1 /****************************************************************************** 2 * 3 * Module Name: aslopcode - AML opcode generation 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2018, 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 "aslcompiler.y.h" 154 #include "amlcode.h" 155 156 #define _COMPONENT ACPI_COMPILER 157 ACPI_MODULE_NAME ("aslopcodes") 158 159 160 /* Local prototypes */ 161 162 static void 163 OpcDoAccessAs ( 164 ACPI_PARSE_OBJECT *Op); 165 166 static void 167 OpcDoConnection ( 168 ACPI_PARSE_OBJECT *Op); 169 170 static void 171 OpcDoUnicode ( 172 ACPI_PARSE_OBJECT *Op); 173 174 static void 175 OpcDoEisaId ( 176 ACPI_PARSE_OBJECT *Op); 177 178 static void 179 OpcDoUuId ( 180 ACPI_PARSE_OBJECT *Op); 181 182 183 /******************************************************************************* 184 * 185 * FUNCTION: OpcAmlOpcodeUpdateWalk 186 * 187 * PARAMETERS: ASL_WALK_CALLBACK 188 * 189 * RETURN: Status 190 * 191 * DESCRIPTION: Opcode update walk, ascending callback 192 * 193 ******************************************************************************/ 194 195 ACPI_STATUS 196 OpcAmlOpcodeUpdateWalk ( 197 ACPI_PARSE_OBJECT *Op, 198 UINT32 Level, 199 void *Context) 200 { 201 202 /* 203 * Handle the Package() case where the actual opcode cannot be determined 204 * until the PackageLength operand has been folded and minimized. 205 * (PackageOp versus VarPackageOp) 206 * 207 * This is (as of ACPI 3.0) the only case where the AML opcode can change 208 * based upon the value of a parameter. 209 * 210 * The parser always inserts a VarPackage opcode, which can possibly be 211 * optimized to a Package opcode. 212 */ 213 if (Op->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE) 214 { 215 OpnDoPackage (Op); 216 } 217 218 return (AE_OK); 219 } 220 221 222 /******************************************************************************* 223 * 224 * FUNCTION: OpcAmlOpcodeWalk 225 * 226 * PARAMETERS: ASL_WALK_CALLBACK 227 * 228 * RETURN: Status 229 * 230 * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML 231 * operands. 232 * 233 ******************************************************************************/ 234 235 ACPI_STATUS 236 OpcAmlOpcodeWalk ( 237 ACPI_PARSE_OBJECT *Op, 238 UINT32 Level, 239 void *Context) 240 { 241 242 TotalParseNodes++; 243 244 OpcGenerateAmlOpcode (Op); 245 OpnGenerateAmlOperands (Op); 246 return (AE_OK); 247 } 248 249 250 /******************************************************************************* 251 * 252 * FUNCTION: OpcGetIntegerWidth 253 * 254 * PARAMETERS: Op - DEFINITION BLOCK op 255 * 256 * RETURN: none 257 * 258 * DESCRIPTION: Extract integer width from the table revision 259 * 260 ******************************************************************************/ 261 262 void 263 OpcGetIntegerWidth ( 264 ACPI_PARSE_OBJECT *Op) 265 { 266 ACPI_PARSE_OBJECT *Child; 267 268 269 if (!Op) 270 { 271 return; 272 } 273 274 if (Gbl_RevisionOverride) 275 { 276 AcpiUtSetIntegerWidth (Gbl_RevisionOverride); 277 } 278 else 279 { 280 Child = Op->Asl.Child; 281 Child = Child->Asl.Next; 282 Child = Child->Asl.Next; 283 284 /* Use the revision to set the integer width */ 285 286 AcpiUtSetIntegerWidth ((UINT8) Child->Asl.Value.Integer); 287 } 288 } 289 290 291 /******************************************************************************* 292 * 293 * FUNCTION: OpcSetOptimalIntegerSize 294 * 295 * PARAMETERS: Op - A parse tree node 296 * 297 * RETURN: Integer width, in bytes. Also sets the node AML opcode to the 298 * optimal integer AML prefix opcode. 