diff options
Diffstat (limited to 'sys/contrib/dev/acpica/evgpeblk.c')
| -rw-r--r-- | sys/contrib/dev/acpica/evgpeblk.c | 1372 |
1 files changed, 0 insertions, 1372 deletions
diff --git a/sys/contrib/dev/acpica/evgpeblk.c b/sys/contrib/dev/acpica/evgpeblk.c deleted file mode 100644 index 5e1bdb7..0000000 --- a/sys/contrib/dev/acpica/evgpeblk.c +++ /dev/null @@ -1,1372 +0,0 @@ -/****************************************************************************** - * - * Module Name: evgpeblk - GPE block creation and initialization. - * $Revision: 1.60 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, 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 <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acevents.h> -#include <contrib/dev/acpica/acnamesp.h> - -#define _COMPONENT ACPI_EVENTS - ACPI_MODULE_NAME ("evgpeblk") - -/* Local prototypes */ - -static ACPI_STATUS -AcpiEvSaveMethodInfo ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *ObjDesc, - void **ReturnValue); - -static ACPI_STATUS -AcpiEvMatchPrwAndGpe ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *Info, - void **ReturnValue); - -static ACPI_GPE_XRUPT_INFO * -AcpiEvGetGpeXruptBlock ( - UINT32 InterruptNumber); - -static ACPI_STATUS -AcpiEvDeleteGpeXrupt ( - ACPI_GPE_XRUPT_INFO *GpeXrupt); - -static ACPI_STATUS -AcpiEvInstallGpeBlock ( - ACPI_GPE_BLOCK_INFO *GpeBlock, - UINT32 InterruptNumber); - -static ACPI_STATUS -AcpiEvCreateGpeInfoBlocks ( - ACPI_GPE_BLOCK_INFO *GpeBlock); - - -/******************************************************************************* - * - * FUNCTION: AcpiEvValidGpeEvent - * - * PARAMETERS: GpeEventInfo - Info for this GPE - * - * RETURN: TRUE if the GpeEvent is valid - * - * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL. - * Should be called only when the GPE lists are semaphore locked - * and not subject to change. - * - ******************************************************************************/ - -BOOLEAN -AcpiEvValidGpeEvent ( - ACPI_GPE_EVENT_INFO *GpeEventInfo) -{ - ACPI_GPE_XRUPT_INFO *GpeXruptBlock; - ACPI_GPE_BLOCK_INFO *GpeBlock; - - - ACPI_FUNCTION_ENTRY (); - - - /* No need for spin lock since we are not changing any list elements */ - - /* Walk the GPE interrupt levels */ - - GpeXruptBlock = AcpiGbl_GpeXruptListHead; - while (GpeXruptBlock) - { - GpeBlock = GpeXruptBlock->GpeBlockListHead; - - /* Walk the GPE blocks on this interrupt level */ - - while (GpeBlock) - { - if ((&GpeBlock->EventInfo[0] <= GpeEventInfo) && - (&GpeBlock->EventInfo[((ACPI_SIZE) GpeBlock->RegisterCount) * 8] > GpeEventInfo)) - { - return (TRUE); - } - - GpeBlock = GpeBlock->Next; - } - - GpeXruptBlock = GpeXruptBlock->Next; - } - - return (FALSE); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvWalkGpeList - * - * PARAMETERS: GpeWalkCallback - Routine called for each GPE block - * - * RETURN: Status - * - * DESCRIPTION: Walk the GPE lists. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvWalkGpeList ( - ACPI_GPE_CALLBACK GpeWalkCallback) -{ - ACPI_GPE_BLOCK_INFO *GpeBlock; - ACPI_GPE_XRUPT_INFO *GpeXruptInfo; - ACPI_STATUS Status = AE_OK; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (EvWalkGpeList); - - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - - /* Walk the interrupt level descriptor list */ - - GpeXruptInfo = AcpiGbl_GpeXruptListHead; - while (GpeXruptInfo) - { - /* Walk all Gpe Blocks attached to this interrupt level */ - - GpeBlock = GpeXruptInfo->GpeBlockListHead; - while (GpeBlock) - { - /* One callback per GPE block */ - - Status = GpeWalkCallback (GpeXruptInfo, GpeBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - GpeBlock = GpeBlock->Next; - } - - GpeXruptInfo = GpeXruptInfo->Next; - } - -UnlockAndExit: - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvDeleteGpeHandlers - * - * PARAMETERS: GpeXruptInfo - GPE Interrupt info - * GpeBlock - Gpe Block info - * - * RETURN: Status - * - * DESCRIPTION: Delete all Handler objects found in the GPE data structs. - * Used only prior to termination. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvDeleteGpeHandlers ( - ACPI_GPE_XRUPT_INFO *GpeXruptInfo, - ACPI_GPE_BLOCK_INFO *GpeBlock) -{ - ACPI_GPE_EVENT_INFO *GpeEventInfo; - ACPI_NATIVE_UINT i; - ACPI_NATIVE_UINT j; - - - ACPI_FUNCTION_TRACE (EvDeleteGpeHandlers); - - - /* Examine each GPE Register within the block */ - - for (i = 0; i < GpeBlock->RegisterCount; i++) - { - /* Now look at the individual GPEs in this byte register */ - - for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) - { - GpeEventInfo = &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j]; - - if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_HANDLER) - { - ACPI_FREE (GpeEventInfo->Dispatch.Handler); - GpeEventInfo->Dispatch.Handler = NULL; - GpeEventInfo->Flags &= ~ACPI_GPE_DISPATCH_MASK; - } - } - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvSaveMethodInfo - * - * PARAMETERS: Callback from WalkNamespace - * - * RETURN: Status - * - * 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: - * "_Lxx" or "_Exx" - * Where: - * L - means that the GPE is level triggered - * E - means that the GPE is edge triggered - * xx - is the GPE number [in HEX] - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiEvSaveMethodInfo ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *ObjDesc, - void **ReturnValue) -{ - ACPI_GPE_BLOCK_INFO *GpeBlock = (void *) ObjDesc; - ACPI_GPE_EVENT_INFO *GpeEventInfo; - UINT32 GpeNumber; - char Name[ACPI_NAME_SIZE + 1]; - UINT8 Type; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (EvSaveMethodInfo); - - - /* - * _Lxx and _Exx GPE method support - * - * 1) Extract the name from the object and convert to a string - */ - ACPI_MOVE_32_TO_32 ( - Name, &((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Integer); - Name[ACPI_NAME_SIZE] = 0; - - /* - * 2) Edge/Level determination is based on the 2nd character - * of the method name - * - * NOTE: Default GPE type is RUNTIME. May be changed later to WAKE - * if a _PRW object is found that points to this GPE. - */ - switch (Name[1]) - { - case 'L': - Type = ACPI_GPE_LEVEL_TRIGGERED; - break; - - case 'E': - Type = ACPI_GPE_EDGE_TRIGGERED; - break; - - default: - /* Unknown method type, just ignore it! */ - - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, - "Ignoring unknown GPE method type: %s (name not of form _Lxx or _Exx)", - Name)); - return_ACPI_STATUS (AE_OK); - } - - /* Convert the last two characters of the name to the GPE Number */ - - GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16); - if (GpeNumber == ACPI_UINT32_MAX) - { - /* Conversion failed; invalid method, just ignore it */ - - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, - "Could not extract GPE number from name: %s (name is not of form _Lxx or _Exx)", - Name)); - return_ACPI_STATUS (AE_OK); - } - - /* Ensure that we have a valid GPE number for this GPE block */ - - if ((GpeNumber < GpeBlock->BlockBaseNumber) || - (GpeNumber >= (GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8)))) - { - /* - * Not valid for this GPE block, just ignore it - * However, it may be valid for a different GPE block, since GPE0 and GPE1 - * methods both appear under \_GPE. - */ - return_ACPI_STATUS (AE_OK); - } - - /* - * Now we can add this information to the GpeEventInfo