1 /*******************************************************************************
2 *
3 * Module Name: dmbuffer - AML disassembler, buffer and string support
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 "acutils.h"
155 #include "acdisasm.h"
156 #include "acparser.h"
157 #include "amlcode.h"
158 #include "acinterp.h"
159
160
161 #define _COMPONENT ACPI_CA_DEBUGGER
162 ACPI_MODULE_NAME ("dmbuffer")
163
164 /* Local prototypes */
165
166 static void
167 AcpiDmUuid (
168 ACPI_PARSE_OBJECT *Op);
169
170 static void
171 AcpiDmUnicode (
172 ACPI_PARSE_OBJECT *Op);
173
174 static void
175 AcpiDmGetHardwareIdType (
176 ACPI_PARSE_OBJECT *Op);
177
178 static void
179 AcpiDmPldBuffer (
180 UINT32 Level,
181 UINT8 *ByteData,
182 UINT32 ByteCount);
183
184 static const char *
185 AcpiDmFindNameByIndex (
186 UINT64 Index,
187 const char **List);
188
189
190 #define ACPI_BUFFER_BYTES_PER_LINE 8
191
192
193 /*******************************************************************************
194 *
195 * FUNCTION: AcpiDmDisasmByteList
196 *
197 * PARAMETERS: Level - Current source code indentation level
198 * ByteData - Pointer to the byte list
199 * ByteCount - Length of the byte list
200 *
201 * RETURN: None
202 *
203 * DESCRIPTION: Dump an AML "ByteList" in Hex format. 8 bytes per line, prefixed
204 * with the hex buffer offset.
205 *
206 ******************************************************************************/
207
208 void
AcpiDmDisasmByteList(UINT32 Level,UINT8 * ByteData,UINT32 ByteCount)209 AcpiDmDisasmByteList (
210 UINT32 Level,
211 UINT8 *ByteData,
212 UINT32 ByteCount)
213 {
214 UINT32 i;
215 UINT32 j;
216 UINT32 CurrentIndex;
217 UINT8 BufChar;
218
219
220 if (!ByteCount)
221 {
222 return;
223 }
224
225 for (i = 0; i < ByteCount; i += ACPI_BUFFER_BYTES_PER_LINE)
226 {
227 /* Line indent and offset prefix for each new line */
228
229 AcpiDmIndent (Level);
230 if (ByteCount > ACPI_BUFFER_BYTES_PER_LINE)
231 {
232 AcpiOsPrintf ("/* %04X */ ", i);
233 }
234
235 /* Dump the actual hex values */
236
237 for (j = 0; j < ACPI_BUFFER_BYTES_PER_LINE; j++)
238 {
239 CurrentIndex = i + j;
240 if (CurrentIndex >= ByteCount)
241 {
242 /* Dump fill spaces */
243
244 AcpiOsPrintf (" ");
245 continue;
246 }
247
248 AcpiOsPrintf (" 0x%2.2X", ByteData[CurrentIndex]);
249
250 /* Add comma if there are more bytes to display */
251
252 if (CurrentIndex < (ByteCount - 1))
253 {
254 AcpiOsPrintf (",");
255 }
256 else
257 {
258 AcpiOsPrintf (" ");
259 }
260 }
261
262 /* Dump the ASCII equivalents within a comment */
263
264 AcpiOsPrintf (" // ");
265 for (j = 0; j < ACPI_BUFFER_BYTES_PER_LINE; j++)
266 {
267 CurrentIndex = i + j;
268 if (CurrentIndex >= ByteCount)
269 {
270 break;
271 }
272
273 BufChar = ByteData[CurrentIndex];
274 if (isprint (BufChar))
275 {
276 AcpiOsPrintf ("%c", BufChar);
277 }
278 else
279 {
280 AcpiOsPrintf (".");
281 }
282 }
283
284 /* Finished with this line */
285
286 AcpiOsPrintf ("\n");
287 }
288 }
289
290
291 /*******************************************************************************
292 *
293 * FUNCTION: AcpiDmByteList
294 *
295 * PARAMETERS: Info - Parse tree walk info
296 * Op - Byte list op
297 *
298 * RETURN: None
299 *
300 * DESCRIPTION: Dump a buffer byte list, handling the various types of buffers.
