hwsleep.c revision 151600
195212Sbde 264880Sphk/****************************************************************************** 364880Sphk * 464880Sphk * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface 564880Sphk * $Revision: 70 $ 6100206Sdd * 7100206Sdd *****************************************************************************/ 864880Sphk 964880Sphk/****************************************************************************** 1064880Sphk * 1164880Sphk * 1. Copyright Notice 1264880Sphk * 1364880Sphk * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp. 1464880Sphk * All rights reserved. 1564880Sphk * 1664880Sphk * 2. License 1764880Sphk * 1864880Sphk * 2.1. This is your license from Intel Corp. under its intellectual property 1964880Sphk * rights. You may have additional license terms from the party that provided 2064880Sphk * you this software, covering your right to use that party's intellectual 2164880Sphk * property rights. 2264880Sphk * 2364880Sphk * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2464880Sphk * copy of the source code appearing in this file ("Covered Code") an 2564880Sphk * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2664880Sphk * base code distributed originally by Intel ("Original Intel Code") to copy, 2764880Sphk * make derivatives, distribute, use and display any portion of the Covered 2864880Sphk * Code in any form, with the right to sublicense such rights; and 2964880Sphk * 3064880Sphk * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3164880Sphk * license (with the right to sublicense), under only those claims of Intel 3264880Sphk * patents that are infringed by the Original Intel Code, to make, use, sell, 3364880Sphk * offer to sell, and import the Covered Code and derivative works thereof 3464880Sphk * solely to the minimum extent necessary to exercise the above copyright 3564880Sphk * license, and in no event shall the patent license extend to any additions 3664880Sphk * to or modifications of the Original Intel Code. No other license or right 3764880Sphk * is granted directly or by implication, estoppel or otherwise; 3864880Sphk * 3965515Sphk * The above copyright and patent license is granted only if the following 4095212Sbde * conditions are met: 4164880Sphk * 42100206Sdd * 3. Conditions 4364880Sphk * 4465515Sphk * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45100206Sdd * Redistribution of source code of any substantial portion of the Covered 46100206Sdd * Code or modification with rights to further distribute source must include 47100206Sdd * the above Copyright Notice, the above License, this list of Conditions, 48100206Sdd * and the following Disclaimer and Export Compliance provision. In addition, 49100206Sdd * Licensee must cause all Covered Code to which Licensee contributes to 50100206Sdd * contain a file documenting the changes Licensee made to create that Covered 51100206Sdd * Code and the date of any change. Licensee must include in that file the 52100206Sdd * documentation of any changes made by any predecessor Licensee. Licensee 53100206Sdd * must include a prominent statement that the modification is derived, 54100206Sdd * directly or indirectly, from Original Intel Code. 55100206Sdd * 56100206Sdd * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57100206Sdd * Redistribution of source code of any substantial portion of the Covered 58100206Sdd * Code or modification without rights to further distribute source must 59100206Sdd * include the following Disclaimer and Export Compliance provision in the 60100206Sdd * documentation and/or other materials provided with distribution. In 61100206Sdd * addition, Licensee may not authorize further sublicense of source of any 62100206Sdd * portion of the Covered Code, and must include terms to the effect that the 63100206Sdd * license from Licensee to its licensee is limited to the intellectual 64100206Sdd * property embodied in the software Licensee provides to its licensee, and 65100206Sdd * not to intellectual property embodied in modifications its licensee may 66100206Sdd * make. 67100206Sdd * 68100206Sdd * 3.3. Redistribution of Executable. Redistribution in executable form of any 69100206Sdd * substantial portion of the Covered Code or modification must reproduce the 70100206Sdd * above Copyright Notice, and the following Disclaimer and Export Compliance 71100206Sdd * provision in the documentation and/or other materials provided with the 72100206Sdd * distribution. 