1 /******************************************************************************
2 *
3 * Module Name: dsfield - Dispatcher field routines
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2023, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #include "acpi.h"
153 #include "accommon.h"
154 #include "amlcode.h"
155 #include "acdispat.h"
156 #include "acinterp.h"
157 #include "acnamesp.h"
158 #include "acparser.h"
159
160 #ifdef ACPI_EXEC_APP
161 #include "aecommon.h"
162 #endif
163
164
165 #define _COMPONENT ACPI_DISPATCHER
166 ACPI_MODULE_NAME ("dsfield")
167
168 /* Local prototypes */
169
170 #ifdef ACPI_ASL_COMPILER
171 #include "acdisasm.h"
172
173 static ACPI_STATUS
174 AcpiDsCreateExternalRegion (
175 ACPI_STATUS LookupStatus,
176 ACPI_PARSE_OBJECT *Op,
177 char *Path,
178 ACPI_WALK_STATE *WalkState,
179 ACPI_NAMESPACE_NODE **Node);
180 #endif
181
182 static ACPI_STATUS
183 AcpiDsGetFieldNames (
184 ACPI_CREATE_FIELD_INFO *Info,
185 ACPI_WALK_STATE *WalkState,
186 ACPI_PARSE_OBJECT *Arg);
187
188
189 #ifdef ACPI_ASL_COMPILER
190 /*******************************************************************************
191 *
192 * FUNCTION: AcpiDsCreateExternalRegion (iASL Disassembler only)
193 *
194 * PARAMETERS: LookupStatus - Status from NsLookup operation
195 * Op - Op containing the Field definition and args
196 * Path - Pathname of the region
197 * ` WalkState - Current method state
198 * Node - Where the new region node is returned
199 *
200 * RETURN: Status
201 *
202 * DESCRIPTION: Add region to the external list if NOT_FOUND. Create a new
203 * region node/object.
204 *
205 ******************************************************************************/
206
207 static ACPI_STATUS
AcpiDsCreateExternalRegion(ACPI_STATUS LookupStatus,ACPI_PARSE_OBJECT * Op,char * Path,ACPI_WALK_STATE * WalkState,ACPI_NAMESPACE_NODE ** Node)208 AcpiDsCreateExternalRegion (
209 ACPI_STATUS LookupStatus,
210 ACPI_PARSE_OBJECT *Op,
211 char *Path,
212 ACPI_WALK_STATE *WalkState,
213 ACPI_NAMESPACE_NODE **Node)
214 {
215 ACPI_STATUS Status;
216 ACPI_OPERAND_OBJECT *ObjDesc;
217
218
219 if (LookupStatus != AE_NOT_FOUND)
220 {
221 return (LookupStatus);
222 }
223
224 /*
225 * Table disassembly:
226 * OperationRegion not found. Generate an External for it, and
227 * insert the name into the namespace.
