1 | /****************************************************************************** |
2 | * |
3 | * Module Name: hwxface - Public ACPICA hardware interfaces |
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 | #define EXPORT_ACPI_INTERFACES |
45 | |
46 | #include "acpi.h" |
47 | #include "accommon.h" |
48 | #include "acnamesp.h" |
49 | |
50 | #define _COMPONENT ACPI_HARDWARE |
51 | ACPI_MODULE_NAME ("hwxface" ) |
52 | |
53 | |
54 | /****************************************************************************** |
55 | * |
56 | * FUNCTION: AcpiReset |
57 | * |
58 | * PARAMETERS: None |
59 | * |
60 | * RETURN: Status |
61 | * |
62 | * DESCRIPTION: Set reset register in memory or IO space. Note: Does not |
63 | * support reset register in PCI config space, this must be |
64 | * handled separately. |
65 | * |
66 | ******************************************************************************/ |
67 | |
68 | ACPI_STATUS |
69 | AcpiReset ( |
70 | void) |
71 | { |
72 | ACPI_GENERIC_ADDRESS *ResetReg; |
73 | ACPI_STATUS Status; |
74 | |
75 | |
76 | ACPI_FUNCTION_TRACE (AcpiReset); |
77 | |
78 | |
79 | ResetReg = &AcpiGbl_FADT.ResetRegister; |
80 | |
81 | /* Check if the reset register is supported */ |
82 | |
83 | if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || |
84 | !ResetReg->Address) |
85 | { |
86 | return_ACPI_STATUS (AE_NOT_EXIST); |
87 | } |
88 | |
89 | if (ResetReg->SpaceId == ACPI_ADR_SPACE_SYSTEM_IO) |
90 | { |
91 | /* |
92 | * For I/O space, write directly to the OSL. This bypasses the port |
93 | * validation mechanism, which may block a valid write to the reset |
94 | * register. |
95 | * |
96 | * NOTE: |
97 | * The ACPI spec requires the reset register width to be 8, so we |
98 | * hardcode it here and ignore the FADT value. This maintains |
99 | * compatibility with other ACPI implementations that have allowed |
100 | * BIOS code with bad register width values to go unnoticed. |
101 | */ |
102 | Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) ResetReg->Address, |
103 | AcpiGbl_FADT.ResetValue, ACPI_RESET_REGISTER_WIDTH); |
104 | } |
105 | else |
106 | { |
107 | /* Write the reset value to the reset register */ |
108 | |
109 | Status = AcpiHwWrite (AcpiGbl_FADT.ResetValue, ResetReg); |
110 | } |
111 | |
112 | return_ACPI_STATUS (Status); |
113 | } |
114 | |
115 | ACPI_EXPORT_SYMBOL (AcpiReset) |
116 | |
117 | |
118 | /****************************************************************************** |
119 | * |
120 | * FUNCTION: AcpiRead |
121 | * |
122 | * PARAMETERS: Value - Where the value is returned |
123 | * Reg - GAS register structure |
124 | * |
125 | * RETURN: Status |
126 | * |
127 | * DESCRIPTION: Read from either memory or IO space. |
128 | * |
129 | * LIMITATIONS: <These limitations also apply to AcpiWrite> |
130 | * BitWidth must be exactly 8, 16, 32, or 64. |
131 | * SpaceID must be SystemMemory or SystemIO. |
132 | * BitOffset and AccessWidth are currently ignored, as there has |
133 | * not been a need to implement these. |
134 | * |
135 | ******************************************************************************/ |
136 | |
137 | ACPI_STATUS |
138 | AcpiRead ( |
139 | UINT64 *ReturnValue, |
140 | ACPI_GENERIC_ADDRESS *Reg) |
141 | { |
142 | UINT32 ValueLo; |
143 | UINT32 ValueHi; |
144 | UINT32 Width; |
145 | UINT64 Address; |
146 | ACPI_STATUS Status; |
147 | |
148 | |
149 | ACPI_FUNCTION_NAME (AcpiRead); |
150 | |
151 | |
152 | if (!ReturnValue) |
153 | { |
154 | return (AE_BAD_PARAMETER); |
155 | } |
156 | |
157 | /* Validate contents of the GAS register. Allow 64-bit transfers */ |
158 | |
159 | Status = AcpiHwValidateRegister (Reg, 64, &Address); |
160 | if (ACPI_FAILURE (Status)) |
161 | { |
162 | return (Status); |
163 | } |
164 | |
165 | /* |
166 | * Two address spaces supported: Memory or I/O. PCI_Config is |
167 | * not supported here because the GAS structure is insufficient |
