Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of z/VM.

PCSBK

Prolog  

Control Block Contents  
   PCSBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  


PCSBK Prolog

 NAME       : HCPPCSBK
 DESCRIPTION: PROCESSOR CONTROLLER STATUS BLOCK
 DSECT      : PCSBK
 FUNCTION   : THIS CONTROL BLOCK RECORDS ALL COMMUNICATION STATUS
              BETWEEN CP AND THE PROCESSOR CONTROLLER.  THE REAL
              PROCESSOR CONTROLLER REQUEST STATUS IS STRICTLY
              MAINTAINED BY THE PROCESSING SUPPORT MODULE HCPPCR.
 LOCATED BY : SYSPCSBK  ANCHOR FIELD IN HCPSYSCM
 CREATED BY : HCPPCR    ALLOCATED AND INITIALIZED WHEN REAL PROCESSOR
              CONTROLLER REQUEST PROCESS IS FIRST INVOKED.
 DELETED BY : NEVER DELETED

 

PCSBK Control Block Content


PCSBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      PCSBK          PROCESSOR CONTROLLER STATUS BLOCK
0000    0 Address      4 PCSPCRQ        POINTER TO FIRST PCRBK IN PC
                                        QUEUE
0004    4 Address      4 PCSACTIV       ADDRESS OF PROCESSOR CONTROLLER
                                        DATA BLOCK SENT IN DIAGNOSE INST.
0008    8 Address      4 PCSREQBK       ADDRESS OF ACTIVE PCRBK
000C   12 Address      4 PCSTIADD       ADDRESS OF TRQBK USED FOR PC
                                        TIMER INTERVAL
0010   16 Bitstring    1 PCSRQFLG       PROCESSOR CONTROLLER REQUEST FLAG
                                        NOTES : ONLY THE CONDITION CODE 2
                                        (PSWCOND2) DEFINITION IS USED BY
                                        PCSDIAGC.
          00000000       PCSRQNON       X'00' NO VALID REQUESTS MADE YET
          00000001       PCSRQFST       X'01' FIRST VALID REQUEST
          000000FF       PCSRQPST       X'FF' PAST FIRST VALID REQUEST
0011   17 Bitstring    1 PCSICC         CONDITION CODE RESULTING FROM PC
                                        INTERFACE INSTRUCTION
          11.. ....      PSWASMSK       X'C0' ADDRESS SPACE CONTROL MASK
          11.. ....      PSWHMODE       X'C0' HOME-SPACE MODE
          1... ....      PSWSMODE       X'80' SECONDARY MODE
          .1.. ....      PSWAMODE       X'40' ACCESS-REGISTER MODE
          ..11 ....      PSWCOND        X'30' PSW CONDITION CODE
          ..1. ....      PSWCOND2       X'20' PSW CONDITION CODE BIT FOR
                                        CC=2,3
          ...1 ....      PSWCOND1       X'10' PSW CONDITION CODE BIT FOR
                                        CC=1,3
          .... 1111      PSWPMSK        X'0F' FIXO+DECO+EXUN+SIGN PROGRAM
                                        MASK
          .... 1...      PSWFIXO        X'08' FIXED-PT OVERFLOW INTRPT
                                        MASK
          .... .1..      PSWDECO        X'04' DECIMAL OVERFLOW INTRPT
                                        MASK
          .... ..1.      PSWEXUN        X'02' EXPONENT UNDERFLOW INTRPT
                                        MASK
          .... ...1      PSWSIGN        X'01' SIGNIFICANCE INTERRUPT MASK
          .... ....      PSWPMODE       X'00' PRIMARY-SPACE MODE
0012   18 Bitstring    1 *              Reserved for future IBM use
0013   19 Bitstring    1 PCSRPCIF       REAL PROCESSOR CONTROLLER
                                        INTERFACES USED BY VM/XA FOR REAL
                                        REQUEST PROCESSING
          1... ....      SYSRSCIF       X'80' SERVICE CALL TYPE INTERFACE
          .1.. ....      SYSRDGIF       X'40' DIAGNOSE X'80' TYPE
                                        INTERFACE
0014   20 Bitstring    1 PCSSTATS       PROCESSOR CONTROLLER STATUS BITS
          1... ....      PCSSPDMC       X'80' SERVICE PROCESSOR DAMAGE
                                        MACHINE CHECK HAS BEEN RECEIVED
          .1.. ....      PCSLDISC       X'40' PROCESSOR CONTROLLER IS
                                        LOGICALLY DISCONNECTED FROM THE
                                        SYSTEM
          .... ..1.      PCSINOPW       X'02' PC INTERRUPT HANDLER HAS
                                        OPENED A WINDOW TO ALLOW THE PC
                                        TIMER INTERRUPT TO HAVE PRIORITY
                                        OVER THE TIMEOUT INTERRUPT IN THE
                                        SITUATION WHERE THEY ARE BOTH
                                        RECEIVED AT THE SAME TIME
          .... ...1      PCSPRVRQ       X'01' ASSUMPTION IS MADE THAT THE
                                        PC IS BUSY FROM A PREVIOUS
                                        REQUEST ACTIVATED PRIOR TO THE
                                        IPL OF THIS SYSTEM
0015   21 Bitstring    1 PCSSTATE       STATE(S) OF THE ACTIVE REQUEST
          1... ....      PCSXPEND       X'80' EXTERNAL INTERRUPT PENDING
                                        (PROCESSOR CONTROLLER WILL SIGNAL
                                        COMPLETION)
          .1.. ....      PCSRSREQ       X'40' ACTIVE REQUEST IS FOR A
                                        VIRTUAL SYSTEM WHICH HAS BEEN
                                        RESET
          ..1. ....      PCSTOUT        X'20' TIMER INTERVAL HAS EXPIRED
                                        FOR ACTIVE REQUEST
0016   22 Bitstring    2 *              RESERVED BY IBM FOR FUTURE USE
0018   24 Address      4 PCSREQST       Address of first active PCRBK
001C   28 Address      4 PCSREQND       Address of last active PCRBK
0020   32 Dbl-Word     8 PCSIOCPL (0)   DOUBLE IOCP LOCKS
0020   32 Address      4 PCSIOCPW       IOCP WRITE LOCK (BASE ADDRESS OF
                                        VMDBK CONFIGURATION ISSUING AN
                                        IOCP WRITE REQUEST)
0024   36 Address      4 PCSIOCPR       IOCP READ LOCK (BASE ADDRESS OF
                                        VMDBK CONFIGURATION ISSUING AN
                                        IOCP READ REQUEST)
0028   40 Dbl-Word     8 *              RESERVED FOR FUTURE IBM USE
0030   48 Bitstring    1 PCSDSIVL       INDICATES WHEN A QUEUED REQUEST
                                        TO WRITE TO IOCDS DATASET HAS
                                        BEEN ACTIVATED AND THE DATA SET
                                        IS NOW OPEN (INVALID)
          00000010       PCRIOCPW       X'10' IOCP OPEN WRITE REQUEST
                                        STARTED; WHEN THIS REQUEST IS
                                        ACTIVATED SEND A MESSAGE THAT
                                        THAT THE IOCDS DATA SET WILL BE
                                        ALTERED (MARKED INVALID)
          00000000       PCRNODS        X'00' FLAG TO SHOW THAT NO IOCDS
                                        DATASET IS CURRENTLY BEING
                                        ALTERED NOTES : CODES DEFINED FOR
                                        PCRRPCIF BY HCPSYSCM SYSRPCIF
0031   49 Bitstring    1 PCSDSLVL       DATASET LEVEL USED DURING AN IOCP
                                        READ OR WRITE SEQUENCE
0032   50 Bitstring    2 *              RESERVED BY IBM FOR FUTURE USE
0034   52 Signed       4 *              RESERVED BY IBM FOR FUTURE USE
          00000007       PCSSIZE        (*-PCSBK+7)/8 :SIZE OF BLOCK IN
                                        DOUBLEWORDS

