13 * All rights reserved.
14 *
15 * 2. License
16 *
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
20 * property rights.
21 *
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
28 *
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;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
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.
54 *
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
65 * make.
66 *
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
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
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.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
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
89 * PARTICULAR PURPOSE.
90 *
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
98 * LIMITED REMEDY.
99 *
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.
114 *
115 *****************************************************************************/
116
117#define __ASLLOAD_C__
118
119#include "aslcompiler.h"
120#include "amlcode.h"
121#include "acdispat.h"
122#include "acnamesp.h"
123
124#include "aslcompiler.y.h"
125
126#define _COMPONENT ACPI_COMPILER
127 ACPI_MODULE_NAME ("aslload")
128
129
130/*******************************************************************************
131 *
132 * FUNCTION: LdLoadNamespace
133 *
134 * PARAMETERS: None
135 *
136 * RETURN: Status
137 *
138 * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the
139 * named ASL/AML objects into the namespace. The namespace is
140 * constructed in order to resolve named references and references
141 * to named fields within resource templates/descriptors.
142 *
143 ******************************************************************************/
144
145ACPI_STATUS
146LdLoadNamespace (
147 ACPI_PARSE_OBJECT *RootOp)
148{
149 ACPI_WALK_STATE *WalkState;
150
151
152 DbgPrint (ASL_DEBUG_OUTPUT, "\nCreating namespace\n\n");
153
154 /* Create a new walk state */
155
156 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
157 if (!WalkState)
158 {
159 return AE_NO_MEMORY;
160 }
161
162 /* Perform the walk of the parse tree */
163
164 TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin,
165 LdNamespace1End, WalkState);
166
167 /* Dump the namespace if debug is enabled */
168
169 AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX);
170 return AE_OK;
171}
172
173
174/*******************************************************************************
175 *
176 * FUNCTION: LdLoadFieldElements
177 *
178 * PARAMETERS: Op - Parent node (Field)
179 * WalkState - Current walk state
180 *
181 * RETURN: Status
182 *
183 * DESCRIPTION: Enter the named elements of the field (children of the parent)
184 * into the namespace.
185 *
186 ******************************************************************************/
187
188ACPI_STATUS
189LdLoadFieldElements (
190 ACPI_PARSE_OBJECT *Op,
191 ACPI_WALK_STATE *WalkState)
192{
193 ACPI_PARSE_OBJECT *Child = NULL;
194 ACPI_NAMESPACE_NODE *Node;
195 ACPI_STATUS Status;
196
197
198 /* Get the first named field element */
199
200 switch (Op->Asl.AmlOpcode)
201 {
202 case AML_BANK_FIELD_OP:
203
204 Child = UtGetArg (Op, 6);
205 break;
206
207 case AML_INDEX_FIELD_OP:
208
209 Child = UtGetArg (Op, 5);
210 break;
211
212 case AML_FIELD_OP:
213
214 Child = UtGetArg (Op, 4);
215 break;
216
217 default:
218 /* No other opcodes should arrive here */
219 return (AE_BAD_PARAMETER);
220 }
221
222 /* Enter all elements into the namespace */
223
224 while (Child)
225 {
226 switch (Child->Asl.AmlOpcode)
227 {
228 case AML_INT_RESERVEDFIELD_OP:
229 case AML_INT_ACCESSFIELD_OP:
230
231 break;
232
233 default:
234
235 Status = AcpiNsLookup (WalkState->ScopeInfo, Child->Asl.Value.String,
236 ACPI_TYPE_LOCAL_REGION_FIELD, ACPI_IMODE_LOAD_PASS1,
237 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND,
238 NULL, &Node);
239 if (ACPI_FAILURE (Status))
240 {
241 if (Status != AE_ALREADY_EXISTS)
242 {
243 return (Status);
244 }
245
246 /*
247 * The name already exists in this scope
248 * But continue processing the elements
249 */
250 AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child, Child->Asl.Value.String);
251 }
252 else
253 {
254 Child->Asl.Node = Node;
255 Node->Object = (ACPI_OPERAND_OBJECT *) Child;
256 }
257 break;
258 }
259 Child = Child->Asl.Next;
260 }
261 return (AE_OK);
262}
263
264
265/*******************************************************************************
266 *
267 * FUNCTION: LdLoadResourceElements
268 *
269 * PARAMETERS: Op - Parent node (Resource Descriptor)
270 * WalkState - Current walk state
271 *
272 * RETURN: Status
273 *
274 * DESCRIPTION: Enter the named elements of the resource descriptor (children
275 * of the parent) into the namespace.