block - * for use during dispatch of this GPE. Default type is RUNTIME, although - * this may change when the _PRW methods are executed later. - */ - GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber]; - - GpeEventInfo->Flags = (UINT8) - (Type | ACPI_GPE_DISPATCH_METHOD | ACPI_GPE_TYPE_RUNTIME); - - GpeEventInfo->Dispatch.MethodNode = (ACPI_NAMESPACE_NODE *) ObjHandle; - - /* Update enable mask, but don't enable the HW GPE as of yet */ - - Status = AcpiEvEnableGpe (GpeEventInfo, FALSE); - - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, - "Registered GPE method %s as GPE number 0x%.2X\n", - Name, GpeNumber)); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvMatchPrwAndGpe - * - * PARAMETERS: Callback from WalkNamespace - * - * RETURN: Status. NOTE: We ignore errors so that the _PRW walk is - * not aborted on a single _PRW failure. - * - * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a - * Device. Run the _PRW method. If present, extract the GPE - * number and mark the GPE as a WAKE GPE. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiEvMatchPrwAndGpe ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *Info, - void **ReturnValue) -{ - ACPI_GPE_WALK_INFO *GpeInfo = (void *) Info; - ACPI_NAMESPACE_NODE *GpeDevice; - ACPI_GPE_BLOCK_INFO *GpeBlock; - ACPI_NAMESPACE_NODE *TargetGpeDevice; - ACPI_GPE_EVENT_INFO *GpeEventInfo; - ACPI_OPERAND_OBJECT *PkgDesc; - ACPI_OPERAND_OBJECT *ObjDesc; - UINT32 GpeNumber; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (EvMatchPrwAndGpe); - - - /* Check for a _PRW method under this device */ - - Status = AcpiUtEvaluateObject (ObjHandle, METHOD_NAME__PRW, - ACPI_BTYPE_PACKAGE, &PkgDesc); - if (ACPI_FAILURE (Status)) - { - /* Ignore all errors from _PRW, we don't want to abort the subsystem */ - - return_ACPI_STATUS (AE_OK); - } - - /* The returned _PRW package must have at least two elements */ - - if (PkgDesc->Package.Count < 2) - { - goto Cleanup; - } - - /* Extract pointers from the input context */ - - GpeDevice = GpeInfo->GpeDevice; - GpeBlock = GpeInfo->GpeBlock; - - /* - * The _PRW object must return a package, we are only interested - * in the first element - */ - ObjDesc = PkgDesc->Package.Elements[0]; - - if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER) - { - /* Use FADT-defined GPE device (from definition of _PRW) */ - - TargetGpeDevice = AcpiGbl_FadtGpeDevice; - - /* Integer is the GPE number in the FADT described GPE blocks */ - - GpeNumber = (UINT32) ObjDesc->Integer.Value; - } - else if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_PACKAGE) - { - /* Package contains a GPE reference and GPE number within a GPE block */ - - if ((ObjDesc->Package.Count < 2) || - (ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[0]) != ACPI_TYPE_LOCAL_REFERENCE) || - (ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[1]) != ACPI_TYPE_INTEGER)) - { - goto Cleanup; - } - - /* Get GPE block reference and decode */ - - TargetGpeDevice = ObjDesc->Package.Elements[0]->Reference.Node; - GpeNumber = (UINT32) ObjDesc->Package.Elements[1]->Integer.Value; - } - else - { - /* Unknown type, just ignore it */ - - goto Cleanup; - } - - /* - * Is this GPE within this block? - * - * TRUE iff these conditions are true: - * 1) The GPE devices match. - * 2) The GPE index(number) is within the range of the Gpe Block - * associated with the GPE device. - */ - if ((GpeDevice == TargetGpeDevice) && - (GpeNumber >= GpeBlock->BlockBaseNumber) && - (GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8))) - { - GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber]; - - /* Mark GPE for WAKE-ONLY but WAKE_DISABLED */ - - GpeEventInfo->Flags &= ~(ACPI_GPE_WAKE_ENABLED | ACPI_GPE_RUN_ENABLED); - - Status = AcpiEvSetGpeType (GpeEventInfo, ACPI_GPE_TYPE_WAKE); - if (ACPI_FAILURE (Status)) - { - goto Cleanup; - } - Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_DISABLE); - } - -Cleanup: - AcpiUtRemoveReference (PkgDesc); - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvGetGpeXruptBlock - * - * PARAMETERS: InterruptNumber - Interrupt for a GPE block - * - * RETURN: A GPE interrupt block - * - * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt - * block per unique interrupt level used for GPEs. - * Should be called only when the GPE lists are semaphore locked - * and not subject to change. - * - ******************************************************************************/ - -static ACPI_GPE_XRUPT_INFO * -AcpiEvGetGpeXruptBlock ( - UINT32 InterruptNumber) -{ - ACPI_GPE_XRUPT_INFO *NextGpeXrupt; - ACPI_GPE_XRUPT_INFO *GpeXrupt; - ACPI_STATUS Status; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (EvGetGpeXruptBlock); - - - /* No need for lock since we are not changing any list elements here */ - - NextGpeXrupt = AcpiGbl_GpeXruptListHead; - while (NextGpeXrupt) - { - if (NextGpeXrupt->InterruptNumber == InterruptNumber) - { - return_PTR (NextGpeXrupt); - } - - NextGpeXrupt = NextGpeXrupt->Next; - } - - /* Not found, must allocate a new xrupt descriptor */ - - GpeXrupt = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_XRUPT_INFO)); - if (!GpeXrupt) - { - return_PTR (NULL); - } - - GpeXrupt->InterruptNumber = InterruptNumber; - - /* Install new interrupt descriptor with spin lock */ - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - if (AcpiGbl_GpeXruptListHead) - { - NextGpeXrupt = AcpiGbl_GpeXruptListHead; - while (NextGpeXrupt->Next) - { - NextGpeXrupt = NextGpeXrupt->Next; - } - - NextGpeXrupt->Next = GpeXrupt; - GpeXrupt->Previous = NextGpeXrupt; - } - else - { - AcpiGbl_GpeXruptListHead = GpeXrupt; - } - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - - /* Install new interrupt handler if not SCI_INT */ - - if (InterruptNumber != AcpiGbl_FADT.SciInterrupt) - { - Status = AcpiOsInstallInterruptHandler (InterruptNumber, - AcpiEvGpeXruptHandler, GpeXrupt); - if (ACPI_FAILURE (Status)) - { - ACPI_ERROR ((AE_INFO, - "Could not install GPE interrupt handler at level 0x%X", - InterruptNumber)); - return_PTR (NULL); - } - } - - return_PTR (GpeXrupt); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvDeleteGpeXrupt - * - * PARAMETERS: GpeXrupt - A GPE interrupt info block - * - * RETURN: Status - * - * DESCRIPTION: Remove and free a GpeXrupt block. Remove an associated - * interrupt handler if not the SCI interrupt. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiEvDeleteGpeXrupt ( - ACPI_GPE_XRUPT_INFO *GpeXrupt) -{ - ACPI_STATUS Status; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (EvDeleteGpeXrupt); - - - /* We never want to remove the SCI interrupt handler */ - - if (GpeXrupt->InterruptNumber == AcpiGbl_FADT.SciInterrupt) - { - GpeXrupt->GpeBlockListHead = NULL; - return_ACPI_STATUS (AE_OK); - } - - /* Disable this interrupt */ - - Status = AcpiOsRemoveInterruptHandler ( - GpeXrupt->InterruptNumber, AcpiEvGpeXruptHandler); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Unlink the interrupt block with lock */ - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - if (GpeXrupt->Previous) - { - GpeXrupt->Previous->Next = GpeXrupt->Next; - } - - if (GpeXrupt->Next) - { - GpeXrupt->Next->Previous = GpeXrupt->Previous; - } - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - - /* Free the block */ - - ACPI_FREE (GpeXrupt); - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvInstallGpeBlock - * - * PARAMETERS: GpeBlock - New GPE block - * InterruptNumber - Xrupt to be associated with this GPE block - * - * RETURN: Status - * - * DESCRIPTION: Install new GPE block with mutex support - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiEvInstallGpeBlock ( - ACPI_GPE_BLOCK_INFO *GpeBlock, - UINT32 InterruptNumber) -{ - ACPI_GPE_BLOCK_INFO *NextGpeBlock; - ACPI_GPE_XRUPT_INFO *GpeXruptBlock; - ACPI_STATUS Status; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (EvInstallGpeBlock); - - - Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - GpeXruptBlock = AcpiEvGetGpeXruptBlock (InterruptNumber); - if (!GpeXruptBlock) - { - Status = AE_NO_MEMORY; - goto UnlockAndExit; - } - - /* Install the new block at the end of the list with lock */ - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - if (GpeXruptBlock->GpeBlockListHead) - { - NextGpeBlock = GpeXruptBlock->GpeBlockListHead; - while (NextGpeBlock->Next) - { - NextGpeBlock = NextGpeBlock->Next; - } - - NextGpeBlock->Next = GpeBlock; - GpeBlock->Previous = NextGpeBlock; - } - else - { - GpeXruptBlock->GpeBlockListHead = GpeBlock; - } - - GpeBlock->XruptBlock = GpeXruptBlock; - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - - -UnlockAndExit: - Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvDeleteGpeBlock - * - * PARAMETERS: GpeBlock - Existing GPE block - * - * RETURN: Status - * - * DESCRIPTION: Remove a GPE block - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvDeleteGpeBlock ( - ACPI_GPE_BLOCK_INFO *GpeBlock) -{ - ACPI_STATUS Status; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (EvInstallGpeBlock); - - - Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Disable all GPEs in this block */ - - Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock); - - if (!GpeBlock->Previous && !GpeBlock->Next) - { - /* This is the last GpeBlock on this interrupt */ - - Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - } - else - { - /* Remove the block on this interrupt with lock */ - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - if (GpeBlock->Previous) - { - GpeBlock->Previous->Next = GpeBlock->Next; - } - else - { - GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next; - } - - if (GpeBlock->Next) - { - GpeBlock->Next->Previous = GpeBlock->Previous; - } - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - } - - /* Free the GpeBlock */ - - ACPI_FREE (GpeBlock->RegisterInfo); - ACPI_FREE (GpeBlock->EventInfo); - ACPI_FREE (GpeBlock); - -UnlockAndExit: - Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvCreateGpeInfoBlocks - * - * PARAMETERS: GpeBlock - New GPE block - * - * RETURN: Status - * - * DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiEvCreateGpeInfoBlocks ( - ACPI_GPE_BLOCK_INFO *GpeBlock) -{ - ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL; - ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL; - ACPI_GPE_EVENT_INFO *ThisEvent; - ACPI_GPE_REGISTER_INFO *ThisRegister; - ACPI_NATIVE_UINT i; - ACPI_NATIVE_UINT j; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (EvCreateGpeInfoBlocks); - - - /* Allocate the GPE register information block */ - - GpeRegisterInfo = ACPI_ALLOCATE_ZEROED ( - (ACPI_SIZE) GpeBlock->RegisterCount * - sizeof (ACPI_GPE_REGISTER_INFO)); - if (!GpeRegisterInfo) - { - ACPI_ERROR ((AE_INFO, - "Could not allocate the GpeRegisterInfo table")); - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* - * Allocate the GPE EventInfo block. There are eight distinct GPEs - * per register. Initialization to zeros is sufficient. - */ - GpeEventInfo = ACPI_ALLOCATE_ZEROED ( - ((ACPI_SIZE) GpeBlock->RegisterCount * - ACPI_GPE_REGISTER_WIDTH) * - sizeof (ACPI_GPE_EVENT_INFO)); - if (!GpeEventInfo) - { - ACPI_ERROR ((AE_INFO, - "Could not allocate the GpeEventInfo table")); - Status = AE_NO_MEMORY; - goto ErrorExit; - } - - /* Save the new Info arrays in the GPE block */ - - GpeBlock->RegisterInfo = GpeRegisterInfo; - GpeBlock->EventInfo = GpeEventInfo; - - /* - * Initialize the GPE Register and Event structures. A goal of these - * tables is to hide the fact that there are two separate GPE register sets - * in a given GPE hardware block, the status registers occupy the first half, - * and the enable registers occupy the second half. - */ - ThisRegister = GpeRegisterInfo; - ThisEvent = GpeEventInfo; - - for (i = 0; i < GpeBlock->RegisterCount; i++) - { - /* Init the RegisterInfo for this GPE register (8 GPEs) */ - - ThisRegister->BaseGpeNumber = (UINT8) (GpeBlock->BlockBaseNumber + - (i * ACPI_GPE_REGISTER_WIDTH)); - - ThisRegister->StatusAddress.Address = - GpeBlock->BlockAddress.Address + i; - - ThisRegister->EnableAddress.Address = - GpeBlock->BlockAddress.Address + i + GpeBlock->RegisterCount; - - ThisRegister->StatusAddress.SpaceId = GpeBlock->BlockAddress.SpaceId; - ThisRegister->EnableAddress.SpaceId = GpeBlock->BlockAddress.SpaceId; - ThisRegister->StatusAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH; - ThisRegister->EnableAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH; - ThisRegister->StatusAddress.BitOffset = ACPI_GPE_REGISTER_WIDTH; - ThisRegister->EnableAddress.BitOffset = ACPI_GPE_REGISTER_WIDTH; - - /* Init the EventInfo for each GPE within this register */ - - for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) - { - ThisEvent->GpeNumber = (UINT8) (ThisRegister->BaseGpeNumber + j); - ThisEvent->RegisterInfo = ThisRegister; - ThisEvent++; - } - - /* Disable all GPEs within this register */ - - Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0x00, - &ThisRegister->EnableAddress); - if (ACPI_FAILURE (Status)) - { - goto ErrorExit; - } - - /* Clear any pending GPE events within this register */ - - Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0xFF, - &ThisRegister->StatusAddress); - if (ACPI_FAILURE (Status)) - { - goto ErrorExit; - } - - ThisRegister++; - } - - return_ACPI_STATUS (AE_OK); - - -ErrorExit: - if (GpeRegisterInfo) - { - ACPI_FREE (GpeRegisterInfo); - } - if (GpeEventInfo) - { - ACPI_FREE (GpeEventInfo); - } - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvCreateGpeBlock - * - * PARAMETERS: GpeDevice - Handle to the parent GPE block - * GpeBlockAddress - Address and SpaceID - * RegisterCount - Number of GPE register pairs in the block - * GpeBlockBaseNumber - Starting GPE number for the block - * InterruptNumber - H/W interrupt for the block - * ReturnGpeBlock - Where the new block descriptor is returned - * - * RETURN: Status - * - * DESCRIPTION: Create and Install a block of GPE registers. All GPEs within - * the block are disabled at exit. - * Note: Assumes namespace is locked. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvCreateGpeBlock ( - ACPI_NAMESPACE_NODE *GpeDevice, - ACPI_GENERIC_ADDRESS *GpeBlockAddress, - UINT32 RegisterCount, - UINT8 GpeBlockBaseNumber, - UINT32 InterruptNumber, - ACPI_GPE_BLOCK_INFO **ReturnGpeBlock) -{ - ACPI_STATUS Status; - ACPI_GPE_BLOCK_INFO *GpeBlock; - - - ACPI_FUNCTION_TRACE (EvCreateGpeBlock); - - - if (!RegisterCount) - { - return_ACPI_STATUS (AE_OK); - } - - /* Allocate a new GPE block */ - - GpeBlock = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_BLOCK_INFO)); - if (!GpeBlock) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* Initialize the