net: mscc: Add initial Ocelot switch support

Add a driver for Microsemi Ocelot Ethernet switch support.

This makes two modules:
mscc_ocelot_common handles all the common features that doesn't depend on
how the switch is integrated in the SoC. Currently, it handles offloading
bridging to the hardware. ocelot_io.c handles register accesses. This is
unfortunately needed because the register layout is packed and then depends
on the number of ports available on the switch. The register definition
files are automatically generated.

ocelot_board handles the switch integration on the SoC and on the board.

Frame injection and extraction to/from the CPU port is currently done using
register accesses which is quite slow. DMA is possible but the port is not
able to absorb the whole switch bandwidth.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1333 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
new file mode 100644
index 000000000000..c8c74aa548d9
--- /dev/null
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -0,0 +1,1333 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Microsemi Ocelot Switch driver
+ *
+ * Copyright (c) 2017 Microsemi Corporation
+ */
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/if_bridge.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include <linux/skbuff.h>
+#include <net/arp.h>
+#include <net/netevent.h>
+#include <net/rtnetlink.h>
+#include <net/switchdev.h>
+
+#include "ocelot.h"
+
+/* MAC table entry types.
+ * ENTRYTYPE_NORMAL is subject to aging.
+ * ENTRYTYPE_LOCKED is not subject to aging.
+ * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
+ * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
+ */
+enum macaccess_entry_type {
+	ENTRYTYPE_NORMAL = 0,
+	ENTRYTYPE_LOCKED,
+	ENTRYTYPE_MACv4,
+	ENTRYTYPE_MACv6,
+};
+
+struct ocelot_mact_entry {
+	u8 mac[ETH_ALEN];
+	u16 vid;
+	enum macaccess_entry_type type;
+};
+
+static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
+{
+	unsigned int val, timeout = 10;
+
+	/* Wait for the issued mac table command to be completed, or timeout.
+	 * When the command read from  ANA_TABLES_MACACCESS is
+	 * MACACCESS_CMD_IDLE, the issued command completed successfully.
+	 */
+	do {
+		val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
+		val &= ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M;
+	} while (val != MACACCESS_CMD_IDLE && timeout--);
+
+	if (!timeout)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static void ocelot_mact_select(struct ocelot *ocelot,
+			       const unsigned char mac[ETH_ALEN],
+			       unsigned int vid)
+{
+	u32 macl = 0, mach = 0;
+
+	/* Set the MAC address to handle and the vlan associated in a format
+	 * understood by the hardware.
+	 */
+	mach |= vid    << 16;
+	mach |= mac[0] << 8;
+	mach |= mac[1] << 0;
+	macl |= mac[2] << 24;
+	macl |= mac[3] << 16;
+	macl |= mac[4] << 8;
+	macl |= mac[5] << 0;
+
+	ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA);
+	ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA);
+
+}
+
+static int ocelot_mact_learn(struct ocelot *ocelot, int port,
+			     const unsigned char mac[ETH_ALEN],
+			     unsigned int vid,
+			     enum macaccess_entry_type type)
+{
+	ocelot_mact_select(ocelot, mac, vid);
+
+	/* Issue a write command */
+	ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID |
+			     ANA_TABLES_MACACCESS_DEST_IDX(port) |
+			     ANA_TABLES_MACACCESS_ENTRYTYPE(type) |
+			     ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN),
+			     ANA_TABLES_MACACCESS);
+
+	return ocelot_mact_wait_for_completion(ocelot);
+}
+
+static int ocelot_mact_forget(struct ocelot *ocelot,
+			      const unsigned char mac[ETH_ALEN],
+			      unsigned int vid)
+{
+	ocelot_mact_select(ocelot, mac, vid);
+
+	/* Issue a forget command */
+	ocelot_write(ocelot,
+		     ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET),
+		     ANA_TABLES_MACACCESS);
+
+	return ocelot_mact_wait_for_completion(ocelot);
+}
+
+static void ocelot_mact_init(struct ocelot *ocelot)
+{
+	/* Configure the learning mode entries attributes:
+	 * - Do not copy the frame to the CPU extraction queues.
+	 * - Use the vlan and mac_cpoy for dmac lookup.
