. This is done because we need the handlers
- * for the default spaces (mem/io/pci/table) to be installed before we can run
- * any control methods (or _REG methods). There is known BIOS code that depends
- * on this.
- *
- * For all other SpaceIDs, we can safely execute the _REG methods immediately.
- * This means that for IDs like EmbeddedController, this function should be called
- * only after AcpiEnableSubsystem has been called.
- */
- switch (SpaceId)
- {
- case ACPI_ADR_SPACE_SYSTEM_MEMORY:
- case ACPI_ADR_SPACE_SYSTEM_IO:
- case ACPI_ADR_SPACE_PCI_CONFIG:
- case ACPI_ADR_SPACE_DATA_TABLE:
-
- if (!AcpiGbl_RegMethodsExecuted)
- {
- /* We will defer execution of the _REG methods for this space */
- goto UnlockAndExit;
- }
- break;
-
- default:
-
- break;
- }
-
- /* Run all _REG methods for this address space */
-
- Status = AcpiEvExecuteRegMethods (Node, SpaceId);
-
-
-UnlockAndExit:
- (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (Status);
-}
-
-ACPI_EXPORT_SYMBOL (AcpiInstallAddressSpaceHandler)
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiRemoveAddressSpaceHandler
- *
- * PARAMETERS: Device - Handle for the device
- * SpaceId - The address space ID
- * Handler - Address of the handler
- *
- * RETURN: Status
- *
- * DESCRIPTION: Remove a previously installed handler.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiRemoveAddressSpaceHandler (
- ACPI_HANDLE Device,
- ACPI_ADR_SPACE_TYPE SpaceId,
- ACPI_ADR_SPACE_HANDLER Handler)
-{
- ACPI_OPERAND_OBJECT *ObjDesc;
- ACPI_OPERAND_OBJECT *HandlerObj;
- ACPI_OPERAND_OBJECT *RegionObj;
- ACPI_OPERAND_OBJECT **LastObjPtr;
- ACPI_NAMESPACE_NODE *Node;
- ACPI_STATUS Status;
-
-
- ACPI_FUNCTION_TRACE (AcpiRemoveAddressSpaceHandler);
-
-
- /* Parameter validation */
-
- if (!Device)
- {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
-
- Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (Status))
- {
- return_ACPI_STATUS (Status);
- }
-
- /* Convert and validate the device handle */
-
- Node = AcpiNsValidateHandle (Device);
- if (!Node ||
- ((Node->Type != ACPI_TYPE_DEVICE) &&
- (Node->Type != ACPI_TYPE_PROCESSOR) &&
- (Node->Type != ACPI_TYPE_THERMAL) &&
- (Node != AcpiGbl_RootNode)))
- {
- Status = AE_BAD_PARAMETER;
- goto UnlockAndExit;
- }
-
- /* Make sure the internal object exists */
-
- ObjDesc = AcpiNsGetAttachedObject (Node);
- if (!ObjDesc)
- {
- Status = AE_NOT_EXIST;
- goto UnlockAndExit;
- }
-
- /* Find the address handler the user requested */
-
- HandlerObj = ObjDesc->Device.Handler;
- LastObjPtr = &ObjDesc->Device.Handler;
- while (HandlerObj)
- {
- /* We have a handler, see if user requested this one */
-
- if (HandlerObj->AddressSpace.SpaceId == SpaceId)
- {
- /* Handler must be the same as the installed handler */
-
- if (HandlerObj->AddressSpace.Handler != Handler)
- {
- Status = AE_BAD_PARAMETER;
- goto UnlockAndExit;
- }
-
- /* Matched SpaceId, first dereference this in the Regions */
-
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Removing address handler %p(%p) for region %s "
- "on Device %p(%p)\n",
- HandlerObj, Handler, AcpiUtGetRegionName (SpaceId),
- Node, ObjDesc));
-
- RegionObj = HandlerObj->AddressSpace.RegionList;
-
- /* Walk the handler's region list */
-
- while (RegionObj)
- {
- /*
- * First disassociate the handler from the region.
