| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: utcopy - Internal to external object translation utilities |
| 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 "acnamesp.h" |
| 47 | |
| 48 | |
| 49 | #define _COMPONENT ACPI_UTILITIES |
| 50 | ACPI_MODULE_NAME ("utcopy" ) |
| 51 | |
| 52 | /* Local prototypes */ |
| 53 | |
| 54 | static ACPI_STATUS |
| 55 | AcpiUtCopyIsimpleToEsimple ( |
| 56 | ACPI_OPERAND_OBJECT *InternalObject, |
| 57 | ACPI_OBJECT *ExternalObject, |
| 58 | UINT8 *DataSpace, |
| 59 | ACPI_SIZE *BufferSpaceUsed); |
| 60 | |
| 61 | static ACPI_STATUS |
| 62 | AcpiUtCopyIelementToIelement ( |
| 63 | UINT8 ObjectType, |
| 64 | ACPI_OPERAND_OBJECT *SourceObject, |
| 65 | ACPI_GENERIC_STATE *State, |
| 66 | void *Context); |
| 67 | |
| 68 | static ACPI_STATUS |
| 69 | AcpiUtCopyIpackageToEpackage ( |
| 70 | ACPI_OPERAND_OBJECT *InternalObject, |
| 71 | UINT8 *Buffer, |
| 72 | ACPI_SIZE *SpaceUsed); |
| 73 | |
| 74 | static ACPI_STATUS |
| 75 | AcpiUtCopyEsimpleToIsimple( |
| 76 | ACPI_OBJECT *UserObj, |
| 77 | ACPI_OPERAND_OBJECT **ReturnObj); |
| 78 | |
| 79 | static ACPI_STATUS |
| 80 | AcpiUtCopyEpackageToIpackage ( |
| 81 | ACPI_OBJECT *ExternalObject, |
| 82 | ACPI_OPERAND_OBJECT **InternalObject); |
| 83 | |
| 84 | static ACPI_STATUS |
| 85 | AcpiUtCopySimpleObject ( |
| 86 | ACPI_OPERAND_OBJECT *SourceDesc, |
| 87 | ACPI_OPERAND_OBJECT *DestDesc); |
| 88 | |
| 89 | static ACPI_STATUS |
| 90 | AcpiUtCopyIelementToEelement ( |
| 91 | UINT8 ObjectType, |
| 92 | ACPI_OPERAND_OBJECT *SourceObject, |
| 93 | ACPI_GENERIC_STATE *State, |
| 94 | void *Context); |
| 95 | |
| 96 | static ACPI_STATUS |
| 97 | AcpiUtCopyIpackageToIpackage ( |
| 98 | ACPI_OPERAND_OBJECT *SourceObj, |
| 99 | ACPI_OPERAND_OBJECT *DestObj, |
| 100 | ACPI_WALK_STATE *WalkState); |
| 101 | |
| 102 | |
| 103 | /******************************************************************************* |
| 104 | * |
| 105 | * FUNCTION: AcpiUtCopyIsimpleToEsimple |
| 106 | * |
| 107 | * PARAMETERS: InternalObject - Source object to be copied |
| 108 | * ExternalObject - Where to return the copied object |
| 109 | * DataSpace - Where object data is returned (such as |
| 110 | * buffer and string data) |
| 111 | * BufferSpaceUsed - Length of DataSpace that was used |
| 112 | * |
| 113 | * RETURN: Status |
| 114 | * |
| 115 | * DESCRIPTION: This function is called to copy a simple internal object to |
| 116 | * an external object. |
| 117 | * |
| 118 | * The DataSpace buffer is assumed to have sufficient space for |
| 119 | * the object. |
| 120 | * |
| 121 | ******************************************************************************/ |
| 122 | |
| 123 | static ACPI_STATUS |
| 124 | AcpiUtCopyIsimpleToEsimple ( |
| 125 | ACPI_OPERAND_OBJECT *InternalObject, |
| 126 | ACPI_OBJECT *ExternalObject, |
| 127 | UINT8 *DataSpace, |
| 128 | ACPI_SIZE *BufferSpaceUsed) |
| 129 | { |
| 130 | ACPI_STATUS Status = AE_OK; |
| 131 | |
| 132 | |
| 133 | ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple); |
| 134 | |
| 135 | |
| 136 | *BufferSpaceUsed = 0; |
| 137 | |
| 138 | /* |
| 139 | * Check for NULL object case (could be an uninitialized |
| 140 | * package element) |
| 141 | */ |
| 142 | if (!InternalObject) |
| 143 | { |
| 144 | return_ACPI_STATUS (AE_OK); |
| 145 | } |
| 146 | |
| 147 | /* Always clear the external object */ |
| 148 | |
| 149 | memset (ExternalObject, 0, sizeof (ACPI_OBJECT)); |
| 150 | |
| 151 | /* |
| 152 | * In general, the external object will be the same type as |
| 153 | * the internal object |
| 154 | */ |
| 155 | ExternalObject->Type = InternalObject->Common.Type; |
| 156 | |
| 157 | /* However, only a limited number of external types are supported */ |
| 158 | |
| 159 | switch (InternalObject->Common.Type) |
| 160 | { |
| 161 | case ACPI_TYPE_STRING: |
| 162 | |
| 163 | ExternalObject->String.Pointer = (char *) DataSpace; |
| 164 | ExternalObject->String.Length = InternalObject->String.Length; |
| 165 | *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD ( |
| 166 | (ACPI_SIZE) InternalObject->String.Length + 1); |
| 167 | |
| 168 | memcpy ((void *) DataSpace, |
| 169 | (void *) InternalObject->String.Pointer, |
