ACPI_STATUS AcpiDbInitialize ( void) { ACPI_STATUS Status; /* Init globals */ AcpiGbl_DbBuffer = NULL; AcpiGbl_DbFilename = NULL; AcpiGbl_DbOutputToFile = FALSE; AcpiGbl_DbDebugLevel = ACPI_LV_VERBOSITY2; AcpiGbl_DbConsoleDebugLevel = ACPI_NORMAL_DEFAULT | ACPI_LV_TABLES; AcpiGbl_DbOutputFlags = ACPI_DB_CONSOLE_OUTPUT; AcpiGbl_DbOpt_tables = FALSE; AcpiGbl_DbOpt_disasm = FALSE; AcpiGbl_DbOpt_stats = FALSE; AcpiGbl_DbOpt_verbose = TRUE; AcpiGbl_DbOpt_ini_methods = TRUE; AcpiGbl_DbBuffer = AcpiOsAllocate (ACPI_DEBUG_BUFFER_SIZE); if (!AcpiGbl_DbBuffer) { return (AE_NO_MEMORY); } ACPI_MEMSET (AcpiGbl_DbBuffer, 0, ACPI_DEBUG_BUFFER_SIZE); /* Initial scope is the root */ AcpiGbl_DbScopeBuf [0] = '\\'; AcpiGbl_DbScopeBuf [1] = 0; AcpiGbl_DbScopeNode = AcpiGbl_RootNode; /* * If configured for multi-thread support, the debug executor runs in * a separate thread so that the front end can be in another address * space, environment, or even another machine. */ if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED) { /* These were created with one unit, grab it */ Status = AcpiUtAcquireMutex (ACPI_MTX_DEBUG_CMD_COMPLETE); if (ACPI_FAILURE (Status)) { AcpiOsPrintf ("Could not get debugger mutex\n"); return (Status); } Status = AcpiUtAcquireMutex (ACPI_MTX_DEBUG_CMD_READY); if (ACPI_FAILURE (Status)) { AcpiOsPrintf ("Could not get debugger mutex\n"); return (Status); } /* Create the debug execution thread to execute commands */ Status = AcpiOsExecute (OSL_DEBUGGER_THREAD, AcpiDbExecuteThread, NULL); if (ACPI_FAILURE (Status)) { AcpiOsPrintf ("Could not start debugger thread\n"); return (Status); } } if (!AcpiGbl_DbOpt_verbose) { AcpiGbl_DbOpt_disasm = TRUE; AcpiGbl_DbOpt_stats = FALSE; } return (AE_OK); }
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, NULL); 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); } AcpiCurrentGpeCount -= GpeBlock->GpeCount; /* Free the GpeBlock */ ACPI_FREE (GpeBlock->RegisterInfo); ACPI_FREE (GpeBlock->EventInfo); ACPI_FREE (GpeBlock); UnlockAndExit: Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiNsGetNode ( ACPI_NAMESPACE_NODE *PrefixNode, const char *Pathname, UINT32 Flags, ACPI_NAMESPACE_NODE **ReturnNode) { ACPI_GENERIC_STATE ScopeInfo; ACPI_STATUS Status; char *InternalPath; ACPI_FUNCTION_TRACE_PTR (NsGetNode, ACPI_CAST_PTR (char, Pathname)); if (!Pathname) { *ReturnNode = PrefixNode; if (!PrefixNode) { *ReturnNode = AcpiGbl_RootNode; } return_ACPI_STATUS (AE_OK); } /* Convert path to internal representation */ Status = AcpiNsInternalizeName (Pathname, &InternalPath); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Must lock namespace during lookup */ Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Setup lookup scope (search starting point) */ ScopeInfo.Scope.Node = PrefixNode; /* Lookup the name in the namespace */ Status = AcpiNsLookup (&ScopeInfo, InternalPath, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, (Flags | ACPI_NS_DONT_OPEN_SCOPE), NULL, ReturnNode); if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s, %s\n", Pathname, AcpiFormatException (Status))); } (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); Cleanup: ACPI_FREE (InternalPath); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEvInstallRegionHandlers ( void) { ACPI_STATUS Status; UINT32 i; ACPI_FUNCTION_TRACE (EvInstallRegionHandlers); Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * All address spaces (PCI Config, EC, SMBus) are scope dependent and * registration must occur for a specific device. * * In the case of the system memory and IO address spaces there is * currently no device associated with the address space. For these we * use the root. * * We install the default PCI config space handler at the root so that * this space is immediately available even though the we have not * enumerated all the PCI Root Buses yet. This is to conform to the ACPI * specification which states that the PCI config space must be always * available -- even though we are nowhere near ready to find the PCI root * buses at this point. * * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler * has already been installed (via AcpiInstallAddressSpaceHandler). * Similar for AE_SAME_HANDLER. */ for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) { Status = AcpiEvInstallSpaceHandler (AcpiGbl_RootNode, AcpiGbl_DefaultAddressSpaces[i], ACPI_DEFAULT_HANDLER, NULL, NULL); switch (Status) { case AE_OK: case AE_SAME_HANDLER: case AE_ALREADY_EXISTS: /* These exceptions are all OK */ Status = AE_OK; break; default: goto UnlockAndExit; } } UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
static ACPI_STATUS AcpiUtTrackAllocation ( ACPI_DEBUG_MEM_BLOCK *Allocation, ACPI_SIZE Size, UINT8 AllocType, UINT32 Component, const char *Module, UINT32 Line) { ACPI_MEMORY_LIST *MemList; ACPI_DEBUG_MEM_BLOCK *Element; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE_PTR (UtTrackAllocation, Allocation); MemList = AcpiGbl_GlobalList; Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Search list for this address to make sure it is not already on the list. * This will catch several kinds of problems. */ Element = AcpiUtFindAllocation (Allocation); if (Element) { ACPI_ERROR ((AE_INFO, "UtTrackAllocation: Allocation already present in list! (%p)", Allocation)); ACPI_ERROR ((AE_INFO, "Element %p Address %p", Element, Allocation)); goto UnlockAndExit; } /* Fill in the instance data. */ Allocation->Size = (UINT32) Size; Allocation->AllocType = AllocType; Allocation->Component = Component; Allocation->Line = Line; ACPI_STRNCPY (Allocation->Module, Module, ACPI_MAX_MODULE_NAME); Allocation->Module[ACPI_MAX_MODULE_NAME-1] = 0; /* Insert at list head */ if (MemList->ListHead) { ((ACPI_DEBUG_MEM_BLOCK *)(MemList->ListHead))->Previous = Allocation; } Allocation->Next = MemList->ListHead; Allocation->Previous = NULL; MemList->ListHead = Allocation; UnlockAndExit: Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiRemoveSciHandler ( ACPI_SCI_HANDLER Address) { ACPI_SCI_HANDLER_INFO *PrevSciHandler; ACPI_SCI_HANDLER_INFO *NextSciHandler; ACPI_CPU_FLAGS Flags; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiRemoveSciHandler); if (!Address) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Remove the SCI handler with lock */ Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); PrevSciHandler = NULL; NextSciHandler = AcpiGbl_SciHandlerList; while (NextSciHandler) { if (NextSciHandler->Address == Address) { /* Unlink and free the SCI handler info block */ if (PrevSciHandler) { PrevSciHandler->Next = NextSciHandler->Next; } else { AcpiGbl_SciHandlerList = NextSciHandler->Next; } AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); ACPI_FREE (NextSciHandler); goto UnlockAndExit; } PrevSciHandler = NextSciHandler; NextSciHandler = NextSciHandler->Next; } AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); Status = AE_NOT_EXIST; UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); }