299 * 300 * DESCRIPTION: Determine the optimal AML encoding of an integer. All leading 301 * zeros can be truncated to squeeze the integer into the 302 * minimal number of AML bytes. 303 * 304 ******************************************************************************/ 305 306 UINT32 307 OpcSetOptimalIntegerSize ( 308 ACPI_PARSE_OBJECT *Op) 309 { 310 311 #if 0 312 /* 313 * TBD: - we don't want to optimize integers in the block header, but the 314 * code below does not work correctly. 315 */ 316 if (Op->Asl.Parent && 317 Op->Asl.Parent->Asl.Parent && 318 (Op->Asl.Parent->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK)) 319 { 320 return (0); 321 } 322 #endif 323 324 /* 325 * Check for the special AML integers first - Zero, One, Ones. 326 * These are single-byte opcodes that are the smallest possible 327 * representation of an integer. 328 * 329 * This optimization is optional. 330 */ 331 if (Gbl_IntegerOptimizationFlag) 332 { 333 switch (Op->Asl.Value.Integer) 334 { 335 case 0: 336 337 Op->Asl.AmlOpcode = AML_ZERO_OP; 338 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 339 Op, "Zero"); 340 return (1); 341 342 case 1: 343 344 Op->Asl.AmlOpcode = AML_ONE_OP; 345 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 346 Op, "One"); 347 return (1); 348 349 case ACPI_UINT32_MAX: 350 351 /* Check for table integer width (32 or 64) */ 352 353 if (AcpiGbl_IntegerByteWidth == 4) 354 { 355 Op->Asl.AmlOpcode = AML_ONES_OP; 356 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 357 Op, "Ones"); 358 return (1); 359 } 360 break; 361 362 case ACPI_UINT64_MAX: 363 364 /* Check for table integer width (32 or 64) */ 365 366 if (AcpiGbl_IntegerByteWidth == 8) 367 { 368 Op->Asl.AmlOpcode = AML_ONES_OP; 369 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 370 Op, "Ones"); 371 return (1); 372 } 373 break; 374 375 default: 376 377 break; 378 } 379 } 380 381 /* Find the best fit using the various AML integer prefixes */ 382 383 if (Op->Asl.Value.Integer <= ACPI_UINT8_MAX) 384 { 385 Op->Asl.AmlOpcode = AML_BYTE_OP; 386 return (1); 387 } 388 389 if (Op->Asl.Value.Integer <= ACPI_UINT16_MAX) 390 { 391 Op->Asl.AmlOpcode = AML_WORD_OP; 392 return (2); 393 } 394 395 if (Op->Asl.Value.Integer <= ACPI_UINT32_MAX) 396 { 397 Op->Asl.AmlOpcode = AML_DWORD_OP; 398 return (4); 399 } 400 else /* 64-bit integer */ 401 { 402 if (AcpiGbl_IntegerByteWidth == 4) 403 { 404 AslError (ASL_WARNING, ASL_MSG_INTEGER_LENGTH, 405 Op, NULL); 406 407 if (!Gbl_IgnoreErrors) 408 { 409 /* Truncate the integer to 32-bit */ 410 411 Op->Asl.Value.Integer &= ACPI_UINT32_MAX; 412 413 /* Now set the optimal integer size */ 414 415 return (OpcSetOptimalIntegerSize (Op)); 416 } 417 } 418 419 Op->Asl.AmlOpcode = AML_QWORD_OP; 420 return (8); 421 } 422 } 423 424 425 /******************************************************************************* 426 * 427 * FUNCTION: OpcDoAccessAs 428 * 429 * PARAMETERS: Op - Parse node 430 * 431 * RETURN: None 432 * 433 * DESCRIPTION: Implement the ACCESS_AS ASL keyword. 