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Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRIODSON
PrologControl Block Contents
Cross Reference
MRIODSON Prolog
DSECT NAME - IODSON
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRIODSON
DESCRIPTIVE NAME - Monitor Event Record
Domain 6 - I/O Domain
Record 11- Vary On Subchannel
DESCRIPTION - Indicates that a subchannel has been varied online
MRIODSON Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 44 IODSON Start of monitor record
0 0 Character 0 IODSON_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 IODSON_RDEVTYPE Device type code. Unique for
each device within the class in
IODSON_RDEVCLAS.
21 15 Bitstring 1 IODSON_RDEVCLAS Device class code. Unique for
each class.
22 16 Unsigned 2 IODSON_RDEVDVID Device type. See
IODSON_RDEVDVIV for its source.
24 18 Bitstring 1 IODSON_CALMODLN Device model identifier. See
IODSON_RDEVDVIV flag for its
source.
25 19 Bitstring 1 IODSON_RDEVLPM Logical path mask
26 1A Unsigned 2 IODSON_RDEVDEV Device number
28 1C Unsigned 4 IODSON_RDEVSID Host subchannel id
32 20 Character 8 IODSON_RDEVCHPS Eight channel path ids for
this device
40 28 Unsigned 2 IODSON_RDEVCUID control unit id. Applicable
only when IODSON_RDEVCUIV = on.
42 2A Unsigned 1 IODSON_RDEVCUMN Control unit model
identifier. Applicable only
when IODSON_RDEVCUIV = on.
43 2B Bitstring 1 IODSON_CALFLAGS Flag Byte
1... .... IODSON_RDEVDVIV OFF = device model number (in
IODSON_RDEVDVID) and model
identifier (in IODSON_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.. .... IODSON_RDEVCUIV When on, Control unit
information is supplied in
IODSON_RDEVCUID and
IODSON_RDEVCUMN.
..1. .... *
...1 .... *
.... 1... *
.... .1.. *
.... ..1. *
.... ...1 *
44 2C Character 0 IODSON_END
MRIODSON Cross Reference
Hex Hex
Name Offset Length Value
IODSON 0 44
IODSON_CALFLAGS 2B 1
IODSON_CALMODLN 18 1
IODSON_END 2C 0
IODSON_MRHDR 0 0
IODSON_RDEVCHPS 20 8
IODSON_RDEVCLAS 15 1
IODSON_RDEVCUID 28 2
IODSON_RDEVCUIV 2B 40
IODSON_RDEVCUMN 2A 1
IODSON_RDEVDEV 1A 2
IODSON_RDEVDVID 16 2
IODSON_RDEVDVIV 2B 80
IODSON_RDEVLPM 19 1
IODSON_RDEVSID 1C 4
IODSON_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 V5R1.0.
Last updated on 13 Sep 2004 at 11:25:22.
Copyright IBM Corporation, 1990, 2004