1 | /****************************************************************************** |
2 | * |
3 | * Module Name: nsutils - Utilities for accessing ACPI namespace, accessing |
4 | * parents and siblings and Scope manipulation |
5 | * |
6 | *****************************************************************************/ |
7 | |
8 | /* |
9 | * Copyright (C) 2000 - 2016, Intel Corp. |
10 | * All rights reserved. |
11 | * |
12 | * Redistribution and use in source and binary forms, with or without |
13 | * modification, are permitted provided that the following conditions |
14 | * are met: |
15 | * 1. Redistributions of source code must retain the above copyright |
16 | * notice, this list of conditions, and the following disclaimer, |
17 | * without modification. |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
19 | * substantially similar to the "NO WARRANTY" disclaimer below |
20 | * ("Disclaimer") and any redistribution must be conditioned upon |
21 | * including a substantially similar Disclaimer requirement for further |
22 | * binary redistribution. |
23 | * 3. Neither the names of the above-listed copyright holders nor the names |
24 | * of any contributors may be used to endorse or promote products derived |
25 | * from this software without specific prior written permission. |
26 | * |
27 | * Alternatively, this software may be distributed under the terms of the |
28 | * GNU General Public License ("GPL") version 2 as published by the Free |
29 | * Software Foundation. |
30 | * |
31 | * NO WARRANTY |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
42 | * POSSIBILITY OF SUCH DAMAGES. |
43 | */ |
44 | |
45 | #include "acpi.h" |
46 | #include "accommon.h" |
47 | #include "acnamesp.h" |
48 | #include "amlcode.h" |
49 | |
50 | #define _COMPONENT ACPI_NAMESPACE |
51 | ACPI_MODULE_NAME ("nsutils" ) |
52 | |
53 | /* Local prototypes */ |
54 | |
55 | #ifdef ACPI_OBSOLETE_FUNCTIONS |
56 | ACPI_NAME |
57 | AcpiNsFindParentName ( |
58 | ACPI_NAMESPACE_NODE *NodeToSearch); |
59 | #endif |
60 | |
61 | |
62 | /******************************************************************************* |
63 | * |
64 | * FUNCTION: AcpiNsPrintNodePathname |
65 | * |
66 | * PARAMETERS: Node - Object |
67 | * Message - Prefix message |
68 | * |
69 | * DESCRIPTION: Print an object's full namespace pathname |
70 | * Manages allocation/freeing of a pathname buffer |
71 | * |
72 | ******************************************************************************/ |
73 | |
74 | void |
75 | AcpiNsPrintNodePathname ( |
76 | ACPI_NAMESPACE_NODE *Node, |
77 | const char *Message) |
78 | { |
79 | ACPI_BUFFER Buffer; |
80 | ACPI_STATUS Status; |
81 | |
82 | |
83 | if (!Node) |
84 | { |
85 | AcpiOsPrintf ("[NULL NAME]" ); |
86 | return; |
87 | } |
88 | |
89 | /* Convert handle to full pathname and print it (with supplied message) */ |
90 | |
91 | Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
92 | |
93 | Status = AcpiNsHandleToPathname (Node, &Buffer, TRUE); |
94 | if (ACPI_SUCCESS (Status)) |
95 | { |
96 | if (Message) |
97 | { |
98 | AcpiOsPrintf ("%s " , Message); |
99 | } |
100 | |
101 | AcpiOsPrintf ("[%s] (Node %p)" , (char *) Buffer.Pointer, Node); |
102 | ACPI_FREE (Buffer.Pointer); |
103 | } |
104 | } |
105 | |
