nsrepair.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acnamesp.h"
#include "acinterp.h"
#include "acpredef.h"
#include "amlresrc.h"

Include dependency graph for nsrepair.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_NAMESPACE

Functions
static const ACPI_SIMPLE_REPAIR_INFO *	AcpiNsMatchSimpleRepair (ACPI_NAMESPACE_NODE *Node, UINT32 ReturnBtype, UINT32 PackageIndex)
ACPI_STATUS	AcpiNsSimpleRepair (ACPI_EVALUATE_INFO *Info, UINT32 ExpectedBtypes, UINT32 PackageIndex, ACPI_OPERAND_OBJECT **ReturnObjectPtr)
ACPI_STATUS	AcpiNsRepairNullElement (ACPI_EVALUATE_INFO *Info, UINT32 ExpectedBtypes, UINT32 PackageIndex, ACPI_OPERAND_OBJECT **ReturnObjectPtr)
void	AcpiNsRemoveNullElements (ACPI_EVALUATE_INFO *Info, UINT8 PackageType, ACPI_OPERAND_OBJECT *ObjDesc)
ACPI_STATUS	AcpiNsWrapWithPackage (ACPI_EVALUATE_INFO *Info, ACPI_OPERAND_OBJECT *OriginalObject, ACPI_OPERAND_OBJECT **ObjDescPtr)

Variables
static const ACPI_SIMPLE_REPAIR_INFO	AcpiObjectRepairInfo []

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_NAMESPACE

Definition at line 51 of file nsrepair.c.

Function Documentation

AcpiNsMatchSimpleRepair()

static const ACPI_SIMPLE_REPAIR_INFO * AcpiNsMatchSimpleRepair ( ACPI_NAMESPACE_NODE *  Node, UINT32  ReturnBtype, UINT32  PackageIndex  )

static

Definition at line 352 of file nsrepair.c.

{
    const ACPI_SIMPLE_REPAIR_INFO   *ThisName;
 
 
    /* Search info table for a repairable predefined method/object name */
 
    ThisName = AcpiObjectRepairInfo;
    while (ThisName->ObjectConverter)
    {
        if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, ThisName->Name))
        {
            /* Check if we can actually repair this name/type combination */
 
            if ((ReturnBtype & ThisName->UnexpectedBtypes) &&
                (ThisName->PackageIndex == ACPI_ALL_PACKAGE_ELEMENTS ||
                 PackageIndex == ThisName->PackageIndex))
            {
                return (ThisName);
            }
 
            return (NULL);
        }
 
        ThisName++;
    }
 
    return (NULL); /* Name was not found in the repair table */
}

Referenced by AcpiNsSimpleRepair().

AcpiNsRemoveNullElements()

void AcpiNsRemoveNullElements	(	ACPI_EVALUATE_INFO *	Info,
		UINT8	PackageType,
		ACPI_OPERAND_OBJECT *	ObjDesc
	)

Definition at line 494 of file nsrepair.c.

{
    ACPI_OPERAND_OBJECT     **Source;
    ACPI_OPERAND_OBJECT     **Dest;
    UINT32                  Count;
    UINT32                  NewCount;
    UINT32                  i;
 
 
    ACPI_FUNCTION_NAME (NsRemoveNullElements);
 
 
    /*
     * We can safely remove all NULL elements from these package types:
     * PTYPE1_VAR packages contain a variable number of simple data types.
     * PTYPE2 packages contain a variable number of subpackages.
     */
    switch (PackageType)
    {
    case ACPI_PTYPE1_VAR:
    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:
    case ACPI_PTYPE2_FIX_VAR:
        break;
 
    default:
    case ACPI_PTYPE2_VAR_VAR:
    case ACPI_PTYPE1_FIXED:
    case ACPI_PTYPE1_OPTION:
        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",
            Info->FullPathname, (Count - NewCount)));
 
        /* NULL terminate list and update the package count */
 
        *Dest = NULL;
        ObjDesc->Package.Count = NewCount;
    }
}

Referenced by AcpiNsCheckPackage().

