reactos/drivers/bus/acpi/acpica/utilities/utcopy.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utcopy - Internal to external object translation utilities
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2009, 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 #define __UTCOPY_C__
 117
 118 #include "acpi.h"
 119 #include "accommon.h"
 120 #include "acnamesp.h"
 121
 122
 123 #define _COMPONENT          ACPI_UTILITIES
 124         ACPI_MODULE_NAME    ("utcopy")
 125
 126 /* Local prototypes */
 127
 128 static ACPI_STATUS
 129 AcpiUtCopyIsimpleToEsimple (
 130     ACPI_OPERAND_OBJECT     *InternalObject,
 131     ACPI_OBJECT             *ExternalObject,
 132     UINT8                   *DataSpace,
 133     ACPI_SIZE               *BufferSpaceUsed);
 134
 135 static ACPI_STATUS
 136 AcpiUtCopyIelementToIelement (
 137     UINT8                   ObjectType,
 138     ACPI_OPERAND_OBJECT     *SourceObject,
 139     ACPI_GENERIC_STATE      *State,
 140     void                    *Context);
 141
 142 static ACPI_STATUS
 143 AcpiUtCopyIpackageToEpackage (
 144     ACPI_OPERAND_OBJECT     *InternalObject,
 145     UINT8                   *Buffer,
 146     ACPI_SIZE               *SpaceUsed);
 147
 148 static ACPI_STATUS
 149 AcpiUtCopyEsimpleToIsimple(
 150     ACPI_OBJECT             *UserObj,
 151     ACPI_OPERAND_OBJECT     **ReturnObj);
 152
 153 static ACPI_STATUS
 154 AcpiUtCopyEpackageToIpackage (
 155     ACPI_OBJECT             *ExternalObject,
 156     ACPI_OPERAND_OBJECT     **InternalObject);
 157
 158 static ACPI_STATUS
 159 AcpiUtCopySimpleObject (
 160     ACPI_OPERAND_OBJECT     *SourceDesc,
 161     ACPI_OPERAND_OBJECT     *DestDesc);
 162
 163 static ACPI_STATUS
 164 AcpiUtCopyIelementToEelement (
 165     UINT8                   ObjectType,
 166     ACPI_OPERAND_OBJECT     *SourceObject,
 167     ACPI_GENERIC_STATE      *State,
 168     void                    *Context);
 169
 170 static ACPI_STATUS
 171 AcpiUtCopyIpackageToIpackage (
 172     ACPI_OPERAND_OBJECT     *SourceObj,
 173     ACPI_OPERAND_OBJECT     *DestObj,
 174     ACPI_WALK_STATE         *WalkState);
 175
 176
 177 /*******************************************************************************
 178  *
 179  * FUNCTION:    AcpiUtCopyIsimpleToEsimple
 180  *
 181  * PARAMETERS:  InternalObject      - Source object to be copied
 182  *              ExternalObject      - Where to return the copied object
 183  *              DataSpace           - Where object data is returned (such as
 184  *                                    buffer and string data)
 185  *              BufferSpaceUsed     - Length of DataSpace that was used
 186  *
 187  * RETURN:      Status
 188  *
 189  * DESCRIPTION: This function is called to copy a simple internal object to
 190  *              an external object.
 191  *
 192  *              The DataSpace buffer is assumed to have sufficient space for
 193  *              the object.