| 170 | (ACPI_SIZE) InternalObject->String.Length + 1); |
| 171 | break; |
| 172 | |
| 173 | case ACPI_TYPE_BUFFER: |
| 174 | |
| 175 | ExternalObject->Buffer.Pointer = DataSpace; |
| 176 | ExternalObject->Buffer.Length = InternalObject->Buffer.Length; |
| 177 | *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD ( |
| 178 | InternalObject->String.Length); |
| 179 | |
| 180 | memcpy ((void *) DataSpace, |
| 181 | (void *) InternalObject->Buffer.Pointer, |
| 182 | InternalObject->Buffer.Length); |
| 183 | break; |
| 184 | |
| 185 | case ACPI_TYPE_INTEGER: |
| 186 | |
| 187 | ExternalObject->Integer.Value = InternalObject->Integer.Value; |
| 188 | break; |
| 189 | |
| 190 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 191 | |
| 192 | /* This is an object reference. */ |
| 193 | |
| 194 | switch (InternalObject->Reference.Class) |
| 195 | { |
| 196 | case ACPI_REFCLASS_NAME: |
| 197 | /* |
| 198 | * For namepath, return the object handle ("reference") |
| 199 | * We are referring to the namespace node |
| 200 | */ |
| 201 | ExternalObject->Reference.Handle = |
| 202 | InternalObject->Reference.Node; |
| 203 | ExternalObject->Reference.ActualType = |
| 204 | AcpiNsGetType (InternalObject->Reference.Node); |
| 205 | break; |
| 206 | |
| 207 | default: |
| 208 | |
| 209 | /* All other reference types are unsupported */ |
| 210 | |
| 211 | return_ACPI_STATUS (AE_TYPE); |
| 212 | } |
| 213 | break; |
| 214 | |
| 215 | case ACPI_TYPE_PROCESSOR: |
| 216 | |
| 217 | ExternalObject->Processor.ProcId = |
| 218 | InternalObject->Processor.ProcId; |
| 219 | ExternalObject->Processor.PblkAddress = |
| 220 | InternalObject->Processor.Address; |
| 221 | ExternalObject->Processor.PblkLength = |
| 222 | InternalObject->Processor.Length; |
| 223 | break; |
| 224 | |
| 225 | case ACPI_TYPE_POWER: |
| 226 | |
| 227 | ExternalObject->PowerResource.SystemLevel = |
| 228 | InternalObject->PowerResource.SystemLevel; |
| 229 | |
| 230 | ExternalObject->PowerResource.ResourceOrder = |
| 231 | InternalObject->PowerResource.ResourceOrder; |
| 232 | break; |
| 233 | |
| 234 | default: |
| 235 | /* |
| 236 | * There is no corresponding external object type |
| 237 | */ |
| 238 | ACPI_ERROR ((AE_INFO, |
| 239 | "Unsupported object type, cannot convert to external object: %s" , |
| 240 | AcpiUtGetTypeName (InternalObject->Common.Type))); |
| 241 | |
| 242 | return_ACPI_STATUS (AE_SUPPORT); |
| 243 | } |
| 244 | |
| 245 | return_ACPI_STATUS (Status); |
| 246 | } |
| 247 | |
| 248 | |
| 249 | /******************************************************************************* |
| 250 | * |
| 251 | * FUNCTION: AcpiUtCopyIelementToEelement |
| 252 | * |
| 253 | * PARAMETERS: ACPI_PKG_CALLBACK |
| 254 | * |
| 255 | * RETURN: Status |
| 256 | * |
| 257 | * DESCRIPTION: Copy one package element to another package element |
| 258 | * |
| 259 | ******************************************************************************/ |
| 260 | |
| 261 | static ACPI_STATUS |
| 262 | AcpiUtCopyIelementToEelement ( |
| 263 | UINT8 ObjectType, |
| 264 | ACPI_OPERAND_OBJECT *SourceObject, |
| 265 | ACPI_GENERIC_STATE *State, |
| 266 | void *Context) |
| 267 | { |
| 268 | ACPI_STATUS Status = AE_OK; |
| 269 | ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context; |
| 270 | ACPI_SIZE ObjectSpace; |
| 271 | UINT32 ThisIndex; |
| 272 | ACPI_OBJECT *TargetObject; |
| 273 | |
| 274 | |
| 275 | ACPI_FUNCTION_ENTRY (); |
| 276 | |
| 277 | |
| 278 | ThisIndex = State->Pkg.Index; |
| 279 | TargetObject = (ACPI_OBJECT *) &((ACPI_OBJECT *) |
| 280 | (State->Pkg.DestObject))->Package.Elements[ThisIndex]; |
| 281 | |
| 282 | switch (ObjectType) |
| 283 | { |
| 284 | case ACPI_COPY_TYPE_SIMPLE: |
| 285 | /* |
| 286 | * This is a simple or null object |
| 287 | */ |
| 288 | Status = AcpiUtCopyIsimpleToEsimple (SourceObject, |
| 289 | TargetObject, Info->FreeSpace, &ObjectSpace); |
| 290 | if (ACPI_FAILURE (Status)) |
| 291 | { |
| 292 | return (Status); |
| 293 | } |
| 294 | break; |
| 295 | |
| 296 | case ACPI_COPY_TYPE_PACKAGE: |
| 297 | /* |
| 298 | * Build the package object |
| 299 | */ |
| 300 | TargetObject->Type = ACPI_TYPE_PACKAGE; |
| 301 | TargetObject->Package.Count = SourceObject->Package.Count; |
