xref: /freebsd-10.0-release/sys/contrib/dev/acpica/common/dmtable.c

/******************************************************************************
 *
 * Module Name: dmtable - Support for ACPI tables that contain no AML code
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 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.
 *
 *****************************************************************************/

#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acdisasm.h>
#include <contrib/dev/acpica/include/actables.h>
#include <contrib/dev/acpica/compiler/aslcompiler.h>
#include <contrib/dev/acpica/compiler/dtcompiler.h>

/* This module used for application-level code only */

#define _COMPONENT          ACPI_CA_DISASSEMBLER
        ACPI_MODULE_NAME    ("dmtable")

/* Local Prototypes */

static void
AcpiDmCheckAscii (
    UINT8                   *Target,
    char                    *RepairedName,
    UINT32                  Count);


/* These tables map a subtable type to a description string */

static const char           *AcpiDmAsfSubnames[] =
{
    "ASF Information",
    "ASF Alerts",
    "ASF Remote Control",
    "ASF RMCP Boot Options",
    "ASF Address",
    "Unknown SubTable Type"         /* Reserved */
};

static const char           *AcpiDmDmarSubnames[] =
{
    "Hardware Unit Definition",
    "Reserved Memory Region",
    "Root Port ATS Capability",
    "Remapping Hardware Static Affinity",
    "Unknown SubTable Type"         /* Reserved */
};

static const char           *AcpiDmEinjActions[] =
{
    "Begin Operation",
    "Get Trigger Table",
    "Set Error Type",
    "Get Error Type",
    "End Operation",
    "Execute Operation",
    "Check Busy Status",
    "Get Command Status",
    "Unknown Action"
};

static const char           *AcpiDmEinjInstructions[] =
{
    "Read Register",
    "Read Register Value",
    "Write Register",
    "Write Register Value",
    "Noop",
    "Unknown Instruction"
};

static const char           *AcpiDmErstActions[] =
{
    "Begin Write Operation",
    "Begin Read Operation",
    "Begin Clear Operation",
    "End Operation",
    "Set Record Offset",
    "Execute Operation",
    "Check Busy Status",
    "Get Command Status",
    "Get Record Identifier",
    "Set Record Identifier",
    "Get Record Count",
    "Begin Dummy Write",
    "Unused/Unknown Action",
    "Get Error Address Range",
    "Get Error Address Length",
    "Get Error Attributes",
    "Unknown Action"
};

static const char           *AcpiDmErstInstructions[] =
{
    "Read Register",
    "Read Register Value",
    "Write Register",
    "Write Register Value",
    "Noop",
    "Load Var1",
    "Load Var2",
    "Store Var1",
    "Add",
    "Subtract",
    "Add Value",
    "Subtract Value",
    "Stall",
    "Stall While True",
    "Skip Next If True",
    "GoTo",
    "Set Source Address",
    "Set Destination Address",
    "Move Data",
    "Unknown Instruction"
};

static const char           *AcpiDmHestSubnames[] =
{
    "IA-32 Machine Check Exception",
    "IA-32 Corrected Machine Check",
    "IA-32 Non-Maskable Interrupt",
    "Unknown SubTable Type",        /* 3 - Reserved */
    "Unknown SubTable Type",        /* 4 - Reserved */
    "Unknown SubTable Type",        /* 5 - Reserved */
    "PCI Express Root Port AER",
    "PCI Express AER (AER Endpoint)",
    "PCI Express/PCI-X Bridge AER",
    "Generic Hardware Error Source",
    "Unknown SubTable Type"         /* Reserved */
};

static const char           *AcpiDmHestNotifySubnames[] =
{
    "Polled",
    "External Interrupt",
    "Local Interrupt",
    "SCI",
    "NMI",
    "Unknown Notify Type"           /* Reserved */
};