 194  *
 195  ******************************************************************************/
 196
 197 static ACPI_STATUS
 198 AcpiUtCopyIsimpleToEsimple (
 199     ACPI_OPERAND_OBJECT     *InternalObject,
 200     ACPI_OBJECT             *ExternalObject,
 201     UINT8                   *DataSpace,
 202     ACPI_SIZE               *BufferSpaceUsed)
 203 {
 204     ACPI_STATUS             Status = AE_OK;
 205
 206
 207     ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple);
 208
 209
 210     *BufferSpaceUsed = 0;
 211
 212     /*
 213      * Check for NULL object case (could be an uninitialized
 214      * package element)
 215      */
 216     if (!InternalObject)
 217     {
 218         return_ACPI_STATUS (AE_OK);
 219     }
 220
 221     /* Always clear the external object */
 222
 223     ACPI_MEMSET (ExternalObject, 0, sizeof (ACPI_OBJECT));
 224
 225     /*
 226      * In general, the external object will be the same type as
 227      * the internal object
 228      */
 229     ExternalObject->Type = InternalObject->Common.Type;
 230
 231     /* However, only a limited number of external types are supported */
 232
 233     switch (InternalObject->Common.Type)
 234     {
 235     case ACPI_TYPE_STRING:
 236
 237         ExternalObject->String.Pointer = (char *) DataSpace;
 238         ExternalObject->String.Length  = InternalObject->String.Length;
 239         *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
 240                             (ACPI_SIZE) InternalObject->String.Length + 1);
 241
 242         ACPI_MEMCPY ((void *) DataSpace,
 243             (void *) InternalObject->String.Pointer,
 244             (ACPI_SIZE) InternalObject->String.Length + 1);
 245         break;
 246
 247
 248     case ACPI_TYPE_BUFFER:
 249
 250         ExternalObject->Buffer.Pointer = DataSpace;
 251         ExternalObject->Buffer.Length  = InternalObject->Buffer.Length;
 252         *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
 253                             InternalObject->String.Length);
 254
 255         ACPI_MEMCPY ((void *) DataSpace,
 256             (void *) InternalObject->Buffer.Pointer,
 257             InternalObject->Buffer.Length);
 258         break;
 259
 260
 261     case ACPI_TYPE_INTEGER:
 262
 263         ExternalObject->Integer.Value = InternalObject->Integer.Value;
 264         break;
 265
 266
 267     case ACPI_TYPE_LOCAL_REFERENCE:
 268
 269         /* This is an object reference. */
 270
 271         switch (InternalObject->Reference.Class)
 272         {
 273         case ACPI_REFCLASS_NAME:
 274
 275             /*
 276              * For namepath, return the object handle ("reference")
 277              * We are referring to the namespace node
 278              */
 279             ExternalObject->Reference.Handle =
 280                 InternalObject->Reference.Node;
 281             ExternalObject->Reference.ActualType =
 282                 AcpiNsGetType (InternalObject->Reference.Node);
 283             break;
 284
 285         default:
 286
 287             /* All other reference types are unsupported */
 288
 289             return_ACPI_STATUS (AE_TYPE);
 290         }
 291         break;
 292
 293
 294     case ACPI_TYPE_PROCESSOR:
 295
 296         ExternalObject->Processor.ProcId =
 297             InternalObject->Processor.ProcId;
 298         ExternalObject->Processor.PblkAddress =
 299             InternalObject->Processor.Address;
 300         ExternalObject->Processor.PblkLength =
 301             InternalObject->Processor.Length;
 302         break;
 303
 304
 305     case ACPI_TYPE_POWER:
 306
 307         ExternalObject->PowerResource.SystemLevel =
 308             InternalObject->PowerResource.SystemLevel;
 309
 310         ExternalObject->PowerResource.ResourceOrder =
 311             InternalObject->PowerResource.ResourceOrder;
 312         break;
 313
 314
 315     default:
 316         /*
 317          * There is no corresponding external object type
 318          */
 319         ACPI_ERROR ((AE_INFO,
 320             "Unsupported object type, cannot convert to external object: %s",
 321             AcpiUtGetTypeName (InternalObject->Common.Type)));
 322
 323         return_ACPI_STATUS (AE_SUPPORT);
 324     }
 325
 326     return_ACPI_STATUS (Status);
 327 }
 328
 329
 330 /*******************************************************************************
 331  *
 332  * FUNCTION:    AcpiUtCopyIelementToEelement
 333  *
 334  * PARAMETERS:  ACPI_PKG_CALLBACK
 335  *
 336  * RETURN:      Status
 337  *
 338  * DESCRIPTION: Copy one package element to another package element
 339  *
 340  ******************************************************************************/
 341
 342 static ACPI_STATUS
 343 AcpiUtCopyIelementToEelement (
 344     UINT8                   ObjectType,
 345     ACPI_OPERAND_OBJECT     *SourceObject,
 346     ACPI_GENERIC_STATE      *State,
 347     void                    *Context)
 348 {
 349     ACPI_STATUS             Status = AE_OK;
 350     ACPI_PKG_INFO           *Info = (ACPI_PKG_INFO *) Context;
 351     ACPI_SIZE               ObjectSpace;
 352     UINT32                  ThisIndex;
