evxfevnt.c revision 128212
143902Sbrian/****************************************************************************** 243902Sbrian * 343948Sbrian * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable 443902Sbrian * $Revision: 75 $ 543948Sbrian * 643902Sbrian *****************************************************************************/ 750476Speter 843902Sbrian/****************************************************************************** 943902Sbrian * 1043902Sbrian * 1. Copyright Notice 1143902Sbrian * 1243902Sbrian * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp. 1343902Sbrian * All rights reserved. 1443902Sbrian * 1543902Sbrian * 2. License 1643902Sbrian * 1743902Sbrian * 2.1. This is your license from Intel Corp. under its intellectual property 1843902Sbrian * rights. You may have additional license terms from the party that provided 1943902Sbrian * you this software, covering your right to use that party's intellectual 2043902Sbrian * property rights. 2143948Sbrian * 2243902Sbrian * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2343902Sbrian * copy of the source code appearing in this file ("Covered Code") an 2443948Sbrian * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2543948Sbrian * base code distributed originally by Intel ("Original Intel Code") to copy, 2643902Sbrian * make derivatives, distribute, use and display any portion of the Covered 2743902Sbrian * Code in any form, with the right to sublicense such rights; and 2843902Sbrian * 2943902Sbrian * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3043902Sbrian * license (with the right to sublicense), under only those claims of Intel 3143948Sbrian * patents that are infringed by the Original Intel Code, to make, use, sell, 3243948Sbrian * offer to sell, and import the Covered Code and derivative works thereof 3343902Sbrian * solely to the minimum extent necessary to exercise the above copyright 3443902Sbrian * license, and in no event shall the patent license extend to any additions 3543902Sbrian * to or modifications of the Original Intel Code. No other license or right 3643902Sbrian * is granted directly or by implication, estoppel or otherwise; 3743948Sbrian * 3843948Sbrian * The above copyright and patent license is granted only if the following 3947634Sbillf * conditions are met: 4043902Sbrian * 4143902Sbrian * 3. Conditions 4243902Sbrian * 4343948Sbrian * 3.1. Redistribution of Source with Rights to Further Distribute Source. 4443948Sbrian * Redistribution of source code of any substantial prton of the Covered 4543948Sbrian * Code or modification with rights to further distribute source must include 4643902Sbrian * the above Copyright Notice, the above License, this list of Conditions, 4743902Sbrian * and the following Disclaimer and Export Compliance provision. In addition, 4843948Sbrian * Licensee must cause all Covered Code to which Licensee contributes to 4943948Sbrian * contain a file documenting the changes Licensee made to create that Covered 5043902Sbrian * Code and the date of any change. Licensee must include in that file the 5143902Sbrian * documentation of any changes made by any predecessor Licensee. Licensee 5243902Sbrian * must include a prominent statement that the modification is derived, 5343948Sbrian * directly or indirectly, from Original Intel Code. 5443902Sbrian * 5543902Sbrian * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 5643948Sbrian * Redistribution of source code of any substantial portion of the Covered 5743948Sbrian * Code or modification without rights to further distribute source must 5843902Sbrian * include the following Disclaimer and Export Compliance provision in the 5943902Sbrian * documentation and/or other materials provided with distribution. In 6043902Sbrian * addition, Licensee may not authorize further sublicense of source of any 