168 | */ |
169 | if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
170 | { |
171 | Status = AcpiOsReadMemory ((ACPI_PHYSICAL_ADDRESS) |
172 | Address, ReturnValue, Reg->BitWidth); |
173 | if (ACPI_FAILURE (Status)) |
174 | { |
175 | return (Status); |
176 | } |
177 | } |
178 | else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ |
179 | { |
180 | ValueLo = 0; |
181 | ValueHi = 0; |
182 | |
183 | Width = Reg->BitWidth; |
184 | if (Width == 64) |
185 | { |
186 | Width = 32; /* Break into two 32-bit transfers */ |
187 | } |
188 | |
189 | Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) |
190 | Address, &ValueLo, Width); |
191 | if (ACPI_FAILURE (Status)) |
192 | { |
193 | return (Status); |
194 | } |
195 | |
196 | if (Reg->BitWidth == 64) |
197 | { |
198 | /* Read the top 32 bits */ |
199 | |
200 | Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) |
201 | (Address + 4), &ValueHi, 32); |
202 | if (ACPI_FAILURE (Status)) |
203 | { |
204 | return (Status); |
205 | } |
206 | } |
207 | |
208 | /* Set the return value only if status is AE_OK */ |
209 | |
210 | *ReturnValue = (ValueLo | ((UINT64) ValueHi << 32)); |
211 | } |
212 | |
213 | ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
214 | "Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n" , |
215 | ACPI_FORMAT_UINT64 (*ReturnValue), Reg->BitWidth, |
216 | ACPI_FORMAT_UINT64 (Address), |
217 | AcpiUtGetRegionName (Reg->SpaceId))); |
218 | |
219 | return (AE_OK); |
220 | } |
221 | |
222 | ACPI_EXPORT_SYMBOL (AcpiRead) |
223 | |
224 | |
225 | /****************************************************************************** |
226 | * |
227 | * FUNCTION: AcpiWrite |
228 | * |
229 | * PARAMETERS: Value - Value to be written |
230 | * Reg - GAS register structure |
231 | * |
232 | * RETURN: Status |
233 | * |
234 | * DESCRIPTION: Write to either memory or IO space. |
235 | * |
236 | ******************************************************************************/ |
237 | |
238 | ACPI_STATUS |
239 | AcpiWrite ( |
240 | UINT64 Value, |
241 | ACPI_GENERIC_ADDRESS *Reg) |
242 | { |
243 | UINT32 Width; |
244 | UINT64 Address; |
245 | ACPI_STATUS Status; |
246 | |
247 | |
248 | ACPI_FUNCTION_NAME (AcpiWrite); |
249 | |
250 | |
251 | /* Validate contents of the GAS register. Allow 64-bit transfers */ |
252 | |
253 | Status = AcpiHwValidateRegister (Reg, 64, &Address); |
254 | if (ACPI_FAILURE (Status)) |
255 | { |
256 | return (Status); |
257 | } |
258 | |
259 | /* |
260 | * Two address spaces supported: Memory or IO. PCI_Config is |
261 | * not supported here because the GAS structure is insufficient |
262 | */ |
263 | if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
264 | { |
265 | Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) |
266 | Address, Value, Reg->BitWidth); |
267 | if (ACPI_FAILURE (Status)) |
268 | { |
269 | return (Status); |
270 | } |
271 | } |
272 | else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ |
273 | { |
274 | Width = Reg->BitWidth; |
275 | if (Width == 64) |
276 | { |
277 | Width = 32; /* Break into two 32-bit transfers */ |
278 | } |
279 | |
280 | Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) |
281 | Address, ACPI_LODWORD (Value), Width); |
282 | if (ACPI_FAILURE (Status)) |
283 | { |
284 | return (Status); |
285 | } |
286 | |
287 | if (Reg->BitWidth == 64) |
288 | { |
289 | Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) |
290 | (Address + 4), ACPI_HIDWORD (Value), 32); |
291 | if (ACPI_FAILURE (Status)) |
292 | { |
293 | return (Status); |
294 | } |
295 | } |
296 | } |
297 | |
298 | ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
299 | "Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n" , |
300 | ACPI_FORMAT_UINT64 (Value), Reg->BitWidth, |
301 | ACPI_FORMAT_UINT64 (Address), |
302 | AcpiUtGetRegionName (Reg->SpaceId))); |
303 | |
304 | return (Status); |
305 | } |
306 | |
