xref: /freebsd/sys/contrib/dev/acpica/components/utilities/utcopy.c (revision 722b16673c40aedf280895f2f2f676bb494518d7)
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 - 2023, 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  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include <contrib/dev/acpica/include/acpi.h>
153 #include <contrib/dev/acpica/include/accommon.h>
154 #include <contrib/dev/acpica/include/acnamesp.h>
155 
156 
157 #define _COMPONENT          ACPI_UTILITIES
158         ACPI_MODULE_NAME    ("utcopy")
159 
160 /* Local prototypes */
161 
162 static ACPI_STATUS
163 AcpiUtCopyIsimpleToEsimple (
164     ACPI_OPERAND_OBJECT     *InternalObject,
165     ACPI_OBJECT             *ExternalObject,
166     UINT8                   *DataSpace,
167     ACPI_SIZE               *BufferSpaceUsed);
168 
169 static ACPI_STATUS
170 AcpiUtCopyIelementToIelement (
171     UINT8                   ObjectType,
172     ACPI_OPERAND_OBJECT     *SourceObject,
173     ACPI_GENERIC_STATE      *State,
174     void                    *Context);
175 
176 static ACPI_STATUS
177 AcpiUtCopyIpackageToEpackage (
178     ACPI_OPERAND_OBJECT     *InternalObject,
179     UINT8                   *Buffer,
180     ACPI_SIZE               *SpaceUsed);
181 
182 static ACPI_STATUS
183 AcpiUtCopyEsimpleToIsimple(
184     ACPI_OBJECT             *UserObj,
185     ACPI_OPERAND_OBJECT     **ReturnObj);
186 
187 static ACPI_STATUS
188 AcpiUtCopyEpackageToIpackage (
189     ACPI_OBJECT             *ExternalObject,
190     ACPI_OPERAND_OBJECT     **InternalObject);
191 
192 static ACPI_STATUS
193 AcpiUtCopySimpleObject (
194     ACPI_OPERAND_OBJECT     *SourceDesc,
195     ACPI_OPERAND_OBJECT     *DestDesc);
196 
197 static ACPI_STATUS
198 AcpiUtCopyIelementToEelement (
199     UINT8                   ObjectType,
200     ACPI_OPERAND_OBJECT     *SourceObject,
201     ACPI_GENERIC_STATE      *State,
202     void                    *Context);
203 
204 static ACPI_STATUS
205 AcpiUtCopyIpackageToIpackage (
206     ACPI_OPERAND_OBJECT     *SourceObj,
207     ACPI_OPERAND_OBJECT     *DestObj,
208     ACPI_WALK_STATE         *WalkState);
209 
210 
211 /*******************************************************************************
212  *
213  * FUNCTION:    AcpiUtCopyIsimpleToEsimple
214  *
215  * PARAMETERS:  InternalObject      - Source object to be copied
216  *              ExternalObject      - Where to return the copied object
217  *              DataSpace           - Where object data is returned (such as
218  *                                    buffer and string data)
219  *              BufferSpaceUsed     - Length of DataSpace that was used
220  *
221  * RETURN:      Status
222  *
223  * DESCRIPTION: This function is called to copy a simple internal object to
224  *              an external object.
225  *
226  *              The DataSpace buffer is assumed to have sufficient space for
227  *              the object.
