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 - 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 <contrib/dev/acpica/include/acpi.h>
153 #include <contrib/dev/acpica/include/accommon.h>
154 #include <contrib/dev/acpica/include/acresrc.h>
155 #include <contrib/dev/acpica/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 case ACPI_RESOURCE_TYPE_CLOCK_INPUT:
484
485 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
486 Resource->Data.ClockInput.ResourceSource.StringLength);
487
488 break;
489
490
491 case ACPI_RESOURCE_TYPE_SERIAL_BUS:
492
493 TotalSize = AcpiGbl_AmlResourceSerialBusSizes [
494 Resource->Data.CommonSerialBus.Type];
495
496 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
497 Resource->Data.I2cSerialBus.ResourceSource.StringLength +
498 Resource->Data.I2cSerialBus.VendorLength);
499
500 break;
501
502 case ACPI_RESOURCE_TYPE_PIN_CONFIG:
503
504 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
505 (Resource->Data.PinConfig.PinTableLength * 2) +
506 Resource->Data.PinConfig.ResourceSource.StringLength +
507 Resource->Data.PinConfig.VendorLength);
508
509 break;
510
511 case ACPI_RESOURCE_TYPE_PIN_GROUP:
512
513 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
514 (Resource->Data.PinGroup.PinTableLength * 2) +
515 Resource->Data.PinGroup.ResourceLabel.StringLength +
516 Resource->Data.PinGroup.VendorLength);
517
518 break;
519
520 case ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION:
521
522 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
523 Resource->Data.PinGroupFunction.ResourceSource.StringLength +
524 Resource->Data.PinGroupFunction.ResourceSourceLabel.StringLength +
525 Resource->Data.PinGroupFunction.VendorLength);
526
527 break;
528
529 case ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG:
530
531 TotalSize = (ACPI_RS_LENGTH) (TotalSize +
532 Resource->Data.PinGroupConfig.ResourceSource.StringLength +
533 Resource->Data.PinGroupConfig.ResourceSourceLabel.StringLength +
534 Resource->Data.PinGroupConfig.VendorLength);
535
536 break;
537
538 default:
539
540 break;
541 }
542
543 /* Update the total */
544
545 AmlSizeNeeded += TotalSize;
546
547 /* Point to the next object */
548
549 Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
550 }
551
552 /* Did not find an EndTag resource descriptor */
553
554 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
555 }
556
557
558 /*******************************************************************************
559 *
560 * FUNCTION: AcpiRsGetListLength
561 *
562 * PARAMETERS: AmlBuffer - Pointer to the resource byte stream
563 * AmlBufferLength - Size of AmlBuffer
564 * SizeNeeded - Where the size needed is returned
565 *
566 * RETURN: Status
567 *
568 * DESCRIPTION: Takes an external resource byte stream and calculates the size
569 * buffer needed to hold the corresponding internal resource
570 * descriptor linked list.
571 *
572 ******************************************************************************/
573
574 ACPI_STATUS
AcpiRsGetListLength(UINT8 * AmlBuffer,UINT32 AmlBufferLength,ACPI_SIZE * SizeNeeded)575 AcpiRsGetListLength (
576 UINT8 *AmlBuffer,
577 UINT32 AmlBufferLength,
578 ACPI_SIZE *SizeNeeded)
579 {
580 ACPI_STATUS Status;
581 UINT8 *EndAml;
582 UINT8 *Buffer;
583 UINT32 BufferSize;
584 UINT16 Temp16;
585 UINT16 ResourceLength;
586 UINT32 ExtraStructBytes;
587 UINT8 ResourceIndex;
588 UINT8 MinimumAmlResourceLength;
589 AML_RESOURCE *AmlResource;
590
591
592 ACPI_FUNCTION_TRACE (RsGetListLength);
593
594
595 *SizeNeeded = ACPI_RS_SIZE_MIN; /* Minimum size is one EndTag */
596 EndAml = AmlBuffer + AmlBufferLength;
597
598 /* Walk the list of AML resource descriptors */
599
600 while (AmlBuffer < EndAml)
601 {
602 /* Validate the Resource Type and Resource Length */
603
604 Status = AcpiUtValidateResource (NULL, AmlBuffer, &ResourceIndex);
605 if (ACPI_FAILURE (Status))
606 {
607 /*
608 * Exit on failure. Cannot continue because the descriptor length
609 * may be bogus also.