276 *
277 * NOTE: In the real AML namespace, these named elements never exist. But
278 * we simply use the namespace here as a symbol table so we can look
279 * them up as they are referenced.
280 *
281 ******************************************************************************/
282
283ACPI_STATUS
284LdLoadResourceElements (
285 ACPI_PARSE_OBJECT *Op,
286 ACPI_WALK_STATE *WalkState)
287{
288 ACPI_PARSE_OBJECT *InitializerOp = NULL;
289 ACPI_NAMESPACE_NODE *Node;
290 ACPI_STATUS Status;
291
292
293 /*
294 * Enter the resouce name into the namespace
295 * This opens a scope
296 */
297 Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath,
298 ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH,
299 WalkState, &Node);
300 if (ACPI_FAILURE (Status))
301 {
302 return (Status);
303 }
304
305 /*
306 * Now enter the predefined fields, for easy lookup when referenced
307 * by the source ASL
308 */
309 InitializerOp = ASL_GET_CHILD_NODE (Op);
310 while (InitializerOp)
311 {
312
313 if (InitializerOp->Asl.ExternalName)
314 {
315 Status = AcpiNsLookup (WalkState->ScopeInfo,
316 InitializerOp->Asl.ExternalName,
317 ACPI_TYPE_LOCAL_RESOURCE_FIELD,
318 ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE,
319 NULL, &Node);
320 if (ACPI_FAILURE (Status))
321 {
322 return (Status);
323 }
324
325 /*
326 * Store the field offset in the namespace node so it
327 * can be used when the field is referenced
328 */
329 Node->OwnerId = (UINT16) InitializerOp->Asl.Value.Integer;
330 InitializerOp->Asl.Node = Node;
331 Node->Object = (ACPI_OPERAND_OBJECT *) InitializerOp;
332
333 /* Pass thru the field type (Bitfield or Bytefield) */
334
335 if (InitializerOp->Asl.CompileFlags & NODE_IS_BIT_OFFSET)
336 {
337 Node->Flags |= ANOBJ_IS_BIT_OFFSET;
338 }
339 }
340 InitializerOp = ASL_GET_PEER_NODE (InitializerOp);
341 }
342
343 return (AE_OK);
344}
345
346
347/*******************************************************************************
348 *
349 * FUNCTION: LdNamespace1Begin
350 *
351 * PARAMETERS: ASL_WALK_CALLBACK
352 *
353 * RETURN: Status
354 *
355 * DESCRIPTION: Descending callback used during the parse tree walk. If this
356 * is a named AML opcode, enter into the namespace
357 *
358 ******************************************************************************/
359
360ACPI_STATUS
361LdNamespace1Begin (
362 ACPI_PARSE_OBJECT *Op,
363 UINT32 Level,
364 void *Context)
365{
366 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
367 ACPI_NAMESPACE_NODE *Node;
368 ACPI_STATUS Status;
369 ACPI_OBJECT_TYPE ObjectType;
370 ACPI_OBJECT_TYPE ActualObjectType = ACPI_TYPE_ANY;
371 char *Path;
372 UINT32 Flags = ACPI_NS_NO_UPSEARCH;
373 ACPI_PARSE_OBJECT *Arg;
374 UINT32 i;
375
376
377 ACPI_FUNCTION_NAME ("LdNamespace1Begin");
378 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
379 Op, Op->Asl.ParseOpName));
380
381
382 /*
383 * We are only interested in opcodes that have an associated name
384 * (or multiple names)
385 */
386 switch (Op->Asl.AmlOpcode)
387 {
388 case AML_BANK_FIELD_OP:
389 case AML_INDEX_FIELD_OP:
390 case AML_FIELD_OP:
391
392 Status = LdLoadFieldElements (Op, WalkState);
393 return (Status);
394
395 default:
396
397 /* All other opcodes go below */
398 break;
399 }
400