AcpiNsRepairNullElement()

ACPI_STATUS AcpiNsRepairNullElement	(	ACPI_EVALUATE_INFO *	Info,
		UINT32	ExpectedBtypes,
		UINT32	PackageIndex,
		ACPI_OPERAND_OBJECT **	ReturnObjectPtr
	)

Definition at line 405 of file nsrepair.c.

{
    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 ((UINT64) 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 =
        Info->ParentPackage->Common.ReferenceCount;
 
    ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
        "%s: Converted NULL package element to expected %s at index %u\n",
        Info->FullPathname, AcpiUtGetObjectTypeName (NewObject),
        PackageIndex));
 
    *ReturnObjectPtr = NewObject;
    Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
    return (AE_OK);
}

Referenced by AcpiNsSimpleRepair().

AcpiNsSimpleRepair()

ACPI_STATUS AcpiNsSimpleRepair	(	ACPI_EVALUATE_INFO *	Info,
		UINT32	ExpectedBtypes,
		UINT32	PackageIndex,
		ACPI_OPERAND_OBJECT **	ReturnObjectPtr
	)

Definition at line 153 of file nsrepair.c.

{
    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)
    {
        /* Update reference count of new object */
 
        if (!(Info->ReturnFlags & ACPI_OBJECT_WRAPPED))
        {
            NewObject->Common.ReferenceCount =
                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);
}

Referenced by AcpiNsCheckObjectType().

AcpiNsWrapWithPackage()

ACPI_STATUS AcpiNsWrapWithPackage	(	ACPI_EVALUATE_INFO *	Info,
		ACPI_OPERAND_OBJECT *	OriginalObject,
		ACPI_OPERAND_OBJECT **	ObjDescPtr
	)

Definition at line 597 of file nsrepair.c.

{
    ACPI_OPERAND_OBJECT     *PkgObjDesc;
 
 
    ACPI_FUNCTION_NAME (NsWrapWithPackage);
 
 
    /*
     * Create the new outer package and populate it. The new
     * package will have a single element, the lone sub-object.
     */
    PkgObjDesc = AcpiUtCreatePackageObject (1);
    if (!PkgObjDesc)
    {
        return (AE_NO_MEMORY);
    }
 
    PkgObjDesc->Package.Elements[0] = OriginalObject;
 
    ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
        "%s: Wrapped %s with expected Package object\n",
        Info->FullPathname, AcpiUtGetObjectTypeName (OriginalObject)));
 
    /* Return the new object in the object pointer */
 
    *ObjDescPtr = PkgObjDesc;
    Info->ReturnFlags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
    return (AE_OK);
}

Referenced by AcpiNsCheckPackage(), and AcpiNsSimpleRepair().

Variable Documentation

AcpiObjectRepairInfo

const ACPI_SIMPLE_REPAIR_INFO AcpiObjectRepairInfo[]

static

Initial value:

=
{
    
 
    { "_CRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE,
                ACPI_NOT_PACKAGE_ELEMENT,
                AcpiNsConvertToResource },
    { "_DMA", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE,
                ACPI_NOT_PACKAGE_ELEMENT,
                AcpiNsConvertToResource },
    { "_PRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE,
                ACPI_NOT_PACKAGE_ELEMENT,
                AcpiNsConvertToResource },
 
    
 
    { "_DEP", ACPI_RTYPE_STRING, ACPI_ALL_PACKAGE_ELEMENTS,
                AcpiNsConvertToReference },
 
    
 
    { "_MLS", ACPI_RTYPE_STRING, 1,
                AcpiNsConvertToUnicode },
    { "_STR", ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER,
                ACPI_NOT_PACKAGE_ELEMENT,
                AcpiNsConvertToUnicode },
    { {0,0,0,0}, 0, 0, NULL } 
}

Definition at line 103 of file nsrepair.c.

Referenced by AcpiNsMatchSimpleRepair().