307 | ACPI_EXPORT_SYMBOL (AcpiWrite) |
308 | |
309 | |
310 | #if (!ACPI_REDUCED_HARDWARE) |
311 | /******************************************************************************* |
312 | * |
313 | * FUNCTION: AcpiReadBitRegister |
314 | * |
315 | * PARAMETERS: RegisterId - ID of ACPI Bit Register to access |
316 | * ReturnValue - Value that was read from the register, |
317 | * normalized to bit position zero. |
318 | * |
319 | * RETURN: Status and the value read from the specified Register. Value |
320 | * returned is normalized to bit0 (is shifted all the way right) |
321 | * |
322 | * DESCRIPTION: ACPI BitRegister read function. Does not acquire the HW lock. |
323 | * |
324 | * SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and |
325 | * PM2 Control. |
326 | * |
327 | * Note: The hardware lock is not required when reading the ACPI bit registers |
328 | * since almost all of them are single bit and it does not matter that |
329 | * the parent hardware register can be split across two physical |
330 | * registers. The only multi-bit field is SLP_TYP in the PM1 control |
331 | * register, but this field does not cross an 8-bit boundary (nor does |
332 | * it make much sense to actually read this field.) |
333 | * |
334 | ******************************************************************************/ |
335 | |
336 | ACPI_STATUS |
337 | AcpiReadBitRegister ( |
338 | UINT32 RegisterId, |
339 | UINT32 *ReturnValue) |
340 | { |
341 | ACPI_BIT_REGISTER_INFO *BitRegInfo; |
342 | UINT32 RegisterValue; |
343 | UINT32 Value; |
344 | ACPI_STATUS Status; |
345 | |
346 | |
347 | ACPI_FUNCTION_TRACE_U32 (AcpiReadBitRegister, RegisterId); |
348 | |
349 | |
350 | /* Get the info structure corresponding to the requested ACPI Register */ |
351 | |
352 | BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId); |
353 | if (!BitRegInfo) |
354 | { |
355 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
356 | } |
357 | |
358 | /* Read the entire parent register */ |
359 | |
360 | Status = AcpiHwRegisterRead (BitRegInfo->ParentRegister, |
361 | &RegisterValue); |
362 | if (ACPI_FAILURE (Status)) |
363 | { |
364 | return_ACPI_STATUS (Status); |
365 | } |
366 | |
367 | /* Normalize the value that was read, mask off other bits */ |
368 | |
369 | Value = ((RegisterValue & BitRegInfo->AccessBitMask) |
370 | >> BitRegInfo->BitPosition); |
371 | |
372 | ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
373 | "BitReg %X, ParentReg %X, Actual %8.8X, ReturnValue %8.8X\n" , |
374 | RegisterId, BitRegInfo->ParentRegister, RegisterValue, Value)); |
375 | |
376 | *ReturnValue = Value; |
377 | return_ACPI_STATUS (AE_OK); |
378 | } |
379 | |
380 | ACPI_EXPORT_SYMBOL (AcpiReadBitRegister) |
381 | |
382 | |
383 | /******************************************************************************* |
384 | * |
385 | * FUNCTION: AcpiWriteBitRegister |
386 | * |
387 | * PARAMETERS: RegisterId - ID of ACPI Bit Register to access |
388 | * Value - Value to write to the register, in bit |
389 | * position zero. The bit is automatically |
390 | * shifted to the correct position. |
391 | * |
392 | * RETURN: Status |
393 | * |
394 | * DESCRIPTION: ACPI Bit Register write function. Acquires the hardware lock |
395 | * since most operations require a read/modify/write sequence. |
396 | * |
397 | * SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and |
398 | * PM2 Control. |
399 | * |
400 | * Note that at this level, the fact that there may be actually two |
401 | * hardware registers (A and B - and B may not exist) is abstracted. |
402 | * |
403 | ******************************************************************************/ |
404 | |
405 | ACPI_STATUS |
406 | AcpiWriteBitRegister ( |
407 | UINT32 RegisterId, |
408 | UINT32 Value) |
409 | { |
410 | ACPI_BIT_REGISTER_INFO *BitRegInfo; |
411 | ACPI_CPU_FLAGS LockFlags; |
412 | UINT32 RegisterValue; |