228  *
229  ******************************************************************************/
230 
231 static ACPI_STATUS
AcpiUtCopyIsimpleToEsimple(ACPI_OPERAND_OBJECT * InternalObject,ACPI_OBJECT * ExternalObject,UINT8 * DataSpace,ACPI_SIZE * BufferSpaceUsed)232 AcpiUtCopyIsimpleToEsimple (
233     ACPI_OPERAND_OBJECT     *InternalObject,
234     ACPI_OBJECT             *ExternalObject,
235     UINT8                   *DataSpace,
236     ACPI_SIZE               *BufferSpaceUsed)
237 {
238     ACPI_STATUS             Status = AE_OK;
239 
240 
241     ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple);
242 
243 
244     *BufferSpaceUsed = 0;
245 
246     /*
247      * Check for NULL object case (could be an uninitialized
248      * package element)
249      */
250     if (!InternalObject)
251     {
252         return_ACPI_STATUS (AE_OK);
253     }
254 
255     /* Always clear the external object */
256 
257     memset (ExternalObject, 0, sizeof (ACPI_OBJECT));
258 
259     /*
260      * In general, the external object will be the same type as
261      * the internal object
262      */
263     ExternalObject->Type = InternalObject->Common.Type;
264 
265     /* However, only a limited number of external types are supported */
266 
267     switch (InternalObject->Common.Type)
268     {
269     case ACPI_TYPE_STRING:
270 
271         ExternalObject->String.Pointer = (char *) DataSpace;
272         ExternalObject->String.Length  = InternalObject->String.Length;
273         *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
274             (ACPI_SIZE) InternalObject->String.Length + 1);
275 
276         memcpy ((void *) DataSpace,
277             (void *) InternalObject->String.Pointer,
278             (ACPI_SIZE) InternalObject->String.Length + 1);
279         break;
280 
281     case ACPI_TYPE_BUFFER:
282 
283         ExternalObject->Buffer.Pointer = DataSpace;
284         ExternalObject->Buffer.Length  = InternalObject->Buffer.Length;
285         *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
286             InternalObject->String.Length);
287 
288         memcpy ((void *) DataSpace,
289             (void *) InternalObject->Buffer.Pointer,
290             InternalObject->Buffer.Length);
291         break;
292 
293     case ACPI_TYPE_INTEGER:
294 
295         ExternalObject->Integer.Value = InternalObject->Integer.Value;
296         break;
297 
298     case ACPI_TYPE_LOCAL_REFERENCE:
299 
300         /* This is an object reference. */
301 
302         switch (InternalObject->Reference.Class)
303         {
304         case ACPI_REFCLASS_NAME:
305             /*
306              * For namepath, return the object handle ("reference")
307              * We are referring to the namespace node
308              */
309             ExternalObject->Reference.Handle =
310                 InternalObject->Reference.Node;
311             ExternalObject->Reference.ActualType =
312                 AcpiNsGetType (InternalObject->Reference.Node);
313             break;
314 
315         default:
316 
317             /* All other reference types are unsupported */
318 
319             return_ACPI_STATUS (AE_TYPE);
320         }
321         break;
322 
323     case ACPI_TYPE_PROCESSOR:
324 
325         ExternalObject->Processor.ProcId =
326             InternalObject->Processor.ProcId;
327         ExternalObject->Processor.PblkAddress =
328             InternalObject->Processor.Address;
329         ExternalObject->Processor.PblkLength =
330             InternalObject->Processor.Length;
331         break;
332 
333     case ACPI_TYPE_POWER:
334 
335         ExternalObject->PowerResource.SystemLevel =
336             InternalObject->PowerResource.SystemLevel;
337 
338         ExternalObject->PowerResource.ResourceOrder =
339             InternalObject->PowerResource.ResourceOrder;
340         break;
341 
342     default:
343         /*
344          * There is no corresponding external object type
345          */
346         ACPI_ERROR ((AE_INFO,
347             "Unsupported object type, cannot convert to external object: %s",
348             AcpiUtGetTypeName (InternalObject->Common.Type)));
349 
350         return_ACPI_STATUS (AE_SUPPORT);
351     }
352 
353     return_ACPI_STATUS (Status);
354 }
355 
356 
357 /*******************************************************************************
358  *
359  * FUNCTION:    AcpiUtCopyIelementToEelement
360  *
361  * PARAMETERS:  ACPI_PKG_CALLBACK
362  *
363  * RETURN:      Status
364  *
365  * DESCRIPTION: Copy one package element to another package element
366  *
367  ******************************************************************************/
368 
369 static ACPI_STATUS
AcpiUtCopyIelementToEelement(UINT8 ObjectType,ACPI_OPERAND_OBJECT * SourceObject,ACPI_GENERIC_STATE * State,void * Context)370 AcpiUtCopyIelementToEelement (
371     UINT8                   ObjectType,
372     ACPI_OPERAND_OBJECT     *SourceObject,
373     ACPI_GENERIC_STATE      *State,
374     void                    *Context)
375 {
376     ACPI_STATUS             Status = AE_OK;
