dmresrc.c

acpi tools for linux include acpiexec and acpixtract

 *
 * FUNCTION:    AcpiDmBitList
 *
 * PARAMETERS:  Mask            - 16-bit value corresponding to 16 interrupt
 *                                or DMA values
 *
 * RETURN:      None
 *
 * DESCRIPTION: Dump a bit mask as a list of individual interrupt/DMA levels.
 *
 ******************************************************************************/

void
AcpiDmBitList (
    UINT16                  Mask)
{
    UINT32                  i;
    BOOLEAN                 Previous = FALSE;


    /* Open the initializer list */

    AcpiOsPrintf ("{");

    /* Examine each bit */

    for (i = 0; i < 16; i++)
    {
        /* Only interested in bits that are set to 1 */

        if (Mask & 1)
        {
            if (Previous)
            {
                AcpiOsPrintf (",");
            }
            Previous = TRUE;
            AcpiOsPrintf ("%d", i);
        }

        Mask >>= 1;
    }

    /* Close list */

    AcpiOsPrintf ("}\n");
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmResourceTemplate
 *
 * PARAMETERS:  Info            - Curent parse tree walk info
 *              ByteData        - Pointer to the byte list data
 *              ByteCount       - Length of the byte list
 *
 * RETURN:      None
 *
 * DESCRIPTION: Dump the contents of a Resource Template containing a set of
 *              Resource Descriptors.
 *
 ******************************************************************************/

void
AcpiDmResourceTemplate (
    ACPI_OP_WALK_INFO       *Info,
    ACPI_PARSE_OBJECT       *Op,
    UINT8                   *ByteData,
    UINT32                  ByteCount)
{
    ACPI_STATUS             Status;
    ACPI_NATIVE_UINT        CurrentByteOffset;
    UINT8                   ResourceType;
    UINT32                  ResourceLength;
    void                    *Aml;
    UINT32                  Level;
    BOOLEAN                 DependentFns = FALSE;
    UINT8                   ResourceIndex;
    ACPI_NAMESPACE_NODE     *Node;


    Level = Info->Level;
    ResourceName = ACPI_DEFAULT_RESNAME;
    Node = Op->Common.Node;
    if (Node)
    {
        Node = Node->Child;
    }

    for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount; )
    {
        Aml = &ByteData[CurrentByteOffset];

        /* Get the descriptor type and length */

        ResourceType = AcpiUtGetResourceType (Aml);
        ResourceLength = AcpiUtGetResourceLength (Aml);

        /* Validate the Resource Type and Resource Length */

        Status = AcpiUtValidateResource (Aml, &ResourceIndex);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("/*** Could not validate Resource, type (%X) %s***/\n",
                ResourceType, AcpiFormatException (Status));
            return;
        }

        /* Point to next descriptor */

        CurrentByteOffset += AcpiUtGetDescriptorLength (Aml);

        /* Descriptor pre-processing */

        switch (ResourceType)
        {
        case ACPI_RESOURCE_NAME_START_DEPENDENT:

            /* Finish a previous StartDependentFns */

            if (DependentFns)
            {
                Level--;
                AcpiDmIndent (Level);
                AcpiOsPrintf ("}\n");
            }
            break;

        case ACPI_RESOURCE_NAME_END_DEPENDENT:

            Level--;
            DependentFns = FALSE;
            break;

        case ACPI_RESOURCE_NAME_END_TAG:

            /* Normal exit, the resource list is finished */

            if (DependentFns)
            {
                /*
                 * Close an open StartDependentDescriptor. This indicates a
                 * missing EndDependentDescriptor.
                 */
                Level--;
                DependentFns = FALSE;

                /* Go ahead and insert EndDependentFn() */

                AcpiDmEndDependentDescriptor (Aml, ResourceLength, Level);

                AcpiDmIndent (Level);
                AcpiOsPrintf (
                    "/*** Disassembler: inserted missing EndDependentFn () ***/\n");
            }
            return;

        default:
            break;
        }

        /* Disassemble the resource structure */

        if (Node)
        {
            ResourceName = Node->Name.Integer;
            Node = Node->Peer;
        }

        AcpiGbl_DumpResourceDispatch [ResourceIndex] (
            Aml, ResourceLength, Level);

        /* Descriptor post-processing */

        if (ResourceType == ACPI_RESOURCE_NAME_START_DEPENDENT)
        {
            DependentFns = TRUE;
            Level++;
        }
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmIsResourceTemplate
 *
 * PARAMETERS:  Op          - Buffer Op to be examined
 *
 * RETURN:      Status. AE_OK if valid template
 *
 * DESCRIPTION: Walk a byte list to determine if it consists of a valid set
 *              of resource descriptors.  Nothing is output.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiDmIsResourceTemplate (
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_STATUS             Status;
    ACPI_PARSE_OBJECT       *NextOp;
    UINT8                   *Aml;
    UINT8                   *EndAml;
    ACPI_SIZE               Length;


    /* This op must be a buffer */

    if (Op->Common.AmlOpcode != AML_BUFFER_OP)
    {
        return (AE_TYPE);
    }

    /* Get the ByteData list and length */

    NextOp = Op->Common.Value.Arg;
    NextOp = NextOp->Common.Next;
    if (!NextOp)
    {
        return (AE_TYPE);
    }

    Aml = NextOp->Named.Data;
    Length = (ACPI_SIZE) NextOp->Common.Value.Integer;

    /* Walk the byte list, abort on any invalid descriptor type or length */

    Status = AcpiUtWalkAmlResources (Aml, Length, NULL, &EndAml);
    if (ACPI_FAILURE (Status))
    {
        return (AE_TYPE);
    }

    /*
     * For the resource template to be valid, one EndTag must appear
     * at the very end of the ByteList, not before. (For proper disassembly
     * of a ResourceTemplate, the buffer must not have any extra data after
     * the EndTag.)
     */
    if ((Aml + Length - sizeof (AML_RESOURCE_END_TAG)) != EndAml)
    {
        return (AE_AML_NO_RESOURCE_END_TAG);
    }

    /*
     * All resource descriptors are valid, therefore this list appears
     * to be a valid resource template
     */
    return (AE_OK);
}

#endif