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Diffstat (limited to 'sys/contrib/dev/acpica/Subsystem/Events/evevent.c')
| -rw-r--r-- | sys/contrib/dev/acpica/Subsystem/Events/evevent.c | 954 |
1 files changed, 0 insertions, 954 deletions
diff --git a/sys/contrib/dev/acpica/Subsystem/Events/evevent.c b/sys/contrib/dev/acpica/Subsystem/Events/evevent.c deleted file mode 100644 index 2738ea87b329..000000000000 --- a/sys/contrib/dev/acpica/Subsystem/Events/evevent.c +++ /dev/null @@ -1,954 +0,0 @@ -/****************************************************************************** - * - * Module Name: evevent - Fixed and General Purpose AcpiEvent - * handling and dispatch - * $Revision: 34 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 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 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 "achware.h" -#include "acevents.h" -#include "acnamesp.h" -#include "accommon.h" - -#define _COMPONENT EVENT_HANDLING - MODULE_NAME ("evevent") - - -/************************************************************************** - * - * FUNCTION: AcpiEvInitialize - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Ensures that the system control interrupt (SCI) is properly - * configured, disables SCI event sources, installs the SCI - * handler - * - *************************************************************************/ - -ACPI_STATUS -AcpiEvInitialize ( - void) -{ - ACPI_STATUS Status; - - - FUNCTION_TRACE ("EvInitialize"); - - - /* Make sure we have ACPI tables */ - - if (!AcpiGbl_DSDT) - { - DEBUG_PRINT (ACPI_WARN, ("EvInitialize: 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, - ("EvInitialize: Only legacy mode supported!\n")); - return_ACPI_STATUS (AE_ERROR); - } - - - AcpiGbl_OriginalMode = AcpiHwGetMode(); - - /* - * Initialize the Fixed and General Purpose AcpiEvents prior. This is - * done prior to enabling SCIs to prevent interrupts from occuring - * before handers are installed. - */ - - Status = AcpiEvFixedEventInitialize (); - if (ACPI_FAILURE (Status)) - { - DEBUG_PRINT (ACPI_FATAL, - ("EvInitialize: Unable to initialize fixed events.\n")); - return_ACPI_STATUS (Status); - } - - Status = AcpiEvGpeInitialize (); - if (ACPI_FAILURE (Status)) - { - DEBUG_PRINT (ACPI_FATAL, - ("EvInitialize: Unable to initialize general purpose events.\n")); - return_ACPI_STATUS (Status); - } - - /* Install the SCI handler */ - - Status = AcpiEvInstallSciHandler (); - if (ACPI_FAILURE (Status)) - { - DEBUG_PRINT (ACPI_FATAL, - ("EvInitialize: Unable to install System Control Interrupt Handler\n")); - return_ACPI_STATUS (Status); - } - - - /* Install handlers for control method GPE handlers (_Lxx, _Exx) */ - - Status = AcpiEvInitGpeControlMethods (); - if (ACPI_FAILURE (Status)) - { - DEBUG_PRINT (ACPI_FATAL, - ("EvInitialize: Unable to initialize Gpe control methods\n")); - return_ACPI_STATUS (Status); - } - - /* Install the handler for the Global Lock */ - - Status = AcpiEvInitGlobalLockHandler (); - if (ACPI_FAILURE (Status)) - { - DEBUG_PRINT (ACPI_FATAL, - ("EvInitialize: Unable to initialize Global Lock handler\n")); - return_ACPI_STATUS (Status); - } - - - return_ACPI_STATUS (Status); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvFixedEventInitialize - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Initialize the Fixed AcpiEvent data structures - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvFixedEventInitialize(void) -{ - int i = 0; - - /* Initialize the structure that keeps track of fixed event handlers */ - - for (i = 0; i < NUM_FIXED_EVENTS; i++) - { - AcpiGbl_FixedEventHandlers[i].Handler = NULL; - AcpiGbl_FixedEventHandlers[i].Context = NULL; - } - - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, TMR_EN, 0); - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, GBL_EN, 0); - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, PWRBTN_EN, 0); - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, SLPBTN_EN, 0); - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_LOCK, RTC_EN, 0); - - return (AE_OK); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvFixedEventDetect - * - * PARAMETERS: None - * - * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED - * - * DESCRIPTION: Checks the PM status register for fixed events - * - ******************************************************************************/ - -UINT32 -AcpiEvFixedEventDetect(void) -{ - UINT32 IntStatus = INTERRUPT_NOT_HANDLED; - UINT32 StatusRegister; - UINT32 EnableRegister; - - /* - * Read the fixed feature status and enable registers, as all the cases - * depend on their values. - */ - - StatusRegister = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, PM1_STS); - EnableRegister = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, PM1_EN); - - DEBUG_PRINT (TRACE_INTERRUPTS, - ("Fixed AcpiEvent Block: Enable = %08x\tStatus = %08x\n", - EnableRegister, StatusRegister)); - - - /* power management timer roll over */ - - if ((StatusRegister & ACPI_STATUS_PMTIMER) && - (EnableRegister & ACPI_ENABLE_PMTIMER)) - { - IntStatus |= AcpiEvFixedEventDispatch (ACPI_EVENT_PMTIMER); - } - - /* global event (BIOS want's the global lock) */ - - if ((StatusRegister & ACPI_STATUS_GLOBAL) && - (EnableRegister & ACPI_ENABLE_GLOBAL)) - { - IntStatus |= AcpiEvFixedEventDispatch (ACPI_EVENT_GLOBAL); - } - - /* power button event */ - - if ((StatusRegister & ACPI_STATUS_POWER_BUTTON) && - (EnableRegister & ACPI_ENABLE_POWER_BUTTON)) - { - IntStatus |= AcpiEvFixedEventDispatch (ACPI_EVENT_POWER_BUTTON); - } - - /* sleep button event */ - - if ((StatusRegister & ACPI_STATUS_SLEEP_BUTTON) && - (EnableRegister & ACPI_ENABLE_SLEEP_BUTTON)) - { - IntStatus |= AcpiEvFixedEventDispatch (ACPI_EVENT_SLEEP_BUTTON); - } - - 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. - * - ******************************************************************************/ - -UINT32 -AcpiEvFixedEventDispatch ( - UINT32 Event) -{ - UINT32 RegisterId; - - /* Clear the status bit */ - - 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 0; - break; - } - - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_DO_NOT_LOCK, RegisterId, 1); - - /* - * 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) - { - RegisterId = (PM1_EN | REGISTER_BIT_ID(RegisterId)); - - AcpiHwRegisterBitAccess (ACPI_WRITE, ACPI_MTX_DO_NOT_LOCK, - RegisterId, 0); - - REPORT_ERROR ( - ("EvGpeDispatch: No installed handler for fixed event [%08X]\n", - Event)); - - return (INTERRUPT_NOT_HANDLED); - } - - /* Invoke the handler */ - - return ((AcpiGbl_FixedEventHandlers[Event].Handler)( - AcpiGbl_FixedEventHandlers[Event].Context)); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvGpeInitialize - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Initialize the GPE data structures - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvGpeInitialize (void) -{ - UINT32 i; - UINT32 j; - UINT32 RegisterIndex; - UINT32 GpeNumber; - UINT16 Gpe0RegisterCount; - UINT16 Gpe1RegisterCount; - - - FUNCTION_TRACE ("EvGpeInitialize"); - - /* - * Set up various GPE counts - * - * You may ask,why are the GPE register block lengths divided by 2? - * From the ACPI 2.0 Spec, section, 4.7.1.6 General-Purpose Event - * Registers, we have, - * - * "Each register block contains two registers of equal length - * GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the - * GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN - * The length of the GPE1_STS and GPE1_EN registers is equal to - * half the GPE1_LEN. If a generic register block is not supported - * then its respective block pointer and block length values in the - * FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need - * to be the same size." - */ - - Gpe0RegisterCount = (UINT16) DIV_2 (AcpiGbl_FADT->Gpe0BlkLen); - Gpe1RegisterCount = (UINT16) DIV_2 (AcpiGbl_FADT->Gpe1BlkLen); - AcpiGbl_GpeRegisterCount = Gpe0RegisterCount + Gpe1RegisterCount; - - if (!AcpiGbl_GpeRegisterCount) - { - REPORT_WARNING (("Zero GPEs are defined in the FADT\n")); - return_ACPI_STATUS (AE_OK); - } - - /* - * Allocate the Gpe information block - */ - - AcpiGbl_GpeRegisters = AcpiCmCallocate (AcpiGbl_GpeRegisterCount * - sizeof (ACPI_GPE_REGISTERS)); - if (!AcpiGbl_GpeRegisters) - { - DEBUG_PRINT (ACPI_ERROR, - ("Could not allocate the GpeRegisters block\n")); - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* - * Allocate the Gpe dispatch handler block - * There are eight distinct GP events per register. - * Initialization to zeros is sufficient - */ - - AcpiGbl_GpeInfo = AcpiCmCallocate (MUL_8 (AcpiGbl_GpeRegisterCount) * - sizeof (ACPI_GPE_LEVEL_INFO)); - if (!AcpiGbl_GpeInfo) - { - AcpiCmFree (AcpiGbl_GpeRegisters); - DEBUG_PRINT (ACPI_ERROR, ("Could not allocate the GpeInfo block\n")); - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* Set the Gpe validation table to GPE_INVALID */ - - MEMSET (AcpiGbl_GpeValid, (int) ACPI_GPE_INVALID, NUM_GPE); - - /* - * Initialize the Gpe information and validation blocks. A goal of these - * blocks is to hide the fact that there are two separate GPE register sets - * In a given block, the status registers occupy the first half, and - * the enable registers occupy the second half. - */ - - /* GPE Block 0 */ - - RegisterIndex = 0; - - for (i = 0; i < Gpe0RegisterCount; i++) - { - AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr = - (UINT16) (ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe0Blk.Address) + i); - - AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr = - (UINT16) (ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe0Blk.Address) + i + Gpe0RegisterCount); - - AcpiGbl_GpeRegisters[RegisterIndex].GpeBase = (UINT8) MUL_8 (i); - - for (j = 0; j < 8; j++) - { - GpeNumber = AcpiGbl_GpeRegisters[RegisterIndex].GpeBase + j; - AcpiGbl_GpeValid[GpeNumber] = (UINT8) RegisterIndex; - } - - /* - * Clear the status/enable registers. Note that status registers - * are cleared by writing a '1', while enable registers are cleared - * by writing a '0'. - */ - AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, 0x00); - AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr, 0xFF); - - RegisterIndex++; - } - - /* GPE Block 1 */ - - for (i = 0; i < Gpe1RegisterCount; i++) - { - AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr = - (UINT16) (ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe1Blk.Address) + i); - - AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr = - (UINT16) (ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe1Blk.Address) + i + Gpe1RegisterCount); - - AcpiGbl_GpeRegisters[RegisterIndex].GpeBase = - (UINT8) (AcpiGbl_FADT->Gpe1Base + MUL_8 (i)); - - for (j = 0; j < 8; j++) - { - GpeNumber = AcpiGbl_GpeRegisters[RegisterIndex].GpeBase + j; - AcpiGbl_GpeValid[GpeNumber] = (UINT8) RegisterIndex; - } - - /* - * Clear the status/enable registers. Note that status registers - * are cleared by writing a '1', while enable registers are cleared - * by writing a '0'. - */ - AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, 0x00); - AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr, 0xFF); - - RegisterIndex++; - } - - DEBUG_PRINT (ACPI_INFO, - ("GPE registers: %X@%p (Blk0) %X@%p (Blk1)\n", - Gpe0RegisterCount, AcpiGbl_FADT->XGpe0Blk.Address, Gpe1RegisterCount, - AcpiGbl_FADT->XGpe1Blk.Address)); - - return_ACPI_STATUS (AE_OK); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvSaveMethodInfo - * - * PARAMETERS: None - * - * RETURN: None - * - * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a - * control method under the _GPE portion of the namespace. - * Extract the name and GPE type from the object, saving this - * information for quick lookup during GPE dispatch - * - * The name of each GPE control method is of the form: - * "_Lnn" or "_Enn" - * Where: - * L - means that the GPE is level triggered - * E - means that the GPE is edge triggered - * nn - is the GPE number - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiEvSaveMethodInfo ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *ObjDesc, - void **ReturnValue) -{ - UINT32 GpeNumber; - NATIVE_CHAR Name[ACPI_NAME_SIZE + 1]; - UINT8 Type; - - - /* Extract the name from the object and convert to a string */ - - MOVE_UNALIGNED32_TO_32 (Name, &((ACPI_NAMESPACE_NODE *) ObjHandle)->Name); - Name[ACPI_NAME_SIZE] = 0; - - /* - * Edge/Level determination is based on the 2nd INT8 of the method name - */ - if (Name[1] == 'L') - { - Type = ACPI_EVENT_LEVEL_TRIGGERED; - } - else if (Name[1] == 'E') - { - Type = ACPI_EVENT_EDGE_TRIGGERED; - } - else - { - /* Unknown method type, just ignore it! */ - - DEBUG_PRINT (ACPI_ERROR, - ("EvSaveMethodInfo: Unknown GPE method type: %s (name not of form _Lnn or _Enn)\n", - Name)); - return (AE_OK); - } - - /* Convert the last two characters of the name to the Gpe Number */ - - GpeNumber = STRTOUL (&Name[2], NULL, 16); - if (GpeNumber == ACPI_UINT32_MAX) - { - /* Conversion failed; invalid method, just ignore it */ - - DEBUG_PRINT (ACPI_ERROR, - ("EvSaveMethodInfo: Could not extract GPE number from name: %s (name not of form _Lnn or _Enn)\n", - Name)); - return (AE_OK); - } - - /* Ensure that we have a valid GPE number */ - - if (AcpiGbl_GpeValid[GpeNumber] == ACPI_GPE_INVALID) - { - /* Not valid, all we can do here is ignore it */ - - return (AE_OK); - } - - /* - * Now we can add this information to the GpeInfo block - * for use during dispatch of this GPE. - */ - - AcpiGbl_GpeInfo [GpeNumber].Type = Type; - AcpiGbl_GpeInfo [GpeNumber].MethodHandle = ObjHandle; - - - /* - * Enable the GPE (SCIs should be disabled at this point) - */ - - AcpiHwEnableGpe (GpeNumber); - - DEBUG_PRINT (ACPI_INFO, - ("EvSaveMethodInfo: Registered GPE method %s as GPE number %X\n", - Name, GpeNumber)); - return (AE_OK); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvInitGpeControlMethods - * - * PARAMETERS: None - * - * RETURN: None - * - * DESCRIPTION: Obtain the control methods associated with the GPEs. - * - * NOTE: Must be called AFTER namespace initialization! - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvInitGpeControlMethods (void) -{ - ACPI_STATUS Status; - - - FUNCTION_TRACE ("EvInitGpeControlMethods"); - - - /* Get a permanent handle to the _GPE object */ - - Status = AcpiGetHandle (NULL, "\\_GPE", &AcpiGbl_GpeObjHandle); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Traverse the namespace under \_GPE to find all methods there */ - - Status = AcpiWalkNamespace (ACPI_TYPE_METHOD, AcpiGbl_GpeObjHandle, - ACPI_UINT32_MAX, AcpiEvSaveMethodInfo, - NULL, NULL); - - return_ACPI_STATUS (Status); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvGpeDetect - * - * PARAMETERS: None - * - * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED - * - * DESCRIPTION: Detect if any GP events have occurred - * - ******************************************************************************/ - -UINT32 -AcpiEvGpeDetect (void) -{ - UINT32 IntStatus = INTERRUPT_NOT_HANDLED; - UINT32 i; - UINT32 j; - UINT8 EnabledStatusByte; - UINT8 BitMask; - - - /* - * Read all of the 8-bit GPE status and enable registers - * in both of the register blocks, saving all of it. - * Find all currently active GP events. - */ - - for (i = 0; i < AcpiGbl_GpeRegisterCount; i++) - { - AcpiGbl_GpeRegisters[i].Status = - AcpiOsIn8 (AcpiGbl_GpeRegisters[i].StatusAddr); - - AcpiGbl_GpeRegisters[i].Enable = - AcpiOsIn8 (AcpiGbl_GpeRegisters[i].EnableAddr); - - DEBUG_PRINT (TRACE_INTERRUPTS, - ("GPE block at %x - Enable: %08x\tStatus: %08x\n", - AcpiGbl_GpeRegisters[i].EnableAddr, AcpiGbl_GpeRegisters[i].Status, AcpiGbl_GpeRegisters[i].Enable)); - - /* First check if there is anything active at all in this register */ - - EnabledStatusByte = (UINT8) (AcpiGbl_GpeRegisters[i].Status & - AcpiGbl_GpeRegisters[i].Enable); - - if (!EnabledStatusByte) - { - /* No active GPEs in this register, move on */ - - continue; - } - - /* Now look at the individual GPEs in this byte register */ - - for (j = 0, BitMask = 1; j < 8; j++, BitMask <<= 1) - { - /* Examine one GPE bit */ - - if (EnabledStatusByte & BitMask) - { - /* - * Found an active GPE. Dispatch the event to a handler - * or method. - */ - IntStatus |= - AcpiEvGpeDispatch (AcpiGbl_GpeRegisters[i].GpeBase + j); - } - } - } - - return (IntStatus); -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvAsynchExecuteGpeMethod - * - * PARAMETERS: GpeNumber - The 0-based Gpe number - * - * RETURN: None - * - * DESCRIPTION: Perform the actual execution of a GPE control method. This - * function is called from an invocation of AcpiOsQueueForExecution - * (and therefore does NOT execute at interrupt level) so that - * the control method itself is not executed in the context of - * the SCI interrupt handler. - * - ******************************************************************************/ - -static void -AcpiEvAsynchExecuteGpeMethod ( - void *Context) -{ - UINT32 GpeNumber = (UINT32) Context; - ACPI_GPE_LEVEL_INFO GpeInfo; - - - FUNCTION_TRACE ("EvAsynchExecuteGpeMethod"); - - /* - * Take a snapshot of the GPE info for this level - */ - AcpiCmAcquireMutex (ACPI_MTX_EVENTS); - GpeInfo = AcpiGbl_GpeInfo [GpeNumber]; - AcpiCmReleaseMutex (ACPI_MTX_EVENTS); - - /* - * Method Handler (_Lxx, _Exx): - * ---------------------------- - * Evaluate the _Lxx/_Exx control method that corresponds to this GPE. - */ - if (GpeInfo.MethodHandle) - { - AcpiNsEvaluateByHandle (GpeInfo.MethodHandle, NULL, NULL); - } - - /* - * Level-Triggered? - * ---------------- - * If level-triggered we clear the GPE status bit after handling the event. - */ - if (GpeInfo.Type & ACPI_EVENT_LEVEL_TRIGGERED) - { - AcpiHwClearGpe (GpeNumber); - } - - /* - * Enable the GPE. - */ - AcpiHwEnableGpe (GpeNumber); - - return_VOID; -} - - -/****************************************************************************** - * - * FUNCTION: AcpiEvGpeDispatch - * - * PARAMETERS: GpeNumber - The 0-based Gpe number - * - * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED - * - * DESCRIPTION: Handle and dispatch a General Purpose AcpiEvent. - * Clears the status bit for the requested event. - * - * TBD: [Investigate] is this still valid or necessary: - * The Gpe handler differs from the fixed events in that it clears the enable - * bit rather than the status bit to clear the interrupt. This allows - * software outside of interrupt context to determine what caused the SCI and - * dispatch the correct AML. - * - ******************************************************************************/ - -UINT32 -AcpiEvGpeDispatch ( - UINT32 GpeNumber) -{ - ACPI_GPE_LEVEL_INFO GpeInfo; - - FUNCTION_TRACE ("EvGpeDispatch"); - - /*DEBUG_INCREMENT_EVENT_COUNT (EVENT_GENERAL);*/ - - /* - * Valid GPE number? - */ - if (AcpiGbl_GpeValid[GpeNumber] == ACPI_GPE_INVALID) - { - DEBUG_PRINT (ACPI_ERROR, ("Invalid GPE bit [%X].\n", GpeNumber)); - return_VALUE (INTERRUPT_NOT_HANDLED); - } - - /* - * Disable the GPE. - */ - AcpiHwDisableGpe (GpeNumber); - - GpeInfo = AcpiGbl_GpeInfo [GpeNumber]; - - /* - * Edge-Triggered? - * --------------- - * If edge-triggered, clear the GPE status bit now. Note that - * level-triggered events are cleared after the GPE is serviced. - */ - if (GpeInfo.Type & ACPI_EVENT_EDGE_TRIGGERED) - { - AcpiHwClearGpe (GpeNumber); - } - /* - * Function Handler (e.g. EC)? - */ - if (GpeInfo.Handler) - { - /* Invoke function handler (at interrupt level). */ - GpeInfo.Handler (GpeInfo.Context); - - /* Level-Triggered? */ - if (GpeInfo.Type & ACPI_EVENT_LEVEL_TRIGGERED) - { - AcpiHwClearGpe (GpeNumber); - } - - /* Enable GPE */ - AcpiHwEnableGpe (GpeNumber); - } - /* - * Method Handler (e.g. _Exx/_Lxx)? - */ - else if (GpeInfo.MethodHandle) - { - if (ACPI_FAILURE(AcpiOsQueueForExecution (OSD_PRIORITY_GPE, - AcpiEvAsynchExecuteGpeMethod, (void*)(NATIVE_UINT)GpeNumber))) - { - /* - * Shoudn't occur, but if it does report an error. Note that - * the GPE will remain disabled until the ACPI Core Subsystem - * is restarted, or the handler is removed/reinstalled. - */ - REPORT_ERROR (("AcpiEvGpeDispatch: Unable to queue handler for GPE bit [%X]\n", GpeNumber)); - } - } - /* - * No Handler? Report an error and leave the GPE disabled. - */ - else - { - REPORT_ERROR (("AcpiEvGpeDispatch: No installed handler for GPE [%X]\n", GpeNumber)); - - /* Level-Triggered? */ - if (GpeInfo.Type & ACPI_EVENT_LEVEL_TRIGGERED) - { - AcpiHwClearGpe (GpeNumber); - } - } - - return_VALUE (INTERRUPT_HANDLED); -} |