A data processing device is provided. The data processing device includes a first port configured to receive data from a first bus, and a direct memory access (DMA) engine coupled to the first port. The DMA engine is configured to receive the data from the first bus, receive a contiguous scatter-gather list from a processing device via a second port, configure the data according to the contiguous scatter-gather list, and provide the configured data to the processing device through the second port. The second port is configured to write the configured data to the processing device over a second bus.