1 2 /****************************************************************************** 3 * 4 * Module Name: exregion - ACPI default OpRegion (address space) handlers 5 * $Revision: 1.103 $ 6 * 7 *****************************************************************************/ 8 9 /****************************************************************************** 10 * 11 * 1. Copyright Notice 12 * 13 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118 119 #define __EXREGION_C__ 120 121 #include "acpi.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 WindowSize; 161 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED 162 UINT32 Remainder; 163 #endif 164 165 166 ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler); 167 168 169 /* Validate and translate the bit width */ 170 171 switch (BitWidth) 172 { 173 case 8: 174 Length = 1; 175 break; 176 177 case 16: 178 Length = 2; 179 break; 180 181 case 32: 182 Length = 4; 183 break; 184 185 case 64: 186 Length = 8; 187 break; 188 189 default: 190 ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %d", 191 BitWidth)); 192 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 193 } 194 195 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED 196 /* 197 * Hardware does not support non-aligned data transfers, we must verify 198 * the request. 199 */ 200 (void) AcpiUtShortDivide ((ACPI_INTEGER) Address, Length, NULL, &Remainder); 201 if (Remainder != 0) 202 { 203 return_ACPI_STATUS (AE_AML_ALIGNMENT); 204 } 205 #endif 206 207 /* 208 * Does the request fit into the cached memory mapping? 209 * Is 1) Address below the current mapping? OR 210 * 2) Address beyond the current mapping? 211 */ 212 if ((Address < MemInfo->MappedPhysicalAddress) || 213 (((ACPI_INTEGER) Address + Length) > 214 ((ACPI_INTEGER) 215 MemInfo->MappedPhysicalAddress + MemInfo->MappedLength))) 216 { 217 /* 218 * The request cannot be resolved by the current memory mapping; 219 * Delete the existing mapping and create a new one. 220 */ 221 if (MemInfo->MappedLength) 222 { 223 /* Valid mapping, delete it */ 224 225 AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress, 226 MemInfo->MappedLength); 227 } 228 229 /* 230 * Don't attempt to map memory beyond the end of the region, and 231 * constrain the maximum mapping size to something reasonable. 232 */ 233 WindowSize = (ACPI_SIZE) 234 ((MemInfo->Address + MemInfo->Length) - Address); 235 236 if (WindowSize > ACPI_SYSMEM_REGION_WINDOW_SIZE) 237 { 238 WindowSize = ACPI_SYSMEM_REGION_WINDOW_SIZE; 239 } 240 241 /* Create a new mapping starting at the address given */ 242 243 MemInfo->MappedLogicalAddress = AcpiOsMapMemory ( 244 (ACPI_PHYSICAL_ADDRESS) Address, WindowSize); 245 if (!MemInfo->MappedLogicalAddress) 246 { 247 ACPI_ERROR ((AE_INFO, 248 "Could not map memory at %8.8X%8.8X, size %X", 249 ACPI_FORMAT_NATIVE_UINT (Address), (UINT32) WindowSize)); 250 MemInfo->MappedLength = 0; 251 return_ACPI_STATUS (AE_NO_MEMORY); 252 } 253 254 /* Save the physical address and mapping size */ 255 256 MemInfo->MappedPhysicalAddress = Address; 257 MemInfo->MappedLength = WindowSize; 258 } 259 260 /* 261 * Generate a logical pointer corresponding to the address we want to 262 * access 263 */ 264 LogicalAddrPtr = MemInfo->MappedLogicalAddress + 265 ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress); 266 267 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 268 "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n", 269 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address))); 270 271 /* 272 * Perform the memory read or write 273 * 274 * Note: For machines that do not support non-aligned transfers, the target 275 * address was checked for alignment above. We do not attempt to break the 276 * transfer up into smaller (byte-size) chunks because the AML specifically 277 * asked for a transfer width that the hardware may require. 