PIO_ADDR
#define PIO_ADDR(bgep, offset) ((void *)((caddr_t)(bgep)->io_regs+(offset)))
#define PIO_ADDR(ngep, offset) ((void *)((caddr_t)(ngep)->io_regs+(offset)))
#define PIO_ADDR(rgep, offset) ((void *)(rgep->io_regs+(offset)))