1 files changed, 30 insertions, 765 deletions

diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index b6d4f6a..26130ae 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -14,15 +14,17 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <net/dsa.h>
 #include <linux/of.h>
 #include <linux/of_mdio.h>
 #include <linux/of_platform.h>
 #include <linux/of_net.h>
 #include <linux/of_gpio.h>
+#include <linux/netdevice.h>
 #include <linux/sysfs.h>
 #include <linux/phy_fixed.h>
 #include <linux/gpio/consumer.h>
+#include <linux/etherdevice.h>
+#include <net/dsa.h>
 #include "dsa_priv.h"
 
 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
@@ -53,62 +55,15 @@ const struct dsa_device_ops *dsa_device_ops[DSA_TAG_LAST] = {
 #ifdef CONFIG_NET_DSA_TAG_QCA
 	[DSA_TAG_PROTO_QCA] = &qca_netdev_ops,
 #endif
+#ifdef CONFIG_NET_DSA_TAG_MTK
+	[DSA_TAG_PROTO_MTK] = &mtk_netdev_ops,
+#endif
+#ifdef CONFIG_NET_DSA_TAG_LAN9303
+	[DSA_TAG_PROTO_LAN9303] = &lan9303_netdev_ops,
+#endif
 	[DSA_TAG_PROTO_NONE] = &none_ops,
 };
 
-/* switch driver registration ***********************************************/
-static DEFINE_MUTEX(dsa_switch_drivers_mutex);
-static LIST_HEAD(dsa_switch_drivers);
-
-void register_switch_driver(struct dsa_switch_driver *drv)
-{
-	mutex_lock(&dsa_switch_drivers_mutex);
-	list_add_tail(&drv->list, &dsa_switch_drivers);
-	mutex_unlock(&dsa_switch_drivers_mutex);
-}
-EXPORT_SYMBOL_GPL(register_switch_driver);
-
-void unregister_switch_driver(struct dsa_switch_driver *drv)
-{
-	mutex_lock(&dsa_switch_drivers_mutex);
-	list_del_init(&drv->list);
-	mutex_unlock(&dsa_switch_drivers_mutex);
-}
-EXPORT_SYMBOL_GPL(unregister_switch_driver);
-
-static const struct dsa_switch_ops *
-dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr,
-		 const char **_name, void **priv)
-{
-	const struct dsa_switch_ops *ret;
-	struct list_head *list;
-	const char *name;
-
-	ret = NULL;
-	name = NULL;
-
-	mutex_lock(&dsa_switch_drivers_mutex);
-	list_for_each(list, &dsa_switch_drivers) {
-		const struct dsa_switch_ops *ops;
-		struct dsa_switch_driver *drv;
-
-		drv = list_entry(list, struct dsa_switch_driver, list);
-		ops = drv->ops;
-
-		name = ops->probe(parent, host_dev, sw_addr, priv);
-		if (name != NULL) {
-			ret = ops;
-			break;
-		}
-	}
-	mutex_unlock(&dsa_switch_drivers_mutex);
-
-	*_name = name;
-
-	return ret;
-}
-
-/* basic switch operations **************************************************/
 int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
 		      struct dsa_port *dport, int port)
 {
@@ -140,23 +95,6 @@ int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
 	return 0;
 }
 
-static int dsa_cpu_dsa_setups(struct dsa_switch *ds, struct device *dev)
-{
-	struct dsa_port *dport;
-	int ret, port;
-
-	for (port = 0; port < ds->num_ports; port++) {
-		if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
-			continue;
-
-		dport = &ds->ports[port];
-		ret = dsa_cpu_dsa_setup(ds, dev, dport, port);
-		if (ret)
-			return ret;
-	}
-	return 0;
-}
-
 const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol)
 {
 	const struct dsa_device_ops *ops;
@@ -206,168 +144,6 @@ void dsa_cpu_port_ethtool_restore(struct dsa_switch *ds)
 	master->ethtool_ops = ds->dst->master_orig_ethtool_ops;
 }
 