static const char           *AcpiDmMadtSubnames[] =
{
    "Processor Local APIC",         /* ACPI_MADT_TYPE_LOCAL_APIC */
    "I/O APIC",                     /* ACPI_MADT_TYPE_IO_APIC */
    "Interrupt Source Override",    /* ACPI_MADT_TYPE_INTERRUPT_OVERRIDE */
    "NMI Source",                   /* ACPI_MADT_TYPE_NMI_SOURCE */
    "Local APIC NMI",               /* ACPI_MADT_TYPE_LOCAL_APIC_NMI */
    "Local APIC Address Override",  /* ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE */
    "I/O SAPIC",                    /* ACPI_MADT_TYPE_IO_SAPIC */
    "Local SAPIC",                  /* ACPI_MADT_TYPE_LOCAL_SAPIC */
    "Platform Interrupt Sources",   /* ACPI_MADT_TYPE_INTERRUPT_SOURCE */
    "Processor Local x2APIC",       /* ACPI_MADT_TYPE_LOCAL_X2APIC */
    "Local x2APIC NMI",             /* ACPI_MADT_TYPE_LOCAL_X2APIC_NMI */
    "Unknown SubTable Type"         /* Reserved */
};

static const char           *AcpiDmSratSubnames[] =
{
    "Processor Local APIC/SAPIC Affinity",
    "Memory Affinity",
    "Processor Local x2APIC Affinity",
    "Unknown SubTable Type"         /* Reserved */
};

static const char           *AcpiDmIvrsSubnames[] =
{
    "Hardware Definition Block",
    "Memory Definition Block",
    "Unknown SubTable Type"         /* Reserved */
};


#define ACPI_FADT_PM_RESERVED       8

static const char           *AcpiDmFadtProfiles[] =
{
    "Unspecified",
    "Desktop",
    "Mobile",
    "Workstation",
    "Enterprise Server",
    "SOHO Server",
    "Appliance PC",
    "Performance Server",
    "Unknown Profile Type"
};

#define ACPI_GAS_WIDTH_RESERVED     5

static const char           *AcpiDmGasAccessWidth[] =
{
    "Undefined/Legacy",
    "Byte Access:8",
    "Word Access:16",
    "DWord Access:32",
    "QWord Access:64",
    "Unknown Width Encoding"
};


/*******************************************************************************
 *
 * ACPI Table Data, indexed by signature.
 *
 * Each entry contains: Signature, Table Info, Handler, DtHandler,
 *  Template, Description
 *
 * Simple tables have only a TableInfo structure, complex tables have a
 * handler. This table must be NULL terminated. RSDP and FACS are
 * special-cased elsewhere.
 *
 ******************************************************************************/

