dmrestag.c revision 228110
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 const 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 const 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 const 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 const 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 const ACPI_RESOURCE_TAG AcpiDmFixedIoTags[] = 140{ 141 {( 1 * 8), ACPI_RESTAG_BASEADDRESS}, 142 {( 3 * 8), ACPI_RESTAG_LENGTH}, 143 {0, NULL} 144}; 145 146static const ACPI_RESOURCE_TAG AcpiDmFixedDmaTags[] = 147{ 148 {( 1 * 8), ACPI_RESTAG_DMA}, 149 {( 3 * 8), ACPI_RESTAG_DMATYPE}, 150 {( 5 * 8), ACPI_RESTAG_XFERTYPE}, 151 {0, NULL} 152}; 153 154static const ACPI_RESOURCE_TAG AcpiDmMemory24Tags[] = 155{ 156 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 157 {( 4 * 8), ACPI_RESTAG_MINADDR}, 158 {( 6 * 8), ACPI_RESTAG_MAXADDR}, 159 {( 8 * 8), ACPI_RESTAG_ALIGNMENT}, 160 {(10 * 8), ACPI_RESTAG_LENGTH}, 161 {0, NULL} 162}; 163 164static const ACPI_RESOURCE_TAG AcpiDmRegisterTags[] = 165{ 166 {( 3 * 8), ACPI_RESTAG_ADDRESSSPACE}, 167 {( 4 * 8), ACPI_RESTAG_REGISTERBITWIDTH}, 168 {( 5 * 8), ACPI_RESTAG_REGISTERBITOFFSET}, 169 {( 6 * 8), ACPI_RESTAG_ACCESSSIZE}, 170 {( 7 * 8), ACPI_RESTAG_ADDRESS}, 171 {0, NULL} 172}; 173 174static const ACPI_RESOURCE_TAG AcpiDmMemory32Tags[] = 175{ 176 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 177 {( 4 * 8), ACPI_RESTAG_MINADDR}, 178 {( 8 * 8), ACPI_RESTAG_MAXADDR}, 179 {(12 * 8), ACPI_RESTAG_ALIGNMENT}, 180 {(16 * 8), ACPI_RESTAG_LENGTH}, 181 {0, NULL} 182}; 183 184static const ACPI_RESOURCE_TAG AcpiDmFixedMemory32Tags[] = 185{ 186 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 187 {( 4 * 8), ACPI_RESTAG_BASEADDRESS}, 188 {( 8 * 8), ACPI_RESTAG_LENGTH}, 189 {0, NULL} 190}; 191 192static const ACPI_RESOURCE_TAG AcpiDmInterruptTags[] = 193{ 194 {( 3 * 8) + 1, ACPI_RESTAG_INTERRUPTTYPE}, 195 {( 3 * 8) + 2, ACPI_RESTAG_INTERRUPTLEVEL}, 196 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 197 {( 5 * 8), ACPI_RESTAG_INTERRUPT}, 198 {0, NULL} 199}; 200 201static const ACPI_RESOURCE_TAG AcpiDmAddress16Tags[] = 202{ 203 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 204 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 205 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 206 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 207 {( 8 * 8), ACPI_RESTAG_MINADDR}, 208 {(10 * 8), ACPI_RESTAG_MAXADDR}, 209 {(12 * 8), ACPI_RESTAG_TRANSLATION}, 210 {(14 * 8), ACPI_RESTAG_LENGTH}, 211 {0, NULL} 212}; 213 214static const ACPI_RESOURCE_TAG AcpiDmAddress32Tags[] = 215{ 216 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 217 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 218 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 219 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 220 {(10 * 8), ACPI_RESTAG_MINADDR}, 221 {(14 * 8), ACPI_RESTAG_MAXADDR}, 222 {(18 * 8), ACPI_RESTAG_TRANSLATION}, 223 {(22 * 8), ACPI_RESTAG_LENGTH}, 224 {0, NULL} 225}; 226 227static const ACPI_RESOURCE_TAG AcpiDmAddress64Tags[] = 228{ 229 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 230 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 231 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 232 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 233 {(14 * 8), ACPI_RESTAG_MINADDR}, 234 {(22 * 8), ACPI_RESTAG_MAXADDR}, 235 {(30 * 8), ACPI_RESTAG_TRANSLATION}, 236 {(38 * 8), ACPI_RESTAG_LENGTH}, 237 {0, NULL} 238}; 239 240static const ACPI_RESOURCE_TAG AcpiDmExtendedAddressTags[] = 241{ 242 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 243 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 244 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 245 {( 8 * 8), ACPI_RESTAG_GRANULARITY}, 246 {(16 * 8), ACPI_RESTAG_MINADDR}, 247 {(24 * 8), ACPI_RESTAG_MAXADDR}, 248 {(32 * 8), ACPI_RESTAG_TRANSLATION}, 249 {(40 * 