diff options
Diffstat (limited to 'sys/contrib/dev/acpica/hwgpe.c')
| -rw-r--r-- | sys/contrib/dev/acpica/hwgpe.c | 162 |
1 files changed, 161 insertions, 1 deletions
diff --git a/sys/contrib/dev/acpica/hwgpe.c b/sys/contrib/dev/acpica/hwgpe.c index 761cd93..27e343a 100644 --- a/sys/contrib/dev/acpica/hwgpe.c +++ b/sys/contrib/dev/acpica/hwgpe.c @@ -2,7 +2,7 @@ /****************************************************************************** * * Module Name: hwgpe - Low level GPE enable/disable/clear functions - * $Revision: 32 $ + * $Revision: 34 $ * *****************************************************************************/ @@ -168,6 +168,45 @@ AcpiHwEnableGpe ( (InByte | BitMask), 8); } +/****************************************************************************** + * + * FUNCTION: AcpiHwEnableGpeForWakeup + * + * PARAMETERS: GpeNumber - The GPE + * + * RETURN: None + * + * DESCRIPTION: Keep track of which GPEs the OS has requested not be + * disabled when going to sleep. + * + ******************************************************************************/ + +void +AcpiHwEnableGpeForWakeup ( + UINT32 GpeNumber) +{ + UINT32 RegisterIndex; + UINT32 BitMask; + + + FUNCTION_ENTRY (); + + + /* + * Translate GPE number to index into global registers array. + */ + RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; + + /* + * Figure out the bit offset for this GPE within the target register. + */ + BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)]; + + /* + * Set the bit so we will not disable this when sleeping + */ + AcpiGbl_GpeRegisters[RegisterIndex].WakeEnable |= BitMask; +} /****************************************************************************** * @@ -211,8 +250,49 @@ AcpiHwDisableGpe ( AcpiOsReadPort (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, &InByte, 8); AcpiOsWritePort (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, (InByte & ~BitMask), 8); + + AcpiHwDisableGpeForWakeup(GpeNumber); } +/****************************************************************************** + * + * FUNCTION: AcpiHwDisableGpeForWakeup + * + * PARAMETERS: GpeNumber - The GPE + * + * RETURN: None + * + * DESCRIPTION: Keep track of which GPEs the OS has requested not be + * disabled when going to sleep. + * + ******************************************************************************/ + +void +AcpiHwDisableGpeForWakeup ( + UINT32 GpeNumber) +{ + UINT32 RegisterIndex; + UINT32 BitMask; + + + FUNCTION_ENTRY (); + + + /* + * Translate GPE number to index into global registers array. + */ + RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; + + /* + * Figure out the bit offset for this GPE within the target register. + */ + BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)]; + + /* + * Clear the bit so we will disable this when sleeping + */ + AcpiGbl_GpeRegisters[RegisterIndex].WakeEnable &= ~BitMask; +} /****************************************************************************** * @@ -308,6 +388,14 @@ AcpiHwGetGpeStatus ( } /* + * Enabled for wake?: + */ + if (BitMask & AcpiGbl_GpeRegisters[RegisterIndex].WakeEnable) + { + (*EventStatus) |= ACPI_EVENT_FLAG_WAKE_ENABLED; + } + + /* * Set? */ InByte = 0; @@ -317,3 +405,75 @@ AcpiHwGetGpeStatus ( (*EventStatus) |= ACPI_EVENT_FLAG_SET; } } + +/****************************************************************************** + * + * FUNCTION: AcpiHwDisableNonWakeupGpes + * + * PARAMETERS: None + * + * RETURN: None + * + * DESCRIPTION: Disable all non-wakeup GPEs + * Call with interrupts disabled. The interrupt handler also + * modifies AcpiGbl_GpeRegisters[i].Enable, so it should not be + * given the chance to run until after non-wake GPEs are + * re-enabled. + * + ******************************************************************************/ + +void +AcpiHwDisableNonWakeupGpes ( + void) +{ + UINT32 i; + + FUNCTION_ENTRY (); + + for (i = 0; i < AcpiGbl_GpeRegisterCount; i++) + { + /* + * Read the enabled status of all GPEs. We + * will be using it to restore all the GPEs later. + */ + AcpiOsReadPort (AcpiGbl_GpeRegisters[i].EnableAddr, + &AcpiGbl_GpeRegisters[i].Enable, 8); + + /* + * Disable all GPEs but wakeup GPEs. + */ + AcpiOsWritePort(AcpiGbl_GpeRegisters[i].EnableAddr, + AcpiGbl_GpeRegisters[i].WakeEnable, 8); + } +} + +/****************************************************************************** + * + * FUNCTION: AcpiHwEnableNonWakeupGpes + * + * PARAMETERS: None + * + * RETURN: None + * + * DESCRIPTION: Enable all non-wakeup GPEs we previously enabled. + * + ******************************************************************************/ + +void +AcpiHwEnableNonWakeupGpes ( + void) +{ + UINT32 i; + + FUNCTION_ENTRY (); + + for (i = 0; i < AcpiGbl_GpeRegisterCount; i++) + { + /* + * We previously stored the enabled status of all GPEs. + * Blast them back in. + */ + AcpiOsWritePort(AcpiGbl_GpeRegisters[i].EnableAddr, + AcpiGbl_GpeRegisters[i].Enable, 8); + } +} |