610 */
611 return_ACPI_STATUS (Status);
612 }
613
614 AmlResource = (void *) AmlBuffer;
615
616 /* Get the resource length and base (minimum) AML size */
617
618 ResourceLength = AcpiUtGetResourceLength (AmlBuffer);
619 MinimumAmlResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
620
621 /*
622 * Augment the size for descriptors with optional
623 * and/or variable length fields
624 */
625 ExtraStructBytes = 0;
626 Buffer = AmlBuffer + AcpiUtGetResourceHeaderLength (AmlBuffer);
627
628 switch (AcpiUtGetResourceType (AmlBuffer))
629 {
630 case ACPI_RESOURCE_NAME_IRQ:
631 /*
632 * IRQ Resource:
633 * Get the number of bits set in the 16-bit IRQ mask
634 */
635 ACPI_MOVE_16_TO_16 (&Temp16, Buffer);
636 ExtraStructBytes = AcpiRsCountSetBits (Temp16);
637 break;
638
639
640 case ACPI_RESOURCE_NAME_DMA:
641 /*
642 * DMA Resource:
643 * Get the number of bits set in the 8-bit DMA mask
644 */
645 ExtraStructBytes = AcpiRsCountSetBits (*Buffer);
646 break;
647
648
649 case ACPI_RESOURCE_NAME_VENDOR_SMALL:
650 case ACPI_RESOURCE_NAME_VENDOR_LARGE:
651 /*
652 * Vendor Resource:
653 * Get the number of vendor data bytes
654 */
655 ExtraStructBytes = ResourceLength;
656
657 /*
658 * There is already one byte included in the minimum
659 * descriptor size. If there are extra struct bytes,
660 * subtract one from the count.
661 */
662 if (ExtraStructBytes)
663 {
664 ExtraStructBytes--;
665 }
666 break;
667
668
669 case ACPI_RESOURCE_NAME_END_TAG:
670 /*
671 * End Tag: This is the normal exit
672 */
673 return_ACPI_STATUS (AE_OK);
674
675
676 case ACPI_RESOURCE_NAME_ADDRESS32:
677 case ACPI_RESOURCE_NAME_ADDRESS16:
678 case ACPI_RESOURCE_NAME_ADDRESS64:
679 /*
680 * Address Resource:
681 * Add the size of the optional ResourceSource
682 */
683 ExtraStructBytes = AcpiRsStreamOptionLength (
684 ResourceLength, MinimumAmlResourceLength);
685 break;
686
687
688 case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
689 /*
690 * Extended IRQ Resource:
691 * Using the InterruptTableLength, add 4 bytes for each additional
692 * interrupt. Note: at least one interrupt is required and is
693 * included in the minimum descriptor size (reason for the -1)
694 */
695 ExtraStructBytes = (Buffer[1] - 1) * sizeof (UINT32);
696
697 /* Add the size of the optional ResourceSource */
698
699 ExtraStructBytes += AcpiRsStreamOptionLength (
700 ResourceLength - ExtraStructBytes, MinimumAmlResourceLength);
701 break;
702
703 case ACPI_RESOURCE_NAME_GPIO:
704
705 /* Vendor data is optional */
706
707 if (AmlResource->Gpio.VendorLength)
708 {
709 ExtraStructBytes +=
710 AmlResource->Gpio.VendorOffset -
711 AmlResource->Gpio.PinTableOffset +
712 AmlResource->Gpio.VendorLength;
713 }
714 else
715 {
716 ExtraStructBytes +=
717 AmlResource->LargeHeader.ResourceLength +
718 sizeof (AML_RESOURCE_LARGE_HEADER) -
719 AmlResource->Gpio.PinTableOffset;
720 }
721 break;
722
723 case ACPI_RESOURCE_NAME_PIN_FUNCTION:
724
725 /* Vendor data is optional */
726
727 if (AmlResource->PinFunction.VendorLength)
728 {
729 ExtraStructBytes +=
730 AmlResource->PinFunction.VendorOffset -
731 AmlResource->PinFunction.PinTableOffset +
732 AmlResource->PinFunction.VendorLength;
733 }
734 else
735 {
736 ExtraStructBytes +=
737 AmlResource->LargeHeader.ResourceLength +
738 sizeof (AML_RESOURCE_LARGE_HEADER) -
739 AmlResource->PinFunction.PinTableOffset;
740 }
741 break;
742
743 case ACPI_RESOURCE_NAME_SERIAL_BUS: {
744 /* Avoid undefined behavior: member access within misaligned address */
745
746 AML_RESOURCE_COMMON_SERIALBUS CommonSerialBus;