 353     ACPI_OBJECT             *TargetObject;
 354
 355
 356     ACPI_FUNCTION_ENTRY ();
 357
 358
 359     ThisIndex    = State->Pkg.Index;
 360     TargetObject = (ACPI_OBJECT *)
 361         &((ACPI_OBJECT *)(State->Pkg.DestObject))->Package.Elements[ThisIndex];
 362
 363     switch (ObjectType)
 364     {
 365     case ACPI_COPY_TYPE_SIMPLE:
 366
 367         /*
 368          * This is a simple or null object
 369          */
 370         Status = AcpiUtCopyIsimpleToEsimple (SourceObject,
 371                         TargetObject, Info->FreeSpace, &ObjectSpace);
 372         if (ACPI_FAILURE (Status))
 373         {
 374             return (Status);
 375         }
 376         break;
 377
 378
 379     case ACPI_COPY_TYPE_PACKAGE:
 380
 381         /*
 382          * Build the package object
 383          */
 384         TargetObject->Type              = ACPI_TYPE_PACKAGE;
 385         TargetObject->Package.Count     = SourceObject->Package.Count;
 386         TargetObject->Package.Elements  =
 387             ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace);
 388
 389         /*
 390          * Pass the new package object back to the package walk routine
 391          */
 392         State->Pkg.ThisTargetObj = TargetObject;
 393
 394         /*
 395          * Save space for the array of objects (Package elements)
 396          * update the buffer length counter
 397          */
 398         ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD (
 399                             (ACPI_SIZE) TargetObject->Package.Count *
 400                             sizeof (ACPI_OBJECT));
 401         break;
 402
 403
 404     default:
 405         return (AE_BAD_PARAMETER);
 406     }
 407
 408     Info->FreeSpace   += ObjectSpace;
 409     Info->Length      += ObjectSpace;
 410     return (Status);
 411 }
 412
 413
 414 /*******************************************************************************
 415  *
 416  * FUNCTION:    AcpiUtCopyIpackageToEpackage
 417  *
 418  * PARAMETERS:  InternalObject      - Pointer to the object we are returning
 419  *              Buffer              - Where the object is returned
 420  *              SpaceUsed           - Where the object length is returned
 421  *
 422  * RETURN:      Status
 423  *
 424  * DESCRIPTION: This function is called to place a package object in a user
 425  *              buffer. A package object by definition contains other objects.
 426  *
 427  *              The buffer is assumed to have sufficient space for the object.
 428  *              The caller must have verified the buffer length needed using
 429  *              the AcpiUtGetObjectSize function before calling this function.
 430  *
 431  ******************************************************************************/
 432
 433 static ACPI_STATUS
 434 AcpiUtCopyIpackageToEpackage (
 435     ACPI_OPERAND_OBJECT     *InternalObject,
 436     UINT8                   *Buffer,
 437     ACPI_SIZE               *SpaceUsed)
 438 {
 439     ACPI_OBJECT             *ExternalObject;
 440     ACPI_STATUS             Status;
 441     ACPI_PKG_INFO           Info;
 442
 443
 444     ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage);
 445
 446
 447     /*
 448      * First package at head of the buffer
 449      */
 450     ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer);
 451
 452     /*
 453      * Free space begins right after the first package
 454      */
 455     Info.Length      = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
 456     Info.FreeSpace   = Buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (
 457                                     sizeof (ACPI_OBJECT));
 458     Info.ObjectSpace = 0;
 459     Info.NumPackages = 1;
 460
 461     ExternalObject->Type             = InternalObject->Common.Type;
 462     ExternalObject->Package.Count    = InternalObject->Package.Count;
 463     ExternalObject->Package.Elements = ACPI_CAST_PTR (ACPI_OBJECT,
 464                                             Info.FreeSpace);
 465
 466     /*
 467      * Leave room for an array of ACPI_OBJECTS in the buffer
 468      * and move the free space past it
 469      */
 470     Info.Length    += (ACPI_SIZE) ExternalObject->Package.Count *
 471                             ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
 472     Info.FreeSpace += ExternalObject->Package.Count *
 473                             ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
 474
 475     Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject,
 476                 AcpiUtCopyIelementToEelement, &Info);
 477
 478     *SpaceUsed = Info.Length;
 479     return_ACPI_STATUS (Status);
 480 }
 481
 482
 483 /*******************************************************************************
 484  *
 485  * FUNCTION:    AcpiUtCopyIobjectToEobject
 486  *
 487  * PARAMETERS:  InternalObject      - The internal object to be converted
 488  *              RetBuffer           - Where the object is returned
 489  *
 490  * RETURN:      Status
 491  *
 492  * DESCRIPTION: This function is called to build an API object to be returned
 493  *              to the caller.