73100206Sdd * 74100206Sdd * 3.4. Intel retains all right, title, and interest in and to the Original 75100206Sdd * Intel Code. 76100206Sdd * 77100206Sdd * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78100206Sdd * Intel shall be used in advertising or otherwise to promote the sale, use or 79100206Sdd * other dealings in products derived from or relating to the Covered Code 80100206Sdd * without prior written authorization from Intel. 81100206Sdd * 82100206Sdd * 4. Disclaimer and Export Compliance 83100206Sdd * 84100206Sdd * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85100206Sdd * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86100206Sdd * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87100206Sdd * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88100206Sdd * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89100206Sdd * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90100206Sdd * PARTICULAR PURPOSE. 91100206Sdd * 92100206Sdd * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93100804Sdd * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94100206Sdd * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95100206Sdd * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96100206Sdd * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97100206Sdd * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98100206Sdd * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99100206Sdd * LIMITED REMEDY. 100100206Sdd * 101100206Sdd * 4.3. Licensee shall not export, either directly or indirectly, any of this 102100206Sdd * software or system incorporating such software without first obtaining any 103100206Sdd * required license or other approval from the U. S. Department of Commerce or 104100206Sdd * any other agency or department of the United States Government. In the 105100206Sdd * event Licensee exports any such software from the United States or 106100206Sdd * re-exports any such software from a foreign destination, Licensee shall 107100206Sdd * ensure that the distribution and export/re-export of the software is in 108100206Sdd * compliance with all laws, regulations, orders, or other restrictions of the 109100206Sdd * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110100206Sdd * any of its subsidiaries will export/re-export any technical data, process, 111100206Sdd * software, or service, directly or indirectly, to any country for which the 112100206Sdd * United States government or any agency thereof requires an export license, 113100206Sdd * other governmental approval, or letter of assurance, without first obtaining 114100206Sdd * such license, approval or letter. 115100206Sdd * 116100206Sdd *****************************************************************************/ 117100206Sdd 118100206Sdd#include <contrib/dev/acpica/acpi.h> 119100206Sdd 120100206Sdd#define _COMPONENT ACPI_HARDWARE 121100206Sdd ACPI_MODULE_NAME ("hwsleep") 122100206Sdd 123100206Sdd 12465515Sphk#define METHOD_NAME__BFS "\\_BFS" 12565515Sphk#define METHOD_NAME__GTS "\\_GTS" 12665515Sphk#define METHOD_NAME__PTS "\\_PTS" 12765515Sphk#define METHOD_NAME__SST "\\_SI._SST" 12865515Sphk#define METHOD_NAME__WAK "\\_WAK" 12965515Sphk 13065515Sphk#define ACPI_SST_INDICATOR_OFF 0 13165515Sphk#define ACPI_SST_WORKING 1 13264880Sphk#define ACPI_SST_WAKING 2 13365515Sphk#define ACPI_SST_SLEEPING 3 13465515Sphk#define ACPI_SST_SLEEP_CONTEXT 4 13565515Sphk 13665515Sphk 13765515Sphk/****************************************************************************** 13865515Sphk * 13965515Sphk * FUNCTION: AcpiSetFirmwareWakingVector 14065515Sphk * 14165515Sphk * PARAMETERS: PhysicalAddress - Physical address of ACPI real mode 14265515Sphk * entry point. 