Constantine Murenin has added wbsio(4) to DragonFly. It’s the ISA-attached version of the lm(4) sensor, if I remember correctly.
Actually, it’s simply a more automatic ISA attachment of lm(4) on Winbond Super I/O, e.g. if your system uses non-standard ports for lm(4), then wbsio(4) will automatically discover any such port, and will attach lm(4) on ports other than the default 0x290.
So if lm(4) didn’t attach for you before on DragonFly, or you had to edit GENERIC to manually specify a custom non-0x290 ISA port, then wbsio(4) is going to solve any such problem in an automatic and transparent way.
DragonFly BSD Digest