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1/*␊
2Copyright (c) 2010, Intel Corporation␊
3All rights reserved.␊
4␊
5Redistribution and use in source and binary forms, with or without␊
6modification, are permitted provided that the following conditions are met:␊
7␊
8 * Redistributions of source code must retain the above copyright notice,␊
9 this list of conditions and the following disclaimer.␊
10 * Redistributions in binary form must reproduce the above copyright notice,␊
11 this list of conditions and the following disclaimer in the documentation␊
12 and/or other materials provided with the distribution.␊
13 * Neither the name of Intel Corporation nor the names of its contributors␊
14 may be used to endorse or promote products derived from this software␊
15 without specific prior written permission.␊
16␊
17THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND␊
18ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED␊
19WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE␊
20DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR␊
21ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES␊
22(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;␊
23LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON␊
24ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊
25(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS␊
26SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊
27*/␊
28␊
29#include "acpi.h"␊
30#include "acpidecode.h"␊
31␊
32#define DEBUG_ACPI_DECODE 0␊
33␊
34#if DEBUG_ACPI_DECODE==1␊
35#include "libsaio.h"␊
36#define DBG(x...) printf(x)␊
37#else␊
38#define DBG(x...)␊
39#endif␊
40␊
41static U8 *parse_acpi_dataobject(const struct acpi_namespace *ns, U8 * current, U8 * end);␊
42static U8 *parse_acpi_package(const struct acpi_namespace *ns, U8 * current, U8 * end);␊
43static U8 *parse_acpi_termarg(const struct acpi_namespace *ns, U8 * current, U8 * end);␊
44static U8 *parse_acpi_termarglist(const struct acpi_namespace *ns, U8 * current, U8 * end);␊
45static U8 *parse_acpi_objectlist(const struct acpi_namespace *ns, U8 * current, U8 * end);␊
46U8* UIDPointer = (U8*)0;␊
47␊
48void *decodeTableHeader(void *current, ACPI_TABLE_HEADER ** tableHeader)␊
49{␊
50 *tableHeader = current;␊
51 current = *tableHeader + 1;␊
52 return current;␊
53}␊
54void dprint_nameseg(U32 i)␊
55{␊
56 DBG("%c%c%c%c",␊
57 (int)(i & 0x000000ff),␊
58 (int)((i & 0x0000ff00) >> 8),␊
59 (int)((i & 0x00ff0000) >> 16),␊
60 (int)(i >> 24));␊
61}␊
62␊
63#if DEBUG_ACPI_DECODE␊
64static void dprint_namespace(const struct acpi_namespace *ns)␊
65{␊
66 U32 i;␊
67 DBG( "\\");␊
68 for (i = 0; i < ns->depth; i++) {␊
69 if (i != 0)␊
70 DBG( ".");␊
71 dprint_nameseg(ns->nameseg[i]);␊
72 }␊
73}␊
74#endif␊
75␊
76static void parsePackageLength(U8 * current, U32 * length, U32 * lengthEncoding)␊
77{␊
78 U32 i;␊
79 U8 len0 = *current;␊
80 U8 numBytes = len0 >> 6;␊
81 U32 total = 0;␊
82␊
83 for (i = numBytes; i > 0; i--) {␊
84 total <<= 8;␊
85 total |= current[i];␊
86 }␊
87␊
88 total <<= 4;␊
