xref: /dragonfly/sys/contrib/dev/acpica/source/compiler/aslrestype1i.c (revision 383048ac)

/******************************************************************************
 *
 * Module Name: aslrestype1i - Small I/O-related resource descriptors
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2021, 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.
 *
 *****************************************************************************
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * following license:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 *****************************************************************************/

#include "aslcompiler.h"
#include "aslcompiler.y.h"

#define _COMPONENT          ACPI_COMPILER
        ACPI_MODULE_NAME    ("aslrestype1i")

/*
 * This module contains the I/O-related small resource descriptors:
 *
 * DMA
 * FixedDMA
 * FixedIO
 * IO
 * IRQ
 * IRQNoFlags
 */

/*******************************************************************************
 *
 * FUNCTION:    RsDoDmaDescriptor
 *
 * PARAMETERS:  Info                - Parse Op and resource template offset
 *
 * RETURN:      Completed resource node
 *
 * DESCRIPTION: Construct a short "DMA" descriptor
 *
 ******************************************************************************/

ASL_RESOURCE_NODE *
RsDoDmaDescriptor (
    ASL_RESOURCE_INFO       *Info)
{
    AML_RESOURCE            *Descriptor;
    ACPI_PARSE_OBJECT       *InitializerOp;
    ASL_RESOURCE_NODE       *Rnode;
    UINT32                  CurrentByteOffset;
    UINT32                  i;
    UINT8                   DmaChannelMask = 0;
    UINT8                   DmaChannels = 0;


    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
    CurrentByteOffset = Info->CurrentByteOffset;
    Rnode = RsAllocateResourceNode (sizeof (AML_RESOURCE_DMA));

    Descriptor = Rnode->Buffer;
    Descriptor->Dma.DescriptorType =
        ACPI_RESOURCE_NAME_DMA | ASL_RDESC_DMA_SIZE;

    /* Process all child initialization nodes */

    for (i = 0; InitializerOp; i++)
    {
        switch (i)
        {
        case 0: /* DMA type */

            RsSetFlagBits (&Descriptor->Dma.Flags, InitializerOp, 5, 0);
            RsCreateMultiBitField (InitializerOp, ACPI_RESTAG_DMATYPE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Dma.Flags), 5, 2);
            break;

        case 1: /* Bus Master */

            RsSetFlagBits (&Descriptor->Dma.Flags, InitializerOp, 2, 0);
            RsCreateBitField (InitializerOp, ACPI_RESTAG_BUSMASTER,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Dma.Flags), 2);
            break;

        case 2: /* Xfer Type (transfer width) */

            RsSetFlagBits (&Descriptor->Dma.Flags, InitializerOp, 0, 0);
            RsCreateMultiBitField (InitializerOp, ACPI_RESTAG_XFERTYPE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Dma.Flags), 0, 2);
            break;

        case 3: /* Name */

            UtAttachNamepathToOwner (Info->DescriptorTypeOp, InitializerOp);
            break;

        default:

            /* All DMA channel bytes are handled here, after flags and name */

            if (InitializerOp->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)
            {
                /* Up to 8 channels can be specified in the list */

                DmaChannels++;
                if (DmaChannels > 8)
                {
                    AslError (ASL_ERROR, ASL_MSG_DMA_LIST,
                        InitializerOp, NULL);
                    return (Rnode);
                }

                /* Only DMA channels 0-7 are allowed (mask is 8 bits) */

                if (InitializerOp->Asl.Value.Integer > 7)
                {
                    AslError (ASL_ERROR, ASL_MSG_DMA_CHANNEL,
                        InitializerOp, NULL);
                }

                /* Build the mask */

                DmaChannelMask |=
                    (1 << ((UINT8) InitializerOp->Asl.Value.Integer));
            }

            if (i == 4) /* case 4: First DMA byte */
            {
                /* Check now for duplicates in list */

                RsCheckListForDuplicates (InitializerOp);