401 /* Check if this object has already been installed in the namespace */
402
403 if (Op->Asl.Node)
404 {
405 return (AE_OK);
406 }
407
408 Path = Op->Asl.Namepath;
409 if (!Path)
410 {
411 return (AE_OK);
412 }
413
414 /* Map the raw opcode into an internal object type */
415
416 switch (Op->Asl.ParseOpcode)
417 {
418 case PARSEOP_NAME:
419
420 Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */
421 Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */
422
423 /* Get the data type associated with the named object, not the name itself */
424
425 /* Log2 loop to convert from Btype (binary) to Etype (encoded) */
426
427 ObjectType = 1;
428 for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2)
429 {
430 ObjectType++;
431 }
432 break;
433
434
435 case PARSEOP_EXTERNAL:
436
437 /*
438 * "External" simply enters a name and type into the namespace.
439 * We must be careful to not open a new scope, however, no matter
440 * what type the external name refers to (e.g., a method)
441 *
442 * first child is name, next child is ObjectType
443 */
444 ActualObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer;
445 ObjectType = ACPI_TYPE_ANY;
446 break;
447
448
449 case PARSEOP_DEFAULT_ARG:
450
451 if(Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)
452 {
453 Status = LdLoadResourceElements (Op, WalkState);
454 goto Exit;
455 }
456
457 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
458 break;
459
460
461 case PARSEOP_SCOPE:
462
463 /*
464 * The name referenced by Scope(Name) must already exist at this point.
465 * In other words, forward references for Scope() are not supported.
466 * The only real reason for this is that the MS interpreter cannot
467 * handle this case. Perhaps someday this case can go away.
468 */
469 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
470 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
471 if (ACPI_FAILURE (Status))
472 {
473 if (Status == AE_NOT_FOUND)
474 {
475 /* The name was not found, go ahead and create it */
476
477 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_LOCAL_SCOPE,
478 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node));
479
480 /*
481 * However, this is an error -- primarily because the MS
482 * interpreter can't handle a forward reference from the
483 * Scope() operator.
484 */
485 AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, Op->Asl.ExternalName);
486 AslError (ASL_ERROR, ASL_MSG_SCOPE_FWD_REF, Op, Op->Asl.ExternalName);
487 goto FinishNode;
488 }
489
490 AslCoreSubsystemError (Op, Status, "Failure from lookup\n", FALSE);
491 goto Exit;
492 }
493
494 /* We found a node with this name, now check the type */
495
496 switch (Node->Type)
497 {
498 case ACPI_TYPE_LOCAL_SCOPE:
499 case ACPI_TYPE_DEVICE:
500 case ACPI_TYPE_POWER:
501 case ACPI_TYPE_PROCESSOR:
502 case ACPI_TYPE_THERMAL:
503
504 /* These are acceptable types - they all open a new scope */
505 break;
506
507 case ACPI_TYPE_INTEGER:
508 case ACPI_TYPE_STRING:
509 case ACPI_TYPE_BUFFER:
510
511 /*
512 * These types we will allow, but we will change the type. This
513 * enables some existing code of the form:
514 *
515 * Name (DEB, 0)
516 * Scope (DEB) { ... }
517 *
518 * Which is used to workaround the fact that the MS interpreter
519 * does not allow Scope() forward references.
