1 | /****************************************************************************** |
2 | * |
3 | * Module Name: dsopcode - Dispatcher support for regions and fields |
4 | * |
5 | *****************************************************************************/ |
6 | |
7 | /* |
8 | * Copyright (C) 2000 - 2016, Intel Corp. |
9 | * All rights reserved. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions, and the following disclaimer, |
16 | * without modification. |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
18 | * substantially similar to the "NO WARRANTY" disclaimer below |
19 | * ("Disclaimer") and any redistribution must be conditioned upon |
20 | * including a substantially similar Disclaimer requirement for further |
21 | * binary redistribution. |
22 | * 3. Neither the names of the above-listed copyright holders nor the names |
23 | * of any contributors may be used to endorse or promote products derived |
24 | * from this software without specific prior written permission. |
25 | * |
26 | * Alternatively, this software may be distributed under the terms of the |
27 | * GNU General Public License ("GPL") version 2 as published by the Free |
28 | * Software Foundation. |
29 | * |
30 | * NO WARRANTY |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
41 | * POSSIBILITY OF SUCH DAMAGES. |
42 | */ |
43 | |
44 | #include "acpi.h" |
45 | #include "accommon.h" |
46 | #include "acparser.h" |
47 | #include "amlcode.h" |
48 | #include "acdispat.h" |
49 | #include "acinterp.h" |
50 | #include "acnamesp.h" |
51 | #include "acevents.h" |
52 | #include "actables.h" |
53 | |
54 | #define _COMPONENT ACPI_DISPATCHER |
55 | ACPI_MODULE_NAME ("dsopcode" ) |
56 | |
57 | /* Local prototypes */ |
58 | |
59 | static ACPI_STATUS |
60 | AcpiDsInitBufferField ( |
61 | UINT16 AmlOpcode, |
62 | ACPI_OPERAND_OBJECT *ObjDesc, |
63 | ACPI_OPERAND_OBJECT *BufferDesc, |
64 | ACPI_OPERAND_OBJECT *OffsetDesc, |
65 | ACPI_OPERAND_OBJECT *LengthDesc, |
66 | ACPI_OPERAND_OBJECT *ResultDesc); |
67 | |
68 | |
69 | /******************************************************************************* |
70 | * |
71 | * FUNCTION: AcpiDsInitializeRegion |
72 | * |
73 | * PARAMETERS: ObjHandle - Region namespace node |
74 | * |
75 | * RETURN: Status |
76 | * |
77 | * DESCRIPTION: Front end to EvInitializeRegion |
78 | * |
79 | ******************************************************************************/ |
80 | |
81 | ACPI_STATUS |
82 | AcpiDsInitializeRegion ( |
83 | ACPI_HANDLE ObjHandle) |
84 | { |
85 | ACPI_OPERAND_OBJECT *ObjDesc; |
86 | ACPI_STATUS Status; |
87 | |
88 | |
89 | ObjDesc = AcpiNsGetAttachedObject (ObjHandle); |
90 | |
91 | /* Namespace is NOT locked */ |
92 | |
93 | Status = AcpiEvInitializeRegion (ObjDesc, FALSE); |
94 | return (Status); |
95 | } |
96 | |
97 | |
98 | /******************************************************************************* |
99 | * |
100 | * FUNCTION: AcpiDsInitBufferField |
101 | * |
102 | * PARAMETERS: AmlOpcode - CreateXxxField |
103 | * ObjDesc - BufferField object |
104 | * BufferDesc - Host Buffer |
105 | * OffsetDesc - Offset into buffer |
106 | * LengthDesc - Length of field (CREATE_FIELD_OP only) |
107 | * ResultDesc - Where to store the result |
108 | * |
109 | * RETURN: Status |
110 | * |
111 | * DESCRIPTION: Perform actual initialization of a buffer field |
112 | * |
113 | ******************************************************************************/ |
114 | |
