1 /******************************************************************************
3 * Module Name: excreate - Named object creation
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2004, 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
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
116 *****************************************************************************/
118 #define __EXCREATE_C__
121 #include "acinterp.h"
123 #include "acnamesp.h"
124 #include "acevents.h"
125 #include "actables.h"
128 #define _COMPONENT ACPI_EXECUTER
129 ACPI_MODULE_NAME ("excreate")
132 #ifndef ACPI_NO_METHOD_EXECUTION
133 /*****************************************************************************
135 * FUNCTION: AcpiExCreateAlias
137 * PARAMETERS: WalkState - Current state, contains operands
141 * DESCRIPTION: Create a new named alias
143 ****************************************************************************/
147 ACPI_WALK_STATE *WalkState)
149 ACPI_NAMESPACE_NODE *TargetNode;
150 ACPI_NAMESPACE_NODE *AliasNode;
151 ACPI_STATUS Status = AE_OK;
154 ACPI_FUNCTION_TRACE ("ExCreateAlias");
157 /* Get the source/alias operands (both namespace nodes) */
159 AliasNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
160 TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1];
162 if (TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS)
165 * Dereference an existing alias so that we don't create a chain
166 * of aliases. With this code, we guarantee that an alias is
167 * always exactly one level of indirection away from the
168 * actual aliased name.
170 TargetNode = (ACPI_NAMESPACE_NODE *) TargetNode->Object;
174 * For objects that can never change (i.e., the NS node will
175 * permanently point to the same object), we can simply attach
176 * the object to the new NS node. For other objects (such as
177 * Integers, buffers, etc.), we have to point the Alias node
178 * to the original Node.
180 switch (TargetNode->Type)
182 case ACPI_TYPE_INTEGER:
183 case ACPI_TYPE_STRING:
184 case ACPI_TYPE_BUFFER:
185 case ACPI_TYPE_PACKAGE:
186 case ACPI_TYPE_BUFFER_FIELD:
189 * The new alias has the type ALIAS and points to the original
190 * NS node, not the object itself. This is because for these
191 * types, the object can change dynamically via a Store.
193 AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS;
194 AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
199 /* Attach the original source object to the new Alias Node */
202 * The new alias assumes the type of the target, and it points
203 * to the same object. The reference count of the object has an
204 * additional reference to prevent deletion out from under either the
205 * target node or the alias Node
207 Status = AcpiNsAttachObject (AliasNode,
208 AcpiNsGetAttachedObject (TargetNode),
213 /* Since both operands are Nodes, we don't need to delete them */
215 return_ACPI_STATUS (Status);
219 /*****************************************************************************
221 * FUNCTION: AcpiExCreateEvent
223 * PARAMETERS: WalkState - Current state
227 * DESCRIPTION: Create a new event object
229 ****************************************************************************/
233 ACPI_WALK_STATE *WalkState)
236 ACPI_OPERAND_OBJECT *ObjDesc;
239 ACPI_FUNCTION_TRACE ("ExCreateEvent");
242 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT);
245 Status = AE_NO_MEMORY;
250 * Create the actual OS semaphore, with zero initial units -- meaning
251 * that the event is created in an unsignalled state
253 Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
254 &ObjDesc->Event.Semaphore);
255 if (ACPI_FAILURE (Status))
260 /* Attach object to the Node */
262 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0],
263 ObjDesc, ACPI_TYPE_EVENT);
267 * Remove local reference to the object (on error, will cause deletion
268 * of both object and semaphore if present.)
270 AcpiUtRemoveReference (ObjDesc);
271 return_ACPI_STATUS (Status);
275 /*****************************************************************************
277 * FUNCTION: AcpiExCreateMutex
279 * PARAMETERS: WalkState - Current state
283 * DESCRIPTION: Create a new mutex object
285 * Mutex (Name[0], SyncLevel[1])
287 ****************************************************************************/
291 ACPI_WALK_STATE *WalkState)
293 ACPI_STATUS Status = AE_OK;
294 ACPI_OPERAND_OBJECT *ObjDesc;
297 ACPI_FUNCTION_TRACE_PTR ("ExCreateMutex", ACPI_WALK_OPERANDS);
300 /* Create the new mutex object */
302 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX);
305 Status = AE_NO_MEMORY;
310 * Create the actual OS semaphore.
311 * One unit max to make it a mutex, with one initial unit to allow
312 * the mutex to be acquired.
