How do I pass configuration parameters to a FreeBSD Device Driver ?

[David Somayajulu]

Hi All,
I would appreciate if you could let me know, how I can pass configuration parameters to a device driver, which can be processed during either probe() or attach() ? Is there a way to read them from a conf file of some sort ? Basically, I am interested in setting some tunable parameters during driver initialization, without needing to recompile the driver every time.

thanks
david Somayajulu