| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: exregion - ACPI default OpRegion (address space) handlers |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acinterp.h" |
| 47 | |
| 48 | |
| 49 | #define _COMPONENT ACPI_EXECUTER |
| 50 | ACPI_MODULE_NAME ("exregion" ) |
| 51 | |
| 52 | |
| 53 | /******************************************************************************* |
| 54 | * |
| 55 | * FUNCTION: AcpiExSystemMemorySpaceHandler |
| 56 | * |
| 57 | * PARAMETERS: Function - Read or Write operation |
| 58 | * Address - Where in the space to read or write |
| 59 | * BitWidth - Field width in bits (8, 16, or 32) |
| 60 | * Value - Pointer to in or out value |
| 61 | * HandlerContext - Pointer to Handler's context |
| 62 | * RegionContext - Pointer to context specific to the |
| 63 | * accessed region |
| 64 | * |
| 65 | * RETURN: Status |
| 66 | * |
| 67 | * DESCRIPTION: Handler for the System Memory address space (Op Region) |
| 68 | * |
| 69 | ******************************************************************************/ |
| 70 | |
| 71 | ACPI_STATUS |
| 72 | AcpiExSystemMemorySpaceHandler ( |
| 73 | UINT32 Function, |
| 74 | ACPI_PHYSICAL_ADDRESS Address, |
| 75 | UINT32 BitWidth, |
| 76 | UINT64 *Value, |
| 77 | void *HandlerContext, |
| 78 | void *RegionContext) |
| 79 | { |
| 80 | ACPI_STATUS Status = AE_OK; |
| 81 | void *LogicalAddrPtr = NULL; |
| 82 | ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext; |
| 83 | UINT32 Length; |
| 84 | ACPI_SIZE MapLength; |
| 85 | ACPI_SIZE PageBoundaryMapLength; |
| 86 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
| 87 | UINT32 Remainder; |
| 88 | #endif |
| 89 | |
| 90 | |
| 91 | ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler); |
| 92 | |
| 93 | |
| 94 | /* Validate and translate the bit width */ |
| 95 | |
| 96 | switch (BitWidth) |
| 97 | { |
| 98 | case 8: |
| 99 | |
| 100 | Length = 1; |
| 101 | break; |
| 102 | |
| 103 | case 16: |
| 104 | |
| 105 | Length = 2; |
| 106 | break; |
| 107 | |
| 108 | case 32: |
| 109 | |
| 110 | Length = 4; |
| 111 | break; |
| 112 | |
| 113 | case 64: |
| 114 | |
| 115 | Length = 8; |
| 116 | break; |
| 117 | |
| 118 | default: |
| 119 | |
| 120 | ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u" , |
| 121 | BitWidth)); |
| 122 | return_ACPI_STATUS (AE_AML_OPERAND_VALUE); |
| 123 | } |
| 124 | |
| 125 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
| 126 | /* |
| 127 | * Hardware does not support non-aligned data transfers, we must verify |
| 128 | * the request. |
| 129 | */ |
| 130 | (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder); |
| 131 | if (Remainder != 0) |
| 132 | { |
| 133 | return_ACPI_STATUS (AE_AML_ALIGNMENT); |
| 134 | } |
| 135 | #endif |
| 136 | |
| 137 | /* |
| 138 | * Does the request fit into the cached memory mapping? |
| 139 | * Is 1) Address below the current mapping? OR |
| 140 | * 2) Address beyond the current mapping? |
| 141 | */ |
| 142 | if ((Address < MemInfo->MappedPhysicalAddress) || |
| 143 | (((UINT64) Address + Length) > |
| 144 | ((UINT64) |
| 145 | MemInfo->MappedPhysicalAddress + MemInfo->MappedLength))) |
| 146 | { |
| 147 | /* |
| 148 | * The request cannot be resolved by the current memory mapping; |
| 149 | * Delete the existing mapping and create a new one. |
| 150 | */ |
| 151 | if (MemInfo->MappedLength) |
| 152 | { |