ACPI_DMTABLE_DATA    AcpiDmTableData[] =
{
    {ACPI_SIG_ASF,  NULL,                   AcpiDmDumpAsf,  DtCompileAsf,   TemplateAsf,    "Alert Standard Format table"},
    {ACPI_SIG_BOOT, AcpiDmTableInfoBoot,    NULL,           NULL,           TemplateBoot,   "Simple Boot Flag Table"},
    {ACPI_SIG_BERT, AcpiDmTableInfoBert,    NULL,           NULL,           TemplateBert,   "Boot Error Record Table"},
    {ACPI_SIG_CPEP, NULL,                   AcpiDmDumpCpep, DtCompileCpep,  TemplateCpep,   "Corrected Platform Error Polling table"},
    {ACPI_SIG_DBGP, AcpiDmTableInfoDbgp,    NULL,           NULL,           TemplateDbgp,   "Debug Port table"},
    {ACPI_SIG_DMAR, NULL,                   AcpiDmDumpDmar, DtCompileDmar,  TemplateDmar,   "DMA Remapping table"},
    {ACPI_SIG_ECDT, AcpiDmTableInfoEcdt,    NULL,           NULL,           TemplateEcdt,   "Embedded Controller Boot Resources Table"},
    {ACPI_SIG_EINJ, NULL,                   AcpiDmDumpEinj, DtCompileEinj,  TemplateEinj,   "Error Injection table"},
    {ACPI_SIG_ERST, NULL,                   AcpiDmDumpErst, DtCompileErst,  TemplateErst,   "Error Record Serialization Table"},
    {ACPI_SIG_FADT, NULL,                   AcpiDmDumpFadt, DtCompileFadt,  TemplateFadt,   "Fixed ACPI Description Table"},
    {ACPI_SIG_HEST, NULL,                   AcpiDmDumpHest, DtCompileHest,  TemplateHest,   "Hardware Error Source Table"},
    {ACPI_SIG_HPET, AcpiDmTableInfoHpet,    NULL,           NULL,           TemplateHpet,   "High Precision Event Timer table"},
    {ACPI_SIG_IVRS, NULL,                   AcpiDmDumpIvrs, DtCompileIvrs,  TemplateIvrs,   "I/O Virtualization Reporting Structure"},
    {ACPI_SIG_MADT, NULL,                   AcpiDmDumpMadt, DtCompileMadt,  TemplateMadt,   "Multiple APIC Description Table"},
    {ACPI_SIG_MCFG, NULL,                   AcpiDmDumpMcfg, DtCompileMcfg,  TemplateMcfg,   "Memory Mapped Configuration table"},
    {ACPI_SIG_MCHI, AcpiDmTableInfoMchi,    NULL,           NULL,           TemplateMchi,   "Management Controller Host Interface table"},
    {ACPI_SIG_MSCT, NULL,                   AcpiDmDumpMsct, DtCompileMsct,  TemplateMsct,   "Maximum System Characteristics Table"},
    {ACPI_SIG_RSDT, NULL,                   AcpiDmDumpRsdt, DtCompileRsdt,  TemplateRsdt,   "Root System Description Table"},
    {ACPI_SIG_SBST, AcpiDmTableInfoSbst,    NULL,           NULL,           TemplateSbst,   "Smart Battery Specification Table"},
    {ACPI_SIG_SLIC, AcpiDmTableInfoSlic,    NULL,           NULL,           NULL,           "Software Licensing Description Table"},
    {ACPI_SIG_SLIT, NULL,                   AcpiDmDumpSlit, DtCompileSlit,  TemplateSlit,   "System Locality Information Table"},
    {ACPI_SIG_SPCR, AcpiDmTableInfoSpcr,    NULL,           NULL,           TemplateSpcr,   "Serial Port Console Redirection table"},
    {ACPI_SIG_SPMI, AcpiDmTableInfoSpmi,    NULL,           NULL,           TemplateSpmi,   "Server Platform Management Interface table"},
    {ACPI_SIG_SRAT, NULL,                   AcpiDmDumpSrat, DtCompileSrat,  TemplateSrat,   "System Resource Affinity Table"},
    {ACPI_SIG_TCPA, AcpiDmTableInfoTcpa,    NULL,           NULL,           TemplateTcpa,   "Trusted Computing Platform Alliance table"},
    {ACPI_SIG_UEFI, AcpiDmTableInfoUefi,    NULL,           NULL,           TemplateUefi,   "UEFI Boot Optimization Table"},
    {ACPI_SIG_WAET, AcpiDmTableInfoWaet,    NULL,           NULL,           TemplateWaet,   "Windows ACPI Emulated Devices Table"},
    {ACPI_SIG_WDAT, NULL,                   AcpiDmDumpWdat, DtCompileWdat,  TemplateWdat,   "Watchdog Action Table"},
    {ACPI_SIG_WDDT, AcpiDmTableInfoWddt,    NULL,           NULL,           TemplateWddt,   "Watchdog Description Table"},
    {ACPI_SIG_WDRT, AcpiDmTableInfoWdrt,    NULL,           NULL,           TemplateWdrt,   "Watchdog Resource Table"},
    {ACPI_SIG_XSDT, NULL,                   AcpiDmDumpXsdt, DtCompileXsdt,  TemplateXsdt,   "Extended System Description Table"},
    {NULL,          NULL,                   NULL,           NULL,           NULL,           NULL}
};


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmGenerateChecksum
 *
 * PARAMETERS:  Table               - Pointer to table to be checksummed
 *              Length              - Length of the table
 *              OriginalChecksum    - Value of the checksum field
 *
 * RETURN:      8 bit checksum of buffer
 *
 * DESCRIPTION: Computes an 8 bit checksum of the table.
 *
 ******************************************************************************/

UINT8
AcpiDmGenerateChecksum (
    void                    *Table,
    UINT32                  Length,
    UINT8                   OriginalChecksum)
{
    UINT8                   Checksum;


    /* Sum the entire table as-is */

    Checksum = AcpiTbChecksum ((UINT8 *) Table, Length);

    /* Subtract off the existing checksum value in the table */

    Checksum = (UINT8) (Checksum - OriginalChecksum);

    /* Compute the final checksum */

    Checksum = (UINT8) (0 - Checksum);
    return (Checksum);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmGetTableData
 *
 * PARAMETERS:  Signature           - ACPI signature (4 chars) to match
 *
 * RETURN:      Pointer to a valid ACPI_DMTABLE_DATA. Null if no match found.
 *
 * DESCRIPTION: Find a match in the global table of supported ACPI tables
 *
 ******************************************************************************/

