SH4_PCIC_MEM_SIZE
#define SH4_PCIC_MEM_MASK (SH4_PCIC_MEM_SIZE-1)
sc->sc_membus_space.bus_size = SH4_PCIC_MEM_SIZE;
extent_free(mem_ex, SH4_PCIC_MEM, SH4_PCIC_MEM_SIZE, EX_NOWAIT);