1 /******************************************************************************* 2 * 3 * Module Name: rscalc - Calculate stream and list lengths 4 * $Revision: 1.79 $ 5 * 6 ******************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2006, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __RSCALC_C__ 118 119 #include "acpi.h" 120 #include "acresrc.h" 121 #include "amlcode.h" 122 #include "acnamesp.h" 123 124 #define _COMPONENT ACPI_RESOURCES 125 ACPI_MODULE_NAME ("rscalc") 126 127 128 /* Local prototypes */ 129 130 static UINT8 131 AcpiRsCountSetBits ( 132 UINT16 BitField); 133 134 static ACPI_RS_LENGTH 135 AcpiRsStructOptionLength ( 136 ACPI_RESOURCE_SOURCE *ResourceSource); 137 138 static UINT32 139 AcpiRsStreamOptionLength ( 140 UINT32 ResourceLength, 141 UINT32 MinimumTotalLength); 142 143 144 /******************************************************************************* 145 * 146 * FUNCTION: AcpiRsCountSetBits 147 * 148 * PARAMETERS: BitField - Field in which to count bits 149 * 150 * RETURN: Number of bits set within the field 151 * 152 * DESCRIPTION: Count the number of bits set in a resource field. Used for 153 * (Short descriptor) interrupt and DMA lists. 154 * 155 ******************************************************************************/ 156 157 static UINT8 158 AcpiRsCountSetBits ( 159 UINT16 BitField) 160 { 161 UINT8 BitsSet; 162 163 164 ACPI_FUNCTION_ENTRY (); 165 166 167 for (BitsSet = 0; BitField; BitsSet++) 168 { 169 /* Zero the least significant bit that is set */ 170 171 BitField &= (BitField - 1); 172 } 173 174 return (BitsSet); 175 } 176 177 178 /******************************************************************************* 179 * 180 * FUNCTION: AcpiRsStructOptionLength 181 * 182 * PARAMETERS: ResourceSource - Pointer to optional descriptor field 183 * 184 * RETURN: Status 185 * 186 * DESCRIPTION: Common code to handle optional ResourceSourceIndex and 187 * ResourceSource fields in some Large descriptors. Used during 188 * list-to-stream conversion 189 * 190 ******************************************************************************/ 191 192 static ACPI_RS_LENGTH 193 AcpiRsStructOptionLength ( 194 ACPI_RESOURCE_SOURCE *ResourceSource) 195 { 196 ACPI_FUNCTION_ENTRY (); 197 198 199 /* 200 * If the ResourceSource string is valid, return the size of the string 201 * (StringLength includes the NULL terminator) plus the size of the 202 * ResourceSourceIndex (1). 203 */ 204 if (ResourceSource->StringPtr) 205 { 206 return ((ACPI_RS_LENGTH) (ResourceSource->StringLength + 1)); 207 } 208 209 return (0); 210 } 211 212 213 /******************************************************************************* 214 * 215 * FUNCTION: AcpiRsStreamOptionLength 216 * 217 * PARAMETERS: ResourceLength - Length from the resource header 218 * MinimumTotalLength - Minimum length of this resource, before 219 * any optional fields. Includes header size 220 * 221 * RETURN: Length of optional string (0 if no string present) 222 * 223 * DESCRIPTION: Common code to handle optional ResourceSourceIndex and 224 * ResourceSource fields in some Large descriptors. Used during 225 * stream-to-list conversion 226 * 227 ******************************************************************************/ 228 229 static UINT32 230 AcpiRsStreamOptionLength ( 231 UINT32 ResourceLength, 232 UINT32 MinimumAmlResourceLength) 233 { 234 UINT32 StringLength = 0; 235 236 237 ACPI_FUNCTION_ENTRY (); 238 239 240 /* 241 * The ResourceSourceIndex and ResourceSource are optional elements of some 242 * Large-type resource descriptors. 243 */ 244 245 /* 246 * If the length of the actual resource descriptor is greater than the ACPI 247 * spec-defined minimum length, it means that a ResourceSourceIndex exists 248 * and is followed by a (required) null terminated string. The string length 249 * (including the null terminator) is the resource length minus the minimum 250 * length, minus one byte for the ResourceSourceIndex itself. 