520 */
521 sprintf (MsgBuffer, "%s, %s, Changing type to (Scope)",
522 Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
523 AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
524
525 /*
526 * Switch the type
527 */
528 Node->Type = ACPI_TYPE_ANY;
529 break;
530
531 default:
532
533 /*
534 * All other types are an error
535 */
536 sprintf (MsgBuffer, "%s, %s", Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
537 AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
538
539 /*
540 * However, switch the type to be an actual scope so
541 * that compilation can continue without generating a whole
542 * cascade of additional errors.
543 */
544 Node->Type = ACPI_TYPE_ANY;
545 break;
546 }
547
548 Status = AE_OK;
549 goto FinishNode;
550
551
552 default:
553
554 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
555 break;
556 }
557
558
559 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n",
560 Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType)));
561
562 /* The name must not already exist */
563
564 Flags |= ACPI_NS_ERROR_IF_FOUND;
565
566 /*
567 * Enter the named type into the internal namespace. We enter the name
568 * as we go downward in the parse tree. Any necessary subobjects that involve
569 * arguments to the opcode must be created as we go back up the parse tree later.
570 */
571 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
572 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node));
573 if (ACPI_FAILURE (Status))
574 {
575 if (Status == AE_ALREADY_EXISTS)
576 {
577 /* The name already exists in this scope */
578
579 if (Node->Type == ACPI_TYPE_LOCAL_SCOPE)
580 {
581 Node->Type = (UINT8) ObjectType;
582 Status = AE_OK;
583 }
584 else
585 {
586 AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op, Op->Asl.ExternalName);
587 Status = AE_OK;
588 goto Exit;
589 }
590 }
591 else
592 {
593 AslCoreSubsystemError (Op, Status, "Failure from lookup %s\n", FALSE);
594 goto Exit;
595 }
596 }
597
598
599FinishNode:
600 /*
601 * Point the parse node to the new namespace node, and point
602 * the Node back to the original Parse node
603 */
604 Op->Asl.Node = Node;
605 Node->Object = (ACPI_OPERAND_OBJECT *) Op;
606
607 /* Set the actual data type if appropriate (EXTERNAL term only) */
608
609 if (ActualObjectType != ACPI_TYPE_ANY)
610 {
611 Node->Type = (UINT8) ActualObjectType;
612 Node->OwnerId = ASL_EXTERNAL_METHOD;
613 }
614
615 if (Op->Asl.ParseOpcode == PARSEOP_METHOD)
616 {
617 /*
618 * Get the method argument count from "Extra" and store
619 * it in the OwnerId field of the namespace node
620 */
621 Node->OwnerId = (UINT16) Op->Asl.Extra;
622 }
623
624Exit:
625 return (Status);
626}
627
628
629/*******************************************************************************
630 *
631 * FUNCTION: LdNamespace1End
632 *
633 * PARAMETERS: ASL_WALK_CALLBACK
634 *
635 * RETURN: Status
636 *
637 * DESCRIPTION: Ascending callback used during the loading of the namespace,
638 * We only need to worry about managing the scope stack here.
639 *
640 ******************************************************************************/
641
642ACPI_STATUS
643LdNamespace1End (
644 ACPI_PARSE_OBJECT *Op,
645 UINT32 Level,
646 void *Context)
647{
648 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
649 ACPI_OBJECT_TYPE ObjectType;
650
651
652 ACPI_FUNCTION_NAME ("LdNamespace1End");
653
654
655 /* We are only interested in opcodes that have an associated name */
656
657 if (!Op->Asl.Namepath)
658 {
659 return (AE_OK);
660 }
661
662 /* Get the type to determine if we should pop the scope */
663
664 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
665 (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC))
666 {
667 /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */
668
669 ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
670 }
671 else
672 {
673 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
674 }
675
676 /* Pop the scope stack */
677
678 if (AcpiNsOpensScope (ObjectType))
679 {
680
681 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
682 "(%s): Popping scope for Op [%s] %p\n",
683 AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op));
684
685 AcpiDsScopeStackPop (WalkState);
686 }
687
688 return (AE_OK);
689}
690
691
| 13 * All rights reserved.