377     ACPI_PKG_INFO           *Info = (ACPI_PKG_INFO *) Context;
378     ACPI_SIZE               ObjectSpace;
379     UINT32                  ThisIndex;
380     ACPI_OBJECT             *TargetObject;
381 
382 
383     ACPI_FUNCTION_ENTRY ();
384 
385 
386     ThisIndex = State->Pkg.Index;
387     TargetObject = (ACPI_OBJECT *) &((ACPI_OBJECT *)
388         (State->Pkg.DestObject))->Package.Elements[ThisIndex];
389 
390     switch (ObjectType)
391     {
392     case ACPI_COPY_TYPE_SIMPLE:
393         /*
394          * This is a simple or null object
395          */
396         Status = AcpiUtCopyIsimpleToEsimple (SourceObject,
397             TargetObject, Info->FreeSpace, &ObjectSpace);
398         if (ACPI_FAILURE (Status))
399         {
400             return (Status);
401         }
402         break;
403 
404     case ACPI_COPY_TYPE_PACKAGE:
405         /*
406          * Build the package object
407          */
408         TargetObject->Type = ACPI_TYPE_PACKAGE;
409         TargetObject->Package.Count = SourceObject->Package.Count;
410         TargetObject->Package.Elements =
411             ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace);
412 
413         /*
414          * Pass the new package object back to the package walk routine
415          */
416         State->Pkg.ThisTargetObj = TargetObject;
417 
418         /*
419          * Save space for the array of objects (Package elements)
420          * update the buffer length counter
421          */
422         ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD (
423             (ACPI_SIZE) TargetObject->Package.Count *
424             sizeof (ACPI_OBJECT));
425         break;
426 
427     default:
428 
429         return (AE_BAD_PARAMETER);
430     }
431 
432     Info->FreeSpace += ObjectSpace;
433     Info->Length += ObjectSpace;
434     return (Status);
435 }
436 
437 
438 /*******************************************************************************
439  *
440  * FUNCTION:    AcpiUtCopyIpackageToEpackage
441  *
442  * PARAMETERS:  InternalObject      - Pointer to the object we are returning
443  *              Buffer              - Where the object is returned
444  *              SpaceUsed           - Where the object length is returned
445  *
446  * RETURN:      Status
447  *
448  * DESCRIPTION: This function is called to place a package object in a user
449  *              buffer. A package object by definition contains other objects.
450  *
451  *              The buffer is assumed to have sufficient space for the object.
452  *              The caller must have verified the buffer length needed using
453  *              the AcpiUtGetObjectSize function before calling this function.
454  *
455  ******************************************************************************/
456 
457 static ACPI_STATUS
AcpiUtCopyIpackageToEpackage(ACPI_OPERAND_OBJECT * InternalObject,UINT8 * Buffer,ACPI_SIZE * SpaceUsed)458 AcpiUtCopyIpackageToEpackage (
459     ACPI_OPERAND_OBJECT     *InternalObject,
460     UINT8                   *Buffer,
461     ACPI_SIZE               *SpaceUsed)
462 {
463     ACPI_OBJECT             *ExternalObject;
464     ACPI_STATUS             Status;
465     ACPI_PKG_INFO           Info;
466 
467 
468     ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage);
469 
470 
471     /*
472      * First package at head of the buffer
473      */
474     ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer);
475 
476     /*
477      * Free space begins right after the first package
478      */
479     Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
480     Info.FreeSpace = Buffer +
481         ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
482     Info.ObjectSpace = 0;
483     Info.NumPackages = 1;
484 
485     ExternalObject->Type = InternalObject->Common.Type;
486     ExternalObject->Package.Count = InternalObject->Package.Count;
487     ExternalObject->Package.Elements =
488         ACPI_CAST_PTR (ACPI_OBJECT, Info.FreeSpace);
489 
490     /*
491      * Leave room for an array of ACPI_OBJECTS in the buffer
492      * and move the free space past it
493      */
494     Info.Length += (ACPI_SIZE) ExternalObject->Package.Count *
495         ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
496     Info.FreeSpace += ExternalObject->Package.Count *
497         ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
498 
499     Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject,
500         AcpiUtCopyIelementToEelement, &Info);
501 
502     *SpaceUsed = Info.Length;
503     return_ACPI_STATUS (Status);
504 }
505 
506 
507 /*******************************************************************************
508  *
509  * FUNCTION:    AcpiUtCopyIobjectToEobject
510  *
511  * PARAMETERS:  InternalObject      - The internal object to be converted
512  *              RetBuffer           - Where the object is returned
513  *
514  * RETURN:      Status
515  *
516  * DESCRIPTION: This function is called to build an API object to be returned
517  *              to the caller.
