This depends on whether or not you plan on making the driver
publicly available. If you do, then please send us a copy of the
driver source code, plus the appropriate modifications to
files.i386, a sample configuration file entry, and the
appropriate MAKEDEV code to create any special files your device uses. If
you do not, or are unable to because of licensing restrictions, then
character major number 32 and block major number 8 have been reserved
specifically for this purpose; please use them. In any case, we'd
appreciate hearing about your driver on
<freebsd-hackers@FreeBSD.ORG>.