106 | |
107 | /******************************************************************************* |
108 | * |
109 | * FUNCTION: AcpiNsGetType |
110 | * |
111 | * PARAMETERS: Node - Parent Node to be examined |
112 | * |
113 | * RETURN: Type field from Node whose handle is passed |
114 | * |
115 | * DESCRIPTION: Return the type of a Namespace node |
116 | * |
117 | ******************************************************************************/ |
118 | |
119 | ACPI_OBJECT_TYPE |
120 | AcpiNsGetType ( |
121 | ACPI_NAMESPACE_NODE *Node) |
122 | { |
123 | ACPI_FUNCTION_TRACE (NsGetType); |
124 | |
125 | |
126 | if (!Node) |
127 | { |
128 | ACPI_WARNING ((AE_INFO, "Null Node parameter" )); |
129 | return_UINT8 (ACPI_TYPE_ANY); |
130 | } |
131 | |
132 | return_UINT8 (Node->Type); |
133 | } |
134 | |
135 | |
136 | /******************************************************************************* |
137 | * |
138 | * FUNCTION: AcpiNsLocal |
139 | * |
140 | * PARAMETERS: Type - A namespace object type |
141 | * |
142 | * RETURN: LOCAL if names must be found locally in objects of the |
143 | * passed type, 0 if enclosing scopes should be searched |
144 | * |
145 | * DESCRIPTION: Returns scope rule for the given object type. |
146 | * |
147 | ******************************************************************************/ |
148 | |
149 | UINT32 |
150 | AcpiNsLocal ( |
151 | ACPI_OBJECT_TYPE Type) |
152 | { |
153 | ACPI_FUNCTION_TRACE (NsLocal); |
154 | |
155 | |
156 | if (!AcpiUtValidObjectType (Type)) |
157 | { |
158 | /* Type code out of range */ |
159 | |
160 | ACPI_WARNING ((AE_INFO, "Invalid Object Type 0x%X" , Type)); |
161 | return_UINT32 (ACPI_NS_NORMAL); |
162 | } |
163 | |
164 | return_UINT32 (AcpiGbl_NsProperties[Type] & ACPI_NS_LOCAL); |
165 | } |
166 | |
167 | |
168 | /******************************************************************************* |
169 | * |
170 | * FUNCTION: AcpiNsGetInternalNameLength |
171 | * |
172 | * PARAMETERS: Info - Info struct initialized with the |
173 | * external name pointer. |
174 | * |
175 | * RETURN: None |
176 | * |
177 | * DESCRIPTION: Calculate the length of the internal (AML) namestring |
178 | * corresponding to the external (ASL) namestring. |
179 | * |
180 | ******************************************************************************/ |
181 | |
182 | void |
183 | AcpiNsGetInternalNameLength ( |
184 | ACPI_NAMESTRING_INFO *Info) |
185 | { |
186 | const char *NextExternalChar; |
187 | UINT32 i; |
188 | |
189 | |
190 | ACPI_FUNCTION_ENTRY (); |
191 | |
192 | |
193 | NextExternalChar = Info->ExternalName; |
194 | Info->NumCarats = 0; |
195 | Info->NumSegments = 0; |
196 | Info->FullyQualified = FALSE; |
197 | |
198 | /* |
199 | * For the internal name, the required length is 4 bytes per segment, |
200 | * plus 1 each for RootPrefix, MultiNamePrefixOp, segment count, |
201 | * trailing null (which is not really needed, but no there's harm in |
202 | * putting it there) |
203 | * |
204 | * strlen() + 1 covers the first NameSeg, which has no path separator |
205 | */ |
206 | if (ACPI_IS_ROOT_PREFIX (*NextExternalChar)) |
207 | { |
208 | Info->FullyQualified = TRUE; |
209 | NextExternalChar++; |
210 | |
211 | /* Skip redundant RootPrefix, like \\_SB.PCI0.SBRG.EC0 */ |
