1 /*******************************************************************************
2 *
3 * Module Name: rscalc - Calculate stream and list lengths
4 *
5 ******************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2018, 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 "acresrc.h"
155 #include "acnamesp.h"
156
157
158 #define _COMPONENT ACPI_RESOURCES
159 ACPI_MODULE_NAME ("rscalc")
160
161
162 /* Local prototypes */
163
164 static UINT8
165 AcpiRsCountSetBits (
166 UINT16 BitField);
167
168 static ACPI_RS_LENGTH
169 AcpiRsStructOptionLength (
170 ACPI_RESOURCE_SOURCE *ResourceSource);
171
172 static UINT32
173 AcpiRsStreamOptionLength (
174 UINT32 ResourceLength,
175 UINT32 MinimumTotalLength);
176
177
178 /*******************************************************************************
179 *
180 * FUNCTION: AcpiRsCountSetBits
181 *
182 * PARAMETERS: BitField - Field in which to count bits
183 *
184 * RETURN: Number of bits set within the field
185 *
186 * DESCRIPTION: Count the number of bits set in a resource field. Used for
187 * (Short descriptor) interrupt and DMA lists.
188 *
189 ******************************************************************************/
190
191 static UINT8
AcpiRsCountSetBits(UINT16 BitField)192 AcpiRsCountSetBits (
193 UINT16 BitField)
194 {
195 UINT8 BitsSet;
196
197
198 ACPI_FUNCTION_ENTRY ();
199
200
201 for (BitsSet = 0; BitField; BitsSet++)
202 {
203 /* Zero the least significant bit that is set */
204
205 BitField &= (UINT16) (BitField - 1);
206 }
207
208 return (BitsSet);
209 }
210
211
212 /*******************************************************************************
213 *
214 * FUNCTION: AcpiRsStructOptionLength
215 *
216 * PARAMETERS: ResourceSource - Pointer to optional descriptor field
217 *
218 * RETURN: Status
219 *
220 * DESCRIPTION: Common code to handle optional ResourceSourceIndex and
221 * ResourceSource fields in some Large descriptors. Used during
222 * list-to-stream conversion
223 *
224 ******************************************************************************/
225
226 static ACPI_RS_LENGTH
AcpiRsStructOptionLength(ACPI_RESOURCE_SOURCE * ResourceSource)227 AcpiRsStructOptionLength (
228 ACPI_RESOURCE_SOURCE *ResourceSource)
229 {
230 ACPI_FUNCTION_ENTRY ();
231
232
233 /*
234 * If the ResourceSource string is valid, return the size of the string
235 * (StringLength includes the NULL terminator) plus the size of the
236 * ResourceSourceIndex (1).
237 */
238 if (ResourceSource->StringPtr)
239 {
240 return ((ACPI_RS_LENGTH) (ResourceSource->StringLength + 1));
241 }
242
243 return (0);
244 }
245
246
247 /*******************************************************************************
248 *
249 * FUNCTION: AcpiRsStreamOptionLength
250 *
251 * PARAMETERS: ResourceLength - Length from the resource header
252 * MinimumTotalLength - Minimum length of this resource, before
253 * any optional fields. Includes header size
254 *
255 * RETURN: Length of optional string (0 if no string present)
256 *
257 * DESCRIPTION: Common code to handle optional ResourceSourceIndex and
258 * ResourceSource fields in some Large descriptors. Used during
259 * stream-to-list conversion
260 *
261 ******************************************************************************/
262
263 static UINT32
AcpiRsStreamOptionLength(UINT32 ResourceLength,UINT32 MinimumAmlResourceLength)264 AcpiRsStreamOptionLength (
265 UINT32 ResourceLength,
266 UINT32 MinimumAmlResourceLength)
267 {
268 UINT32 StringLength = 0;
269
270
271 ACPI_FUNCTION_ENTRY ();
272
273
274 /*
275 * The ResourceSourceIndex and ResourceSource are optional elements of
276 * some Large-type resource descriptors.
277 */
278
279 /*
280 * If the length of the actual resource descriptor is greater than the
281 * ACPI spec-defined minimum length, it means that a ResourceSourceIndex
282 * exists and is followed by a (required) null terminated string. The
283 * string length (including the null terminator) is the resource length
284 * minus the minimum length, minus one byte for the ResourceSourceIndex
285 * itself.