| 153 | /* Valid mapping, delete it */ |
| 154 | |
| 155 | AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress, |
| 156 | MemInfo->MappedLength); |
| 157 | } |
| 158 | |
| 159 | /* |
| 160 | * October 2009: Attempt to map from the requested address to the |
| 161 | * end of the region. However, we will never map more than one |
| 162 | * page, nor will we cross a page boundary. |
| 163 | */ |
| 164 | MapLength = (ACPI_SIZE) |
| 165 | ((MemInfo->Address + MemInfo->Length) - Address); |
| 166 | |
| 167 | /* |
| 168 | * If mapping the entire remaining portion of the region will cross |
| 169 | * a page boundary, just map up to the page boundary, do not cross. |
| 170 | * On some systems, crossing a page boundary while mapping regions |
| 171 | * can cause warnings if the pages have different attributes |
| 172 | * due to resource management. |
| 173 | * |
| 174 | * This has the added benefit of constraining a single mapping to |
| 175 | * one page, which is similar to the original code that used a 4k |
| 176 | * maximum window. |
| 177 | */ |
| 178 | PageBoundaryMapLength = (ACPI_SIZE) |
| 179 | (ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address); |
| 180 | if (PageBoundaryMapLength == 0) |
| 181 | { |
| 182 | PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE; |
| 183 | } |
| 184 | |
| 185 | if (MapLength > PageBoundaryMapLength) |
| 186 | { |
| 187 | MapLength = PageBoundaryMapLength; |
| 188 | } |
| 189 | |
| 190 | /* Create a new mapping starting at the address given */ |
| 191 | |
| 192 | MemInfo->MappedLogicalAddress = AcpiOsMapMemory (Address, MapLength); |
| 193 | if (!MemInfo->MappedLogicalAddress) |
| 194 | { |
| 195 | ACPI_ERROR ((AE_INFO, |
| 196 | "Could not map memory at 0x%8.8X%8.8X, size %u" , |
| 197 | ACPI_FORMAT_UINT64 (Address), (UINT32) MapLength)); |
| 198 | MemInfo->MappedLength = 0; |
| 199 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 200 | } |
| 201 | |
| 202 | /* Save the physical address and mapping size */ |
| 203 | |
| 204 | MemInfo->MappedPhysicalAddress = Address; |
| 205 | MemInfo->MappedLength = MapLength; |
| 206 | } |
| 207 | |
| 208 | /* |
| 209 | * Generate a logical pointer corresponding to the address we want to |
| 210 | * access |
| 211 | */ |
| 212 | LogicalAddrPtr = MemInfo->MappedLogicalAddress + |
| 213 | ((UINT64) Address - (UINT64) MemInfo->MappedPhysicalAddress); |
| 214 | |
| 215 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| 216 | "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n" , |
| 217 | BitWidth, Function, ACPI_FORMAT_UINT64 (Address))); |
| 218 | |
| 219 | /* |
| 220 | * Perform the memory read or write |
| 221 | * |
| 222 | * Note: For machines that do not support non-aligned transfers, the target |
| 223 | * address was checked for alignment above. We do not attempt to break the |
| 224 | * transfer up into smaller (byte-size) chunks because the AML specifically |
| 225 | * asked for a transfer width that the hardware may require. |
| 226 | */ |
| 227 | switch (Function) |
| 228 | { |
| 229 | case ACPI_READ: |
| 230 | |
| 231 | *Value = 0; |
| 232 | switch (BitWidth) |
| 233 | { |
| 234 | case 8: |
| 235 | |
| 236 | *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr); |
| 237 | break; |
| 238 | |
| 239 | case 16: |
| 240 | |
| 241 | *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr); |
| 242 | break; |
| 243 | |
| 244 | case 32: |
