PORT_RINGBUS_CTRL
if (bus_space_read_4(sc->iot, sc->ioh, PORT_RINGBUS_CTRL)
bus_space_write_4(sc->iot, sc->ioh, PORT_RINGBUS_CTRL, 0);
PORT_RINGBUS_CTRL, RINGBUS_CTRL_AC97_SWRESET);
PORT_RINGBUS_CTRL, RINGBUS_CTRL_ACLINK_ENABLED);
PORT_RINGBUS_CTRL, 0);
PORT_RINGBUS_CTRL, RINGBUS_CTRL_ACLINK_ENABLED);
bus_space_write_4(sc->iot, sc->ioh, PORT_RINGBUS_CTRL, 0);
data = bus_space_read_4(sc->iot, sc->ioh, PORT_RINGBUS_CTRL);
bus_space_write_4(sc->iot, sc->ioh, PORT_RINGBUS_CTRL, data);
bus_space_write_4(sc->iot, sc->ioh, PORT_RINGBUS_CTRL,