1 /****************************************************************************** 2 * 3 * Module Name: dtsubtable.c - handling of subtables within ACPI tables 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2025, 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 "aslcompiler.h" 153 154 #define _COMPONENT DT_COMPILER 155 ACPI_MODULE_NAME ("dtsubtable") 156 157 158 /****************************************************************************** 159 * 160 * FUNCTION: DtCreateSubtable 161 * 162 * PARAMETERS: Buffer - Input buffer 163 * Length - Buffer length 164 * RetSubtable - Returned newly created subtable 165 * 166 * RETURN: None 167 * 168 * DESCRIPTION: Create a subtable that is not listed with ACPI_DMTABLE_INFO 169 * For example, FACS has 24 bytes reserved at the end 170 * and it's not listed at AcpiDmTableInfoFacs 171 * 172 *****************************************************************************/ 173 174 void 175 DtCreateSubtable ( 176 UINT8 *Buffer, 177 UINT32 Length, 178 DT_SUBTABLE **RetSubtable) 179 { 180 DT_SUBTABLE *Subtable; 181 char *String; 182 183 184 Subtable = UtSubtableCacheCalloc (); 185 186 /* Create a new buffer for the subtable data */ 187 188 String = UtLocalCacheCalloc (Length); 189 Subtable->Buffer = ACPI_CAST_PTR (UINT8, String); 190 memcpy (Subtable->Buffer, Buffer, Length); 191 192 Subtable->Length = Length; 193 Subtable->TotalLength = Length; 194 195 *RetSubtable = Subtable; 196 } 197 198 199 /****************************************************************************** 200 * 201 * FUNCTION: DtInsertSubtable 202 * 203 * PARAMETERS: ParentTable - The Parent of the new subtable 204 * Subtable - The new subtable to insert 205 * 206 * RETURN: None 207 * 208 * DESCRIPTION: Insert the new subtable to the parent table 209 * 210 *****************************************************************************/ 211 212 void 213 DtInsertSubtable ( 214 DT_SUBTABLE *ParentTable, 215 DT_SUBTABLE *Subtable) 216 { 217 DT_SUBTABLE *ChildTable; 218 219 220 Subtable->Peer = NULL; 221 Subtable->Parent = ParentTable; 222 Subtable->Depth = ParentTable->Depth + 1; 223 224 /* Link the new entry into the child list */ 225 226 if (!ParentTable->Child) 227 { 228 ParentTable->Child = Subtable; 229 } 230 else 231 { 232 /* Walk to the end of the child list */ 233 234 ChildTable = ParentTable->Child; 235 while (ChildTable->Peer) 236 { 237 ChildTable = ChildTable->Peer; 238 } 239 240 /* Add new subtable at the end of the child list */ 241 242 ChildTable->Peer = Subtable; 243 } 244 } 245 246 247 /****************************************************************************** 248 * 249 * FUNCTION: DtPushSubtable 250 * 251 * PARAMETERS: Subtable - Subtable to push 252 * 253 * RETURN: None 254 * 255 * DESCRIPTION: Push a subtable onto a subtable stack 256 * 257 *****************************************************************************/ 258 259 void 260 DtPushSubtable ( 261 DT_SUBTABLE *Subtable) 262 { 263 264 Subtable->StackTop = AslGbl_SubtableStack; 265 AslGbl_SubtableStack = Subtable; 266 } 267 268 269 /****************************************************************************** 270 * 271 * FUNCTION: DtPopSubtable 272 * 273 * PARAMETERS: None 274 * 275 * RETURN: None 276 * 277 * DESCRIPTION: Pop a subtable from a subtable stack. Uses global SubtableStack 278 * 279 *****************************************************************************/ 280 281 void 282 DtPopSubtable ( 283 void) 284 { 285 DT_SUBTABLE *Subtable; 286 287 288 Subtable = AslGbl_SubtableStack; 289 290 if (Subtable) 291 { 292 AslGbl_SubtableStack = Subtable->StackTop; 293 } 294 } 295 296 297 /****************************************************************************** 298 * 299 * FUNCTION: DtPeekSubtable 300 * 301 * PARAMETERS: None 302 * 303 * RETURN: The subtable on top of stack 304 * 305 * DESCRIPTION: Get the subtable on top of stack 306 * 307 *****************************************************************************/ 308 309 DT_SUBTABLE * 310 DtPeekSubtable ( 311 void) 312 { 313 314 return (AslGbl_SubtableStack); 315 } 316 317 318 /****************************************************************************** 319 * 320 * FUNCTION: DtGetNextSubtable 321 * 322 * PARAMETERS: ParentTable - Parent table whose children we are 323 * getting 324 * ChildTable - Previous child that was found. 