| 302 | TargetObject->Package.Elements = |
| 303 | ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace); |
| 304 | |
| 305 | /* |
| 306 | * Pass the new package object back to the package walk routine |
| 307 | */ |
| 308 | State->Pkg.ThisTargetObj = TargetObject; |
| 309 | |
| 310 | /* |
| 311 | * Save space for the array of objects (Package elements) |
| 312 | * update the buffer length counter |
| 313 | */ |
| 314 | ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD ( |
| 315 | (ACPI_SIZE) TargetObject->Package.Count * |
| 316 | sizeof (ACPI_OBJECT)); |
| 317 | break; |
| 318 | |
| 319 | default: |
| 320 | |
| 321 | return (AE_BAD_PARAMETER); |
| 322 | } |
| 323 | |
| 324 | Info->FreeSpace += ObjectSpace; |
| 325 | Info->Length += ObjectSpace; |
| 326 | return (Status); |
| 327 | } |
| 328 | |
| 329 | |
| 330 | /******************************************************************************* |
| 331 | * |
| 332 | * FUNCTION: AcpiUtCopyIpackageToEpackage |
| 333 | * |
| 334 | * PARAMETERS: InternalObject - Pointer to the object we are returning |
| 335 | * Buffer - Where the object is returned |
| 336 | * SpaceUsed - Where the object length is returned |
| 337 | * |
| 338 | * RETURN: Status |
| 339 | * |
| 340 | * DESCRIPTION: This function is called to place a package object in a user |
| 341 | * buffer. A package object by definition contains other objects. |
| 342 | * |
| 343 | * The buffer is assumed to have sufficient space for the object. |
| 344 | * The caller must have verified the buffer length needed using |
| 345 | * the AcpiUtGetObjectSize function before calling this function. |
| 346 | * |
| 347 | ******************************************************************************/ |
| 348 | |
| 349 | static ACPI_STATUS |
| 350 | AcpiUtCopyIpackageToEpackage ( |
| 351 | ACPI_OPERAND_OBJECT *InternalObject, |
| 352 | UINT8 *Buffer, |
| 353 | ACPI_SIZE *SpaceUsed) |
| 354 | { |
| 355 | ACPI_OBJECT *ExternalObject; |
| 356 | ACPI_STATUS Status; |
| 357 | ACPI_PKG_INFO Info; |
| 358 | |
| 359 | |
| 360 | ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage); |
| 361 | |
| 362 | |
| 363 | /* |
| 364 | * First package at head of the buffer |
| 365 | */ |
| 366 | ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer); |
| 367 | |
| 368 | /* |
| 369 | * Free space begins right after the first package |
| 370 | */ |
| 371 | Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); |
| 372 | Info.FreeSpace = Buffer + |
| 373 | ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); |
| 374 | Info.ObjectSpace = 0; |
| 375 | Info.NumPackages = 1; |
| 376 | |
| 377 | ExternalObject->Type = InternalObject->Common.Type; |
| 378 | ExternalObject->Package.Count = InternalObject->Package.Count; |
| 379 | ExternalObject->Package.Elements = |
| 380 | ACPI_CAST_PTR (ACPI_OBJECT, Info.FreeSpace); |
| 381 | |
| 382 | /* |
| 383 | * Leave room for an array of ACPI_OBJECTS in the buffer |
| 384 | * and move the free space past it |
| 385 | */ |
| 386 | Info.Length += (ACPI_SIZE) ExternalObject->Package.Count * |
| 387 | ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); |
| 388 | Info.FreeSpace += ExternalObject->Package.Count * |
| 389 | ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); |
| 390 | |
| 391 | Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject, |
| 392 | AcpiUtCopyIelementToEelement, &Info); |
| 393 | |
| 394 | *SpaceUsed = Info.Length; |
| 395 | return_ACPI_STATUS (Status); |
| 396 | } |
| 397 | |
| 398 | |
| 399 | /******************************************************************************* |
| 400 | * |
| 401 | * FUNCTION: AcpiUtCopyIobjectToEobject |
| 402 | * |
| 403 | * PARAMETERS: InternalObject - The internal object to be converted |
| 404 | * RetBuffer - Where the object is returned |
| 405 | * |
| 406 | * RETURN: Status |
| 407 | * |
| 408 | * DESCRIPTION: This function is called to build an API object to be returned |
| 409 | * to the caller. |
| 410 | * |
| 411 | ******************************************************************************/ |
| 412 | |
| 413 | ACPI_STATUS |
| 414 | AcpiUtCopyIobjectToEobject ( |
| 415 | ACPI_OPERAND_OBJECT *InternalObject, |
| 416 | ACPI_BUFFER *RetBuffer) |
