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44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acresrc.h"
47#include "acnamesp.h"
48
49#define _COMPONENT ACPI_RESOURCES
50ACPI_MODULE_NAME("rscalc")
51
52
53static u8 acpi_rs_count_set_bits(u16 bit_field);
54
55static acpi_rs_length
56acpi_rs_struct_option_length(struct acpi_resource_source *resource_source);
57
58static u32
59acpi_rs_stream_option_length(u32 resource_length, u32 minimum_total_length);
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74static u8 acpi_rs_count_set_bits(u16 bit_field)
75{
76 u8 bits_set;
77
78 ACPI_FUNCTION_ENTRY();
79
80 for (bits_set = 0; bit_field; bits_set++) {
81
82
83
84 bit_field &= (u16) (bit_field - 1);
85 }
86
87 return (bits_set);
88}
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104static acpi_rs_length
105acpi_rs_struct_option_length(struct acpi_resource_source *resource_source)
106{
107 ACPI_FUNCTION_ENTRY();
108
109
110
111
112
113
114 if (resource_source->string_ptr) {
115 return ((acpi_rs_length) (resource_source->string_length + 1));
116 }
117
118 return (0);
119}
120
121
122
123
124
125
126
127
128
129
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131
132
133
134
135
136
137static u32
138acpi_rs_stream_option_length(u32 resource_length,
139 u32 minimum_aml_resource_length)
140{
141 u32 string_length = 0;
142
143 ACPI_FUNCTION_ENTRY();
144
145
146
147
148
149
150
151
152
153
154
155
156
157 if (resource_length > minimum_aml_resource_length) {
158
159
160
161 string_length =
162 resource_length - minimum_aml_resource_length - 1;
163 }
164
165
166
167
168
169 return ((u32) ACPI_ROUND_UP_TO_NATIVE_WORD(string_length));
170}
171
172
173
174
175
176
177
178
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180
181
182
183
184
185
186
187
188acpi_status
189acpi_rs_get_aml_length(struct acpi_resource *resource,
190 acpi_size resource_list_size, acpi_size * size_needed)
191{
192 acpi_size aml_size_needed = 0;
193 struct acpi_resource *resource_end;
194 acpi_rs_length total_size;
195
196 ACPI_FUNCTION_TRACE(rs_get_aml_length);
197
198
199
200 resource_end =
201 ACPI_ADD_PTR(struct acpi_resource, resource, resource_list_size);
202 while (resource < resource_end) {
203
204
205
206 if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
207 return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
208 }
209
210
211
212 if (!resource->length) {
213 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
214 }
215
216
217
218 total_size = acpi_gbl_aml_resource_sizes[resource->type];
219
220
221
222
223
224 switch (resource->type) {
225 case ACPI_RESOURCE_TYPE_IRQ:
226
227
228
229 if (resource->data.irq.descriptor_length == 2) {
230 total_size--;
231 }
232 break;
233
234 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
235
236
237
238 if (resource->data.irq.descriptor_length == 0) {
239 total_size--;
240 }
241 break;
242
243 case ACPI_RESOURCE_TYPE_VENDOR:
244
245
246
247
248
249
250 if (resource->data.vendor.byte_length > 7) {
251
252
253
254 total_size =
255 sizeof(struct aml_resource_large_header);
256 }
257
258
259
260 total_size = (acpi_rs_length)
261 (total_size + resource->data.vendor.byte_length);
262 break;
263
264 case ACPI_RESOURCE_TYPE_END_TAG:
265
266
267
268
269 *size_needed = aml_size_needed + total_size;
270
271
272
273 return_ACPI_STATUS(AE_OK);
274
275 case ACPI_RESOURCE_TYPE_ADDRESS16:
276
277
278
279
280 total_size = (acpi_rs_length)
281 (total_size +
282 acpi_rs_struct_option_length(&resource->data.
283 address16.
284 resource_source));
285 break;
286
287 case ACPI_RESOURCE_TYPE_ADDRESS32:
288
289
290
291
292 total_size = (acpi_rs_length)
293 (total_size +
294 acpi_rs_struct_option_length(&resource->data.
295 address32.
296 resource_source));
297 break;
298
299 case ACPI_RESOURCE_TYPE_ADDRESS64:
300
301
302
303
304 total_size = (acpi_rs_length)
305 (total_size +
306 acpi_rs_struct_option_length(&resource->data.
307 address64.