212 | |
213 | while (ACPI_IS_ROOT_PREFIX (*NextExternalChar)) |
214 | { |
215 | NextExternalChar++; |
216 | } |
217 | } |
218 | else |
219 | { |
220 | /* Handle Carat prefixes */ |
221 | |
222 | while (ACPI_IS_PARENT_PREFIX (*NextExternalChar)) |
223 | { |
224 | Info->NumCarats++; |
225 | NextExternalChar++; |
226 | } |
227 | } |
228 | |
229 | /* |
230 | * Determine the number of ACPI name "segments" by counting the number of |
231 | * path separators within the string. Start with one segment since the |
232 | * segment count is [(# separators) + 1], and zero separators is ok. |
233 | */ |
234 | if (*NextExternalChar) |
235 | { |
236 | Info->NumSegments = 1; |
237 | for (i = 0; NextExternalChar[i]; i++) |
238 | { |
239 | if (ACPI_IS_PATH_SEPARATOR (NextExternalChar[i])) |
240 | { |
241 | Info->NumSegments++; |
242 | } |
243 | } |
244 | } |
245 | |
246 | Info->Length = (ACPI_NAME_SIZE * Info->NumSegments) + |
247 | 4 + Info->NumCarats; |
248 | |
249 | Info->NextExternalChar = NextExternalChar; |
250 | } |
251 | |
252 | |
253 | /******************************************************************************* |
254 | * |
255 | * FUNCTION: AcpiNsBuildInternalName |
256 | * |
257 | * PARAMETERS: Info - Info struct fully initialized |
258 | * |
259 | * RETURN: Status |
260 | * |
261 | * DESCRIPTION: Construct the internal (AML) namestring |
262 | * corresponding to the external (ASL) namestring. |
263 | * |
264 | ******************************************************************************/ |
265 | |
266 | ACPI_STATUS |
267 | AcpiNsBuildInternalName ( |
268 | ACPI_NAMESTRING_INFO *Info) |
269 | { |
270 | UINT32 NumSegments = Info->NumSegments; |
271 | char *InternalName = Info->InternalName; |
272 | const char *ExternalName = Info->NextExternalChar; |
273 | char *Result = NULL; |
274 | UINT32 i; |
275 | |
276 | |
277 | ACPI_FUNCTION_TRACE (NsBuildInternalName); |
278 | |
279 | |
280 | /* Setup the correct prefixes, counts, and pointers */ |
281 | |
282 | if (Info->FullyQualified) |
283 | { |
284 | InternalName[0] = AML_ROOT_PREFIX; |
285 | |
286 | if (NumSegments <= 1) |
287 | { |
288 | Result = &InternalName[1]; |
289 | } |
290 | else if (NumSegments == 2) |
291 | { |
292 | InternalName[1] = AML_DUAL_NAME_PREFIX; |
293 | Result = &InternalName[2]; |
294 | } |
295 | else |
296 | { |
297 | InternalName[1] = AML_MULTI_NAME_PREFIX_OP; |
298 | InternalName[2] = (char) NumSegments; |
299 | Result = &InternalName[3]; |
300 | } |
301 | } |
302 | else |
303 | { |
304 | /* |
305 | * Not fully qualified. |
306 | * Handle Carats first, then append the name segments |
307 | */ |
308 | i = 0; |
309 | if (Info->NumCarats) |
310 | { |
311 | for (i = 0; i < Info->NumCarats; i++) |
312 | { |
313 | InternalName[i] = AML_PARENT_PREFIX; |
314 | } |
315 | } |
316 | |
317 | if (NumSegments <= 1) |
318 | { |
319 | Result = &InternalName[i]; |
320 | } |
321 | else if (NumSegments == 2) |
322 | { |
323 | InternalName[i] = AML_DUAL_NAME_PREFIX; |
324 | Result = &InternalName[(ACPI_SIZE) i+1]; |
325 | } |
326 | else |
327 | { |
328 | InternalName[i] = AML_MULTI_NAME_PREFIX_OP; |
329 | InternalName[(ACPI_SIZE) i+1] = (char) NumSegments; |
330 | Result = &InternalName[(ACPI_SIZE) i+2]; |
331 | } |
332 | } |
333 | |
