1 /****************************************************************************** 2 * 3 * Module Name: exconvrt - Object conversion routines 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2015, 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 #include "acpi.h" 117 #include "accommon.h" 118 #include "acinterp.h" 119 #include "amlcode.h" 120 121 122 #define _COMPONENT ACPI_EXECUTER 123 ACPI_MODULE_NAME ("exconvrt") 124 125 /* Local prototypes */ 126 127 static UINT32 128 AcpiExConvertToAscii ( 129 UINT64 Integer, 130 UINT16 Base, 131 UINT8 *String, 132 UINT8 MaxLength); 133 134 135 /******************************************************************************* 136 * 137 * FUNCTION: AcpiExConvertToInteger 138 * 139 * PARAMETERS: ObjDesc - Object to be converted. Must be an 140 * Integer, Buffer, or String 141 * ResultDesc - Where the new Integer object is returned 142 * Flags - Used for string conversion 143 * 144 * RETURN: Status 145 * 146 * DESCRIPTION: Convert an ACPI Object to an integer. 147 * 148 ******************************************************************************/ 149 150 ACPI_STATUS 151 AcpiExConvertToInteger ( 152 ACPI_OPERAND_OBJECT *ObjDesc, 153 ACPI_OPERAND_OBJECT **ResultDesc, 154 UINT32 Flags) 155 { 156 ACPI_OPERAND_OBJECT *ReturnDesc; 157 UINT8 *Pointer; 158 UINT64 Result; 159 UINT32 i; 160 UINT32 Count; 161 ACPI_STATUS Status; 162 163 164 ACPI_FUNCTION_TRACE_PTR (ExConvertToInteger, ObjDesc); 165 166 167 switch (ObjDesc->Common.Type) 168 { 169 case ACPI_TYPE_INTEGER: 170 171 /* No conversion necessary */ 172 173 *ResultDesc = ObjDesc; 174 return_ACPI_STATUS (AE_OK); 175 176 case ACPI_TYPE_BUFFER: 177 case ACPI_TYPE_STRING: 178 179 /* Note: Takes advantage of common buffer/string fields */ 180 181 Pointer = ObjDesc->Buffer.Pointer; 182 Count = ObjDesc->Buffer.Length; 183 break; 184 185 default: 186 187 return_ACPI_STATUS (AE_TYPE); 188 } 189 190 /* 191 * Convert the buffer/string to an integer. Note that both buffers and 192 * strings are treated as raw data - we don't convert ascii to hex for 193 * strings. 194 * 195 * There are two terminating conditions for the loop: 196 * 1) The size of an integer has been reached, or 197 * 2) The end of the buffer or string has been reached 198 */ 199 Result = 0; 200 201 /* String conversion is different than Buffer conversion */ 202 203 switch (ObjDesc->Common.Type) 204 { 205 case ACPI_TYPE_STRING: 206 /* 207 * Convert string to an integer - for most cases, the string must be 208 * hexadecimal as per the ACPI specification. The only exception (as 209 * of ACPI 3.0) is that the ToInteger() operator allows both decimal 210 * and hexadecimal strings (hex prefixed with "0x"). 211 */ 212 Status = AcpiUtStrtoul64 ((char *) Pointer, Flags, &Result); 213 if (ACPI_FAILURE (Status)) 214 { 215 return_ACPI_STATUS (Status); 216 } 217 break; 218 219 case ACPI_TYPE_BUFFER: 220 221 /* Check for zero-length buffer */ 222 223 if (!Count) 224 { 225 return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); 226 } 227 228 /* Transfer no more than an integer's worth of data */ 229 230 if (Count > AcpiGbl_IntegerByteWidth) 231 { 232 Count = AcpiGbl_IntegerByteWidth; 233 } 234 235 /* 236 * Convert buffer to an integer - we simply grab enough raw data 237 * from the buffer to fill an integer 238 */ 239 for (i = 0; i < Count; i++) 240 { 241 /* 242 * Get next byte and shift it into the Result. 