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 - 2021, 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 "aslcompiler.h" 153 #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 UINT32 Line = 0; 190 191 192 /* Field object could be NULL */ 193 194 if (FieldObject) 195 { 196 Line = FieldObject->Line; 197 } 198 199 /* Check if user wants to ignore this exception */ 200 201 if (AslIsExceptionIgnored (AslGbl_Files[ASL_FILE_INPUT].Filename, 202 Line, Level, MessageId)) 203 { 204 return; 205 } 206 207 if (FieldObject) 208 { 209 AslCommonError (Level, MessageId, 210 FieldObject->Line, 211 FieldObject->Line, 212 FieldObject->ByteOffset, 213 FieldObject->Column, 214 AslGbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage); 215 } 216 else 217 { 218 AslCommonError (Level, MessageId, 0, 219 0, 0, 0, 0, ExtraMessage); 220 } 221 } 222 223 224 /****************************************************************************** 225 * 226 * FUNCTION: DtNameError 227 * 228 * PARAMETERS: Level - Seriousness (Warning/error, etc.) 229 * MessageId - Index into global message buffer 230 * Op - Parse node where error happened 231 * ExtraMessage - additional error message 232 * 233 * RETURN: None 234 * 235 * DESCRIPTION: Error interface for named objects 236 * 237 *****************************************************************************/ 238 239 void 240 DtNameError ( 241 UINT8 Level, 242 UINT16 MessageId, 243 DT_FIELD *FieldObject, 244 char *ExtraMessage) 245 { 246 247 switch (Level) 248 { 249 case ASL_WARNING2: 250 case ASL_WARNING3: 251 252 if (AslGbl_WarningLevel < Level) 253 { 254 return; 255 } 256 break; 257 258 default: 259 260 break; 261 } 262 263 if (FieldObject) 264 { 265 AslCommonError (Level, MessageId, 266 FieldObject->Line, 267 FieldObject->Line, 268 FieldObject->ByteOffset, 269 FieldObject->NameColumn, 270 AslGbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage); 271 } 272 else 273 { 274 AslCommonError (Level, MessageId, 0, 275 0, 0, 0, 0, ExtraMessage); 276 } 277 } 278 279 280 /******************************************************************************* 281 * 282 * FUNCTION: DtFatal 283 * 284 * PARAMETERS: None 285 * 286 * RETURN: None 287 * 288 * DESCRIPTION: Dump the error log and abort the compiler. Used for serious 289 * compile or I/O errors 290 * 291 ******************************************************************************/ 292 293 void 294 DtFatal ( 295 UINT16 MessageId, 296 DT_FIELD *FieldObject, 297 char *ExtraMessage) 298 { 299 300 DtError (ASL_ERROR, MessageId, FieldObject, ExtraMessage); 301 302 /* 303 * TBD: remove this entire function, DtFatal 304 * 305 * We cannot abort the compiler on error, because we may be compiling a 306 * list of files. We must move on to the next file. 307 */ 308 #ifdef __OBSOLETE 309 CmCleanupAndExit (); 310 exit (1); 311 #endif 312 } 313 314 315 /******************************************************************************* 316 * 317 * FUNCTION: DtDoConstant 318 * 319 * PARAMETERS: String - Only hex constants are supported, 320 * regardless of whether the 0x prefix 321 * is used 322 * 323 * RETURN: Converted Integer 324 * 325 * DESCRIPTION: Convert a string to an integer, with overflow/error checking. 