dmrestag.c revision 197104
1/****************************************************************************** 2 * 3 * Module Name: dmrestag - Add tags to resource descriptors (Application-level) 4 * 5 *****************************************************************************/ 6 7/****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2009, 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 *****************************************************************************/ 115 116 117#include <contrib/dev/acpica/include/acpi.h> 118#include <contrib/dev/acpica/include/accommon.h> 119#include <contrib/dev/acpica/include/acparser.h> 120#include <contrib/dev/acpica/include/acdisasm.h> 121#include <contrib/dev/acpica/include/acnamesp.h> 122#include <contrib/dev/acpica/include/amlcode.h> 123 124/* This module used for application-level code only */ 125 126#define _COMPONENT ACPI_CA_DISASSEMBLER 127 ACPI_MODULE_NAME ("dmrestag") 128 129/* Local prototypes */ 130 131static void 132AcpiDmUpdateResourceName ( 133 ACPI_NAMESPACE_NODE *ResourceNode); 134 135static char * 136AcpiDmSearchTagList ( 137 UINT32 BitIndex, 138 ACPI_RESOURCE_TAG *TagList); 139 140static char * 141AcpiDmGetResourceTag ( 142 UINT32 BitIndex, 143 AML_RESOURCE *Resource, 144 UINT8 ResourceIndex); 145 146static char * 147AcpiGetTagPathname ( 148 ACPI_NAMESPACE_NODE *BufferNode, 149 ACPI_NAMESPACE_NODE *ResourceNode, 150 UINT32 BitIndex); 151 152static ACPI_NAMESPACE_NODE * 153AcpiDmGetResourceNode ( 154 ACPI_NAMESPACE_NODE *BufferNode, 155 UINT32 BitIndex); 156 157static ACPI_STATUS 158AcpiDmAddResourceToNamespace ( 159 UINT8 *Aml, 160 UINT32 Length, 161 UINT32 Offset, 162 UINT8 ResourceIndex, 163 void *Context); 164 165static void 166AcpiDmAddResourcesToNamespace ( 167 ACPI_NAMESPACE_NODE *BufferNode, 168 ACPI_PARSE_OBJECT *Op); 169 170 171/****************************************************************************** 172 * 173 * Resource Tag tables 174 * 175 * These are the predefined tags that refer to elements of a resource 176 * descriptor. Each name and offset is defined in the ACPI specification. 177 * 178 * Each table entry contains the bit offset of the field and the associated 179 * name. 180 * 181 ******************************************************************************/ 182 183static ACPI_RESOURCE_TAG AcpiDmIrqTags[] = 184{ 185 {( 1 * 8), ACPI_RESTAG_INTERRUPT}, 186 {( 3 * 8) + 0, ACPI_RESTAG_INTERRUPTTYPE}, 187 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTLEVEL}, 188 {( 3 * 8) + 4, ACPI_RESTAG_INTERRUPTSHARE}, 189 {0, NULL} 190}; 191 192static ACPI_RESOURCE_TAG AcpiDmDmaTags[] = 193{ 194 {( 1 * 8), ACPI_RESTAG_DMA}, 195 {( 2 * 8) + 0, ACPI_RESTAG_XFERTYPE}, 196 {( 2 * 8) + 2, ACPI_RESTAG_BUSMASTER}, 197 {( 2 * 8) + 5, ACPI_RESTAG_DMATYPE}, 198 {0, NULL} 199}; 200 201static ACPI_RESOURCE_TAG AcpiDmIoTags[] = 202{ 203 {( 1 * 8) + 0, ACPI_RESTAG_DECODE}, 204 {( 2 * 8), ACPI_RESTAG_MINADDR}, 205 {( 4 * 8), ACPI_RESTAG_MAXADDR}, 206 {( 6 * 8), ACPI_RESTAG_ALIGNMENT}, 207 {( 7 * 8), ACPI_RESTAG_LENGTH}, 208 {0, NULL} 209}; 210 211static ACPI_RESOURCE_TAG AcpiDmFixedIoTags[] = 212{ 213 {( 1 * 8), ACPI_RESTAG_BASEADDRESS}, 214 {( 3 * 8), ACPI_RESTAG_LENGTH}, 215 {0, NULL} 216}; 217 218static ACPI_RESOURCE_TAG AcpiDmMemory24Tags[] = 219{ 220 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 221 {( 4 * 8), ACPI_RESTAG_MINADDR}, 222 {( 6 * 8), ACPI_RESTAG_MAXADDR}, 223 {( 8 * 8), ACPI_RESTAG_ALIGNMENT}, 224 {(10 * 8), ACPI_RESTAG_LENGTH}, 225 {0, NULL} 226}; 227 228static ACPI_RESOURCE_TAG AcpiDmRegisterTags[] = 229{ 230 {( 3 * 8), ACPI_RESTAG_ADDRESSSPACE}, 231 {( 4 * 8), ACPI_RESTAG_REGISTERBITWIDTH}, 232 {( 5 * 8), ACPI_RESTAG_REGISTERBITOFFSET}, 233 {( 6 * 8), ACPI_RESTAG_ACCESSSIZE}, 