6143902Sbrian * portion of the Covered Code, and must include terms to the effect that the 6243902Sbrian * license from Licensee to its licensee is limited to the intellectual 6343902Sbrian * property embodied in the software Licensee provides to its licensee, and 6443948Sbrian * not to intellectual property embodied in modifications its licensee may 6543902Sbrian * make. 6643948Sbrian * 6743948Sbrian * 3.3. Redistribution of Executable. Redistribution in executable form of any 6843902Sbrian * substantial portion of the Covered Code or modification must reproduce the 6943948Sbrian * above Copyright Notice, and the following Disclaimer and Export Compliance 7043948Sbrian * provision in the documentation and/or other materials provided with the 7143948Sbrian * distribution. 7243948Sbrian * 7343948Sbrian * 3.4. Intel retains all right, title, and interest in and to the Original 7443948Sbrian * Intel Code. 7543902Sbrian * 7643902Sbrian * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7743902Sbrian * Intel shall be used in advertising or otherwise to promote the sale, use or 7843902Sbrian * other dealings in products derived from or relating to the Covered Code 7943902Sbrian * without prior written authorization from Intel. 8043902Sbrian * 8143902Sbrian * 4. Disclaimer and Export Compliance 8243902Sbrian * 8343948Sbrian * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8447634Sbillf * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8543902Sbrian * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8643902Sbrian * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8743948Sbrian * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 8843948Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 8943902Sbrian * PARTICULAR PURPOSE. 9043902Sbrian * 9143902Sbrian * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9243902Sbrian * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9343902Sbrian * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9443902Sbrian * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9543902Sbrian * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9643902Sbrian * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9743902Sbrian * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 9843902Sbrian * LIMITED REMEDY. 9943902Sbrian * 10043902Sbrian * 4.3. Licensee shall not export, either directly or indirectly, any of this 10143902Sbrian * software or system incorporating such software without first obtaining any 10243902Sbrian * required license or other approval from the U. S. Department of Commerce or 10343902Sbrian * any other agency or department of the United States Government. In the 10443902Sbrian * event Licensee exports any such software from the United States or 10543902Sbrian * re-exports any such software from a foreign destination, Licensee shall 10643902Sbrian * ensure that the distribution and export/re-export of the software is in 10743902Sbrian * compliance with all laws, regulations, orders, or other restrictions of the 10843902Sbrian * U.S. Export Administration Regulations. Licensee agrees that neither it nor 10943902Sbrian * any of its subsidiaries will export/re-export any technical data, process, 11043902Sbrian * software, or service, directly or indirectly, to any country for which the 11143902Sbrian * United States government or any agency thereof requires an export license, 11243902Sbrian * other governmental approval, or letter of assurance, without first obtaining 11343902Sbrian * such license, approval or letter. 