89 total |= len0 & 0x3f;␊
90 *length = total;␊
91 *lengthEncoding = numBytes + 1;␊
92 DBG("Package length=0x%02x\n", *length);␊
93}␊
94␊
95static bool ns_match(struct acpi_namespace *ns1, struct acpi_namespace *ns2)␊
96{␊
97 U32 i;␊
98 if (ns1->depth != ns2->depth)␊
99 return false;␊
100␊
101 for (i = 0; i < ns1->depth; i++)␊
102 if (ns1->nameseg[i] != ns2->nameseg[i])␊
103 return false;␊
104␊
105 return true;␊
106}␊
107␊
108U32 acpi_ns_found;␊
109␊
110static U8 *parse_acpi_namestring(const struct acpi_namespace *ns_context, struct acpi_namespace *ns, U8 * current, U8 * end)␊
111{␊
112 U8 *temp = current;␊
113 struct acpi_namespace dummy_ns;␊
114␊
115 (void)end;␊
116␊
117 if (!ns)␊
118 ns = &dummy_ns;␊
119 *ns = *ns_context;␊
120␊
121 if (*current == AML_ROOT_PREFIX) {␊
122 ns->depth = 0;␊
123 current++;␊
124 } else␊
125 while (*current == AML_PARENT_PREFIX) {␊
126 if (ns->depth == 0) {␊
127 DBG( "Attempt to use parent prefix with no namespace left\n");␊
128 return temp;␊
129 }␊
130 current++;␊
131 ns->depth--;␊
132 }␊
133␊
134 switch (*current) {␊
135 case AML_DUAL_NAME_PREFIX:␊
136 if (ns->depth + 2 > ACPI_NAMESPACE_MAX_DEPTH) {␊
137 DBG( "Namespace got too deep\n");␊
138 return temp;␊
139 }␊
140 current++;␊
141 ns->nameseg[ns->depth++] = *(U32 *) current;␊
142 current += 4;␊
143 ns->nameseg[ns->depth++] = *(U32 *) current;␊
144 current += 4;␊
145 break;␊
146 case AML_MULTI_NAME_PREFIX:␊
147 {␊
148 U8 nameseg_count;␊
149 current++;␊
150 nameseg_count = *current++;␊
151 if (ns->depth + nameseg_count > ACPI_NAMESPACE_MAX_DEPTH) {␊
152 DBG( "Namespace got too deep\n");␊
153 return temp;␊
154 }␊
155 while (nameseg_count--) {␊
156 ns->nameseg[ns->depth++] = *(U32 *) current;␊
157 current += 4;␊
158 }␊
159 break;␊
160 }␊
161 case AML_NULL_NAME:␊
162 current++;␊
163 break;␊
164 default:␊
165 if (*current != '_' && (*current < 'A' || *current > 'Z')) {␊
166 DBG( "Invalid nameseg lead character: 0x%02x\n", *current);␊
167 return temp;␊
168 }␊
169 if (ns->depth + 1 > ACPI_NAMESPACE_MAX_DEPTH) {␊
170 DBG( "Namespace got too deep\n");␊
171 return temp;␊
172 }␊
173 ns->nameseg[ns->depth++] = *(U32 *) current;␊
174 current += 4;␊
175 break;␊
176 }␊
177#if DEBUG_ACPI_DECODE␊
178 DBG( "Found NameString: ");␊
179 dprint_namespace(ns);␊
180 DBG("\n");␊
181#endif␊
182␉if (ns->nameseg[1] == NAMESEG("PCI0") && ns->nameseg[2] == NAMESEG("_UID")) {␊
183␉␉UIDPointer = current;␊
184␉}␊
185␉␊
186 if (!acpi_ns_found) {␊
187 U32 index;␊
188␊
189 for (index = 0; index < acpi_processor_count; index++)␊
190 if (ns_match(ns, &acpi_processors[index].ns)) {␊
191 acpi_ns_found = 1;␊
192 break;␊
193 }␊
194 }␊
195 return current;␊
196}␊
197␊
198static U8 *parse_acpi_buffer(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
199{␊
200 U32 pkglen, lengthEncoding;␊
201 (void)ns;␊
202 (void)end;␊
203 if (*current != AML_BUFFER_OP)␊
204 return current;␊
205 current++;␊
206 parsePackageLength(current, &pkglen, &lengthEncoding);␊
207 current += pkglen;␊
208 return current;␊
209}␊
210␊
