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 - 2017, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include "acpi.h" 153 #include "accommon.h" 154 #include "acparser.h" 155 #include "acdisasm.h" 156 #include "acnamesp.h" 157 #include "amlcode.h" 158 159 /* This module used for application-level code only */ 160 161 #define _COMPONENT ACPI_CA_DISASSEMBLER 162 ACPI_MODULE_NAME ("dmrestag") 163 164 /* Local prototypes */ 165 166 static void 167 AcpiDmUpdateResourceName ( 168 ACPI_NAMESPACE_NODE *ResourceNode); 169 170 static char * 171 AcpiDmSearchTagList ( 172 UINT32 BitIndex, 173 const ACPI_RESOURCE_TAG *TagList); 174 175 static char * 176 AcpiDmGetResourceTag ( 177 UINT32 BitIndex, 178 AML_RESOURCE *Resource, 179 UINT8 ResourceIndex); 180 181 static char * 182 AcpiGetTagPathname ( 183 ACPI_PARSE_OBJECT *Op, 184 ACPI_NAMESPACE_NODE *BufferNode, 185 ACPI_NAMESPACE_NODE *ResourceNode, 186 UINT32 BitIndex); 187 188 static ACPI_NAMESPACE_NODE * 189 AcpiDmGetResourceNode ( 190 ACPI_NAMESPACE_NODE *BufferNode, 191 UINT32 BitIndex); 192 193 static ACPI_STATUS 194 AcpiDmAddResourceToNamespace ( 195 UINT8 *Aml, 196 UINT32 Length, 197 UINT32 Offset, 198 UINT8 ResourceIndex, 199 void **Context); 200 201 static void 202 AcpiDmAddResourcesToNamespace ( 203 ACPI_NAMESPACE_NODE *BufferNode, 204 ACPI_PARSE_OBJECT *Op); 205 206 207 /****************************************************************************** 208 * 209 * Resource Tag tables 210 * 211 * These are the predefined tags that refer to elements of a resource 212 * descriptor. Each name and offset is defined in the ACPI specification. 213 * 214 * Each table entry contains the bit offset of the field and the associated 215 * name. 216 * 217 ******************************************************************************/ 218 219 static const ACPI_RESOURCE_TAG AcpiDmIrqTags[] = 220 { 221 {( 1 * 8), ACPI_RESTAG_INTERRUPT}, 222 {( 3 * 8) + 0, ACPI_RESTAG_INTERRUPTTYPE}, 223 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTLEVEL}, 224 {( 3 * 8) + 4, ACPI_RESTAG_INTERRUPTSHARE}, 225 {0, NULL} 226 }; 227 228 static const ACPI_RESOURCE_TAG AcpiDmDmaTags[] = 229 { 230 {( 1 * 8), ACPI_RESTAG_DMA}, 231 {( 2 * 8) + 0, ACPI_RESTAG_XFERTYPE}, 232 {( 2 * 8) + 2, ACPI_RESTAG_BUSMASTER}, 233 {( 2 * 8) + 5, ACPI_RESTAG_DMATYPE}, 234 {0, NULL} 235 }; 236 237 static const ACPI_RESOURCE_TAG AcpiDmIoTags[] = 238 { 239 {( 1 * 8) + 0, ACPI_RESTAG_DECODE}, 240 {( 2 * 8), ACPI_RESTAG_MINADDR}, 241 {( 4 * 8), ACPI_RESTAG_MAXADDR}, 242 {( 6 * 8), ACPI_RESTAG_ALIGNMENT}, 243 {( 7 * 8), ACPI_RESTAG_LENGTH}, 244 {0, NULL} 245 }; 246 247 static const ACPI_RESOURCE_TAG AcpiDmFixedIoTags[] = 248 { 249 {( 1 * 8), ACPI_RESTAG_BASEADDRESS}, 250 {( 3 * 8), ACPI_RESTAG_LENGTH}, 251 {0, NULL} 252 }; 253 254 static const ACPI_RESOURCE_TAG AcpiDmFixedDmaTags[] = 255 { 256 {( 1 * 8), ACPI_RESTAG_DMA}, 257 {( 3 * 8), ACPI_RESTAG_DMATYPE}, 258 {( 5 * 8), ACPI_RESTAG_XFERTYPE}, 259 {0, NULL} 260 }; 261 262 static const ACPI_RESOURCE_TAG AcpiDmMemory24Tags[] = 263 { 264 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 265 {( 4 * 8), ACPI_RESTAG_MINADDR}, 266 {( 6 * 8), ACPI_RESTAG_MAXADDR}, 267 {( 8 * 8), ACPI_RESTAG_ALIGNMENT}, 268 {(10 * 8), ACPI_RESTAG_LENGTH}, 269 {0, NULL} 270 }; 271 272 static const ACPI_RESOURCE_TAG AcpiDmRegisterTags[] = 273 { 274 {( 3 * 8), ACPI_RESTAG_ADDRESSSPACE}, 275 {( 4 * 8), ACPI_RESTAG_REGISTERBITWIDTH}, 276 {( 5 * 8), ACPI_RESTAG_REGISTERBITOFFSET}, 277 {( 6 * 8), ACPI_RESTAG_ACCESSSIZE}, 278 {( 7 * 8), ACPI_RESTAG_ADDRESS}, 279 {0, NULL} 280 }; 281 282 static const ACPI_RESOURCE_TAG AcpiDmMemory32Tags[] = 283 { 284 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 285 {( 4 * 8), ACPI_RESTAG_MINADDR}, 286 {( 8 * 8), ACPI_RESTAG_MAXADDR}, 287 {(12 * 8), ACPI_RESTAG_ALIGNMENT}, 288 {(16 * 8), ACPI_RESTAG_LENGTH}, 289 {0, NULL} 290 }; 291 292 static const ACPI_RESOURCE_TAG AcpiDmFixedMemory32Tags[] = 