static ACPI_STATUS
AcpiDbWalkForPredefinedNames (
ACPI_HANDLE ObjHandle,
UINT32 NestingLevel,
void *Context,
void **ReturnValue)
{
ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
UINT32 *Count = (UINT32 *) Context;
const ACPI_PREDEFINED_INFO *Predefined;
const ACPI_PREDEFINED_INFO *Package = NULL;
char *Pathname;
char StringBuffer[48];
Predefined = AcpiUtMatchPredefinedMethod (Node->Name.Ascii);
if (!Predefined)
{
return (AE_OK);
}
Pathname = AcpiNsGetExternalPathname (Node);
if (!Pathname)
{
return (AE_OK);
}
/* If method returns a package, the info is in the next table entry */
if (Predefined->Info.ExpectedBtypes & ACPI_RTYPE_PACKAGE)
{
Package = Predefined + 1;
}
AcpiUtGetExpectedReturnTypes (StringBuffer,
Predefined->Info.ExpectedBtypes);
AcpiOsPrintf ("%-32s Arguments %X, Return Types: %s", Pathname,
METHOD_GET_ARG_COUNT (Predefined->Info.ArgumentList),
StringBuffer);
if (Package)
{
AcpiOsPrintf (" (PkgType %2.2X, ObjType %2.2X, Count %2.2X)",
Package->RetInfo.Type, Package->RetInfo.ObjectType1,
Package->RetInfo.Count1);
}
AcpiOsPrintf("\n");
/* Check that the declared argument count matches the ACPI spec */
AcpiNsCheckAcpiCompliance (Pathname, Node, Predefined);
ACPI_FREE (Pathname);
(*Count)++;
return (AE_OK);
}
static acpi_status
acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
u32 *count = (u32 *)context;
const union acpi_predefined_info *predefined;
const union acpi_predefined_info *package = NULL;
char *pathname;
char string_buffer[48];
predefined = acpi_ut_match_predefined_method(node->name.ascii);
if (!predefined) {
return (AE_OK);
}
pathname = acpi_ns_get_normalized_pathname(node, TRUE);
if (!pathname) {
return (AE_OK);
}
/* If method returns a package, the info is in the next table entry */
if (predefined->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
package = predefined + 1;
}
acpi_ut_get_expected_return_types(string_buffer,
predefined->info.expected_btypes);
acpi_os_printf("%-32s Arguments %X, Return Types: %s", pathname,
METHOD_GET_ARG_COUNT(predefined->info.argument_list),
string_buffer);
if (package) {
acpi_os_printf(" (PkgType %2.2X, ObjType %2.2X, Count %2.2X)",
package->ret_info.type,
package->ret_info.object_type1,
package->ret_info.count1);
}
acpi_os_printf("\n");
/* Check that the declared argument count matches the ACPI spec */
acpi_ns_check_acpi_compliance(pathname, node, predefined);
ACPI_FREE(pathname);
(*count)++;
return (AE_OK);
}
static UINT32
AcpiUtGetArgumentTypes (
char *Buffer,
UINT16 ArgumentTypes)
{
UINT16 ThisArgumentType;
UINT16 SubIndex;
UINT16 ArgCount;
UINT32 i;
*Buffer = 0;
SubIndex = 2;
/* First field in the types list is the count of args to follow */
ArgCount = METHOD_GET_ARG_COUNT (ArgumentTypes);
if (ArgCount > METHOD_PREDEF_ARGS_MAX)
{
printf ("**** Invalid argument count (%u) "
"in predefined info structure\n", ArgCount);
return (ArgCount);
}
/* Get each argument from the list, convert to ascii, store to buffer */
for (i = 0; i < ArgCount; i++)
{
ThisArgumentType = METHOD_GET_NEXT_TYPE (ArgumentTypes);
if (!ThisArgumentType || (ThisArgumentType > METHOD_MAX_ARG_TYPE))
{
printf ("**** Invalid argument type (%u) "
"in predefined info structure\n", ThisArgumentType);
return (ArgCount);
}
strcat (Buffer, UtExternalTypeNames[ThisArgumentType] + SubIndex);
SubIndex = 0;
}
return (ArgCount);
}
static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types)
{
u16 this_argument_type;
u16 sub_index;
u16 arg_count;
u32 i;
*buffer = 0;
sub_index = 2;
/* First field in the types list is the count of args to follow */
arg_count = METHOD_GET_ARG_COUNT(argument_types);
if (arg_count > METHOD_PREDEF_ARGS_MAX) {
printf("**** Invalid argument count (%u) "
"in predefined info structure\n", arg_count);
return (arg_count);
}
/* Get each argument from the list, convert to ascii, store to buffer */
for (i = 0; i < arg_count; i++) {
