1 /****************************************************************************** 2 * 3 * Module Name: exregion - ACPI default OpRegion (address space) handlers 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 "acpi.h" 153 #include "accommon.h" 154 #include "acinterp.h" 155 156 157 #define _COMPONENT ACPI_EXECUTER 158 ACPI_MODULE_NAME ("exregion") 159 160 161 /******************************************************************************* 162 * 163 * FUNCTION: AcpiExSystemMemorySpaceHandler 164 * 165 * PARAMETERS: Function - Read or Write operation 166 * Address - Where in the space to read or write 167 * BitWidth - Field width in bits (8, 16, or 32) 168 * Value - Pointer to in or out value 169 * HandlerContext - Pointer to Handler's context 170 * RegionContext - Pointer to context specific to the 171 * accessed region 172 * 173 * RETURN: Status 174 * 175 * DESCRIPTION: Handler for the System Memory address space (Op Region) 176 * 177 ******************************************************************************/ 178 179 ACPI_STATUS 180 AcpiExSystemMemorySpaceHandler ( 181 UINT32 Function, 182 ACPI_PHYSICAL_ADDRESS Address, 183 UINT32 BitWidth, 184 UINT64 *Value, 185 void *HandlerContext, 186 void *RegionContext) 187 { 188 ACPI_STATUS Status = AE_OK; 189 void *LogicalAddrPtr = NULL; 190 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext; 191 ACPI_MEM_MAPPING *Mm = MemInfo->CurMm; 192 UINT32 Length; 193 ACPI_SIZE MapLength; 194 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED 195 UINT32 Remainder; 196 #endif 197 198 199 ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler); 200 201 202 /* Validate and translate the bit width */ 203 204 switch (BitWidth) 205 { 206 case 8: 207 208 Length = 1; 209 break; 210 211 case 16: 212 213 Length = 2; 214 break; 215 216 case 32: 217 218 Length = 4; 219 break; 220 221 case 64: 222 223 Length = 8; 224 break; 225 226 default: 227 228 ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u", 229 BitWidth)); 230 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 231 } 232 233 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED 234 /* 235 * Hardware does not support non-aligned data transfers, we must verify 236 * the request. 237 */ 238 (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder); 239 if (Remainder != 0) 240 { 241 return_ACPI_STATUS (AE_AML_ALIGNMENT); 242 } 243 #endif 244 245 /* 246 * Does the request fit into the cached memory mapping? 247 * Is 1) Address below the current mapping? OR 248 * 2) Address beyond the current mapping? 249 */ 250 if (!Mm || (Address < Mm->PhysicalAddress) || 251 ((UINT64) Address + Length > (UINT64) Mm->PhysicalAddress + Mm->Length)) 252 { 253 /* 254 * The request cannot be resolved by the current memory mapping. 255 * 256 * Look for an existing saved mapping covering the address range 257 * at hand. If found, save it as the current one and carry out 258 * the access. 259 */ 260 for (Mm = MemInfo->FirstMm; Mm; Mm = Mm->NextMm) 261 { 262 if (Mm == MemInfo->CurMm) 263 { 264 continue; 265 } 266 267 if (Address < Mm->PhysicalAddress) 268 { 269 continue; 270 } 271 272 if ((UINT64) Address + Length > (UINT64) Mm->PhysicalAddress + Mm->Length) 273 { 274 continue; 275 } 276 277 MemInfo->CurMm = Mm; 278 goto access; 279 } 280 281 /* Create a new mappings list entry */ 282 283 Mm = ACPI_ALLOCATE_ZEROED(sizeof(*Mm)); 284 if (!Mm) 285 { 286 ACPI_ERROR((AE_INFO, 287 "Unable to save memory mapping at 0x%8.8X%8.8X, size %u", 288 ACPI_FORMAT_UINT64(Address), Length)); 289 return_ACPI_STATUS(AE_NO_MEMORY); 290 } 291 292 /* 293 * October 2009: Attempt to map from the requested address to the 294 * end of the region. However, we will never map more than one 295 * page, nor will we cross a page boundary. 