MCI_CONTROL
ddblwritel(link, MCI_CONTROL_RESET, MCI_CONTROL);
ddblwritel(link, 0, MCI_CONTROL + 4); /* 1= no internal init */
ddblwritel(link, 0, MCI_CONTROL);
status = ddblreadl(link, MCI_CONTROL);
val = ddblreadl(link, MCI_CONTROL);
ddblwritel(link, val, MCI_CONTROL);