1 2 /****************************************************************************** 3 * 4 * Module Name: exregion - ACPI default OpRegion (address space) handlers 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2009, 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 #define __EXREGION_C__ 119 120 #include "acpi.h" 121 #include "accommon.h" 122 #include "acinterp.h" 123 124 125 #define _COMPONENT ACPI_EXECUTER 126 ACPI_MODULE_NAME ("exregion") 127 128 129 /******************************************************************************* 130 * 131 * FUNCTION: AcpiExSystemMemorySpaceHandler 132 * 133 * PARAMETERS: Function - Read or Write operation 134 * Address - Where in the space to read or write 135 * BitWidth - Field width in bits (8, 16, or 32) 136 * Value - Pointer to in or out value 137 * HandlerContext - Pointer to Handler's context 138 * RegionContext - Pointer to context specific to the 139 * accessed region 140 * 141 * RETURN: Status 142 * 143 * DESCRIPTION: Handler for the System Memory address space (Op Region) 144 * 145 ******************************************************************************/ 146 147 ACPI_STATUS 148 AcpiExSystemMemorySpaceHandler ( 149 UINT32 Function, 150 ACPI_PHYSICAL_ADDRESS Address, 151 UINT32 BitWidth, 152 ACPI_INTEGER *Value, 153 void *HandlerContext, 154 void *RegionContext) 155 { 156 ACPI_STATUS Status = AE_OK; 157 void *LogicalAddrPtr = NULL; 158 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext; 159 UINT32 Length; 160 ACPI_SIZE MapLength; 161 ACPI_SIZE PageBoundaryMapLength; 162 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED 163 UINT32 Remainder; 164 #endif 165 166 167 ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler); 168 169 170 /* Validate and translate the bit width */ 171 172 switch (BitWidth) 173 { 174 case 8: 175 Length = 1; 176 break; 177 178 case 16: 179 Length = 2; 180 break; 181 182 case 32: 183 Length = 4; 184 break; 185 186 case 64: 187 Length = 8; 188 break; 189 190 default: 191 ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %d", 192 BitWidth)); 193 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 194 } 195 196 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED 197 /* 198 * Hardware does not support non-aligned data transfers, we must verify 199 * the request. 200 */ 201 (void) AcpiUtShortDivide ((ACPI_INTEGER) Address, Length, NULL, &Remainder); 202 if (Remainder != 0) 203 { 204 return_ACPI_STATUS (AE_AML_ALIGNMENT); 205 } 206 #endif 207 208 /* 209 * Does the request fit into the cached memory mapping? 210 * Is 1) Address below the current mapping? OR 211 * 2) Address beyond the current mapping? 212 */ 213 if ((Address < MemInfo->MappedPhysicalAddress) || 214 (((ACPI_INTEGER) Address + Length) > 215 ((ACPI_INTEGER) 216 MemInfo->MappedPhysicalAddress + MemInfo->MappedLength))) 217 { 218 /* 219 * The request cannot be resolved by the current memory mapping; 220 * Delete the existing mapping and create a new one. 221 */ 222 if (MemInfo->MappedLength) 223 { 224 /* Valid mapping, delete it */ 225 226 AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress, 227 MemInfo->MappedLength); 228 } 229 230 /* 231 * October 2009: Attempt to map from the requested address to the 232 * end of the region. However, we will never map more than one 233 * page, nor will we cross a page boundary. 234 */ 235 MapLength = (ACPI_SIZE) 236 ((MemInfo->Address + MemInfo->Length) - Address); 237 238 /* 239 * If mapping the entire remaining portion of the region will cross 240 * a page boundary, just map up to the page boundary, do not cross. 241 * On some systems, crossing a page boundary while mapping regions 242 * can cause warnings if the pages have different attributes 243 * due to resource management. 244 * 245 * This has the added benefit of constraining a single mapping to 246 * one page, which is similar to the original code that used a 4k 247 * maximum window. 248 */ 249 PageBoundaryMapLength = 250 ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address; 251 if (PageBoundaryMapLength == 0) 252 { 253 PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE; 254 } 255 256 if (MapLength > PageBoundaryMapLength) 257 { 258 MapLength = PageBoundaryMapLength; 259 } 260 261 /* Create a new mapping starting at the address given */ 262 263 MemInfo->MappedLogicalAddress = AcpiOsMapMemory ( 264 (ACPI_PHYSICAL_ADDRESS) Address, MapLength); 265 if (!MemInfo->MappedLogicalAddress) 266 { 267 ACPI_ERROR ((AE_INFO, 268 "Could not map memory at %8.8X%8.8X, size %X", 269 ACPI_FORMAT_NATIVE_UINT (Address), (UINT32) MapLength)); 270 MemInfo->MappedLength = 0; 271 