FreeBSD device drivers

[j4ck]

Hi,

I have started studying and working on writing device drivers for FreeBSD and I'm following this book FreeBSD Device Drivers and I have to say that this book is awesome but I have some questions.

Should I know about hardware specifications of that device or is programming knowledge enough? How should I get the necessary and needed information about the device?

 

[DutchDaemon]

You should get quite a wealth of information on the freebsd-drivers and the freebsd-hardware mailing lists. But in short: yes, hardware specifications should either be present, or you should be able to reverse-engineer them to some degree to make a successful driver. The lists can tell you all about it.