/******************************************************************************* * * Module Name: evsci - System Control Interrupt configuration and * legacy to ACPI mode state transition functions * $Revision: 67 $ * ******************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999, 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 "acnamesp.h" #include "achware.h" #include "acevents.h" #define _COMPONENT EVENT_HANDLING MODULE_NAME ("evsci") /* * Elements correspond to counts for TMR, NOT_USED, GBL, PWR_BTN, SLP_BTN, RTC, * and GENERAL respectively. These counts are modified by the ACPI interrupt * handler. * * TBD: [Investigate] Note that GENERAL should probably be split out into * one element for each bit in the GPE registers */ /******************************************************************************* * * FUNCTION: AcpiEvSciHandler * * PARAMETERS: Context - Calling Context * * RETURN: Status code indicates whether interrupt was handled. * * DESCRIPTION: Interrupt handler that will figure out what function or * control method to call to deal with a SCI. Installed * using BU interrupt support. * ******************************************************************************/ static UINT32 AcpiEvSciHandler (void *Context) { UINT32 InterruptHandled = INTERRUPT_NOT_HANDLED; FUNCTION_TRACE("EvSciHandler"); /* * Make sure that ACPI is enabled by checking SCI_EN. Note that we are * required to treat the SCI interrupt as sharable, level, active low. */ if (!AcpiHwRegisterBitAccess (ACPI_READ, ACPI_MTX_DO_NOT_LOCK, SCI_EN)) { /* ACPI is not enabled; this interrupt cannot be for us */ return_VALUE (INTERRUPT_NOT_HANDLED); } /* * Fixed AcpiEvents: * ------------- * Check for and dispatch any Fixed AcpiEvents that have occurred */ InterruptHandled |= AcpiEvFixedEventDetect (); /* * GPEs: * ----- * Check for and dispatch any GPEs that have occurred */ InterruptHandled |= AcpiEvGpeDetect (); return_VALUE (InterruptHandled); } /****************************************************************************** * * FUNCTION: AcpiEvInstallSciHandler * * PARAMETERS: none * * RETURN: Status * * DESCRIPTION: Installs SCI handler. * ******************************************************************************/ UINT32 AcpiEvInstallSciHandler (void) { UINT32 Except = AE_OK; FUNCTION_TRACE ("EvInstallSciHandler"); Except = AcpiOsInstallInterruptHandler ((UINT32) AcpiGbl_FADT->SciInt, AcpiEvSciHandler, NULL); return_ACPI_STATUS (Except); } /****************************************************************************** * * FUNCTION: AcpiEvRemoveSciHandler * * PARAMETERS: none * * RETURN: E_OK if handler uninstalled OK, E_ERROR if handler was not * installed to begin with * * DESCRIPTION: Restores original status of all fixed event enable bits and * removes SCI handler. * ******************************************************************************/ ACPI_STATUS AcpiEvRemoveSciHandler (void) { FUNCTION_TRACE ("EvRemoveSciHandler"); #if 0 /* TBD:[Investigate] Figure this out!! Disable all events first ??? */ if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (TMR_FIXED_EVENT)) { AcpiEventDisableEvent (TMR_FIXED_EVENT); } if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (GBL_FIXED_EVENT)) { AcpiEventDisableEvent (GBL_FIXED_EVENT); } if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (PWR_BTN_FIXED_EVENT)) { AcpiEventDisableEvent (PWR_BTN_FIXED_EVENT); } if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (SLP_BTN_FIXED_EVENT)) { AcpiEventDisableEvent (SLP_BTN_FIXED_EVENT); } if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (RTC_FIXED_EVENT)) { AcpiEventDisableEvent (RTC_FIXED_EVENT); } OriginalFixedEnableBitStatus = 0; #endif AcpiOsRemoveInterruptHandler ((UINT32) AcpiGbl_FADT->SciInt, AcpiEvSciHandler); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiEvSciCount * * PARAMETERS: Event Event that generated an SCI. * * RETURN: Number of SCI's for requested event since last time * SciOccured() was called for this event. * * DESCRIPTION: Checks to see if SCI has been generated from requested source * since the last time this function was called. * ******************************************************************************/ #ifdef ACPI_DEBUG UINT32 AcpiEvSciCount ( UINT32 Event) { UINT32 Count; FUNCTION_TRACE ("EvSciCount"); /* * Elements correspond to counts for TMR, NOT_USED, GBL, * PWR_BTN, SLP_BTN, RTC, and GENERAL respectively. */ if (Event >= NUM_FIXED_EVENTS) { Count = (UINT32) -1; } else { Count = AcpiGbl_EventCount[Event]; } return_VALUE (Count); } #endif /******************************************************************************* * * FUNCTION: AcpiEvRestoreAcpiState * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Restore the original ACPI state of the machine * ******************************************************************************/ void AcpiEvRestoreAcpiState (void) { UINT32 Index; FUNCTION_TRACE ("EvRestoreAcpiState"); /* Restore the state of the chipset enable bits. */ if (AcpiGbl_RestoreAcpiChipset == TRUE) { /* Restore the fixed events */ if (AcpiHwRegisterRead (ACPI_MTX_LOCK, PM1_EN) != AcpiGbl_Pm1EnableRegisterSave) { AcpiHwRegisterWrite (ACPI_MTX_LOCK, PM1_EN, AcpiGbl_Pm1EnableRegisterSave); } /* Ensure that all status bits are clear */ AcpiHwClearAcpiStatus (); /* Now restore the GPEs */ for (Index = 0; Index < DIV_2 (AcpiGbl_FADT->Gpe0BlkLen); Index++) { if (AcpiHwRegisterRead (ACPI_MTX_LOCK, GPE0_EN_BLOCK | Index) != AcpiGbl_Gpe0EnableRegisterSave[Index]) { AcpiHwRegisterWrite (ACPI_MTX_LOCK, GPE0_EN_BLOCK | Index, AcpiGbl_Gpe0EnableRegisterSave[Index]); } } /* GPE 1 present? */ if (AcpiGbl_FADT->Gpe1BlkLen) { for (Index = 0; Index < DIV_2 (AcpiGbl_FADT->Gpe1BlkLen); Index++) { if (AcpiHwRegisterRead (ACPI_MTX_LOCK, GPE1_EN_BLOCK | Index) != AcpiGbl_Gpe1EnableRegisterSave[Index]) { AcpiHwRegisterWrite (ACPI_MTX_LOCK, GPE1_EN_BLOCK | Index, AcpiGbl_Gpe1EnableRegisterSave[Index]); } } } if (AcpiHwGetMode() != AcpiGbl_OriginalMode) { AcpiHwSetMode (AcpiGbl_OriginalMode); } } return_VOID; } /****************************************************************************** * * FUNCTION: AcpiEvTerminate * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: free memory allocated for table storage. * ******************************************************************************/ void AcpiEvTerminate (void) { FUNCTION_TRACE ("EvTerminate"); /* * Free global tables, etc. */ if (AcpiGbl_GpeRegisters) { AcpiCmFree (AcpiGbl_GpeRegisters); } if (AcpiGbl_GpeInfo) { AcpiCmFree (AcpiGbl_GpeInfo); } return_VOID; }