this_argument_type = METHOD_GET_NEXT_TYPE(argument_types);
if (!this_argument_type
|| (this_argument_type > METHOD_MAX_ARG_TYPE)) {
printf("**** Invalid argument type (%u) "
"in predefined info structure\n",
this_argument_type);
return (arg_count);
}
strcat(buffer,
ut_external_type_names[this_argument_type] + sub_index);
sub_index = 0;
}
return (arg_count);
}
void
AcpiNsCheckArgumentTypes (
ACPI_EVALUATE_INFO *Info)
{
UINT16 ArgTypeList;
UINT8 ArgCount;
UINT8 ArgType;
UINT8 UserArgType;
UINT32 i;
/* If not a predefined name, cannot typecheck args */
if (!Info->Predefined)
{
return;
}
ArgTypeList = Info->Predefined->Info.ArgumentList;
ArgCount = METHOD_GET_ARG_COUNT (ArgTypeList);
/* Typecheck all arguments */
for (i = 0; ((i < ArgCount) && (i < Info->ParamCount)); i++)
{
ArgType = METHOD_GET_NEXT_TYPE (ArgTypeList);
UserArgType = Info->Parameters[i]->Common.Type;
if (UserArgType != ArgType)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, ACPI_WARN_ALWAYS,
"Argument #%u type mismatch - "
"Found [%s], ACPI requires [%s]", (i + 1),
AcpiUtGetTypeName (UserArgType),
AcpiUtGetTypeName (ArgType)));
}
}
}
BOOLEAN
ApCheckForPredefinedMethod (
ACPI_PARSE_OBJECT *Op,
ASL_METHOD_INFO *MethodInfo)
{
UINT32 Index;
UINT32 RequiredArgCount;
const ACPI_PREDEFINED_INFO *ThisName;
/* Check for a match against the predefined name list */
Index = ApCheckForPredefinedName (Op, Op->Asl.NameSeg);
switch (Index)
{
case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */
case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */
case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */
/* Just return, nothing to do */
return (FALSE);
case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */
Gbl_ReservedMethods++;
/* NumArguments must be zero for all _Lxx/_Exx/_Wxx/_Qxx methods */
if (MethodInfo->NumArguments != 0)
{
sprintf (MsgBuffer, "%s requires %u", Op->Asl.ExternalName, 0);
AslError (ASL_WARNING, ASL_MSG_RESERVED_ARG_COUNT_HI, Op,
MsgBuffer);
}
break;
default:
/*
* Matched a predefined method name - validate the ASL-defined
* argument count against the ACPI specification.
*
* Some methods are allowed to have a "minimum" number of args
* (_SCP) because their definition in ACPI has changed over time.
*/
Gbl_ReservedMethods++;
ThisName = &AcpiGbl_PredefinedMethods[Index];
RequiredArgCount = METHOD_GET_ARG_COUNT (ThisName->Info.ArgumentList);
if (MethodInfo->NumArguments != RequiredArgCount)
{
sprintf (MsgBuffer, "%4.4s requires %u",
ThisName->Info.Name, RequiredArgCount);
if (MethodInfo->NumArguments < RequiredArgCount)
{
AslError (ASL_WARNING, ASL_MSG_RESERVED_ARG_COUNT_LO, Op,
MsgBuffer);
}
else if ((MethodInfo->NumArguments > RequiredArgCount) &&
!(ThisName->Info.ArgumentList & ARG_COUNT_IS_MINIMUM))
{
AslError (ASL_WARNING, ASL_MSG_RESERVED_ARG_COUNT_HI, Op,
MsgBuffer);
}
}
/*
* Check if method returns no value, but the predefined name is
* required to return a value
*/
if (MethodInfo->NumReturnNoValue &&
ThisName->Info.ExpectedBtypes)
{
AcpiUtGetExpectedReturnTypes (StringBuffer,
ThisName->Info.ExpectedBtypes);
sprintf (MsgBuffer, "%s required for %4.4s",
StringBuffer, ThisName->Info.Name);
AslError (ASL_WARNING, ASL_MSG_RESERVED_RETURN_VALUE, Op,
MsgBuffer);
}
break;
}
return (TRUE);
}
void
ApCheckForPredefinedObject (
ACPI_PARSE_OBJECT *Op,
char *Name)
{
UINT32 Index;
ACPI_PARSE_OBJECT *ObjectOp;
const ACPI_PREDEFINED_INFO *ThisName;
/*
* Check for a real predefined name -- not a resource descriptor name
* or a predefined scope name
*/
Index = ApCheckForPredefinedName (Op, Name);
switch (Index)
{
case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */
case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */
case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */
/* Nothing to do */
return;
case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */
/*
* These names must be control methods, by definition in ACPI spec.