434 * 435 ******************************************************************************/ 436 437 static void 438 OpcDoAccessAs ( 439 ACPI_PARSE_OBJECT *Op) 440 { 441 ACPI_PARSE_OBJECT *TypeOp; 442 ACPI_PARSE_OBJECT *AttribOp; 443 ACPI_PARSE_OBJECT *LengthOp; 444 UINT8 Attribute; 445 446 447 Op->Asl.AmlOpcodeLength = 1; 448 TypeOp = Op->Asl.Child; 449 450 /* First child is the access type */ 451 452 TypeOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; 453 TypeOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 454 455 /* Second child is the optional access attribute */ 456 457 AttribOp = TypeOp->Asl.Next; 458 if (AttribOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) 459 { 460 AttribOp->Asl.Value.Integer = 0; 461 } 462 463 AttribOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; 464 AttribOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 465 466 /* Only a few AccessAttributes support AccessLength */ 467 468 Attribute = (UINT8) AttribOp->Asl.Value.Integer; 469 if ((Attribute != AML_FIELD_ATTRIB_MULTIBYTE) && 470 (Attribute != AML_FIELD_ATTRIB_RAW_BYTES) && 471 (Attribute != AML_FIELD_ATTRIB_RAW_PROCESS)) 472 { 473 return; 474 } 475 476 Op->Asl.AmlOpcode = AML_FIELD_EXT_ACCESS_OP; 477 478 /* 479 * Child of Attributes is the AccessLength (required for Multibyte, 480 * RawBytes, RawProcess.) 481 */ 482 LengthOp = AttribOp->Asl.Child; 483 if (!LengthOp) 484 { 485 return; 486 } 487 488 /* TBD: probably can remove */ 489 490 if (LengthOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) 491 { 492 LengthOp->Asl.Value.Integer = 16; 493 } 494 495 LengthOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; 496 LengthOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 497 } 498 499 500 /******************************************************************************* 501 * 502 * FUNCTION: OpcDoConnection 503 * 504 * PARAMETERS: Op - Parse node 505 * 506 * RETURN: None 507 * 508 * DESCRIPTION: Implement the Connection ASL keyword. 509 * 510 ******************************************************************************/ 511 512 static void 513 OpcDoConnection ( 514 ACPI_PARSE_OBJECT *Op) 515 { 516 ASL_RESOURCE_NODE *Rnode; 517 ACPI_PARSE_OBJECT *BufferOp; 518 ACPI_PARSE_OBJECT *BufferLengthOp; 519 ACPI_PARSE_OBJECT *BufferDataOp; 520 ASL_RESOURCE_INFO Info; 521 UINT8 State; 522 523 524 Op->Asl.AmlOpcodeLength = 1; 525 526 if (Op->Asl.Child->Asl.AmlOpcode == AML_INT_NAMEPATH_OP) 527 { 528 return; 529 } 530 531 BufferOp = Op->Asl.Child; 532 BufferLengthOp = BufferOp->Asl.Child; 533 BufferDataOp = BufferLengthOp->Asl.Next; 534 535 Info.DescriptorTypeOp = BufferDataOp->Asl.Next; 536 Info.CurrentByteOffset = 0; 537 State = ACPI_RSTATE_NORMAL; 538 Rnode = RsDoOneResourceDescriptor (&Info, &State); 539 if (!Rnode) 540 { 541 return; /* error */ 542 } 543 544 /* 545 * Transform the nodes into the following 546 * 547 * Op -> AML_BUFFER_OP 548 * First Child -> BufferLength 549 * Second Child -> Descriptor Buffer (raw byte data) 550 */ 551 BufferOp->Asl.ParseOpcode = PARSEOP_BUFFER; 552 BufferOp->Asl.AmlOpcode = AML_BUFFER_OP; 553 BufferOp->Asl.CompileFlags = OP_AML_PACKAGE | OP_IS_RESOURCE_DESC; 554 UtSetParseOpName (BufferOp); 555 556 BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER; 557 BufferLengthOp->Asl.Value.Integer = Rnode->BufferLength; 558 (void) OpcSetOptimalIntegerSize (BufferLengthOp); 559 UtSetParseOpName (BufferLengthOp); 560 561 BufferDataOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 562 BufferDataOp->Asl.AmlOpcode = AML_RAW_DATA_CHAIN; 563 BufferDataOp->Asl.AmlOpcodeLength = 0; 564 BufferDataOp->Asl.AmlLength = Rnode->BufferLength; 565 BufferDataOp->Asl.Value.Buffer = (UINT8 *) Rnode; 566 UtSetParseOpName (BufferDataOp); 567 } 568 569 570 /******************************************************************************* 571 * 572 * FUNCTION: OpcDoUnicode 573 * 574 * PARAMETERS: Op - Parse node 575 * 576 * RETURN: None 577 * 578 * DESCRIPTION: Implement the UNICODE ASL "macro". Convert the input string 579 * to a unicode buffer. There is no Unicode AML opcode. 