228 */
229 AcpiDmAddOpToExternalList (Op, Path, ACPI_TYPE_REGION, 0, 0);
230
231 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_REGION,
232 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, WalkState, Node);
233 if (ACPI_FAILURE (Status))
234 {
235 return (Status);
236 }
237
238 /* Must create and install a region object for the new node */
239
240 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
241 if (!ObjDesc)
242 {
243 return (AE_NO_MEMORY);
244 }
245
246 ObjDesc->Region.Node = *Node;
247 Status = AcpiNsAttachObject (*Node, ObjDesc, ACPI_TYPE_REGION);
248 return (Status);
249 }
250 #endif
251
252
253 /*******************************************************************************
254 *
255 * FUNCTION: AcpiDsCreateBufferField
256 *
257 * PARAMETERS: Op - Current parse op (CreateXXField)
258 * WalkState - Current state
259 *
260 * RETURN: Status
261 *
262 * DESCRIPTION: Execute the CreateField operators:
263 * CreateBitFieldOp,
264 * CreateByteFieldOp,
265 * CreateWordFieldOp,
266 * CreateDwordFieldOp,
267 * CreateQwordFieldOp,
268 * CreateFieldOp (all of which define a field in a buffer)
269 *
270 ******************************************************************************/
271
272 ACPI_STATUS
AcpiDsCreateBufferField(ACPI_PARSE_OBJECT * Op,ACPI_WALK_STATE * WalkState)273 AcpiDsCreateBufferField (
274 ACPI_PARSE_OBJECT *Op,
275 ACPI_WALK_STATE *WalkState)
276 {
277 ACPI_PARSE_OBJECT *Arg;
278 ACPI_NAMESPACE_NODE *Node;
279 ACPI_STATUS Status;
280 ACPI_OPERAND_OBJECT *ObjDesc;
281 ACPI_OPERAND_OBJECT *SecondDesc = NULL;
282 UINT32 Flags;
283
284
285 ACPI_FUNCTION_TRACE (DsCreateBufferField);
286
287
288 /*
289 * Get the NameString argument (name of the new BufferField)
290 */
291 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
292 {
293 /* For CreateField, name is the 4th argument */
294
295 Arg = AcpiPsGetArg (Op, 3);
296 }
297 else
298 {
299 /* For all other CreateXXXField operators, name is the 3rd argument */
300
301 Arg = AcpiPsGetArg (Op, 2);
302 }
303
304 if (!Arg)
305 {
306 return_ACPI_STATUS (AE_AML_NO_OPERAND);
307 }
308
309 if (WalkState->DeferredNode)
310 {
311 Node = WalkState->DeferredNode;
312 }
313 else
314 {
315 /* Execute flag should always be set when this function is entered */
316
317 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE))
318 {
319 ACPI_ERROR ((AE_INFO,
320 "Parse execute mode is not set"));
321 return_ACPI_STATUS (AE_AML_INTERNAL);
322 }
323
324 /* Creating new namespace node, should not already exist */
325
326 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
327 ACPI_NS_ERROR_IF_FOUND;
328
329 /*
330 * Mark node temporary if we are executing a normal control
331 * method. (Don't mark if this is a module-level code method)
332 */
333 if (WalkState->MethodNode &&
334 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
335 {
336 Flags |= ACPI_NS_TEMPORARY;
337 }
338
339 /* Enter the NameString into the namespace */
340
341 Status = AcpiNsLookup (WalkState->ScopeInfo,
342 Arg->Common.Value.String, ACPI_TYPE_ANY,
343 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node);
344 if ((WalkState->ParseFlags & ACPI_PARSE_DISASSEMBLE) &&
345 Status == AE_ALREADY_EXISTS)
346 {
347 Status = AE_OK;
348 }
349 else if (ACPI_FAILURE (Status))
350 {
351 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
352 Arg->Common.Value.String, Status);
353 return_ACPI_STATUS (Status);
354 }
355 }
356
357 /*
358 * We could put the returned object (Node) on the object stack for later,
359 * but for now, we will put it in the "op" object that the parser uses,
360 * so we can get it again at the end of this scope.
361 */
362 Op->Common.Node = Node;
363
364 /*
365 * If there is no object attached to the node, this node was just created
366 * and we need to create the field object. Otherwise, this was a lookup
367 * of an existing node and we don't want to create the field object again.
368 */
369 ObjDesc = AcpiNsGetAttachedObject (Node);
370 if (ObjDesc)
371 {
372 return_ACPI_STATUS (AE_OK);
373 }
374
375 /*
376 * The Field definition is not fully parsed at this time.
377 * (We must save the address of the AML for the buffer and index operands)
378 */
379
380 /* Create the buffer field object */
381
382 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER_FIELD);
383 if (!ObjDesc)
384 {
385 Status = AE_NO_MEMORY;
386 goto Cleanup;
387 }
388
389 /*
390 * Remember location in AML stream of the field unit opcode and operands
391 * -- since the buffer and index operands must be evaluated.