518  *
519  ******************************************************************************/
520 
521 ACPI_STATUS
AcpiUtCopyIobjectToEobject(ACPI_OPERAND_OBJECT * InternalObject,ACPI_BUFFER * RetBuffer)522 AcpiUtCopyIobjectToEobject (
523     ACPI_OPERAND_OBJECT     *InternalObject,
524     ACPI_BUFFER             *RetBuffer)
525 {
526     ACPI_STATUS             Status;
527 
528 
529     ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject);
530 
531 
532     if (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)
533     {
534         /*
535          * Package object:  Copy all subobjects (including
536          * nested packages)
537          */
538         Status = AcpiUtCopyIpackageToEpackage (InternalObject,
539             RetBuffer->Pointer, &RetBuffer->Length);
540     }
541     else
542     {
543         /*
544          * Build a simple object (no nested objects)
545          */
546         Status = AcpiUtCopyIsimpleToEsimple (InternalObject,
547             ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer),
548             ACPI_ADD_PTR (UINT8, RetBuffer->Pointer,
549                 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))),
550             &RetBuffer->Length);
551         /*
552          * build simple does not include the object size in the length
553          * so we add it in here
554          */
555         RetBuffer->Length += sizeof (ACPI_OBJECT);
556     }
557 
558     return_ACPI_STATUS (Status);
559 }
560 
561 
562 /*******************************************************************************
563  *
564  * FUNCTION:    AcpiUtCopyEsimpleToIsimple
565  *
566  * PARAMETERS:  ExternalObject      - The external object to be converted
567  *              RetInternalObject   - Where the internal object is returned
568  *
569  * RETURN:      Status
570  *
571  * DESCRIPTION: This function copies an external object to an internal one.
572  *              NOTE: Pointers can be copied, we don't need to copy data.
573  *              (The pointers have to be valid in our address space no matter
574  *              what we do with them!)
575  *
576  ******************************************************************************/
577 
578 static ACPI_STATUS
AcpiUtCopyEsimpleToIsimple(ACPI_OBJECT * ExternalObject,ACPI_OPERAND_OBJECT ** RetInternalObject)579 AcpiUtCopyEsimpleToIsimple (
580     ACPI_OBJECT             *ExternalObject,
581     ACPI_OPERAND_OBJECT     **RetInternalObject)
582 {
583     ACPI_OPERAND_OBJECT     *InternalObject;
584 
585 
586     ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple);
587 
588 
589     /*
590      * Simple types supported are: String, Buffer, Integer
591      */
592     switch (ExternalObject->Type)
593     {
594     case ACPI_TYPE_STRING:
595     case ACPI_TYPE_BUFFER:
596     case ACPI_TYPE_INTEGER:
597     case ACPI_TYPE_LOCAL_REFERENCE:
598 
599         InternalObject = AcpiUtCreateInternalObject (
600             (UINT8) ExternalObject->Type);
601         if (!InternalObject)
602         {
603             return_ACPI_STATUS (AE_NO_MEMORY);
604         }
605         break;
606 
607     case ACPI_TYPE_ANY: /* This is the case for a NULL object */
608 
609         *RetInternalObject = NULL;
610         return_ACPI_STATUS (AE_OK);
611 
612     default:
613 
614         /* All other types are not supported */
615 
616         ACPI_ERROR ((AE_INFO,
617             "Unsupported object type, cannot convert to internal object: %s",
618             AcpiUtGetTypeName (ExternalObject->Type)));
619 
620         return_ACPI_STATUS (AE_SUPPORT);
621     }
622 
623 
624     /* Must COPY string and buffer contents */
625 
626     switch (ExternalObject->Type)
627     {
628     case ACPI_TYPE_STRING:
629 
630         InternalObject->String.Pointer =
631             ACPI_ALLOCATE_ZEROED ((ACPI_SIZE)
632                 ExternalObject->String.Length + 1);
633 
634         if (!InternalObject->String.Pointer)
635         {
636             goto ErrorExit;
637         }
638 
639         memcpy (InternalObject->String.Pointer,
640             ExternalObject->String.Pointer,
641             ExternalObject->String.Length);
642 
