aslresource.c

acpi tools for linux include acpiexec and acpixtract

    {
    case PARSEOP_DMA:
        Rnode = RsDoDmaDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_DWORDIO:
        Rnode = RsDoDwordIoDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_DWORDMEMORY:
        Rnode = RsDoDwordMemoryDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_DWORDSPACE:
        Rnode = RsDoDwordSpaceDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_ENDDEPENDENTFN:
        switch (*State)
        {
        case ACPI_RSTATE_NORMAL:
            AslError (ASL_ERROR, ASL_MSG_MISSING_STARTDEPENDENT,
                DescriptorTypeOp, NULL);
            break;

        case ACPI_RSTATE_START_DEPENDENT:
            AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
                DescriptorTypeOp, NULL);
            break;

        case ACPI_RSTATE_DEPENDENT_LIST:
        default:
            break;
        }

        *State = ACPI_RSTATE_NORMAL;
        Rnode = RsDoEndDependentDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_ENDTAG:
        Rnode = RsDoEndTagDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_EXTENDEDIO:
        Rnode = RsDoExtendedIoDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_EXTENDEDMEMORY:
        Rnode = RsDoExtendedMemoryDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_EXTENDEDSPACE:
        Rnode = RsDoExtendedSpaceDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_FIXEDIO:
        Rnode = RsDoFixedIoDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_INTERRUPT:
        Rnode = RsDoInterruptDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_IO:
        Rnode = RsDoIoDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_IRQ:
        Rnode = RsDoIrqDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_IRQNOFLAGS:
        Rnode = RsDoIrqNoFlagsDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_MEMORY24:
        Rnode = RsDoMemory24Descriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_MEMORY32:
        Rnode = RsDoMemory32Descriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_MEMORY32FIXED:
        Rnode = RsDoMemory32FixedDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_QWORDIO:
        Rnode = RsDoQwordIoDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_QWORDMEMORY:
        Rnode = RsDoQwordMemoryDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_QWORDSPACE:
        Rnode = RsDoQwordSpaceDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_REGISTER:
        Rnode = RsDoGeneralRegisterDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_STARTDEPENDENTFN:
        switch (*State)
        {
        case ACPI_RSTATE_START_DEPENDENT:
            AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
                DescriptorTypeOp, NULL);
            break;

        case ACPI_RSTATE_NORMAL:
        case ACPI_RSTATE_DEPENDENT_LIST:
        default:
            break;
        }

        *State = ACPI_RSTATE_START_DEPENDENT;
        Rnode = RsDoStartDependentDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        *State = ACPI_RSTATE_DEPENDENT_LIST;
        break;

    case PARSEOP_STARTDEPENDENTFN_NOPRI:
        switch (*State)
        {
        case ACPI_RSTATE_START_DEPENDENT:
            AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
                DescriptorTypeOp, NULL);
            break;

        case ACPI_RSTATE_NORMAL:
        case ACPI_RSTATE_DEPENDENT_LIST:
        default:
            break;
        }

        *State = ACPI_RSTATE_START_DEPENDENT;
        Rnode = RsDoStartDependentNoPriDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        *State = ACPI_RSTATE_DEPENDENT_LIST;
        break;

    case PARSEOP_VENDORLONG:
        Rnode = RsDoVendorLargeDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_VENDORSHORT:
        Rnode = RsDoVendorSmallDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_WORDBUSNUMBER:
        Rnode = RsDoWordBusNumberDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_WORDIO:
        Rnode = RsDoWordIoDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_WORDSPACE:
        Rnode = RsDoWordSpaceDescriptor (DescriptorTypeOp,
                    CurrentByteOffset);
        break;

    case PARSEOP_DEFAULT_ARG:
        /* Just ignore any of these, they are used as fillers/placeholders */
        break;

    default:
        printf ("Unknown resource descriptor type [%s]\n",
                    DescriptorTypeOp->Asl.ParseOpName);
        break;
    }

    /*
     * Mark original node as unused, but head of a resource descriptor.
     * This allows the resource to be installed in the namespace so that
     * references to the descriptor can be resolved.
     */
    DescriptorTypeOp->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
    DescriptorTypeOp->Asl.CompileFlags = NODE_IS_RESOURCE_DESC;
    DescriptorTypeOp->Asl.Value.Integer = CurrentByteOffset;

    if (Rnode)
    {
        DescriptorTypeOp->Asl.FinalAmlLength = Rnode->BufferLength;
    }

    return (Rnode);
}


/*******************************************************************************
 *
 * FUNCTION:    RsLinkDescriptorChain
 *
 * PARAMETERS:  PreviousRnode       - Pointer to the node that will be previous
 *                                    to the linked node,  At exit, set to the
 *                                    last node in the new chain.
 *              Rnode               - Resource node to link into the list
 *
 * RETURN:      Cumulative buffer byte offset of the new segment of chain
 *
 * DESCRIPTION: Link a descriptor chain at the end of an existing chain.
 *
 ******************************************************************************/

