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+/******************************************************************************
+ *
+ * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
+ * $Revision: 22 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 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 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 EVENT_HANDLING
+ 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)
+ {
+ DEBUG_PRINT (ACPI_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())
+ {
+ DEBUG_PRINT (ACPI_WARN,
+ ("AcpiEnable: Only legacy mode supported!\n"));
+ return_ACPI_STATUS (AE_ERROR);
+ }
+
+ /* Transition to ACPI mode */
+
+ Status = AcpiHwSetMode (SYS_MODE_ACPI);
+ if (ACPI_FAILURE (Status))
+ {
+ DEBUG_PRINT (ACPI_FATAL, ("Could not transition to ACPI mode.\n"));
+ return_ACPI_STATUS (Status);
+ }
+
+ DEBUG_PRINT (ACPI_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))
+ {
+ DEBUG_PRINT (ACPI_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
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Enable an ACPI event (fixed and general purpose)
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEnableEvent (
+ UINT32 Event,
+ UINT32 Type)
+{
+ 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)
+ */
+
+ AcpiHwRegisterAccess (ACPI_WRITE, TRUE, RegisterId, 1);
+ break;
+
+
+ case ACPI_EVENT_GPE:
+
+ /* Ensure that we have a valid GPE number */
+
+ if ((Event >= NUM_GPE) ||
+ (AcpiGbl_GpeValid[Event] == ACPI_GPE_INVALID))
+ {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+
+ /* Enable the requested GPE number */
+
+ AcpiHwEnableGpe (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
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Disable an ACPI event (fixed and general purpose)
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiDisableEvent (
+ UINT32 Event,
+ UINT32 Type)
+{
+ 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)
+ */
+
+ AcpiHwRegisterAccess (ACPI_WRITE, TRUE, RegisterId, 0);
+ break;
+
+
+ case ACPI_EVENT_GPE:
+
+ /* Ensure that we have a valid GPE number */
+
+ if ((Event >= NUM_GPE) ||
+ (AcpiGbl_GpeValid[Event] == ACPI_GPE_INVALID))
+ {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Disable the requested GPE number */
+
+ AcpiHwDisableGpe (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)
+ */
+
+ AcpiHwRegisterAccess (ACPI_WRITE, TRUE, RegisterId, 1);
+ break;
+
+
+ case ACPI_EVENT_GPE:
+
+ /* Ensure that we have a valid GPE number */
+
+ if ((Event >= NUM_GPE) ||
+ (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 = AcpiHwRegisterAccess (ACPI_READ, TRUE, RegisterId);
+ break;
+
+
+ case ACPI_EVENT_GPE:
+
+ /* Ensure that we have a valid GPE number */
+
+ if ((Event >= NUM_GPE) ||
+ (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);
+}
+
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