ACPI_DMTABLE_DATA *
AcpiDmGetTableData (
    char                    *Signature)
{
    ACPI_DMTABLE_DATA       *TableData;


    for (TableData = AcpiDmTableData; TableData->Signature; TableData++)
    {
        if (ACPI_COMPARE_NAME (Signature, TableData->Signature))
        {
            return (TableData);
        }
    }

    return (NULL);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmDumpDataTable
 *
 * PARAMETERS:  Table               - An ACPI table
 *
 * RETURN:      None.
 *
 * DESCRIPTION: Format the contents of an ACPI data table (any table other
 *              than an SSDT or DSDT that does not contain executable AML code)
 *
 ******************************************************************************/

void
AcpiDmDumpDataTable (
    ACPI_TABLE_HEADER       *Table)
{
    ACPI_STATUS             Status;
    ACPI_DMTABLE_DATA       *TableData;
    UINT32                  Length;


    /* Ignore tables that contain AML */

    if (AcpiUtIsAmlTable (Table))
    {
        return;
    }

    /*
     * Handle tables that don't use the common ACPI table header structure.
     * Currently, these are the FACS and RSDP.
     */
    if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_FACS))
    {
        Length = Table->Length;
        AcpiDmDumpTable (Length, 0, Table, 0, AcpiDmTableInfoFacs);
    }
    else if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_RSDP))
    {
        Length = AcpiDmDumpRsdp (Table);
    }
    else
    {
        /*
         * All other tables must use the common ACPI table header, dump it now
         */
        Length = Table->Length;
        Status = AcpiDmDumpTable (Length, 0, Table, 0, AcpiDmTableInfoHeader);
        if (ACPI_FAILURE (Status))
        {
            return;
        }
        AcpiOsPrintf ("\n");

        /* Match signature and dispatch appropriately */

        TableData = AcpiDmGetTableData (Table->Signature);
        if (!TableData)
        {
            if (!ACPI_STRNCMP (Table->Signature, "OEM", 3))
            {
                AcpiOsPrintf ("\n**** OEM-defined ACPI table [%4.4s], unknown contents\n\n",
                    Table->Signature);
            }
            else
            {
                AcpiOsPrintf ("\n**** Unknown ACPI table type [%4.4s]\n\n",
                    Table->Signature);
            }
        }
        else if (TableData->TableHandler)
        {
            /* Complex table, has a handler */

            TableData->TableHandler (Table);
        }
        else if (TableData->TableInfo)
        {
            /* Simple table, just walk the info table */

            AcpiDmDumpTable (Length, 0, Table, 0, TableData->TableInfo);
        }
    }

    if (!Gbl_DoTemplates || Gbl_VerboseTemplates)
    {
        /* Dump the raw table data */

        AcpiOsPrintf ("\nRaw Table Data\n\n");
        AcpiUtDumpBuffer2 (ACPI_CAST_PTR (UINT8, Table), Length, DB_BYTE_DISPLAY);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmLineHeader
 *
 * PARAMETERS:  Offset              - Current byte offset, from table start
 *              ByteLength          - Length of the field in bytes, 0 for flags
 *              Name                - Name of this field
 *              Value               - Optional value, displayed on left of ':'
 *
 * RETURN:      None
 *
 * DESCRIPTION: Utility routines for formatting output lines. Displays the
 *              current table offset in hex and decimal, the field length,
 *              and the field name.
 *
 ******************************************************************************/

void
AcpiDmLineHeader (
    UINT32                  Offset,
    UINT32                  ByteLength,
    char                    *Name)
{

    if (Gbl_DoTemplates && !Gbl_VerboseTemplates) /* Terse template */
    {
        if (ByteLength)
        {
            AcpiOsPrintf ("[%.3d] %34s : ",
                ByteLength, Name);
        }
        else
        {
            AcpiOsPrintf ("%40s : ",
                Name);
        }
    }
    else /* Normal disassembler or verbose template */
    {
        if (ByteLength)
        {
            AcpiOsPrintf ("[%3.3Xh %4.4d% 3d] %28s : ",
                Offset, Offset, ByteLength, Name);
        }
        else
        {
            AcpiOsPrintf ("%43s : ",
                Name);
        }
    }
}

