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);
}