286 */
287 if (ResourceLength > MinimumAmlResourceLength)
288 {
289 /* Compute the length of the optional string */
290
291 StringLength = ResourceLength - MinimumAmlResourceLength - 1;
292 }
293
294 /*
295 * Round the length up to a multiple of the native word in order to
296 * guarantee that the entire resource descriptor is native word aligned
297 */
298 return ((UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (StringLength));
299 }
300
301
302 /*******************************************************************************
303 *
304 * FUNCTION: AcpiRsGetAmlLength
305 *
306 * PARAMETERS: Resource - Pointer to the resource linked list
307 * ResourceListSize - Size of the resource linked list
308 * SizeNeeded - Where the required size is returned
309 *
310 * RETURN: Status
311 *
312 * DESCRIPTION: Takes a linked list of internal resource descriptors and
313 * calculates the size buffer needed to hold the corresponding
314 * external resource byte stream.
315 *
316 ******************************************************************************/
317
318 ACPI_STATUS
AcpiRsGetAmlLength(ACPI_RESOURCE * Resource,ACPI_SIZE ResourceListSize,ACPI_SIZE * SizeNeeded)319 AcpiRsGetAmlLength (
320 ACPI_RESOURCE *Resource,
321 ACPI_SIZE ResourceListSize,
322 ACPI_SIZE *SizeNeeded)
323 {
324 ACPI_SIZE AmlSizeNeeded = 0;
325 ACPI_RESOURCE *ResourceEnd;
326 ACPI_RS_LENGTH TotalSize;
327
328
329 ACPI_FUNCTION_TRACE (RsGetAmlLength);
330
331
332 /* Traverse entire list of internal resource descriptors */
333
334 ResourceEnd = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, ResourceListSize);
335 while (Resource < ResourceEnd)
336 {
337 /* Validate the descriptor type */
338
339 if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
340 {
341 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
342 }
343
344 /* Sanity check the length. It must not be zero, or we loop forever */
345
346 if (!Resource->Length)
347 {
348 return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
349 }
350
351 /* Get the base size of the (external stream) resource descriptor */
352
353 TotalSize = AcpiGbl_AmlResourceSizes [Resource->Type];
354
355 /*
356 * Augment the base size for descriptors with optional and/or
357 * variable-length fields
358 */
359 switch (Resource->Type)
360 {
361 case ACPI_RESOURCE_TYPE_IRQ:
362
363 /* Length can be 3 or 2 */
364
365 if (Resource->Data.Irq.DescriptorLength == 2)
366 {
367 TotalSize--;
368 }
369 break;
370
371
372 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
373
374 /* Length can be 1 or 0 */
375
376 if (Resource->Data.Irq.DescriptorLength == 0)
377 {
378 TotalSize--;
379 }
380 break;
381
382
383 case ACPI_RESOURCE_TYPE_VENDOR:
384 /*
385 * Vendor Defined Resource:
386 * For a Vendor Specific resource, if the Length is between 1 and 7
387 * it will be created as a Small Resource data type, otherwise it
388 * is a Large Resource data type.
389 */
390 if (Resource->Data.Vendor.ByteLength > 7)
391 {
392 /* Base size of a Large resource descriptor */
393
394 TotalSize = sizeof (AML_RESOURCE_LARGE_HEADER);
395 }
396
397 /* Add the size of the vendor-specific data */
398
399 TotalSize = (ACPI_RS_LENGTH)
400 (TotalSize + Resource->Data.Vendor.ByteLength);
401 break;
402
403
404 case ACPI_RESOURCE_TYPE_END_TAG:
405 /*
406 * End Tag:
407 * We are done -- return the accumulated total size.
