RadiSys ATCA-4616 Dokumentacja Pobierz pdf (Strona 58)

Changing Shelf Settings Using HPI

TorunanyHPIapplicationthatlinkswiththeRadisysHPIclientlibrary,libhcl.so,considerthe

following:

•TheSaHpi.hheaderfileandtheHCLsupportHPIB.03.02andarebackwardcompatible

withHPIB.02.01andHPIB.01.01.RadisysrecommendsrecompilingyourHPIapplications

withthenewheaderfile.

•Ensurethe

run‐timeenvironmentisproperlysetupsothatapplicationscanfindtheHPI

clientlibrary.Dothisbycompletingeitherofthefollowingtasks:

•BuildandinstalltheHPIclientlibrary,libhcl.so,andnotetheinstallationlocation.Build

instructionsareprovidedintheHPIclientlibraryandapplicationpackageincludedon

theRadisysFTPsite.

•SettheLD_LIBRARY_PATHenvironmentvariabletothelocationofthelibhcl.so.

YoumustconverttheIPv4addresstoabinaryformatbecausetheDomainIdisdefinedas

a32‐bitunsignedintegerandwouldnotbeabletoacceptanASCII‐formattedIPv4

address.HPIapplicationscanusetheLinuxlibraryfunctioninet_addr()toconvertthe

IPv4‐basedShelfManagerAddresstoabinaryformat.

•ToopensessionstoaremoteHPIserverusingthedefaultDomainId

SAHPI_UNSPECIFIED_DOMAIN_ID,settheenvironmentvariable

SAHPI_UNSPECIFIED_DOMAIN_IDtotheIPaddressoftheShelfManager.Thisshould

normallybethededicatedShelfManagerIPaddressthatisboundtotheactiveShelf

Manager.Forexample,thefollowingBourneshellcommandcreat esandexportsthe

environmentvariableSAHPI_UNSPECIFIED_DOMAIN_IDtotheShelfManagerIPaddress

XX.XX.XX.XX

exportSAHPI_UNSPECIFIED_DOMAIN_ID=XX.XX.XX.XX

TheHCLsearchesforthisenvironmentvariablewhenarequesttoopenasessionusing

thedefaultdomainidentifierisreceived.Ifthisvariableisnotset,theHCLwilluse

127.0.0.1todeducetheDomainId.

IfnoHPIserverrespondsatthespecifiedIPaddress,saHpiSessionOpen()willreturnthe

error

code:SA_ERR_HPI_INVALID_DOMAIN.

•WhenrunningtheHPIapplicationremotely,itmightbenecessarytosetupanewroute

fortheShelfManager’sIPaddresssothatcommunicationcanbeestablishedbetweenthe 

remotemachinehostingtheHPIapplicationandtheHPIserver.

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RadiSys ATCA-4616 Dokumentacja Strona 58