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Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
SZQBK
Control Block Contents
SZQBK DSECT
SZQSTATS DSECT
SZQSTATE DSECT
SZQDEVIN DSECT
SZQPTHIN DSECT
Cross Reference (Contains links to field and bit definitions)
SZQBK Prolog
NAME : HCPSZQBK
DESCRIPTION: IOSC_queryDevice Information Block
DSECT : SZQBK
FUNCTION : The data returned by IOSC_queryDevice is placed in
HCPSZQBK so CP can access the data.
LOCATED BY :
CREATED BY : HCPMNO when device statistics are gathered.
HCPSZP when path state is queried.
DELETED BY : HCPMNO when device statistics are gathered.
HCPSZP when path state is queried.
NOTES :
SZQBK Control Block Content
SZQBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SZQBK IOSC_queryDevice Information Block 0000 0 Signed 2 SZQQUERY Query type .... ...1 SZQDDEVS 1 SZQDDEVS Query device state .... ..1. SZQDDEVP 2 SZQDDEVP Qry device and path state .... ..11 SZQDDSKS 3 SZQDDSKS Qry device statistics .... .1.. SZQDDKPT 4 SZQDDKPT Qry device and path statistics .... .111 SZQDINFO 7 SZQDINFO Get additional device info Disk statistics 0002 2 Bitstring 1 SZQDSTAT Disk status 0003 3 Bitstring 1 * Reserved for future IBM use 0004 4 Signed 4 SZQDTIME Amount of time disk is active 0008 8 Signed 4 SZQDRATE Kbytes/sec transfer rate 000C 12 Signed 4 SZQDBLKS Number of bytes in a block (blocksize) 0010 16 Signed 4 SZQDXFER Number of transfers to/from disk 0014 20 Signed 4 SZQDBLKR Number of blocks read from disk 0018 24 Signed 4 SZQDBLKW Number of blocks written to disk 001C 28 Signed 4 SZQDSEEK Number of seek operations for disk 0020 32 Signed 4 SZQDQDPT Queue depth 0024 36 Bitstring 80 * Space for new query info Path statistics 0074 116 Bitstring 32 SZQPSTTI (8) Up to 8 path statistics 00000174 SZQSIZEB (*-SZQBK) Length of SZQBK in bytes 0000002F SZQSIZE (*-SZQBK+7)/8 Length of SZQBK in double words 0002 2 Bitstring 1 SZQDEVST Device State 00000001 SZQDNLD 1 SZQDNLD Device not loaded 00000002 SZQDLD 2 SZQDLD Device loaded 00000003 SZQDACT 3 SZQDACT Device active 00000004 SZQDSTP 4 SZQDSTP Device stopped 00000005 SZQDERR 5 SZQDERR Device in error 0003 3 Bitstring 1 SZQPTHCT 0004 4 Bitstring 16 SZQPATHS Path state information This dsect maps SZQPSTTI
SZQSTATS DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SZQSTATS IOSC_queryDevice Information Block 0000 0 Signed 2 SZQPIDNM Pathid number 0002 2 Bitstring 1 SZQPSTAT Path status - see SZQDSTAT for bit definitions 0003 3 Bitstring 1 * Reserved for future IBM use 0004 4 Signed 4 SZQPTIME Amount of time path is active 0008 8 Signed 4 SZQPRATE Kbytes/sec transfer rate 000C 12 Signed 4 SZQPXFER Number of transfers to/from disk 0010 16 Signed 4 SZQPBLKR Number of blocks read from disk 0014 20 Signed 4 SZQPBLKW Number of blocks written to disk 0018 24 Signed 4 SZQPSEEK Number of seek operations for disk 001C 28 Signed 4 SZQPQDPT Queue depth 00000020 SZQSTSSZ *-SZQSTATS Size of path statistics info in bytes This dsect map SZQPATHS
SZQSTATE DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SZQSTATE IOSC_queryDevice Information Block 0000 0 Bitstring 1 SZQPTHID Path id 0001 1 Bitstring 1 SZQPTHST Path state 00000001 SZQDPACT 1 SZQDPACT Path is Active 00000002 SZQDPSTP 2 SZQDPSTP Path is stopped 00000003 SZQDPIER 3 SZQDPIER Path could not be initially established 00000004 SZQDPERR 4 SZQDPERR Path established, but since broken 00000002 SZQSTASZ *-SZQSTATE Size of path state information in bytes This dsect is for IOSC_QT_DEVICE_INFO returned device data. (query device information IOSC_QOK_DISK_INFO) This dsect overlays the SZQBK from the top up to but not including SZQPSTTI. This dsect may need to change when deviceInfo_iocs H struct is updated. Make sure there is enough space in the SZQBK for these overlay fields