326 * 327 ******************************************************************************/ 328 329 UINT64 330 DtDoConstant ( 331 char *String) 332 { 333 UINT64 ConvertedInteger; 334 335 336 /* 337 * TBD: The ImplicitStrtoul64 function does not report overflow 338 * conditions. The input string is simply truncated. If it is 339 * desired to report overflow to the table compiler, this should 340 * somehow be added here. Note: integers that are prefixed with 0x 341 * or not are both hex integers. 342 */ 343 ConvertedInteger = AcpiUtImplicitStrtoul64 (String); 344 return (ConvertedInteger); 345 } 346 347 /****************************************************************************** 348 * 349 * FUNCTION: DtGetFieldValue 350 * 351 * PARAMETERS: Field - Current field list pointer 352 * 353 * RETURN: Field value 354 * 355 * DESCRIPTION: Get field value 356 * 357 *****************************************************************************/ 358 359 char * 360 DtGetFieldValue ( 361 DT_FIELD *Field) 362 { 363 if (!Field) 364 { 365 return (NULL); 366 } 367 368 return (Field->Value); 369 } 370 371 372 /****************************************************************************** 373 * 374 * FUNCTION: DtGetFieldType 375 * 376 * PARAMETERS: Info - Data table info 377 * 378 * RETURN: Field type 379 * 380 * DESCRIPTION: Get field type 381 * 382 *****************************************************************************/ 383 384 UINT8 385 DtGetFieldType ( 386 ACPI_DMTABLE_INFO *Info) 387 { 388 UINT8 Type; 389 390 391 /* DT_FLAG means that this is the start of a block of flag bits */ 392 /* TBD - we can make these a separate opcode later */ 393 394 if (Info->Flags & DT_FLAG) 395 { 396 return (DT_FIELD_TYPE_FLAGS_INTEGER); 397 } 398 399 /* Type is based upon the opcode for this field in the info table */ 400 401 switch (Info->Opcode) 402 { 403 case ACPI_DMT_FLAG0: 404 case ACPI_DMT_FLAG1: 405 case ACPI_DMT_FLAG2: 406 case ACPI_DMT_FLAG3: 407 case ACPI_DMT_FLAG4: 408 case ACPI_DMT_FLAG5: 409 case ACPI_DMT_FLAG6: 410 case ACPI_DMT_FLAG7: 411 case ACPI_DMT_FLAGS0: 412 case ACPI_DMT_FLAGS1: 413 case ACPI_DMT_FLAGS2: 414 case ACPI_DMT_FLAGS4: 415 case ACPI_DMT_FLAGS4_0: 416 case ACPI_DMT_FLAGS4_4: 417 case ACPI_DMT_FLAGS4_8: 418 case ACPI_DMT_FLAGS4_12: 419 case ACPI_DMT_FLAGS16_16: 420 421 Type = DT_FIELD_TYPE_FLAG; 422 break; 423 424 case ACPI_DMT_NAME4: 425 case ACPI_DMT_SIG: 426 case ACPI_DMT_NAME6: 427 case ACPI_DMT_NAME8: 428 case ACPI_DMT_STRING: 429 case ACPI_DMT_IVRS_UNTERMINATED_STRING: 430 431 Type = DT_FIELD_TYPE_STRING; 432 break; 433 434 case ACPI_DMT_BUFFER: 435 case ACPI_DMT_RAW_BUFFER: 436 case ACPI_DMT_BUF7: 437 case ACPI_DMT_BUF10: 438 case ACPI_DMT_BUF12: 439 case ACPI_DMT_BUF16: 440 case ACPI_DMT_BUF128: 441 case ACPI_DMT_PCI_PATH: 442 case ACPI_DMT_PMTT_VENDOR: 443 444 Type = DT_FIELD_TYPE_BUFFER; 445 break; 446 447 case ACPI_DMT_GAS: 448 case ACPI_DMT_HESTNTFY: 449 case ACPI_DMT_IORTMEM: 450 451 Type = DT_FIELD_TYPE_INLINE_SUBTABLE; 452 break; 453 454 case ACPI_DMT_UNICODE: 455 456 Type = DT_FIELD_TYPE_UNICODE; 457 break; 458 459 case ACPI_DMT_UUID: 460 461 Type = DT_FIELD_TYPE_UUID; 462 break; 463 464 case ACPI_DMT_DEVICE_PATH: 465 466 Type = DT_FIELD_TYPE_DEVICE_PATH; 467 break; 468 469 case ACPI_DMT_LABEL: 470 471 Type = DT_FIELD_TYPE_LABEL; 472 break; 473 474 default: 475 476 Type = DT_FIELD_TYPE_INTEGER; 477 break; 478 } 479 480 return (Type); 481 } 482 483 484 /****************************************************************************** 485 * 486 * FUNCTION: DtGetBufferLength 487 * 488 * PARAMETERS: Buffer - List of integers, 489 * for example "10 3A 4F 2E" 490 * 491 * RETURN: Count of integer 492 * 493 * DESCRIPTION: Get length of bytes needed to store the integers 494 * 495 *****************************************************************************/ 496 497 UINT32 498 DtGetBufferLength ( 499 char *Buffer) 500 { 501 UINT32 ByteLength = 0; 502 503 504 while (*Buffer) 505 { 506 if (*Buffer == ' ') 507 { 508 ByteLength++; 509 510 while (*Buffer == ' ') 511 { 512 Buffer++; 513 } 514 } 515 516 Buffer++; 517 } 518 519 return (++ByteLength); 520 } 521 522 523 /****************************************************************************** 524 * 525 * FUNCTION: DtGetFieldLength 526 * 527 * PARAMETERS: Field - Current field 528 * Info - Data table info 529 * 530 * RETURN: Field length 531 * 532 * DESCRIPTION: Get length of bytes needed to compile the field 533 * 534 * Note: This function must remain in sync with AcpiDmDumpTable. 535 * 536 *****************************************************************************/ 537 538 UINT32 539 DtGetFieldLength ( 540 DT_FIELD *Field, 541 ACPI_DMTABLE_INFO *Info) 542 { 543 UINT32 ByteLength = 0; 544 char *Value; 545 546 547 /* Length is based upon the opcode for this field in the info table */ 548 549 switch (Info->Opcode) 550 { 551 case ACPI_DMT_FLAG0: 552 case ACPI_DMT_FLAG1: 553 case ACPI_DMT_FLAG2: 554 case ACPI_DMT_FLAG3: 555 case ACPI_DMT_FLAG4: 556 case ACPI_DMT_FLAG5: 557 case ACPI_DMT_FLAG6: 558 case ACPI_DMT_FLAG7: 559 case ACPI_DMT_FLAGS0: 560 case ACPI_DMT_FLAGS1: 561 case ACPI_DMT_FLAGS2: 562 case ACPI_DMT_FLAGS4: 563 case ACPI_DMT_FLAGS4_0: 564 case ACPI_DMT_FLAGS4_4: 565 case ACPI_DMT_FLAGS4_8: 566 case ACPI_DMT_FLAGS4_12: 567 case ACPI_DMT_FLAGS16_16: 568 case ACPI_DMT_LABEL: 569 case ACPI_DMT_EXTRA_TEXT: 570 571 ByteLength = 0; 572 break; 573 574 case ACPI_DMT_UINT8: 575 case ACPI_DMT_CHKSUM: 576 case ACPI_DMT_SPACEID: 577 case ACPI_DMT_ACCWIDTH: 578 case ACPI_DMT_CEDT: 579 case ACPI_DMT_IVRS: 580 case ACPI_DMT_IVRS_DE: 581 case ACPI_DMT_GTDT: 582 case ACPI_DMT_MADT: 583 case ACPI_DMT_PCCT: 584 case ACPI_DMT_PMTT: 585 case ACPI_DMT_PPTT: 586 case ACPI_DMT_RGRT: 587 case ACPI_DMT_SDEV: 588 case ACPI_DMT_SRAT: 589 case ACPI_DMT_ASF: 590 case ACPI_DMT_HESTNTYP: 591 case ACPI_DMT_FADTPM: 592 case ACPI_DMT_EINJACT: 593 case ACPI_DMT_EINJINST: 594 case ACPI_DMT_ERSTACT: 595 case ACPI_DMT_ERSTINST: 596 case ACPI_DMT_DMAR_SCOPE: 597 case ACPI_DMT_VIOT: 598 599 ByteLength = 1; 600 break; 601 602 case ACPI_DMT_UINT16: 603 case ACPI_DMT_DMAR: 604 case ACPI_DMT_HEST: 605 case ACPI_DMT_HMAT: 606 case ACPI_DMT_NFIT: 607 case ACPI_DMT_PCI_PATH: 608 case ACPI_DMT_PHAT: 609 610 ByteLength = 2; 611 break; 612 613 case ACPI_DMT_UINT24: 614 615 ByteLength = 3; 616 break; 617 618 case ACPI_DMT_UINT32: 619 case ACPI_DMT_NAME4: 620 case ACPI_DMT_SIG: 621 case ACPI_DMT_LPIT: 622 case ACPI_DMT_TPM2: 623 624 ByteLength = 4; 625 break; 626 627 case ACPI_DMT_UINT40: 628 629 ByteLength = 5; 