301 * Buffer type must be already set in the Op DisasmOpcode.
302 *
303 ******************************************************************************/
304
305 void
AcpiDmByteList(ACPI_OP_WALK_INFO * Info,ACPI_PARSE_OBJECT * Op)306 AcpiDmByteList (
307 ACPI_OP_WALK_INFO *Info,
308 ACPI_PARSE_OBJECT *Op)
309 {
310 UINT8 *ByteData;
311 UINT32 ByteCount;
312
313
314 ByteData = Op->Named.Data;
315 ByteCount = (UINT32) Op->Common.Value.Integer;
316
317 /*
318 * The byte list belongs to a buffer, and can be produced by either
319 * a ResourceTemplate, Unicode, quoted string, or a plain byte list.
320 */
321 switch (Op->Common.Parent->Common.DisasmOpcode)
322 {
323 case ACPI_DASM_RESOURCE:
324
325 AcpiDmResourceTemplate (
326 Info, Op->Common.Parent, ByteData, ByteCount);
327 break;
328
329 case ACPI_DASM_STRING:
330
331 AcpiDmIndent (Info->Level);
332 AcpiUtPrintString ((char *) ByteData, ACPI_UINT16_MAX);
333 AcpiOsPrintf ("\n");
334 break;
335
336 case ACPI_DASM_UUID:
337
338 AcpiDmUuid (Op);
339 break;
340
341 case ACPI_DASM_UNICODE:
342
343 AcpiDmUnicode (Op);
344 break;
345
346 case ACPI_DASM_PLD_METHOD:
347 #if 0
348 AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount);
349 #endif
350 AcpiDmPldBuffer (Info->Level, ByteData, ByteCount);
351 break;
352
353 case ACPI_DASM_BUFFER:
354 default:
355 /*
356 * Not a resource, string, or unicode string.
357 * Just dump the buffer
358 */
359 AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount);
360 break;
361 }
362 }
363
364
365 /*******************************************************************************
366 *
367 * FUNCTION: AcpiDmIsUuidBuffer
368 *
369 * PARAMETERS: Op - Buffer Object to be examined
370 *
371 * RETURN: TRUE if buffer contains a UUID
372 *
373 * DESCRIPTION: Determine if a buffer Op contains a UUID
374 *
375 * To help determine whether the buffer is a UUID versus a raw data buffer,
376 * there a are a couple bytes we can look at:
377 *
378 * xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx
379 *
380 * The variant covered by the UUID specification is indicated by the two most
381 * significant bits of N being 1 0 (i.e., the hexadecimal N will always be
382 * 8, 9, A, or B).
383 *
384 * The variant covered by the UUID specification has five versions. For this
385 * variant, the four bits of M indicates the UUID version (i.e., the
386 * hexadecimal M will be either 1, 2, 3, 4, or 5).
387 *
388 ******************************************************************************/
389
390 BOOLEAN
AcpiDmIsUuidBuffer(ACPI_PARSE_OBJECT * Op)391 AcpiDmIsUuidBuffer (
392 ACPI_PARSE_OBJECT *Op)
393 {
394 UINT8 *ByteData;
395 UINT32 ByteCount;
396 ACPI_PARSE_OBJECT *SizeOp;
397 ACPI_PARSE_OBJECT *NextOp;
398
399
400 /* Buffer size is the buffer argument */
401
402 SizeOp = Op->Common.Value.Arg;
403 if (!SizeOp)
404 {
405 return (FALSE);
406 }
407
408 /* Next, the initializer byte list to examine */
409
410 NextOp = SizeOp->Common.Next;
411 if (!NextOp)
412 {
413 return (FALSE);
414 }
415
416 /* Extract the byte list info */
417
418 ByteData = NextOp->Named.Data;
419 ByteCount = (UINT32) NextOp->Common.Value.Integer;
420
421 /* Byte count must be exactly 16 */
422
423 if (ByteCount != UUID_BUFFER_LENGTH)
424 {
425 return (FALSE);
426 }
427
428 /* Check for valid "M" and "N" values (see function header above) */
429
430 if (((ByteData[7] & 0xF0) == 0x00) || /* M={1,2,3,4,5} */
431 ((ByteData[7] & 0xF0) > 0x50) ||
432 ((ByteData[8] & 0xF0) < 0x80) || /* N={8,9,A,B} */
433 ((ByteData[8] & 0xF0) > 0xB0))
434 {
435 return (FALSE);
436 }
437
438 /* Ignore the Size argument in the disassembly of this buffer op */
439
440 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
441 return (TRUE);
442 }
443
444
445 /*******************************************************************************
446 *
447 * FUNCTION: AcpiDmUuid
448 *
449 * PARAMETERS: Op - Byte List op containing a UUID
450 *
451 * RETURN: None
452 *
453 * DESCRIPTION: Dump a buffer containing a UUID as a standard ASCII string.