| 417 | { |
| 418 | ACPI_STATUS Status; |
| 419 | |
| 420 | |
| 421 | ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject); |
| 422 | |
| 423 | |
| 424 | if (InternalObject->Common.Type == ACPI_TYPE_PACKAGE) |
| 425 | { |
| 426 | /* |
| 427 | * Package object: Copy all subobjects (including |
| 428 | * nested packages) |
| 429 | */ |
| 430 | Status = AcpiUtCopyIpackageToEpackage (InternalObject, |
| 431 | RetBuffer->Pointer, &RetBuffer->Length); |
| 432 | } |
| 433 | else |
| 434 | { |
| 435 | /* |
| 436 | * Build a simple object (no nested objects) |
| 437 | */ |
| 438 | Status = AcpiUtCopyIsimpleToEsimple (InternalObject, |
| 439 | ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer), |
| 440 | ACPI_ADD_PTR (UINT8, RetBuffer->Pointer, |
| 441 | ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))), |
| 442 | &RetBuffer->Length); |
| 443 | /* |
| 444 | * build simple does not include the object size in the length |
| 445 | * so we add it in here |
| 446 | */ |
| 447 | RetBuffer->Length += sizeof (ACPI_OBJECT); |
| 448 | } |
| 449 | |
| 450 | return_ACPI_STATUS (Status); |
| 451 | } |
| 452 | |
| 453 | |
| 454 | /******************************************************************************* |
| 455 | * |
| 456 | * FUNCTION: AcpiUtCopyEsimpleToIsimple |
| 457 | * |
| 458 | * PARAMETERS: ExternalObject - The external object to be converted |
| 459 | * RetInternalObject - Where the internal object is returned |
| 460 | * |
| 461 | * RETURN: Status |
| 462 | * |
| 463 | * DESCRIPTION: This function copies an external object to an internal one. |
| 464 | * NOTE: Pointers can be copied, we don't need to copy data. |
| 465 | * (The pointers have to be valid in our address space no matter |
| 466 | * what we do with them!) |
| 467 | * |
| 468 | ******************************************************************************/ |
| 469 | |
| 470 | static ACPI_STATUS |
| 471 | AcpiUtCopyEsimpleToIsimple ( |
| 472 | ACPI_OBJECT *ExternalObject, |
| 473 | ACPI_OPERAND_OBJECT **RetInternalObject) |
| 474 | { |
| 475 | ACPI_OPERAND_OBJECT *InternalObject; |
| 476 | |
| 477 | |
| 478 | ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple); |
| 479 | |
| 480 | |
| 481 | /* |
| 482 | * Simple types supported are: String, Buffer, Integer |
| 483 | */ |
| 484 | switch (ExternalObject->Type) |
| 485 | { |
| 486 | case ACPI_TYPE_STRING: |
| 487 | case ACPI_TYPE_BUFFER: |
| 488 | case ACPI_TYPE_INTEGER: |
| 489 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 490 | |
| 491 | InternalObject = AcpiUtCreateInternalObject ( |
| 492 | (UINT8) ExternalObject->Type); |
| 493 | if (!InternalObject) |
| 494 | { |
| 495 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 496 | } |
| 497 | break; |
| 498 | |
| 499 | case ACPI_TYPE_ANY: /* This is the case for a NULL object */ |
| 500 | |
| 501 | *RetInternalObject = NULL; |
| 502 | return_ACPI_STATUS (AE_OK); |
| 503 | |
| 504 | default: |
| 505 | |
| 506 | /* All other types are not supported */ |
| 507 | |
| 508 | ACPI_ERROR ((AE_INFO, |
| 509 | "Unsupported object type, cannot convert to internal object: %s" , |
| 510 | AcpiUtGetTypeName (ExternalObject->Type))); |
| 511 | |
| 512 | return_ACPI_STATUS (AE_SUPPORT); |
| 513 | } |
| 514 | |
| 515 | |
| 516 | /* Must COPY string and buffer contents */ |
| 517 | |
| 518 | switch (ExternalObject->Type) |
| 519 | { |
| 520 | case ACPI_TYPE_STRING: |
| 521 | |
| 522 | InternalObject->String.Pointer = |
| 523 | ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) |
| 524 | ExternalObject->String.Length + 1); |
| 525 | |
| 526 | if (!InternalObject->String.Pointer) |
| 527 | { |
| 528 | goto ErrorExit; |
| 529 | } |
| 530 | |
| 531 | memcpy (InternalObject->String.Pointer, |
| 532 | ExternalObject->String.Pointer, |
| 533 | ExternalObject->String.Length); |
| 534 | |
| 535 | InternalObject->String.Length = ExternalObject->String.Length; |
| 536 | break; |
| 537 | |
| 538 | case ACPI_TYPE_BUFFER: |
| 539 | |
| 540 | InternalObject->Buffer.Pointer = |
| 541 | ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length); |
| 542 | if (!InternalObject->Buffer.Pointer) |
| 543 | { |
| 544 | goto ErrorExit; |
| 545 | } |
| 546 | |
| 547 | memcpy (InternalObject->Buffer.Pointer, |