392 */
393 SecondDesc = ObjDesc->Common.NextObject;
394 SecondDesc->Extra.AmlStart = Op->Named.Data;
395 SecondDesc->Extra.AmlLength = Op->Named.Length;
396 ObjDesc->BufferField.Node = Node;
397
398 /* Attach constructed field descriptors to parent node */
399
400 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_BUFFER_FIELD);
401 if (ACPI_FAILURE (Status))
402 {
403 goto Cleanup;
404 }
405
406
407 Cleanup:
408
409 /* Remove local reference to the object */
410
411 AcpiUtRemoveReference (ObjDesc);
412 return_ACPI_STATUS (Status);
413 }
414
415
416 /*******************************************************************************
417 *
418 * FUNCTION: AcpiDsGetFieldNames
419 *
420 * PARAMETERS: Info - CreateField info structure
421 * WalkState - Current method state
422 * Arg - First parser arg for the field name list
423 *
424 * RETURN: Status
425 *
426 * DESCRIPTION: Process all named fields in a field declaration. Names are
427 * entered into the namespace.
428 *
429 ******************************************************************************/
430
431 static ACPI_STATUS
AcpiDsGetFieldNames(ACPI_CREATE_FIELD_INFO * Info,ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Arg)432 AcpiDsGetFieldNames (
433 ACPI_CREATE_FIELD_INFO *Info,
434 ACPI_WALK_STATE *WalkState,
435 ACPI_PARSE_OBJECT *Arg)
436 {
437 ACPI_STATUS Status;
438 UINT64 Position;
439 ACPI_PARSE_OBJECT *Child;
440
441 #ifdef ACPI_EXEC_APP
442 ACPI_OPERAND_OBJECT *ResultDesc;
443 ACPI_OPERAND_OBJECT *ObjDesc;
444 char *NamePath;
445 #endif
446
447
448 ACPI_FUNCTION_TRACE_PTR (DsGetFieldNames, Info);
449
450
451 /* First field starts at bit zero */
452
453 Info->FieldBitPosition = 0;
454
455 /* Process all elements in the field list (of parse nodes) */
456
457 while (Arg)
458 {
459 /*
460 * Four types of field elements are handled:
461 * 1) Name - Enters a new named field into the namespace
462 * 2) Offset - specifies a bit offset
463 * 3) AccessAs - changes the access mode/attributes
464 * 4) Connection - Associate a resource template with the field
465 */
466 switch (Arg->Common.AmlOpcode)
467 {
468 case AML_INT_RESERVEDFIELD_OP:
469
470 Position = (UINT64) Info->FieldBitPosition +
471 (UINT64) Arg->Common.Value.Size;
472
473 if (Position > ACPI_UINT32_MAX)
474 {
475 ACPI_ERROR ((AE_INFO,
476 "Bit offset within field too large (> 0xFFFFFFFF)"));
477 return_ACPI_STATUS (AE_SUPPORT);
478 }
479
480 Info->FieldBitPosition = (UINT32) Position;
481 break;
482
483 case AML_INT_ACCESSFIELD_OP:
484 case AML_INT_EXTACCESSFIELD_OP:
485 /*
486 * Get new AccessType, AccessAttribute, and AccessLength fields
487 * -- to be used for all field units that follow, until the
488 * end-of-field or another AccessAs keyword is encountered.
489 * NOTE. These three bytes are encoded in the integer value
490 * of the parseop for convenience.
491 *
492 * In FieldFlags, preserve the flag bits other than the
493 * ACCESS_TYPE bits.