                /* Create a named field at the start of the list */

                RsCreateByteField (InitializerOp, ACPI_RESTAG_DMA,
                    CurrentByteOffset +
                    ASL_RESDESC_OFFSET (Dma.DmaChannelMask));
            }
            break;
        }

        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
    }

    /* Now we can set the channel mask */

    Descriptor->Dma.DmaChannelMask = DmaChannelMask;
    return (Rnode);
}


/*******************************************************************************
 *
 * FUNCTION:    RsDoFixedDmaDescriptor
 *
 * PARAMETERS:  Info                - Parse Op and resource template offset
 *
 * RETURN:      Completed resource node
 *
 * DESCRIPTION: Construct a short "FixedDMA" descriptor
 *
 ******************************************************************************/

ASL_RESOURCE_NODE *
RsDoFixedDmaDescriptor (
    ASL_RESOURCE_INFO       *Info)
{
    AML_RESOURCE            *Descriptor;
    ACPI_PARSE_OBJECT       *InitializerOp;
    ASL_RESOURCE_NODE       *Rnode;
    UINT32                  CurrentByteOffset;
    UINT32                  i;


    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
    CurrentByteOffset = Info->CurrentByteOffset;
    Rnode = RsAllocateResourceNode (sizeof (AML_RESOURCE_FIXED_DMA));

    Descriptor = Rnode->Buffer;
    Descriptor->FixedDma.DescriptorType =
        ACPI_RESOURCE_NAME_FIXED_DMA | ASL_RDESC_FIXED_DMA_SIZE;

    /* Process all child initialization nodes */

    for (i = 0; InitializerOp; i++)
    {
        switch (i)
        {
        case 0: /* DMA Request Lines [WORD] (_DMA) */

            Descriptor->FixedDma.RequestLines = (UINT16) InitializerOp->Asl.Value.Integer;
            RsCreateWordField (InitializerOp, ACPI_RESTAG_DMA,
                CurrentByteOffset + ASL_RESDESC_OFFSET (FixedDma.RequestLines));
            break;

        case 1: /* DMA Channel [WORD] (_TYP) */

            Descriptor->FixedDma.Channels = (UINT16) InitializerOp->Asl.Value.Integer;
            RsCreateWordField (InitializerOp, ACPI_RESTAG_DMATYPE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (FixedDma.Channels));
            break;

        case 2: /* Transfer Width [BYTE] (_SIZ) */

            Descriptor->FixedDma.Width = (UINT8) InitializerOp->Asl.Value.Integer;
            RsCreateByteField (InitializerOp, ACPI_RESTAG_XFERTYPE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (FixedDma.Width));
            break;

        case 3: /* Descriptor Name (optional) */

            UtAttachNamepathToOwner (Info->DescriptorTypeOp, InitializerOp);
            break;

        default:    /* Ignore any extra nodes */

            break;
        }

        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
    }

    return (Rnode);
}


/*******************************************************************************
 *
 * FUNCTION:    RsDoFixedIoDescriptor
 *
 * PARAMETERS:  Info                - Parse Op and resource template offset
 *
 * RETURN:      Completed resource node
 *
 * DESCRIPTION: Construct a short "FixedIO" descriptor
 *
 ******************************************************************************/

ASL_RESOURCE_NODE *
RsDoFixedIoDescriptor (
    ASL_RESOURCE_INFO       *Info)
{
    AML_RESOURCE            *Descriptor;
    ACPI_PARSE_OBJECT       *InitializerOp;
    ACPI_PARSE_OBJECT       *AddressOp = NULL;
    ASL_RESOURCE_NODE       *Rnode;
    UINT32                  CurrentByteOffset;
    UINT32                  i;


    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
    CurrentByteOffset = Info->CurrentByteOffset;
    Rnode = RsAllocateResourceNode (sizeof (AML_RESOURCE_FIXED_IO));