* Also because they are defined to return no value. None of them
* require any arguments.
*/
AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op,
"with zero arguments");
return;
default:
break;
}
/* A standard predefined ACPI name */
/*
* If this predefined name requires input arguments, then
* it must be implemented as a control method
*/
ThisName = &AcpiGbl_PredefinedMethods[Index];
if (METHOD_GET_ARG_COUNT (ThisName->Info.ArgumentList) > 0)
{
AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op,
"with arguments");
return;
}
/*
* If no return value is expected from this predefined name, then
* it follows that it must be implemented as a control method
* (with zero args, because the args > 0 case was handled above)
* Examples are: _DIS, _INI, _IRC, _OFF, _ON, _PSx
*/
if (!ThisName->Info.ExpectedBtypes)
{
AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op,
"with zero arguments");
return;
}
/* Typecheck the actual object, it is the next argument */
ObjectOp = Op->Asl.Child->Asl.Next;
ApCheckObjectType (ThisName->Info.Name, Op->Asl.Child->Asl.Next,
ThisName->Info.ExpectedBtypes, ACPI_NOT_PACKAGE_ELEMENT);
/* For packages, check the individual package elements */
if (ObjectOp->Asl.ParseOpcode == PARSEOP_PACKAGE)
{
ApCheckPackage (ObjectOp, ThisName);
}
}
static ACPI_STATUS
AcpiDbWalkForExecute (
ACPI_HANDLE ObjHandle,
UINT32 NestingLevel,
void *Context,
void **ReturnValue)
{
ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
ACPI_DB_EXECUTE_WALK *Info = (ACPI_DB_EXECUTE_WALK *) Context;
char *Pathname;
const ACPI_PREDEFINED_INFO *Predefined;
ACPI_DEVICE_INFO *ObjInfo;
ACPI_OBJECT_LIST ParamObjects;
ACPI_OBJECT Params[ACPI_METHOD_NUM_ARGS];
ACPI_OBJECT *ThisParam;
ACPI_BUFFER ReturnObj;
ACPI_STATUS Status;
UINT16 ArgTypeList;
UINT8 ArgCount;
UINT8 ArgType;
UINT32 i;
/* The name must be a predefined ACPI name */
Predefined = AcpiUtMatchPredefinedMethod (Node->Name.Ascii);
if (!Predefined)
{
return (AE_OK);
}
if (Node->Type == ACPI_TYPE_LOCAL_SCOPE)
{
return (AE_OK);
}
Pathname = AcpiNsGetExternalPathname (Node);
if (!Pathname)
{
return (AE_OK);
}
/* Get the object info for number of method parameters */
Status = AcpiGetObjectInfo (ObjHandle, &ObjInfo);
if (ACPI_FAILURE (Status))
{
return (Status);
}
ParamObjects.Count = 0;
ParamObjects.Pointer = NULL;
if (ObjInfo->Type == ACPI_TYPE_METHOD)
{
/* Setup default parameters (with proper types) */
ArgTypeList = Predefined->Info.ArgumentList;
ArgCount = METHOD_GET_ARG_COUNT (ArgTypeList);
/*
* Setup the ACPI-required number of arguments, regardless of what
* the actual method defines. If there is a difference, then the
* method is wrong and a warning will be issued during execution.