296 */ 297 MapLength = (ACPI_SIZE) 298 ((MemInfo->Address + MemInfo->Length) - Address); 299 300 if (MapLength > ACPI_DEFAULT_PAGE_SIZE) 301 { 302 MapLength = ACPI_DEFAULT_PAGE_SIZE; 303 } 304 305 /* Create a new mapping starting at the address given */ 306 307 LogicalAddrPtr = AcpiOsMapMemory(Address, MapLength); 308 if (!LogicalAddrPtr) 309 { 310 ACPI_ERROR ((AE_INFO, 311 "Could not map memory at 0x%8.8X%8.8X, size %u", 312 ACPI_FORMAT_UINT64 (Address), (UINT32) MapLength)); 313 ACPI_FREE(Mm); 314 return_ACPI_STATUS (AE_NO_MEMORY); 315 } 316 317 /* Save the physical address and mapping size */ 318 319 Mm->LogicalAddress = LogicalAddrPtr; 320 Mm->PhysicalAddress = Address; 321 Mm->Length = MapLength; 322 323 /* 324 * Add the new entry to the mappigs list and save it as the 325 * current mapping. 326 */ 327 Mm->NextMm = MemInfo->FirstMm; 328 MemInfo->FirstMm = Mm; 329 MemInfo->CurMm = Mm; 330 } 331 332 access: 333 /* 334 * Generate a logical pointer corresponding to the address we want to 335 * access 336 */ 337 LogicalAddrPtr = Mm->LogicalAddress + 338 ((UINT64) Address - (UINT64) Mm->PhysicalAddress); 339 340 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 341 "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", 342 BitWidth, Function, ACPI_FORMAT_UINT64 (Address))); 343 344 /* 345 * Perform the memory read or write 346 * 347 * Note: For machines that do not support non-aligned transfers, the target 348 * address was checked for alignment above. We do not attempt to break the 349 * transfer up into smaller (byte-size) chunks because the AML specifically 350 * asked for a transfer width that the hardware may require. 351 */ 352 switch (Function) 353 { 354 case ACPI_READ: 355 356 *Value = 0; 357 switch (BitWidth) 358 { 359 case 8: 360 361 *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr); 362 break; 363 364 case 16: 365 366 *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr); 367 break; 368 369 case 32: 370 371 *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr); 372 break; 373 374 case 64: 375 376 *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr); 377 break; 378 379 default: 380 381 /* BitWidth was already validated */ 382 383 break; 384 } 385 break; 386 387 case ACPI_WRITE: 388 389 switch (BitWidth) 390 { 391 case 8: 392 393 ACPI_SET8 (LogicalAddrPtr, *Value); 394 break; 395 396 case 16: 397 398 ACPI_SET16 (LogicalAddrPtr, *Value); 399 break; 400 401 case 32: 402 403 ACPI_SET32 (LogicalAddrPtr, *Value); 404 break; 405 406 case 64: 407 408 ACPI_SET64 (LogicalAddrPtr, *Value); 409 break; 410 411 default: 412 413 /* BitWidth was already validated */ 414 415 break; 416 } 417 break; 418 419 default: 420 421 Status = AE_BAD_PARAMETER; 422 break; 423 } 424 425 return_ACPI_STATUS (Status); 426 } 427 428 429 /******************************************************************************* 430 * 431 * FUNCTION: AcpiExSystemIoSpaceHandler 432 * 433 * PARAMETERS: Function - Read or Write operation 434 * Address - Where in the space to read or write 435 * BitWidth - Field width in bits (8, 16, or 32) 436 * Value - Pointer to in or out value 437 * HandlerContext - Pointer to Handler's context 438 * RegionContext - Pointer to context specific to the 439 * accessed region 440 * 441 * RETURN: Status 442 * 443 * DESCRIPTION: Handler for the System IO address space (Op Region) 444 * 445 ******************************************************************************/ 446 447 ACPI_STATUS 448 AcpiExSystemIoSpaceHandler ( 449 UINT32 Function, 450 ACPI_PHYSICAL_ADDRESS Address, 451 UINT32 BitWidth, 452 UINT64 *Value, 453 void *HandlerContext, 454 void *RegionContext) 455 { 456 ACPI_STATUS Status = AE_OK; 457 UINT32 Value32; 458 459 460 ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler); 461 462 463 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 464 "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", 465 BitWidth, Function, ACPI_FORMAT_UINT64 (Address))); 466 467 /* Decode the function parameter */ 468 469 switch (Function) 470 { 471 case ACPI_READ: 472 473 Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address, 474 &Value32, BitWidth); 475 *Value = Value32; 476 break; 477 478 case ACPI_WRITE: 479 480 Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address, 481 (UINT32) *Value, BitWidth); 482 break; 483 484 default: 485 486 Status = AE_BAD_PARAMETER; 487 break; 488 } 489 490 return_ACPI_STATUS (Status); 491 } 492 493 494 /******************************************************************************* 495 * 496 * FUNCTION: AcpiExPciConfigSpaceHandler 497 * 498 * PARAMETERS: Function - Read or Write operation 499 * Address - Where in the space to read or write 500 * BitWidth - Field width in bits (8, 16, or 32) 501 * Value - Pointer to in or out value 502 * HandlerContext - Pointer to Handler's context 503 * RegionContext - Pointer to context specific to the 504 * accessed region 505 * 506 * RETURN: Status 507 * 508 * DESCRIPTION: Handler for the PCI Config address space (Op Region) 509 * 510 ******************************************************************************/ 511 512 ACPI_STATUS 513 AcpiExPciConfigSpaceHandler ( 514 UINT32 Function, 515 ACPI_PHYSICAL_ADDRESS Address, 516 UINT32 BitWidth, 517 UINT64 *Value, 518 void *HandlerContext, 519 void *RegionContext) 520 { 521 ACPI_STATUS Status = AE_OK; 522 ACPI_PCI_ID *PciId; 523 UINT16 PciRegister; 524 525 526 ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler); 527 528 529 /* 530 * The arguments to AcpiOs(Read|Write)PciConfiguration are: 531 * 532 * PciSegment is the PCI bus segment range 0-31 533 * PciBus is the PCI bus number range 0-255 534 * PciDevice is the PCI device number range 0-31 535 * PciFunction is the PCI device function number 536 * PciRegister is the Config space register range 0-255 bytes 537 * 538 * Value - input value for write, output address for read 539 * 540 */ 541 PciId = (ACPI_PCI_ID *) RegionContext; 542 PciRegister = (UINT16) (UINT32) Address; 543 544 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 545 "Pci-Config %u (%u) Seg(%04x) Bus(%04x) " 546 "Dev(%04x) Func(%04x) Reg(%04x)\n", 547 Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, 548 PciId->Function, PciRegister)); 549 550 switch (Function) 551 { 552 case ACPI_READ: 553 554 *Value = 0; 555 Status = AcpiOsReadPciConfiguration ( 556 PciId, PciRegister, Value, BitWidth); 557 break; 558 559 case ACPI_WRITE: 560 561 Status = AcpiOsWritePciConfiguration ( 562 PciId, PciRegister, *Value, BitWidth); 563 break; 564 565 default: 566 567 Status = AE_BAD_PARAMETER; 568 break; 569 } 570 571 return_ACPI_STATUS (Status); 572 } 573 574 575 /******************************************************************************* 576 * 577 * FUNCTION: AcpiExCmosSpaceHandler 578 * 579 * PARAMETERS: Function - Read or Write