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

   1 /******************************************************************************
   2  *
   3  * Module Name: exfield - ACPI AML (p-code) execution - field manipulation
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2015, 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 #include "acpi.h"
 117 #include "accommon.h"
 118 #include "acdispat.h"
 119 #include "acinterp.h"
 120 #include "amlcode.h"
 121
 122
 123 #define _COMPONENT          ACPI_EXECUTER
 124         ACPI_MODULE_NAME    ("exfield")
 125
 126 /* Local prototypes */
 127
 128 static UINT32
 129 AcpiExGetSerialAccessLength (
 130     UINT32                  AccessorType,
 131     UINT32                  AccessLength);
 132
 133
 134 /*******************************************************************************
 135  *
 136  * FUNCTION:    AcpiExGetSerialAccessLength
 137  *
 138  * PARAMETERS:  AccessorType    - The type of the protocol indicated by region
 139  *                                field access attributes
 140  *              AccessLength    - The access length of the region field
 141  *
 142  * RETURN:      Decoded access length
 143  *
 144  * DESCRIPTION: This routine returns the length of the GenericSerialBus
 145  *              protocol bytes
 146  *
 147  ******************************************************************************/
 148
 149 static UINT32
 150 AcpiExGetSerialAccessLength (
 151     UINT32                  AccessorType,
 152     UINT32                  AccessLength)
 153 {
 154     UINT32                  Length;
 155
 156
 157     switch (AccessorType)
 158     {
 159     case AML_FIELD_ATTRIB_QUICK:
 160
 161         Length = 0;
 162         break;
 163
 164     case AML_FIELD_ATTRIB_SEND_RCV:
 165     case AML_FIELD_ATTRIB_BYTE:
 166
 167         Length = 1;
 168         break;
 169
 170     case AML_FIELD_ATTRIB_WORD:
 171     case AML_FIELD_ATTRIB_WORD_CALL:
 172
 173         Length = 2;
 174         break;
 175
 176     case AML_FIELD_ATTRIB_MULTIBYTE:
 177     case AML_FIELD_ATTRIB_RAW_BYTES:
 178     case AML_FIELD_ATTRIB_RAW_PROCESS:
 179
 180         Length = AccessLength;
 181         break;
 182
 183     case AML_FIELD_ATTRIB_BLOCK:
 184     case AML_FIELD_ATTRIB_BLOCK_CALL:
 185     default:
 186
 187         Length = ACPI_GSBUS_BUFFER_SIZE - 2;
 188         break;
 189     }
 190
 191     return (Length);
 192 }
 193
 194
 195 /*******************************************************************************
 196  *
 197  * FUNCTION:    AcpiExReadDataFromField
 198  *
 199  * PARAMETERS:  WalkState           - Current execution state
 200  *              ObjDesc             - The named field
 201  *              RetBufferDesc       - Where the return data object is stored
 202  *
 203  * RETURN:      Status
 204  *
 205  * DESCRIPTION: Read from a named field. Returns either an Integer or a
 206  *              Buffer, depending on the size of the field.
 207  *
 208  ******************************************************************************/
 209
 210 ACPI_STATUS
 211 AcpiExReadDataFromField (
 212     ACPI_WALK_STATE         *WalkState,
 213     ACPI_OPERAND_OBJECT     *ObjDesc,
 214     ACPI_OPERAND_OBJECT     **RetBufferDesc)
 215 {
 216     ACPI_STATUS             Status;
 217     ACPI_OPERAND_OBJECT     *BufferDesc;
 218     ACPI_SIZE               Length;
 219     void                    *Buffer;
 220     UINT32                  Function;
 221     UINT16                  AccessorType;
 222
 223
 224     ACPI_FUNCTION_TRACE_PTR (ExReadDataFromField, ObjDesc);
 225
 226
 227     /* Parameter validation */
 228
 229     if (!ObjDesc)
 230     {
 231         return_ACPI_STATUS (AE_AML_NO_OPERAND);
 232     }
 233     if (!RetBufferDesc)
 234     {
 235         return_ACPI_STATUS (AE_BAD_PARAMETER);
 236     }
 237
 238     if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
 239     {
 240         /*
 241          * If the BufferField arguments have not been previously evaluated,
 242          * evaluate them now and save the results.