408 */
409 *SizeNeeded = AmlSizeNeeded + TotalSize;
410
411 /* Normal exit */
412
413 return_ACPI_STATUS (AE_OK);
414
415
416 case ACPI_RESOURCE_TYPE_ADDRESS16:
417 /*
418 * 16-Bit Address Resource:
419 * Add the size of the optional ResourceSource info
420 */
421 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
422 AcpiRsStructOptionLength (
423 &Resource->Data.Address16.ResourceSource));
424 break;
425
426
427 case ACPI_RESOURCE_TYPE_ADDRESS32:
428 /*
429 * 32-Bit Address Resource:
430 * Add the size of the optional ResourceSource info
431 */
432 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
433 AcpiRsStructOptionLength (
434 &Resource->Data.Address32.ResourceSource));
435 break;
436
437
438 case ACPI_RESOURCE_TYPE_ADDRESS64:
439 /*
440 * 64-Bit Address Resource:
441 * Add the size of the optional ResourceSource info
442 */
443 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
444 AcpiRsStructOptionLength (
445 &Resource->Data.Address64.ResourceSource));
446 break;
447
448
449 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
450 /*
451 * Extended IRQ Resource:
452 * Add the size of each additional optional interrupt beyond the
453 * required 1 (4 bytes for each UINT32 interrupt number)
454 */
455 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
456 ((Resource->Data.ExtendedIrq.InterruptCount - 1) * 4) +
457
458 /* Add the size of the optional ResourceSource info */
459
460 AcpiRsStructOptionLength (
461 &Resource->Data.ExtendedIrq.ResourceSource));
462 break;
463
464
465 case ACPI_RESOURCE_TYPE_GPIO:
466
467 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
468 (Resource->Data.Gpio.PinTableLength * 2) +
469 Resource->Data.Gpio.ResourceSource.StringLength +
470 Resource->Data.Gpio.VendorLength);
471
472 break;
473
474 case ACPI_RESOURCE_TYPE_PIN_FUNCTION:
475
476 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
477 (Resource->Data.PinFunction.PinTableLength * 2) +
478 Resource->Data.PinFunction.ResourceSource.StringLength +
479 Resource->Data.PinFunction.VendorLength);
480
481 break;
482
483
484 case ACPI_RESOURCE_TYPE_SERIAL_BUS:
485
486 TotalSize = AcpiGbl_AmlResourceSerialBusSizes [
487 Resource->Data.CommonSerialBus.Type];
488
489 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
490 Resource->Data.I2cSerialBus.ResourceSource.StringLength +
491 Resource->Data.I2cSerialBus.VendorLength);
492
493 break;
494
495 case ACPI_RESOURCE_TYPE_PIN_CONFIG:
496
497 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
498 (Resource->Data.PinConfig.PinTableLength * 2) +
499 Resource->Data.PinConfig.ResourceSource.StringLength +
500 Resource->Data.PinConfig.VendorLength);
501
502 break;
503
504 case ACPI_RESOURCE_TYPE_PIN_GROUP:
505
506 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
507 (Resource->Data.PinGroup.PinTableLength * 2) +
508 Resource->Data.PinGroup.ResourceLabel.StringLength +
509 Resource->Data.PinGroup.VendorLength);
510
511 break;
512
513 case ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION:
514
515 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
516 Resource->Data.PinGroupFunction.ResourceSource.StringLength +
517 Resource->Data.PinGroupFunction.ResourceSourceLabel.StringLength +
518 Resource->Data.PinGroupFunction.VendorLength);
519
520 break;
521
522 case ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG:
523
524 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
525 Resource->Data.PinGroupConfig.ResourceSource.StringLength +
526 Resource->Data.PinGroupConfig.ResourceSourceLabel.StringLength +
527 Resource->Data.PinGroupConfig.VendorLength);
528
529 break;
530
531 default:
532
533 break;
534 }
535
536 /* Update the total */
537
538 AmlSizeNeeded += TotalSize;
539
540 /* Point to the next object */
541
542 Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
543 }
544
545 /* Did not find an EndTag resource descriptor */
546
547 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
548 }
549
550
551 /*******************************************************************************
552 *
553 * FUNCTION: AcpiRsGetListLength
554 *
555 * PARAMETERS: AmlBuffer - Pointer to the resource byte stream
556 * AmlBufferLength - Size of AmlBuffer
557 * SizeNeeded - Where the size needed is returned
558 *
559 * RETURN: Status
560 *
561 * DESCRIPTION: Takes an external resource byte stream and calculates the size
562 * buffer needed to hold the corresponding internal resource
563 * descriptor linked list.
