1 /****************************************************************************** 2 * 3 * Module Name: dsfield - Dispatcher field routines 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/include/acpi.h> 153 #include <contrib/dev/acpica/include/accommon.h> 154 #include <contrib/dev/acpica/include/amlcode.h> 155 #include <contrib/dev/acpica/include/acdispat.h> 156 #include <contrib/dev/acpica/include/acinterp.h> 157 #include <contrib/dev/acpica/include/acnamesp.h> 158 #include <contrib/dev/acpica/include/acparser.h> 159 160 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP) 161 #include "aecommon.h" 162 #endif 163 164 165 #define _COMPONENT ACPI_DISPATCHER 166 ACPI_MODULE_NAME ("dsfield") 167 168 /* Local prototypes */ 169 170 #ifdef ACPI_ASL_COMPILER 171 #include <contrib/dev/acpica/include/acdisasm.h> 172 173 static ACPI_STATUS 174 AcpiDsCreateExternalRegion ( 175 ACPI_STATUS LookupStatus, 176 ACPI_PARSE_OBJECT *Op, 177 char *Path, 178 ACPI_WALK_STATE *WalkState, 179 ACPI_NAMESPACE_NODE **Node); 180 #endif 181 182 static ACPI_STATUS 183 AcpiDsGetFieldNames ( 184 ACPI_CREATE_FIELD_INFO *Info, 185 ACPI_WALK_STATE *WalkState, 186 ACPI_PARSE_OBJECT *Arg); 187 188 189 #ifdef ACPI_ASL_COMPILER 190 /******************************************************************************* 191 * 192 * FUNCTION: AcpiDsCreateExternalRegion (iASL Disassembler only) 193 * 194 * PARAMETERS: LookupStatus - Status from NsLookup operation 195 * Op - Op containing the Field definition and args 196 * Path - Pathname of the region 197 * ` WalkState - Current method state 198 * Node - Where the new region node is returned 199 * 200 * RETURN: Status 201 * 202 * DESCRIPTION: Add region to the external list if NOT_FOUND. Create a new 203 * region node/object. 204 * 205 ******************************************************************************/ 206 207 static ACPI_STATUS 208 AcpiDsCreateExternalRegion ( 209 ACPI_STATUS LookupStatus, 210 ACPI_PARSE_OBJECT *Op, 211 char *Path, 212 ACPI_WALK_STATE *WalkState, 213 ACPI_NAMESPACE_NODE **Node) 214 { 215 ACPI_STATUS Status; 216 ACPI_OPERAND_OBJECT *ObjDesc; 217 218 219 if (LookupStatus != AE_NOT_FOUND) 220 { 221 return (LookupStatus); 222 } 223 224 /* 225 * Table disassembly: 226 * OperationRegion not found. Generate an External for it, and 227 * insert the name into the namespace. 228 */ 229 AcpiDmAddOpToExternalList (Op, Path, ACPI_TYPE_REGION, 0, 0); 230 231 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_REGION, 232 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, WalkState, Node); 233 if (ACPI_FAILURE (Status)) 234 { 235 return (Status); 236 } 237 238 /* Must create and install a region object for the new node */ 239 240 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); 241 if (!ObjDesc) 242 { 243 return (AE_NO_MEMORY); 244 } 245 246 ObjDesc->Region.Node = *Node; 247 Status = AcpiNsAttachObject (*Node, ObjDesc, ACPI_TYPE_REGION); 248 return (Status); 249 } 250 #endif 251 252 253 /******************************************************************************* 254 * 255 * FUNCTION: AcpiDsCreateBufferField 256 * 257 * PARAMETERS: Op - Current parse op (CreateXXField) 258 * WalkState - Current state 259 * 260 * RETURN: Status 261 * 262 * DESCRIPTION: Execute the CreateField operators: 263 * CreateBitFieldOp, 264 * CreateByteFieldOp, 265 * CreateWordFieldOp, 266 * CreateDwordFieldOp, 267 * CreateQwordFieldOp, 268 * CreateFieldOp (all of which define a field in a buffer) 269 * 270 ******************************************************************************/ 271 272 ACPI_STATUS 273 AcpiDsCreateBufferField ( 274 ACPI_PARSE_OBJECT *Op, 275 ACPI_WALK_STATE *WalkState) 276 { 277 ACPI_PARSE_OBJECT *Arg; 278 ACPI_NAMESPACE_NODE *Node; 279 ACPI_STATUS Status; 280 ACPI_OPERAND_OBJECT *ObjDesc; 281 ACPI_OPERAND_OBJECT *SecondDesc = NULL; 282 UINT32 Flags; 283 284 285 ACPI_FUNCTION_TRACE (DsCreateBufferField); 286 287 288 /* 289 * Get the NameString argument (name of the new BufferField) 290 */ 291 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) 292 { 293 /* For CreateField, name is the 4th argument */ 294 295 Arg = AcpiPsGetArg (Op, 3); 296 } 297 else 298 { 299 /* For all other CreateXXXField operators, name is the 3rd argument */ 300 301 Arg = AcpiPsGetArg (Op, 2); 302 } 303 304 if (!Arg) 305 { 306 return_ACPI_STATUS (AE_AML_NO_OPERAND); 307 } 308 309 if (WalkState->DeferredNode) 310 { 311 Node = WalkState->DeferredNode; 312 } 313 else 314 { 315 /* Execute flag should always be set when this function is entered */ 316 317 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) 318 { 319 ACPI_ERROR ((AE_INFO, 320 "Parse execute mode is not set")); 321 return_ACPI_STATUS (AE_AML_INTERNAL); 322 } 323 324 /* Creating new namespace node, should not already exist */ 325 326 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | 327 ACPI_NS_ERROR_IF_FOUND; 328 329 /* 330 * Mark node temporary if we are executing a normal control 331 * method. (Don't mark if this is a module-level code method) 332 */ 333 if (WalkState->MethodNode && 334 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 335 { 336 Flags |= ACPI_NS_TEMPORARY; 337 } 338 339 /* Enter the NameString into the namespace */ 340 341 Status = AcpiNsLookup (WalkState->ScopeInfo, 342 Arg->Common.Value.String, ACPI_TYPE_ANY, 343 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); 344 if (ACPI_FAILURE (Status)) 345 { 346 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 347 Arg->Common.Value.String, Status); 348 return_ACPI_STATUS (Status); 349 } 350 } 351 352 /* 353 * We could put the returned object (Node) on the object stack for later, 354 * but for now, we will put it in the "op" object that the parser uses, 355 * so we can get it again at the end of this scope. 356 */ 357 Op->Common.Node = Node; 358 359 /* 360 * If there is no object attached to the node, this node was just created 361 * and we need to create the field object. Otherwise, this was a lookup 362 * of an existing node and we don't want to create the field object again. 363 */ 364 ObjDesc = AcpiNsGetAttachedObject (Node); 365 if (ObjDesc) 366 { 367 return_ACPI_STATUS (AE_OK); 368 } 369 370 /* 371 * The Field definition is not fully parsed at this time. 372 * (We must save the address of the AML for the buffer and index operands) 373 */ 374 375 /* Create the buffer field object */ 376 377 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER_FIELD); 378 if (!ObjDesc) 379 { 380 Status = AE_NO_MEMORY; 381 goto Cleanup; 382 } 383 384 /* 385 * Remember location in AML stream of the field unit opcode and operands 386 * -- since the buffer and index operands must be evaluated. 387 */ 388 SecondDesc = ObjDesc->Common.NextObject; 389 SecondDesc->Extra.AmlStart = Op->Named.Data; 390 SecondDesc->Extra.AmlLength = Op->Named.Length; 391 ObjDesc->BufferField.Node = Node; 392 393 /* Attach constructed field descriptors to parent node */ 394 395 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_BUFFER_FIELD); 396 if (ACPI_FAILURE (Status)) 397 { 398 goto Cleanup; 399 } 400 401 402 Cleanup: 403 404 /* Remove local reference to the object */ 405 406 AcpiUtRemoveReference (ObjDesc); 407 return_ACPI_STATUS (Status); 408 } 409 410 411 /******************************************************************************* 412 * 413 * FUNCTION: AcpiDsGetFieldNames 414 * 415 * PARAMETERS: Info - CreateField info structure 416 * WalkState - Current method state 417 * Arg - First parser arg for the field name list 418 * 419 * RETURN: Status 420 * 421 * DESCRIPTION: Process all named fields in a field declaration. Names are 422 * entered into the namespace. 