11443902Sbrian * 11543902Sbrian *****************************************************************************/ 11643902Sbrian 11743902Sbrian 11843902Sbrian#define __EVXFEVNT_C__ 11943902Sbrian 12043902Sbrian#include "acpi.h" 12143902Sbrian#include "acevents.h" 12243902Sbrian#include "acnamesp.h" 12343902Sbrian 12443902Sbrian#define _COMPONENT ACPI_EVENTS 12543902Sbrian ACPI_MODULE_NAME ("evxfevnt") 12643902Sbrian 12743902Sbrian 12843902Sbrian/******************************************************************************* 12943902Sbrian * 13043902Sbrian * FUNCTION: AcpiEnable 13143902Sbrian * 13243902Sbrian * PARAMETERS: None 13343902Sbrian * 13443902Sbrian * RETURN: Status 13543902Sbrian * 13643902Sbrian * DESCRIPTION: Transfers the system into ACPI mode. 13743902Sbrian * 13843902Sbrian ******************************************************************************/ 13943902Sbrian 14043902SbrianACPI_STATUS 14143902SbrianAcpiEnable (void) 14243902Sbrian{ 14343902Sbrian ACPI_STATUS Status = AE_OK; 14455247Sbrian 14543902Sbrian 14643902Sbrian ACPI_FUNCTION_TRACE ("AcpiEnable"); 14743902Sbrian 14843902Sbrian 14943902Sbrian /* Make sure we have the FADT*/ 15043902Sbrian 15143902Sbrian if (!AcpiGbl_FADT) 15243902Sbrian { 15343902Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n")); 15443902Sbrian return_ACPI_STATUS (AE_NO_ACPI_TABLES); 15543902Sbrian } 15643902Sbrian 15743902Sbrian if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI) 15843902Sbrian { 15943902Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n")); 16043902Sbrian } 16143902Sbrian else 16243902Sbrian { 16343902Sbrian /* Transition to ACPI mode */ 16443902Sbrian 16543902Sbrian Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI); 16643902Sbrian if (ACPI_FAILURE (Status)) 16743902Sbrian { 16843902Sbrian ACPI_REPORT_ERROR (("Could not transition to ACPI mode.\n")); 16943902Sbrian return_ACPI_STATUS (Status); 17043902Sbrian } 17143902Sbrian 17243902Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Transition to ACPI mode successful\n")); 17343902Sbrian } 17443902Sbrian 17543902Sbrian return_ACPI_STATUS (Status); 17643902Sbrian} 17743902Sbrian 17858636Sbrian 17943902Sbrian/******************************************************************************* 18043902Sbrian * 18143902Sbrian * FUNCTION: AcpiDisable 18243902Sbrian * 18351050Sbrian * PARAMETERS: None 18451050Sbrian * 18551050Sbrian * RETURN: Status 18651050Sbrian * 18751049Sbrian * DESCRIPTION: Transfers the system into LEGACY mode. 18843902Sbrian * 18943902Sbrian ******************************************************************************/ 19055427Sbrian 19155427SbrianACPI_STATUS 19243902SbrianAcpiDisable (void) 19343902Sbrian{ 19443902Sbrian ACPI_STATUS Status = AE_OK; 19551049Sbrian 19643902Sbrian 19743902Sbrian ACPI_FUNCTION_TRACE ("AcpiDisable"); 19843902Sbrian 19943902Sbrian 20043902Sbrian if (!AcpiGbl_FADT) 20143902Sbrian { 20243902Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n")); 20343902Sbrian return_ACPI_STATUS (AE_NO_ACPI_TABLES); 20443902Sbrian } 20543902Sbrian 20643902Sbrian if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY) 20743902Sbrian { 20843902Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in legacy (non-ACPI) mode\n")); 20943902Sbrian } 21043902Sbrian else 21143902Sbrian { 21243902Sbrian /* Transition to LEGACY mode */ 21343902Sbrian 21443902Sbrian Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY); 21556704Sbrian 21643902Sbrian if (ACPI_FAILURE (Status)) 21756704Sbrian { 21856704Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not exit ACPI mode to legacy mode")); 21956704Sbrian return_ACPI_STATUS (Status); 22056704Sbrian } 22159152Sbrian 22259152Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n")); 22359152Sbrian } 22459152Sbrian 22559152Sbrian return_ACPI_STATUS (Status); 22659152Sbrian} 22759152Sbrian 22859152Sbrian 22943902Sbrian/******************************************************************************* 23056704Sbrian * 23143902Sbrian * FUNCTION: AcpiEnableEvent 23256704Sbrian * 23356704Sbrian * PARAMETERS: Event - The fixed eventto be enabled 23456704Sbrian * Flags - Reserved 23556704Sbrian * 23656704Sbrian * RETURN: Status 23756704Sbrian * 23856704Sbrian * DESCRIPTION: Enable an ACPI event (fixed) 23956704Sbrian * 24056704Sbrian ******************************************************************************/ 24156704Sbrian 24243902SbrianACPI_STATUS 24356704SbrianAcpiEnableEvent ( 24443902Sbrian UINT32 Event, 24556704Sbrian UINT32 Flags) 24656704Sbrian{ 24756704Sbrian ACPI_STATUS Status = AE_OK; 24856704Sbrian UINT32 Value; 24956704Sbrian 25056704Sbrian 25156704Sbrian ACPI_FUNCTION_TRACE ("AcpiEnableEvent"); 25256704Sbrian 25356704Sbrian 25456704Sbrian /* Decode the Fixed Event */ 25556704Sbrian 25656704Sbrian if (Event > ACPI_EVENT_MAX) 25756704Sbrian { 25856704Sbrian return_ACPI_STATUS (AE_BAD_PARAMETER); 25956704Sbrian } 26056704Sbrian 26143902Sbrian /* 26249141Sbrian * Enable the requested fixed event (by writing a one to the 26349141Sbrian * enable register bit) 26449141Sbrian */ 26549141Sbrian Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 26649141Sbrian 1, ACPI_MTX_LOCK); 26749141Sbrian if (ACPI_FAILURE (Status)) 26849141Sbrian { 26949141Sbrian return_ACPI_STATUS (Status); 27049141Sbrian } 27149141Sbrian 27249141Sbrian /* Make sure that the hardware responded */ 27349141Sbrian 27449141Sbrian Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 27549141Sbrian &Value, ACPI_MTX_LOCK); 27649141Sbrian if (ACPI_FAILURE (Status)) 27749141Sbrian { 27849141Sbrian return_ACPI_STATUS (Status); 27949141Sbrian } 28049141Sbrian 28149141Sbrian if (Value != 1) 28249141Sbrian { 28349141Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 28449141Sbrian "Could not enable %s event\n", AcpiUtGetEventName (Event))); 28549141Sbrian return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); 28649141Sbrian } 28749141Sbrian 28849141Sbrian return_ACPI_STATUS (Status); 28949141Sbrian} 29049141Sbrian 29143902Sbrian 29249141Sbrian/******************************************************************************* 29349141Sbrian * 29449141Sbrian * FUNCTION: AcpiEnableGpe 29549141Sbrian * 29649141Sbrian * PARAMETERS: GpeDevice - Parent GPE Device 29749141Sbrian * GpeNumber - GPE level within the GPE block 29849141Sbrian * Flags - Just enable, or also wake enable? 29949141Sbrian * Called from ISR or not 30049141Sbrian * 30149141Sbrian * RETURN: Status 30249141Sbrian * 30349141Sbrian * DESCRIPTION: Enable an ACPI event (general purpose) 30449141Sbrian * 30549141Sbrian ******************************************************************************/ 30649141Sbrian 30749141SbrianACPI_STATUS 30849141SbrianAcpiEnableGpe ( 30949141Sbrian ACPI_HANDLE GpeDevice, 31049141Sbrian UINT32 GpeNumber, 31149141Sbrian UINT32 Flags) 31249141Sbrian{ 31349141Sbrian ACPI_STATUS Status = AE_OK; 31449141Sbrian ACPI_GPE_EVENT_INFO *GpeEventInfo; 31549141Sbrian 31649141Sbrian 31749141Sbrian ACPI_FUNCTION_TRACE ("AcpiEnableGpe"); 31849141Sbrian 31949141Sbrian 32049141Sbrian /* Use semaphore lock if not executing at interrupt level */ 32149141Sbrian 32249141Sbrian if (Flags & ACPI_NOT_ISR) 32349141Sbrian { 32449141Sbrian Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 32549141Sbrian if (ACPI_FAILURE (Status)) 32649141Sbrian { 32749141Sbrian return_ACPI_STATUS (Status); 32849141Sbrian } 32949141Sbrian } 33049141Sbrian 33149141Sbrian /* Ensure that we have a valid GPE number */ 33249141Sbrian 33349141Sbrian GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); 33449141Sbrian if (!GpeEventInfo) 33549141Sbrian { 33649141Sbrian Status = AE_BAD_PARAMETER; 33749141Sbrian goto UnlockAndExit; 33849141Sbrian } 33949141Sbrian 34049141Sbrian /* Check for Wake vs Runtime GPE */ 34149141Sbrian 34249141Sbrian if (Flags & ACPI_EVENT_WAKE_ENABLE) 34349141Sbrian { 34449141Sbrian /* Ensure the requested wake GPE is disabled */ 34549141Sbrian 34649141Sbrian Status = AcpiHwDisableGpe (GpeEventInfo); 34749141Sbrian if (ACPI_FAILURE (Status)) 34849141Sbrian { 34949141Sbrian goto UnlockAndExit; 35049141Sbrian } 35143902Sbrian 35243902Sbrian /* Defer Enable of Wake GPE until sleep time */ 35343948Sbrian 35443948Sbrian AcpiHwEnableGpeForWakeup (GpeEventInfo); 35543948Sbrian } 35643948Sbrian else 35743948Sbrian { 35843948Sbrian /* Enable the requested runtime GPE */ 35943948Sbrian 36043948Sbrian Status = AcpiHwEnableGpe (GpeEventInfo); 36143948Sbrian if (ACPI_FAILURE (Status)) 36243948Sbrian { 36343948Sbrian goto UnlockAndExit; 36443948Sbrian } 36543948Sbrian } 36643948Sbrian 36743948Sbrian 36843948SbrianUnlockAndExit: 36943948Sbrian if (Flags & ACPI_NOT_ISR) 37043948Sbrian { 37143948Sbrian (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 37243948Sbrian } 37343948Sbrian return_ACPI_STATUS (Status); 37443948Sbrian} 37543948Sbrian 37643948Sbrian 37743948Sbrian/******************************************************************************* 37843948Sbrian * 37943948Sbrian * FUNCTION: AcpiDisableEvent 38043948Sbrian * 38143948Sbrian * PARAMETERS: Event - The fixed eventto be enabled 38243902Sbrian * Flags - Reserved 38343948Sbrian * 38443902Sbrian * RETURN: Status 38543948Sbrian * 38643902Sbrian * DESCRIPTION: Disable an ACPI event (fixed) 38743902Sbrian * 38843902Sbrian ******************************************************************************/ 38943902Sbrian 39043948SbrianACPI_STATUS 39143902SbrianAcpiDisableEvent ( 39243902Sbrian UINT32 Event, 39343948Sbrian UINT32 Flags) 39443948Sbrian{ 39543948Sbrian ACPI_STATUS Status = AE_OK; 39643948Sbrian UINT32 Value; 39743948Sbrian 39843948Sbrian 39943948Sbrian ACPI_FUNCTION_TRACE ("AcpiDisableEvent"); 40043902Sbrian 40143948Sbrian 40243948Sbrian /* Decode the Fixed Event */ 40343948Sbrian 40443948Sbrian if (Event > ACPI_EVENT_MAX) 40543948Sbrian { 40643902Sbrian return_ACPI_STATUS (AE_BAD_PARAMETER); 40743902Sbrian } 40843902Sbrian 40943902Sbrian /* 41043902Sbrian * Disable the requested fixed event (by writing a zero to the 41143902Sbrian * enable register bit) 41243902Sbrian */ 41343902Sbrian Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 41443902Sbrian 0, ACPI_MTX_LOCK); 41543902Sbrian if (ACPI_FAILURE (Status)) 41643902Sbrian { 41743902Sbrian return_ACPI_STATUS (Status); 41843902Sbrian } 41946103Sbrian 42043902Sbrian Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 42143902Sbrian &Value, ACPI_MTX_LOCK); 42243902Sbrian if (ACPI_FAILURE (Status)) 42343902Sbrian { 42443902Sbrian return_ACPI_STATUS (Status); 42543902Sbrian } 42643902Sbrian 42743902Sbrian if (Value != 0) 42843902Sbrian { 42943902Sbrian ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 43043902Sbrian "Could not disable %s events\n", AcpiUtGetEventName (Event))); 43143902Sbrian return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); 43243902Sbrian } 43343902Sbrian 43443902Sbrian return_ACPI_STATUS (Status); 43543902Sbrian} 43643902Sbrian 43743902Sbrian 43843948Sbrian/******************************************************************************* 43943948Sbrian * 44043948Sbrian * FUNCTION: AcpiDisableGpe 44143902Sbrian * 44243902Sbrian * PARAMETERS: GpeDevice - Parent GPE Device 44343902Sbrian * GpeNumber - GPE level within the GPE block 44443902Sbrian * Flags - Just enable, or also wake enable? 44545070Sbrian * Called from ISR or not 44645070Sbrian * 44743902Sbrian * RETURN: Status 44843902Sbrian * 44943902Sbrian * DESCRIPTION: Disable an ACPI event (general purpose) 45043902Sbrian * 45143902Sbrian ******************************************************************************/ 45243902Sbrian 45343902SbrianACPI_STATUS 45443902SbrianAcpiDisableGpe ( 45543902Sbrian ACPI_HANDLE GpeDevice, 45643902Sbrian UINT32 GpeNumber, 45743902Sbrian UINT32 Flags) 45843902Sbrian{ 45943902Sbrian ACPI_STATUS Status = AE_OK; 46043902Sbrian ACPI_GPE_EVENT_INFO *GpeEventInfo; 46143902Sbrian 46243902Sbrian 46343902Sbrian