UINT32
RsLinkDescriptorChain (
    ASL_RESOURCE_NODE       **PreviousRnode,
    ASL_RESOURCE_NODE       *Rnode)
{
    ASL_RESOURCE_NODE       *LastRnode;
    UINT32                  CurrentByteOffset;


    /* Anything to do? */

    if (!Rnode)
    {
        return 0;
    }

    /* Point the previous node to the new node */

    (*PreviousRnode)->Next = Rnode;
    CurrentByteOffset = Rnode->BufferLength;

    /* Walk to the end of the chain headed by Rnode */

    LastRnode = Rnode;
    while (LastRnode->Next)
    {
        LastRnode = LastRnode->Next;
        CurrentByteOffset += LastRnode->BufferLength;
    }

    /* Previous node becomes the last node in the chain */

    *PreviousRnode = LastRnode;
    return CurrentByteOffset;
}


/*******************************************************************************
 *
 * FUNCTION:    RsDoResourceTemplate
 *
 * PARAMETERS:  Op        - Parent of a resource template list
 *
 * RETURN:      None.  Sets input node to point to a list of AML code
 *
 * DESCRIPTION: Merge a list of resource descriptors into a single AML buffer,
 *              in preparation for output to the AML output file.
 *
 ******************************************************************************/

void
RsDoResourceTemplate (
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_PARSE_OBJECT       *BufferLengthOp;
    ACPI_PARSE_OBJECT       *BufferOp;
    ACPI_PARSE_OBJECT       *DescriptorTypeOp;
    ACPI_PARSE_OBJECT       *LastOp = NULL;
    UINT32                  CurrentByteOffset = 0;
    ASL_RESOURCE_NODE       HeadRnode;
    ASL_RESOURCE_NODE       *PreviousRnode;
    ASL_RESOURCE_NODE       *Rnode;
    UINT8                   State;


    /* Mark parent as containing a resource template */

    if (Op->Asl.Parent)
    {
        Op->Asl.Parent->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC;
    }

    /* ResourceTemplate Opcode is first (Op) */
    /* Buffer Length node is first child */

    BufferLengthOp = ASL_GET_CHILD_NODE (Op);

    /* Buffer Op is first peer */

    BufferOp = ASL_GET_PEER_NODE (BufferLengthOp);

    /* First Descriptor type is next */

    DescriptorTypeOp = ASL_GET_PEER_NODE (BufferOp);

    /*
     * Process all resource descriptors in the list
     * Note: It is assumed that the EndTag node has been automatically
     * inserted at the end of the template by the parser.
     */
    State = ACPI_RSTATE_NORMAL;
    PreviousRnode = &HeadRnode;
    while (DescriptorTypeOp)
    {
        DescriptorTypeOp->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC;
        Rnode = RsDoOneResourceDescriptor (DescriptorTypeOp, CurrentByteOffset,
                    &State);

        /*
         * Update current byte offset to indicate the number of bytes from the
         * start of the buffer.  Buffer can include multiple descriptors, we
         * must keep track of the offset of not only each descriptor, but each
         * element (field) within each descriptor as well.
         */
        CurrentByteOffset += RsLinkDescriptorChain (&PreviousRnode, Rnode);

        /* Get the next descriptor in the list */

        LastOp = DescriptorTypeOp;
        DescriptorTypeOp = ASL_GET_PEER_NODE (DescriptorTypeOp);
    }

    if (State == ACPI_RSTATE_DEPENDENT_LIST)
    {
        if (LastOp)
        {
            LastOp = LastOp->Asl.Parent;
        }
        AslError (ASL_ERROR, ASL_MSG_MISSING_ENDDEPENDENT, LastOp, NULL);
    }

    /*
     * Transform the nodes into the following
     *
     * Op           -> AML_BUFFER_OP
     * First Child  -> BufferLength
     * Second Child -> Descriptor Buffer (raw byte data)
     */
    Op->Asl.ParseOpcode               = PARSEOP_BUFFER;
    Op->Asl.AmlOpcode                 = AML_BUFFER_OP;
    Op->Asl.CompileFlags              = NODE_AML_PACKAGE | NODE_IS_RESOURCE_DESC;

    BufferLengthOp->Asl.ParseOpcode   = PARSEOP_INTEGER;
    BufferLengthOp->Asl.Value.Integer = CurrentByteOffset;
    (void) OpcSetOptimalIntegerSize (BufferLengthOp);

    BufferOp->Asl.ParseOpcode         = PARSEOP_RAW_DATA;
    BufferOp->Asl.AmlOpcode           = AML_RAW_DATA_CHAIN;
    BufferOp->Asl.AmlOpcodeLength     = 0;
    BufferOp->Asl.AmlLength           = CurrentByteOffset;
    BufferOp->Asl.Value.Buffer        = (UINT8 *) HeadRnode.Next;
    BufferOp->Asl.CompileFlags       |= NODE_IS_RESOURCE_DATA;

    return;
}