GMAC_CTRL
CSR_WRITE_4(dev, MR_ADDR(pnum, GMAC_CTRL), GMC_RST_SET);
CSR_WRITE_4(dev, MR_ADDR(pnum, GMAC_CTRL), GMC_RST_CLR);
CSR_WRITE_4(dev, MR_ADDR(pnum, GMAC_CTRL), GMC_F_LOOPB_OFF);
CSR_WRITE_4(dev, MR_ADDR(pnum, GMAC_CTRL),
CSR_WRITE_4(dev, MR_ADDR(pnum, GMAC_CTRL), GMC_PAUSE_OFF);
CSR_WRITE_4(dev, MR_ADDR(port->p_port, GMAC_CTRL), gmac);
CSR_WRITE_4(dev, MR_ADDR(i, GMAC_CTRL), GMC_RST_SET);
CSR_WRITE_4(dev, MR_ADDR(i, GMAC_CTRL), GMC_RST_CLR);
CSR_WRITE_2(dev, MR_ADDR(i, GMAC_CTRL),
CSR_WRITE_2(dev, MR_ADDR(i, GMAC_CTRL), GMC_F_LOOPB_OFF);