ACPI_FUNCTION_TRACE ("AcpiDisableGpe"); 46443902Sbrian 46543902Sbrian 46643902Sbrian /* Use semaphore lock if not executing at interrupt level */ 46743902Sbrian 46843902Sbrian if (Flags & ACPI_NOT_ISR) 46943902Sbrian { 47043948Sbrian Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 47143948Sbrian if (ACPI_FAILURE (Status)) 47243902Sbrian { 47343948Sbrian return_ACPI_STATUS (Status); 47443948Sbrian } 47543902Sbrian } 47643948Sbrian 47743948Sbrian /* Ensure that we have a valid GPE number */ 47843902Sbrian 47943902Sbrian GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); 48043902Sbrian if (!GpeEventInfo) 48143902Sbrian { 48243902Sbrian Status = AE_BAD_PARAMETER; 48343902Sbrian goto UnlockAndExit; 48443902Sbrian } 48543902Sbrian 48643902Sbrian /* 48743902Sbrian * Only disable the requested GPE number for wake if specified. 48843902Sbrian * Otherwise, turn it totally off 48943902Sbrian */ 49043902Sbrian if (Flags & ACPI_EVENT_WAKE_DISABLE) 49143902Sbrian { 49243902Sbrian AcpiHwDisableGpeForWakeup (GpeEventInfo); 49343948Sbrian } 49443948Sbrian else 49543948Sbrian { 49643902Sbrian Status = AcpiHwDisableGpe (GpeEventInfo); 49743948Sbrian } 49843948Sbrian 49943902SbrianUnlockAndExit: 50043902Sbrian if (Flags & ACPI_NOT_ISR) 50149977Sbrian { 50249977Sbrian (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 50346103Sbrian } 50443902Sbrian return_ACPI_STATUS (Status); 50543948Sbrian} 50643948Sbrian 50743948Sbrian 50843948Sbrian/******************************************************************************* 50943902Sbrian * 51043948Sbrian * FUNCTION: AcpiClearEvent 51143948Sbrian * 51243948Sbrian * PARAMETERS: Event - The fixed event to be cleared 51343902Sbrian * 51451700Sbrian * RETURN: Status 51551700Sbrian * 51651700Sbrian * DESCRIPTION: Clear an ACPI event (fixed) 51743902Sbrian * 51843902Sbrian ******************************************************************************/ 51943902Sbrian 52051700SbrianACPI_STATUS 52143902SbrianAcpiClearEvent ( 52243902Sbrian UINT32 Event) 52343902Sbrian{ 52443948Sbrian ACPI_STATUS Status = AE_OK; 52543948Sbrian 52643948Sbrian 52743948Sbrian ACPI_FUNCTION_TRACE ("AcpiClearEvent"); 52843948Sbrian 52943948Sbrian 53043948Sbrian /* Decode the Fixed Event */ 53143948Sbrian 53243948Sbrian if (Event > ACPI_EVENT_MAX) 53343948Sbrian { 53443902Sbrian return_ACPI_STATUS (AE_BAD_PARAMETER); 53543948Sbrian } 53643948Sbrian 53743902Sbrian /* 53843902Sbrian * Clear the requested fixed event (By writing a one to the 53943902Sbrian * status register bit) 54043902Sbrian */ 54143902Sbrian Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId, 54243902Sbrian 1, ACPI_MTX_LOCK); 54343948Sbrian 54443948Sbrian return_ACPI_STATUS (Status); 54543902Sbrian} 54643902Sbrian 54743902Sbrian 54843902Sbrian/******************************************************************************* 54943902Sbrian * 55043902Sbrian * FUNCTION: AcpiClearGpe 55143902Sbrian * 55243902Sbrian * PARAMETERS: GpeDevice - Parent GPE Device 55343902Sbrian * GpeNumber - GPE level within the GPE block 55443948Sbrian * Flags - Called from an ISR or not 55543902Sbrian * 55643948Sbrian * RETURN: Status 55743948Sbrian * 55843902Sbrian * DESCRIPTION: Clear an ACPI event (general purpose) 55943902Sbrian * 56043902Sbrian ******************************************************************************/ 56143902Sbrian 56243902SbrianACPI_STATUS 56343902SbrianAcpiClearGpe ( 56443902Sbrian ACPI_HANDLE GpeDevice, 56543902Sbrian UINT32 GpeNumber, 56643902Sbrian UINT32 Flags) 56743902Sbrian{ 56843902Sbrian ACPI_STATUS Status = AE_OK; 56943902Sbrian ACPI_GPE_EVENT_INFO *GpeEventInfo; 57043902Sbrian 57143902Sbrian 57243902Sbrian ACPI_FUNCTION_TRACE ("AcpiClearGpe"); 57343902Sbrian 57443902Sbrian 57543902Sbrian /* Use semaphore lock if not executing at interrupt level */ 57643902Sbrian 57743902Sbrian if (Flags & ACPI_NOT_ISR) 