    Descriptor = Rnode->Buffer;
    Descriptor->Io.DescriptorType =
        ACPI_RESOURCE_NAME_FIXED_IO | ASL_RDESC_FIXED_IO_SIZE;

    /* Process all child initialization nodes */

    for (i = 0; InitializerOp; i++)
    {
        switch (i)
        {
        case 0: /* Base Address */

            Descriptor->FixedIo.Address =
                (UINT16) InitializerOp->Asl.Value.Integer;
            RsCreateWordField (InitializerOp, ACPI_RESTAG_BASEADDRESS,
                CurrentByteOffset + ASL_RESDESC_OFFSET (FixedIo.Address));
            AddressOp = InitializerOp;
            break;

        case 1: /* Length */

            Descriptor->FixedIo.AddressLength =
                (UINT8) InitializerOp->Asl.Value.Integer;
            RsCreateByteField (InitializerOp, ACPI_RESTAG_LENGTH,
                CurrentByteOffset + ASL_RESDESC_OFFSET (FixedIo.AddressLength));
            break;

        case 2: /* Name */

            UtAttachNamepathToOwner (Info->DescriptorTypeOp, InitializerOp);
            break;

        default:

            AslError (ASL_ERROR, ASL_MSG_RESOURCE_LIST, InitializerOp, NULL);
            break;
        }

        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
    }

    /* Error checks */

    if (Descriptor->FixedIo.Address > 0x03FF)
    {
        AslError (ASL_WARNING, ASL_MSG_ISA_ADDRESS, AddressOp, NULL);
    }

    return (Rnode);
}


/*******************************************************************************
 *
 * FUNCTION:    RsDoIoDescriptor
 *
 * PARAMETERS:  Info                - Parse Op and resource template offset
 *
 * RETURN:      Completed resource node
 *
 * DESCRIPTION: Construct a short "IO" descriptor
 *
 ******************************************************************************/

ASL_RESOURCE_NODE *
RsDoIoDescriptor (
    ASL_RESOURCE_INFO       *Info)
{
    AML_RESOURCE            *Descriptor;
    ACPI_PARSE_OBJECT       *InitializerOp;
    ACPI_PARSE_OBJECT       *MinOp = NULL;
    ACPI_PARSE_OBJECT       *MaxOp = NULL;
    ACPI_PARSE_OBJECT       *LengthOp = NULL;
    ACPI_PARSE_OBJECT       *AlignOp = NULL;
    ASL_RESOURCE_NODE       *Rnode;
    UINT32                  CurrentByteOffset;
    UINT32                  i;


    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
    CurrentByteOffset = Info->CurrentByteOffset;
    Rnode = RsAllocateResourceNode (sizeof (AML_RESOURCE_IO));

    Descriptor = Rnode->Buffer;
    Descriptor->Io.DescriptorType =
        ACPI_RESOURCE_NAME_IO | ASL_RDESC_IO_SIZE;

    /* Process all child initialization nodes */

    for (i = 0; InitializerOp; i++)
    {
        switch (i)
        {
        case 0: /* Decode size */

            RsSetFlagBits (&Descriptor->Io.Flags, InitializerOp, 0, 1);
            RsCreateBitField (InitializerOp, ACPI_RESTAG_DECODE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Io.Flags), 0);
            break;

        case 1:  /* Min Address */

            Descriptor->Io.Minimum =
                (UINT16) InitializerOp->Asl.Value.Integer;
            RsCreateWordField (InitializerOp, ACPI_RESTAG_MINADDR,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Io.Minimum));
            MinOp = InitializerOp;
            break;

        case 2: /* Max Address */

            Descriptor->Io.Maximum =
                (UINT16) InitializerOp->Asl.Value.Integer;
            RsCreateWordField (InitializerOp, ACPI_RESTAG_MAXADDR,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Io.Maximum));
            MaxOp = InitializerOp;
            break;

