E1000_EECD_REQ
eecd |= E1000_EECD_REQ;
eecd &= ~E1000_EECD_REQ;
eecd &= ~E1000_EECD_REQ;
eecd &= ~(E1000_EECD_REQ | E1000_EECD_GNT);
ew32(EECD, eecd | E1000_EECD_REQ);
eecd &= ~E1000_EECD_REQ;
eecd &= ~E1000_EECD_REQ;
wr32(E1000_EECD, eecd | E1000_EECD_REQ);
eecd &= ~E1000_EECD_REQ;
eecd &= ~E1000_EECD_REQ;