14 *
15 * 2. License
16 *
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
20 * property rights.
21 *
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
28 *
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;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
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.
54 *
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
65 * make.
66 *
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
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
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.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
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
89 * PARTICULAR PURPOSE.
90 *
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
98 * LIMITED REMEDY.
99 *
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.
114 *
115 *****************************************************************************/
116
117#define __ASLLOAD_C__
118
119#include "aslcompiler.h"
120#include "amlcode.h"
121#include "acdispat.h"
122#include "acnamesp.h"
123
124#include "aslcompiler.y.h"
125
126#define _COMPONENT ACPI_COMPILER
127 ACPI_MODULE_NAME ("aslload")
128
129
130/*******************************************************************************
131 *
132 * FUNCTION: LdLoadNamespace
133 *
134 * PARAMETERS: None
135 *
136 * RETURN: Status
137 *
138 * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the
139 * named ASL/AML objects into the namespace. The namespace is
140 * constructed in order to resolve named references and references
141 * to named fields within resource templates/descriptors.
142 *
143 ******************************************************************************/
144
145ACPI_STATUS
146LdLoadNamespace (
147 ACPI_PARSE_OBJECT *RootOp)
148{
149 ACPI_WALK_STATE *WalkState;
150
151
152 DbgPrint (ASL_DEBUG_OUTPUT, "\nCreating namespace\n\n");
153
154 /* Create a new walk state */
155
156 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
157 if (!WalkState)
158 {
159 return AE_NO_MEMORY;
160 }
161
162 /* Perform the walk of the parse tree */
163
164 TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin,
165 LdNamespace1End, WalkState);
166
167 /* Dump the namespace if debug is enabled */
168
169 AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX);
170 return AE_OK;
171}
172
173
174/*******************************************************************************
175 *
176 * FUNCTION: LdLoadFieldElements
177 *
178 * PARAMETERS: Op - Parent node (Field)
179 * WalkState - Current walk state
180 *
181 * RETURN: Status
182 *
183 * DESCRIPTION: Enter the named elements of the field (children of the parent)
184 * into the namespace.
185 *
186 ******************************************************************************/
187
188ACPI_STATUS
189LdLoadFieldElements (
190 ACPI_PARSE_OBJECT *Op,
191 ACPI_WALK_STATE *WalkState)
192{
193 ACPI_PARSE_OBJECT *Child = NULL;
194 ACPI_NAMESPACE_NODE *Node;
195 ACPI_STATUS Status;
196
197
198 /* Get the first named field element */
199
200 switch (Op->Asl.AmlOpcode)
201 {
202 case AML_BANK_FIELD_OP:
203
204 Child = UtGetArg (Op, 6);
205 break;
206
207 case AML_INDEX_FIELD_OP:
208
209 Child = UtGetArg (Op, 5);
210 break;
211
212 case AML_FIELD_OP:
213
214 Child = UtGetArg (Op, 4);
215 break;
216
217 default:
218 /* No other opcodes should arrive here */
219 return (AE_BAD_PARAMETER);
220 }
221
222 /* Enter all elements into the namespace */
223
224 while (Child)
225 {
226 switch (Child->Asl.AmlOpcode)
227 {
228 case AML_INT_RESERVEDFIELD_OP:
229 case AML_INT_ACCESSFIELD_OP:
230
231 break;
232
233 default:
234
235 Status = AcpiNsLookup (WalkState->ScopeInfo, Child->Asl.Value.String,
236 ACPI_TYPE_LOCAL_REGION_FIELD, ACPI_IMODE_LOAD_PASS1,
237 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND,
238 NULL, &Node);
239 if (ACPI_FAILURE (Status))
240 {
241 if (Status != AE_ALREADY_EXISTS)
242 {
243 return (Status);
244 }
245
246 /*
247 * The name already exists in this scope
248 * But continue processing the elements
249 */
250 AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child, Child->Asl.Value.String);
251 }
252 else
253 {
254 Child->Asl.Node = Node;
255 Node->Object = (ACPI_OPERAND_OBJECT *) Child;
256 }
257 break;
258 }
259 Child = Child->Asl.Next;
260 }
261 return (AE_OK);
262}
263
264
265/*******************************************************************************
266 *
267 * FUNCTION: LdLoadResourceElements
268 *
269 * PARAMETERS: Op - Parent node (Resource Descriptor)
270 * WalkState - Current walk state
271 *
272 * RETURN: Status
273 *
274 * DESCRIPTION: Enter the named elements of the resource descriptor (children
275 * of the parent) into the namespace.