new GPE block */ - - GpeBlock->Node = GpeDevice; - GpeBlock->RegisterCount = RegisterCount; - GpeBlock->BlockBaseNumber = GpeBlockBaseNumber; - - ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress, - sizeof (ACPI_GENERIC_ADDRESS)); - - /* - * Create the RegisterInfo and EventInfo sub-structures - * Note: disables and clears all GPEs in the block - */ - Status = AcpiEvCreateGpeInfoBlocks (GpeBlock); - if (ACPI_FAILURE (Status)) - { - ACPI_FREE (GpeBlock); - return_ACPI_STATUS (Status); - } - - /* Install the new block in the global lists */ - - Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptNumber); - if (ACPI_FAILURE (Status)) - { - ACPI_FREE (GpeBlock); - return_ACPI_STATUS (Status); - } - - /* Find all GPE methods (_Lxx, _Exx) for this block */ - - Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice, - ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, - AcpiEvSaveMethodInfo, GpeBlock, NULL); - - /* Return the new block */ - - if (ReturnGpeBlock) - { - (*ReturnGpeBlock) = GpeBlock; - } - - ACPI_DEBUG_PRINT ((ACPI_DB_INIT, - "GPE %02X to %02X [%4.4s] %u regs on int 0x%X\n", - (UINT32) GpeBlock->BlockBaseNumber, - (UINT32) (GpeBlock->BlockBaseNumber + - ((GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) -1)), - GpeDevice->Name.Ascii, - GpeBlock->RegisterCount, - InterruptNumber)); - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvInitializeGpeBlock - * - * PARAMETERS: GpeDevice - Handle to the parent GPE block - * GpeBlock - Gpe Block info - * - * RETURN: Status - * - * DESCRIPTION: Initialize and enable a GPE block. First find and run any - * _PRT methods associated with the block, then enable the - * appropriate GPEs. - * Note: Assumes namespace is locked. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvInitializeGpeBlock ( - ACPI_NAMESPACE_NODE *GpeDevice, - ACPI_GPE_BLOCK_INFO *GpeBlock) -{ - ACPI_STATUS Status; - ACPI_GPE_EVENT_INFO *GpeEventInfo; - ACPI_GPE_WALK_INFO GpeInfo; - UINT32 WakeGpeCount; - UINT32 GpeEnabledCount; - ACPI_NATIVE_UINT i; - ACPI_NATIVE_UINT j; - - - ACPI_FUNCTION_TRACE (EvInitializeGpeBlock); - - - /* Ignore a null GPE block (e.g., if no GPE block 1 exists) */ - - if (!GpeBlock) - { - return_ACPI_STATUS (AE_OK); - } - - /* - * Runtime option: Should wake GPEs be enabled at runtime? The default - * is no, they should only be enabled just as the machine goes to sleep. - */ - if (AcpiGbl_LeaveWakeGpesDisabled) - { - /* - * Differentiate runtime vs wake GPEs, via the _PRW control methods. - * Each GPE that has one or more _PRWs that reference it is by - * definition a wake GPE and will not be enabled while the machine - * is running. - */ - GpeInfo.GpeBlock = GpeBlock; - GpeInfo.GpeDevice = GpeDevice; - - Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - AcpiEvMatchPrwAndGpe, &GpeInfo, NULL); - } - - /* - * Enable all GPEs in this block that have these attributes: - * 1) are "runtime" or "run/wake" GPEs, and - * 2) have a corresponding _Lxx or _Exx method - * - * Any other GPEs within this block must be enabled via the AcpiEnableGpe() - * external interface. - */ - WakeGpeCount = 0; - GpeEnabledCount = 0; - - for (i = 0; i < GpeBlock->RegisterCount; i++) - { - for (j = 0; j < 8; j++) - { - /* Get the info block for this particular GPE */ - - GpeEventInfo = &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j]; - - if (((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_METHOD) && - (GpeEventInfo->Flags & ACPI_GPE_TYPE_RUNTIME)) - { - GpeEnabledCount++; - } - - if (GpeEventInfo->Flags & ACPI_GPE_TYPE_WAKE) - { - WakeGpeCount++; - } - } - } - - ACPI_DEBUG_PRINT ((ACPI_DB_INIT, - "Found %u Wake, Enabled %u