1 /******************************************************************************
2  *
3  * Module Name: dsopcode - Dispatcher support for regions and fields
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2018, 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 "acpi.h"
153 #include "accommon.h"
154 #include "acparser.h"
155 #include "amlcode.h"
156 #include "acdispat.h"
157 #include "acinterp.h"
158 #include "acnamesp.h"
159 #include "acevents.h"
160 #include "actables.h"
161 
162 #define _COMPONENT          ACPI_DISPATCHER
163         ACPI_MODULE_NAME    ("dsopcode")
164 
165 /* Local prototypes */
166 
167 static ACPI_STATUS
168 AcpiDsInitBufferField (
169     UINT16                  AmlOpcode,
170     ACPI_OPERAND_OBJECT     *ObjDesc,
171     ACPI_OPERAND_OBJECT     *BufferDesc,
172     ACPI_OPERAND_OBJECT     *OffsetDesc,
173     ACPI_OPERAND_OBJECT     *LengthDesc,
174     ACPI_OPERAND_OBJECT     *ResultDesc);
175 
176 
177 /*******************************************************************************
178  *
179  * FUNCTION:    AcpiDsInitializeRegion
180  *
181  * PARAMETERS:  ObjHandle       - Region namespace node
182  *
183  * RETURN:      Status
184  *
185  * DESCRIPTION: Front end to EvInitializeRegion
186  *
187  ******************************************************************************/
188 
189 ACPI_STATUS
AcpiDsInitializeRegion(ACPI_HANDLE ObjHandle)190 AcpiDsInitializeRegion (
191     ACPI_HANDLE             ObjHandle)
192 {
193     ACPI_OPERAND_OBJECT     *ObjDesc;
194     ACPI_STATUS             Status;
195 
196 
197     ObjDesc = AcpiNsGetAttachedObject (ObjHandle);
198 
199     /* Namespace is NOT locked */
200 
201     Status = AcpiEvInitializeRegion (ObjDesc);
202     return (Status);
203 }
204 
205 
206 /*******************************************************************************
207  *
208  * FUNCTION:    AcpiDsInitBufferField
209  *
210  * PARAMETERS:  AmlOpcode       - CreateXxxField
211  *              ObjDesc         - BufferField object
212  *              BufferDesc      - Host Buffer
213  *              OffsetDesc      - Offset into buffer
214  *              LengthDesc      - Length of field (CREATE_FIELD_OP only)
215  *              ResultDesc      - Where to store the result
216  *
217  * RETURN:      Status
218  *
219  * DESCRIPTION: Perform actual initialization of a buffer field
220  *
221  ******************************************************************************/
222 
223 static ACPI_STATUS
AcpiDsInitBufferField(UINT16 AmlOpcode,ACPI_OPERAND_OBJECT * ObjDesc,ACPI_OPERAND_OBJECT * BufferDesc,ACPI_OPERAND_OBJECT * OffsetDesc,ACPI_OPERAND_OBJECT * LengthDesc,ACPI_OPERAND_OBJECT * ResultDesc)224 AcpiDsInitBufferField (
225     UINT16                  AmlOpcode,
226     ACPI_OPERAND_OBJECT     *ObjDesc,
227     ACPI_OPERAND_OBJECT     *BufferDesc,
228     ACPI_OPERAND_OBJECT     *OffsetDesc,
229     ACPI_OPERAND_OBJECT     *LengthDesc,
230     ACPI_OPERAND_OBJECT     *ResultDesc)
231 {
232     UINT32                  Offset;
233     UINT32                  BitOffset;
234     UINT32                  BitCount;
235     UINT8                   FieldFlags;
236     ACPI_STATUS             Status;
237 
238 
239     ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc);
240 
241 
242     /* Host object must be a Buffer */
243 
244     if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER)
245     {
246         ACPI_ERROR ((AE_INFO,
247             "Target of Create Field is not a Buffer object - %s",
248             AcpiUtGetObjectTypeName (BufferDesc)));
249 
250         Status = AE_AML_OPERAND_TYPE;
251         goto Cleanup;
252     }
253 
254     /*
255      * The last parameter to all of these opcodes (ResultDesc) started
256      * out as a NameString, and should therefore now be a NS node
257      * after resolution in AcpiExResolveOperands().