        case 3: /* Alignment */

            Descriptor->Io.Alignment =
                (UINT8) InitializerOp->Asl.Value.Integer;
            RsCreateByteField (InitializerOp, ACPI_RESTAG_ALIGNMENT,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Io.Alignment));
            AlignOp = InitializerOp;
            break;

        case 4: /* Length */

            Descriptor->Io.AddressLength =
                (UINT8) InitializerOp->Asl.Value.Integer;
            RsCreateByteField (InitializerOp, ACPI_RESTAG_LENGTH,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Io.AddressLength));
            LengthOp = InitializerOp;
            break;

        case 5: /* Name */

            UtAttachNamepathToOwner (Info->DescriptorTypeOp, InitializerOp);
            break;

        default:

            AslError (ASL_ERROR, ASL_MSG_RESOURCE_LIST, InitializerOp, NULL);
            break;
        }

        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
    }

    /* Validate the Min/Max/Len/Align values */

    RsSmallAddressCheck (ACPI_RESOURCE_NAME_IO,
        Descriptor->Io.Minimum,
        Descriptor->Io.Maximum,
        Descriptor->Io.AddressLength,
        Descriptor->Io.Alignment,
        MinOp, MaxOp, LengthOp, AlignOp, Info->DescriptorTypeOp);

    return (Rnode);
}


/*******************************************************************************
 *
 * FUNCTION:    RsDoIrqDescriptor
 *
 * PARAMETERS:  Info                - Parse Op and resource template offset
 *
 * RETURN:      Completed resource node
 *
 * DESCRIPTION: Construct a short "IRQ" descriptor
 *
 ******************************************************************************/

ASL_RESOURCE_NODE *
RsDoIrqDescriptor (
    ASL_RESOURCE_INFO       *Info)
{
    AML_RESOURCE            *Descriptor;
    ACPI_PARSE_OBJECT       *InitializerOp;
    ASL_RESOURCE_NODE       *Rnode;
    UINT32                  Interrupts = 0;
    UINT16                  IrqMask = 0;
    UINT32                  CurrentByteOffset;
    UINT32                  i;


    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
    CurrentByteOffset = Info->CurrentByteOffset;
    Rnode = RsAllocateResourceNode (sizeof (AML_RESOURCE_IRQ));

    /* Length = 3 (with flag byte) */

    Descriptor = Rnode->Buffer;
    Descriptor->Irq.DescriptorType =
        ACPI_RESOURCE_NAME_IRQ | (ASL_RDESC_IRQ_SIZE + 0x01);

    /* Process all child initialization nodes */

    for (i = 0; InitializerOp; i++)
    {
        switch (i)
        {
        case 0: /* Interrupt Type (or Mode - edge/level) */

            RsSetFlagBits (&Descriptor->Irq.Flags, InitializerOp, 0, 1);
            RsCreateBitField (InitializerOp, ACPI_RESTAG_INTERRUPTTYPE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Irq.Flags), 0);
            break;

        case 1: /* Interrupt Level (or Polarity - Active high/low) */

            RsSetFlagBits (&Descriptor->Irq.Flags, InitializerOp, 3, 0);
            RsCreateBitField (InitializerOp, ACPI_RESTAG_INTERRUPTLEVEL,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Irq.Flags), 3);
            break;

        case 2: /* Share Type - Default: exclusive (0) */

            RsSetFlagBits (&Descriptor->Irq.Flags, InitializerOp, 4, 0);
            RsCreateBitField (InitializerOp, ACPI_RESTAG_INTERRUPTSHARE,
                CurrentByteOffset + ASL_RESDESC_OFFSET (Irq.Flags), 4);
            break;

        case 3: /* Name */

            UtAttachNamepathToOwner (Info->DescriptorTypeOp, InitializerOp);
            break;

        default:

            /* All IRQ bytes are handled here, after the flags and name */

            if (InitializerOp->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)
            {
                /* Up to 16 interrupts can be specified in the list */

