| 0,0 → 1,876 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: nsrepair - Repair for objects returned by predefined methods |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #define __NSREPAIR_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acnamesp.h" |
| #include "acinterp.h" |
| #include "acpredef.h" |
| |
| #define _COMPONENT ACPI_NAMESPACE |
| ACPI_MODULE_NAME ("nsrepair") |
| |
| |
| /******************************************************************************* |
| * |
| * 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 |
| * |
| * Additional possible repairs: |
| * |
| * Optional/unnecessary NULL package elements removed |
| * Required package elements that are NULL replaced by Integer/String/Buffer |
| * Incorrect standalone package wrapped with required outer 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 |
| * ExpectedBtypes - Object types expected |
| * PackageIndex - Index of object within parent package (if |
| * applicable - ACPI_NOT_PACKAGE_ELEMENT |
| * otherwise) |
| * ReturnObjectPtr - Pointer to the object returned from the |
| * evaluation of a method or object |
| * |
| * RETURN: Status. AE_OK if repair was successful. |
| * |
| * DESCRIPTION: Attempt to repair/convert a return object of a type that was |
| * not expected. |
| * |
| ******************************************************************************/ |
| |
| 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) |
| { |
| 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. |
| */ |
| 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: |
| |
| /* Buffer-to-Integer conversion. Max buffer size is 64 bits. */ |
| |
| 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: |
| /* |
| * 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 < OriginalObject->Buffer.Length) && |
| (OriginalObject->Buffer.Pointer[Length])) |
| { |
| Length++; |
| } |
| |
| /* Allocate a new string object */ |
| |
| NewObject = AcpiUtCreateStringObject (Length); |
| if (!NewObject) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* |
| * Copy the raw buffer data with no transform. String is already NULL |
| * terminated at Length+1. |
| */ |
| ACPI_MEMCPY (NewObject->String.Pointer, |
| 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: |
| |
| /* String-to-Buffer conversion. Simple data copy */ |
| |
| NewObject = AcpiUtCreateBufferObject (OriginalObject->String.Length); |
| if (!NewObject) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| 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; |
| |
| for (i = 0; i < Count; i++) |
| { |
| if ((!*Elements) || |
| ((*Elements)->Common.Type != ACPI_TYPE_INTEGER)) |
| { |
| return (AE_AML_OPERAND_TYPE); |
| } |
| Elements++; |
| } |
| |
| /* Create the new buffer object to replace the Package */ |
| |
| NewObject = AcpiUtCreateBufferObject (ACPI_MUL_4 (Count)); |
| if (!NewObject) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Copy the package elements (integers) to the buffer as DWORDs */ |
| |
| Elements = OriginalObject->Package.Elements; |
| DwordBuffer = ACPI_CAST_PTR (UINT32, NewObject->Buffer.Pointer); |
| |
| for (i = 0; i < Count; i++) |
| { |
| *DwordBuffer = (UINT32) (*Elements)->Integer.Value; |
| DwordBuffer++; |
| Elements++; |
| } |
| break; |
| |
| default: |
| return (AE_AML_OPERAND_TYPE); |
| } |
| |
| *ReturnObject = NewObject; |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * 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) |
| { |
| case ACPI_TYPE_BUFFER: |
| |
| /* Buffer-to-Package conversion */ |
| |
| Length = OriginalObject->Buffer.Length; |
| NewObject = AcpiUtCreatePackageObject (Length); |
| if (!NewObject) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Convert each buffer byte to an integer package element */ |
| |
| Elements = NewObject->Package.Elements; |
| Buffer = OriginalObject->Buffer.Pointer; |
| |
| 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); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiNsRepairNullElement |
| * |
| * PARAMETERS: Data - Pointer to validation data structure |
| * ExpectedBtypes - Object types expected |
| * PackageIndex - Index of object within parent package (if |
| * applicable - ACPI_NOT_PACKAGE_ELEMENT |
| * otherwise) |
| * ReturnObjectPtr - Pointer to the object returned from the |
| * evaluation of a method or object |
| * |
| * RETURN: Status. AE_OK if repair was successful. |
| * |
| * DESCRIPTION: Attempt to repair a NULL element of a returned Package object. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiNsRepairNullElement ( |
| ACPI_PREDEFINED_DATA *Data, |
| UINT32 ExpectedBtypes, |
| UINT32 PackageIndex, |
| ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
| { |
| ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
| ACPI_OPERAND_OBJECT *NewObject; |
| |
| |
| ACPI_FUNCTION_NAME (NsRepairNullElement); |
| |
| |
| /* No repair needed if return object is non-NULL */ |
| |
| if (ReturnObject) |
| { |
| return (AE_OK); |
| } |
| |
| /* |
| * Attempt to repair a NULL element of a Package object. This applies to |
