A core part of the Unix system is the drivers that interact with the hardware that we run on. Drivers are needed as new hardware and technology becomes available on the market. FreeBSD has a rich set of constructs that makes writing a device driver easy. This includes making the module loadable and handling configuration via sysctl's and tunables.

The presentation will be on how to write a device driver for FreeBSD. This will cover things like presenting a character device which you can read/write/mmap/select/kqueue upon along with properly using bus_dma for cards that can DMA. It will focus on PCI as the primary attachment, but will cover other device attachments such as I2C.

speaker: John-Mark Gurney

location: SITE B0138