 243          */
 244         if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
 245         {
 246             Status = AcpiDsGetBufferFieldArguments (ObjDesc);
 247             if (ACPI_FAILURE (Status))
 248             {
 249                 return_ACPI_STATUS (Status);
 250             }
 251         }
 252     }
 253     else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
 254              (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS ||
 255               ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS ||
 256               ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI))
 257     {
 258         /*
 259          * This is an SMBus, GSBus or IPMI read. We must create a buffer to hold
 260          * the data and then directly access the region handler.
 261          *
 262          * Note: SMBus and GSBus protocol value is passed in upper 16-bits of Function
 263          */
 264         if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS)
 265         {
 266             Length = ACPI_SMBUS_BUFFER_SIZE;
 267             Function = ACPI_READ | (ObjDesc->Field.Attribute << 16);
 268         }
 269         else if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS)
 270         {
 271             AccessorType = ObjDesc->Field.Attribute;
 272             Length = AcpiExGetSerialAccessLength (AccessorType,
 273                 ObjDesc->Field.AccessLength);
 274
 275             /*
 276              * Add additional 2 bytes for the GenericSerialBus data buffer:
 277              *
 278              *     Status;      (Byte 0 of the data buffer)
 279              *     Length;      (Byte 1 of the data buffer)
 280              *     Data[x-1];   (Bytes 2-x of the arbitrary length data buffer)
 281              */
 282             Length += 2;
 283             Function = ACPI_READ | (AccessorType << 16);
 284         }
 285         else /* IPMI */
 286         {
 287             Length = ACPI_IPMI_BUFFER_SIZE;
 288             Function = ACPI_READ;
 289         }
 290
 291         BufferDesc = AcpiUtCreateBufferObject (Length);
 292         if (!BufferDesc)
 293         {
 294             return_ACPI_STATUS (AE_NO_MEMORY);
 295         }
 296
 297         /* Lock entire transaction if requested */
 298
 299         AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
 300
 301         /* Call the region handler for the read */
 302
 303         Status = AcpiExAccessRegion (ObjDesc, 0,
 304                     ACPI_CAST_PTR (UINT64, BufferDesc->Buffer.Pointer),
 305                     Function);
 306         AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
 307         goto Exit;
 308     }
 309
 310     /*
 311      * Allocate a buffer for the contents of the field.
 312      *
 313      * If the field is larger than the current integer width, create
 314      * a BUFFER to hold it. Otherwise, use an INTEGER. This allows
 315      * the use of arithmetic operators on the returned value if the
 316      * field size is equal or smaller than an Integer.
 317      *
 318      * Note: Field.length is in bits.
 319      */
 320     Length = (ACPI_SIZE) ACPI_ROUND_BITS_UP_TO_BYTES (ObjDesc->Field.BitLength);
 321     if (Length > AcpiGbl_IntegerByteWidth)
 322     {
 323         /* Field is too large for an Integer, create a Buffer instead */
 324
 325         BufferDesc = AcpiUtCreateBufferObject (Length);
 326         if (!BufferDesc)
 327         {
 328             return_ACPI_STATUS (AE_NO_MEMORY);
 329         }
 330         Buffer = BufferDesc->Buffer.Pointer;
 331     }
 332     else
 333     {
 334         /* Field will fit within an Integer (normal case) */
 335
 336         BufferDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
 337         if (!BufferDesc)
 338         {
 339             return_ACPI_STATUS (AE_NO_MEMORY);
 340         }
 341
 342         Length = AcpiGbl_IntegerByteWidth;
 343         Buffer = &BufferDesc->Integer.Value;
 344     }
 345
 346     if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
 347         (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO))
 348     {
 349         /*
 350          * For GPIO (GeneralPurposeIo), the Address will be the bit offset
 351          * from the previous Connection() operator, making it effectively a
 352          * pin number index. The BitLength is the length of the field, which
 353          * is thus the number of pins.