564 *
565 ******************************************************************************/
566
567 ACPI_STATUS
AcpiRsGetListLength(UINT8 * AmlBuffer,UINT32 AmlBufferLength,ACPI_SIZE * SizeNeeded)568 AcpiRsGetListLength (
569 UINT8 *AmlBuffer,
570 UINT32 AmlBufferLength,
571 ACPI_SIZE *SizeNeeded)
572 {
573 ACPI_STATUS Status;
574 UINT8 *EndAml;
575 UINT8 *Buffer;
576 UINT32 BufferSize;
577 UINT16 Temp16;
578 UINT16 ResourceLength;
579 UINT32 ExtraStructBytes;
580 UINT8 ResourceIndex;
581 UINT8 MinimumAmlResourceLength;
582 AML_RESOURCE *AmlResource;
583
584
585 ACPI_FUNCTION_TRACE (RsGetListLength);
586
587
588 *SizeNeeded = ACPI_RS_SIZE_MIN; /* Minimum size is one EndTag */
589 EndAml = AmlBuffer + AmlBufferLength;
590
591 /* Walk the list of AML resource descriptors */
592
593 while (AmlBuffer < EndAml)
594 {
595 /* Validate the Resource Type and Resource Length */
596
597 Status = AcpiUtValidateResource (NULL, AmlBuffer, &ResourceIndex);
598 if (ACPI_FAILURE (Status))
599 {
600 /*
601 * Exit on failure. Cannot continue because the descriptor length
602 * may be bogus also.
603 */
604 return_ACPI_STATUS (Status);
605 }
606
607 AmlResource = (void *) AmlBuffer;
608
609 /* Get the resource length and base (minimum) AML size */
610
611 ResourceLength = AcpiUtGetResourceLength (AmlBuffer);
612 MinimumAmlResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
613
614 /*
615 * Augment the size for descriptors with optional
616 * and/or variable length fields
617 */
618 ExtraStructBytes = 0;
619 Buffer = AmlBuffer + AcpiUtGetResourceHeaderLength (AmlBuffer);
620
621 switch (AcpiUtGetResourceType (AmlBuffer))
622 {
623 case ACPI_RESOURCE_NAME_IRQ:
624 /*
625 * IRQ Resource:
626 * Get the number of bits set in the 16-bit IRQ mask
627 */
628 ACPI_MOVE_16_TO_16 (&Temp16, Buffer);
629 ExtraStructBytes = AcpiRsCountSetBits (Temp16);
630 break;
631
632
633 case ACPI_RESOURCE_NAME_DMA:
634 /*
635 * DMA Resource:
636 * Get the number of bits set in the 8-bit DMA mask
637 */
638 ExtraStructBytes = AcpiRsCountSetBits (*Buffer);
639 break;
640
641
642 case ACPI_RESOURCE_NAME_VENDOR_SMALL:
643 case ACPI_RESOURCE_NAME_VENDOR_LARGE:
644 /*
645 * Vendor Resource:
646 * Get the number of vendor data bytes
647 */
648 ExtraStructBytes = ResourceLength;
649
650 /*
651 * There is already one byte included in the minimum
652 * descriptor size. If there are extra struct bytes,
653 * subtract one from the count.
654 */
655 if (ExtraStructBytes)
656 {
657 ExtraStructBytes--;
658 }
659 break;
660
661
662 case ACPI_RESOURCE_NAME_END_TAG:
663 /*
664 * End Tag: This is the normal exit
665 */
666 return_ACPI_STATUS (AE_OK);
667
668
669 case ACPI_RESOURCE_NAME_ADDRESS32:
670 case ACPI_RESOURCE_NAME_ADDRESS16:
671 case ACPI_RESOURCE_NAME_ADDRESS64:
672 /*
673 * Address Resource:
674 * Add the size of the optional ResourceSource
675 */
676 ExtraStructBytes = AcpiRsStreamOptionLength (
677 ResourceLength, MinimumAmlResourceLength);
678 break;
679
680
681 case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
682 /*
683 * Extended IRQ Resource:
684 * Using the InterruptTableLength, add 4 bytes for each additional
685 * interrupt. Note: at least one interrupt is required and is
686 * included in the minimum descriptor size (reason for the -1)
687 */
688 ExtraStructBytes = (Buffer[1] - 1) * sizeof (UINT32);
689
690 /* Add the size of the optional ResourceSource */
691
692 ExtraStructBytes += AcpiRsStreamOptionLength (
693 ResourceLength - ExtraStructBytes, MinimumAmlResourceLength);
694 break;
695
696 case ACPI_RESOURCE_NAME_GPIO:
697
698 /* Vendor data is optional */
699
700 if (AmlResource->Gpio.VendorLength)
701 {
702 ExtraStructBytes +=
703 AmlResource->Gpio.VendorOffset -
704 AmlResource->Gpio.PinTableOffset +
705 AmlResource->Gpio.VendorLength;
706 }
707 else
708 {
709 ExtraStructBytes +=
