diff options
Diffstat (limited to 'namespace/nsrepair.c')
| -rw-r--r-- | namespace/nsrepair.c | 478 |
1 files changed, 405 insertions, 73 deletions
diff --git a/namespace/nsrepair.c b/namespace/nsrepair.c index 3e3a231..5c402df 100644 --- a/namespace/nsrepair.c +++ b/namespace/nsrepair.c @@ -119,7 +119,6 @@ #include "accommon.h" #include "acnamesp.h" #include "acinterp.h" -#include "acpredef.h" #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME ("nsrepair") @@ -127,6 +126,54 @@ /******************************************************************************* * + * This module attempts to repair or convert objects returned by the + * predefined methods to an object type that is expected, as per the ACPI + * specification. The need for this code is dictated by the many machines that + * return incorrect types for the standard predefined methods. Performing these + * conversions here, in one place, eliminates the need for individual ACPI + * device drivers to do the same. Note: Most of these conversions are different + * than the internal object conversion routines used for implicit object + * conversion. + * + * The following conversions can be performed as necessary: + * + * Integer -> String + * Integer -> Buffer + * String -> Integer + * String -> Buffer + * Buffer -> Integer + * Buffer -> String + * Buffer -> Package of Integers + * Package -> Package of one Package + * + ******************************************************************************/ + + +/* Local prototypes */ + +static ACPI_STATUS +AcpiNsConvertToInteger ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject); + +static ACPI_STATUS +AcpiNsConvertToString ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject); + +static ACPI_STATUS +AcpiNsConvertToBuffer ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject); + +static ACPI_STATUS +AcpiNsConvertToPackage ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject); + + +/******************************************************************************* + * * FUNCTION: AcpiNsRepairObject * * PARAMETERS: Data - Pointer to validation data structure @@ -153,35 +200,230 @@ AcpiNsRepairObject ( { ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; ACPI_OPERAND_OBJECT *NewObject; - ACPI_SIZE Length; 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. Only a limited number of repairs are possible. + * 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) + { + Status = AcpiNsConvertToPackage (ReturnObject, &NewObject); + if (ACPI_SUCCESS (Status)) + { + goto ObjectRepaired; + } + } + + /* We cannot repair this object */ + + return (AE_AML_OPERAND_TYPE); + + +ObjectRepaired: + + /* Object was successfully repaired */ + + /* + * If the original object is a package element, we need to: + * 1. Set the reference count of the new object to match the + * reference count of the old object. + * 2. Decrement the reference count of the original object. */ - switch (ReturnObject->Common.Type) + if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT) + { + 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 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); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiNsConvertToInteger + * + * PARAMETERS: OriginalObject - Object to be converted + * ReturnObject - Where the new converted object is returned + * + * RETURN: Status. AE_OK if conversion was successful. + * + * DESCRIPTION: Attempt to convert a String/Buffer object to an Integer. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiNsConvertToInteger ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject) +{ + ACPI_OPERAND_OBJECT *NewObject; + ACPI_STATUS Status; + UINT64 Value = 0; + UINT32 i; + + + switch (OriginalObject->Common.Type) { + case ACPI_TYPE_STRING: + + /* String-to-Integer conversion */ + + Status = AcpiUtStrtoul64 (OriginalObject->String.Pointer, + ACPI_ANY_BASE, &Value); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + break; + case ACPI_TYPE_BUFFER: - /* Does the method/object legally return a string? */ + /* Buffer-to-Integer conversion. Max buffer size is 64 bits. */ - if (!