115 | static ACPI_STATUS |
116 | AcpiDsInitBufferField ( |
117 | UINT16 AmlOpcode, |
118 | ACPI_OPERAND_OBJECT *ObjDesc, |
119 | ACPI_OPERAND_OBJECT *BufferDesc, |
120 | ACPI_OPERAND_OBJECT *OffsetDesc, |
121 | ACPI_OPERAND_OBJECT *LengthDesc, |
122 | ACPI_OPERAND_OBJECT *ResultDesc) |
123 | { |
124 | UINT32 Offset; |
125 | UINT32 BitOffset; |
126 | UINT32 BitCount; |
127 | UINT8 FieldFlags; |
128 | ACPI_STATUS Status; |
129 | |
130 | |
131 | ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc); |
132 | |
133 | |
134 | /* Host object must be a Buffer */ |
135 | |
136 | if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER) |
137 | { |
138 | ACPI_ERROR ((AE_INFO, |
139 | "Target of Create Field is not a Buffer object - %s" , |
140 | AcpiUtGetObjectTypeName (BufferDesc))); |
141 | |
142 | Status = AE_AML_OPERAND_TYPE; |
143 | goto Cleanup; |
144 | } |
145 | |
146 | /* |
147 | * The last parameter to all of these opcodes (ResultDesc) started |
148 | * out as a NameString, and should therefore now be a NS node |
149 | * after resolution in AcpiExResolveOperands(). |
150 | */ |
151 | if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED) |
152 | { |
153 | ACPI_ERROR ((AE_INFO, |
154 | "(%s) destination not a NS Node [%s]" , |
155 | AcpiPsGetOpcodeName (AmlOpcode), |
156 | AcpiUtGetDescriptorName (ResultDesc))); |
157 | |
158 | Status = AE_AML_OPERAND_TYPE; |
159 | goto Cleanup; |
160 | } |
161 | |
162 | Offset = (UINT32) OffsetDesc->Integer.Value; |
163 | |
164 | /* |
165 | * Setup the Bit offsets and counts, according to the opcode |
166 | */ |
167 | switch (AmlOpcode) |
168 | { |
169 | case AML_CREATE_FIELD_OP: |
170 | |
171 | /* Offset is in bits, count is in bits */ |
172 | |
173 | FieldFlags = AML_FIELD_ACCESS_BYTE; |
174 | BitOffset = Offset; |
175 | BitCount = (UINT32) LengthDesc->Integer.Value; |
176 | |
177 | /* Must have a valid (>0) bit count */ |
178 | |
179 | if (BitCount == 0) |
180 | { |
181 | ACPI_ERROR ((AE_INFO, |
182 | "Attempt to CreateField of length zero" )); |
183 | Status = AE_AML_OPERAND_VALUE; |
184 | goto Cleanup; |
185 | } |
186 | break; |
187 | |
188 | case AML_CREATE_BIT_FIELD_OP: |
189 | |
190 | /* Offset is in bits, Field is one bit */ |
191 | |
192 | BitOffset = Offset; |
193 | BitCount = 1; |
194 | FieldFlags = AML_FIELD_ACCESS_BYTE; |
195 | break; |
196 | |
197 | case AML_CREATE_BYTE_FIELD_OP: |
198 | |
199 | /* Offset is in bytes, field is one byte */ |
200 | |
201 | BitOffset = 8 * Offset; |
202 | BitCount = 8; |
203 | FieldFlags = AML_FIELD_ACCESS_BYTE; |
204 | break; |
205 | |
206 | case AML_CREATE_WORD_FIELD_OP: |
207 | |
208 | /* Offset is in bytes, field is one word */ |
209 | |
210 | BitOffset = 8 * Offset; |
211 | BitCount = 16; |
212 | FieldFlags = AML_FIELD_ACCESS_WORD; |
213 | break; |
214 | |
215 | case AML_CREATE_DWORD_FIELD_OP: |
216 | |
217 | /* Offset is in bytes, field is one dword */ |
218 | |
219 | BitOffset = 8 * Offset; |
220 | BitCount = 32; |
221 | FieldFlags = AML_FIELD_ACCESS_DWORD; |
222 | break; |
223 | |
224 | case AML_CREATE_QWORD_FIELD_OP: |
225 | |
226 | /* Offset is in bytes, field is one qword */ |
227 | |
228 | BitOffset = 8 * Offset; |
229 | BitCount = 64; |
230 | FieldFlags = AML_FIELD_ACCESS_QWORD; |
231 | break; |
232 | |
233 | default: |
234 | |
235 | ACPI_ERROR ((AE_INFO, |
236 | "Unknown field creation opcode 0x%02X" , |
237 | AmlOpcode)); |
238 | Status = AE_AML_BAD_OPCODE; |
239 | goto Cleanup; |