234 {( 7 * 8), ACPI_RESTAG_ADDRESS}, 235 {0, NULL} 236}; 237 238static ACPI_RESOURCE_TAG AcpiDmMemory32Tags[] = 239{ 240 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 241 {( 4 * 8), ACPI_RESTAG_MINADDR}, 242 {( 8 * 8), ACPI_RESTAG_MAXADDR}, 243 {(12 * 8), ACPI_RESTAG_ALIGNMENT}, 244 {(16 * 8), ACPI_RESTAG_LENGTH}, 245 {0, NULL} 246}; 247 248static ACPI_RESOURCE_TAG AcpiDmFixedMemory32Tags[] = 249{ 250 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 251 {( 4 * 8), ACPI_RESTAG_BASEADDRESS}, 252 {( 8 * 8), ACPI_RESTAG_LENGTH}, 253 {0, NULL} 254}; 255 256static ACPI_RESOURCE_TAG AcpiDmInterruptTags[] = 257{ 258 {( 3 * 8) + 1, ACPI_RESTAG_INTERRUPTTYPE}, 259 {( 3 * 8) + 2, ACPI_RESTAG_INTERRUPTLEVEL}, 260 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 261 {( 5 * 8), ACPI_RESTAG_INTERRUPT}, 262 {0, NULL} 263}; 264 265static ACPI_RESOURCE_TAG AcpiDmAddress16Tags[] = 266{ 267 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 268 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 269 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 270 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 271 {( 8 * 8), ACPI_RESTAG_MINADDR}, 272 {(10 * 8), ACPI_RESTAG_MAXADDR}, 273 {(12 * 8), ACPI_RESTAG_TRANSLATION}, 274 {(14 * 8), ACPI_RESTAG_LENGTH}, 275 {0, NULL} 276}; 277 278static ACPI_RESOURCE_TAG AcpiDmAddress32Tags[] = 279{ 280 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 281 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 282 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 283 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 284 {(10 * 8), ACPI_RESTAG_MINADDR}, 285 {(14 * 8), ACPI_RESTAG_MAXADDR}, 286 {(18 * 8), ACPI_RESTAG_TRANSLATION}, 287 {(22 * 8), ACPI_RESTAG_LENGTH}, 288 {0, NULL} 289}; 290 291static ACPI_RESOURCE_TAG AcpiDmAddress64Tags[] = 292{ 293 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 294 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 295 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 296 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 297 {(14 * 8), ACPI_RESTAG_MINADDR}, 298 {(22 * 8), ACPI_RESTAG_MAXADDR}, 299 {(30 * 8), ACPI_RESTAG_TRANSLATION}, 300 {(38 * 8), ACPI_RESTAG_LENGTH}, 301 {0, NULL} 302}; 303 304static ACPI_RESOURCE_TAG AcpiDmExtendedAddressTags[] = 305{ 306 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 307 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 308 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 309 {( 8 * 8), ACPI_RESTAG_GRANULARITY}, 310 {(16 * 8), ACPI_RESTAG_MINADDR}, 311 {(24 * 8), ACPI_RESTAG_MAXADDR}, 312 {(32 * 8), ACPI_RESTAG_TRANSLATION}, 313 {(40 * 8), ACPI_RESTAG_LENGTH}, 314 {(48 * 8), ACPI_RESTAG_TYPESPECIFICATTRIBUTES}, 315 {0, NULL} 316}; 317 318/* Special-case tables for the type-specific flags */ 319 320static ACPI_RESOURCE_TAG AcpiDmMemoryFlagTags[] = 321{ 322 {( 5 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 323 {( 5 * 8) + 1, ACPI_RESTAG_MEMTYPE}, 324 {( 5 * 8) + 3, ACPI_RESTAG_MEMATTRIBUTES}, 325 {( 5 * 8) + 5, ACPI_RESTAG_TYPE}, 326 {0, NULL} 327}; 328 329static ACPI_RESOURCE_TAG AcpiDmIoFlagTags[] = 330{ 331 {( 5 * 8) + 0, ACPI_RESTAG_RANGETYPE}, 332 {( 5 * 8) + 4, ACPI_RESTAG_TYPE}, 333 {( 5 * 8) + 5, ACPI_RESTAG_TRANSTYPE}, 334 {0, NULL} 335}; 336 337 338/* Dispatch table used to obtain the correct tag table for a descriptor */ 339 340static ACPI_RESOURCE_TAG *AcpiGbl_ResourceTags [] = 341{ 342 /* Small descriptors */ 343 344 NULL, /* 0x00, Reserved */ 345 NULL, /* 0x01, Reserved */ 346 NULL, /* 0x02, Reserved */ 347 NULL, /* 0x03, Reserved */ 348 AcpiDmIrqTags, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ 349 AcpiDmDmaTags, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ 350 NULL, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ 351 NULL, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ 352 AcpiDmIoTags, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ 353 AcpiDmFixedIoTags, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ 354 NULL, /* 0x0A, Reserved */ 355 NULL, /* 0x0B, Reserved */ 356 NULL, /* 0x0C, Reserved */ 357 NULL, /* 0x0D, Reserved */ 358 NULL, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ 359 NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ 360 361 /* Large descriptors */ 362 363 NULL, /* 0x00, Reserved */ 364 AcpiDmMemory24Tags, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ 365 AcpiDmRegisterTags, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ 366 NULL, /* 0x03, Reserved */ 367 NULL, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ 368 AcpiDmMemory32Tags, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ 369 AcpiDmFixedMemory32Tags, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ 370 AcpiDmAddress32Tags, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ 371 AcpiDmAddress16Tags, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ 372 AcpiDmInterruptTags, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ 373 AcpiDmAddress64Tags, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ 374 AcpiDmExtendedAddressTags /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ 375}; 376 377 378/* 379 * Globals used to generate unique resource descriptor names. We use names that 380 * start with underscore and a prefix letter that is not used by other ACPI 381 * reserved names. To this, we append hex 0x00 through 0xFF. These 5 prefixes 382 * allow for 5*256 = 1280 unique names, probably sufficient for any single ASL 383 * file. If this becomes too small, we can use alpha+numerals for a total 384 * of 5*36*36 = 6480. 385 */ 386#define ACPI_NUM_RES_PREFIX 5 387 388static UINT32 AcpiGbl_NextResourceId = 0; 389static UINT8 AcpiGbl_NextPrefix = 0; 390static char AcpiGbl_Prefix[ACPI_NUM_RES_PREFIX] = 391 {'Y','Z','J','K','X'}; 392 393 394/******************************************************************************* 395 * 396 * FUNCTION: AcpiDmCheckResourceReference 397 * 398 * PARAMETERS: Op - Parse Op for the AML opcode 399 * WalkState - Current walk state (with valid scope) 400 * 401 * RETURN: None 402 * 403 * DESCRIPTION: Convert a reference to a resource descriptor to a symbolic 404 * reference if possible 405 * 406 * NOTE: Bit index is used to transparently handle both resource bit 407 * fields and byte fields. 408 * 409 ******************************************************************************/ 410 411void 412AcpiDmCheckResourceReference ( 413 ACPI_PARSE_OBJECT *Op, 414 ACPI_WALK_STATE *WalkState) 415{ 416 ACPI_STATUS Status; 417 ACPI_PARSE_OBJECT *BufferNameOp; 418 ACPI_PARSE_OBJECT *IndexOp; 419 ACPI_NAMESPACE_NODE *BufferNode; 420 ACPI_NAMESPACE_NODE *ResourceNode; 421 const ACPI_OPCODE_INFO *OpInfo; 422 char *Pathname; 423 UINT32 BitIndex; 424 425 426 /* We are only interested in the CreateXxxxField opcodes */ 427 428 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 429 if (OpInfo->Type != AML_TYPE_CREATE_FIELD) 430 { 431 return; 432 } 433 434 /* Get the buffer term operand */ 435 436 BufferNameOp = AcpiPsGetDepthNext (NULL, Op); 437 438 /* Must be a named buffer, not an arg or local or method call */ 439 440 if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP) 441 { 442 return; 443 } 444 445 /* Get the Index term, must be an integer constant to convert */ 446 447 IndexOp = BufferNameOp->Common.Next; 448 OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode); 449 if (OpInfo->ObjectType != ACPI_TYPE_INTEGER) 450 { 451 return; 452 } 