mfi_ioc_passthru
struct mfi_ioc_passthru *);
mfi_user_command(struct mfi_softc *sc, struct mfi_ioc_passthru *ioc)
struct mfi_ioc_passthru *iop = (struct mfi_ioc_passthru *)arg;
#define MFIIO_PASSTHRU _IOWR('C', 102, struct mfi_ioc_passthru)
struct mfi_ioc_passthru ioc;