| 0,0 → 1,711 |
|---|
| |
| /****************************************************************************** |
| * |
| * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwsleep") |
| |
| |
| /******************************************************************************* |
| * |
| * 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 |
| * |
| * PARAMETERS: SleepState - Which sleep state to enter |
| * |
| * 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 |
| * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEnterSleepState ( |
| UINT8 SleepState) |
| { |
| UINT32 Pm1aControl; |
| UINT32 Pm1bControl; |
| ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; |
| ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; |
| UINT32 InValue; |
| ACPI_OBJECT_LIST ArgList; |
| ACPI_OBJECT Arg; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiEnterSleepState); |
| |
| |
| 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); |
| SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); |
| |
| /* Clear wake status */ |
| |
| Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Clear all fixed and general purpose status bits */ |
| |
| Status = AcpiHwClearAcpiStatus (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (SleepState != ACPI_STATE_S5) |
| { |
| /* |
| * Disable BM arbitration. This feature is contained within an |
| * optional register (PM2 Control), so ignore a BAD_ADDRESS |
| * exception. |
| */ |
| Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 1); |
| if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS)) |
| { |
| 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); |
| } |
| |
| /* Execute the _GTS method (Going To Sleep) */ |
| |
| ArgList.Count = 1; |
| ArgList.Pointer = &Arg; |
| Arg.Type = ACPI_TYPE_INTEGER; |
| Arg.Integer.Value = SleepState; |
| |
| Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL); |
| if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Get current value of PM1A control */ |
| |
| Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL, |
| &Pm1aControl); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
| "Entering sleep state [S%u]\n", SleepState)); |
| |
| /* Clear the SLP_EN and SLP_TYP fields */ |
| |
| Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask | |
| SleepEnableRegInfo->AccessBitMask); |
| Pm1bControl = Pm1aControl; |
| |
| /* Insert the SLP_TYP bits */ |
| |
| Pm1aControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition); |
| Pm1bControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition); |
| |
| /* |
| * We split the writes of SLP_TYP and SLP_EN to workaround |
| * poorly implemented hardware. |
| */ |
| |
| /* Write #1: write the SLP_TYP data to the PM1 Control registers */ |
| |
| Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Insert the sleep enable (SLP_EN) bit */ |
| |
| Pm1aControl |= SleepEnableRegInfo->AccessBitMask; |
| Pm1bControl |= SleepEnableRegInfo->AccessBitMask; |
| |
| /* Flush caches, as per ACPI specification */ |
| |
| ACPI_FLUSH_CPU_CACHE (); |
| |
| /* Write #2: Write both SLP_TYP + SLP_EN */ |
| |
| Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (SleepState > ACPI_STATE_S3) |
| { |
| /* |
| * We wanted to sleep > S3, but it didn't happen (by virtue of the |
| * fact that we are still executing!) |
| * |
| * Wait ten seconds, then try again. This is to get S4/S5 to work on |
| * all machines. |
| * |
| * We wait so long to allow chipsets that poll this reg very slowly |
| * to still read the right value. Ideally, this block would go |
| * away entirely. |
| */ |
| AcpiOsStall (10000000); |
| |
| Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_CONTROL, |
| SleepEnableRegInfo->AccessBitMask); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| /* Wait until we enter sleep state */ |
| |
| do |
| { |
| Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue); |
| if (ACPI_FAILURE (Status)) |
| { |
| 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 |
| * |
| * PARAMETERS: SleepState - Which sleep state we just exited |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep |
| * Called with interrupts ENABLED. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiLeaveSleepState ( |
| UINT8 SleepState) |
| { |
| ACPI_OBJECT_LIST ArgList; |
| ACPI_OBJECT Arg; |
| ACPI_STATUS Status; |
| ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; |
| ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; |
| UINT32 Pm1aControl; |
| UINT32 Pm1bControl; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiLeaveSleepState); |
| |
| |
| /* |
| * Set SLP_TYPE and SLP_EN to state S0. |
| * This is unclear from the ACPI Spec, but it is required |
| * by some machines. |
| */ |
| Status = AcpiGetSleepTypeData (ACPI_STATE_S0, |
| &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); |
| if (ACPI_SUCCESS (Status)) |
| { |
| SleepTypeRegInfo = |
| AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE); |
| SleepEnableRegInfo = |
| AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); |
| |
| /* Get current value of PM1A control */ |
| |
| Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL, |
| &Pm1aControl); |
| if (ACPI_SUCCESS (Status)) |
| { |
| /* Clear the SLP_EN and SLP_TYP fields */ |
| |
| Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask | |
| SleepEnableRegInfo->AccessBitMask); |
| Pm1bControl = Pm1aControl; |
| |
| /* Insert the SLP_TYP bits */ |
| |
| Pm1aControl |= (AcpiGbl_SleepTypeA << |
| SleepTypeRegInfo->BitPosition); |
| Pm1bControl |= (AcpiGbl_SleepTypeB << |
| SleepTypeRegInfo->BitPosition); |
| |
| /* Write the control registers and ignore any errors */ |
| |
| (void) AcpiHwWritePm1Control (Pm1aControl, Pm1bControl); |
| } |
| } |
| |
| /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */ |
| |
| AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID; |
| |
| /* Setup parameter object */ |
| |
| ArgList.Count = 1; |
| ArgList.Pointer = &Arg; |
| Arg.Type = ACPI_TYPE_INTEGER; |
| |
| /* Ignore any errors from these methods */ |
| |
| 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")); |
| } |
| |
| 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? */ |
| |
| /* |
| * Restore the GPEs: |
| * 1) Disable/Clear all GPEs |
| * 2) Enable all runtime GPEs |
| */ |
| Status = AcpiHwDisableAllGpes (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| AcpiGbl_SystemAwakeAndRunning = TRUE; |
| |
| Status = AcpiHwEnableAllRuntimeGpes (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Enable power button */ |
| |
| (void) AcpiWriteBitRegister( |
| AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].EnableRegisterId, |
| ACPI_ENABLE_EVENT); |
| |
| (void) AcpiWriteBitRegister( |
| AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].StatusRegisterId, |
| ACPI_CLEAR_STATUS); |
| |
| /* |
| * Enable BM arbitration. This feature is contained within an |
| * optional register (PM2 Control), so ignore a BAD_ADDRESS |
| * exception. |
| */ |
| Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 0); |
| if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS)) |
| { |
| 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")); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState) |
| |