Programming Interface Information: The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM.

#### MRIODATS

Prolog
Control Block Contents
Cross Reference

#### MRIODATS Prolog

####

####

     DSECT NAME - IODATS
     FUNCTION - Map a Monitor record.
     LOCATED BY -
            Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRIODATS
     DESCRIPTIVE NAME - Monitor Event Record
                        Domain 6 - I/O Domain
                        Record 9 - Attach Shared Device
     DESCRIPTION - Indicates that a Shared device has been attached
                   to the system.

    MRIODATS Control Block Contents

    Offsets
    Dec Hex  Type       Len  Name (Dim)             Description

      0   0  Structure   44  IODATS                 Start of monitor record
      0   0  Character    0  IODATS_MRHDR           Record header. See MRRECHDR
                                                    for details.
      0   0  Character   20  MRHDR
      0   0  Unsigned     2  MRHDRLEN               record length in bytes
      2   2  Unsigned     2  MRHDRZER               field of zeros
      4   4  Unsigned     1  MRHDRDM                domain identifier
      5   5  Unsigned     1  *
      6   6  Unsigned     2  MRHDRRC                record identifier
      8   8  Character    8  MRHDRTOD               Time at which this record was
                                                    built. In time-of-day (TOD)
                                                    clock format. See IBM System
                                                    370 XA Principle of Operation
                                                    for explanation of format.
     16  10  Character    4  *
     20  14  Character    0  MRHDR_END              End of header
     20  14  Bitstring    1  IODATS_RDEVTYPE        Device type code. Unique for
                                                    each device within the class in
                                                    IODATS_RDEVCLAS.
     21  15  Bitstring    1  IODATS_RDEVCLAS        Device class code. Unique for
                                                    each class.
     22  16  Unsigned     2  IODATS_RDEVDVID        Device type number in packed
                                                    decimal. See IODATS_RDEVDVIV
                                                    for its source.
     24  18  Bitstring    1  IODATS_CALMODLN        Device model identifier. See
                                                    IODATS_RDEVDVIV flag for its
                                                    source.
     25  19  Bitstring    1  IODATS_RDEVLPM         Logical path mask
     26  1A  Unsigned     2  IODATS_RDEVDEV         Device number in packed
                                                    decimal
     28  1C  Unsigned     4  IODATS_RDEVSID         Host subchannel id
     32  20  Character    8  IODATS_RDEVCHPS        Eight channel path ids for
                                                    this device
     40  28  Unsigned     2  IODATS_RDEVCUID        control unit id in packed
                                                    decimal. Applicable only when
                                                    IODATS_RDEVCUIV = on.
     42  2A  Unsigned     1  IODATS_RDEVCUMN        Control unit model
                                                    identifier. Applicable only
                                                    when IODATS_RDEVCUIV = on.
     43  2B  Bitstring    1  IODATS_CALFLAGS        Flag byte
              1... ....      IODATS_RDEVDVIV        OFF = device model number (in
                                                    IODATS_RDEVDVID) and model
                                                    identifier (in IODATS_CALMODLN)
                                                    were provided by user through
                                                    the RDEVICE macro or device
                                                    sensing at IPL time. ON =
                                                    device type number and model
                                                    identifier were provided by the
                                                    device at device initialization
                                                    time.
              .1.. ....      IODATS_RDEVCUIV        When on, IODATS_RDEVCUID and
                                                    IODATS_RDEVCUMN contain valid
                                                    control unit information
              ..1. ....      *
              ...1 ....      *
              .... 1...      *
              .... .1..      *
              .... ..1.      *
              .... ...1      *
     44  2C  Character    0  IODATS_END

    MRIODATS Cross Reference

                          Hex           Hex
    Name                 Offset Length Value

    IODATS                     0     44
    IODATS_CALFLAGS           2B      1
    IODATS_CALMODLN           18      1
    IODATS_END                2C      0
    IODATS_MRHDR               0      0
    IODATS_RDEVCHPS           20      8
    IODATS_RDEVCLAS           15      1
    IODATS_RDEVCUID           28      2
    IODATS_RDEVCUIV           2B           40
    IODATS_RDEVCUMN           2A      1
    IODATS_RDEVDEV            1A      2
    IODATS_RDEVDVID           16      2
    IODATS_RDEVDVIV           2B           80
    IODATS_RDEVLPM            19      1
    IODATS_RDEVSID            1C      4
    IODATS_RDEVTYPE           14      1
    MRHDR                      0     20
    MRHDR_END                 14      0
    MRHDRDM                    4      1
    MRHDRLEN                   0      2
    MRHDRRC                    6      2
    MRHDRTOD                   8      8
    MRHDRZER                   2      2

    This information is
    based on z/VM V6R1.0.

    Last updated on 8 Oct 2009 at 21:08:13.

    Copyright IBM Corporation, 1990, 2009