| 548 | ExternalObject->Buffer.Pointer, |
| 549 | ExternalObject->Buffer.Length); |
| 550 | |
| 551 | InternalObject->Buffer.Length = ExternalObject->Buffer.Length; |
| 552 | |
| 553 | /* Mark buffer data valid */ |
| 554 | |
| 555 | InternalObject->Buffer.Flags |= AOPOBJ_DATA_VALID; |
| 556 | break; |
| 557 | |
| 558 | case ACPI_TYPE_INTEGER: |
| 559 | |
| 560 | InternalObject->Integer.Value = ExternalObject->Integer.Value; |
| 561 | break; |
| 562 | |
| 563 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 564 | |
| 565 | /* An incoming reference is defined to be a namespace node */ |
| 566 | |
| 567 | InternalObject->Reference.Class = ACPI_REFCLASS_REFOF; |
| 568 | InternalObject->Reference.Object = ExternalObject->Reference.Handle; |
| 569 | break; |
| 570 | |
| 571 | default: |
| 572 | |
| 573 | /* Other types can't get here */ |
| 574 | |
| 575 | break; |
| 576 | } |
| 577 | |
| 578 | *RetInternalObject = InternalObject; |
| 579 | return_ACPI_STATUS (AE_OK); |
| 580 | |
| 581 | |
| 582 | ErrorExit: |
| 583 | AcpiUtRemoveReference (InternalObject); |
| 584 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 585 | } |
| 586 | |
| 587 | |
| 588 | /******************************************************************************* |
| 589 | * |
| 590 | * FUNCTION: AcpiUtCopyEpackageToIpackage |
| 591 | * |
| 592 | * PARAMETERS: ExternalObject - The external object to be converted |
| 593 | * InternalObject - Where the internal object is returned |
| 594 | * |
| 595 | * RETURN: Status |
| 596 | * |
| 597 | * DESCRIPTION: Copy an external package object to an internal package. |
| 598 | * Handles nested packages. |
| 599 | * |
| 600 | ******************************************************************************/ |
| 601 | |
| 602 | static ACPI_STATUS |
| 603 | AcpiUtCopyEpackageToIpackage ( |
| 604 | ACPI_OBJECT *ExternalObject, |
| 605 | ACPI_OPERAND_OBJECT **InternalObject) |
| 606 | { |
| 607 | ACPI_STATUS Status = AE_OK; |
| 608 | ACPI_OPERAND_OBJECT *PackageObject; |
| 609 | ACPI_OPERAND_OBJECT **PackageElements; |
| 610 | UINT32 i; |
| 611 | |
| 612 | |
| 613 | ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage); |
| 614 | |
| 615 | |
| 616 | /* Create the package object */ |
| 617 | |
| 618 | PackageObject = AcpiUtCreatePackageObject ( |
| 619 | ExternalObject->Package.Count); |
| 620 | if (!PackageObject) |
| 621 | { |
| 622 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 623 | } |
| 624 | |
| 625 | PackageElements = PackageObject->Package.Elements; |
| 626 | |
| 627 | /* |
| 628 | * Recursive implementation. Probably ok, since nested external |
| 629 | * packages as parameters should be very rare. |
| 630 | */ |
| 631 | for (i = 0; i < ExternalObject->Package.Count; i++) |
| 632 | { |
| 633 | Status = AcpiUtCopyEobjectToIobject ( |
| 634 | &ExternalObject->Package.Elements[i], |
| 635 | &PackageElements[i]); |
| 636 | if (ACPI_FAILURE (Status)) |
| 637 | { |
| 638 | /* Truncate package and delete it */ |
| 639 | |
| 640 | PackageObject->Package.Count = i; |
| 641 | PackageElements[i] = NULL; |
| 642 | AcpiUtRemoveReference (PackageObject); |
| 643 | return_ACPI_STATUS (Status); |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | /* Mark package data valid */ |
| 648 | |
| 649 | PackageObject->Package.Flags |= AOPOBJ_DATA_VALID; |
| 650 | |
| 651 | *InternalObject = PackageObject; |
| 652 | return_ACPI_STATUS (Status); |
| 653 | } |
| 654 | |
| 655 | |
| 656 | /******************************************************************************* |
| 657 | * |
| 658 | * FUNCTION: AcpiUtCopyEobjectToIobject |
| 659 | * |
| 660 | * PARAMETERS: ExternalObject - The external object to be converted |
| 661 | * InternalObject - Where the internal object is returned |
| 662 | * |
| 663 | * RETURN: Status |
| 664 | * |
| 665 | * DESCRIPTION: Converts an external object to an internal object. |
| 666 | * |
| 667 | ******************************************************************************/ |
| 668 | |
| 669 | ACPI_STATUS |
| 670 | AcpiUtCopyEobjectToIobject ( |
| 671 | ACPI_OBJECT *ExternalObject, |
| 672 | ACPI_OPERAND_OBJECT **InternalObject) |
| 673 | { |
| 674 | ACPI_STATUS Status; |
| 675 | |