 

PCSBK Storage Layout

          
*** PCSBK - PROCESSOR CONTROLLER STATUS BLOCK
*
*     +---------------------------+---------------------------+
*   0 |         PCSPCRQ           |         PCSACTIV          |
*     +---------------------------+---------------------------+
*   8 |         PCSREQBK          |         PCSTIADD          |
*     +------+------+------+------+------+------+-------------+
*  10 |:RQFLG|PCSICC|//////|:RPCIF|:STATS|:STATE|/////////////|
*     +------+------+------+------+------+------+-------------+
*  18 |         PCSREQST          |         PCSREQND          |
*     +---------------------------+---------------------------+
*  20 |         PCSIOCPW          |         PCSIOCPR          |
*     +---------------------------+---------------------------+
*  28 |///////////////////////////////////////////////////////|
*     +------+------+-------------+---------------------------+
*  30 |:DSIVL|:DSLVL|/////////////|///////////////////////////|
*     +------+------+-------------+---------------------------+
*  38
*
*** PCSBK - PROCESSOR CONTROLLER STATUS BLOCK

 

PCSBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
PCRIOCPW       0030 00000010
PCRNODS        0030 00000000
PCSACTIV       0004
PCSDSIVL       0030
PCSDSLVL       0031
PCSICC         0011
PCSINOPW       0014 02
PCSIOCPL       0020
PCSIOCPR       0024
PCSIOCPW       0020
PCSLDISC       0014 40
PCSPCRQ        0000
PCSPRVRQ       0014 01
PCSREQBK       0008
PCSREQND       001C
PCSREQST       0018
PCSRPCIF       0013
PCSRQFLG       0010
PCSRQFST       0010 00000001
PCSRQNON       0010 00000000
PCSRQPST       0010 000000FF
PCSRSREQ       0015 40
PCSSIZE        0034 00000007
PCSSPDMC       0014 80
PCSSTATE       0015
PCSSTATS       0014
PCSTIADD       000C
PCSTOUT        0015 20
PCSXPEND       0015 80
PSWAMODE       0011 40
PSWASMSK       0011 C0
PSWCOND        0011 30
PSWCOND1       0011 10
PSWCOND2       0011 20
PSWDECO        0011 04
PSWEXUN        0011 02
PSWFIXO        0011 08
PSWHMODE       0011 C0
PSWPMODE       0011 00
PSWPMSK        0011 0F
PSWSIGN        0011 01
PSWSMODE       0011 80
SYSRDGIF       0013 40
SYSRSCIF       0013 80

This information is based on z/VM V4R1.0.
Last updated on 5 Jun 2001 at 16:07:23 EDT.
Copyright IBM Corporation, 1990, 2001