258      */
259     if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED)
260     {
261         ACPI_ERROR ((AE_INFO,
262             "(%s) destination not a NS Node [%s]",
263             AcpiPsGetOpcodeName (AmlOpcode),
264             AcpiUtGetDescriptorName (ResultDesc)));
265 
266         Status = AE_AML_OPERAND_TYPE;
267         goto Cleanup;
268     }
269 
270     Offset = (UINT32) OffsetDesc->Integer.Value;
271 
272     /*
273      * Setup the Bit offsets and counts, according to the opcode
274      */
275     switch (AmlOpcode)
276     {
277     case AML_CREATE_FIELD_OP:
278 
279         /* Offset is in bits, count is in bits */
280 
281         FieldFlags = AML_FIELD_ACCESS_BYTE;
282         BitOffset  = Offset;
283         BitCount   = (UINT32) LengthDesc->Integer.Value;
284 
285         /* Must have a valid (>0) bit count */
286 
287         if (BitCount == 0)
288         {
289             ACPI_ERROR ((AE_INFO,
290                 "Attempt to CreateField of length zero"));
291             Status = AE_AML_OPERAND_VALUE;
292             goto Cleanup;
293         }
294         break;
295 
296     case AML_CREATE_BIT_FIELD_OP:
297 
298         /* Offset is in bits, Field is one bit */
299 
300         BitOffset  = Offset;
301         BitCount   = 1;
302         FieldFlags = AML_FIELD_ACCESS_BYTE;
303         break;
304 
305     case AML_CREATE_BYTE_FIELD_OP:
306 
307         /* Offset is in bytes, field is one byte */
308 
309         BitOffset  = 8 * Offset;
310         BitCount   = 8;
311         FieldFlags = AML_FIELD_ACCESS_BYTE;
312         break;
313 
314     case AML_CREATE_WORD_FIELD_OP:
315 
316         /* Offset is in bytes, field is one word */
317 
318         BitOffset  = 8 * Offset;
319         BitCount   = 16;
320         FieldFlags = AML_FIELD_ACCESS_WORD;
321         break;
322 
323     case AML_CREATE_DWORD_FIELD_OP:
324 
325         /* Offset is in bytes, field is one dword */
326 
327         BitOffset  = 8 * Offset;
328         BitCount   = 32;
329         FieldFlags = AML_FIELD_ACCESS_DWORD;
330         break;
331 
332     case AML_CREATE_QWORD_FIELD_OP:
333 
334         /* Offset is in bytes, field is one qword */
335 
336         BitOffset  = 8 * Offset;
337         BitCount   = 64;
338         FieldFlags = AML_FIELD_ACCESS_QWORD;
339         break;
340 
341     default:
342 
343         ACPI_ERROR ((AE_INFO,
344             "Unknown field creation opcode 0x%02X",
345             AmlOpcode));
346         Status = AE_AML_BAD_OPCODE;
347         goto Cleanup;
348     }
349 
350     /* Entire field must fit within the current length of the buffer */
351 
352     if ((BitOffset + BitCount) >
353         (8 * (UINT32) BufferDesc->Buffer.Length))
354     {
355         ACPI_ERROR ((AE_INFO,
356             "Field [%4.4s] at bit offset/length %u/%u "
357             "exceeds size of target Buffer (%u bits)",
358             AcpiUtGetNodeName (ResultDesc), BitOffset, BitCount,
359             8 * (UINT32) BufferDesc->Buffer.Length));
360         Status = AE_AML_BUFFER_LIMIT;
361         goto Cleanup;
362     }
363 
364     /*
365      * Initialize areas of the field object that are common to all fields
366      * For FieldFlags, use LOCK_RULE = 0 (NO_LOCK),
367      * UPDATE_RULE = 0 (UPDATE_PRESERVE)
368      */
369     Status = AcpiExPrepCommonFieldObject (
370         ObjDesc, FieldFlags, 0, BitOffset, BitCount);
371     if (ACPI_FAILURE (Status))
372     {
373         goto Cleanup;
374     }
375 
376     ObjDesc->BufferField.BufferObj = BufferDesc;
377 
378     /* Reference count for BufferDesc inherits ObjDesc count */
379 
380     BufferDesc->Common.ReferenceCount = (UINT16)
381         (BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount);
382 
383 
384 Cleanup:
385 
386     /* Always delete the operands */
387 
388     AcpiUtRemoveReference (OffsetDesc);
389     AcpiUtRemoveReference (BufferDesc);
390 
391     if (AmlOpcode == AML_CREATE_FIELD_OP)
392     {
393         AcpiUtRemoveReference (LengthDesc);
394     }
395 
396     /* On failure, delete the result descriptor */
397 
398     if (ACPI_FAILURE (Status))
399     {
400         AcpiUtRemoveReference (ResultDesc);     /* Result descriptor */
401     }
402     else
403     {
404         /* Now the address and length are valid for this BufferField */
