| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: exfield - ACPI AML (p-code) execution - field manipulation |
| 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 "acdispat.h" |
| 47 | #include "acinterp.h" |
| 48 | #include "amlcode.h" |
| 49 | |
| 50 | |
| 51 | #define _COMPONENT ACPI_EXECUTER |
| 52 | ACPI_MODULE_NAME ("exfield" ) |
| 53 | |
| 54 | /* Local prototypes */ |
| 55 | |
| 56 | static UINT32 |
| 57 | AcpiExGetSerialAccessLength ( |
| 58 | UINT32 AccessorType, |
| 59 | UINT32 AccessLength); |
| 60 | |
| 61 | |
| 62 | /******************************************************************************* |
| 63 | * |
| 64 | * FUNCTION: AcpiExGetSerialAccessLength |
| 65 | * |
| 66 | * PARAMETERS: AccessorType - The type of the protocol indicated by region |
| 67 | * field access attributes |
| 68 | * AccessLength - The access length of the region field |
| 69 | * |
| 70 | * RETURN: Decoded access length |
| 71 | * |
| 72 | * DESCRIPTION: This routine returns the length of the GenericSerialBus |
| 73 | * protocol bytes |
| 74 | * |
| 75 | ******************************************************************************/ |
| 76 | |
| 77 | static UINT32 |
| 78 | AcpiExGetSerialAccessLength ( |
| 79 | UINT32 AccessorType, |
| 80 | UINT32 AccessLength) |
| 81 | { |
| 82 | UINT32 Length; |
| 83 | |
| 84 | |
| 85 | switch (AccessorType) |
| 86 | { |
| 87 | case AML_FIELD_ATTRIB_QUICK: |
| 88 | |
| 89 | Length = 0; |
| 90 | break; |
| 91 | |
| 92 | case AML_FIELD_ATTRIB_SEND_RCV: |
| 93 | case AML_FIELD_ATTRIB_BYTE: |
| 94 | |
| 95 | Length = 1; |
| 96 | break; |
| 97 | |
| 98 | case AML_FIELD_ATTRIB_WORD: |
| 99 | case AML_FIELD_ATTRIB_WORD_CALL: |
| 100 | |
| 101 | Length = 2; |
| 102 | break; |
| 103 | |
| 104 | case AML_FIELD_ATTRIB_MULTIBYTE: |
| 105 | case AML_FIELD_ATTRIB_RAW_BYTES: |
| 106 | case AML_FIELD_ATTRIB_RAW_PROCESS: |
| 107 | |
| 108 | Length = AccessLength; |
| 109 | break; |
| 110 | |
| 111 | case AML_FIELD_ATTRIB_BLOCK: |
| 112 | case AML_FIELD_ATTRIB_BLOCK_CALL: |
| 113 | default: |
| 114 | |
| 115 | Length = ACPI_GSBUS_BUFFER_SIZE - 2; |
| 116 | break; |
| 117 | } |
| 118 | |
| 119 | return (Length); |
| 120 | } |
| 121 | |
| 122 | |
| 123 | /******************************************************************************* |
| 124 | * |
| 125 | * FUNCTION: AcpiExReadDataFromField |
| 126 | * |
| 127 | * PARAMETERS: WalkState - Current execution state |
| 128 | * ObjDesc - The named field |
| 129 | * RetBufferDesc - Where the return data object is stored |
| 130 | * |
| 131 | * RETURN: Status |
| 132 | * |
| 133 | * DESCRIPTION: Read from a named field. Returns either an Integer or a |
| 134 | * Buffer, depending on the size of the field. |
| 135 | * |
| 136 | ******************************************************************************/ |
| 137 | |
| 138 | ACPI_STATUS |
| 139 | AcpiExReadDataFromField ( |
| 140 | ACPI_WALK_STATE *WalkState, |
| 141 | ACPI_OPERAND_OBJECT *ObjDesc, |
| 142 | ACPI_OPERAND_OBJECT **RetBufferDesc) |
| 143 | { |
| 144 | ACPI_STATUS Status; |
| 145 | ACPI_OPERAND_OBJECT *BufferDesc; |
| 146 | ACPI_SIZE Length; |
| 147 | void *Buffer; |
| 148 | UINT32 Function; |
| 149 | UINT16 AccessorType; |
| 150 | |
| 151 | |
| 152 | ACPI_FUNCTION_TRACE_PTR (ExReadDataFromField, ObjDesc); |
| 153 | |
| 154 | |
| 155 | /* Parameter validation */ |
| 156 | |
| 157 | if (!ObjDesc) |
| 158 | { |
| 159 | return_ACPI_STATUS (AE_AML_NO_OPERAND); |
| 160 | } |
| 161 | if (!RetBufferDesc) |
| 162 | { |
| 163 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
| 164 | } |
| 165 | |
| 166 | if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD) |
| 167 | { |
