net: mscc: ocelot: move net_device related functions to ocelot_net.c

The ocelot hardware library shouldn't contain too much net_device
specific code, since it is shared with DSA which abstracts that
structure away. So much as much of this code as possible into the
mscc_ocelot driver and outside of the common library.

We're making an exception for MDB and LAG code. That is not yet exported
to DSA, but when it will, most of the code that's already in ocelot.c
will remain there. So, there's no point in moving code to ocelot_net.c
just to move it back later.

We could have moved all net_device code to ocelot_vsc7514.c directly,
but let's operate under the assumption that if a new switchdev ocelot
driver gets added, it'll define its SoC-specific stuff in a new
ocelot_vsc*.c file and it'll reuse the rest of the code.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1031 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
new file mode 100644
index 000000000000..1ce444dff983
--- /dev/null
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -0,0 +1,1031 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Microsemi Ocelot Switch driver
+ *
+ * Copyright (c) 2017, 2019 Microsemi Corporation
+ */
+
+#include <linux/if_bridge.h>
+#include "ocelot.h"
+#include "ocelot_ace.h"
+
+int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
+			       struct flow_cls_offload *f,
+			       bool ingress)
+{
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	if (!ingress)
+		return -EOPNOTSUPP;
+
+	switch (f->command) {
+	case FLOW_CLS_REPLACE:
+		return ocelot_cls_flower_replace(ocelot, port, f, ingress);
+	case FLOW_CLS_DESTROY:
+		return ocelot_cls_flower_destroy(ocelot, port, f, ingress);
+	case FLOW_CLS_STATS:
+		return ocelot_cls_flower_stats(ocelot, port, f, ingress);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
+					struct tc_cls_matchall_offload *f,
+					bool ingress)
+{
+	struct netlink_ext_ack *extack = f->common.extack;
+	struct ocelot *ocelot = priv->port.ocelot;
+	struct ocelot_policer pol = { 0 };
+	struct flow_action_entry *action;
+	int port = priv->chip_port;
+	int err;
+
+	if (!ingress) {
+		NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported");
+		return -EOPNOTSUPP;
+	}
+
+	switch (f->command) {
+	case TC_CLSMATCHALL_REPLACE:
+		if (!flow_offload_has_one_action(&f->rule->action)) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Only one action is supported");
+			return -EOPNOTSUPP;
+		}
+
+		if (priv->tc.block_shared) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Rate limit is not supported on shared blocks");
+			return -EOPNOTSUPP;
+		}
+
+		action = &f->rule->action.entries[0];
+
+		if (action->id != FLOW_ACTION_POLICE) {
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
+			return -EOPNOTSUPP;
+		}
+
+		if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Only one policer per port is supported");
+			return -EEXIST;
+		}
+
+		pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
+		pol.burst = (u32)div_u64(action->police.rate_bytes_ps *
+					 PSCHED_NS2TICKS(action->police.burst),
+					 PSCHED_TICKS_PER_SEC);
+
+		err = ocelot_port_policer_add(ocelot, port, &pol);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
+			return err;
+		}
+
+		priv->tc.police_id = f->cookie;
+		priv->tc.offload_cnt++;
+		return 0;
+	case TC_CLSMATCHALL_DESTROY:
+		if (priv->tc.police_id != f->cookie)