 494  *
 495  ******************************************************************************/
 496
 497 ACPI_STATUS
 498 AcpiUtCopyIobjectToEobject (
 499     ACPI_OPERAND_OBJECT     *InternalObject,
 500     ACPI_BUFFER             *RetBuffer)
 501 {
 502     ACPI_STATUS             Status;
 503
 504
 505     ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject);
 506
 507
 508     if (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)
 509     {
 510         /*
 511          * Package object:  Copy all subobjects (including
 512          * nested packages)
 513          */
 514         Status = AcpiUtCopyIpackageToEpackage (InternalObject,
 515                         RetBuffer->Pointer, &RetBuffer->Length);
 516     }
 517     else
 518     {
 519         /*
 520          * Build a simple object (no nested objects)
 521          */
 522         Status = AcpiUtCopyIsimpleToEsimple (InternalObject,
 523                     ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer),
 524                     ACPI_ADD_PTR (UINT8, RetBuffer->Pointer,
 525                         ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))),
 526                     &RetBuffer->Length);
 527         /*
 528          * build simple does not include the object size in the length
 529          * so we add it in here
 530          */
 531         RetBuffer->Length += sizeof (ACPI_OBJECT);
 532     }
 533
 534     return_ACPI_STATUS (Status);
 535 }
 536
 537
 538 /*******************************************************************************
 539  *
 540  * FUNCTION:    AcpiUtCopyEsimpleToIsimple
 541  *
 542  * PARAMETERS:  ExternalObject      - The external object to be converted
 543  *              RetInternalObject   - Where the internal object is returned
 544  *
 545  * RETURN:      Status
 546  *
 547  * DESCRIPTION: This function copies an external object to an internal one.
 548  *              NOTE: Pointers can be copied, we don't need to copy data.
 549  *              (The pointers have to be valid in our address space no matter
 550  *              what we do with them!)
 551  *
 552  ******************************************************************************/
 553
 554 static ACPI_STATUS
 555 AcpiUtCopyEsimpleToIsimple (
 556     ACPI_OBJECT             *ExternalObject,
 557     ACPI_OPERAND_OBJECT     **RetInternalObject)
 558 {
 559     ACPI_OPERAND_OBJECT     *InternalObject;
 560
 561
 562     ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple);
 563
 564
 565     /*
 566      * Simple types supported are: String, Buffer, Integer
 567      */
 568     switch (ExternalObject->Type)
 569     {
 570     case ACPI_TYPE_STRING:
 571     case ACPI_TYPE_BUFFER:
 572     case ACPI_TYPE_INTEGER:
 573     case ACPI_TYPE_LOCAL_REFERENCE:
 574
 575         InternalObject = AcpiUtCreateInternalObject (
 576                             (UINT8) ExternalObject->Type);
 577         if (!InternalObject)
 578         {
 579             return_ACPI_STATUS (AE_NO_MEMORY);
 580         }
 581         break;
 582
 583     case ACPI_TYPE_ANY: /* This is the case for a NULL object */
 584
 585         *RetInternalObject = NULL;
 586         return_ACPI_STATUS (AE_OK);
 587
 588     default:
 589         /* All other types are not supported */
 590
 591         ACPI_ERROR ((AE_INFO,
 592             "Unsupported object type, cannot convert to internal object: %s",
 593             AcpiUtGetTypeName (ExternalObject->Type)));
 594
 595         return_ACPI_STATUS (AE_SUPPORT);
 596     }
 597
 598
 599     /* Must COPY string and buffer contents */
 600
 601     switch (ExternalObject->Type)
 602     {
 603     case ACPI_TYPE_STRING:
 604
 605         InternalObject->String.Pointer =
 606             ACPI_ALLOCATE_ZEROED ((ACPI_SIZE)
 607                 ExternalObject->String.Length + 1);
 608
 609         if (!InternalObject->String.Pointer)
 610         {
 611             goto ErrorExit;
 612         }
 613
 614         ACPI_MEMCPY (InternalObject->String.Pointer,
 615                      ExternalObject->String.Pointer,
 616                      ExternalObject->String.Length);
 617
