/****************************************************************************** * * Module Name: evrgnini- ACPI AddressSpace (OpRegion) init * $Revision: 33 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __EVRGNINI_C__ #include "acpi.h" #include "acevents.h" #include "acnamesp.h" #include "acinterp.h" #include "amlcode.h" #define _COMPONENT EVENT_HANDLING MODULE_NAME ("evrgnini") /***************************************************************************** * * FUNCTION: AcpiEvSystemMemoryRegionSetup * * PARAMETERS: RegionObj - region we are interested in * Function - start or stop * HandlerContext - Address space handler context * RegionContext - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling, a nop for now * ****************************************************************************/ ACPI_STATUS AcpiEvSystemMemoryRegionSetup ( ACPI_HANDLE Handle, UINT32 Function, void *HandlerContext, void **RegionContext) { FUNCTION_TRACE ("EvSystemMemoryRegionSetup"); if (Function == ACPI_REGION_DEACTIVATE) { if (*RegionContext) { AcpiCmFree (*RegionContext); *RegionContext = NULL; } return_ACPI_STATUS (AE_OK); } /* Activate. Create a new context */ *RegionContext = AcpiCmCallocate (sizeof (MEM_HANDLER_CONTEXT)); if (!(*RegionContext)) { return_ACPI_STATUS (AE_NO_MEMORY); } return_ACPI_STATUS (AE_OK); } /***************************************************************************** * * FUNCTION: AcpiEvIoSpaceRegionSetup * * PARAMETERS: RegionObj - region we are interested in * Function - start or stop * HandlerContext - Address space handler context * RegionContext - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * ****************************************************************************/ ACPI_STATUS AcpiEvIoSpaceRegionSetup ( ACPI_HANDLE Handle, UINT32 Function, void *HandlerContext, void **RegionContext) { FUNCTION_TRACE ("EvIoSpaceRegionSetup"); if (Function == ACPI_REGION_DEACTIVATE) { *RegionContext = NULL; } else { *RegionContext = HandlerContext; } return_ACPI_STATUS (AE_OK); } /***************************************************************************** * * FUNCTION: AcpiEvPciConfigRegionSetup * * PARAMETERS: RegionObj - region we are interested in * Function - start or stop * HandlerContext - Address space handler context * RegionContext - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * * MUTEX: Assumes namespace is not locked * ****************************************************************************/ ACPI_STATUS AcpiEvPciConfigRegionSetup ( ACPI_HANDLE Handle, UINT32 Function, void *HandlerContext, void **RegionContext) { ACPI_STATUS Status = AE_OK; ACPI_INTEGER Temp; PCI_HANDLER_CONTEXT *PciContext = *RegionContext; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_NAMESPACE_NODE *Node; ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle; DEVICE_ID ObjectHID; FUNCTION_TRACE ("EvPciConfigRegionSetup"); HandlerObj = RegionObj->Region.AddrHandler; if (!HandlerObj) { /* * No installed handler. This shouldn't happen because the dispatch * routine checks before we get here, but we check again just in case. */ DEBUG_PRINT (TRACE_OPREGION, ("Attempting to init a region %X, with no handler\n", RegionObj)); return_ACPI_STATUS(AE_NOT_EXIST); } if (Function == ACPI_REGION_DEACTIVATE) { if (PciContext) { AcpiCmFree (PciContext); *RegionContext = NULL; } return_ACPI_STATUS (Status); } /* Create a new context */ PciContext = AcpiCmCallocate (sizeof(PCI_HANDLER_CONTEXT)); if (!PciContext) { return_ACPI_STATUS (AE_NO_MEMORY); } /* * For PCI Config space access, we have to pass the segment, bus, * device and function numbers. This routine must acquire those. */ /* * First get device and function numbers from the _ADR object * in the parent's scope. */ ACPI_ASSERT(RegionObj->Region.Node); Node = AcpiNsGetParentObject (RegionObj->Region.Node); /* AcpiEvaluate the _ADR object */ Status = AcpiCmEvaluateNumericObject (METHOD_NAME__ADR, Node, &Temp); /* * The default is zero, since the allocation above zeroed the data, just * do nothing on failures. */ if (ACPI_SUCCESS (Status)) { /* * Got it.. */ PciContext->DevFunc = (UINT32) Temp; } /* * Get the _SEG and _BBN values from the device upon which the handler * is installed. * * We need to get the _SEG and _BBN objects relative to the PCI BUS device. * This is the device the handler has been registered to handle. */ /* * If the AddrHandler.Node is still pointing to the root, we need * to scan upward for a PCI Root bridge and re-associate the OpRegion * handlers with that device. */ if (HandlerObj->AddrHandler.Node == AcpiGbl_RootNode) { /* * Node is currently the parent object */ while (Node != AcpiGbl_RootNode) { Status = AcpiCmExecute_HID(Node, &ObjectHID); if (ACPI_SUCCESS (Status)) { if (!