453 454 /* Get the bit offset of the descriptor within the buffer */ 455 456 if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) || 457 (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)) 458 { 459 /* Index operand is a bit offset */ 460 461 BitIndex = (UINT32) IndexOp->Common.Value.Integer; 462 } 463 else 464 { 465 /* Index operand is a byte offset, convert to bits */ 466 467 BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer); 468 } 469 470 /* Lookup the buffer in the namespace */ 471 472 Status = AcpiNsLookup (WalkState->ScopeInfo, 473 BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER, 474 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, 475 &BufferNode); 476 if (ACPI_FAILURE (Status)) 477 { 478 return; 479 } 480 481 /* Validate object type, we must have a buffer */ 482 483 if (BufferNode->Type != ACPI_TYPE_BUFFER) 484 { 485 return; 486 } 487 488 /* Find the resource descriptor node corresponding to the index */ 489 490 ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex); 491 if (!ResourceNode) 492 { 493 return; 494 } 495 496 /* Translate the Index to a resource tag pathname */ 497 498 Pathname = AcpiGetTagPathname (BufferNode, ResourceNode, BitIndex); 499 if (Pathname) 500 { 501 /* Complete the conversion of the Index to a symbol */ 502 503 IndexOp->Common.AmlOpcode = AML_INT_NAMEPATH_OP; 504 IndexOp->Common.Value.String = Pathname; 505 } 506} 507 508 509/******************************************************************************* 510 * 511 * FUNCTION: AcpiDmGetResourceNode 512 * 513 * PARAMETERS: BufferNode - Node for the parent buffer 514 * BitIndex - Index into the resource descriptor 515 * 516 * RETURN: Namespace node for the resource descriptor. NULL if not found 517 * 518 * DESCRIPTION: Find a resource descriptor that corresponds to the bit index 519 * 520 ******************************************************************************/ 521 522static ACPI_NAMESPACE_NODE * 523AcpiDmGetResourceNode ( 524 ACPI_NAMESPACE_NODE *BufferNode, 525 UINT32 BitIndex) 526{ 527 ACPI_NAMESPACE_NODE *Node; 528 UINT32 ByteIndex = ACPI_DIV_8 (BitIndex); 529 530 531 /* 532 * Child list contains an entry for each resource descriptor. Find 533 * the descriptor that corresponds to the Index. 534 * 535 * If there are no children, this is not a resource template 536 */ 537 Node = BufferNode->Child; 538 while (Node) 539 { 540 /* 541 * Check if the Index falls within this resource. 542 * 543 * Value contains the resource offset, Object contains the resource 544 * length (both in bytes) 545 */ 546 if ((ByteIndex >= Node->Value) && 547 (ByteIndex < (Node->Value + Node->Length))) 548 { 549 return (Node); 550 } 551 552 /* List is circular, this flag marks the end */ 553 554 if (Node->Flags & ANOBJ_END_OF_PEER_LIST) 555 { 556 return (NULL); 557 } 558 559 Node = Node->Peer; 560 } 561 562 return (NULL); 563} 564 565 566/******************************************************************************* 567 * 568 * FUNCTION: AcpiGetTagPathname 569 * 570 * PARAMETERS: BufferNode - Node for the parent buffer 571 * ResourceNode - Node for a resource descriptor 572 * BitIndex - Index into the resource descriptor 573 * 574 * RETURN: Full pathname for a resource tag. NULL if no match. 575 * Path is returned in AML (packed) format. 