return_ACPI_STATUS (AE_NO_MEMORY); 272 } 273 274 /* Save the physical address and mapping size */ 275 276 MemInfo->MappedPhysicalAddress = Address; 277 MemInfo->MappedLength = MapLength; 278 } 279 280 /* 281 * Generate a logical pointer corresponding to the address we want to 282 * access 283 */ 284 LogicalAddrPtr = MemInfo->MappedLogicalAddress + 285 ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress); 286 287 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 288 "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n", 289 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address))); 290 291 /* 292 * Perform the memory read or write 293 * 294 * Note: For machines that do not support non-aligned transfers, the target 295 * address was checked for alignment above. We do not attempt to break the 296 * transfer up into smaller (byte-size) chunks because the AML specifically 297 * asked for a transfer width that the hardware may require. 298 */ 299 switch (Function) 300 { 301 case ACPI_READ: 302 303 *Value = 0; 304 switch (BitWidth) 305 { 306 case 8: 307 *Value = (ACPI_INTEGER) ACPI_GET8 (LogicalAddrPtr); 308 break; 309 310 case 16: 311 *Value = (ACPI_INTEGER) ACPI_GET16 (LogicalAddrPtr); 312 break; 313 314 case 32: 315 *Value = (ACPI_INTEGER) ACPI_GET32 (LogicalAddrPtr); 316 break; 317 318 case 64: 319 *Value = (ACPI_INTEGER) ACPI_GET64 (LogicalAddrPtr); 320 break; 321 322 default: 323 /* BitWidth was already validated */ 324 break; 325 } 326 break; 327 328 case ACPI_WRITE: 329 330 switch (BitWidth) 331 { 332 case 8: 333 ACPI_SET8 (LogicalAddrPtr) = (UINT8) *Value; 334 break; 335 336 case 16: 337 ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value; 338 break; 339 340 case 32: 341 ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value; 342 break; 343 344 case 64: 345 ACPI_SET64 (LogicalAddrPtr) = (UINT64) *Value; 346 break; 347 348 default: 349 /* BitWidth was already validated */ 350 break; 351 } 352 break; 353 354 default: 355 Status = AE_BAD_PARAMETER; 356 break; 357 } 358 359 return_ACPI_STATUS (Status); 360 } 361 362 363 /******************************************************************************* 364 * 365 * FUNCTION: AcpiExSystemIoSpaceHandler 366 * 367 * PARAMETERS: Function - Read or Write operation 368 * Address - Where in the space to read or write 369 * BitWidth - Field width in bits (8, 16, or 32) 370 * Value - Pointer to in or out value 371 * HandlerContext - Pointer to Handler's context 372 * RegionContext - Pointer to context specific to the 373 * accessed region 374 * 375 * RETURN: Status 376 * 377 * DESCRIPTION: Handler for the System IO address space (Op Region) 378 * 379 ******************************************************************************/ 380 381 ACPI_STATUS 382 AcpiExSystemIoSpaceHandler ( 383 UINT32 Function, 384 ACPI_PHYSICAL_ADDRESS Address, 385 UINT32 BitWidth, 386 ACPI_INTEGER *Value, 387 void *HandlerContext, 388 void *RegionContext) 389 { 390 ACPI_STATUS Status = AE_OK; 391 UINT32 Value32; 392 393 394 ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler); 395 396 397 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 398 "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n", 399 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address))); 400 401 /* Decode the function parameter */ 402 403 switch (Function) 404 { 405 case ACPI_READ: 406 407 Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address, 408 &Value32, BitWidth); 409 *Value = Value32; 410 break; 411 412 case ACPI_WRITE: 413 414 Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address, 415 (UINT32) *Value, BitWidth); 416 break; 417 418 default: 419 Status = AE_BAD_PARAMETER; 420 break; 421 } 422 423 return_ACPI_STATUS (Status); 424 } 425 426 427 /******************************************************************************* 428 * 429 * FUNCTION: AcpiExPciConfigSpaceHandler 430 * 431 * PARAMETERS: Function - Read or Write operation 432 * Address - Where in the space to read or write 433 * BitWidth - Field width in bits (8, 16, or 32) 434 * Value - Pointer to in or out value 435 * HandlerContext - Pointer to Handler's context 436 * RegionContext - Pointer to context specific to the 437 * accessed region 438 * 439 * RETURN: Status 440 * 441 * DESCRIPTION: Handler for the PCI Config address space (Op Region) 442 * 443 ******************************************************************************/ 444 445 ACPI_STATUS 446 AcpiExPciConfigSpaceHandler ( 447 UINT32 Function, 448 ACPI_PHYSICAL_ADDRESS Address, 449 UINT32 BitWidth, 450 ACPI_INTEGER *Value, 451 void *HandlerContext, 452 void *RegionContext) 