+			return -ENOENT;
+
+		err = ocelot_port_policer_del(ocelot, port);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Could not delete policer");
+			return err;
+		}
+		priv->tc.police_id = 0;
+		priv->tc.offload_cnt--;
+		return 0;
+	case TC_CLSMATCHALL_STATS:
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int ocelot_setup_tc_block_cb(enum tc_setup_type type,
+				    void *type_data,
+				    void *cb_priv, bool ingress)
+{
+	struct ocelot_port_private *priv = cb_priv;
+
+	if (!tc_cls_can_offload_and_chain0(priv->dev, type_data))
+		return -EOPNOTSUPP;
+
+	switch (type) {
+	case TC_SETUP_CLSMATCHALL:
+		return ocelot_setup_tc_cls_matchall(priv, type_data, ingress);
+	case TC_SETUP_CLSFLOWER:
+		return ocelot_setup_tc_cls_flower(priv, type_data, ingress);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type,
+				       void *type_data,
+				       void *cb_priv)
+{
+	return ocelot_setup_tc_block_cb(type, type_data,
+					cb_priv, true);
+}
+
+static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type,
+				       void *type_data,
+				       void *cb_priv)
+{
+	return ocelot_setup_tc_block_cb(type, type_data,
+					cb_priv, false);
+}
+
+static LIST_HEAD(ocelot_block_cb_list);
+
+static int ocelot_setup_tc_block(struct ocelot_port_private *priv,
+				 struct flow_block_offload *f)
+{
+	struct flow_block_cb *block_cb;
+	flow_setup_cb_t *cb;
+
+	if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) {
+		cb = ocelot_setup_tc_block_cb_ig;
+		priv->tc.block_shared = f->block_shared;
+	} else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) {
+		cb = ocelot_setup_tc_block_cb_eg;
+	} else {
+		return -EOPNOTSUPP;
+	}
+
+	f->driver_block_list = &ocelot_block_cb_list;
+
+	switch (f->command) {
+	case FLOW_BLOCK_BIND:
+		if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list))
+			return -EBUSY;
+
+		block_cb = flow_block_cb_alloc(cb, priv, priv, NULL);
+		if (IS_ERR(block_cb))
+			return PTR_ERR(block_cb);
+
+		flow_block_cb_add(block_cb, f);
+		list_add_tail(&block_cb->driver_list, f->driver_block_list);
+		return 0;
+	case FLOW_BLOCK_UNBIND:
+		block_cb = flow_block_cb_lookup(f->block, cb, priv);
+		if (!block_cb)
+			return -ENOENT;
+
+		flow_block_cb_remove(block_cb, f);
+		list_del(&block_cb->driver_list);
+		return 0;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type,
+			   void *type_data)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+
+	switch (type) {
+	case TC_SETUP_BLOCK:
+		return ocelot_setup_tc_block(priv, type_data);
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+static void ocelot_port_adjust_link(struct net_device *dev)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	ocelot_adjust_link(ocelot, port, dev->phydev);
+}
+
+static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
+			       bool untagged)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	int port = priv->chip_port;
+	int ret;
+
+	ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged);
+	if (ret)
+		return ret;
+
+	/* Add the port MAC address to with the right VLAN information */
+	ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,
+			  ENTRYTYPE_LOCKED);
+
+	return 0;
+}
+
+static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+	int ret;
+
+	/* 8021q removes VID 0 on module unload for all interfaces
+	 * with VLAN filtering feature. We need to keep it to receive
+	 * untagged traffic.