423 * 424 ******************************************************************************/ 425 426 static ACPI_STATUS 427 AcpiDsGetFieldNames ( 428 ACPI_CREATE_FIELD_INFO *Info, 429 ACPI_WALK_STATE *WalkState, 430 ACPI_PARSE_OBJECT *Arg) 431 { 432 ACPI_STATUS Status; 433 UINT64 Position; 434 ACPI_PARSE_OBJECT *Child; 435 436 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP) 437 ACPI_OPERAND_OBJECT *ResultDesc; 438 ACPI_OPERAND_OBJECT *ObjDesc; 439 char *NamePath; 440 #endif 441 442 443 ACPI_FUNCTION_TRACE_PTR (DsGetFieldNames, Info); 444 445 446 /* First field starts at bit zero */ 447 448 Info->FieldBitPosition = 0; 449 450 /* Process all elements in the field list (of parse nodes) */ 451 452 while (Arg) 453 { 454 /* 455 * Four types of field elements are handled: 456 * 1) Name - Enters a new named field into the namespace 457 * 2) Offset - specifies a bit offset 458 * 3) AccessAs - changes the access mode/attributes 459 * 4) Connection - Associate a resource template with the field 460 */ 461 switch (Arg->Common.AmlOpcode) 462 { 463 case AML_INT_RESERVEDFIELD_OP: 464 465 Position = (UINT64) Info->FieldBitPosition + 466 (UINT64) Arg->Common.Value.Size; 467 468 if (Position > ACPI_UINT32_MAX) 469 { 470 ACPI_ERROR ((AE_INFO, 471 "Bit offset within field too large (> 0xFFFFFFFF)")); 472 return_ACPI_STATUS (AE_SUPPORT); 473 } 474 475 Info->FieldBitPosition = (UINT32) Position; 476 break; 477 478 case AML_INT_ACCESSFIELD_OP: 479 case AML_INT_EXTACCESSFIELD_OP: 480 /* 481 * Get new AccessType, AccessAttribute, and AccessLength fields 482 * -- to be used for all field units that follow, until the 483 * end-of-field or another AccessAs keyword is encountered. 484 * NOTE. These three bytes are encoded in the integer value 485 * of the parseop for convenience. 486 * 487 * In FieldFlags, preserve the flag bits other than the 488 * ACCESS_TYPE bits. 489 */ 490 491 /* AccessType (ByteAcc, WordAcc, etc.) */ 492 493 Info->FieldFlags = (UINT8) 494 ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) | 495 ((UINT8) ((UINT32) (Arg->Common.Value.Integer & 0x07)))); 496 497 /* AccessAttribute (AttribQuick, AttribByte, etc.) */ 498 499 Info->Attribute = (UINT8) 500 ((Arg->Common.Value.Integer >> 8) & 0xFF); 501 502 /* AccessLength (for serial/buffer protocols) */ 503 504 Info->AccessLength = (UINT8) 505 ((Arg->Common.Value.Integer >> 16) & 0xFF); 506 break; 507 508 case AML_INT_CONNECTION_OP: 509 /* 510 * Clear any previous connection. New connection is used for all 511 * fields that follow, similar to AccessAs 512 */ 513 Info->ResourceBuffer = NULL; 514 Info->ConnectionNode = NULL; 515 Info->PinNumberIndex = 0; 516 517 /* 518 * A Connection() is either an actual resource descriptor (buffer) 519 * or a named reference to a resource template 520 */ 521 Child = Arg->Common.Value.Arg; 522 if (Child->Common.AmlOpcode == AML_INT_BYTELIST_OP) 523 { 524 Info->ResourceBuffer = Child->Named.Data; 525 Info->ResourceLength = (UINT16) Child->Named.Value.Integer; 526 } 527 else 528 { 529 /* Lookup the Connection() namepath, it should already exist */ 530 531 Status = AcpiNsLookup (WalkState->ScopeInfo, 532 Child->Common.Value.Name, ACPI_TYPE_ANY, 533 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE, 534 WalkState, &Info->ConnectionNode); 535 if (ACPI_FAILURE (Status)) 536 { 537 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 538 Child->Common.Value.Name, Status); 539 return_ACPI_STATUS (Status); 540 } 541 } 542 break; 543 544 case AML_INT_NAMEDFIELD_OP: 545 546 /* Lookup the name, it should already exist */ 547 548 Status = AcpiNsLookup (WalkState->ScopeInfo, 549 (char *) &Arg->Named.Name, Info->FieldType, 550 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE, 551 WalkState, &Info->FieldNode); 552 if (ACPI_FAILURE (Status)) 553 { 554 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 555 (char *) &Arg->Named.Name, Status); 556 return_ACPI_STATUS (Status); 557 } 558 else 559 { 560 Arg->Common.Node = Info->FieldNode; 561 Info->FieldBitLength = Arg->Common.Value.Size; 562 563 /* 564 * If there is no object attached to the node, this node was 565 * just created and we need to create the field object. 566 * Otherwise, this was a lookup of an existing node and we 567 * don't want to create the field object again. 