576 * 577 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname) 578 * 579 ******************************************************************************/ 580 581static char * 582AcpiGetTagPathname ( 583 ACPI_NAMESPACE_NODE *BufferNode, 584 ACPI_NAMESPACE_NODE *ResourceNode, 585 UINT32 BitIndex) 586{ 587 ACPI_STATUS Status; 588 UINT32 ResourceBitIndex; 589 UINT8 ResourceTableIndex; 590 ACPI_SIZE RequiredSize; 591 char *Pathname; 592 AML_RESOURCE *Aml; 593 ACPI_PARSE_OBJECT *Op; 594 char *InternalPath; 595 char *Tag; 596 597 598 /* Get the Op that contains the actual buffer data */ 599 600 Op = BufferNode->Op->Common.Value.Arg; 601 Op = Op->Common.Next; 602 if (!Op) 603 { 604 return (NULL); 605 } 606 607 /* Get the individual resource descriptor and validate it */ 608 609 Aml = ACPI_CAST_PTR (AML_RESOURCE, 610 &Op->Named.Data[ResourceNode->Value]); 611 612 Status = AcpiUtValidateResource (Aml, &ResourceTableIndex); 613 if (ACPI_FAILURE (Status)) 614 { 615 return (NULL); 616 } 617 618 /* Get offset into this descriptor (from offset into entire buffer) */ 619 620 ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value); 621 622 /* Get the tag associated with this resource descriptor and offset */ 623 624 Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex); 625 if (!Tag) 626 { 627 return (NULL); 628 } 629 630 /* 631 * Now that we know that we have a reference that can be converted to a 632 * symbol, change the name of the resource to a unique name. 633 */ 634 AcpiDmUpdateResourceName (ResourceNode); 635 636 /* Get the full pathname to the parent buffer */ 637 638 RequiredSize = AcpiNsGetPathnameLength (BufferNode); 639 if (!RequiredSize) 640 { 641 return (NULL); 642 } 643 644 Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH); 645 if (!Pathname) 646 { 647 return (NULL); 648 } 649 650 Status = AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname); 651 if (ACPI_FAILURE (Status)) 652 { 653 return (NULL); 654 } 655 656 /* 657 * Create the full path to the resource and tag by: remove the buffer name, 658 * append the resource descriptor name, append a dot, append the tag name. 659 * 660 * TBD: Always using the full path is a bit brute force, the path can be 661 * often be optimized with carats (if the original buffer namepath is a 662 * single nameseg). This doesn't really matter, because these paths do not 663 * end up in the final compiled AML, it's just an appearance issue for the 664 * disassembled code. 665 */ 666 Pathname[ACPI_STRLEN (Pathname) - ACPI_NAME_SIZE] = 0; 667 ACPI_STRNCAT (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE); 668 ACPI_STRCAT (Pathname, "."); 669 ACPI_STRNCAT (Pathname, Tag, ACPI_NAME_SIZE); 670 671 /* Internalize the namepath to AML format */ 672 673 AcpiNsInternalizeName (Pathname, &InternalPath); 674 ACPI_FREE (Pathname); 675 return (InternalPath); 676} 677 678 679/******************************************************************************* 680 * 681 * FUNCTION: AcpiDmUpdateResourceName 682 * 683 * PARAMETERS: ResourceNode - Node for a resource descriptor 684 * 685 * RETURN: Stores new name in the ResourceNode 686 * 687 * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by 688 * both the disassembly of the descriptor itself and any symbolic 689 * references to the descriptor. Ignored if a unique name has 690 * already been assigned to the resource. 691 * 692 * NOTE: Single threaded, suitable for applications only! 693 * 694 ******************************************************************************/ 695 696static void 697AcpiDmUpdateResourceName ( 698 ACPI_NAMESPACE_NODE *ResourceNode) 699{ 700 char Name[ACPI_NAME_SIZE]; 701 702 703 /* Ignore if a unique name has already been assigned */ 704 705 if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME) 706 { 707 return; 708 } 709 710 /* Generate a new ACPI name for the descriptor */ 711 712 Name[0] = '_'; 713 Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix]; 714 Name[2] = AcpiUtHexToAsciiChar (AcpiGbl_NextResourceId, 4); 715 Name[3] = AcpiUtHexToAsciiChar (AcpiGbl_NextResourceId, 0); 716 717 /* Update globals for next name */ 718 719 AcpiGbl_NextResourceId++; 720 if (AcpiGbl_NextResourceId >= 256) 721 { 722 AcpiGbl_NextResourceId = 0; 723 AcpiGbl_NextPrefix++; 724 if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX) 725 { 726 AcpiGbl_NextPrefix = 0; 727 } 728 } 729 730 /* Change the resource descriptor name */ 731 732 ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]); 733} 734 735 736/******************************************************************************* 737 * 738 * FUNCTION: AcpiDmGetResourceTag 739 * 740 * PARAMETERS: BitIndex - Index into the resource descriptor 741 * Resource - Pointer to the raw resource data 742 * ResourceIndex - Index correspoinding to the resource type 743 * 744 * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match. 745 * 746 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag. 747 * 748 ******************************************************************************/ 749 750static char * 751AcpiDmGetResourceTag ( 752 UINT32 BitIndex, 753 AML_RESOURCE *Resource, 754 UINT8 ResourceIndex) 755{ 756 ACPI_RESOURCE_TAG *TagList; 757 char *Tag = NULL; 758 759 760 /* Get the tag list for this resource descriptor type */ 761 762 TagList = AcpiGbl_ResourceTags[ResourceIndex]; 763 if (!TagList) 764 { 765 /* There are no tags for this resource type */ 766 767 return (NULL); 768 } 769 770 /* 771 * Handle the type-specific flags field for the address descriptors. 772 * Kindof brute force, but just blindly search for an index match. 773 */ 774 switch (Resource->DescriptorType) 775 { 776 case ACPI_RESOURCE_NAME_ADDRESS16: 777 case ACPI_RESOURCE_NAME_ADDRESS32: 778 case ACPI_RESOURCE_NAME_ADDRESS64: 779 case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64: 780 781 if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE) 782 { 783 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags); 784 } 785 else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE) 786 { 787 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags); 788 } 789 790 /* If we found a match, all done. Else, drop to normal search below */ 791 792 if (Tag) 793 { 794 return (Tag); 795 } 796 break; 797 798 default: 799 break; 800 } 801 802 /* Search the tag list for this descriptor type */ 803 804 Tag = AcpiDmSearchTagList (BitIndex, TagList); 805 return (Tag); 806} 807 808 809/******************************************************************************* 810 * 811 * FUNCTION: AcpiDmSearchTagList 812 * 813 * PARAMETERS: BitIndex - Index into the resource descriptor 814 * TagList - List to search 815 * 816 * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found. 817 * 818 * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches 819 * a fixed offset to a symbolic resource tag name. 820 * 821 ******************************************************************************/ 822 823static char * 824AcpiDmSearchTagList ( 825 UINT32 BitIndex, 826 ACPI_RESOURCE_TAG *TagList) 827{ 828 829 /* 830 * Walk the null-terminated tag list to find a matching bit offset. 831 * We are looking for an exact match. 832 */ 833 for ( ; TagList->Tag; TagList++) 834 { 835 if (BitIndex == TagList->BitIndex) 836 { 837 return (TagList->Tag); 838 } 839 } 840 841 /* A matching offset was not found */ 842 843 return (NULL); 844} 845 846 847/******************************************************************************* 848 * 849 * FUNCTION: AcpiDmFindResources 850 * 851 * PARAMETERS: Root - Root of the parse tree 852 * 853 * RETURN: None 854 * 855 * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each 856 * resource descriptor in each template is given a node -- used 857 * for later conversion of resource references to symbolic refs. 858 * 859 ******************************************************************************/ 