ACPI_STATUS
AcpiDsGetBankFieldArguments (
ACPI_OPERAND_OBJECT *ObjDesc)
{
ACPI_OPERAND_OBJECT *ExtraDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc);
if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
{
return_ACPI_STATUS (AE_OK);
}
/* Get the AML pointer (method object) and BankField node */
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
Node = ObjDesc->BankField.Node;
ACPI_DEBUG_EXEC(AcpiUtDisplayInitPathname (ACPI_TYPE_LOCAL_BANK_FIELD, Node, NULL));
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
AcpiUtGetNodeName (Node)));
/* Execute the AML code for the TermArg arguments */
Status = AcpiDsExecuteArguments (Node, AcpiNsGetParentNode (Node),
ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsGetRegionArguments (
ACPI_OPERAND_OBJECT *ObjDesc)
{
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ExtraDesc;
ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc);
if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
{
return_ACPI_STATUS (AE_OK);
}
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
if (!ExtraDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Get the Region node */
Node = ObjDesc->Region.Node;
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_REGION, Node, NULL));
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n",
AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart));
/* Execute the argument AML */
Status = AcpiDsExecuteArguments (Node, AcpiNsGetParentNode (Node),
ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Validate the region address/length via the host OS */
Status = AcpiOsValidateAddress (ObjDesc->Region.SpaceId,
ObjDesc->Region.Address, (ACPI_SIZE) ObjDesc->Region.Length);
if (ACPI_FAILURE (Status))
{
/*
* Invalid address/length. We will emit an error message and mark
* the region as invalid, so that it will cause an additional error if
* it is ever used. Then return AE_OK.
*/
ACPI_EXCEPTION ((AE_INFO, Status,
"During address validation of OpRegion [%4.4s]", Node->Name.Ascii));
ObjDesc->Common.Flags |= AOPOBJ_INVALID;
Status = AE_OK;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsGetRegionArguments (
ACPI_OPERAND_OBJECT *ObjDesc)
{
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ExtraDesc;
ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc);
if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
{
return_ACPI_STATUS (AE_OK);
}
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
if (!ExtraDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Get the Region node */
Node = ObjDesc->Region.Node;
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
ACPI_TYPE_REGION, Node, NULL));
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"[%4.4s] OpRegion Arg Init at AML %p\n",
AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart));
/* Execute the argument AML */
Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode,
ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId,
ObjDesc->Region.Address, ObjDesc->Region.Length, Node);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsGetRegionArguments (
ACPI_OPERAND_OBJECT *ObjDesc)
{
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ExtraDesc;
ACPI_FUNCTION_TRACE_PTR ("DsGetRegionArguments", ObjDesc);
if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
{
return_ACPI_STATUS (AE_OK);
}
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
if (!ExtraDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Get the Region node */
Node = ObjDesc->Region.Node;
ACPI_DEBUG_EXEC(AcpiUtDisplayInitPathname (ACPI_TYPE_REGION, Node, NULL));
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] OpRegion Init at AML %p\n",
Node->Name.Ascii, ExtraDesc->Extra.AmlStart));
Status = AcpiDsExecuteArguments (Node, AcpiNsGetParentNode (Node),
ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
return_ACPI_STATUS (Status);
}
static ACPI_STATUS
AcpiNsInitOneDevice (
ACPI_HANDLE ObjHandle,
UINT32 NestingLevel,
void *Context,
void **ReturnValue)
{
ACPI_DEVICE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
ACPI_EVALUATE_INFO *Info = WalkInfo->EvaluateInfo;
UINT32 Flags;
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *DeviceNode;
ACPI_FUNCTION_TRACE (NsInitOneDevice);
/* We are interested in Devices, Processors and ThermalZones only */
DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
if ((DeviceNode->Type != ACPI_TYPE_DEVICE) &&
(DeviceNode->Type != ACPI_TYPE_PROCESSOR) &&
(DeviceNode->Type != ACPI_TYPE_THERMAL))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Because of an earlier namespace analysis, all subtrees that contain an
* _INI method are tagged.
*
* If this device subtree does not contain any _INI methods, we
* can exit now and stop traversing this entire subtree.
*/
if (!(DeviceNode->Flags & ANOBJ_SUBTREE_HAS_INI))
{
return_ACPI_STATUS (AE_CTRL_DEPTH);
}
/*
* Run _STA to determine if this device is present and functioning. We
* must know this information for two important reasons (from ACPI spec):
*
* 1) We can only run _INI if the device is present.
* 2) We must abort the device tree walk on this subtree if the device is
* not present and is not functional (we will not examine the children)
*
* The _STA method is not required to be present under the device, we
* assume the device is present if _STA does not exist.
*/
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__STA));
Status = AcpiUtExecute_STA (DeviceNode, &Flags);
if (ACPI_FAILURE (Status))
{
/* Ignore error and move on to next device */
return_ACPI_STATUS (AE_OK);
}
/*
* Flags == -1 means that _STA was not found. In this case, we assume that
* the device is both present and functional.
