1 /****************************************************************************** 2 * 3 * Module Name: dtutils.c - Utility routines for the data table compiler 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2020, 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/compiler/aslcompiler.h> 153 #include <contrib/dev/acpica/include/actables.h> 154 155 #define _COMPONENT DT_COMPILER 156 ACPI_MODULE_NAME ("dtutils") 157 158 /* Local prototypes */ 159 160 static void 161 DtSum ( 162 DT_SUBTABLE *Subtable, 163 void *Context, 164 void *ReturnValue); 165 166 167 /****************************************************************************** 168 * 169 * FUNCTION: DtError 170 * 171 * PARAMETERS: Level - Seriousness (Warning/error, etc.) 172 * MessageId - Index into global message buffer 173 * Op - Parse node where error happened 174 * ExtraMessage - additional error message 175 * 176 * RETURN: None 177 * 178 * DESCRIPTION: Common error interface for data table compiler 179 * 180 *****************************************************************************/ 181 182 void 183 DtError ( 184 UINT8 Level, 185 UINT16 MessageId, 186 DT_FIELD *FieldObject, 187 char *ExtraMessage) 188 { 189 190 /* Check if user wants to ignore this exception */ 191 192 if (AslIsExceptionIgnored (AslGbl_Files[ASL_FILE_INPUT].Filename, 193 FieldObject->Line, Level, MessageId)) 194 { 195 return; 196 } 197 198 if (FieldObject) 199 { 200 AslCommonError (Level, MessageId, 201 FieldObject->Line, 202 FieldObject->Line, 203 FieldObject->ByteOffset, 204 FieldObject->Column, 205 AslGbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage); 206 } 207 else 208 { 209 AslCommonError (Level, MessageId, 0, 210 0, 0, 0, 0, ExtraMessage); 211 } 212 } 213 214 215 /****************************************************************************** 216 * 217 * FUNCTION: DtNameError 218 * 219 * PARAMETERS: Level - Seriousness (Warning/error, etc.) 220 * MessageId - Index into global message buffer 221 * Op - Parse node where error happened 222 * ExtraMessage - additional error message 223 * 224 * RETURN: None 225 * 226 * DESCRIPTION: Error interface for named objects 227 * 228 *****************************************************************************/ 229 230 void 231 DtNameError ( 232 UINT8 Level, 233 UINT16 MessageId, 234 DT_FIELD *FieldObject, 235 char *ExtraMessage) 236 { 237 238 switch (Level) 239 { 240 case ASL_WARNING2: 241 case ASL_WARNING3: 242 243 if (AslGbl_WarningLevel < Level) 244 { 245 return; 246 } 247 break; 248 249 default: 250 251 break; 252 } 253 254 if (FieldObject) 255 { 256 AslCommonError (Level, MessageId, 257 FieldObject->Line, 258 FieldObject->Line, 259 FieldObject->ByteOffset, 260 FieldObject->NameColumn, 261 AslGbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage); 262 } 263 else 264 { 265 AslCommonError (Level, MessageId, 0, 266 0, 0, 0, 0, ExtraMessage); 267 } 268 } 269 270 271 /******************************************************************************* 272 * 273 * FUNCTION: DtFatal 274 * 275 * PARAMETERS: None 276 * 277 * RETURN: None 278 * 279 * DESCRIPTION: Dump the error log and abort the compiler. Used for serious 280 * compile or I/O errors 281 * 282 ******************************************************************************/ 283 284 void 285 DtFatal ( 286 UINT16 MessageId, 287 DT_FIELD *FieldObject, 