240 | } |
241 | |
242 | /* Entire field must fit within the current length of the buffer */ |
243 | |
244 | if ((BitOffset + BitCount) > |
245 | (8 * (UINT32) BufferDesc->Buffer.Length)) |
246 | { |
247 | ACPI_ERROR ((AE_INFO, |
248 | "Field [%4.4s] at %u exceeds Buffer [%4.4s] size %u (bits)" , |
249 | AcpiUtGetNodeName (ResultDesc), |
250 | BitOffset + BitCount, |
251 | AcpiUtGetNodeName (BufferDesc->Buffer.Node), |
252 | 8 * (UINT32) BufferDesc->Buffer.Length)); |
253 | Status = AE_AML_BUFFER_LIMIT; |
254 | goto Cleanup; |
255 | } |
256 | |
257 | /* |
258 | * Initialize areas of the field object that are common to all fields |
259 | * For FieldFlags, use LOCK_RULE = 0 (NO_LOCK), |
260 | * UPDATE_RULE = 0 (UPDATE_PRESERVE) |
261 | */ |
262 | Status = AcpiExPrepCommonFieldObject ( |
263 | ObjDesc, FieldFlags, 0, BitOffset, BitCount); |
264 | if (ACPI_FAILURE (Status)) |
265 | { |
266 | goto Cleanup; |
267 | } |
268 | |
269 | ObjDesc->BufferField.BufferObj = BufferDesc; |
270 | |
271 | /* Reference count for BufferDesc inherits ObjDesc count */ |
272 | |
273 | BufferDesc->Common.ReferenceCount = (UINT16) |
274 | (BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount); |
275 | |
276 | |
277 | Cleanup: |
278 | |
279 | /* Always delete the operands */ |
280 | |
281 | AcpiUtRemoveReference (OffsetDesc); |
282 | AcpiUtRemoveReference (BufferDesc); |
283 | |
284 | if (AmlOpcode == AML_CREATE_FIELD_OP) |
285 | { |
286 | AcpiUtRemoveReference (LengthDesc); |
287 | } |
288 | |
289 | /* On failure, delete the result descriptor */ |
290 | |
291 | if (ACPI_FAILURE (Status)) |
292 | { |
293 | AcpiUtRemoveReference (ResultDesc); /* Result descriptor */ |
294 | } |
295 | else |
296 | { |
297 | /* Now the address and length are valid for this BufferField */ |
298 | |
299 | ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID; |
300 | } |
301 | |
302 | return_ACPI_STATUS (Status); |
303 | } |
304 | |
305 | |
306 | /******************************************************************************* |
307 | * |
308 | * FUNCTION: AcpiDsEvalBufferFieldOperands |
309 | * |
310 | * PARAMETERS: WalkState - Current walk |
311 | * Op - A valid BufferField Op object |
312 | * |
313 | * RETURN: Status |
314 | * |
315 | * DESCRIPTION: Get BufferField Buffer and Index |
316 | * Called from AcpiDsExecEndOp during BufferField parse tree walk |
317 | * |
318 | ******************************************************************************/ |
319 | |
320 | ACPI_STATUS |
321 | AcpiDsEvalBufferFieldOperands ( |
322 | ACPI_WALK_STATE *WalkState, |
323 | ACPI_PARSE_OBJECT *Op) |
324 | { |
325 | ACPI_STATUS Status; |
326 | ACPI_OPERAND_OBJECT *ObjDesc; |
327 | ACPI_NAMESPACE_NODE *Node; |
328 | ACPI_PARSE_OBJECT *NextOp; |
329 | |
330 | |
331 | ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op); |
332 | |
333 | |
334 | /* |
335 | * This is where we evaluate the address and length fields of the |
336 | * CreateXxxField declaration |
337 | */ |
338 | Node = Op->Common.Node; |
339 | |
340 | /* NextOp points to the op that holds the Buffer */ |
341 | |
342 | NextOp = Op->Common.Value.Arg; |
343 | |
344 | /* Evaluate/create the address and length operands */ |
345 | |
346 | Status = AcpiDsCreateOperands (WalkState, NextOp); |
347 | if (ACPI_FAILURE (Status)) |
348 | { |
349 | return_ACPI_STATUS (Status); |
350 | } |
351 | |
352 | ObjDesc = AcpiNsGetAttachedObject (Node); |
353 | if (!ObjDesc) |
354 | { |