-static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
-{
-	const struct dsa_switch_ops *ops = ds->ops;
-	struct dsa_switch_tree *dst = ds->dst;
-	struct dsa_chip_data *cd = ds->cd;
-	bool valid_name_found = false;
-	int index = ds->index;
-	int i, ret;
-
-	/*
-	 * Validate supplied switch configuration.
-	 */
-	for (i = 0; i < ds->num_ports; i++) {
-		char *name;
-
-		name = cd->port_names[i];
-		if (name == NULL)
-			continue;
-
-		if (!strcmp(name, "cpu")) {
-			if (dst->cpu_switch) {
-				netdev_err(dst->master_netdev,
-					   "multiple cpu ports?!\n");
-				return -EINVAL;
-			}
-			dst->cpu_switch = ds;
-			dst->cpu_port = i;
-			ds->cpu_port_mask |= 1 << i;
-		} else if (!strcmp(name, "dsa")) {
-			ds->dsa_port_mask |= 1 << i;
-		} else {
-			ds->enabled_port_mask |= 1 << i;
-		}
-		valid_name_found = true;
-	}
-
-	if (!valid_name_found && i == ds->num_ports)
-		return -EINVAL;
-
-	/* Make the built-in MII bus mask match the number of ports,
-	 * switch drivers can override this later
-	 */
-	ds->phys_mii_mask = ds->enabled_port_mask;
-
-	/*
-	 * If the CPU connects to this switch, set the switch tree
-	 * tagging protocol to the preferred tagging format of this
-	 * switch.
-	 */
-	if (dst->cpu_switch == ds) {
-		enum dsa_tag_protocol tag_protocol;
-
-		tag_protocol = ops->get_tag_protocol(ds);
-		dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
-		if (IS_ERR(dst->tag_ops))
-			return PTR_ERR(dst->tag_ops);
-
-		dst->rcv = dst->tag_ops->rcv;
-	}
-
-	memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable));
-
-	/*
-	 * Do basic register setup.
-	 */
-	ret = ops->setup(ds);
-	if (ret < 0)
-		return ret;
-
-	ret = dsa_switch_register_notifier(ds);
-	if (ret)
-		return ret;
-
-	if (ops->set_addr) {
-		ret = ops->set_addr(ds, dst->master_netdev->dev_addr);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (!ds->slave_mii_bus && ops->phy_read) {
-		ds->slave_mii_bus = devm_mdiobus_alloc(parent);
-		if (!ds->slave_mii_bus)
-			return -ENOMEM;
-		dsa_slave_mii_bus_init(ds);
-
-		ret = mdiobus_register(ds->slave_mii_bus);
-		if (ret < 0)
-			return ret;
-	}
-
-	/*
-	 * Create network devices for physical switch ports.
-	 */
-	for (i = 0; i < ds->num_ports; i++) {
-		ds->ports[i].dn = cd->port_dn[i];
-
-		if (!(ds->enabled_port_mask & (1 << i)))
-			continue;
-
-		ret = dsa_slave_create(ds, parent, i, cd->port_names[i]);
-		if (ret < 0)
-			netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s): %d\n",
-				   index, i, cd->port_names[i], ret);
-	}
-
-	/* Perform configuration of the CPU and DSA ports */
-	ret = dsa_cpu_dsa_setups(ds, parent);
-	if (ret < 0)
-		netdev_err(dst->master_netdev, "[%d] : can't configure CPU and DSA ports\n",
-			   index);
-
-	ret = dsa_cpu_port_ethtool_setup(ds);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-static struct dsa_switch *
-dsa_switch_setup(struct dsa_switch_tree *dst, int index,
-		 struct device *parent, struct device *host_dev)
-{
-	struct dsa_chip_data *cd = dst->pd->chip + index;
-	const struct dsa_switch_ops *ops;
-	struct dsa_switch *ds;
-	int ret;
-	const char *name;
-	void *priv;
-
-	/*
-	 * Probe for switch model.
-	 */
-	ops = dsa_switch_probe(parent, host_dev, cd->sw_addr, &name, &priv);
-	if (!ops) {
-		netdev_err(dst->master_netdev, "[%d]: could not detect attached switch\n",
-			   index);
-		return ERR_PTR(-EINVAL);
-	}
-	netdev_info(dst->master_netdev, "[%d]: detected a %s switch\n",
-		    index, name);
-
-
-	/*
-	 * Allocate and initialise switch state.
-	 */
-	ds = dsa_switch_alloc(parent, DSA_MAX_PORTS);
-	if (!ds)
-		return ERR_PTR(-ENOMEM);
-
-	ds->dst = dst;
-	ds->index = index;
-	ds->cd = cd;
-	ds->ops = ops;
-	ds->priv = priv;
-
-	ret = dsa_switch_setup_one(ds, parent);
-	if (ret)
-		return ERR_PTR(ret);
-
-	return ds;
-}
-
 void dsa_cpu_dsa_destroy(struct dsa_port *port)
 {
 	struct device_node *port_dn = port->dn;
@@ -376,86 +152,6 @@ void dsa_cpu_dsa_destroy(struct dsa_port *port)
 		of_phy_deregister_fixed_link(port_dn);
 }
 
