Perhaps there is, but you'd better describe what you actually want to do. The model of interrupt handling in FreeBSD is much different from the one used in Linux - in Linux, the basic synchronisation primitive is the spinlock, and since spinning in interrupt would be fatal ("Aieee, killing interrupt handler"), one has to know the context to use correct routines - spin_lock/spin_unlock vs. spin_lock_irqsave/spin_unlock_irqrestore. FreeBSD, on the other hand, uses interrupt threads, which fixes this problem altogether - just use mtx_lock/mtx_unlock and ignore the context.
