1/****************************************************************************** 2 * 3 * Module Name: dmrestag - Add tags to resource descriptors (Application-level) 4 * 5 *****************************************************************************/ 6 7/* 8 * Copyright (C) 2000 - 2011, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 45#include <contrib/dev/acpica/include/acpi.h> 46#include <contrib/dev/acpica/include/accommon.h> 47#include <contrib/dev/acpica/include/acparser.h> 48#include <contrib/dev/acpica/include/acdisasm.h> 49#include <contrib/dev/acpica/include/acnamesp.h> 50#include <contrib/dev/acpica/include/amlcode.h> 51 52/* This module used for application-level code only */ 53 54#define _COMPONENT ACPI_CA_DISASSEMBLER 55 ACPI_MODULE_NAME ("dmrestag") 56 57/* Local prototypes */ 58 59static void 60AcpiDmUpdateResourceName ( 61 ACPI_NAMESPACE_NODE *ResourceNode); 62 63static char * 64AcpiDmSearchTagList ( 65 UINT32 BitIndex, 66 ACPI_RESOURCE_TAG *TagList); 67 68static char * 69AcpiDmGetResourceTag ( 70 UINT32 BitIndex, 71 AML_RESOURCE *Resource, 72 UINT8 ResourceIndex); 73 74static char * 75AcpiGetTagPathname ( 76 ACPI_NAMESPACE_NODE *BufferNode, 77 ACPI_NAMESPACE_NODE *ResourceNode, 78 UINT32 BitIndex); 79 80static ACPI_NAMESPACE_NODE * 81AcpiDmGetResourceNode ( 82 ACPI_NAMESPACE_NODE *BufferNode, 83 UINT32 BitIndex); 84 85static ACPI_STATUS 86AcpiDmAddResourceToNamespace ( 87 UINT8 *Aml, 88 UINT32 Length, 89 UINT32 Offset, 90 UINT8 ResourceIndex, 91 void *Context); 92 93static void 94AcpiDmAddResourcesToNamespace ( 95 ACPI_NAMESPACE_NODE *BufferNode, 96 ACPI_PARSE_OBJECT *Op); 97 98 99/****************************************************************************** 100 * 101 * Resource Tag tables 102 * 103 * These are the predefined tags that refer to elements of a resource 104 * descriptor. Each name and offset is defined in the ACPI specification. 105 * 106 * Each table entry contains the bit offset of the field and the associated 107 * name. 108 * 109 ******************************************************************************/ 110 111static ACPI_RESOURCE_TAG AcpiDmIrqTags[] = 112{ 113 {( 1 * 8), ACPI_RESTAG_INTERRUPT}, 114 {( 3 * 8) + 0, ACPI_RESTAG_INTERRUPTTYPE}, 115 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTLEVEL}, 116 {( 3 * 8) + 4, ACPI_RESTAG_INTERRUPTSHARE}, 117 {0, NULL} 118}; 119 120static ACPI_RESOURCE_TAG AcpiDmDmaTags[] = 121{ 122 {( 1 * 8), ACPI_RESTAG_DMA}, 123 {( 2 * 8) + 0, ACPI_RESTAG_XFERTYPE}, 124 {( 2 * 8) + 2, ACPI_RESTAG_BUSMASTER}, 125 {( 2 * 8) + 5, ACPI_RESTAG_DMATYPE}, 126 {0, NULL} 127}; 128 129static ACPI_RESOURCE_TAG AcpiDmIoTags[] = 130{ 131 {( 1 * 8) + 0, ACPI_RESTAG_DECODE}, 132 {( 2 * 8), ACPI_RESTAG_MINADDR}, 133 {( 4 * 8), ACPI_RESTAG_MAXADDR}, 134 {( 6 * 8), ACPI_RESTAG_ALIGNMENT}, 135 {( 7 * 8), ACPI_RESTAG_LENGTH}, 136 {0, NULL} 137}; 138 139static ACPI_RESOURCE_TAG AcpiDmFixedIoTags[] = 140{ 141 {( 1 * 8), ACPI_RESTAG_BASEADDRESS}, 142 {( 3 * 8), ACPI_RESTAG_LENGTH}, 143 {0, NULL} 144}; 145 146static ACPI_RESOURCE_TAG AcpiDmMemory24Tags[] = 147{ 148 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 149 {( 4 * 8), ACPI_RESTAG_MINADDR}, 150 {( 6 * 8), ACPI_RESTAG_MAXADDR}, 151 {( 8 * 8), ACPI_RESTAG_ALIGNMENT}, 152 {(10 * 8), ACPI_RESTAG_LENGTH}, 153 {0, NULL} 154}; 155 156static ACPI_RESOURCE_TAG AcpiDmRegisterTags[] = 157{ 158 {( 3 * 8), ACPI_RESTAG_ADDRESSSPACE}, 159 {( 4 * 8), ACPI_RESTAG_REGISTERBITWIDTH}, 160 {( 5 * 8), ACPI_RESTAG_REGISTERBITOFFSET}, 161 {( 6 * 8), ACPI_RESTAG_ACCESSSIZE}, 162 {( 7 * 8), ACPI_RESTAG_ADDRESS}, 163 {0, NULL} 164}; 165 166static ACPI_RESOURCE_TAG AcpiDmMemory32Tags[] = 167{ 168 