ACPI_STATUS AcpiRemoveFixedEventHandler ( UINT32 Event, ACPI_EVENT_HANDLER Handler) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiRemoveFixedEventHandler); /* Parameter validation */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Disable the event before removing the handler */ Status = AcpiDisableEvent (Event, 0); /* Always Remove the handler */ AcpiGbl_FixedEventHandlers[Event].Handler = NULL; AcpiGbl_FixedEventHandlers[Event].Context = NULL; if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "Could not disable fixed event - %s (%u)", AcpiUtGetEventName (Event), Event)); } else { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Disabled fixed event - %s (%X)\n", AcpiUtGetEventName (Event), Event)); } (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEnableEvent ( UINT32 Event, UINT32 Flags) { ACPI_STATUS Status = AE_OK; UINT32 Value; ACPI_FUNCTION_TRACE (AcpiEnableEvent); /* If Hardware Reduced flag is set, there are no fixed events */ if (AcpiGbl_ReducedHardware) { return_ACPI_STATUS (AE_OK); } /* Decode the Fixed Event */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Enable the requested fixed event (by writing a one to the enable * register bit) */ Status = AcpiWriteBitRegister ( AcpiGbl_FixedEventInfo[Event].EnableRegisterId, ACPI_ENABLE_EVENT); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Make sure that the hardware responded */ Status = AcpiReadBitRegister ( AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (Value != 1) { ACPI_ERROR ((AE_INFO, "Could not enable %s event", AcpiUtGetEventName (Event))); return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiDisableEvent ( UINT32 Event, UINT32 Flags) { ACPI_STATUS Status = AE_OK; UINT32 Value; ACPI_FUNCTION_TRACE (AcpiDisableEvent); /* Decode the Fixed Event */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Disable the requested fixed event (by writing a zero to the enable * register bit) */ Status = AcpiWriteBitRegister ( AcpiGbl_FixedEventInfo[Event].EnableRegisterId, ACPI_DISABLE_EVENT); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiReadBitRegister ( AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (Value != 0) { ACPI_ERROR ((AE_INFO, "Could not disable %s events", AcpiUtGetEventName (Event))); return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); } return_ACPI_STATUS (Status); }
static UINT32 AcpiEvFixedEventDispatch ( UINT32 Event) { ACPI_FUNCTION_ENTRY (); /* Clear the status bit */ (void) AcpiWriteBitRegister ( AcpiGbl_FixedEventInfo[Event].StatusRegisterId, ACPI_CLEAR_STATUS); /* * Make sure that a handler exists. If not, report an error * and disable the event to prevent further interrupts. */ if (!AcpiGbl_FixedEventHandlers[Event].Handler) { (void) AcpiWriteBitRegister ( AcpiGbl_FixedEventInfo[Event].EnableRegisterId, ACPI_DISABLE_EVENT); ACPI_ERROR ((AE_INFO, "No installed handler for fixed event - %s (%u), disabling", AcpiUtGetEventName (Event), Event)); return (ACPI_INTERRUPT_NOT_HANDLED); } /* Invoke the Fixed Event handler */ return ((AcpiGbl_FixedEventHandlers[Event].Handler)( AcpiGbl_FixedEventHandlers[Event].Context)); }
void AcpiDbDisplayHandlers ( void) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_ADR_SPACE_TYPE SpaceId; UINT32 i; /* Operation region handlers */ AcpiOsPrintf ("\nOperation Region Handlers at the namespace root:\n"); ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode); if (ObjDesc) { for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_SpaceIdList); i++) { SpaceId = AcpiGbl_SpaceIdList[i]; HandlerObj = ObjDesc->Device.Handler; AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetRegionName ((UINT8) SpaceId), SpaceId); while (HandlerObj) { if (AcpiGbl_SpaceIdList[i] == HandlerObj->AddressSpace.SpaceId) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); goto FoundHandler; } HandlerObj = HandlerObj->AddressSpace.Next; } /* There is no handler for this SpaceId */ AcpiOsPrintf ("None\n"); FoundHandler:; } /* Find all handlers for user-defined SpaceIDs */ HandlerObj = ObjDesc->Device.Handler; while (HandlerObj) { if (HandlerObj->AddressSpace.SpaceId >= ACPI_USER_REGION_BEGIN) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, "User-defined ID", HandlerObj->AddressSpace.SpaceId); AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); } HandlerObj = HandlerObj->AddressSpace.Next; } } #if (!ACPI_REDUCED_HARDWARE) /* Fixed event handlers */ AcpiOsPrintf ("\nFixed Event Handlers:\n"); for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetEventName (i), i); if (AcpiGbl_FixedEventHandlers[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_FixedEventHandlers[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } #endif /* !ACPI_REDUCED_HARDWARE */ /* Miscellaneous global handlers */ AcpiOsPrintf ("\nMiscellaneous Global Handlers:\n"); for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_HandlerList); i++) { AcpiOsPrintf (ACPI_HANDLER_NAME_STRING, AcpiGbl_HandlerList[i].Name); if (AcpiGbl_HandlerList[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_HandlerList[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } /* Other handlers that are installed throughout the namespace */ AcpiOsPrintf ("\nOperation Region Handlers for specific devices:\n"); (void) AcpiWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, AcpiDbDisplayNonRootHandlers, NULL, NULL, NULL); }