void
AcpiDmLineHeader2 (
    UINT32                  Offset,
    UINT32                  ByteLength,
    char                    *Name,
    UINT32                  Value)
{

    if (Gbl_DoTemplates && !Gbl_VerboseTemplates) /* Terse template */
    {
        if (ByteLength)
        {
            AcpiOsPrintf ("[%.3d] %30s % 3d : ",
                ByteLength, Name, Value);
        }
        else
        {
            AcpiOsPrintf ("%36s % 3d : ",
                Name, Value);
        }
    }
    else /* Normal disassembler or verbose template */
    {
        if (ByteLength)
        {
            AcpiOsPrintf ("[%3.3Xh %4.4d% 3d] %24s % 3d : ",
                Offset, Offset, ByteLength, Name, Value);
        }
        else
        {
            AcpiOsPrintf ("[%3.3Xh %4.4d   ] %24s % 3d : ",
                Offset, Offset, Name, Value);
        }
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmDumpTable
 *
 * PARAMETERS:  TableLength         - Length of the entire ACPI table
 *              TableOffset         - Starting offset within the table for this
 *                                    sub-descriptor (0 if main table)
 *              Table               - The ACPI table
 *              SubtableLength      - Length of this sub-descriptor
 *              Info                - Info table for this ACPI table
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display ACPI table contents by walking the Info table.
 *
 * Note: This function must remain in sync with DtGetFieldLength.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiDmDumpTable (
    UINT32                  TableLength,
    UINT32                  TableOffset,
    void                    *Table,
    UINT32                  SubtableLength,
    ACPI_DMTABLE_INFO       *Info)
{
    UINT8                   *Target;
    UINT32                  CurrentOffset;
    UINT32                  ByteLength;
    UINT8                   Temp8;
    UINT16                  Temp16;
    ACPI_DMTABLE_DATA       *TableData;
    const char              *Name;
    BOOLEAN                 LastOutputBlankLine = FALSE;
    char                    RepairedName[8];


    if (!Info)
    {
        AcpiOsPrintf ("Display not implemented\n");
        return (AE_NOT_IMPLEMENTED);
    }

    /* Walk entire Info table; Null name terminates */

    for (; Info->Name; Info++)
    {
        /*
         * Target points to the field within the ACPI Table. CurrentOffset is
         * the offset of the field from the start of the main table.
         */
        Target = ACPI_ADD_PTR (UINT8, Table, Info->Offset);
        CurrentOffset = TableOffset + Info->Offset;

        /* Check for beyond EOT or beyond subtable end */

        if ((CurrentOffset >= TableLength) ||
            (SubtableLength && (Info->Offset >= SubtableLength)))
        {
            AcpiOsPrintf ("**** ACPI table terminates in the middle of a data structure!\n");
            return (AE_BAD_DATA);
        }

        /* Generate the byte length for this field */

        switch (Info->Opcode)
        {
        case ACPI_DMT_UINT8:
        case ACPI_DMT_CHKSUM:
        case ACPI_DMT_SPACEID:
        case ACPI_DMT_ACCWIDTH:
        case ACPI_DMT_IVRS:
        case ACPI_DMT_MADT:
        case ACPI_DMT_SRAT:
        case ACPI_DMT_ASF:
        case ACPI_DMT_HESTNTYP:
        case ACPI_DMT_FADTPM:
        case ACPI_DMT_EINJACT:
        case ACPI_DMT_EINJINST:
        case ACPI_DMT_ERSTACT:
        case ACPI_DMT_ERSTINST:
            ByteLength = 1;
            break;
        case ACPI_DMT_UINT16:
        case ACPI_DMT_DMAR:
        case ACPI_DMT_HEST:
            ByteLength = 2;
            break;
        case ACPI_DMT_UINT24:
            ByteLength = 3;
            break;
        case ACPI_DMT_UINT32:
        case ACPI_DMT_NAME4:
        case ACPI_DMT_SIG:
            ByteLength = 4;
            break;
        case ACPI_DMT_NAME6:
            ByteLength = 6;
            break;
        case ACPI_DMT_UINT56:
            ByteLength = 7;
            break;
        case ACPI_DMT_UINT64:
        case ACPI_DMT_NAME8:
            ByteLength = 8;
            break;
        case ACPI_DMT_BUF16:
            ByteLength = 16;
            break;
        case ACPI_DMT_STRING:
            ByteLength = ACPI_STRLEN (ACPI_CAST_PTR (char, Target)) + 1;
            break;
        case ACPI_DMT_GAS:
            if (!LastOutputBlankLine)
            {
                AcpiOsPrintf ("\n");
                LastOutputBlankLine = TRUE;
            }
            ByteLength = sizeof (ACPI_GENERIC_ADDRESS);
            break;
        case ACPI_DMT_HESTNTFY:
            if (!LastOutputBlankLine)
            {
                AcpiOsPrintf ("\n");
                LastOutputBlankLine = TRUE;
            }
            ByteLength = sizeof (ACPI_HEST_NOTIFY);
            break;
        default:
            ByteLength = 0;
            break;
        }