211static U8 *parse_acpi_computationaldata(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
212{␊
213 U8 *temp = current;␊
214␊
215 current = parse_acpi_buffer(ns, current, end);␊
216 if (current != temp)␊
217 return current;␊
218␊
219 switch (*current) {␊
220 case AML_BYTE_OP:␊
221 DBG("Found ByteOp\n");␊
222 current += 1 + 1;␊
223 break;␊
224 case AML_WORD_OP:␊
225 DBG( "Found WordOp\n");␊
226 current += 1 + 2;␊
227 break;␊
228 case AML_DWORD_OP:␊
229 DBG("Found DwordOp\n");␊
230 current += 1 + 4;␊
231 break;␊
232 case AML_QWORD_OP:␊
233 DBG( "Found QwordOp\n");␊
234 current += 1 + 8;␊
235 break;␊
236 case AML_STRING_OP:␊
237 DBG( "Found StringOp: \"");␊
238 current++;␊
239 while (*current)␊
240#if DEBUG_ACPI_DECODE␊
241 if (*current < ' ' || *current > 0x7e)␊
242 printf( "\\x%02x", *current++);␊
243 else␊
244 printf( "%c", *current++);␊
245#else␊
246 current++;␊
247#endif␊
248 current++; /* Skip the \0 */␊
249 DBG( "\"\n");␊
250 break;␊
251 case AML_ZERO_OP:␊
252 DBG( "Found ZeroOp\n");␊
253 current += 1;␊
254 break;␊
255 case AML_ONE_OP:␊
256 DBG( "Found OneOp\n");␊
257 current += 1;␊
258 break;␊
259 case AML_ONES_OP:␊
260 DBG( "Found OneOp\n");␊
261 current += 1;␊
262 break;␊
263 case AML_EXT_OP_PREFIX:␊
264 if (*(current + 1) == AML_REVISION_OP)␊
265 current += 2;␊
266 default:␊
267 break;␊
268 }␊
269␊
270 return current;␊
271}␊
272␊
273static U8 *parse_acpi_argobj(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
274{␊
275 (void)ns;␊
276 (void)end;␊
277 switch (*current) {␊
278 case AML_ARG0_OP:␊
279 DBG( "Found Arg0Op\n");␊
280 current++;␊
281 break;␊
282 case AML_ARG1_OP:␊
283 DBG( "Found Arg1Op\n");␊
284 current++;␊
285 break;␊
286 case AML_ARG2_OP:␊
287 DBG( "Found Arg2Op\n");␊
288 current++;␊
289 break;␊
290 case AML_ARG3_OP:␊
291 DBG( "Found Arg3Op\n");␊
292 current++;␊
293 break;␊
294 case AML_ARG4_OP:␊
295 DBG( "Found Arg4Op\n");␊
296 current++;␊
297 break;␊
298 case AML_ARG5_OP:␊
299 DBG( "Found Arg5Op\n");␊
300 current++;␊
301 break;␊
302 case AML_ARG6_OP:␊
303 DBG( "Found Arg6Op\n");␊
304 current++;␊
305 break;␊
306 default:␊
307 break;␊
308 }␊
309 return current;␊
310}␊
311␊
312static U8 *parse_acpi_localobj(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
313{␊
314 (void)ns;␊
315 (void)end;␊
316 switch (*current) {␊
317 case AML_LOCAL0_OP:␊
318 DBG( "Found Local0Op\n");␊
319 current++;␊
320 break;␊
321 case AML_LOCAL1_OP:␊
322 DBG( "Found Local1Op\n");␊
323 current++;␊
324 break;␊
325 case AML_LOCAL2_OP:␊
326 DBG( "Found Local2Op\n");␊
327 current++;␊
328 break;␊
329 case AML_LOCAL3_OP:␊
330 DBG("Found Local3Op\n");␊
331 current++;␊
332 break;␊
333 case AML_LOCAL4_OP:␊
334 DBG( "Found Local4Op\n");␊
335 current++;␊
336 break;␊
337 case AML_LOCAL5_OP:␊
338 DBG( "Found Local5Op\n");␊
339 current++;␊
340 break;␊
341 case AML_LOCAL6_OP:␊
342 DBG( "Found Local6Op\n");␊
343 current++;␊
344 break;␊
345 case AML_LOCAL7_OP:␊
346 DBG( "Found Local7Op\n");␊
347 current++;␊
348 break;␊
349 default:␊
350 break;␊
351 }␊
352 return current;␊
353}␊
354␊