*
* From the ACPI spec, description of _STA:
*
* "If a device object (including the processor object) does not have an
* _STA object, then OSPM assumes that all of the above bits are set (in
* other words, the device is present, ..., and functioning)"
*/
if (Flags != ACPI_UINT32_MAX)
{
WalkInfo->Num_STA++;
}
/*
* Examine the PRESENT and FUNCTIONING status bits
*
* Note: ACPI spec does not seem to specify behavior for the present but
* not functioning case, so we assume functioning if present.
*/
if (!(Flags & ACPI_STA_DEVICE_PRESENT))
{
/* Device is not present, we must examine the Functioning bit */
if (Flags & ACPI_STA_DEVICE_FUNCTIONING)
{
/*
* Device is not present but is "functioning". In this case,
* we will not run _INI, but we continue to examine the children
* of this device.
*
* From the ACPI spec, description of _STA: (Note - no mention
* of whether to run _INI or not on the device in question)
*
* "_STA may return bit 0 clear (not present) with bit 3 set
* (device is functional). This case is used to indicate a valid
* device for which no device driver should be loaded (for example,
* a bridge device.) Children of this device may be present and
* valid. OSPM should continue enumeration below a device whose
* _STA returns this bit combination"
*/
return_ACPI_STATUS (AE_OK);
}
else
{
/*
* Device is not present and is not functioning. We must abort the
* walk of this subtree immediately -- don't look at the children
* of such a device.
*
* From the ACPI spec, description of _INI:
*
* "If the _STA method indicates that the device is not present,
* OSPM will not run the _INI and will not examine the children
* of the device for _INI methods"
*/
return_ACPI_STATUS (AE_CTRL_DEPTH);
}
}
/*
* The device is present or is assumed present if no _STA exists.
* Run the _INI if it exists (not required to exist)
*
* Note: We know there is an _INI within this subtree, but it may not be
* under this particular device, it may be lower in the branch.
*/
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI));
ACPI_MEMSET (Info, 0, sizeof (ACPI_EVALUATE_INFO));
Info->PrefixNode = DeviceNode;
Info->RelativePathname = METHOD_NAME__INI;
Info->Parameters = NULL;
Info->Flags = ACPI_IGNORE_RETURN_VALUE;
Status = AcpiNsEvaluate (Info);
if (ACPI_SUCCESS (Status))
{
WalkInfo->Num_INI++;
}
#ifdef ACPI_DEBUG_OUTPUT
else if (Status != AE_NOT_FOUND)
{
/* Ignore error and move on to next device */
char *ScopeName = AcpiNsGetExternalPathname (Info->Node);
ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution",
ScopeName));
ACPI_FREE (ScopeName);
}
#endif
/* Ignore errors from above */
Status = AE_OK;
/*
* The _INI method has been run if present; call the Global Initialization
* Handler for this device.
*/
if (AcpiGbl_InitHandler)
{
Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI);
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEvExecuteRegMethod (
ACPI_OPERAND_OBJECT *RegionObj,
UINT32 Function)
{
ACPI_EVALUATE_INFO *Info;
ACPI_OPERAND_OBJECT *Args[3];
ACPI_OPERAND_OBJECT *RegionObj2;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (EvExecuteRegMethod);
RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
if (!RegionObj2)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
if (RegionObj2->Extra.Method_REG == NULL)
{
return_ACPI_STATUS (AE_OK);
}
/* Allocate and initialize the evaluation information block */
Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
if (!Info)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Info->PrefixNode = RegionObj2->Extra.Method_REG;
Info->RelativePathname = NULL;
Info->Parameters = Args;
Info->Flags = ACPI_IGNORE_RETURN_VALUE;
/*
* The _REG method has two arguments:
*
* Arg0 - Integer:
* Operation region space ID Same value as RegionObj->Region.SpaceId
*
* Arg1 - Integer:
* connection status 1 for connecting the handler, 0 for disconnecting
* the handler (Passed as a parameter)
*/
Args[0] = AcpiUtCreateIntegerObject ((UINT64) RegionObj->Region.SpaceId);
if (!Args[0])
{
Status = AE_NO_MEMORY;
goto Cleanup1;
}
Args[1] = AcpiUtCreateIntegerObject ((UINT64) Function);
if (!Args[1])
{
Status = AE_NO_MEMORY;
goto Cleanup2;
}
Args[2] = NULL; /* Terminate list */
/* Execute the method, no return value */
ACPI_DEBUG_EXEC (
AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Info->PrefixNode, NULL));
Status = AcpiNsEvaluate (Info);
AcpiUtRemoveReference (Args[1]);
Cleanup2:
AcpiUtRemoveReference (Args[0]);
Cleanup1:
ACPI_FREE (Info);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEvExecuteRegMethod (
ACPI_OPERAND_OBJECT *RegionObj,
UINT32 Function)
{
ACPI_EVALUATE_INFO *Info;
ACPI_OPERAND_OBJECT *Args[3];
ACPI_OPERAND_OBJECT *RegionObj2;
const ACPI_NAME *RegNamePtr = ACPI_CAST_PTR (ACPI_NAME, METHOD_NAME__REG);
ACPI_NAMESPACE_NODE *MethodNode;
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (EvExecuteRegMethod);
if (!AcpiGbl_NamespaceInitialized ||
RegionObj->Region.Handler == NULL)
{
return_ACPI_STATUS (AE_OK);
}
RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
if (!RegionObj2)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/*
* Find any "_REG" method associated with this region definition.