14365515Sphk * 14495212Sbde * RETURN: Status 14564880Sphk * 14695212Sbde * DESCRIPTION: Access function for dFirmwareWakingVector field in FACS 14764880Sphk * 14864880Sphk ******************************************************************************/ 14964880Sphk 15065051SphkACPI_STATUS 15177050SphkAcpiSetFirmwareWakingVector ( 15265051Sphk ACPI_PHYSICAL_ADDRESS PhysicalAddress) 15365051Sphk{ 15464880Sphk 15564880Sphk ACPI_FUNCTION_TRACE ("AcpiSetFirmwareWakingVector"); 15665051Sphk 15765051Sphk 15865051Sphk /* Set the vector */ 15964880Sphk 16064880Sphk if (AcpiGbl_CommonFACS.VectorWidth == 32) 16164880Sphk { 16264880Sphk *(ACPI_CAST_PTR (UINT32, AcpiGbl_CommonFACS.FirmwareWakingVector)) 16364880Sphk = (UINT32) PhysicalAddress; 16464880Sphk } 16564880Sphk else 16664880Sphk { 16764880Sphk *AcpiGbl_CommonFACS.FirmwareWakingVector 16864880Sphk = PhysicalAddress; 16964880Sphk } 17064880Sphk 17165051Sphk return_ACPI_STATUS (AE_OK); 17265051Sphk} 17364880Sphk 17465515Sphk 17565515Sphk/****************************************************************************** 17664880Sphk * 17765515Sphk * FUNCTION: AcpiGetFirmwareWakingVector 178100206Sdd * 17964880Sphk * PARAMETERS: *PhysicalAddress - Output buffer where contents of 18064880Sphk * the FirmwareWakingVector field of 18165515Sphk * the FACS will be stored. 18265515Sphk * 18365515Sphk * RETURN: Status 18465515Sphk * 18564880Sphk * DESCRIPTION: Access function for FirmwareWakingVector field in FACS 18664880Sphk * 18764880Sphk ******************************************************************************/ 18864880Sphk 18964880SphkACPI_STATUS 19065051SphkAcpiGetFirmwareWakingVector ( 191100206Sdd ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 192100206Sdd{ 193100206Sdd 194100206Sdd ACPI_FUNCTION_TRACE ("AcpiGetFirmwareWakingVector"); 19583366Sjulian 19665515Sphk 19765515Sphk if (!PhysicalAddress) 19865515Sphk { 19965515Sphk return_ACPI_STATUS (AE_BAD_PARAMETER); 20065515Sphk } 20165515Sphk 20265515Sphk /* Get the vector */ 20364880Sphk 20495212Sbde if (AcpiGbl_CommonFACS.VectorWidth == 32) 20595212Sbde { 206 *PhysicalAddress = (ACPI_PHYSICAL_ADDRESS) 207 *(ACPI_CAST_PTR (UINT32, AcpiGbl_CommonFACS.FirmwareWakingVector)); 208 } 209 else 210 { 211 *PhysicalAddress = 212 *AcpiGbl_CommonFACS.FirmwareWakingVector; 213 } 214 215 return_ACPI_STATUS (AE_OK); 216} 217 218 219/****************************************************************************** 220 * 221 * FUNCTION: AcpiEnterSleepStatePrep 222 * 223 * PARAMETERS: SleepState - Which sleep state to enter 224 * 225 * RETURN: Status 226 * 227 * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) 228 * This function must execute with interrupts enabled. 229 * We break sleeping into 2 stages so that OSPM can handle 230 * various OS-specific tasks between the two steps. 231 * 232 ******************************************************************************/ 233 234ACPI_STATUS 235AcpiEnterSleepStatePrep ( 236 UINT8 SleepState) 237{ 238 ACPI_STATUS Status; 239 ACPI_OBJECT_LIST ArgList; 240 ACPI_OBJECT Arg; 241 242 243 ACPI_FUNCTION_TRACE ("AcpiEnterSleepStatePrep"); 244 245 246 /* 247 * _PSW methods could be run here to enable wake-on keyboard, LAN, etc. 248 */ 249 Status = AcpiGetSleepTypeData (SleepState, 250 &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); 251 if (ACPI_FAILURE (Status)) 252 { 253 return_ACPI_STATUS (Status); 254 } 255 256 /* Setup parameter object */ 257 258 ArgList.Count = 1; 259 ArgList.Pointer = &Arg; 260 261 Arg.Type = ACPI_TYPE_INTEGER; 262 Arg.Integer.Value = SleepState; 263 264 /* Run the _PTS and _GTS methods */ 265 266 Status = AcpiEvaluateObject (NULL, METHOD_NAME__PTS, &ArgList, NULL); 