static ACPI_STATUS AcpiEvInstallGpeHandler ( ACPI_HANDLE GpeDevice, UINT32 GpeNumber, UINT32 Type, BOOLEAN IsRawHandler, ACPI_GPE_HANDLER Address, void *Context) { ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_GPE_HANDLER_INFO *Handler; ACPI_STATUS Status; ACPI_CPU_FLAGS Flags; ACPI_FUNCTION_TRACE (EvInstallGpeHandler); /* Parameter validation */ if ((!Address) || (Type & ~ACPI_GPE_XRUPT_TYPE_MASK)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Allocate and init handler object (before lock) */ Handler = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_HANDLER_INFO)); if (!Handler) { Status = AE_NO_MEMORY; goto UnlockAndExit; } Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); if (!GpeEventInfo) { Status = AE_BAD_PARAMETER; goto FreeAndExit; } /* Make sure that there isn't a handler there already */ if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_HANDLER) || (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_RAW_HANDLER)) { Status = AE_ALREADY_EXISTS; goto FreeAndExit; } Handler->Address = Address; Handler->Context = Context; Handler->MethodNode = GpeEventInfo->Dispatch.MethodNode; Handler->OriginalFlags = (UINT8) (GpeEventInfo->Flags & (ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK)); /* * If the GPE is associated with a method, it may have been enabled * automatically during initialization, in which case it has to be * disabled now to avoid spurious execution of the handler. */ if (((ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) == ACPI_GPE_DISPATCH_METHOD) || (ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) == ACPI_GPE_DISPATCH_NOTIFY)) && GpeEventInfo->RuntimeCount) { Handler->OriginallyEnabled = TRUE; (void) AcpiEvRemoveGpeReference (GpeEventInfo); /* Sanity check of original type against new type */ if (Type != (UINT32) (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK)) { ACPI_WARNING ((AE_INFO, "GPE type mismatch (level/edge)")); } } /* Install the handler */ GpeEventInfo->Dispatch.Handler = Handler; /* Setup up dispatch flags to indicate handler (vs. method/notify) */ GpeEventInfo->Flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); GpeEventInfo->Flags |= (UINT8) (Type | (IsRawHandler ? ACPI_GPE_DISPATCH_RAW_HANDLER : ACPI_GPE_DISPATCH_HANDLER)); AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); FreeAndExit: AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); ACPI_FREE (Handler); goto UnlockAndExit; }
ACPI_STATUS AcpiEvInitializeRegion ( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_ADR_SPACE_TYPE SpaceId; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked); if (!RegionObj) { return_ACPI_STATUS (AE_BAD_PARAMETER); } if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED) { return_ACPI_STATUS (AE_OK); } RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED; Node = RegionObj->Region.Node->Parent; SpaceId = RegionObj->Region.SpaceId; /* * The following loop depends upon the root Node having no parent * ie: AcpiGbl_RootNode->Parent being set to NULL */ while (Node) { /* Check to see if a handler exists */ HandlerObj = NULL; ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* Can only be a handler if the object exists */ switch (Node->Type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: HandlerObj = ObjDesc->CommonNotify.Handler; break; case ACPI_TYPE_METHOD: /* * If we are executing module level code, the original * Node's object was replaced by this Method object and we * saved the handler in the method object. * * See AcpiNsExecModuleCode */ if (ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL) { HandlerObj = ObjDesc->Method.Dispatch.Handler; } break; default: /* Ignore other objects */ break; } HandlerObj = AcpiEvFindRegionHandler (SpaceId, HandlerObj); if (HandlerObj) { /* Found correct handler */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler %p for region %p in obj %p\n", HandlerObj, RegionObj, ObjDesc)); Status = AcpiEvAttachRegion (HandlerObj, RegionObj, AcpiNsLocked); /* * Tell all users that this region is usable by * running the _REG method */ if (AcpiNsLocked) { Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_CONNECT); if (AcpiNsLocked) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } return_ACPI_STATUS (AE_OK); } } /* This node does not have the handler we need; Pop up one level */ Node = Node->Parent; } /* If we get here, there is no handler for this region */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "No handler for RegionType %s(%X) (RegionObj %p)\n", AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj)); return_ACPI_STATUS (AE_NOT_EXIST); }
static ACPI_STATUS AcpiTbLoadNamespace ( void) { ACPI_STATUS Status; UINT32 i; ACPI_TABLE_HEADER *NewDsdt; ACPI_FUNCTION_TRACE (TbLoadNamespace); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* * Load the namespace. The DSDT is required, but any SSDT and * PSDT tables are optional. Verify the DSDT. */ if (!AcpiGbl_RootTableList.CurrentTableCount || !ACPI_COMPARE_NAME ( &(AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Signature), ACPI_SIG_DSDT) || ACPI_FAILURE (AcpiTbValidateTable ( &AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT]))) { Status = AE_NO_ACPI_TABLES; goto UnlockAndExit; } /* * Save the DSDT pointer for simple access. This is the mapped memory * address. We must take care here because the address of the .Tables * array can change dynamically as tables are loaded at run-time. Note: * .Pointer field is not validated until after call to AcpiTbValidateTable. */ AcpiGbl_DSDT = AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Pointer; /* * Optionally copy the entire DSDT to local memory (instead of simply * mapping it.) There are some BIOSs that corrupt or replace the original * DSDT, creating the need for this option. Default is FALSE, do not copy * the DSDT. */ if (AcpiGbl_CopyDsdtLocally) { NewDsdt = AcpiTbCopyDsdt (ACPI_TABLE_INDEX_DSDT); if (NewDsdt) { AcpiGbl_DSDT = NewDsdt; } } /* * Save the original DSDT header for detection of table corruption * and/or replacement of the DSDT from outside the OS. */ ACPI_MEMCPY (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT, sizeof (ACPI_TABLE_HEADER)); (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); /* Load and parse tables */ Status = AcpiNsLoadTable (ACPI_TABLE_INDEX_DSDT, AcpiGbl_RootNode); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */ (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { if ((!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_SSDT) && !ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_PSDT)) || ACPI_FAILURE (AcpiTbValidateTable ( &AcpiGbl_RootTableList.Tables[i]))) { continue; } /* Ignore errors while loading tables, get as many as possible */ (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); (void) AcpiNsLoadTable (i, AcpiGbl_RootNode); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); } ACPI_INFO ((AE_INFO, "All ACPI Tables successfully acquired")); UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiNsRootInitialize ( void) { ACPI_STATUS Status; const ACPI_PREDEFINED_NAMES *InitVal = NULL; ACPI_NAMESPACE_NODE *NewNode; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STRING Val = NULL; ACPI_FUNCTION_TRACE (NsRootInitialize); Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * The global root ptr is initially NULL, so a non-NULL value indicates * that AcpiNsRootInitialize() has already been called; just return. */ if (AcpiGbl_RootNode) { Status = AE_OK; goto UnlockAndExit; } /* * Tell the rest of the subsystem that the root is initialized * (This is OK because the namespace is locked) */ AcpiGbl_RootNode = &AcpiGbl_RootNodeStruct; /* Enter the pre-defined names in the name table */ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Entering predefined entries into namespace\n")); for (InitVal = AcpiGbl_PreDefinedNames; InitVal->Name; InitVal++) { /* _OSI is optional for now, will be permanent later */ if (!strcmp (InitVal->Name, "_OSI") && !AcpiGbl_CreateOsiMethod) { continue; } Status = AcpiNsLookup (NULL, __UNCONST(InitVal->Name), InitVal->Type, ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH, NULL, &NewNode); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Could not create predefined name %s", InitVal->Name)); continue; } /* * Name entered successfully. If entry in PreDefinedNames[] specifies * an initial value, create the initial value. */ if (InitVal->Val) { Status = AcpiOsPredefinedOverride (InitVal, &Val); if (ACPI_FAILURE (Status)) { ACPI_ERROR ((AE_INFO, "Could not override predefined %s", InitVal->Name)); } if (!Val) { Val = __UNCONST(InitVal->Val); } /* * Entry requests an initial value, allocate a * descriptor for it. */ ObjDesc = AcpiUtCreateInternalObject (InitVal->Type); if (!ObjDesc) { Status = AE_NO_MEMORY; goto UnlockAndExit; } /* * Convert value string from table entry to * internal representation. Only types actually * used for initial values are implemented here. */ switch (InitVal->Type) { case ACPI_TYPE_METHOD: ObjDesc->Method.ParamCount = (UINT8) ACPI_TO_INTEGER (Val); ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID; #if defined (ACPI_ASL_COMPILER) /* Save the parameter count for the iASL compiler */ NewNode->Value = ObjDesc->Method.ParamCount; #else /* Mark this as a very SPECIAL method */ ObjDesc->Method.InfoFlags = ACPI_METHOD_INTERNAL_ONLY; ObjDesc->Method.Dispatch.Implementation = AcpiUtOsiImplementation; #endif break; case ACPI_TYPE_INTEGER: ObjDesc->Integer.Value = ACPI_TO_INTEGER (Val); break; case ACPI_TYPE_STRING: /* Build an object around the static string */ ObjDesc->String.Length = (UINT32) strlen (Val); ObjDesc->String.Pointer = Val; ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER; break; case ACPI_TYPE_MUTEX: ObjDesc->Mutex.Node = NewNode; ObjDesc->Mutex.SyncLevel = (UINT8) (ACPI_TO_INTEGER (Val) - 1); /* Create a mutex */ Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex); if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ObjDesc); goto UnlockAndExit; } /* Special case for ACPI Global Lock */ if (strcmp (InitVal->Name, "_GL_") == 0) { AcpiGbl_GlobalLockMutex = ObjDesc; /* Create additional counting semaphore for global lock */ Status = AcpiOsCreateSemaphore ( 1, 0, &AcpiGbl_GlobalLockSemaphore); if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ObjDesc); goto UnlockAndExit; } } break; default: ACPI_ERROR ((AE_INFO, "Unsupported initial type value 0x%X", InitVal->Type)); AcpiUtRemoveReference (ObjDesc); ObjDesc = NULL; continue; } /* Store pointer to value descriptor in the Node */ Status = AcpiNsAttachObject (NewNode, ObjDesc, ObjDesc->Common.Type); /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); } } UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); /* Save a handle to "_GPE", it is always present */ if (ACPI_SUCCESS (Status)) { Status = AcpiNsGetNode (NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH, &AcpiGbl_FadtGpeDevice); } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiExLoadOp ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT *Target, ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT *DdbHandle; ACPI_TABLE_HEADER *TableHeader; ACPI_TABLE_HEADER *Table; UINT32 TableIndex; ACPI_STATUS Status; UINT32 Length; ACPI_FUNCTION_TRACE (ExLoadOp); /* Source Object can be either an OpRegion or a Buffer/Field */ switch (ObjDesc->Common.Type) { case ACPI_TYPE_REGION: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load table from Region %p\n", ObjDesc)); /* Region must be SystemMemory (from ACPI spec) */ if (ObjDesc->Region.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) { return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* * If the Region Address and Length have not been previously * evaluated, evaluate them now and save the results. */ if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)) { Status = AcpiDsGetRegionArguments (ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* Get the table header first so we can get the table length */ TableHeader = ACPI_ALLOCATE (sizeof (ACPI_TABLE_HEADER)); if (!TableHeader) { return_ACPI_STATUS (AE_NO_MEMORY); } Status = AcpiExRegionRead (ObjDesc, sizeof (ACPI_TABLE_HEADER), ACPI_CAST_PTR (UINT8, TableHeader)); Length = TableHeader->Length; ACPI_FREE (TableHeader); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Must have at least an ACPI table header */ if (Length < sizeof (ACPI_TABLE_HEADER)) { return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); } /* * The original implementation simply mapped the table, with no copy. * However, the memory region is not guaranteed to remain stable and * we must copy the table to a local buffer. For example, the memory * region is corrupted after suspend on some machines. Dynamically * loaded tables are usually small, so this overhead is minimal. * * The latest implementation (5/2009) does not use a mapping at all. * We use the low-level operation region interface to read the table * instead of the obvious optimization of using a direct mapping. * This maintains a consistent use of operation regions across the * entire subsystem. This is important if additional processing must * be performed in the (possibly user-installed) operation region * handler. For example, AcpiExec and ASLTS depend on this. */ /* Allocate a buffer for the table */ Table = ACPI_ALLOCATE (Length); if (!Table) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Read the entire table */ Status = AcpiExRegionRead (ObjDesc, Length, ACPI_CAST_PTR (UINT8, Table)); if (ACPI_FAILURE (Status)) { ACPI_FREE (Table); return_ACPI_STATUS (Status); } break; case ACPI_TYPE_BUFFER: /* Buffer or resolved RegionField */ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load table from Buffer or Field %p\n", ObjDesc)); /* Must have at least an ACPI table header */ if (ObjDesc->Buffer.Length < sizeof (ACPI_TABLE_HEADER)) { return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); } /* Get the actual table length from the table header */ TableHeader = ACPI_CAST_PTR ( ACPI_TABLE_HEADER, ObjDesc->Buffer.Pointer); Length = TableHeader->Length; /* Table cannot extend beyond the buffer */ if (Length > ObjDesc->Buffer.Length) { return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); } if (Length < sizeof (ACPI_TABLE_HEADER)) { return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); } /* * Copy the table from the buffer because the buffer could be * modified or even deleted in the future */ Table = ACPI_ALLOCATE (Length); if (!Table) { return_ACPI_STATUS (AE_NO_MEMORY); } memcpy (Table, TableHeader, Length); break; default: return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Install the new table into the local data structures */ ACPI_INFO (("Dynamic OEM Table Load:")); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); Status = AcpiTbInstallStandardTable (ACPI_PTR_TO_PHYSADDR (Table), ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, TRUE, TRUE, &TableIndex); (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); if (ACPI_FAILURE (Status)) { /* Delete allocated table buffer */ ACPI_FREE (Table); return_ACPI_STATUS (Status); } /* * Note: Now table is "INSTALLED", it must be validated before * loading. */ Status = AcpiTbValidateTable ( &AcpiGbl_RootTableList.Tables[TableIndex]); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Add the table to the namespace. * * Note: Load the table objects relative to the root of the namespace. * This appears to go against the ACPI specification, but we do it for * compatibility with other ACPI implementations. */ Status = AcpiExAddTable (TableIndex, AcpiGbl_RootNode, &DdbHandle); if (ACPI_FAILURE (Status)) { /* On error, TablePtr was deallocated above */ return_ACPI_STATUS (Status); } /* Store the DdbHandle into the Target operand */ Status = AcpiExStore (DdbHandle, Target, WalkState); if (ACPI_FAILURE (Status)) { (void) AcpiExUnloadTable (DdbHandle); /* TablePtr was deallocated above */ AcpiUtRemoveReference (DdbHandle); return_ACPI_STATUS (Status); } /* Remove the reference by added by AcpiExStore above */ AcpiUtRemoveReference (DdbHandle); /* Invoke table handler if present */ if (AcpiGbl_TableHandler) { (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, Table, AcpiGbl_TableHandlerContext); } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiWalkNamespace ( ACPI_OBJECT_TYPE Type, ACPI_HANDLE StartObject, UINT32 MaxDepth, ACPI_WALK_CALLBACK UserFunction, void *Context, void **ReturnValue) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiWalkNamespace); /* Parameter validation */ if ((Type > ACPI_TYPE_LOCAL_MAX) || (!MaxDepth) || (!UserFunction)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Need to acquire the namespace reader lock to prevent interference * with any concurrent table unloads (which causes the deletion of * namespace objects). We cannot allow the deletion of a namespace node * while the user function is using it. The exception to this are the * nodes created and deleted during control method execution -- these * nodes are marked as temporary nodes and are ignored by the namespace * walk. Thus, control methods can be executed while holding the * namespace deletion lock (and the user function can execute control * methods.) */ Status = AcpiUtAcquireReadLock (&AcpiGbl_NamespaceRwLock); if (ACPI_FAILURE (Status)) { return (Status); } /* * Lock the namespace around the walk. The namespace will be * unlocked/locked around each call to the user function - since the user * function must be allowed to make ACPICA calls itself (for example, it * will typically execute control methods during device enumeration.) */ Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } Status = AcpiNsWalkNamespace (Type, StartObject, MaxDepth, ACPI_NS_WALK_UNLOCK, UserFunction, Context, ReturnValue); (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); UnlockAndExit: (void) AcpiUtReleaseReadLock (&AcpiGbl_NamespaceRwLock); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiNsLoadTable ( UINT32 TableIndex, ACPI_NAMESPACE_NODE *Node) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (NsLoadTable); /* * Parse the table and load the namespace with all named * objects found within. Control methods are NOT parsed * at this time. In fact, the control methods cannot be * parsed until the entire namespace is loaded, because * if a control method makes a forward reference (call) * to another control method, we can't continue parsing * because we don't know how many arguments to parse next! */ Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* If table already loaded into namespace, just return */ if (AcpiTbIsTableLoaded (TableIndex)) { Status = AE_ALREADY_EXISTS; goto Unlock; } ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Loading table into namespace ****\n")); Status = AcpiTbAllocateOwnerId (TableIndex); if (ACPI_FAILURE (Status)) { goto Unlock; } Status = AcpiNsParseTable (TableIndex, Node); if (ACPI_SUCCESS (Status)) { AcpiTbSetTableLoadedFlag (TableIndex, TRUE); } else { (void) AcpiTbReleaseOwnerId (TableIndex); } Unlock: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Now we can parse the control methods. We always parse * them here for a sanity check, and if configured for * just-in-time parsing, we delete the control method * parse trees. */ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Begin Table Object Initialization\n")); Status = AcpiDsInitializeObjects (TableIndex, Node); ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Completed Table Object Initialization\n")); return_ACPI_STATUS (Status); }
static ACPI_STATUS AcpiDbStartCommand ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op) { ACPI_STATUS Status; /* TBD: [Investigate] are there namespace locking issues here? */ /* AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); */ /* Go into the command loop and await next user command */ AcpiGbl_MethodExecuting = TRUE; Status = AE_CTRL_TRUE; while (Status == AE_CTRL_TRUE) { if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED) { /* Handshake with the front-end that gets user command lines */ Status = AcpiUtReleaseMutex (ACPI_MTX_DEBUG_CMD_COMPLETE); if (ACPI_FAILURE (Status)) { return (Status); } Status = AcpiUtAcquireMutex (ACPI_MTX_DEBUG_CMD_READY); if (ACPI_FAILURE (Status)) { return (Status); } } else { /* Single threaded, we must get a command line ourselves */ /* Force output to console until a command is entered */ AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT); /* Different prompt if method is executing */ if (!AcpiGbl_MethodExecuting) { AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT); } else { AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT); } /* Get the user input line */ Status = AcpiOsGetLine (AcpiGbl_DbLineBuf, ACPI_DB_LINE_BUFFER_SIZE, NULL); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "While parsing command line")); return (Status); } } Status = AcpiDbCommandDispatch (AcpiGbl_DbLineBuf, WalkState, Op); } /* AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); */ return (Status); }
ACPI_STATUS AcpiRemoveNotifyHandler ( ACPI_HANDLE Device, UINT32 HandlerType, ACPI_NOTIFY_HANDLER Handler) { ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Device); ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *PreviousHandlerObj; ACPI_STATUS Status = AE_OK; UINT32 i; ACPI_FUNCTION_TRACE (AcpiRemoveNotifyHandler); /* Parameter validation */ if ((!Device) || (!Handler) || (!HandlerType) || (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Root Object. Global handlers are removed here */ if (Device == ACPI_ROOT_OBJECT) { for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) { if (HandlerType & (i+1)) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (!AcpiGbl_GlobalNotify[i].Handler || (AcpiGbl_GlobalNotify[i].Handler != Handler)) { Status = AE_NOT_EXIST; goto UnlockAndExit; } ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Removing global notify handler\n")); AcpiGbl_GlobalNotify[i].Handler = NULL; AcpiGbl_GlobalNotify[i].Context = NULL; (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); /* Make sure all deferred notify tasks are completed */ AcpiOsWaitEventsComplete (); } } return_ACPI_STATUS (AE_OK); } /* All other objects: Are Notifies allowed on this object? */ if (!AcpiEvIsNotifyObject (Node)) { return_ACPI_STATUS (AE_TYPE); } /* Must have an existing internal object */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { return_ACPI_STATUS (AE_NOT_EXIST); } /* Internal object exists. Find the handler and remove it */ for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) { if (HandlerType & (i+1)) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } HandlerObj = ObjDesc->CommonNotify.NotifyList[i]; PreviousHandlerObj = NULL; /* Attempt to find the handler in the handler list */ while (HandlerObj && (HandlerObj->Notify.Handler != Handler)) { PreviousHandlerObj = HandlerObj; HandlerObj = HandlerObj->Notify.Next[i]; } if (!HandlerObj) { Status = AE_NOT_EXIST; goto UnlockAndExit; } /* Remove the handler object from the list */ if (PreviousHandlerObj) /* Handler is not at the list head */ { PreviousHandlerObj->Notify.Next[i] = HandlerObj->Notify.Next[i]; } else /* Handler is at the list head */ { ObjDesc->CommonNotify.NotifyList[i] = HandlerObj->Notify.Next[i]; } (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); /* Make sure all deferred notify tasks are completed */ AcpiOsWaitEventsComplete (); AcpiUtRemoveReference (HandlerObj); } } return_ACPI_STATUS (Status); UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiLoadTable ( ACPI_TABLE_HEADER *Table) { ACPI_STATUS Status; UINT32 TableIndex; ACPI_FUNCTION_TRACE (AcpiLoadTable); /* Parameter validation */ if (!Table) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Must acquire the interpreter lock during this operation */ Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Install the table and load it into the namespace */ ACPI_INFO ((AE_INFO, "Host-directed Dynamic ACPI Table Load:")); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); Status = AcpiTbInstallStandardTable (ACPI_PTR_TO_PHYSADDR (Table), ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL, TRUE, FALSE, &TableIndex); (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } /* * Note: Now table is "INSTALLED", it must be validated before * using. */ Status = AcpiTbValidateTable (&AcpiGbl_RootTableList.Tables[TableIndex]); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } Status = AcpiNsLoadTable (TableIndex, AcpiGbl_RootNode); /* Invoke table handler if present */ if (AcpiGbl_TableHandler) { (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, Table, AcpiGbl_TableHandlerContext); } UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiInstallSciHandler ( ACPI_SCI_HANDLER Address, void *Context) { ACPI_SCI_HANDLER_INFO *NewSciHandler; ACPI_SCI_HANDLER_INFO *SciHandler; ACPI_CPU_FLAGS Flags; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiInstallSciHandler); if (!Address) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Allocate and init a handler object */ NewSciHandler = ACPI_ALLOCATE (sizeof (ACPI_SCI_HANDLER_INFO)); if (!NewSciHandler) { return_ACPI_STATUS (AE_NO_MEMORY); } NewSciHandler->Address = Address; NewSciHandler->Context = Context; Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { goto Exit; } /* Lock list during installation */ Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); SciHandler = AcpiGbl_SciHandlerList; /* Ensure handler does not already exist */ while (SciHandler) { if (Address == SciHandler->Address) { Status = AE_ALREADY_EXISTS; goto UnlockAndExit; } SciHandler = SciHandler->Next; } /* Install the new handler into the global list (at head) */ NewSciHandler->Next = AcpiGbl_SciHandlerList; AcpiGbl_SciHandlerList = NewSciHandler; UnlockAndExit: AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); Exit: if (ACPI_FAILURE (Status)) { ACPI_FREE (NewSciHandler); } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiUnloadParentTable ( ACPI_HANDLE Object) { ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Object); ACPI_STATUS Status = AE_NOT_EXIST; ACPI_OWNER_ID OwnerId; UINT32 i; ACPI_FUNCTION_TRACE (AcpiUnloadParentTable); /* Parameter validation */ if (!Object) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * The node OwnerId is currently the same as the parent table ID. * However, this could change in the future. */ OwnerId = Node->OwnerId; if (!OwnerId) { /* OwnerId==0 means DSDT is the owner. DSDT cannot be unloaded */ return_ACPI_STATUS (AE_TYPE); } /* Must acquire the interpreter lock during this operation */ Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Find the table in the global table list */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) { if (OwnerId != AcpiGbl_RootTableList.Tables[i].OwnerId) { continue; } /* * Allow unload of SSDT and OEMx tables only. Do not allow unload * of the DSDT. No other types of tables should get here, since * only these types can contain AML and thus are the only types * that can create namespace objects. */ if (ACPI_COMPARE_NAME ( AcpiGbl_RootTableList.Tables[i].Signature.Ascii, ACPI_SIG_DSDT)) { Status = AE_TYPE; break; } /* Ensure the table is actually loaded */ if (!AcpiTbIsTableLoaded (i)) { Status = AE_NOT_EXIST; break; } /* Invoke table handler if present */ if (AcpiGbl_TableHandler) { (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_UNLOAD, AcpiGbl_RootTableList.Tables[i].Pointer, AcpiGbl_TableHandlerContext); } /* * Delete all namespace objects owned by this table. Note that * these objects can appear anywhere in the namespace by virtue * of the AML "Scope" operator. Thus, we need to track ownership * by an ID, not simply a position within the hierarchy. */ Status = AcpiTbDeleteNamespaceByOwner (i); if (ACPI_FAILURE (Status)) { break; } Status = AcpiTbReleaseOwnerId (i); AcpiTbSetTableLoadedFlag (i, FALSE); break; } (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiInstallFixedEventHandler ( UINT32 Event, ACPI_EVENT_HANDLER Handler, void *Context) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiInstallFixedEventHandler); /* Parameter validation */ if (Event > ACPI_EVENT_MAX) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Do not allow multiple handlers */ if (AcpiGbl_FixedEventHandlers[Event].Handler) { Status = AE_ALREADY_EXISTS; goto Cleanup; } /* Install the handler before enabling the event */ AcpiGbl_FixedEventHandlers[Event].Handler = Handler; AcpiGbl_FixedEventHandlers[Event].Context = Context; Status = AcpiEnableEvent (Event, 0); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "Could not enable fixed event - %s (%u)", AcpiUtGetEventName (Event), Event)); /* Remove the handler */ AcpiGbl_FixedEventHandlers[Event].Handler = NULL; AcpiGbl_FixedEventHandlers[Event].Context = NULL; } else { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Enabled fixed event %s (%X), Handler=%p\n", AcpiUtGetEventName (Event), Event, Handler)); } Cleanup: (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); }
void AcpiEvDetachRegion ( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsIsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *StartDesc; ACPI_OPERAND_OBJECT **LastObjPtr; ACPI_ADR_SPACE_SETUP RegionSetup; void **RegionContext; ACPI_OPERAND_OBJECT *RegionObj2; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (EvDetachRegion); RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_VOID; } RegionContext = &RegionObj2->Extra.RegionContext; /* Get the address handler from the region object */ HandlerObj = RegionObj->Region.Handler; if (!HandlerObj) { /* This region has no handler, all done */ return_VOID; } /* Find this region in the handler's list */ ObjDesc = HandlerObj->AddressSpace.RegionList; StartDesc = ObjDesc; LastObjPtr = &HandlerObj->AddressSpace.RegionList; while (ObjDesc) { /* Is this the correct Region? */ if (ObjDesc == RegionObj) { ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Removing Region %p from address handler %p\n", RegionObj, HandlerObj)); /* This is it, remove it from the handler's list */ *LastObjPtr = ObjDesc->Region.Next; ObjDesc->Region.Next = NULL; /* Must clear field */ if (AcpiNsIsLocked) { Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_VOID; } } /* Now stop region accesses by executing the _REG method */ Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_DISCONNECT); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "from region _REG, [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } if (AcpiNsIsLocked) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_VOID; } } /* * If the region has been activated, call the setup handler with * the deactivate notification */ if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE) { RegionSetup = HandlerObj->AddressSpace.Setup; Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE, HandlerObj->AddressSpace.Context, RegionContext); /* * RegionContext should have been released by the deactivate * operation. We don't need access to it anymore here. */ if (RegionContext) { *RegionContext = NULL; } /* Init routine may fail, Just ignore errors */ if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "from region handler - deactivate, [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } RegionObj->Region.Flags &= ~(AOPOBJ_SETUP_COMPLETE); } /* * Remove handler reference in the region * * NOTE: this doesn't mean that the region goes away, the region * is just inaccessible as indicated to the _REG method * * If the region is on the handler's list, this must be the * region's handler */ RegionObj->Region.Handler = NULL; AcpiUtRemoveReference (HandlerObj); return_VOID; } /* Walk the linked list of handlers */ LastObjPtr = &ObjDesc->Region.Next; ObjDesc = ObjDesc->Region.Next; /* Prevent infinite loop if list is corrupted */ if (ObjDesc == StartDesc) { ACPI_ERROR ((AE_INFO, "Circular handler list in region object %p", RegionObj)); return_VOID; } } /* If we get here, the region was not in the handler's region list */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Cannot remove region %p from address handler %p\n", RegionObj, HandlerObj)); return_VOID; }
