url_csr_write_1
int url_csr_write_1(struct url_softc *, int, int);
url_csr_write_1(sc, reg, url_csr_read_1(sc, reg) | (x))
url_csr_write_1(sc, reg, url_csr_read_1(sc, reg) & ~(x))
url_csr_write_1(sc, reg, data);
url_csr_write_1(sc, URL_PHYADD, phy & URL_PHYADD_MASK);
url_csr_write_1(sc, URL_PHYCNT,
url_csr_write_1(sc, URL_PHYADD, phy);
url_csr_write_1(sc, URL_PHYCNT, reg | URL_PHYCNT_RWCR); /* Write */
url_csr_write_1(sc, URL_IDR0 + i, eaddr[i]);