SZQDEVIN DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SZQDEVIN IOSC_queryDevice Information Block 0000 0 Signed 2 SZQQTYPE Query type; use SZQQUERY equates 0002 2 Bitstring 1 SZQLUNST LUN state; Use SZQDSTAT equates 0003 3 Bitstring 1 SZQDEVTY Peripheral device type from SCSI standard inquiry 0004 4 Bitstring 1 SZQVNDR1 Vendor-specific storage byte 0005 5 Bitstring 1 SZQDPTHS Total paths for this device 0006 6 Bitstring 8 SZQVENID EBCDIC vendor ID for device 000E 14 Bitstring 16 SZQPROID EBCDIC product ID for device 001E 30 Bitstring 4 SZQPRORL EBCDIC product revision level 0022 34 Bitstring 2 * Reserved for future IBM use 0024 36 Signed 4 SZQBLKSZ Blocksize of device 0028 40 Dbl-Word 8 SZQNUMBK Number of blocks for this device 0030 48 Dbl-Word 8 SZQBLKSL Num of blocks at load time 0038 56 Signed 4 SZQFLAGS (0) Device specific cache flags 0038 56 Bitstring 1 SZQFLAG1 Device specific cache flags .... .1.. SZQFCWOB X'04' SZQFCWOB FAStT-cache without batteries .... ..1. SZQFFWT X'02' SZQFFWT FAStT-force write thru on two minute warning from ups .... ...1 SZQFCME X'01' SZQFCME FAStT-cache mirror enable 0039 57 Bitstring 1 SZQFLAG2 Device specific cache flags 1... .... SZQFABPR X'80' SZQFABPR FAStT-alt ctrl batteries present .1.. .... SZQFBPR X'40' SZQFBPR FAStT-batteries present ..1. .... SZQFACMA X'20' SZQFACMA FAStT-alt ctrl cache mirror activ ...1 .... SZQFCMA X'10' SZQFCMA FAStT-ctrl cache mirror active .... 1... SZQFABOK X'08' SZQFABOK FAStT-alt ctrl batteries ok .... .1.. SZQFBOK X'04' SZQFBOK FAStT-ctrl batteries ok .... ..1. SZQFRCA X'02' SZQFRCA FAStT-read cache active .... ...1 SZQFWCA X'01' SZQFWCA FAStT-write cache active 003A 58 Bitstring 1 SZQFLAG3 Device specific cache flags 003B 59 Bitstring 1 SZQFLAG4 Device specific cache flags 003C 60 Bitstring 2 * Reserved for future IBM use 003E 62 Bitstring 1 SZQIEEET IEEE id type 003F 63 Bitstring 1 SZQIEEEL IEEE id length 0040 64 Bitstring 32 SZQIEEE EBCDIC IEEE id 0060 96 Bitstring 20 * Reserved for future IBM use 00000074 SZQDEVSZ *-SZQDEVIN Size of device information This dsect is for IOSC_QT_DEVICE_INFO returned path data. (query device information IOSC_QOK_PATH_INFO) Overlays SZQPSTTI but is formatted to use only 8 24 byte areas This dsect must be updated when pathInfo_iocs H structure is updated.
SZQPTHIN DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SZQPTHIN IOSC_queryDevice Information Block 0000 0 Bitstring 2 * Reserved for future IBM use 0002 2 Bitstring 1 SZQCONTY Connection type .... ...1 SZQSWTCH 1 SZQSWTCH Switched connection .... ..1. SZQPTPT 2 SZQPTPT Point to point connection 0003 3 Bitstring 1 SZQPREFP Preferred path if 1750 .... ...1 SZQPREF 1 SZQPREF Preferred path for 1750 0004 4 Signed 4 SZQPATHI Path id for this path 0008 8 Dbl-Word 8 SZQWWPN World Wide Port Name 0010 16 Dbl-Word 8 SZQSCID SCSI id 00000018 SZQPTHSZ *-SZQPTHIN Size of path information
SZQBK Storage Layout
*** SZQBK - IOSC_queryDevice Information Block * * +-------------+------+------+---------------------------+ * 0 | SZQQUERY |:DSTAT|//////| SZQDTIME | * +-------------+------+------+---------------------------+ * 8 | SZQDRATE | SZQDBLKS | * +---------------------------+---------------------------+ * 10 | SZQDXFER | SZQDBLKR | * +---------------------------+---------------------------+ * 18 | SZQDBLKW | SZQDSEEK | * +---------------------------+---------------------------+ * 20 | SZQDQDPT |///////////////////////////| * +---------------------------+///////////////////////////| * 28 |///////////////////////////////////////////////////////| * =///////////////////////////////////////////////////////= * |///////////////////////////+---------------------------+ * |///////////////////////////| | * +---------------------------+ | * 78 | | * = SZQPSTTI = * | +---------------------------+ * | | 174 * +---------------------------+ * *** SZQBK - IOSC_queryDevice Information Block *** Overlay for SZQDSTAT in SZQBK * * +------+------+---------------------------+ * 0 ... 