243 * Little endian is used, meaning that the first byte of the buffer 244 * is the LSB of the integer 245 */ 246 Result |= (((UINT64) Pointer[i]) << (i * 8)); 247 } 248 break; 249 250 default: 251 252 /* No other types can get here */ 253 254 break; 255 } 256 257 /* Create a new integer */ 258 259 ReturnDesc = AcpiUtCreateIntegerObject (Result); 260 if (!ReturnDesc) 261 { 262 return_ACPI_STATUS (AE_NO_MEMORY); 263 } 264 265 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n", 266 ACPI_FORMAT_UINT64 (Result))); 267 268 /* Save the Result */ 269 270 (void) AcpiExTruncateFor32bitTable (ReturnDesc); 271 *ResultDesc = ReturnDesc; 272 return_ACPI_STATUS (AE_OK); 273 } 274 275 276 /******************************************************************************* 277 * 278 * FUNCTION: AcpiExConvertToBuffer 279 * 280 * PARAMETERS: ObjDesc - Object to be converted. Must be an 281 * Integer, Buffer, or String 282 * ResultDesc - Where the new buffer object is returned 283 * 284 * RETURN: Status 285 * 286 * DESCRIPTION: Convert an ACPI Object to a Buffer 287 * 288 ******************************************************************************/ 289 290 ACPI_STATUS 291 AcpiExConvertToBuffer ( 292 ACPI_OPERAND_OBJECT *ObjDesc, 293 ACPI_OPERAND_OBJECT **ResultDesc) 294 { 295 ACPI_OPERAND_OBJECT *ReturnDesc; 296 UINT8 *NewBuf; 297 298 299 ACPI_FUNCTION_TRACE_PTR (ExConvertToBuffer, ObjDesc); 300 301 302 switch (ObjDesc->Common.Type) 303 { 304 case ACPI_TYPE_BUFFER: 305 306 /* No conversion necessary */ 307 308 *ResultDesc = ObjDesc; 309 return_ACPI_STATUS (AE_OK); 310 311 312 case ACPI_TYPE_INTEGER: 313 /* 314 * Create a new Buffer object. 315 * Need enough space for one integer 316 */ 317 ReturnDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth); 318 if (!ReturnDesc) 319 { 320 return_ACPI_STATUS (AE_NO_MEMORY); 321 } 322 323 /* Copy the integer to the buffer, LSB first */ 324 325 NewBuf = ReturnDesc->Buffer.Pointer; 326 memcpy (NewBuf, 327 &ObjDesc->Integer.Value, 328 AcpiGbl_IntegerByteWidth); 329 break; 330 331 case ACPI_TYPE_STRING: 332 /* 333 * Create a new Buffer object 334 * Size will be the string length 335 * 336 * NOTE: Add one to the string length to include the null terminator. 337 * The ACPI spec is unclear on this subject, but there is existing 338 * ASL/AML code that depends on the null being transferred to the new 339 * buffer. 340 */ 341 ReturnDesc = AcpiUtCreateBufferObject ( 342 (ACPI_SIZE) ObjDesc->String.Length + 1); 343 if (!ReturnDesc) 344 { 345 return_ACPI_STATUS (AE_NO_MEMORY); 346 } 347 348 /* Copy the string to the buffer */ 349 350 NewBuf = ReturnDesc->Buffer.Pointer; 351 strncpy ((char *) NewBuf, (char *) ObjDesc->String.Pointer, 352 ObjDesc->String.Length); 353 break; 354 355 default: 356 357 return_ACPI_STATUS (AE_TYPE); 358 } 359 360 /* Mark buffer initialized */ 361 362 ReturnDesc->Common.Flags |= AOPOBJ_DATA_VALID; 363 *ResultDesc = ReturnDesc; 364 return_ACPI_STATUS (AE_OK); 365 } 366 367 368 /******************************************************************************* 369 * 370 * FUNCTION: AcpiExConvertToAscii 371 * 372 * PARAMETERS: Integer - Value to be converted 373 * Base - ACPI_STRING_DECIMAL or ACPI_STRING_HEX 374 * String - Where the string is returned 375 * DataWidth - Size of data item to be converted, in bytes 376 * 377 * RETURN: Actual