334 | /* Build the name (minus path separators) */ |
335 | |
336 | for (; NumSegments; NumSegments--) |
337 | { |
338 | for (i = 0; i < ACPI_NAME_SIZE; i++) |
339 | { |
340 | if (ACPI_IS_PATH_SEPARATOR (*ExternalName) || |
341 | (*ExternalName == 0)) |
342 | { |
343 | /* Pad the segment with underscore(s) if segment is short */ |
344 | |
345 | Result[i] = '_'; |
346 | } |
347 | else |
348 | { |
349 | /* Convert the character to uppercase and save it */ |
350 | |
351 | Result[i] = (char) toupper ((int) *ExternalName); |
352 | ExternalName++; |
353 | } |
354 | } |
355 | |
356 | /* Now we must have a path separator, or the pathname is bad */ |
357 | |
358 | if (!ACPI_IS_PATH_SEPARATOR (*ExternalName) && |
359 | (*ExternalName != 0)) |
360 | { |
361 | return_ACPI_STATUS (AE_BAD_PATHNAME); |
362 | } |
363 | |
364 | /* Move on the next segment */ |
365 | |
366 | ExternalName++; |
367 | Result += ACPI_NAME_SIZE; |
368 | } |
369 | |
370 | /* Terminate the string */ |
371 | |
372 | *Result = 0; |
373 | |
374 | if (Info->FullyQualified) |
375 | { |
376 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (abs) \"\\%s\"\n" , |
377 | InternalName, InternalName)); |
378 | } |
379 | else |
380 | { |
381 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n" , |
382 | InternalName, InternalName)); |
383 | } |
384 | |
385 | return_ACPI_STATUS (AE_OK); |
386 | } |
387 | |
388 | |
389 | /******************************************************************************* |
390 | * |
391 | * FUNCTION: AcpiNsInternalizeName |
392 | * |
393 | * PARAMETERS: *ExternalName - External representation of name |
394 | * **Converted Name - Where to return the resulting |
395 | * internal represention of the name |
396 | * |
397 | * RETURN: Status |
398 | * |
399 | * DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0") |
400 | * to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) |
401 | * |
402 | *******************************************************************************/ |
403 | |
404 | ACPI_STATUS |
405 | AcpiNsInternalizeName ( |
406 | const char *ExternalName, |
407 | char **ConvertedName) |
408 | { |
409 | char *InternalName; |
410 | ACPI_NAMESTRING_INFO Info; |
411 | ACPI_STATUS Status; |
412 | |
413 | |
414 | ACPI_FUNCTION_TRACE (NsInternalizeName); |
415 | |
416 | |
417 | if ((!ExternalName) || |
418 | (*ExternalName == 0) || |
419 | (!ConvertedName)) |
420 | { |
421 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
422 | } |
423 | |
424 | /* Get the length of the new internal name */ |
425 | |
426 | Info.ExternalName = ExternalName; |
427 | AcpiNsGetInternalNameLength (&Info); |
428 | |
429 | /* We need a segment to store the internal name */ |
430 | |
431 | InternalName = ACPI_ALLOCATE_ZEROED (Info.Length); |
432 | if (!InternalName) |
433 | { |
434 | return_ACPI_STATUS (AE_NO_MEMORY); |
435 | } |
436 | |
437 | /* Build the name */ |
438 | |
439 | Info.InternalName = InternalName; |
440 | Status = AcpiNsBuildInternalName (&Info); |
441 | if (ACPI_FAILURE (Status)) |
442 | { |
443 | ACPI_FREE (InternalName); |
444 | return_ACPI_STATUS (Status); |
445 | } |
446 | |
447 | *ConvertedName = InternalName; |
448 | return_ACPI_STATUS (AE_OK); |
449 | } |
450 | |
451 | |