494 */
495
496 /* AccessType (ByteAcc, WordAcc, etc.) */
497
498 Info->FieldFlags = (UINT8)
499 ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
500 ((UINT8) ((UINT32) (Arg->Common.Value.Integer & 0x07))));
501
502 /* AccessAttribute (AttribQuick, AttribByte, etc.) */
503
504 Info->Attribute = (UINT8)
505 ((Arg->Common.Value.Integer >> 8) & 0xFF);
506
507 /* AccessLength (for serial/buffer protocols) */
508
509 Info->AccessLength = (UINT8)
510 ((Arg->Common.Value.Integer >> 16) & 0xFF);
511 break;
512
513 case AML_INT_CONNECTION_OP:
514 /*
515 * Clear any previous connection. New connection is used for all
516 * fields that follow, similar to AccessAs
517 */
518 Info->ResourceBuffer = NULL;
519 Info->ConnectionNode = NULL;
520 Info->PinNumberIndex = 0;
521
522 /*
523 * A Connection() is either an actual resource descriptor (buffer)
524 * or a named reference to a resource template
525 */
526 Child = Arg->Common.Value.Arg;
527 if (Child->Common.AmlOpcode == AML_INT_BYTELIST_OP)
528 {
529 Info->ResourceBuffer = Child->Named.Data;
530 Info->ResourceLength = (UINT16) Child->Named.Value.Integer;
531 }
532 else
533 {
534 /* Lookup the Connection() namepath, it should already exist */
535
536 Status = AcpiNsLookup (WalkState->ScopeInfo,
537 Child->Common.Value.Name, ACPI_TYPE_ANY,
538 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
539 WalkState, &Info->ConnectionNode);
540 if (ACPI_FAILURE (Status))
541 {
542 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
543 Child->Common.Value.Name, Status);
544 return_ACPI_STATUS (Status);
545 }
546 }
547 break;
548
549 case AML_INT_NAMEDFIELD_OP:
550
551 /* Lookup the name, it should already exist */
552
553 Status = AcpiNsLookup (WalkState->ScopeInfo,
554 (char *) &Arg->Named.Name, Info->FieldType,
555 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
556 WalkState, &Info->FieldNode);
557 if (ACPI_FAILURE (Status))
558 {
559 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
560 (char *) &Arg->Named.Name, Status);
561 return_ACPI_STATUS (Status);
562 }
563 else
564 {
565 Arg->Common.Node = Info->FieldNode;
566 Info->FieldBitLength = Arg->Common.Value.Size;
567
568 /*
569 * If there is no object attached to the node, this node was
570 * just created and we need to create the field object.
571 * Otherwise, this was a lookup of an existing node and we
572 * don't want to create the field object again.
573 */
574 if (!AcpiNsGetAttachedObject (Info->FieldNode))
575 {
576 Status = AcpiExPrepFieldValue (Info);
577 if (ACPI_FAILURE (Status))
578 {
579 return_ACPI_STATUS (Status);
580 }
581 #ifdef ACPI_EXEC_APP
582 NamePath = AcpiNsGetExternalPathname (Info->FieldNode);
583 if (ACPI_SUCCESS (AeLookupInitFileEntry (NamePath, &ObjDesc)))
584 {
585 AcpiExWriteDataToField (ObjDesc,
586 AcpiNsGetAttachedObject (Info->FieldNode),
587 &ResultDesc);
588 AcpiUtRemoveReference (ObjDesc);
589 }
590 ACPI_FREE (NamePath);
591 #endif
592 }
593 }
594
595 /* Keep track of bit position for the next field */
596
597 Position = (UINT64) Info->FieldBitPosition +
598 (UINT64) Arg->Common.Value.Size;
599
600 if (Position > ACPI_UINT32_MAX)
601 {
602 ACPI_ERROR ((AE_INFO,
603 "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)",
604 ACPI_CAST_PTR (char, &Info->FieldNode->Name)));
605 return_ACPI_STATUS (AE_SUPPORT);
606 }
607
608 Info->FieldBitPosition += Info->FieldBitLength;
609 Info->PinNumberIndex++; /* Index relative to previous Connection() */
610 break;
611
612 default:
613
614 ACPI_ERROR ((AE_INFO,
615 "Invalid opcode in field list: 0x%X",
616 Arg->Common.AmlOpcode));
617 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
618 }
619
620 Arg = Arg->Common.Next;
621 }
622
623 return_ACPI_STATUS (AE_OK);
624 }
625
626
627 /*******************************************************************************