+	 */
+	if (vid == 0)
+		return 0;
+
+	ret = ocelot_vlan_del(ocelot, port, vid);
+	if (ret)
+		return ret;
+
+	/* Del the port MAC address to with the right VLAN information */
+	ocelot_mact_forget(ocelot, dev->dev_addr, vid);
+
+	return 0;
+}
+
+static int ocelot_port_open(struct net_device *dev)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	int port = priv->chip_port;
+	int err;
+
+	if (priv->serdes) {
+		err = phy_set_mode_ext(priv->serdes, PHY_MODE_ETHERNET,
+				       ocelot_port->phy_mode);
+		if (err) {
+			netdev_err(dev, "Could not set mode of SerDes\n");
+			return err;
+		}
+	}
+
+	err = phy_connect_direct(dev, priv->phy, &ocelot_port_adjust_link,
+				 ocelot_port->phy_mode);
+	if (err) {
+		netdev_err(dev, "Could not attach to PHY\n");
+		return err;
+	}
+
+	dev->phydev = priv->phy;
+
+	phy_attached_info(priv->phy);
+	phy_start(priv->phy);
+
+	ocelot_port_enable(ocelot, port, priv->phy);
+
+	return 0;
+}
+
+static int ocelot_port_stop(struct net_device *dev)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	phy_disconnect(priv->phy);
+
+	dev->phydev = NULL;
+
+	ocelot_port_disable(ocelot, port);
+
+	return 0;
+}
+
+/* Generate the IFH for frame injection
+ *
+ * The IFH is a 128bit-value
+ * bit 127: bypass the analyzer processing
+ * bit 56-67: destination mask
+ * bit 28-29: pop_cnt: 3 disables all rewriting of the frame
+ * bit 20-27: cpu extraction queue mask
+ * bit 16: tag type 0: C-tag, 1: S-tag
+ * bit 0-11: VID
+ */
+static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info)
+{
+	ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21);
+	ifh[1] = (0xf00 & info->port) >> 8;
+	ifh[2] = (0xff & info->port) << 24;
+	ifh[3] = (info->tag_type << 16) | info->vid;
+
+	return 0;
+}
+
+static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct skb_shared_info *shinfo = skb_shinfo(skb);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	u32 val, ifh[OCELOT_TAG_LEN / 4];
+	struct frame_info info = {};
+	u8 grp = 0; /* Send everything on CPU group 0 */
+	unsigned int i, count, last;
+	int port = priv->chip_port;
+
+	val = ocelot_read(ocelot, QS_INJ_STATUS);
+	if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) ||
+	    (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp))))
+		return NETDEV_TX_BUSY;
+
+	ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
+			 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);
+
+	info.port = BIT(port);
+	info.tag_type = IFH_TAG_TYPE_C;
+	info.vid = skb_vlan_tag_get(skb);
+
+	/* Check if timestamping is needed */
+	if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP) {
+		info.rew_op = ocelot_port->ptp_cmd;
+		if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP)
+			info.rew_op |= (ocelot_port->ts_id  % 4) << 3;
+	}
+
+	ocelot_gen_ifh(ifh, &info);
+
+	for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
+		ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]),
+				 QS_INJ_WR, grp);
+
+	count = (skb->len + 3) / 4;
+	last = skb->len % 4;
+	for (i = 0; i < count; i++)
+		ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp);
+
+	/* Add padding */
+	while (i < (OCELOT_BUFFER_CELL_SZ / 4)) {
+		ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
+		i++;
+	}
+
+	/* Indicate EOF and valid bytes in last word */
+	ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
+			 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) |
+			 QS_INJ_CTRL_EOF,
+			 QS_INJ_CTRL, grp);
+
+	/* Add dummy CRC */
+	ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
+	skb_tx_timestamp(skb);
+
+	dev->stats.tx_packets++;
+	dev->stats.tx_bytes += skb->len;
+
+	if (!ocelot_port_add_txtstamp_skb(ocelot_port, skb)) {
+		ocelot_port->ts_id++;
+		return NETDEV_TX_OK;
+	}
+
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+
+	return ocelot_mact_forget(ocelot, addr, ocelot_port->pvid);
+}
+
+static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+
+	return ocelot_mact_learn(ocelot, PGID_CPU, addr, ocelot_port->pvid,
+				 ENTRYTYPE_LOCKED);
+}
+
+static void ocelot_set_rx_mode(struct net_device *dev)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	u32 val;
+	int i;
+
+	/* This doesn't handle promiscuous mode because the bridge core is
+	 * setting IFF_PROMISC on all slave interfaces and all frames would be
+	 * forwarded to the CPU port.
