80  * driver by setting ds->num_lag_ids. It is perfectly legal to leave
187 			if (dp->ds->index != sw_index)  in dsa_switch_find()
190 			return dp->ds;  in dsa_switch_find()
288 	struct dsa_switch *ds = dp->ds;  in dsa_link_touch()  local
292 	dst = ds->dst;  in dsa_link_touch()
313 	struct dsa_switch *ds = dp->ds;  in dsa_port_setup_routing_table()  local
314 	struct dsa_switch_tree *dst = ds->dst;  in dsa_port_setup_routing_table()
404 			if (dp->ds != cpu_dp->ds)  in dsa_tree_setup_cpu_ports()
432 	struct dsa_switch *ds = dp->ds;  in dsa_port_setup()  local
442 	if (ds->ops->port_setup) {  in dsa_port_setup()
443 		err = ds->ops->port_setup(ds, dp->index);  in dsa_port_setup()
491 		if (ds->ops->port_teardown)  in dsa_port_setup()
492 			ds->ops->port_teardown(ds, dp->index);  in dsa_port_setup()
504 	struct dsa_switch_tree *dst = dp->ds->dst;  in dsa_port_devlink_setup()
506 	struct devlink *dl = dp->ds->devlink;  in dsa_port_devlink_setup()
546 	struct dsa_switch *ds = dp->ds;  in dsa_port_teardown()  local
552 	if (ds->ops->port_teardown)  in dsa_port_teardown()
553 		ds->ops->port_teardown(ds, dp->index);  in dsa_port_teardown()
599  * flavour. At this point, any call to ds->ops->port_setup has been already
600  * balanced out by a call to ds->ops->port_teardown, so we know that any
602  * ds->ops->port_setup again, in order for the driver to re-create them on the
607 	struct dsa_switch *ds = dp->ds;  in dsa_port_reinit_as_unused()  local
616 	if (ds->ops->port_setup) {  in dsa_port_reinit_as_unused()
620 		err = ds->ops->port_setup(ds, dp->index);  in dsa_port_reinit_as_unused()
632 	struct dsa_switch *ds = dsa_devlink_to_ds(dl);  in dsa_devlink_info_get()  local
634 	if (ds->ops->devlink_info_get)  in dsa_devlink_info_get()
635 		return ds->ops->devlink_info_get(ds, req, extack);  in dsa_devlink_info_get()
644 	struct dsa_switch *ds = dsa_devlink_to_ds(dl);  in dsa_devlink_sb_pool_get()  local
646 	if (!ds->ops->devlink_sb_pool_get)  in dsa_devlink_sb_pool_get()
649 	return ds->ops->devlink_sb_pool_get(ds, sb_index, pool_index,  in dsa_devlink_sb_pool_get()
658 	struct dsa_switch *ds = dsa_devlink_to_ds(dl);  in dsa_devlink_sb_pool_set()  local
660 	if (!ds->ops->devlink_sb_pool_set)  in dsa_devlink_sb_pool_set()
663 	return ds->ops->devlink_sb_pool_set(ds, sb_index, pool_index, size,  in dsa_devlink_sb_pool_set()
671 	struct dsa_switch *ds = dsa_devlink_port_to_ds(dlp);  in dsa_devlink_sb_port_pool_get()  local
674 	if (!ds->ops->devlink_sb_port_pool_get)  in dsa_devlink_sb_port_pool_get()
677 	return ds->ops->devlink_sb_port_pool_get(ds, port, sb_index,  in dsa_devlink_sb_port_pool_get()
686 	struct dsa_switch *ds = dsa_devlink_port_to_ds(dlp);  in dsa_devlink_sb_port_pool_set()  local
689 	if (!ds->ops->devlink_sb_port_pool_set)  in dsa_devlink_sb_port_pool_set()
692 	return ds->ops->devlink_sb_port_pool_set(ds, port, sb_index,  in dsa_devlink_sb_port_pool_set()
702 	struct dsa_switch *ds = dsa_devlink_port_to_ds(dlp);  in dsa_devlink_sb_tc_pool_bind_get()  local
705 	if (!ds->ops->devlink_sb_tc_pool_bind_get)  in dsa_devlink_sb_tc_pool_bind_get()
708 	return ds->ops->devlink_sb_tc_pool_bind_get(ds, port, sb_index,  in dsa_devlink_sb_tc_pool_bind_get()
720 	struct dsa_switch *ds = dsa_devlink_port_to_ds(dlp);  in dsa_devlink_sb_tc_pool_bind_set()  local
723 	if (!ds->ops->devlink_sb_tc_pool_bind_set)  in dsa_devlink_sb_tc_pool_bind_set()