454 *
455 * Output Format:
456 * In its canonical form, the UUID is represented by a string containing 32
457 * lowercase hexadecimal digits, displayed in 5 groups separated by hyphens.
458 * The complete form is 8-4-4-4-12 for a total of 36 characters (32
459 * alphanumeric characters representing hex digits and 4 hyphens). In bytes,
460 * 4-2-2-2-6. Example:
461 *
462 * ToUUID ("107ededd-d381-4fd7-8da9-08e9a6c79644")
463 *
464 ******************************************************************************/
465
466 static void
AcpiDmUuid(ACPI_PARSE_OBJECT * Op)467 AcpiDmUuid (
468 ACPI_PARSE_OBJECT *Op)
469 {
470 UINT8 *Data;
471 const char *Description;
472
473
474 Data = ACPI_CAST_PTR (UINT8, Op->Named.Data);
475
476 /* Emit the 36-byte UUID string in the proper format/order */
477
478 AcpiOsPrintf (
479 "\"%2.2x%2.2x%2.2x%2.2x-"
480 "%2.2x%2.2x-"
481 "%2.2x%2.2x-"
482 "%2.2x%2.2x-"
483 "%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\")",
484 Data[3], Data[2], Data[1], Data[0],
485 Data[5], Data[4],
486 Data[7], Data[6],
487 Data[8], Data[9],
488 Data[10], Data[11], Data[12], Data[13], Data[14], Data[15]);
489
490 /* Dump the UUID description string if available */
491
492 Description = AcpiAhMatchUuid (Data);
493 if (Description)
494 {
495 AcpiOsPrintf (" /* %s */", Description);
496 }
497 else
498 {
499 AcpiOsPrintf (" /* Unknown UUID */");
500 }
501 }
502
503
504 /*******************************************************************************
505 *
506 * FUNCTION: AcpiDmIsUnicodeBuffer
507 *
508 * PARAMETERS: Op - Buffer Object to be examined
509 *
510 * RETURN: TRUE if buffer contains a UNICODE string
511 *
512 * DESCRIPTION: Determine if a buffer Op contains a Unicode string
513 *
514 ******************************************************************************/
515
516 BOOLEAN
AcpiDmIsUnicodeBuffer(ACPI_PARSE_OBJECT * Op)517 AcpiDmIsUnicodeBuffer (
518 ACPI_PARSE_OBJECT *Op)
519 {
520 UINT8 *ByteData;
521 UINT32 ByteCount;
522 UINT32 WordCount;
523 ACPI_PARSE_OBJECT *SizeOp;
524 ACPI_PARSE_OBJECT *NextOp;
525 UINT32 i;
526
527
528 /* Buffer size is the buffer argument */
529
530 SizeOp = Op->Common.Value.Arg;
531 if (!SizeOp)
532 {
533 return (FALSE);
534 }
535
536 /* Next, the initializer byte list to examine */
537
538 NextOp = SizeOp->Common.Next;
539 if (!NextOp)
540 {
541 return (FALSE);
542 }
543
544 /* Extract the byte list info */
545
546 ByteData = NextOp->Named.Data;
547 ByteCount = (UINT32) NextOp->Common.Value.Integer;
548 WordCount = ACPI_DIV_2 (ByteCount);
549
550 /*
551 * Unicode string must have an even number of bytes and last
552 * word must be zero
553 */
554 if ((!ByteCount) ||
555 (ByteCount < 4) ||
556 (ByteCount & 1) ||
557 ((UINT16 *) (void *) ByteData)[WordCount - 1] != 0)
558 {
559 return (FALSE);
560 }
561
562 /*
563 * For each word, 1st byte must be printable ascii, and the
564 * 2nd byte must be zero. This does not allow for escape
565 * sequences, but it is the most secure way to detect a
566 * unicode string.
