/******************************************************************************
*
- * Module Name: evregion - ACPI AddressSpace (OpRegion) handler dispatch
+ * Module Name: evregion - Operation Region support
*
*****************************************************************************/
*
* 1. Copyright Notice
*
- * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
+ * 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
+ * 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.
*
* 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
+ * 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
* 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,
+ * 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
+ * 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.
*
* 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
+ * 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
* 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
+ * 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.
*
* 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
+ * 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
+ * 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
ACPI_MODULE_NAME ("evregion")
-/* Local prototypes */
+extern UINT8 AcpiGbl_DefaultAddressSpaces[];
-static BOOLEAN
-AcpiEvHasDefaultHandler (
- ACPI_NAMESPACE_NODE *Node,
- ACPI_ADR_SPACE_TYPE SpaceId);
+/* Local prototypes */
static void
AcpiEvOrphanEcRegMethod (
- void);
+ ACPI_NAMESPACE_NODE *EcDeviceNode);
static ACPI_STATUS
AcpiEvRegRun (
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: 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
+ * 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)
ACPI_STATUS
AcpiEvAddressSpaceDispatch (
ACPI_OPERAND_OBJECT *RegionObj,
+ ACPI_OPERAND_OBJECT *FieldObj,
UINT32 Function,
UINT32 RegionOffset,
UINT32 BitWidth,
ACPI_OPERAND_OBJECT *HandlerDesc;
ACPI_OPERAND_OBJECT *RegionObj2;
void *RegionContext = NULL;
+ ACPI_CONNECTION_INFO *Context;
ACPI_FUNCTION_TRACE (EvAddressSpaceDispatch);
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
AcpiExExitInterpreter ();
Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE,
- HandlerDesc->AddressSpace.Context, &RegionContext);
+ Context, &RegionContext);
/* Re-enter the interpreter */
{
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
+ * the handler for this particular region
+ */
+ if (!(RegionObj2->Extra.RegionContext))
{
- /*
- * Save the returned context for use in all accesses to
- * this particular region
- */
RegionObj2->Extra.RegionContext = RegionContext;
}
}
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))
{
Status = Handler (Function,
(RegionObj->Region.Address + RegionOffset), BitWidth, Value,
- HandlerDesc->AddressSpace.Context, RegionObj2->Extra.RegionContext);
+ Context, RegionObj2->Extra.RegionContext);
if (ACPI_FAILURE (Status))
{
{
ACPI_OPERAND_OBJECT *HandlerObj;
ACPI_OPERAND_OBJECT *ObjDesc;
+ ACPI_OPERAND_OBJECT *StartDesc;
ACPI_OPERAND_OBJECT **LastObjPtr;
ACPI_ADR_SPACE_SETUP RegionSetup;
void **RegionContext;
/* Find this region in the handler's list */
ObjDesc = HandlerObj->AddressSpace.RegionList;
+ StartDesc = ObjDesc;
LastObjPtr = &HandlerObj->AddressSpace.RegionList;
while (ObjDesc)
Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE,
HandlerObj->AddressSpace.Context, RegionContext);
+ /*
+ * RegionContext should have been released by the deactivate
+ * operation. We don't need access to it anymore here.
+ */
+ if (RegionContext)
+ {
+ *RegionContext = NULL;
+ }
+
/* Init routine may fail, Just ignore errors */
if (ACPI_FAILURE (Status))
LastObjPtr = &ObjDesc->Region.Next;
ObjDesc = ObjDesc->Region.Next;
+
+ /* Prevent infinite loop if list is corrupted */
+
+ if (ObjDesc == StartDesc)
+ {
+ ACPI_ERROR ((AE_INFO,
+ "Circular handler list in region object %p",
+ RegionObj));
+ return_VOID;
+ }
}
/* If we get here, the region was not in the handler's region list */
/*******************************************************************************
*
- * 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
+ * FUNCTION: AcpiEvExecuteRegMethod
*
- * 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
+ * PARAMETERS: RegionObj - Region object
+ * Function - Passed to _REG: On (1) or Off (0)
*
* RETURN: Status
*
- * DESCRIPTION: Install a handler for all OpRegions of a given SpaceId.
