| 0,0 → 1,430 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: evevent - Fixed Event handling and dispatch |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acevents.h" |
| |
| #define _COMPONENT ACPI_EVENTS |
| ACPI_MODULE_NAME ("evevent") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiEvFixedEventInitialize ( |
| void); |
| |
| static UINT32 |
| AcpiEvFixedEventDispatch ( |
| UINT32 Event); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvInitializeEvents |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize global data structures for ACPI events (Fixed, GPE) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEvInitializeEvents ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (EvInitializeEvents); |
| |
| |
| /* |
| * Initialize the Fixed and General Purpose Events. This is done prior to |
| * enabling SCIs to prevent interrupts from occurring before the handlers |
| * are installed. |
| */ |
| Status = AcpiEvFixedEventInitialize (); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Unable to initialize fixed events")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiEvGpeInitialize (); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Unable to initialize general purpose events")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvInstallFadtGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Completes initialization of the FADT-defined GPE blocks |
| * (0 and 1). This causes the _PRW methods to be run, so the HW |
| * must be fully initialized at this point, including global lock |
| * support. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEvInstallFadtGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (EvInstallFadtGpes); |
| |
| |
| /* Namespace must be locked */ |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* FADT GPE Block 0 */ |
| |
| (void) AcpiEvInitializeGpeBlock ( |
| AcpiGbl_FadtGpeDevice, AcpiGbl_GpeFadtBlocks[0]); |
| |
| /* FADT GPE Block 1 */ |
| |
| (void) AcpiEvInitializeGpeBlock ( |
| AcpiGbl_FadtGpeDevice, AcpiGbl_GpeFadtBlocks[1]); |
| |
| (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvInstallXruptHandlers |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Install interrupt handlers for the SCI and Global Lock |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEvInstallXruptHandlers ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (EvInstallXruptHandlers); |
| |
| |
| /* Install the SCI handler */ |
| |
| Status = AcpiEvInstallSciHandler (); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Unable to install System Control Interrupt handler")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Install the handler for the Global Lock */ |
| |
| Status = AcpiEvInitGlobalLockHandler (); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Unable to initialize Global Lock handler")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| AcpiGbl_EventsInitialized = TRUE; |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvFixedEventInitialize |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Install the fixed event handlers and disable all fixed events. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiEvFixedEventInitialize ( |
| void) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| |
| |
| /* |
| * Initialize the structure that keeps track of fixed event handlers and |
| * enable the fixed events. |
| */ |
| for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) |
| { |
| AcpiGbl_FixedEventHandlers[i].Handler = NULL; |
| AcpiGbl_FixedEventHandlers[i].Context = NULL; |
| |
| /* Disable the fixed event */ |
| |
| if (AcpiGbl_FixedEventInfo[i].EnableRegisterId != 0xFF) |
| { |
| Status = AcpiWriteBitRegister ( |
| AcpiGbl_FixedEventInfo[i].EnableRegisterId, |
| ACPI_DISABLE_EVENT); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvFixedEventDetect |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED |
| * |
| * DESCRIPTION: Checks the PM status register for active fixed events |
| * |
| ******************************************************************************/ |
| |
| UINT32 |
| AcpiEvFixedEventDetect ( |
| void) |
| { |
| UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED; |
| UINT32 FixedStatus; |
| UINT32 FixedEnable; |
| UINT32 i; |
| |
| |
| ACPI_FUNCTION_NAME (EvFixedEventDetect); |
| |
| |
| /* |
| * Read the fixed feature status and enable registers, as all the cases |
| * depend on their values. Ignore errors here. |
| */ |
| (void) AcpiHwRegisterRead (ACPI_REGISTER_PM1_STATUS, &FixedStatus); |
| (void) AcpiHwRegisterRead (ACPI_REGISTER_PM1_ENABLE, &FixedEnable); |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS, |
| "Fixed Event Block: Enable %08X Status %08X\n", |
| FixedEnable, FixedStatus)); |
| |
| /* |
| * Check for all possible Fixed Events and dispatch those that are active |
| */ |
| for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) |
| { |
| /* Both the status and enable bits must be on for this event */ |
| |
| if ((FixedStatus & AcpiGbl_FixedEventInfo[i].StatusBitMask) && |
| (FixedEnable & AcpiGbl_FixedEventInfo[i].EnableBitMask)) |
| { |
| /* Found an active (signalled) event */ |
| |
| AcpiFixedEventCount[i]++; |
| IntStatus |= AcpiEvFixedEventDispatch (i); |
| } |
| } |
| |
| return (IntStatus); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvFixedEventDispatch |
| * |
| * PARAMETERS: Event - Event type |
| * |
| * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED |
| * |
| * DESCRIPTION: Clears the status bit for the requested event, calls the |
| * handler that previously registered for the event. |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AcpiEvFixedEventDispatch ( |
| UINT32 Event) |
| { |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* Clear the status bit */ |
| |
| (void) AcpiWriteBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].StatusRegisterId, |
| ACPI_CLEAR_STATUS); |
| |
| /* |
| * Make sure we've got a handler. If not, report an error. The event is |
| * disabled to prevent further interrupts. |
| */ |
| if (NULL == AcpiGbl_FixedEventHandlers[Event].Handler) |
| { |
| (void) AcpiWriteBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
| ACPI_DISABLE_EVENT); |
| |
| ACPI_ERROR ((AE_INFO, |
| "No installed handler for fixed event [0x%08X]", |
| Event)); |
| |
| return (ACPI_INTERRUPT_NOT_HANDLED); |
| } |
| |
| /* Invoke the Fixed Event handler */ |
| |
| return ((AcpiGbl_FixedEventHandlers[Event].Handler)( |
| AcpiGbl_FixedEventHandlers[Event].Context)); |
| } |
| |
| |