| /****************************************************************************** |
| * |
| * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2015, 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 EXPORT_ACPI_INTERFACES |
| |
| #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); |
| } |
| |
| /* If the Hardware Reduced flag is set, machine is always in acpi mode */ |
| |
| if (AcpiGbl_ReducedHardware) |
| { |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| /* 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 the Hardware Reduced flag is set, machine is always in acpi mode */ |
| |
| if (AcpiGbl_ReducedHardware) |
| { |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| 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; |
| ACPI_EVENT_STATUS LocalEventStatus = 0; |
| UINT32 InByte; |
| |
| |
| 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); |
| } |
| |
| /* Fixed event currently can be dispatched? */ |
| |
| if (AcpiGbl_FixedEventHandlers[Event].Handler) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_HAS_HANDLER; |
| } |
| |
| /* Fixed event currently enabled? */ |
| |
| Status = AcpiReadBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &InByte); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (InByte) |
| { |
| LocalEventStatus |= |
| (ACPI_EVENT_FLAG_ENABLED | ACPI_EVENT_FLAG_ENABLE_SET); |
| } |
| |
| /* Fixed event currently active? */ |
| |
| Status = AcpiReadBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].StatusRegisterId, &InByte); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (InByte) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_STATUS_SET; |
| } |
| |
| (*EventStatus) = LocalEventStatus; |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetEventStatus) |
| |
| #endif /* !ACPI_REDUCED_HARDWARE */ |