| 676 | |
| 677 | ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject); |
| 678 | |
| 679 | |
| 680 | if (ExternalObject->Type == ACPI_TYPE_PACKAGE) |
| 681 | { |
| 682 | Status = AcpiUtCopyEpackageToIpackage ( |
| 683 | ExternalObject, InternalObject); |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | /* |
| 688 | * Build a simple object (no nested objects) |
| 689 | */ |
| 690 | Status = AcpiUtCopyEsimpleToIsimple (ExternalObject, |
| 691 | InternalObject); |
| 692 | } |
| 693 | |
| 694 | return_ACPI_STATUS (Status); |
| 695 | } |
| 696 | |
| 697 | |
| 698 | /******************************************************************************* |
| 699 | * |
| 700 | * FUNCTION: AcpiUtCopySimpleObject |
| 701 | * |
| 702 | * PARAMETERS: SourceDesc - The internal object to be copied |
| 703 | * DestDesc - New target object |
| 704 | * |
| 705 | * RETURN: Status |
| 706 | * |
| 707 | * DESCRIPTION: Simple copy of one internal object to another. Reference count |
| 708 | * of the destination object is preserved. |
| 709 | * |
| 710 | ******************************************************************************/ |
| 711 | |
| 712 | static ACPI_STATUS |
| 713 | AcpiUtCopySimpleObject ( |
| 714 | ACPI_OPERAND_OBJECT *SourceDesc, |
| 715 | ACPI_OPERAND_OBJECT *DestDesc) |
| 716 | { |
| 717 | UINT16 ReferenceCount; |
| 718 | ACPI_OPERAND_OBJECT *NextObject; |
| 719 | ACPI_STATUS Status; |
| 720 | ACPI_SIZE CopySize; |
| 721 | |
| 722 | |
| 723 | /* Save fields from destination that we don't want to overwrite */ |
| 724 | |
| 725 | ReferenceCount = DestDesc->Common.ReferenceCount; |
| 726 | NextObject = DestDesc->Common.NextObject; |
| 727 | |
| 728 | /* |
| 729 | * Copy the entire source object over the destination object. |
| 730 | * Note: Source can be either an operand object or namespace node. |
| 731 | */ |
| 732 | CopySize = sizeof (ACPI_OPERAND_OBJECT); |
| 733 | if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_NAMED) |
| 734 | { |
| 735 | CopySize = sizeof (ACPI_NAMESPACE_NODE); |
| 736 | } |
| 737 | |
| 738 | memcpy (ACPI_CAST_PTR (char, DestDesc), |
| 739 | ACPI_CAST_PTR (char, SourceDesc), CopySize); |
| 740 | |
| 741 | /* Restore the saved fields */ |
| 742 | |
| 743 | DestDesc->Common.ReferenceCount = ReferenceCount; |
| 744 | DestDesc->Common.NextObject = NextObject; |
| 745 | |
| 746 | /* New object is not static, regardless of source */ |
| 747 | |
| 748 | DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER; |
| 749 | |
| 750 | /* Handle the objects with extra data */ |
| 751 | |
| 752 | switch (DestDesc->Common.Type) |
| 753 | { |
| 754 | case ACPI_TYPE_BUFFER: |
| 755 | /* |
| 756 | * Allocate and copy the actual buffer if and only if: |
| 757 | * 1) There is a valid buffer pointer |
| 758 | * 2) The buffer has a length > 0 |
| 759 | */ |
| 760 | if ((SourceDesc->Buffer.Pointer) && |
| 761 | (SourceDesc->Buffer.Length)) |
| 762 | { |
| 763 | DestDesc->Buffer.Pointer = |
| 764 | ACPI_ALLOCATE (SourceDesc->Buffer.Length); |
| 765 | if (!DestDesc->Buffer.Pointer) |
| 766 | { |
| 767 | return (AE_NO_MEMORY); |
| 768 | } |
| 769 | |
| 770 | /* Copy the actual buffer data */ |
| 771 | |
| 772 | memcpy (DestDesc->Buffer.Pointer, |
| 773 | SourceDesc->Buffer.Pointer, SourceDesc->Buffer.Length); |
| 774 | } |
| 775 | break; |
| 776 | |
| 777 | case ACPI_TYPE_STRING: |
| 778 | /* |
| 779 | * Allocate and copy the actual string if and only if: |
| 780 | * 1) There is a valid string pointer |
| 781 | * (Pointer to a NULL string is allowed) |
| 782 | */ |
| 783 | if (SourceDesc->String.Pointer) |
| 784 | { |
| 785 | DestDesc->String.Pointer = |
| 786 | ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1); |
| 787 | if (!DestDesc->String.Pointer) |
| 788 | { |
| 789 | return (AE_NO_MEMORY); |
| 790 | } |
| 791 | |
| 792 | /* Copy the actual string data */ |
| 793 | |
| 794 | memcpy (DestDesc->String.Pointer, SourceDesc->String.Pointer, |
| 795 | (ACPI_SIZE) SourceDesc->String.Length + 1); |
| 796 | } |
| 797 | break; |
| 798 | |
| 799 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 800 | /* |
| 801 | * We copied the reference object, so we now must add a reference |
| 802 | * to the object pointed to by the reference |