8), ACPI_RESTAG_LENGTH}, 250 {(48 * 8), ACPI_RESTAG_TYPESPECIFICATTRIBUTES}, 251 {0, NULL} 252}; 253 254/* Subtype tables for GPIO descriptors */ 255 256static const ACPI_RESOURCE_TAG AcpiDmGpioIntTags[] = 257{ 258 {( 7 * 8) + 0, ACPI_RESTAG_MODE}, 259 {( 7 * 8) + 1, ACPI_RESTAG_POLARITY}, 260 {( 7 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 261 {( 9 * 8), ACPI_RESTAG_PINCONFIG}, 262 {(10 * 8), ACPI_RESTAG_DRIVESTRENGTH}, 263 {(12 * 8), ACPI_RESTAG_DEBOUNCETIME}, 264 {0, NULL} 265}; 266 267static const ACPI_RESOURCE_TAG AcpiDmGpioIoTags[] = 268{ 269 {( 7 * 8) + 0, ACPI_RESTAG_IORESTRICTION}, 270 {( 7 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 271 {( 9 * 8), ACPI_RESTAG_PINCONFIG}, 272 {(10 * 8), ACPI_RESTAG_DRIVESTRENGTH}, 273 {(12 * 8), ACPI_RESTAG_DEBOUNCETIME}, 274 {0, NULL} 275}; 276 277/* Subtype tables for SerialBus descriptors */ 278 279static const ACPI_RESOURCE_TAG AcpiDmI2cSerialBusTags[] = 280{ 281 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, 282 {( 7 * 8) + 0, ACPI_RESTAG_MODE}, 283 {(12 * 8), ACPI_RESTAG_SPEED}, 284 {(16 * 8), ACPI_RESTAG_ADDRESS}, 285 {0, NULL} 286}; 287 288static const ACPI_RESOURCE_TAG AcpiDmSpiSerialBusTags[] = 289{ 290 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, 291 {( 7 * 8) + 0, ACPI_RESTAG_MODE}, 292 {( 7 * 8) + 1, ACPI_RESTAG_DEVICEPOLARITY}, 293 {(12 * 8), ACPI_RESTAG_SPEED}, 294 {(16 * 8), ACPI_RESTAG_LENGTH}, 295 {(17 * 8), ACPI_RESTAG_PHASE}, 296 {(18 * 8), ACPI_RESTAG_POLARITY}, 297 {(19 * 8), ACPI_RESTAG_ADDRESS}, 298 {0, NULL} 299}; 300 301static const ACPI_RESOURCE_TAG AcpiDmUartSerialBusTags[] = 302{ 303 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, /* Note: not part of original macro */ 304 {( 7 * 8) + 0, ACPI_RESTAG_FLOWCONTROL}, 305 {( 7 * 8) + 2, ACPI_RESTAG_STOPBITS}, 306 {( 7 * 8) + 4, ACPI_RESTAG_LENGTH}, 307 {( 7 * 8) + 7, ACPI_RESTAG_ENDIANNESS}, 308 {(12 * 8), ACPI_RESTAG_SPEED}, 309 {(16 * 8), ACPI_RESTAG_LENGTH_RX}, 310 {(18 * 8), ACPI_RESTAG_LENGTH_TX}, 311 {(20 * 8), ACPI_RESTAG_PARITY}, 312 {(21 * 8), ACPI_RESTAG_LINE}, 313 {0, NULL} 314}; 315 316/* Subtype tables for Address descriptor type-specific flags */ 317 318static const ACPI_RESOURCE_TAG AcpiDmMemoryFlagTags[] = 319{ 320 {( 5 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 321 {( 5 * 8) + 1, ACPI_RESTAG_MEMTYPE}, 322 {( 5 * 8) + 3, ACPI_RESTAG_MEMATTRIBUTES}, 323 {( 5 * 8) + 5, ACPI_RESTAG_TYPE}, 324 {0, NULL} 325}; 326 327static const ACPI_RESOURCE_TAG AcpiDmIoFlagTags[] = 328{ 329 {( 5 * 8) + 0, ACPI_RESTAG_RANGETYPE}, 330 {( 5 * 8) + 4, ACPI_RESTAG_TYPE}, 331 {( 5 * 8) + 5, ACPI_RESTAG_TRANSTYPE}, 332 {0, NULL} 333}; 334 335 336/* 337 * Dispatch table used to obtain the correct tag table for a descriptor. 338 * 339 * A NULL in this table means one of three things: 340 * 1) The descriptor ID is reserved and invalid 341 * 2) The descriptor has no tags associated with it 342 * 3) The descriptor has subtypes and a separate table will be used. 343 */ 344static const ACPI_RESOURCE_TAG *AcpiGbl_ResourceTags[] = 345{ 346 /* Small descriptors */ 347 348 NULL, /* 0x00, Reserved */ 349 NULL, /* 0x01, Reserved */ 350 NULL, /* 0x02, Reserved */ 351 NULL, /* 0x03, Reserved */ 352 AcpiDmIrqTags, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ 353 AcpiDmDmaTags, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ 354 NULL, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ 355 NULL, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ 356 AcpiDmIoTags, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ 357 AcpiDmFixedIoTags, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ 358 AcpiDmFixedDmaTags, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */ 359 NULL, /* 0x0B, Reserved */ 360 NULL, /* 0x0C, Reserved */ 361 NULL, /* 0x0D, Reserved */ 362 NULL, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ 363 NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ 364 365 /* Large descriptors */ 366 367 NULL, /* 0x00, Reserved */ 368 AcpiDmMemory24Tags, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ 369 AcpiDmRegisterTags, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ 370 NULL, /* 0x03, Reserved */ 371 NULL, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ 372 AcpiDmMemory32Tags, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ 373 AcpiDmFixedMemory32Tags, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ 374 AcpiDmAddress32Tags, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ 375 AcpiDmAddress16Tags, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ 376 AcpiDmInterruptTags, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ 377 AcpiDmAddress64Tags, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ 378 AcpiDmExtendedAddressTags, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ 379 NULL, /* 0x0C, ACPI_RESOURCE_NAME_GPIO - Use Subtype table below */ 380 NULL, /* 0x0D, Reserved */ 381 NULL /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use Subtype table below */ 382}; 383 384/* GPIO Subtypes */ 385 386static const ACPI_RESOURCE_TAG *AcpiGbl_GpioResourceTags[] = 387{ 388 AcpiDmGpioIntTags, /* 0x00 Interrupt Connection */ 389 AcpiDmGpioIoTags /* 0x01 I/O Connection */ 390}; 391 392/* Serial Bus Subtypes */ 393 394static const ACPI_RESOURCE_TAG *AcpiGbl_SerialResourceTags[] = 395{ 396 NULL, /* 0x00 Reserved */ 397 AcpiDmI2cSerialBusTags, /* 0x01 I2C SerialBus */ 398 AcpiDmSpiSerialBusTags, /* 0x02 SPI SerialBus */ 399 AcpiDmUartSerialBusTags /* 0x03 UART SerialBus */ 400}; 401 402/* 403 * Globals used to generate unique resource descriptor names. We use names that 404 * start with underscore and a prefix letter that is not used by other ACPI 405 * reserved names. To this, we append hex 0x00 through 0xFF. These 5 prefixes 406 * allow for 5*256 = 1280 unique names, probably sufficient for any single ASL 407 * file. If this becomes too small, we can use alpha+numerals for a total 408 * of 5*36*36 = 6480. 409 */ 410#define ACPI_NUM_RES_PREFIX 5 411 412static UINT32 AcpiGbl_NextResourceId = 0; 413static UINT8 AcpiGbl_NextPrefix = 0; 414static char AcpiGbl_Prefix[ACPI_NUM_RES_PREFIX] = 415 {'Y','Z','J','K','X'}; 416 417 418/******************************************************************************* 419 * 420 * FUNCTION: AcpiDmCheckResourceReference 421 * 422 * PARAMETERS: Op - Parse Op for the AML opcode 423 * WalkState - Current walk state (with valid scope) 424 * 425 * RETURN: None 426 * 427 * DESCRIPTION: Convert a reference to a resource descriptor to a symbolic 428 * reference if possible 429 * 430 * NOTE: Bit index is used to transparently handle both resource bit 431 * fields and byte fields. 432 * 433 ******************************************************************************/ 434 435void 436AcpiDmCheckResourceReference ( 437 ACPI_PARSE_OBJECT *Op, 438 ACPI_WALK_STATE *WalkState) 439{ 440 ACPI_STATUS Status; 441 ACPI_PARSE_OBJECT *BufferNameOp; 442 ACPI_PARSE_OBJECT *IndexOp; 443 ACPI_NAMESPACE_NODE *BufferNode; 444 ACPI_NAMESPACE_NODE *ResourceNode; 445 const ACPI_OPCODE_INFO *OpInfo; 446 char *Pathname; 447 UINT32 BitIndex; 448 449 450 /* We are only interested in the CreateXxxxField opcodes */ 451 452 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 453 if (OpInfo->Type != AML_TYPE_CREATE_FIELD) 454 { 455 return; 456 } 457 458 /* Get the buffer term operand */ 459 460 BufferNameOp = AcpiPsGetDepthNext (NULL, Op); 461 462 /* Must be a named buffer, not an arg or local or method call */ 463 464 if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP) 465 { 466 return; 467 } 468 469 /* Get the Index term, must be an integer constant to convert */ 470 471 IndexOp = BufferNameOp->Common.Next; 472 OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode); 473 if (OpInfo->ObjectType != ACPI_TYPE_INTEGER) 