643         InternalObject->String.Length = ExternalObject->String.Length;
644         break;
645 
646     case ACPI_TYPE_BUFFER:
647 
648         InternalObject->Buffer.Pointer =
649             ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length);
650         if (!InternalObject->Buffer.Pointer)
651         {
652             goto ErrorExit;
653         }
654 
655         memcpy (InternalObject->Buffer.Pointer,
656             ExternalObject->Buffer.Pointer,
657             ExternalObject->Buffer.Length);
658 
659         InternalObject->Buffer.Length = ExternalObject->Buffer.Length;
660 
661         /* Mark buffer data valid */
662 
663         InternalObject->Buffer.Flags |= AOPOBJ_DATA_VALID;
664         break;
665 
666     case ACPI_TYPE_INTEGER:
667 
668         InternalObject->Integer.Value = ExternalObject->Integer.Value;
669         break;
670 
671     case ACPI_TYPE_LOCAL_REFERENCE:
672 
673         /* An incoming reference is defined to be a namespace node */
674 
675         InternalObject->Reference.Class = ACPI_REFCLASS_REFOF;
676         InternalObject->Reference.Object = ExternalObject->Reference.Handle;
677         break;
678 
679     default:
680 
681         /* Other types can't get here */
682 
683         break;
684     }
685 
686     *RetInternalObject = InternalObject;
687     return_ACPI_STATUS (AE_OK);
688 
689 
690 ErrorExit:
691     AcpiUtRemoveReference (InternalObject);
692     return_ACPI_STATUS (AE_NO_MEMORY);
693 }
694 
695 
696 /*******************************************************************************
697  *
698  * FUNCTION:    AcpiUtCopyEpackageToIpackage
699  *
700  * PARAMETERS:  ExternalObject      - The external object to be converted
701  *              InternalObject      - Where the internal object is returned
702  *
703  * RETURN:      Status
704  *
705  * DESCRIPTION: Copy an external package object to an internal package.
706  *              Handles nested packages.
707  *
708  ******************************************************************************/
709 
710 static ACPI_STATUS
AcpiUtCopyEpackageToIpackage(ACPI_OBJECT * ExternalObject,ACPI_OPERAND_OBJECT ** InternalObject)711 AcpiUtCopyEpackageToIpackage (
712     ACPI_OBJECT             *ExternalObject,
713     ACPI_OPERAND_OBJECT     **InternalObject)
714 {
715     ACPI_STATUS             Status = AE_OK;
716     ACPI_OPERAND_OBJECT     *PackageObject;
717     ACPI_OPERAND_OBJECT     **PackageElements;
718     UINT32                  i;
719 
720 
721     ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage);
722 
723 
724     /* Create the package object */
725 
726     PackageObject = AcpiUtCreatePackageObject (
727         ExternalObject->Package.Count);
728     if (!PackageObject)
729     {
730         return_ACPI_STATUS (AE_NO_MEMORY);
731     }
732 
733     PackageElements = PackageObject->Package.Elements;
734 
735     /*
736      * Recursive implementation. Probably ok, since nested external
737      * packages as parameters should be very rare.
738      */
739     for (i = 0; i < ExternalObject->Package.Count; i++)
740     {
741         Status = AcpiUtCopyEobjectToIobject (
742             &ExternalObject->Package.Elements[i],
743             &PackageElements[i]);
744         if (ACPI_FAILURE (Status))
745         {
746             /* Truncate package and delete it */
747 
748             PackageObject->Package.Count = i;
749             PackageElements[i] = NULL;
750             AcpiUtRemoveReference (PackageObject);
751             return_ACPI_STATUS (Status);
752         }
753     }
754 
755     /* Mark package data valid */
756 
757     PackageObject->Package.Flags |= AOPOBJ_DATA_VALID;
758 
759     *InternalObject = PackageObject;
760     return_ACPI_STATUS (Status);
761 }
762 
763 
764 /*******************************************************************************
765  *
766  * FUNCTION:    AcpiUtCopyEobjectToIobject
767  *
768  * PARAMETERS:  ExternalObject      - The external object to be converted
769  *              InternalObject      - Where the internal object is returned
770  *
771  * RETURN:      Status
772  *
773  * DESCRIPTION: Converts an external object to an internal object.