288 char *ExtraMessage) 289 { 290 291 DtError (ASL_ERROR, MessageId, FieldObject, ExtraMessage); 292 293 /* 294 * TBD: remove this entire function, DtFatal 295 * 296 * We cannot abort the compiler on error, because we may be compiling a 297 * list of files. We must move on to the next file. 298 */ 299 #ifdef __OBSOLETE 300 CmCleanupAndExit (); 301 exit (1); 302 #endif 303 } 304 305 306 /******************************************************************************* 307 * 308 * FUNCTION: DtDoConstant 309 * 310 * PARAMETERS: String - Only hex constants are supported, 311 * regardless of whether the 0x prefix 312 * is used 313 * 314 * RETURN: Converted Integer 315 * 316 * DESCRIPTION: Convert a string to an integer, with overflow/error checking. 317 * 318 ******************************************************************************/ 319 320 UINT64 321 DtDoConstant ( 322 char *String) 323 { 324 UINT64 ConvertedInteger; 325 326 327 /* 328 * TBD: The ImplicitStrtoul64 function does not report overflow 329 * conditions. The input string is simply truncated. If it is 330 * desired to report overflow to the table compiler, this should 331 * somehow be added here. Note: integers that are prefixed with 0x 332 * or not are both hex integers. 333 */ 334 ConvertedInteger = AcpiUtImplicitStrtoul64 (String); 335 return (ConvertedInteger); 336 } 337 338 /****************************************************************************** 339 * 340 * FUNCTION: DtGetFieldValue 341 * 342 * PARAMETERS: Field - Current field list pointer 343 * 344 * RETURN: Field value 345 * 346 * DESCRIPTION: Get field value 347 * 348 *****************************************************************************/ 349 350 char * 351 DtGetFieldValue ( 352 DT_FIELD *Field) 353 { 354 if (!Field) 355 { 356 return (NULL); 357 } 358 359 return (Field->Value); 360 } 361 362 363 /****************************************************************************** 364 * 365 * FUNCTION: DtGetFieldType 366 * 367 * PARAMETERS: Info - Data table info 368 * 369 * RETURN: Field type 370 * 371 * DESCRIPTION: Get field type 372 * 373 *****************************************************************************/ 374 375 UINT8 376 DtGetFieldType ( 377 ACPI_DMTABLE_INFO *Info) 378 { 379 UINT8 Type; 380 381 382 /* DT_FLAG means that this is the start of a block of flag bits */ 383 /* TBD - we can make these a separate opcode later */ 384 385 if (Info->Flags & DT_FLAG) 386 { 387 return (DT_FIELD_TYPE_FLAGS_INTEGER); 388 } 389 390 /* Type is based upon the opcode for this field in the info table */ 391 392 switch (Info->Opcode) 393 { 394 case ACPI_DMT_FLAG0: 395 case ACPI_DMT_FLAG1: 396 case ACPI_DMT_FLAG2: 397 case ACPI_DMT_FLAG3: 398 case ACPI_DMT_FLAG4: 399 case ACPI_DMT_FLAG5: 400 case ACPI_DMT_FLAG6: 401 case ACPI_DMT_FLAG7: 402 case ACPI_DMT_FLAGS0: 403 case ACPI_DMT_FLAGS1: 404 case ACPI_DMT_FLAGS2: 405 case ACPI_DMT_FLAGS4: 406 case ACPI_DMT_FLAGS4_0: 407 case ACPI_DMT_FLAGS4_4: 408 case ACPI_DMT_FLAGS4_8: 409 case ACPI_DMT_FLAGS4_12: 410 case ACPI_DMT_FLAGS16_16: 411 412 Type = DT_FIELD_TYPE_FLAG; 413 break; 414 415 case ACPI_DMT_NAME4: 416 case ACPI_DMT_SIG: 417 case ACPI_DMT_NAME6: 418 case ACPI_DMT_NAME8: 419 case ACPI_DMT_STRING: 420 421 Type = DT_FIELD_TYPE_STRING; 422 break; 423 424 case ACPI_DMT_BUFFER: 425 case ACPI_DMT_RAW_BUFFER: 426 case