710 AmlResource->LargeHeader.ResourceLength +
711 sizeof (AML_RESOURCE_LARGE_HEADER) -
712 AmlResource->Gpio.PinTableOffset;
713 }
714 break;
715
716 case ACPI_RESOURCE_NAME_PIN_FUNCTION:
717
718 /* Vendor data is optional */
719
720 if (AmlResource->PinFunction.VendorLength)
721 {
722 ExtraStructBytes +=
723 AmlResource->PinFunction.VendorOffset -
724 AmlResource->PinFunction.PinTableOffset +
725 AmlResource->PinFunction.VendorLength;
726 }
727 else
728 {
729 ExtraStructBytes +=
730 AmlResource->LargeHeader.ResourceLength +
731 sizeof (AML_RESOURCE_LARGE_HEADER) -
732 AmlResource->PinFunction.PinTableOffset;
733 }
734 break;
735
736 case ACPI_RESOURCE_NAME_SERIAL_BUS:
737
738 MinimumAmlResourceLength = AcpiGbl_ResourceAmlSerialBusSizes[
739 AmlResource->CommonSerialBus.Type];
740 ExtraStructBytes +=
741 AmlResource->CommonSerialBus.ResourceLength -
742 MinimumAmlResourceLength;
743 break;
744
745 case ACPI_RESOURCE_NAME_PIN_CONFIG:
746
747 /* Vendor data is optional */
748
749 if (AmlResource->PinConfig.VendorLength)
750 {
751 ExtraStructBytes +=
752 AmlResource->PinConfig.VendorOffset -
753 AmlResource->PinConfig.PinTableOffset +
754 AmlResource->PinConfig.VendorLength;
755 }
756 else
757 {
758 ExtraStructBytes +=
759 AmlResource->LargeHeader.ResourceLength +
760 sizeof (AML_RESOURCE_LARGE_HEADER) -
761 AmlResource->PinConfig.PinTableOffset;
762 }
763 break;
764
765 case ACPI_RESOURCE_NAME_PIN_GROUP:
766
767 ExtraStructBytes +=
768 AmlResource->PinGroup.VendorOffset -
769 AmlResource->PinGroup.PinTableOffset +
770 AmlResource->PinGroup.VendorLength;
771
772 break;
773
774 case ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION:
775
776 ExtraStructBytes +=
777 AmlResource->PinGroupFunction.VendorOffset -
778 AmlResource->PinGroupFunction.ResSourceOffset +
779 AmlResource->PinGroupFunction.VendorLength;
780
781 break;
782
783 case ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG:
784
785 ExtraStructBytes +=
786 AmlResource->PinGroupConfig.VendorOffset -
787 AmlResource->PinGroupConfig.ResSourceOffset +
788 AmlResource->PinGroupConfig.VendorLength;
789
790 break;
791
792 default:
793
794 break;
795 }
796
797 /*
798 * Update the required buffer size for the internal descriptor structs
799 *
800 * Important: Round the size up for the appropriate alignment. This
801 * is a requirement on IA64.
802 */
803 if (AcpiUtGetResourceType (AmlBuffer) ==
804 ACPI_RESOURCE_NAME_SERIAL_BUS)
805 {
806 BufferSize = AcpiGbl_ResourceStructSerialBusSizes[
807 AmlResource->CommonSerialBus.Type] + ExtraStructBytes;
808 }
809 else
810 {
811 BufferSize = AcpiGbl_ResourceStructSizes[ResourceIndex] +
812 ExtraStructBytes;
813 }
814
815 BufferSize = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (BufferSize);
816 *SizeNeeded += BufferSize;
817
818 ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
819 "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
820 AcpiUtGetResourceType (AmlBuffer),
821 AcpiUtGetDescriptorLength (AmlBuffer), BufferSize));
822
823 /*
824 * Point to the next resource within the AML stream using the length
825 * contained in the resource descriptor header
826 */
827 AmlBuffer += AcpiUtGetDescriptorLength (AmlBuffer);
828 }
829
830 /* Did not find an EndTag resource descriptor */
831
832 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
833 }
834
835
836 /*******************************************************************************
837 *
838 * FUNCTION: AcpiRsGetPciRoutingTableLength
839 *
840 * PARAMETERS: PackageObject - Pointer to the package object
841 * BufferSizeNeeded - UINT32 pointer of the size buffer
842 * needed to properly return the
843 * parsed data
844 *
845 * RETURN: Status
846 *
847 * DESCRIPTION: Given a package representing a PCI routing table, this
848 * calculates the size of the corresponding linked list of
849 * descriptions.
