A DRIVER DEVELOPMENT FOR PCI EXPRESS 3.0 IN OPEN POWER ARCHITECTURE

Peripheral Component Interconnect express (PCIe) is a high speed serial data bus standard. Every computer motherboard has a number of PCIe slots used to add RAM, GPUs, Wi-Fi cards or SSD (solid-state drive) add-on cards. PCI Express is a serial connection that works more as a network than as a bus. Instead of one bus handling data from various sources, it includes a switch controlling various point-to-point serial connections. Such connections will spread outward from the switch leading to the devices where the data is required to go. Devices no longer share bandwidth as they do on a conventional bus. Many different versions of PCIe are developed in order to increase speed, bandwidth and data width. Device drivers are software applications that connect software programming to hardware devices. As part of a huge operating system, device drivers are thought to be particularly challenging to achieve. C as well as other low-level programming languages are regularly used to generate them. Device driver developers must have a detailed understanding of the hardware and software system they are working with. C code will be compiled to binary which will be transmitted into the processor to conduct operations with the specified module. This project goal is to design and develop a driver for PCI Express which is connected to A20 core through AMBA AX14 bus interface. The GCC compiler will be used for design and development of drivers. Drivers will be written in C programming language.