MRIODHPF

MRIODHPF Prolog

 DSECT NAME - IODHPF
 FUNCTION - This record indicates a High Performance FICON (HPF)
            feature change.
 LOCATED BY -
           Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRIODHPF
 DESCRIPTIVE NAME - Monitor Event Record
                    Domain 6 - I/O Domain
                    Record 32 - HPF Feature Change
 DESCRIPTION - Indicates an HPF Feature Change
 NOTES:
     The SSID (Subsystem ID) is a unique value that distinguishes
     a logical control unit from any other in a configuration.
     This value can be obtained from a Q DASD DETAILS command
     executed against one of the device's on the control unit.
     An LSS (Logical Subsystem) is a logical control unit
     within a physical control unit.  The LSS number is only
     unique within the physical control unit and not unit
     across control units.  Currently there is no query command
     that presents this inforamtion.

MRIODHPF Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure    28  IODHPF                 Start of monitor record
   0   0  Character     0  IODHPF_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  Unsigned      2  IODHPF_CUIDSSID        Subsystem ID (SSID)
  22  16  Unsigned      1  IODHPF_CUIFCXP_OLD     Old HPF Feature Bits
  23  17  Unsigned      1  IODHPF_CUIFCXP_NEW     New HPF Feature Bits
  24  18  Character     4  *                      Reserved and available for
                                                  IBM use.
  28  1C  Character     0  IODHPF_END             

MRIODHPF Cross Reference

                      Hex           Hex
Name                 Offset Length Value
 
IODHPF                     0     28
IODHPF_CUIDSSID           14      2
IODHPF_CUIFCXP_NEW        17      1
IODHPF_CUIFCXP_OLD        16      1
IODHPF_END                1C      0
IODHPF_MRHDR               0      0
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 V6R3.0.

Last updated on 22 Jul 2013 at 15:07:38.

Copyright IBM Corporation, 1990, 2013