405 
406         ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID;
407     }
408 
409     return_ACPI_STATUS (Status);
410 }
411 
412 
413 /*******************************************************************************
414  *
415  * FUNCTION:    AcpiDsEvalBufferFieldOperands
416  *
417  * PARAMETERS:  WalkState       - Current walk
418  *              Op              - A valid BufferField Op object
419  *
420  * RETURN:      Status
421  *
422  * DESCRIPTION: Get BufferField Buffer and Index
423  *              Called from AcpiDsExecEndOp during BufferField parse tree walk
424  *
425  ******************************************************************************/
426 
427 ACPI_STATUS
AcpiDsEvalBufferFieldOperands(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op)428 AcpiDsEvalBufferFieldOperands (
429     ACPI_WALK_STATE         *WalkState,
430     ACPI_PARSE_OBJECT       *Op)
431 {
432     ACPI_STATUS             Status;
433     ACPI_OPERAND_OBJECT     *ObjDesc;
434     ACPI_NAMESPACE_NODE     *Node;
435     ACPI_PARSE_OBJECT       *NextOp;
436 
437 
438     ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
439 
440 
441     /*
442      * This is where we evaluate the address and length fields of the
443      * CreateXxxField declaration
444      */
445     Node =  Op->Common.Node;
446 
447     /* NextOp points to the op that holds the Buffer */
448 
449     NextOp = Op->Common.Value.Arg;
450 
451     /* Evaluate/create the address and length operands */
452 
453     Status = AcpiDsCreateOperands (WalkState, NextOp);
454     if (ACPI_FAILURE (Status))
455     {
456         return_ACPI_STATUS (Status);
457     }
458 
459     ObjDesc = AcpiNsGetAttachedObject (Node);
460     if (!ObjDesc)
461     {
462         return_ACPI_STATUS (AE_NOT_EXIST);
463     }
464 
465     /* Resolve the operands */
466 
467     Status = AcpiExResolveOperands (
468         Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
469     if (ACPI_FAILURE (Status))
470     {
471         ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
472             AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
473 
474         return_ACPI_STATUS (Status);
475     }
476 
477     /* Initialize the Buffer Field */
478 
479     if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
480     {
481         /* NOTE: Slightly different operands for this opcode */
482 
483         Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
484             WalkState->Operands[0], WalkState->Operands[1],
485             WalkState->Operands[2], WalkState->Operands[3]);
486     }
487     else
488     {
489         /* All other, CreateXxxField opcodes */
490 
491         Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
492             WalkState->Operands[0], WalkState->Operands[1],
493             NULL, WalkState->Operands[2]);
494     }
495 
496     return_ACPI_STATUS (Status);
497 }
498 
499 
500 /*******************************************************************************
501  *
502  * FUNCTION:    AcpiDsEvalRegionOperands
503  *
504  * PARAMETERS:  WalkState       - Current walk
505  *              Op              - A valid region Op object
506  *
507  * RETURN:      Status
508  *
509  * DESCRIPTION: Get region address and length
510  *              Called from AcpiDsExecEndOp during OpRegion parse tree walk
511  *
512  ******************************************************************************/
513 
514 ACPI_STATUS
AcpiDsEvalRegionOperands(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op)515 AcpiDsEvalRegionOperands (
516     ACPI_WALK_STATE         *WalkState,
517     ACPI_PARSE_OBJECT       *Op)
518 {
519     ACPI_STATUS             Status;
520     ACPI_OPERAND_OBJECT     *ObjDesc;
521     ACPI_OPERAND_OBJECT     *OperandDesc;
522     ACPI_NAMESPACE_NODE     *Node;
523     ACPI_PARSE_OBJECT       *NextOp;
524 
525 
526     ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
527 
528 
529     /*
530      * This is where we evaluate the address and length fields of the
531      * OpRegion declaration
532      */
533     Node =  Op->Common.Node;
534 
535     /* NextOp points to the op that holds the SpaceID */
536 
537     NextOp = Op->Common.Value.Arg;
538 
539     /* NextOp points to address op */