+	 */
+	val = GENMASK(ocelot->num_phys_ports - 1, 0);
+	for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++)
+		ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
+
+	__dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync);
+}
+
+static int ocelot_port_get_phys_port_name(struct net_device *dev,
+					  char *buf, size_t len)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	int port = priv->chip_port;
+	int ret;
+
+	ret = snprintf(buf, len, "p%d", port);
+	if (ret >= len)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	const struct sockaddr *addr = p;
+
+	/* Learn the new net device MAC address in the mac table. */
+	ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, ocelot_port->pvid,
+			  ENTRYTYPE_LOCKED);
+	/* Then forget the previous one. */
+	ocelot_mact_forget(ocelot, dev->dev_addr, ocelot_port->pvid);
+
+	ether_addr_copy(dev->dev_addr, addr->sa_data);
+	return 0;
+}
+
+static void ocelot_get_stats64(struct net_device *dev,
+			       struct rtnl_link_stats64 *stats)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	/* Configure the port to read the stats from */
+	ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port),
+		     SYS_STAT_CFG);
+
+	/* Get Rx stats */
+	stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS);
+	stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_LONGS) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_64) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_65_127) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_128_255) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_256_1023) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) +
+			    ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX);
+	stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST);
+	stats->rx_dropped = dev->stats.rx_dropped;
+
+	/* Get Tx stats */
+	stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS);
+	stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) +
+			    ocelot_read(ocelot, SYS_COUNT_TX_65_127) +
+			    ocelot_read(ocelot, SYS_COUNT_TX_128_511) +
+			    ocelot_read(ocelot, SYS_COUNT_TX_512_1023) +
+			    ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) +
+			    ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX);
+	stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) +
+			    ocelot_read(ocelot, SYS_COUNT_TX_AGING);
+	stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION);
+}
+
+static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
+			       struct net_device *dev,
+			       const unsigned char *addr,
+			       u16 vid, u16 flags,
+			       struct netlink_ext_ack *extack)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	return ocelot_fdb_add(ocelot, port, addr, vid);
+}
+
+static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
+			       struct net_device *dev,
+			       const unsigned char *addr, u16 vid)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	return ocelot_fdb_del(ocelot, port, addr, vid);
+}
+
+static int ocelot_port_fdb_dump(struct sk_buff *skb,
+				struct netlink_callback *cb,
+				struct net_device *dev,
+				struct net_device *filter_dev, int *idx)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	struct ocelot_dump_ctx dump = {
+		.dev = dev,
+		.skb = skb,
+		.cb = cb,
+		.idx = *idx,
+	};
+	int port = priv->chip_port;
+	int ret;
+
+	ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump);
+
+	*idx = dump.idx;
+
+	return ret;
+}
+
+static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
+				  u16 vid)
+{
+	return ocelot_vlan_vid_add(dev, vid, false, false);
+}
+
+static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
+				   u16 vid)
+{
+	return ocelot_vlan_vid_del(dev, vid);
+}
+
+static void ocelot_vlan_mode(struct ocelot *ocelot, int port,
+			     netdev_features_t features)
+{
+	u32 val;
+
+	/* Filtering */
+	val = ocelot_read(ocelot, ANA_VLANMASK);
+	if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
+		val |= BIT(port);
+	else
+		val &= ~BIT(port);
+	ocelot_write(ocelot, val, ANA_VLANMASK);
+}
+
+static int ocelot_set_features(struct net_device *dev,
+			       netdev_features_t features)
+{
+	netdev_features_t changed = dev->features ^ features;
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
+	    priv->tc.offload_cnt) {
+		netdev_err(dev,
+			   "Cannot disable HW TC offload while offloads active\n");
+		return -EBUSY;
+	}
+
+	if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
+		ocelot_vlan_mode(ocelot, port, features);
+
+	return 0;
+}
+
+static int ocelot_get_port_parent_id(struct net_device *dev,
+				     struct netdev_phys_item_id *ppid)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+
+	ppid->id_len = sizeof(ocelot->base_mac);
+	memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len);
+
+	return 0;
+}
+
+static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	/* If the attached PHY device isn't capable of timestamping operations,
+	 * use our own (when possible).