628 *
629 * FUNCTION: AcpiDsCreateField
630 *
631 * PARAMETERS: Op - Op containing the Field definition and args
632 * RegionNode - Object for the containing Operation Region
633 * ` WalkState - Current method state
634 *
635 * RETURN: Status
636 *
637 * DESCRIPTION: Create a new field in the specified operation region
638 *
639 ******************************************************************************/
640
641 ACPI_STATUS
AcpiDsCreateField(ACPI_PARSE_OBJECT * Op,ACPI_NAMESPACE_NODE * RegionNode,ACPI_WALK_STATE * WalkState)642 AcpiDsCreateField (
643 ACPI_PARSE_OBJECT *Op,
644 ACPI_NAMESPACE_NODE *RegionNode,
645 ACPI_WALK_STATE *WalkState)
646 {
647 ACPI_STATUS Status;
648 ACPI_PARSE_OBJECT *Arg;
649 ACPI_CREATE_FIELD_INFO Info;
650
651
652 ACPI_FUNCTION_TRACE_PTR (DsCreateField, Op);
653
654
655 /* First arg is the name of the parent OpRegion (must already exist) */
656
657 Arg = Op->Common.Value.Arg;
658
659 if (!RegionNode)
660 {
661 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name,
662 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE,
663 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode);
664 #ifdef ACPI_ASL_COMPILER
665 Status = AcpiDsCreateExternalRegion (Status, Arg,
666 Arg->Common.Value.Name, WalkState, &RegionNode);
667 #endif
668 if (ACPI_FAILURE (Status))
669 {
670 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
671 Arg->Common.Value.Name, Status);
672 return_ACPI_STATUS (Status);
673 }
674 }
675
676 memset (&Info, 0, sizeof (ACPI_CREATE_FIELD_INFO));
677
678 /* Second arg is the field flags */
679
680 Arg = Arg->Common.Next;
681 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
682 Info.Attribute = 0;
683
684 /* Each remaining arg is a Named Field */
685
686 Info.FieldType = ACPI_TYPE_LOCAL_REGION_FIELD;
687 Info.RegionNode = RegionNode;
688
689 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
690 if (ACPI_FAILURE (Status))
691 {
692 return_ACPI_STATUS (Status);
693 }
694
695 if (Info.RegionNode->Object->Region.SpaceId == ACPI_ADR_SPACE_PLATFORM_COMM)
696 {
697 RegionNode->Object->Field.InternalPccBuffer =
698 ACPI_ALLOCATE_ZEROED(Info.RegionNode->Object->Region.Length);
699 if (!RegionNode->Object->Field.InternalPccBuffer)
700 {
701 return_ACPI_STATUS (AE_NO_MEMORY);
702 }
703 }
704
705 return_ACPI_STATUS (Status);
706 }
707
708
709 /*******************************************************************************
710 *
711 * FUNCTION: AcpiDsInitFieldObjects
712 *
713 * PARAMETERS: Op - Op containing the Field definition and args
714 * ` WalkState - Current method state
715 *
716 * RETURN: Status
717 *
718 * DESCRIPTION: For each "Field Unit" name in the argument list that is
719 * part of the field declaration, enter the name into the
720 * namespace.
721 *
722 ******************************************************************************/
723
724 ACPI_STATUS
AcpiDsInitFieldObjects(ACPI_PARSE_OBJECT * Op,ACPI_WALK_STATE * WalkState)725 AcpiDsInitFieldObjects (
726 ACPI_PARSE_OBJECT *Op,
727 ACPI_WALK_STATE *WalkState)
728 {
729 ACPI_STATUS Status;
730 ACPI_PARSE_OBJECT *Arg = NULL;
731 ACPI_NAMESPACE_NODE *Node;
732 UINT8 Type = 0;
733 UINT32 Flags;
734
735
736 ACPI_FUNCTION_TRACE_PTR (DsInitFieldObjects, Op);
737
738
739 /* Execute flag should always be set when this function is entered */
740
741 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE))
742 {
743 if (WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP)
744 {
745 /* BankField Op is deferred, just return OK */
746
747 return_ACPI_STATUS (AE_OK);
748 }
749
750 ACPI_ERROR ((AE_INFO,
751 "Parse deferred mode is not set"));
752 return_ACPI_STATUS (AE_AML_INTERNAL);
753 }
754
755 /*
756 * Get the FieldList argument for this opcode. This is the start of the
757 * list of field elements.