774  *
775  ******************************************************************************/
776 
777 ACPI_STATUS
AcpiUtCopyEobjectToIobject(ACPI_OBJECT * ExternalObject,ACPI_OPERAND_OBJECT ** InternalObject)778 AcpiUtCopyEobjectToIobject (
779     ACPI_OBJECT             *ExternalObject,
780     ACPI_OPERAND_OBJECT     **InternalObject)
781 {
782     ACPI_STATUS             Status;
783 
784 
785     ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject);
786 
787 
788     if (ExternalObject->Type == ACPI_TYPE_PACKAGE)
789     {
790         Status = AcpiUtCopyEpackageToIpackage (
791             ExternalObject, InternalObject);
792     }
793     else
794     {
795         /*
796          * Build a simple object (no nested objects)
797          */
798         Status = AcpiUtCopyEsimpleToIsimple (ExternalObject,
799             InternalObject);
800     }
801 
802     return_ACPI_STATUS (Status);
803 }
804 
805 
806 /*******************************************************************************
807  *
808  * FUNCTION:    AcpiUtCopySimpleObject
809  *
810  * PARAMETERS:  SourceDesc          - The internal object to be copied
811  *              DestDesc            - New target object
812  *
813  * RETURN:      Status
814  *
815  * DESCRIPTION: Simple copy of one internal object to another. Reference count
816  *              of the destination object is preserved.
817  *
818  ******************************************************************************/
819 
820 static ACPI_STATUS
AcpiUtCopySimpleObject(ACPI_OPERAND_OBJECT * SourceDesc,ACPI_OPERAND_OBJECT * DestDesc)821 AcpiUtCopySimpleObject (
822     ACPI_OPERAND_OBJECT     *SourceDesc,
823     ACPI_OPERAND_OBJECT     *DestDesc)
824 {
825     UINT16                  ReferenceCount;
826     ACPI_OPERAND_OBJECT     *NextObject;
827     ACPI_STATUS             Status;
828     ACPI_SIZE               CopySize;
829 
830 
831     /* Save fields from destination that we don't want to overwrite */
832 
833     ReferenceCount = DestDesc->Common.ReferenceCount;
834     NextObject = DestDesc->Common.NextObject;
835 
836     /*
837      * Copy the entire source object over the destination object.
838      * Note: Source can be either an operand object or namespace node.
839      */
840     CopySize = sizeof (ACPI_OPERAND_OBJECT);
841     if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_NAMED)
842     {
843         CopySize = sizeof (ACPI_NAMESPACE_NODE);
844     }
845 
846     memcpy (ACPI_CAST_PTR (char, DestDesc),
847         ACPI_CAST_PTR (char, SourceDesc), CopySize);
848 
849     /* Restore the saved fields */
850 
851     DestDesc->Common.ReferenceCount = ReferenceCount;
852     DestDesc->Common.NextObject = NextObject;
853 
854     /* New object is not static, regardless of source */
855 
856     DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER;
857 
858     /* Handle the objects with extra data */
859 
860     switch (DestDesc->Common.Type)
861     {
862     case ACPI_TYPE_BUFFER:
863         /*
864          * Allocate and copy the actual buffer if and only if:
865          * 1) There is a valid buffer pointer
866          * 2) The buffer has a length > 0
867          */
868         if ((SourceDesc->Buffer.Pointer) &&
869             (SourceDesc->Buffer.Length))
870         {
871             DestDesc->Buffer.Pointer =
872                 ACPI_ALLOCATE (SourceDesc->Buffer.Length);
873             if (!DestDesc->Buffer.Pointer)
874             {
875                 return (AE_NO_MEMORY);
876             }
877 
878             /* Copy the actual buffer data */
879 
880             memcpy (DestDesc->Buffer.Pointer,
881                 SourceDesc->Buffer.Pointer, SourceDesc->Buffer.Length);
882         }
883         break;
884 
885     case ACPI_TYPE_STRING:
886         /*
887          * Allocate and copy the actual string if and only if:
888          * 1) There is a valid string pointer
889          * (Pointer to a NULL string is allowed)
890          */
891         if (SourceDesc->String.Pointer)
892         {
893             DestDesc->String.Pointer =
894                 ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1);
895             if (!DestDesc->String.Pointer)
896             {
897                 return (AE_NO_MEMORY);
898             }
899 
900             /* Copy the actual string data */
901 
902             memcpy (DestDesc->String.Pointer, SourceDesc->String.Pointer,
903                 (ACPI_SIZE) SourceDesc->String.Length + 1);
904         }
905         break;
906 
907     case ACPI_TYPE_LOCAL_REFERENCE:
908         /*
909          * We copied the reference object, so we now must add a reference
910          * to the object pointed to by the reference
911          *
912          * DDBHandle reference (from Load/LoadTable) is a special reference,
913          * it does not have a Reference.Object, so does not need to
914          * increase the reference count
915          */
916         if (SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE)
917         {
918             break;
919         }
920 
921         AcpiUtAddReference (SourceDesc->Reference.Object);
922         break;
923 
924     case ACPI_TYPE_REGION:
925         /*
926          * We copied the Region Handler, so we now must add a reference
927          */
928         if (DestDesc->Region.Handler)
929         {
930             AcpiUtAddReference (DestDesc->Region.Handler);
931         }
932         break;
933 
934     /*
935      * For Mutex and Event objects, we cannot simply copy the underlying
936      * OS object. We must create a new one.