355 | return_ACPI_STATUS (AE_NOT_EXIST); |
356 | } |
357 | |
358 | /* Resolve the operands */ |
359 | |
360 | Status = AcpiExResolveOperands ( |
361 | Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState); |
362 | if (ACPI_FAILURE (Status)) |
363 | { |
364 | ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X" , |
365 | AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status)); |
366 | |
367 | return_ACPI_STATUS (Status); |
368 | } |
369 | |
370 | /* Initialize the Buffer Field */ |
371 | |
372 | if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) |
373 | { |
374 | /* NOTE: Slightly different operands for this opcode */ |
375 | |
376 | Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc, |
377 | WalkState->Operands[0], WalkState->Operands[1], |
378 | WalkState->Operands[2], WalkState->Operands[3]); |
379 | } |
380 | else |
381 | { |
382 | /* All other, CreateXxxField opcodes */ |
383 | |
384 | Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc, |
385 | WalkState->Operands[0], WalkState->Operands[1], |
386 | NULL, WalkState->Operands[2]); |
387 | } |
388 | |
389 | return_ACPI_STATUS (Status); |
390 | } |
391 | |
392 | |
393 | /******************************************************************************* |
394 | * |
395 | * FUNCTION: AcpiDsEvalRegionOperands |
396 | * |
397 | * PARAMETERS: WalkState - Current walk |
398 | * Op - A valid region Op object |
399 | * |
400 | * RETURN: Status |
401 | * |
402 | * DESCRIPTION: Get region address and length |
403 | * Called from AcpiDsExecEndOp during OpRegion parse tree walk |
404 | * |
405 | ******************************************************************************/ |
406 | |
407 | ACPI_STATUS |
408 | AcpiDsEvalRegionOperands ( |
409 | ACPI_WALK_STATE *WalkState, |
410 | ACPI_PARSE_OBJECT *Op) |
411 | { |
412 | ACPI_STATUS Status; |
413 | ACPI_OPERAND_OBJECT *ObjDesc; |
414 | ACPI_OPERAND_OBJECT *OperandDesc; |
415 | ACPI_NAMESPACE_NODE *Node; |
416 | ACPI_PARSE_OBJECT *NextOp; |
417 | |
418 | |
419 | ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op); |
420 | |
421 | |
422 | /* |
423 | * This is where we evaluate the address and length fields of the |
424 | * OpRegion declaration |
425 | */ |
426 | Node = Op->Common.Node; |
427 | |
428 | /* NextOp points to the op that holds the SpaceID */ |
429 | |
430 | NextOp = Op->Common.Value.Arg; |
431 | |
432 | /* NextOp points to address op */ |
433 | |
434 | NextOp = NextOp->Common.Next; |
435 | |
436 | /* Evaluate/create the address and length operands */ |
437 | |
438 | Status = AcpiDsCreateOperands (WalkState, NextOp); |
439 | if (ACPI_FAILURE (Status)) |
440 | { |
441 | return_ACPI_STATUS (Status); |
442 | } |
443 | |
444 | /* Resolve the length and address operands to numbers */ |
445 | |
446 | Status = AcpiExResolveOperands ( |
447 | Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState); |
448 | if (ACPI_FAILURE (Status)) |
449 | { |
450 | return_ACPI_STATUS (Status); |
451 | } |
452 | |
453 | ObjDesc = AcpiNsGetAttachedObject (Node); |
454 | if (!ObjDesc) |
455 | { |
456 | return_ACPI_STATUS (AE_NOT_EXIST); |
457 | } |
458 | |
459 | /* |
460 | * Get the length operand and save it |
461 | * (at Top of stack) |
462 | */ |
463 | OperandDesc = WalkState->Operands[WalkState->NumOperands - 1]; |
464 | |
465 | ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value; |
466 | AcpiUtRemoveReference (OperandDesc); |
467 | |
468 | /* |
469 | * Get the address and save it |
