ACPI_STATUS
AcpiHwExtendedWakePrep (
UINT8 SleepState,
UINT8 Flags)
{
ACPI_STATUS Status;
UINT8 SleepTypeValue;
ACPI_FUNCTION_TRACE (HwExtendedWakePrep);
Status = AcpiGetSleepTypeData (ACPI_STATE_S0,
&AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
if (ACPI_SUCCESS (Status))
{
SleepTypeValue = ((AcpiGbl_SleepTypeA << ACPI_X_SLEEP_TYPE_POSITION) &
ACPI_X_SLEEP_TYPE_MASK);
(void) AcpiWrite ((SleepTypeValue | ACPI_X_SLEEP_ENABLE),
&AcpiGbl_FADT.SleepControl);
}
/* Optionally execute _BFS (Back From Sleep) */
if (Flags & ACPI_EXECUTE_BFS)
{
AcpiHwExecuteSleepMethod (METHOD_PATHNAME__BFS, SleepState);
}
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiHwLegacyWakePrep (
UINT8 SleepState)
{
ACPI_STATUS Status;
ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo;
ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo;
UINT32 Pm1aControl;
UINT32 Pm1bControl;
ACPI_FUNCTION_TRACE (HwLegacyWakePrep);
/*
* 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);
}
}
AcpiHwExecuteSleepMethod (METHOD_NAME__BFS, SleepState);
return_ACPI_STATUS (Status);
}
static void
AeTestSleepData (
void)
{
int State;
UINT8 TypeA;
UINT8 TypeB;
ACPI_STATUS Status;
/* Attempt to get sleep data for all known sleep states */
for (State = ACPI_STATE_S0; State <= ACPI_S_STATES_MAX; State++)
{
Status = AcpiGetSleepTypeData ((UINT8) State, &TypeA, &TypeB);
/* All sleep methods are optional */
if (Status != AE_NOT_FOUND)
{
ACPI_CHECK_OK (AcpiGetSleepTypeData, Status);
}
}
}
ACPI_STATUS
AcpiHwExtendedWakePrep (
UINT8 SleepState)
{
ACPI_STATUS Status;
UINT8 SleepTypeValue;
ACPI_FUNCTION_TRACE (HwExtendedWakePrep);
Status = AcpiGetSleepTypeData (ACPI_STATE_S0,
&AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
if (ACPI_SUCCESS (Status))
{
SleepTypeValue = ((AcpiGbl_SleepTypeA << ACPI_X_SLEEP_TYPE_POSITION) &
ACPI_X_SLEEP_TYPE_MASK);
(void) AcpiWrite ((UINT64) (SleepTypeValue | ACPI_X_SLEEP_ENABLE),
&AcpiGbl_FADT.SleepControl);
}
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiEnterSleepStatePrep (
UINT8 SleepState)
{
ACPI_STATUS Status;
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT Arg;
UINT32 SstValue;
ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep);
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_PATHNAME__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:
SstValue = ACPI_SST_WORKING;
break;
case ACPI_STATE_S1:
case ACPI_STATE_S2:
case ACPI_STATE_S3:
SstValue = ACPI_SST_SLEEPING;
break;
case ACPI_STATE_S4:
SstValue = ACPI_SST_SLEEP_CONTEXT;
break;
default:
SstValue = 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)
*/
AcpiHwExecuteSleepMethod (__UNCONST(METHOD_PATHNAME__SST), SstValue);
return_ACPI_STATUS (AE_OK);
}
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_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);
}
static void
AcpiDbDoOneSleepState (
UINT8 SleepState)
{
ACPI_STATUS Status;
UINT8 SleepTypeA;
UINT8 SleepTypeB;
/* Validate parameter */
if (SleepState > ACPI_S_STATES_MAX)
{
AcpiOsPrintf ("Sleep state %d out of range (%d max)\n",
SleepState, ACPI_S_STATES_MAX);
return;
}
AcpiOsPrintf ("\n---- Invoking sleep state S%d (%s):\n",
SleepState, AcpiGbl_SleepStateNames[SleepState]);
/* Get the values for the sleep type registers (for display only) */
Status = AcpiGetSleepTypeData (SleepState, &SleepTypeA, &SleepTypeB);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf ("Could not evaluate [%s] method, %s\n",
AcpiGbl_SleepStateNames[SleepState],
AcpiFormatException (Status));
return;
}
AcpiOsPrintf (
"Register values for sleep state S%d: Sleep-A: %.2X, Sleep-B: %.2X\n",
SleepState, SleepTypeA, SleepTypeB);
/* Invoke the various sleep/wake interfaces */
AcpiOsPrintf ("**** Sleep: Prepare to sleep (S%d) ****\n",
SleepState);
Status = AcpiEnterSleepStatePrep (SleepState);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
AcpiOsPrintf ("**** Sleep: Going to sleep (S%d) ****\n",
SleepState);
Status = AcpiEnterSleepState (SleepState);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
AcpiOsPrintf ("**** Wake: Prepare to return from sleep (S%d) ****\n",
SleepState);
Status = AcpiLeaveSleepStatePrep (SleepState);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
AcpiOsPrintf ("**** Wake: Return from sleep (S%d) ****\n",
SleepState);
Status = AcpiLeaveSleepState (SleepState);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
return;
ErrorExit:
ACPI_EXCEPTION ((AE_INFO, Status, "During invocation of sleep state S%d",
SleepState));
}