355static U8 *parse_acpi_debugobj(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
356{␊
357 (void)ns;␊
358 (void)end;␊
359 if ((*current == AML_EXT_OP_PREFIX) && (*(current + 1) == AML_DEBUG_OP)) {␊
360 current += 2;␊
361 DBG( "Found DebugOp\n");␊
362 }␊
363␊
364 return current;␊
365}␊
366␊
367static U8 *parse_acpi_datarefobject(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
368{␊
369 U8 *temp = current;␊
370␊
371 DBG( "Beginning datarefobject: 0x%02x at memory location %p\n", *current, current);␊
372 current = parse_acpi_dataobject(ns, current, end);␊
373 if (current != temp)␊
374 return current;␊
375␊
376 return current;␊
377}␊
378␊
379static U8 *parse_acpi_simplename(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
380{␊
381 U8 *temp = current;␊
382␊
383 current = parse_acpi_namestring(ns, NULL, current, end);␊
384 if (current != temp)␊
385 return current;␊
386␊
387 current = parse_acpi_argobj(ns, current, end);␊
388 if (current != temp)␊
389 return current;␊
390␊
391 current = parse_acpi_localobj(ns, current, end);␊
392 if (current != temp)␊
393 return current;␊
394␊
395 return current;␊
396}␊
397␊
398static U8 *parse_acpi_supername(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
399{␊
400 U8 *temp = current;␊
401␊
402 current = parse_acpi_simplename(ns, current, end);␊
403 if (current != temp)␊
404 return current;␊
405␊
406 current = parse_acpi_debugobj(ns, current, end);␊
407 if (current != temp)␊
408 return current;␊
409␊
410 return current;␊
411}␊
412␊
413static U8 *parse_acpi_target(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
414{␊
415 U8 *temp = current;␊
416␊
417 current = parse_acpi_supername(ns, current, end);␊
418 if (current != temp)␊
419 return current;␊
420␊
421 if (*current == AML_NULL_NAME)␊
422 current++;␊
423␊
424 return current;␊
425}␊
426␊
427static U8 *parse_acpi_method(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
428{␊
429 U8 *new_end = current;␊
430 U8 *temp;␊
431 U32 pkglen;␊
432 U32 lengthEncoding;␊
433 struct acpi_namespace new_ns;␊
434␊
435 (void)end;␊
436␊
437 parsePackageLength(current, &pkglen, &lengthEncoding);␊
438 current += lengthEncoding;␊
439 new_end += pkglen;␊
440␊
441 temp = current;␊
442 current = parse_acpi_namestring(ns, &new_ns, current, new_end);␊
443 if (current == temp)␊
444 return new_end;␊
445␉␊
446#if DEBUG_ACPI_DECODE␊
447 DBG( "Found Method: ");␊
448 dprint_namespace(&new_ns);␊
449 DBG( "\n");␊
450#endif␊
451 // U8 methodFlags␊
452 current++;␊
453␊
454 parse_acpi_termlist(&new_ns, current, new_end);␊
455␊
456#if DEBUG_ACPI_DECODE␊
457 DBG( "End of Method: ");␊
458 dprint_namespace(&new_ns);␊
459 DBG( "\n");␊
460#endif␊
461␊
462 return new_end;␊
463}␊
464␊
465U32 acpi_processor_count;␊
466struct acpi_processor acpi_processors[CPU_MAP_LIMIT];␊
467␊
468static void add_processor(const struct acpi_namespace *ns, U8 id, U32 pmbase)␊
469{␊
470 if (acpi_processor_count == CPU_MAP_LIMIT) {␊
471 DBG( "No more room for ACPI processor structures\n");␊
472 return;␊
473 }␊
