diff options
Diffstat (limited to 'events')
| -rw-r--r-- | events/evgpe.c | 2 | ||||
| -rw-r--r-- | events/evgpeblk.c | 774 | ||||
| -rw-r--r-- | events/evgpeinit.c | 763 | ||||
| -rw-r--r-- | events/evgpeutil.c | 452 |
4 files changed, 1232 insertions, 759 deletions
diff --git a/events/evgpe.c b/events/evgpe.c index d3569b188400..604f23d6c20f 100644 --- a/events/evgpe.c +++ b/events/evgpe.c @@ -370,7 +370,7 @@ AcpiEvGetGpeEventInfo ( ACPI_FUNCTION_ENTRY (); - /* A NULL GpeBlock means use the FADT-defined GPE block(s) */ + /* A NULL GpeDevice means use the FADT-defined GPE block(s) */ if (!GpeDevice) { diff --git a/events/evgpeblk.c b/events/evgpeblk.c index b109673ba8ee..721411703e85 100644 --- a/events/evgpeblk.c +++ b/events/evgpeblk.c @@ -124,28 +124,6 @@ /* Local prototypes */ static ACPI_STATUS -AcpiEvMatchGpeMethod ( - 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); @@ -157,581 +135,6 @@ AcpiEvCreateGpeInfoBlocks ( /******************************************************************************* * - * 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[GpeBlock->GpeCount] > GpeEventInfo)) - { - return (TRUE); - } - - GpeBlock = GpeBlock->Next; - } - - GpeXruptBlock = GpeXruptBlock->Next; - } - - return (FALSE); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvWalkGpeList - * - * PARAMETERS: GpeWalkCallback - Routine called for each GPE block - * Context - Value passed to callback - * - * RETURN: Status - * - * DESCRIPTION: Walk the GPE lists. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvWalkGpeList ( - ACPI_GPE_CALLBACK GpeWalkCallback, - void *Context) -{ - 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, Context); - if (ACPI_FAILURE (Status)) - { - if (Status == AE_CTRL_END) /* Callback abort */ - { - Status = AE_OK; - } - 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, - void *Context) -{ - ACPI_GPE_EVENT_INFO *GpeEventInfo; - UINT32 i; - UINT32 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[((ACPI_SIZE) 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: AcpiEvMatchGpeMethod - * - * 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 -AcpiEvMatchGpeMethod ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *ObjDesc, - void **ReturnValue) -{ - ACPI_NAMESPACE_NODE *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); - ACPI_GPE_BLOCK_INFO *GpeBlock = (void *) ObjDesc; - ACPI_GPE_EVENT_INFO *GpeEventInfo; - UINT32 GpeNumber; - char Name[ACPI_NAME_SIZE + 1]; - UINT8 Type; - - - ACPI_FUNCTION_TRACE (EvMatchGpeMethod); - - - /* - * Match and decode the _Lxx and _Exx GPE method names - * - * 1) Extract the method name and null terminate it - */ - ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer); - Name[ACPI_NAME_SIZE] = 0; - - /* 2) Name must begin with an underscore */ - - if (Name[0] != '_') - { - return_ACPI_STATUS (AE_OK); /* Ignore this method */ - } - - /* - * 3) Edge/Level determination is based on the 2nd character - * of the method name - * - * NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is - * found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set. - */ - 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); - } - - /* 4) The last two characters of the name are the hex 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 */ - - GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, GpeBlock); - if (!GpeEventInfo) - { - /* - * This GpeNumber is 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); - } - - /* - * Add the GPE information from above to the GpeEventInfo block for - * use during dispatch of this GPE. - */ - GpeEventInfo->Flags = (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD); - GpeEventInfo->Dispatch.MethodNode = MethodNode; - - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, - "Registered GPE method %s as GPE number 0x%.2X\n", - Name, GpeNumber)); - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * 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 CAN_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 walk */ - - 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 (ObjDesc->Common.Type == 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 (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE) - { - /* Package contains a GPE reference and GPE number within a GPE block */ - - if ((ObjDesc->Package.Count < 2) || - ((ObjDesc->Package.Elements[0])->Common.Type != - ACPI_TYPE_LOCAL_REFERENCE) || - ((ObjDesc->Package.Elements[1])->Common.Type != - 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 if and only if 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) - { - goto Cleanup; - } - - GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, GpeBlock); - if (GpeEventInfo) - { - /* This GPE can wake the system */ - - GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE; - } - -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; - } - else - { - /* No previous, update list head */ - - AcpiGbl_GpeXruptListHead = 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 @@ -1041,6 +444,7 @@ AcpiEvCreateGpeBlock ( { ACPI_STATUS Status; ACPI_GPE_BLOCK_INFO *GpeBlock; + ACPI_GPE_WALK_INFO WalkInfo; ACPI_FUNCTION_TRACE (EvCreateGpeBlock); @@ -1089,11 +493,16 @@ AcpiEvCreateGpeBlock ( return_ACPI_STATUS (Status); } - /* Find all GPE methods (_Lxx, _Exx) for this block */ + /* Find all GPE methods (_Lxx or_Exx) for this block */ + + WalkInfo.GpeBlock = GpeBlock; + WalkInfo.GpeDevice = GpeDevice; + WalkInfo.EnableThisGpe = FALSE; + WalkInfo.ExecuteByOwnerId = FALSE; Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice, ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, - AcpiEvMatchGpeMethod, NULL, GpeBlock, NULL); + AcpiEvMatchGpeMethod, NULL, &WalkInfo, NULL); /* Return the new block */ @@ -1139,7 +548,7 @@ AcpiEvInitializeGpeBlock ( { ACPI_STATUS Status; ACPI_GPE_EVENT_INFO *GpeEventInfo; - ACPI_GPE_WALK_INFO GpeInfo; + ACPI_GPE_WALK_INFO WalkInfo; UINT32 WakeGpeCount; UINT32 GpeEnabledCount; UINT32 GpeIndex; @@ -1170,12 +579,13 @@ AcpiEvInitializeGpeBlock ( * definition a wake GPE and will not be enabled while the machine * is running. */ - GpeInfo.GpeBlock = GpeBlock; - GpeInfo.GpeDevice = GpeDevice; + WalkInfo.GpeBlock = GpeBlock; + WalkInfo.GpeDevice = GpeDevice; + WalkInfo.ExecuteByOwnerId = FALSE; Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - AcpiEvMatchPrwAndGpe, NULL, &GpeInfo, NULL); + AcpiEvMatchPrwAndGpe, NULL, &WalkInfo, NULL); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "While executing _PRW methods")); @@ -1238,165 +648,13 @@ AcpiEvInitializeGpeBlock ( } } - ACPI_DEBUG_PRINT ((ACPI_DB_INIT, - "Found %u Wake, Enabled %u Runtime GPEs in this block\n", - WakeGpeCount, GpeEnabledCount)); - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * 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 %u) overlaps the GPE1 block " - "(GPE %u to %u) - 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) + if (GpeEnabledCount || WakeGpeCount) { - /* 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; + "Enabled %u Runtime GPEs, added %u Wake GPEs in this block\n", + GpeEnabledCount, WakeGpeCount)); } - /* 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); } - diff --git a/events/evgpeinit.c b/events/evgpeinit.c new file mode 100644 index 000000000000..1720250cc85f --- /dev/null +++ b/events/evgpeinit.c @@ -0,0 +1,763 @@ +/****************************************************************************** + * + * Module Name: evgpeinit - System GPE initialization and update + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2010, 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 "accommon.h" +#include "acevents.h" +#include "acnamesp.h" +#include "acinterp.h" + +#define _COMPONENT ACPI_EVENTS + ACPI_MODULE_NAME ("evgpeinit") + + +/******************************************************************************* + * + * FUNCTION: AcpiEvGpeInitialize + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Initialize the GPE data structures and the FADT GPE 0/1 blocks + * + ******************************************************************************/ + +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 %u) overlaps the GPE1 block " + "(GPE %u to %u) - 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); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiEvUpdateGpes + * + * PARAMETERS: TableOwnerId - ID of the newly-loaded ACPI table + * + * RETURN: None + * + * DESCRIPTION: Check for new GPE methods (_Lxx/_Exx) made available as a + * result of a Load() or LoadTable() operation. If new GPE + * methods have been installed, register the new methods and + * enable and runtime GPEs that are associated with them. Also, + * run any newly loaded _PRW methods in order to discover any + * new CAN_WAKE GPEs. + * + ******************************************************************************/ + +void +AcpiEvUpdateGpes ( + ACPI_OWNER_ID TableOwnerId) +{ + ACPI_GPE_XRUPT_INFO *GpeXruptInfo; + ACPI_GPE_BLOCK_INFO *GpeBlock; + ACPI_GPE_WALK_INFO WalkInfo; + ACPI_STATUS Status = AE_OK; + UINT32 NewWakeGpeCount = 0; + + + /* We will examine only _PRW/_Lxx/_Exx methods owned by this table */ + + WalkInfo.OwnerId = TableOwnerId; + WalkInfo.ExecuteByOwnerId = TRUE; + WalkInfo.Count = 0; + + if (AcpiGbl_LeaveWakeGpesDisabled) + { + /* + * 1) Run any newly-loaded _PRW methods to find any GPEs that + * can now be marked as CAN_WAKE GPEs. Note: We must run the + * _PRW methods before we process the _Lxx/_Exx methods because + * we will enable all runtime GPEs associated with the new + * _Lxx/_Exx methods at the time we process those methods. + * + * Unlock interpreter so that we can run the _PRW methods. + */ + WalkInfo.GpeBlock = NULL; + WalkInfo.GpeDevice = NULL; + + AcpiExExitInterpreter (); + + Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, + ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, + AcpiEvMatchPrwAndGpe, NULL, &WalkInfo, NULL); + if (ACPI_FAILURE (Status)) + { + ACPI_EXCEPTION ((AE_INFO, Status, + "While executing _PRW methods")); + } + + AcpiExEnterInterpreter (); + NewWakeGpeCount = WalkInfo.Count; + } + + /* + * 2) Find any _Lxx/_Exx GPE methods that have just been loaded. + * + * Any GPEs that correspond to new _Lxx/_Exx methods and are not + * marked as CAN_WAKE are immediately enabled. + * + * Examine the namespace underneath each GpeDevice within the + * GpeBlock lists. + */ + Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); + if (ACPI_FAILURE (Status)) + { + return; + } + + WalkInfo.Count = 0; + WalkInfo.EnableThisGpe = TRUE; + + /* 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) + { + WalkInfo.GpeBlock = GpeBlock; + WalkInfo.GpeDevice = GpeBlock->Node; + + Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, + WalkInfo.GpeDevice, ACPI_UINT32_MAX, + ACPI_NS_WALK_NO_UNLOCK, AcpiEvMatchGpeMethod, + NULL, &WalkInfo, NULL); + if (ACPI_FAILURE (Status)) + { + ACPI_EXCEPTION ((AE_INFO, Status, + "While decoding _Lxx/_Exx methods")); + } + + GpeBlock = GpeBlock->Next; + } + + GpeXruptInfo = GpeXruptInfo->Next; + } + + if (WalkInfo.Count || NewWakeGpeCount) + { + ACPI_INFO ((AE_INFO, + "Enabled %u new runtime GPEs, added %u new wakeup GPEs", + WalkInfo.Count, NewWakeGpeCount)); + } + + (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); + return; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiEvMatchGpeMethod + * + * 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. Allows a + * per-OwnerId evaluation if ExecuteByOwnerId is TRUE in the + * WalkInfo parameter block. + * + * 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] + * + * If WalkInfo->ExecuteByOwnerId is TRUE, we only execute examine GPE methods + * with that owner. + * If WalkInfo->EnableThisGpe is TRUE, the GPE that is referred to by a GPE + * method is immediately enabled (Used for Load/LoadTable operators) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiEvMatchGpeMethod ( + ACPI_HANDLE ObjHandle, + UINT32 Level, + void *Context, + void **ReturnValue) +{ + ACPI_NAMESPACE_NODE *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); + ACPI_GPE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context); + ACPI_GPE_EVENT_INFO *GpeEventInfo; + ACPI_NAMESPACE_NODE *GpeDevice; + ACPI_STATUS Status; + UINT32 GpeNumber; + char Name[ACPI_NAME_SIZE + 1]; + UINT8 Type; + + + ACPI_FUNCTION_TRACE (EvMatchGpeMethod); + + + /* Check if requested OwnerId matches this OwnerId */ + + if ((WalkInfo->ExecuteByOwnerId) && + (MethodNode->OwnerId != WalkInfo->OwnerId)) + { + return_ACPI_STATUS (AE_OK); + } + + /* + * Match and decode the _Lxx and _Exx GPE method names + * + * 1) Extract the method name and null terminate it + */ + ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer); + Name[ACPI_NAME_SIZE] = 0; + + /* 2) Name must begin with an underscore */ + + if (Name[0] != '_') + { + return_ACPI_STATUS (AE_OK); /* Ignore this method */ + } + + /* + * 3) Edge/Level determination is based on the 2nd character + * of the method name + * + * NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is + * found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set. + */ + 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); + } + + /* 4) The last two characters of the name are the hex 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 */ + + GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, WalkInfo->GpeBlock); + if (!GpeEventInfo) + { + /* + * This GpeNumber is 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); + } + + if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == + ACPI_GPE_DISPATCH_HANDLER) + { + /* If there is already a handler, ignore this GPE method */ + + return_ACPI_STATUS (AE_OK); + } + + if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == + ACPI_GPE_DISPATCH_METHOD) + { + /* + * If there is already a method, ignore this method. But check + * for a type mismatch (if both the _Lxx AND _Exx exist) + */ + if (Type != (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK)) + { + ACPI_ERROR ((AE_INFO, + "For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods", + GpeNumber, GpeNumber, GpeNumber)); + } + return_ACPI_STATUS (AE_OK); + } + + /* + * Add the GPE information from above to the GpeEventInfo block for + * use during dispatch of this GPE. + */ + GpeEventInfo->Flags |= (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD); + GpeEventInfo->Dispatch.MethodNode = MethodNode; + + /* + * Enable this GPE if requested. This only happens when during the + * execution of a Load or LoadTable operator. We have found a new + * GPE method and want to immediately enable the GPE if it is a + * runtime GPE. + */ + if (WalkInfo->EnableThisGpe) + { + /* Ignore GPEs that can wake the system */ + + if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE) || + !AcpiGbl_LeaveWakeGpesDisabled) + { + WalkInfo->Count++; + GpeDevice = WalkInfo->GpeDevice; + + if (GpeDevice == AcpiGbl_FadtGpeDevice) + { + GpeDevice = NULL; + } + + Status = AcpiEnableGpe (GpeDevice, GpeNumber, + ACPI_GPE_TYPE_RUNTIME); + if (ACPI_FAILURE (Status)) + { + ACPI_EXCEPTION ((AE_INFO, Status, + "Could not enable GPE 0x%02X", GpeNumber)); + } + } + } + + ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, + "Registered GPE method %s as GPE number 0x%.2X\n", + Name, GpeNumber)); + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * 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 CAN_WAKE GPE. Allows a + * per-OwnerId execution if ExecuteByOwnerId is TRUE in the + * WalkInfo parameter block. + * + * If WalkInfo->ExecuteByOwnerId is TRUE, we only execute _PRWs with that + * owner. + * If WalkInfo->GpeDevice is NULL, we execute every _PRW found. Otherwise, + * we only execute _PRWs that refer to the input GpeDevice. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiEvMatchPrwAndGpe ( + ACPI_HANDLE ObjHandle, + UINT32 Level, + void *Context, + void **ReturnValue) +{ + ACPI_GPE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context); + ACPI_NAMESPACE_NODE *GpeDevice; + ACPI_GPE_BLOCK_INFO *GpeBlock; + ACPI_NAMESPACE_NODE *TargetGpeDevice; + ACPI_NAMESPACE_NODE *PrwNode; + 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 = AcpiNsGetNode (ObjHandle, METHOD_NAME__PRW, + ACPI_NS_NO_UPSEARCH, &PrwNode); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (AE_OK); + } + + /* Check if requested OwnerId matches this OwnerId */ + + if ((WalkInfo->ExecuteByOwnerId) && + (PrwNode->OwnerId != WalkInfo->OwnerId)) + { + return_ACPI_STATUS (AE_OK); + } + + /* Execute the _PRW */ + + Status = AcpiUtEvaluateObject (PrwNode, NULL, + ACPI_BTYPE_PACKAGE, &PkgDesc); + if (ACPI_FAILURE (Status)) + { + 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 = WalkInfo->GpeDevice; + GpeBlock = WalkInfo->GpeBlock; + + /* + * The _PRW object must return a package, we are only interested + * in the first element + */ + ObjDesc = PkgDesc->Package.Elements[0]; + + if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) + { + /* Use FADT-defined GPE device (from definition of _PRW) */ + + TargetGpeDevice = NULL; + if (GpeDevice) + { + TargetGpeDevice = AcpiGbl_FadtGpeDevice; + } + + /* Integer is the GPE number in the FADT described GPE blocks */ + + GpeNumber = (UINT32) ObjDesc->Integer.Value; + } + else if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE) + { + /* Package contains a GPE reference and GPE number within a GPE block */ + + if ((ObjDesc->Package.Count < 2) || + ((ObjDesc->Package.Elements[0])->Common.Type != + ACPI_TYPE_LOCAL_REFERENCE) || + ((ObjDesc->Package.Elements[1])->Common.Type != + 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; + } + + /* Get the GpeEventInfo for this GPE */ + + if (GpeDevice) + { + /* + * Is this GPE within this block? + * + * TRUE if and only if 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) + { + goto Cleanup; + } + + GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, GpeBlock); + } + else + { + /* GpeDevice is NULL, just match the TargetDevice and GpeNumber */ + + GpeEventInfo = AcpiEvGetGpeEventInfo (TargetGpeDevice, GpeNumber); + } + + if (GpeEventInfo) + { + if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE)) + { + /* This GPE can wake the system */ + + GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE; + WalkInfo->Count++; + } + } + +Cleanup: + AcpiUtRemoveReference (PkgDesc); + return_ACPI_STATUS (AE_OK); +} + diff --git a/events/evgpeutil.c b/events/evgpeutil.c new file mode 100644 index 000000000000..2ac0ad448090 --- /dev/null +++ b/events/evgpeutil.c @@ -0,0 +1,452 @@ +/****************************************************************************** + * + * Module Name: evgpeutil - GPE utilities + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2010, 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 "accommon.h" +#include "acevents.h" + +#define _COMPONENT ACPI_EVENTS + ACPI_MODULE_NAME ("evgpeutil") + + +/******************************************************************************* + * + * FUNCTION: AcpiEvWalkGpeList + * + * PARAMETERS: GpeWalkCallback - Routine called for each GPE block + * Context - Value passed to callback + * + * RETURN: Status + * + * DESCRIPTION: Walk the GPE lists. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiEvWalkGpeList ( + ACPI_GPE_CALLBACK GpeWalkCallback, + void *Context) +{ + 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, Context); + if (ACPI_FAILURE (Status)) + { + if (Status == AE_CTRL_END) /* Callback abort */ + { + Status = AE_OK; + } + goto UnlockAndExit; + } + + GpeBlock = GpeBlock->Next; + } + + GpeXruptInfo = GpeXruptInfo->Next; + } + +UnlockAndExit: + AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * 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[GpeBlock->GpeCount] > GpeEventInfo)) + { + return (TRUE); + } + + GpeBlock = GpeBlock->Next; + } + + GpeXruptBlock = GpeXruptBlock->Next; + } + + return (FALSE); +} + + +/******************************************************************************* + * + * 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. + * + ******************************************************************************/ + +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. + * + ******************************************************************************/ + +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; + } + else + { + /* No previous, update list head */ + + AcpiGbl_GpeXruptListHead = 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: 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, + void *Context) +{ + ACPI_GPE_EVENT_INFO *GpeEventInfo; + UINT32 i; + UINT32 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[((ACPI_SIZE) 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); +} + |