568 */ 569 if (!AcpiNsGetAttachedObject (Info->FieldNode)) 570 { 571 Status = AcpiExPrepFieldValue (Info); 572 if (ACPI_FAILURE (Status)) 573 { 574 return_ACPI_STATUS (Status); 575 } 576 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP) 577 NamePath = AcpiNsGetExternalPathname (Info->FieldNode); 578 if (ACPI_SUCCESS (AeLookupInitFileEntry (NamePath, &ObjDesc))) 579 { 580 AcpiExWriteDataToField (ObjDesc, 581 AcpiNsGetAttachedObject (Info->FieldNode), 582 &ResultDesc); 583 AcpiUtRemoveReference (ObjDesc); 584 } 585 ACPI_FREE (NamePath); 586 #endif 587 } 588 } 589 590 /* Keep track of bit position for the next field */ 591 592 Position = (UINT64) Info->FieldBitPosition + 593 (UINT64) Arg->Common.Value.Size; 594 595 if (Position > ACPI_UINT32_MAX) 596 { 597 ACPI_ERROR ((AE_INFO, 598 "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)", 599 ACPI_CAST_PTR (char, &Info->FieldNode->Name))); 600 return_ACPI_STATUS (AE_SUPPORT); 601 } 602 603 Info->FieldBitPosition += Info->FieldBitLength; 604 Info->PinNumberIndex++; /* Index relative to previous Connection() */ 605 break; 606 607 default: 608 609 ACPI_ERROR ((AE_INFO, 610 "Invalid opcode in field list: 0x%X", 611 Arg->Common.AmlOpcode)); 612 return_ACPI_STATUS (AE_AML_BAD_OPCODE); 613 } 614 615 Arg = Arg->Common.Next; 616 } 617 618 return_ACPI_STATUS (AE_OK); 619 } 620 621 622 /******************************************************************************* 623 * 624 * FUNCTION: AcpiDsCreateField 625 * 626 * PARAMETERS: Op - Op containing the Field definition and args 627 * RegionNode - Object for the containing Operation Region 628 * ` WalkState - Current method state 629 * 630 * RETURN: Status 631 * 632 * DESCRIPTION: Create a new field in the specified operation region 633 * 634 ******************************************************************************/ 635 636 ACPI_STATUS 637 AcpiDsCreateField ( 638 ACPI_PARSE_OBJECT *Op, 639 ACPI_NAMESPACE_NODE *RegionNode, 640 ACPI_WALK_STATE *WalkState) 641 { 642 ACPI_STATUS Status; 643 ACPI_PARSE_OBJECT *Arg; 644 ACPI_CREATE_FIELD_INFO Info; 645 646 647 ACPI_FUNCTION_TRACE_PTR (DsCreateField, Op); 648 649 650 /* First arg is the name of the parent OpRegion (must already exist) */ 651 652 Arg = Op->Common.Value.Arg; 653 654 if (!RegionNode) 655 { 656 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name, 657 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE, 658 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode); 659 #ifdef ACPI_ASL_COMPILER 660 Status = AcpiDsCreateExternalRegion (Status, Arg, 661 Arg->Common.Value.Name, WalkState, &RegionNode); 662 #endif 663 if (ACPI_FAILURE (Status)) 664 { 665 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 666 Arg->Common.Value.Name, Status); 667 return_ACPI_STATUS (Status); 668 } 669 } 670 671 memset (&Info, 0, sizeof (ACPI_CREATE_FIELD_INFO)); 672 673 /* Second arg is the field flags */ 674 675 Arg = Arg->Common.Next; 676 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; 677 Info.Attribute = 0; 678 679 /* Each remaining arg is a Named Field */ 680 681 Info.FieldType = ACPI_TYPE_LOCAL_REGION_FIELD; 682 Info.RegionNode = RegionNode; 683 684 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); 685 if (Info.RegionNode->Object->Region.SpaceId == ACPI_ADR_SPACE_PLATFORM_COMM && 686 !(RegionNode->Object->Field.InternalPccBuffer 687 = ACPI_ALLOCATE_ZEROED(Info.RegionNode->Object->Region.Length))) 688 { 689 return_ACPI_STATUS (AE_NO_MEMORY); 690 } 691 return_ACPI_STATUS (Status); 692 } 693 694 695 /******************************************************************************* 696 * 697 * FUNCTION: AcpiDsInitFieldObjects 698 * 699 * PARAMETERS: Op - Op containing the Field definition and args 700 * ` WalkState - Current method state 701 * 702 * RETURN: Status 703 * 704 * DESCRIPTION: For each "Field Unit" name in the argument list that is 705 * part of the field declaration, enter the name into the 706 * namespace. 