314 Status = AcpiOsCreateSemaphore (1, 1, &ObjDesc->Mutex.Semaphore);
315 if (ACPI_FAILURE (Status))
320 /* Init object and attach to NS node */
322 ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value;
323 ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
325 Status = AcpiNsAttachObject (ObjDesc->Mutex.Node,
326 ObjDesc, ACPI_TYPE_MUTEX);
331 * Remove local reference to the object (on error, will cause deletion
332 * of both object and semaphore if present.)
334 AcpiUtRemoveReference (ObjDesc);
335 return_ACPI_STATUS (Status);
339 /*****************************************************************************
341 * FUNCTION: AcpiExCreateRegion
343 * PARAMETERS: AmlStart - Pointer to the region declaration AML
344 * AmlLength - Max length of the declaration AML
345 * Operands - List of operands for the opcode
346 * WalkState - Current state
350 * DESCRIPTION: Create a new operation region object
352 ****************************************************************************/
359 ACPI_WALK_STATE *WalkState)
362 ACPI_OPERAND_OBJECT *ObjDesc;
363 ACPI_NAMESPACE_NODE *Node;
364 ACPI_OPERAND_OBJECT *RegionObj2;
367 ACPI_FUNCTION_TRACE ("ExCreateRegion");
370 /* Get the Namespace Node */
372 Node = WalkState->Op->Common.Node;
375 * If the region object is already attached to this node,
378 if (AcpiNsGetAttachedObject (Node))
380 return_ACPI_STATUS (AE_OK);
384 * Space ID must be one of the predefined IDs, or in the user-defined
387 if ((RegionSpace >= ACPI_NUM_PREDEFINED_REGIONS) &&
388 (RegionSpace < ACPI_USER_REGION_BEGIN))
390 ACPI_REPORT_ERROR (("Invalid AddressSpace type %X\n", RegionSpace));
391 return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID);
394 ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (%X)\n",
395 AcpiUtGetRegionName (RegionSpace), RegionSpace));
397 /* Create the region descriptor */
399 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
402 Status = AE_NO_MEMORY;
407 * Remember location in AML stream of address & length
408 * operands since they need to be evaluated at run time.
410 RegionObj2 = ObjDesc->Common.NextObject;
411 RegionObj2->Extra.AmlStart = AmlStart;
412 RegionObj2->Extra.AmlLength = AmlLength;
414 /* Init the region from the operands */
416 ObjDesc->Region.SpaceId = RegionSpace;
417 ObjDesc->Region.Address = 0;
418 ObjDesc->Region.Length = 0;
419 ObjDesc->Region.Node = Node;
421 /* Install the new region object in the parent Node */
423 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION);
428 /* Remove local reference to the object */
430 AcpiUtRemoveReference (ObjDesc);
431 return_ACPI_STATUS (Status);
435 /*****************************************************************************
437 * FUNCTION: AcpiExCreateTableRegion
439 * PARAMETERS: WalkState - Current state
443 * DESCRIPTION: Create a new DataTableRegion object
445 ****************************************************************************/
448 AcpiExCreateTableRegion (
449 ACPI_WALK_STATE *WalkState)
452 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
453 ACPI_OPERAND_OBJECT *ObjDesc;
454 ACPI_NAMESPACE_NODE *Node;
455 ACPI_TABLE_HEADER *Table;
456 ACPI_OPERAND_OBJECT *RegionObj2;
459 ACPI_FUNCTION_TRACE ("ExCreateTableRegion");
462 /* Get the Node from the object stack */
464 Node = WalkState->Op->Common.Node;
467 * If the region object is already attached to this node,
470 if (AcpiNsGetAttachedObject (Node))
472 return_ACPI_STATUS (AE_OK);
475 /* Find the ACPI table */
477 Status = AcpiTbFindTable (Operand[1]->String.Pointer,
478 Operand[2]->String.Pointer,
479 Operand[3]->String.Pointer, &Table);
480 if (ACPI_FAILURE (Status))
482 return_ACPI_STATUS (Status);
485 /* Create the region descriptor */
487 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
490 return_ACPI_STATUS (AE_NO_MEMORY);
493 RegionObj2 = ObjDesc->Common.NextObject;
494 RegionObj2->Extra.RegionContext = NULL;
496 /* Init the region from the operands */
498 ObjDesc->Region.SpaceId = REGION_DATA_TABLE;
499 ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table);
500 ObjDesc->Region.Length = Table->Length;
501 ObjDesc->Region.Node = Node;
502 ObjDesc->Region.Flags = AOPOBJ_DATA_VALID;
504 /* Install the new region object in the parent Node */
506 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION);
507 if (ACPI_FAILURE (Status))
512 Status = AcpiEvInitializeRegion (ObjDesc, FALSE);
513 if (ACPI_FAILURE (Status))
515 if (Status == AE_NOT_EXIST)