278 */ 279 switch (Function) 280 { 281 case ACPI_READ: 282 283 *Value = 0; 284 switch (BitWidth) 285 { 286 case 8: 287 *Value = (ACPI_INTEGER) ACPI_GET8 (LogicalAddrPtr); 288 break; 289 290 case 16: 291 *Value = (ACPI_INTEGER) ACPI_GET16 (LogicalAddrPtr); 292 break; 293 294 case 32: 295 *Value = (ACPI_INTEGER) ACPI_GET32 (LogicalAddrPtr); 296 break; 297 298 case 64: 299 *Value = (ACPI_INTEGER) ACPI_GET64 (LogicalAddrPtr); 300 break; 301 302 default: 303 /* BitWidth was already validated */ 304 break; 305 } 306 break; 307 308 case ACPI_WRITE: 309 310 switch (BitWidth) 311 { 312 case 8: 313 ACPI_SET8 (LogicalAddrPtr) = (UINT8) *Value; 314 break; 315 316 case 16: 317 ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value; 318 break; 319 320 case 32: 321 ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value; 322 break; 323 324 case 64: 325 ACPI_SET64 (LogicalAddrPtr) = (UINT64) *Value; 326 break; 327 328 default: 329 /* BitWidth was already validated */ 330 break; 331 } 332 break; 333 334 default: 335 Status = AE_BAD_PARAMETER; 336 break; 337 } 338 339 return_ACPI_STATUS (Status); 340 } 341 342 343 /******************************************************************************* 344 * 345 * FUNCTION: AcpiExSystemIoSpaceHandler 346 * 347 * PARAMETERS: Function - Read or Write operation 348 * Address - Where in the space to read or write 349 * BitWidth - Field width in bits (8, 16, or 32) 350 * Value - Pointer to in or out value 351 * HandlerContext - Pointer to Handler's context 352 * RegionContext - Pointer to context specific to the 353 * accessed region 354 * 355 * RETURN: Status 356 * 357 * DESCRIPTION: Handler for the System IO address space (Op Region) 358 * 359 ******************************************************************************/ 360 361 ACPI_STATUS 362 AcpiExSystemIoSpaceHandler ( 363 UINT32 Function, 364 ACPI_PHYSICAL_ADDRESS Address, 365 UINT32 BitWidth, 366 ACPI_INTEGER *Value, 367 void *HandlerContext, 368 void *RegionContext) 369 { 370 ACPI_STATUS Status = AE_OK; 371 UINT32 Value32; 372 373 374 ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler); 375 376 377 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 378 "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n", 379 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address))); 380 381 /* Decode the function parameter */ 382 383 switch (Function) 384 { 385 case ACPI_READ: 386 387 Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address, 388 &Value32, BitWidth); 389 *Value = Value32; 390 break; 391 392 case ACPI_WRITE: 393 394 Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address, 395 (UINT32) *Value, BitWidth); 396 break; 397 398 default: 399 Status = AE_BAD_PARAMETER; 400 break; 401 } 402 403 return_ACPI_STATUS (Status); 404 } 405 406 407 /******************************************************************************* 408 * 409 * FUNCTION: AcpiExPciConfigSpaceHandler 410 * 411 * PARAMETERS: Function - Read or Write operation 412 * Address - Where in the space to read or write 413 * BitWidth - Field width in bits (8, 16, or 32) 414 * Value - Pointer to in or out value 415 * HandlerContext - Pointer to Handler's context 416 * RegionContext - Pointer to context specific to the 417 * accessed region 418 * 419 * RETURN: Status 420 * 421 * DESCRIPTION: Handler for the PCI Config address space (Op Region) 422 * 423 ******************************************************************************/ 424 425 ACPI_STATUS 426 AcpiExPciConfigSpaceHandler ( 427 UINT32 Function, 428 ACPI_PHYSICAL_ADDRESS Address, 429 UINT32 BitWidth, 430 ACPI_INTEGER *Value, 431 void *HandlerContext, 432 void *RegionContext) 433 { 434 ACPI_STATUS Status = AE_OK; 435 ACPI_PCI_ID *PciId; 436 UINT16 PciRegister; 437 438 439 ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler); 440 441 442 /* 443 * The arguments to AcpiOs(Read|Write)PciConfiguration are: 444 * 445 * PciSegment is the PCI bus segment range 0-31 446 * PciBus is the PCI bus number range 0-255 447 * PciDevice is the PCI device number range 0-31 448 * PciFunction is the PCI device function number 449 * PciRegister is the Config space register range 0-255 bytes 450 * 451 * Value - input value for write, output address for read 452 * 453 */ 454 PciId = (ACPI_PCI_ID *) RegionContext; 455 PciRegister = (UINT16) (UINT32) Address; 456 457 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 458 "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", 459 Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, 460 PciId->Function, PciRegister)); 461 462 switch (Function) 463 { 464 case ACPI_READ: 465 466 *Value = 0; 467 Status = AcpiOsReadPciConfiguration (PciId, PciRegister, 468 Value, BitWidth); 469 break; 470 471 case ACPI_WRITE: 472 473 Status = AcpiOsWritePciConfiguration (PciId, PciRegister, 474 *Value, BitWidth); 475 break; 476 477 default: 478 479 Status = AE_BAD_PARAMETER; 480 break; 481 } 482 483 return_ACPI_STATUS (Status); 484 } 485 486 487 /******************************************************************************* 488 * 489 * FUNCTION: AcpiExCmosSpaceHandler 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 CMOS address space (Op Region) 502 * 503 ******************************************************************************/ 504 505 ACPI_STATUS 506 AcpiExCmosSpaceHandler ( 507 UINT32 Function, 508 ACPI_PHYSICAL_ADDRESS Address, 509 UINT32 BitWidth, 510 ACPI_INTEGER *Value, 511 void *HandlerContext, 512 void *RegionContext) 513 { 514 ACPI_STATUS Status = AE_OK; 515 516 517 ACPI_FUNCTION_TRACE (ExCmosSpaceHandler); 518 519 520 return_ACPI_STATUS (Status); 521 } 522 523 524 /******************************************************************************* 525 * 526 * FUNCTION: AcpiExPciBarSpaceHandler 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 PCI BarTarget address space (Op Region) 539 * 540 ******************************************************************************/ 541 542 ACPI_STATUS 543 AcpiExPciBarSpaceHandler ( 544 UINT32 Function, 545 ACPI_PHYSICAL_ADDRESS Address, 546 UINT32 BitWidth, 547 ACPI_INTEGER *Value, 548 void *HandlerContext, 549 void *RegionContext) 550 { 551 ACPI_STATUS Status = AE_OK; 552 553 554 ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler); 555 556 557 return_ACPI_STATUS (Status); 558 } 559 560 561 /******************************************************************************* 562 * 563 * FUNCTION: AcpiExDataTableSpaceHandler 564 * 565 * PARAMETERS: Function - Read or Write operation 566 * Address - Where in the space to read or write 567 * BitWidth - Field width in bits (8, 16, or 32) 568 * Value - Pointer to in or out value 569 * HandlerContext - Pointer to Handler's context 570 * RegionContext - Pointer to context specific to the 571 * accessed region 572 * 573 * RETURN: Status 574 * 575 * DESCRIPTION: Handler for the Data Table address space (Op Region) 576 * 577 ******************************************************************************/ 578 579 ACPI_STATUS 580 AcpiExDataTableSpaceHandler ( 581 UINT32 Function, 582 ACPI_PHYSICAL_ADDRESS Address, 583 UINT32 BitWidth, 584 ACPI_INTEGER *Value, 585 void *HandlerContext, 586 void *RegionContext) 587 { 588 ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler); 589 590 591 /* Perform the memory read or write */ 592 593 switch (Function) 594 { 595 case ACPI_READ: 596 597 ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address), 598 ACPI_DIV_8 (BitWidth)); 599 break; 600 601 case ACPI_WRITE: 602 default: 603 604 return_ACPI_STATUS (AE_SUPPORT); 605 } 606 607 return_ACPI_STATUS (AE_OK); 608 } 609 610 611