452 | /******************************************************************************* |
453 | * |
454 | * FUNCTION: AcpiNsExternalizeName |
455 | * |
456 | * PARAMETERS: InternalNameLength - Lenth of the internal name below |
457 | * InternalName - Internal representation of name |
458 | * ConvertedNameLength - Where the length is returned |
459 | * ConvertedName - Where the resulting external name |
460 | * is returned |
461 | * |
462 | * RETURN: Status |
463 | * |
464 | * DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) |
465 | * to its external (printable) form (e.g. "\_PR_.CPU0") |
466 | * |
467 | ******************************************************************************/ |
468 | |
469 | ACPI_STATUS |
470 | AcpiNsExternalizeName ( |
471 | UINT32 InternalNameLength, |
472 | const char *InternalName, |
473 | UINT32 *ConvertedNameLength, |
474 | char **ConvertedName) |
475 | { |
476 | UINT32 NamesIndex = 0; |
477 | UINT32 NumSegments = 0; |
478 | UINT32 RequiredLength; |
479 | UINT32 PrefixLength = 0; |
480 | UINT32 i = 0; |
481 | UINT32 j = 0; |
482 | |
483 | |
484 | ACPI_FUNCTION_TRACE (NsExternalizeName); |
485 | |
486 | |
487 | if (!InternalNameLength || |
488 | !InternalName || |
489 | !ConvertedName) |
490 | { |
491 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
492 | } |
493 | |
494 | /* Check for a prefix (one '\' | one or more '^') */ |
495 | |
496 | switch (InternalName[0]) |
497 | { |
498 | case AML_ROOT_PREFIX: |
499 | |
500 | PrefixLength = 1; |
501 | break; |
502 | |
503 | case AML_PARENT_PREFIX: |
504 | |
505 | for (i = 0; i < InternalNameLength; i++) |
506 | { |
507 | if (ACPI_IS_PARENT_PREFIX (InternalName[i])) |
508 | { |
509 | PrefixLength = i + 1; |
510 | } |
511 | else |
512 | { |
513 | break; |
514 | } |
515 | } |
516 | |
517 | if (i == InternalNameLength) |
518 | { |
519 | PrefixLength = i; |
520 | } |
521 | |
522 | break; |
523 | |
524 | default: |
525 | |
526 | break; |
527 | } |
528 | |
529 | /* |
530 | * Check for object names. Note that there could be 0-255 of these |
531 | * 4-byte elements. |
532 | */ |
533 | if (PrefixLength < InternalNameLength) |
534 | { |
535 | switch (InternalName[PrefixLength]) |
536 | { |
537 | case AML_MULTI_NAME_PREFIX_OP: |
538 | |
539 | /* <count> 4-byte names */ |
540 | |
541 | NamesIndex = PrefixLength + 2; |
542 | NumSegments = (UINT8) |
543 | InternalName[(ACPI_SIZE) PrefixLength + 1]; |
544 | break; |
545 | |
546 | case AML_DUAL_NAME_PREFIX: |
547 | |
548 | /* Two 4-byte names */ |
549 | |
550 | NamesIndex = PrefixLength + 1; |
551 | NumSegments = 2; |
552 | break; |
553 | |
554 | case 0: |
555 | |
556 | /* NullName */ |
557 | |
558 | NamesIndex = 0; |
559 | NumSegments = 0; |
560 | break; |
561 | |
562 | default: |
563 | |
564 | /* one 4-byte name */ |
565 | |
566 | NamesIndex = PrefixLength; |
567 | NumSegments = 1; |
568 | break; |
569 | } |
570 | } |
571 | |
572 | /* |
573 | * Calculate the length of ConvertedName, which equals the length |
574 | * of the prefix, length of all object names, length of any required |
575 | * punctuation ('.') between object names, plus the NULL terminator. |
576 | */ |
577 | RequiredLength = PrefixLength + (4 * NumSegments) + |
578 | ((NumSegments > 0) ? (NumSegments - 1) : 0) + 1; |
579 | |
580 | /* |
