Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
ARSPL
Control Block Contents
ARSPL DSECT
Cross Reference (Contains links to field and bit definitions)
ARSPL Prolog
NAME : HCPARSPL DESCRIPTION: Access Real Subsystem Parameters DSECT : ARSPL FUNCTION : Describe the parameters for Diagnose X'254'. LOCATED BY : Register Rx contains the virtual address of the ARSPL in guest storage at the time Diagnose X'254' is issued. CREATED BY : The program issuing Diagnose X'254'. DELETED BY : The program issuing Diagnose X'254'. COMMENTS : The ARSPL is fetched by CP from guest storage when Diagnose X'254' is issued by the guest. The ARSPL will be stored back in guest storage by CP upon completion of the specific diagnose function. RELOCATION CONSIDERATIONS : None
ARSPL Control Block Content
ARSPL DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure ARSPL Access Real Subsystem Parameters 0000 0 Bitstring 2 ARSDIAGN Diagnose number self descriptor 0002 2 Bitstring 1 ARSFUNCC Diagnose function code 0003 3 Bitstring 1 ARSPLLEN ARSPL length self descriptor 0004 4 Bitstring 4 ARSRESV1 Reserved for future IBM use 0008 8 Bitstring 14 ARSSSID Subsystem IDentifier (SSID) 0016 22 Bitstring 18 ARSGETSR (0) Get Status function reserved 0016 22 Bitstring 2 ARSDEVNO Device number 0018 24 Bitstring 1 ARSFLAG1 Flag byte 1 00000080 ARSTAPLB X'80' ARSTAPLB Subsystem is a Tape Library 00000040 ARSIGPLM X'40' ARSIGPLM Ignore SSID Plant of Manufacture 0019 25 Bitstring 63 ARSOPCLR (0) Open and Close function reserved 0019 25 Bitstring 1 ARSFLAG2 Flag byte 2 00000080 ARSCCWF1 X'80' ARSCCWF1 Format-1 CCWs are specified 00000040 ARSDEVSP X'40' ARSDEVSP Device number is specified 001A 26 Bitstring 1 ARSSPKEY Guest storage protection key 001B 27 Bitstring 1 ARSRESV2 Reserved for future IBM use 001C 28 Bitstring 4 ARSINTPM Guest interruption parameter 0020 32 Address 4 ARSCPA (0) Guest channel program address 0020 32 Bitstring 3 * CPA High-order 3 bytes 0023 35 Bitstring 1 ARSCPA3 CPA Alignment test byte 0024 36 Address 4 ARSICPA Guest CCW + 8 interrupt address 0028 40 Bitstring 1 ARSDVST Device status 0029 41 Bitstring 1 ARSSCHST Subchannel status 002A 42 Bitstring 2 ARSRESCT Residual count 002C 44 Bitstring 2 ARSSNSCT Sense data count 002E 46 Bitstring 10 ARSRESV3 Reserved for future IBM use 0038 56 Bitstring 32 ARSSENSE Sense data 00000058 ARSBYLEN *-ARSPL Byte length of ARSPL 0000000B ARSDWSIZ ((ARSBYLEN+7)/8) Doubleword length of ARSPL
ARSPL Storage Layout
*** ARSPL - Access Real Subsystem Parameters * * +-------------+------+------+---------------------------+ * 0 | ARSDIAGN |:FUNCC|:PLLEN| ARSRESV1 | * +-------------+------+------+---------------------------+ * 8 | ARSSSID | * | +-------------+ * 10 | | ARSDEVNO | * +------+------+------+------+-------------+-------------+ * 18 |:FLAG1|:FLAG2|:SPKEY|:RESV2| ARSINTPM | * +------+------+------+------+---------------------------+ * 20 |////////////////////|:CPA3 | ARSICPA | * +------+------+------+------+-------------+-------------+ * 28 |:DVST |:SCHST| ARSRESCT | ARSSNSCT | ARSRESV3 | * +------+------+-------------+-------------+ | * | | * +-------------------------------------------------------+ * 38 | | * = ARSSENSE = * | | * +-------------------------------------------------------+ * 58 * *** ARSPL - Access Real Subsystem Parameters
ARSPL Cross Reference
Symbol Dspl Value -------------- ---- ----- ARSBYLEN 0038 00000058 ARSCCWF1 0019 00000080 ARSCPA 0020 ARSCPA3 0023 ARSDEVNO 0016 ARSDEVSP 0019 00000040 ARSDIAGN 0000 ARSDVST 0028 ARSDWSIZ 0038 0000000B ARSFLAG1 0018 ARSFLAG2 0019 ARSFUNCC 0002 ARSGETSR 0016 ARSICPA 0024 ARSIGPLM 0018 00000040 ARSINTPM 001C ARSOPCLR 0019 ARSPLLEN 0003 ARSRESCT 002A ARSRESV1 0004 ARSRESV2 001B ARSRESV3 002E ARSSCHST 0029 ARSSENSE 0038 ARSSNSCT 002C ARSSPKEY 001A ARSSSID 0008 ARSTAPLB 0018 00000080
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