567 */
568 for (i = 0; i < (ByteCount - 2); i += 2)
569 {
570 if ((ByteData[i] == 0) ||
571 !(isprint (ByteData[i])) ||
572 (ByteData[(ACPI_SIZE) i + 1] != 0))
573 {
574 return (FALSE);
575 }
576 }
577
578 /* Ignore the Size argument in the disassembly of this buffer op */
579
580 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
581 return (TRUE);
582 }
583
584
585 /*******************************************************************************
586 *
587 * FUNCTION: AcpiDmIsStringBuffer
588 *
589 * PARAMETERS: Op - Buffer Object to be examined
590 *
591 * RETURN: TRUE if buffer contains a ASCII string, FALSE otherwise
592 *
593 * DESCRIPTION: Determine if a buffer Op contains a ASCII string
594 *
595 ******************************************************************************/
596
597 BOOLEAN
AcpiDmIsStringBuffer(ACPI_PARSE_OBJECT * Op)598 AcpiDmIsStringBuffer (
599 ACPI_PARSE_OBJECT *Op)
600 {
601 UINT8 *ByteData;
602 UINT32 ByteCount;
603 ACPI_PARSE_OBJECT *SizeOp;
604 ACPI_PARSE_OBJECT *NextOp;
605 UINT32 i;
606
607
608 /* Buffer size is the buffer argument */
609
610 SizeOp = Op->Common.Value.Arg;
611 if (!SizeOp)
612 {
613 return (FALSE);
614 }
615
616 /* Next, the initializer byte list to examine */
617
618 NextOp = SizeOp->Common.Next;
619 if (!NextOp)
620 {
621 return (FALSE);
622 }
623
624 /* Extract the byte list info */
625
626 ByteData = NextOp->Named.Data;
627 ByteCount = (UINT32) NextOp->Common.Value.Integer;
628
629 /* Last byte must be the null terminator */
630
631 if ((!ByteCount) ||
632 (ByteCount < 2) ||
633 (ByteData[ByteCount-1] != 0))
634 {
635 return (FALSE);
636 }
637
638 /*
639 * Check for a possible standalone resource EndTag, ignore it
640 * here. However, this sequence is also the string "Y", but
641 * this seems rare enough to be acceptable.
642 */
643 if ((ByteCount == 2) && (ByteData[0] == 0x79))
644 {
645 return (FALSE);
646 }
647
648 /* Check all bytes for ASCII */
649
650 for (i = 0; i < (ByteCount - 1); i++)
651 {
652 /*
653 * TBD: allow some escapes (non-ascii chars).
654 * they will be handled in the string output routine
655 */
656
657 /* Not a string if not printable ascii */
658
659 if (!isprint (ByteData[i]))
660 {
661 return (FALSE);
662 }
663 }
664
665 return (TRUE);
666 }
667
668
669 /*******************************************************************************
670 *
671 * FUNCTION: AcpiDmIsPldBuffer
672 *
673 * PARAMETERS: Op - Buffer Object to be examined
674 *
675 * RETURN: TRUE if buffer appears to contain data produced via the
676 * ToPLD macro, FALSE otherwise
677 *
678 * DESCRIPTION: Determine if a buffer Op contains a _PLD structure
679 *
680 ******************************************************************************/
681
682 BOOLEAN
AcpiDmIsPldBuffer(ACPI_PARSE_OBJECT * Op)683 AcpiDmIsPldBuffer (
684 ACPI_PARSE_OBJECT *Op)
685 {
686 ACPI_NAMESPACE_NODE *Node;
687 ACPI_PARSE_OBJECT *SizeOp;
688 ACPI_PARSE_OBJECT *ByteListOp;
689 ACPI_PARSE_OBJECT *ParentOp;
690 UINT64 BufferSize;
691 UINT64 InitializerSize;
692
693
694 if (!Op)
695 {
696 return (FALSE);
697 }
698
699 /*
700 * Get the BufferSize argument - Buffer(BufferSize)
701 * If the buffer was generated by the ToPld macro, it must
702 * be a BYTE constant.