525 ObjDesc->Region.Flags |= AOPOBJ_SETUP_COMPLETE;
530 /* Remove local reference to the object */
532 AcpiUtRemoveReference (ObjDesc);
533 return_ACPI_STATUS (Status);
537 /*****************************************************************************
539 * FUNCTION: AcpiExCreateProcessor
541 * PARAMETERS: WalkState - Current state
545 * DESCRIPTION: Create a new processor object and populate the fields
547 * Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3])
549 ****************************************************************************/
552 AcpiExCreateProcessor (
553 ACPI_WALK_STATE *WalkState)
555 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
556 ACPI_OPERAND_OBJECT *ObjDesc;
560 ACPI_FUNCTION_TRACE_PTR ("ExCreateProcessor", WalkState);
563 /* Create the processor object */
565 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR);
568 return_ACPI_STATUS (AE_NO_MEMORY);
572 * Initialize the processor object from the operands
574 ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value;
575 ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value;
576 ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value;
578 /* Install the processor object in the parent Node */
580 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
581 ObjDesc, ACPI_TYPE_PROCESSOR);
583 /* Remove local reference to the object */
585 AcpiUtRemoveReference (ObjDesc);
586 return_ACPI_STATUS (Status);
590 /*****************************************************************************
592 * FUNCTION: AcpiExCreatePowerResource
594 * PARAMETERS: WalkState - Current state
598 * DESCRIPTION: Create a new PowerResource object and populate the fields
600 * PowerResource (Name[0], SystemLevel[1], ResourceOrder[2])
602 ****************************************************************************/
605 AcpiExCreatePowerResource (
606 ACPI_WALK_STATE *WalkState)
608 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
610 ACPI_OPERAND_OBJECT *ObjDesc;
613 ACPI_FUNCTION_TRACE_PTR ("ExCreatePowerResource", WalkState);
616 /* Create the power resource object */
618 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER);
621 return_ACPI_STATUS (AE_NO_MEMORY);
624 /* Initialize the power object from the operands */
626 ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value;
627 ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value;
629 /* Install the power resource object in the parent Node */
631 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
632 ObjDesc, ACPI_TYPE_POWER);
634 /* Remove local reference to the object */
636 AcpiUtRemoveReference (ObjDesc);
637 return_ACPI_STATUS (Status);
642 /*****************************************************************************
644 * FUNCTION: AcpiExCreateMethod
646 * PARAMETERS: AmlStart - First byte of the method's AML
647 * AmlLength - AML byte count for this method
648 * WalkState - Current state
652 * DESCRIPTION: Create a new method object
654 ****************************************************************************/
660 ACPI_WALK_STATE *WalkState)
662 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
663 ACPI_OPERAND_OBJECT *ObjDesc;
668 ACPI_FUNCTION_TRACE_PTR ("ExCreateMethod", WalkState);
671 /* Create a new method object */
673 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
676 return_ACPI_STATUS (AE_NO_MEMORY);
679 /* Save the method's AML pointer and length */
681 ObjDesc->Method.AmlStart = AmlStart;
682 ObjDesc->Method.AmlLength = AmlLength;
684 /* disassemble the method flags */
686 MethodFlags = (UINT8) Operand[1]->Integer.Value;
688 ObjDesc->Method.MethodFlags = MethodFlags;
689 ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & METHOD_FLAGS_ARG_COUNT);
692 * Get the concurrency count. If required, a semaphore will be
693 * created for this method when it is parsed.
695 if (MethodFlags & METHOD_FLAGS_SERIALIZED)
698 * ACPI 1.0: Concurrency = 1
699 * ACPI 2.0: Concurrency = (SyncLevel (in method declaration) + 1)
701 ObjDesc->Method.Concurrency = (UINT8)
702 (((MethodFlags & METHOD_FLAGS_SYNCH_LEVEL) >> 4) + 1);
706 ObjDesc->Method.Concurrency = INFINITE_CONCURRENCY;
709 /* Attach the new object to the method Node */
711 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
712 ObjDesc, ACPI_TYPE_METHOD);
714 /* Remove local reference to the object */
716 AcpiUtRemoveReference (ObjDesc);
718 /* Remove a reference to the operand */
720 AcpiUtRemoveReference (Operand[1]);
721 return_ACPI_STATUS (Status);