308 resource_source));
309 break;
310
311 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
312
313
314
315
316
317 total_size = (acpi_rs_length)
318 (total_size +
319 ((resource->data.extended_irq.interrupt_count -
320 1) * 4) +
321
322 acpi_rs_struct_option_length(&resource->data.
323 extended_irq.
324 resource_source));
325 break;
326
327 case ACPI_RESOURCE_TYPE_GPIO:
328
329 total_size =
330 (acpi_rs_length) (total_size +
331 (resource->data.gpio.
332 pin_table_length * 2) +
333 resource->data.gpio.
334 resource_source.string_length +
335 resource->data.gpio.
336 vendor_length);
337
338 break;
339
340 case ACPI_RESOURCE_TYPE_SERIAL_BUS:
341
342 total_size =
343 acpi_gbl_aml_resource_serial_bus_sizes[resource->
344 data.
345 common_serial_bus.
346 type];
347
348 total_size = (acpi_rs_length) (total_size +
349 resource->data.
350 i2c_serial_bus.
351 resource_source.
352 string_length +
353 resource->data.
354 i2c_serial_bus.
355 vendor_length);
356
357 break;
358
359 default:
360
361 break;
362 }
363
364
365
366 aml_size_needed += total_size;
367
368
369
370 resource =
371 ACPI_ADD_PTR(struct acpi_resource, resource,
372 resource->length);
373 }
374
375
376
377 return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
378}
379
380
381
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389
390
391
392
393
394
395
396acpi_status
397acpi_rs_get_list_length(u8 * aml_buffer,
398 u32 aml_buffer_length, acpi_size * size_needed)
399{
400 acpi_status status;
401 u8 *end_aml;
402 u8 *buffer;
403 u32 buffer_size;
404 u16 temp16;
405 u16 resource_length;
406 u32 extra_struct_bytes;
407 u8 resource_index;
408 u8 minimum_aml_resource_length;
409 union aml_resource *aml_resource;
410
411 ACPI_FUNCTION_TRACE(rs_get_list_length);
412
413 *size_needed = ACPI_RS_SIZE_MIN;
414 end_aml = aml_buffer + aml_buffer_length;
415
416
417
418 while (aml_buffer < end_aml) {
419
420
421
422 status =
423 acpi_ut_validate_resource(NULL, aml_buffer,
424 &resource_index);
425 if (ACPI_FAILURE(status)) {
426
427
428
429
430 return_ACPI_STATUS(status);
431 }
432
433 aml_resource = (void *)aml_buffer;
434
435
436
437 resource_length = acpi_ut_get_resource_length(aml_buffer);
438 minimum_aml_resource_length =
439 acpi_gbl_resource_aml_sizes[resource_index];
440
441
442
443
444
445 extra_struct_bytes = 0;
446 buffer =
447 aml_buffer + acpi_ut_get_resource_header_length(aml_buffer);
448
449 switch (acpi_ut_get_resource_type(aml_buffer)) {
450 case ACPI_RESOURCE_NAME_IRQ:
451
452
453
454
455 ACPI_MOVE_16_TO_16(&temp16, buffer);
456 extra_struct_bytes = acpi_rs_count_set_bits(temp16);
457 break;
458
459 case ACPI_RESOURCE_NAME_DMA:
460
461
462
463
464 extra_struct_bytes = acpi_rs_count_set_bits(*buffer);
465 break;
466
467 case ACPI_RESOURCE_NAME_VENDOR_SMALL:
468 case ACPI_RESOURCE_NAME_VENDOR_LARGE:
469
470
471
472
473 extra_struct_bytes = resource_length;
474
475
476
477
478
479
480 if (extra_struct_bytes) {
481 extra_struct_bytes--;
482 }
483 break;
484
485 case ACPI_RESOURCE_NAME_END_TAG:
486
487
488
489 return_ACPI_STATUS(AE_OK);
490
491 case ACPI_RESOURCE_NAME_ADDRESS32:
492 case ACPI_RESOURCE_NAME_ADDRESS16:
493 case ACPI_RESOURCE_NAME_ADDRESS64:
494
495
496
497
498 extra_struct_bytes =
499 acpi_rs_stream_option_length(resource_length,
500 minimum_aml_resource_length);
501 break;
502
503 case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
504
505
506
507
508
509
510 extra_struct_bytes = (buffer[1] - 1) * sizeof(u32);
511
512
513
514 extra_struct_bytes +=
515 acpi_rs_stream_option_length(resource_length -
516 extra_struct_bytes,
517 minimum_aml_resource_length);
518 break;
519
520 case ACPI_RESOURCE_NAME_GPIO:
521
522
523
524 if (aml_resource->gpio.vendor_length) {
525 extra_struct_bytes +=