267 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 268 { 269 return_ACPI_STATUS (Status); 270 } 271 272 Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL); 273 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 274 { 275 return_ACPI_STATUS (Status); 276 } 277 278 /* Setup the argument to _SST */ 279 280 switch (SleepState) 281 { 282 case ACPI_STATE_S0: 283 Arg.Integer.Value = ACPI_SST_WORKING; 284 break; 285 286 case ACPI_STATE_S1: 287 case ACPI_STATE_S2: 288 case ACPI_STATE_S3: 289 Arg.Integer.Value = ACPI_SST_SLEEPING; 290 break; 291 292 case ACPI_STATE_S4: 293 Arg.Integer.Value = ACPI_SST_SLEEP_CONTEXT; 294 break; 295 296 default: 297 Arg.Integer.Value = ACPI_SST_INDICATOR_OFF; /* Default is indicator off */ 298 break; 299 } 300 301 /* Set the system indicators to show the desired sleep state. */ 302 303 Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); 304 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 305 { 306 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status))); 307 } 308 309 return_ACPI_STATUS (AE_OK); 310} 311 312 313/****************************************************************************** 314 * 315 * FUNCTION: AcpiEnterSleepState 316 * 317 * PARAMETERS: SleepState - Which sleep state to enter 318 * 319 * RETURN: Status 320 * 321 * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) 322 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED 323 * 324 ******************************************************************************/ 325 326ACPI_STATUS 327AcpiEnterSleepState ( 328 UINT8 SleepState) 329{ 330 UINT32 PM1AControl; 331 UINT32 PM1BControl; 332 ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; 333 ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; 334 UINT32 InValue; 335 ACPI_STATUS Status; 336 337 338 ACPI_FUNCTION_TRACE ("AcpiEnterSleepState"); 339 340 341 if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) || 342 (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX)) 343 { 344 ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n", 345 AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB)); 346 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 347 } 348 349 SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A); 350 SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); 351 352 /* Clear wake status */ 353 354 Status = AcpiSetRegister (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); 355 if (ACPI_FAILURE (Status)) 356 { 357 return_ACPI_STATUS (Status); 358 } 359 360 /* Clear all fixed and general purpose status bits */ 361 362 Status = AcpiHwClearAcpiStatus (ACPI_MTX_DO_NOT_LOCK); 363 if (ACPI_FAILURE (Status)) 364 { 365 return_ACPI_STATUS (Status); 366 } 367 368 if (SleepState != ACPI_STATE_S5) 369 { 370 /* Disable BM arbitration */ 371 372 Status = AcpiSetRegister (ACPI_BITREG_ARB_DISABLE, 1, ACPI_MTX_DO_NOT_LOCK); 373 if (ACPI_FAILURE (Status)) 374 { 375 return_ACPI_STATUS (Status); 376 } 377 } 378 379 /* 380 * 1) Disable/Clear all GPEs 381 * 2) Enable all wakeup GPEs 382 */ 383 Status = AcpiHwDisableAllGpes (ACPI_ISR); 384 if (ACPI_FAILURE (Status)) 385 { 386 return_ACPI_STATUS (Status); 387 } 388 AcpiGbl_SystemAwakeAndRunning = FALSE; 389 390 Status = AcpiHwEnableAllWakeupGpes (ACPI_ISR); 391 if (ACPI_FAILURE (Status)) 392 { 393 return_ACPI_STATUS (Status); 394 } 395 396 /* Get current value of PM1A control */ 397 398 Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1AControl); 399 if (ACPI_FAILURE (Status)) 400 { 401 return_ACPI_STATUS (Status); 402 } 403 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", SleepState)); 404 405 /* Clear SLP_EN and SLP_TYP fields */ 406 407 PM1AControl &= ~(SleepTypeRegInfo->AccessBitMask | SleepEnableRegInfo->AccessBitMask); 408 PM1BControl = PM1AControl; 409 410 /* Insert SLP_TYP bits */ 411 412 PM1AControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition); 413 PM1BControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition); 414 415 /* 416 * We split the writes of SLP_TYP and SLP_EN to workaround 417 * poorly implemented hardware. 