| 245 | |
| 246 | *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr); |
| 247 | break; |
| 248 | |
| 249 | case 64: |
| 250 | |
| 251 | *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr); |
| 252 | break; |
| 253 | |
| 254 | default: |
| 255 | |
| 256 | /* BitWidth was already validated */ |
| 257 | |
| 258 | break; |
| 259 | } |
| 260 | break; |
| 261 | |
| 262 | case ACPI_WRITE: |
| 263 | |
| 264 | switch (BitWidth) |
| 265 | { |
| 266 | case 8: |
| 267 | |
| 268 | ACPI_SET8 (LogicalAddrPtr, *Value); |
| 269 | break; |
| 270 | |
| 271 | case 16: |
| 272 | |
| 273 | ACPI_SET16 (LogicalAddrPtr, *Value); |
| 274 | break; |
| 275 | |
| 276 | case 32: |
| 277 | |
| 278 | ACPI_SET32 (LogicalAddrPtr, *Value); |
| 279 | break; |
| 280 | |
| 281 | case 64: |
| 282 | |
| 283 | ACPI_SET64 (LogicalAddrPtr, *Value); |
| 284 | break; |
| 285 | |
| 286 | default: |
| 287 | |
| 288 | /* BitWidth was already validated */ |
| 289 | |
| 290 | break; |
| 291 | } |
| 292 | break; |
| 293 | |
| 294 | default: |
| 295 | |
| 296 | Status = AE_BAD_PARAMETER; |
| 297 | break; |
| 298 | } |
| 299 | |
| 300 | return_ACPI_STATUS (Status); |
| 301 | } |
| 302 | |
| 303 | |
| 304 | /******************************************************************************* |
| 305 | * |
| 306 | * FUNCTION: AcpiExSystemIoSpaceHandler |
| 307 | * |
| 308 | * PARAMETERS: Function - Read or Write operation |
| 309 | * Address - Where in the space to read or write |
| 310 | * BitWidth - Field width in bits (8, 16, or 32) |
| 311 | * Value - Pointer to in or out value |
| 312 | * HandlerContext - Pointer to Handler's context |
| 313 | * RegionContext - Pointer to context specific to the |
| 314 | * accessed region |
| 315 | * |
| 316 | * RETURN: Status |
| 317 | * |
| 318 | * DESCRIPTION: Handler for the System IO address space (Op Region) |
| 319 | * |
| 320 | ******************************************************************************/ |
| 321 | |
| 322 | ACPI_STATUS |
| 323 | AcpiExSystemIoSpaceHandler ( |
| 324 | UINT32 Function, |
| 325 | ACPI_PHYSICAL_ADDRESS Address, |
| 326 | UINT32 BitWidth, |
| 327 | UINT64 *Value, |
| 328 | void *HandlerContext, |
| 329 | void *RegionContext) |
| 330 | { |
| 331 | ACPI_STATUS Status = AE_OK; |
| 332 | UINT32 Value32; |
| 333 | |
| 334 | |
| 335 | ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler); |
| 336 | |
| 337 | |
| 338 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| 339 | "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n" , |
| 340 | BitWidth, Function, ACPI_FORMAT_UINT64 (Address))); |
| 341 | |
| 342 | /* Decode the function parameter */ |
| 343 | |
| 344 | switch (Function) |
| 345 | { |
| 346 | case ACPI_READ: |
| 347 | |
| 348 | Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address, |
| 349 | &Value32, BitWidth); |
| 350 | *Value = Value32; |
| 351 | break; |
| 352 | |
| 353 | case ACPI_WRITE: |
| 354 | |
| 355 | Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address, |
| 356 | (UINT32) *Value, BitWidth); |
| 357 | break; |
| 358 | |
| 359 | default: |
| 360 | |
| 361 | Status = AE_BAD_PARAMETER; |
| 362 | break; |
| 363 | } |
| 364 | |
| 365 | return_ACPI_STATUS (Status); |
| 366 | } |
| 367 | |
| 368 | |
| 369 | /******************************************************************************* |
| 370 | * |
| 371 | * FUNCTION: AcpiExPciConfigSpaceHandler |
| 372 | * |