-static void dsa_switch_destroy(struct dsa_switch *ds)
-{
-	int port;
-
-	/* Destroy network devices for physical switch ports. */
-	for (port = 0; port < ds->num_ports; port++) {
-		if (!(ds->enabled_port_mask & (1 << port)))
-			continue;
-
-		if (!ds->ports[port].netdev)
-			continue;
-
-		dsa_slave_destroy(ds->ports[port].netdev);
-	}
-
-	/* Disable configuration of the CPU and DSA ports */
-	for (port = 0; port < ds->num_ports; port++) {
-		if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
-			continue;
-		dsa_cpu_dsa_destroy(&ds->ports[port]);
-
-		/* Clearing a bit which is not set does no harm */
-		ds->cpu_port_mask |= ~(1 << port);
-		ds->dsa_port_mask |= ~(1 << port);
-	}
-
-	if (ds->slave_mii_bus && ds->ops->phy_read)
-		mdiobus_unregister(ds->slave_mii_bus);
-
-	dsa_switch_unregister_notifier(ds);
-}
-
-#ifdef CONFIG_PM_SLEEP
-int dsa_switch_suspend(struct dsa_switch *ds)
-{
-	int i, ret = 0;
-
-	/* Suspend slave network devices */
-	for (i = 0; i < ds->num_ports; i++) {
-		if (!dsa_is_port_initialized(ds, i))
-			continue;
-
-		ret = dsa_slave_suspend(ds->ports[i].netdev);
-		if (ret)
-			return ret;
-	}
-
-	if (ds->ops->suspend)
-		ret = ds->ops->suspend(ds);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(dsa_switch_suspend);
-
-int dsa_switch_resume(struct dsa_switch *ds)
-{
-	int i, ret = 0;
-
-	if (ds->ops->resume)
-		ret = ds->ops->resume(ds);
-
-	if (ret)
-		return ret;
-
-	/* Resume slave network devices */
-	for (i = 0; i < ds->num_ports; i++) {
-		if (!dsa_is_port_initialized(ds, i))
-			continue;
-
-		ret = dsa_slave_resume(ds->ports[i].netdev);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(dsa_switch_resume);
-#endif
-
-/* platform driver init and cleanup *****************************************/
 static int dev_is_class(struct device *dev, void *class)
 {
 	if (dev->class != NULL && !strcmp(dev->class->name, class))
@@ -474,24 +170,6 @@ static struct device *dev_find_class(struct device *parent, char *class)
 	return device_find_child(parent, class, dev_is_class);
 }
 
-struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
-{
-	struct device *d;
-
-	d = dev_find_class(dev, "mdio_bus");
-	if (d != NULL) {
-		struct mii_bus *bus;
-
-		bus = to_mii_bus(d);
-		put_device(d);
-
-		return bus;
-	}
-
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus);
-
 struct net_device *dsa_dev_to_net_device(struct device *dev)
 {
 	struct device *d;
@@ -511,456 +189,43 @@ struct net_device *dsa_dev_to_net_device(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(dsa_dev_to_net_device);
 