413 | ACPI_STATUS Status = AE_OK; |
414 | |
415 | |
416 | ACPI_FUNCTION_TRACE_U32 (AcpiWriteBitRegister, RegisterId); |
417 | |
418 | |
419 | /* Get the info structure corresponding to the requested ACPI Register */ |
420 | |
421 | BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId); |
422 | if (!BitRegInfo) |
423 | { |
424 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
425 | } |
426 | |
427 | LockFlags = AcpiOsAcquireLock (AcpiGbl_HardwareLock); |
428 | |
429 | /* |
430 | * At this point, we know that the parent register is one of the |
431 | * following: PM1 Status, PM1 Enable, PM1 Control, or PM2 Control |
432 | */ |
433 | if (BitRegInfo->ParentRegister != ACPI_REGISTER_PM1_STATUS) |
434 | { |
435 | /* |
436 | * 1) Case for PM1 Enable, PM1 Control, and PM2 Control |
437 | * |
438 | * Perform a register read to preserve the bits that we are not |
439 | * interested in |
440 | */ |
441 | Status = AcpiHwRegisterRead (BitRegInfo->ParentRegister, |
442 | &RegisterValue); |
443 | if (ACPI_FAILURE (Status)) |
444 | { |
445 | goto UnlockAndExit; |
446 | } |
447 | |
448 | /* |
449 | * Insert the input bit into the value that was just read |
450 | * and write the register |
451 | */ |
452 | ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition, |
453 | BitRegInfo->AccessBitMask, Value); |
454 | |
455 | Status = AcpiHwRegisterWrite (BitRegInfo->ParentRegister, |
456 | RegisterValue); |
457 | } |
458 | else |
459 | { |
460 | /* |
461 | * 2) Case for PM1 Status |
462 | * |
463 | * The Status register is different from the rest. Clear an event |
464 | * by writing 1, writing 0 has no effect. So, the only relevant |
465 | * information is the single bit we're interested in, all others |
466 | * should be written as 0 so they will be left unchanged. |
467 | */ |
468 | RegisterValue = ACPI_REGISTER_PREPARE_BITS (Value, |
469 | BitRegInfo->BitPosition, BitRegInfo->AccessBitMask); |
470 | |
471 | /* No need to write the register if value is all zeros */ |
472 | |
473 | if (RegisterValue) |
474 | { |
475 | Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_STATUS, |
476 | RegisterValue); |
477 | } |
478 | } |
479 | |
480 | ACPI_DEBUG_PRINT ((ACPI_DB_IO, |
481 | "BitReg %X, ParentReg %X, Value %8.8X, Actual %8.8X\n" , |
482 | RegisterId, BitRegInfo->ParentRegister, Value, RegisterValue)); |
483 | |
484 | |
485 | UnlockAndExit: |
486 | |
487 | AcpiOsReleaseLock (AcpiGbl_HardwareLock, LockFlags); |
488 | return_ACPI_STATUS (Status); |
489 | } |
490 | |
491 | ACPI_EXPORT_SYMBOL (AcpiWriteBitRegister) |
492 | |
493 | #endif /* !ACPI_REDUCED_HARDWARE */ |
494 | |
495 | |
496 | /******************************************************************************* |
497 | * |
498 | * FUNCTION: AcpiGetSleepTypeData |
499 | * |
500 | * PARAMETERS: SleepState - Numeric sleep state |
501 | * *SleepTypeA - Where SLP_TYPa is returned |
502 | * *SleepTypeB - Where SLP_TYPb is returned |
503 | * |
504 | * RETURN: Status |
505 | * |
506 | * DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested |
507 | * sleep state via the appropriate \_Sx object. |
508 | * |
509 | * The sleep state package returned from the corresponding \_Sx_ object |
510 | * must contain at least one integer. |
511 | * |
512 | * March 2005: |
513 | * Added support for a package that contains two integers. This |
514 | * goes against the ACPI specification which defines this object as a |
515 | * package with one encoded DWORD integer. However, existing practice |
516 | * by many BIOS vendors is to return a package with 2 or more integer |
517 | * elements, at least one per sleep type (A/B). |
518 | * |
519 | * January 2013: |
520 | * Therefore, we must be prepared to accept a package with either a |
521 | * single integer or multiple integers. |
522 | * |
523 | * The single integer DWORD format is as follows: |
524 | * BYTE 0 - Value for the PM1A SLP_TYP register |