630 break; 631 632 case ACPI_DMT_UINT48: 633 case ACPI_DMT_NAME6: 634 635 ByteLength = 6; 636 break; 637 638 case ACPI_DMT_UINT56: 639 case ACPI_DMT_BUF7: 640 641 ByteLength = 7; 642 break; 643 644 case ACPI_DMT_UINT64: 645 case ACPI_DMT_NAME8: 646 647 ByteLength = 8; 648 break; 649 650 case ACPI_DMT_STRING: 651 652 Value = DtGetFieldValue (Field); 653 if (Value) 654 { 655 ByteLength = strlen (Value) + 1; 656 } 657 else 658 { /* At this point, this is a fatal error */ 659 660 sprintf (AslGbl_MsgBuffer, "Expected \"%s\"", Info->Name); 661 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, AslGbl_MsgBuffer); 662 return (0); 663 } 664 break; 665 666 case ACPI_DMT_IVRS_UNTERMINATED_STRING: 667 668 Value = DtGetFieldValue (Field); 669 if (Value) 670 { 671 ByteLength = strlen (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_GAS: 683 684 ByteLength = sizeof (ACPI_GENERIC_ADDRESS); 685 break; 686 687 case ACPI_DMT_HESTNTFY: 688 689 ByteLength = sizeof (ACPI_HEST_NOTIFY); 690 break; 691 692 case ACPI_DMT_IORTMEM: 693 694 ByteLength = sizeof (ACPI_IORT_MEMORY_ACCESS); 695 break; 696 697 case ACPI_DMT_BUFFER: 698 case ACPI_DMT_RAW_BUFFER: 699 case ACPI_DMT_PMTT_VENDOR: 700 701 Value = DtGetFieldValue (Field); 702 if (Value) 703 { 704 ByteLength = DtGetBufferLength (Value); 705 } 706 else 707 { /* At this point, this is a fatal error */ 708 709 sprintf (AslGbl_MsgBuffer, "Expected \"%s\"", Info->Name); 710 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, AslGbl_MsgBuffer); 711 return (0); 712 } 713 break; 714 715 case ACPI_DMT_BUF10: 716 717 ByteLength = 10; 718 break; 719 720 case ACPI_DMT_BUF12: 721 722 ByteLength = 12; 723 break; 724 725 case ACPI_DMT_BUF16: 726 case ACPI_DMT_UUID: 727 728 ByteLength = 16; 729 break; 730 731 case ACPI_DMT_BUF128: 732 733 ByteLength = 128; 734 break; 735 736 case ACPI_DMT_UNICODE: 737 738 Value = DtGetFieldValue (Field); 739 740 /* TBD: error if Value is NULL? (as below?) */ 741 742 ByteLength = (strlen (Value) + 1) * sizeof(UINT16); 743 break; 744 745 default: 746 747 DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid table opcode"); 748 return (0); 749 } 750 751 return (ByteLength); 752 } 753 754 755 /****************************************************************************** 756 * 757 * FUNCTION: DtSum 758 * 759 * PARAMETERS: DT_WALK_CALLBACK: 760 * Subtable - Subtable 761 * Context - Unused 762 * ReturnValue - Store the checksum of subtable 763 * 764 * RETURN: Status 765 * 766 * DESCRIPTION: Get the checksum of subtable 767 * 768 *****************************************************************************/ 769 770 static void 771 DtSum ( 772 DT_SUBTABLE *Subtable, 773 void *Context, 774 void *ReturnValue) 775 { 776 UINT8 Checksum; 777 UINT8 *Sum = ReturnValue; 778 779 780 Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length); 781 *Sum = (UINT8) (*Sum + Checksum); 782 } 783 784 785 /****************************************************************************** 786 * 787 * FUNCTION: DtSetTableChecksum 788 * 789 * PARAMETERS: ChecksumPointer - Where to return the checksum 790 * 791 * RETURN: None 792 * 793 * DESCRIPTION: Set checksum of the whole data table into the checksum field 794 * 795 *****************************************************************************/ 