|
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM. |
IRBLK
Control Block Contents
IRBLK DSECT
Cross Reference (Contains links to field and bit definitions)
IRBLK Prolog
NAME : HCPIRBLK
DESCRIPTION: INTERRUPTION RESPONSE BLOCK MAPPING
DSECT : IRBLK
FUNCTION : PROVIDE SYMOLIC REFERENCES FOR THE FIELDS RETURNED
BY AN XA MACHINE IN RESPONSE TO A TSCH INSTRUCTION THAT
SETS CONDITION CODE ZERO.
LOCATED BY : N/A
CREATED BY : N/A
DELETED BY : N/A
IRBLK Control Block Content
IRBLK DSECT
Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure IRBLK INTERRUPTION RESPONSE BLOCK
MAPPING
0000 0 Bitstring 12 IRBSCSW (0) EXTENDED STATUS CSW
0000 0 Signed 4 IRBWORD1 (0) IRB WORD-1
0000 0 Bitstring 1 IRBSKEY KEY, EXTENDED STATUS AND DEFERRED
CC
1111 .... CSWKEY X'F0' KEY OF I/O OPERATION (0-15)
.... 1... CSWSRENA X'08' SUSPEND-RESUME ENABLEMENT
ORB only fields
.... .1.. CSWSMCTL X'04' Streaming Mode Cntrl(ORB
Word 1,Bit 5)
.... ..1. CSWMODCT X'02' Modification Control(ORB
Word 1,Bit 6)
.... ...1 CSWSYNCH X'01' Synchronize Control (ORB
Word 1,Bit 7) IRB only fields
.... .1.. CSWESTAT X'04' 1=EXTENDED STATUS, 0=TIME
.... ..11 CSWDFCC X'03' DEFERRED CC EXTRACT MASK
.... .... CSWCC0 X'00' DEFERRED CC CODE 0
.... ...1 CSWCC1 X'01' DEFERRED CC CODE 1
.... ..1. CSWCC2 X'02' DEFERRED CC CODE 2
.... ..11 CSWCC3 X'03' DEFERRED CC CODE 3
0001 1 Bitstring 1 IRBFPIZN CCW CONTROLS AND INITIAL
RESPONSES
1111 1... CSWSUMRY X'F8' Summary test field. These
bits will appear in .both the ORB
and IRB
1111 1.11 CSWMESUM X'FB' ESAME mode summary test
field. This mask .includes bits
that only appear .in the ORB
1... .... CSWFORMT X'80' FORMAT OF CCW
.1.. .... CSWPREF X'40' UNLIMITED PREFETCH ALLOWED.
..1. .... CSWRESPN X'20' INITIAL STATUS RESPONSE
PRESENTED
...1 .... CSWLMODE X'10' ADDRESS LIMIT IS IN EFFECT
.... 1... CSWSUPSI X'08' SUPPRESS SUSPENDED
INTERRUPTION
.... ..1. CSWF2IDA X'02' ORB "H" bit - Format-2 IDAW
control: when set, Format-2
(64-bit/31-bit data address,
representing 4K of data) IDAWs
are provided for all channel
commands of the designated
channel program which have the
Indirect Data Addressing flag set
to one.
.... ...1 CSW2KIDA X'01' ORB "T" bit - only
meaningful if the Format-2 bit(H)
is set. 64 bit/31 bit data
addresses are used, however data
is moved in 2K blocks per IDAW.