| 168 | /* |
| 169 | * If the BufferField arguments have not been previously evaluated, |
| 170 | * evaluate them now and save the results. |
| 171 | */ |
| 172 | if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)) |
| 173 | { |
| 174 | Status = AcpiDsGetBufferFieldArguments (ObjDesc); |
| 175 | if (ACPI_FAILURE (Status)) |
| 176 | { |
| 177 | return_ACPI_STATUS (Status); |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && |
| 182 | (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS || |
| 183 | ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS || |
| 184 | ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI)) |
| 185 | { |
| 186 | /* |
| 187 | * This is an SMBus, GSBus or IPMI read. We must create a buffer to |
| 188 | * hold the data and then directly access the region handler. |
| 189 | * |
| 190 | * Note: SMBus and GSBus protocol value is passed in upper 16-bits |
| 191 | * of Function |
| 192 | */ |
| 193 | if (ObjDesc->Field.RegionObj->Region.SpaceId == |
| 194 | ACPI_ADR_SPACE_SMBUS) |
| 195 | { |
| 196 | Length = ACPI_SMBUS_BUFFER_SIZE; |
| 197 | Function = ACPI_READ | (ObjDesc->Field.Attribute << 16); |
| 198 | } |
| 199 | else if (ObjDesc->Field.RegionObj->Region.SpaceId == |
| 200 | ACPI_ADR_SPACE_GSBUS) |
| 201 | { |
| 202 | AccessorType = ObjDesc->Field.Attribute; |
| 203 | Length = AcpiExGetSerialAccessLength ( |
| 204 | AccessorType, ObjDesc->Field.AccessLength); |
| 205 | |
| 206 | /* |
| 207 | * Add additional 2 bytes for the GenericSerialBus data buffer: |
| 208 | * |
| 209 | * Status; (Byte 0 of the data buffer) |
| 210 | * Length; (Byte 1 of the data buffer) |
| 211 | * Data[x-1]: (Bytes 2-x of the arbitrary length data buffer) |
| 212 | */ |
| 213 | Length += 2; |
| 214 | Function = ACPI_READ | (AccessorType << 16); |
| 215 | } |
| 216 | else /* IPMI */ |
| 217 | { |
| 218 | Length = ACPI_IPMI_BUFFER_SIZE; |
| 219 | Function = ACPI_READ; |
| 220 | } |
| 221 | |
| 222 | BufferDesc = AcpiUtCreateBufferObject (Length); |
| 223 | if (!BufferDesc) |
| 224 | { |
| 225 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 226 | } |
| 227 | |
| 228 | /* Lock entire transaction if requested */ |
| 229 | |
| 230 | AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 231 | |
| 232 | /* Call the region handler for the read */ |
| 233 | |
| 234 | Status = AcpiExAccessRegion (ObjDesc, 0, |
| 235 | ACPI_CAST_PTR (UINT64, BufferDesc->Buffer.Pointer), Function); |
| 236 | |
| 237 | AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 238 | goto Exit; |
| 239 | } |
| 240 | |
| 241 | /* |
| 242 | * Allocate a buffer for the contents of the field. |
| 243 | * |
| 244 | * If the field is larger than the current integer width, create |
| 245 | * a BUFFER to hold it. Otherwise, use an INTEGER. This allows |
| 246 | * the use of arithmetic operators on the returned value if the |
| 247 | * field size is equal or smaller than an Integer. |
| 248 | * |
| 249 | * Note: Field.length is in bits. |
| 250 | */ |
| 251 | Length = (ACPI_SIZE) ACPI_ROUND_BITS_UP_TO_BYTES ( |
| 252 | ObjDesc->Field.BitLength); |
| 253 | |
| 254 | if (Length > AcpiGbl_IntegerByteWidth) |
| 255 | { |
| 256 | /* Field is too large for an Integer, create a Buffer instead */ |
| 257 | |
| 258 | BufferDesc = AcpiUtCreateBufferObject (Length); |
| 259 | if (!BufferDesc) |
| 260 | { |
| 261 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 262 | } |
| 263 | Buffer = BufferDesc->Buffer.Pointer; |
| 264 | } |
| 265 | else |
| 266 | { |
| 267 | /* Field will fit within an Integer (normal case) */ |
| 268 | |
| 269 | BufferDesc = AcpiUtCreateIntegerObject ((UINT64) 0); |
| 270 | if (!BufferDesc) |