937      */
938     case ACPI_TYPE_MUTEX:
939 
940         Status = AcpiOsCreateMutex (&DestDesc->Mutex.OsMutex);
941         if (ACPI_FAILURE (Status))
942         {
943             return (Status);
944         }
945         break;
946 
947     case ACPI_TYPE_EVENT:
948 
949         Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
950             &DestDesc->Event.OsSemaphore);
951         if (ACPI_FAILURE (Status))
952         {
953             return (Status);
954         }
955         break;
956 
957     default:
958 
959         /* Nothing to do for other simple objects */
960 
961         break;
962     }
963 
964     return (AE_OK);
965 }
966 
967 
968 /*******************************************************************************
969  *
970  * FUNCTION:    AcpiUtCopyIelementToIelement
971  *
972  * PARAMETERS:  ACPI_PKG_CALLBACK
973  *
974  * RETURN:      Status
975  *
976  * DESCRIPTION: Copy one package element to another package element
977  *
978  ******************************************************************************/
979 
980 static ACPI_STATUS
AcpiUtCopyIelementToIelement(UINT8 ObjectType,ACPI_OPERAND_OBJECT * SourceObject,ACPI_GENERIC_STATE * State,void * Context)981 AcpiUtCopyIelementToIelement (
982     UINT8                   ObjectType,
983     ACPI_OPERAND_OBJECT     *SourceObject,
984     ACPI_GENERIC_STATE      *State,
985     void                    *Context)
986 {
987     ACPI_STATUS             Status = AE_OK;
988     UINT32                  ThisIndex;
989     ACPI_OPERAND_OBJECT     **ThisTargetPtr;
990     ACPI_OPERAND_OBJECT     *TargetObject;
991 
992 
993     ACPI_FUNCTION_ENTRY ();
994 
995 
996     ThisIndex = State->Pkg.Index;
997     ThisTargetPtr = (ACPI_OPERAND_OBJECT **)
998         &State->Pkg.DestObject->Package.Elements[ThisIndex];
999 
1000     switch (ObjectType)
1001     {
1002     case ACPI_COPY_TYPE_SIMPLE:
1003 
1004         /* A null source object indicates a (legal) null package element */
1005 
1006         if (SourceObject)
1007         {
1008             /*
1009              * This is a simple object, just copy it
1010              */
1011             TargetObject = AcpiUtCreateInternalObject (
1012                 SourceObject->Common.Type);
1013             if (!TargetObject)
1014             {
1015                 return (AE_NO_MEMORY);
1016             }
1017 
1018             Status = AcpiUtCopySimpleObject (SourceObject, TargetObject);
1019             if (ACPI_FAILURE (Status))
1020             {
1021                 goto ErrorExit;
1022             }
1023 
1024             *ThisTargetPtr = TargetObject;
1025         }
1026         else
1027         {
1028             /* Pass through a null element */
1029 
1030             *ThisTargetPtr = NULL;
1031         }
1032         break;
1033 
1034     case ACPI_COPY_TYPE_PACKAGE:
1035         /*
1036          * This object is a package - go down another nesting level
1037          * Create and build the package object
1038          */
1039         TargetObject = AcpiUtCreatePackageObject (
1040             SourceObject->Package.Count);
1041         if (!TargetObject)
1042         {
1043             return (AE_NO_MEMORY);
1044         }
1045 
1046         TargetObject->Common.Flags = SourceObject->Common.Flags;
1047 
1048         /* Pass the new package object back to the package walk routine */
1049 
1050         State->Pkg.ThisTargetObj = TargetObject;
1051 
1052         /* Store the object pointer in the parent package object */
1053 
1054         *ThisTargetPtr = TargetObject;
1055         break;
1056 
1057     default:
1058 
1059         return (AE_BAD_PARAMETER);
1060     }
1061 
1062     return (Status);
1063 
1064 ErrorExit:
1065     AcpiUtRemoveReference (TargetObject);
1066     return (Status);
1067 }
1068 
1069 
1070 /*******************************************************************************
1071  *
1072  * FUNCTION:    AcpiUtCopyIpackageToIpackage
1073  *
1074  * PARAMETERS:  SourceObj       - Pointer to the source package object
1075  *              DestObj         - Where the internal object is returned
1076  *              WalkState       - Current Walk state descriptor
1077  *
1078  * RETURN:      Status
1079  *
1080  * DESCRIPTION: This function is called to copy an internal package object
1081  *              into another internal package object.