2 |:DEVST|:PTHCT| | * +-------------+------+------+ | * | SZQPATHS | * | +---------------------------+ * | | 14 * +---------------------------+ * *** Overlay for SZQDSTAT in SZQBK *** SZQSTATS - IOSC_queryDevice Information Block * * +-------------+------+------+---------------------------+ * 0 | SZQPIDNM |:PSTAT|//////| SZQPTIME | * +-------------+------+------+---------------------------+ * 8 | SZQPRATE | SZQPXFER | * +---------------------------+---------------------------+ * 10 | SZQPBLKR | SZQPBLKW | * +---------------------------+---------------------------+ * 18 | SZQPSEEK | SZQPQDPT | * +---------------------------+---------------------------+ * 20 * *** SZQSTATS - IOSC_queryDevice Information Block *** SZQSTATE - IOSC_queryDevice Information Block * * +------+------+ * 0 |:PTHID|:PTHST| 2 * +------+------+ * *** SZQSTATE - IOSC_queryDevice Information Block *** SZQDEVIN - IOSC_queryDevice Information Block * * +-------------+------+------+------+------+-------------+ * 0 | SZQQTYPE |:LUNST|:DEVTY|:VNDR1|:DPTHS| (006)- | * +-------------+------+------+------+------+-------------+ * 8 | -SZQVENID | | * +-----------------------------------------+ | * | SZQPROID | * | +-------------+ * | | SZQPRORL- | * +-------------+-------------+-------------+-------------+ * 20 | -(01E) |/////////////| SZQBLKSZ | * +-------------+-------------+---------------------------+ * 28 | SZQNUMBK | * +-------------------------------------------------------+ * 30 | SZQBLKSL | * +------+------+------+------+-------------+------+------+ * 38 |:FLAG1|:FLAG2|:FLAG3|:FLAG4|/////////////|:IEEET|:IEEEL| * +------+------+------+------+-------------+------+------+ * 40 | | * = SZQIEEE = * | | * +-------------------------------------------------------+ * 60 |///////////////////////////////////////////////////////| * =///////////////////////////////////////////////////////= * |///////////////////////////+---------------------------+ * |///////////////////////////| 74 * +---------------------------+ * *** SZQDEVIN - IOSC_queryDevice Information Block *** SZQPTHIN - IOSC_queryDevice Information Block * * +-------------+------+------+---------------------------+ * 0 |/////////////|:CONTY|:PREFP| SZQPATHI | * +-------------+------+------+---------------------------+ * 8 | SZQWWPN | * +-------------------------------------------------------+ * 10 | SZQSCID | * +-------------------------------------------------------+ * 18 * *** SZQPTHIN - IOSC_queryDevice Information Block
SZQBK Cross Reference
Symbol Dspl Value -------------- ---- ----- SZQBLKSL 0030 SZQBLKSZ 0024 SZQCONTY 0002 SZQDACT 0002 00000003 SZQDBLKR 0014 SZQDBLKS 000C SZQDBLKW 0018 SZQDDEVP 0000 02 SZQDDEVS 0000 01 SZQDDKPT 0000 04 SZQDDSKS 0000 03 SZQDERR 0002 00000005 SZQDEVST 0002 SZQDEVSZ 0060 00000074 SZQDEVTY 0003 SZQDINFO 0000 07 SZQDLD 0002 00000002 SZQDNLD 0002 00000001 SZQDPACT 0001 00000001 SZQDPERR 0001 00000004 SZQDPIER 0001 00000003 SZQDPSTP 0001 00000002 SZQDPTHS 0005 SZQDQDPT 0020 SZQDRATE 0008 SZQDSEEK 001C SZQDSTAT 0002 SZQDSTP 0002 00000004 SZQDTIME 0004 SZQDXFER 0010 SZQFABOK 0039 08 SZQFABPR 0039 80 SZQFACMA 0039 20 SZQFBOK 0039 04 SZQFBPR 0039 40 SZQFCMA 0039 10 SZQFCME 0038 01 SZQFCWOB 0038 04 SZQFFWT 0038 02 SZQFLAGS 0038 SZQFLAG1 0038 SZQFLAG2 0039 SZQFLAG3 003A SZQFLAG4 003B SZQFRCA 0039 02 SZQFWCA 0039 01 SZQIEEE 0040 SZQIEEEL 003F SZQIEEET 003E SZQLUNST 0002 SZQNUMBK 0028 SZQPATHI 0004 SZQPATHS 0004 SZQPBLKR 0010 SZQPBLKW 0014 SZQPIDNM 0000 SZQPQDPT 001C SZQPRATE 0008 SZQPREF 0003 01 SZQPREFP 0003 SZQPROID 000E SZQPRORL 001E SZQPSEEK 0018 SZQPSTAT 0002 SZQPSTTI 0074 SZQPTHCT 0003 SZQPTHID 0000 SZQPTHST 0001 SZQPTHSZ 0010 00000018 SZQPTIME 0004 SZQPTPT 0002 02 SZQPXFER 000C SZQQTYPE 0000 SZQQUERY 0000 SZQSCID 0010 SZQSIZE 0074 0000002F SZQSIZEB 0074 00000174 SZQSTASZ 0001 00000002 SZQSTSSZ 001C 00000020 SZQSWTCH 0002 01 SZQVENID 0006 SZQVNDR1 0004 SZQWWPN 0008
This information is based on z/VM V5R4.0. Last updated on 18 Feb 2010 at 04:16:57 EDT.
Copyright IBM Corporation, 1990, 2009