580 * 581 * Note: The Unicode string is 16 bits per character, no leading signature, 582 * with a 16-bit terminating NULL. 583 * 584 ******************************************************************************/ 585 586 static void 587 OpcDoUnicode ( 588 ACPI_PARSE_OBJECT *Op) 589 { 590 ACPI_PARSE_OBJECT *InitializerOp; 591 UINT32 Length; 592 UINT32 Count; 593 UINT32 i; 594 UINT8 *AsciiString; 595 UINT16 *UnicodeString; 596 ACPI_PARSE_OBJECT *BufferLengthOp; 597 598 599 /* Change op into a buffer object */ 600 601 Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST; 602 Op->Asl.ParseOpcode = PARSEOP_BUFFER; 603 UtSetParseOpName (Op); 604 605 /* Buffer Length is first, followed by the string */ 606 607 BufferLengthOp = Op->Asl.Child; 608 InitializerOp = BufferLengthOp->Asl.Next; 609 610 AsciiString = (UINT8 *) InitializerOp->Asl.Value.String; 611 612 /* Create a new buffer for the Unicode string */ 613 614 Count = strlen (InitializerOp->Asl.Value.String) + 1; 615 Length = Count * sizeof (UINT16); 616 UnicodeString = UtLocalCalloc (Length); 617 618 /* Convert to Unicode string (including null terminator) */ 619 620 for (i = 0; i < Count; i++) 621 { 622 UnicodeString[i] = (UINT16) AsciiString[i]; 623 } 624 625 /* 626 * Just set the buffer size node to be the buffer length, regardless 627 * of whether it was previously an integer or a default_arg placeholder 628 */ 629 BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER; 630 BufferLengthOp->Asl.AmlOpcode = AML_DWORD_OP; 631 BufferLengthOp->Asl.Value.Integer = Length; 632 UtSetParseOpName (BufferLengthOp); 633 634 (void) OpcSetOptimalIntegerSize (BufferLengthOp); 635 636 /* The Unicode string is a raw data buffer */ 637 638 InitializerOp->Asl.Value.Buffer = (UINT8 *) UnicodeString; 639 InitializerOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER; 640 InitializerOp->Asl.AmlLength = Length; 641 InitializerOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 642 InitializerOp->Asl.Child = NULL; 643 UtSetParseOpName (InitializerOp); 644 } 645 646 647 /******************************************************************************* 648 * 649 * FUNCTION: OpcDoEisaId 650 * 651 * PARAMETERS: Op - Parse node 652 * 653 * RETURN: None 654 * 655 * DESCRIPTION: Convert a string EISA ID to numeric representation. See the 656 * Pnp BIOS Specification for details. Here is an excerpt: 657 * 658 * A seven character ASCII representation of the product 659 * identifier compressed into a 32-bit identifier. The seven 660 * character ID consists of a three character manufacturer code, 661 * a three character hexadecimal product identifier, and a one 662 * character hexadecimal revision number. The manufacturer code 663 * is a 3 uppercase character code that is compressed into 3 5-bit 664 * values as follows: 665 * 1) Find hex ASCII value for each letter 666 * 2) Subtract 40h from each ASCII value 667 * 3) Retain 5 least significant bits for each letter by 668 * discarding upper 3 bits because they are always 0. 