251 */ 252 if (ResourceLength > MinimumAmlResourceLength) 253 { 254 /* Compute the length of the optional string */ 255 256 StringLength = ResourceLength - MinimumAmlResourceLength - 1; 257 } 258 259 /* 260 * Round the length up to a multiple of the native word in order to 261 * guarantee that the entire resource descriptor is native word aligned 262 */ 263 return ((UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (StringLength)); 264 } 265 266 267 /******************************************************************************* 268 * 269 * FUNCTION: AcpiRsGetAmlLength 270 * 271 * PARAMETERS: Resource - Pointer to the resource linked list 272 * SizeNeeded - Where the required size is returned 273 * 274 * RETURN: Status 275 * 276 * DESCRIPTION: Takes a linked list of internal resource descriptors and 277 * calculates the size buffer needed to hold the corresponding 278 * external resource byte stream. 279 * 280 ******************************************************************************/ 281 282 ACPI_STATUS 283 AcpiRsGetAmlLength ( 284 ACPI_RESOURCE *Resource, 285 ACPI_SIZE *SizeNeeded) 286 { 287 ACPI_SIZE AmlSizeNeeded = 0; 288 ACPI_RS_LENGTH TotalSize; 289 290 291 ACPI_FUNCTION_TRACE (RsGetAmlLength); 292 293 294 /* Traverse entire list of internal resource descriptors */ 295 296 while (Resource) 297 { 298 /* Validate the descriptor type */ 299 300 if (Resource->Type > ACPI_RESOURCE_TYPE_MAX) 301 { 302 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE); 303 } 304 305 /* Get the base size of the (external stream) resource descriptor */ 306 307 TotalSize = AcpiGbl_AmlResourceSizes [Resource->Type]; 308 309 /* 310 * Augment the base size for descriptors with optional and/or 311 * variable-length fields 312 */ 313 switch (Resource->Type) 314 { 315 case ACPI_RESOURCE_TYPE_VENDOR: 316 /* 317 * Vendor Defined Resource: 318 * For a Vendor Specific resource, if the Length is between 1 and 7 319 * it will be created as a Small Resource data type, otherwise it 320 * is a Large Resource data type. 321 */ 322 if (Resource->Data.Vendor.ByteLength > 7) 323 { 324 /* Base size of a Large resource descriptor */ 325 326 TotalSize = sizeof (AML_RESOURCE_LARGE_HEADER); 327 } 328 329 /* Add the size of the vendor-specific data */ 330 331 TotalSize = (ACPI_RS_LENGTH) 332 (TotalSize + Resource->Data.Vendor.ByteLength); 333 break; 334 335 336 case ACPI_RESOURCE_TYPE_END_TAG: 337 /* 338 * End Tag: 339 * We are done -- return the accumulated total size. 340 */ 341 *SizeNeeded = AmlSizeNeeded + TotalSize; 342 343 /* Normal exit */ 344 345 return_ACPI_STATUS (AE_OK); 346 347 348 case ACPI_RESOURCE_TYPE_ADDRESS16: 349 /* 350 * 16-Bit Address Resource: 351 * Add the size of the optional ResourceSource info 352 */ 353 TotalSize = (ACPI_RS_LENGTH) 354 (TotalSize + AcpiRsStructOptionLength ( 355 &Resource->Data.Address16.ResourceSource)); 356 break; 357 358 359 case ACPI_RESOURCE_TYPE_ADDRESS32: 360 /* 361 * 32-Bit Address Resource: 362 * Add the size of the optional ResourceSource info 363 */ 364 TotalSize = (ACPI_RS_LENGTH) 365 (TotalSize + AcpiRsStructOptionLength ( 366 &Resource->Data.Address32.ResourceSource)); 367 break; 368 369 370 case ACPI_RESOURCE_TYPE_ADDRESS64: 371 /* 372 * 64-Bit Address Resource: 373 * Add the size of the optional ResourceSource info 374 */ 375 TotalSize = (ACPI_RS_LENGTH) 376 (TotalSize + AcpiRsStructOptionLength ( 377 &Resource->Data.Address64.ResourceSource)); 378 break; 379 380 381 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 382 /* 383 * Extended IRQ Resource: 384 * Add the size of each additional optional interrupt beyond the 385 * required 1 (4 bytes for each UINT32 interrupt number) 386 */ 387 TotalSize = (ACPI_RS_LENGTH) 388 (TotalSize + 389 ((Resource->Data.ExtendedIrq.InterruptCount - 1) * 4) + 390 391 /* Add the size of the optional ResourceSource info */ 392 393 AcpiRsStructOptionLength ( 394 &Resource->Data.ExtendedIrq.ResourceSource)); 395 break; 396 397 398 default: 399 break; 400 } 401 402 /* Update the total */ 403 404 AmlSizeNeeded += TotalSize; 405 406 /* Point to the next object */ 407 408 Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length); 409 } 410 411 /* Did not find an EndTag resource descriptor */ 412 413 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); 414 } 415 416 417 /******************************************************************************* 418 * 419 * FUNCTION: AcpiRsGetListLength 420 * 421 * PARAMETERS: AmlBuffer - Pointer to the resource byte stream 422 * AmlBufferLength - Size of AmlBuffer 423 * SizeNeeded - Where the size needed is returned 424 * 425 * RETURN: Status 426 * 427 * DESCRIPTION: Takes an external resource byte stream and calculates the size 428 * buffer needed to hold the corresponding internal resource 429 * descriptor linked list. 430 * 431 ******************************************************************************/ 432 433 ACPI_STATUS 434 AcpiRsGetListLength ( 435 UINT8 *AmlBuffer, 436 UINT32 AmlBufferLength, 437 ACPI_SIZE *SizeNeeded) 438 { 439 ACPI_STATUS Status; 440 UINT8 *EndAml; 441 UINT8 *Buffer; 442 UINT32 BufferSize; 443 UINT16 Temp16; 444 UINT16 ResourceLength; 445 UINT32 ExtraStructBytes; 446 UINT8 ResourceIndex; 447 UINT8 MinimumAmlResourceLength; 448 449 450 ACPI_FUNCTION_TRACE (RsGetListLength); 451 452 453 *SizeNeeded = 0; 454 EndAml = AmlBuffer + AmlBufferLength; 455 456 /* Walk the list of AML resource descriptors */ 457 458 while (AmlBuffer < EndAml) 459 { 460 /* Validate the Resource Type and Resource Length */ 461 462 Status = AcpiUtValidateResource (AmlBuffer, &ResourceIndex); 463 if (ACPI_FAILURE (Status)) 464 { 465 return_ACPI_STATUS (Status); 466 } 467 468 /* Get the resource length and base (minimum) AML size */ 469 470 ResourceLength = AcpiUtGetResourceLength (AmlBuffer); 471 MinimumAmlResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex]; 472 473 /* 474 * Augment the size for descriptors with optional 475 * and/or variable length fields 476 */ 477 ExtraStructBytes = 0; 478 Buffer = AmlBuffer + AcpiUtGetResourceHeaderLength (AmlBuffer); 479 480 switch (AcpiUtGetResourceType (AmlBuffer)) 481 { 482 case ACPI_RESOURCE_NAME_IRQ: 483 /* 484 * IRQ Resource: 485 * Get the number of bits set in the 16-bit IRQ mask 486 */ 487 ACPI_MOVE_16_TO_16 (&Temp16, Buffer); 488 ExtraStructBytes = AcpiRsCountSetBits (Temp16); 489 break; 490 491 492 case ACPI_RESOURCE_NAME_DMA: 493 /* 494 * DMA Resource: 495 * Get the number of bits set in the 8-bit DMA mask 496 */ 497 ExtraStructBytes = AcpiRsCountSetBits (*Buffer); 498 break; 499 500 501 case ACPI_RESOURCE_NAME_VENDOR_SMALL: 502 case ACPI_RESOURCE_NAME_VENDOR_LARGE: 503 /* 504 * Vendor Resource: 505 * Get the number of vendor data bytes 506 */ 507 ExtraStructBytes = ResourceLength; 508 break; 509 510 511 case ACPI_RESOURCE_NAME_END_TAG: 512 /* 513 * End Tag: 514 * This is the normal exit, add size of EndTag 515 */ 516 *SizeNeeded += ACPI_RS_SIZE_MIN; 517 return_ACPI_STATUS (AE_OK); 518 519 520 case ACPI_RESOURCE_NAME_ADDRESS32: 521 case ACPI_RESOURCE_NAME_ADDRESS16: 522 case ACPI_RESOURCE_NAME_ADDRESS64: 523 /* 524 * Address Resource: 525 * Add the size of the optional ResourceSource 526 */ 527 ExtraStructBytes = AcpiRsStreamOptionLength ( 528 ResourceLength, MinimumAmlResourceLength); 529 break; 530 531 532 case ACPI_RESOURCE_NAME_EXTENDED_IRQ: 533 /* 534 * Extended IRQ Resource: 535 * Using the InterruptTableLength, add 4 bytes for each additional 536 * interrupt. Note: at least one interrupt is required and is 537 * included in the minimum descriptor size (reason for the -1) 538 */ 539 ExtraStructBytes = (Buffer[1] - 1) * sizeof (UINT32); 540 541 /* Add the size of the optional ResourceSource */ 542 543 ExtraStructBytes += AcpiRsStreamOptionLength ( 544 ResourceLength - ExtraStructBytes, MinimumAmlResourceLength); 545 break; 546 547 548 default: 549 break; 550 } 551 552 /* 553 * Update the required buffer size for the internal descriptor structs 554 * 555 * Important: Round the size up for the appropriate alignment. This 556 * is a requirement on IA64. 