758 */
759 switch (WalkState->Opcode)
760 {
761 case AML_FIELD_OP:
762
763 Arg = AcpiPsGetArg (Op, 2);
764 Type = ACPI_TYPE_LOCAL_REGION_FIELD;
765 break;
766
767 case AML_BANK_FIELD_OP:
768
769 Arg = AcpiPsGetArg (Op, 4);
770 Type = ACPI_TYPE_LOCAL_BANK_FIELD;
771 break;
772
773 case AML_INDEX_FIELD_OP:
774
775 Arg = AcpiPsGetArg (Op, 3);
776 Type = ACPI_TYPE_LOCAL_INDEX_FIELD;
777 break;
778
779 default:
780
781 return_ACPI_STATUS (AE_BAD_PARAMETER);
782 }
783
784 /* Creating new namespace node(s), should not already exist */
785
786 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
787 ACPI_NS_ERROR_IF_FOUND;
788
789 /*
790 * Mark node(s) temporary if we are executing a normal control
791 * method. (Don't mark if this is a module-level code method)
792 */
793 if (WalkState->MethodNode &&
794 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
795 {
796 Flags |= ACPI_NS_TEMPORARY;
797 }
798
799 #ifdef ACPI_EXEC_APP
800 Flags |= ACPI_NS_OVERRIDE_IF_FOUND;
801 #endif
802 /*
803 * Walk the list of entries in the FieldList
804 * Note: FieldList can be of zero length. In this case, Arg will be NULL.
805 */
806 while (Arg)
807 {
808 /*
809 * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested
810 * in the field names in order to enter them into the namespace.
811 */
812 if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
813 {
814 Status = AcpiNsLookup (WalkState->ScopeInfo,
815 (char *) &Arg->Named.Name, Type, ACPI_IMODE_LOAD_PASS1,
816 Flags, WalkState, &Node);
817 if (ACPI_FAILURE (Status))
818 {
819 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
820 (char *) &Arg->Named.Name, Status);
821 if (Status != AE_ALREADY_EXISTS)
822 {
823 return_ACPI_STATUS (Status);
824 }
825
826 /* Name already exists, just ignore this error */
827 }
828
829 Arg->Common.Node = Node;
830 }
831
832 /* Get the next field element in the list */
833
834 Arg = Arg->Common.Next;
835 }
836
837 return_ACPI_STATUS (AE_OK);
838 }
839
840
841 /*******************************************************************************
842 *
843 * FUNCTION: AcpiDsCreateBankField
844 *
845 * PARAMETERS: Op - Op containing the Field definition and args
846 * RegionNode - Object for the containing Operation Region
847 * WalkState - Current method state
848 *
849 * RETURN: Status
850 *
851 * DESCRIPTION: Create a new bank field in the specified operation region
852 *
853 ******************************************************************************/
854
855 ACPI_STATUS
AcpiDsCreateBankField(ACPI_PARSE_OBJECT * Op,ACPI_NAMESPACE_NODE * RegionNode,ACPI_WALK_STATE * WalkState)856 AcpiDsCreateBankField (
857 ACPI_PARSE_OBJECT *Op,
858 ACPI_NAMESPACE_NODE *RegionNode,
859 ACPI_WALK_STATE *WalkState)
860 {
861 ACPI_STATUS Status;
862 ACPI_PARSE_OBJECT *Arg;
863 ACPI_CREATE_FIELD_INFO Info;
864
865
866 ACPI_FUNCTION_TRACE_PTR (DsCreateBankField, Op);
867
868
869 /* First arg is the name of the parent OpRegion (must already exist) */
870
871 Arg = Op->Common.Value.Arg;
872 if (!RegionNode)
873 {
874 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name,
875 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE,
876 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode);
877 #ifdef ACPI_ASL_COMPILER
878 Status = AcpiDsCreateExternalRegion (Status, Arg,
879 Arg->Common.Value.Name, WalkState, &RegionNode);
880 #endif
881 if (ACPI_FAILURE (Status))
882 {
883 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
884 Arg->Common.Value.Name, Status);
885 return_ACPI_STATUS (Status);
886 }
887 }
888
889 /* Second arg is the Bank Register (Field) (must already exist) */