| 803 | * |
| 804 | * DDBHandle reference (from Load/LoadTable) is a special reference, |
| 805 | * it does not have a Reference.Object, so does not need to |
| 806 | * increase the reference count |
| 807 | */ |
| 808 | if (SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE) |
| 809 | { |
| 810 | break; |
| 811 | } |
| 812 | |
| 813 | AcpiUtAddReference (SourceDesc->Reference.Object); |
| 814 | break; |
| 815 | |
| 816 | case ACPI_TYPE_REGION: |
| 817 | /* |
| 818 | * We copied the Region Handler, so we now must add a reference |
| 819 | */ |
| 820 | if (DestDesc->Region.Handler) |
| 821 | { |
| 822 | AcpiUtAddReference (DestDesc->Region.Handler); |
| 823 | } |
| 824 | break; |
| 825 | |
| 826 | /* |
| 827 | * For Mutex and Event objects, we cannot simply copy the underlying |
| 828 | * OS object. We must create a new one. |
| 829 | */ |
| 830 | case ACPI_TYPE_MUTEX: |
| 831 | |
| 832 | Status = AcpiOsCreateMutex (&DestDesc->Mutex.OsMutex); |
| 833 | if (ACPI_FAILURE (Status)) |
| 834 | { |
| 835 | return (Status); |
| 836 | } |
| 837 | break; |
| 838 | |
| 839 | case ACPI_TYPE_EVENT: |
| 840 | |
| 841 | Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, |
| 842 | &DestDesc->Event.OsSemaphore); |
| 843 | if (ACPI_FAILURE (Status)) |
| 844 | { |
| 845 | return (Status); |
| 846 | } |
| 847 | break; |
| 848 | |
| 849 | default: |
| 850 | |
| 851 | /* Nothing to do for other simple objects */ |
| 852 | |
| 853 | break; |
| 854 | } |
| 855 | |
| 856 | return (AE_OK); |
| 857 | } |
| 858 | |
| 859 | |
| 860 | /******************************************************************************* |
| 861 | * |
| 862 | * FUNCTION: AcpiUtCopyIelementToIelement |
| 863 | * |
| 864 | * PARAMETERS: ACPI_PKG_CALLBACK |
| 865 | * |
| 866 | * RETURN: Status |
| 867 | * |
| 868 | * DESCRIPTION: Copy one package element to another package element |
| 869 | * |
| 870 | ******************************************************************************/ |
| 871 | |
| 872 | static ACPI_STATUS |
| 873 | AcpiUtCopyIelementToIelement ( |
| 874 | UINT8 ObjectType, |
| 875 | ACPI_OPERAND_OBJECT *SourceObject, |
| 876 | ACPI_GENERIC_STATE *State, |
| 877 | void *Context) |
| 878 | { |
| 879 | ACPI_STATUS Status = AE_OK; |
| 880 | UINT32 ThisIndex; |
| 881 | ACPI_OPERAND_OBJECT **ThisTargetPtr; |
| 882 | ACPI_OPERAND_OBJECT *TargetObject; |
| 883 | |
| 884 | |
| 885 | ACPI_FUNCTION_ENTRY (); |
| 886 | |
| 887 | |
| 888 | ThisIndex = State->Pkg.Index; |
| 889 | ThisTargetPtr = (ACPI_OPERAND_OBJECT **) |
| 890 | &State->Pkg.DestObject->Package.Elements[ThisIndex]; |
| 891 | |
| 892 | switch (ObjectType) |
| 893 | { |
| 894 | case ACPI_COPY_TYPE_SIMPLE: |
| 895 | |
| 896 | /* A null source object indicates a (legal) null package element */ |
| 897 | |
| 898 | if (SourceObject) |
| 899 | { |
| 900 | /* |
| 901 | * This is a simple object, just copy it |
| 902 | */ |
| 903 | TargetObject = AcpiUtCreateInternalObject ( |
| 904 | SourceObject->Common.Type); |
| 905 | if (!TargetObject) |
| 906 | { |
| 907 | return (AE_NO_MEMORY); |
| 908 | } |
| 909 | |
| 910 | Status = AcpiUtCopySimpleObject (SourceObject, TargetObject); |
| 911 | if (ACPI_FAILURE (Status)) |
| 912 | { |
| 913 | goto ErrorExit; |
| 914 | } |
| 915 | |
| 916 | *ThisTargetPtr = TargetObject; |
| 917 | } |
| 918 | else |
| 919 | { |
| 920 | /* Pass through a null element */ |
| 921 | |
| 922 | *ThisTargetPtr = NULL; |
| 923 | } |
| 924 | break; |
| 925 | |
| 926 | case ACPI_COPY_TYPE_PACKAGE: |
| 927 | /* |
| 928 | * This object is a package - go down another nesting level |
| 929 | * Create and build the package object |
| 930 | */ |
| 931 | TargetObject = AcpiUtCreatePackageObject ( |
| 932 | SourceObject->Package.Count); |
| 933 | if (!TargetObject) |
| 934 | { |
| 935 | return (AE_NO_MEMORY); |
| 936 | } |
| 937 | |
| 938 | TargetObject->Common.Flags = SourceObject->Common.Flags; |
| 939 | |
| 940 | /* Pass the new package object back to the package walk routine */ |
| 941 | |
| 942 | State->Pkg.ThisTargetObj = TargetObject; |
| 943 | |
| 944 | /* Store the object pointer in the parent package object */ |
| 945 | |
| 946 | *ThisTargetPtr = TargetObject; |
| 947 | break; |
| 948 | |
| 949 | default: |