string length 378 * 379 * DESCRIPTION: Convert an ACPI Integer to a hex or decimal string 380 * 381 ******************************************************************************/ 382 383 static UINT32 384 AcpiExConvertToAscii ( 385 UINT64 Integer, 386 UINT16 Base, 387 UINT8 *String, 388 UINT8 DataWidth) 389 { 390 UINT64 Digit; 391 UINT32 i; 392 UINT32 j; 393 UINT32 k = 0; 394 UINT32 HexLength; 395 UINT32 DecimalLength; 396 UINT32 Remainder; 397 BOOLEAN SupressZeros; 398 399 400 ACPI_FUNCTION_ENTRY (); 401 402 403 switch (Base) 404 { 405 case 10: 406 407 /* Setup max length for the decimal number */ 408 409 switch (DataWidth) 410 { 411 case 1: 412 413 DecimalLength = ACPI_MAX8_DECIMAL_DIGITS; 414 break; 415 416 case 4: 417 418 DecimalLength = ACPI_MAX32_DECIMAL_DIGITS; 419 break; 420 421 case 8: 422 default: 423 424 DecimalLength = ACPI_MAX64_DECIMAL_DIGITS; 425 break; 426 } 427 428 SupressZeros = TRUE; /* No leading zeros */ 429 Remainder = 0; 430 431 for (i = DecimalLength; i > 0; i--) 432 { 433 /* Divide by nth factor of 10 */ 434 435 Digit = Integer; 436 for (j = 0; j < i; j++) 437 { 438 (void) AcpiUtShortDivide (Digit, 10, &Digit, &Remainder); 439 } 440 441 /* Handle leading zeros */ 442 443 if (Remainder != 0) 444 { 445 SupressZeros = FALSE; 446 } 447 448 if (!SupressZeros) 449 { 450 String[k] = (UINT8) (ACPI_ASCII_ZERO + Remainder); 451 k++; 452 } 453 } 454 break; 455 456 case 16: 457 458 /* HexLength: 2 ascii hex chars per data byte */ 459 460 HexLength = ACPI_MUL_2 (DataWidth); 461 for (i = 0, j = (HexLength-1); i < HexLength; i++, j--) 462 { 463 /* Get one hex digit, most significant digits first */ 464 465 String[k] = (UINT8) AcpiUtHexToAsciiChar (Integer, ACPI_MUL_4 (j)); 466 k++; 467 } 468 break; 469 470 default: 471 return (0); 472 } 473 474 /* 475 * Since leading zeros are suppressed, we must check for the case where 476 * the integer equals 0 477 * 478 * Finally, null terminate the string and return the length 479 */ 480 if (!k) 481 { 482 String [0] = ACPI_ASCII_ZERO; 483 k = 1; 484 } 485 486 String [k] = 0; 487 return ((UINT32) k); 488 } 489 490 491 /******************************************************************************* 492 * 493 * FUNCTION: AcpiExConvertToString 494 * 495 * PARAMETERS: ObjDesc - Object to be converted. Must be an 496 * Integer, Buffer, or String 497 * ResultDesc - Where the string object is returned 498 * Type - String flags (base and conversion type) 499 * 500 * RETURN: Status 501 * 502 * DESCRIPTION: Convert an ACPI Object to a string 503 * 504 ******************************************************************************/ 505 506 ACPI_STATUS 507 AcpiExConvertToString ( 508 ACPI_OPERAND_OBJECT *ObjDesc, 509 ACPI_OPERAND_OBJECT **ResultDesc, 510 UINT32 Type) 511 { 512 ACPI_OPERAND_OBJECT *ReturnDesc; 513 UINT8 *NewBuf; 514 UINT32 i; 515 UINT32 StringLength = 0; 516 UINT16 Base = 16; 517 UINT8 Separator = ','; 518 519 520 ACPI_FUNCTION_TRACE_PTR (ExConvertToString, ObjDesc); 521 522 523 switch (ObjDesc->Common.Type) 524 { 525 case ACPI_TYPE_STRING: 526 527 /* No conversion necessary */ 528 529 *ResultDesc = ObjDesc; 530 return_ACPI_STATUS (AE_OK); 531 532 case ACPI_TYPE_INTEGER: 533 534 switch (Type) 535 { 536 case ACPI_EXPLICIT_CONVERT_DECIMAL: 537 538 /* Make room for maximum decimal number */ 539 540 StringLength = ACPI_MAX_DECIMAL_DIGITS; 541 Base = 10; 542 break; 