Importance

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Abstract

A computer system includes a plurality of nodes, each having an associated unique identification and bus address, interconnected by point-to-point links. Device data records are maintained in a memory of the computer system wherein node unique identifications, which are bus reset invariant, are associated with corresponding node bus addresses, which are subject to change with bus resets. A driver associated with a source node initiates a bus transaction and specifies a reference identification for the destination node. The reference identification of the destination node is used to access the device data records to obtain the corresponding destination node bus address. When a bus transaction cannot be completed because a bus reset occurs, the device data records are updated to associate the new bus addresses of the nodes with the corresponding node unique identifications. The new destination node bus address is used to complete the bus transaction that was interrupted by the bus reset.

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First Claim