SCQBK Back to Index page
 
Prolog 
Control Block Contents 
   SCQBK DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  SCQBK Prolog Top of page
  
 NAME       : HCPSCQBK
 DESCRIPTION: Native SCSI Container QDIO Control
              Block
 DSECT      : SCQBK
 FUNCTION   :
              SCQBK maps the IN/OUT data structs for passing
              values between the Native SCSI Container and the
              QDIO RDEV.
 LOCATED BY : RDEVQDBK
 SERIALIZED : RDEV Lock
 RELOCATION CONSIDERATIONS : None
 CREATED BY : Dynamically created by HCPGETST when the
              third PSIO_startCCW call is made to activate
              the QDIO Queues for the Native SCSI Container.
 DELETED BY : Deleted by HCPRELST when a QDIO error
              condition occurs, i.e the RDEV comes out
              of the QDIO Active state.
 
 
  SCQBK Control Block Content Top of page
  




 SCQBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      SCQBK          Native SCSI Container QDIO Control
0000    0 Address      8 SCQDATIN (8)
0000    0 Address      8 SCQINTST (2)   ccw_vector_zct for
                                        normal_int_status
0010   16 Address      8 SCQCMPST (2)   ccw_vector_zct for
                                        normal_completion
0020   32 Address      8 SCQTHST (2)    ccw_vector_zct for other_status
0030   48 Address      8 SCQCCW         ptr to private_ccw_zct CCW and
                                        IDAW [IN]
0038   56 Address      8 SCQIORBK       ptr to QDIO Activate IORBK [IN]
0040   64 Bitstring   12 SCQSCSW        SCSW [OUT]
004C   76 Bitstring    1 SCQSTATE       QDIO Status [OUT]
          .... 1...      SCQISTAT       X'08' SCQISTAT Value for
                                        Intermediate status.
          .... .1..      SCQPSTAT       X'04' SCQPSTAT Value for Primary
                                        status.
          .... ...1      SCQOTHST       X'01' SCQOTHST Value for Other
                                        status.
004D   77 Bitstring    1 SCQDEND (0)    End of Native SCSI Container QDIO
                                        CB
          0000004D       SCQBYTSZ       (SCQDEND-SCQBK) size in bytes
          0000000A       SCQSIZE        (SCQDEND-SCQBK+7)/8 size in
                                        doublewords
 
 
  SCQBK Storage Layout Top of page
  
 
*** SCQBK - Native SCSI Container QDIO Control
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       SCQDATIN                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  40
*
*** SCQBK - Native SCSI Container QDIO Control
 
*** Overlay for SCQDATIN in SCQBK
*
*     +-------------------------------------------------------+
*   0 |                       SCQINTST                        |
*     |                                                       |
*     +-------------------------------------------------------+
*  10 |                       SCQCMPST                        |
*     |                                                       |
*     +-------------------------------------------------------+
*  20 |                       SCQTHST                         |
*     |                                                       |
*     +-------------------------------------------------------+
*  30 |                        SCQCCW                         |
*     +-------------------------------------------------------+
*  38 |                       SCQIORBK                        |
*     +-------------------------------------------------------+
*  40 |                       SCQSCSW                         |
*     |                           +------+--------------------+
*  48 |                           |:STATE|
*     +---------------------------+------+
*
*** Overlay for SCQDATIN in SCQBK
 
 
  SCQBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
SCQBYTSZ       004D 0000004D
SCQCCW         0030
SCQCMPST       0010
SCQDATIN       0000
SCQDEND        004D
SCQINTST       0000
SCQIORBK       0038
SCQISTAT       004C 08
SCQOTHST       004C 01
SCQPSTAT       004C 04
SCQSCSW        0040
SCQSIZE        004D 0000000A
SCQSTATE       004C
SCQTHST        0020
 
This information is based on z/VM 6.4.0 Last updated on 24 Aug 2016 at 09:42:59 EDT.
Copyright IBM Corporation, 1990, 2016