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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. |
MRIODATS
PrologControl Block Contents
Storage Layout
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 V4R3.0.
Last updated on 1 May 2002 at 16:20:33.
Copyright IBM Corporation, 1990, 2002