diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/events/evxfevnt.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/events/evxfevnt.c | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/events/evxfevnt.c b/sys/contrib/dev/acpica/components/events/evxfevnt.c new file mode 100644 index 0000000..4e87cde --- /dev/null +++ b/sys/contrib/dev/acpica/components/events/evxfevnt.c @@ -0,0 +1,381 @@ +/****************************************************************************** + * + * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + + +#define __EVXFEVNT_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/actables.h> + +#define _COMPONENT ACPI_EVENTS + ACPI_MODULE_NAME ("evxfevnt") + + +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ +/******************************************************************************* + * + * FUNCTION: AcpiEnable + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Transfers the system into ACPI mode. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiEnable ( + void) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (AcpiEnable); + + + /* ACPI tables must be present */ + + if (!AcpiTbTablesLoaded ()) + { + return_ACPI_STATUS (AE_NO_ACPI_TABLES); + } + + /* Check current mode */ + + if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI) + { + ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n")); + } + else + { + /* Transition to ACPI mode */ + + Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI); + if (ACPI_FAILURE (Status)) + { + ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode")); + return_ACPI_STATUS (Status); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_INIT, + "Transition to ACPI mode successful\n")); + } + + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiEnable) + + +/******************************************************************************* + * + * FUNCTION: AcpiDisable + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDisable ( + void) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (AcpiDisable); + + + if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY) + { + ACPI_DEBUG_PRINT ((ACPI_DB_INIT, + "System is already in legacy (non-ACPI) mode\n")); + } + else + { + /* Transition to LEGACY mode */ + + Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY); + + if (ACPI_FAILURE (Status)) + { + ACPI_ERROR ((AE_INFO, + "Could not exit ACPI mode to legacy mode")); + return_ACPI_STATUS (Status); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n")); + } + + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiDisable) + + +/******************************************************************************* + * + * FUNCTION: AcpiEnableEvent + * + * PARAMETERS: Event - The fixed eventto be enabled + * Flags - Reserved + * + * RETURN: Status + * + * DESCRIPTION: Enable an ACPI event (fixed) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiEnableEvent ( + UINT32 Event, + UINT32 Flags) +{ + ACPI_STATUS Status = AE_OK; + UINT32 Value; + + + ACPI_FUNCTION_TRACE (AcpiEnableEvent); + + + /* 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_EXPORT_SYMBOL (AcpiEnableEvent) + + +/******************************************************************************* + * + * FUNCTION: AcpiDisableEvent + * + * PARAMETERS: Event - The fixed event to be disabled + * Flags - Reserved + * + * RETURN: Status + * + * DESCRIPTION: Disable an ACPI event (fixed) + * + ******************************************************************************/ + +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); +} + +ACPI_EXPORT_SYMBOL (AcpiDisableEvent) + + +/******************************************************************************* + * + * FUNCTION: AcpiClearEvent + * + * PARAMETERS: Event - The fixed event to be cleared + * + * RETURN: Status + * + * DESCRIPTION: Clear an ACPI event (fixed) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiClearEvent ( + UINT32 Event) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (AcpiClearEvent); + + + /* Decode the Fixed Event */ + + if (Event > ACPI_EVENT_MAX) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* + * Clear the requested fixed event (By writing a one to the status + * register bit) + */ + Status = AcpiWriteBitRegister ( + AcpiGbl_FixedEventInfo[Event].StatusRegisterId, + ACPI_CLEAR_STATUS); + + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiClearEvent) + + +/******************************************************************************* + * + * FUNCTION: AcpiGetEventStatus + * + * PARAMETERS: Event - The fixed event + * EventStatus - Where the current status of the event will + * be returned + * + * RETURN: Status + * + * DESCRIPTION: Obtains and returns the current status of the event + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetEventStatus ( + UINT32 Event, + ACPI_EVENT_STATUS *EventStatus) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (AcpiGetEventStatus); + + + if (!EventStatus) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* Decode the Fixed Event */ + + if (Event > ACPI_EVENT_MAX) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* Get the status of the requested fixed event */ + + Status = AcpiReadBitRegister ( + AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus); + + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiGetEventStatus) + +#endif /* !ACPI_REDUCED_HARDWARE */ |