+	 */
+	ocelot_rmw(ocelot, 0,
+		   ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS
+		   | ANA_AGENCTRL_LEARN_FWD_KILL
+		   | ANA_AGENCTRL_LEARN_IGNORE_VLAN,
+		   ANA_AGENCTRL);
+
+	/* Clear the MAC table */
+	ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS);
+}
+
+static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot)
+{
+	unsigned int val, timeout = 10;
+
+	/* Wait for the issued mac table command to be completed, or timeout.
+	 * When the command read from ANA_TABLES_MACACCESS is
+	 * MACACCESS_CMD_IDLE, the issued command completed successfully.
+	 */
+	do {
+		val = ocelot_read(ocelot, ANA_TABLES_VLANACCESS);
+		val &= ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M;
+	} while (val != ANA_TABLES_VLANACCESS_CMD_IDLE && timeout--);
+
+	if (!timeout)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static void ocelot_vlan_init(struct ocelot *ocelot)
+{
+	/* Clear VLAN table, by default all ports are members of all VLANs */
+	ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT,
+		     ANA_TABLES_VLANACCESS);
+	ocelot_vlant_wait_for_completion(ocelot);
+}
+
+/* Watermark encode
+ * Bit 8:   Unit; 0:1, 1:16
+ * Bit 7-0: Value to be multiplied with unit
+ */
+static u16 ocelot_wm_enc(u16 value)
+{
+	if (value >= BIT(8))
+		return BIT(8) | (value / 16);
+
+	return value;
+}
+
+static void ocelot_port_adjust_link(struct net_device *dev)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	u8 p = port->chip_port;
+	int speed, atop_wm, mode = 0;
+
+	switch (dev->phydev->speed) {
+	case SPEED_10:
+		speed = OCELOT_SPEED_10;
+		break;
+	case SPEED_100:
+		speed = OCELOT_SPEED_100;
+		break;
+	case SPEED_1000:
+		speed = OCELOT_SPEED_1000;
+		mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
+		break;
+	case SPEED_2500:
+		speed = OCELOT_SPEED_2500;
+		mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
+		break;
+	default:
+		netdev_err(dev, "Unsupported PHY speed: %d\n",
+			   dev->phydev->speed);
+		return;
+	}
+
+	phy_print_status(dev->phydev);
+
+	if (!dev->phydev->link)
+		return;
+
+	/* Only full duplex supported for now */
+	ocelot_port_writel(port, DEV_MAC_MODE_CFG_FDX_ENA |
+			   mode, DEV_MAC_MODE_CFG);
+
+	/* Set MAC IFG Gaps
+	 * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0
+	 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5
+	 */
+	ocelot_port_writel(port, DEV_MAC_IFG_CFG_TX_IFG(5), DEV_MAC_IFG_CFG);
+
+	/* Load seed (0) and set MAC HDX late collision  */
+	ocelot_port_writel(port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) |
+			   DEV_MAC_HDX_CFG_SEED_LOAD,
+			   DEV_MAC_HDX_CFG);
+	mdelay(1);
+	ocelot_port_writel(port, DEV_MAC_HDX_CFG_LATE_COL_POS(67),
+			   DEV_MAC_HDX_CFG);
+
+	/* Disable HDX fast control */
+	ocelot_port_writel(port, DEV_PORT_MISC_HDX_FAST_DIS, DEV_PORT_MISC);
+
+	/* SGMII only for now */
+	ocelot_port_writel(port, PCS1G_MODE_CFG_SGMII_MODE_ENA, PCS1G_MODE_CFG);
+	ocelot_port_writel(port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
+
+	/* Enable PCS */
+	ocelot_port_writel(port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
+
+	/* No aneg on SGMII */
+	ocelot_port_writel(port, 0, PCS1G_ANEG_CFG);
+
+	/* No loopback */
+	ocelot_port_writel(port, 0, PCS1G_LB_CFG);
+
+	/* Set Max Length and maximum tags allowed */
+	ocelot_port_writel(port, VLAN_ETH_FRAME_LEN, DEV_MAC_MAXLEN_CFG);
+	ocelot_port_writel(port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) |
+			   DEV_MAC_TAGS_CFG_VLAN_AWR_ENA |
+			   DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA,
+			   DEV_MAC_TAGS_CFG);
+
+	/* Enable MAC module */
+	ocelot_port_writel(port, DEV_MAC_ENA_CFG_RX_ENA |
+			   DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
+