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 169 {( 4 * 8), ACPI_RESTAG_MINADDR}, 170 {( 8 * 8), ACPI_RESTAG_MAXADDR}, 171 {(12 * 8), ACPI_RESTAG_ALIGNMENT}, 172 {(16 * 8), ACPI_RESTAG_LENGTH}, 173 {0, NULL} 174}; 175 176static ACPI_RESOURCE_TAG AcpiDmFixedMemory32Tags[] = 177{ 178 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 179 {( 4 * 8), ACPI_RESTAG_BASEADDRESS}, 180 {( 8 * 8), ACPI_RESTAG_LENGTH}, 181 {0, NULL} 182}; 183 184static ACPI_RESOURCE_TAG AcpiDmInterruptTags[] = 185{ 186 {( 3 * 8) + 1, ACPI_RESTAG_INTERRUPTTYPE}, 187 {( 3 * 8) + 2, ACPI_RESTAG_INTERRUPTLEVEL}, 188 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 189 {( 5 * 8), ACPI_RESTAG_INTERRUPT}, 190 {0, NULL} 191}; 192 193static ACPI_RESOURCE_TAG AcpiDmAddress16Tags[] = 194{ 195 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 196 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 197 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 198 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 199 {( 8 * 8), ACPI_RESTAG_MINADDR}, 200 {(10 * 8), ACPI_RESTAG_MAXADDR}, 201 {(12 * 8), ACPI_RESTAG_TRANSLATION}, 202 {(14 * 8), ACPI_RESTAG_LENGTH}, 203 {0, NULL} 204}; 205 206static ACPI_RESOURCE_TAG AcpiDmAddress32Tags[] = 207{ 208 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 209 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 210 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 211 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 212 {(10 * 8), ACPI_RESTAG_MINADDR}, 213 {(14 * 8), ACPI_RESTAG_MAXADDR}, 214 {(18 * 8), ACPI_RESTAG_TRANSLATION}, 215 {(22 * 8), ACPI_RESTAG_LENGTH}, 216 {0, NULL} 217}; 218 219static ACPI_RESOURCE_TAG AcpiDmAddress64Tags[] = 220{ 221 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 222 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 223 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 224 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 225 {(14 * 8), ACPI_RESTAG_MINADDR}, 226 {(22 * 8), ACPI_RESTAG_MAXADDR}, 227 {(30 * 8), ACPI_RESTAG_TRANSLATION}, 228 {(38 * 8), ACPI_RESTAG_LENGTH}, 229 {0, NULL} 230}; 231 232static ACPI_RESOURCE_TAG AcpiDmExtendedAddressTags[] = 233{ 234 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 235 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 236 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 237 {( 8 * 8), ACPI_RESTAG_GRANULARITY}, 238 {(16 * 8), ACPI_RESTAG_MINADDR}, 239 {(24 * 8), ACPI_RESTAG_MAXADDR}, 240 {(32 * 8), ACPI_RESTAG_TRANSLATION}, 241 {(40 * 8), ACPI_RESTAG_LENGTH}, 242 {(48 * 8), ACPI_RESTAG_TYPESPECIFICATTRIBUTES}, 243 {0, NULL} 244}; 245 246/* Special-case tables for the type-specific flags */ 247 248static ACPI_RESOURCE_TAG AcpiDmMemoryFlagTags[] = 249{ 250 {( 5 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 251 {( 5 * 8) + 1, ACPI_RESTAG_MEMTYPE}, 252 {( 5 * 8) + 3, ACPI_RESTAG_MEMATTRIBUTES}, 253 {( 5 * 8) + 5, ACPI_RESTAG_TYPE}, 254 {0, NULL} 255}; 256 257static ACPI_RESOURCE_TAG AcpiDmIoFlagTags[] = 258{ 259 {( 5 * 8) + 0, ACPI_RESTAG_RANGETYPE}, 260 {( 5 * 8) + 4, ACPI_RESTAG_TYPE}, 261 {( 5 * 8) + 5, ACPI_RESTAG_TRANSTYPE}, 262 {0, NULL} 263}; 264 265 266/* Dispatch table used to obtain the correct tag table for a descriptor */ 267 268static ACPI_RESOURCE_TAG *AcpiGbl_ResourceTags [] = 269{ 270 /* Small descriptors */ 271 272 NULL, /* 0x00, Reserved */ 273 NULL, /* 0x01, Reserved */ 274 NULL, /* 0x02, Reserved */ 275 NULL, /* 0x03, Reserved */ 276 AcpiDmIrqTags, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ 277 AcpiDmDmaTags, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ 278 NULL, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ 279 NULL, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ 280 AcpiDmIoTags, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ 281 AcpiDmFixedIoTags, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ 282 NULL, /* 0x0A, Reserved */ 283 NULL, /* 0x0B, Reserved */ 284 NULL, /* 0x0C, Reserved */ 285 NULL, /* 0x0D, Reserved */ 286 NULL, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ 287 NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ 288 289 /* Large descriptors */ 290 291 NULL, /* 0x00, Reserved */ 292 AcpiDmMemory24Tags, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ 293 AcpiDmRegisterTags, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ 294 NULL, /* 0x03, Reserved */ 295 NULL, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ 296 AcpiDmMemory32Tags, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ 297 AcpiDmFixedMemory32Tags, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ 298 AcpiDmAddress32Tags, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ 299 AcpiDmAddress16Tags, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ 300 AcpiDmInterruptTags, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ 301 AcpiDmAddress64Tags, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ 302 AcpiDmExtendedAddressTags /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ 303}; 304 305 306/* 307 * Globals used to generate unique resource descriptor names. We use names that 308 * start with underscore and a prefix letter that is not used by other ACPI 309 * reserved names. To this, we append hex 0x00 through 0xFF. These 5 prefixes 310 * allow for 5*256 = 1280 unique names, probably sufficient for any single ASL 311 * file. If this becomes too small, we can use alpha+numerals for a total 312 * of 5*36*36 = 6480. 313 */ 314#define ACPI_NUM_RES_PREFIX 5 315 316static UINT32 AcpiGbl_NextResourceId = 0; 317static UINT8 AcpiGbl_NextPrefix = 0; 318static char AcpiGbl_Prefix[ACPI_NUM_RES_PREFIX] = 319 {'Y','Z','J','K','X'}; 320 321 322/******************************************************************************* 323 * 324 * FUNCTION: AcpiDmCheckResourceReference 325 * 326 * PARAMETERS: Op - Parse Op for the AML opcode 327 * WalkState - Current walk state (with valid scope) 328 * 329 * RETURN: None 330 * 331 * DESCRIPTION: Convert a reference to a resource descriptor to a symbolic 332 * reference if possible 333 * 334 * NOTE: Bit index is used to transparently handle both resource bit 335 * fields and byte fields. 336 * 337 ******************************************************************************/ 338 339void 340AcpiDmCheckResourceReference ( 341 ACPI_PARSE_OBJECT *Op, 342 ACPI_WALK_STATE *WalkState) 343{ 344 ACPI_STATUS Status; 345 ACPI_PARSE_OBJECT *BufferNameOp; 346 ACPI_PARSE_OBJECT *IndexOp; 347 ACPI_NAMESPACE_NODE *BufferNode; 348 ACPI_NAMESPACE_NODE *ResourceNode; 349 const ACPI_OPCODE_INFO *OpInfo; 350 char *Pathname; 351 UINT32 BitIndex; 352 353 354 /* We are only interested in the CreateXxxxField opcodes */ 355 356 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 357 if (OpInfo->Type != AML_TYPE_CREATE_FIELD) 358 { 359 return; 360 } 361 362 /* Get the buffer term operand */ 363 364 BufferNameOp = AcpiPsGetDepthNext (NULL, Op); 365 366 /* Must be a named buffer, not an arg or local or method call */ 367 368 if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP) 369 { 370 return; 371 } 372 373 /* Get the Index term, must be an integer constant to convert */ 374 375 IndexOp = BufferNameOp->Common.Next; 376 OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode); 377 if (OpInfo->ObjectType != ACPI_TYPE_INTEGER) 378 { 379 return; 380 } 381 382 /* Get the bit offset of the descriptor within the