474 { 475 return; 476 } 477 478 /* Get the bit offset of the descriptor within the buffer */ 479 480 if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) || 481 (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)) 482 { 483 /* Index operand is a bit offset */ 484 485 BitIndex = (UINT32) IndexOp->Common.Value.Integer; 486 } 487 else 488 { 489 /* Index operand is a byte offset, convert to bits */ 490 491 BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer); 492 } 493 494 /* Lookup the buffer in the namespace */ 495 496 Status = AcpiNsLookup (WalkState->ScopeInfo, 497 BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER, 498 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, 499 &BufferNode); 500 if (ACPI_FAILURE (Status)) 501 { 502 return; 503 } 504 505 /* Validate object type, we must have a buffer */ 506 507 if (BufferNode->Type != ACPI_TYPE_BUFFER) 508 { 509 return; 510 } 511 512 /* Find the resource descriptor node corresponding to the index */ 513 514 ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex); 515 if (!ResourceNode) 516 { 517 return; 518 } 519 520 /* Translate the Index to a resource tag pathname */ 521 522 Pathname = AcpiGetTagPathname (BufferNode, ResourceNode, BitIndex); 523 if (Pathname) 524 { 525 /* Complete the conversion of the Index to a symbol */ 526 527 IndexOp->Common.AmlOpcode = AML_INT_NAMEPATH_OP; 528 IndexOp->Common.Value.String = Pathname; 529 } 530} 531 532 533/******************************************************************************* 534 * 535 * FUNCTION: AcpiDmGetResourceNode 536 * 537 * PARAMETERS: BufferNode - Node for the parent buffer 538 * BitIndex - Index into the resource descriptor 539 * 540 * RETURN: Namespace node for the resource descriptor. NULL if not found 541 * 542 * DESCRIPTION: Find a resource descriptor that corresponds to the bit index 543 * 544 ******************************************************************************/ 545 546static ACPI_NAMESPACE_NODE * 547AcpiDmGetResourceNode ( 548 ACPI_NAMESPACE_NODE *BufferNode, 549 UINT32 BitIndex) 550{ 551 ACPI_NAMESPACE_NODE *Node; 552 UINT32 ByteIndex = ACPI_DIV_8 (BitIndex); 553 554 555 /* 556 * Child list contains an entry for each resource descriptor. Find 557 * the descriptor that corresponds to the Index. 558 * 559 * If there are no children, this is not a resource template 560 */ 561 Node = BufferNode->Child; 562 while (Node) 563 { 564 /* 565 * Check if the Index falls within this resource. 566 * 567 * Value contains the resource offset, Object contains the resource 568 * length (both in bytes) 569 */ 570 if ((ByteIndex >= Node->Value) && 571 (ByteIndex < (Node->Value + Node->Length))) 572 { 573 return (Node); 574 } 575 576 Node = Node->Peer; 577 } 578 579 return (NULL); 580} 581 582 583/******************************************************************************* 584 * 585 * FUNCTION: AcpiGetTagPathname 586 * 587 * PARAMETERS: BufferNode - Node for the parent buffer 588 * ResourceNode - Node for a resource descriptor 589 * BitIndex - Index into the resource descriptor 590 * 591 * RETURN: Full pathname for a resource tag. NULL if no match. 592 * Path is returned in AML (packed) format. 593 * 594 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname) 595 * 596 ******************************************************************************/ 597 598static char * 599AcpiGetTagPathname ( 600 ACPI_NAMESPACE_NODE *BufferNode, 601 ACPI_NAMESPACE_NODE *ResourceNode, 602 UINT32 BitIndex) 603{ 604 ACPI_STATUS Status; 605 UINT32 ResourceBitIndex; 606 UINT8 ResourceTableIndex; 607 ACPI_SIZE RequiredSize; 608 char *Pathname; 609 AML_RESOURCE *Aml; 610 ACPI_PARSE_OBJECT *Op; 611 char *InternalPath; 612 char *Tag; 613 614 615 /* Get the Op that contains the actual buffer data */ 616 617 Op = BufferNode->Op->Common.Value.Arg; 618 Op = Op->Common.Next; 619 if (!Op) 620 { 621 return (NULL); 622 } 623 624 /* Get the individual resource descriptor and validate it */ 625 626 Aml = ACPI_CAST_PTR (AML_RESOURCE, 627 &Op->Named.Data[ResourceNode->Value]); 628 629 Status = AcpiUtValidateResource (Aml, &ResourceTableIndex); 630 if (ACPI_FAILURE (Status)) 631 { 632 return (NULL); 633 } 634 635 /* Get offset into this descriptor (from offset into entire buffer) */ 636 637 ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value); 638 639 /* Get the tag associated with this resource descriptor and offset */ 640 641 Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex); 642 if (!Tag) 643 { 644 return (NULL); 645 } 646 647 /* 648 * Now that we know that we have a reference that can be converted to a 649 * symbol, change the name of the resource to a unique name. 650 */ 651 AcpiDmUpdateResourceName (ResourceNode); 652 653 /* Get the full pathname to the parent buffer */ 654 655 RequiredSize = AcpiNsGetPathnameLength (BufferNode); 656 if (!RequiredSize) 657 { 658 return (NULL); 659 } 660 661 Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH); 662 if (!Pathname) 663 { 664 return (NULL); 665 } 666 667 Status = AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname); 668 if (ACPI_FAILURE (Status)) 669 { 670 return (NULL); 671 } 672 673 /* 674 * Create the full path to the resource and tag by: remove the buffer name, 675 * append the resource descriptor name, append a dot, append the tag name. 676 * 677 * TBD: Always using the full path is a bit brute force, the path can be 678 * often be optimized with carats (if the original buffer namepath is a 679 * single nameseg). This doesn't really matter, because these paths do not 680 * end up in the final compiled AML, it's just an appearance issue for the 681 * disassembled code. 682 */ 683 Pathname[ACPI_STRLEN (Pathname) - ACPI_NAME_SIZE] = 0; 684 ACPI_STRNCAT (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE); 685 ACPI_STRCAT (Pathname, "."); 686 ACPI_STRNCAT (Pathname, Tag, ACPI_NAME_SIZE); 687 688 /* Internalize the namepath to AML format */ 689 690 AcpiNsInternalizeName (Pathname, &InternalPath); 691 ACPI_FREE (Pathname); 692 return (InternalPath); 693} 694 695 696/******************************************************************************* 697 * 698 * FUNCTION: AcpiDmUpdateResourceName 699 * 700 * PARAMETERS: ResourceNode - Node for a resource descriptor 701 * 702 * RETURN: Stores new name in the ResourceNode 703 * 704 * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by 705 * both the disassembly of the descriptor itself and any symbolic 706 * references to the descriptor. Ignored if a unique name has 707 * already been assigned to the resource. 708 * 709 * NOTE: Single threaded, suitable for applications only! 710 * 711 ******************************************************************************/ 712 713static void 714AcpiDmUpdateResourceName ( 715 ACPI_NAMESPACE_NODE *ResourceNode) 716{ 717 char Name[ACPI_NAME_SIZE]; 718 719 720 /* Ignore if a unique name has already been assigned */ 721 722 if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME) 723 { 724 return; 725 } 726 727 /* Generate a new ACPI name for the descriptor */ 728 729 Name[0] = '_'; 730 Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix]; 731 Name[2] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 4); 732 Name[3] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 0); 733 734 /* Update globals for next name */ 735 736 AcpiGbl_NextResourceId++; 737 if (AcpiGbl_NextResourceId >= 256) 738 { 739 AcpiGbl_NextResourceId = 0; 740 AcpiGbl_NextPrefix++; 741 if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX) 742 { 743 AcpiGbl_NextPrefix = 0; 744 } 745 } 746 747 /* Change the resource descriptor name */ 748 749 ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]); 750} 751 752 753/******************************************************************************* 754 * 755 * FUNCTION: AcpiDmGetResourceTag 756 * 757 * PARAMETERS: BitIndex - Index into the resource descriptor 758 * Resource - Pointer to the raw resource data 759 * ResourceIndex - Index correspoinding to the resource type 760 * 761 * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match. 