581 | * Check to see if we're still in bounds. If not, there's a problem |
582 | * with InternalName (invalid format). |
583 | */ |
584 | if (RequiredLength > InternalNameLength) |
585 | { |
586 | ACPI_ERROR ((AE_INFO, "Invalid internal name" )); |
587 | return_ACPI_STATUS (AE_BAD_PATHNAME); |
588 | } |
589 | |
590 | /* Build the ConvertedName */ |
591 | |
592 | *ConvertedName = ACPI_ALLOCATE_ZEROED (RequiredLength); |
593 | if (!(*ConvertedName)) |
594 | { |
595 | return_ACPI_STATUS (AE_NO_MEMORY); |
596 | } |
597 | |
598 | j = 0; |
599 | |
600 | for (i = 0; i < PrefixLength; i++) |
601 | { |
602 | (*ConvertedName)[j++] = InternalName[i]; |
603 | } |
604 | |
605 | if (NumSegments > 0) |
606 | { |
607 | for (i = 0; i < NumSegments; i++) |
608 | { |
609 | if (i > 0) |
610 | { |
611 | (*ConvertedName)[j++] = '.'; |
612 | } |
613 | |
614 | /* Copy and validate the 4-char name segment */ |
615 | |
616 | ACPI_MOVE_NAME (&(*ConvertedName)[j], |
617 | &InternalName[NamesIndex]); |
618 | AcpiUtRepairName (&(*ConvertedName)[j]); |
619 | |
620 | j += ACPI_NAME_SIZE; |
621 | NamesIndex += ACPI_NAME_SIZE; |
622 | } |
623 | } |
624 | |
625 | if (ConvertedNameLength) |
626 | { |
627 | *ConvertedNameLength = (UINT32) RequiredLength; |
628 | } |
629 | |
630 | return_ACPI_STATUS (AE_OK); |
631 | } |
632 | |
633 | |
634 | /******************************************************************************* |
635 | * |
636 | * FUNCTION: AcpiNsValidateHandle |
637 | * |
638 | * PARAMETERS: Handle - Handle to be validated and typecast to a |
639 | * namespace node. |
640 | * |
641 | * RETURN: A pointer to a namespace node |
642 | * |
643 | * DESCRIPTION: Convert a namespace handle to a namespace node. Handles special |
644 | * cases for the root node. |
645 | * |
646 | * NOTE: Real integer handles would allow for more verification |
647 | * and keep all pointers within this subsystem - however this introduces |
648 | * more overhead and has not been necessary to this point. Drivers |
649 | * holding handles are typically notified before a node becomes invalid |
650 | * due to a table unload. |
651 | * |
652 | ******************************************************************************/ |
653 | |
654 | ACPI_NAMESPACE_NODE * |
655 | AcpiNsValidateHandle ( |
656 | ACPI_HANDLE Handle) |
657 | { |
658 | |
659 | ACPI_FUNCTION_ENTRY (); |
660 | |
661 | |
662 | /* Parameter validation */ |
663 | |
664 | if ((!Handle) || (Handle == ACPI_ROOT_OBJECT)) |
665 | { |
666 | return (AcpiGbl_RootNode); |
667 | } |
668 | |
669 | /* We can at least attempt to verify the handle */ |
670 | |
671 | if (ACPI_GET_DESCRIPTOR_TYPE (Handle) != ACPI_DESC_TYPE_NAMED) |
672 | { |
673 | return (NULL); |
674 | } |
675 | |
676 | return (ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Handle)); |
677 | } |
678 | |
679 | |
680 | /******************************************************************************* |
681 | * |
682 | * FUNCTION: AcpiNsTerminate |
683 | * |
684 | * PARAMETERS: none |
685 | * |
686 | * RETURN: none |
687 | * |
688 | * DESCRIPTION: free memory allocated for namespace and ACPI table storage. |
689 | * |
690 | ******************************************************************************/ |
691 | |
692 | void |
693 | AcpiNsTerminate ( |
