E-Books →FreeBSD Device Drivers A Guide for the Intrepid

You'll learn:
-All about Newbus, the infrastructure used by FreeBSD to manage the hardware devices on your system
-How to work with ISA, PCI, USB, and other buses
-The best ways to control and communicate with the hardware devices from user space
-How to use Direct Memory Access (DMA) for maximum system performance
-The inner workings of the virtual null modem terminal driver, the USB printer driver, the Intel PCI Gigabit Ethernet adapter driver, and other important drivers
-How to use Common Access Method (CAM) to manage host bus adapters (HBAs)
Concise descriptions and extensive annotations walk you through the many code examples. Don't waste time searching man pages or digging through the kernel sources to figure out how to make that arcane bit of hardware work with your system. FreeBSD Device Drivers gives you the framework that you need to write any driver you want, now.