US Patent 7970977 Deadlock-resistant bus bridge with pipeline-restricted address ranges

A method of bridging a plurality of buses within a bus bridge can include determining whether a queue of the bus bridge includes a transaction request directed to a restricted address range and, for each received transaction request, determining whether an address to which the transaction request is directed is within the restricted address range. Each transaction request received by the bus bridge can be selectively rejected according to whether the address to which the transaction request is directed is within the restricted address range and whether the queue includes a transaction request directed to the restricted address range.