1 /******************************************************************************
3 * Module Name: evrgnini- ACPI AddressSpace (OpRegion) init
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
118 #define __EVRGNINI_C__
120 #include <contrib/dev/acpica/acpi.h>
121 #include <contrib/dev/acpica/acevents.h>
122 #include <contrib/dev/acpica/acnamesp.h>
124 #define _COMPONENT ACPI_EVENTS
125 ACPI_MODULE_NAME ("evrgnini")
127 /* Local prototypes */
130 AcpiEvMatchPciRootBridge (
134 AcpiEvIsPciRootBridge (
135 ACPI_NAMESPACE_NODE *Node);
138 /*******************************************************************************
140 * FUNCTION: AcpiEvSystemMemoryRegionSetup
142 * PARAMETERS: Handle - Region we are interested in
143 * Function - Start or stop
144 * HandlerContext - Address space handler context
145 * RegionContext - Region specific context
149 * DESCRIPTION: Setup a SystemMemory operation region
151 ******************************************************************************/
154 AcpiEvSystemMemoryRegionSetup (
157 void *HandlerContext,
158 void **RegionContext)
160 ACPI_OPERAND_OBJECT *RegionDesc = (ACPI_OPERAND_OBJECT *) Handle;
161 ACPI_MEM_SPACE_CONTEXT *LocalRegionContext;
164 ACPI_FUNCTION_TRACE (EvSystemMemoryRegionSetup);
167 if (Function == ACPI_REGION_DEACTIVATE)
171 LocalRegionContext = (ACPI_MEM_SPACE_CONTEXT *) *RegionContext;
173 /* Delete a cached mapping if present */
175 if (LocalRegionContext->MappedLength)
177 AcpiOsUnmapMemory (LocalRegionContext->MappedLogicalAddress,
178 LocalRegionContext->MappedLength);
180 ACPI_FREE (LocalRegionContext);
181 *RegionContext = NULL;
183 return_ACPI_STATUS (AE_OK);
186 /* Create a new context */
188 LocalRegionContext = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_MEM_SPACE_CONTEXT));
189 if (!(LocalRegionContext))
191 return_ACPI_STATUS (AE_NO_MEMORY);
194 /* Save the region length and address for use in the handler */
196 LocalRegionContext->Length = RegionDesc->Region.Length;
197 LocalRegionContext->Address = RegionDesc->Region.Address;
199 *RegionContext = LocalRegionContext;
200 return_ACPI_STATUS (AE_OK);
204 /*******************************************************************************
206 * FUNCTION: AcpiEvIoSpaceRegionSetup
208 * PARAMETERS: Handle - Region we are interested in
209 * Function - Start or stop
210 * HandlerContext - Address space handler context
211 * RegionContext - Region specific context
215 * DESCRIPTION: Setup a IO operation region
217 ******************************************************************************/
220 AcpiEvIoSpaceRegionSetup (
223 void *HandlerContext,
224 void **RegionContext)
226 ACPI_FUNCTION_TRACE (EvIoSpaceRegionSetup);
229 if (Function == ACPI_REGION_DEACTIVATE)
231 *RegionContext = NULL;
235 *RegionContext = HandlerContext;
238 return_ACPI_STATUS (AE_OK);
242 /*******************************************************************************
244 * FUNCTION: AcpiEvPciConfigRegionSetup
246 * PARAMETERS: Handle - Region we are interested in
247 * Function - Start or stop
248 * HandlerContext - Address space handler context
249 * RegionContext - Region specific context
253 * DESCRIPTION: Setup a PCI_Config operation region
255 * MUTEX: Assumes namespace is not locked
257 ******************************************************************************/
260 AcpiEvPciConfigRegionSetup (
263 void *HandlerContext,
264 void **RegionContext)
266 ACPI_STATUS Status = AE_OK;
267 ACPI_INTEGER PciValue;
268 ACPI_PCI_ID *PciId = *RegionContext;
269 ACPI_OPERAND_OBJECT *HandlerObj;
270 ACPI_NAMESPACE_NODE *ParentNode;
271 ACPI_NAMESPACE_NODE *PciRootNode;
272 ACPI_NAMESPACE_NODE *PciDeviceNode;
273 ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle;
276 ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);
279 HandlerObj = RegionObj->Region.Handler;
283 * No installed handler. This shouldn't happen because the dispatch
284 * routine checks before we get here, but we check again just in case.
