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Diffstat (limited to 'sys/contrib/dev/acpica/evsci.c')
| -rw-r--r-- | sys/contrib/dev/acpica/evsci.c | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/evsci.c b/sys/contrib/dev/acpica/evsci.c new file mode 100644 index 0000000000000..fb43444818e1e --- /dev/null +++ b/sys/contrib/dev/acpica/evsci.c @@ -0,0 +1,448 @@ +/******************************************************************************* + * + * Module Name: evsci - System Control Interrupt configuration and + * legacy to ACPI mode state transition functions + * $Revision: 60 $ + * + ******************************************************************************/ + +/****************************************************************************** + * + * 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. + * + ******************************************************************************/ + +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 (!AcpiHwRegisterAccess (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_FACP->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_FACP->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 (AcpiOsIn16 (AcpiGbl_FACP->Pm1aEvtBlk + 2) != + AcpiGbl_Pm1EnableRegisterSave) + { + AcpiOsOut16 ((AcpiGbl_FACP->Pm1aEvtBlk + 2), + AcpiGbl_Pm1EnableRegisterSave); + } + + if (AcpiGbl_FACP->Pm1bEvtBlk) + { + if (AcpiOsIn16 (AcpiGbl_FACP->Pm1bEvtBlk + 2) != + AcpiGbl_Pm1EnableRegisterSave) + { + AcpiOsOut16 ((AcpiGbl_FACP->Pm1bEvtBlk + 2), + AcpiGbl_Pm1EnableRegisterSave); + } + } + + + /* Ensure that all status bits are clear */ + + AcpiHwClearAcpiStatus (); + + + /* Now restore the GPEs */ + + for (Index = 0; Index < DIV_2 (AcpiGbl_FACP->Gpe0BlkLen); Index++) + { + if (AcpiOsIn8 (AcpiGbl_FACP->Gpe0Blk + + DIV_2 (AcpiGbl_FACP->Gpe0BlkLen)) != + AcpiGbl_Gpe0EnableRegisterSave[Index]) + { + AcpiOsOut8 ((AcpiGbl_FACP->Gpe0Blk + + DIV_2 (AcpiGbl_FACP->Gpe0BlkLen)), + AcpiGbl_Gpe0EnableRegisterSave[Index]); + } + } + + if (AcpiGbl_FACP->Gpe1Blk && AcpiGbl_FACP->Gpe1BlkLen) + { + for (Index = 0; Index < DIV_2 (AcpiGbl_FACP->Gpe1BlkLen); Index++) + { + if (AcpiOsIn8 (AcpiGbl_FACP->Gpe1Blk + + DIV_2 (AcpiGbl_FACP->Gpe1BlkLen)) != + AcpiGbl_Gpe1EnableRegisterSave[Index]) + { + AcpiOsOut8 ((AcpiGbl_FACP->Gpe1Blk + + DIV_2 (AcpiGbl_FACP->Gpe1BlkLen)), + 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; +} + + |