703 */
704 SizeOp = Op->Common.Value.Arg;
705 if (!SizeOp || SizeOp->Common.AmlOpcode != AML_BYTE_OP)
706 {
707 return (FALSE);
708 }
709
710 /* Check the declared BufferSize, two possibilities */
711
712 BufferSize = SizeOp->Common.Value.Integer;
713 if ((BufferSize != ACPI_PLD_REV1_BUFFER_SIZE) &&
714 (BufferSize != ACPI_PLD_REV2_BUFFER_SIZE))
715 {
716 return (FALSE);
717 }
718
719 /*
720 * Check the initializer list length. This is the actual
721 * number of bytes in the buffer as counted by the AML parser.
722 * The declared BufferSize can be larger than the actual length.
723 * However, for the ToPLD macro, the BufferSize will be the same
724 * as the initializer list length.
725 */
726 ByteListOp = SizeOp->Common.Next;
727 if (!ByteListOp)
728 {
729 return (FALSE); /* Zero-length buffer case */
730 }
731
732 InitializerSize = ByteListOp->Common.Value.Integer;
733 if ((InitializerSize != ACPI_PLD_REV1_BUFFER_SIZE) &&
734 (InitializerSize != ACPI_PLD_REV2_BUFFER_SIZE))
735 {
736 return (FALSE);
737 }
738
739 /* Final size check */
740
741 if (BufferSize != InitializerSize)
742 {
743 return (FALSE);
744 }
745
746 /* Now examine the buffer parent */
747
748 ParentOp = Op->Common.Parent;
749 if (!ParentOp)
750 {
751 return (FALSE);
752 }
753
754 /* Check for form: Name(_PLD, Buffer() {}). Not legal, however */
755
756 if (ParentOp->Common.AmlOpcode == AML_NAME_OP)
757 {
758 Node = ParentOp->Common.Node;
759
760 if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, METHOD_NAME__PLD))
761 {
762 /* Ignore the Size argument in the disassembly of this buffer op */
763
764 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
765 return (TRUE);
766 }
767
768 return (FALSE);
769 }
770
771 /*
772 * Check for proper form: Name(_PLD, Package() {ToPLD()})
773 *
774 * Note: All other forms such as
775 * Return (Package() {ToPLD()})
776 * Local0 = ToPLD()
777 * etc. are not converted back to the ToPLD macro, because
778 * there is really no deterministic way to disassemble the buffer
779 * back to the ToPLD macro, other than trying to find the "_PLD"
780 * name
781 */
782 if (ParentOp->Common.AmlOpcode == AML_PACKAGE_OP)
783 {
784 ParentOp = ParentOp->Common.Parent;
785 if (!ParentOp)
786 {
787 return (FALSE);
788 }
789
790 if (ParentOp->Common.AmlOpcode == AML_NAME_OP)
791 {
792 Node = ParentOp->Common.Node;
793
794 if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, METHOD_NAME__PLD))
795 {
796 /* Ignore the Size argument in the disassembly of this buffer op */
797
798 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
799 return (TRUE);
800 }
801 }
802 }
803
804 return (FALSE);
805 }
806
807
808 /*******************************************************************************
809 *
810 * FUNCTION: AcpiDmFindNameByIndex
811 *
812 * PARAMETERS: Index - Index of array to check
813 * List - Array to reference
814 *
815 * RETURN: String from List or empty string
816 *
817 * DESCRIPTION: Finds and returns the char string located at the given index
818 * position in List.