669 * 4) Compressed code = concatenate 0 and the 3 5-bit values 670 * 671 * The format of the compressed product identifier is as follows: 672 * Byte 0: Bit 7 - Reserved (0) 673 * Bits 6-2: - 1st character of compressed mfg code 674 * Bits 1-0 - Upper 2 bits of 2nd character of mfg code 675 * Byte 1: Bits 7-5 - Lower 3 bits of 2nd character of mfg code 676 * Bits 4-0 - 3rd character of mfg code 677 * Byte 2: Bits 7-4 - 1st hex digit of product number 678 * Bits 3-0 - 2nd hex digit of product number 679 * Byte 3: Bits 7-4 - 3st hex digit of product number 680 * Bits 3-0 - Hex digit of the revision number 681 * 682 ******************************************************************************/ 683 684 static void 685 OpcDoEisaId ( 686 ACPI_PARSE_OBJECT *Op) 687 { 688 UINT32 EisaId = 0; 689 UINT32 BigEndianId; 690 char *InString; 691 ACPI_STATUS Status = AE_OK; 692 UINT32 i; 693 694 695 InString = (char *) Op->Asl.Value.String; 696 697 /* 698 * The EISAID string must be exactly 7 characters and of the form 699 * "UUUXXXX" -- 3 uppercase letters and 4 hex digits (e.g., "PNP0001") 700 */ 701 if (strlen (InString) != 7) 702 { 703 Status = AE_BAD_PARAMETER; 704 } 705 else 706 { 707 /* Check all 7 characters for correct format */ 708 709 for (i = 0; i < 7; i++) 710 { 711 /* First 3 characters must be uppercase letters */ 712 713 if (i < 3) 714 { 715 if (!isupper ((int) InString[i])) 716 { 717 Status = AE_BAD_PARAMETER; 718 } 719 } 720 721 /* Last 4 characters must be hex digits */ 722 723 else if (!isxdigit ((int) InString[i])) 724 { 725 Status = AE_BAD_PARAMETER; 726 } 727 } 728 } 729 730 if (ACPI_FAILURE (Status)) 731 { 732 AslError (ASL_ERROR, ASL_MSG_INVALID_EISAID, Op, Op->Asl.Value.String); 733 } 734 else 735 { 736 /* Create ID big-endian first (bits are contiguous) */ 737 738 BigEndianId = 739 (UINT32) ((UINT8) (InString[0] - 0x40)) << 26 | 740 (UINT32) ((UINT8) (InString[1] - 0x40)) << 21 | 741 (UINT32) ((UINT8) (InString[2] - 0x40)) << 16 | 742 743 (AcpiUtAsciiCharToHex (InString[3])) << 12 | 744 (AcpiUtAsciiCharToHex (InString[4])) << 8 | 745 (AcpiUtAsciiCharToHex (InString[5])) << 4 | 746 AcpiUtAsciiCharToHex (InString[6]); 747 748 /* Swap to little-endian to get final ID (see function header) */ 749 750 EisaId = AcpiUtDwordByteSwap (BigEndianId); 751 } 752 753 /* 754 * Morph the Op into an integer, regardless of whether there 755 * was an error in the EISAID string 756 */ 757 Op->Asl.Value.Integer = EisaId; 758 759 Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST; 760 Op->Asl.ParseOpcode = PARSEOP_INTEGER; 761 (void) OpcSetOptimalIntegerSize (Op); 762 763 /* Op is now an integer */ 764 765 UtSetParseOpName (Op); 766 } 767 768 769 /******************************************************************************* 770 * 771 * FUNCTION: OpcDoUuId 772 * 773 * PARAMETERS: Op - Parse node 774 * 775 * RETURN: None 776 * 777 * DESCRIPTION: Convert UUID string to 16-byte buffer 778 * 779 ******************************************************************************/ 780 781 static void 782 OpcDoUuId ( 783 ACPI_PARSE_OBJECT *Op) 784 { 785 char *InString; 786 UINT8 *Buffer; 787 ACPI_STATUS Status = AE_OK; 788 ACPI_PARSE_OBJECT *NewOp; 789 790 791 InString = ACPI_CAST_PTR (char, Op->Asl.Value.String); 792 Buffer = UtLocalCalloc (16); 793 794 Status = AuValidateUuid (InString); 795 if (ACPI_FAILURE (Status)) 796 { 797 