ACPI_STATUS AcpiTbAddTable ( ACPI_TABLE_DESC *TableDesc, UINT32 *TableIndex) { UINT32 i; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (TbAddTable); if (!TableDesc->Pointer) { Status = AcpiTbVerifyTable (TableDesc); if (ACPI_FAILURE (Status) || !TableDesc->Pointer) { return_ACPI_STATUS (Status); } } /* * Validate the incoming table signature. * * 1) Originally, we checked the table signature for "SSDT" or "PSDT". * 2) We added support for OEMx tables, signature "OEM". * 3) Valid tables were encountered with a null signature, so we just * gave up on validating the signature, (05/2008). * 4) We encountered non-AML tables such as the MADT, which caused * interpreter errors and kernel faults. So now, we once again allow * only "SSDT", "OEMx", and now, also a null signature. (05/2011). */ if ((TableDesc->Pointer->Signature[0] != 0x00) && (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) && (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3))) { ACPI_BIOS_ERROR ((AE_INFO, "Table has invalid signature [%4.4s] (0x%8.8X), " "must be SSDT or OEMx", AcpiUtValidAcpiName (*(UINT32 *) TableDesc->Pointer->Signature) ? TableDesc->Pointer->Signature : "????", *(UINT32 *) TableDesc->Pointer->Signature)); return_ACPI_STATUS (AE_BAD_SIGNATURE); } (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* Check if table is already registered */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { if (!AcpiGbl_RootTableList.Tables[i].Pointer) { Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); if (ACPI_FAILURE (Status) || !AcpiGbl_RootTableList.Tables[i].Pointer) { continue; } } /* * Check for a table match on the entire table length, * not just the header. */ if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length) { continue; } if (ACPI_MEMCMP (TableDesc->Pointer, AcpiGbl_RootTableList.Tables[i].Pointer, AcpiGbl_RootTableList.Tables[i].Length)) { continue; } /* * Note: the current mechanism does not unregister a table if it is * dynamically unloaded. The related namespace entries are deleted, * but the table remains in the root table list. * * The assumption here is that the number of different tables that * will be loaded is actually small, and there is minimal overhead * in just keeping the table in case it is needed again. * * If this assumption changes in the future (perhaps on large * machines with many table load/unload operations), tables will * need to be unregistered when they are unloaded, and slots in the * root table list should be reused when empty. */ /* * Table is already registered. * We can delete the table that was passed as a parameter. */ AcpiTbDeleteTable (TableDesc); *TableIndex = i; if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED) { /* Table is still loaded, this is an error */ Status = AE_ALREADY_EXISTS; goto Release; } else { /* Table was unloaded, allow it to be reloaded */ TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer; TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address; Status = AE_OK; goto PrintHeader; } } /* * ACPI Table Override: * Allow the host to override dynamically loaded tables. * NOTE: the table is fully mapped at this point, and the mapping will * be deleted by TbTableOverride if the table is actually overridden. */ (void) AcpiTbTableOverride (TableDesc->Pointer, TableDesc); /* Add the table to the global root table list */ Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer, TableDesc->Length, TableDesc->Flags, TableIndex); if (ACPI_FAILURE (Status)) { goto Release; } PrintHeader: AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer); Release: (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); }
static void AcpiEvOrphanEcRegMethod ( ACPI_NAMESPACE_NODE *EcDeviceNode) { ACPI_HANDLE RegMethod; ACPI_NAMESPACE_NODE *NextNode; ACPI_STATUS Status; ACPI_OBJECT_LIST Args; ACPI_OBJECT Objects[2]; ACPI_FUNCTION_TRACE (EvOrphanEcRegMethod); if (!EcDeviceNode) { return_VOID; } /* Namespace is currently locked, must release */ (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); /* Get a handle to a _REG method immediately under the EC device */ Status = AcpiGetHandle (EcDeviceNode, METHOD_NAME__REG, &RegMethod); if (ACPI_FAILURE (Status)) { goto Exit; /* There is no _REG method present */ } /* * Execute the _REG method only if there is no Operation Region in * this scope with the Embedded Controller space ID. Otherwise, it * will already have been executed. Note, this allows for Regions * with other space IDs to be present; but the code below will then * execute the _REG method with the EmbeddedControl SpaceID argument. */ NextNode = AcpiNsGetNextNode (EcDeviceNode, NULL); while (NextNode) { if ((NextNode->Type == ACPI_TYPE_REGION) && (NextNode->Object) && (NextNode->Object->Region.SpaceId == ACPI_ADR_SPACE_EC)) { goto Exit; /* Do not execute the _REG */ } NextNode = AcpiNsGetNextNode (EcDeviceNode, NextNode); } /* Evaluate the _REG(EmbeddedControl,Connect) method */ Args.Count = 2; Args.Pointer = Objects; Objects[0].Type = ACPI_TYPE_INTEGER; Objects[0].Integer.Value = ACPI_ADR_SPACE_EC; Objects[1].Type = ACPI_TYPE_INTEGER; Objects[1].Integer.Value = ACPI_REG_CONNECT; Status = AcpiEvaluateObject (RegMethod, NULL, &Args, NULL); Exit: /* We ignore all errors from above, don't care */ Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); return_VOID; }
ACPI_STATUS AcpiUtAllocateOwnerId ( ACPI_OWNER_ID *OwnerId) { UINT32 i; UINT32 j; UINT32 k; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (UtAllocateOwnerId); /* Guard against multiple allocations of ID to the same location */ if (*OwnerId) { ACPI_ERROR ((AE_INFO, "Owner ID [0x%2.2X] already exists", *OwnerId)); return_ACPI_STATUS (AE_ALREADY_EXISTS); } /* Mutex for the global ID mask */ Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Find a free owner ID, cycle through all possible IDs on repeated * allocations. (ACPI_NUM_OWNERID_MASKS + 1) because first index * may have to be scanned twice. */ for (i = 0, j = AcpiGbl_LastOwnerIdIndex; i < (ACPI_NUM_OWNERID_MASKS + 1); i++, j++) { if (j >= ACPI_NUM_OWNERID_MASKS) { j = 0; /* Wraparound to start of mask array */ } for (k = AcpiGbl_NextOwnerIdOffset; k < 32; k++) { if (AcpiGbl_OwnerIdMask[j] == ACPI_UINT32_MAX) { /* There are no free IDs in this mask */ break; } if (!