540 
541     NextOp = NextOp->Common.Next;
542 
543     /* Evaluate/create the address and length operands */
544 
545     Status = AcpiDsCreateOperands (WalkState, NextOp);
546     if (ACPI_FAILURE (Status))
547     {
548         return_ACPI_STATUS (Status);
549     }
550 
551     /* Resolve the length and address operands to numbers */
552 
553     Status = AcpiExResolveOperands (
554         Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
555     if (ACPI_FAILURE (Status))
556     {
557         return_ACPI_STATUS (Status);
558     }
559 
560     ObjDesc = AcpiNsGetAttachedObject (Node);
561     if (!ObjDesc)
562     {
563         return_ACPI_STATUS (AE_NOT_EXIST);
564     }
565 
566     /*
567      * Get the length operand and save it
568      * (at Top of stack)
569      */
570     OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
571 
572     ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
573     AcpiUtRemoveReference (OperandDesc);
574 
575     /*
576      * Get the address and save it
577      * (at top of stack - 1)
578      */
579     OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
580 
581     ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
582         OperandDesc->Integer.Value;
583     AcpiUtRemoveReference (OperandDesc);
584 
585     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
586         ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
587         ObjDesc->Region.Length));
588 
589     /* Now the address and length are valid for this opregion */
590 
591     ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
592     return_ACPI_STATUS (Status);
593 }
594 
595 
596 /*******************************************************************************
597  *
598  * FUNCTION:    AcpiDsEvalTableRegionOperands
599  *
600  * PARAMETERS:  WalkState       - Current walk
601  *              Op              - A valid region Op object
602  *
603  * RETURN:      Status
604  *
605  * DESCRIPTION: Get region address and length.
606  *              Called from AcpiDsExecEndOp during DataTableRegion parse
607  *              tree walk.
608  *
609  ******************************************************************************/
610 
611 ACPI_STATUS
AcpiDsEvalTableRegionOperands(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op)612 AcpiDsEvalTableRegionOperands (
613     ACPI_WALK_STATE         *WalkState,
614     ACPI_PARSE_OBJECT       *Op)
615 {
616     ACPI_STATUS             Status;
617     ACPI_OPERAND_OBJECT     *ObjDesc;
618     ACPI_OPERAND_OBJECT     **Operand;
619     ACPI_NAMESPACE_NODE     *Node;
620     ACPI_PARSE_OBJECT       *NextOp;
621     ACPI_TABLE_HEADER       *Table;
622     UINT32                  TableIndex;
623 
624 
625     ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
626 
627 
628     /*
629      * This is where we evaluate the Signature string, OemId string,
630      * and OemTableId string of the Data Table Region declaration
631      */
632     Node =  Op->Common.Node;
633 
634     /* NextOp points to Signature string op */
635 
636     NextOp = Op->Common.Value.Arg;
637 
638     /*
639      * Evaluate/create the Signature string, OemId string,
640      * and OemTableId string operands
641      */
642     Status = AcpiDsCreateOperands (WalkState, NextOp);
643     if (ACPI_FAILURE (Status))
644     {
645         return_ACPI_STATUS (Status);
646     }
647 
648     Operand = &WalkState->Operands[0];
649 
650     /*
651      * Resolve the Signature string, OemId string,
652      * and OemTableId string operands
653      */
654     Status = AcpiExResolveOperands (
655         Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
656     if (ACPI_FAILURE (Status))
657     {
658         goto Cleanup;
659     }
660 
661     /* Find the ACPI table */
662 
663     Status = AcpiTbFindTable (
664         Operand[0]->String.Pointer,
665         Operand[1]->String.Pointer,
666         Operand[2]->String.Pointer, &TableIndex);
667     if (ACPI_FAILURE (Status))
668     {
669         if (Status == AE_NOT_FOUND)
670         {
671             ACPI_ERROR ((AE_INFO,
672                 "ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
673                 Operand[0]->String.Pointer,
674                 Operand[1]->String.Pointer,