474 acpi_processors[acpi_processor_count].ns = *ns;␊
475 acpi_processors[acpi_processor_count].id = id;␊
476 acpi_processors[acpi_processor_count].pmbase = pmbase;␊
477 acpi_processor_count++;␊
478}␊
479␊
480static U8 *parse_acpi_processor(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
481{␊
482 U8 *new_end = current;␊
483 U8 *temp;␊
484 U32 pkglen;␊
485 U32 lengthEncoding;␊
486 struct acpi_namespace new_ns;␊
487 U8 id;␊
488 U32 pmbase;␊
489␊
490 (void)end;␊
491␊
492 parsePackageLength(current, &pkglen, &lengthEncoding);␊
493 current += lengthEncoding;␊
494 new_end += pkglen;␊
495␊
496 temp = current;␊
497 current = parse_acpi_namestring(ns, &new_ns, current, new_end);␊
498 if (current == temp)␊
499 return new_end;␊
500␊
501 id = *current++;␊
502 pmbase = *(U32 *) current;␊
503 current += 4;␊
504␉␊
505#if DEBUG_ACPI_DECODE␊
506 DBG( "Found CPU object: ");␊
507 dprint_namespace(&new_ns);␊
508 DBG( " id = 0x%x pmbase = 0x%x\n", id, pmbase);␊
509#endif␊
510 add_processor(&new_ns, id, pmbase);␊
511␊
512 return new_end;␊
513}␊
514␊
515static U8 *parse_acpi_namedobj(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
516{␊
517 DBG( "Beginning namedobj: 0x%02x at memory location %p\n", *current, current);␊
518 switch (*current) {␊
519 case AML_EXT_OP_PREFIX:␊
520 {␊
521 if (*(current + 1) == AML_MUTEX_OP) {␊
522 struct acpi_namespace new_ns;␊
523␊
524 current += 2;␊
525 current = parse_acpi_namestring(ns, &new_ns, current, end);␊
526#if DEBUG_ACPI_DECODE␊
527 DBG( "Mutex: ");␊
528 dprint_namespace(&new_ns);␊
529 DBG( "\n");␊
530#endif␊
531 current++; /* SyncFlags */␊
532 } else if (*(current + 1) == AML_OPREGION_OP) {␊
533 struct acpi_namespace new_ns;␊
534␊
535 current += 2;␊
536 DBG( "OpRegion at memory location %p\n", current);␊
537 current = parse_acpi_namestring(ns, &new_ns, current, end);␊
538#if DEBUG_ACPI_DECODE␊
539 DBG( "OpRegion name: ");␊
540 dprint_namespace(&new_ns);␊
541 DBG( "\n");␊
542#endif␊
543 current++;␊
544 current = parse_acpi_termarg(ns, current, end);␊
545 current = parse_acpi_termarg(ns, current, end);␊
546#if DEBUG_ACPI_DECODE␊
547 DBG( "End OpRegion: ");␊
548 dprint_namespace(&new_ns);␊
549 DBG( "\n");␊
550#endif␊
551 } else if (*(current + 1) == AML_FIELD_OP) {␊
552 U32 pkglen;␊
553 U32 lengthEncoding;␊
554␊
555 current += 2;␊
556 DBG( "FieldOp at memory location %p\n", current);␊
557 parsePackageLength(current, &pkglen, &lengthEncoding);␊
558 current += pkglen;␊
559 } else if (*(current + 1) == AML_DEVICE_OP) {␊
560 U8 *new_end;␊
561 U32 pkglen;␊
562 U32 lengthEncoding;␊
563 struct acpi_namespace new_ns;␊
564␊
565 current += 2;␊
566 new_end = current;␊
567 DBG( "DeviceOp at memory location %p\n", current);␊
568 parsePackageLength(current, &pkglen, &lengthEncoding);␊
569 current += lengthEncoding;␊
570 new_end += pkglen;␊
571 current = parse_acpi_namestring(ns, &new_ns, current, new_end);␊
572#if DEBUG_ACPI_DECODE␊
573 DBG( "DeviceOp name: ");␊
574 dprint_namespace(&new_ns);␊
575 DBG( "\n");␊
576#endif␊
577␊
578 current = parse_acpi_objectlist(&new_ns, current, new_end);␊