| 950 | |
| 951 | return (AE_BAD_PARAMETER); |
| 952 | } |
| 953 | |
| 954 | return (Status); |
| 955 | |
| 956 | ErrorExit: |
| 957 | AcpiUtRemoveReference (TargetObject); |
| 958 | return (Status); |
| 959 | } |
| 960 | |
| 961 | |
| 962 | /******************************************************************************* |
| 963 | * |
| 964 | * FUNCTION: AcpiUtCopyIpackageToIpackage |
| 965 | * |
| 966 | * PARAMETERS: SourceObj - Pointer to the source package object |
| 967 | * DestObj - Where the internal object is returned |
| 968 | * WalkState - Current Walk state descriptor |
| 969 | * |
| 970 | * RETURN: Status |
| 971 | * |
| 972 | * DESCRIPTION: This function is called to copy an internal package object |
| 973 | * into another internal package object. |
| 974 | * |
| 975 | ******************************************************************************/ |
| 976 | |
| 977 | static ACPI_STATUS |
| 978 | AcpiUtCopyIpackageToIpackage ( |
| 979 | ACPI_OPERAND_OBJECT *SourceObj, |
| 980 | ACPI_OPERAND_OBJECT *DestObj, |
| 981 | ACPI_WALK_STATE *WalkState) |
| 982 | { |
| 983 | ACPI_STATUS Status = AE_OK; |
| 984 | |
| 985 | |
| 986 | ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage); |
| 987 | |
| 988 | |
| 989 | DestObj->Common.Type = SourceObj->Common.Type; |
| 990 | DestObj->Common.Flags = SourceObj->Common.Flags; |
| 991 | DestObj->Package.Count = SourceObj->Package.Count; |
| 992 | |
| 993 | /* |
| 994 | * Create the object array and walk the source package tree |
| 995 | */ |
| 996 | DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED ( |
| 997 | ((ACPI_SIZE) SourceObj->Package.Count + 1) * |
| 998 | sizeof (void *)); |
| 999 | if (!DestObj->Package.Elements) |
| 1000 | { |
| 1001 | ACPI_ERROR ((AE_INFO, "Package allocation failure" )); |
| 1002 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * Copy the package element-by-element by walking the package "tree". |
| 1007 | * This handles nested packages of arbitrary depth. |
| 1008 | */ |
| 1009 | Status = AcpiUtWalkPackageTree (SourceObj, DestObj, |
| 1010 | AcpiUtCopyIelementToIelement, WalkState); |
| 1011 | if (ACPI_FAILURE (Status)) |
| 1012 | { |
| 1013 | /* On failure, delete the destination package object */ |
| 1014 | |
| 1015 | AcpiUtRemoveReference (DestObj); |
| 1016 | } |
| 1017 | |
| 1018 | return_ACPI_STATUS (Status); |
| 1019 | } |
| 1020 | |
| 1021 | |
| 1022 | /******************************************************************************* |
| 1023 | * |
| 1024 | * FUNCTION: AcpiUtCopyIobjectToIobject |
| 1025 | * |
| 1026 | * PARAMETERS: SourceDesc - The internal object to be copied |
| 1027 | * DestDesc - Where the copied object is returned |
| 1028 | * WalkState - Current walk state |
| 1029 | * |
| 1030 | * RETURN: Status |
| 1031 | * |
| 1032 | * DESCRIPTION: Copy an internal object to a new internal object |
| 1033 | * |
| 1034 | ******************************************************************************/ |
| 1035 | |
| 1036 | ACPI_STATUS |
| 1037 | AcpiUtCopyIobjectToIobject ( |
| 1038 | ACPI_OPERAND_OBJECT *SourceDesc, |
| 1039 | ACPI_OPERAND_OBJECT **DestDesc, |
| 1040 | ACPI_WALK_STATE *WalkState) |
| 1041 | { |
| 1042 | ACPI_STATUS Status = AE_OK; |
| 1043 | |
| 1044 | |
| 1045 | ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject); |
| 1046 | |
| 1047 | |
| 1048 | /* Create the top level object */ |
| 1049 | |
| 1050 | *DestDesc = AcpiUtCreateInternalObject (SourceDesc->Common.Type); |
| 1051 | if (!*DestDesc) |
| 1052 | { |
| 1053 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 1054 | } |
| 1055 | |
| 1056 | /* Copy the object and possible subobjects */ |
| 1057 | |
| 1058 | if (SourceDesc->Common.Type == ACPI_TYPE_PACKAGE) |
| 1059 | { |
| 1060 | Status = AcpiUtCopyIpackageToIpackage ( |
| 1061 | SourceDesc, *DestDesc, WalkState); |
| 1062 | } |
| 1063 | else |
| 1064 | { |
| 1065 | Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc); |
| 1066 | } |
| 1067 | |
| 1068 | /* Delete the allocated object if copy failed */ |
| 1069 | |
| 1070 | if (ACPI_FAILURE (Status)) |
| 1071 | { |
| 1072 | AcpiUtRemoveReference (*DestDesc); |
| 1073 | } |
| 1074 | |
| 1075 | return_ACPI_STATUS (Status); |
| 1076 | } |
| 1077 | |