293 { 294 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 295 {( 4 * 8), ACPI_RESTAG_BASEADDRESS}, 296 {( 8 * 8), ACPI_RESTAG_LENGTH}, 297 {0, NULL} 298 }; 299 300 static const ACPI_RESOURCE_TAG AcpiDmInterruptTags[] = 301 { 302 {( 3 * 8) + 1, ACPI_RESTAG_INTERRUPTTYPE}, 303 {( 3 * 8) + 2, ACPI_RESTAG_INTERRUPTLEVEL}, 304 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 305 {( 5 * 8), ACPI_RESTAG_INTERRUPT}, 306 {0, NULL} 307 }; 308 309 static const ACPI_RESOURCE_TAG AcpiDmAddress16Tags[] = 310 { 311 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 312 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 313 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 314 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 315 {( 8 * 8), ACPI_RESTAG_MINADDR}, 316 {(10 * 8), ACPI_RESTAG_MAXADDR}, 317 {(12 * 8), ACPI_RESTAG_TRANSLATION}, 318 {(14 * 8), ACPI_RESTAG_LENGTH}, 319 {0, NULL} 320 }; 321 322 static const ACPI_RESOURCE_TAG AcpiDmAddress32Tags[] = 323 { 324 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 325 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 326 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 327 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 328 {(10 * 8), ACPI_RESTAG_MINADDR}, 329 {(14 * 8), ACPI_RESTAG_MAXADDR}, 330 {(18 * 8), ACPI_RESTAG_TRANSLATION}, 331 {(22 * 8), ACPI_RESTAG_LENGTH}, 332 {0, NULL} 333 }; 334 335 static const ACPI_RESOURCE_TAG AcpiDmAddress64Tags[] = 336 { 337 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 338 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 339 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 340 {( 6 * 8), ACPI_RESTAG_GRANULARITY}, 341 {(14 * 8), ACPI_RESTAG_MINADDR}, 342 {(22 * 8), ACPI_RESTAG_MAXADDR}, 343 {(30 * 8), ACPI_RESTAG_TRANSLATION}, 344 {(38 * 8), ACPI_RESTAG_LENGTH}, 345 {0, NULL} 346 }; 347 348 static const ACPI_RESOURCE_TAG AcpiDmExtendedAddressTags[] = 349 { 350 {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, 351 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, 352 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, 353 {( 8 * 8), ACPI_RESTAG_GRANULARITY}, 354 {(16 * 8), ACPI_RESTAG_MINADDR}, 355 {(24 * 8), ACPI_RESTAG_MAXADDR}, 356 {(32 * 8), ACPI_RESTAG_TRANSLATION}, 357 {(40 * 8), ACPI_RESTAG_LENGTH}, 358 {(48 * 8), ACPI_RESTAG_TYPESPECIFICATTRIBUTES}, 359 {0, NULL} 360 }; 361 362 /* Subtype tables for GPIO descriptors */ 363 364 static const ACPI_RESOURCE_TAG AcpiDmGpioIntTags[] = 365 { 366 {( 7 * 8) + 0, ACPI_RESTAG_MODE}, 367 {( 7 * 8) + 1, ACPI_RESTAG_POLARITY}, 368 {( 7 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 369 {( 9 * 8), ACPI_RESTAG_PINCONFIG}, 370 {(10 * 8), ACPI_RESTAG_DRIVESTRENGTH}, 371 {(12 * 8), ACPI_RESTAG_DEBOUNCETIME}, 372 {0, NULL} 373 }; 374 375 static const ACPI_RESOURCE_TAG AcpiDmGpioIoTags[] = 376 { 377 {( 7 * 8) + 0, ACPI_RESTAG_IORESTRICTION}, 378 {( 7 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, 379 {( 9 * 8), ACPI_RESTAG_PINCONFIG}, 380 {(10 * 8), ACPI_RESTAG_DRIVESTRENGTH}, 381 {(12 * 8), ACPI_RESTAG_DEBOUNCETIME}, 382 {0, NULL} 383 }; 384 385 /* Subtype tables for SerialBus descriptors */ 386 387 static const ACPI_RESOURCE_TAG AcpiDmI2cSerialBusTags[] = 388 { 389 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, 390 {( 6 * 8) + 2, ACPI_RESTAG_INTERRUPTSHARE}, /* V2 - ACPI 6.0 */ 391 {( 7 * 8) + 0, ACPI_RESTAG_MODE}, 392 {(12 * 8), ACPI_RESTAG_SPEED}, 393 {(16 * 8), ACPI_RESTAG_ADDRESS}, 394 {0, NULL} 395 }; 396 397 static const ACPI_RESOURCE_TAG AcpiDmSpiSerialBusTags[] = 398 { 399 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, 400 {( 6 * 8) + 2, ACPI_RESTAG_INTERRUPTSHARE}, /* V2 - ACPI 6.0 */ 401 {( 7 * 8) + 0, ACPI_RESTAG_MODE}, 402 {( 7 * 8) + 1, ACPI_RESTAG_DEVICEPOLARITY}, 403 {(12 * 8), ACPI_RESTAG_SPEED}, 404 {(16 * 8), ACPI_RESTAG_LENGTH}, 405 {(17 * 8), ACPI_RESTAG_PHASE}, 406 {(18 * 8), ACPI_RESTAG_POLARITY}, 407 {(19 * 8), ACPI_RESTAG_ADDRESS}, 408 {0, NULL} 409 }; 410 411 static const ACPI_RESOURCE_TAG AcpiDmUartSerialBusTags[] = 412 { 413 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, /* Note: not part of original macro */ 414 {( 6 * 8) + 2, ACPI_RESTAG_INTERRUPTSHARE}, /* V2 - ACPI 6.0 */ 415 {( 7 * 8) + 0, ACPI_RESTAG_FLOWCONTROL}, 416 {( 7 * 8) + 2, ACPI_RESTAG_STOPBITS}, 417 {( 7 * 8) + 4, ACPI_RESTAG_LENGTH}, 418 {( 7 * 8) + 7, ACPI_RESTAG_ENDIANNESS}, 419 {(12 * 8), ACPI_RESTAG_SPEED}, 420 {(16 * 8), ACPI_RESTAG_LENGTH_RX}, 421 {(18 * 8), ACPI_RESTAG_LENGTH_TX}, 422 {(20 * 8), ACPI_RESTAG_PARITY}, 423 {(21 * 8), ACPI_RESTAG_LINE}, 424 {0, NULL} 425 }; 426 427 /* Subtype tables for PinFunction descriptor */ 428 429 static const ACPI_RESOURCE_TAG AcpiDmPinFunctionTags[] = 430 { 431 {( 4 * 8), ACPI_RESTAG_INTERRUPTSHARE}, 432 {( 6 * 8), ACPI_RESTAG_PINCONFIG}, 433 {( 7 * 8), ACPI_RESTAG_FUNCTION}, 434 {0, NULL} 435 }; 436 437 /* Subtype tables for PinConfig descriptor */ 438 439 static const ACPI_RESOURCE_TAG AcpiDmPinConfigTags[] = 440 { 441 {( 4 * 8), ACPI_RESTAG_INTERRUPTSHARE}, 442 {( 6 * 8), ACPI_RESTAG_PINCONFIG_TYPE}, 443 {( 7 * 8), ACPI_RESTAG_PINCONFIG_VALUE}, 444 {0, NULL} 445 }; 446 447 /* Subtype tables for PinGroupFunction descriptor */ 448 449 static const ACPI_RESOURCE_TAG AcpiDmPinGroupFunctionTags[] = 450 { 451 {( 6 * 8), ACPI_RESTAG_FUNCTION}, 452 {0, NULL} 453 }; 454 455 /* Subtype tables for Address descriptor type-specific flags */ 456 457 static const ACPI_RESOURCE_TAG AcpiDmMemoryFlagTags[] = 458 { 459 {( 5 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, 460 {( 5 * 8) + 1, ACPI_RESTAG_MEMTYPE}, 461 {( 5 * 8) + 3, ACPI_RESTAG_MEMATTRIBUTES}, 462 {( 5 * 8) + 5, ACPI_RESTAG_TYPE}, 463 {0, NULL} 464 }; 465 466 static const ACPI_RESOURCE_TAG AcpiDmIoFlagTags[] = 467 { 468 {( 5 * 8) + 0, ACPI_RESTAG_RANGETYPE}, 469 {( 5 * 8) + 4, ACPI_RESTAG_TYPE}, 470 {( 5 * 8) + 5, ACPI_RESTAG_TRANSTYPE}, 471 {0, NULL} 472 }; 473 474 475 /* 476 * Dispatch table used to obtain the correct tag table for a descriptor. 477 * 478 * A NULL in this table means one of three things: 479 * 1) The descriptor ID is reserved and invalid 480 * 2) The descriptor has no tags associated with it 481 * 3) The descriptor has subtypes and a separate table will be used. 482 */ 483 static const ACPI_RESOURCE_TAG *AcpiGbl_ResourceTags[] = 484 { 485 /* Small descriptors */ 486 487 NULL, /* 0x00, Reserved */ 488 NULL, /* 0x01, Reserved */ 489 NULL, /* 0x02, Reserved */ 490 NULL, /* 0x03, Reserved */ 491 AcpiDmIrqTags, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ 492 AcpiDmDmaTags, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ 493 NULL, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ 494 NULL, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ 495 AcpiDmIoTags, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ 496 AcpiDmFixedIoTags, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ 497 AcpiDmFixedDmaTags, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */ 498 NULL, /* 0x0B, Reserved */ 499 NULL, /* 0x0C, Reserved */ 500 NULL, /* 0x0D, Reserved */ 501 NULL, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ 502 NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ 503 504 /* Large descriptors */ 505 506 NULL, /* 0x00, Reserved */ 507 AcpiDmMemory24Tags, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ 508 AcpiDmRegisterTags, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ 509 NULL, /* 0x03, Reserved */ 510 NULL, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ 511 AcpiDmMemory32Tags, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ 512 AcpiDmFixedMemory32Tags, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ 513 AcpiDmAddress32Tags, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ 514 AcpiDmAddress16Tags, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ 515 AcpiDmInterruptTags, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ 516 AcpiDmAddress64Tags, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ 517 AcpiDmExtendedAddressTags, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ 518 NULL, /* 0x0C, ACPI_RESOURCE_NAME_GPIO - Use Subtype table below */ 519 AcpiDmPinFunctionTags, /* 0x0D, ACPI_RESOURCE_NAME_PIN_FUNCTION */ 520 NULL, /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use Subtype table below */ 521 AcpiDmPinConfigTags, /* 0x0F, ACPI_RESOURCE_NAME_PIN_CONFIG */ 522 NULL, /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */ 523 AcpiDmPinGroupFunctionTags, /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */ 524 AcpiDmPinConfigTags, /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG - Same as PinConfig */ 525 }; 526 527 /* GPIO Subtypes */ 528 529 static const ACPI_RESOURCE_TAG *AcpiGbl_GpioResourceTags[] = 530 { 531 AcpiDmGpioIntTags, /* 0x00 Interrupt Connection */ 532 AcpiDmGpioIoTags /* 0x01 I/O Connection */ 533 }; 534 535 /* Serial Bus Subtypes */ 536 537 static const ACPI_RESOURCE_TAG *AcpiGbl_SerialResourceTags[] = 538 { 539 NULL, /* 0x00 Reserved */ 540 AcpiDmI2cSerialBusTags, /* 0x01 I2C SerialBus */ 541 AcpiDmSpiSerialBusTags, /* 0x02 SPI SerialBus */ 542 AcpiDmUartSerialBusTags /* 0x03 UART SerialBus */ 543 }; 544 545 /* 546 * Globals used to generate unique resource descriptor names. We use names that 547 * start with underscore and a prefix letter that is not used by other ACPI 548 * reserved names. To this, we append hex 0x00 through 0xFF. These 5 prefixes 549 * allow for 5*256 = 1280 unique names, probably sufficient for any single ASL 550 * file. If this becomes too small, we can use alpha+numerals for a total 551 * of 5*36*36 = 6480. 552 */ 553 #define ACPI_NUM_RES_PREFIX 5 554 555 static UINT32 AcpiGbl_NextResourceId = 0; 556 static UINT8 AcpiGbl_NextPrefix = 0; 557 static char AcpiGbl_Prefix[ACPI_NUM_RES_PREFIX] = 558 {'Y','Z','J','K','X'}; 559 560 561 /******************************************************************************* 562 * 563 * FUNCTION: AcpiDmCheckResourceReference 564 * 565 * PARAMETERS: Op - Parse Op for the AML opcode 566 * WalkState - Current walk state (with valid scope) 567 * 568 * RETURN: None 569 * 570 * DESCRIPTION: Convert a reference to a resource descriptor to a symbolic 571 * reference if possible 572 * 573 * NOTE: Bit index is used to transparently handle both resource bit 574 * fields and byte fields. 575 * 576 ******************************************************************************/ 577 578 void 579 AcpiDmCheckResourceReference ( 580 ACPI_PARSE_OBJECT *Op, 581 ACPI_WALK_STATE *WalkState) 582 { 583 ACPI_STATUS Status; 584 ACPI_PARSE_OBJECT *BufferNameOp; 585 ACPI_PARSE_OBJECT *IndexOp; 586 ACPI_NAMESPACE_NODE *BufferNode; 587 ACPI_NAMESPACE_NODE *ResourceNode; 588 const ACPI_OPCODE_INFO *OpInfo; 589 UINT32 BitIndex; 590 591 592 /* We are only interested in the CreateXxxxField opcodes */ 593 594 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 595 if (OpInfo->Type != AML_TYPE_CREATE_FIELD) 596 { 597 return; 598 } 599 600 /* Get the buffer term operand */ 601 602 BufferNameOp = AcpiPsGetDepthNext (NULL, Op); 603 604 /* Must be a named buffer, not an arg or local or method call */ 605 606 if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP) 607 { 608 return; 609 } 610 611 /* Get the Index term, must be an integer constant to convert */ 612 613 IndexOp = BufferNameOp->Common.Next; 614 615 /* Major cheat: The Node field is also used for the Tag ptr. Clear it now */ 616 617 IndexOp->Common.Node = NULL; 618 619 OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode); 620 if (OpInfo->ObjectType != ACPI_TYPE_INTEGER) 621 { 622 return; 623 } 624 625 /* Get the bit offset of the descriptor within the buffer */ 626 627 if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) || 628 (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)) 629 { 630 /* Index