-#ifdef CONFIG_OF
-static int dsa_of_setup_routing_table(struct dsa_platform_data *pd,
-					struct dsa_chip_data *cd,
-					int chip_index, int port_index,
-					struct device_node *link)
-{
-	const __be32 *reg;
-	int link_sw_addr;
-	struct device_node *parent_sw;
-	int len;
-
-	parent_sw = of_get_parent(link);
-	if (!parent_sw)
-		return -EINVAL;
-
-	reg = of_get_property(parent_sw, "reg", &len);
-	if (!reg || (len != sizeof(*reg) * 2))
-		return -EINVAL;
-
-	/*
-	 * Get the destination switch number from the second field of its 'reg'
-	 * property, i.e. for "reg = <0x19 1>" sw_addr is '1'.
-	 */
-	link_sw_addr = be32_to_cpup(reg + 1);
-
-	if (link_sw_addr >= pd->nr_chips)
-		return -EINVAL;
-
-	cd->rtable[link_sw_addr] = port_index;
-
-	return 0;
-}
-
-static int dsa_of_probe_links(struct dsa_platform_data *pd,
-			      struct dsa_chip_data *cd,
-			      int chip_index, int port_index,
-			      struct device_node *port,
-			      const char *port_name)
-{
-	struct device_node *link;
-	int link_index;
-	int ret;
-
-	for (link_index = 0;; link_index++) {
-		link = of_parse_phandle(port, "link", link_index);
-		if (!link)
-			break;
-
-		if (!strcmp(port_name, "dsa") && pd->nr_chips > 1) {
-			ret = dsa_of_setup_routing_table(pd, cd, chip_index,
-							 port_index, link);
-			if (ret)
-				return ret;
-		}
-	}
-	return 0;
-}
-
-static void dsa_of_free_platform_data(struct dsa_platform_data *pd)
-{
-	int i;
-	int port_index;
-
-	for (i = 0; i < pd->nr_chips; i++) {
-		port_index = 0;
-		while (port_index < DSA_MAX_PORTS) {
-			kfree(pd->chip[i].port_names[port_index]);
-			port_index++;
-		}
-
-		/* Drop our reference to the MDIO bus device */
-		if (pd->chip[i].host_dev)
-			put_device(pd->chip[i].host_dev);
-	}
-	kfree(pd->chip);
-}
-
-static int dsa_of_probe(struct device *dev)
-{
-	struct device_node *np = dev->of_node;
-	struct device_node *child, *mdio, *ethernet, *port;
-	struct mii_bus *mdio_bus, *mdio_bus_switch;
-	struct net_device *ethernet_dev;
-	struct dsa_platform_data *pd;
-	struct dsa_chip_data *cd;
-	const char *port_name;
-	int chip_index, port_index;
-	const unsigned int *sw_addr, *port_reg;
-	u32 eeprom_len;
-	int ret;
-
-	mdio = of_parse_phandle(np, "dsa,mii-bus", 0);
-	if (!mdio)
-		return -EINVAL;
-
-	mdio_bus = of_mdio_find_bus(mdio);
-	if (!mdio_bus)
-		return -EPROBE_DEFER;
-
-	ethernet = of_parse_phandle(np, "dsa,ethernet", 0);
-	if (!ethernet) {
-		ret = -EINVAL;
-		goto out_put_mdio;
-	}
-
-	ethernet_dev = of_find_net_device_by_node(ethernet);
-	if (!ethernet_dev) {
-		ret = -EPROBE_DEFER;
-		goto out_put_mdio;
-	}
-
-	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
-	if (!pd) {
-		ret = -ENOMEM;
-		goto out_put_ethernet;
-	}
-
-	dev->platform_data = pd;
-	pd->of_netdev = ethernet_dev;
-	pd->nr_chips = of_get_available_child_count(np);
-	if (pd->nr_chips > DSA_MAX_SWITCHES)
-		pd->nr_chips = DSA_MAX_SWITCHES;
-
-	pd->chip = kcalloc(pd->nr_chips, sizeof(struct dsa_chip_data),
-			   GFP_KERNEL);
-	if (!pd->chip) {
-		ret = -ENOMEM;
-		goto out_free;
-	}
-
-	chip_index = -1;
-	for_each_available_child_of_node(np, child) {
-		int i;
-
-		chip_index++;
-		cd = &pd->chip[chip_index];
-
-		cd->of_node = child;
-
-		/* Initialize the routing table */
-		for (i = 0; i < DSA_MAX_SWITCHES; ++i)
-			cd->rtable[i] = DSA_RTABLE_NONE;
-
-		/* When assigning the host device, increment its refcount */
-		cd->host_dev = get_device(&mdio_bus->dev);
-
-		sw_addr = of_get_property(child, "reg", NULL);
-		if (!sw_addr)
-			continue;
-
-		cd->sw_addr = be32_to_cpup(sw_addr);
-		if (cd->sw_addr >= PHY_MAX_ADDR)
-			continue;
-
-		if (!of_property_read_u32(child, "eeprom-length", &eeprom_len))
-			cd->eeprom_len = eeprom_len;
-
-		mdio = of_parse_phandle(child, "mii-bus", 0);
-		if (mdio) {
-			mdio_bus_switch = of_mdio_find_bus(mdio);
-			if (!mdio_bus_switch) {
-				ret = -EPROBE_DEFER;
-				goto out_free_chip;
-			}
-
-			/* Drop the mdio_bus device ref, replacing the host
-			 * device with the mdio_bus_switch device, keeping
-			 * the refcount from of_mdio_find_bus() above.
-			 */
-			put_device(cd->host_dev);
-			cd->host_dev = &mdio_bus_switch->dev;
-		}
-
-		for_each_available_child_of_node(child, port) {