819 *
820 ******************************************************************************/
821
822 static const char *
AcpiDmFindNameByIndex(UINT64 Index,const char ** List)823 AcpiDmFindNameByIndex (
824 UINT64 Index,
825 const char **List)
826 {
827 const char *NameString;
828 UINT32 i;
829
830
831 /* Bounds check */
832
833 NameString = List[0];
834 i = 0;
835
836 while (NameString)
837 {
838 i++;
839 NameString = List[i];
840 }
841
842 if (Index >= i)
843 {
844 /* TBD: Add error msg */
845
846 return ("");
847 }
848
849 return (List[Index]);
850 }
851
852
853 /*******************************************************************************
854 *
855 * FUNCTION: AcpiDmPldBuffer
856 *
857 * PARAMETERS: Level - Current source code indentation level
858 * ByteData - Pointer to the byte list
859 * ByteCount - Length of the byte list
860 *
861 * RETURN: None
862 *
863 * DESCRIPTION: Dump and format the contents of a _PLD buffer object
864 *
865 ******************************************************************************/
866
867 #define ACPI_PLD_OUTPUT08 "%*.s%-22s = 0x%X,\n", ACPI_MUL_4 (Level), " "
868 #define ACPI_PLD_OUTPUT08P "%*.s%-22s = 0x%X)\n", ACPI_MUL_4 (Level), " "
869 #define ACPI_PLD_OUTPUT16 "%*.s%-22s = 0x%X,\n", ACPI_MUL_4 (Level), " "
870 #define ACPI_PLD_OUTPUT16P "%*.s%-22s = 0x%X)\n", ACPI_MUL_4 (Level), " "
871 #define ACPI_PLD_OUTPUT24 "%*.s%-22s = 0x%X,\n", ACPI_MUL_4 (Level), " "
872 #define ACPI_PLD_OUTPUTSTR "%*.s%-22s = \"%s\",\n", ACPI_MUL_4 (Level), " "
873
874 static void
AcpiDmPldBuffer(UINT32 Level,UINT8 * ByteData,UINT32 ByteCount)875 AcpiDmPldBuffer (
876 UINT32 Level,
877 UINT8 *ByteData,
878 UINT32 ByteCount)
879 {
880 ACPI_PLD_INFO *PldInfo;
881 ACPI_STATUS Status;
882
883
884 /* Check for valid byte count */
885
886 if (ByteCount < ACPI_PLD_REV1_BUFFER_SIZE)
887 {
888 return;
889 }
890
891 /* Convert _PLD buffer to local _PLD struct */
892
893 Status = AcpiDecodePldBuffer (ByteData, ByteCount, &PldInfo);
894 if (ACPI_FAILURE (Status))
895 {
896 return;
897 }
898
899 AcpiOsPrintf ("\n");
900
901 /* First 32-bit dword */
902
903 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Revision", PldInfo->Revision);
904 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_IgnoreColor", PldInfo->IgnoreColor);
905 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Red", PldInfo->Red);
906 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Green", PldInfo->Green);
907 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Blue", PldInfo->Blue);
908
909 /* Second 32-bit dword */
910
911 AcpiOsPrintf (ACPI_PLD_OUTPUT16, "PLD_Width", PldInfo->Width);
912 AcpiOsPrintf (ACPI_PLD_OUTPUT16, "PLD_Height", PldInfo->Height);
913
914 /* Third 32-bit dword */
915
916 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_UserVisible", PldInfo->UserVisible);
917 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Dock", PldInfo->Dock);
918 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Lid", PldInfo->Lid);
919 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_Panel",
920 AcpiDmFindNameByIndex(PldInfo->Panel, AcpiGbl_PldPanelList));
921
922 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_VerticalPosition",
923 AcpiDmFindNameByIndex(PldInfo->VerticalPosition, AcpiGbl_PldVerticalPositionList));
924
925 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_HorizontalPosition",
926 AcpiDmFindNameByIndex(PldInfo->HorizontalPosition, AcpiGbl_PldHorizontalPositionList));
927
928 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_Shape",
929 AcpiDmFindNameByIndex(PldInfo->Shape, AcpiGbl_PldShapeList));
930 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_GroupOrientation", PldInfo->GroupOrientation);
931
932 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_GroupToken", PldInfo->GroupToken);
933 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_GroupPosition", PldInfo->GroupPosition);
934 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Bay", PldInfo->Bay);
935
936 /* Fourth 32-bit dword */
937
938 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Ejectable", PldInfo->Ejectable);
939 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_EjectRequired", PldInfo->OspmEjectRequired);
940 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_CabinetNumber", PldInfo->CabinetNumber);
941 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_CardCageNumber", PldInfo->CardCageNumber);
942 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Reference", PldInfo->Reference);
943 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Rotation", PldInfo->Rotation);
944
945 if (ByteCount >= ACPI_PLD_REV2_BUFFER_SIZE)
946 {
947 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Order", PldInfo->Order);
948
949 /* Fifth 32-bit dword */
950
951 AcpiOsPrintf (ACPI_PLD_OUTPUT16, "PLD_VerticalOffset", PldInfo->VerticalOffset);
952 AcpiOsPrintf (ACPI_PLD_OUTPUT16P, "PLD_HorizontalOffset", PldInfo->HorizontalOffset);
953 }
954 else /* Rev 1 buffer */
955 {
956 AcpiOsPrintf (ACPI_PLD_OUTPUT08P, "PLD_Order", PldInfo->Order);
957 }
958
959 ACPI_FREE (PldInfo);
960 }
961
962
963 /*******************************************************************************
964 *
965 * FUNCTION: AcpiDmUnicode
966 *
967 * PARAMETERS: Op - Byte List op containing Unicode string
968 *
969 * RETURN: None
970 *
971 * DESCRIPTION: Dump Unicode string as a standard ASCII string. (Remove
972 * the extra zero bytes).