796 797 void 798 DtSetTableChecksum ( 799 UINT8 *ChecksumPointer) 800 { 801 UINT8 Checksum = 0; 802 UINT8 OldSum; 803 804 805 DtWalkTableTree (AslGbl_RootTable, DtSum, NULL, &Checksum); 806 807 OldSum = *ChecksumPointer; 808 Checksum = (UINT8) (Checksum - OldSum); 809 810 /* Compute the final checksum */ 811 812 Checksum = (UINT8) (0 - Checksum); 813 *ChecksumPointer = Checksum; 814 } 815 816 817 /****************************************************************************** 818 * 819 * FUNCTION: DtSetTableLength 820 * 821 * PARAMETERS: None 822 * 823 * RETURN: None 824 * 825 * DESCRIPTION: Walk the subtables and set all the length fields 826 * 827 *****************************************************************************/ 828 829 void 830 DtSetTableLength ( 831 void) 832 { 833 DT_SUBTABLE *ParentTable; 834 DT_SUBTABLE *ChildTable; 835 836 837 ParentTable = AslGbl_RootTable; 838 ChildTable = NULL; 839 840 if (!ParentTable) 841 { 842 return; 843 } 844 845 DtSetSubtableLength (ParentTable); 846 847 while (1) 848 { 849 ChildTable = DtGetNextSubtable (ParentTable, ChildTable); 850 if (ChildTable) 851 { 852 if (ChildTable->LengthField) 853 { 854 DtSetSubtableLength (ChildTable); 855 } 856 857 if (ChildTable->Child) 858 { 859 ParentTable = ChildTable; 860 ChildTable = NULL; 861 } 862 else 863 { 864 ParentTable->TotalLength += ChildTable->TotalLength; 865 if (ParentTable->LengthField) 866 { 867 DtSetSubtableLength (ParentTable); 868 } 869 } 870 } 871 else 872 { 873 ChildTable = ParentTable; 874 875 if (ChildTable == AslGbl_RootTable) 876 { 877 break; 878 } 879 880 ParentTable = DtGetParentSubtable (ParentTable); 881 882 ParentTable->TotalLength += ChildTable->TotalLength; 883 if (ParentTable->LengthField) 884 { 885 DtSetSubtableLength (ParentTable); 886 } 887 } 888 } 889 } 890 891 892 /****************************************************************************** 893 * 894 * FUNCTION: DtWalkTableTree 895 * 896 * PARAMETERS: StartTable - Subtable in the tree where walking begins 897 * UserFunction - Called during the walk 898 * Context - Passed to user function 899 * ReturnValue - The return value of UserFunction 900 * 901 * RETURN: None 902 * 903 * DESCRIPTION: Performs a depth-first walk of the subtable tree 904 * 905 *****************************************************************************/ 906 907 void 908 DtWalkTableTree ( 909 DT_SUBTABLE *StartTable, 910 DT_WALK_CALLBACK UserFunction, 911 void *Context, 912 void *ReturnValue) 913 { 914 DT_SUBTABLE *ParentTable; 915 DT_SUBTABLE *ChildTable; 916 917 918 ParentTable = StartTable; 919 ChildTable = NULL; 920 921 if (!ParentTable) 922 { 923 return; 924 } 925 926 UserFunction (ParentTable, Context, ReturnValue); 927 928 while (1) 929 { 930 ChildTable = DtGetNextSubtable (ParentTable, ChildTable); 931 if (ChildTable) 932 { 933 UserFunction (ChildTable, Context, ReturnValue); 934 935 if (ChildTable->Child) 936 { 937 ParentTable = ChildTable; 938 ChildTable = NULL; 939 } 940 } 941 else 942 { 943 ChildTable = ParentTable; 944 if (ChildTable == AslGbl_RootTable) 945 { 946 break; 947 } 948 949 ParentTable = DtGetParentSubtable (ParentTable); 950 951 if (ChildTable->Peer == StartTable) 952 { 953 break; 954 } 955 } 956 } 957 } 958