+	/* Take MAC, Port, Phy (intern) and PCS (SGMII/Serdes) clock out of
+	 * reset */
+	ocelot_port_writel(port, DEV_CLOCK_CFG_LINK_SPEED(speed),
+			   DEV_CLOCK_CFG);
+
+	/* Set SMAC of Pause frame (00:00:00:00:00:00) */
+	ocelot_port_writel(port, 0, DEV_MAC_FC_MAC_HIGH_CFG);
+	ocelot_port_writel(port, 0, DEV_MAC_FC_MAC_LOW_CFG);
+
+	/* No PFC */
+	ocelot_write_gix(ocelot, ANA_PFC_PFC_CFG_FC_LINK_SPEED(speed),
+			 ANA_PFC_PFC_CFG, p);
+
+	/* Set Pause WM hysteresis
+	 * 152 = 6 * VLAN_ETH_FRAME_LEN / OCELOT_BUFFER_CELL_SZ
+	 * 101 = 4 * VLAN_ETH_FRAME_LEN / OCELOT_BUFFER_CELL_SZ
+	 */
+	ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA |
+			 SYS_PAUSE_CFG_PAUSE_STOP(101) |
+			 SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, p);
+
+	/* Core: Enable port for frame transfer */
+	ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
+			 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
+			 QSYS_SWITCH_PORT_MODE_PORT_ENA,
+			 QSYS_SWITCH_PORT_MODE, p);
+
+	/* Flow control */
+	ocelot_write_rix(ocelot, SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
+			 SYS_MAC_FC_CFG_RX_FC_ENA | SYS_MAC_FC_CFG_TX_FC_ENA |
+			 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA |
+			 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
+			 SYS_MAC_FC_CFG_FC_LINK_SPEED(speed),
+			 SYS_MAC_FC_CFG, p);
+	ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, p);
+
+	/* Tail dropping watermark */
+	atop_wm = (ocelot->shared_queue_sz - 9 * VLAN_ETH_FRAME_LEN) / OCELOT_BUFFER_CELL_SZ;
+	ocelot_write_rix(ocelot, ocelot_wm_enc(9 * VLAN_ETH_FRAME_LEN),
+			 SYS_ATOP, p);
+	ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
+}
+
+static int ocelot_port_open(struct net_device *dev)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	int err;
+
+	/* Enable receiving frames on the port, and activate auto-learning of
+	 * MAC addresses.
+	 */
+	ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
+			 ANA_PORT_PORT_CFG_RECV_ENA |
+			 ANA_PORT_PORT_CFG_PORTID_VAL(port->chip_port),
+			 ANA_PORT_PORT_CFG, port->chip_port);
+
+	err = phy_connect_direct(dev, port->phy, &ocelot_port_adjust_link,
+				 PHY_INTERFACE_MODE_NA);
+	if (err) {
+		netdev_err(dev, "Could not attach to PHY\n");
+		return err;
+	}
+
+	dev->phydev = port->phy;
+
+	phy_attached_info(port->phy);
+	phy_start(port->phy);
+	return 0;
+}
+
+static int ocelot_port_stop(struct net_device *dev)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+
+	phy_disconnect(port->phy);
+
+	dev->phydev = NULL;
+
+	ocelot_port_writel(port, 0, DEV_MAC_ENA_CFG);
+	ocelot_rmw_rix(port->ocelot, 0, QSYS_SWITCH_PORT_MODE_PORT_ENA,
+			 QSYS_SWITCH_PORT_MODE, port->chip_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;
+	ifh[1] = (0xff00 & info->port) >> 8;
+	ifh[2] = (0xff & info->port) << 24;
+	ifh[3] = IFH_INJ_POP_CNT_DISABLE | (info->cpuq << 20) |
+		 (info->tag_type << 16) | info->vid;
+
+	return 0;
+}
+
+static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	u32 val, ifh[IFH_LEN];
+	struct frame_info info = {};
+	u8 grp = 0; /* Send everything on CPU group 0 */
+	unsigned int i, count, last;
+
+	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->chip_port);
+	info.cpuq = 0xff;
+	ocelot_gen_ifh(ifh, &info);
+
+	for (i = 0; i < IFH_LEN; i++)
+		ocelot_write_rix(ocelot, 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;
+	dev_kfree_skb_any(skb);
+
+	return NETDEV_TX_OK;
+}
+
+static void ocelot_mact_mc_reset(struct ocelot_port *port)
+{
+	struct ocelot *ocelot = port->ocelot;
+	struct netdev_hw_addr *ha, *n;
+
+	/* Free and forget all the MAC addresses stored in the port private mc
+	 * list. These are mc addresses that were previously added by calling
+	 * ocelot_mact_mc_add().