325 * The NEXT child will be returned 326 * 327 * RETURN: Pointer to the NEXT child or NULL if none is found. 328 * 329 * DESCRIPTION: Return the next peer subtable within the tree. 330 * 331 *****************************************************************************/ 332 333 DT_SUBTABLE * 334 DtGetNextSubtable ( 335 DT_SUBTABLE *ParentTable, 336 DT_SUBTABLE *ChildTable) 337 { 338 ACPI_FUNCTION_ENTRY (); 339 340 341 if (!ChildTable) 342 { 343 /* It's really the parent's _scope_ that we want */ 344 345 return (ParentTable->Child); 346 } 347 348 /* Otherwise just return the next peer (NULL if at end-of-list) */ 349 350 return (ChildTable->Peer); 351 } 352 353 354 /****************************************************************************** 355 * 356 * FUNCTION: DtGetParentSubtable 357 * 358 * PARAMETERS: Subtable - Current subtable 359 * 360 * RETURN: Parent of the given subtable 361 * 362 * DESCRIPTION: Get the parent of the given subtable in the tree 363 * 364 *****************************************************************************/ 365 366 DT_SUBTABLE * 367 DtGetParentSubtable ( 368 DT_SUBTABLE *Subtable) 369 { 370 371 if (!Subtable) 372 { 373 return (NULL); 374 } 375 376 return (Subtable->Parent); 377 } 378 379 380 /****************************************************************************** 381 * 382 * FUNCTION: DtGetSubtableLength 383 * 384 * PARAMETERS: Field - Current field list pointer 385 * Info - Data table info 386 * 387 * RETURN: Subtable length 388 * 389 * DESCRIPTION: Get length of bytes needed to compile the subtable 390 * 391 *****************************************************************************/ 392 393 UINT32 394 DtGetSubtableLength ( 395 DT_FIELD *Field, 396 ACPI_DMTABLE_INFO *Info) 397 { 398 UINT32 ByteLength = 0; 399 UINT8 Step; 400 UINT8 i; 401 402 403 /* Walk entire Info table; Null name terminates */ 404 405 for (; Info->Name; Info++) 406 { 407 if (Info->Opcode == ACPI_DMT_EXTRA_TEXT) 408 { 409 continue; 410 } 411 412 if (!Field) 413 { 414 goto Error; 415 } 416 417 ByteLength += DtGetFieldLength (Field, Info); 418 419 switch (Info->Opcode) 420 { 421 case ACPI_DMT_GAS: 422 423 Step = 5; 424 break; 425 426 case ACPI_DMT_HESTNTFY: 427 428 Step = 9; 429 break; 430 431 case ACPI_DMT_IORTMEM: 432 433 Step = 10; 434 break; 435 436 default: 437 438 Step = 1; 439 break; 440 } 441 442 for (i = 0; i < Step; i++) 443 { 444 if (!Field) 445 { 446 goto Error; 447 } 448 449 Field = Field->Next; 450 } 451 } 452 453 return (ByteLength); 454 455 Error: 456 if (!Field) 457 { 458 snprintf (AslGbl_MsgBuffer, sizeof(AslGbl_MsgBuffer), "Found NULL field - Field name \"%s\" needed", 459 Info->Name); 460 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, AslGbl_MsgBuffer); 461 } 462 463 return (ASL_EOF); 464 } 465 466 467 /****************************************************************************** 468 * 469 * FUNCTION: DtSetSubtableLength 470 * 471 * PARAMETERS: Subtable - Subtable 472 * 473 * RETURN: None 474 * 475 * DESCRIPTION: Set length of the subtable into its length field 476 * 477 *****************************************************************************/ 478 479 void 480 DtSetSubtableLength ( 481 DT_SUBTABLE *Subtable) 482 { 483 484 if (!Subtable->LengthField) 485 { 486 return; 487 } 488 489 memcpy (Subtable->LengthField, &Subtable->TotalLength, 490 Subtable->SizeOfLengthField); 491 } 492
Indexes created Sun Sep 21 20:09:37 GMT 2025