Overview | HP UX 11i v1 I/O Cards guide

ZCOM Message Handling

Overview

Overview

ZCOM message handling is achieved through logical constructs called ZLUs which maintain queues for messages to terminals and programs. The terminal ZLUs are either defined at ZCOM configuration time using ttgen, or can be created programmatically using the Dynamic System Configuration functions; the program ZLUs are allocated dynamically from a pool of ZLUs when requested.

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Chapter 2

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HP UX 11i v1 I/O Cards manual Overview

Contents

ACC Programmer’s Reference Guide Page Legal Notices Page Printing History Ninth Edition April Release B.03.10 HP-UX Related Documentation Hardware Manuals Contents Zcom Tables and Data Structures Zcom C I/F Library Routines Contents Zcom Subsystem Introduction Zcom Software Overview Overview of Zcom Software Structure Zcom Zcom Subsystem Components Zcom Software Overview Zcom Concepts Definition and Features of ZLUs Program ZLUs Zcom Concepts User Interface References Zcom Message Handling Overview ZLU Definition Mapped ZLUs Message Queuing Program Message Queueing Physical Terminal Table Priorities Multiplexing Outbound Multiplexing Outbound Multiplexing Inbound Multiplexing Inbound Multoplexing PTZRVR=PZLU Pzlu Terminal State Terminal State Error Handling Error Handling Zcom Tables and Data Zcom Tables and Data Structures Memory Organization Memory Organization Differences in 32-bit and 64-bit Data Structures Differences in 32-bit and 64-bit Data Structures Zcom Header Structure Hpzlu HpttblHpptbl Hpiftp Zcom Header Structure Zcom Header Structure Zcom Header Structure Zcom Header Structure Zcom Header Structure Ttgen Zcom Header Structure Qlbgrp QlbnamQlbqnb Qlbrsv Slbgrp SlbnamSlbsze Slboff Zcom Header Structure Node Entries Table FLAGS.event FLAGS.validFLAGS.status FLAGS.local Node Entries Table ZLU Tables Individual ZLU Entries ZLU Type Values Type Description ZLU Tables Logical Terminal Tables Ltzshrcvrs LthldqLthdqn Ltaddr Logical Terminal Tables System Status flags LTCWCT, LTTXCT, LTRXCT, Lterct Message and error counters Logical Status Structure Ltstat LTINST, LTBRCH, LTWORK, Ltarea Terminal logical ID Physical Terminal Tables Physical Terminal Tables User Maintainable Area Ptuser Field Name Field Description Field Type Size Bytes Physical Terminal Tables Physical Terminal Tables Physical Terminal Tables Terminal Status Field Ptdrst Firmware terminal status Ptfwst Physical Terminal Tables Physical Terminal Tables Interface Table Ifwinfo Interface HPA Value Inhpa 63-32 31-28 27-18 17-14 13-12 10-6 Symbol Value hex Meaning Interface Card Status Ifstat Scheduler Event Flags Ischdl Interface Table Interface Table Ipendgbufs Isubchbuf Ifirqbp Nextl Interface Table Zcomipstatund Zcomipstattxb Port Configuration Buffer Iportn Channel E1/T1 ACC Card FormatEcode Sync Where Timeslot Array Element StructureTxSubch TxFill Subchannel Specification Array Element Structure 31-30 29-24 23-8 IFIRQBUF, IRESPBUF, Istdtbuf DMA response buffers Datadelay Response Records Response Type Field Symbol Value Meaning ZcomrptypebufferZcomrptyperemote Zcomrptypeirr Response Records Queue Header Queue Header Area Qlimit QfdataQfunc Queue Header Queue Flags Chapter 101 Data Buffer Pool Organization of Buffer Pool Buffer Pool Layout when first initialized Free Buffer Header Structure zfbhtype Buffer flags Bfflag Field Block Size Used flag 106 Message Header MIDMRQ Mstype MsrespMzdest Mzsrce Message Type Mstype Response code for message type 2 Response code for all other message types Mrqcode MrqtermMrqstat Mrqtag Mrqcode Terminal request codes Request Value Description Setype SeflagSenode Setime Node Status Change Event Fields Zcomsetypenode NodenumNstat Spare Dynamic Reconfiguration Event Zcomsetypereconfig CfgclassCFGINFO1 116 Chapter 117 Zcom Kernel Data Ncard Chapter 119 HPA value of I/F card Hpano Chapter 121 SYS structure Zcom system global information, zsystype Current Zcom system status Name Value hex State Current Zcom system status Higher Order BitsName Value hex State Debug Level Field Format Debug Level Field Values Bit Name Value hex Meaning Chapter 125 Zcglock ZcmlockZcrlock Zcslock Lockp Refcount Zcom Kernel Data 128 Zcom C I/F Library Routines 130 ZLU configuration calls Zltstore Logical data storage allocation ZLU data transfer calls Chapter 133 ZLU Definition Man Pages Getdevice Getdevice Read Zcom device definitions Considerations Dpp Return param Example File, /opt/acc/cfg/zcomdevice Multiprotocol ACC Utilities ReferenceAscii file, /opt/acc/cfg/zcomdevice.txt Zdgen1, malloc3C Ltfind Description Logical terminal table. Note that