543 544 default: 545 546 /* Two hex string characters for each integer byte */ 547 548 StringLength = ACPI_MUL_2 (AcpiGbl_IntegerByteWidth); 549 break; 550 } 551 552 /* 553 * Create a new String 554 * Need enough space for one ASCII integer (plus null terminator) 555 */ 556 ReturnDesc = AcpiUtCreateStringObject ((ACPI_SIZE) StringLength); 557 if (!ReturnDesc) 558 { 559 return_ACPI_STATUS (AE_NO_MEMORY); 560 } 561 562 NewBuf = ReturnDesc->Buffer.Pointer; 563 564 /* Convert integer to string */ 565 566 StringLength = AcpiExConvertToAscii (ObjDesc->Integer.Value, Base, 567 NewBuf, AcpiGbl_IntegerByteWidth); 568 569 /* Null terminate at the correct place */ 570 571 ReturnDesc->String.Length = StringLength; 572 NewBuf [StringLength] = 0; 573 break; 574 575 case ACPI_TYPE_BUFFER: 576 577 /* Setup string length, base, and separator */ 578 579 switch (Type) 580 { 581 case ACPI_EXPLICIT_CONVERT_DECIMAL: /* Used by ToDecimalString */ 582 /* 583 * From ACPI: "If Data is a buffer, it is converted to a string of 584 * decimal values separated by commas." 585 */ 586 Base = 10; 587 588 /* 589 * Calculate the final string length. Individual string values 590 * are variable length (include separator for each) 591 */ 592 for (i = 0; i < ObjDesc->Buffer.Length; i++) 593 { 594 if (ObjDesc->Buffer.Pointer[i] >= 100) 595 { 596 StringLength += 4; 597 } 598 else if (ObjDesc->Buffer.Pointer[i] >= 10) 599 { 600 StringLength += 3; 601 } 602 else 603 { 604 StringLength += 2; 605 } 606 } 607 break; 608 609 case ACPI_IMPLICIT_CONVERT_HEX: 610 /* 611 * From the ACPI spec: 612 *"The entire contents of the buffer are converted to a string of 613 * two-character hexadecimal numbers, each separated by a space." 614 */ 615 Separator = ' '; 616 StringLength = (ObjDesc->Buffer.Length * 3); 617 break; 618 619 case ACPI_EXPLICIT_CONVERT_HEX: /* Used by ToHexString */ 620 /* 621 * From ACPI: "If Data is a buffer, it is converted to a string of 622 * hexadecimal values separated by commas." 623 */ 624 StringLength = (ObjDesc->Buffer.Length * 3); 625 break; 626 627 default: 628 return_ACPI_STATUS (AE_BAD_PARAMETER); 629 } 630 631 /* 632 * Create a new string object and string buffer 633 * (-1 because of extra separator included in StringLength from above) 634 * Allow creation of zero-length strings from zero-length buffers. 635 */ 636 if (StringLength) 637 { 638 StringLength--; 639 } 640 641 ReturnDesc = AcpiUtCreateStringObject ((ACPI_SIZE) StringLength); 642 if (!ReturnDesc) 643 { 644 return_ACPI_STATUS (AE_NO_MEMORY); 645 } 646 647 NewBuf = ReturnDesc->Buffer.Pointer; 648 649 /* 650 * Convert buffer bytes to hex or decimal values 651 * (separated by commas or spaces) 652 */ 653 for (i = 0; i < ObjDesc->Buffer.Length; i++) 654 { 655 NewBuf += AcpiExConvertToAscii ( 656 (UINT64) ObjDesc->Buffer.Pointer[i], Base, 657 NewBuf, 1); 658 *NewBuf++ = Separator; /* each separated by a comma or space */ 659 } 660 661 /* 662 * Null terminate the string 663 * (overwrites final comma/space from above) 664 */ 665 if (ObjDesc->Buffer.Length) 666 { 667 NewBuf--; 668 } 669 *NewBuf = 0; 670 break; 671 672 default: 673 674 return_ACPI_STATUS (AE_TYPE); 675 } 676 677 *ResultDesc = ReturnDesc; 678 return_ACPI_STATUS (AE_OK); 679 } 680 681 682 /******************************************************************************* 683 * 684 * FUNCTION: AcpiExConvertToTargetType 685 * 686 * PARAMETERS: DestinationType - Current type of the destination 687 * SourceDesc - Source object to be converted. 