ACPI_STATUS
AcpiNsSimpleRepair (
ACPI_EVALUATE_INFO *Info,
UINT32 ExpectedBtypes,
UINT32 PackageIndex,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_OPERAND_OBJECT *NewObject = NULL;
ACPI_STATUS Status;
const ACPI_SIMPLE_REPAIR_INFO *Predefined;
ACPI_FUNCTION_NAME (NsSimpleRepair);
/*
* Special repairs for certain names that are in the repair table.
* Check if this name is in the list of repairable names.
*/
Predefined = AcpiNsMatchSimpleRepair (Info->Node,
Info->ReturnBtype, PackageIndex);
if (Predefined)
{
if (!ReturnObject)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
ACPI_WARN_ALWAYS, "Missing expected return value"));
}
Status = Predefined->ObjectConverter (Info->Node, ReturnObject,
&NewObject);
if (ACPI_FAILURE (Status))
{
/* A fatal error occurred during a conversion */
ACPI_EXCEPTION ((AE_INFO, Status,
"During return object analysis"));
return (Status);
}
if (NewObject)
{
goto ObjectRepaired;
}
}
/*
* Do not perform simple object repair unless the return type is not
* expected.
*/
if (Info->ReturnBtype & ExpectedBtypes)
{
return (AE_OK);
}
/*
* At this point, we know that the type of the returned object was not
* one of the expected types for this predefined name. Attempt to
* repair the object by converting it to one of the expected object
* types for this predefined name.
*/
/*
* If there is no return value, check if we require a return value for
* this predefined name. Either one return value is expected, or none,
* for both methods and other objects.
*
* Try to fix if there was no return object. Warning if failed to fix.
*/
if (!ReturnObject)
{
if (ExpectedBtypes && (!(ExpectedBtypes & ACPI_RTYPE_NONE)))
{
if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
ACPI_WARN_ALWAYS, "Found unexpected NULL package element"));
Status = AcpiNsRepairNullElement (Info, ExpectedBtypes,
PackageIndex, ReturnObjectPtr);
if (ACPI_SUCCESS (Status))
{
return (AE_OK); /* Repair was successful */
}
}
else
{
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
ACPI_WARN_ALWAYS, "Missing expected return value"));
}
return (AE_AML_NO_RETURN_VALUE);
}
}
if (ExpectedBtypes & ACPI_RTYPE_INTEGER)
{
Status = AcpiNsConvertToInteger (ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
goto ObjectRepaired;
}
}
if (ExpectedBtypes & ACPI_RTYPE_STRING)
{
Status = AcpiNsConvertToString (ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
goto ObjectRepaired;
}
}
if (ExpectedBtypes & ACPI_RTYPE_BUFFER)
{
Status = AcpiNsConvertToBuffer (ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
goto ObjectRepaired;
}
}
if (ExpectedBtypes & ACPI_RTYPE_PACKAGE)
{
/*
* A package is expected. We will wrap the existing object with a
* new package object. It is often the case that if a variable-length
* package is required, but there is only a single object needed, the
* BIOS will return that object instead of wrapping it with a Package
* object. Note: after the wrapping, the package will be validated
* for correct contents (expected object type or types).
*/
Status = AcpiNsWrapWithPackage (Info, ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
/*
* The original object just had its reference count
* incremented for being inserted into the new package.
*/
*ReturnObjectPtr = NewObject; /* New Package object */
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
}
/* We cannot repair this object */
return (AE_AML_OPERAND_TYPE);
ObjectRepaired:
/* Object was successfully repaired */
if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT)
{
/*
* The original object is a package element. We need to
* decrement the reference count of the original object,
* for removing it from the package.
*
* However, if the original object was just wrapped with a
* package object as part of the repair, we don't need to
* change the reference count.