buffer */ 383 384 if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) || 385 (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)) 386 { 387 /* Index operand is a bit offset */ 388 389 BitIndex = (UINT32) IndexOp->Common.Value.Integer; 390 } 391 else 392 { 393 /* Index operand is a byte offset, convert to bits */ 394 395 BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer); 396 } 397 398 /* Lookup the buffer in the namespace */ 399 400 Status = AcpiNsLookup (WalkState->ScopeInfo, 401 BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER, 402 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, 403 &BufferNode); 404 if (ACPI_FAILURE (Status)) 405 { 406 return; 407 } 408 409 /* Validate object type, we must have a buffer */ 410 411 if (BufferNode->Type != ACPI_TYPE_BUFFER) 412 { 413 return; 414 } 415 416 /* Find the resource descriptor node corresponding to the index */ 417 418 ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex); 419 if (!ResourceNode) 420 { 421 return; 422 } 423 424 /* Translate the Index to a resource tag pathname */ 425 426 Pathname = AcpiGetTagPathname (BufferNode, ResourceNode, BitIndex); 427 if (Pathname) 428 { 429 /* Complete the conversion of the Index to a symbol */ 430 431 IndexOp->Common.AmlOpcode = AML_INT_NAMEPATH_OP; 432 IndexOp->Common.Value.String = Pathname; 433 } 434} 435 436 437/******************************************************************************* 438 * 439 * FUNCTION: AcpiDmGetResourceNode 440 * 441 * PARAMETERS: BufferNode - Node for the parent buffer 442 * BitIndex - Index into the resource descriptor 443 * 444 * RETURN: Namespace node for the resource descriptor. NULL if not found 445 * 446 * DESCRIPTION: Find a resource descriptor that corresponds to the bit index 447 * 448 ******************************************************************************/ 449 450static ACPI_NAMESPACE_NODE * 451AcpiDmGetResourceNode ( 452 ACPI_NAMESPACE_NODE *BufferNode, 453 UINT32 BitIndex) 454{ 455 ACPI_NAMESPACE_NODE *Node; 456 UINT32 ByteIndex = ACPI_DIV_8 (BitIndex); 457 458 459 /* 460 * Child list contains an entry for each resource descriptor. Find 461 * the descriptor that corresponds to the Index. 462 * 463 * If there are no children, this is not a resource template 464 */ 465 Node = BufferNode->Child; 466 while (Node) 467 { 468 /* 469 * Check if the Index falls within this resource. 470 * 471 * Value contains the resource offset, Object contains the resource 472 * length (both in bytes) 473 */ 474 if ((ByteIndex >= Node->Value) && 475 (ByteIndex < (Node->Value + Node->Length))) 476 { 477 return (Node); 478 } 479 480 Node = Node->Peer; 481 } 482 483 return (NULL); 484} 485 486 487/******************************************************************************* 488 * 489 * FUNCTION: AcpiGetTagPathname 490 * 491 * PARAMETERS: BufferNode - Node for the parent buffer 492 * ResourceNode - Node for a resource descriptor 493 * BitIndex - Index into the resource descriptor 494 * 495 * RETURN: Full pathname for a resource tag. NULL if no match. 496 * Path is returned in AML (packed) format. 497 * 498 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname) 499 * 500 ******************************************************************************/ 501 502static char * 503AcpiGetTagPathname ( 504 ACPI_NAMESPACE_NODE *BufferNode, 505 ACPI_NAMESPACE_NODE *ResourceNode, 506 UINT32 BitIndex) 507{ 508 ACPI_STATUS Status; 509 UINT32 ResourceBitIndex; 510 UINT8 ResourceTableIndex; 511 ACPI_SIZE RequiredSize; 512 char *Pathname; 513 AML_RESOURCE *Aml; 514 ACPI_PARSE_OBJECT *Op; 515 char *InternalPath; 516 char *Tag; 517 518 519 /* Get the Op that contains the actual buffer