                Interrupts++;
                if (Interrupts > 16)
                {
                    AslError (ASL_ERROR, ASL_MSG_INTERRUPT_LIST,
                        InitializerOp, NULL);
                    return (Rnode);
                }

                /* Only interrupts 0-15 are allowed (mask is 16 bits) */

                if (InitializerOp->Asl.Value.Integer > 15)
                {
                    AslError (ASL_ERROR, ASL_MSG_INTERRUPT_NUMBER,
                        InitializerOp, NULL);
                }
                else
                {
                    IrqMask |= (1 << (UINT8) InitializerOp->Asl.Value.Integer);
                }
            }

            /* Case 4: First IRQ value in list */

            if (i == 4)
            {
                /* Check now for duplicates in list */

                RsCheckListForDuplicates (InitializerOp);

                /* Create a named field at the start of the list */

                RsCreateWordField (InitializerOp, ACPI_RESTAG_INTERRUPT,
                    CurrentByteOffset + ASL_RESDESC_OFFSET (Irq.IrqMask));
            }
            break;
        }

        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
    }

    /* Now we can set the channel mask */

    Descriptor->Irq.IrqMask = IrqMask;
    return (Rnode);
}


/*******************************************************************************
 *
 * FUNCTION:    RsDoIrqNoFlagsDescriptor
 *
 * PARAMETERS:  Info                - Parse Op and resource template offset
 *
 * RETURN:      Completed resource node
 *
 * DESCRIPTION: Construct a short "IRQNoFlags" descriptor
 *
 ******************************************************************************/

ASL_RESOURCE_NODE *
RsDoIrqNoFlagsDescriptor (
    ASL_RESOURCE_INFO       *Info)
{
    AML_RESOURCE            *Descriptor;
    ACPI_PARSE_OBJECT       *InitializerOp;
    ASL_RESOURCE_NODE       *Rnode;
    UINT16                  IrqMask = 0;
    UINT32                  Interrupts = 0;
    UINT32                  CurrentByteOffset;
    UINT32                  i;


    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
    CurrentByteOffset = Info->CurrentByteOffset;
    Rnode = RsAllocateResourceNode (sizeof (AML_RESOURCE_IRQ_NOFLAGS));

    Descriptor = Rnode->Buffer;
    Descriptor->Irq.DescriptorType =
        ACPI_RESOURCE_NAME_IRQ | ASL_RDESC_IRQ_SIZE;

    /* Process all child initialization nodes */

    for (i = 0; InitializerOp; i++)
    {
        switch (i)
        {
        case 0: /* Name */

            UtAttachNamepathToOwner (Info->DescriptorTypeOp, InitializerOp);
            break;

        default:

            /* IRQ bytes are handled here, after the flags and name */

            if (InitializerOp->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)
            {
                /* Up to 16 interrupts can be specified in the list */

                Interrupts++;
                if (Interrupts > 16)
                {
                    AslError (ASL_ERROR, ASL_MSG_INTERRUPT_LIST,
                        InitializerOp, NULL);
                    return (Rnode);
                }

                /* Only interrupts 0-15 are allowed (mask is 16 bits) */

                if (InitializerOp->Asl.Value.Integer > 15)
                {
                    AslError (ASL_ERROR, ASL_MSG_INTERRUPT_NUMBER,
                        InitializerOp, NULL);
                }
                else
                {
                    IrqMask |= (1 << ((UINT8) InitializerOp->Asl.Value.Integer));
                }
            }

            /* Case 1: First IRQ value in list */

            if (i == 1)
            {
                /* Check now for duplicates in list */

                RsCheckListForDuplicates (InitializerOp);

                /* Create a named field at the start of the list */

                RsCreateWordField (InitializerOp, ACPI_RESTAG_INTERRUPT,
                    CurrentByteOffset + ASL_RESDESC_OFFSET (Irq.IrqMask));
            }
            break;
        }

        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
    }

    /* Now we can set the interrupt mask */

    Descriptor->Irq.IrqMask = IrqMask;
    return (Rnode);
}