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
   2   2  Unsigned      2  MRHDRZER
   4   4  Unsigned      1  MRHDRDM
   5   5  Unsigned      1  *
   6   6  Unsigned      2  MRHDRRC
   8   8  Character     8  MRHDRTOD
  16  10  Character     4  *
  20  14  Character     0  MRHDR_END
  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
  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 V7R1.0.

Last updated on 11 Sept 2018 at 15:52:40.
Copyright IBM Corporation, 1990, 2018