data */ 520 521 Op = BufferNode->Op->Common.Value.Arg; 522 Op = Op->Common.Next; 523 if (!Op) 524 { 525 return (NULL); 526 } 527 528 /* Get the individual resource descriptor and validate it */ 529 530 Aml = ACPI_CAST_PTR (AML_RESOURCE, 531 &Op->Named.Data[ResourceNode->Value]); 532 533 Status = AcpiUtValidateResource (Aml, &ResourceTableIndex); 534 if (ACPI_FAILURE (Status)) 535 { 536 return (NULL); 537 } 538 539 /* Get offset into this descriptor (from offset into entire buffer) */ 540 541 ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value); 542 543 /* Get the tag associated with this resource descriptor and offset */ 544 545 Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex); 546 if (!Tag) 547 { 548 return (NULL); 549 } 550 551 /* 552 * Now that we know that we have a reference that can be converted to a 553 * symbol, change the name of the resource to a unique name. 554 */ 555 AcpiDmUpdateResourceName (ResourceNode); 556 557 /* Get the full pathname to the parent buffer */ 558 559 RequiredSize = AcpiNsGetPathnameLength (BufferNode); 560 if (!RequiredSize) 561 { 562 return (NULL); 563 } 564 565 Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH); 566 if (!Pathname) 567 { 568 return (NULL); 569 } 570 571 Status = AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname); 572 if (ACPI_FAILURE (Status)) 573 { 574 return (NULL); 575 } 576 577 /* 578 * Create the full path to the resource and tag by: remove the buffer name, 579 * append the resource descriptor name, append a dot, append the tag name. 580 * 581 * TBD: Always using the full path is a bit brute force, the path can be 582 * often be optimized with carats (if the original buffer namepath is a 583 * single nameseg). This doesn't really matter, because these paths do not 584 * end up in the final compiled AML, it's just an appearance issue for the 585 * disassembled code. 586 */ 587 Pathname[ACPI_STRLEN (Pathname) - ACPI_NAME_SIZE] = 0; 588 ACPI_STRNCAT (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE); 589 ACPI_STRCAT (Pathname, "."); 590 ACPI_STRNCAT (Pathname, Tag, ACPI_NAME_SIZE); 591 592 /* Internalize the namepath to AML format */ 593 594 AcpiNsInternalizeName (Pathname, &InternalPath); 595 ACPI_FREE (Pathname); 596 return (InternalPath); 597} 598 599 600/******************************************************************************* 601 * 602 * FUNCTION: AcpiDmUpdateResourceName 603 * 604 * PARAMETERS: ResourceNode - Node for a resource descriptor 605 * 606 * RETURN: Stores new name in the ResourceNode 607 * 608 * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by 609 * both the disassembly of the descriptor itself and any symbolic 610 * references to the descriptor. Ignored if a unique name has 611 * already been assigned to the resource. 612 * 613 * NOTE: Single threaded, suitable for applications only! 614 * 615 ******************************************************************************/ 616 617static void 618AcpiDmUpdateResourceName ( 619 ACPI_NAMESPACE_NODE *ResourceNode) 620{ 621 char Name[ACPI_NAME_SIZE]; 622 623 624 /* Ignore if a unique name has already been assigned */ 625 626 if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME) 627 { 628 return; 629 } 630 631 /* Generate a new ACPI name for the descriptor */ 632 633 Name[0] = '_'; 634 Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix]; 635 Name[2] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 4); 636 Name[3] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 0); 637 638 /* Update globals for next name */ 639 640 AcpiGbl_NextResourceId++; 641 if (AcpiGbl_NextResourceId >= 256) 642 { 643 AcpiGbl_NextResourceId = 0; 644 