470 | * (at top of stack - 1) |
471 | */ |
472 | OperandDesc = WalkState->Operands[WalkState->NumOperands - 2]; |
473 | |
474 | ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) |
475 | OperandDesc->Integer.Value; |
476 | AcpiUtRemoveReference (OperandDesc); |
477 | |
478 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n" , |
479 | ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address), |
480 | ObjDesc->Region.Length)); |
481 | |
482 | /* Now the address and length are valid for this opregion */ |
483 | |
484 | ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID; |
485 | return_ACPI_STATUS (Status); |
486 | } |
487 | |
488 | |
489 | /******************************************************************************* |
490 | * |
491 | * FUNCTION: AcpiDsEvalTableRegionOperands |
492 | * |
493 | * PARAMETERS: WalkState - Current walk |
494 | * Op - A valid region Op object |
495 | * |
496 | * RETURN: Status |
497 | * |
498 | * DESCRIPTION: Get region address and length. |
499 | * Called from AcpiDsExecEndOp during DataTableRegion parse |
500 | * tree walk. |
501 | * |
502 | ******************************************************************************/ |
503 | |
504 | ACPI_STATUS |
505 | AcpiDsEvalTableRegionOperands ( |
506 | ACPI_WALK_STATE *WalkState, |
507 | ACPI_PARSE_OBJECT *Op) |
508 | { |
509 | ACPI_STATUS Status; |
510 | ACPI_OPERAND_OBJECT *ObjDesc; |
511 | ACPI_OPERAND_OBJECT **Operand; |
512 | ACPI_NAMESPACE_NODE *Node; |
513 | ACPI_PARSE_OBJECT *NextOp; |
514 | ACPI_TABLE_HEADER *Table; |
515 | UINT32 TableIndex; |
516 | |
517 | |
518 | ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op); |
519 | |
520 | |
521 | /* |
522 | * This is where we evaluate the Signature string, OemId string, |
523 | * and OemTableId string of the Data Table Region declaration |
524 | */ |
525 | Node = Op->Common.Node; |
526 | |
527 | /* NextOp points to Signature string op */ |
528 | |
529 | NextOp = Op->Common.Value.Arg; |
530 | |
531 | /* |
532 | * Evaluate/create the Signature string, OemId string, |
533 | * and OemTableId string operands |
534 | */ |
535 | Status = AcpiDsCreateOperands (WalkState, NextOp); |
536 | if (ACPI_FAILURE (Status)) |
537 | { |
538 | return_ACPI_STATUS (Status); |
539 | } |
540 | |
541 | Operand = &WalkState->Operands[0]; |
542 | |
543 | /* |
544 | * Resolve the Signature string, OemId string, |
545 | * and OemTableId string operands |
546 | */ |
547 | Status = AcpiExResolveOperands ( |
548 | Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState); |
549 | if (ACPI_FAILURE (Status)) |
550 | { |
551 | goto Cleanup; |
552 | } |
553 | |
554 | /* Find the ACPI table */ |
555 | |
556 | Status = AcpiTbFindTable ( |
557 | Operand[0]->String.Pointer, |
558 | Operand[1]->String.Pointer, |
559 | Operand[2]->String.Pointer, &TableIndex); |
560 | if (ACPI_FAILURE (Status)) |
561 | { |
562 | if (Status == AE_NOT_FOUND) |
563 | { |
564 | ACPI_ERROR ((AE_INFO, |
565 | "ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT" , |
566 | Operand[0]->String.Pointer, |
567 | Operand[1]->String.Pointer, |
568 | Operand[2]->String.Pointer)); |
569 | } |
570 | goto Cleanup; |
571 | } |
572 | |
573 | Status = AcpiGetTableByIndex (TableIndex, &Table); |
574 | if (ACPI_FAILURE (Status)) |
575 | { |
576 | goto Cleanup; |
577 | } |
578 | |
579 | ObjDesc = AcpiNsGetAttachedObject (Node); |
580 | if (!ObjDesc) |
581 | { |
582 | Status = AE_NOT_EXIST; |
583 | goto Cleanup; |
584 | } |