(ExpectedBtypes & ACPI_RTYPE_STRING)) + if (OriginalObject->Buffer.Length > 8) { return (AE_AML_OPERAND_TYPE); } + /* Extract each buffer byte to create the integer */ + + for (i = 0; i < OriginalObject->Buffer.Length; i++) + { + Value |= ((UINT64) OriginalObject->Buffer.Pointer[i] << (i * 8)); + } + break; + + default: + return (AE_AML_OPERAND_TYPE); + } + + NewObject = AcpiUtCreateIntegerObject (Value); + if (!NewObject) + { + return (AE_NO_MEMORY); + } + + *ReturnObject = NewObject; + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiNsConvertToString + * + * PARAMETERS: OriginalObject - Object to be converted + * ReturnObject - Where the new converted object is returned + * + * RETURN: Status. AE_OK if conversion was successful. + * + * DESCRIPTION: Attempt to convert a Integer/Buffer object to a String. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiNsConvertToString ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject) +{ + ACPI_OPERAND_OBJECT *NewObject; + ACPI_SIZE Length; + ACPI_STATUS Status; + + + switch (OriginalObject->Common.Type) + { + case ACPI_TYPE_INTEGER: + /* + * Integer-to-String conversion. Commonly, convert + * an integer of value 0 to a NULL string. The last element of + * _BIF and _BIX packages occasionally need this fix. + */ + if (OriginalObject->Integer.Value == 0) + { + /* Allocate a new NULL string object */ + + NewObject = AcpiUtCreateStringObject (0); + if (!NewObject) + { + return (AE_NO_MEMORY); + } + } + else + { + Status = AcpiExConvertToString (OriginalObject, &NewObject, + ACPI_IMPLICIT_CONVERT_HEX); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + } + break; + + case ACPI_TYPE_BUFFER: /* - * Have a Buffer, expected a String, convert. Use a ToString + * Buffer-to-String conversion. Use a ToString * conversion, no transform performed on the buffer data. The best * example of this is the _BIF method, where the string data from * the battery is often (incorrectly) returned as buffer object(s). */ Length = 0; - while ((Length < ReturnObject->Buffer.Length) && - (ReturnObject->Buffer.Pointer[Length])) + while ((Length < OriginalObject->Buffer.Length) && + (OriginalObject->Buffer.Pointer[Length])) { Length++; } @@ -199,101 +441,188 @@ AcpiNsRepairObject ( * terminated at Length+1. */ ACPI_MEMCPY (NewObject->String.Pointer, - ReturnObject->Buffer.Pointer, Length); + OriginalObject->Buffer.Pointer, Length); break; + default: + return (AE_AML_OPERAND_TYPE); + } + + *ReturnObject = NewObject; + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiNsConvertToBuffer + * + * PARAMETERS: OriginalObject - Object to be converted + * ReturnObject - Where the new converted object is returned + * + * RETURN: Status. AE_OK if conversion was successful. + * + * DESCRIPTION: Attempt to convert a Integer/String/Package object to a Buffer. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiNsConvertToBuffer ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject) +{ + ACPI_OPERAND_OBJECT *NewObject; + ACPI_STATUS Status; + ACPI_OPERAND_OBJECT **Elements; + UINT32 *DwordBuffer; + UINT32 Count; + UINT32 i; + + switch (OriginalObject->Common.Type) + { case ACPI_TYPE_INTEGER: + /* + * Integer-to-Buffer conversion. + * Convert the Integer to a packed-byte buffer. _MAT and other + * objects need this sometimes, if a read has been performed on a + * Field object that is less than or equal to the global integer + * size (32 or 64 bits). + */ + Status = AcpiExConvertToBuffer (OriginalObject, &NewObject); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + break; + + case ACPI_TYPE_STRING: - /* 1) Does the method/object legally return a buffer? */ + /* String-to-Buffer conversion. Simple data copy */ - if (ExpectedBtypes & ACPI_RTYPE_BUFFER) + NewObject = AcpiUtCreateBufferObject (OriginalObject->String.Length); + if (!NewObject) { - /* - * Convert the Integer to a packed-byte buffer. _MAT needs - * this sometimes, if a read has been performed on a Field - * object that is less than or equal to the global integer - * size (32 or 64 bits). - */ - Status = AcpiExConvertToBuffer (ReturnObject, &NewObject); - if (ACPI_FAILURE (Status)) - { - return (Status); - } + return (AE_NO_MEMORY); } - /* 2) Does the method/object legally return a string? */ + ACPI_MEMCPY (NewObject->Buffer.Pointer, + OriginalObject->String.Pointer, OriginalObject->String.Length); + break; + + case ACPI_TYPE_PACKAGE: + /* + * This case is often seen for predefined names that must return a + * Buffer object with multiple DWORD integers within. For example, + * _FDE and _GTM. The Package can be converted to a Buffer. + */ + + /* All elements of the Package must be integers */ + + Elements = OriginalObject->Package.Elements; + Count = OriginalObject->Package.Count; - else if (ExpectedBtypes & ACPI_RTYPE_STRING) + for (i = 0; i < Count; i++) { - /* - * The only supported Integer-to-String conversion is to convert - * an integer of value 0 to a NULL string. The last element of - * _BIF and _BIX packages occasionally need this fix. - */ - if (ReturnObject->Integer.Value != 0) + if ((!