*/
if (!(Info->ReturnFlags & ACPI_OBJECT_WRAPPED))
{
NewObject->Common.ReferenceCount =
ReturnObject->Common.ReferenceCount;
if (ReturnObject->Common.ReferenceCount > 1)
{
ReturnObject->Common.ReferenceCount--;
}
}
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at Package index %u\n",
Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject),
AcpiUtGetObjectTypeName (NewObject), PackageIndex));
}
else
{
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject),
AcpiUtGetObjectTypeName (NewObject)));
}
/* Delete old object, install the new return object */
AcpiUtRemoveReference (ReturnObject);
*ReturnObjectPtr = NewObject;
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
ACPI_STATUS
AcpiNsCheckPackage (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
const ACPI_PREDEFINED_INFO *Package;
ACPI_OPERAND_OBJECT **Elements;
ACPI_STATUS Status = AE_OK;
UINT32 ExpectedCount;
UINT32 Count;
UINT32 i;
ACPI_FUNCTION_NAME (NsCheckPackage);
/* The package info for this name is in the next table entry */
Package = Data->Predefined + 1;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"%s Validating return Package of Type %X, Count %X\n",
Data->Pathname, Package->RetInfo.Type, ReturnObject->Package.Count));
/*
* For variable-length Packages, we can safely remove all embedded
* and trailing NULL package elements
*/
AcpiNsRemoveNullElements (Data, Package->RetInfo.Type, ReturnObject);
/* Extract package count and elements array */
Elements = ReturnObject->Package.Elements;
Count = ReturnObject->Package.Count;
/*
* Most packages must have at least one element. The only exception
* is the variable-length package (ACPI_PTYPE1_VAR).
*/
if (!Count)
{
if (Package->RetInfo.Type == ACPI_PTYPE1_VAR)
{
return (AE_OK);
}
ACPI_WARN_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
"Return Package has no elements (empty)"));
return (AE_AML_OPERAND_VALUE);
}
/*
* Decode the type of the expected package contents
*
* PTYPE1 packages contain no subpackages
* PTYPE2 packages contain sub-packages
*/
switch (Package->RetInfo.Type)
{
case ACPI_PTYPE1_FIXED:
/*
* The package count is fixed and there are no sub-packages
*
* If package is too small, exit.
* If package is larger than expected, issue warning but continue
*/
ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
if (Count < ExpectedCount)
{
goto PackageTooSmall;
}
else if (Count > ExpectedCount)
{
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Return Package is larger than needed - "
"found %u, expected %u\n",
Data->Pathname, Count, ExpectedCount));
}
/* Validate all elements of the returned package */
Status = AcpiNsCheckPackageElements (Data, Elements,
Package->RetInfo.ObjectType1, Package->RetInfo.Count1,
Package->RetInfo.ObjectType2, Package->RetInfo.Count2, 0);
break;
case ACPI_PTYPE1_VAR:
/*
* The package count is variable, there are no sub-packages, and all
* elements must be of the same type
*/
for (i = 0; i < Count; i++)
{
Status = AcpiNsCheckObjectType (Data, Elements,
Package->RetInfo.ObjectType1, i);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Elements++;
}
break;
case ACPI_PTYPE1_OPTION:
/*
* The package count is variable, there are no sub-packages. There are
* a fixed number of required elements, and a variable number of
* optional elements.
*
* Check if package is at least as large as the minimum required
*/
ExpectedCount = Package->RetInfo3.Count;
if (Count < ExpectedCount)
{
goto PackageTooSmall;
}
/* Variable number of sub-objects */
for (i = 0; i < Count; i++)
{
if (i < Package->RetInfo3.Count)
{
/* These are the required package elements (0, 1, or 2) */
Status = AcpiNsCheckObjectType (Data, Elements,
Package->RetInfo3.ObjectType[i], i);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
else
{
/* These are the optional package elements */
Status = AcpiNsCheckObjectType (Data, Elements,
Package->RetInfo3.TailObjectType, i);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
Elements++;
}
break;
case ACPI_PTYPE2_REV_FIXED:
/* First element is the (Integer) revision */
Status = AcpiNsCheckObjectType (Data, Elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Elements++;
Count--;
/* Examine the sub-packages */
Status = AcpiNsCheckPackageList (Data, Package, Elements, Count);
break;
case ACPI_PTYPE2_PKG_COUNT:
/* First element is the (Integer) count of sub-packages to follow */
Status = AcpiNsCheckObjectType (Data, Elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* Count cannot be larger than the parent package length, but allow it
* to be smaller. The >= accounts for the Integer above.
*/
ExpectedCount = (UINT32) (*Elements)->Integer.Value;
if (ExpectedCount >= Count)
{
goto PackageTooSmall;
}
Count = ExpectedCount;
Elements++;
/* Examine the sub-packages */
Status = AcpiNsCheckPackageList (Data, Package, Elements, Count);
break;
case ACPI_PTYPE2:
case ACPI_PTYPE2_FIXED:
case ACPI_PTYPE2_MIN:
case ACPI_PTYPE2_COUNT:
case ACPI_PTYPE2_FIX_VAR:
/*
* These types all return a single Package that consists of a
* variable number of sub-Packages.