(AcpiGbl_OwnerIdMask[j] & (1 << k))) { /* * Found a free ID. The actual ID is the bit index plus one, * making zero an invalid Owner ID. Save this as the last ID * allocated and update the global ID mask. */ AcpiGbl_OwnerIdMask[j] |= (1 << k); AcpiGbl_LastOwnerIdIndex = (UINT8) j; AcpiGbl_NextOwnerIdOffset = (UINT8) (k + 1); /* * Construct encoded ID from the index and bit position * * Note: Last [j].k (bit 255) is never used and is marked * permanently allocated (prevents +1 overflow) */ *OwnerId = (ACPI_OWNER_ID) ((k + 1) + ACPI_MUL_32 (j)); ACPI_DEBUG_PRINT ((ACPI_DB_VALUES, "Allocated OwnerId: %2.2X\n", (unsigned int) *OwnerId)); goto Exit; } } AcpiGbl_NextOwnerIdOffset = 0; } /* * All OwnerIds have been allocated. This typically should * not happen since the IDs are reused after deallocation. The IDs are * allocated upon table load (one per table) and method execution, and * they are released when a table is unloaded or a method completes * execution. * * If this error happens, there may be very deep nesting of invoked * control methods, or there may be a bug where the IDs are not released. */ Status = AE_OWNER_ID_LIMIT; ACPI_ERROR ((AE_INFO, "Could not allocate new OwnerId (255 max), AE_OWNER_ID_LIMIT")); Exit: (void) AcpiUtReleaseMutex (ACPI_MTX_CACHES); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiRemoveAddressSpaceHandler ( ACPI_HANDLE Device, ACPI_ADR_SPACE_TYPE SpaceId, ACPI_ADR_SPACE_HANDLER Handler) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *RegionObj; ACPI_OPERAND_OBJECT **LastObjPtr; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiRemoveAddressSpaceHandler); /* Parameter validation */ if (!Device) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Convert and validate the device handle */ Node = AcpiNsValidateHandle (Device); if (!Node || ((Node->Type != ACPI_TYPE_DEVICE) && (Node->Type != ACPI_TYPE_PROCESSOR) && (Node->Type != ACPI_TYPE_THERMAL) && (Node != AcpiGbl_RootNode))) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Make sure the internal object exists */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { Status = AE_NOT_EXIST; goto UnlockAndExit; } /* Find the address handler the user requested */ HandlerObj = ObjDesc->CommonNotify.Handler; LastObjPtr = &ObjDesc->CommonNotify.Handler; while (HandlerObj) { /* We have a handler, see if user requested this one */ if (HandlerObj->AddressSpace.SpaceId == SpaceId) { /* Handler must be the same as the installed handler */ if (HandlerObj->AddressSpace.Handler != Handler) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Matched SpaceId, first dereference this in the Regions */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Removing address handler %p(%p) for region %s " "on Device %p(%p)\n", HandlerObj, Handler, AcpiUtGetRegionName (SpaceId), Node, ObjDesc)); RegionObj = HandlerObj->AddressSpace.RegionList; /* Walk the handler's region list */ while (RegionObj) { /* * First disassociate the handler from the region. * * NOTE: this doesn't mean that the region goes away * The region is just inaccessible as indicated to * the _REG method */ AcpiEvDetachRegion (RegionObj, TRUE); /* * Walk the list: Just grab the head because the * DetachRegion removed the previous head. */ RegionObj = HandlerObj->AddressSpace.RegionList; } /* Remove this Handler object from the list */ *LastObjPtr = HandlerObj->AddressSpace.Next; /* Now we can delete the handler object */ AcpiUtRemoveReference (HandlerObj); goto UnlockAndExit; } /* Walk the linked list of handlers */ LastObjPtr = &HandlerObj->AddressSpace.Next; HandlerObj = HandlerObj->AddressSpace.Next; } /* The handler does not exist */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n", Handler, AcpiUtGetRegionName (SpaceId), SpaceId, Node, ObjDesc)); Status = AE_NOT_EXIST; UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
void AcpiUtDumpAllocations ( UINT32 Component, const char *Module) { ACPI_DEBUG_MEM_BLOCK *Element; ACPI_DESCRIPTOR *Descriptor; UINT32 NumOutstanding = 0; ACPI_FUNCTION_TRACE (UtDumpAllocations); /* * Walk the allocation list. */ if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_MEMORY))) { return; } Element = AcpiGbl_GlobalList->ListHead; while (Element) { if ((Element->Component & Component) && ((Module == NULL) || (0 == ACPI_STRCMP (Module, Element->Module)))) { /* Ignore allocated objects that are in a cache */ Descriptor = ACPI_CAST_PTR (ACPI_DESCRIPTOR, &Element->UserSpace); if (ACPI_GET_DESCRIPTOR_TYPE (Descriptor) != ACPI_DESC_TYPE_CACHED) { AcpiOsPrintf ("%p Len %04X %9.9s-%d [%s] ", Descriptor, Element->Size, Element->Module, Element->Line, AcpiUtGetDescriptorName (Descriptor)); /* Most of the elements will be Operand objects. */ switch (ACPI_GET_DESCRIPTOR_TYPE (Descriptor)) { case ACPI_DESC_TYPE_OPERAND: AcpiOsPrintf ("%12.12s R%hd", AcpiUtGetTypeName (Descriptor->Object.Common.Type), Descriptor->Object.Common.ReferenceCount); break; case ACPI_DESC_TYPE_PARSER: AcpiOsPrintf ("AmlOpcode %04hX", Descriptor->Op.Asl.AmlOpcode); break; case ACPI_DESC_TYPE_NAMED: AcpiOsPrintf ("%4.4s", AcpiUtGetNodeName (&Descriptor->Node)); break; default: break; } AcpiOsPrintf ( "\n"); NumOutstanding++; } } Element = Element->Next; } (void) AcpiUtReleaseMutex (ACPI_MTX_MEMORY); /* Print summary */ if (!NumOutstanding) { ACPI_INFO ((AE_INFO, "No outstanding allocations")); } else { ACPI_ERROR ((AE_INFO, "%d(%X) Outstanding allocations", NumOutstanding, NumOutstanding)); } return_VOID; }
ACPI_STATUS AcpiRemoveGpeHandler ( ACPI_HANDLE GpeDevice, UINT32 GpeNumber, ACPI_GPE_HANDLER Address) { ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_GPE_HANDLER_INFO *Handler; ACPI_STATUS Status; ACPI_CPU_FLAGS Flags; ACPI_FUNCTION_TRACE (AcpiRemoveGpeHandler); /* Parameter validation */ if (!Address) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); if (!GpeEventInfo) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Make sure that a handler is indeed installed */ if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) != ACPI_GPE_DISPATCH_HANDLER) && (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) != ACPI_GPE_DISPATCH_RAW_HANDLER)) { Status = AE_NOT_EXIST; goto UnlockAndExit; } /* Make sure that the installed handler is the same */ if (GpeEventInfo->Dispatch.Handler->Address != Address) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Remove the handler */ Handler = GpeEventInfo->Dispatch.Handler; GpeEventInfo->Dispatch.Handler = NULL; /* Restore Method node (if any), set dispatch flags */ GpeEventInfo->Dispatch.MethodNode = Handler->MethodNode; GpeEventInfo->Flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); GpeEventInfo->Flags |= Handler->OriginalFlags; /* * If the GPE was previously associated with a method and it was * enabled, it should be enabled at this point to restore the * post-initialization configuration. */ if (((ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) == ACPI_GPE_DISPATCH_METHOD) || (ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) == ACPI_GPE_DISPATCH_NOTIFY)) && Handler->OriginallyEnabled) { (void) AcpiEvAddGpeReference (GpeEventInfo); } AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); /* Make sure all deferred GPE tasks are completed */ AcpiOsWaitEventsComplete (); /* Now we can free the handler object */ ACPI_FREE (Handler); return_ACPI_STATUS (Status); UnlockAndExit: AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); return_ACPI_STATUS (Status); }
static ACPI_STATUS AcpiNsGetDeviceCallback ( ACPI_HANDLE ObjHandle, UINT32 NestingLevel, void *Context, void **ReturnValue) { ACPI_GET_DEVICES_INFO *Info = Context; ACPI_STATUS Status; ACPI_NAMESPACE_NODE *Node; UINT32 Flags; ACPI_DEVICE_ID Hid; ACPI_COMPATIBLE_ID_LIST *Cid; ACPI_NATIVE_UINT i; BOOLEAN Found; Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } Node = AcpiNsMapHandleToNode (ObjHandle); Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } if (!Node) { return (AE_BAD_PARAMETER); } /* Run _STA to determine if device is present */ Status = AcpiUtExecute_STA (Node, &Flags); if (ACPI_FAILURE (Status)) { return (AE_CTRL_DEPTH); } if (!(Flags & ACPI_STA_DEVICE_PRESENT) && !(Flags & ACPI_STA_DEVICE_FUNCTIONING)) { /* * Don't examine the children of the device only when the * device is neither present nor functional. See ACPI spec, * description of _STA for more information. */ return (AE_CTRL_DEPTH); } /* Filter based on device HID & CID */ if (Info->Hid != NULL) { Status = AcpiUtExecute_HID (Node, &Hid); if (Status == AE_NOT_FOUND) { return (AE_OK); } else if (ACPI_FAILURE (Status)) { return (AE_CTRL_DEPTH); } if (ACPI_STRNCMP (Hid.Value, Info->Hid, sizeof (Hid.Value)) != 0) { /* * HID does not match, attempt match within the * list of Compatible IDs (CIDs) */ Status = AcpiUtExecute_CID (Node, &Cid); if (Status == AE_NOT_FOUND) { return (AE_OK); } else if (ACPI_FAILURE (Status)) { return (AE_CTRL_DEPTH); } /* Walk the CID list */ Found = FALSE; for (i = 0; i < Cid->Count; i++) { if (ACPI_STRNCMP (Cid->Id[i].Value, Info->Hid, sizeof (ACPI_COMPATIBLE_ID)) == 0) { /* Found a matching CID */ Found = TRUE; break; } } ACPI_FREE (Cid); if (!Found) { return (AE_OK); } } } /* We have a valid device, invoke the user function */ Status = Info->UserFunction (ObjHandle, NestingLevel, Info->Context, ReturnValue); return (Status); }