ACPI_STATUS AcpiInstallFixedEventHandler ( UINT32 Event, ACPI_EVENT_HANDLER Handler, void *Context) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiInstallFixedEventHandler); /* Parameter validation */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Do not allow multiple handlers */ if (AcpiGbl_FixedEventHandlers[Event].Handler) { Status = AE_ALREADY_EXISTS; goto Cleanup; } /* Install the handler before enabling the event */ AcpiGbl_FixedEventHandlers[Event].Handler = Handler; AcpiGbl_FixedEventHandlers[Event].Context = Context; Status = AcpiEnableEvent (Event, 0); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "Could not enable fixed event - %s (%u)", AcpiUtGetEventName (Event), Event)); /* Remove the handler */ AcpiGbl_FixedEventHandlers[Event].Handler = NULL; AcpiGbl_FixedEventHandlers[Event].Context = NULL; } else { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Enabled fixed event %s (%X), Handler=%p\n", AcpiUtGetEventName (Event), Event, Handler)); } Cleanup: (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); }
void AcpiDbDisplayHandlers ( void) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_ADR_SPACE_TYPE SpaceId; UINT32 i; /* Operation region handlers */ AcpiOsPrintf ("\nOperation Region Handlers:\n"); ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode); if (ObjDesc) { for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_SpaceIdList); i++) { SpaceId = AcpiGbl_SpaceIdList[i]; HandlerObj = ObjDesc->Device.Handler; AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetRegionName ((UINT8) SpaceId), SpaceId); while (HandlerObj) { if (i == HandlerObj->AddressSpace.SpaceId) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); goto FoundHandler; } HandlerObj = HandlerObj->AddressSpace.Next; } /* There is no handler for this SpaceId */ AcpiOsPrintf ("None\n"); FoundHandler:; } } /* Fixed event handlers */ AcpiOsPrintf ("\nFixed Event Handlers:\n"); for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetEventName (i), i); if (AcpiGbl_FixedEventHandlers[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_FixedEventHandlers[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } /* Miscellaneous global handlers */ AcpiOsPrintf ("\nMiscellaneous Global Handlers:\n"); for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_HandlerList); i++) { AcpiOsPrintf (ACPI_HANDLER_NAME_STRING, AcpiGbl_HandlerList[i].Name); if (AcpiGbl_HandlerList[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_HandlerList[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } }
ACPI_STATUS AcpiDisableEvent ( UINT32 Event, UINT32 Type, UINT32 Flags) { ACPI_STATUS Status = AE_OK; UINT32 Value; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE ("AcpiDisableEvent"); /* The Type must be either Fixed Event or GPE */ switch (Type) { case ACPI_EVENT_FIXED: /* Decode the Fixed Event */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Disable the requested fixed event (by writing a zero to the * enable register bit) */ Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 0, ACPI_MTX_LOCK); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value, ACPI_MTX_LOCK); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (Value != 0) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not disable %s events\n", AcpiUtGetEventName (Event))); return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); } break; case ACPI_EVENT_GPE: /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (Event); if (!GpeEventInfo) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Only disable the requested GPE number for wake if specified. * Otherwise, turn it totally off */ if (Flags & ACPI_EVENT_WAKE_DISABLE) { AcpiHwDisableGpeForWakeup (GpeEventInfo); } else { Status = AcpiHwDisableGpe (GpeEventInfo); } break; default: Status = AE_BAD_PARAMETER; } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEnableEvent ( UINT32 Event, UINT32 Type, UINT32 Flags) { ACPI_STATUS Status = AE_OK; UINT32 Value; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE ("AcpiEnableEvent"); /* The Type must be either Fixed Event or GPE */ switch (Type) { case ACPI_EVENT_FIXED: /* Decode the Fixed Event */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Enable the requested fixed event (by writing a one to the * enable register bit) */ Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 1, ACPI_MTX_LOCK); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Make sure that the hardware responded */ Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value, ACPI_MTX_LOCK); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (Value != 1) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not enable %s event\n", AcpiUtGetEventName (Event))); return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); } break; case ACPI_EVENT_GPE: /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (Event); if (!GpeEventInfo) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Enable the requested GPE number */ Status = AcpiHwEnableGpe (GpeEventInfo); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (Flags & ACPI_EVENT_WAKE_ENABLE) { AcpiHwEnableGpeForWakeup (GpeEventInfo); } break; default: Status = AE_BAD_PARAMETER; } return_ACPI_STATUS (Status); }