- * Assumes namespace is locked
+ * DESCRIPTION: Execute _REG method for a region
*
******************************************************************************/
ACPI_STATUS
-AcpiEvInstallSpaceHandler (
- ACPI_NAMESPACE_NODE *Node,
- ACPI_ADR_SPACE_TYPE SpaceId,
- ACPI_ADR_SPACE_HANDLER Handler,
- ACPI_ADR_SPACE_SETUP Setup,
- void *Context)
+AcpiEvExecuteRegMethod (
+ ACPI_OPERAND_OBJECT *RegionObj,
+ UINT32 Function)
{
- ACPI_OPERAND_OBJECT *ObjDesc;
- ACPI_OPERAND_OBJECT *HandlerObj;
+ ACPI_EVALUATE_INFO *Info;
+ ACPI_OPERAND_OBJECT *Args[3];
+ ACPI_OPERAND_OBJECT *RegionObj2;
ACPI_STATUS Status;
- ACPI_OBJECT_TYPE Type;
- UINT8 Flags = 0;
- ACPI_FUNCTION_TRACE (EvInstallSpaceHandler);
+ ACPI_FUNCTION_TRACE (EvExecuteRegMethod);
- /*
- * 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)
+ RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
+ if (!RegionObj2)
{
- 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;
- }
+ return_ACPI_STATUS (AE_NOT_EXIST);
}
- /* If the caller hasn't specified a setup routine, use the default */
-
- if (!Setup)
+ if (RegionObj2->Extra.Method_REG == NULL)
{
- Setup = AcpiEvDefaultRegionSetup;
+ return_ACPI_STATUS (AE_OK);
}
- /* 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 */
+ /* Allocate and initialize the evaluation information block */
- HandlerObj = HandlerObj->AddressSpace.Next;
- }
- }
- else
+ Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
+ if (!Info)
{
- 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;
- }
+ return_ACPI_STATUS (AE_NO_MEMORY);
}
- 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));
+ Info->PrefixNode = RegionObj2->Extra.Method_REG;
+ Info->RelativePathname = NULL;
+ Info->Parameters = Args;
+ Info->Flags = ACPI_IGNORE_RETURN_VALUE;
/*
- * Install the handler
+ * The _REG method has two arguments:
*
- * At this point there is no existing handler. Just allocate the object
- * for the handler and link it into the list.
+ * 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)
*/
- HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
- if (!HandlerObj)
+ Args[0] = AcpiUtCreateIntegerObject ((UINT64) RegionObj->Region.SpaceId);
+ if (!Args[0])
{
Status = AE_NO_MEMORY;
- goto UnlockAndExit;
+ goto Cleanup1;
}
- /* Init handler obj */
+ Args[1] = AcpiUtCreateIntegerObject ((UINT64) Function);
+ if (!Args[1])
+ {
+ Status = AE_NO_MEMORY;
+ goto Cleanup2;
+ }
- 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;
+ Args[2] = NULL; /* Terminate list */
- /* Install at head of Device.AddressSpace list */
+ /* Execute the method, no return value */
- HandlerObj->AddressSpace.Next = ObjDesc->Device.Handler;
+ ACPI_DEBUG_EXEC (
+ AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Info->PrefixNode, NULL));
- /*
- * The Device object is the first reference on the HandlerObj.
- * Each region that uses the handler adds a reference.
- */
- ObjDesc->Device.Handler = HandlerObj;
+ Status = AcpiNsEvaluate (Info);
+ AcpiUtRemoveReference (Args[1]);
- /*
- * 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);
+Cleanup2:
+ AcpiUtRemoveReference (Args[0]);
-UnlockAndExit:
+Cleanup1:
+ ACPI_FREE (Info);
return_ACPI_STATUS (Status);
}
if (SpaceId == ACPI_ADR_SPACE_EC)
{
- AcpiEvOrphanEcRegMethod ();
+ AcpiEvOrphanEcRegMethod (Node);
}
return_ACPI_STATUS (Status);
*
* FUNCTION: AcpiEvOrphanEcRegMethod
*
- * PARAMETERS: None
+ * PARAMETERS: EcDeviceNode - Namespace node for an EC device
*
* RETURN: None
*
* 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.
+ * 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 (
- void)
+ ACPI_NAMESPACE_NODE *EcDeviceNode)
{
- ACPI_TABLE_ECDT *Table;
+ ACPI_HANDLE RegMethod;
+ ACPI_NAMESPACE_NODE *NextNode;
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))
+ if (!EcDeviceNode)
{
return_VOID;
}
(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));
+ Status = AcpiGetHandle (EcDeviceNode, METHOD_NAME__REG, &RegMethod);
if (ACPI_FAILURE (Status))
{
- goto Exit;
+ goto Exit; /* There is no _REG method present */
}
/*
* 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.
+ * execute the _REG method with the EmbeddedControl SpaceID argument.
*/
NextNode = AcpiNsGetNextNode (EcDeviceNode, NULL);
while (NextNode)
(NextNode->Object) &&
(NextNode->Object->Region.SpaceId == ACPI_ADR_SPACE_EC))
{
- goto Exit; /* Do not execute _REG */
+ goto Exit; /* Do not execute the _REG */
}
+
NextNode = AcpiNsGetNextNode (EcDeviceNode, NextNode);
}
- /* Evaluate the _REG(EC,Connect) method */
+ /* Evaluate the _REG(EmbeddedControl,Connect) method */
Args.Count = 2;
Args.Pointer = Objects;
projects / reactos.git / blobdiff