747 memcpy(&CommonSerialBus, AmlResource, sizeof(CommonSerialBus));
748
749 MinimumAmlResourceLength = AcpiGbl_ResourceAmlSerialBusSizes[
750 CommonSerialBus.Type];
751 ExtraStructBytes +=
752 CommonSerialBus.ResourceLength -
753 MinimumAmlResourceLength;
754 break;
755 }
756
757 case ACPI_RESOURCE_NAME_PIN_CONFIG:
758
759 /* Vendor data is optional */
760
761 if (AmlResource->PinConfig.VendorLength)
762 {
763 ExtraStructBytes +=
764 AmlResource->PinConfig.VendorOffset -
765 AmlResource->PinConfig.PinTableOffset +
766 AmlResource->PinConfig.VendorLength;
767 }
768 else
769 {
770 ExtraStructBytes +=
771 AmlResource->LargeHeader.ResourceLength +
772 sizeof (AML_RESOURCE_LARGE_HEADER) -
773 AmlResource->PinConfig.PinTableOffset;
774 }
775 break;
776
777 case ACPI_RESOURCE_NAME_PIN_GROUP:
778
779 ExtraStructBytes +=
780 AmlResource->PinGroup.VendorOffset -
781 AmlResource->PinGroup.PinTableOffset +
782 AmlResource->PinGroup.VendorLength;
783
784 break;
785
786 case ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION:
787
788 ExtraStructBytes +=
789 AmlResource->PinGroupFunction.VendorOffset -
790 AmlResource->PinGroupFunction.ResSourceOffset +
791 AmlResource->PinGroupFunction.VendorLength;
792
793 break;
794
795 case ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG:
796
797 ExtraStructBytes +=
798 AmlResource->PinGroupConfig.VendorOffset -
799 AmlResource->PinGroupConfig.ResSourceOffset +
800 AmlResource->PinGroupConfig.VendorLength;
801
802 break;
803
804 case ACPI_RESOURCE_NAME_CLOCK_INPUT:
805 ExtraStructBytes = AcpiRsStreamOptionLength (
806 ResourceLength, MinimumAmlResourceLength);
807
808 break;
809
810 default:
811
812 break;
813 }
814
815 /*
816 * Update the required buffer size for the internal descriptor structs
817 *
818 * Important: Round the size up for the appropriate alignment. This
819 * is a requirement on IA64.
820 */
821 if (AcpiUtGetResourceType (AmlBuffer) ==
822 ACPI_RESOURCE_NAME_SERIAL_BUS)
823 {
824 /* Avoid undefined behavior: member access within misaligned address */
825
826 AML_RESOURCE_COMMON_SERIALBUS CommonSerialBus;
827 memcpy(&CommonSerialBus, AmlResource, sizeof(CommonSerialBus));
828
829 BufferSize = AcpiGbl_ResourceStructSerialBusSizes[
830 CommonSerialBus.Type] + ExtraStructBytes;
831 }
832 else
833 {
834 BufferSize = AcpiGbl_ResourceStructSizes[ResourceIndex] +
835 ExtraStructBytes;
836 }
837
838 BufferSize = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (BufferSize);
839 *SizeNeeded += BufferSize;
840
841 ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
842 "Type %.2X, AmlLength %.2X InternalLength %.2X%8X\n",
843 AcpiUtGetResourceType (AmlBuffer),
844 AcpiUtGetDescriptorLength (AmlBuffer), ACPI_FORMAT_UINT64(*SizeNeeded)));
845
846 /*
847 * Point to the next resource within the AML stream using the length
848 * contained in the resource descriptor header
849 */
850 AmlBuffer += AcpiUtGetDescriptorLength (AmlBuffer);
851 }
852
853 /* Did not find an EndTag resource descriptor */
854
855 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
856 }
857
858
859 /*******************************************************************************
860 *
861 * FUNCTION: AcpiRsGetPciRoutingTableLength
862 *
863 * PARAMETERS: PackageObject - Pointer to the package object
864 * BufferSizeNeeded - UINT32 pointer of the size buffer
865 * needed to properly return the
866 * parsed data
867 *
868 * RETURN: Status
869 *
870 * DESCRIPTION: Given a package representing a PCI routing table, this
871 * calculates the size of the corresponding linked list of
872 * descriptions.