 354          */
 355         ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
 356             "GPIO FieldRead [FROM]:  Pin %u Bits %u\n",
 357             ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength));
 358
 359         /* Lock entire transaction if requested */
 360
 361         AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
 362
 363         /* Perform the write */
 364
 365         Status = AcpiExAccessRegion (ObjDesc, 0,
 366                     (UINT64 *) Buffer, ACPI_READ);
 367         AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
 368         if (ACPI_FAILURE (Status))
 369         {
 370             AcpiUtRemoveReference (BufferDesc);
 371         }
 372         else
 373         {
 374             *RetBufferDesc = BufferDesc;
 375         }
 376         return_ACPI_STATUS (Status);
 377     }
 378
 379     ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
 380         "FieldRead [TO]:   Obj %p, Type %X, Buf %p, ByteLen %X\n",
 381         ObjDesc, ObjDesc->Common.Type, Buffer, (UINT32) Length));
 382     ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
 383         "FieldRead [FROM]: BitLen %X, BitOff %X, ByteOff %X\n",
 384         ObjDesc->CommonField.BitLength,
 385         ObjDesc->CommonField.StartFieldBitOffset,
 386         ObjDesc->CommonField.BaseByteOffset));
 387
 388     /* Lock entire transaction if requested */
 389
 390     AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
 391
 392     /* Read from the field */
 393
 394     Status = AcpiExExtractFromField (ObjDesc, Buffer, (UINT32) Length);
 395     AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
 396
 397
 398 Exit:
 399     if (ACPI_FAILURE (Status))
 400     {
 401         AcpiUtRemoveReference (BufferDesc);
 402     }
 403     else
 404     {
 405         *RetBufferDesc = BufferDesc;
 406     }
 407
 408     return_ACPI_STATUS (Status);
 409 }
 410
 411
 412 /*******************************************************************************
 413  *
 414  * FUNCTION:    AcpiExWriteDataToField
 415  *
 416  * PARAMETERS:  SourceDesc          - Contains data to write
 417  *              ObjDesc             - The named field
 418  *              ResultDesc          - Where the return value is returned, if any
 419  *
 420  * RETURN:      Status
 421  *
 422  * DESCRIPTION: Write to a named field
 423  *
 424  ******************************************************************************/
 425
 426 ACPI_STATUS
 427 AcpiExWriteDataToField (
 428     ACPI_OPERAND_OBJECT     *SourceDesc,
 429     ACPI_OPERAND_OBJECT     *ObjDesc,
 430     ACPI_OPERAND_OBJECT     **ResultDesc)
 431 {
 432     ACPI_STATUS             Status;
 433     UINT32                  Length;
 434     void                    *Buffer;
 435     ACPI_OPERAND_OBJECT     *BufferDesc;
 436     UINT32                  Function;
 437     UINT16                  AccessorType;
 438
 439
 440     ACPI_FUNCTION_TRACE_PTR (ExWriteDataToField, ObjDesc);
 441
 442
 443     /* Parameter validation */
 444
 445     if (!SourceDesc || !ObjDesc)
 446     {
 447         return_ACPI_STATUS (AE_AML_NO_OPERAND);
 448     }
 449
 450     if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
 451     {
 452         /*
 453          * If the BufferField arguments have not been previously evaluated,
 454          * evaluate them now and save the results.
 455          */
 456         if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
 457         {
 458             Status = AcpiDsGetBufferFieldArguments (ObjDesc);
 459             if (ACPI_FAILURE (Status))
 460             {
 461                 return_ACPI_STATUS (Status);
 462             }
 463         }
 464     }
 465     else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
 466              (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS ||
 467               ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS ||
 468               ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI))
 469     {
 470         /*
 471          * This is an SMBus, GSBus or IPMI write. We will bypass the entire field
 472          * mechanism and handoff the buffer directly to the handler. For
 473          * these address spaces, the buffer is bi-directional; on a write,
 474          * return data is returned in the same buffer.