| 373 | * PARAMETERS: Function - Read or Write operation |
| 374 | * Address - Where in the space to read or write |
| 375 | * BitWidth - Field width in bits (8, 16, or 32) |
| 376 | * Value - Pointer to in or out value |
| 377 | * HandlerContext - Pointer to Handler's context |
| 378 | * RegionContext - Pointer to context specific to the |
| 379 | * accessed region |
| 380 | * |
| 381 | * RETURN: Status |
| 382 | * |
| 383 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) |
| 384 | * |
| 385 | ******************************************************************************/ |
| 386 | |
| 387 | ACPI_STATUS |
| 388 | AcpiExPciConfigSpaceHandler ( |
| 389 | UINT32 Function, |
| 390 | ACPI_PHYSICAL_ADDRESS Address, |
| 391 | UINT32 BitWidth, |
| 392 | UINT64 *Value, |
| 393 | void *HandlerContext, |
| 394 | void *RegionContext) |
| 395 | { |
| 396 | ACPI_STATUS Status = AE_OK; |
| 397 | ACPI_PCI_ID *PciId; |
| 398 | UINT16 PciRegister; |
| 399 | |
| 400 | |
| 401 | ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler); |
| 402 | |
| 403 | |
| 404 | /* |
| 405 | * The arguments to AcpiOs(Read|Write)PciConfiguration are: |
| 406 | * |
| 407 | * PciSegment is the PCI bus segment range 0-31 |
| 408 | * PciBus is the PCI bus number range 0-255 |
| 409 | * PciDevice is the PCI device number range 0-31 |
| 410 | * PciFunction is the PCI device function number |
| 411 | * PciRegister is the Config space register range 0-255 bytes |
| 412 | * |
| 413 | * Value - input value for write, output address for read |
| 414 | * |
| 415 | */ |
| 416 | PciId = (ACPI_PCI_ID *) RegionContext; |
| 417 | PciRegister = (UINT16) (UINT32) Address; |
| 418 | |
| 419 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| 420 | "Pci-Config %u (%u) Seg(%04x) Bus(%04x) " |
| 421 | "Dev(%04x) Func(%04x) Reg(%04x)\n" , |
| 422 | Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, |
| 423 | PciId->Function, PciRegister)); |
| 424 | |
| 425 | switch (Function) |
| 426 | { |
| 427 | case ACPI_READ: |
| 428 | |
| 429 | *Value = 0; |
| 430 | Status = AcpiOsReadPciConfiguration ( |
| 431 | PciId, PciRegister, Value, BitWidth); |
| 432 | break; |
| 433 | |
| 434 | case ACPI_WRITE: |
| 435 | |
| 436 | Status = AcpiOsWritePciConfiguration ( |
| 437 | PciId, PciRegister, *Value, BitWidth); |
| 438 | break; |
| 439 | |
| 440 | default: |
| 441 | |
| 442 | Status = AE_BAD_PARAMETER; |
| 443 | break; |
| 444 | } |
| 445 | |
| 446 | return_ACPI_STATUS (Status); |
| 447 | } |
| 448 | |
| 449 | |
| 450 | /******************************************************************************* |
| 451 | * |
| 452 | * FUNCTION: AcpiExCmosSpaceHandler |
| 453 | * |
| 454 | * PARAMETERS: Function - Read or Write operation |
| 455 | * Address - Where in the space to read or write |
| 456 | * BitWidth - Field width in bits (8, 16, or 32) |
| 457 | * Value - Pointer to in or out value |
| 458 | * HandlerContext - Pointer to Handler's context |
| 459 | * RegionContext - Pointer to context specific to the |
| 460 | * accessed region |
| 461 | * |
| 462 | * RETURN: Status |
| 463 | * |
| 464 | * DESCRIPTION: Handler for the CMOS address space (Op Region) |
| 465 | * |
| 466 | ******************************************************************************/ |
| 467 | |
| 468 | ACPI_STATUS |
| 469 | AcpiExCmosSpaceHandler ( |
| 470 | UINT32 Function, |
| 471 | ACPI_PHYSICAL_ADDRESS Address, |