| * predefined names that return a fixed-length package and each element |
| * is required. It does not apply to variable-length packages where NULL |
| * elements are allowed, especially at the end of the package. |
| */ |
| if (ExpectedBtypes & ACPI_RTYPE_INTEGER) |
| { |
| /* Need an Integer - create a zero-value integer */ |
| |
| NewObject = AcpiUtCreateIntegerObject (0); |
| } |
| else if (ExpectedBtypes & ACPI_RTYPE_STRING) |
| { |
| /* Need a String - create a NULL string */ |
| |
| NewObject = AcpiUtCreateStringObject (0); |
| } |
| else if (ExpectedBtypes & ACPI_RTYPE_BUFFER) |
| { |
| /* Need a Buffer - create a zero-length buffer */ |
| |
| NewObject = AcpiUtCreateBufferObject (0); |
| } |
| else |
| { |
| /* Error for all other expected types */ |
| |
| return (AE_AML_OPERAND_TYPE); |
| } |
| |
| if (!NewObject) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Set the reference count according to the parent Package object */ |
| |
| NewObject->Common.ReferenceCount = Data->ParentPackage->Common.ReferenceCount; |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
| "%s: Converted NULL package element to expected %s at index %u\n", |
| Data->Pathname, AcpiUtGetObjectTypeName (NewObject), PackageIndex)); |
| |
| *ReturnObjectPtr = NewObject; |
| Data->Flags |= ACPI_OBJECT_REPAIRED; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiNsRemoveNullElements |
| * |
| * PARAMETERS: Data - Pointer to validation data structure |
| * PackageType - An AcpiReturnPackageTypes value |
| * ObjDesc - A Package object |
| * |
| * RETURN: None. |
| * |
| * DESCRIPTION: Remove all NULL package elements from packages that contain |
| * a variable number of sub-packages. For these types of |
| * packages, NULL elements can be safely removed. |
| * |
| *****************************************************************************/ |
| |
| void |
| AcpiNsRemoveNullElements ( |
| ACPI_PREDEFINED_DATA *Data, |
| UINT8 PackageType, |
| ACPI_OPERAND_OBJECT *ObjDesc) |
| { |
| ACPI_OPERAND_OBJECT **Source; |
| ACPI_OPERAND_OBJECT **Dest; |
| UINT32 Count; |
| UINT32 NewCount; |
| UINT32 i; |
| |
| |
| ACPI_FUNCTION_NAME (NsRemoveNullElements); |
| |
| |
| /* |
| * PTYPE1 packages contain no subpackages. |
| * PTYPE2 packages contain a variable number of sub-packages. We can |
| * safely remove all NULL elements from the PTYPE2 packages. |
| */ |
| switch (PackageType) |
| { |
| case ACPI_PTYPE1_FIXED: |
| case ACPI_PTYPE1_VAR: |
| case ACPI_PTYPE1_OPTION: |
| return; |
| |
| case ACPI_PTYPE2: |
| case ACPI_PTYPE2_COUNT: |
| case ACPI_PTYPE2_PKG_COUNT: |
| case ACPI_PTYPE2_FIXED: |
| case ACPI_PTYPE2_MIN: |
| case ACPI_PTYPE2_REV_FIXED: |
| break; |
| |
| default: |
| return; |
| } |
| |
| Count = ObjDesc->Package.Count; |
| NewCount = Count; |
| |
| Source = ObjDesc->Package.Elements; |
| Dest = Source; |
| |
| /* Examine all elements of the package object, remove nulls */ |
| |
| for (i = 0; i < Count; i++) |
| { |
| if (!*Source) |
| { |
| NewCount--; |
| } |
| else |
| { |
| *Dest = *Source; |
| Dest++; |
| } |
| Source++; |
| } |
| |
| /* Update parent package if any null elements were removed */ |
| |
| if (NewCount < Count) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
| "%s: Found and removed %u NULL elements\n", |
| Data->Pathname, (Count - NewCount))); |
| |
| /* NULL terminate list and update the package count */ |
| |
| *Dest = NULL; |
| ObjDesc->Package.Count = NewCount; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiNsRepairPackageList |
| * |
| * PARAMETERS: Data - Pointer to validation data structure |
| * ObjDescPtr - Pointer to the object to repair. The new |
| * package object is returned here, |
| * overwriting the old object. |
| * |
| * RETURN: Status, new object in *ObjDescPtr |
| * |
| * DESCRIPTION: Repair a common problem with objects that are defined to return |
| * a variable-length Package of Packages. If the variable-length |
| * is one, some BIOS code mistakenly simply declares a single |
| * Package instead of a Package with one sub-Package. This |
| * function attempts to repair this error by wrapping a Package |
| * object around the original Package, creating the correct |
| * Package with one sub-Package. |
| * |
| * Names that can be repaired in this manner include: |
| * _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, TSS |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiNsRepairPackageList ( |
| ACPI_PREDEFINED_DATA *Data, |
| ACPI_OPERAND_OBJECT **ObjDescPtr) |
| { |
| 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. |
| */ |
| PkgObjDesc = AcpiUtCreatePackageObject (1); |
| if (!PkgObjDesc) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| PkgObjDesc->Package.Elements[0] = *ObjDescPtr; |
| |
| /* Return the new object in the object pointer */ |
| |
| *ObjDescPtr = PkgObjDesc; |
| Data->Flags |= ACPI_OBJECT_REPAIRED; |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
| "%s: Repaired incorrectly formed Package\n", Data->Pathname)); |
| |
| return (AE_OK); |
| } |