* The method should always be updated as this function may be
* invoked after a namespace change.
*/
Node = RegionObj->Region.Node->Parent;
Status = AcpiNsSearchOneScope (
*RegNamePtr, Node, ACPI_TYPE_METHOD, &MethodNode);
if (ACPI_SUCCESS (Status))
{
/*
* The _REG method is optional and there can be only one per
* region definition. This will be executed when the handler is
* attached or removed.
*/
RegionObj2->Extra.Method_REG = MethodNode;
}
if (RegionObj2->Extra.Method_REG == NULL)
{
return_ACPI_STATUS (AE_OK);
}
/* _REG(DISCONNECT) should be paired with _REG(CONNECT) */
if ((Function == ACPI_REG_CONNECT &&
RegionObj->Common.Flags & AOPOBJ_REG_CONNECTED) ||
(Function == ACPI_REG_DISCONNECT &&
!(RegionObj->Common.Flags & AOPOBJ_REG_CONNECTED)))
{
return_ACPI_STATUS (AE_OK);
}
/* Allocate and initialize the evaluation information block */
Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
if (!Info)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Info->PrefixNode = RegionObj2->Extra.Method_REG;
Info->RelativePathname = NULL;
Info->Parameters = Args;
Info->Flags = ACPI_IGNORE_RETURN_VALUE;
/*
* The _REG method has two arguments:
*
* Arg0 - Integer:
* Operation region space ID Same value as RegionObj->Region.SpaceId
*
* Arg1 - Integer:
* connection status 1 for connecting the handler, 0 for disconnecting
* the handler (Passed as a parameter)
*/
Args[0] = AcpiUtCreateIntegerObject ((UINT64) RegionObj->Region.SpaceId);
if (!Args[0])
{
Status = AE_NO_MEMORY;
goto Cleanup1;
}
Args[1] = AcpiUtCreateIntegerObject ((UINT64) Function);
if (!Args[1])
{
Status = AE_NO_MEMORY;
goto Cleanup2;
}
Args[2] = NULL; /* Terminate list */
/* Execute the method, no return value */
ACPI_DEBUG_EXEC (
AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Info->PrefixNode, NULL));
Status = AcpiNsEvaluate (Info);
AcpiUtRemoveReference (Args[1]);
if (ACPI_FAILURE (Status))
{
goto Cleanup2;
}
if (Function == ACPI_REG_CONNECT)
{
RegionObj->Common.Flags |= AOPOBJ_REG_CONNECTED;
}
else
{
RegionObj->Common.Flags &= ~AOPOBJ_REG_CONNECTED;
}
Cleanup2:
AcpiUtRemoveReference (Args[0]);
Cleanup1:
ACPI_FREE (Info);
return_ACPI_STATUS (Status);
}
static ACPI_STATUS
AcpiEvExecuteRegMethod (
ACPI_OPERAND_OBJECT *RegionObj,
UINT32 Function)
{
ACPI_OPERAND_OBJECT *Params[3];
ACPI_OPERAND_OBJECT *RegionObj2;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE ("EvExecuteRegMethod");
RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
if (!RegionObj2)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
if (RegionObj2->Extra.Method_REG == NULL)
{
return_ACPI_STATUS (AE_OK);
}
/*
* _REG method has two arguments
* Arg0: Integer: Operation region space ID
* Same value as RegionObj->Region.SpaceId
* Arg1: Integer: connection status
* 1 for connecting the handler,
* 0 for disconnecting the handler
* Passed as a parameter
*/
Params[0] = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!Params[0])
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Params[1] = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!Params[1])
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Set up the parameter objects
*/
Params[0]->Integer.Value = RegionObj->Region.SpaceId;
Params[1]->Integer.Value = Function;
Params[2] = NULL;
/*
* Execute the method, no return value
*/
ACPI_DEBUG_EXEC(AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, RegionObj2->Extra.Method_REG, NULL));
Status = AcpiNsEvaluateByHandle (RegionObj2->Extra.Method_REG, Params, NULL);
AcpiUtRemoveReference (Params[1]);
Cleanup:
AcpiUtRemoveReference (Params[0]);
return_ACPI_STATUS (Status);
}