694 | void) |
695 | { |
696 | ACPI_STATUS Status; |
697 | |
698 | |
699 | ACPI_FUNCTION_TRACE (NsTerminate); |
700 | |
701 | |
702 | #ifdef ACPI_EXEC_APP |
703 | { |
704 | ACPI_OPERAND_OBJECT *Prev; |
705 | ACPI_OPERAND_OBJECT *Next; |
706 | |
707 | /* Delete any module-level code blocks */ |
708 | |
709 | Next = AcpiGbl_ModuleCodeList; |
710 | while (Next) |
711 | { |
712 | Prev = Next; |
713 | Next = Next->Method.Mutex; |
714 | Prev->Method.Mutex = NULL; /* Clear the Mutex (cheated) field */ |
715 | AcpiUtRemoveReference (Prev); |
716 | } |
717 | } |
718 | #endif |
719 | |
720 | /* |
721 | * Free the entire namespace -- all nodes and all objects |
722 | * attached to the nodes |
723 | */ |
724 | AcpiNsDeleteNamespaceSubtree (AcpiGbl_RootNode); |
725 | |
726 | /* Delete any objects attached to the root node */ |
727 | |
728 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
729 | if (ACPI_FAILURE (Status)) |
730 | { |
731 | return_VOID; |
732 | } |
733 | |
734 | AcpiNsDeleteNode (AcpiGbl_RootNode); |
735 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
736 | |
737 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Namespace freed\n" )); |
738 | return_VOID; |
739 | } |
740 | |
741 | |
742 | /******************************************************************************* |
743 | * |
744 | * FUNCTION: AcpiNsOpensScope |
745 | * |
746 | * PARAMETERS: Type - A valid namespace type |
747 | * |
748 | * RETURN: NEWSCOPE if the passed type "opens a name scope" according |
749 | * to the ACPI specification, else 0 |
750 | * |
751 | ******************************************************************************/ |
752 | |
753 | UINT32 |
754 | AcpiNsOpensScope ( |
755 | ACPI_OBJECT_TYPE Type) |
756 | { |
757 | ACPI_FUNCTION_ENTRY (); |
758 | |
759 | |
760 | if (Type > ACPI_TYPE_LOCAL_MAX) |
761 | { |
762 | /* type code out of range */ |
763 | |
764 | ACPI_WARNING ((AE_INFO, "Invalid Object Type 0x%X" , Type)); |
765 | return (ACPI_NS_NORMAL); |
766 | } |
767 | |
768 | return (((UINT32) AcpiGbl_NsProperties[Type]) & ACPI_NS_NEWSCOPE); |
769 | } |
770 | |
771 | |
772 | /******************************************************************************* |
773 | * |
774 | * FUNCTION: AcpiNsGetNodeUnlocked |
775 | * |
776 | * PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The |
777 | * \ (backslash) and ^ (carat) prefixes, and the |
778 | * . (period) to separate segments are supported. |
779 | * PrefixNode - Root of subtree to be searched, or NS_ALL for the |
780 | * root of the name space. If Name is fully |
781 | * qualified (first INT8 is '\'), the passed value |
782 | * of Scope will not be accessed. |
783 | * Flags - Used to indicate whether to perform upsearch or |
784 | * not. |
785 | * ReturnNode - Where the Node is returned |
786 | * |
787 | * DESCRIPTION: Look up a name relative to a given scope and return the |
788 | * corresponding Node. NOTE: Scope can be null. |
789 | * |
790 | * MUTEX: Doesn't locks namespace |
791 | * |
792 | ******************************************************************************/ |
793 | |
794 | ACPI_STATUS |
795 | AcpiNsGetNodeUnlocked ( |
796 | ACPI_NAMESPACE_NODE *PrefixNode, |
797 | const char *Pathname, |
798 | UINT32 Flags, |