890
891 Arg = Arg->Common.Next;
892 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
893 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
894 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode);
895 if (ACPI_FAILURE (Status))
896 {
897 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
898 Arg->Common.Value.String, Status);
899 return_ACPI_STATUS (Status);
900 }
901
902 /*
903 * Third arg is the BankValue
904 * This arg is a TermArg, not a constant
905 * It will be evaluated later, by AcpiDsEvalBankFieldOperands
906 */
907 Arg = Arg->Common.Next;
908
909 /* Fourth arg is the field flags */
910
911 Arg = Arg->Common.Next;
912 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
913
914 /* Each remaining arg is a Named Field */
915
916 Info.FieldType = ACPI_TYPE_LOCAL_BANK_FIELD;
917 Info.RegionNode = RegionNode;
918
919 /*
920 * Use Info.DataRegisterNode to store BankField Op
921 * It's safe because DataRegisterNode will never be used when create
922 * bank field \we store AmlStart and AmlLength in the BankField Op for
923 * late evaluation. Used in AcpiExPrepFieldValue(Info)
924 *
925 * TBD: Or, should we add a field in ACPI_CREATE_FIELD_INFO, like
926 * "void *ParentOp"?
927 */
928 Info.DataRegisterNode = (ACPI_NAMESPACE_NODE*) Op;
929
930 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
931 return_ACPI_STATUS (Status);
932 }
933
934
935 /*******************************************************************************
936 *
937 * FUNCTION: AcpiDsCreateIndexField
938 *
939 * PARAMETERS: Op - Op containing the Field definition and args
940 * RegionNode - Object for the containing Operation Region
941 * ` WalkState - Current method state
942 *
943 * RETURN: Status
944 *
945 * DESCRIPTION: Create a new index field in the specified operation region
946 *
947 ******************************************************************************/
948
949 ACPI_STATUS
AcpiDsCreateIndexField(ACPI_PARSE_OBJECT * Op,ACPI_NAMESPACE_NODE * RegionNode,ACPI_WALK_STATE * WalkState)950 AcpiDsCreateIndexField (
951 ACPI_PARSE_OBJECT *Op,
952 ACPI_NAMESPACE_NODE *RegionNode,
953 ACPI_WALK_STATE *WalkState)
954 {
955 ACPI_STATUS Status;
956 ACPI_PARSE_OBJECT *Arg;
957 ACPI_CREATE_FIELD_INFO Info;
958
959
960 ACPI_FUNCTION_TRACE_PTR (DsCreateIndexField, Op);
961
962
963 /* First arg is the name of the Index register (must already exist) */
964
965 Arg = Op->Common.Value.Arg;
966 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
967 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
968 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode);
969 if (ACPI_FAILURE (Status))
970 {
971 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
972 Arg->Common.Value.String, Status);
973 return_ACPI_STATUS (Status);
974 }
975
976 /* Second arg is the data register (must already exist) */
977
978 Arg = Arg->Common.Next;
979 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
980 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
981 ACPI_NS_SEARCH_PARENT, WalkState, &Info.DataRegisterNode);
982 if (ACPI_FAILURE (Status))
983 {
984 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
985 Arg->Common.Value.String, Status);
986 return_ACPI_STATUS (Status);
987 }
988
989 /* Next arg is the field flags */
990
991 Arg = Arg->Common.Next;
992 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
993
994 /* Each remaining arg is a Named Field */
995
996 Info.FieldType = ACPI_TYPE_LOCAL_INDEX_FIELD;
997 Info.RegionNode = RegionNode;
998
999 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
1000 return_ACPI_STATUS (Status);
1001 }
1002