57843902Sbrian { 57943902Sbrian Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 58043902Sbrian if (ACPI_FAILURE (Status)) 58143902Sbrian { 58243902Sbrian return_ACPI_STATUS (Status); 58343902Sbrian } 58443902Sbrian } 58543902Sbrian 58643948Sbrian /* Ensure that we have a valid GPE number */ 58743948Sbrian 58843948Sbrian GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); 58943948Sbrian if (!GpeEventInfo) 59043948Sbrian { 59143948Sbrian Status = AE_BAD_PARAMETER; 59243948Sbrian goto UnlockAndExit; 59343948Sbrian } 59443948Sbrian 59543948Sbrian Status = AcpiHwClearGpe (GpeEventInfo); 59643948Sbrian 59743948SbrianUnlockAndExit: 59843948Sbrian if (Flags & ACPI_NOT_ISR) 59943948Sbrian { 60043948Sbrian (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 60143948Sbrian } 60243948Sbrian return_ACPI_STATUS (Status); 60343948Sbrian} 60443948Sbrian 60543948Sbrian 60643948Sbrian/******************************************************************************* 60743948Sbrian * 60843948Sbrian * FUNCTION: AcpiGetEventStatus 60943948Sbrian * 61043948Sbrian * PARAMETERS: Event - The fixed event 61153540Sbrian * Event Status - Where the current status of the event will 61261097Sbrian * be returned 61361097Sbrian * 61461097Sbrian * RETURN: Status 61553540Sbrian * 61653540Sbrian * DESCRIPTION: Obtains and returns the current status of the event 61753540Sbrian * 61853540Sbrian ******************************************************************************/ 61953540Sbrian 62053540SbrianACPI_STATUS 62153540SbrianAcpiGetEventStatus ( 62253540Sbrian UINT32 Event, 62353540Sbrian ACPI_EVENT_STATUS *EventStatus) 62453540Sbrian{ 62553540Sbrian ACPI_STATUS Status = AE_OK; 62653540Sbrian 62753540Sbrian 62853540Sbrian ACPI_FUNCTION_TRACE ("AcpiGetEventStatus"); 62953540Sbrian 63053540Sbrian 63153540Sbrian if (!EventStatus) 63253540Sbrian { 63353540Sbrian return_ACPI_STATUS (AE_BAD_PARAMETER); 63453540Sbrian } 63553540Sbrian 63653540Sbrian /* Decode the Fixed Event */ 63753540Sbrian 63853540Sbrian if (Event > ACPI_EVENT_MAX) 63953540Sbrian { 640 return_ACPI_STATUS (AE_BAD_PARAMETER); 641 } 642 643 /* Get the status of the requested fixed event */ 644 645 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId, 646 EventStatus, ACPI_MTX_LOCK); 647 648 return_ACPI_STATUS (Status); 649} 650 651 652/******************************************************************************* 653 * 654 * FUNCTION: AcpiGetGpeStatus 655 * 656 * PARAMETERS: GpeDevice - Parent GPE Device 657 * GpeNumber - GPE level within the GPE block 658 * Flags - Called from an ISR or not 659 * Event Status - Where the current status of the event will 660 * be returned 661 * 662 * RETURN: Status 663 * 664 * DESCRIPTION: Get status of an event (general purpose) 665 * 666 ******************************************************************************/ 667 668ACPI_STATUS 669AcpiGetGpeStatus ( 670 ACPI_HANDLE GpeDevice, 671 UINT32 GpeNumber, 672 UINT32 Flags, 673 ACPI_EVENT_STATUS *EventStatus) 674{ 675 ACPI_STATUS Status = AE_OK; 676 ACPI_GPE_EVENT_INFO *GpeEventInfo; 677 678 679 ACPI_FUNCTION_TRACE ("AcpiGetGpeStatus"); 680 681 682 /* Use semaphore lock if not executing at interrupt level */ 683 684 if (Flags & ACPI_NOT_ISR) 685 { 686 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 687 if (ACPI_FAILURE (Status)) 688 { 689 return_ACPI_STATUS (Status); 690 } 691 } 692 693 /* Ensure that we have a valid GPE number */ 694 695 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); 696 if (!GpeEventInfo) 697 { 698 Status = AE_BAD_PARAMETER; 699 goto UnlockAndExit; 700 } 701 702 /* Obtain status on the requested GPE number */ 703 704 Status = AcpiHwGetGpeStatus (GpeEventInfo, EventStatus); 705 706UnlockAndExit: 707 if (Flags & ACPI_NOT_ISR) 708 { 709 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 710 } 711 return_ACPI_STATUS (Status); 712} 