ACPI_DMT_BUF7: 427 case ACPI_DMT_BUF10: 428 case ACPI_DMT_BUF12: 429 case ACPI_DMT_BUF16: 430 case ACPI_DMT_BUF128: 431 case ACPI_DMT_PCI_PATH: 432 433 Type = DT_FIELD_TYPE_BUFFER; 434 break; 435 436 case ACPI_DMT_GAS: 437 case ACPI_DMT_HESTNTFY: 438 case ACPI_DMT_IORTMEM: 439 440 Type = DT_FIELD_TYPE_INLINE_SUBTABLE; 441 break; 442 443 case ACPI_DMT_UNICODE: 444 445 Type = DT_FIELD_TYPE_UNICODE; 446 break; 447 448 case ACPI_DMT_UUID: 449 450 Type = DT_FIELD_TYPE_UUID; 451 break; 452 453 case ACPI_DMT_DEVICE_PATH: 454 455 Type = DT_FIELD_TYPE_DEVICE_PATH; 456 break; 457 458 case ACPI_DMT_LABEL: 459 460 Type = DT_FIELD_TYPE_LABEL; 461 break; 462 463 default: 464 465 Type = DT_FIELD_TYPE_INTEGER; 466 break; 467 } 468 469 return (Type); 470 } 471 472 473 /****************************************************************************** 474 * 475 * FUNCTION: DtGetBufferLength 476 * 477 * PARAMETERS: Buffer - List of integers, 478 * for example "10 3A 4F 2E" 479 * 480 * RETURN: Count of integer 481 * 482 * DESCRIPTION: Get length of bytes needed to store the integers 483 * 484 *****************************************************************************/ 485 486 UINT32 487 DtGetBufferLength ( 488 char *Buffer) 489 { 490 UINT32 ByteLength = 0; 491 492 493 while (*Buffer) 494 { 495 if (*Buffer == ' ') 496 { 497 ByteLength++; 498 499 while (*Buffer == ' ') 500 { 501 Buffer++; 502 } 503 } 504 505 Buffer++; 506 } 507 508 return (++ByteLength); 509 } 510 511 512 /****************************************************************************** 513 * 514 * FUNCTION: DtGetFieldLength 515 * 516 * PARAMETERS: Field - Current field 517 * Info - Data table info 518 * 519 * RETURN: Field length 520 * 521 * DESCRIPTION: Get length of bytes needed to compile the field 522 * 523 * Note: This function must remain in sync with AcpiDmDumpTable. 524 * 525 *****************************************************************************/ 526 527 UINT32 528 DtGetFieldLength ( 529 DT_FIELD *Field, 530 ACPI_DMTABLE_INFO *Info) 531 { 532 UINT32 ByteLength = 0; 533 char *Value; 534 535 536 /* Length is based upon the opcode for this field in the info table */ 537 538 switch (Info->Opcode) 539 { 540 case ACPI_DMT_FLAG0: 541 case ACPI_DMT_FLAG1: 542 case ACPI_DMT_FLAG2: 543 case ACPI_DMT_FLAG3: 544 case ACPI_DMT_FLAG4: 545 case ACPI_DMT_FLAG5: 546 case ACPI_DMT_FLAG6: 547 case ACPI_DMT_FLAG7: 548 case ACPI_DMT_FLAGS0: 549 case ACPI_DMT_FLAGS1: 550 case ACPI_DMT_FLAGS2: 551 case ACPI_DMT_FLAGS4: 552 case ACPI_DMT_FLAGS4_0: 553 case ACPI_DMT_FLAGS4_4: 554 case ACPI_DMT_FLAGS4_8: 555 case ACPI_DMT_FLAGS4_12: 556 case ACPI_DMT_FLAGS16_16: 557 case ACPI_DMT_LABEL: 558 case ACPI_DMT_EXTRA_TEXT: 559 560 ByteLength = 0; 561 break; 562 563 case ACPI_DMT_UINT8: 564 case ACPI_DMT_CHKSUM: 565 case ACPI_DMT_SPACEID: 566 case ACPI_DMT_ACCWIDTH: 567 case ACPI_DMT_IVRS: 568 case ACPI_DMT_GTDT: 569 case ACPI_DMT_MADT: 570 case ACPI_DMT_PCCT: 571 case ACPI_DMT_PMTT: 572 case ACPI_DMT_PPTT: 573 case ACPI_DMT_SDEV: 574 case ACPI_DMT_SRAT: 575 case ACPI_DMT_ASF: 576 case ACPI_DMT_HESTNTYP: 577 case ACPI_DMT_FADTPM: 578 case ACPI_DMT_EINJACT: 579 case ACPI_DMT_EINJINST: 580 case ACPI_DMT_ERSTACT: 581 case ACPI_DMT_ERSTINST: 582 case ACPI_DMT_DMAR_SCOPE: 583 584 ByteLength = 1; 585 break; 586 587 case ACPI_DMT_UINT16: 588 case ACPI_DMT_DMAR: 589 case ACPI_DMT_HEST: 