 618         InternalObject->String.Length  = ExternalObject->String.Length;
 619         break;
 620
 621
 622     case ACPI_TYPE_BUFFER:
 623
 624         InternalObject->Buffer.Pointer =
 625             ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length);
 626         if (!InternalObject->Buffer.Pointer)
 627         {
 628             goto ErrorExit;
 629         }
 630
 631         ACPI_MEMCPY (InternalObject->Buffer.Pointer,
 632                      ExternalObject->Buffer.Pointer,
 633                      ExternalObject->Buffer.Length);
 634
 635         InternalObject->Buffer.Length  = ExternalObject->Buffer.Length;
 636
 637         /* Mark buffer data valid */
 638
 639         InternalObject->Buffer.Flags |= AOPOBJ_DATA_VALID;
 640         break;
 641
 642
 643     case ACPI_TYPE_INTEGER:
 644
 645         InternalObject->Integer.Value   = ExternalObject->Integer.Value;
 646         break;
 647
 648     case ACPI_TYPE_LOCAL_REFERENCE:
 649
 650         /* TBD: should validate incoming handle */
 651
 652         InternalObject->Reference.Class = ACPI_REFCLASS_NAME;
 653         InternalObject->Reference.Node = ExternalObject->Reference.Handle;
 654         break;
 655
 656     default:
 657         /* Other types can't get here */
 658         break;
 659     }
 660
 661     *RetInternalObject = InternalObject;
 662     return_ACPI_STATUS (AE_OK);
 663
 664
 665 ErrorExit:
 666     AcpiUtRemoveReference (InternalObject);
 667     return_ACPI_STATUS (AE_NO_MEMORY);
 668 }
 669
 670
 671 /*******************************************************************************
 672  *
 673  * FUNCTION:    AcpiUtCopyEpackageToIpackage
 674  *
 675  * PARAMETERS:  ExternalObject      - The external object to be converted
 676  *              InternalObject      - Where the internal object is returned
 677  *
 678  * RETURN:      Status
 679  *
 680  * DESCRIPTION: Copy an external package object to an internal package.
 681  *              Handles nested packages.
 682  *
 683  ******************************************************************************/
 684
 685 static ACPI_STATUS
 686 AcpiUtCopyEpackageToIpackage (
 687     ACPI_OBJECT             *ExternalObject,
 688     ACPI_OPERAND_OBJECT     **InternalObject)
 689 {
 690     ACPI_STATUS             Status = AE_OK;
 691     ACPI_OPERAND_OBJECT     *PackageObject;
 692     ACPI_OPERAND_OBJECT     **PackageElements;
 693     UINT32                  i;
 694
 695
 696     ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage);
 697
 698
 699     /* Create the package object */
 700
 701     PackageObject = AcpiUtCreatePackageObject (ExternalObject->Package.Count);
 702     if (!PackageObject)
 703     {
 704         return_ACPI_STATUS (AE_NO_MEMORY);
 705     }
 706
 707     PackageElements = PackageObject->Package.Elements;
 708
 709     /*
 710      * Recursive implementation. Probably ok, since nested external packages
 711      * as parameters should be very rare.
 712      */
 713     for (i = 0; i < ExternalObject->Package.Count; i++)
 714     {
 715         Status = AcpiUtCopyEobjectToIobject (
 716                     &ExternalObject->Package.Elements[i],
 717                     &PackageElements[i]);
 718         if (ACPI_FAILURE (Status))
 719         {
 720             /* Truncate package and delete it */
 721
 722             PackageObject->Package.Count = i;
 723             PackageElements[i] = NULL;
 724             AcpiUtRemoveReference (PackageObject);
 725             return_ACPI_STATUS (Status);
 726         }
 727     }
 728
 729     /* Mark package data valid */
 730
 731     PackageObject->Package.Flags |= AOPOBJ_DATA_VALID;
 732
 733     *InternalObject = PackageObject;
 734     return_ACPI_STATUS (Status);
 735 }
 736
 737
 738 /*******************************************************************************
 739  *
 740  * FUNCTION:    AcpiUtCopyEobjectToIobject
 741  *
 742  * PARAMETERS:  ExternalObject      - The external object to be converted
 743  *              InternalObject      - Where the internal object is returned
 744  *
 745  * RETURN:      Status
 746  *
 747  * DESCRIPTION: Converts an external object to an internal object.