 475          *
 476          * Source must be a buffer of sufficient size:
 477          * ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
 478          *
 479          * Note: SMBus and GSBus protocol type is passed in upper 16-bits of Function
 480          */
 481         if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER)
 482         {
 483             ACPI_ERROR ((AE_INFO,
 484                 "SMBus/IPMI/GenericSerialBus write requires Buffer, found type %s",
 485                 AcpiUtGetObjectTypeName (SourceDesc)));
 486
 487             return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
 488         }
 489
 490         if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS)
 491         {
 492             Length = ACPI_SMBUS_BUFFER_SIZE;
 493             Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16);
 494         }
 495         else if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS)
 496         {
 497             AccessorType = ObjDesc->Field.Attribute;
 498             Length = AcpiExGetSerialAccessLength (AccessorType,
 499                 ObjDesc->Field.AccessLength);
 500
 501             /*
 502              * Add additional 2 bytes for the GenericSerialBus data buffer:
 503              *
 504              *     Status;      (Byte 0 of the data buffer)
 505              *     Length;      (Byte 1 of the data buffer)
 506              *     Data[x-1];   (Bytes 2-x of the arbitrary length data buffer)
 507              */
 508             Length += 2;
 509             Function = ACPI_WRITE | (AccessorType << 16);
 510         }
 511         else /* IPMI */
 512         {
 513             Length = ACPI_IPMI_BUFFER_SIZE;
 514             Function = ACPI_WRITE;
 515         }
 516
 517         if (SourceDesc->Buffer.Length < Length)
 518         {
 519             ACPI_ERROR ((AE_INFO,
 520                 "SMBus/IPMI/GenericSerialBus write requires Buffer of length %u, found length %u",
 521                 Length, SourceDesc->Buffer.Length));
 522
 523             return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
 524         }
 525
 526         /* Create the bi-directional buffer */
 527
 528         BufferDesc = AcpiUtCreateBufferObject (Length);
 529         if (!BufferDesc)
 530         {
 531             return_ACPI_STATUS (AE_NO_MEMORY);
 532         }
 533
 534         Buffer = BufferDesc->Buffer.Pointer;
 535         memcpy (Buffer, SourceDesc->Buffer.Pointer, Length);
 536
 537         /* Lock entire transaction if requested */
 538
 539         AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
 540
 541         /*
 542          * Perform the write (returns status and perhaps data in the
 543          * same buffer)
 544          */
 545         Status = AcpiExAccessRegion (ObjDesc, 0,
 546                     (UINT64 *) Buffer, Function);
 547         AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
 548
 549         *ResultDesc = BufferDesc;
 550         return_ACPI_STATUS (Status);
 551     }
 552     else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
 553              (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO))
 554     {
 555         /*
 556          * For GPIO (GeneralPurposeIo), we will bypass the entire field
 557          * mechanism and handoff the bit address and bit width directly to
 558          * the handler. The Address will be the bit offset
 559          * from the previous Connection() operator, making it effectively a
 560          * pin number index. The BitLength is the length of the field, which
 561          * is thus the number of pins.
 562          */
 563         if (SourceDesc->Common.Type != ACPI_TYPE_INTEGER)
 564         {
 565             return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
 566         }
 567
 568         ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
 569             "GPIO FieldWrite [FROM]: (%s:%X), Val %.8X  [TO]:  Pin %u Bits %u\n",
 570             AcpiUtGetTypeName (SourceDesc->Common.Type),
 571             SourceDesc->Common.Type, (UINT32) SourceDesc->Integer.Value,
 572             ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength));
 573
 574         Buffer = &SourceDesc->Integer.Value;
 575
 576         /* Lock entire transaction if requested */
 577
 578         AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
 579
 580         /* Perform the write */
 581
 582         Status = AcpiExAccessRegion (ObjDesc, 0,
 583                     (UINT64 *) Buffer, ACPI_WRITE);
 584         AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
 585         return_ACPI_STATUS (Status);
 586     }
 587
 588     /* Get a pointer to the data to be written */
 589
 590     switch (SourceDesc->Common.Type)
 591     {
 592     case ACPI_TYPE_INTEGER:
 593
 594         Buffer = &SourceDesc->Integer.Value;
 595         Length = sizeof (SourceDesc->Integer.Value);
 596         break;
 597
 598     case ACPI_TYPE_BUFFER:
 599
 600         Buffer = SourceDesc->Buffer.Pointer;
 601         Length = SourceDesc->Buffer.Length;
 602         break;
 603
 604     case ACPI_TYPE_STRING:
 605
 606         Buffer = SourceDesc->String.Pointer;
 607         Length = SourceDesc->String.Length;
 608         break;
 609
 610     default:
 611
 612         return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
 613     }
 614
 615     ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
 616         "FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
 617         SourceDesc, AcpiUtGetTypeName (SourceDesc->Common.Type),
 618         SourceDesc->Common.Type, Buffer, Length));
 619
 620     ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
 621         "FieldWrite [TO]:   Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n",
 622         ObjDesc, AcpiUtGetTypeName (ObjDesc->Common.Type),
 623         ObjDesc->Common.Type,
 624         ObjDesc->CommonField.BitLength,
 625         ObjDesc->CommonField.StartFieldBitOffset,
 626         ObjDesc->CommonField.BaseByteOffset));
 627
 628     /* Lock entire transaction if requested */
 629
 630     AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
 631
 632     /* Write to the field */
 633
 634     Status = AcpiExInsertIntoField (ObjDesc, Buffer, Length);
 635     AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
 636
 637     return_ACPI_STATUS (Status);
 638 }