590 case ACPI_DMT_HMAT: 591 case ACPI_DMT_NFIT: 592 case ACPI_DMT_PCI_PATH: 593 594 ByteLength = 2; 595 break; 596 597 case ACPI_DMT_UINT24: 598 599 ByteLength = 3; 600 break; 601 602 case ACPI_DMT_UINT32: 603 case ACPI_DMT_NAME4: 604 case ACPI_DMT_SIG: 605 case ACPI_DMT_LPIT: 606 case ACPI_DMT_TPM2: 607 608 ByteLength = 4; 609 break; 610 611 case ACPI_DMT_UINT40: 612 613 ByteLength = 5; 614 break; 615 616 case ACPI_DMT_UINT48: 617 case ACPI_DMT_NAME6: 618 619 ByteLength = 6; 620 break; 621 622 case ACPI_DMT_UINT56: 623 case ACPI_DMT_BUF7: 624 625 ByteLength = 7; 626 break; 627 628 case ACPI_DMT_UINT64: 629 case ACPI_DMT_NAME8: 630 631 ByteLength = 8; 632 break; 633 634 case ACPI_DMT_STRING: 635 636 Value = DtGetFieldValue (Field); 637 if (Value) 638 { 639 ByteLength = strlen (Value) + 1; 640 } 641 else 642 { /* At this point, this is a fatal error */ 643 644 sprintf (AslGbl_MsgBuffer, "Expected \"%s\"", Info->Name); 645 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, AslGbl_MsgBuffer); 646 return (0); 647 } 648 break; 649 650 case ACPI_DMT_GAS: 651 652 ByteLength = sizeof (ACPI_GENERIC_ADDRESS); 653 break; 654 655 case ACPI_DMT_HESTNTFY: 656 657 ByteLength = sizeof (ACPI_HEST_NOTIFY); 658 break; 659 660 case ACPI_DMT_IORTMEM: 661 662 ByteLength = sizeof (ACPI_IORT_MEMORY_ACCESS); 663 break; 664 665 case ACPI_DMT_BUFFER: 666 case ACPI_DMT_RAW_BUFFER: 667 668 Value = DtGetFieldValue (Field); 669 if (Value) 670 { 671 ByteLength = DtGetBufferLength (Value); 672 } 673 else 674 { /* At this point, this is a fatal error */ 675 676 sprintf (AslGbl_MsgBuffer, "Expected \"%s\"", Info->Name); 677 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, AslGbl_MsgBuffer); 678 return (0); 679 } 680 break; 681 682 case ACPI_DMT_BUF10: 683 684 ByteLength = 10; 685 break; 686 687 case ACPI_DMT_BUF12: 688 689 ByteLength = 12; 690 break; 691 692 case ACPI_DMT_BUF16: 693 case ACPI_DMT_UUID: 694 695 ByteLength = 16; 696 break; 697 698 case ACPI_DMT_BUF128: 699 700 ByteLength = 128; 701 break; 702 703 case ACPI_DMT_UNICODE: 704 705 Value = DtGetFieldValue (Field); 706 707 /* TBD: error if Value is NULL? (as below?) */ 708 709 ByteLength = (strlen (Value) + 1) * sizeof(UINT16); 710 break; 711 712 default: 713 714 DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid table opcode"); 715 return (0); 716 } 717 718 return (ByteLength); 719 } 720 721 722 /****************************************************************************** 723 * 724 * FUNCTION: DtSum 725 * 726 * PARAMETERS: DT_WALK_CALLBACK: 727 * Subtable - Subtable 728 * Context - Unused 729 * ReturnValue - Store the checksum of subtable 730 * 731 * RETURN: Status 732 * 733 * DESCRIPTION: Get the checksum of subtable 734 * 735 *****************************************************************************/ 736 737 static void 738 DtSum ( 739 DT_SUBTABLE *Subtable, 740 void *Context, 741 void *ReturnValue) 742 { 743 UINT8 Checksum; 744 UINT8 *Sum = ReturnValue; 745 746 747 Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length); 748 *Sum = (UINT8) (*Sum + Checksum); 749 } 750 751 752 /****************************************************************************** 753 * 754 * FUNCTION: DtSetTableChecksum 755 * 756 * PARAMETERS: ChecksumPointer - Where to return the checksum 757 * 758 * RETURN: None 759 * 760 * DESCRIPTION: Set checksum of the whole