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Algorithm To Configure Valid RIO Drawers Topology And To Detect Invalid RIO Drawers Topology For RIO Hubs I/O Subsystem

IP.com Disclosure Number: IPCOM000016160D
Original Publication Date: 2002-Jul-12
Included in the Prior Art Database: 2003-Jun-21

Publishing Venue

IBM

Abstract

Algorithm To Configure Valid RIO Drawers Topology And To Detect Invalid RIO Drawers Topology For RIO Hubs I/O Subsystem Disclosed is an enhanced algorithm to configure valid I/O drawers topologies, and to detect invalid I/O drawers topologies for the Remote-IO (RIO) subsystem of the pSeries eServer machines. The enhance algorithm introduces an early probing pass before the normal probing pass. After the early probing pass is done, only valid I/O drawer topologies are found in the system. The normal configuration code uses the result of the early probing pass to configure the I/O drawers for normal operation. The algorithm is outlined below: For each RIO hub present in the system.