if the logical Terminal is not found, ibuf will not contain valid dataLen Length in bytes of ibuf 142 Chapter 143 Ltqdget Ltqdget Posix 1003.1c kernel threads API package. This routine has 146 Ltqdput 148 Chapter 149 Makezluname TTY Name Returned Name CommentMYZLU01 Makezluname Parameter and from the same TTY, the same ZLU name will be Ptfind 154 Pointer to a buffer into which the Zcom physical Terminal table data will be placed. Note that ifPhysical terminal is not found i.e., ierr != 0, then no Data is moved into zptt Return Value Zclos Cancellation point Chapter 159 Zcntl Send no wait, report errors Send no wait, report errors with bufferSend no wait Send no wait, definite status Mhp ACC Programmers’ Reference Guide Ibuf, lenRstat ReturnParam For rcode not all of them are applicable to zcntl Rtyp 164 Chapter 165 166 Zcomerror Not a cancellation point 168 Async-cancel safe Zcomlname Zcomlog3x Zcomlog 172 Int Unix error code, usually errno Unix error string will be loggedInt Zcom error code Zcom error string will be logged 174 Chapter 175 Zcomstatus ACC Programmers Reference Guide under ‘ZCOM Status Message Chapter 177 Zconfig Zap Return Param Response data Chapter 181 Zcomzconfigcntl ZcomzconfigsysZcomzconfigcard Zcomzconfigport Chapter 183 Configuration Data Header.configDSC Control Header.action No specific response data or error Data.setctl.cfgclassData.setctl.cfginfo1 Zcom subsystem Data.sysret.error Header.tag1 Header.tag2Data.setsys.sysname Data.setsys.qlimit Chapter 187 Dscreassignift Data.setcard.iftnoData.setcard.itype Data.setcard.fname Data.cardret.error Data.cardret.iftno Data.setport.portno Data.setport.rcodeData.setport.spare Data.setport.cnfg Value Encoding modesFM1 transition = FM0 transition = Value Parity select No Parity Odd parity Even parity Value Clock multiplier Value Rate 0000 Use Baud2 1000 19,200Value Rate Pmode Pmode2 Fsync Value Other port for clock synchronization Port Value T1 Transmit Attenuation Z7330B only 15 dB 22.5 dB Otherwise by default there is a delay to avoid T1/ESF mode contain an address whichUser device. By default the ACC is a user Performance report messages in T1/ESF mode Data.setport.qlimit Data.portret.iftno Data.portret.portnoData.portret.status Chapter 197 Configuration Data header.config Data.setportsc.iftno Data.setportsc.portnoData.setportsc.subchno Data.setportsc.rcode Data.setportsc.ptcfg-ptinfo.subchb.tmsl RTI Set to Mode Data.setportsc.ptcfg-ptinfo.subchb.specSet to Data.setportsc.len Data.portscret.status Chapter 203 Header.action ZcDSCCREATELTTPTT Create a new terminal LTT ZcDSCCREATELTTONPTT Create a new LTT on an existingData.setterm.daddr Data.setterm.iftno Data.setterm.portno Data.setterm.subchnoData.setterm.dtype Data.setterm.ltype Response Data data.termret.zaddr Chapter 207 208 Name Zeventrcvr 210 Chapter 211 ‘C’ structure for a Zcom Event Message is shown below Zcomsetypenode Files Zgetshrcvrlist Zgetshrcvrlist Get list of current shared receivers Table entry from which you want the shared receivers list Type of shared receiver list is set to ZcMAXSHAREDRCVRSShould have ZcMAXSHAREDRCVRS+1 entries 216 Name Zinfo Return , Tables and Data Structures sectionParam Returnvalue Files Zinit Zinit Zcom routine initialization Parameters Following fields Chapter 223 Zltmg Zltmg Move a logical terminal between groups Zltmg 226 Zltmx Zltmx Control logical terminal multiplexing Parameters Chapter 229 Zltqueue Zltqueue Logical data queue allocation Application number of terminal group Appln Appln Queue Returned Program Nmbr Label Queue No Chapter 233 Zltstore Zltstore Logical data storage allocation Terminal table, for the storage in the extension area 236 Zltup 238 Chapter 239 Zluopen Zcom error codes and their meanings This return parameter is undefined 242 Zmapr 244 Zname 246 Chapter 247 Zopen Ld1 Zap Zcom address node, ZLU number, and checksumNode contains the local node as defined in the Ttgen 250 Chapter 251 Zpeek Error codes and their meanings Zread3X, zluopen3X Zport Zcomzmuxportall ZcomzmuxportconfZcomzmuxportbaud Zcomzmuxportport No error Some terminals in this port not disabledIllegal port mode Break routine not installed Value Operating mode Value Parity selectClk Value Clock source 258 Value Port Mode ValueT1 ESF 260 Chapter 261 Zptup Chapter 263 Zqmve Chapter 265 Zqsze Zqhdp Return param 268 Zread Mode ZcREADWWAIT 0 Read with wait After the timeout period has elapsedThere is no message on the queue, error Zenodata Same ZLU. When a message arrives, only one Chapter 271 272 Chapter 273 274 Zrntimer 276 Chapter 277 Zsend Mhp-mid.ztagw2 Zsend 280 Chapter 281 282 Chapter 283 284 Chapter 285 286 Chapter 287 Zsetql Chapter 289 290 Zsetrcvr 292 Zsetrcvr 294 Ztimr 296 Chapter 297 298