Differential D31831 Diff 94679 sys/dev/twe/twe_freebsd.c

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sys/dev/twe/twe_freebsd.c

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	* This is called from twe_add_unit.			* This is called from twe_add_unit.
	*/			*/
	int			int
	twe_attach_drive(struct twe_softc sc, struct twe_drive dr)			twe_attach_drive(struct twe_softc sc, struct twe_drive dr)
	{			{
	char buf[80];			char buf[80];
	int error;			int error;

	mtx_lock(&Giant);			bus_topo_lock();
	dr->td_disk = device_add_child(sc->twe_dev, NULL, -1);			dr->td_disk = device_add_child(sc->twe_dev, NULL, -1);
	if (dr->td_disk == NULL) {			if (dr->td_disk == NULL) {
	mtx_unlock(&Giant);			bus_topo_unlock();
	twe_printf(sc, "Cannot add unit\n");			twe_printf(sc, "Cannot add unit\n");
	return (EIO);			return (EIO);
	}			}
	device_set_ivars(dr->td_disk, dr);			device_set_ivars(dr->td_disk, dr);

	/*			/*
	* XXX It would make sense to test the online/initialising bits, but they seem to be			* XXX It would make sense to test the online/initialising bits, but they seem to be
	* always set...			* always set...
	*/			*/
	sprintf(buf, "Unit %d, %s, %s",			sprintf(buf, "Unit %d, %s, %s",
	dr->td_twe_unit,			dr->td_twe_unit,
	twe_describe_code(twe_table_unittype, dr->td_type),			twe_describe_code(twe_table_unittype, dr->td_type),
	twe_describe_code(twe_table_unitstate, dr->td_state & TWE_PARAM_UNITSTATUS_MASK));			twe_describe_code(twe_table_unitstate, dr->td_state & TWE_PARAM_UNITSTATUS_MASK));
	device_set_desc_copy(dr->td_disk, buf);			device_set_desc_copy(dr->td_disk, buf);

	error = device_probe_and_attach(dr->td_disk);			error = device_probe_and_attach(dr->td_disk);
	mtx_unlock(&Giant);			bus_topo_unlock();
	if (error != 0) {			if (error != 0) {
	twe_printf(sc, "Cannot attach unit to controller. error = %d\n", error);			twe_printf(sc, "Cannot attach unit to controller. error = %d\n", error);
	return (EIO);			return (EIO);
	}			}
	return (0);			return (0);
	}			}

	/********************************************************************************			/********************************************************************************
	* Detach the specified unit if it exsists			* Detach the specified unit if it exsists
	*			*
	* This is called from twe_del_unit.			* This is called from twe_del_unit.
	*/			*/
	int			int
	twe_detach_drive(struct twe_softc *sc, int unit)			twe_detach_drive(struct twe_softc *sc, int unit)
	{			{
	int error = 0;			int error = 0;

	TWE_CONFIG_ASSERT_LOCKED(sc);			TWE_CONFIG_ASSERT_LOCKED(sc);
	mtx_lock(&Giant);			bus_topo_lock();
	error = device_delete_child(sc->twe_dev, sc->twe_drive[unit].td_disk);			error = device_delete_child(sc->twe_dev, sc->twe_drive[unit].td_disk);
	mtx_unlock(&Giant);			bus_topo_unlock();
	if (error != 0) {			if (error != 0) {
	twe_printf(sc, "failed to delete unit %d\n", unit);			twe_printf(sc, "failed to delete unit %d\n", unit);
	return(error);			return(error);
	}			}
	bzero(&sc->twe_drive[unit], sizeof(sc->twe_drive[unit]));			bzero(&sc->twe_drive[unit], sizeof(sc->twe_drive[unit]));
	return(error);			return(error);
	}			}

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