diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/events/evregion.c')
-rw-r--r-- | sys/contrib/dev/acpica/components/events/evregion.c | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/events/evregion.c b/sys/contrib/dev/acpica/components/events/evregion.c new file mode 100644 index 0000000..43fe9b2 --- /dev/null +++ b/sys/contrib/dev/acpica/components/events/evregion.c @@ -0,0 +1,819 @@ +/****************************************************************************** + * + * Module Name: evregion - Operation Region support + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2013, 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 <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acevents.h> +#include <contrib/dev/acpica/include/acnamesp.h> +#include <contrib/dev/acpica/include/acinterp.h> + +#define _COMPONENT ACPI_EVENTS + ACPI_MODULE_NAME ("evregion") + + +extern UINT8 AcpiGbl_DefaultAddressSpaces[]; + +/* Local prototypes */ + +static void +AcpiEvOrphanEcRegMethod ( + ACPI_NAMESPACE_NODE *EcDeviceNode); + +static ACPI_STATUS +AcpiEvRegRun ( + ACPI_HANDLE ObjHandle, + UINT32 Level, + void *Context, + void **ReturnValue); + + +/******************************************************************************* + * + * 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: AcpiEvAddressSpaceDispatch + * + * PARAMETERS: RegionObj - Internal region object + * FieldObj - Corresponding field. Can be NULL. + * 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, + ACPI_OPERAND_OBJECT *FieldObj, + 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_CONNECTION_INFO *Context; + + + 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); + } + + Context = HandlerDesc->AddressSpace.Context; + + /* + * 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, + 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))); + + + /* + * Special handling for GenericSerialBus and GeneralPurposeIo: + * There are three extra parameters that must be passed to the + * handler via the context: + * 1) Connection buffer, a resource template from Connection() op. + * 2) Length of the above buffer. + * 3) Actual access length from the AccessAs() op. + */ + if (((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS) || + (RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) && + Context && + FieldObj) + { + /* Get the Connection (ResourceTemplate) buffer */ + + Context->Connection = FieldObj->Field.ResourceBuffer; + Context->Length = FieldObj->Field.ResourceLength; + Context->AccessLength = FieldObj->Field.AccessLength; + } + + 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, + 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: 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->RelativePathname = 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: 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 (Node); + } + + 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: EcDeviceNode - Namespace node for an EC device + * + * 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 EcDeviceNode used + * during EC handler installation. Otherwise, we would need to + * perform a time consuming namespace walk, executing _HID + * methods to find the EC device. + * + * MUTEX: Assumes the namespace is locked + * + ******************************************************************************/ + +static void +AcpiEvOrphanEcRegMethod ( + ACPI_NAMESPACE_NODE *EcDeviceNode) +{ + ACPI_HANDLE RegMethod; + ACPI_NAMESPACE_NODE *NextNode; + ACPI_STATUS Status; + ACPI_OBJECT_LIST Args; + ACPI_OBJECT Objects[2]; + + + ACPI_FUNCTION_TRACE (EvOrphanEcRegMethod); + + + if (!EcDeviceNode) + { + return_VOID; + } + + /* Namespace is currently locked, must release */ + + (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + + /* Get a handle to a _REG method immediately under the EC device */ + + Status = AcpiGetHandle (EcDeviceNode, METHOD_NAME__REG, &RegMethod); + if (ACPI_FAILURE (Status)) + { + goto Exit; /* There is no _REG method present */ + } + + /* + * 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 EmbeddedControl SpaceID 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 the _REG */ + } + + NextNode = AcpiNsGetNextNode (EcDeviceNode, NextNode); + } + + /* Evaluate the _REG(EmbeddedControl,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; +} |