525 | * BYTE 1 - Value for the PM1B SLP_TYP register |
526 | * BYTE 2-3 - Reserved |
527 | * |
528 | * The dual integer format is as follows: |
529 | * Integer 0 - Value for the PM1A SLP_TYP register |
530 | * Integer 1 - Value for the PM1A SLP_TYP register |
531 | * |
532 | ******************************************************************************/ |
533 | |
534 | ACPI_STATUS |
535 | AcpiGetSleepTypeData ( |
536 | UINT8 SleepState, |
537 | UINT8 *SleepTypeA, |
538 | UINT8 *SleepTypeB) |
539 | { |
540 | ACPI_STATUS Status; |
541 | ACPI_EVALUATE_INFO *Info; |
542 | ACPI_OPERAND_OBJECT **Elements; |
543 | |
544 | |
545 | ACPI_FUNCTION_TRACE (AcpiGetSleepTypeData); |
546 | |
547 | |
548 | /* Validate parameters */ |
549 | |
550 | if ((SleepState > ACPI_S_STATES_MAX) || |
551 | !SleepTypeA || !SleepTypeB) |
552 | { |
553 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
554 | } |
555 | |
556 | /* Allocate the evaluation information block */ |
557 | |
558 | Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); |
559 | if (!Info) |
560 | { |
561 | return_ACPI_STATUS (AE_NO_MEMORY); |
562 | } |
563 | |
564 | /* |
565 | * Evaluate the \_Sx namespace object containing the register values |
566 | * for this state |
567 | */ |
568 | Info->RelativePathname = AcpiGbl_SleepStateNames[SleepState]; |
569 | |
570 | Status = AcpiNsEvaluate (Info); |
571 | if (ACPI_FAILURE (Status)) |
572 | { |
573 | if (Status == AE_NOT_FOUND) |
574 | { |
575 | /* The _Sx states are optional, ignore NOT_FOUND */ |
576 | |
577 | goto FinalCleanup; |
578 | } |
579 | |
580 | goto WarningCleanup; |
581 | } |
582 | |
583 | /* Must have a return object */ |
584 | |
585 | if (!Info->ReturnObject) |
586 | { |
587 | ACPI_ERROR ((AE_INFO, "No Sleep State object returned from [%s]" , |
588 | Info->RelativePathname)); |
589 | Status = AE_AML_NO_RETURN_VALUE; |
590 | goto WarningCleanup; |
591 | } |
592 | |
593 | /* Return object must be of type Package */ |
594 | |
595 | if (Info->ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) |
596 | { |
597 | ACPI_ERROR ((AE_INFO, "Sleep State return object is not a Package" )); |
598 | Status = AE_AML_OPERAND_TYPE; |
599 | goto ReturnValueCleanup; |
600 | } |
601 | |
602 | /* |
603 | * Any warnings about the package length or the object types have |
604 | * already been issued by the predefined name module -- there is no |
605 | * need to repeat them here. |
606 | */ |
607 | Elements = Info->ReturnObject->Package.Elements; |
608 | switch (Info->ReturnObject->Package.Count) |
609 | { |
610 | case 0: |
611 | |
612 | Status = AE_AML_PACKAGE_LIMIT; |
613 | break; |
614 | |
615 | case 1: |
616 | |
617 | if (Elements[0]->Common.Type != ACPI_TYPE_INTEGER) |
618 | { |
619 | Status = AE_AML_OPERAND_TYPE; |
620 | break; |
621 | } |
622 | |
623 | /* A valid _Sx_ package with one integer */ |
624 | |
625 | *SleepTypeA = (UINT8) Elements[0]->Integer.Value; |
626 | *SleepTypeB = (UINT8) (Elements[0]->Integer.Value >> 8); |
627 | break; |
628 | |
629 | case 2: |
630 | default: |
631 | |
632 | if ((Elements[0]->Common.Type != ACPI_TYPE_INTEGER) || |
633 | (Elements[1]->Common.Type != ACPI_TYPE_INTEGER)) |
634 | { |
635 | Status = AE_AML_OPERAND_TYPE; |
636 | break; |
637 | } |
638 | |
639 | /* A valid _Sx_ package with two integers */ |
640 | |
641 | *SleepTypeA = (UINT8) Elements[0]->Integer.Value; |
642 | *SleepTypeB = (UINT8) Elements[1]->Integer.Value; |
643 | break; |
644 | } |
645 | |
646 | ReturnValueCleanup: |
647 | AcpiUtRemoveReference (Info->ReturnObject); |
648 | |
649 | WarningCleanup: |
650 | if (ACPI_FAILURE (Status)) |
651 | { |
652 | ACPI_EXCEPTION ((AE_INFO, Status, |
653 | "While evaluating Sleep State [%s]" , |
654 | Info->RelativePathname)); |
655 | } |
656 | |
657 | FinalCleanup: |
658 | ACPI_FREE (Info); |
659 | return_ACPI_STATUS (Status); |
660 | } |
661 | |
662 | ACPI_EXPORT_SYMBOL (AcpiGetSleepTypeData) |
663 | |