| 271 | { |
| 272 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 273 | } |
| 274 | |
| 275 | Length = AcpiGbl_IntegerByteWidth; |
| 276 | Buffer = &BufferDesc->Integer.Value; |
| 277 | } |
| 278 | |
| 279 | if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && |
| 280 | (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) |
| 281 | { |
| 282 | /* |
| 283 | * For GPIO (GeneralPurposeIo), the Address will be the bit offset |
| 284 | * from the previous Connection() operator, making it effectively a |
| 285 | * pin number index. The BitLength is the length of the field, which |
| 286 | * is thus the number of pins. |
| 287 | */ |
| 288 | ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, |
| 289 | "GPIO FieldRead [FROM]: Pin %u Bits %u\n" , |
| 290 | ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength)); |
| 291 | |
| 292 | /* Lock entire transaction if requested */ |
| 293 | |
| 294 | AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 295 | |
| 296 | /* Perform the write */ |
| 297 | |
| 298 | Status = AcpiExAccessRegion ( |
| 299 | ObjDesc, 0, (UINT64 *) Buffer, ACPI_READ); |
| 300 | |
| 301 | AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 302 | if (ACPI_FAILURE (Status)) |
| 303 | { |
| 304 | AcpiUtRemoveReference (BufferDesc); |
| 305 | } |
| 306 | else |
| 307 | { |
| 308 | *RetBufferDesc = BufferDesc; |
| 309 | } |
| 310 | return_ACPI_STATUS (Status); |
| 311 | } |
| 312 | |
| 313 | ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, |
| 314 | "FieldRead [TO]: Obj %p, Type %X, Buf %p, ByteLen %X\n" , |
| 315 | ObjDesc, ObjDesc->Common.Type, Buffer, (UINT32) Length)); |
| 316 | ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, |
| 317 | "FieldRead [FROM]: BitLen %X, BitOff %X, ByteOff %X\n" , |
| 318 | ObjDesc->CommonField.BitLength, |
| 319 | ObjDesc->CommonField.StartFieldBitOffset, |
| 320 | ObjDesc->CommonField.BaseByteOffset)); |
| 321 | |
| 322 | /* Lock entire transaction if requested */ |
| 323 | |
| 324 | AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 325 | |
| 326 | /* Read from the field */ |
| 327 | |
| 328 | Status = AcpiExExtractFromField (ObjDesc, Buffer, (UINT32) Length); |
| 329 | AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 330 | |
| 331 | |
| 332 | Exit: |
| 333 | if (ACPI_FAILURE (Status)) |
| 334 | { |
| 335 | AcpiUtRemoveReference (BufferDesc); |
| 336 | } |
| 337 | else |
| 338 | { |
| 339 | *RetBufferDesc = BufferDesc; |
| 340 | } |
| 341 | |
| 342 | return_ACPI_STATUS (Status); |
| 343 | } |
| 344 | |
| 345 | |
| 346 | /******************************************************************************* |
| 347 | * |
| 348 | * FUNCTION: AcpiExWriteDataToField |
| 349 | * |
| 350 | * PARAMETERS: SourceDesc - Contains data to write |
| 351 | * ObjDesc - The named field |
| 352 | * ResultDesc - Where the return value is returned, if any |
| 353 | * |
| 354 | * RETURN: Status |
| 355 | * |
| 356 | * DESCRIPTION: Write to a named field |
| 357 | * |
| 358 | ******************************************************************************/ |
| 359 | |
| 360 | ACPI_STATUS |
| 361 | AcpiExWriteDataToField ( |
| 362 | ACPI_OPERAND_OBJECT *SourceDesc, |
| 363 | ACPI_OPERAND_OBJECT *ObjDesc, |
| 364 | ACPI_OPERAND_OBJECT **ResultDesc) |
| 365 | { |
| 366 | ACPI_STATUS Status; |
| 367 | UINT32 Length; |
| 368 | void *Buffer; |
| 369 | ACPI_OPERAND_OBJECT *BufferDesc; |
| 370 | UINT32 Function; |
| 371 | UINT16 AccessorType; |
| 372 | |
| 373 | |
| 374 | ACPI_FUNCTION_TRACE_PTR (ExWriteDataToField, ObjDesc); |
| 375 | |
| 376 | |
| 377 | /* Parameter validation */ |
| 378 | |
| 379 | if (!SourceDesc || !ObjDesc) |