.... .1.. CSWZCC X'04' CONFIRMED ZERO CONDITION
CODE
.... ..1. CSWELOG X'02' EXTENDED I/O LOGOUT STORED
.... ...1 CSWPNOPR X'01' NOT-OPERATION PATH
ENCOUNTERED
0002 2 Bitstring 1 IRBFCTL FUNCTION CONTROL BYTE
1... .... CSWQDIOA X'80' QDIO-Active (V)
.1.. .... CSWSFCN X'40' START SUBCHANNEL FUNCTION
..1. .... CSWHFCN X'20' HALT SUBCHANNEL FUNCTION
...1 .... CSWCFCN X'10' CLEAR SUBCHANNEL FUNCTION
.... 1... CSWRPND X'08' RESUME SUBCHANNEL PENDING
.... .1.. CSWSPND X'04' START SUBCHANNEL PENDING
.... ..1. CSWHPND X'02' HALT SUBCHANNEL PENDING
.... ...1 CSWCPND X'01' CLEAR SUBCHANNEL PENDING
0003 3 Bitstring 1 IRBACTL ACTIVITY CONTROL BYTE
1... .... CSWSCACT X'80' SUBCHANNEL ACTIVE
.1.. .... CSWDVACT X'40' DEVICE ACTIVE
..1. .... CSWSUSPN X'20' SUBCHANNEL SUSPENDED
...1 .... CSWALERT X'10' ALERT STATUS
.... 1... CSWISTAT X'08' INTERMEDIATE STATUS
.... .1.. CSWPSTAT X'04' PRIMARY STATUS
.... ..1. CSWNSTAT X'02' SECONDARY STATUS
.... ...1 CSWSTPND X'01' STATUS PENDING
0004 4 Signed 4 IRBCCWA ADDRESS OF CCW AT INTERRUPT (+8)
0008 8 Bitstring 4 IRBCSC (0) COMBINED DEVICE STATUS,
SUBCHANNEL STATUS, AND RESIDUAL
COUNT FIELDS
0008 8 Bitstring 1 IRBDVST DEVICE STATUS FLAGS
1... .... CSWATTN X'80' ATTENTION
.1.. .... CSWSM X'40' STATUS MODIFIER
..1. .... CSWCUE X'20' CONTROL UNIT END
...1 .... CSWBUSY X'10' BUSY
.... 1... CSWCE X'08' CHANNEL END
.... .1.. CSWDE X'04' DEVICE END
.... ..1. CSWUC X'02' UNIT CHECK
.... ...1 CSWUE X'01' UNIT EXCEPTION
.... 11.. CSWCEDE X'0C' CHANNEL END AND DEVICE END
..1. 11.. CSWCEDC X'2C' CHANNEL END,DEVICE END,AND
CUE
.1.1 .... CSWSMBSY X'50' CONTROL UNIT BUSY
.111 .... CSWCBS X'70' CONTROL UNIT BUSY AND END
1... .1.. CSWDEA X'84' DEVICE END AND ATTENTION
0009 9 Bitstring 1 IRBSCST SUBCHANNEL STATUS FLAGS
1... .... CSWPCI X'80' PROGRAM CONTROLLED
INTERRUPTION
.1.. .... CSWIL X'40' INCORRECT LENGTH INDICATION
..1. .... CSWPRG X'20' CHANNEL PROGRAM CHECK
...1 .... CSWPROT X'10' STORAGE PROTECTION CHECK
.... 1... CSWCDC X'08' CHANNEL DATA CHECK
.... .1.. CSWCCC X'04' CHANNEL CONTROL CHECK
.... ..1. CSWIFCC X'02' INTERFACE CONTROL CHECK
.... ...1 CSWCHC X'01' CHANNEL CHAINING CHECK
.... 111. CSWHCE X'0E' CDC+CCC+IFCC HARDWARE
ERRORS
..11 ...1 CSWPCE X'31' PRG+CHC+PROT PROGRAM ERRORS
000A 10 Signed 2 IRBCNT UNEXPIRED COUNT IN CCW
000C 12 Signed 4 IRBXSTAT (0) EXTENDED STATUS/TIME WORD
000C 12 Bitstring 1 IRBECF CHANNEL PROGRAM ERROR CHECK FLAGS
.1.. .... CSWKEYCK X'40' INVALID CBC ON STORAGE KEY
..1. .... CSWMBPCK X'20' ADDRESSING EXCEPTION ON MBI
...1 .... CSWMBDCK X'10' INVALID CBC ON MEASURE
BLOCK
.... 1... CSWMBACK X'08' ACCESS EXCEPTION OF MEASURE
BLK
.... .1.. CSWCCWCK X'04' INVALID CBC ON CCW FIELDS
.... ..1. CSWIDACK X'02' INVALID CBC ON IDAL FIELDS
.... ...1 CSWSALCK X'01' INVALID ADDRESS LIMIT SET
000D 13 Bitstring 1 IRBLPUM LAST-PATH-USED MASK
.... 11.1 IRBCPID IRBLPUM *** TEMPORARY UNTIL CODE
CHANGE ***
000E 14 Signed 2 IRBDCTI (0) DEVICE CONNECT TIME INTERVAL
000E 14 Bitstring 1 IRBFVF TERMINATION CODE VALIDATION BITS
1... .... CSWFVFAR X'80' Ancillary report bit in the
ESW