585 | |
586 | ObjDesc->Region.Address = ACPI_PTR_TO_PHYSADDR (Table); |
587 | ObjDesc->Region.Length = Table->Length; |
588 | |
589 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n" , |
590 | ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address), |
591 | ObjDesc->Region.Length)); |
592 | |
593 | /* Now the address and length are valid for this opregion */ |
594 | |
595 | ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID; |
596 | |
597 | Cleanup: |
598 | AcpiUtRemoveReference (Operand[0]); |
599 | AcpiUtRemoveReference (Operand[1]); |
600 | AcpiUtRemoveReference (Operand[2]); |
601 | |
602 | return_ACPI_STATUS (Status); |
603 | } |
604 | |
605 | |
606 | /******************************************************************************* |
607 | * |
608 | * FUNCTION: AcpiDsEvalDataObjectOperands |
609 | * |
610 | * PARAMETERS: WalkState - Current walk |
611 | * Op - A valid DataObject Op object |
612 | * ObjDesc - DataObject |
613 | * |
614 | * RETURN: Status |
615 | * |
616 | * DESCRIPTION: Get the operands and complete the following data object types: |
617 | * Buffer, Package. |
618 | * |
619 | ******************************************************************************/ |
620 | |
621 | ACPI_STATUS |
622 | AcpiDsEvalDataObjectOperands ( |
623 | ACPI_WALK_STATE *WalkState, |
624 | ACPI_PARSE_OBJECT *Op, |
625 | ACPI_OPERAND_OBJECT *ObjDesc) |
626 | { |
627 | ACPI_STATUS Status; |
628 | ACPI_OPERAND_OBJECT *ArgDesc; |
629 | UINT32 Length; |
630 | |
631 | |
632 | ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands); |
633 | |
634 | |
635 | /* The first operand (for all of these data objects) is the length */ |
636 | |
637 | /* |
638 | * Set proper index into operand stack for AcpiDsObjStackPush |
639 | * invoked inside AcpiDsCreateOperand. |
640 | */ |
641 | WalkState->OperandIndex = WalkState->NumOperands; |
642 | |
643 | Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1); |
644 | if (ACPI_FAILURE (Status)) |
645 | { |
646 | return_ACPI_STATUS (Status); |
647 | } |
648 | |
649 | Status = AcpiExResolveOperands (WalkState->Opcode, |
650 | &(WalkState->Operands [WalkState->NumOperands -1]), |
651 | WalkState); |
652 | if (ACPI_FAILURE (Status)) |
653 | { |
654 | return_ACPI_STATUS (Status); |
655 | } |
656 | |
657 | /* Extract length operand */ |
658 | |
659 | ArgDesc = WalkState->Operands [WalkState->NumOperands - 1]; |
660 | Length = (UINT32) ArgDesc->Integer.Value; |
661 | |
662 | /* Cleanup for length operand */ |
663 | |
664 | Status = AcpiDsObjStackPop (1, WalkState); |
665 | if (ACPI_FAILURE (Status)) |
666 | { |
667 | return_ACPI_STATUS (Status); |
668 | } |
669 | |
670 | AcpiUtRemoveReference (ArgDesc); |
671 | |
672 | /* |
673 | * Create the actual data object |
674 | */ |
675 | switch (Op->Common.AmlOpcode) |
676 | { |
677 | case AML_BUFFER_OP: |
678 | |
679 | Status = AcpiDsBuildInternalBufferObj ( |
680 | WalkState, Op, Length, &ObjDesc); |
681 | break; |
682 | |
683 | case AML_PACKAGE_OP: |
684 | case AML_VAR_PACKAGE_OP: |
685 | |
686 | Status = AcpiDsBuildInternalPackageObj ( |
687 | WalkState, Op, Length, &ObjDesc); |
688 | break; |
689 | |
690 | default: |
691 | |
692 | return_ACPI_STATUS (AE_AML_BAD_OPCODE); |
693 | } |
694 | |
695 | if (ACPI_SUCCESS (Status)) |
696 | { |
697 | /* |
698 | * Return the object in the WalkState, unless the parent is a package - |
699 | * in this case, the return object will be stored in the parse tree |
700 | * for the package. |
