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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. |
ACPBK
Cross Reference (Contains links to field and bit definitions)
ACPBK Prolog
Name : HCPACPBK
Description: CP Access Pointer Block
DSECT : ACPBK
Function : The ACPBK contains pointers to the ACSBK
blocks.
Located by : SYSCM.SYSACPBK
Created by : Initialization
Deleted by : None
ACPBK Control Block Content
ACPBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure ACPBK CP Access Pointer Block 0000 0 Address 4 * Reserved 0004 4 Address 4 * Reserved 0008 8 Signed 2 ACPMAX Max number of subscripted entries 000A 10 Signed 2 ACPCCWN Count of d-words for CCW building 000C 12 Address 4 ACPINACC Pointer to ACCBK for init access 0010 16 Address 4 ACPVMDBK Pointer to VMDBK owning VDEVs 0014 20 Address 4 * Reserved 0018 24 Bitstring 1 ACPBKV (0) Start of variable length data The following is subscripted (1:ACPMAX) 0018 24 Dbl-Word 8 ACPACCLK (3) Lockword to serialize chains 0030 48 Dbl-Word 8 * Reserved 0038 56 Signed 4 * Reserved 003C 60 Address 4 ACPACSA Pointer to HCPACSBK 00000028 ACPACSAL *-ACPACCLK Length of each entry Length of ACPBK in dwords 00000085 ACPBKSZD ((ACPACSAL*ACPFMMAX)+(ACPBKV-ACPB K)+7)/8 0000001A ACPFMMAX 26 Maximum number of entries
ACPBK Storage Layout
*** ACPBK - CP Access Pointer Block * * +---------------------------+---------------------------+ * 0 |///////////////////////////|///////////////////////////| * +-------------+-------------+---------------------------+ * 8 | ACPMAX | ACPCCWN | ACPINACC | * +-------------+-------------+---------------------------+ * 10 | ACPVMDBK |///////////////////////////| * +---------------------------+---------------------------+ * 18 | | * = ACPBKV = * | | * +-------------------------------------------------------+ * *** ACPBK - CP Access Pointer Block *** Overlay for ACPBKV in ACPBK * * +-------------------------------------------------------+ * 18 | | * = ACPACCLK = * | | * +-------------------------------------------------------+ * 30 |///////////////////////////////////////////////////////| * +---------------------------+---------------------------+ * 38 |///////////////////////////| ACPACSA | * +---------------------------+---------------------------+ * 40 * *** Overlay for ACPBKV in ACPBK
ACPBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----ACPACCLK 0018
ACPACSA 003C
ACPACSAL 003C 00000028
ACPBKSZD 003C 00000085
ACPBKV 0018
ACPCCWN 000A
ACPFMMAX 003C 0000001A
ACPINACC 000C
ACPMAX 0008
ACPVMDBK 0010
Last updated on 3 Aug 1999 at 11:38:26 EDT.
Copyright IBM Corporation, 1990, 1999