-			port_reg = of_get_property(port, "reg", NULL);
-			if (!port_reg)
-				continue;
-
-			port_index = be32_to_cpup(port_reg);
-			if (port_index >= DSA_MAX_PORTS)
-				break;
-
-			port_name = of_get_property(port, "label", NULL);
-			if (!port_name)
-				continue;
-
-			cd->port_dn[port_index] = port;
-
-			cd->port_names[port_index] = kstrdup(port_name,
-					GFP_KERNEL);
-			if (!cd->port_names[port_index]) {
-				ret = -ENOMEM;
-				goto out_free_chip;
-			}
-
-			ret = dsa_of_probe_links(pd, cd, chip_index,
-						 port_index, port, port_name);
-			if (ret)
-				goto out_free_chip;
-
-		}
-	}
-
-	/* The individual chips hold their own refcount on the mdio bus,
-	 * so drop ours */
-	put_device(&mdio_bus->dev);
-
-	return 0;
-
-out_free_chip:
-	dsa_of_free_platform_data(pd);
-out_free:
-	kfree(pd);
-	dev->platform_data = NULL;
-out_put_ethernet:
-	put_device(&ethernet_dev->dev);
-out_put_mdio:
-	put_device(&mdio_bus->dev);
-	return ret;
-}
-
-static void dsa_of_remove(struct device *dev)
-{
-	struct dsa_platform_data *pd = dev->platform_data;
-
-	if (!dev->of_node)
-		return;
-
-	dsa_of_free_platform_data(pd);
-	put_device(&pd->of_netdev->dev);
-	kfree(pd);
-}
-#else
-static inline int dsa_of_probe(struct device *dev)
-{
-	return 0;
-}
-
-static inline void dsa_of_remove(struct device *dev)
-{
-}
-#endif
-
-static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
-			 struct device *parent, struct dsa_platform_data *pd)
-{
-	int i;
-	unsigned configured = 0;
-
-	dst->pd = pd;
-	dst->master_netdev = dev;
-	dst->cpu_port = -1;
-
-	for (i = 0; i < pd->nr_chips; i++) {
-		struct dsa_switch *ds;
-
-		ds = dsa_switch_setup(dst, i, parent, pd->chip[i].host_dev);
-		if (IS_ERR(ds)) {
-			netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n",
-				   i, PTR_ERR(ds));
-			continue;
-		}
-
-		dst->ds[i] = ds;
-
-		++configured;
-	}
-
-	/*
-	 * If no switch was found, exit cleanly
-	 */
-	if (!configured)
-		return -EPROBE_DEFER;
-
-	/*
-	 * If we use a tagging format that doesn't have an ethertype
-	 * field, make sure that all packets from this point on get
-	 * sent to the tag format's receive function.
-	 */
-	wmb();
-	dev->dsa_ptr = (void *)dst;
-
-	return 0;
-}
-
-static int dsa_probe(struct platform_device *pdev)
-{
-	struct dsa_platform_data *pd = pdev->dev.platform_data;
-	struct net_device *dev;
-	struct dsa_switch_tree *dst;
-	int ret;
-
-	if (pdev->dev.of_node) {
-		ret = dsa_of_probe(&pdev->dev);
-		if (ret)
-			return ret;
-
-		pd = pdev->dev.platform_data;
-	}
-
-	if (pd == NULL || (pd->netdev == NULL && pd->of_netdev == NULL))
-		return -EINVAL;
-
-	if (pd->of_netdev) {
-		dev = pd->of_netdev;
-		dev_hold(dev);
-	} else {
-		dev = dsa_dev_to_net_device(pd->netdev);
-	}
-	if (dev == NULL) {
-		ret = -EPROBE_DEFER;
-		goto out;
-	}
-
-	if (dev->dsa_ptr != NULL) {
-		dev_put(dev);
-		ret = -EEXIST;
-		goto out;
-	}
-
-	dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
-	if (dst == NULL) {
-		dev_put(dev);
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	platform_set_drvdata(pdev, dst);
-
-	ret = dsa_setup_dst(dst, dev, &pdev->dev, pd);
-	if (ret) {
-		dev_put(dev);
-		goto out;
-	}
-
-	return 0;
-
-out:
-	dsa_of_remove(&pdev->dev);
-
-	return ret;
-}
-
-static void dsa_remove_dst(struct dsa_switch_tree *dst)
-{
-	int i;
-
-	dst->master_netdev->dsa_ptr = NULL;
-
-	/* If we used a tagging format that doesn't have an ethertype
-	 * field, make sure that all packets from this point get sent
-	 * without the tag and go through the regular receive path.
-	 */
-	wmb();
-
-	for (i = 0; i < dst->pd->nr_chips; i++) {
-		struct dsa_switch *ds = dst->ds[i];
-
-		if (ds)
-			dsa_switch_destroy(ds);
-	}
-
-	dsa_cpu_port_ethtool_restore(dst->cpu_switch);
-
-	dev_put(dst->master_netdev);
-}
-
-static int dsa_remove(struct platform_device *pdev)
-{
-	struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
-
-	dsa_remove_dst(dst);
-	dsa_of_remove(&pdev->dev);
-
-	return 0;
-}
-
-static void dsa_shutdown(struct platform_device *pdev)
-{
-}
-
 static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
 			  struct packet_type *pt, struct net_device *orig_dev)
 {
 	struct dsa_switch_tree *dst = dev->dsa_ptr;
+	struct sk_buff *nskb = NULL;
 