713 714 715/******************************************************************************* 716 * 717 * FUNCTION: AcpiInstallGpeBlock 718 * 719 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device 720 * GpeBlockAddress - Address and SpaceID 721 * RegisterCount - Number of GPE register pairs in the block 722 * InterruptLevel - H/W interrupt for the block 723 * 724 * RETURN: Status 725 * 726 * DESCRIPTION: Create and Install a block of GPE registers 727 * 728 ******************************************************************************/ 729 730ACPI_STATUS 731AcpiInstallGpeBlock ( 732 ACPI_HANDLE GpeDevice, 733 ACPI_GENERIC_ADDRESS *GpeBlockAddress, 734 UINT32 RegisterCount, 735 UINT32 InterruptLevel) 736{ 737 ACPI_STATUS Status; 738 ACPI_OPERAND_OBJECT *ObjDesc; 739 ACPI_NAMESPACE_NODE *Node; 740 ACPI_GPE_BLOCK_INFO *GpeBlock; 741 742 743 ACPI_FUNCTION_TRACE ("AcpiInstallGpeBlock"); 744 745 746 if ((!GpeDevice) || 747 (!GpeBlockAddress) || 748 (!RegisterCount)) 749 { 750 return_ACPI_STATUS (AE_BAD_PARAMETER); 751 } 752 753 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 754 if (ACPI_FAILURE (Status)) 755 { 756 return (Status); 757 } 758 759 Node = AcpiNsMapHandleToNode (GpeDevice); 760 if (!Node) 761 { 762 Status = AE_BAD_PARAMETER; 763 goto UnlockAndExit; 764 } 765 766 /* 767 * For user-installed GPE Block Devices, the GpeBlockBaseNumber 768 * is always zero 769 */ 770 Status = AcpiEvCreateGpeBlock (Node, GpeBlockAddress, RegisterCount, 771 0, InterruptLevel, &GpeBlock); 772 if (ACPI_FAILURE (Status)) 773 { 774 goto UnlockAndExit; 775 } 776 777 /* Get the DeviceObject attached to the node */ 778 779 ObjDesc = AcpiNsGetAttachedObject (Node); 780 if (!ObjDesc) 781 { 782 /* No object, create a new one */ 783 784 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE); 785 if (!ObjDesc) 786 { 787 Status = AE_NO_MEMORY; 788 goto UnlockAndExit; 789 } 790 791 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_DEVICE); 792 793 /* Remove local reference to the object */ 794 795 AcpiUtRemoveReference (ObjDesc); 796 797 if (ACPI_FAILURE (Status)) 798 { 799 goto UnlockAndExit; 800 } 801 } 802 803 /* Install the GPE block in the DeviceObject */ 804 805 ObjDesc->Device.GpeBlock = GpeBlock; 806 807 808UnlockAndExit: 809 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 810 return_ACPI_STATUS (Status); 811} 812 813 814/******************************************************************************* 815 * 816 * FUNCTION: AcpiRemoveGpeBlock 817 * 818 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device 819 * 820 * RETURN: Status 821 * 822 * DESCRIPTION: Remove a previously installed block of GPE registers 823 * 824 ******************************************************************************/ 825 826ACPI_STATUS 827AcpiRemoveGpeBlock ( 828 ACPI_HANDLE GpeDevice) 829{ 830 ACPI_OPERAND_OBJECT *ObjDesc; 831 ACPI_STATUS Status; 832 ACPI_NAMESPACE_NODE *Node; 833 834 835 ACPI_FUNCTION_TRACE ("AcpiRemoveGpeBlock"); 836 837 838 if (!GpeDevice) 839 { 840 return_ACPI_STATUS (AE_BAD_PARAMETER); 841 } 842 843 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 844 if (ACPI_FAILURE (Status)) 845 { 846 return (Status); 847 } 848 849 Node = AcpiNsMapHandleToNode (GpeDevice); 850 if (!Node) 851 { 852 Status = AE_BAD_PARAMETER; 853 goto UnlockAndExit; 854 } 855 856 /* Get the DeviceObject attached to the node */ 857 858 ObjDesc = AcpiNsGetAttachedObject (Node); 859 if (!ObjDesc || 860 !ObjDesc->Device.GpeBlock) 861 { 862 return_ACPI_STATUS (AE_NULL_OBJECT); 863 } 864 865 /* Delete the GPE block (but not the DeviceObject) */ 866 867 Status = AcpiEvDeleteGpeBlock (ObjDesc->Device.GpeBlock); 868 if (ACPI_SUCCESS (Status)) 869 { 870 ObjDesc->Device.GpeBlock = NULL; 871 } 872 873UnlockAndExit: 874 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 875 return_ACPI_STATUS (Status); 876} 877 878