The SMBus controller might be supported by
ichsmb(4), but I can't be sure... if it does work, it probably won't be of any use to you.. FreeBSD doesn't have a sensors framework AFAIK.
The other appears to be a Firewire controller, according to
firewire(4), you need to add
firewire_load="YES" to /etc/loader.conf.
Hope that helps.