579 current = new_end;␊
580 } else if (*(current + 1) == AML_PROCESSOR_OP) {␊
581 current += 2;␊
582 current = parse_acpi_processor(ns, current, end);␊
583 } else if (*(current + 1) == AML_INDEXFIELD_OP) {␊
584 U8 *new_end;␊
585 U32 pkglen;␊
586 U32 lengthEncoding;␊
587 struct acpi_namespace new_ns;␊
588␊
589 current += 2;␊
590 new_end = current;␊
591 DBG( "IndexFieldOp at memory location %p\n", current);␊
592 parsePackageLength(current, &pkglen, &lengthEncoding);␊
593 current += lengthEncoding;␊
594 new_end += pkglen;␊
595 current = parse_acpi_namestring(ns, &new_ns, current, new_end);␊
596#if DEBUG_ACPI_DECODE␊
597 DBG( "IndexFieldOp name: ");␊
598 dprint_namespace(&new_ns);␊
599 DBG( "\n");␊
600#endif␊
601 current = parse_acpi_objectlist(&new_ns, current, new_end);␊
602 current = new_end;␊
603 }␊
604 break;␊
605 }␊
606 case AML_METHOD_OP:␊
607 {␊
608 current++;␊
609 current = parse_acpi_method(ns, current, end);␊
610 break;␊
611 }␊
612 default:␊
613 break;␊
614 }␊
615 return current;␊
616}␊
617␊
618static U8 *parse_acpi_type1opcode(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
619{␊
620 DBG( "Beginning type1opcode: 0x%02x at memory location %p\n", *current, current);␊
621 switch (*current) {␊
622 case AML_IF_OP:␊
623 {␊
624 U8 *new_end;␊
625 U32 pkgLen;␊
626 U32 lengthEncoding;␊
627␊
628 DBG( "Found IfOp\n");␊
629 current++;␊
630 parsePackageLength(current, &pkgLen, &lengthEncoding);␊
631 new_end = current + pkgLen;␊
632 current += lengthEncoding;␊
633␊
634 current = parse_acpi_termarg(ns, current, new_end);␊
635 parse_acpi_termlist(ns, current, new_end);␊
636 current = new_end;␊
637 break;␊
638 }␊
639 case AML_ELSE_OP:␊
640 {␊
641 U8 *new_end;␊
642 U32 pkgLen;␊
643 U32 lengthEncoding;␊
644␊
645 DBG( "Found ElseOp\n");␊
646 current++;␊
647 parsePackageLength(current, &pkgLen, &lengthEncoding);␊
648 new_end = current + pkgLen;␊
649 current += lengthEncoding;␊
650␊
651 parse_acpi_termlist(ns, current, new_end);␊
652 current = new_end;␊
653 break;␊
654 }␊
655 case AML_RETURN_OP:␊
656 {␊
657 DBG( "Found ReturnOp\n");␊
658 current++;␊
659 current = parse_acpi_termarg(ns, current, end);␊
660 break;␊
661 }␊
662 default:␊
663 break;␊
664 }␊
665 return current;␊
666}␊
667␊
668static U8 *parse_acpi_type2opcode(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
669{␊
670 U8 *temp = current;␊
671␊
672 DBG( "Beginning type2opcode: 0x%02x at memory location %p\n", *current, current);␊
673␊
674 current = parse_acpi_package(ns, current, end);␊
675 if (current != temp)␊
676 return current;␊
677␊
678 switch (*current) {␊
679 case AML_LNOT_OP:␊
680 current++;␊
681 DBG( "Found logical not operator\n");␊
682 current = parse_acpi_termarg(ns, current, end);␊
683 break;␊
684␊
685 case AML_LAND_OP:␊
686 case AML_LOR_OP:␊
687 case AML_LEQUAL_OP:␊
688 case AML_LGREATER_OP:␊
689 case AML_LLESS_OP:␊
690 DBG( "Found logical binary operator: %c\n", "&|!=><"[*current - AML_LAND_OP]);␊
691 current++;␊
692 current = parse_acpi_termarg(ns, current, end);␊