        if (CurrentOffset + ByteLength > TableLength)
        {
            AcpiOsPrintf ("**** ACPI table terminates in the middle of a data structure!\n");
            return (AE_BAD_DATA);
        }

        /* Start a new line and decode the opcode */

        AcpiDmLineHeader (CurrentOffset, ByteLength, Info->Name);

        switch (Info->Opcode)
        {
        /* Single-bit Flag fields. Note: Opcode is the bit position */

        case ACPI_DMT_FLAG0:
        case ACPI_DMT_FLAG1:
        case ACPI_DMT_FLAG2:
        case ACPI_DMT_FLAG3:
        case ACPI_DMT_FLAG4:
        case ACPI_DMT_FLAG5:
        case ACPI_DMT_FLAG6:
        case ACPI_DMT_FLAG7:

            AcpiOsPrintf ("%1.1X\n", (*Target >> Info->Opcode) & 0x01);
            break;

        /* 2-bit Flag fields */

        case ACPI_DMT_FLAGS0:

            AcpiOsPrintf ("%1.1X\n", *Target & 0x03);
            break;

        case ACPI_DMT_FLAGS2:

            AcpiOsPrintf ("%1.1X\n", (*Target >> 2) & 0x03);
            break;

        /* Standard Data Types */

        case ACPI_DMT_UINT8:

            AcpiOsPrintf ("%2.2X\n", *Target);
            break;

        case ACPI_DMT_UINT16:

            AcpiOsPrintf ("%4.4X\n", ACPI_GET16 (Target));
            break;

        case ACPI_DMT_UINT24:

            AcpiOsPrintf ("%2.2X%2.2X%2.2X\n",
                *Target, *(Target + 1), *(Target + 2));
            break;

        case ACPI_DMT_UINT32:

            AcpiOsPrintf ("%8.8X\n", ACPI_GET32 (Target));
            break;

        case ACPI_DMT_UINT56:

            for (Temp8 = 0; Temp8 < 7; Temp8++)
            {
                AcpiOsPrintf ("%2.2X", Target[Temp8]);
            }
            AcpiOsPrintf ("\n");
            break;

        case ACPI_DMT_UINT64:

            AcpiOsPrintf ("%8.8X%8.8X\n",
                ACPI_FORMAT_UINT64 (ACPI_GET64 (Target)));
            break;

        case ACPI_DMT_BUF16:

            /* Buffer of length 16 */

            for (Temp8 = 0; Temp8 < 16; Temp8++)
            {
                AcpiOsPrintf ("%2.2X", Target[Temp8]);
                if ((Temp8 + 1) < 16)
                {
                    AcpiOsPrintf (",");
                }
            }
            AcpiOsPrintf ("\n");
            break;

        case ACPI_DMT_STRING:

            AcpiOsPrintf ("\"%s\"\n", ACPI_CAST_PTR (char, Target));
            break;

        /* Fixed length ASCII name fields */

        case ACPI_DMT_SIG:

            AcpiDmCheckAscii (Target, RepairedName, 4);
            AcpiOsPrintf ("\"%.4s\"    ", RepairedName);
            TableData = AcpiDmGetTableData (ACPI_CAST_PTR (char, Target));
            if (TableData)
            {
                AcpiOsPrintf ("/* %s */", TableData->Name);
            }
            AcpiOsPrintf ("\n");
            break;

        case ACPI_DMT_NAME4:

            AcpiDmCheckAscii (Target, RepairedName, 4);
            AcpiOsPrintf ("\"%.4s\"\n", RepairedName);
            break;

        case ACPI_DMT_NAME6:

            AcpiDmCheckAscii (Target, RepairedName, 6);
            AcpiOsPrintf ("\"%.6s\"\n", RepairedName);
            break;

        case ACPI_DMT_NAME8:

            AcpiDmCheckAscii (Target, RepairedName, 8);
            AcpiOsPrintf ("\"%.8s\"\n", RepairedName);
            break;

        /* Special Data Types */

        case ACPI_DMT_CHKSUM:

            /* Checksum, display and validate */

            AcpiOsPrintf ("%2.2X", *Target);
            Temp8 = AcpiDmGenerateChecksum (Table,
                        ACPI_CAST_PTR (ACPI_TABLE_HEADER, Table)->Length,
                        ACPI_CAST_PTR (ACPI_TABLE_HEADER, Table)->Checksum);
            if (Temp8 != ACPI_CAST_PTR (ACPI_TABLE_HEADER, Table)->Checksum)
            {
                AcpiOsPrintf (
                    "     /* Incorrect checksum, should be %2.2X */", Temp8);
            }
            AcpiOsPrintf ("\n");
            break;

        case ACPI_DMT_SPACEID:

            /* Address Space ID */

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiUtGetRegionName (*Target));
            break;

        case ACPI_DMT_ACCWIDTH:

            /* Encoded Access Width */

            Temp8 = *Target;
            if (Temp8 > ACPI_GAS_WIDTH_RESERVED)
            {
                Temp8 = ACPI_GAS_WIDTH_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", Temp8, AcpiDmGasAccessWidth[Temp8]);
            break;

        case ACPI_DMT_GAS:

            /* Generic Address Structure */

            AcpiOsPrintf ("<Generic Address Structure>\n");
            AcpiDmDumpTable (TableLength, CurrentOffset, Target,
                sizeof (ACPI_GENERIC_ADDRESS), AcpiDmTableInfoGas);
            AcpiOsPrintf ("\n");
            LastOutputBlankLine = TRUE;
            break;

        case ACPI_DMT_ASF:

            /* ASF subtable types */

            Temp16 = (UINT16) ((*Target) & 0x7F);  /* Top bit can be zero or one */
            if (Temp16 > ACPI_ASF_TYPE_RESERVED)
            {
                Temp16 = ACPI_ASF_TYPE_RESERVED;
            }

            AcpiOsPrintf ("%2.2X <%s>\n", *Target, AcpiDmAsfSubnames[Temp16]);
            break;

        case ACPI_DMT_DMAR:

            /* DMAR subtable types */

            Temp16 = ACPI_GET16 (Target);
            if (Temp16 > ACPI_DMAR_TYPE_RESERVED)
            {
                Temp16 = ACPI_DMAR_TYPE_RESERVED;
            }

            AcpiOsPrintf ("%4.4X <%s>\n", ACPI_GET16 (Target), AcpiDmDmarSubnames[Temp16]);
            break;

        case ACPI_DMT_EINJACT:

            /* EINJ Action types */

            Temp8 = *Target;
            if (Temp8 > ACPI_EINJ_ACTION_RESERVED)
            {
                Temp8 = ACPI_EINJ_ACTION_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiDmEinjActions[Temp8]);
            break;

        case ACPI_DMT_EINJINST:

            /* EINJ Instruction types */

            Temp8 = *Target;
            if (Temp8 > ACPI_EINJ_INSTRUCTION_RESERVED)
            {
                Temp8 = ACPI_EINJ_INSTRUCTION_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiDmEinjInstructions[Temp8]);
            break;

        case ACPI_DMT_ERSTACT:

            /* ERST Action types */

            Temp8 = *Target;
            if (Temp8 > ACPI_ERST_ACTION_RESERVED)
            {
                Temp8 = ACPI_ERST_ACTION_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiDmErstActions[Temp8]);
            break;

        case ACPI_DMT_ERSTINST:

            /* ERST Instruction types */

            Temp8 = *Target;
            if (Temp8 > ACPI_ERST_INSTRUCTION_RESERVED)
            {
                Temp8 = ACPI_ERST_INSTRUCTION_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiDmErstInstructions[Temp8]);
            break;

        case ACPI_DMT_HEST:

            /* HEST subtable types */

            Temp16 = ACPI_GET16 (Target);
            if (Temp16 > ACPI_HEST_TYPE_RESERVED)
            {
                Temp16 = ACPI_HEST_TYPE_RESERVED;
            }

            AcpiOsPrintf ("%4.4X (%s)\n", ACPI_GET16 (Target), AcpiDmHestSubnames[Temp16]);
            break;

        case ACPI_DMT_HESTNTFY:

            AcpiOsPrintf ("<Hardware Error Notification Structure>\n");
            AcpiDmDumpTable (TableLength, CurrentOffset, Target,
                sizeof (ACPI_HEST_NOTIFY), AcpiDmTableInfoHestNotify);
            AcpiOsPrintf ("\n");
            LastOutputBlankLine = TRUE;
            break;

        case ACPI_DMT_HESTNTYP:

            /* HEST Notify types */

            Temp8 = *Target;
            if (Temp8 > ACPI_HEST_NOTIFY_RESERVED)
            {
                Temp8 = ACPI_HEST_NOTIFY_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiDmHestNotifySubnames[Temp8]);
            break;

        case ACPI_DMT_MADT:

            /* MADT subtable types */

            Temp8 = *Target;
            if (Temp8 > ACPI_MADT_TYPE_RESERVED)
            {
                Temp8 = ACPI_MADT_TYPE_RESERVED;
            }

            AcpiOsPrintf ("%2.2X <%s>\n", *Target, AcpiDmMadtSubnames[Temp8]);
            break;

        case ACPI_DMT_SRAT:

            /* SRAT subtable types */

            Temp8 = *Target;
            if (Temp8 > ACPI_SRAT_TYPE_RESERVED)
            {
                Temp8 = ACPI_SRAT_TYPE_RESERVED;
            }

            AcpiOsPrintf ("%2.2X <%s>\n", *Target, AcpiDmSratSubnames[Temp8]);
            break;

        case ACPI_DMT_FADTPM:

            /* FADT Preferred PM Profile names */

            Temp8 = *Target;
            if (Temp8 > ACPI_FADT_PM_RESERVED)
            {
                Temp8 = ACPI_FADT_PM_RESERVED;
            }

            AcpiOsPrintf ("%2.2X (%s)\n", *Target, AcpiDmFadtProfiles[Temp8]);
            break;

        case ACPI_DMT_IVRS:

            /* IVRS subtable types */

            Temp8 = *Target;
            switch (Temp8)
            {
            case ACPI_IVRS_TYPE_HARDWARE:
                Name = AcpiDmIvrsSubnames[0];
                break;

            case ACPI_IVRS_TYPE_MEMORY1:
            case ACPI_IVRS_TYPE_MEMORY2:
            case ACPI_IVRS_TYPE_MEMORY3:
                Name = AcpiDmIvrsSubnames[1];
                break;

            default:
                Name = AcpiDmIvrsSubnames[2];
                break;
            }

            AcpiOsPrintf ("%2.2X <%s>\n", *Target, Name);
            break;

        case ACPI_DMT_EXIT:
            return (AE_OK);

        default:
            ACPI_ERROR ((AE_INFO,
                "**** Invalid table opcode [0x%X] ****\n", Info->Opcode));
            return (AE_SUPPORT);
        }
    }

    if (TableOffset && !SubtableLength)
    {
        /* If this table is not the main table, subtable must have valid length */

        AcpiOsPrintf ("Invalid zero length subtable\n");
        return (AE_BAD_DATA);
    }

    return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmCheckAscii
 *
 * PARAMETERS:  Name                - Ascii string
 *              Count               - Number of characters to check
 *
 * RETURN:      None
 *
 * DESCRIPTION: Ensure that the requested number of characters are printable
 *              Ascii characters. Sets non-printable and null chars to <space>.
 *
 ******************************************************************************/

static void
AcpiDmCheckAscii (
    UINT8                   *Name,
    char                    *RepairedName,
    UINT32                  Count)
{
    UINT32                  i;


    for (i = 0; i < Count; i++)
    {
        RepairedName[i] = (char) Name[i];

        if (!Name[i])
        {
            return;
        }
        if (!isprint (Name[i]))
        {
            RepairedName[i] = ' ';
        }
    }
}