707 * 708 ******************************************************************************/ 709 710 ACPI_STATUS 711 AcpiDsInitFieldObjects ( 712 ACPI_PARSE_OBJECT *Op, 713 ACPI_WALK_STATE *WalkState) 714 { 715 ACPI_STATUS Status; 716 ACPI_PARSE_OBJECT *Arg = NULL; 717 ACPI_NAMESPACE_NODE *Node; 718 UINT8 Type = 0; 719 UINT32 Flags; 720 721 722 ACPI_FUNCTION_TRACE_PTR (DsInitFieldObjects, Op); 723 724 725 /* Execute flag should always be set when this function is entered */ 726 727 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) 728 { 729 if (WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP) 730 { 731 /* BankField Op is deferred, just return OK */ 732 733 return_ACPI_STATUS (AE_OK); 734 } 735 736 ACPI_ERROR ((AE_INFO, 737 "Parse deferred mode is not set")); 738 return_ACPI_STATUS (AE_AML_INTERNAL); 739 } 740 741 /* 742 * Get the FieldList argument for this opcode. This is the start of the 743 * list of field elements. 744 */ 745 switch (WalkState->Opcode) 746 { 747 case AML_FIELD_OP: 748 749 Arg = AcpiPsGetArg (Op, 2); 750 Type = ACPI_TYPE_LOCAL_REGION_FIELD; 751 break; 752 753 case AML_BANK_FIELD_OP: 754 755 Arg = AcpiPsGetArg (Op, 4); 756 Type = ACPI_TYPE_LOCAL_BANK_FIELD; 757 break; 758 759 case AML_INDEX_FIELD_OP: 760 761 Arg = AcpiPsGetArg (Op, 3); 762 Type = ACPI_TYPE_LOCAL_INDEX_FIELD; 763 break; 764 765 default: 766 767 return_ACPI_STATUS (AE_BAD_PARAMETER); 768 } 769 770 /* Creating new namespace node(s), should not already exist */ 771 772 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | 773 ACPI_NS_ERROR_IF_FOUND; 774 775 /* 776 * Mark node(s) temporary if we are executing a normal control 777 * method. (Don't mark if this is a module-level code method) 778 */ 779 if (WalkState->MethodNode && 780 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 781 { 782 Flags |= ACPI_NS_TEMPORARY; 783 } 784 785 #ifdef ACPI_EXEC_APP 786 Flags |= ACPI_NS_OVERRIDE_IF_FOUND; 787 #endif 788 /* 789 * Walk the list of entries in the FieldList 790 * Note: FieldList can be of zero length. In this case, Arg will be NULL. 791 */ 792 while (Arg) 793 { 794 /* 795 * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested 796 * in the field names in order to enter them into the namespace. 797 */ 798 if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) 799 { 800 Status = AcpiNsLookup (WalkState->ScopeInfo, 801 (char *) &Arg->Named.Name, Type, ACPI_IMODE_LOAD_PASS1, 802 Flags, WalkState, &Node); 803 if (ACPI_FAILURE (Status)) 804 { 805 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 806 (char *) &Arg->Named.Name, Status); 807 if (Status != AE_ALREADY_EXISTS) 808 { 809 return_ACPI_STATUS (Status); 810 } 811 812 /* Name already exists, just ignore this error */ 813 } 814 815 Arg->Common.Node = Node; 816 } 817 818 /* Get the next field element in the list */ 819 820 Arg = Arg->Common.Next; 821 } 822 823 return_ACPI_STATUS (AE_OK); 824 } 825 826 827 /******************************************************************************* 828 * 829 * FUNCTION: AcpiDsCreateBankField 830 * 831 * PARAMETERS: Op - Op containing the Field definition and args 832 * RegionNode - Object for the containing Operation Region 833 * WalkState - Current method state 834 * 835 * RETURN: Status 836 * 837 * DESCRIPTION: Create a new bank field in the specified operation region 838 * 839 ******************************************************************************/ 840 841 ACPI_STATUS 842 AcpiDsCreateBankField ( 843 ACPI_PARSE_OBJECT *Op, 844 ACPI_NAMESPACE_NODE *RegionNode, 845 ACPI_WALK_STATE *WalkState) 846 { 847 ACPI_STATUS Status; 848 ACPI_PARSE_OBJECT *Arg; 849 ACPI_CREATE_FIELD_INFO Info; 850 851 852 ACPI_FUNCTION_TRACE_PTR (DsCreateBankField, Op); 853 854 855 /* First arg is the name of the parent OpRegion (must already exist) */ 856 857 Arg = Op->Common.Value.Arg; 858 if (!RegionNode) 859 { 860 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name, 861 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE, 