ACPI_STATUS AcpiInstallNotifyHandler ( ACPI_HANDLE Device, UINT32 HandlerType, ACPI_NOTIFY_HANDLER Handler, void *Context) { ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Device); ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_STATUS Status; UINT32 i; ACPI_FUNCTION_TRACE (AcpiInstallNotifyHandler); /* Parameter validation */ if ((!Device) || (!Handler) || (!HandlerType) || (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Root Object: * Registering a notify handler on the root object indicates that the * caller wishes to receive notifications for all objects. Note that * only one global handler can be registered per notify type. * Ensure that a handler is not already installed. */ if (Device == ACPI_ROOT_OBJECT) { for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) { if (HandlerType & (i+1)) { if (AcpiGbl_GlobalNotify[i].Handler) { Status = AE_ALREADY_EXISTS; goto UnlockAndExit; } AcpiGbl_GlobalNotify[i].Handler = Handler; AcpiGbl_GlobalNotify[i].Context = Context; } } goto UnlockAndExit; /* Global notify handler installed, all done */ } /* * All Other Objects: * Caller will only receive notifications specific to the target * object. Note that only certain object types are allowed to * receive notifications. */ /* Are Notifies allowed on this object? */ if (!AcpiEvIsNotifyObject (Node)) { Status = AE_TYPE; goto UnlockAndExit; } /* Check for an existing internal object, might not exist */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { /* Create a new object */ ObjDesc = AcpiUtCreateInternalObject (Node->Type); if (!ObjDesc) { Status = AE_NO_MEMORY; goto UnlockAndExit; } /* Attach new object to the Node, remove local reference */ Status = AcpiNsAttachObject (Device, ObjDesc, Node->Type); AcpiUtRemoveReference (ObjDesc); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } } /* Ensure that the handler is not already installed in the lists */ for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) { if (HandlerType & (i+1)) { HandlerObj = ObjDesc->CommonNotify.NotifyList[i]; while (HandlerObj) { if (HandlerObj->Notify.Handler == Handler) { Status = AE_ALREADY_EXISTS; goto UnlockAndExit; } HandlerObj = HandlerObj->Notify.Next[i]; } } } /* Create and populate a new notify handler object */ HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_NOTIFY); if (!HandlerObj) { Status = AE_NO_MEMORY; goto UnlockAndExit; } HandlerObj->Notify.Node = Node; HandlerObj->Notify.HandlerType = HandlerType; HandlerObj->Notify.Handler = Handler; HandlerObj->Notify.Context = Context; /* Install the handler at the list head(s) */ for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) { if (HandlerType & (i+1)) { HandlerObj->Notify.Next[i] = ObjDesc->CommonNotify.NotifyList[i]; ObjDesc->CommonNotify.NotifyList[i] = HandlerObj; } } /* Add an extra reference if handler was installed in both lists */ if (HandlerType == ACPI_ALL_NOTIFY) { AcpiUtAddReference (HandlerObj); } UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiDsInitializeObjects ( UINT32 TableIndex, ACPI_NAMESPACE_NODE *StartNode) { ACPI_STATUS Status; ACPI_INIT_WALK_INFO Info; ACPI_TABLE_HEADER *Table; ACPI_OWNER_ID OwnerId; ACPI_FUNCTION_TRACE (DsInitializeObjects); Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "**** Starting initialization of namespace objects ****\n")); ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:")); /* Set all init info to zero */ ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); Info.OwnerId = OwnerId; Info.TableIndex = TableIndex; /* Walk entire namespace from the supplied root */ Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * We don't use AcpiWalkNamespace since we do not want to acquire * the namespace reader lock. */ Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); } (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); Status = AcpiGetTableByIndex (TableIndex, &Table); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n", Table->Signature, OwnerId, Info.ObjectCount, Info.DeviceCount, Info.MethodCount, Info.OpRegionCount)); ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n", Info.MethodCount, Info.OpRegionCount)); return_ACPI_STATUS (AE_OK); }
ACPI_STATUS AcpiTbLoadNamespace ( void) { ACPI_STATUS Status; UINT32 i; ACPI_TABLE_HEADER *NewDsdt; ACPI_TABLE_DESC *Table; UINT32 TablesLoaded = 0; UINT32 TablesFailed = 0; ACPI_FUNCTION_TRACE (TbLoadNamespace); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* * Load the namespace. The DSDT is required, but any SSDT and * PSDT tables are optional. Verify the DSDT. */ Table = &AcpiGbl_RootTableList.Tables[AcpiGbl_DsdtIndex]; if (!AcpiGbl_RootTableList.CurrentTableCount || !ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_DSDT) || ACPI_FAILURE (AcpiTbValidateTable (Table))) { Status = AE_NO_ACPI_TABLES; goto UnlockAndExit; } /* * Save the DSDT pointer for simple access. This is the mapped memory * address. We must take care here because the address of the .Tables * array can change dynamically as tables are loaded at run-time. Note: * .Pointer field is not validated until after call to AcpiTbValidateTable. */ AcpiGbl_DSDT = Table->Pointer; /* * Optionally copy the entire DSDT to local memory (instead of simply * mapping it.) There are some BIOSs that corrupt or replace the original * DSDT, creating the need for this option. Default is FALSE, do not copy * the DSDT. */ if (AcpiGbl_CopyDsdtLocally) { NewDsdt = AcpiTbCopyDsdt (AcpiGbl_DsdtIndex); if (NewDsdt) { AcpiGbl_DSDT = NewDsdt; } } /* * Save the original DSDT header for detection of table corruption * and/or replacement of the DSDT from outside the OS. */ memcpy (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT, sizeof (ACPI_TABLE_HEADER)); (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); /* Load and parse tables */ Status = AcpiNsLoadTable (AcpiGbl_DsdtIndex, AcpiGbl_RootNode); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "[DSDT] table load failed")); TablesFailed++; } else { TablesLoaded++; } /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */ (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { Table = &AcpiGbl_RootTableList.Tables[i]; if (!AcpiGbl_RootTableList.Tables[i].Address || (!ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_SSDT) && !ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_PSDT) && !ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_OSDT)) || ACPI_FAILURE (AcpiTbValidateTable (Table))) { continue; } /* Ignore errors while loading tables, get as many as possible */ (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); Status = AcpiNsLoadTable (i, AcpiGbl_RootNode); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "(%4.4s:%8.8s) while loading table", Table->Signature.Ascii, Table->Pointer->OemTableId)); TablesFailed++; ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n", Table->Signature.Ascii, Table->Pointer->OemTableId)); } else { TablesLoaded++; } (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); } if (!TablesFailed) { ACPI_INFO ((AE_INFO, "%u ACPI AML tables successfully acquired and loaded", TablesLoaded)); } else { ACPI_ERROR ((AE_INFO, "%u table load failures, %u successful", TablesFailed, TablesLoaded)); /* Indicate at least one failure */ Status = AE_CTRL_TERMINATE; } UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); }