myx_write
myx_write(sc, sc->sc_irqcoaloff, &r, sizeof(r));
void myx_write(struct myx_softc *, bus_size_t, void *, bus_size_t);
myx_write(sc, i + MYX_FW, fw + i, min(256, fwlen - i));
myx_write(sc, MYX_CMD, (u_int8_t *)mc, sizeof(struct myx_cmd));
myx_write(sc, MYX_BOOT, &bc, sizeof(bc));
myx_write(sc, MYX_RDMA, &rc, sizeof(rc));