.1.. .... CSWFVFLP X'40' LAST-PATH-USED IS VALID
..1. .... CSWFVFTC X'20' TERMINATION CODE IS VALID
...1 .... CSWFVFSC X'10' SEQUENCE CODE IS VALID
.... 1... CSWFVFDS X'08' DEVICE STATUS IS VALID
.... .1.. CSWFVFCA X'04' CCW ADDRESS IS VALID
.... ..11 CSWSACOD X'03' STORAGE ACCESS CODE:
.... .... CSWSAUNK X'00' 00 - UNKNOWN TYPE
.... ...1 CSWSARD X'01' 01 - READ
.... ..1. CSWSAWRT X'02' 02 - WRITE
.... ..11 CSWSARDB X'03' 03 - READ BACKWARDS
.... ..1. CSWFVFCN X'02' S/370-ONLY: CHANNEL # VALID
.... ...1 CSWFVFDN X'01' S/370-ONLY: DEVICE # VALID
...1 11.. CSWFVFCM CSWFVFSC+CSWFVFDS+CSWFVFCA common
fields
000F 15 Bitstring 1 IRBTMSEQ TERMINATION,ALERT AND SEQUENCE
CODES
11.. .... CSWTMCOD X'C0' TERMINATION CODE :
.... .... CSWTMCID X'00' 00 - INTERFACE DISCONNECT
.1.. .... CSWTMCST X'40' 01 - STOP, STACK, NORMAL
TERM
1... .... CSWTMCSR X'80' 10 - SELECTIVE RESET
11.. .... CSWTMXXX X'C0' 11 - RESERVED
..1. .... CSWLCLAR X'20' Ancillary report bit in the
limited channel logout area
...1 .... CSWSECER X'10' SECONDARY ERROR
.... 1... CSWEALRT X'08' LOGOUT IS FROM I/O ERROR
ALERT
.... .111 CSWSQCOD X'07' SEQUENCE CODE :
.... .... CSWSQXXX X'00' 000 - RESERVED
.... ...1 CSWSQCOA X'01' 001 - COMMAND-OUT &
ADDRESS-IN
.... ..1. CSWSQCAC X'02' 010 - COMMAND ACCEPTED
.... ..11 CSWSQDTR X'03' 011 - DATA TRANSFERRED
.... .1.. CSWSQCNA X'04' 100 - COMMAND NOT ACCEPTED
.... .1.1 CSWSQCAQ X'05' 101 - COMMAND ACCEPTED BUT
DATA TRANSFER UNKNOWN
.... .11. CSWSQYYY X'06' 110 - RESERVED
.... .111 CSWSQZZZ X'07' 111 - RESERVED
0010 16 Signed 4 IRBERW (0) Extended Report Word for Format 0
ESW
0010 16 Bitstring 1 IRBERWB0 ERW Byte 0
.... 1... CSWPVRQ X'08' Path verification required
.... ...1 CSWERWCS X'01' Sense data stored in
extended control word
0011 17 Bitstring 1 IRBERWB1 ERW Byte 1
1... .... CSW2CCWV X'80' Secondary CCW address
validity bit
.1.. .... CSWFSAFM X'40' Failing storage address
Format =1 Indicates format-2 addr
=0 Indicates format-1 addr
..11 1111 CSWCSCNT X'3F' Concurrent Sense Count
extract mask
0012 18 Bitstring 1 * (2) Reserved for future hardware use
0014 20 Signed 4 * RESERVED FOR FUTURE HARDWARE USE
0018 24 Signed 4 * RESERVED FOR FUTURE HARDWARE USE
001C 28 Signed 4 IRB2DCCW Secondary CCW address
00000020 IRBLEN (*-IRBLK) LENGTH OF THE IRB
WITHOUT XLOGOUT
0020 32 Bitstring 32 IRBXTLOG EXTENDED LOGOUT INFORMATION
00000040 IRBLENG (*-IRBLK) LENGTH OF ARCHITECTED
IRB IN BYTES
00000008 IRBSIZE (IRBLENG+7)/8 SIZE IN BYTES FOR
CP ALLOCATION
0000 0 Bitstring 1 IRBDKEY CHSC Subchannel CRQBK Storage Key
0001 1 Bitstring 1 *
0002 2 Bitstring 2 IRBDFASC (0) FCTL (BIT 17-19) ACTL (BIT 20-26)
0002 2 Bitstring 1 IRBDFCTL
0003 3 Bitstring 1 IRBDACTL
0004 4 Bitstring 4 IRBDCRQ Address of Communication Request
BLK
0008 8 Bitstring 1 *
0009 9 Bitstring 1 IRBDSC CHSC Status Control
000A 10 Bitstring 2 *
IRBLK Storage Layout
*** IRBLK - INTERRUPTION RESPONSE BLOCK MAPPING
*
* +------+------+------+------+---------------------------+
* 0 |:SKEY |:FPIZN|:FCTL |:ACTL | IRBCCWA |
* +------+------+------+------+------+------+------+------+
* 8 |:DVST |:SCST | IRBCNT |IRBECF|:LPUM |IRBFVF|:TMSEQ|