| 380 | { |
| 381 | return_ACPI_STATUS (AE_AML_NO_OPERAND); |
| 382 | } |
| 383 | |
| 384 | if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD) |
| 385 | { |
| 386 | /* |
| 387 | * If the BufferField arguments have not been previously evaluated, |
| 388 | * evaluate them now and save the results. |
| 389 | */ |
| 390 | if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)) |
| 391 | { |
| 392 | Status = AcpiDsGetBufferFieldArguments (ObjDesc); |
| 393 | if (ACPI_FAILURE (Status)) |
| 394 | { |
| 395 | return_ACPI_STATUS (Status); |
| 396 | } |
| 397 | } |
| 398 | } |
| 399 | else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && |
| 400 | (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS || |
| 401 | ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS || |
| 402 | ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI)) |
| 403 | { |
| 404 | /* |
| 405 | * This is an SMBus, GSBus or IPMI write. We will bypass the entire |
| 406 | * field mechanism and handoff the buffer directly to the handler. |
| 407 | * For these address spaces, the buffer is bi-directional; on a |
| 408 | * write, return data is returned in the same buffer. |
| 409 | * |
| 410 | * Source must be a buffer of sufficient size: |
| 411 | * ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or |
| 412 | * ACPI_IPMI_BUFFER_SIZE. |
| 413 | * |
| 414 | * Note: SMBus and GSBus protocol type is passed in upper 16-bits |
| 415 | * of Function |
| 416 | */ |
| 417 | if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) |
| 418 | { |
| 419 | ACPI_ERROR ((AE_INFO, |
| 420 | "SMBus/IPMI/GenericSerialBus write requires " |
| 421 | "Buffer, found type %s" , |
| 422 | AcpiUtGetObjectTypeName (SourceDesc))); |
| 423 | |
| 424 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 425 | } |
| 426 | |
| 427 | if (ObjDesc->Field.RegionObj->Region.SpaceId == |
| 428 | ACPI_ADR_SPACE_SMBUS) |
| 429 | { |
| 430 | Length = ACPI_SMBUS_BUFFER_SIZE; |
| 431 | Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16); |
| 432 | } |
| 433 | else if (ObjDesc->Field.RegionObj->Region.SpaceId == |
| 434 | ACPI_ADR_SPACE_GSBUS) |
| 435 | { |
| 436 | AccessorType = ObjDesc->Field.Attribute; |
| 437 | Length = AcpiExGetSerialAccessLength ( |
| 438 | AccessorType, ObjDesc->Field.AccessLength); |
| 439 | |
| 440 | /* |
| 441 | * Add additional 2 bytes for the GenericSerialBus data buffer: |
| 442 | * |
| 443 | * Status; (Byte 0 of the data buffer) |
| 444 | * Length; (Byte 1 of the data buffer) |
| 445 | * Data[x-1]: (Bytes 2-x of the arbitrary length data buffer) |
| 446 | */ |
| 447 | Length += 2; |
| 448 | Function = ACPI_WRITE | (AccessorType << 16); |
| 449 | } |
| 450 | else /* IPMI */ |
| 451 | { |
| 452 | Length = ACPI_IPMI_BUFFER_SIZE; |
| 453 | Function = ACPI_WRITE; |
| 454 | } |
| 455 | |
| 456 | if (SourceDesc->Buffer.Length < Length) |
| 457 | { |
| 458 | ACPI_ERROR ((AE_INFO, |
| 459 | "SMBus/IPMI/GenericSerialBus write requires " |
| 460 | "Buffer of length %u, found length %u" , |
| 461 | Length, SourceDesc->Buffer.Length)); |
| 462 | |
| 463 | return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); |
| 464 | } |
| 465 | |
| 466 | /* Create the bi-directional buffer */ |
| 467 | |
| 468 | BufferDesc = AcpiUtCreateBufferObject (Length); |
| 469 | if (!BufferDesc) |
| 470 | { |
| 471 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 472 | } |
| 473 | |
| 474 | Buffer = BufferDesc->Buffer.Pointer; |
| 475 | memcpy (Buffer, SourceDesc->Buffer.Pointer, Length); |
| 476 | |
| 477 | /* Lock entire transaction if requested */ |
| 478 | |
| 479 | AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 480 | |
| 481 | /* |