726 	return ds->ops->devlink_sb_tc_pool_bind_set(ds, port, sb_index,  in dsa_devlink_sb_tc_pool_bind_set()
735 	struct dsa_switch *ds = dsa_devlink_to_ds(dl);  in dsa_devlink_sb_occ_snapshot()  local
737 	if (!ds->ops->devlink_sb_occ_snapshot)  in dsa_devlink_sb_occ_snapshot()
740 	return ds->ops->devlink_sb_occ_snapshot(ds, sb_index);  in dsa_devlink_sb_occ_snapshot()
746 	struct dsa_switch *ds = dsa_devlink_to_ds(dl);  in dsa_devlink_sb_occ_max_clear()  local
748 	if (!ds->ops->devlink_sb_occ_max_clear)  in dsa_devlink_sb_occ_max_clear()
751 	return ds->ops->devlink_sb_occ_max_clear(ds, sb_index);  in dsa_devlink_sb_occ_max_clear()
759 	struct dsa_switch *ds = dsa_devlink_port_to_ds(dlp);  in dsa_devlink_sb_occ_port_pool_get()  local
762 	if (!ds->ops->devlink_sb_occ_port_pool_get)  in dsa_devlink_sb_occ_port_pool_get()
765 	return ds->ops->devlink_sb_occ_port_pool_get(ds, port, sb_index,  in dsa_devlink_sb_occ_port_pool_get()
775 	struct dsa_switch *ds = dsa_devlink_port_to_ds(dlp);  in dsa_devlink_sb_occ_tc_port_bind_get()  local
778 	if (!ds->ops->devlink_sb_occ_tc_port_bind_get)  in dsa_devlink_sb_occ_tc_port_bind_get()
781 	return ds->ops->devlink_sb_occ_tc_port_bind_get(ds, port,  in dsa_devlink_sb_occ_tc_port_bind_get()
801 static int dsa_switch_setup_tag_protocol(struct dsa_switch *ds)  in dsa_switch_setup_tag_protocol()  argument
803 	const struct dsa_device_ops *tag_ops = ds->dst->tag_ops;  in dsa_switch_setup_tag_protocol()
804 	struct dsa_switch_tree *dst = ds->dst;  in dsa_switch_setup_tag_protocol()
810 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_setup_tag_protocol()
811 		if (!dsa_is_cpu_port(ds, port))  in dsa_switch_setup_tag_protocol()
815 		err = ds->ops->change_tag_protocol(ds, port, tag_ops->proto);  in dsa_switch_setup_tag_protocol()
818 			dev_err(ds->dev, "Unable to use tag protocol \"%s\": %pe\n",  in dsa_switch_setup_tag_protocol()
827 static int dsa_switch_setup(struct dsa_switch *ds)  in dsa_switch_setup()  argument
833 	if (ds->setup)  in dsa_switch_setup()
836 	/* Initialize ds->phys_mii_mask before registering the slave MDIO bus  in dsa_switch_setup()
841 	ds->phys_mii_mask |= dsa_user_ports(ds);  in dsa_switch_setup()
846 	ds->devlink =  in dsa_switch_setup()
847 		devlink_alloc(&dsa_devlink_ops, sizeof(*dl_priv), ds->dev);  in dsa_switch_setup()
848 	if (!ds->devlink)  in dsa_switch_setup()
850 	dl_priv = devlink_priv(ds->devlink);  in dsa_switch_setup()
851 	dl_priv->ds = ds;  in dsa_switch_setup()
853 	err = devlink_register(ds->devlink);  in dsa_switch_setup()
860 	list_for_each_entry(dp, &ds->dst->ports, list) {  in dsa_switch_setup()
861 		if (dp->ds == ds) {  in dsa_switch_setup()
868 	err = dsa_switch_register_notifier(ds);  in dsa_switch_setup()
872 	ds->configure_vlan_while_not_filtering = true;  in dsa_switch_setup()
874 	err = ds->ops->setup(ds);  in dsa_switch_setup()
878 	err = dsa_switch_setup_tag_protocol(ds);  in dsa_switch_setup()
882 	devlink_params_publish(ds->devlink);  in dsa_switch_setup()
884 	if (!ds->slave_mii_bus && ds->ops->phy_read) {  in dsa_switch_setup()
885 		ds->slave_mii_bus = mdiobus_alloc();  in dsa_switch_setup()
886 		if (!ds->slave_mii_bus) {  in dsa_switch_setup()
891 		dsa_slave_mii_bus_init(ds);  in dsa_switch_setup()
893 		err = mdiobus_register(ds->slave_mii_bus);  in dsa_switch_setup()
898 	ds->setup = true;  in dsa_switch_setup()
903 	if (ds->slave_mii_bus && ds->ops->phy_read)  in dsa_switch_setup()