- *
- * NOTE: this doesn't mean that the region goes away
- * The region is just inaccessible as indicated to
- * the _REG method
- */
- AcpiEvDetachRegion (RegionObj, TRUE);
-
- /*
- * Walk the list: Just grab the head because the
- * DetachRegion removed the previous head.
- */
- RegionObj = HandlerObj->AddressSpace.RegionList;
-
- }
-
- /* Remove this Handler object from the list */
-
- *LastObjPtr = HandlerObj->AddressSpace.Next;
-
- /* Now we can delete the handler object */
-
- AcpiUtRemoveReference (HandlerObj);
- goto UnlockAndExit;
- }
-
- /* Walk the linked list of handlers */
-
- LastObjPtr = &HandlerObj->AddressSpace.Next;
- HandlerObj = HandlerObj->AddressSpace.Next;
- }
-
- /* The handler does not exist */
-
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n",
- Handler, AcpiUtGetRegionName (SpaceId), SpaceId, Node, ObjDesc));
-
- Status = AE_NOT_EXIST;
-
-UnlockAndExit:
- (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (Status);
-}
-
-ACPI_EXPORT_SYMBOL (AcpiRemoveAddressSpaceHandler)
+/****************************************************************************** + * + * Module Name: evxfregn - External Interfaces, ACPI Operation Regions and + * Address Spaces. + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2014, 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 EXPORT_ACPI_INTERFACES + +#include "acpi.h" +#include "accommon.h" +#include "acnamesp.h" +#include "acevents.h" + +#define _COMPONENT ACPI_EVENTS + ACPI_MODULE_NAME ("evxfregn") + + +/******************************************************************************* + * + * FUNCTION: AcpiInstallAddressSpaceHandler + * + * PARAMETERS: Device - Handle 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. + * + * NOTE: This function should only be called after AcpiEnableSubsystem has + * been called. This is because any _REG methods associated with the Space ID + * are executed here, and these methods can only be safely executed after + * the default handlers have been installed and the hardware has been + * initialized (via AcpiEnableSubsystem.) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiInstallAddressSpaceHandler ( + ACPI_HANDLE Device, + ACPI_ADR_SPACE_TYPE SpaceId, + ACPI_ADR_SPACE_HANDLER Handler, + ACPI_ADR_SPACE_SETUP Setup, + void *Context) +{ + ACPI_NAMESPACE_NODE *Node; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiInstallAddressSpaceHandler); + + + /* Parameter validation */ + + if (!Device) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Convert and validate the device handle */ + + Node = AcpiNsValidateHandle (Device); + if (!Node) + { + Status = AE_BAD_PARAMETER; + goto UnlockAndExit; + } + + /* Install the handler for all Regions for this Space ID */ + + Status = AcpiEvInstallSpaceHandler (Node, SpaceId, Handler, Setup, Context); + if (ACPI_FAILURE (Status)) + { + goto UnlockAndExit; + } + + /* + * For the default SpaceIDs, (the IDs for which there are default region handlers + * installed) Only execute the _REG methods if the global initialization _REG + * methods have already been run (via AcpiInitializeObjects). In other words, + * we will defer the execution of the _REG methods for these SpaceIDs until + * execution of AcpiInitializeObjects. This is done because we need the handlers + * for the default spaces (mem/io/pci/table) to be installed before we can run + * any control methods (or _REG methods). There is known BIOS code that depends + * on this. + * + * For all other SpaceIDs, we can safely execute the _REG methods immediately. + * This means that for IDs like EmbeddedController, this function should be called + * only after AcpiEnableSubsystem has been called. + */ + switch (SpaceId) + { + case ACPI_ADR_SPACE_SYSTEM_MEMORY: + case