850 *
851 ******************************************************************************/
852
853 ACPI_STATUS
AcpiRsGetPciRoutingTableLength(ACPI_OPERAND_OBJECT * PackageObject,ACPI_SIZE * BufferSizeNeeded)854 AcpiRsGetPciRoutingTableLength (
855 ACPI_OPERAND_OBJECT *PackageObject,
856 ACPI_SIZE *BufferSizeNeeded)
857 {
858 UINT32 NumberOfElements;
859 ACPI_SIZE TempSizeNeeded = 0;
860 ACPI_OPERAND_OBJECT **TopObjectList;
861 UINT32 Index;
862 ACPI_OPERAND_OBJECT *PackageElement;
863 ACPI_OPERAND_OBJECT **SubObjectList;
864 BOOLEAN NameFound;
865 UINT32 TableIndex;
866
867
868 ACPI_FUNCTION_TRACE (RsGetPciRoutingTableLength);
869
870
871 NumberOfElements = PackageObject->Package.Count;
872
873 /*
874 * Calculate the size of the return buffer.
875 * The base size is the number of elements * the sizes of the
876 * structures. Additional space for the strings is added below.
877 * The minus one is to subtract the size of the UINT8 Source[1]
878 * member because it is added below.
879 *
880 * But each PRT_ENTRY structure has a pointer to a string and
881 * the size of that string must be found.
882 */
883 TopObjectList = PackageObject->Package.Elements;
884
885 for (Index = 0; Index < NumberOfElements; Index++)
886 {
887 /* Dereference the subpackage */
888
889 PackageElement = *TopObjectList;
890
891 /* We must have a valid Package object */
892
893 if (!PackageElement ||
894 (PackageElement->Common.Type != ACPI_TYPE_PACKAGE))
895 {
896 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
897 }
898
899 /*
900 * The SubObjectList will now point to an array of the
901 * four IRQ elements: Address, Pin, Source and SourceIndex
902 */
903 SubObjectList = PackageElement->Package.Elements;
904
905 /* Scan the IrqTableElements for the Source Name String */
906
907 NameFound = FALSE;
908
909 for (TableIndex = 0;
910 TableIndex < PackageElement->Package.Count && !NameFound;
911 TableIndex++)
912 {
913 if (*SubObjectList && /* Null object allowed */
914
915 ((ACPI_TYPE_STRING ==
916 (*SubObjectList)->Common.Type) ||
917
918 ((ACPI_TYPE_LOCAL_REFERENCE ==
919 (*SubObjectList)->Common.Type) &&
920
921 ((*SubObjectList)->Reference.Class ==
922 ACPI_REFCLASS_NAME))))
923 {
924 NameFound = TRUE;
925 }
926 else
927 {
928 /* Look at the next element */
929
930 SubObjectList++;
931 }
932 }
933
934 TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
935
936 /* Was a String type found? */
937
938 if (NameFound)
939 {
940 if ((*SubObjectList)->Common.Type == ACPI_TYPE_STRING)
941 {
942 /*
943 * The length String.Length field does not include the
944 * terminating NULL, add 1
945 */
946 TempSizeNeeded += ((ACPI_SIZE)
947 (*SubObjectList)->String.Length + 1);
948 }
949 else
950 {
951 TempSizeNeeded += AcpiNsGetPathnameLength (
952 (*SubObjectList)->Reference.Node);
953 }
954 }
955 else
956 {
957 /*
958 * If no name was found, then this is a NULL, which is
959 * translated as a UINT32 zero.
960 */
961 TempSizeNeeded += sizeof (UINT32);
962 }
963
964 /* Round up the size since each element must be aligned */
965
966 TempSizeNeeded = ACPI_ROUND_UP_TO_64BIT (TempSizeNeeded);
967
968 /* Point to the next ACPI_OPERAND_OBJECT */
969
970 TopObjectList++;
971 }
972
973 /*
974 * Add an extra element to the end of the list, essentially a
975 * NULL terminator
976 */
977 *BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE);
978 return_ACPI_STATUS (AE_OK);
979 }
980