AslError (ASL_ERROR, ASL_MSG_INVALID_UUID, Op, Op->Asl.Value.String); 798 } 799 else 800 { 801 AcpiUtConvertStringToUuid (InString, Buffer); 802 } 803 804 /* Change Op to a Buffer */ 805 806 Op->Asl.ParseOpcode = PARSEOP_BUFFER; 807 Op->Common.AmlOpcode = AML_BUFFER_OP; 808 809 /* Disable further optimization */ 810 811 Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST; 812 UtSetParseOpName (Op); 813 814 /* Child node is the buffer length */ 815 816 NewOp = TrAllocateOp (PARSEOP_INTEGER); 817 818 NewOp->Asl.AmlOpcode = AML_BYTE_OP; 819 NewOp->Asl.Value.Integer = 16; 820 NewOp->Asl.Parent = Op; 821 822 Op->Asl.Child = NewOp; 823 Op = NewOp; 824 825 /* Peer to the child is the raw buffer data */ 826 827 NewOp = TrAllocateOp (PARSEOP_RAW_DATA); 828 NewOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER; 829 NewOp->Asl.AmlLength = 16; 830 NewOp->Asl.Value.String = ACPI_CAST_PTR (char, Buffer); 831 NewOp->Asl.Parent = Op->Asl.Parent; 832 833 Op->Asl.Next = NewOp; 834 } 835 836 837 /******************************************************************************* 838 * 839 * FUNCTION: OpcGenerateAmlOpcode 840 * 841 * PARAMETERS: Op - Parse node 842 * 843 * RETURN: None 844 * 845 * DESCRIPTION: Generate the AML opcode associated with the node and its 846 * parse (lex/flex) keyword opcode. Essentially implements 847 * a mapping between the parse opcodes and the actual AML opcodes. 848 * 849 ******************************************************************************/ 850 851 void 852 OpcGenerateAmlOpcode ( 853 ACPI_PARSE_OBJECT *Op) 854 { 855 UINT16 Index; 856 857 858 Index = (UINT16) (Op->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE); 859 860 Op->Asl.AmlOpcode = AslKeywordMapping[Index].AmlOpcode; 861 Op->Asl.AcpiBtype = AslKeywordMapping[Index].AcpiBtype; 862 Op->Asl.CompileFlags |= AslKeywordMapping[Index].Flags; 863 864 if (!Op->Asl.Value.Integer) 865 { 866 Op->Asl.Value.Integer = AslKeywordMapping[Index].Value; 867 } 868 869 /* Special handling for some opcodes */ 870 871 switch (Op->Asl.ParseOpcode) 872 { 873 case PARSEOP_INTEGER: 874 /* 875 * Set the opcode based on the size of the integer 876 */ 877 (void) OpcSetOptimalIntegerSize (Op); 878 break; 879 880 case PARSEOP_OFFSET: 881 882 Op->Asl.AmlOpcodeLength = 1; 883 break; 884 885 case PARSEOP_ACCESSAS: 886 887 OpcDoAccessAs (Op); 888 break; 889 890 case PARSEOP_CONNECTION: 891 892 OpcDoConnection (Op); 893 break; 894 895 case PARSEOP_EISAID: 896 897 OpcDoEisaId (Op); 898 break; 899 900 case PARSEOP_PRINTF: 901 902 OpcDoPrintf (Op); 903 break; 904 905 case PARSEOP_FPRINTF: 906 907 OpcDoFprintf (Op); 908 break; 909 910 case PARSEOP_TOPLD: 911 912 OpcDoPld (Op); 913 break; 914 915 case PARSEOP_TOUUID: 916 917 OpcDoUuId (Op); 918 break; 919 920 case PARSEOP_UNICODE: 921 922 OpcDoUnicode (Op); 923 break; 924 925 case PARSEOP_INCLUDE: 926 927 Gbl_HasIncludeFiles = TRUE; 928 break; 929 930 case PARSEOP_EXTERNAL: 931 932 if (Gbl_DoExternals == FALSE) 933 { 934 Op->Asl.Child->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; 935 Op->Asl.Child->Asl.Next->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; 936 } 937 break; 938 939 case PARSEOP_TIMER: 940 941 if (AcpiGbl_IntegerBitWidth == 32) 942 { 943 AslError (ASL_REMARK, ASL_MSG_TRUNCATION, Op, NULL); 944 } 945 break; 946 947 default: 948 949 /* Nothing to do for other opcodes */ 950 951 break; 952 } 953 954 return; 955 } 956