904 		mdiobus_free(ds->slave_mii_bus);  in dsa_switch_setup()
906 	if (ds->ops->teardown)  in dsa_switch_setup()
907 		ds->ops->teardown(ds);  in dsa_switch_setup()
909 	dsa_switch_unregister_notifier(ds);  in dsa_switch_setup()
911 	list_for_each_entry(dp, &ds->dst->ports, list)  in dsa_switch_setup()
912 		if (dp->ds == ds)  in dsa_switch_setup()
914 	devlink_unregister(ds->devlink);  in dsa_switch_setup()
916 	devlink_free(ds->devlink);  in dsa_switch_setup()
917 	ds->devlink = NULL;  in dsa_switch_setup()
922 static void dsa_switch_teardown(struct dsa_switch *ds)  in dsa_switch_teardown()  argument
926 	if (!ds->setup)  in dsa_switch_teardown()
929 	if (ds->slave_mii_bus && ds->ops->phy_read) {  in dsa_switch_teardown()
930 		mdiobus_unregister(ds->slave_mii_bus);  in dsa_switch_teardown()
931 		mdiobus_free(ds->slave_mii_bus);  in dsa_switch_teardown()
932 		ds->slave_mii_bus = NULL;  in dsa_switch_teardown()
935 	dsa_switch_unregister_notifier(ds);  in dsa_switch_teardown()
937 	if (ds->ops->teardown)  in dsa_switch_teardown()
938 		ds->ops->teardown(ds);  in dsa_switch_teardown()
940 	if (ds->devlink) {  in dsa_switch_teardown()
941 		list_for_each_entry(dp, &ds->dst->ports, list)  in dsa_switch_teardown()
942 			if (dp->ds == ds)  in dsa_switch_teardown()
944 		devlink_unregister(ds->devlink);  in dsa_switch_teardown()
945 		devlink_free(ds->devlink);  in dsa_switch_teardown()
946 		ds->devlink = NULL;  in dsa_switch_teardown()
949 	ds->setup = false;  in dsa_switch_teardown()
976 		dsa_switch_teardown(dp->ds);  in dsa_tree_teardown_switches()
985 		err = dsa_switch_setup(dp->ds);  in dsa_tree_setup_switches()
1040 		if (dp->ds->num_lag_ids > len)  in dsa_tree_setup_lags()
1041 			len = dp->ds->num_lag_ids;  in dsa_tree_setup_lags()
1160 		if (!dsa_is_user_port(dp->ds, dp->index))  in dsa_tree_change_tag_proto()
1186 static struct dsa_port *dsa_port_touch(struct dsa_switch *ds, int index)  in dsa_port_touch()  argument
1188 	struct dsa_switch_tree *dst = ds->dst;  in dsa_port_touch()
1192 		if (dp->ds == ds && dp->index == index)  in dsa_port_touch()
1199 	dp->ds = ds;  in dsa_port_touch()
1231 	struct dsa_switch *mds, *ds = dp->ds;  in dsa_get_tag_protocol()  local
1241 		mds = mdp->ds;  in dsa_get_tag_protocol()
1250 	return ds->ops->get_tag_protocol(ds, dp->index, tag_protocol);  in dsa_get_tag_protocol()
1256 	struct dsa_switch *ds = dp->ds;  in dsa_port_parse_cpu()  local
1257 	struct dsa_switch_tree *dst = ds->dst;  in dsa_port_parse_cpu()
1265 			dev_err(ds->dev,  in dsa_port_parse_cpu()
1275 		if (!ds->ops->change_tag_protocol) {  in dsa_port_parse_cpu()
1276 			dev_err(ds->dev, "Tag protocol cannot be modified\n");  in dsa_port_parse_cpu()
1289 		dev_warn(ds->dev, "No tagger for this switch\n");  in dsa_port_parse_cpu()
1295 			dev_err(ds->dev,  in dsa_port_parse_cpu()
1357 static int dsa_switch_parse_ports_of(struct dsa_switch *ds,  in dsa_switch_parse_ports_of()  argument
1370 			dev_err(ds->dev, "no ports child node found\n");  in dsa_switch_parse_ports_of()
1382 		if (reg >= ds->num_ports) {  in dsa_switch_parse_ports_of()
1383 			dev_err(ds->dev, "port %pOF index %u exceeds num_ports (%zu)\n",  in dsa_switch_parse_ports_of()
1384 				port, reg, ds->num_ports);  in dsa_switch_parse_ports_of()
1390 		dp = dsa_to_port(ds, reg);  in dsa_switch_parse_ports_of()
1404 static int dsa_switch_parse_member_of(struct dsa_switch *ds,  in dsa_switch_parse_member_of()  argument