276 *
277 * NOTE: In the real AML namespace, these named elements never exist. But
278 * we simply use the namespace here as a symbol table so we can look
279 * them up as they are referenced.
280 *
281 ******************************************************************************/
282
283ACPI_STATUS
284LdLoadResourceElements (
285 ACPI_PARSE_OBJECT *Op,
286 ACPI_WALK_STATE *WalkState)
287{
288 ACPI_PARSE_OBJECT *InitializerOp = NULL;
289 ACPI_NAMESPACE_NODE *Node;
290 ACPI_STATUS Status;
291
292
293 /*
294 * Enter the resouce name into the namespace
295 * This opens a scope
296 */
297 Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath,
298 ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH,
299 WalkState, &Node);
300 if (ACPI_FAILURE (Status))
301 {
302 return (Status);
303 }
304
305 /*
306 * Now enter the predefined fields, for easy lookup when referenced
307 * by the source ASL
308 */
309 InitializerOp = ASL_GET_CHILD_NODE (Op);
310 while (InitializerOp)
311 {
312
313 if (InitializerOp->Asl.ExternalName)
314 {
315 Status = AcpiNsLookup (WalkState->ScopeInfo,
316 InitializerOp->Asl.ExternalName,
317 ACPI_TYPE_LOCAL_RESOURCE_FIELD,
318 ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE,
319 NULL, &Node);
320 if (ACPI_FAILURE (Status))
321 {
322 return (Status);
323 }
324
325 /*
326 * Store the field offset in the namespace node so it
327 * can be used when the field is referenced
328 */
329 Node->OwnerId = (UINT16) InitializerOp->Asl.Value.Integer;
330 InitializerOp->Asl.Node = Node;
331 Node->Object = (ACPI_OPERAND_OBJECT *) InitializerOp;
332
333 /* Pass thru the field type (Bitfield or Bytefield) */
334
335 if (InitializerOp->Asl.CompileFlags & NODE_IS_BIT_OFFSET)
336 {
337 Node->Flags |= ANOBJ_IS_BIT_OFFSET;
338 }
339 }
340 InitializerOp = ASL_GET_PEER_NODE (InitializerOp);
341 }
342
343 return (AE_OK);
344}
345
346
347/*******************************************************************************
348 *
349 * FUNCTION: LdNamespace1Begin
350 *
351 * PARAMETERS: ASL_WALK_CALLBACK
352 *
353 * RETURN: Status
354 *
355 * DESCRIPTION: Descending callback used during the parse tree walk. If this
356 * is a named AML opcode, enter into the namespace
357 *
358 ******************************************************************************/
359
360ACPI_STATUS
361LdNamespace1Begin (
362 ACPI_PARSE_OBJECT *Op,
363 UINT32 Level,
364 void *Context)
365{
366 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
367 ACPI_NAMESPACE_NODE *Node;
368 ACPI_STATUS Status;
369 ACPI_OBJECT_TYPE ObjectType;
370 ACPI_OBJECT_TYPE ActualObjectType = ACPI_TYPE_ANY;
371 char *Path;
372 UINT32 Flags = ACPI_NS_NO_UPSEARCH;
373 ACPI_PARSE_OBJECT *Arg;
374 UINT32 i;
375
376
377 ACPI_FUNCTION_NAME ("LdNamespace1Begin");
378 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
379 Op, Op->Asl.ParseOpName));
380
381
382 /*
383 * We are only interested in opcodes that have an associated name
384 * (or multiple names)
385 */
386 switch (Op->Asl.AmlOpcode)
387 {
388 case AML_BANK_FIELD_OP:
389 case AML_INDEX_FIELD_OP:
390 case AML_FIELD_OP:
391
392 Status = LdLoadFieldElements (Op, WalkState);
393 return (Status);
394
395 default:
396
397 /* All other opcodes go below */
398 break;
399 }
400