operand is a bit offset */ 631 632 BitIndex = (UINT32) IndexOp->Common.Value.Integer; 633 } 634 else 635 { 636 /* Index operand is a byte offset, convert to bits */ 637 638 BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer); 639 } 640 641 /* Lookup the buffer in the namespace */ 642 643 Status = AcpiNsLookup (WalkState->ScopeInfo, 644 BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER, 645 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, 646 &BufferNode); 647 if (ACPI_FAILURE (Status)) 648 { 649 return; 650 } 651 652 /* Validate object type, we must have a buffer */ 653 654 if (BufferNode->Type != ACPI_TYPE_BUFFER) 655 { 656 return; 657 } 658 659 /* Find the resource descriptor node corresponding to the index */ 660 661 ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex); 662 if (!ResourceNode) 663 { 664 return; 665 } 666 667 /* Translate the Index to a resource tag pathname */ 668 669 AcpiGetTagPathname (IndexOp, BufferNode, ResourceNode, BitIndex); 670 } 671 672 673 /******************************************************************************* 674 * 675 * FUNCTION: AcpiDmGetResourceNode 676 * 677 * PARAMETERS: BufferNode - Node for the parent buffer 678 * BitIndex - Index into the resource descriptor 679 * 680 * RETURN: Namespace node for the resource descriptor. NULL if not found 681 * 682 * DESCRIPTION: Find a resource descriptor that corresponds to the bit index 683 * 684 ******************************************************************************/ 685 686 static ACPI_NAMESPACE_NODE * 687 AcpiDmGetResourceNode ( 688 ACPI_NAMESPACE_NODE *BufferNode, 689 UINT32 BitIndex) 690 { 691 ACPI_NAMESPACE_NODE *Node; 692 UINT32 ByteIndex = ACPI_DIV_8 (BitIndex); 693 694 695 /* 696 * Child list contains an entry for each resource descriptor. Find 697 * the descriptor that corresponds to the Index. 698 * 699 * If there are no children, this is not a resource template 700 */ 701 Node = BufferNode->Child; 702 while (Node) 703 { 704 /* 705 * Check if the Index falls within this resource. 706 * 707 * Value contains the resource offset, Object contains the resource 708 * length (both in bytes) 709 */ 710 if ((ByteIndex >= Node->Value) && 711 (ByteIndex < (Node->Value + Node->Length))) 712 { 713 return (Node); 714 } 715 716 Node = Node->Peer; 717 } 718 719 return (NULL); 720 } 721 722 723 /******************************************************************************* 724 * 725 * FUNCTION: AcpiGetTagPathname 726 * 727 * PARAMETERS: BufferNode - Node for the parent buffer 728 * ResourceNode - Node for a resource descriptor 729 * BitIndex - Index into the resource descriptor 730 * 731 * RETURN: Full pathname for a resource tag. NULL if no match. 732 * Path is returned in AML (packed) format. 733 * 734 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname) 735 * 736 ******************************************************************************/ 737 738 static char * 739 AcpiGetTagPathname ( 740 ACPI_PARSE_OBJECT *IndexOp, 741 ACPI_NAMESPACE_NODE *BufferNode, 742 ACPI_NAMESPACE_NODE *ResourceNode, 743 UINT32 BitIndex) 744 { 745 ACPI_STATUS Status; 746 UINT32 ResourceBitIndex; 747 UINT8 ResourceTableIndex; 748 ACPI_SIZE RequiredSize; 749 char *Pathname; 750 AML_RESOURCE *Aml; 751 ACPI_PARSE_OBJECT *Op; 752 char *InternalPath; 753 char *Tag; 754 755 756 /* Get the Op that contains the actual buffer data */ 757 758 Op = BufferNode->Op->Common.Value.Arg; 759 Op = Op->Common.Next; 760 if (!Op) 761 { 762 return (NULL); 763 } 764 765 /* Get the individual resource descriptor and validate it */ 766 767 Aml = ACPI_CAST_PTR ( 768 AML_RESOURCE, &Op->Named.Data[ResourceNode->Value]); 769 770 Status = AcpiUtValidateResource (NULL, Aml, &ResourceTableIndex); 771 if (ACPI_FAILURE (Status)) 772 { 773 return (NULL); 774 } 775 776 /* Get offset into this descriptor (from offset into entire buffer) */ 777 778 ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value); 