860 861void 862AcpiDmFindResources ( 863 ACPI_PARSE_OBJECT *Root) 864{ 865 ACPI_PARSE_OBJECT *Op = Root; 866 ACPI_PARSE_OBJECT *Parent; 867 868 869 /* Walk the entire parse tree */ 870 871 while (Op) 872 { 873 /* We are interested in Buffer() declarations */ 874 875 if (Op->Common.AmlOpcode == AML_BUFFER_OP) 876 { 877 /* And only declarations of the form Name (XXXX, Buffer()... ) */ 878 879 Parent = Op->Common.Parent; 880 if (Parent->Common.AmlOpcode == AML_NAME_OP) 881 { 882 /* 883 * If the buffer is a resource template, add the individual 884 * resource descriptors to the namespace, as children of the 885 * buffer node. 886 */ 887 if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (Op))) 888 { 889 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; 890 AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op); 891 } 892 } 893 } 894 895 Op = AcpiPsGetDepthNext (Root, Op); 896 } 897} 898 899 900/******************************************************************************* 901 * 902 * FUNCTION: AcpiDmAddResourcesToNamespace 903 * 904 * PARAMETERS: BufferNode - Node for the parent buffer 905 * Op - Parse op for the buffer 906 * 907 * RETURN: None 908 * 909 * DESCRIPTION: Add an entire resource template to the namespace. Each 910 * resource descriptor is added as a namespace node. 911 * 912 ******************************************************************************/ 913 914static void 915AcpiDmAddResourcesToNamespace ( 916 ACPI_NAMESPACE_NODE *BufferNode, 917 ACPI_PARSE_OBJECT *Op) 918{ 919 ACPI_PARSE_OBJECT *NextOp; 920 921 922 /* Get to the ByteData list */ 923 924 NextOp = Op->Common.Value.Arg; 925 NextOp = NextOp->Common.Next; 926 if (!NextOp) 927 { 928 return; 929 } 930 931 /* Set Node and Op to point to each other */ 932 933 BufferNode->Op = Op; 934 Op->Common.Node = BufferNode; 935 936 /* 937 * Insert each resource into the namespace 938 * NextOp contains the Aml pointer and the Aml length 939 */ 940 AcpiUtWalkAmlResources ((UINT8 *) NextOp->Named.Data, 941 (ACPI_SIZE) NextOp->Common.Value.Integer, 942 AcpiDmAddResourceToNamespace, BufferNode); 943} 944 945 946/******************************************************************************* 947 * 948 * FUNCTION: AcpiDmAddResourceToNamespace 949 * 950 * PARAMETERS: ACPI_WALK_AML_CALLBACK 951 * BufferNode - Node for the parent buffer 952 * 953 * RETURN: Status 954 * 955 * DESCRIPTION: Add one resource descriptor to the namespace as a child of the 956 * parent buffer. The same name is used for each descriptor. This 957 * is changed later to a unique name if the resource is actually 958 * referenced by an AML operator. 959 * 960 ******************************************************************************/ 961 962static ACPI_STATUS 963AcpiDmAddResourceToNamespace ( 964 UINT8 *Aml, 965 UINT32 Length, 966 UINT32 Offset, 967 UINT8 ResourceIndex, 968 void *Context) 969{ 970 ACPI_STATUS Status; 971 ACPI_GENERIC_STATE ScopeInfo; 972 ACPI_NAMESPACE_NODE *Node; 973 974 975 /* TBD: Don't need to add descriptors that have no tags defined? */ 976 977 /* Add the resource to the namespace, as child of the buffer */ 978 979 ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context); 980 Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE, 981 ACPI_IMODE_LOAD_PASS2, 982 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE, 983 NULL, &Node); 984 if (ACPI_FAILURE (Status)) 985 { 986 return (AE_OK); 987 } 988 989 /* Set the name to the default, changed later if resource is referenced */ 990 991 Node->Name.Integer = ACPI_DEFAULT_RESNAME; 992 993 /* Save the offset of the descriptor (within the original buffer) */ 994 995 Node->Value = Offset; 996 Node->Length = Length; 997 return (AE_OK); 998} 999 1000