Design and implementation of FPGA data communication interface driver based on Linux

With regard to the application requirement of the Field Programmable Gate Array(FPGA)in embedded system,a data communication interface between the FPGA and ARM was designed and implemented.Based on the implementation of the FPGA device driver in the embedded Linux 2.6,the detailed discussion was given:the achievement of the operation of FPGA through the memory mapping mechanism and the improvement on the system efficiency through the blocking operation.Referring to the related data structures and functions of Linux2.6.15,a device driver was programmed and tested for the FPGA device.This FPGA interface driver,which had been applied and tested for a long time,ran steadily in the whole system.