693 current = parse_acpi_termarg(ns, current, end);␊
694 break;␊
695␊
696 case AML_EXT_OP_PREFIX:␊
697 {␊
698 if (*(current + 1) == AML_COND_REF_OF_OP) {␊
699 DBG( "Found CondRefOf\n");␊
700 current += 2;␊
701 current = parse_acpi_supername(ns, current, end);␊
702 current = parse_acpi_target(ns, current, end);␊
703 }␊
704 break;␊
705 }␊
706 case AML_STORE_OP:␊
707 {␊
708 DBG( "Found StoreOp\n");␊
709 current++;␊
710 current = parse_acpi_termarg(ns, current, end);␊
711 current = parse_acpi_supername(ns, current, end);␊
712 break;␊
713 }␊
714 default:␊
715 {␊
716 current = parse_acpi_namestring(ns, NULL, current, end);␊
717 if (current == temp)␊
718 break;␊
719 current = parse_acpi_termarglist(ns, current, end);␊
720 }␊
721 }␊
722 return current;␊
723}␊
724␊
725static U8 *parse_acpi_package(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
726{␊
727 (void)ns;␊
728 (void)end;␊
729 if (*current == AML_PACKAGE_OP) {␊
730 U32 pkglen;␊
731 U32 lengthEncoding;␊
732␊
733 DBG( "Found PackageOp\n");␊
734 current++;␊
735 parsePackageLength(current, &pkglen, &lengthEncoding);␊
736 current += pkglen;␊
737 }␊
738 return current;␊
739}␊
740␊
741static U8 *parse_acpi_dataobject(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
742{␊
743 U8 *temp = current;␊
744␊
745 current = parse_acpi_computationaldata(ns, current, end);␊
746 if (current != temp)␊
747 return current;␊
748␊
749 current = parse_acpi_package(ns, current, end);␊
750 if (current != temp)␊
751 return current;␊
752␊
753 return current;␊
754}␊
755␊
756static U8 *parse_acpi_termarg(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
757{␊
758 U8 *temp = current;␊
759␊
760 DBG( "Beginning termarg: 0x%02x at memory location %p\n", *current, current);␊
761␊
762 current = parse_acpi_type2opcode(ns, current, end);␊
763 if (current != temp)␊
764 return current;␊
765␊
766 current = parse_acpi_dataobject(ns, current, end);␊
767 if (current != temp)␊
768 return current;␊
769␊
770 current = parse_acpi_argobj(ns, current, end);␊
771 if (current != temp)␊
772 return current;␊
773␊
774 current = parse_acpi_localobj(ns, current, end);␊
775 if (current != temp)␊
776 return current;␊
777␊
778 return current;␊
779}␊
780␊
781static U8 *parse_acpi_namespacemodifierobj(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
782{␊
783 DBG( "Beginning namespacemodifierobj: 0x%02x at memory location %p\n", *current, current);␊
784 switch (*current) {␊
785 case AML_SCOPE_OP:␊
786 {␊
787 U8 *new_end;␊
788 struct acpi_namespace new_ns;␊
789 U32 scopeLen;␊
790 U32 lengthEncoding;␊
791␊
792 current++;␊
793 parsePackageLength(current, &scopeLen, &lengthEncoding);␊
794 new_end = current + scopeLen;␊
795␊
796 current = parse_acpi_namestring(ns, &new_ns, current + lengthEncoding, new_end);␊
797#if DEBUG_ACPI_DECODE␊
798 DBG( "Found Scope: ");␊
799 dprint_namespace(&new_ns);␊
800 DBG( "\n");␊
801#endif␊
802 parse_acpi_termlist(&new_ns, current, new_end);␊
803#if DEBUG_ACPI_DECODE␊
804 DBG( "End Scope: ");␊
805 dprint_namespace(&new_ns);␊
806 DBG( "\n");␊
