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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. |
MRIODVON
PrologControl Block Contents
Storage Layout
Cross Reference
MRIODVON Prolog
DSECT NAME - IODVON
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRIODVON
DESCRIPTIVE NAME - Monitor Event Record
Domain 6 - I/O Domain
Record 1 - Vary On Device
DESCRIPTION - Indicates that a real device has been varied online
MRIODVON Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 60 IODVON Start of monitor record
0 0 Character 0 IODVON_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 IODVON_RDEVTYPE Device type code. Unique for
each device within the class in
IODVON_RDEVCLAS.
21 15 Bitstring 1 IODVON_RDEVCLAS Device class code. Unique for
each class.
22 16 Unsigned 2 IODVON_RDEVDVID Device type number in packed
decimal. See IODVON_RDEVDVIV for
its source.
24 18 Bitstring 1 IODVON_CALMODLN Device model identifier. See
IODVON_RDEVDVIV flag for its
source.
25 19 Bitstring 1 IODVON_RDEVLPM Logical path mask
26 1A Unsigned 2 IODVON_RDEVDEV Device number in packed decimal
28 1C Unsigned 4 IODVON_RDEVSID Host subchannel id
32 20 Character 8 IODVON_RDEVCHPS Eight channel path ids for this
device
40 28 Unsigned 2 IODVON_RDEVCUID control unit id in packed
decimal. Applicable only when
IODVON_RDEVCUIV = on.
42 2A Unsigned 1 IODVON_RDEVCUMN Control unit model identifier.
Applicable only when
IODVON_RDEVCUIV = on.
43 2B Bitstring 1 IODVON_CALFLAGS Flag Byte
1... .... IODVON_RDEVDVIV OFF = device model number (in
IODVON_RDEVDVID) and model
identifier (in IODVON_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.. .... IODVON_RDEVCUIV When on, Control unit
information is supplied in
IODVON_RDEVCUID and
IODVON_RDEVCUMN.
..1. .... *
...1 .... *
.... 1... *
.... .1.. *
.... ..1. *
.... ...1 *
44 2C Character 1 IODVON_RDCRCUC Real CU Code
45 2D Character 1 IODVON_RDCOBRCO OBR Code
46 2E Character 6 IODVON_RDEVSER DASD volume serial identifier
52 34 Unsigned 4 IODVON_CALRDEVSID Host subchannel id of the base
PAV when RDEVPVAL is on, zero
otherwise
56 38 Unsigned 2 IODVON_CALRDEVDEV Device number of the base PAV
when RDEVPVAL is on, zero
otherwise
58 3A Bitstring 1 IODVON_RDEVPVFG PAV flag to indicate base and
alias DASD
1... .... IODVON_RDEVPVBA PAV base indicator
.1.. .... IODVON_RDEVPVAL PAV alias indicator
..1. .... *
...1 .... *
.... 1... *
.... .1.. *
.... ..1. *
.... ...1 *
59 3B Bitstring 1 * Reserved and available for IBM
use
60 3C Character 0 IODVON_END
MRIODVON Cross Reference
Hex Hex
Name Offset Length Value
IODVON 0 60
IODVON_CALFLAGS 2B 1
IODVON_CALMODLN 18 1
IODVON_CALRDEVDEV 38 2
IODVON_CALRDEVSID 34 4
IODVON_END 3C 0
IODVON_MRHDR 0 0
IODVON_RDCOBRCO 2D 1
IODVON_RDCRCUC 2C 1
IODVON_RDEVCHPS 20 8
IODVON_RDEVCLAS 15 1
IODVON_RDEVCUID 28 2
IODVON_RDEVCUIV 2B 40
IODVON_RDEVCUMN 2A 1
IODVON_RDEVDEV 1A 2
IODVON_RDEVDVID 16 2
IODVON_RDEVDVIV 2B 80
IODVON_RDEVLPM 19 1
IODVON_RDEVPVAL 3A 40
IODVON_RDEVPVBA 3A 80
IODVON_RDEVPVFG 3A 1
IODVON_RDEVSER 2E 6
IODVON_RDEVSID 1C 4
IODVON_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 V4R2.0.
Last updated on 15 Oct 2001 at 08:04:23.
Copyright IBM Corporation, 1990, 2001