779 780 /* Get the tag associated with this resource descriptor and offset */ 781 782 Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex); 783 if (!Tag) 784 { 785 return (NULL); 786 } 787 788 /* 789 * Now that we know that we have a reference that can be converted to a 790 * symbol, change the name of the resource to a unique name. 791 */ 792 AcpiDmUpdateResourceName (ResourceNode); 793 794 /* Get the full pathname to the parent buffer */ 795 796 RequiredSize = AcpiNsBuildNormalizedPath (BufferNode, NULL, 0, FALSE); 797 if (!RequiredSize) 798 { 799 return (NULL); 800 } 801 802 Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH); 803 if (!Pathname) 804 { 805 return (NULL); 806 } 807 808 (void) AcpiNsBuildNormalizedPath (BufferNode, Pathname, 809 RequiredSize, FALSE); 810 811 /* 812 * Create the full path to the resource and tag by: remove the buffer name, 813 * append the resource descriptor name, append a dot, append the tag name. 814 * 815 * TBD: Always using the full path is a bit brute force, the path can be 816 * often be optimized with carats (if the original buffer namepath is a 817 * single nameseg). This doesn't really matter, because these paths do not 818 * end up in the final compiled AML, it's just an appearance issue for the 819 * disassembled code. 820 */ 821 Pathname[strlen (Pathname) - ACPI_NAME_SIZE] = 0; 822 strncat (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE); 823 strcat (Pathname, "."); 824 strncat (Pathname, Tag, ACPI_NAME_SIZE); 825 826 /* Internalize the namepath to AML format */ 827 828 AcpiNsInternalizeName (Pathname, &InternalPath); 829 ACPI_FREE (Pathname); 830 831 /* Update the Op with the symbol */ 832 833 AcpiPsInitOp (IndexOp, AML_INT_NAMEPATH_OP); 834 IndexOp->Common.Value.String = InternalPath; 835 836 /* 837 * We will need the tag later. Cheat by putting it in the Node field. 838 * Note, Tag is a const that is part of a lookup table. 839 */ 840 IndexOp->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Tag); 841 return (InternalPath); 842 } 843 844 845 /******************************************************************************* 846 * 847 * FUNCTION: AcpiDmUpdateResourceName 848 * 849 * PARAMETERS: ResourceNode - Node for a resource descriptor 850 * 851 * RETURN: Stores new name in the ResourceNode 852 * 853 * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by 854 * both the disassembly of the descriptor itself and any symbolic 855 * references to the descriptor. Ignored if a unique name has 856 * already been assigned to the resource. 857 * 858 * NOTE: Single threaded, suitable for applications only! 859 * 860 ******************************************************************************/ 861 862 static void 863 AcpiDmUpdateResourceName ( 864 ACPI_NAMESPACE_NODE *ResourceNode) 865 { 866 char Name[ACPI_NAME_SIZE]; 867 868 869 /* Ignore if a unique name has already been assigned */ 870 871 if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME) 872 { 873 return; 874 } 875 876 /* Generate a new ACPI name for the descriptor */ 877 878 Name[0] = '_'; 879 Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix]; 880 Name[2] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 4); 881 Name[3] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 0); 882 883 /* Update globals for next name */ 884 885 AcpiGbl_NextResourceId++; 886 if (AcpiGbl_NextResourceId >= 256) 887 { 888 AcpiGbl_NextResourceId = 0; 889 AcpiGbl_NextPrefix++; 890 891 if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX) 892 { 893 AcpiGbl_NextPrefix = 0; 894 } 895 } 896 897 /* Change the resource descriptor name */ 898 899 ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]); 900 } 901 902 903 /******************************************************************************* 904 * 905 * FUNCTION: AcpiDmGetResourceTag 906 * 907 * PARAMETERS: BitIndex - Index into the resource descriptor 908 * Resource - Pointer to the raw resource data 909 * ResourceIndex - Index correspoinding to the resource type 910 * 911 * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match. 