* +------+------+-------------+------+------+------+------+
* 10 |:ERWB0|:ERWB1|/////////////|///////////////////////////|
* +------+------+-------------+---------------------------+
* 18 |///////////////////////////| IRB2DCCW |
* +---------------------------+---------------------------+
* 20 | |
* = IRBXTLOG =
* | |
* +-------------------------------------------------------+
* 40
*
*** IRBLK - INTERRUPTION RESPONSE BLOCK MAPPING
*** Overlay for IRBSCSW in IRBLK
*
* +------+------+------+------+---------------------------+
* 0 |:DKEY |//////|:DFCTL|:DACTL| IRBDCRQ |
* +------+------+------+------+---------------------------+
* 8 |//////|IRBDSC|/////////////| C
* +------+------+-------------+
*
*** Overlay for IRBSCSW in IRBLK
IRBLK Cross Reference
Symbol Dspl Value -------------- ---- ----- CSWALERT 0003 10 CSWATTN 0008 80 CSWBUSY 0008 10 CSWCBS 0008 70 CSWCCC 0009 04 CSWCCWCK 000C 04 CSWCC0 0000 00 CSWCC1 0000 01 CSWCC2 0000 02 CSWCC3 0000 03 CSWCDC 0009 08 CSWCE 0008 08 CSWCEDC 0008 2C CSWCEDE 0008 0C CSWCFCN 0002 10 CSWCHC 0009 01 CSWCPND 0002 01 CSWCSCNT 0011 3F CSWCUE 0008 20 CSWDE 0008 04 CSWDEA 0008 84 CSWDFCC 0000 03 CSWDVACT 0003 40 CSWEALRT 000F 08 CSWELOG 0001 02 CSWERWCS 0010 01 CSWESTAT 0000 04 CSWFORMT 0001 80 CSWFSAFM 0011 40 CSWFVFAR 000E 80 CSWFVFCA 000E 04 CSWFVFCM 000E 1C CSWFVFCN 000E 02 CSWFVFDN 000E 01 CSWFVFDS 000E 08 CSWFVFLP 000E 40 CSWFVFSC 000E 10 CSWFVFTC 000E 20 CSWF2IDA 0001 02 CSWHCE 0009 0E CSWHFCN 0002 20 CSWHPND 0002 02 CSWIDACK 000C 02 CSWIFCC 0009 02 CSWIL 0009 40 CSWISTAT 0003 08 CSWKEY 0000 F0 CSWKEYCK 000C 40 CSWLCLAR 000F 20 CSWLMODE 0001 10 CSWMBACK 000C 08 CSWMBDCK 000C 10 CSWMBPCK 000C 20 CSWMESUM 0001 FB CSWMODCT 0000 02 CSWNSTAT 0003 02 CSWPCE 0009 31 CSWPCI 0009 80 CSWPNOPR 0001 01 CSWPREF 0001 40 CSWPRG 0009 20 CSWPROT 0009 10 CSWPSTAT 0003 04 CSWPVRQ 0010 08 CSWQDIOA 0002 80 CSWRESPN 0001 20 CSWRPND 0002 08 CSWSACOD 000E 03 CSWSALCK 000C 01 CSWSARD 000E 01 CSWSARDB 000E 03 CSWSAUNK 000E 00 CSWSAWRT 000E 02 CSWSCACT 0003 80 CSWSECER 000F 10 CSWSFCN 0002 40 CSWSM 0008 40 CSWSMBSY 0008 50 CSWSMCTL 0000 04 CSWSPND 0002 04 CSWSQCAC 000F 02 CSWSQCAQ 000F 05 CSWSQCNA 000F 04 CSWSQCOA 000F 01 CSWSQCOD 000F 07 CSWSQDTR 000F 03 CSWSQXXX 000F 00 CSWSQYYY 000F 06 CSWSQZZZ 000F 07 CSWSRENA 0000 08 CSWSTPND 0003 01 CSWSUMRY 0001 F8 CSWSUPSI 0001 08 CSWSUSPN 0003 20 CSWSYNCH 0000 01 CSWTMCID 000F 00 CSWTMCOD 000F C0 CSWTMCSR 000F 80 CSWTMCST 000F 40 CSWTMXXX 000F C0 CSWUC 0008 02 CSWUE 0008 01 CSWZCC 0001 04 CSW2CCWV 0011 80 CSW2KIDA 0001 01 IRBACTL 0003 IRBCCWA 0004 IRBCNT 000A IRBCPID 000D 0D IRBCSC 0008 IRBDACTL 0003 IRBDCRQ 0004 IRBDCTI 000E IRBDFASC 0002 IRBDFCTL 0002 IRBDKEY 0000 IRBDSC 0009 IRBDVST 0008 IRBECF 000C IRBERW 0010 IRBERWB0 0010 IRBERWB1 0011 IRBFCTL 0002 IRBFPIZN 0001 IRBFVF 000E IRBLEN 001C 00000020 IRBLENG 0020 00000040 IRBLPUM 000D IRBSCST 0009 IRBSCSW 0000 IRBSIZE 0020 00000008 IRBSKEY 0000 IRBTMSEQ 000F IRBWORD1 0000 IRBXSTAT 000C IRBXTLOG 0020 IRB2DCCW 001C
Last updated on 5 Jun 2001 at 13:59:59 EDT.
Copyright IBM Corporation, 1990, 2001