453 { 454 ACPI_STATUS Status = AE_OK; 455 ACPI_PCI_ID *PciId; 456 UINT16 PciRegister; 457 458 459 ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler); 460 461 462 /* 463 * The arguments to AcpiOs(Read|Write)PciConfiguration are: 464 * 465 * PciSegment is the PCI bus segment range 0-31 466 * PciBus is the PCI bus number range 0-255 467 * PciDevice is the PCI device number range 0-31 468 * PciFunction is the PCI device function number 469 * PciRegister is the Config space register range 0-255 bytes 470 * 471 * Value - input value for write, output address for read 472 * 473 */ 474 PciId = (ACPI_PCI_ID *) RegionContext; 475 PciRegister = (UINT16) (UINT32) Address; 476 477 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 478 "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", 479 Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, 480 PciId->Function, PciRegister)); 481 482 switch (Function) 483 { 484 case ACPI_READ: 485 486 *Value = 0; 487 Status = AcpiOsReadPciConfiguration (PciId, PciRegister, 488 Value, BitWidth); 489 break; 490 491 case ACPI_WRITE: 492 493 Status = AcpiOsWritePciConfiguration (PciId, PciRegister, 494 *Value, BitWidth); 495 break; 496 497 default: 498 499 Status = AE_BAD_PARAMETER; 500 break; 501 } 502 503 return_ACPI_STATUS (Status); 504 } 505 506 507 /******************************************************************************* 508 * 509 * FUNCTION: AcpiExCmosSpaceHandler 510 * 511 * PARAMETERS: Function - Read or Write operation 512 * Address - Where in the space to read or write 513 * BitWidth - Field width in bits (8, 16, or 32) 514 * Value - Pointer to in or out value 515 * HandlerContext - Pointer to Handler's context 516 * RegionContext - Pointer to context specific to the 517 * accessed region 518 * 519 * RETURN: Status 520 * 521 * DESCRIPTION: Handler for the CMOS address space (Op Region) 522 * 523 ******************************************************************************/ 524 525 ACPI_STATUS 526 AcpiExCmosSpaceHandler ( 527 UINT32 Function, 528 ACPI_PHYSICAL_ADDRESS Address, 529 UINT32 BitWidth, 530 ACPI_INTEGER *Value, 531 void *HandlerContext, 532 void *RegionContext) 533 { 534 ACPI_STATUS Status = AE_OK; 535 536 537 ACPI_FUNCTION_TRACE (ExCmosSpaceHandler); 538 539 540 return_ACPI_STATUS (Status); 541 } 542 543 544 /******************************************************************************* 545 * 546 * FUNCTION: AcpiExPciBarSpaceHandler 547 * 548 * PARAMETERS: Function - Read or Write operation 549 * Address - Where in the space to read or write 550 * BitWidth - Field width in bits (8, 16, or 32) 551 * Value - Pointer to in or out value 552 * HandlerContext - Pointer to Handler's context 553 * RegionContext - Pointer to context specific to the 554 * accessed region 555 * 556 * RETURN: Status 557 * 558 * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region) 559 * 560 ******************************************************************************/ 561 562 ACPI_STATUS 563 AcpiExPciBarSpaceHandler ( 564 UINT32 Function, 565 ACPI_PHYSICAL_ADDRESS Address, 566 UINT32 BitWidth, 567 ACPI_INTEGER *Value, 568 void *HandlerContext, 569 void *RegionContext) 570 { 571 ACPI_STATUS Status = AE_OK; 572 573 574 ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler); 575 576 577 return_ACPI_STATUS (Status); 578 } 579 580 581 /******************************************************************************* 582 * 583 * FUNCTION: AcpiExDataTableSpaceHandler 584 * 585 * PARAMETERS: Function - Read or Write operation 586 * Address - Where in the space to read or write 587 * BitWidth - Field width in bits (8, 16, or 32) 588 * Value - Pointer to in or out value 589 * HandlerContext - Pointer to Handler's context 590 * RegionContext - Pointer to context specific to the 591 * accessed region 592 * 593 * RETURN: Status 594 * 595 * DESCRIPTION: Handler for the Data Table address space (Op Region) 596 * 597 ******************************************************************************/ 598 599 ACPI_STATUS 600 AcpiExDataTableSpaceHandler ( 601 UINT32 Function, 602 ACPI_PHYSICAL_ADDRESS Address, 603 UINT32 BitWidth, 604 ACPI_INTEGER *Value, 605 void *HandlerContext, 606 void *RegionContext) 607 { 608 ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler); 609 610 611 /* Perform the memory read or write */ 612 613 switch (Function) 614 { 615 case ACPI_READ: 616 617 ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address), 618 ACPI_DIV_8 (BitWidth)); 619 break; 620 621 case ACPI_WRITE: 622 default: 623 624 return_ACPI_STATUS (AE_SUPPORT); 625 } 626 627 return_ACPI_STATUS (AE_OK); 628 } 629 630 631