+	 */
+	if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) {
+		switch (cmd) {
+		case SIOCSHWTSTAMP:
+			return ocelot_hwstamp_set(ocelot, port, ifr);
+		case SIOCGHWTSTAMP:
+			return ocelot_hwstamp_get(ocelot, port, ifr);
+		}
+	}
+
+	return phy_mii_ioctl(dev->phydev, ifr, cmd);
+}
+
+static const struct net_device_ops ocelot_port_netdev_ops = {
+	.ndo_open			= ocelot_port_open,
+	.ndo_stop			= ocelot_port_stop,
+	.ndo_start_xmit			= ocelot_port_xmit,
+	.ndo_set_rx_mode		= ocelot_set_rx_mode,
+	.ndo_get_phys_port_name		= ocelot_port_get_phys_port_name,
+	.ndo_set_mac_address		= ocelot_port_set_mac_address,
+	.ndo_get_stats64		= ocelot_get_stats64,
+	.ndo_fdb_add			= ocelot_port_fdb_add,
+	.ndo_fdb_del			= ocelot_port_fdb_del,
+	.ndo_fdb_dump			= ocelot_port_fdb_dump,
+	.ndo_vlan_rx_add_vid		= ocelot_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid		= ocelot_vlan_rx_kill_vid,
+	.ndo_set_features		= ocelot_set_features,
+	.ndo_get_port_parent_id		= ocelot_get_port_parent_id,
+	.ndo_setup_tc			= ocelot_setup_tc,
+	.ndo_do_ioctl			= ocelot_ioctl,
+};
+
+static void ocelot_port_get_strings(struct net_device *netdev, u32 sset,
+				    u8 *data)
+{
+	struct ocelot_port_private *priv = netdev_priv(netdev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	ocelot_get_strings(ocelot, port, sset, data);
+}
+
+static void ocelot_port_get_ethtool_stats(struct net_device *dev,
+					  struct ethtool_stats *stats,
+					  u64 *data)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	ocelot_get_ethtool_stats(ocelot, port, data);
+}
+
+static int ocelot_port_get_sset_count(struct net_device *dev, int sset)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	return ocelot_get_sset_count(ocelot, port, sset);
+}
+
+static int ocelot_port_get_ts_info(struct net_device *dev,
+				   struct ethtool_ts_info *info)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	if (!ocelot->ptp)
+		return ethtool_op_get_ts_info(dev, info);
+
+	return ocelot_get_ts_info(ocelot, port, info);
+}
+
+static const struct ethtool_ops ocelot_ethtool_ops = {
+	.get_strings		= ocelot_port_get_strings,
+	.get_ethtool_stats	= ocelot_port_get_ethtool_stats,
+	.get_sset_count		= ocelot_port_get_sset_count,
+	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
+	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
+	.get_ts_info		= ocelot_port_get_ts_info,
+};
+
+static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port,
+					   struct switchdev_trans *trans,
+					   u8 state)
+{
+	if (switchdev_trans_ph_prepare(trans))
+		return;
+
+	ocelot_bridge_stp_state_set(ocelot, port, state);
+}
+
+static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port,
+					unsigned long ageing_clock_t)
+{
+	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
+	u32 ageing_time = jiffies_to_msecs(ageing_jiffies);
+
+	ocelot_set_ageing_time(ocelot, ageing_time);
+}
+
+static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc)
+{
+	u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
+			    ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
+			    ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;
+	u32 val = 0;
+
+	if (mc)
+		val = cpu_fwd_mcast;
+
+	ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast,
+		       ANA_PORT_CPU_FWD_CFG, port);
+}
+
+static int ocelot_port_attr_set(struct net_device *dev,
+				const struct switchdev_attr *attr,
+				struct switchdev_trans *trans)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+	int err = 0;
+
+	switch (attr->id) {
+	case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
+		ocelot_port_attr_stp_state_set(ocelot, port, trans,