Runtime GPEs in this block\n", - WakeGpeCount, GpeEnabledCount)); - - /* Enable all valid runtime GPEs found above */ - - Status = AcpiHwEnableRuntimeGpeBlock (NULL, GpeBlock); - if (ACPI_FAILURE (Status)) - { - ACPI_ERROR ((AE_INFO, "Could not enable GPEs in GpeBlock %p", - GpeBlock)); - } - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvGpeInitialize - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Initialize the GPE data structures - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvGpeInitialize ( - void) -{ - UINT32 RegisterCount0 = 0; - UINT32 RegisterCount1 = 0; - UINT32 GpeNumberMax = 0; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (EvGpeInitialize); - - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* - * Initialize the GPE Block(s) defined in the FADT - * - * Why the GPE register block lengths are divided by 2: From the ACPI Spec, - * section "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." - */ - - /* - * Determine the maximum GPE number for this machine. - * - * Note: both GPE0 and GPE1 are optional, and either can exist without - * the other. - * - * If EITHER the register length OR the block address are zero, then that - * particular block is not supported. - */ - if (AcpiGbl_FADT.Gpe0BlockLength && - AcpiGbl_FADT.XGpe0Block.Address) - { - /* GPE block 0 exists (has both length and address > 0) */ - - RegisterCount0 = (UINT16) (AcpiGbl_FADT.Gpe0BlockLength / 2); - - GpeNumberMax = (RegisterCount0 * ACPI_GPE_REGISTER_WIDTH) - 1; - - /* Install GPE Block 0 */ - - Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice, - &AcpiGbl_FADT.XGpe0Block, RegisterCount0, 0, - AcpiGbl_FADT.SciInterrupt, &AcpiGbl_GpeFadtBlocks[0]); - - if (ACPI_FAILURE (Status)) - { - ACPI_EXCEPTION ((AE_INFO, Status, - "Could not create GPE Block 0")); - } - } - - if (AcpiGbl_FADT.Gpe1BlockLength && - AcpiGbl_FADT.XGpe1Block.Address) - { - /* GPE block 1 exists (has both length and address > 0) */ - - RegisterCount1 = (UINT16) (AcpiGbl_FADT.Gpe1BlockLength / 2); - - /* Check for GPE0/GPE1 overlap (if both banks exist) */ - - if ((RegisterCount0) && - (GpeNumberMax >= AcpiGbl_FADT.Gpe1Base)) - { - ACPI_ERROR ((AE_INFO, - "GPE0 block (GPE 0 to %d) overlaps the GPE1 block (GPE %d to %d) - Ignoring GPE1", - GpeNumberMax, AcpiGbl_FADT.Gpe1Base, - AcpiGbl_FADT.Gpe1Base + - ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1))); - - /* Ignore GPE1 block by setting the register count to zero */ - - RegisterCount1 = 0; - } - else - { - /* Install GPE Block 1 */ - - Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice, - &AcpiGbl_FADT.XGpe1Block, RegisterCount1, - AcpiGbl_FADT.Gpe1Base, - AcpiGbl_FADT.SciInterrupt, &AcpiGbl_GpeFadtBlocks[1]); - - if (ACPI_FAILURE (Status)) - { - ACPI_EXCEPTION ((AE_INFO, Status, - "Could not create GPE Block 1")); - } - - /* - * GPE0 and GPE1 do not have to be contiguous in the GPE number - * space. However, GPE0 always starts at GPE number zero. - */ - GpeNumberMax = AcpiGbl_FADT.Gpe1Base + - ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1); - } - } - - /* Exit if there are no GPE registers */ - - if ((RegisterCount0 + RegisterCount1) == 0) - { - /* GPEs are not required by ACPI, this is OK */ - - ACPI_DEBUG_PRINT ((ACPI_DB_INIT, - "There are no GPE blocks defined in the FADT\n")); - Status = AE_OK; - goto Cleanup; - } - - /* Check for Max GPE number out-of-range */ - - if (GpeNumberMax > ACPI_GPE_MAX) - { - ACPI_ERROR ((AE_INFO, - "Maximum GPE number from FADT is too large: 0x%X", - GpeNumberMax)); - Status = AE_BAD_VALUE; - goto Cleanup; - } - -Cleanup: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (AE_OK); -} - - |