*/
ThisParam = Params;
for (i = 0; i < ArgCount; i++)
{
ArgType = METHOD_GET_NEXT_TYPE (ArgTypeList);
ThisParam->Type = ArgType;
switch (ArgType)
{
case ACPI_TYPE_INTEGER:
ThisParam->Integer.Value = 1;
break;
case ACPI_TYPE_STRING:
ThisParam->String.Pointer = __UNCONST(
"This is the default argument string");
ThisParam->String.Length = ACPI_STRLEN (ThisParam->String.Pointer);
break;
case ACPI_TYPE_BUFFER:
ThisParam->Buffer.Pointer = (UINT8 *) Params; /* just a garbage buffer */
ThisParam->Buffer.Length = 48;
break;
case ACPI_TYPE_PACKAGE:
ThisParam->Package.Elements = NULL;
ThisParam->Package.Count = 0;
break;
default:
AcpiOsPrintf ("%s: Unsupported argument type: %u\n",
Pathname, ArgType);
break;
}
ThisParam++;
}
ParamObjects.Count = ArgCount;
ParamObjects.Pointer = Params;
}
ACPI_FREE (ObjInfo);
ReturnObj.Pointer = NULL;
ReturnObj.Length = ACPI_ALLOCATE_BUFFER;
/* Do the actual method execution */
AcpiGbl_MethodExecuting = TRUE;
Status = AcpiEvaluateObject (Node, NULL, &ParamObjects, &ReturnObj);
AcpiOsPrintf ("%-32s returned %s\n", Pathname, AcpiFormatException (Status));
AcpiGbl_MethodExecuting = FALSE;
ACPI_FREE (Pathname);
/* Ignore status from method execution */
Status = AE_OK;
/* Update count, check if we have executed enough methods */
Info->Count++;
if (Info->Count >= Info->MaxCount)
{
Status = AE_CTRL_TERMINATE;
}
return (Status);
}
static acpi_status
acpi_db_evaluate_one_predefined_name(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
struct acpi_db_execute_walk *info =
(struct acpi_db_execute_walk *)context;
char *pathname;
const union acpi_predefined_info *predefined;
struct acpi_device_info *obj_info;
struct acpi_object_list param_objects;
union acpi_object params[ACPI_METHOD_NUM_ARGS];
union acpi_object *this_param;
struct acpi_buffer return_obj;
acpi_status status;
u16 arg_type_list;
u8 arg_count;
u8 arg_type;
u32 i;
/* The name must be a predefined ACPI name */
predefined = acpi_ut_match_predefined_method(node->name.ascii);
if (!predefined) {
return (AE_OK);
}
if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
return (AE_OK);
}
pathname = acpi_ns_get_normalized_pathname(node, TRUE);
if (!pathname) {
return (AE_OK);
}
/* Get the object info for number of method parameters */
status = acpi_get_object_info(obj_handle, &obj_info);
if (ACPI_FAILURE(status)) {
ACPI_FREE(pathname);
return (status);
}
param_objects.count = 0;
param_objects.pointer = NULL;
if (obj_info->type == ACPI_TYPE_METHOD) {
/* Setup default parameters (with proper types) */
arg_type_list = predefined->info.argument_list;
arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
/*
* Setup the ACPI-required number of arguments, regardless of what
* the actual method defines. If there is a difference, then the
* method is wrong and a warning will be issued during execution.
*/
this_param = params;
for (i = 0; i < arg_count; i++) {
arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
this_param->type = arg_type;
switch (arg_type) {
case ACPI_TYPE_INTEGER:
this_param->integer.value = 1;
break;
case ACPI_TYPE_STRING:
this_param->string.pointer =
"This is the default argument string";
this_param->string.length =
strlen(this_param->string.pointer);
break;
case ACPI_TYPE_BUFFER:
this_param->buffer.pointer = (u8 *)params; /* just a garbage buffer */
this_param->buffer.length = 48;
break;
case ACPI_TYPE_PACKAGE:
this_param->package.elements = NULL;
this_param->package.count = 0;
break;
default:
acpi_os_printf
("%s: Unsupported argument type: %u\n",
pathname, arg_type);
break;
}
this_param++;
}
param_objects.count = arg_count;
param_objects.pointer = params;
}
ACPI_FREE(obj_info);
return_obj.pointer = NULL;
return_obj.length = ACPI_ALLOCATE_BUFFER;
/* Do the actual method execution */
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(node, NULL, ¶m_objects, &return_obj);
acpi_os_printf("%-32s returned %s\n",
pathname, acpi_format_exception(status));
acpi_gbl_method_executing = FALSE;
ACPI_FREE(pathname);
/* Ignore status from method execution */
status = AE_OK;
/* Update count, check if we have executed enough methods */
info->count++;
if (info->count >= info->max_count) {
status = AE_CTRL_TERMINATE;
}
return (status);
}
void
AcpiNsCheckArgumentCount (
char *Pathname,
ACPI_NAMESPACE_NODE *Node,
UINT32 UserParamCount,
const ACPI_PREDEFINED_INFO *Predefined)
{
UINT32 AmlParamCount;
UINT32 RequiredParamCount;
if (!Predefined)
{
/*
* Not a predefined name. Check the incoming user argument count
* against the count that is specified in the method/object.