AcpiGbl_NextPrefix++; 645 if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX) 646 { 647 AcpiGbl_NextPrefix = 0; 648 } 649 } 650 651 /* Change the resource descriptor name */ 652 653 ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]); 654} 655 656 657/******************************************************************************* 658 * 659 * FUNCTION: AcpiDmGetResourceTag 660 * 661 * PARAMETERS: BitIndex - Index into the resource descriptor 662 * Resource - Pointer to the raw resource data 663 * ResourceIndex - Index correspoinding to the resource type 664 * 665 * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match. 666 * 667 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag. 668 * 669 ******************************************************************************/ 670 671static char * 672AcpiDmGetResourceTag ( 673 UINT32 BitIndex, 674 AML_RESOURCE *Resource, 675 UINT8 ResourceIndex) 676{ 677 ACPI_RESOURCE_TAG *TagList; 678 char *Tag = NULL; 679 680 681 /* Get the tag list for this resource descriptor type */ 682 683 TagList = AcpiGbl_ResourceTags[ResourceIndex]; 684 if (!TagList) 685 { 686 /* There are no tags for this resource type */ 687 688 return (NULL); 689 } 690 691 /* 692 * Handle the type-specific flags field for the address descriptors. 693 * Kindof brute force, but just blindly search for an index match. 694 */ 695 switch (Resource->DescriptorType) 696 { 697 case ACPI_RESOURCE_NAME_ADDRESS16: 698 case ACPI_RESOURCE_NAME_ADDRESS32: 699 case ACPI_RESOURCE_NAME_ADDRESS64: 700 case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64: 701 702 if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE) 703 { 704 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags); 705 } 706 else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE) 707 { 708 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags); 709 } 710 711 /* If we found a match, all done. Else, drop to normal search below */ 712 713 if (Tag) 714 { 715 return (Tag); 716 } 717 break; 718 719 default: 720 break; 721 } 722 723 /* Search the tag list for this descriptor type */ 724 725 Tag = AcpiDmSearchTagList (BitIndex, TagList); 726 return (Tag); 727} 728 729 730/******************************************************************************* 731 * 732 * FUNCTION: AcpiDmSearchTagList 733 * 734 * PARAMETERS: BitIndex - Index into the resource descriptor 735 * TagList - List to search 736 * 737 * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found. 738 * 739 * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches 740 * a fixed offset to a symbolic resource tag name. 741 * 742 ******************************************************************************/ 743 744static char * 745AcpiDmSearchTagList ( 746 UINT32 BitIndex, 747 ACPI_RESOURCE_TAG *TagList) 748{ 749 750 /* 751 * Walk the null-terminated tag list to find a matching bit offset. 752 * We are looking for an exact match. 753 */ 754 for ( ; TagList->Tag; TagList++) 755 { 756 if (BitIndex == TagList->BitIndex) 757 { 758 return (TagList->Tag); 759 } 760 } 761 762 /* A matching offset was not found */ 763 764 return (NULL); 765} 766 767 768/******************************************************************************* 769 * 770 * FUNCTION: AcpiDmFindResources 771 * 772 * PARAMETERS: Root - Root of the parse tree 773 * 774 * RETURN: None 775 * 776 * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each 777 * resource descriptor in each template is given a node -- used 778 * for later conversion of resource references to symbolic refs. 779 * 780 ******************************************************************************/ 781 782void 783AcpiDmFindResources ( 784 