526 aml_resource->gpio.vendor_offset -
527 aml_resource->gpio.pin_table_offset +
528 aml_resource->gpio.vendor_length;
529 } else {
530 extra_struct_bytes +=
531 aml_resource->large_header.resource_length +
532 sizeof(struct aml_resource_large_header) -
533 aml_resource->gpio.pin_table_offset;
534 }
535 break;
536
537 case ACPI_RESOURCE_NAME_SERIAL_BUS:
538
539 minimum_aml_resource_length =
540 acpi_gbl_resource_aml_serial_bus_sizes
541 [aml_resource->common_serial_bus.type];
542 extra_struct_bytes +=
543 aml_resource->common_serial_bus.resource_length -
544 minimum_aml_resource_length;
545 break;
546
547 default:
548
549 break;
550 }
551
552
553
554
555
556
557
558 if (acpi_ut_get_resource_type(aml_buffer) ==
559 ACPI_RESOURCE_NAME_SERIAL_BUS) {
560 buffer_size =
561 acpi_gbl_resource_struct_serial_bus_sizes
562 [aml_resource->common_serial_bus.type] +
563 extra_struct_bytes;
564 } else {
565 buffer_size =
566 acpi_gbl_resource_struct_sizes[resource_index] +
567 extra_struct_bytes;
568 }
569 buffer_size = (u32)ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size);
570
571 *size_needed += buffer_size;
572
573 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
574 "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
575 acpi_ut_get_resource_type(aml_buffer),
576 acpi_ut_get_descriptor_length(aml_buffer),
577 buffer_size));
578
579
580
581
582
583 aml_buffer += acpi_ut_get_descriptor_length(aml_buffer);
584 }
585
586
587
588 return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
589}
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608acpi_status
609acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
610 acpi_size * buffer_size_needed)
611{
612 u32 number_of_elements;
613 acpi_size temp_size_needed = 0;
614 union acpi_operand_object **top_object_list;
615 u32 index;
616 union acpi_operand_object *package_element;
617 union acpi_operand_object **sub_object_list;
618 u8 name_found;
619 u32 table_index;
620
621 ACPI_FUNCTION_TRACE(rs_get_pci_routing_table_length);
622
623 number_of_elements = package_object->package.count;
624
625
626
627
628
629
630
631
632
633
634
635 top_object_list = package_object->package.elements;
636
637 for (index = 0; index < number_of_elements; index++) {
638
639
640
641 package_element = *top_object_list;
642
643
644
645 if (!package_element ||
646 (package_element->common.type != ACPI_TYPE_PACKAGE)) {
647 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
648 }
649
650
651
652
653
654 sub_object_list = package_element->package.elements;
655
656
657
658 name_found = FALSE;
659
660 for (table_index = 0;
661 table_index < package_element->package.count
662 && !name_found; table_index++) {
663 if (*sub_object_list &&
664 ((ACPI_TYPE_STRING ==
665 (*sub_object_list)->common.type) ||
666 ((ACPI_TYPE_LOCAL_REFERENCE ==
667 (*sub_object_list)->common.type) &&
668 ((*sub_object_list)->reference.class ==
669 ACPI_REFCLASS_NAME)))) {
670 name_found = TRUE;
671 } else {
672
673
674 sub_object_list++;
675 }
676 }
677
678 temp_size_needed += (sizeof(struct acpi_pci_routing_table) - 4);
679
680
681
682 if (name_found) {
683 if ((*sub_object_list)->common.type == ACPI_TYPE_STRING) {
684
685
686
687
688 temp_size_needed += ((acpi_size)
689 (*sub_object_list)->string.
690 length + 1);
691 } else {
692 temp_size_needed += acpi_ns_get_pathname_length((*sub_object_list)->reference.node);
693 }
694 } else {
695
696
697
698
699 temp_size_needed += sizeof(u32);
700 }
701
702
703
704 temp_size_needed = ACPI_ROUND_UP_TO_64BIT(temp_size_needed);
705
706
707
708 top_object_list++;
709 }
710
711
712
713
714
715 *buffer_size_needed =
716 temp_size_needed + sizeof(struct acpi_pci_routing_table);
717 return_ACPI_STATUS(AE_OK);
718}
719