+					       attr->u.stp_state);
+		break;
+	case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
+		ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time);
+		break;
+	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
+		ocelot_port_vlan_filtering(ocelot, port,
+					   attr->u.vlan_filtering);
+		break;
+	case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
+		ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+static int ocelot_port_obj_add_vlan(struct net_device *dev,
+				    const struct switchdev_obj_port_vlan *vlan,
+				    struct switchdev_trans *trans)
+{
+	int ret;
+	u16 vid;
+
+	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
+		ret = ocelot_vlan_vid_add(dev, vid,
+					  vlan->flags & BRIDGE_VLAN_INFO_PVID,
+					  vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int ocelot_port_vlan_del_vlan(struct net_device *dev,
+				     const struct switchdev_obj_port_vlan *vlan)
+{
+	int ret;
+	u16 vid;
+
+	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
+		ret = ocelot_vlan_vid_del(dev, vid);
+
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int ocelot_port_obj_add(struct net_device *dev,
+			       const struct switchdev_obj *obj,
+			       struct switchdev_trans *trans,
+			       struct netlink_ext_ack *extack)
+{
+	int ret = 0;
+
+	switch (obj->id) {
+	case SWITCHDEV_OBJ_ID_PORT_VLAN:
+		ret = ocelot_port_obj_add_vlan(dev,
+					       SWITCHDEV_OBJ_PORT_VLAN(obj),
+					       trans);
+		break;
+	case SWITCHDEV_OBJ_ID_PORT_MDB:
+		ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj),
+					      trans);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return ret;
+}
+
+static int ocelot_port_obj_del(struct net_device *dev,
+			       const struct switchdev_obj *obj)
+{
+	int ret = 0;
+
+	switch (obj->id) {
+	case SWITCHDEV_OBJ_ID_PORT_VLAN:
+		ret = ocelot_port_vlan_del_vlan(dev,
+						SWITCHDEV_OBJ_PORT_VLAN(obj));
+		break;
+	case SWITCHDEV_OBJ_ID_PORT_MDB:
+		ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return ret;
+}
+
+/* Checks if the net_device instance given to us originate from our driver. */
+static bool ocelot_netdevice_dev_check(const struct net_device *dev)
+{
+	return dev->netdev_ops == &ocelot_port_netdev_ops;
+}
+
+static int ocelot_netdevice_port_event(struct net_device *dev,
+				       unsigned long event,
+				       struct netdev_notifier_changeupper_info *info)
+{
+	struct ocelot_port_private *priv = netdev_priv(dev);
+	struct ocelot_port *ocelot_port = &priv->port;
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	int port = priv->chip_port;
+	int err = 0;
+
+	switch (event) {
+	case NETDEV_CHANGEUPPER:
+		if (netif_is_bridge_master(info->upper_dev)) {
+			if (info->linking) {
+				err = ocelot_port_bridge_join(ocelot, port,
+							      info->upper_dev);
+			} else {
+				err = ocelot_port_bridge_leave(ocelot, port,
+							       info->upper_dev);
+			}
+		}
+		if (netif_is_lag_master(info->upper_dev)) {
+			if (info->linking)
+				err = ocelot_port_lag_join(ocelot, port,
+							   info->upper_dev);
+			else
+				ocelot_port_lag_leave(ocelot, port,
+						      info->upper_dev);
+		}
+		break;
+	default:
+		break;
+	}
+
+	return err;
+}
+
+static int ocelot_netdevice_event(struct notifier_block *unused,
+				  unsigned long event, void *ptr)
+{
+	struct netdev_notifier_changeupper_info *info = ptr;
+	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+	int ret = 0;
+
+	if (!ocelot_netdevice_dev_check(dev))
+		return 0;
+
+	if (event == NETDEV_PRECHANGEUPPER &&
+	    netif_is_lag_master(info->upper_dev)) {
