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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. |
MRIODQDD
PrologControl Block Contents
Cross Reference
MRIODQDD Prolog
DSECT NAME - IODQDD
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRIODQDD
DESCRIPTIVE NAME - Monitor Event Record
Domain 6 - I/O Domain
Record 27 - QDIO Device Deactivation
DESCRIPTION - Indicates deactivation of a QDIO device.
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.
MRIODQDD Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 348 IODQDD Start of monitor record
0 0 Character 0 IODQDD_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 IODQDD_RDEVDEV Real device number (data dev)
22 16 Unsigned *
24 18 Unsigned 4 IODQDD_QDIOCSGR Count of SIGA-r instructions
issued by guest.
28 1C Unsigned 4 IODQDD_QDIOCSGW Count of SIGA-w instructions
issued by guest.
32 20 Unsigned 4 IODQDD_QDIOCSGS Count of SIGA-s instructions
issued by guest.
36 24 Unsigned 4 IODQDD_RDEVVSSR Count of SIGA-r instructions
issued by CP.
40 28 Unsigned 4 IODQDD_RDEVVSSW Count of SIGA-w instructions
issued by CP.
44 2C Unsigned 4 IODQDD_RDEVVSSS Count of SIGA-w instructions
issued by CP.
48 30 Character 8 IODQDD_BFTOA QDIO buffers sent to adapter
(unsigned-64)
56 38 Character 8 IODQDD_BYTOA Bytes sent to adapter
(unsigned-64)
64 40 Character 8 IODQDD_BFFRA QDIO buffers taken from
adapter (unsigned-64)
72 48 Character 8 IODQDD_BYFRA Bytes taken from adapter
(unsigned-64)
80 50 Unsigned 4 IODQDD_RDEVVSIN Count of all PCI interrupts
for this device
84 54 Unsigned 4 IODQDD_RDEVVSIR Count of PCI interrupts that
require a response and cause an
input operation
88 58 Unsigned 4 IODQDD_RDEVVSID Count of PCI interrupts that
are discarded because they do
not require a response.
92 5C Character 256 IODQDD_RESVD Reserved.
348 15C Character 0 IODQDD_END
MRIODQDD Cross Reference
Hex Hex
Name Offset Length Value
IODQDD 0 348
IODQDD_BFFRA 40 8
IODQDD_BFTOA 30 8
IODQDD_BYFRA 48 8
IODQDD_BYTOA 38 8
IODQDD_END 15C 0
IODQDD_MRHDR 0 0
IODQDD_QDIOCSGR 18 4
IODQDD_QDIOCSGS 20 4
IODQDD_QDIOCSGW 1C 4
IODQDD_RDEVDEV 14 2
IODQDD_RDEVVSID 58 4
IODQDD_RDEVVSIN 50 4
IODQDD_RDEVVSIR 54 4
IODQDD_RDEVVSSR 24 4
IODQDD_RDEVVSSS 2C 4
IODQDD_RDEVVSSW 28 4
IODQDD_RESVD 5C 256
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 03 Jun 2005 at 13:45:22.
Copyright IBM Corporation, 1990, 2004