799 | ACPI_NAMESPACE_NODE **ReturnNode) |
800 | { |
801 | ACPI_GENERIC_STATE ScopeInfo; |
802 | ACPI_STATUS Status; |
803 | char *InternalPath; |
804 | |
805 | |
806 | ACPI_FUNCTION_TRACE_PTR (NsGetNodeUnlocked, ACPI_CAST_PTR (char, Pathname)); |
807 | |
808 | |
809 | /* Simplest case is a null pathname */ |
810 | |
811 | if (!Pathname) |
812 | { |
813 | *ReturnNode = PrefixNode; |
814 | if (!PrefixNode) |
815 | { |
816 | *ReturnNode = AcpiGbl_RootNode; |
817 | } |
818 | |
819 | return_ACPI_STATUS (AE_OK); |
820 | } |
821 | |
822 | /* Quick check for a reference to the root */ |
823 | |
824 | if (ACPI_IS_ROOT_PREFIX (Pathname[0]) && (!Pathname[1])) |
825 | { |
826 | *ReturnNode = AcpiGbl_RootNode; |
827 | return_ACPI_STATUS (AE_OK); |
828 | } |
829 | |
830 | /* Convert path to internal representation */ |
831 | |
832 | Status = AcpiNsInternalizeName (Pathname, &InternalPath); |
833 | if (ACPI_FAILURE (Status)) |
834 | { |
835 | return_ACPI_STATUS (Status); |
836 | } |
837 | |
838 | /* Setup lookup scope (search starting point) */ |
839 | |
840 | ScopeInfo.Scope.Node = PrefixNode; |
841 | |
842 | /* Lookup the name in the namespace */ |
843 | |
844 | Status = AcpiNsLookup (&ScopeInfo, InternalPath, ACPI_TYPE_ANY, |
845 | ACPI_IMODE_EXECUTE, (Flags | ACPI_NS_DONT_OPEN_SCOPE), |
846 | NULL, ReturnNode); |
847 | if (ACPI_FAILURE (Status)) |
848 | { |
849 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s, %s\n" , |
850 | Pathname, AcpiFormatException (Status))); |
851 | } |
852 | |
853 | ACPI_FREE (InternalPath); |
854 | return_ACPI_STATUS (Status); |
855 | } |
856 | |
857 | |
858 | /******************************************************************************* |
859 | * |
860 | * FUNCTION: AcpiNsGetNode |
861 | * |
862 | * PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The |
863 | * \ (backslash) and ^ (carat) prefixes, and the |
864 | * . (period) to separate segments are supported. |
865 | * PrefixNode - Root of subtree to be searched, or NS_ALL for the |
866 | * root of the name space. If Name is fully |
867 | * qualified (first INT8 is '\'), the passed value |
868 | * of Scope will not be accessed. |
869 | * Flags - Used to indicate whether to perform upsearch or |
870 | * not. |
871 | * ReturnNode - Where the Node is returned |
872 | * |
873 | * DESCRIPTION: Look up a name relative to a given scope and return the |
874 | * corresponding Node. NOTE: Scope can be null. |
875 | * |
876 | * MUTEX: Locks namespace |
877 | * |
878 | ******************************************************************************/ |
879 | |
880 | ACPI_STATUS |
881 | AcpiNsGetNode ( |
882 | ACPI_NAMESPACE_NODE *PrefixNode, |
883 | const char *Pathname, |
884 | UINT32 Flags, |
885 | ACPI_NAMESPACE_NODE **ReturnNode) |
886 | { |
887 | ACPI_STATUS Status; |
888 | |
889 | |
890 | ACPI_FUNCTION_TRACE_PTR (NsGetNode, ACPI_CAST_PTR (char, Pathname)); |
891 | |
892 | |
893 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
894 | if (ACPI_FAILURE (Status)) |
895 | { |
896 | return_ACPI_STATUS (Status); |
897 | } |
898 | |
899 | Status = AcpiNsGetNodeUnlocked (PrefixNode, Pathname, |
900 | Flags, ReturnNode); |
901 | |
902 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
903 | return_ACPI_STATUS (Status); |
904 | } |
905 | |