|
Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
CDPFX
Control Block Contents
CDPFX DSECT
Cross Reference (Contains links to field and bit definitions)
CDPFX Prolog
NAME : HCPCDPFX DESCRIPTION: Prefix CCW arument mapping DSECT : CDPFX FUNCTION : Map the argument of a Prefix CCW LOCATED BY : None CREATED BY : None DELETED BY : None
CDPFX Control Block Content
CDPFX DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure CDPFX Prefix CCW arument mapping 0000 0 Bitstring 66 CDPDATA (0) Basic Prefix information 0000 0 Bitstring 1 CDPFMT Prefix Format 00000000 CDPBPFX X'00' Basic Prefix Format 00000001 CDPBLRE X'01' Basic + Locate Record Extended 00000002 CDPBPSF X'02' Basic + Perform Subsystem Functn 00000020 CDPTPF X'20' TPF Format 0001 1 Bitstring 1 CDPFDVAL Field Validity 1... .... CDPDXVLD X'80' Define Extent information valid .1.. .... CDPTSTMP X'40' Time stamp in byts 28-35 valid ..1. .... CDPVBASE X'20' Verify base address 0002 2 Bitstring 1 CDPBASEA Base address 0003 3 Bitstring 1 CDPAUXIL Auxiliary byte 1... .... CDPSMR X'80' Suspend Multi. Path Reconnect .1.. .... CDPRCCE X'40' Remote Copy Continue on Error ..1. .... CDPRDE X'20' Return DE before data hardened ...1 .... CDPVMCP X'10' VM/CP mode DASD format .... 1... CDPNOPRM X'08' Don't check DX/LRE parameters .... .1.. CDPNOEXT X'04' Don't enforce extent checking 0004 4 Bitstring 1 * (8) Not defined Define Extent data 000C 12 Bitstring 32 CDPDXDAT (0) Define Extent Data 000C 12 Bitstring 1 * Mask Byte 000D 13 Bitstring 1 CDPDXGLB Global Attribute byte 000E 14 Bitstring 1 * (5) 0013 19 Bitstring 1 CDPDXGBE ..1. .... CDPDXGTZ X'20' TZ bit 0014 20 Signed 4 CDPDXSXT Starting Extent 0018 24 Signed 4 CDPDXEXT Ending Extent 001C 28 Bitstring 8 CDPDXTIM (0) System Time Stamp 001C 28 Signed 4 * Hi order TOD word 0020 32 Signed 4 * Lo order TOD word 0024 36 Bitstring 1 * (8) .. Locate Record Extended format 002C 44 Bitstring 22 CDPLRE Locate Record Extended Data 00000009 CDPFXLEN (((*-CDPFX)+7)/8) Block size in DWORDs Redefinition area for the PSF format 002C 44 Bitstring 18 * Not used 003E 62 Bitstring 1 CDPSFORD PSF order 003F 63 Bitstring 1 CDPSFLGS PSF flags PSF order unique parameters .follow. Redefinition area for the TPF format 000C 12 Bitstring 1 * Not used 000D 13 Bitstring 1 CDPTPFGA Global Attributes byte 000000C0 CDPECKD X'C0' ECKD Mode 000000C2 CDPECKFW X'C2' ECKD Mode + Cache Fast Write 000E 14 Bitstring 2 CDPTBKSZ DX Blocksize 0010 16 Bitstring 2 CDPTFWID Cache Fast Write Data ID 0012 18 Bitstring 26 * Not used 002C 44 Bitstring 1 CDPTPFOB Operation Byte 00000001 CDPTPFWR X'01' Write Data 00000016 CDPTPFRD X'16' Read Records 002D 45 Bitstring 3 * Not used 0030 48 Bitstring 4 CDPTSEEK (0) Seek address 0030 48 Bitstring 2 CDPTPFCC ..Seek Cylinder 0032 50 Bitstring 2 CDPTPFHH ..Seek Head 0034 52 Bitstring 5 CDPTPSID Search argument 0039 57 Bitstring 1 CDPTSECN Sector number
CDPFX Storage Layout
*** CDPFX - Prefix CCW arument mapping
*
* +------+------+------+------+---------------------------+
* 0 |CDPFMT|:FDVAL|:BASEA|:AUXIL|///////////////////////////|
* +------+------+------+------+------+------+-------------+
* 8 |///////////////////////////|//////|:DXGLB|/////////////|
* +--------------------+------+------+------+-------------+
* 10 |////////////////////|:DXGBE| CDPDXSXT |
* +--------------------+------+---------------------------+
* 18 | CDPDXEXT |///////////////////////////|
* +---------------------------+---------------------------+
* 20 |///////////////////////////|///////////////////////////|
* +---------------------------+---------------------------+
* 28 |///////////////////////////| |
* +---------------------------+ |
* 30 | |
* = CDPLRE =
* | +-----------------------------------------+
* | | 42
* +-------------+
*
*** CDPFX - Prefix CCW arument mapping
*** Overlay for CDPLRE in CDPFX
*
* +---------------------------+
* 28 ... 2C |///////////////////////////|
* +---------------------------+///////////////////////////|
* |///////////////////////////////////////////////////////|
* |/////////////////////////////////////////+------+------+
* 38 |/////////////////////////////////////////|:SFORD|:SFLGS|
* +-----------------------------------------+------+------+
* 40
*
*** Overlay for CDPLRE in CDPFX
*** Overlay for CDPDXDAT in CDPFX
*
* +------+------+-------------+
* 8 ... C |//////|:TPFGA| CDPTBKSZ |
* +-------------+-------------+------+------+-------------+
* 10 | CDPTFWID |/////////////////////////////////////////|
* +-------------+/////////////////////////////////////////|
* 18 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////+------+--------------------+
* 28 |///////////////////////////|:TPFOB|////////////////////|
* +-------------+-------------+------+--------------------+
* 30 | CDPTPFCC | CDPTPFHH | CDPTPSID- |
* +------+------+-------------+---------------------------+
* 38 |-(034)|:TSECN| 3A
* +------+------+
*
*** Overlay for CDPDXDAT in CDPFX
CDPFX Cross Reference
Symbol Dspl Value -------------- ---- ----- CDPAUXIL 0003 CDPBASEA 0002 CDPBLRE 0000 00000001 CDPBPFX 0000 00000000 CDPBPSF 0000 00000002 CDPDATA 0000 CDPDXDAT 000C CDPDXEXT 0018 CDPDXGBE 0013 CDPDXGLB 000D CDPDXGTZ 0013 20 CDPDXSXT 0014 CDPDXTIM 001C CDPDXVLD 0001 80 CDPECKD 000D 000000C0 CDPECKFW 000D 000000C2 CDPFDVAL 0001 CDPFMT 0000 CDPFXLEN 002C 00000009 CDPLRE 002C CDPNOEXT 0003 04 CDPNOPRM 0003 08 CDPRCCE 0003 40 CDPRDE 0003 20 CDPSFLGS 003F CDPSFORD 003E CDPSMR 0003 80 CDPTBKSZ 000E CDPTFWID 0010 CDPTPF 0000 00000020 CDPTPFCC 0030 CDPTPFGA 000D CDPTPFHH 0032 CDPTPFOB 002C CDPTPFRD 002C 00000016 CDPTPFWR 002C 00000001 CDPTPSID 0034 CDPTSECN 0039 CDPTSEEK 0030 CDPTSTMP 0001 40 CDPVBASE 0001 20 CDPVMCP 0003 10
Copyright IBM Corporation, 1990, 2001