701 | */ |
702 | if ((!Op->Common.Parent) || |
703 | ((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) && |
704 | (Op->Common.Parent->Common.AmlOpcode != AML_VAR_PACKAGE_OP) && |
705 | (Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP))) |
706 | { |
707 | WalkState->ResultObj = ObjDesc; |
708 | } |
709 | } |
710 | |
711 | return_ACPI_STATUS (Status); |
712 | } |
713 | |
714 | |
715 | /******************************************************************************* |
716 | * |
717 | * FUNCTION: AcpiDsEvalBankFieldOperands |
718 | * |
719 | * PARAMETERS: WalkState - Current walk |
720 | * Op - A valid BankField Op object |
721 | * |
722 | * RETURN: Status |
723 | * |
724 | * DESCRIPTION: Get BankField BankValue |
725 | * Called from AcpiDsExecEndOp during BankField parse tree walk |
726 | * |
727 | ******************************************************************************/ |
728 | |
729 | ACPI_STATUS |
730 | AcpiDsEvalBankFieldOperands ( |
731 | ACPI_WALK_STATE *WalkState, |
732 | ACPI_PARSE_OBJECT *Op) |
733 | { |
734 | ACPI_STATUS Status; |
735 | ACPI_OPERAND_OBJECT *ObjDesc; |
736 | ACPI_OPERAND_OBJECT *OperandDesc; |
737 | ACPI_NAMESPACE_NODE *Node; |
738 | ACPI_PARSE_OBJECT *NextOp; |
739 | ACPI_PARSE_OBJECT *Arg; |
740 | |
741 | |
742 | ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op); |
743 | |
744 | |
745 | /* |
746 | * This is where we evaluate the BankValue field of the |
747 | * BankField declaration |
748 | */ |
749 | |
750 | /* NextOp points to the op that holds the Region */ |
751 | |
752 | NextOp = Op->Common.Value.Arg; |
753 | |
754 | /* NextOp points to the op that holds the Bank Register */ |
755 | |
756 | NextOp = NextOp->Common.Next; |
757 | |
758 | /* NextOp points to the op that holds the Bank Value */ |
759 | |
760 | NextOp = NextOp->Common.Next; |
761 | |
762 | /* |
763 | * Set proper index into operand stack for AcpiDsObjStackPush |
764 | * invoked inside AcpiDsCreateOperand. |
765 | * |
766 | * We use WalkState->Operands[0] to store the evaluated BankValue |
767 | */ |
768 | WalkState->OperandIndex = 0; |
769 | |
770 | Status = AcpiDsCreateOperand (WalkState, NextOp, 0); |
771 | if (ACPI_FAILURE (Status)) |
772 | { |
773 | return_ACPI_STATUS (Status); |
774 | } |
775 | |
776 | Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState); |
777 | if (ACPI_FAILURE (Status)) |
778 | { |
779 | return_ACPI_STATUS (Status); |
780 | } |
781 | |
782 | ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, |
783 | AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1); |
784 | /* |
785 | * Get the BankValue operand and save it |
786 | * (at Top of stack) |
787 | */ |
788 | OperandDesc = WalkState->Operands[0]; |
789 | |
790 | /* Arg points to the start Bank Field */ |
791 | |
792 | Arg = AcpiPsGetArg (Op, 4); |
793 | while (Arg) |
794 | { |
795 | /* Ignore OFFSET and ACCESSAS terms here */ |
796 | |
797 | if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) |
798 | { |
799 | Node = Arg->Common.Node; |
800 | |
801 | ObjDesc = AcpiNsGetAttachedObject (Node); |
802 | if (!ObjDesc) |
803 | { |
804 | return_ACPI_STATUS (AE_NOT_EXIST); |
805 | } |
806 | |
807 | ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value; |
808 | } |
809 | |
810 | /* Move to next field in the list */ |
811 | |
812 | Arg = Arg->Common.Next; |
813 | } |
814 | |
815 | AcpiUtRemoveReference (OperandDesc); |
816 | return_ACPI_STATUS (Status); |
817 | } |
818 | |