286 ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
287 "Attempting to init a region %p, with no handler\n", RegionObj));
288 return_ACPI_STATUS (AE_NOT_EXIST);
291 *RegionContext = NULL;
292 if (Function == ACPI_REGION_DEACTIVATE)
298 return_ACPI_STATUS (Status);
301 ParentNode = AcpiNsGetParentNode (RegionObj->Region.Node);
304 * Get the _SEG and _BBN values from the device upon which the handler
307 * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
308 * This is the device the handler has been registered to handle.
312 * If the AddressSpace.Node is still pointing to the root, we need
313 * to scan upward for a PCI Root bridge and re-associate the OpRegion
314 * handlers with that device.
316 if (HandlerObj->AddressSpace.Node == AcpiGbl_RootNode)
318 /* Start search from the parent object */
320 PciRootNode = ParentNode;
321 while (PciRootNode != AcpiGbl_RootNode)
323 /* Get the _HID/_CID in order to detect a RootBridge */
325 if (AcpiEvIsPciRootBridge (PciRootNode))
327 /* Install a handler for this PCI root bridge */
329 Status = AcpiInstallAddressSpaceHandler (
330 (ACPI_HANDLE) PciRootNode,
331 ACPI_ADR_SPACE_PCI_CONFIG,
332 ACPI_DEFAULT_HANDLER, NULL, NULL);
333 if (ACPI_FAILURE (Status))
335 if (Status == AE_SAME_HANDLER)
338 * It is OK if the handler is already installed on the root
339 * bridge. Still need to return a context object for the
340 * new PCI_Config operation region, however.
346 ACPI_EXCEPTION ((AE_INFO, Status,
347 "Could not install PciConfig handler for Root Bridge %4.4s",
348 AcpiUtGetNodeName (PciRootNode)));
354 PciRootNode = AcpiNsGetParentNode (PciRootNode);
357 /* PCI root bridge not found, use namespace root node */
361 PciRootNode = HandlerObj->AddressSpace.Node;
365 * If this region is now initialized, we are done.
366 * (InstallAddressSpaceHandler could have initialized it)
368 if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
370 return_ACPI_STATUS (AE_OK);
373 /* Region is still not initialized. Create a new context */
375 PciId = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PCI_ID));
378 return_ACPI_STATUS (AE_NO_MEMORY);
382 * For PCI_Config space access, we need the segment, bus,
383 * device and function numbers. Acquire them here.
385 * Find the parent device object. (This allows the operation region to be
386 * within a subscope under the device, such as a control method.)
388 PciDeviceNode = RegionObj->Region.Node;
389 while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
391 PciDeviceNode = AcpiNsGetParentNode (PciDeviceNode);
396 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
400 * Get the PCI device and function numbers from the _ADR object
401 * contained in the parent's scope.
403 Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, PciDeviceNode, &PciValue);
406 * The default is zero, and since the allocation above zeroed
407 * the data, just do nothing on failure.
409 if (ACPI_SUCCESS (Status))
411 PciId->Device = ACPI_HIWORD (ACPI_LODWORD (PciValue));
412 PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
415 /* The PCI segment number comes from the _SEG method */
417 Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG, PciRootNode, &PciValue);
418 if (ACPI_SUCCESS (Status))
420 PciId->Segment = ACPI_LOWORD (PciValue);
423 /* The PCI bus number comes from the _BBN method */
425 Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN, PciRootNode, &PciValue);
426 if (ACPI_SUCCESS (Status))
428 PciId->Bus = ACPI_LOWORD (PciValue);
431 /* Complete this device's PciId */
433 AcpiOsDerivePciId (PciRootNode, RegionObj->Region.Node, &PciId);
435 *RegionContext = PciId;
436 return_ACPI_STATUS (AE_OK);
440 /*******************************************************************************
442 * FUNCTION: AcpiEvMatchPciRootBridge
444 * PARAMETERS: Id - The HID/CID in string format
446 * RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
448 * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
450 ******************************************************************************/
453 AcpiEvMatchPciRootBridge (
458 * Check if this is a PCI root.