 	if (unlikely(dst == NULL)) {
 		kfree_skb(skb);
 		return 0;
 	}
 
-	return dst->rcv(skb, dev, pt, orig_dev);
-}
-
-static struct packet_type dsa_pack_type __read_mostly = {
-	.type	= cpu_to_be16(ETH_P_XDSA),
-	.func	= dsa_switch_rcv,
-};
-
-#ifdef CONFIG_PM_SLEEP
-static int dsa_suspend(struct device *d)
-{
-	struct platform_device *pdev = to_platform_device(d);
-	struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
-	int i, ret = 0;
-
-	for (i = 0; i < dst->pd->nr_chips; i++) {
-		struct dsa_switch *ds = dst->ds[i];
+	skb = skb_unshare(skb, GFP_ATOMIC);
+	if (!skb)
+		return 0;
 
-		if (ds != NULL)
-			ret = dsa_switch_suspend(ds);
+	nskb = dst->rcv(skb, dev, pt, orig_dev);
+	if (!nskb) {
+		kfree_skb(skb);
+		return 0;
 	}
 
-	return ret;
-}
-
-static int dsa_resume(struct device *d)
-{
-	struct platform_device *pdev = to_platform_device(d);
-	struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
-	int i, ret = 0;
+	skb = nskb;
+	skb_push(skb, ETH_HLEN);
+	skb->pkt_type = PACKET_HOST;
+	skb->protocol = eth_type_trans(skb, skb->dev);
 
-	for (i = 0; i < dst->pd->nr_chips; i++) {
-		struct dsa_switch *ds = dst->ds[i];
+	skb->dev->stats.rx_packets++;
+	skb->dev->stats.rx_bytes += skb->len;
 
-		if (ds != NULL)
-			ret = dsa_switch_resume(ds);
-	}
+	netif_receive_skb(skb);
 
-	return ret;
+	return 0;
 }
-#endif
-
-static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume);
 
-static const struct of_device_id dsa_of_match_table[] = {
-	{ .compatible = "marvell,dsa", },
-	{}
-};
-MODULE_DEVICE_TABLE(of, dsa_of_match_table);
-
-static struct platform_driver dsa_driver = {
-	.probe		= dsa_probe,
-	.remove		= dsa_remove,
-	.shutdown	= dsa_shutdown,
-	.driver = {
-		.name	= "dsa",
-		.of_match_table = dsa_of_match_table,
-		.pm	= &dsa_pm_ops,
-	},
+static struct packet_type dsa_pack_type __read_mostly = {
+	.type	= cpu_to_be16(ETH_P_XDSA),
+	.func	= dsa_switch_rcv,
 };
 
 static int __init dsa_init_module(void)
@@ -971,7 +236,7 @@ static int __init dsa_init_module(void)
 	if (rc)
 		return rc;
 
-	rc = platform_driver_register(&dsa_driver);
+	rc = dsa_legacy_register();
 	if (rc)
 		return rc;
 
@@ -985,7 +250,7 @@ static void __exit dsa_cleanup_module(void)
 {
 	dsa_slave_unregister_notifier();
 	dev_remove_pack(&dsa_pack_type);
-	platform_driver_unregister(&dsa_driver);
+	dsa_legacy_unregister();
 }
 module_exit(dsa_cleanup_module);