diff options
Diffstat (limited to 'usr/src/uts/intel/io/acpica/hardware/hwsleep.c')
| -rw-r--r-- | usr/src/uts/intel/io/acpica/hardware/hwsleep.c | 395 |
1 files changed, 77 insertions, 318 deletions
diff --git a/usr/src/uts/intel/io/acpica/hardware/hwsleep.c b/usr/src/uts/intel/io/acpica/hardware/hwsleep.c index 1c8ca2440f..1953ff846e 100644 --- a/usr/src/uts/intel/io/acpica/hardware/hwsleep.c +++ b/usr/src/uts/intel/io/acpica/hardware/hwsleep.c @@ -1,12 +1,12 @@ - /****************************************************************************** * - * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface + * Name: hwsleep.c - ACPI Hardware Sleep/Wake Support functions for the + * original/legacy sleep/PM registers. * *****************************************************************************/ /* - * Copyright (C) 2000 - 2011, Intel Corp. + * Copyright (C) 2000 - 2012, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -49,210 +49,38 @@ ACPI_MODULE_NAME ("hwsleep") +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /******************************************************************************* * - * FUNCTION: AcpiSetFirmwareWakingVector - * - * PARAMETERS: PhysicalAddress - 32-bit physical address of ACPI real mode - * entry point. - * - * RETURN: Status - * - * DESCRIPTION: Sets the 32-bit FirmwareWakingVector field of the FACS - * - ******************************************************************************/ - -ACPI_STATUS -AcpiSetFirmwareWakingVector ( - UINT32 PhysicalAddress) -{ - ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector); - - - /* Set the 32-bit vector */ - - AcpiGbl_FACS->FirmwareWakingVector = PhysicalAddress; - - /* Clear the 64-bit vector if it exists */ - - if ((AcpiGbl_FACS->Length > 32) && (AcpiGbl_FACS->Version >= 1)) - { - AcpiGbl_FACS->XFirmwareWakingVector = 0; - } - - return_ACPI_STATUS (AE_OK); -} - -ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector) - - -#if ACPI_MACHINE_WIDTH == 64 -/******************************************************************************* - * - * FUNCTION: AcpiSetFirmwareWakingVector64 - * - * PARAMETERS: PhysicalAddress - 64-bit physical address of ACPI protected - * mode entry point. - * - * RETURN: Status - * - * DESCRIPTION: Sets the 64-bit X_FirmwareWakingVector field of the FACS, if - * it exists in the table. This function is intended for use with - * 64-bit host operating systems. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiSetFirmwareWakingVector64 ( - UINT64 PhysicalAddress) -{ - ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector64); - - - /* Determine if the 64-bit vector actually exists */ - - if ((AcpiGbl_FACS->Length <= 32) || (AcpiGbl_FACS->Version < 1)) - { - return_ACPI_STATUS (AE_NOT_EXIST); - } - - /* Clear 32-bit vector, set the 64-bit X_ vector */ - - AcpiGbl_FACS->FirmwareWakingVector = 0; - AcpiGbl_FACS->XFirmwareWakingVector = PhysicalAddress; - return_ACPI_STATUS (AE_OK); -} - -ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector64) -#endif - -/******************************************************************************* - * - * FUNCTION: AcpiEnterSleepStatePrep + * FUNCTION: AcpiHwLegacySleep * * PARAMETERS: SleepState - Which sleep state to enter + * Flags - ACPI_EXECUTE_GTS to run optional method * * RETURN: Status * - * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) - * This function must execute with interrupts enabled. - * We break sleeping into 2 stages so that OSPM can handle - * various OS-specific tasks between the two steps. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEnterSleepStatePrep ( - UINT8 SleepState) -{ - ACPI_STATUS Status; - ACPI_OBJECT_LIST ArgList; - ACPI_OBJECT Arg; - - - ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep); - - - /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */ - - Status = AcpiGetSleepTypeData (SleepState, - &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Execute the _PTS method (Prepare To Sleep) */ - - ArgList.Count = 1; - ArgList.Pointer = &Arg; - Arg.Type = ACPI_TYPE_INTEGER; - Arg.Integer.Value = SleepState; - - Status = AcpiEvaluateObject (NULL, METHOD_NAME__PTS, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) - { - return_ACPI_STATUS (Status); - } - - /* Setup the argument to the _SST method (System STatus) */ - - switch (SleepState) - { - case ACPI_STATE_S0: - Arg.Integer.Value = ACPI_SST_WORKING; - break; - - case ACPI_STATE_S1: - case ACPI_STATE_S2: - case ACPI_STATE_S3: - Arg.Integer.Value = ACPI_SST_SLEEPING; - break; - - case ACPI_STATE_S4: - Arg.Integer.Value = ACPI_SST_SLEEP_CONTEXT; - break; - - default: - Arg.Integer.Value = ACPI_SST_INDICATOR_OFF; /* Default is off */ - break; - } - - /* - * Set the system indicators to show the desired sleep state. - * _SST is an optional method (return no error if not found) - */ - Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) - { - ACPI_EXCEPTION ((AE_INFO, Status, "While executing method _SST")); - } - - return_ACPI_STATUS (AE_OK); -} - -ACPI_EXPORT_SYMBOL (AcpiEnterSleepStatePrep) - - -/******************************************************************************* - * - * FUNCTION: AcpiEnterSleepState - * - * PARAMETERS: SleepState - Which sleep state to enter - * - * RETURN: Status - * - * DESCRIPTION: Enter a system sleep state + * DESCRIPTION: Enter a system sleep state via the legacy FADT PM registers * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED * ******************************************************************************/ ACPI_STATUS -AcpiEnterSleepState ( - UINT8 SleepState) +AcpiHwLegacySleep ( + UINT8 SleepState, + UINT8 Flags) { - UINT32 Pm1aControl; - UINT32 Pm1bControl; ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; + UINT32 Pm1aControl; + UINT32 Pm1bControl; UINT32 InValue; - ACPI_OBJECT_LIST ArgList; - ACPI_OBJECT Arg; ACPI_STATUS Status; - ACPI_FUNCTION_TRACE (AcpiEnterSleepState); + ACPI_FUNCTION_TRACE (HwLegacySleep); - if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) || - (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX)) - { - ACPI_ERROR ((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X", - AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB)); - return_ACPI_STATUS (AE_AML_OPERAND_VALUE); - } - - SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE); + SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE); SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); /* Clear wake status */ @@ -302,17 +130,11 @@ AcpiEnterSleepState ( return_ACPI_STATUS (Status); } - /* Execute the _GTS method (Going To Sleep) */ - - ArgList.Count = 1; - ArgList.Pointer = &Arg; - Arg.Type = ACPI_TYPE_INTEGER; - Arg.Integer.Value = SleepState; + /* Optionally execute _GTS (Going To Sleep) */ - Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) + if (Flags & ACPI_EXECUTE_GTS) { - return_ACPI_STATUS (Status); + AcpiHwExecuteSleepMethod (METHOD_PATHNAME__GTS, SleepState); } /* Get current value of PM1A control */ @@ -390,7 +212,7 @@ AcpiEnterSleepState ( } } - /* Wait until we enter sleep state */ + /* Wait for transition back to Working State */ do { @@ -400,110 +222,32 @@ AcpiEnterSleepState ( return_ACPI_STATUS (Status); } - /* Spin until we wake */ - } while (!InValue); return_ACPI_STATUS (AE_OK); } -ACPI_EXPORT_SYMBOL (AcpiEnterSleepState) - /******************************************************************************* * - * FUNCTION: AcpiEnterSleepStateS4bios - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Perform a S4 bios request. - * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEnterSleepStateS4bios ( - void) -{ - UINT32 InValue; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios); - - - /* Clear the wake status bit (PM1) */ - - Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - Status = AcpiHwClearAcpiStatus (); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* - * 1) Disable/Clear all GPEs - * 2) Enable all wakeup GPEs - */ - Status = AcpiHwDisableAllGpes (); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - AcpiGbl_SystemAwakeAndRunning = FALSE; - - Status = AcpiHwEnableAllWakeupGpes (); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - ACPI_FLUSH_CPU_CACHE (); - - Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand, - (UINT32) AcpiGbl_FADT.S4BiosRequest, 8); - - do { - AcpiOsStall(1000); - Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - } while (!InValue); - - return_ACPI_STATUS (AE_OK); -} - -ACPI_EXPORT_SYMBOL (AcpiEnterSleepStateS4bios) - - -/******************************************************************************* - * - * FUNCTION: AcpiLeaveSleepState + * FUNCTION: AcpiHwLegacyWakePrep * * PARAMETERS: SleepState - Which sleep state we just exited + * Flags - ACPI_EXECUTE_BFS to run optional method * * RETURN: Status * - * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep + * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a + * sleep. * Called with interrupts ENABLED. * ******************************************************************************/ ACPI_STATUS -AcpiLeaveSleepState ( - UINT8 SleepState) +AcpiHwLegacyWakePrep ( + UINT8 SleepState, + UINT8 Flags) { - ACPI_OBJECT_LIST ArgList; - ACPI_OBJECT Arg; ACPI_STATUS Status; ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; @@ -511,8 +255,7 @@ AcpiLeaveSleepState ( UINT32 Pm1bControl; - ACPI_FUNCTION_TRACE (AcpiLeaveSleepState); - + ACPI_FUNCTION_TRACE (HwLegacyWakePrep); /* * Set SLP_TYPE and SLP_EN to state S0. @@ -553,40 +296,50 @@ AcpiLeaveSleepState ( } } - /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */ + /* Optionally execute _BFS (Back From Sleep) */ - AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID; + if (Flags & ACPI_EXECUTE_BFS) + { + AcpiHwExecuteSleepMethod (METHOD_PATHNAME__BFS, SleepState); + } + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiHwLegacyWake + * + * PARAMETERS: SleepState - Which sleep state we just exited + * Flags - Reserved, set to zero + * + * RETURN: Status + * + * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep + * Called with interrupts ENABLED. + * + ******************************************************************************/ - /* Setup parameter object */ +ACPI_STATUS +AcpiHwLegacyWake ( + UINT8 SleepState, + UINT8 Flags) +{ + ACPI_STATUS Status; - ArgList.Count = 1; - ArgList.Pointer = &Arg; - Arg.Type = ACPI_TYPE_INTEGER; - /* Ignore any errors from these methods */ + ACPI_FUNCTION_TRACE (HwLegacyWake); - Arg.Integer.Value = ACPI_SST_WAKING; - Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) - { - ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST")); - } - Arg.Integer.Value = SleepState; - Status = AcpiEvaluateObject (NULL, METHOD_NAME__BFS, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) - { - ACPI_EXCEPTION ((AE_INFO, Status, "During Method _BFS")); - } + /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */ - Status = AcpiEvaluateObject (NULL, METHOD_NAME__WAK, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) - { - ACPI_EXCEPTION ((AE_INFO, Status, "During Method _WAK")); - } - /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ + AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID; + AcpiHwExecuteSleepMethod (METHOD_PATHNAME__SST, ACPI_SST_WAKING); /* + * GPEs must be enabled before _WAK is called as GPEs + * might get fired there + * * Restore the GPEs: * 1) Disable/Clear all GPEs * 2) Enable all runtime GPEs @@ -596,7 +349,6 @@ AcpiLeaveSleepState ( { return_ACPI_STATUS (Status); } - AcpiGbl_SystemAwakeAndRunning = TRUE; Status = AcpiHwEnableAllRuntimeGpes (); if (ACPI_FAILURE (Status)) @@ -604,6 +356,20 @@ AcpiLeaveSleepState ( return_ACPI_STATUS (Status); } + /* + * Now we can execute _WAK, etc. Some machines require that the GPEs + * are enabled before the wake methods are executed. + */ + AcpiHwExecuteSleepMethod (METHOD_PATHNAME__WAK, SleepState); + + /* + * Some BIOS code assumes that WAK_STS will be cleared on resume + * and use it to determine whether the system is rebooting or + * resuming. Clear WAK_STS for compatibility. + */ + (void) AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); + AcpiGbl_SystemAwakeAndRunning = TRUE; + /* Enable power button */ (void) AcpiWriteBitRegister( @@ -625,15 +391,8 @@ AcpiLeaveSleepState ( return_ACPI_STATUS (Status); } - Arg.Integer.Value = ACPI_SST_WORKING; - Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL); - if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) - { - ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST")); - } - + AcpiHwExecuteSleepMethod (METHOD_PATHNAME__SST, ACPI_SST_WORKING); return_ACPI_STATUS (Status); } -ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState) - +#endif /* !ACPI_REDUCED_HARDWARE */ |