*/
if (Node->Type != ACPI_TYPE_METHOD)
{
if (UserParamCount)
{
ACPI_INFO_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"%u arguments were passed to a non-method ACPI object (%s)",
UserParamCount, AcpiUtGetTypeName (Node->Type)));
}
return;
}
/*
* This is a control method. Check the parameter count.
* We can only check the incoming argument count against the
* argument count declared for the method in the ASL/AML.
*
* Emit a message if too few or too many arguments have been passed
* by the caller.
*
* Note: Too many arguments will not cause the method to
* fail. However, the method will fail if there are too few
* arguments and the method attempts to use one of the missing ones.
*/
AmlParamCount = Node->Object->Method.ParamCount;
if (UserParamCount < AmlParamCount)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Insufficient arguments - "
"Caller passed %u, method requires %u",
UserParamCount, AmlParamCount));
}
else if (UserParamCount > AmlParamCount)
{
ACPI_INFO_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Excess arguments - "
"Caller passed %u, method requires %u",
UserParamCount, AmlParamCount));
}
return;
}
/*
* This is a predefined name. Validate the user-supplied parameter
* count against the ACPI specification. We don't validate against
* the method itself because what is important here is that the
* caller is in conformance with the spec. (The arg count for the
* method was checked against the ACPI spec earlier.)
*
* Some methods are allowed to have a "minimum" number of args (_SCP)
* because their definition in ACPI has changed over time.
*/
RequiredParamCount = METHOD_GET_ARG_COUNT (Predefined->Info.ArgumentList);
if (UserParamCount < RequiredParamCount)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Insufficient arguments - "
"Caller passed %u, ACPI requires %u",
UserParamCount, RequiredParamCount));
}
else if ((UserParamCount > RequiredParamCount) &&
!(Predefined->Info.ArgumentList & ARG_COUNT_IS_MINIMUM))
{
ACPI_INFO_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Excess arguments - "
"Caller passed %u, ACPI requires %u",
UserParamCount, RequiredParamCount));
}
}
void
AcpiNsCheckAcpiCompliance (
char *Pathname,
ACPI_NAMESPACE_NODE *Node,
const ACPI_PREDEFINED_INFO *Predefined)
{
UINT32 AmlParamCount;
UINT32 RequiredParamCount;
if (!Predefined)
{
return;
}
/* Get the ACPI-required arg count from the predefined info table */
RequiredParamCount = METHOD_GET_ARG_COUNT (Predefined->Info.ArgumentList);
/*
* If this object is not a control method, we can check if the ACPI
* spec requires that it be a method.
*/
if (Node->Type != ACPI_TYPE_METHOD)
{
if (RequiredParamCount > 0)
{
/* Object requires args, must be implemented as a method */
ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Object (%s) must be a control method with %u arguments",
AcpiUtGetTypeName (Node->Type), RequiredParamCount));
}
else if (!RequiredParamCount && !Predefined->Info.ExpectedBtypes)
{
/* Object requires no args and no return value, must be a method */
ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Object (%s) must be a control method "
"with no arguments and no return value",
AcpiUtGetTypeName (Node->Type)));
}
return;
}
/*
* This is a control method.
* Check that the ASL/AML-defined parameter count for this method
* matches the ACPI-required parameter count
*
* Some methods are allowed to have a "minimum" number of args (_SCP)
* because their definition in ACPI has changed over time.
*
* Note: These are BIOS errors in the declaration of the object
*/
AmlParamCount = Node->Object->Method.ParamCount;
if (AmlParamCount < RequiredParamCount)
{
ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Insufficient arguments - "
"ASL declared %u, ACPI requires %u",
AmlParamCount, RequiredParamCount));
}
else if ((AmlParamCount > RequiredParamCount) &&
!(Predefined->Info.ArgumentList & ARG_COUNT_IS_MINIMUM))
{
ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
"Excess arguments - "
"ASL declared %u, ACPI requires %u",
AmlParamCount, RequiredParamCount));
}
}