973 *
974 ******************************************************************************/
975
976 static void
AcpiDmUnicode(ACPI_PARSE_OBJECT * Op)977 AcpiDmUnicode (
978 ACPI_PARSE_OBJECT *Op)
979 {
980 UINT16 *WordData;
981 UINT32 WordCount;
982 UINT32 i;
983 int OutputValue;
984
985
986 /* Extract the buffer info as a WORD buffer */
987
988 WordData = ACPI_CAST_PTR (UINT16, Op->Named.Data);
989 WordCount = ACPI_DIV_2 (((UINT32) Op->Common.Value.Integer));
990
991 /* Write every other byte as an ASCII character */
992
993 AcpiOsPrintf ("\"");
994 for (i = 0; i < (WordCount - 1); i++)
995 {
996 OutputValue = (int) WordData[i];
997
998 /* Handle values that must be escaped */
999
1000 if ((OutputValue == '\"') ||
1001 (OutputValue == '\\'))
1002 {
1003 AcpiOsPrintf ("\\%c", OutputValue);
1004 }
1005 else if (!isprint (OutputValue))
1006 {
1007 AcpiOsPrintf ("\\x%2.2X", OutputValue);
1008 }
1009 else
1010 {
1011 AcpiOsPrintf ("%c", OutputValue);
1012 }
1013 }
1014
1015 AcpiOsPrintf ("\")");
1016 }
1017
1018
1019 /*******************************************************************************
1020 *
1021 * FUNCTION: AcpiDmGetHardwareIdType
1022 *
1023 * PARAMETERS: Op - Op to be examined
1024 *
1025 * RETURN: None
1026 *
1027 * DESCRIPTION: Determine the type of the argument to a _HID or _CID
1028 * 1) Strings are allowed
1029 * 2) If Integer, determine if it is a valid EISAID
1030 *
1031 ******************************************************************************/
1032
1033 static void
AcpiDmGetHardwareIdType(ACPI_PARSE_OBJECT * Op)1034 AcpiDmGetHardwareIdType (
1035 ACPI_PARSE_OBJECT *Op)
1036 {
1037 UINT32 BigEndianId;
1038 UINT32 Prefix[3];
1039 UINT32 i;
1040
1041
1042 switch (Op->Common.AmlOpcode)
1043 {
1044 case AML_STRING_OP:
1045
1046 /* Mark this string as an _HID/_CID string */
1047
1048 Op->Common.DisasmOpcode = ACPI_DASM_HID_STRING;
1049 break;
1050
1051 case AML_WORD_OP:
1052 case AML_DWORD_OP:
1053
1054 /* Determine if a Word/Dword is a valid encoded EISAID */
1055
1056 /* Swap from little-endian to big-endian to simplify conversion */
1057
1058 BigEndianId = AcpiUtDwordByteSwap ((UINT32) Op->Common.Value.Integer);
1059
1060 /* Create the 3 leading ASCII letters */
1061
1062 Prefix[0] = ((BigEndianId >> 26) & 0x1F) + 0x40;
1063 Prefix[1] = ((BigEndianId >> 21) & 0x1F) + 0x40;
1064 Prefix[2] = ((BigEndianId >> 16) & 0x1F) + 0x40;
1065
1066 /* Verify that all 3 are ascii and alpha */
1067
1068 for (i = 0; i < 3; i++)
1069 {
1070 if (!ACPI_IS_ASCII (Prefix[i]) ||
1071 !isalpha (Prefix[i]))
1072 {
1073 return;
1074 }
1075 }
1076
1077 /* Mark this node as convertible to an EISA ID string */
1078
1079 Op->Common.DisasmOpcode = ACPI_DASM_EISAID;
1080 break;
1081
1082 default:
1083 break;
1084 }
1085 }
1086
1087
1088 /*******************************************************************************
1089 *
1090 * FUNCTION: AcpiDmCheckForHardwareId
1091 *
1092 * PARAMETERS: Op - Op to be examined
1093 *
1094 * RETURN: None
1095 *
1096 * DESCRIPTION: Determine if a Name() Op is a _HID/_CID.