*
* First, ensure that the first element is a sub-Package. If not,
* the BIOS may have incorrectly returned the object as a single
* package instead of a Package of Packages (a common error if
* there is only one entry). We may be able to repair this by
* wrapping the returned Package with a new outer Package.
*/
if (*Elements && ((*Elements)->Common.Type != ACPI_TYPE_PACKAGE))
{
/* Create the new outer package and populate it */
Status = AcpiNsWrapWithPackage (Data, ReturnObject, ReturnObjectPtr);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* Update locals to point to the new package (of 1 element) */
ReturnObject = *ReturnObjectPtr;
Elements = ReturnObject->Package.Elements;
Count = 1;
}
/* Examine the sub-packages */
Status = AcpiNsCheckPackageList (Data, Package, Elements, Count);
break;
default:
/* Should not get here if predefined info table is correct */
ACPI_WARN_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
"Invalid internal return type in table entry: %X",
Package->RetInfo.Type));
return (AE_AML_INTERNAL);
}
return (Status);
PackageTooSmall:
/* Error exit for the case with an incorrect package count */
ACPI_WARN_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
"Return Package is too small - found %u elements, expected %u",
Count, ExpectedCount));
return (AE_AML_OPERAND_VALUE);
}
ACPI_STATUS
AcpiNsRepairObject (
ACPI_PREDEFINED_DATA *Data,
UINT32 ExpectedBtypes,
UINT32 PackageIndex,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_OPERAND_OBJECT *NewObject;
ACPI_STATUS Status;
ACPI_FUNCTION_NAME (NsRepairObject);
/*
* At this point, we know that the type of the returned object was not
* one of the expected types for this predefined name. Attempt to
* repair the object by converting it to one of the expected object
* types for this predefined name.
*/
if (ExpectedBtypes & ACPI_RTYPE_INTEGER)
{
Status = AcpiNsConvertToInteger (ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
goto ObjectRepaired;
}
}
if (ExpectedBtypes & ACPI_RTYPE_STRING)
{
Status = AcpiNsConvertToString (ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
goto ObjectRepaired;
}
}
if (ExpectedBtypes & ACPI_RTYPE_BUFFER)
{
Status = AcpiNsConvertToBuffer (ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
goto ObjectRepaired;
}
}
if (ExpectedBtypes & ACPI_RTYPE_PACKAGE)
{
/*
* A package is expected. We will wrap the existing object with a
* new package object. It is often the case that if a variable-length
* package is required, but there is only a single object needed, the
* BIOS will return that object instead of wrapping it with a Package
* object. Note: after the wrapping, the package will be validated
* for correct contents (expected object type or types).
*/
Status = AcpiNsWrapWithPackage (Data, ReturnObject, &NewObject);
if (ACPI_SUCCESS (Status))
{
/*
* The original object just had its reference count
* incremented for being inserted into the new package.
*/
*ReturnObjectPtr = NewObject; /* New Package object */
Data->Flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
}
/* We cannot repair this object */
return (AE_AML_OPERAND_TYPE);
ObjectRepaired:
/* Object was successfully repaired */
if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT)
{
/*
* The original object is a package element. We need to
* decrement the reference count of the original object,
* for removing it from the package.
*
* However, if the original object was just wrapped with a
* package object as part of the repair, we don't need to
* change the reference count.
*/
if (!(Data->Flags & ACPI_OBJECT_WRAPPED))
{
NewObject->Common.ReferenceCount =
ReturnObject->Common.ReferenceCount;
if (ReturnObject->Common.ReferenceCount > 1)
{
ReturnObject->Common.ReferenceCount--;
}
}
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at Package index %u\n",
Data->Pathname, AcpiUtGetObjectTypeName (ReturnObject),
AcpiUtGetObjectTypeName (NewObject), PackageIndex));
}
else
{
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
Data->Pathname, AcpiUtGetObjectTypeName (ReturnObject),
AcpiUtGetObjectTypeName (NewObject)));
}
/* Delete old object, install the new return object */
AcpiUtRemoveReference (ReturnObject);
*ReturnObjectPtr = NewObject;
Data->Flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}