PCIHQ Back to Index page
 
Prolog 
Control Block Contents 
   PCIHQ 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.


  PCIHQ Prolog Top of page
  
 NAME       : HCPPCIHQ
 DESCRIPTION: PCI Information block
 DSECT      : PCIHQ
 FUNCTION   : This control block contains information for
              real and virtual PCI functions.
 LOCATED BY : For RPCI (1 per system):
              SYSCM :: SYSPCIHQ (PCIHQ)
              For VPCI (1 per VMDBK):
              VMDBASE (VMDBK) :: VMDCHC (CHCBK) -> CHCPCIHQ (PCIHQ)
 CREATED BY : HCPPCHIN - PCI Initialization (for RPCI)
              HCPBVMBK - Build a VMDBK (for VPCI)
 DELETED BY : HCPUSPFF - User LOGOFF (for VPCI)
 
 
  PCIHQ Control Block Content Top of page
  




 PCIHQ DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      PCIHQ          PCI Information block
0000    0 Dbl-Word     8 PCIHQLCK (3)   Configuration lock (RPCI or VPCI)
0018   24 Address      4 PCIHQHQO       Anchor for ordered list of
                                        R/VPCIs
001C   28 Address      4 PCIHQPFID      Function ID hash table pointer
0020   32 Address      4 PCIHQHNDG      General handle hash table pointer
0024   36 Address      4 PCIHQHNDE      Enabled handle hash table pointer
0028   40 Address      4 PCIHQFPT       PCI Facilities pointer
002C   44 Bitstring   20 *              Reserved for future IBM use
0040   64 Bitstring  128 PCIHQINF       RPCI or VPCI information This
                                        section is for fields associated
                                        with RPCIs
0040   64 Dbl-Word     8 PCIHQGLK (3)   Shared/Exclusive Defer Lock to
                                        serialize the GAIT
0058   88 Address      4 PCIHQ2PG       Address of 2-pages used for CLP
                                        cmds Serialized by PCIHQLCK when
                                        not used for system init &
                                        shutdown
005C   92 Bitstring  100 *              Reserved for future IBM use
      This section is for fields associated with VPCIs
0040   64 Signed       4 PCIHQECB       ECBBK
0044   68 Signed       4 PCIHQTIM       Measurement timer
0048   72 Bitstring  116 *              Reserved for future IBM use
          00000018       PCIHQSIZ       (*-PCIHQ+7)/8 SIZE OF PCI HASH
                                        QUEUE BLOCK
 
 
  PCIHQ Storage Layout Top of page
  
          
*** PCIHQ - PCI Information block
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       PCIHQLCK                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  18 |         PCIHQHQO          |        PCIHQPFID          |
*     +---------------------------+---------------------------+
*  20 |        PCIHQHNDG          |        PCIHQHNDE          |
*     +---------------------------+---------------------------+
*  28 |         PCIHQFPT          |///////////////////////////|
*     +---------------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  40 |                                                       |
*     =                       PCIHQINF                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  C0
*
*** PCIHQ - PCI Information block
          
*** Overlay for PCIHQINF in PCIHQ
*
*     +-------------------------------------------------------+
*  40 |                                                       |
*     =                       PCIHQGLK                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  58 |         PCIHQ2PG          |///////////////////////////|
*     +---------------------------+///////////////////////////|
*  60 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  C0
*
*** Overlay for PCIHQINF in PCIHQ
          
*** Overlay for PCIHQINF in PCIHQ
*
*     +---------------------------+---------------------------+
*  40 |         PCIHQECB          |         PCIHQTIM          |
*     +---------------------------+---------------------------+
*  48 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////+---------------------------+
*     |///////////////////////////| BC
*     +---------------------------+
*
*** Overlay for PCIHQINF in PCIHQ
 
 
  PCIHQ Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
PCIHQECB       0040
PCIHQFPT       0028
PCIHQGLK       0040
PCIHQHNDE      0024
PCIHQHNDG      0020
PCIHQHQO       0018
PCIHQINF       0040
PCIHQLCK       0000
PCIHQPFID      001C
PCIHQSIZ       0048 00000018
PCIHQTIM       0044
PCIHQ2PG       0058
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:53:18 EDT.
Copyright IBM Corporation, 1990, 2022