--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: evxfregn - External Interfaces, ACPI Operation Regions and
+ * Address Spaces.
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2009, 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 __EVXFREGN_C__
+
+#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.
+ *
+ ******************************************************************************/
+
+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;
+ }
+
+ /* 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)
+
projects / l4.git / blobdiff