| 472 | UINT32 BitWidth, |
| 473 | UINT64 *Value, |
| 474 | void *HandlerContext, |
| 475 | void *RegionContext) |
| 476 | { |
| 477 | ACPI_STATUS Status = AE_OK; |
| 478 | |
| 479 | |
| 480 | ACPI_FUNCTION_TRACE (ExCmosSpaceHandler); |
| 481 | |
| 482 | |
| 483 | return_ACPI_STATUS (Status); |
| 484 | } |
| 485 | |
| 486 | |
| 487 | /******************************************************************************* |
| 488 | * |
| 489 | * FUNCTION: AcpiExPciBarSpaceHandler |
| 490 | * |
| 491 | * PARAMETERS: Function - Read or Write operation |
| 492 | * Address - Where in the space to read or write |
| 493 | * BitWidth - Field width in bits (8, 16, or 32) |
| 494 | * Value - Pointer to in or out value |
| 495 | * HandlerContext - Pointer to Handler's context |
| 496 | * RegionContext - Pointer to context specific to the |
| 497 | * accessed region |
| 498 | * |
| 499 | * RETURN: Status |
| 500 | * |
| 501 | * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region) |
| 502 | * |
| 503 | ******************************************************************************/ |
| 504 | |
| 505 | ACPI_STATUS |
| 506 | AcpiExPciBarSpaceHandler ( |
| 507 | UINT32 Function, |
| 508 | ACPI_PHYSICAL_ADDRESS Address, |
| 509 | UINT32 BitWidth, |
| 510 | UINT64 *Value, |
| 511 | void *HandlerContext, |
| 512 | void *RegionContext) |
| 513 | { |
| 514 | ACPI_STATUS Status = AE_OK; |
| 515 | |
| 516 | |
| 517 | ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler); |
| 518 | |
| 519 | |
| 520 | return_ACPI_STATUS (Status); |
| 521 | } |
| 522 | |
| 523 | |
| 524 | /******************************************************************************* |
| 525 | * |
| 526 | * FUNCTION: AcpiExDataTableSpaceHandler |
| 527 | * |
| 528 | * PARAMETERS: Function - Read or Write operation |
| 529 | * Address - Where in the space to read or write |
| 530 | * BitWidth - Field width in bits (8, 16, or 32) |
| 531 | * Value - Pointer to in or out value |
| 532 | * HandlerContext - Pointer to Handler's context |
| 533 | * RegionContext - Pointer to context specific to the |
| 534 | * accessed region |
| 535 | * |
| 536 | * RETURN: Status |
| 537 | * |
| 538 | * DESCRIPTION: Handler for the Data Table address space (Op Region) |
| 539 | * |
| 540 | ******************************************************************************/ |
| 541 | |
| 542 | ACPI_STATUS |
| 543 | AcpiExDataTableSpaceHandler ( |
| 544 | UINT32 Function, |
| 545 | ACPI_PHYSICAL_ADDRESS Address, |
| 546 | UINT32 BitWidth, |
| 547 | UINT64 *Value, |
| 548 | void *HandlerContext, |
| 549 | void *RegionContext) |
| 550 | { |
| 551 | ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler); |
| 552 | |
| 553 | |
| 554 | /* |
| 555 | * Perform the memory read or write. The BitWidth was already |
| 556 | * validated. |
| 557 | */ |
| 558 | switch (Function) |
| 559 | { |
| 560 | case ACPI_READ: |
| 561 | |
| 562 | memcpy (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address), |
| 563 | ACPI_DIV_8 (BitWidth)); |
| 564 | break; |
| 565 | |
| 566 | case ACPI_WRITE: |
| 567 | |
| 568 | memcpy (ACPI_PHYSADDR_TO_PTR (Address), ACPI_CAST_PTR (char, Value), |
| 569 | ACPI_DIV_8 (BitWidth)); |
| 570 | break; |
| 571 | |
| 572 | default: |
| 573 | |
| 574 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
| 575 | } |
| 576 | |
| 577 | return_ACPI_STATUS (AE_OK); |
| 578 | } |
| 579 | |