862 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode); 863 #ifdef ACPI_ASL_COMPILER 864 Status = AcpiDsCreateExternalRegion (Status, Arg, 865 Arg->Common.Value.Name, WalkState, &RegionNode); 866 #endif 867 if (ACPI_FAILURE (Status)) 868 { 869 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 870 Arg->Common.Value.Name, Status); 871 return_ACPI_STATUS (Status); 872 } 873 } 874 875 /* Second arg is the Bank Register (Field) (must already exist) */ 876 877 Arg = Arg->Common.Next; 878 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 879 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, 880 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode); 881 if (ACPI_FAILURE (Status)) 882 { 883 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 884 Arg->Common.Value.String, Status); 885 return_ACPI_STATUS (Status); 886 } 887 888 /* 889 * Third arg is the BankValue 890 * This arg is a TermArg, not a constant 891 * It will be evaluated later, by AcpiDsEvalBankFieldOperands 892 */ 893 Arg = Arg->Common.Next; 894 895 /* Fourth arg is the field flags */ 896 897 Arg = Arg->Common.Next; 898 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; 899 900 /* Each remaining arg is a Named Field */ 901 902 Info.FieldType = ACPI_TYPE_LOCAL_BANK_FIELD; 903 Info.RegionNode = RegionNode; 904 905 /* 906 * Use Info.DataRegisterNode to store BankField Op 907 * It's safe because DataRegisterNode will never be used when create 908 * bank field \we store AmlStart and AmlLength in the BankField Op for 909 * late evaluation. Used in AcpiExPrepFieldValue(Info) 910 * 911 * TBD: Or, should we add a field in ACPI_CREATE_FIELD_INFO, like 912 * "void *ParentOp"? 913 */ 914 Info.DataRegisterNode = (ACPI_NAMESPACE_NODE*) Op; 915 916 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); 917 return_ACPI_STATUS (Status); 918 } 919 920 921 /******************************************************************************* 922 * 923 * FUNCTION: AcpiDsCreateIndexField 924 * 925 * PARAMETERS: Op - Op containing the Field definition and args 926 * RegionNode - Object for the containing Operation Region 927 * ` WalkState - Current method state 928 * 929 * RETURN: Status 930 * 931 * DESCRIPTION: Create a new index field in the specified operation region 932 * 933 ******************************************************************************/ 934 935 ACPI_STATUS 936 AcpiDsCreateIndexField ( 937 ACPI_PARSE_OBJECT *Op, 938 ACPI_NAMESPACE_NODE *RegionNode, 939 ACPI_WALK_STATE *WalkState) 940 { 941 ACPI_STATUS Status; 942 ACPI_PARSE_OBJECT *Arg; 943 ACPI_CREATE_FIELD_INFO Info; 944 945 946 ACPI_FUNCTION_TRACE_PTR (DsCreateIndexField, Op); 947 948 949 /* First arg is the name of the Index register (must already exist) */ 950 951 Arg = Op->Common.Value.Arg; 952 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 953 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, 954 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode); 955 if (ACPI_FAILURE (Status)) 956 { 957 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 958 Arg->Common.Value.String, Status); 959 return_ACPI_STATUS (Status); 960 } 961 962 /* Second arg is the data register (must already exist) */ 963 964 Arg = Arg->Common.Next; 965 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 966 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, 967 ACPI_NS_SEARCH_PARENT, WalkState, &Info.DataRegisterNode); 968 if (ACPI_FAILURE (Status)) 969 { 970 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, 971 Arg->Common.Value.String, Status); 972 return_ACPI_STATUS (Status); 973 } 974 975 /* Next arg is the field flags */ 976 977 Arg = Arg->Common.Next; 978 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; 979 980 /* Each remaining arg is a Named Field */ 981 982 Info.FieldType = ACPI_TYPE_LOCAL_INDEX_FIELD; 983 Info.RegionNode = RegionNode; 984 985 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); 986 return_ACPI_STATUS (Status); 987 } 988