 748  *
 749  ******************************************************************************/
 750
 751 ACPI_STATUS
 752 AcpiUtCopyEobjectToIobject (
 753     ACPI_OBJECT             *ExternalObject,
 754     ACPI_OPERAND_OBJECT     **InternalObject)
 755 {
 756     ACPI_STATUS             Status;
 757
 758
 759     ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject);
 760
 761
 762     if (ExternalObject->Type == ACPI_TYPE_PACKAGE)
 763     {
 764         Status = AcpiUtCopyEpackageToIpackage (ExternalObject, InternalObject);
 765     }
 766     else
 767     {
 768         /*
 769          * Build a simple object (no nested objects)
 770          */
 771         Status = AcpiUtCopyEsimpleToIsimple (ExternalObject, InternalObject);
 772     }
 773
 774     return_ACPI_STATUS (Status);
 775 }
 776
 777
 778 /*******************************************************************************
 779  *
 780  * FUNCTION:    AcpiUtCopySimpleObject
 781  *
 782  * PARAMETERS:  SourceDesc          - The internal object to be copied
 783  *              DestDesc            - New target object
 784  *
 785  * RETURN:      Status
 786  *
 787  * DESCRIPTION: Simple copy of one internal object to another. Reference count
 788  *              of the destination object is preserved.
 789  *
 790  ******************************************************************************/
 791
 792 static ACPI_STATUS
 793 AcpiUtCopySimpleObject (
 794     ACPI_OPERAND_OBJECT     *SourceDesc,
 795     ACPI_OPERAND_OBJECT     *DestDesc)
 796 {
 797     UINT16                  ReferenceCount;
 798     ACPI_OPERAND_OBJECT     *NextObject;
 799     ACPI_STATUS             Status;
 800
 801
 802     /* Save fields from destination that we don't want to overwrite */
 803
 804     ReferenceCount = DestDesc->Common.ReferenceCount;
 805     NextObject = DestDesc->Common.NextObject;
 806
 807     /* Copy the entire source object over the destination object*/
 808
 809     ACPI_MEMCPY ((char *) DestDesc, (char *) SourceDesc,
 810                     sizeof (ACPI_OPERAND_OBJECT));
 811
 812     /* Restore the saved fields */
 813
 814     DestDesc->Common.ReferenceCount = ReferenceCount;
 815     DestDesc->Common.NextObject = NextObject;
 816
 817     /* New object is not static, regardless of source */
 818
 819     DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER;
 820
 821     /* Handle the objects with extra data */
 822
 823     switch (DestDesc->Common.Type)
 824     {
 825     case ACPI_TYPE_BUFFER:
 826         /*
 827          * Allocate and copy the actual buffer if and only if:
 828          * 1) There is a valid buffer pointer
 829          * 2) The buffer has a length > 0
 830          */
 831         if ((SourceDesc->Buffer.Pointer) &&
 832             (SourceDesc->Buffer.Length))
 833         {
 834             DestDesc->Buffer.Pointer =
 835                 ACPI_ALLOCATE (SourceDesc->Buffer.Length);
 836             if (!DestDesc->Buffer.Pointer)
 837             {
 838                 return (AE_NO_MEMORY);
 839             }
 840
 841             /* Copy the actual buffer data */
 842
 843             ACPI_MEMCPY (DestDesc->Buffer.Pointer,
 844                     SourceDesc->Buffer.Pointer,
 845                     SourceDesc->Buffer.Length);
 846         }
 847         break;
 848
 849     case ACPI_TYPE_STRING:
 850         /*
 851          * Allocate and copy the actual string if and only if:
 852          * 1) There is a valid string pointer
 853          * (Pointer to a NULL string is allowed)
 854          */
 855         if (SourceDesc->String.Pointer)
 856         {
 857             DestDesc->String.Pointer =
 858                 ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1);
 859             if (!DestDesc->String.Pointer)
 860             {
 861                 return (AE_NO_MEMORY);
 862             }
 863
 864             /* Copy the actual string data */
 865
 866             ACPI_MEMCPY (DestDesc->String.Pointer, SourceDesc->String.Pointer,
 867                          (ACPI_SIZE) SourceDesc->String.Length + 1);
 868         }
 869         break;
 870
 871     case ACPI_TYPE_LOCAL_REFERENCE:
 872         /*
 873          * We copied the reference object, so we now must add a reference
 874          * to the object pointed to by the reference
 875          *
 876          * DDBHandle reference (from Load/LoadTable) is a special reference,
 877          * it does not have a Reference.Object, so does not need to
 878          * increase the reference count
 879          */
 880         if (SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE)
 881         {
 882             break;
 883         }
 884
 885         AcpiUtAddReference (SourceDesc->Reference.Object);
 886         break;
 887
 888     case ACPI_TYPE_REGION:
 889         /*
 890          * We copied the Region Handler, so we now must add a reference
 891          */
 892         if (DestDesc->Region.Handler)
 893         {
 894             AcpiUtAddReference (DestDesc->Region.Handler);
 895         }
 896         break;
 897
 898     /*
 899      * For Mutex and Event objects, we cannot simply copy the underlying
 900      * OS object. We must create a new one.