912 * 913 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag. 914 * 915 * Note: ResourceIndex should be previously validated and guaranteed to ve 916 * valid. 917 * 918 ******************************************************************************/ 919 920 static char * 921 AcpiDmGetResourceTag ( 922 UINT32 BitIndex, 923 AML_RESOURCE *Resource, 924 UINT8 ResourceIndex) 925 { 926 const ACPI_RESOURCE_TAG *TagList; 927 char *Tag = NULL; 928 929 930 /* Get the tag list for this resource descriptor type */ 931 932 TagList = AcpiGbl_ResourceTags[ResourceIndex]; 933 934 /* 935 * Handle descriptors that have multiple subtypes 936 */ 937 switch (Resource->DescriptorType) 938 { 939 case ACPI_RESOURCE_NAME_ADDRESS16: 940 case ACPI_RESOURCE_NAME_ADDRESS32: 941 case ACPI_RESOURCE_NAME_ADDRESS64: 942 case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64: 943 /* 944 * Subtype differentiation is the flags. 945 * Kindof brute force, but just blindly search for an index match 946 */ 947 if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE) 948 { 949 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags); 950 } 951 else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE) 952 { 953 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags); 954 } 955 956 /* If we found a match, all done. Else, drop to normal search below */ 957 958 if (Tag) 959 { 960 return (Tag); 961 } 962 break; 963 964 case ACPI_RESOURCE_NAME_GPIO: 965 966 /* GPIO connection has 2 subtypes: Interrupt and I/O */ 967 968 if (Resource->Gpio.ConnectionType > AML_RESOURCE_MAX_GPIOTYPE) 969 { 970 return (NULL); 971 } 972 973 TagList = AcpiGbl_GpioResourceTags[Resource->Gpio.ConnectionType]; 974 break; 975 976 case ACPI_RESOURCE_NAME_SERIAL_BUS: 977 978 /* SerialBus has 3 subtypes: I2C, SPI, and UART */ 979 980 if ((Resource->CommonSerialBus.Type == 0) || 981 (Resource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE)) 982 { 983 return (NULL); 984 } 985 986 TagList = AcpiGbl_SerialResourceTags[Resource->CommonSerialBus.Type]; 987 break; 988 989 default: 990 991 break; 992 } 993 994 /* Search for a match against the BitIndex */ 995 996 if (TagList) 997 { 998 Tag = AcpiDmSearchTagList (BitIndex, TagList); 999 } 1000 1001 return (Tag); 1002 } 1003 1004 1005 /******************************************************************************* 1006 * 1007 * FUNCTION: AcpiDmSearchTagList 1008 * 1009 * PARAMETERS: BitIndex - Index into the resource descriptor 1010 * TagList - List to search 1011 * 1012 * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found. 1013 * 1014 * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches 1015 * a fixed offset to a symbolic resource tag name. 1016 * 1017 ******************************************************************************/ 1018 1019 static char * 1020 AcpiDmSearchTagList ( 1021 UINT32 BitIndex, 1022 const ACPI_RESOURCE_TAG *TagList) 1023 { 1024 1025 /* 1026 * Walk the null-terminated tag list to find a matching bit offset. 1027 * We are looking for an exact match. 1028 */ 1029 for ( ; TagList->Tag; TagList++) 1030 { 1031 if (BitIndex == TagList->BitIndex) 1032 { 1033 return (TagList->Tag); 1034 } 1035 } 1036 1037 /* A matching offset was not found */ 1038 1039 return (NULL); 1040 } 1041 1042 1043 /******************************************************************************* 1044 * 1045 * FUNCTION: AcpiDmFindResources 1046 * 1047 * PARAMETERS: Root - Root of the parse tree 1048 * 1049 * RETURN: None 1050 * 1051 * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each 1052 * resource descriptor in each template is given a node -- used 1053 * for later conversion of resource references to symbolic refs. 1054 * 1055 ******************************************************************************/ 