401 /* Check if this object has already been installed in the namespace */
402
403 if (Op->Asl.Node)
404 {
405 return (AE_OK);
406 }
407
408 Path = Op->Asl.Namepath;
409 if (!Path)
410 {
411 return (AE_OK);
412 }
413
414 /* Map the raw opcode into an internal object type */
415
416 switch (Op->Asl.ParseOpcode)
417 {
418 case PARSEOP_NAME:
419
420 Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */
421 Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */
422
423 /* Get the data type associated with the named object, not the name itself */
424
425 /* Log2 loop to convert from Btype (binary) to Etype (encoded) */
426
427 ObjectType = 1;
428 for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2)
429 {
430 ObjectType++;
431 }
432 break;
433
434
435 case PARSEOP_EXTERNAL:
436
437 /*
438 * "External" simply enters a name and type into the namespace.
439 * We must be careful to not open a new scope, however, no matter
440 * what type the external name refers to (e.g., a method)
441 *
442 * first child is name, next child is ObjectType
443 */
444 ActualObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer;
445 ObjectType = ACPI_TYPE_ANY;
446 break;
447
448
449 case PARSEOP_DEFAULT_ARG:
450
451 if(Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)
452 {
453 Status = LdLoadResourceElements (Op, WalkState);
454 goto Exit;
455 }
456
457 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
458 break;
459
460
461 case PARSEOP_SCOPE:
462
463 /*
464 * The name referenced by Scope(Name) must already exist at this point.
465 * In other words, forward references for Scope() are not supported.
466 * The only real reason for this is that the MS interpreter cannot
467 * handle this case. Perhaps someday this case can go away.
468 */
469 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
470 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
471 if (ACPI_FAILURE (Status))
472 {
473 if (Status == AE_NOT_FOUND)
474 {
475 /* The name was not found, go ahead and create it */
476
477 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_LOCAL_SCOPE,
478 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node));
479
480 /*
481 * However, this is an error -- primarily because the MS
482 * interpreter can't handle a forward reference from the
483 * Scope() operator.
484 */
485 AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, Op->Asl.ExternalName);
486 AslError (ASL_ERROR, ASL_MSG_SCOPE_FWD_REF, Op, Op->Asl.ExternalName);
487 goto FinishNode;
488 }
489
490 AslCoreSubsystemError (Op, Status, "Failure from lookup\n", FALSE);
491 goto Exit;
492 }
493
494 /* We found a node with this name, now check the type */
495
496 switch (Node->Type)
497 {
498 case ACPI_TYPE_LOCAL_SCOPE:
499 case ACPI_TYPE_DEVICE:
500 case ACPI_TYPE_POWER:
501 case ACPI_TYPE_PROCESSOR:
502 case ACPI_TYPE_THERMAL:
503
504 /* These are acceptable types - they all open a new scope */
505 break;
506
507 case ACPI_TYPE_INTEGER:
508 case ACPI_TYPE_STRING:
509 case ACPI_TYPE_BUFFER:
510
511 /*
512 * These types we will allow, but we will change the type. This
513 * enables some existing code of the form:
514 *
515 * Name (DEB, 0)
516 * Scope (DEB) { ... }
517 *
518 * Which is used to workaround the fact that the MS interpreter
519 * does not allow Scope() forward references.