 901      */
 902     case ACPI_TYPE_MUTEX:
 903
 904         Status = AcpiOsCreateMutex (&DestDesc->Mutex.OsMutex);
 905         if (ACPI_FAILURE (Status))
 906         {
 907             return (Status);
 908         }
 909         break;
 910
 911     case ACPI_TYPE_EVENT:
 912
 913         Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
 914                     &DestDesc->Event.OsSemaphore);
 915         if (ACPI_FAILURE (Status))
 916         {
 917             return (Status);
 918         }
 919         break;
 920
 921     default:
 922         /* Nothing to do for other simple objects */
 923         break;
 924     }
 925
 926     return (AE_OK);
 927 }
 928
 929
 930 /*******************************************************************************
 931  *
 932  * FUNCTION:    AcpiUtCopyIelementToIelement
 933  *
 934  * PARAMETERS:  ACPI_PKG_CALLBACK
 935  *
 936  * RETURN:      Status
 937  *
 938  * DESCRIPTION: Copy one package element to another package element
 939  *
 940  ******************************************************************************/
 941
 942 static ACPI_STATUS
 943 AcpiUtCopyIelementToIelement (
 944     UINT8                   ObjectType,
 945     ACPI_OPERAND_OBJECT     *SourceObject,
 946     ACPI_GENERIC_STATE      *State,
 947     void                    *Context)
 948 {
 949     ACPI_STATUS             Status = AE_OK;
 950     UINT32                  ThisIndex;
 951     ACPI_OPERAND_OBJECT     **ThisTargetPtr;
 952     ACPI_OPERAND_OBJECT     *TargetObject;
 953
 954
 955     ACPI_FUNCTION_ENTRY ();
 956
 957
 958     ThisIndex     = State->Pkg.Index;
 959     ThisTargetPtr = (ACPI_OPERAND_OBJECT **)
 960                         &State->Pkg.DestObject->Package.Elements[ThisIndex];
 961
 962     switch (ObjectType)
 963     {
 964     case ACPI_COPY_TYPE_SIMPLE:
 965
 966         /* A null source object indicates a (legal) null package element */
 967
 968         if (SourceObject)
 969         {
 970             /*
 971              * This is a simple object, just copy it
 972              */
 973             TargetObject = AcpiUtCreateInternalObject (
 974                                 SourceObject->Common.Type);
 975             if (!TargetObject)
 976             {
 977                 return (AE_NO_MEMORY);
 978             }
 979
 980             Status = AcpiUtCopySimpleObject (SourceObject, TargetObject);
 981             if (ACPI_FAILURE (Status))
 982             {
 983                 goto ErrorExit;
 984             }
 985
 986             *ThisTargetPtr = TargetObject;
 987         }
 988         else
 989         {
 990             /* Pass through a null element */
 991
 992             *ThisTargetPtr = NULL;
 993         }
 994         break;
 995
 996
 997     case ACPI_COPY_TYPE_PACKAGE:
 998
 999         /*
1000          * This object is a package - go down another nesting level
1001          * Create and build the package object
1002          */
1003         TargetObject = AcpiUtCreatePackageObject (SourceObject->Package.Count);
1004         if (!TargetObject)
1005         {
1006             return (AE_NO_MEMORY);
1007         }
1008
1009         TargetObject->Common.Flags = SourceObject->Common.Flags;
1010
1011         /* Pass the new package object back to the package walk routine */
1012
1013         State->Pkg.ThisTargetObj = TargetObject;
1014
1015         /* Store the object pointer in the parent package object */
1016
1017         *ThisTargetPtr = TargetObject;
1018         break;
1019
1020
1021     default:
1022         return (AE_BAD_PARAMETER);
1023     }
1024
1025     return (Status);
1026
1027 ErrorExit:
1028     AcpiUtRemoveReference (TargetObject);
1029     return (Status);
1030 }
1031
1032
1033 /*******************************************************************************
1034  *
1035  * FUNCTION:    AcpiUtCopyIpackageToIpackage
1036  *
1037  * PARAMETERS:  SourceObj       - Pointer to the source package object
1038  *              DestObj         - Where the internal object is returned
1039  *              WalkState       - Current Walk state descriptor
1040  *
1041  * RETURN:      Status
1042  *
1043  * DESCRIPTION: This function is called to copy an internal package object
1044  *              into another internal package object.
