Method for efficient I/O controller processor interconnect coupling supporting push-pull DMA read operations

摘要

A system for I/O controller-processor interconnect coupling supporting a push-pull DMA read operation, in one aspect, may comprise a processor interconnect comprising a plurality of caches and memory subsystems and an I/O controller coupled with the processor interconnect. The I/O controller may comprise a plurality of DMA read request queues, a DMA read slot pool comprising a plurality of DMA read slots, and an expander logic determining a priority of requests in said request queues.