459 * ACPI 3.0+: check for a PCI Express root also.
461 if (!(ACPI_STRNCMP (Id,
463 sizeof (PCI_ROOT_HID_STRING))) ||
466 PCI_EXPRESS_ROOT_HID_STRING,
467 sizeof (PCI_EXPRESS_ROOT_HID_STRING))))
476 /*******************************************************************************
478 * FUNCTION: AcpiEvIsPciRootBridge
480 * PARAMETERS: Node - Device node being examined
482 * RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
484 * DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
485 * examining the _HID and _CID for the device.
487 ******************************************************************************/
490 AcpiEvIsPciRootBridge (
491 ACPI_NAMESPACE_NODE *Node)
495 ACPI_COMPATIBLE_ID_LIST *Cid;
500 * Get the _HID and check for a PCI Root Bridge
502 Status = AcpiUtExecute_HID (Node, &Hid);
503 if (ACPI_FAILURE (Status))
508 if (AcpiEvMatchPciRootBridge (Hid.Value))
514 * The _HID did not match.
515 * Get the _CID and check for a PCI Root Bridge
517 Status = AcpiUtExecute_CID (Node, &Cid);
518 if (ACPI_FAILURE (Status))
523 /* Check all _CIDs in the returned list */
525 for (i = 0; i < Cid->Count; i++)
527 if (AcpiEvMatchPciRootBridge (Cid->Id[i].Value))
539 /*******************************************************************************
541 * FUNCTION: AcpiEvPciBarRegionSetup
543 * PARAMETERS: Handle - Region we are interested in
544 * Function - Start or stop
545 * HandlerContext - Address space handler context
546 * RegionContext - Region specific context
550 * DESCRIPTION: Setup a PciBAR operation region
552 * MUTEX: Assumes namespace is not locked
554 ******************************************************************************/
557 AcpiEvPciBarRegionSetup (
560 void *HandlerContext,
561 void **RegionContext)
563 ACPI_FUNCTION_TRACE (EvPciBarRegionSetup);
566 return_ACPI_STATUS (AE_OK);
570 /*******************************************************************************
572 * FUNCTION: AcpiEvCmosRegionSetup
574 * PARAMETERS: Handle - Region we are interested in
575 * Function - Start or stop
576 * HandlerContext - Address space handler context
577 * RegionContext - Region specific context
581 * DESCRIPTION: Setup a CMOS operation region
583 * MUTEX: Assumes namespace is not locked
585 ******************************************************************************/
588 AcpiEvCmosRegionSetup (
591 void *HandlerContext,
592 void **RegionContext)
594 ACPI_FUNCTION_TRACE (EvCmosRegionSetup);
597 return_ACPI_STATUS (AE_OK);
601 /*******************************************************************************
603 * FUNCTION: AcpiEvDefaultRegionSetup
605 * PARAMETERS: Handle - Region we are interested in
606 * Function - Start or stop
607 * HandlerContext - Address space handler context
608 * RegionContext - Region specific context
612 * DESCRIPTION: Default region initialization
614 ******************************************************************************/
617 AcpiEvDefaultRegionSetup (
620 void *HandlerContext,
621 void **RegionContext)
623 ACPI_FUNCTION_TRACE (EvDefaultRegionSetup);
626 if (Function == ACPI_REGION_DEACTIVATE)
628 *RegionContext = NULL;
632 *RegionContext = HandlerContext;
635 return_ACPI_STATUS (AE_OK);
639 /*******************************************************************************
641 * FUNCTION: AcpiEvInitializeRegion
643 * PARAMETERS: RegionObj - Region we are initializing
644 * AcpiNsLocked - Is namespace locked?