762 * 763 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag. 764 * 765 * Note: ResourceIndex should be previously validated and guaranteed to ve 766 * valid. 767 * 768 ******************************************************************************/ 769 770static char * 771AcpiDmGetResourceTag ( 772 UINT32 BitIndex, 773 AML_RESOURCE *Resource, 774 UINT8 ResourceIndex) 775{ 776 const ACPI_RESOURCE_TAG *TagList; 777 char *Tag = NULL; 778 779 780 /* Get the tag list for this resource descriptor type */ 781 782 TagList = AcpiGbl_ResourceTags[ResourceIndex]; 783 784 /* 785 * Handle descriptors that have multiple subtypes 786 */ 787 switch (Resource->DescriptorType) 788 { 789 case ACPI_RESOURCE_NAME_ADDRESS16: 790 case ACPI_RESOURCE_NAME_ADDRESS32: 791 case ACPI_RESOURCE_NAME_ADDRESS64: 792 case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64: 793 794 /* 795 * Subtype differentiation is the flags. 796 * Kindof brute force, but just blindly search for an index match 797 */ 798 if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE) 799 { 800 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags); 801 } 802 else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE) 803 { 804 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags); 805 } 806 807 /* If we found a match, all done. Else, drop to normal search below */ 808 809 if (Tag) 810 { 811 return (Tag); 812 } 813 break; 814 815 case ACPI_RESOURCE_NAME_GPIO: 816 817 /* GPIO connection has 2 subtypes: Interrupt and I/O */ 818 819 if (Resource->Gpio.ConnectionType > AML_RESOURCE_MAX_GPIOTYPE) 820 { 821 return (NULL); 822 } 823 824 TagList = AcpiGbl_GpioResourceTags[Resource->Gpio.ConnectionType]; 825 break; 826 827 case ACPI_RESOURCE_NAME_SERIAL_BUS: 828 829 /* SerialBus has 3 subtypes: I2C, SPI, and UART */ 830 831 if ((Resource->CommonSerialBus.Type == 0) || 832 (Resource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE)) 833 { 834 return (NULL); 835 } 836 837 TagList = AcpiGbl_SerialResourceTags[Resource->CommonSerialBus.Type]; 838 break; 839 840 default: 841 break; 842 } 843 844 /* Search for a match against the BitIndex */ 845 846 if (TagList) 847 { 848 Tag = AcpiDmSearchTagList (BitIndex, TagList); 849 } 850 851 return (Tag); 852} 853 854 855/******************************************************************************* 856 * 857 * FUNCTION: AcpiDmSearchTagList 858 * 859 * PARAMETERS: BitIndex - Index into the resource descriptor 860 * TagList - List to search 861 * 862 * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found. 863 * 864 * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches 865 * a fixed offset to a symbolic resource tag name. 866 * 867 ******************************************************************************/ 868 869static char * 870AcpiDmSearchTagList ( 871 UINT32 BitIndex, 872 const ACPI_RESOURCE_TAG *TagList) 873{ 874 875 /* 876 * Walk the null-terminated tag list to find a matching bit offset. 877 * We are looking for an exact match. 878 */ 879 for ( ; TagList->Tag; TagList++) 880 { 881 if (BitIndex == TagList->BitIndex) 882 { 883 return (TagList->Tag); 884 } 885 } 886 887 /* A matching offset was not found */ 888 889 return (NULL); 890} 891 892 893/******************************************************************************* 894 * 895 * FUNCTION: AcpiDmFindResources 896 * 897 * PARAMETERS: Root - Root of the parse tree 898 * 899 * RETURN: None 900 * 901 * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each 902 * resource descriptor in each template is given a node -- used 903 * for later conversion of resource