1082  *
1083  ******************************************************************************/
1084 
1085 static ACPI_STATUS
AcpiUtCopyIpackageToIpackage(ACPI_OPERAND_OBJECT * SourceObj,ACPI_OPERAND_OBJECT * DestObj,ACPI_WALK_STATE * WalkState)1086 AcpiUtCopyIpackageToIpackage (
1087     ACPI_OPERAND_OBJECT     *SourceObj,
1088     ACPI_OPERAND_OBJECT     *DestObj,
1089     ACPI_WALK_STATE         *WalkState)
1090 {
1091     ACPI_STATUS             Status = AE_OK;
1092 
1093 
1094     ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage);
1095 
1096 
1097     DestObj->Common.Type = SourceObj->Common.Type;
1098     DestObj->Common.Flags = SourceObj->Common.Flags;
1099     DestObj->Package.Count = SourceObj->Package.Count;
1100 
1101     /*
1102      * Create the object array and walk the source package tree
1103      */
1104     DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED (
1105         ((ACPI_SIZE) SourceObj->Package.Count + 1) *
1106         sizeof (void *));
1107     if (!DestObj->Package.Elements)
1108     {
1109         ACPI_ERROR ((AE_INFO, "Package allocation failure"));
1110         return_ACPI_STATUS (AE_NO_MEMORY);
1111     }
1112 
1113     /*
1114      * Copy the package element-by-element by walking the package "tree".
1115      * This handles nested packages of arbitrary depth.
1116      */
1117     Status = AcpiUtWalkPackageTree (SourceObj, DestObj,
1118         AcpiUtCopyIelementToIelement, WalkState);
1119     if (ACPI_FAILURE (Status))
1120     {
1121         /* On failure, delete the destination package object */
1122 
1123         AcpiUtRemoveReference (DestObj);
1124     }
1125 
1126     return_ACPI_STATUS (Status);
1127 }
1128 
1129 
1130 /*******************************************************************************
1131  *
1132  * FUNCTION:    AcpiUtCopyIobjectToIobject
1133  *
1134  * PARAMETERS:  SourceDesc          - The internal object to be copied
1135  *              DestDesc            - Where the copied object is returned
1136  *              WalkState           - Current walk state
1137  *
1138  * RETURN:      Status
1139  *
1140  * DESCRIPTION: Copy an internal object to a new internal object
1141  *
1142  ******************************************************************************/
1143 
1144 ACPI_STATUS
AcpiUtCopyIobjectToIobject(ACPI_OPERAND_OBJECT * SourceDesc,ACPI_OPERAND_OBJECT ** DestDesc,ACPI_WALK_STATE * WalkState)1145 AcpiUtCopyIobjectToIobject (
1146     ACPI_OPERAND_OBJECT     *SourceDesc,
1147     ACPI_OPERAND_OBJECT     **DestDesc,
1148     ACPI_WALK_STATE         *WalkState)
1149 {
1150     ACPI_STATUS             Status = AE_OK;
1151 
1152 
1153     ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject);
1154 
1155 
1156     /* Create the top level object */
1157 
1158     *DestDesc = AcpiUtCreateInternalObject (SourceDesc->Common.Type);
1159     if (!*DestDesc)
1160     {
1161         return_ACPI_STATUS (AE_NO_MEMORY);
1162     }
1163 
1164     /* Copy the object and possible subobjects */
1165 
1166     if (SourceDesc->Common.Type == ACPI_TYPE_PACKAGE)
1167     {
1168         Status = AcpiUtCopyIpackageToIpackage (
1169             SourceDesc, *DestDesc, WalkState);
1170     }
1171     else
1172     {
1173         Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc);
1174     }
1175 
1176     /* Delete the allocated object if copy failed */
1177 
1178     if (ACPI_FAILURE (Status))
1179     {
1180         AcpiUtRemoveReference (*DestDesc);
1181     }
1182 
1183     return_ACPI_STATUS (Status);
1184 }
1185