ACPI_ADR_SPACE_SYSTEM_IO: + case ACPI_ADR_SPACE_PCI_CONFIG: + case ACPI_ADR_SPACE_DATA_TABLE: + + if (!AcpiGbl_RegMethodsExecuted) + { + /* We will defer execution of the _REG methods for this space */ + goto UnlockAndExit; + } + break; + + default: + + break; + } + + /* Run all _REG methods for this address space */ + + Status = AcpiEvExecuteRegMethods (Node, SpaceId); + + +UnlockAndExit: + (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiInstallAddressSpaceHandler) + + +/******************************************************************************* + * + * FUNCTION: AcpiRemoveAddressSpaceHandler + * + * PARAMETERS: Device - Handle for the device + * SpaceId - The address space ID + * Handler - Address of the handler + * + * RETURN: Status + * + * DESCRIPTION: Remove a previously installed handler. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiRemoveAddressSpaceHandler ( + ACPI_HANDLE Device, + ACPI_ADR_SPACE_TYPE SpaceId, + ACPI_ADR_SPACE_HANDLER Handler) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_OPERAND_OBJECT *HandlerObj; + ACPI_OPERAND_OBJECT *RegionObj; + ACPI_OPERAND_OBJECT **LastObjPtr; + ACPI_NAMESPACE_NODE *Node; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiRemoveAddressSpaceHandler); + + + /* Parameter validation */ + + if (!Device) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Convert and validate the device handle */ + + Node = AcpiNsValidateHandle (Device); + if (!Node || + ((Node->Type != ACPI_TYPE_DEVICE) && + (Node->Type != ACPI_TYPE_PROCESSOR) && + (Node->Type != ACPI_TYPE_THERMAL) && + (Node != AcpiGbl_RootNode))) + { + Status = AE_BAD_PARAMETER; + goto UnlockAndExit; + } + + /* Make sure the internal object exists */ + + ObjDesc = AcpiNsGetAttachedObject (Node); + if (!ObjDesc) + { + Status = AE_NOT_EXIST; + goto UnlockAndExit; + } + + /* Find the address handler the user requested */ + + HandlerObj = ObjDesc->Device.Handler; + LastObjPtr = &ObjDesc->Device.Handler; + while (HandlerObj) + { + /* We have a handler, see if user requested this one */ + + if (HandlerObj->AddressSpace.SpaceId == SpaceId) + { + /* Handler must be the same as the installed handler */ + + if (HandlerObj->AddressSpace.Handler != Handler) + { + Status = AE_BAD_PARAMETER; + goto UnlockAndExit; + } + + /* Matched SpaceId, first dereference this in the Regions */ + + ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, + "Removing address handler %p(%p) for region %s " + "on Device %p(%p)\n", + HandlerObj, Handler, AcpiUtGetRegionName (SpaceId), + Node, ObjDesc)); + + RegionObj = HandlerObj->AddressSpace.RegionList; + + /* Walk the handler's region list */ + + while (RegionObj) + { + /* + * First disassociate the handler from the region. + * + * NOTE: this doesn't mean that the region goes away + * The region is just inaccessible as indicated to + * the _REG method + */ + AcpiEvDetachRegion (RegionObj, TRUE); + + /* + * Walk the list: Just grab the head because the + * DetachRegion removed the previous head. + */ + RegionObj = HandlerObj->AddressSpace.RegionList; + + } + + /* Remove this Handler object from the list */ + + *LastObjPtr = HandlerObj->AddressSpace.Next; + + /* Now we can delete the handler object */ + + AcpiUtRemoveReference (HandlerObj); + goto UnlockAndExit; + } + + /* Walk the linked list of handlers */ + + LastObjPtr = &HandlerObj->AddressSpace.Next; + HandlerObj = HandlerObj->AddressSpace.Next; + } + + /* The handler does not exist */ + + ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, + "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n", + Handler, AcpiUtGetRegionName (SpaceId), SpaceId, Node, ObjDesc)); + + Status = AE_NOT_EXIST; + +UnlockAndExit: + (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiRemoveAddressSpaceHandler) |