dmresrc.c revision 114237
1/******************************************************************************* 2 * 3 * Module Name: dmresrc.c - Resource Descriptor disassembly 4 * $Revision: 7 $ 5 * 6 ******************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 118#include "acpi.h" 119#include "amlcode.h" 120#include "acdisasm.h" 121 122#ifdef ACPI_DISASSEMBLER 123 124#define _COMPONENT ACPI_CA_DEBUGGER 125 ACPI_MODULE_NAME ("dbresrc") 126 127 128/******************************************************************************* 129 * 130 * FUNCTION: AcpiDmBitList 131 * 132 * PARAMETERS: Mask - 16-bit value corresponding to 16 interrupt 133 * or DMA values 134 * 135 * RETURN: None 136 * 137 * DESCRIPTION: Dump a bit mask as a list of individual interrupt/dma levels. 138 * 139 ******************************************************************************/ 140 141void 142AcpiDmBitList ( 143 UINT16 Mask) 144{ 145 UINT32 i; 146 BOOLEAN Previous = FALSE; 147 148 149 /* Open the initializer list */ 150 151 AcpiOsPrintf (") {"); 152 153 /* Examine each bit */ 154 155 for (i = 0; i < 16; i++) 156 { 157 /* Only interested in bits that are set to 1 */ 158 159 if (Mask & 1) 160 { 161 if (Previous) 162 { 163 AcpiOsPrintf (","); 164 } 165 Previous = TRUE; 166 AcpiOsPrintf ("%d", i); 167 } 168 169 Mask >>= 1; 170 } 171 172 /* Close list */ 173 174 AcpiOsPrintf ("}\n"); 175} 176 177 178/******************************************************************************* 179 * 180 * FUNCTION: AcpiDmResourceDescriptor 181 * 182 * PARAMETERS: Info - Curent parse tree walk info 183 * ByteData - Pointer to the byte list data 184 * ByteCount - Length of the byte list 185 * 186 * RETURN: None 187 * 188 * DESCRIPTION: Dump the contents of one ResourceTemplate descriptor. 189 * 190 ******************************************************************************/ 191 192void 193AcpiDmResourceDescriptor ( 194 ACPI_OP_WALK_INFO *Info, 195 UINT8 *ByteData, 196 UINT32 ByteCount) 197{ 198 ACPI_NATIVE_UINT CurrentByteOffset; 199 UINT8 CurrentByte; 200 UINT8 DescriptorId; 201 UINT32 Length; 202 void *DescriptorBody; 203 UINT32 Level; 204 BOOLEAN DependentFns = FALSE; 205 206 207 Level = Info->Level; 208 209 for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount; ) 210 { 211 CurrentByte = ByteData[CurrentByteOffset]; 212 DescriptorBody = &ByteData[CurrentByteOffset]; 213 214 if (CurrentByte & ACPI_RDESC_TYPE_LARGE) 215 { 216 DescriptorId = CurrentByte; 217 Length = (* (ACPI_CAST_PTR (UINT16, &ByteData[CurrentByteOffset + 1]))); 218 CurrentByteOffset += 3; 219 } 220 else 221 { 222 DescriptorId = (UINT8) (CurrentByte & 0xF8); 223 Length = (ByteData[CurrentByteOffset] & 0x7); 224 CurrentByteOffset += 1; 225 } 226 227 CurrentByteOffset += (ACPI_NATIVE_UINT) Length; 228 229 /* Determine type of resource */ 230 231 switch (DescriptorId) 232 { 233 /* 234 * "Small" type descriptors 235 */ 236 case ACPI_RDESC_TYPE_IRQ_FORMAT: 237 238 AcpiDmIrqDescriptor (DescriptorBody, Length, Level); 239 break; 240 241 242 case ACPI_RDESC_TYPE_DMA_FORMAT: 243 244 AcpiDmDmaDescriptor (DescriptorBody, Length, Level); 245 break; 246 247 248 case ACPI_RDESC_TYPE_START_DEPENDENT: 249 250 /* Finish a previous StartDependentFns */ 251 252 if (DependentFns) 253 { 254 Level--; 255 AcpiDmIndent (Level); 256 AcpiOsPrintf ("}\n"); 257 } 258 259 AcpiDmStartDependentDescriptor (DescriptorBody, Length, Level); 260 DependentFns = TRUE; 261 Level++; 262 break; 263 264 265 case ACPI_RDESC_TYPE_END_DEPENDENT: 266 267 Level--; 268 DependentFns = FALSE; 269 AcpiDmEndDependentDescriptor (DescriptorBody, Length, Level); 270 break; 271 272 273 case ACPI_RDESC_TYPE_IO_PORT: 274 275 AcpiDmIoDescriptor (DescriptorBody, Length, Level); 276 break; 277 278 279 case ACPI_RDESC_TYPE_FIXED_IO_PORT: 280 281 AcpiDmFixedIoDescriptor (DescriptorBody, Length, Level); 282 break; 283 284 285 case ACPI_RDESC_TYPE_SMALL_VENDOR: 286 287 AcpiDmVendorSmallDescriptor (DescriptorBody, Length, Level); 288 break; 289 290 291 case ACPI_RDESC_TYPE_END_TAG: 292 293 if (DependentFns) 294 { 295 /* 296 * Close an open StartDependentDescriptor. This indicates a missing 297 * EndDependentDescriptor. 298 */ 299 Level--; 300 DependentFns = FALSE; 301 AcpiDmIndent (Level); 302 AcpiOsPrintf ("}\n"); 303 AcpiDmIndent (Level); 304 305 AcpiOsPrintf ("/*** Missing EndDependentFunctions descriptor */"); 306 307 /* 308 * We could fix the problem, but then the ASL would not match the AML 309 * So, we don't do this: 310 * AcpiDmEndDependentDescriptor (DescriptorBody, Length, Level); 311 */ 312 } 313 return; 314 315 316 /* 317 * "Large" type descriptors 318 */ 319 case ACPI_RDESC_TYPE_MEMORY_24: 320 321 AcpiDmMemory24Descriptor (DescriptorBody, Length, Level); 322 break; 323 324 325 case ACPI_RDESC_TYPE_GENERAL_REGISTER: 326 327 AcpiDmGenericRegisterDescriptor (DescriptorBody, Length, Level); 328 break; 329 330 331 case ACPI_RDESC_TYPE_LARGE_VENDOR: 332 333 AcpiDmVendorLargeDescriptor (DescriptorBody, Length, Level); 334 break; 335 336 337 case ACPI_RDESC_TYPE_MEMORY_32: 338 339 AcpiDmMemory32Descriptor (DescriptorBody, Length, Level); 340 break; 341 342 343 case ACPI_RDESC_TYPE_FIXED_MEMORY_32: 344 345 AcpiDmFixedMem32Descriptor (DescriptorBody, Length, Level); 346 break; 347 348 349 case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE: 350 351 AcpiDmDwordDescriptor (DescriptorBody, Length, Level); 352 break; 353 354 355 case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE: 356 357 AcpiDmWordDescriptor (DescriptorBody, Length, Level); 358 break; 359 360 361 case ACPI_RDESC_TYPE_EXTENDED_XRUPT: 362 363 AcpiDmInterruptDescriptor (DescriptorBody, Length, Level); 364 break; 365 366 367 case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE: 368 369 AcpiDmQwordDescriptor (DescriptorBody, Length, Level); 370 break; 371 372 373 default: 374 /* 375 * Anything else is unrecognized. 376 * 377 * Since the entire resource buffer has been already walked and 378 * validated, this is a very serious error indicating that someone 379 * overwrote the buffer. 380 */ 381 AcpiOsPrintf ("/* Unknown Resource type (%X) */\n", DescriptorId); 382 return; 383 } 384 } 385} 386 387 388/******************************************************************************* 389 * 390 * FUNCTION: AcpiDmIsResourceDescriptor 391 * 392 * PARAMETERS: Op - Buffer Op to be examined 393 * 394 * RETURN: TRUE if this Buffer Op contains a valid resource 395 * descriptor. 396 * 397 * DESCRIPTION: Walk a byte list to determine if it consists of a valid set 398 * of resource descriptors. Nothing is output. 399 * 400 ******************************************************************************/ 401 402BOOLEAN 403AcpiDmIsResourceDescriptor ( 404 ACPI_PARSE_OBJECT *Op) 405{ 406 UINT8 *ByteData; 407 UINT32 ByteCount; 408 ACPI_PARSE_OBJECT *NextOp; 409 ACPI_NATIVE_UINT CurrentByteOffset; 410 UINT8 CurrentByte; 411 UINT8 DescriptorId; 412 UINT32 Length; 413 414 415 /* This op must be a buffer */ 416 417 if (Op->Common.AmlOpcode != AML_BUFFER_OP) 418 { 419 return FALSE; 420 } 421 422 /* Get to the ByteData list */ 423 424 NextOp = Op->Common.Value.Arg; 425 NextOp = NextOp->Common.Next; 426 if (!NextOp) 427 { 428 return (FALSE); 429 } 430 431 /* Extract the data pointer and data length */ 432 433 ByteCount = NextOp->Common.Value.Integer32; 434 ByteData = NextOp->Named.Data; 435 436 /* The list must have a valid END_TAG */ 437 438 if (ByteData[ByteCount-2] != (ACPI_RDESC_TYPE_END_TAG | 1)) 439 { 440 return FALSE; 441 } 442 443 /* 444 * Walk the byte list. Abort on any invalid descriptor ID or 445 * or length 446 */ 447 for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount; ) 448 { 449 CurrentByte = ByteData[CurrentByteOffset]; 450 451 /* Large or small resource? */ 452 453 if (CurrentByte & ACPI_RDESC_TYPE_LARGE) 454 { 455 DescriptorId = CurrentByte; 456 Length = (* (ACPI_CAST_PTR (UINT16, (&ByteData[CurrentByteOffset + 1])))); 457 CurrentByteOffset += 3; 458 } 459 else 460 { 461 DescriptorId = (UINT8) (CurrentByte & 0xF8); 462 Length = (ByteData[CurrentByteOffset] & 0x7); 463 CurrentByteOffset += 1; 464 } 465 466 CurrentByteOffset += (ACPI_NATIVE_UINT) Length; 467 468 /* Determine type of resource */ 469 470 switch (DescriptorId) 471 { 472 /* 473 * "Small" type descriptors 474 */ 475 case ACPI_RDESC_TYPE_IRQ_FORMAT: 476 case ACPI_RDESC_TYPE_DMA_FORMAT: 477 case ACPI_RDESC_TYPE_START_DEPENDENT: 478 case ACPI_RDESC_TYPE_END_DEPENDENT: 479 case ACPI_RDESC_TYPE_IO_PORT: 480 case ACPI_RDESC_TYPE_FIXED_IO_PORT: 481 case ACPI_RDESC_TYPE_SMALL_VENDOR: 482 /* 483 * "Large" type descriptors 484 */ 485 case ACPI_RDESC_TYPE_MEMORY_24: 486 case ACPI_RDESC_TYPE_GENERAL_REGISTER: 487 case ACPI_RDESC_TYPE_LARGE_VENDOR: 488 case ACPI_RDESC_TYPE_MEMORY_32: 489 case ACPI_RDESC_TYPE_FIXED_MEMORY_32: 490 case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE: 491 case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE: 492 case ACPI_RDESC_TYPE_EXTENDED_XRUPT: 493 case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE: 494 495 /* Valid descriptor ID, keep going */ 496 497 break; 498 499 500 case ACPI_RDESC_TYPE_END_TAG: 501 502 /* We must be at the end of the ByteList */ 503 504 if (CurrentByteOffset != ByteCount) 505 { 506 return (FALSE); 507 } 508 509 /* All descriptors/lengths valid, this is a valid descriptor */ 510 511 return (TRUE); 512 513 514 default: 515 516 /* Bad descriptor, abort */ 517 518 return (FALSE); 519 } 520 } 521 522 /* Did not find an END_TAG, something seriously wrong */ 523 524 return (FALSE); 525} 526 527 528#endif 529