1045  *
1046  ******************************************************************************/
1047
1048 static ACPI_STATUS
1049 AcpiUtCopyIpackageToIpackage (
1050     ACPI_OPERAND_OBJECT     *SourceObj,
1051     ACPI_OPERAND_OBJECT     *DestObj,
1052     ACPI_WALK_STATE         *WalkState)
1053 {
1054     ACPI_STATUS             Status = AE_OK;
1055
1056
1057     ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage);
1058
1059
1060     DestObj->Common.Type    = SourceObj->Common.Type;
1061     DestObj->Common.Flags   = SourceObj->Common.Flags;
1062     DestObj->Package.Count  = SourceObj->Package.Count;
1063
1064     /*
1065      * Create the object array and walk the source package tree
1066      */
1067     DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED (
1068                                     ((ACPI_SIZE) SourceObj->Package.Count + 1) *
1069                                     sizeof (void *));
1070     if (!DestObj->Package.Elements)
1071     {
1072         ACPI_ERROR ((AE_INFO, "Package allocation failure"));
1073         return_ACPI_STATUS (AE_NO_MEMORY);
1074     }
1075
1076     /*
1077      * Copy the package element-by-element by walking the package "tree".
1078      * This handles nested packages of arbitrary depth.
1079      */
1080     Status = AcpiUtWalkPackageTree (SourceObj, DestObj,
1081                 AcpiUtCopyIelementToIelement, WalkState);
1082     if (ACPI_FAILURE (Status))
1083     {
1084         /* On failure, delete the destination package object */
1085
1086         AcpiUtRemoveReference (DestObj);
1087     }
1088
1089     return_ACPI_STATUS (Status);
1090 }
1091
1092
1093 /*******************************************************************************
1094  *
1095  * FUNCTION:    AcpiUtCopyIobjectToIobject
1096  *
1097  * PARAMETERS:  SourceDesc          - The internal object to be copied
1098  *              DestDesc            - Where the copied object is returned
1099  *              WalkState           - Current walk state
1100  *
1101  * RETURN:      Status
1102  *
1103  * DESCRIPTION: Copy an internal object to a new internal object
1104  *
1105  ******************************************************************************/
1106
1107 ACPI_STATUS
1108 AcpiUtCopyIobjectToIobject (
1109     ACPI_OPERAND_OBJECT     *SourceDesc,
1110     ACPI_OPERAND_OBJECT     **DestDesc,
1111     ACPI_WALK_STATE         *WalkState)
1112 {
1113     ACPI_STATUS             Status = AE_OK;
1114
1115
1116     ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject);
1117
1118
1119     /* Create the top level object */
1120
1121     *DestDesc = AcpiUtCreateInternalObject (SourceDesc->Common.Type);
1122     if (!*DestDesc)
1123     {
1124         return_ACPI_STATUS (AE_NO_MEMORY);
1125     }
1126
1127     /* Copy the object and possible subobjects */
1128
1129     if (SourceDesc->Common.Type == ACPI_TYPE_PACKAGE)
1130     {
1131         Status = AcpiUtCopyIpackageToIpackage (SourceDesc, *DestDesc,
1132                         WalkState);
1133     }
1134     else
1135     {
1136         Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc);
1137     }
1138
1139     return_ACPI_STATUS (Status);
1140 }
1141
1142