648 * DESCRIPTION: Initializes the region, finds any _REG methods and saves them
649 * for execution at a later time
651 * Get the appropriate address space handler for a newly
654 * This also performs address space specific initialization. For
655 * example, PCI regions must have an _ADR object that contains
656 * a PCI address in the scope of the definition. This address is
657 * required to perform an access to PCI config space.
659 * MUTEX: Interpreter should be unlocked, because we may run the _REG
660 * method for this region.
662 ******************************************************************************/
665 AcpiEvInitializeRegion (
666 ACPI_OPERAND_OBJECT *RegionObj,
667 BOOLEAN AcpiNsLocked)
669 ACPI_OPERAND_OBJECT *HandlerObj;
670 ACPI_OPERAND_OBJECT *ObjDesc;
671 ACPI_ADR_SPACE_TYPE SpaceId;
672 ACPI_NAMESPACE_NODE *Node;
674 ACPI_NAMESPACE_NODE *MethodNode;
675 ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG;
676 ACPI_OPERAND_OBJECT *RegionObj2;
679 ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked);
684 return_ACPI_STATUS (AE_BAD_PARAMETER);
687 if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED)
689 return_ACPI_STATUS (AE_OK);
692 RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
695 return_ACPI_STATUS (AE_NOT_EXIST);
698 Node = AcpiNsGetParentNode (RegionObj->Region.Node);
699 SpaceId = RegionObj->Region.SpaceId;
703 RegionObj->Region.Handler = NULL;
704 RegionObj2->Extra.Method_REG = NULL;
705 RegionObj->Common.Flags &= ~(AOPOBJ_SETUP_COMPLETE);
706 RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED;
708 /* Find any "_REG" method associated with this region definition */
710 Status = AcpiNsSearchOneScope (
711 *RegNamePtr, Node, ACPI_TYPE_METHOD, &MethodNode);
712 if (ACPI_SUCCESS (Status))
715 * The _REG method is optional and there can be only one per region
716 * definition. This will be executed when the handler is attached
719 RegionObj2->Extra.Method_REG = MethodNode;
723 * The following loop depends upon the root Node having no parent
724 * ie: AcpiGbl_RootNode->ParentEntry being set to NULL
728 /* Check to see if a handler exists */
731 ObjDesc = AcpiNsGetAttachedObject (Node);
734 /* Can only be a handler if the object exists */
738 case ACPI_TYPE_DEVICE:
740 HandlerObj = ObjDesc->Device.Handler;
743 case ACPI_TYPE_PROCESSOR:
745 HandlerObj = ObjDesc->Processor.Handler;
748 case ACPI_TYPE_THERMAL:
750 HandlerObj = ObjDesc->ThermalZone.Handler;
754 /* Ignore other objects */
760 /* Is this handler of the correct type? */
762 if (HandlerObj->AddressSpace.SpaceId == SpaceId)
764 /* Found correct handler */
766 ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
767 "Found handler %p for region %p in obj %p\n",
768 HandlerObj, RegionObj, ObjDesc));
770 Status = AcpiEvAttachRegion (HandlerObj, RegionObj,
774 * Tell all users that this region is usable by running the _REG
779 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
780 if (ACPI_FAILURE (Status))
782 return_ACPI_STATUS (Status);
786 Status = AcpiEvExecuteRegMethod (RegionObj, 1);
790 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
791 if (ACPI_FAILURE (Status))
793 return_ACPI_STATUS (Status);
797 return_ACPI_STATUS (AE_OK);
800 /* Try next handler in the list */
802 HandlerObj = HandlerObj->AddressSpace.Next;
807 * This node does not have the handler we need;
810 Node = AcpiNsGetParentNode (Node);
813 /* If we get here, there is no handler for this region */
815 ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
816 "No handler for RegionType %s(%X) (RegionObj %p)\n",
817 AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj));
819 return_ACPI_STATUS (AE_NOT_EXIST);