ACPI_PARSE_OBJECT *Root) 785{ 786 ACPI_PARSE_OBJECT *Op = Root; 787 ACPI_PARSE_OBJECT *Parent; 788 789 790 /* Walk the entire parse tree */ 791 792 while (Op) 793 { 794 /* We are interested in Buffer() declarations */ 795 796 if (Op->Common.AmlOpcode == AML_BUFFER_OP) 797 { 798 /* And only declarations of the form Name (XXXX, Buffer()... ) */ 799 800 Parent = Op->Common.Parent; 801 if (Parent->Common.AmlOpcode == AML_NAME_OP) 802 { 803 /* 804 * If the buffer is a resource template, add the individual 805 * resource descriptors to the namespace, as children of the 806 * buffer node. 807 */ 808 if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (Op))) 809 { 810 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; 811 AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op); 812 } 813 } 814 } 815 816 Op = AcpiPsGetDepthNext (Root, Op); 817 } 818} 819 820 821/******************************************************************************* 822 * 823 * FUNCTION: AcpiDmAddResourcesToNamespace 824 * 825 * PARAMETERS: BufferNode - Node for the parent buffer 826 * Op - Parse op for the buffer 827 * 828 * RETURN: None 829 * 830 * DESCRIPTION: Add an entire resource template to the namespace. Each 831 * resource descriptor is added as a namespace node. 832 * 833 ******************************************************************************/ 834 835static void 836AcpiDmAddResourcesToNamespace ( 837 ACPI_NAMESPACE_NODE *BufferNode, 838 ACPI_PARSE_OBJECT *Op) 839{ 840 ACPI_PARSE_OBJECT *NextOp; 841 842 843 /* Get to the ByteData list */ 844 845 NextOp = Op->Common.Value.Arg; 846 NextOp = NextOp->Common.Next; 847 if (!NextOp) 848 { 849 return; 850 } 851 852 /* Set Node and Op to point to each other */ 853 854 BufferNode->Op = Op; 855 Op->Common.Node = BufferNode; 856 857 /* 858 * Insert each resource into the namespace 859 * NextOp contains the Aml pointer and the Aml length 860 */ 861 AcpiUtWalkAmlResources ((UINT8 *) NextOp->Named.Data, 862 (ACPI_SIZE) NextOp->Common.Value.Integer, 863 AcpiDmAddResourceToNamespace, BufferNode); 864} 865 866 867/******************************************************************************* 868 * 869 * FUNCTION: AcpiDmAddResourceToNamespace 870 * 871 * PARAMETERS: ACPI_WALK_AML_CALLBACK 872 * BufferNode - Node for the parent buffer 873 * 874 * RETURN: Status 875 * 876 * DESCRIPTION: Add one resource descriptor to the namespace as a child of the 877 * parent buffer. The same name is used for each descriptor. This 878 * is changed later to a unique name if the resource is actually 879 * referenced by an AML operator. 880 * 881 ******************************************************************************/ 882 883static ACPI_STATUS 884AcpiDmAddResourceToNamespace ( 885 UINT8 *Aml, 886 UINT32 Length, 887 UINT32 Offset, 888 UINT8 ResourceIndex, 889 void *Context) 890{ 891 ACPI_STATUS Status; 892 ACPI_GENERIC_STATE ScopeInfo; 893 ACPI_NAMESPACE_NODE *Node; 894 895 896 /* TBD: Don't need to add descriptors that have no tags defined? */ 897 898 /* Add the resource to the namespace, as child of the buffer */ 899 900 ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context); 901 Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE, 902 ACPI_IMODE_LOAD_PASS2, 903 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE, 904 NULL, &Node); 905 if (ACPI_FAILURE (Status)) 906 { 907 return (AE_OK); 908 } 909 910 /* Set the name to the default, changed later if resource is referenced */ 911 912 Node->Name.Integer = ACPI_DEFAULT_RESNAME; 913 914 /* Save the offset of the descriptor (within the original buffer) */ 915 916 Node->Value = Offset; 917 Node->Length = Length; 918 return (AE_OK); 919} 920 921