418 */ 419 420 /* Write #1: fill in SLP_TYP data */ 421 422 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl); 423 if (ACPI_FAILURE (Status)) 424 { 425 return_ACPI_STATUS (Status); 426 } 427 428 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1BControl); 429 if (ACPI_FAILURE (Status)) 430 { 431 return_ACPI_STATUS (Status); 432 } 433 434 /* Insert SLP_ENABLE bit */ 435 436 PM1AControl |= SleepEnableRegInfo->AccessBitMask; 437 PM1BControl |= SleepEnableRegInfo->AccessBitMask; 438 439 /* Write #2: SLP_TYP + SLP_EN */ 440 441 ACPI_FLUSH_CPU_CACHE (); 442 443 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl); 444 if (ACPI_FAILURE (Status)) 445 { 446 return_ACPI_STATUS (Status); 447 } 448 449 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1BControl); 450 if (ACPI_FAILURE (Status)) 451 { 452 return_ACPI_STATUS (Status); 453 } 454 455 if (SleepState > ACPI_STATE_S3) 456 { 457 /* 458 * We wanted to sleep > S3, but it didn't happen (by virtue of the fact that 459 * we are still executing!) 460 * 461 * Wait ten seconds, then try again. This is to get S4/S5 to work on all machines. 462 * 463 * We wait so long to allow chipsets that poll this reg very slowly to 464 * still read the right value. Ideally, this block would go 465 * away entirely. 466 */ 467 AcpiOsStall (10000000); 468 469 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, 470 SleepEnableRegInfo->AccessBitMask); 471 if (ACPI_FAILURE (Status)) 472 { 473 return_ACPI_STATUS (Status); 474 } 475 } 476 477 /* Wait until we enter sleep state */ 478 479 do 480 { 481 Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK); 482 if (ACPI_FAILURE (Status)) 483 { 484 return_ACPI_STATUS (Status); 485 } 486 487 /* Spin until we wake */ 488 489 } while (!InValue); 490 491 return_ACPI_STATUS (AE_OK); 492} 493 494 495/****************************************************************************** 496 * 497 * FUNCTION: AcpiEnterSleepStateS4bios 498 * 499 * PARAMETERS: None 500 * 501 * RETURN: Status 502 * 503 * DESCRIPTION: Perform a S4 bios request. 504 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED 505 * 506 ******************************************************************************/ 507 508ACPI_STATUS 509AcpiEnterSleepStateS4bios ( 510 void) 511{ 512 UINT32 InValue; 513 ACPI_STATUS Status; 514 515 516 ACPI_FUNCTION_TRACE ("AcpiEnterSleepStateS4bios"); 517 518 519 Status = AcpiSetRegister (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); 520 if (ACPI_FAILURE (Status)) 521 { 522 return_ACPI_STATUS (Status); 523 } 524 525 Status = AcpiHwClearAcpiStatus (ACPI_MTX_DO_NOT_LOCK); 526 if (ACPI_FAILURE (Status)) 527 { 528 return_ACPI_STATUS (Status); 529 } 530 531 /* 532 * 1) Disable/Clear all GPEs 533 * 2) Enable all wakeup GPEs 534 */ 535 Status = AcpiHwDisableAllGpes (ACPI_ISR); 536 if (ACPI_FAILURE (Status)) 537 { 538 return_ACPI_STATUS (Status); 539 } 540 AcpiGbl_SystemAwakeAndRunning = FALSE; 541 542 Status = AcpiHwEnableAllWakeupGpes (ACPI_ISR); 543 if (ACPI_FAILURE (Status)) 544 { 545 return_ACPI_STATUS (Status); 546 } 547 548 ACPI_FLUSH_CPU_CACHE (); 549 550 Status = AcpiOsWritePort (AcpiGbl_FADT->SmiCmd, (UINT32) AcpiGbl_FADT->S4BiosReq, 8); 551 552 do { 553 AcpiOsStall(1000); 554 Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK); 555 if (ACPI_FAILURE (Status)) 556 { 557 return_ACPI_STATUS (Status); 558 } 559 } while (!InValue); 560 561 return_ACPI_STATUS (AE_OK); 562} 563 564 565/****************************************************************************** 566 * 567 * FUNCTION: AcpiLeaveSleepState 568 * 569 * PARAMETERS: SleepState - Which sleep state we just exited 570 * 571 * RETURN: Status 572 * 573 * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep 574 * Called with interrupts ENABLED. 