| 482 | * Perform the write (returns status and perhaps data in the |
| 483 | * same buffer) |
| 484 | */ |
| 485 | Status = AcpiExAccessRegion ( |
| 486 | ObjDesc, 0, (UINT64 *) Buffer, Function); |
| 487 | AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 488 | |
| 489 | *ResultDesc = BufferDesc; |
| 490 | return_ACPI_STATUS (Status); |
| 491 | } |
| 492 | else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && |
| 493 | (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) |
| 494 | { |
| 495 | /* |
| 496 | * For GPIO (GeneralPurposeIo), we will bypass the entire field |
| 497 | * mechanism and handoff the bit address and bit width directly to |
| 498 | * the handler. The Address will be the bit offset |
| 499 | * from the previous Connection() operator, making it effectively a |
| 500 | * pin number index. The BitLength is the length of the field, which |
| 501 | * is thus the number of pins. |
| 502 | */ |
| 503 | if (SourceDesc->Common.Type != ACPI_TYPE_INTEGER) |
| 504 | { |
| 505 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 506 | } |
| 507 | |
| 508 | ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, |
| 509 | "GPIO FieldWrite [FROM]: (%s:%X), Val %.8X [TO]: Pin %u Bits %u\n" , |
| 510 | AcpiUtGetTypeName (SourceDesc->Common.Type), |
| 511 | SourceDesc->Common.Type, (UINT32) SourceDesc->Integer.Value, |
| 512 | ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength)); |
| 513 | |
| 514 | Buffer = &SourceDesc->Integer.Value; |
| 515 | |
| 516 | /* Lock entire transaction if requested */ |
| 517 | |
| 518 | AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 519 | |
| 520 | /* Perform the write */ |
| 521 | |
| 522 | Status = AcpiExAccessRegion ( |
| 523 | ObjDesc, 0, (UINT64 *) Buffer, ACPI_WRITE); |
| 524 | AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 525 | return_ACPI_STATUS (Status); |
| 526 | } |
| 527 | |
| 528 | /* Get a pointer to the data to be written */ |
| 529 | |
| 530 | switch (SourceDesc->Common.Type) |
| 531 | { |
| 532 | case ACPI_TYPE_INTEGER: |
| 533 | |
| 534 | Buffer = &SourceDesc->Integer.Value; |
| 535 | Length = sizeof (SourceDesc->Integer.Value); |
| 536 | break; |
| 537 | |
| 538 | case ACPI_TYPE_BUFFER: |
| 539 | |
| 540 | Buffer = SourceDesc->Buffer.Pointer; |
| 541 | Length = SourceDesc->Buffer.Length; |
| 542 | break; |
| 543 | |
| 544 | case ACPI_TYPE_STRING: |
| 545 | |
| 546 | Buffer = SourceDesc->String.Pointer; |
| 547 | Length = SourceDesc->String.Length; |
| 548 | break; |
| 549 | |
| 550 | default: |
| 551 | |
| 552 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 553 | } |
| 554 | |
| 555 | ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, |
| 556 | "FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n" , |
| 557 | SourceDesc, AcpiUtGetTypeName (SourceDesc->Common.Type), |
| 558 | SourceDesc->Common.Type, Buffer, Length)); |
| 559 | |
| 560 | ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, |
| 561 | "FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n" , |
| 562 | ObjDesc, AcpiUtGetTypeName (ObjDesc->Common.Type), |
| 563 | ObjDesc->Common.Type, |
| 564 | ObjDesc->CommonField.BitLength, |
| 565 | ObjDesc->CommonField.StartFieldBitOffset, |
| 566 | ObjDesc->CommonField.BaseByteOffset)); |
| 567 | |
| 568 | /* Lock entire transaction if requested */ |
| 569 | |
| 570 | AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 571 | |
| 572 | /* Write to the field */ |
| 573 | |
| 574 | Status = AcpiExInsertIntoField (ObjDesc, Buffer, Length); |
| 575 | AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); |
| 576 | |
| 577 | return_ACPI_STATUS (Status); |
| 578 | } |
| 579 | |