operation 580 * Address - Where in the space to read or write 581 * BitWidth - Field width in bits (8, 16, or 32) 582 * Value - Pointer to in or out value 583 * HandlerContext - Pointer to Handler's context 584 * RegionContext - Pointer to context specific to the 585 * accessed region 586 * 587 * RETURN: Status 588 * 589 * DESCRIPTION: Handler for the CMOS address space (Op Region) 590 * 591 ******************************************************************************/ 592 593 ACPI_STATUS 594 AcpiExCmosSpaceHandler ( 595 UINT32 Function, 596 ACPI_PHYSICAL_ADDRESS Address, 597 UINT32 BitWidth, 598 UINT64 *Value, 599 void *HandlerContext, 600 void *RegionContext) 601 { 602 ACPI_STATUS Status = AE_OK; 603 604 605 ACPI_FUNCTION_TRACE (ExCmosSpaceHandler); 606 607 608 return_ACPI_STATUS (Status); 609 } 610 611 612 /******************************************************************************* 613 * 614 * FUNCTION: AcpiExPciBarSpaceHandler 615 * 616 * PARAMETERS: Function - Read or Write operation 617 * Address - Where in the space to read or write 618 * BitWidth - Field width in bits (8, 16, or 32) 619 * Value - Pointer to in or out value 620 * HandlerContext - Pointer to Handler's context 621 * RegionContext - Pointer to context specific to the 622 * accessed region 623 * 624 * RETURN: Status 625 * 626 * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region) 627 * 628 ******************************************************************************/ 629 630 ACPI_STATUS 631 AcpiExPciBarSpaceHandler ( 632 UINT32 Function, 633 ACPI_PHYSICAL_ADDRESS Address, 634 UINT32 BitWidth, 635 UINT64 *Value, 636 void *HandlerContext, 637 void *RegionContext) 638 { 639 ACPI_STATUS Status = AE_OK; 640 641 642 ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler); 643 644 645 return_ACPI_STATUS (Status); 646 } 647 648 649 /******************************************************************************* 650 * 651 * FUNCTION: AcpiExDataTableSpaceHandler 652 * 653 * PARAMETERS: Function - Read or Write operation 654 * Address - Where in the space to read or write 655 * BitWidth - Field width in bits (8, 16, or 32) 656 * Value - Pointer to in or out value 657 * HandlerContext - Pointer to Handler's context 658 * RegionContext - Pointer to context specific to the 659 * accessed region 660 * 661 * RETURN: Status 662 * 663 * DESCRIPTION: Handler for the Data Table address space (Op Region) 664 * 665 ******************************************************************************/ 666 667 ACPI_STATUS 668 AcpiExDataTableSpaceHandler ( 669 UINT32 Function, 670 ACPI_PHYSICAL_ADDRESS Address, 671 UINT32 BitWidth, 672 UINT64 *Value, 673 void *HandlerContext, 674 void *RegionContext) 675 { 676 ACPI_DATA_TABLE_MAPPING *Mapping; 677 char *Pointer; 678 679 680 ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler); 681 682 683 Mapping = (ACPI_DATA_TABLE_MAPPING *) RegionContext; 684 Pointer = ACPI_CAST_PTR (char, Mapping->Pointer) + 685 (Address - ACPI_PTR_TO_PHYSADDR (Mapping->Pointer)); 686 687 /* 688 * Perform the memory read or write. The BitWidth was already 689 * validated. 690 */ 691 switch (Function) 692 { 693 case ACPI_READ: 694 695 memcpy (ACPI_CAST_PTR (char, Value), Pointer, ACPI_DIV_8 (BitWidth)); 696 break; 697 698 case ACPI_WRITE: 699 700 memcpy (Pointer, ACPI_CAST_PTR (char, Value), ACPI_DIV_8 (BitWidth)); 701 break; 702 703 default: 704 705 return_ACPI_STATUS (AE_BAD_PARAMETER); 706 } 707 708 return_ACPI_STATUS (AE_OK); 709 } 710
Indexes created Mon Sep 22 13:09:51 GMT 2025