575 * 576 ******************************************************************************/ 577 578ACPI_STATUS 579AcpiLeaveSleepState ( 580 UINT8 SleepState) 581{ 582 ACPI_OBJECT_LIST ArgList; 583 ACPI_OBJECT Arg; 584 ACPI_STATUS Status; 585 ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; 586 ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; 587 UINT32 PM1AControl; 588 UINT32 PM1BControl; 589 590 591 ACPI_FUNCTION_TRACE ("AcpiLeaveSleepState"); 592 593 594 /* 595 * Set SLP_TYPE and SLP_EN to state S0. 596 * This is unclear from the ACPI Spec, but it is required 597 * by some machines. 598 */ 599 Status = AcpiGetSleepTypeData (ACPI_STATE_S0, 600 &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); 601 if (ACPI_SUCCESS (Status)) 602 { 603 SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A); 604 SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); 605 606 /* Get current value of PM1A control */ 607 608 Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, 609 ACPI_REGISTER_PM1_CONTROL, &PM1AControl); 610 if (ACPI_SUCCESS (Status)) 611 { 612 /* Clear SLP_EN and SLP_TYP fields */ 613 614 PM1AControl &= ~(SleepTypeRegInfo->AccessBitMask | 615 SleepEnableRegInfo->AccessBitMask); 616 PM1BControl = PM1AControl; 617 618 /* Insert SLP_TYP bits */ 619 620 PM1AControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition); 621 PM1BControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition); 622 623 /* Just ignore any errors */ 624 625 (void) AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, 626 ACPI_REGISTER_PM1A_CONTROL, PM1AControl); 627 (void) AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, 628 ACPI_REGISTER_PM1B_CONTROL, PM1BControl); 629 } 630 } 631 632 /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */ 633 634 AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID; 635 636 /* Setup parameter object */ 637 638 ArgList.Count = 1; 639 ArgList.Pointer = &Arg; 640 Arg.Type = ACPI_TYPE_INTEGER; 641 642 /* Ignore any errors from these methods */ 643 644 Arg.Integer.Value = ACPI_SST_WAKING; 645 Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); 646 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 647 { 648 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status))); 649 } 650 651 Arg.Integer.Value = SleepState; 652 Status = AcpiEvaluateObject (NULL, METHOD_NAME__BFS, &ArgList, NULL); 653 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 654 { 655 ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", AcpiFormatException (Status))); 656 } 657 658 Status = AcpiEvaluateObject (NULL, METHOD_NAME__WAK, &ArgList, NULL); 659 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 660 { 661 ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", AcpiFormatException (Status))); 662 } 663 /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ 664 665 /* 666 * Restore the GPEs: 667 * 1) Disable/Clear all GPEs 668 * 2) Enable all runtime GPEs 669 */ 670 Status = AcpiHwDisableAllGpes (ACPI_NOT_ISR); 671 if (ACPI_FAILURE (Status)) 672 { 673 return_ACPI_STATUS (Status); 674 } 675 AcpiGbl_SystemAwakeAndRunning = TRUE; 676 677 Status = AcpiHwEnableAllRuntimeGpes (ACPI_NOT_ISR); 678 if (ACPI_FAILURE (Status)) 679 { 680 return_ACPI_STATUS (Status); 681 } 682 683 /* Enable power button */ 684 685 (void) AcpiSetRegister(AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].EnableRegisterId, 686 1, ACPI_MTX_DO_NOT_LOCK); 687 (void) AcpiSetRegister(AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].StatusRegisterId, 688 1, ACPI_MTX_DO_NOT_LOCK); 689 690 /* Enable BM arbitration */ 691 692 Status = AcpiSetRegister (ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_LOCK); 693 if (ACPI_FAILURE (Status)) 694 { 695 return_ACPI_STATUS (Status); 696 } 697 698 Arg.Integer.Value = ACPI_SST_WORKING; 699 Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); 700 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 701 { 702 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status))); 703 } 704 705 return_ACPI_STATUS (Status); 706} 707