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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. |
MRIODQDA
PrologControl Block Contents
Cross Reference
MRIODQDA Prolog
DSECT NAME - IODQDA
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRIODQDA
DESCRIPTIVE NAME - Monitor Event Record
Domain 6 - I/O Domain
Record 25 - QDIO Device Activation
DESCRIPTION - Indicates that a QDIO device has been activated.
NOTES -
1. This record is emitted for only real QDIO devices for which
z/VM CP is maintaining shadow queues. (If CP is not shadowing
the queues, it doesn't see the I/O and therefore can't emit
this record.) Typically Linux guests would use shadow queues
but z/VM TCP/IP would not. z/VM TCP/IP drives its real QDIO
devices using Diag X'98' and does not use shadow queues.
MRIODQDA Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 41 IODQDA Start of monitor record
0 0 Character 0 IODQDA_MRHDR Record header. See MRRECHDR.
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 IODQDA_RDEVDEV Real device number (data dev)
22 16 Character 8 IODQDA_VMDUSER Owning user ID.
30 1E Unsigned 2 IODQDA_VDEVDEV Owner virtual device number.
32 20 Unsigned 2 IODQDA_QDIOFMT QDIO format type 0=QDIO 1=FCP
2=HIPERSOCKETS
34 22 Unsigned 2 IODQDA_QDINPCT Number of input queues.
36 24 Unsigned 2 IODQDA_QDIOUTCT Number of output queues.
38 26 Bitstring 4 IODQDA_STATUS status bits
1... .... IODQDA_QDIOQMCU QDIO multi ctlunit support
.1.. .... IODQDA_QDIOEBSM QEBSM Managed QDIO Connection
..1. .... *
...1 .... *
.... 1... *
.... .1.. *
.... ..1. *
.... ...1 *
38 26 Bitstring 1 * reserved for future IBM
39 27 Bitstring 1 * reserved for future IBM
40 28 Bitstring 1 * reserved for future IBM
42 2A Character *
44 2C Character 0 IODQDA_END
MRIODQDA Cross Reference
Hex Hex
Name Offset Length Value
IODQDA 0 41
IODQDA_END 2C 0
IODQDA_MRHDR 0 0
IODQDA_QDINPCT 22 2
IODQDA_QDIOEBSM 26 40
IODQDA_QDIOFMT 20 2
IODQDA_QDIOQMCU 26 80
IODQDA_QDIOUTCT 24 2
IODQDA_RDEVDEV 14 2
IODQDA_STATUS 26 4
IODQDA_VDEVDEV 1E 2
IODQDA_VMDUSER 16 8
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 V5R3.0.
Last updated on 12 Jun 2007 at 12:35:23.
Copyright IBM Corporation, 1990, 2007