reactos/drivers/bus/acpi/acpica/executer/exregion.c

   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 }