+		struct netdev_lag_upper_info *lag_upper_info = info->upper_info;
+		struct netlink_ext_ack *extack;
+
+		if (lag_upper_info &&
+		    lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
+			extack = netdev_notifier_info_to_extack(&info->info);
+			NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type");
+
+			ret = -EINVAL;
+			goto notify;
+		}
+	}
+
+	if (netif_is_lag_master(dev)) {
+		struct net_device *slave;
+		struct list_head *iter;
+
+		netdev_for_each_lower_dev(dev, slave, iter) {
+			ret = ocelot_netdevice_port_event(slave, event, info);
+			if (ret)
+				goto notify;
+		}
+	} else {
+		ret = ocelot_netdevice_port_event(dev, event, info);
+	}
+
+notify:
+	return notifier_from_errno(ret);
+}
+
+struct notifier_block ocelot_netdevice_nb __read_mostly = {
+	.notifier_call = ocelot_netdevice_event,
+};
+EXPORT_SYMBOL(ocelot_netdevice_nb);
+
+static int ocelot_switchdev_event(struct notifier_block *unused,
+				  unsigned long event, void *ptr)
+{
+	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+	int err;
+
+	switch (event) {
+	case SWITCHDEV_PORT_ATTR_SET:
+		err = switchdev_handle_port_attr_set(dev, ptr,
+						     ocelot_netdevice_dev_check,
+						     ocelot_port_attr_set);
+		return notifier_from_errno(err);
+	}
+
+	return NOTIFY_DONE;
+}
+
+struct notifier_block ocelot_switchdev_nb __read_mostly = {
+	.notifier_call = ocelot_switchdev_event,
+};
+EXPORT_SYMBOL(ocelot_switchdev_nb);
+
+static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
+					   unsigned long event, void *ptr)
+{
+	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+	int err;
+
+	switch (event) {
+		/* Blocking events. */
+	case SWITCHDEV_PORT_OBJ_ADD:
+		err = switchdev_handle_port_obj_add(dev, ptr,
+						    ocelot_netdevice_dev_check,
+						    ocelot_port_obj_add);
+		return notifier_from_errno(err);
+	case SWITCHDEV_PORT_OBJ_DEL:
+		err = switchdev_handle_port_obj_del(dev, ptr,
+						    ocelot_netdevice_dev_check,
+						    ocelot_port_obj_del);
+		return notifier_from_errno(err);
+	case SWITCHDEV_PORT_ATTR_SET:
+		err = switchdev_handle_port_attr_set(dev, ptr,
+						     ocelot_netdevice_dev_check,
+						     ocelot_port_attr_set);
+		return notifier_from_errno(err);
+	}
+
+	return NOTIFY_DONE;
+}
+
+struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {
+	.notifier_call = ocelot_switchdev_blocking_event,
+};
+EXPORT_SYMBOL(ocelot_switchdev_blocking_nb);
+
+int ocelot_probe_port(struct ocelot *ocelot, u8 port,
+		      void __iomem *regs,
+		      struct phy_device *phy)
+{
+	struct ocelot_port_private *priv;
+	struct ocelot_port *ocelot_port;
+	struct net_device *dev;
+	int err;
+
+	dev = alloc_etherdev(sizeof(struct ocelot_port_private));
+	if (!dev)
+		return -ENOMEM;
+	SET_NETDEV_DEV(dev, ocelot->dev);
+	priv = netdev_priv(dev);
+	priv->dev = dev;
+	priv->phy = phy;
+	priv->chip_port = port;
+	ocelot_port = &priv->port;
+	ocelot_port->ocelot = ocelot;
+	ocelot_port->regs = regs;
+	ocelot->ports[port] = ocelot_port;
+
+	dev->netdev_ops = &ocelot_port_netdev_ops;
+	dev->ethtool_ops = &ocelot_ethtool_ops;
+
+	dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS |
+		NETIF_F_HW_TC;
+	dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
+
+	memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN);
+	dev->dev_addr[ETH_ALEN - 1] += port;
+	ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
+			  ENTRYTYPE_LOCKED);
+
+	ocelot_init_port(ocelot, port);
+
+	err = register_netdev(dev);
+	if (err) {
+		dev_err(ocelot->dev, "register_netdev failed\n");
+		free_netdev(dev);
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(ocelot_probe_port);