1056 1057 void 1058 AcpiDmFindResources ( 1059 ACPI_PARSE_OBJECT *Root) 1060 { 1061 ACPI_PARSE_OBJECT *Op = Root; 1062 ACPI_PARSE_OBJECT *Parent; 1063 1064 1065 /* Walk the entire parse tree */ 1066 1067 while (Op) 1068 { 1069 /* We are interested in Buffer() declarations */ 1070 1071 if (Op->Common.AmlOpcode == AML_BUFFER_OP) 1072 { 1073 /* And only declarations of the form Name (XXXX, Buffer()... ) */ 1074 1075 Parent = Op->Common.Parent; 1076 if (Parent->Common.AmlOpcode == AML_NAME_OP) 1077 { 1078 /* 1079 * If the buffer is a resource template, add the individual 1080 * resource descriptors to the namespace, as children of the 1081 * buffer node. 1082 */ 1083 if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (NULL, Op))) 1084 { 1085 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; 1086 AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op); 1087 } 1088 } 1089 } 1090 1091 Op = AcpiPsGetDepthNext (Root, Op); 1092 } 1093 } 1094 1095 1096 /******************************************************************************* 1097 * 1098 * FUNCTION: AcpiDmAddResourcesToNamespace 1099 * 1100 * PARAMETERS: BufferNode - Node for the parent buffer 1101 * Op - Parse op for the buffer 1102 * 1103 * RETURN: None 1104 * 1105 * DESCRIPTION: Add an entire resource template to the namespace. Each 1106 * resource descriptor is added as a namespace node. 1107 * 1108 ******************************************************************************/ 1109 1110 static void 1111 AcpiDmAddResourcesToNamespace ( 1112 ACPI_NAMESPACE_NODE *BufferNode, 1113 ACPI_PARSE_OBJECT *Op) 1114 { 1115 ACPI_PARSE_OBJECT *NextOp; 1116 1117 1118 /* Get to the ByteData list */ 1119 1120 NextOp = Op->Common.Value.Arg; 1121 NextOp = NextOp->Common.Next; 1122 if (!NextOp) 1123 { 1124 return; 1125 } 1126 1127 /* Set Node and Op to point to each other */ 1128 1129 BufferNode->Op = Op; 1130 Op->Common.Node = BufferNode; 1131 1132 /* 1133 * Insert each resource into the namespace 1134 * NextOp contains the Aml pointer and the Aml length 1135 */ 1136 AcpiUtWalkAmlResources (NULL, (UINT8 *) NextOp->Named.Data, 1137 (ACPI_SIZE) NextOp->Common.Value.Integer, 1138 AcpiDmAddResourceToNamespace, (void **) BufferNode); 1139 } 1140 1141 1142 /******************************************************************************* 1143 * 1144 * FUNCTION: AcpiDmAddResourceToNamespace 1145 * 1146 * PARAMETERS: ACPI_WALK_AML_CALLBACK 1147 * BufferNode - Node for the parent buffer 1148 * 1149 * RETURN: Status 1150 * 1151 * DESCRIPTION: Add one resource descriptor to the namespace as a child of the 1152 * parent buffer. The same name is used for each descriptor. This 1153 * is changed later to a unique name if the resource is actually 1154 * referenced by an AML operator. 1155 * 1156 ******************************************************************************/ 1157 1158 static ACPI_STATUS 1159 AcpiDmAddResourceToNamespace ( 1160 UINT8 *Aml, 1161 UINT32 Length, 1162 UINT32 Offset, 1163 UINT8 ResourceIndex, 1164 void **Context) 1165 { 1166 ACPI_STATUS Status; 1167 ACPI_GENERIC_STATE ScopeInfo; 1168 ACPI_NAMESPACE_NODE *Node; 1169 1170 1171 /* TBD: Don't need to add descriptors that have no tags defined? */ 1172 1173 /* Add the resource to the namespace, as child of the buffer */ 1174 1175 ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context); 1176 Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE, 1177 ACPI_IMODE_LOAD_PASS2, 1178 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE, 1179 NULL, &Node); 1180 if (ACPI_FAILURE (Status)) 1181 { 1182 return (AE_OK); 1183 } 1184 1185 /* Set the name to the default, changed later if resource is referenced */ 1186 1187 Node->Name.Integer = ACPI_DEFAULT_RESNAME; 1188 1189 /* Save the offset of the descriptor (within the original buffer) */ 1190 1191 Node->Value = Offset; 1192 Node->Length = Length; 1193 return (AE_OK); 1194 } 1195