520 */
521 sprintf (MsgBuffer, "%s, %s, Changing type to (Scope)",
522 Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
523 AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
524
525 /*
526 * Switch the type
527 */
528 Node->Type = ACPI_TYPE_ANY;
529 break;
530
531 default:
532
533 /*
534 * All other types are an error
535 */
536 sprintf (MsgBuffer, "%s, %s", Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
537 AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
538
539 /*
540 * However, switch the type to be an actual scope so
541 * that compilation can continue without generating a whole
542 * cascade of additional errors.
543 */
544 Node->Type = ACPI_TYPE_ANY;
545 break;
546 }
547
548 Status = AE_OK;
549 goto FinishNode;
550
551
552 default:
553
554 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
555 break;
556 }
557
558
559 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n",
560 Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType)));
561
562 /* The name must not already exist */
563
564 Flags |= ACPI_NS_ERROR_IF_FOUND;
565
566 /*
567 * Enter the named type into the internal namespace. We enter the name
568 * as we go downward in the parse tree. Any necessary subobjects that involve
569 * arguments to the opcode must be created as we go back up the parse tree later.
570 */
571 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
572 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node));
573 if (ACPI_FAILURE (Status))
574 {
575 if (Status == AE_ALREADY_EXISTS)
576 {
577 /* The name already exists in this scope */
578
579 if (Node->Type == ACPI_TYPE_LOCAL_SCOPE)
580 {
581 Node->Type = (UINT8) ObjectType;
582 Status = AE_OK;
583 }
584 else
585 {
586 AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op, Op->Asl.ExternalName);
587 Status = AE_OK;
588 goto Exit;
589 }
590 }
591 else
592 {
593 AslCoreSubsystemError (Op, Status, "Failure from lookup %s\n", FALSE);
594 goto Exit;
595 }
596 }
597
598
599FinishNode:
600 /*
601 * Point the parse node to the new namespace node, and point
602 * the Node back to the original Parse node
603 */
604 Op->Asl.Node = Node;
605 Node->Object = (ACPI_OPERAND_OBJECT *) Op;
606
607 /* Set the actual data type if appropriate (EXTERNAL term only) */
608
609 if (ActualObjectType != ACPI_TYPE_ANY)
610 {
611 Node->Type = (UINT8) ActualObjectType;
612 Node->OwnerId = ASL_EXTERNAL_METHOD;
613 }
614
615 if (Op->Asl.ParseOpcode == PARSEOP_METHOD)
616 {
617 /*
618 * Get the method argument count from "Extra" and store
619 * it in the OwnerId field of the namespace node
620 */
621 Node->OwnerId = (UINT16) Op->Asl.Extra;
622 }
623
624Exit:
625 return (Status);
626}
627
628
629/*******************************************************************************
630 *
631 * FUNCTION: LdNamespace1End
632 *
633 * PARAMETERS: ASL_WALK_CALLBACK
634 *
635 * RETURN: Status
636 *
637 * DESCRIPTION: Ascending callback used during the loading of the namespace,
638 * We only need to worry about managing the scope stack here.
639 *
640 ******************************************************************************/
641
642ACPI_STATUS
643LdNamespace1End (
644 ACPI_PARSE_OBJECT *Op,
645 UINT32 Level,
646 void *Context)
647{
648 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
649 ACPI_OBJECT_TYPE ObjectType;
650
651
652 ACPI_FUNCTION_NAME ("LdNamespace1End");
653
654
655 /* We are only interested in opcodes that have an associated name */
656
657 if (!Op->Asl.Namepath)
658 {
659 return (AE_OK);
660 }
661
662 /* Get the type to determine if we should pop the scope */
663
664 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
665 (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC))
666 {
667 /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */
668
669 ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
670 }
671 else
672 {
673 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
674 }
675
676 /* Pop the scope stack */
677
678 if (AcpiNsOpensScope (ObjectType))
679 {
680
681 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
682 "(%s): Popping scope for Op [%s] %p\n",
683 AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op));
684
685 AcpiDsScopeStackPop (WalkState);
686 }
687
688 return (AE_OK);
689}
690
691
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