High-performance PCIe-AXI Bridge and/or scatter-gather DMA The Northwest Logic Expresso DMA Bridge Core from Rambus provides high-performance DMA and/or bridging between PCI Express and AXI for both Endpoint and Root Port applications. Key features include: DMA operation hard cores • Supports memory-mapped/streaming (FIFO) DMA operation • Can be configured with multiple DMA Channels which are independently controlled by software • Supports legacy, MSI, MSI-X and local AXI interrupts Using the core eliminates the need for the user to implement their own DMA and/or bridging design thus significantly reducing development time and risk. Linux Expresso DMA Drivers. The Expresso DMA Driver works