*Elements) || + ((*Elements)->Common.Type != ACPI_TYPE_INTEGER)) { return (AE_AML_OPERAND_TYPE); } + Elements++; + } - /* Allocate a new NULL string object */ + /* Create the new buffer object to replace the Package */ - NewObject = AcpiUtCreateStringObject (0); - if (!NewObject) - { - return (AE_NO_MEMORY); - } - } - else + NewObject = AcpiUtCreateBufferObject (ACPI_MUL_4 (Count)); + if (!NewObject) { - return (AE_AML_OPERAND_TYPE); + return (AE_NO_MEMORY); } - break; + /* Copy the package elements (integers) to the buffer as DWORDs */ - default: + Elements = OriginalObject->Package.Elements; + DwordBuffer = ACPI_CAST_PTR (UINT32, NewObject->Buffer.Pointer); - /* We cannot repair this object */ + for (i = 0; i < Count; i++) + { + *DwordBuffer = (UINT32) (*Elements)->Integer.Value; + DwordBuffer++; + Elements++; + } + break; + default: return (AE_AML_OPERAND_TYPE); } - /* Object was successfully repaired */ + *ReturnObject = NewObject; + return (AE_OK); +} - /* - * If the original object is a package element, we need to: - * 1. Set the reference count of the new object to match the - * reference count of the old object. - * 2. Decrement the reference count of the original object. - */ - if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT) + +/******************************************************************************* + * + * FUNCTION: AcpiNsConvertToPackage + * + * PARAMETERS: OriginalObject - Object to be converted + * ReturnObject - Where the new converted object is returned + * + * RETURN: Status. AE_OK if conversion was successful. + * + * DESCRIPTION: Attempt to convert a Buffer object to a Package. Each byte of + * the buffer is converted to a single integer package element. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiNsConvertToPackage ( + ACPI_OPERAND_OBJECT *OriginalObject, + ACPI_OPERAND_OBJECT **ReturnObject) +{ + ACPI_OPERAND_OBJECT *NewObject; + ACPI_OPERAND_OBJECT **Elements; + UINT32 Length; + UINT8 *Buffer; + + + switch (OriginalObject->Common.Type) { - NewObject->Common.ReferenceCount = - ReturnObject->Common.ReferenceCount; + case ACPI_TYPE_BUFFER: - if (ReturnObject->Common.ReferenceCount > 1) + /* Buffer-to-Package conversion */ + + Length = OriginalObject->Buffer.Length; + NewObject = AcpiUtCreatePackageObject (Length); + if (!NewObject) { - ReturnObject->Common.ReferenceCount--; + return (AE_NO_MEMORY); } - ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags, - "Converted %s to expected %s at index %u", - AcpiUtGetObjectTypeName (ReturnObject), - AcpiUtGetObjectTypeName (NewObject), PackageIndex)); - } - else - { - ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags, - "Converted %s to expected %s", - AcpiUtGetObjectTypeName (ReturnObject), - AcpiUtGetObjectTypeName (NewObject))); - } + /* Convert each buffer byte to an integer package element */ - /* Delete old object, install the new return object */ + Elements = NewObject->Package.Elements; + Buffer = OriginalObject->Buffer.Pointer; - AcpiUtRemoveReference (ReturnObject); - *ReturnObjectPtr = NewObject; - Data->Flags |= ACPI_OBJECT_REPAIRED; + while (Length--) + { + *Elements = AcpiUtCreateIntegerObject ((UINT64) *Buffer); + if (!*Elements) + { + AcpiUtRemoveReference (NewObject); + return (AE_NO_MEMORY); + } + Elements++; + Buffer++; + } + break; + + default: + return (AE_AML_OPERAND_TYPE); + } + + *ReturnObject = NewObject; return (AE_OK); } @@ -330,6 +659,9 @@ AcpiNsRepairPackageList ( ACPI_OPERAND_OBJECT *PkgObjDesc; + ACPI_FUNCTION_NAME (NsRepairPackageList); + + /* * Create the new outer package and populate it. The new package will * have a single element, the lone subpackage. @@ -347,8 +679,8 @@ AcpiNsRepairPackageList ( *ObjDescPtr = PkgObjDesc; Data->Flags |= ACPI_OBJECT_REPAIRED; - ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags, - "Repaired Incorrectly formed Package")); + ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, + "%s: Repaired incorrectly formed Package\n", Data->Pathname)); return (AE_OK); } |