1097 *
1098 ******************************************************************************/
1099
1100 void
AcpiDmCheckForHardwareId(ACPI_PARSE_OBJECT * Op)1101 AcpiDmCheckForHardwareId (
1102 ACPI_PARSE_OBJECT *Op)
1103 {
1104 UINT32 Name;
1105 ACPI_PARSE_OBJECT *NextOp;
1106
1107
1108 /* Get the NameSegment */
1109
1110 Name = AcpiPsGetName (Op);
1111 if (!Name)
1112 {
1113 return;
1114 }
1115
1116 NextOp = AcpiPsGetDepthNext (NULL, Op);
1117 if (!NextOp)
1118 {
1119 return;
1120 }
1121
1122 /* Check for _HID - has one argument */
1123
1124 if (ACPI_COMPARE_NAMESEG (&Name, METHOD_NAME__HID))
1125 {
1126 AcpiDmGetHardwareIdType (NextOp);
1127 return;
1128 }
1129
1130 /* Exit if not _CID */
1131
1132 if (!ACPI_COMPARE_NAMESEG (&Name, METHOD_NAME__CID))
1133 {
1134 return;
1135 }
1136
1137 /* _CID can contain a single argument or a package */
1138
1139 if (NextOp->Common.AmlOpcode != AML_PACKAGE_OP)
1140 {
1141 AcpiDmGetHardwareIdType (NextOp);
1142 return;
1143 }
1144
1145 /* _CID with Package: get the package length, check all elements */
1146
1147 NextOp = AcpiPsGetDepthNext (NULL, NextOp);
1148 if (!NextOp)
1149 {
1150 return;
1151 }
1152
1153 /* Don't need to use the length, just walk the peer list */
1154
1155 NextOp = NextOp->Common.Next;
1156 while (NextOp)
1157 {
1158 AcpiDmGetHardwareIdType (NextOp);
1159 NextOp = NextOp->Common.Next;
1160 }
1161 }
1162
1163
1164 /*******************************************************************************
1165 *
1166 * FUNCTION: AcpiDmDecompressEisaId
1167 *
1168 * PARAMETERS: EncodedId - Raw encoded EISA ID.
1169 *
1170 * RETURN: None
1171 *
1172 * DESCRIPTION: Convert an encoded EISAID back to the original ASCII String
1173 * and emit the correct ASL statement. If the ID is known, emit
1174 * a description of the ID as a comment.
1175 *
1176 ******************************************************************************/
1177
1178 void
AcpiDmDecompressEisaId(UINT32 EncodedId)1179 AcpiDmDecompressEisaId (
1180 UINT32 EncodedId)
1181 {
1182 char IdBuffer[ACPI_EISAID_STRING_SIZE];
1183 const AH_DEVICE_ID *Info;
1184
1185
1186 /* Convert EISAID to a string an emit the statement */
1187
1188 AcpiExEisaIdToString (IdBuffer, EncodedId);
1189 AcpiOsPrintf ("EisaId (\"%s\")", IdBuffer);
1190
1191 /* If we know about the ID, emit the description */
1192
1193 Info = AcpiAhMatchHardwareId (IdBuffer);
1194 if (Info)
1195 {
1196 AcpiOsPrintf (" /* %s */", Info->Description);
1197 }
1198 }
1199