688 * ResultDesc - Where the converted object is returned 689 * WalkState - Current method state 690 * 691 * RETURN: Status 692 * 693 * DESCRIPTION: Implements "implicit conversion" rules for storing an object. 694 * 695 ******************************************************************************/ 696 697 ACPI_STATUS 698 AcpiExConvertToTargetType ( 699 ACPI_OBJECT_TYPE DestinationType, 700 ACPI_OPERAND_OBJECT *SourceDesc, 701 ACPI_OPERAND_OBJECT **ResultDesc, 702 ACPI_WALK_STATE *WalkState) 703 { 704 ACPI_STATUS Status = AE_OK; 705 706 707 ACPI_FUNCTION_TRACE (ExConvertToTargetType); 708 709 710 /* Default behavior */ 711 712 *ResultDesc = SourceDesc; 713 714 /* 715 * If required by the target, 716 * perform implicit conversion on the source before we store it. 717 */ 718 switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs)) 719 { 720 case ARGI_SIMPLE_TARGET: 721 case ARGI_FIXED_TARGET: 722 case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */ 723 724 switch (DestinationType) 725 { 726 case ACPI_TYPE_LOCAL_REGION_FIELD: 727 /* 728 * Named field can always handle conversions 729 */ 730 break; 731 732 default: 733 734 /* No conversion allowed for these types */ 735 736 if (DestinationType != SourceDesc->Common.Type) 737 { 738 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 739 "Explicit operator, will store (%s) over existing type (%s)\n", 740 AcpiUtGetObjectTypeName (SourceDesc), 741 AcpiUtGetTypeName (DestinationType))); 742 Status = AE_TYPE; 743 } 744 } 745 break; 746 747 case ARGI_TARGETREF: 748 749 switch (DestinationType) 750 { 751 case ACPI_TYPE_INTEGER: 752 case ACPI_TYPE_BUFFER_FIELD: 753 case ACPI_TYPE_LOCAL_BANK_FIELD: 754 case ACPI_TYPE_LOCAL_INDEX_FIELD: 755 /* 756 * These types require an Integer operand. We can convert 757 * a Buffer or a String to an Integer if necessary. 758 */ 759 Status = AcpiExConvertToInteger (SourceDesc, ResultDesc, 760 16); 761 break; 762 763 case ACPI_TYPE_STRING: 764 /* 765 * The operand must be a String. We can convert an 766 * Integer or Buffer if necessary 767 */ 768 Status = AcpiExConvertToString (SourceDesc, ResultDesc, 769 ACPI_IMPLICIT_CONVERT_HEX); 770 break; 771 772 case ACPI_TYPE_BUFFER: 773 /* 774 * The operand must be a Buffer. We can convert an 775 * Integer or String if necessary 776 */ 777 Status = AcpiExConvertToBuffer (SourceDesc, ResultDesc); 778 break; 779 780 default: 781 782 ACPI_ERROR ((AE_INFO, "Bad destination type during conversion: 0x%X", 783 DestinationType)); 784 Status = AE_AML_INTERNAL; 785 break; 786 } 787 break; 788 789 case ARGI_REFERENCE: 790 /* 791 * CreateXxxxField cases - we are storing the field object into the name 792 */ 793 break; 794 795 default: 796 797 ACPI_ERROR ((AE_INFO, 798 "Unknown Target type ID 0x%X AmlOpcode 0x%X DestType %s", 799 GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs), 800 WalkState->Opcode, AcpiUtGetTypeName (DestinationType))); 801 Status = AE_AML_INTERNAL; 802 } 803 804 /* 805 * Source-to-Target conversion semantics: 806 * 807 * If conversion to the target type cannot be performed, then simply 808 * overwrite the target with the new object and type. 809 */ 810 if (Status == AE_TYPE) 811 { 812 Status = AE_OK; 813 } 814 815 return_ACPI_STATUS (Status); 816 } 817