675                 Operand[2]->String.Pointer));
676         }
677         goto Cleanup;
678     }
679 
680     Status = AcpiGetTableByIndex (TableIndex, &Table);
681     if (ACPI_FAILURE (Status))
682     {
683         goto Cleanup;
684     }
685 
686     ObjDesc = AcpiNsGetAttachedObject (Node);
687     if (!ObjDesc)
688     {
689         Status = AE_NOT_EXIST;
690         goto Cleanup;
691     }
692 
693     ObjDesc->Region.Address = ACPI_PTR_TO_PHYSADDR (Table);
694     ObjDesc->Region.Length = Table->Length;
695 
696     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
697         ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
698         ObjDesc->Region.Length));
699 
700     /* Now the address and length are valid for this opregion */
701 
702     ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
703 
704 Cleanup:
705     AcpiUtRemoveReference (Operand[0]);
706     AcpiUtRemoveReference (Operand[1]);
707     AcpiUtRemoveReference (Operand[2]);
708 
709     return_ACPI_STATUS (Status);
710 }
711 
712 
713 /*******************************************************************************
714  *
715  * FUNCTION:    AcpiDsEvalDataObjectOperands
716  *
717  * PARAMETERS:  WalkState       - Current walk
718  *              Op              - A valid DataObject Op object
719  *              ObjDesc         - DataObject
720  *
721  * RETURN:      Status
722  *
723  * DESCRIPTION: Get the operands and complete the following data object types:
724  *              Buffer, Package.
725  *
726  ******************************************************************************/
727 
728 ACPI_STATUS
AcpiDsEvalDataObjectOperands(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op,ACPI_OPERAND_OBJECT * ObjDesc)729 AcpiDsEvalDataObjectOperands (
730     ACPI_WALK_STATE         *WalkState,
731     ACPI_PARSE_OBJECT       *Op,
732     ACPI_OPERAND_OBJECT     *ObjDesc)
733 {
734     ACPI_STATUS             Status;
735     ACPI_OPERAND_OBJECT     *ArgDesc;
736     UINT32                  Length;
737 
738 
739     ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
740 
741 
742     /* The first operand (for all of these data objects) is the length */
743 
744     /*
745      * Set proper index into operand stack for AcpiDsObjStackPush
746      * invoked inside AcpiDsCreateOperand.
747      */
748     WalkState->OperandIndex = WalkState->NumOperands;
749 
750     /* Ignore if child is not valid */
751 
752     if (!Op->Common.Value.Arg)
753     {
754         ACPI_ERROR ((AE_INFO,
755             "Missing child while evaluating opcode %4.4X, Op %p",
756             Op->Common.AmlOpcode, Op));
757         return_ACPI_STATUS (AE_OK);
758     }
759 
760     Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
761     if (ACPI_FAILURE (Status))
762     {
763         return_ACPI_STATUS (Status);
764     }
765 
766     Status = AcpiExResolveOperands (WalkState->Opcode,
767         &(WalkState->Operands [WalkState->NumOperands -1]),
768         WalkState);
769     if (ACPI_FAILURE (Status))
770     {
771         return_ACPI_STATUS (Status);
772     }
773 
774     /* Extract length operand */
775 
776     ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
777     Length = (UINT32) ArgDesc->Integer.Value;
778 
779     /* Cleanup for length operand */
780 
781     Status = AcpiDsObjStackPop (1, WalkState);
782     if (ACPI_FAILURE (Status))
783     {
784         return_ACPI_STATUS (Status);
785     }
786 
787     AcpiUtRemoveReference (ArgDesc);
788 
789     /*
790      * Create the actual data object
791      */
792     switch (Op->Common.AmlOpcode)
793     {
794     case AML_BUFFER_OP:
795 
796         Status = AcpiDsBuildInternalBufferObj (
797             WalkState, Op, Length, &ObjDesc);
798         break;
799 
800     case AML_PACKAGE_OP:
801     case AML_VARIABLE_PACKAGE_OP:
802 
803         Status = AcpiDsBuildInternalPackageObj (
804             WalkState, Op, Length, &ObjDesc);
805         break;
806 
807     default:
808 
809         return_ACPI_STATUS (AE_AML_BAD_OPCODE);
810     }
811 
812     if (ACPI_SUCCESS (Status))
813     {
814         /*
815          * Return the object in the WalkState, unless the parent is a package -
816          * in this case, the return object will be stored in the parse tree
817          * for the package.
