/****************************************************************************** * * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable * $Revision: 38 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 prton 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. * *****************************************************************************/ #define __EVXFEVNT_C__ #include "acpi.h" #include "achware.h" #include "acnamesp.h" #include "acevents.h" #include "amlcode.h" #include "acinterp.h" #define _COMPONENT ACPI_EVENTS MODULE_NAME ("evxfevnt") /******************************************************************************* * * FUNCTION: AcpiEnable * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Transfers the system into ACPI mode. * ******************************************************************************/ ACPI_STATUS AcpiEnable (void) { ACPI_STATUS Status; FUNCTION_TRACE ("AcpiEnable"); /* Make sure we've got ACPI tables */ if (!AcpiGbl_DSDT) { ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No ACPI tables present!\n")); return_ACPI_STATUS (AE_NO_ACPI_TABLES); } /* Make sure the BIOS supports ACPI mode */ if (SYS_MODE_LEGACY == AcpiHwGetModeCapabilities()) { ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Only legacy mode supported!\n")); return_ACPI_STATUS (AE_ERROR); } /* Transition to ACPI mode */ Status = AcpiHwSetMode (SYS_MODE_ACPI); if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_FATAL, "Could not transition to ACPI mode.\n")); return_ACPI_STATUS (Status); } ACPI_DEBUG_PRINT ((ACPI_DB_OK, "Transition to ACPI mode successful\n")); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiDisable * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Returns the system to original ACPI/legacy mode, and * uninstalls the SCI interrupt handler. * ******************************************************************************/ ACPI_STATUS AcpiDisable (void) { ACPI_STATUS Status; FUNCTION_TRACE ("AcpiDisable"); /* Restore original mode */ Status = AcpiHwSetMode (AcpiGbl_OriginalMode); if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unable to transition to original mode")); return_ACPI_STATUS (Status); } /* Unload the SCI interrupt handler */ AcpiEvRemoveSciHandler (); AcpiEvRestoreAcpiState (); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiEnableEvent * * PARAMETERS: Event - The fixed event or GPE to be enabled * Type - The type of event * Flags - Just enable, or also wake enable? * * RETURN: Status * * DESCRIPTION: Enable an ACPI event (fixed and general purpose) * ******************************************************************************/ ACPI_STATUS AcpiEnableEvent ( UINT32 Event, UINT32 Type, UINT32 Flags) { ACPI_STATUS Status = AE_OK; UINT32 RegisterId; FUNCTION_TRACE ("AcpiEnableEvent"); /* The Type must be either Fixed AcpiEvent or GPE */ switch (Type) { case ACPI_EVENT_FIXED: /* Decode the Fixed AcpiEvent */ switch (Event) { case ACPI_EVENT_PMTIMER: RegisterId = TMR_EN; break; case ACPI_EVENT_GLOBAL: RegisterId = GBL_EN; break; case ACPI_EVENT_POWER_BUTTON: RegisterId = PWRBTN_EN; break; case ACPI_EVENT_SLEEP_BUTTON: RegisterId = SLPBTN_EN; break; case ACPI_EVENT_RTC: RegisterId = RTC_EN; break; default: return_ACPI_STATUS (AE_BAD_PARAMETER); break; } /* * Enable the requested fixed event (by writing a one to the * enable register bit) */ AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, RegisterId, 1); if (1 != AcpiHwRegisterBitAccess(ACPI_READ, ACPI_MTX_LOCK, RegisterId)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Fixed event bit clear when it should be set\n")); return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); } break; case ACPI_EVENT_GPE: /* Ensure that we have a valid GPE number */ if ((Event > ACPI_GPE_MAX) || (AcpiGbl_GpeValid[Event] == ACPI_GPE_INVALID)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Enable the requested GPE number */ if (Flags & ACPI_EVENT_ENABLE) { AcpiHwEnableGpe (Event); } if (Flags & ACPI_EVENT_WAKE_ENABLE) { AcpiHwEnableGpeForWakeup (Event); } break; default: Status = AE_BAD_PARAMETER; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiDisableEvent * * PARAMETERS: Event - The fixed event or GPE to be enabled * Type - The type of event, fixed or general purpose * Flags - Wake disable vs. non-wake disable * * RETURN: Status * * DESCRIPTION: Disable an ACPI event (fixed and general purpose) * ******************************************************************************/ ACPI_STATUS AcpiDisableEvent ( UINT32 Event, UINT32 Type, UINT32 Flags) { ACPI_STATUS Status = AE_OK; UINT32 RegisterId; FUNCTION_TRACE ("AcpiDisableEvent"); /* The Type must be either Fixed AcpiEvent or GPE */ switch (Type) { case ACPI_EVENT_FIXED: /* Decode the Fixed AcpiEvent */ switch (Event) { case ACPI_EVENT_PMTIMER: RegisterId = TMR_EN; break; case ACPI_EVENT_GLOBAL: RegisterId = GBL_EN; break; case ACPI_EVENT_POWER_BUTTON: RegisterId = PWRBTN_EN; break; case ACPI_EVENT_SLEEP_BUTTON: RegisterId = SLPBTN_EN; break; case ACPI_EVENT_RTC: RegisterId = RTC_EN; break; default: return_ACPI_STATUS (AE_BAD_PARAMETER); break; } /* * Disable the requested fixed event (by writing a zero to the * enable register bit) */ AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, RegisterId, 0); if (0 != AcpiHwRegisterBitAccess(ACPI_READ, ACPI_MTX_LOCK, RegisterId)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Fixed event bit set when it should be clear,\n")); return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); } break; case ACPI_EVENT_GPE: /* Ensure that we have a valid GPE number */ if ((Event > ACPI_GPE_MAX) || (AcpiGbl_GpeValid[Event] == ACPI_GPE_INVALID)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Disable the requested GPE number */ if (Flags & ACPI_EVENT_DISABLE) { AcpiHwDisableGpe (Event); } if (Flags & ACPI_EVENT_WAKE_DISABLE) { AcpiHwDisableGpeForWakeup (Event); } break; default: Status = AE_BAD_PARAMETER; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiClearEvent * * PARAMETERS: Event - The fixed event or GPE to be cleared * Type - The type of event * * RETURN: Status * * DESCRIPTION: Clear an ACPI event (fixed and general purpose) * ******************************************************************************/ ACPI_STATUS AcpiClearEvent ( UINT32 Event, UINT32 Type) { ACPI_STATUS Status = AE_OK; UINT32 RegisterId; FUNCTION_TRACE ("AcpiClearEvent"); /* The Type must be either Fixed AcpiEvent or GPE */ switch (Type) { case ACPI_EVENT_FIXED: /* Decode the Fixed AcpiEvent */ switch (Event) { case ACPI_EVENT_PMTIMER: RegisterId = TMR_STS; break; case ACPI_EVENT_GLOBAL: RegisterId = GBL_STS; break; case ACPI_EVENT_POWER_BUTTON: RegisterId = PWRBTN_STS; break; case ACPI_EVENT_SLEEP_BUTTON: RegisterId = SLPBTN_STS; break; case ACPI_EVENT_RTC: RegisterId = RTC_STS; break; default: return_ACPI_STATUS (AE_BAD_PARAMETER); break; } /* * Clear the requested fixed event (By writing a one to the * status register bit) */ AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, RegisterId, 1); break; case ACPI_EVENT_GPE: /* Ensure that we have a valid GPE number */ if ((Event > ACPI_GPE_MAX) || (AcpiGbl_GpeValid[Event] == ACPI_GPE_INVALID)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } AcpiHwClearGpe (Event); break; default: Status = AE_BAD_PARAMETER; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiGetEventStatus * * PARAMETERS: Event - The fixed event or GPE * Type - The type of event * Status - 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, UINT32 Type, ACPI_EVENT_STATUS *EventStatus) { ACPI_STATUS Status = AE_OK; UINT32 RegisterId; FUNCTION_TRACE ("AcpiGetEventStatus"); if (!EventStatus) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* The Type must be either Fixed AcpiEvent or GPE */ switch (Type) { case ACPI_EVENT_FIXED: /* Decode the Fixed AcpiEvent */ switch (Event) { case ACPI_EVENT_PMTIMER: RegisterId = TMR_STS; break; case ACPI_EVENT_GLOBAL: RegisterId = GBL_STS; break; case ACPI_EVENT_POWER_BUTTON: RegisterId = PWRBTN_STS; break; case ACPI_EVENT_SLEEP_BUTTON: RegisterId = SLPBTN_STS; break; case ACPI_EVENT_RTC: RegisterId = RTC_STS; break; default: return_ACPI_STATUS (AE_BAD_PARAMETER); break; } /* Get the status of the requested fixed event */ *EventStatus = AcpiHwRegisterBitAccess (ACPI_READ, ACPI_MTX_LOCK, RegisterId); break; case ACPI_EVENT_GPE: /* Ensure that we have a valid GPE number */ if ((Event > ACPI_GPE_MAX) || (AcpiGbl_GpeValid[Event] == ACPI_GPE_INVALID)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Obtain status on the requested GPE number */ AcpiHwGetGpeStatus (Event, EventStatus); break; default: Status = AE_BAD_PARAMETER; } return_ACPI_STATUS (Status); }