873 *
874 ******************************************************************************/
875
876 ACPI_STATUS
AcpiRsGetPciRoutingTableLength(ACPI_OPERAND_OBJECT * PackageObject,ACPI_SIZE * BufferSizeNeeded)877 AcpiRsGetPciRoutingTableLength (
878 ACPI_OPERAND_OBJECT *PackageObject,
879 ACPI_SIZE *BufferSizeNeeded)
880 {
881 UINT32 NumberOfElements;
882 ACPI_SIZE TempSizeNeeded = 0;
883 ACPI_OPERAND_OBJECT **TopObjectList;
884 UINT32 Index;
885 ACPI_OPERAND_OBJECT *PackageElement;
886 ACPI_OPERAND_OBJECT **SubObjectList;
887 BOOLEAN NameFound;
888 UINT32 TableIndex;
889
890
891 ACPI_FUNCTION_TRACE (RsGetPciRoutingTableLength);
892
893
894 NumberOfElements = PackageObject->Package.Count;
895
896 /*
897 * Calculate the size of the return buffer.
898 * The base size is the number of elements * the sizes of the
899 * structures. Additional space for the strings is added below.
900 * The minus one is to subtract the size of the UINT8 Source[1]
901 * member because it is added below.
902 *
903 * But each PRT_ENTRY structure has a pointer to a string and
904 * the size of that string must be found.
905 */
906 TopObjectList = PackageObject->Package.Elements;
907
908 for (Index = 0; Index < NumberOfElements; Index++)
909 {
910 /* Dereference the subpackage */
911
912 PackageElement = *TopObjectList;
913
914 /* We must have a valid Package object */
915
916 if (!PackageElement ||
917 (PackageElement->Common.Type != ACPI_TYPE_PACKAGE))
918 {
919 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
920 }
921
922 /*
923 * The SubObjectList will now point to an array of the
924 * four IRQ elements: Address, Pin, Source and SourceIndex
925 */
926 SubObjectList = PackageElement->Package.Elements;
927
928 /* Scan the IrqTableElements for the Source Name String */
929
930 NameFound = FALSE;
931
932 for (TableIndex = 0;
933 TableIndex < PackageElement->Package.Count && !NameFound;
934 TableIndex++)
935 {
936 if (*SubObjectList && /* Null object allowed */
937
938 ((ACPI_TYPE_STRING ==
939 (*SubObjectList)->Common.Type) ||
940
941 ((ACPI_TYPE_LOCAL_REFERENCE ==
942 (*SubObjectList)->Common.Type) &&
943
944 ((*SubObjectList)->Reference.Class ==
945 ACPI_REFCLASS_NAME))))
946 {
947 NameFound = TRUE;
948 }
949 else
950 {
951 /* Look at the next element */
952
953 SubObjectList++;
954 }
955 }
956
957 TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
958
959 /* Was a String type found? */
960
961 if (NameFound)
962 {
963 if ((*SubObjectList)->Common.Type == ACPI_TYPE_STRING)
964 {
965 /*
966 * The length String.Length field does not include the
967 * terminating NULL, add 1
968 */
969 TempSizeNeeded += ((ACPI_SIZE)
970 (*SubObjectList)->String.Length + 1);
971 }
972 else
973 {
974 TempSizeNeeded += AcpiNsGetPathnameLength (
975 (*SubObjectList)->Reference.Node);
976 }
977 }
978 else
979 {
980 /*
981 * If no name was found, then this is a NULL, which is
982 * translated as a UINT32 zero.
983 */
984 TempSizeNeeded += sizeof (UINT32);
985 }
986
987 /* Round up the size since each element must be aligned */
988
989 TempSizeNeeded = ACPI_ROUND_UP_TO_64BIT (TempSizeNeeded);
990
991 /* Point to the next ACPI_OPERAND_OBJECT */
992
993 TopObjectList++;
994 }
995
996 /*
997 * Add an extra element to the end of the list, essentially a
998 * NULL terminator
999 */
1000 *BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE);
1001 return_ACPI_STATUS (AE_OK);
1002 }
1003