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Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only. |
CRWBK
Cross Reference (Contains links to field and bit definitions)
CRWBK Prolog
NAME : HCPCRWBK
DESCRIPTION: CHANNEL REPORT WORD BLOCK
DSECT : CRWBK
FUNCTION : THE CRWBK IS A QUEUE ELEMENT ON THE QUEUE OF PENDING
CHANNEL REPORT WORDS AWAITING PRESENTATION (VIA A
MACHINE CHECK INTERRUPTION) TO THE VIRTUAL MACHINE.
LOCATED BY : CHCIORW - ANCHOR OF QUEUE IN CHCBK
MCVCRWS - ANCHOR OF QUEUE IN MCVBK
CRWNEXT - FORWARD POINTER IN PRECEEDING QUEUE ELEMENT
CREATED BY : HCPVDB - WHEN A DEVICE IS DEFINED FOR A VIRTUAL ESA
MACHINE
HCPVOF - DURING SIMULATION OF A RCHP INSTRUCTION
HCPRFC - TO PASS ON A CRW FOR A DEDICATED DEVICE TO
CONCERNED VIRTUAL MACHINE
DELETED BY : HCPMCV - WHEN A VIRTUAL MACHINE IS RESET
- WHEN THE CRW IS STORED IN THE VIRTUAL MACHINE
DURING SIMULATION OF A MACHINE CHECK INTERRUPT
HCPVOF - DURING SIMULATION OF A STCRW INSTRUCTION
CRWBK Control Block Content
CRWBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure CRWBK CHANNEL REPORT WORD BLOCK 0000 0 Signed 4 CRWWORD (0) CRW REPORT WORD CONTENTS 0000 0 Bitstring 1 CRWFLAGS CHANNEL REPORT FLAGS AND CODES .1.. .... CRWSOLIC X'40' SOLICITED - FOR EXAMPLE, CHANNEL PATH INITIALIZED IN RESPONSE TO RCHP AS OPPOSED TO CHANNEL PATH INITIALIZED DUE TO LOSS-OF-POWER. ..1. .... CRWOVER X'20' OVERFLOW - ONE OR MORE SUBSEQUENT CHANNEL REPORT WORDS HAVE BEEN LOST. ...1 .... CRWCHAIN X'10' SUBSEQUENT CHANNEL REPORT WORD(S) REQUIRED TO DESCRIBE ONE EVENT. IF A CHAINED CHANNEL REPORT WORD IS LOST FROM OVERFLOW, ALL OF THE CHANNEL REPORT WORDS CHAINED TO THAT CHANNEL REPORT WORD ARE LOST AS WELL. .... 1111 CRWRSC X'0F' REPORTING SOURCE CODE (RSC) MASK .... ..1. CRWMONIT X'02' SOURCE = CHANNEL MONITORING FACILITY .... ..11 CRWSUBCH X'03' SOURCE = SUBCHANNEL. THE SUBCHANNEL NUMBER IS SPECIFIED IN THE REPORTING SOURCE ID. .... .1.. CRWCHPID X'04' SOURCE = CHANNEL PATH. THE CHANNEL PATH IDENTIFIER IS SPECIFIED IN THE REPORTING SOURCE ID. .... 1..1 CRWCAF X'09' SOURCE = CONFIGURATION ALERT TEMPORARY ERROR. THE FAILING CHANNEL PATH IS SPECIFIED IN THE IN THE REPORTING SOURCE ID. .... 1.11 CRWCSS X'0B' SOURCE = CHANNEL SUBSYSTEM. 0001 1 Bitstring 1 CRWEFLD CRW Error Recovery Information 00000000 CRWCHPIP X'00' Channel Path Information Pending 00000080 CRWAR X'80' Ancillary Report Indicator ..11 1111 CRWERCMK X'3F' Mask for location of ERC Field .... ...1 CRWAVAIL X'01' 000001 - ERC = Available .... ..1. CRWINIT X'02' 000010 - ERC = Initialized, Parameters not Changed .... ..11 CRWTEMP X'03' 000011 - ERC = Temporary Error .... .1.. CRWALERT X'04' 000100 - ERC = installed, Parameters Initialized. The device valid BIT AND ANY OTHER FIELD within the subchannel may be changed. .... .1.1 CRWTERM X'05' 000101 - ERC = Terminal .... .11. CRWPERM X'06' 000110 - ERC = Permanent Error not Initialized .... .111 CRWPERMI X'07' 000111 - ERC = Permanent, Initialized .... 1... CRWIPM X'08' 001000 - ERC = Installed Parameters Modified. The PIM and/or PAM and/or CHPIDS may be changed. 0002 2 Signed 2 CRWRSID RESOURCE IDENTIFIER CODE 0004 4 Signed 4 CRWNEXT NEXT CRW IF ANY 0008 8 Signed 4 CRWRDEV ASSOCIATED RDEVBLOK IF ANY 000C 12 Signed 4 * RESERVED FOR FUTURE IBM USE 00000002 CRWSIZE (*-CRWBK+7)/8 CRWBK SIZE IN DOUBLE WORDS
CRWBK Storage Layout
*** CRWBK - CHANNEL REPORT WORD BLOCK * * +------+------+-------------+---------------------------+ * 0 |:FLAGS|:EFLD | CRWRSID | CRWNEXT | * +------+------+-------------+---------------------------+ * 8 | CRWRDEV |///////////////////////////| * +---------------------------+---------------------------+ * 10 * *** CRWBK - CHANNEL REPORT WORD BLOCK
CRWBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----CRWALERT 0001 04
CRWAR 0001 00000080
CRWAVAIL 0001 01
CRWCAF 0000 09
CRWCHAIN 0000 10
CRWCHPID 0000 04
CRWCHPIP 0001 00000000
CRWCSS 0000 0B
CRWEFLD 0001
CRWERCMK 0001 3F
CRWFLAGS 0000
CRWINIT 0001 02
CRWIPM 0001 08
CRWMONIT 0000 02
CRWNEXT 0004
CRWOVER 0000 20
CRWPERM 0001 06
CRWPERMI 0001 07
CRWRDEV 0008
CRWRSC 0000 0F
CRWRSID 0002
CRWSIZE 000C 00000002
CRWSOLIC 0000 40
CRWSUBCH 0000 03
CRWTEMP 0001 03
CRWTERM 0001 05
CRWWORD 0000
Last updated on 3 Aug 1999 at 11:48:33 EDT.
Copyright IBM Corporation, 1990, 1999