807#endif␊
808 current = new_end;␊
809 break;␊
810 }␊
811 case AML_NAME_OP:␊
812 current++;␊
813 current = parse_acpi_namestring(ns, NULL, current, end);␊
814 current = parse_acpi_datarefobject(ns, current, end);␊
815 break;␊
816 case AML_ALIAS_OP:␊
817 current++;␊
818 current = parse_acpi_namestring(ns, NULL, current, end);␊
819 current = parse_acpi_namestring(ns, NULL, current, end);␊
820 break;␊
821 default:␊
822 break;␊
823 }␊
824 return current;␊
825}␊
826␊
827static U8 *parse_acpi_objectlist(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
828{␊
829 DBG( "Beginning objectlist: 0x%02x at memory location %p end=%p\n", *current, current, end);␊
830 while (current < end) {␊
831 U8 *temp = current;␊
832␊
833 DBG( "New iteration of objectlist: 0x%02x at memory location %p end=%p\n", *current, current, end);␊
834␊
835 current = parse_acpi_namespacemodifierobj(ns, current, end);␊
836 if (current != temp)␊
837 continue;␊
838␊
839 current = parse_acpi_namedobj(ns, current, end);␊
840 if (current != temp)␊
841 continue;␊
842␊
843 if (current == temp) {␊
844 DBG( "Unhandled object in object list: 0x%02x at memory location %p\n", *current, current);␊
845#if DEBUG_ACPI_DECODE␊
846 DBG( "namespace: ");␊
847 dprint_namespace(ns);␊
848 DBG( "\n");␊
849#endif␊
850 break;␊
851 }␊
852 }␊
853 DBG( "Ending objectlist: 0x%02x at memory location %p\n", *current, current);␊
854 return current;␊
855}␊
856␊
857static U8 *parse_acpi_termarglist(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
858{␊
859 DBG( "Beginning termarglist: 0x%02x at memory location %p\n", *current, current);␊
860 while (current < end) {␊
861 U8 *temp = current;␊
862␊
863 current = parse_acpi_termarg(ns, current, end);␊
864 if (current == temp) {␊
865 DBG( "Unhandled item in term arg list: 0x%02x at memory location %p\n", *current, current);␊
866#if DEBUG_ACPI_DECODE␊
867 DBG( "namespace: ");␊
868 dprint_namespace(ns);␊
869 DBG( "\n");␊
870#endif␊
871 break;␊
872 }␊
873 }␊
874 return current;␊
875}␊
876␊
877void parse_acpi_termlist(const struct acpi_namespace *ns, U8 * current, U8 * end)␊
878{␊
879 while (current < end) {␊
880 U8 *temp = current;␊
881␊
882 DBG( "Beginning new term in term list: 0x%02x at memory location %p\n", *current, current);␊
883␊
884 current = parse_acpi_namespacemodifierobj(ns, current, end);␊
885 if (current != temp)␊
886 continue;␊
887␊
888 current = parse_acpi_namedobj(ns, current, end);␊
889 if (current != temp)␊
890 continue;␊
891␊
892 current = parse_acpi_type1opcode(ns, current, end);␊
893 if (current != temp)␊
894 continue;␊
895␊
896 current = parse_acpi_type2opcode(ns, current, end);␊
897 if (current != temp)␊
898 continue;␊
899␊
900 switch (*current) {␊
901 default:␊
902 {␊
903 DBG( "Unhandled item in term list: 0x%02x at memory location %p\n", *current, current);␊
904#if DEBUG_ACPI_DECODE␊
905 DBG( "namespace: ");␊
906 dprint_namespace(ns);␊
907 DBG( "\n");␊
908#endif␊
909 return;␊
910 }␊
911 }␊
912 }␊
913}␊
914

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