references to symbolic refs. 904 * 905 ******************************************************************************/ 906 907void 908AcpiDmFindResources ( 909 ACPI_PARSE_OBJECT *Root) 910{ 911 ACPI_PARSE_OBJECT *Op = Root; 912 ACPI_PARSE_OBJECT *Parent; 913 914 915 /* Walk the entire parse tree */ 916 917 while (Op) 918 { 919 /* We are interested in Buffer() declarations */ 920 921 if (Op->Common.AmlOpcode == AML_BUFFER_OP) 922 { 923 /* And only declarations of the form Name (XXXX, Buffer()... ) */ 924 925 Parent = Op->Common.Parent; 926 if (Parent->Common.AmlOpcode == AML_NAME_OP) 927 { 928 /* 929 * If the buffer is a resource template, add the individual 930 * resource descriptors to the namespace, as children of the 931 * buffer node. 932 */ 933 if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (Op))) 934 { 935 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; 936 AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op); 937 } 938 } 939 } 940 941 Op = AcpiPsGetDepthNext (Root, Op); 942 } 943} 944 945 946/******************************************************************************* 947 * 948 * FUNCTION: AcpiDmAddResourcesToNamespace 949 * 950 * PARAMETERS: BufferNode - Node for the parent buffer 951 * Op - Parse op for the buffer 952 * 953 * RETURN: None 954 * 955 * DESCRIPTION: Add an entire resource template to the namespace. Each 956 * resource descriptor is added as a namespace node. 957 * 958 ******************************************************************************/ 959 960static void 961AcpiDmAddResourcesToNamespace ( 962 ACPI_NAMESPACE_NODE *BufferNode, 963 ACPI_PARSE_OBJECT *Op) 964{ 965 ACPI_PARSE_OBJECT *NextOp; 966 967 968 /* Get to the ByteData list */ 969 970 NextOp = Op->Common.Value.Arg; 971 NextOp = NextOp->Common.Next; 972 if (!NextOp) 973 { 974 return; 975 } 976 977 /* Set Node and Op to point to each other */ 978 979 BufferNode->Op = Op; 980 Op->Common.Node = BufferNode; 981 982 /* 983 * Insert each resource into the namespace 984 * NextOp contains the Aml pointer and the Aml length 985 */ 986 AcpiUtWalkAmlResources ((UINT8 *) NextOp->Named.Data, 987 (ACPI_SIZE) NextOp->Common.Value.Integer, 988 AcpiDmAddResourceToNamespace, BufferNode); 989} 990 991 992/******************************************************************************* 993 * 994 * FUNCTION: AcpiDmAddResourceToNamespace 995 * 996 * PARAMETERS: ACPI_WALK_AML_CALLBACK 997 * BufferNode - Node for the parent buffer 998 * 999 * RETURN: Status 1000 * 1001 * DESCRIPTION: Add one resource descriptor to the namespace as a child of the 1002 * parent buffer. The same name is used for each descriptor. This 1003 * is changed later to a unique name if the resource is actually 1004 * referenced by an AML operator. 1005 * 1006 ******************************************************************************/ 1007 1008static ACPI_STATUS 1009AcpiDmAddResourceToNamespace ( 1010 UINT8 *Aml, 1011 UINT32 Length, 1012 UINT32 Offset, 1013 UINT8 ResourceIndex, 1014 void *Context) 1015{ 1016 ACPI_STATUS Status; 1017 ACPI_GENERIC_STATE ScopeInfo; 1018 ACPI_NAMESPACE_NODE *Node; 1019 1020 1021 /* TBD: Don't need to add descriptors that have no tags defined? */ 1022 1023 /* Add the resource to the namespace, as child of the buffer */ 1024 1025 ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context); 1026 Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE, 1027 ACPI_IMODE_LOAD_PASS2, 1028 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE, 1029 NULL, &Node); 1030 if (ACPI_FAILURE (Status)) 1031 { 1032 return (AE_OK); 1033 } 1034 1035 /* Set the name to the default, changed later if resource is referenced */ 1036 1037 Node->Name.Integer = ACPI_DEFAULT_RESNAME; 1038 1039 /* Save the offset of the descriptor (within the original buffer) */ 1040 1041 Node->Value = Offset; 1042 Node->Length = Length; 1043 return (AE_OK); 1044} 1045 1046