mfi_allocmem
sc->sc_pcq = mfi_allocmem(sc, (sizeof(uint32_t) * sc->sc_max_cmds) +
sc->sc_frames = mfi_allocmem(sc, sc->sc_frames_size * sc->sc_max_cmds);
sc->sc_sense = mfi_allocmem(sc, sc->sc_max_cmds * MFI_SENSE_SIZE);
struct mfi_mem *mfi_allocmem(struct mfi_softc *, size_t);