818          */
819         if ((!Op->Common.Parent) ||
820             ((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
821              (Op->Common.Parent->Common.AmlOpcode != AML_VARIABLE_PACKAGE_OP) &&
822              (Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
823         {
824             WalkState->ResultObj = ObjDesc;
825         }
826     }
827 
828     return_ACPI_STATUS (Status);
829 }
830 
831 
832 /*******************************************************************************
833  *
834  * FUNCTION:    AcpiDsEvalBankFieldOperands
835  *
836  * PARAMETERS:  WalkState       - Current walk
837  *              Op              - A valid BankField Op object
838  *
839  * RETURN:      Status
840  *
841  * DESCRIPTION: Get BankField BankValue
842  *              Called from AcpiDsExecEndOp during BankField parse tree walk
843  *
844  ******************************************************************************/
845 
846 ACPI_STATUS
AcpiDsEvalBankFieldOperands(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op)847 AcpiDsEvalBankFieldOperands (
848     ACPI_WALK_STATE         *WalkState,
849     ACPI_PARSE_OBJECT       *Op)
850 {
851     ACPI_STATUS             Status;
852     ACPI_OPERAND_OBJECT     *ObjDesc;
853     ACPI_OPERAND_OBJECT     *OperandDesc;
854     ACPI_NAMESPACE_NODE     *Node;
855     ACPI_PARSE_OBJECT       *NextOp;
856     ACPI_PARSE_OBJECT       *Arg;
857 
858 
859     ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op);
860 
861 
862     /*
863      * This is where we evaluate the BankValue field of the
864      * BankField declaration
865      */
866 
867     /* NextOp points to the op that holds the Region */
868 
869     NextOp = Op->Common.Value.Arg;
870 
871     /* NextOp points to the op that holds the Bank Register */
872 
873     NextOp = NextOp->Common.Next;
874 
875     /* NextOp points to the op that holds the Bank Value */
876 
877     NextOp = NextOp->Common.Next;
878 
879     /*
880      * Set proper index into operand stack for AcpiDsObjStackPush
881      * invoked inside AcpiDsCreateOperand.
882      *
883      * We use WalkState->Operands[0] to store the evaluated BankValue
884      */
885     WalkState->OperandIndex = 0;
886 
887     Status = AcpiDsCreateOperand (WalkState, NextOp, 0);
888     if (ACPI_FAILURE (Status))
889     {
890         return_ACPI_STATUS (Status);
891     }
892 
893     Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState);
894     if (ACPI_FAILURE (Status))
895     {
896         return_ACPI_STATUS (Status);
897     }
898 
899     ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS,
900         AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1);
901     /*
902      * Get the BankValue operand and save it
903      * (at Top of stack)
904      */
905     OperandDesc = WalkState->Operands[0];
906 
907     /* Arg points to the start Bank Field */
908 
909     Arg = AcpiPsGetArg (Op, 4);
910     while (Arg)
911     {
912         /* Ignore OFFSET and ACCESSAS terms here */
913 
914         if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
915         {
916             Node = Arg->Common.Node;
917 
918             ObjDesc = AcpiNsGetAttachedObject (Node);
919             if (!ObjDesc)
920             {
921                 return_ACPI_STATUS (AE_NOT_EXIST);
922             }
923 
924             ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value;
925         }
926 
927         /* Move to next field in the list */
928 
929         Arg = Arg->Common.Next;
930     }
931 
932     AcpiUtRemoveReference (OperandDesc);
933     return_ACPI_STATUS (Status);
934 }
935