557 */ 558 BufferSize = AcpiGbl_ResourceStructSizes[ResourceIndex] + 559 ExtraStructBytes; 560 BufferSize = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (BufferSize); 561 562 *SizeNeeded += BufferSize; 563 564 ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES, 565 "Type %.2X, AmlLength %.2X InternalLength %.2X\n", 566 AcpiUtGetResourceType (AmlBuffer), 567 AcpiUtGetDescriptorLength (AmlBuffer), BufferSize)); 568 569 /* 570 * Point to the next resource within the AML stream using the length 571 * contained in the resource descriptor header 572 */ 573 AmlBuffer += AcpiUtGetDescriptorLength (AmlBuffer); 574 } 575 576 /* Did not find an EndTag resource descriptor */ 577 578 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); 579 } 580 581 582 /******************************************************************************* 583 * 584 * FUNCTION: AcpiRsGetPciRoutingTableLength 585 * 586 * PARAMETERS: PackageObject - Pointer to the package object 587 * BufferSizeNeeded - UINT32 pointer of the size buffer 588 * needed to properly return the 589 * parsed data 590 * 591 * RETURN: Status 592 * 593 * DESCRIPTION: Given a package representing a PCI routing table, this 594 * calculates the size of the corresponding linked list of 595 * descriptions. 596 * 597 ******************************************************************************/ 598 599 ACPI_STATUS 600 AcpiRsGetPciRoutingTableLength ( 601 ACPI_OPERAND_OBJECT *PackageObject, 602 ACPI_SIZE *BufferSizeNeeded) 603 { 604 UINT32 NumberOfElements; 605 ACPI_SIZE TempSizeNeeded = 0; 606 ACPI_OPERAND_OBJECT **TopObjectList; 607 UINT32 Index; 608 ACPI_OPERAND_OBJECT *PackageElement; 609 ACPI_OPERAND_OBJECT **SubObjectList; 610 BOOLEAN NameFound; 611 UINT32 TableIndex; 612 613 614 ACPI_FUNCTION_TRACE (RsGetPciRoutingTableLength); 615 616 617 NumberOfElements = PackageObject->Package.Count; 618 619 /* 620 * Calculate the size of the return buffer. 621 * The base size is the number of elements * the sizes of the 622 * structures. Additional space for the strings is added below. 623 * The minus one is to subtract the size of the UINT8 Source[1] 624 * member because it is added below. 625 * 626 * But each PRT_ENTRY structure has a pointer to a string and 627 * the size of that string must be found. 628 */ 629 TopObjectList = PackageObject->Package.Elements; 630 631 for (Index = 0; Index < NumberOfElements; Index++) 632 { 633 /* Dereference the sub-package */ 634 635 PackageElement = *TopObjectList; 636 637 /* 638 * The SubObjectList will now point to an array of the 639 * four IRQ elements: Address, Pin, Source and SourceIndex 640 */ 641 SubObjectList = PackageElement->Package.Elements; 642 643 /* Scan the IrqTableElements for the Source Name String */ 644 645 NameFound = FALSE; 646 647 for (TableIndex = 0; TableIndex < 4 && !NameFound; TableIndex++) 648 { 649 if (*SubObjectList && /* Null object allowed */ 650 651 ((ACPI_TYPE_STRING == 652 ACPI_GET_OBJECT_TYPE (*SubObjectList)) || 653 654 ((ACPI_TYPE_LOCAL_REFERENCE == 655 ACPI_GET_OBJECT_TYPE (*SubObjectList)) && 656 657 ((*SubObjectList)->Reference.Opcode == 658 AML_INT_NAMEPATH_OP)))) 659 { 660 NameFound = TRUE; 661 } 662 else 663 { 664 /* Look at the next element */ 665 666 SubObjectList++; 667 } 668 } 669 670 TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4); 671 672 /* Was a String type found? */ 673 674 if (NameFound) 675 { 676 if (ACPI_GET_OBJECT_TYPE (*SubObjectList) == ACPI_TYPE_STRING) 677 { 678 /* 679 * The length String.Length field does not include the 680 * terminating NULL, add 1 681 */ 682 TempSizeNeeded += ((ACPI_SIZE) 683 (*SubObjectList)->String.Length + 1); 684 } 685 else 686 { 687 TempSizeNeeded += AcpiNsGetPathnameLength ( 688 (*SubObjectList)->Reference.Node); 689 } 690 } 691 else 692 { 693 /* 694 * If no name was found, then this is a NULL, which is 695 * translated as a UINT32 zero. 696 */ 697 TempSizeNeeded += sizeof (UINT32); 698 } 699 700 /* Round up the size since each element must be aligned */ 701 702 TempSizeNeeded = ACPI_ROUND_UP_TO_64BIT (TempSizeNeeded); 703 704 /* Point to the next ACPI_OPERAND_OBJECT */ 705 706 TopObjectList++; 707 } 708 709 /* 710 * Add an extra element to the end of the list, essentially a 711 * NULL terminator 712 */ 713 *BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE); 714 return_ACPI_STATUS (AE_OK); 715 } 716