1415 	ds->index = m[1];  in dsa_switch_parse_member_of()
1417 	ds->dst = dsa_tree_touch(m[0]);  in dsa_switch_parse_member_of()
1418 	if (!ds->dst)  in dsa_switch_parse_member_of()
1421 	if (dsa_switch_find(ds->dst->index, ds->index)) {  in dsa_switch_parse_member_of()
1422 		dev_err(ds->dev,  in dsa_switch_parse_member_of()
1424 			ds->index, ds->dst->index);  in dsa_switch_parse_member_of()
1428 	if (ds->dst->last_switch < ds->index)  in dsa_switch_parse_member_of()
1429 		ds->dst->last_switch = ds->index;  in dsa_switch_parse_member_of()
1434 static int dsa_switch_touch_ports(struct dsa_switch *ds)  in dsa_switch_touch_ports()  argument
1439 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_touch_ports()
1440 		dp = dsa_port_touch(ds, port);  in dsa_switch_touch_ports()
1448 static int dsa_switch_parse_of(struct dsa_switch *ds, struct device_node *dn)  in dsa_switch_parse_of()  argument
1452 	err = dsa_switch_parse_member_of(ds, dn);  in dsa_switch_parse_of()
1456 	err = dsa_switch_touch_ports(ds);  in dsa_switch_parse_of()
1460 	return dsa_switch_parse_ports_of(ds, dn);  in dsa_switch_parse_of()
1484 static int dsa_switch_parse_ports(struct dsa_switch *ds,  in dsa_switch_parse_ports()  argument
1497 		dp = dsa_to_port(ds, i);  in dsa_switch_parse_ports()
1515 static int dsa_switch_parse(struct dsa_switch *ds, struct dsa_chip_data *cd)  in dsa_switch_parse()  argument
1519 	ds->cd = cd;  in dsa_switch_parse()
1524 	ds->index = 0;  in dsa_switch_parse()
1525 	ds->dst = dsa_tree_touch(0);  in dsa_switch_parse()
1526 	if (!ds->dst)  in dsa_switch_parse()
1529 	err = dsa_switch_touch_ports(ds);  in dsa_switch_parse()
1533 	return dsa_switch_parse_ports(ds, cd);  in dsa_switch_parse()
1536 static void dsa_switch_release_ports(struct dsa_switch *ds)  in dsa_switch_release_ports()  argument
1538 	struct dsa_switch_tree *dst = ds->dst;  in dsa_switch_release_ports()
1542 		if (dp->ds != ds)  in dsa_switch_release_ports()
1549 static int dsa_switch_probe(struct dsa_switch *ds)  in dsa_switch_probe()  argument
1556 	if (!ds->dev)  in dsa_switch_probe()
1559 	pdata = ds->dev->platform_data;  in dsa_switch_probe()
1560 	np = ds->dev->of_node;  in dsa_switch_probe()
1562 	if (!ds->num_ports)  in dsa_switch_probe()
1566 		err = dsa_switch_parse_of(ds, np);  in dsa_switch_probe()
1568 			dsa_switch_release_ports(ds);  in dsa_switch_probe()
1570 		err = dsa_switch_parse(ds, pdata);  in dsa_switch_probe()
1572 			dsa_switch_release_ports(ds);  in dsa_switch_probe()
1580 	dst = ds->dst;  in dsa_switch_probe()
1584 		dsa_switch_release_ports(ds);  in dsa_switch_probe()
1591 int dsa_register_switch(struct dsa_switch *ds)  in dsa_register_switch()  argument
1596 	err = dsa_switch_probe(ds);  in dsa_register_switch()
1597 	dsa_tree_put(ds->dst);  in dsa_register_switch()
1604 static void dsa_switch_remove(struct dsa_switch *ds)  in dsa_switch_remove()  argument
1606 	struct dsa_switch_tree *dst = ds->dst;  in dsa_switch_remove()
1609 	dsa_switch_release_ports(ds);  in dsa_switch_remove()
1613 void dsa_unregister_switch(struct dsa_switch *ds)  in dsa_unregister_switch()  argument
1616 	dsa_switch_remove(ds);  in dsa_unregister_switch()
1626 void dsa_switch_shutdown(struct dsa_switch *ds)  in dsa_switch_shutdown()  argument
1635 	list_for_each_entry(dp, &ds->dst->ports, list) {  in dsa_switch_shutdown()
1636 		if (dp->ds != ds)  in dsa_switch_shutdown()