(STRNCMP(ObjectHID.Buffer, PCI_ROOT_HID_STRING, sizeof (PCI_ROOT_HID_STRING)))) { AcpiInstallAddressSpaceHandler(Node, ADDRESS_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); break; } } Node = AcpiNsGetParentObject(Node); } } else { Node = HandlerObj->AddrHandler.Node; } Status = AcpiCmEvaluateNumericObject (METHOD_NAME__SEG, Node, &Temp); if (ACPI_SUCCESS (Status)) { /* * Got it.. */ PciContext->Seg = (UINT32) Temp; } Status = AcpiCmEvaluateNumericObject (METHOD_NAME__BBN, Node, &Temp); if (ACPI_SUCCESS (Status)) { /* * Got it.. */ PciContext->Bus = (UINT32) Temp; } *RegionContext = PciContext; return_ACPI_STATUS (AE_OK); } /***************************************************************************** * * FUNCTION: AcpiEvDefaultRegionSetup * * PARAMETERS: RegionObj - region we are interested in * Function - start or stop * HandlerContext - Address space handler context * RegionContext - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * ****************************************************************************/ ACPI_STATUS AcpiEvDefaultRegionSetup ( ACPI_HANDLE Handle, UINT32 Function, void *HandlerContext, void **RegionContext) { FUNCTION_TRACE ("EvDefaultRegionSetup"); if (Function == ACPI_REGION_DEACTIVATE) { *RegionContext = NULL; } else { *RegionContext = HandlerContext; } return_ACPI_STATUS (AE_OK); } /****************************************************************************** * * FUNCTION: AcpiEvInitializeRegion * * PARAMETERS: RegionObj - Region we are initializing * * RETURN: Status * * DESCRIPTION: Initializes the region, finds any _REG methods and saves them * for execution at a later time * * Get the appropriate address space handler for a newly * created region. * * This also performs address space specific intialization. For * example, PCI regions must have an _ADR object that contains * a PCI address in the scope of the defintion. This address is * required to perform an access to PCI config space. * ******************************************************************************/ ACPI_STATUS AcpiEvInitializeRegion ( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_ADDRESS_SPACE_TYPE SpaceId; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_NAMESPACE_NODE *MethodNode; ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG; FUNCTION_TRACE_U32 ("EvInitializeRegion", AcpiNsLocked); if (!RegionObj) { return_ACPI_STATUS (AE_BAD_PARAMETER); } ACPI_ASSERT(RegionObj->Region.Node); Node = AcpiNsGetParentObject (RegionObj->Region.Node); SpaceId = RegionObj->Region.SpaceId; RegionObj->Region.AddrHandler = NULL; RegionObj->Region.Extra->Extra.Method_REG = NULL; RegionObj->Region.Flags &= ~(AOPOBJ_INITIALIZED); /* * Find any "_REG" associated with this region definition */ Status = AcpiNsSearchNode (*RegNamePtr, Node, ACPI_TYPE_METHOD, &MethodNode); if (ACPI_SUCCESS (Status)) { /* * The _REG method is optional and there can be only one per region * definition. This will be executed when the handler is attached * or removed */ RegionObj->Region.Extra->Extra.Method_REG = MethodNode; } /* * The following loop depends upon the root Node having no parent * ie: AcpiGbl_RootNode->ParentEntry being set to NULL */ while (Node) { /* * Check to see if a handler exists */ HandlerObj = NULL; ObjDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) Node); if (ObjDesc) { /* * can only be a handler if the object exists */ switch (Node->Type) { case ACPI_TYPE_DEVICE: HandlerObj = ObjDesc->Device.AddrHandler; break; case ACPI_TYPE_PROCESSOR: HandlerObj = ObjDesc->Processor.AddrHandler; break; case ACPI_TYPE_THERMAL: HandlerObj = ObjDesc->ThermalZone.AddrHandler; break; } while (HandlerObj) { /* * This guy has at least one address handler * see if it has the type we want */ if (HandlerObj->AddrHandler.SpaceId == SpaceId) { DEBUG_PRINT (TRACE_OPREGION, ("Found handler %p for region %p in obj %p\n", HandlerObj, RegionObj, ObjDesc)); /* * Found it! Now update the region and the handler */ AcpiEvAssociateRegionAndHandler (HandlerObj, RegionObj, AcpiNsLocked); return_ACPI_STATUS (AE_OK); } HandlerObj = HandlerObj->AddrHandler.Next; } /* while handlerobj */ } /* * This one does not have the handler we need * Pop up one level */ Node = AcpiNsGetParentObject (Node); } /* while Node != ROOT */ /* * If we get here, there is no handler for this region */ DEBUG_PRINT (TRACE_OPREGION, ("No handler for RegionType %s(%X) (RegionObj %p)\n", AcpiCmGetRegionName (SpaceId), SpaceId, RegionObj)); return_ACPI_STATUS (AE_NOT_EXIST); }