data table into the checksum field 761 * 762 *****************************************************************************/ 763 764 void 765 DtSetTableChecksum ( 766 UINT8 *ChecksumPointer) 767 { 768 UINT8 Checksum = 0; 769 UINT8 OldSum; 770 771 772 DtWalkTableTree (AslGbl_RootTable, DtSum, NULL, &Checksum); 773 774 OldSum = *ChecksumPointer; 775 Checksum = (UINT8) (Checksum - OldSum); 776 777 /* Compute the final checksum */ 778 779 Checksum = (UINT8) (0 - Checksum); 780 *ChecksumPointer = Checksum; 781 } 782 783 784 /****************************************************************************** 785 * 786 * FUNCTION: DtSetTableLength 787 * 788 * PARAMETERS: None 789 * 790 * RETURN: None 791 * 792 * DESCRIPTION: Walk the subtables and set all the length fields 793 * 794 *****************************************************************************/ 795 796 void 797 DtSetTableLength ( 798 void) 799 { 800 DT_SUBTABLE *ParentTable; 801 DT_SUBTABLE *ChildTable; 802 803 804 ParentTable = AslGbl_RootTable; 805 ChildTable = NULL; 806 807 if (!ParentTable) 808 { 809 return; 810 } 811 812 DtSetSubtableLength (ParentTable); 813 814 while (1) 815 { 816 ChildTable = DtGetNextSubtable (ParentTable, ChildTable); 817 if (ChildTable) 818 { 819 if (ChildTable->LengthField) 820 { 821 DtSetSubtableLength (ChildTable); 822 } 823 824 if (ChildTable->Child) 825 { 826 ParentTable = ChildTable; 827 ChildTable = NULL; 828 } 829 else 830 { 831 ParentTable->TotalLength += ChildTable->TotalLength; 832 if (ParentTable->LengthField) 833 { 834 DtSetSubtableLength (ParentTable); 835 } 836 } 837 } 838 else 839 { 840 ChildTable = ParentTable; 841 842 if (ChildTable == AslGbl_RootTable) 843 { 844 break; 845 } 846 847 ParentTable = DtGetParentSubtable (ParentTable); 848 849 ParentTable->TotalLength += ChildTable->TotalLength; 850 if (ParentTable->LengthField) 851 { 852 DtSetSubtableLength (ParentTable); 853 } 854 } 855 } 856 } 857 858 859 /****************************************************************************** 860 * 861 * FUNCTION: DtWalkTableTree 862 * 863 * PARAMETERS: StartTable - Subtable in the tree where walking begins 864 * UserFunction - Called during the walk 865 * Context - Passed to user function 866 * ReturnValue - The return value of UserFunction 867 * 868 * RETURN: None 869 * 870 * DESCRIPTION: Performs a depth-first walk of the subtable tree 871 * 872 *****************************************************************************/ 873 874 void 875 DtWalkTableTree ( 876 DT_SUBTABLE *StartTable, 877 DT_WALK_CALLBACK UserFunction, 878 void *Context, 879 void *ReturnValue) 880 { 881 DT_SUBTABLE *ParentTable; 882 DT_SUBTABLE *ChildTable; 883 884 885 ParentTable = StartTable; 886 ChildTable = NULL; 887 888 if (!ParentTable) 889 { 890 return; 891 } 892 893 UserFunction (ParentTable, Context, ReturnValue); 894 895 while (1) 896 { 897 ChildTable = DtGetNextSubtable (ParentTable, ChildTable); 898 if (ChildTable) 899 { 900 UserFunction (ChildTable, Context, ReturnValue); 901 902 if (ChildTable->Child) 903 { 904 ParentTable = ChildTable; 905 ChildTable = NULL; 906 } 907 } 908 else 909 { 910 ChildTable = ParentTable; 911 if (ChildTable == AslGbl_RootTable) 912 { 913 break; 914 } 915 916 ParentTable = DtGetParentSubtable (ParentTable); 917 918 if (ChildTable->Peer == StartTable) 919 { 920 break; 921 } 922 } 923 } 924 } 925