+	 */
+	list_for_each_entry_safe(ha, n, &port->mc, list) {
+		ocelot_mact_forget(ocelot, ha->addr, port->pvid);
+		list_del(&ha->list);
+		kfree(ha);
+	}
+}
+
+static int ocelot_mact_mc_add(struct ocelot_port *port,
+			      struct netdev_hw_addr *hw_addr)
+{
+	struct ocelot *ocelot = port->ocelot;
+	struct netdev_hw_addr *ha = kzalloc(sizeof(*ha), GFP_KERNEL);
+
+	if (!ha)
+		return -ENOMEM;
+
+	memcpy(ha, hw_addr, sizeof(*ha));
+	list_add_tail(&ha->list, &port->mc);
+
+	ocelot_mact_learn(ocelot, PGID_CPU, ha->addr, port->pvid,
+			  ENTRYTYPE_LOCKED);
+
+	return 0;
+}
+
+static void ocelot_set_rx_mode(struct net_device *dev)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	struct netdev_hw_addr *ha;
+	int i;
+	u32 val;
+
+	/* 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);
+
+	/* Handle the device multicast addresses. First remove all the
+	 * previously installed addresses and then add the latest ones to the
+	 * mac table.
+	 */
+	ocelot_mact_mc_reset(port);
+	netdev_for_each_mc_addr(ha, dev)
+		ocelot_mact_mc_add(port, ha);
+}
+
+static int ocelot_port_get_phys_port_name(struct net_device *dev,
+					  char *buf, size_t len)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	int ret;
+
+	ret = snprintf(buf, len, "p%d", port->chip_port);
+	if (ret >= len)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct 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, port->pvid,
+			  ENTRYTYPE_LOCKED);
+	/* Then forget the previous one. */
+	ocelot_mact_forget(ocelot, dev->dev_addr, 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 *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+
+	/* Configure the port to read the stats from */
+	ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port->chip_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_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
+			  struct net_device *dev, const unsigned char *addr,
+			  u16 vid, u16 flags)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+
+	return ocelot_mact_learn(ocelot, port->chip_port, addr, vid,
+				 ENTRYTYPE_NORMAL);
+}
+
+static int ocelot_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
+			  struct net_device *dev,
+			  const unsigned char *addr, u16 vid)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+
+	return ocelot_mact_forget(ocelot, addr, vid);
+}
+
+struct ocelot_dump_ctx {
+	struct net_device *dev;
+	struct sk_buff *skb;
+	struct netlink_callback *cb;
+	int idx;
+};
+
+static int ocelot_fdb_do_dump(struct ocelot_mact_entry *entry,
+			      struct ocelot_dump_ctx *dump)
+{
+	u32 portid = NETLINK_CB(dump->cb->skb).portid;
+	u32 seq = dump->cb->nlh->nlmsg_seq;
+	struct nlmsghdr *nlh;
+	struct ndmsg *ndm;
+
+	if (dump->idx < dump->cb->args[2])
+		goto skip;
+
+	nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
+			sizeof(*ndm), NLM_F_MULTI);
+	if (!nlh)
+		return -EMSGSIZE;
+
+	ndm = nlmsg_data(nlh);
+	ndm->ndm_family  = AF_BRIDGE;
+	ndm->ndm_pad1    = 0;
+	ndm->ndm_pad2    = 0;
+	ndm->ndm_flags   = NTF_SELF;
+	ndm->ndm_type    = 0;
+	ndm->ndm_ifindex = dump->dev->ifindex;
+	ndm->ndm_state   = NUD_REACHABLE;
+
+	if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac))
+		goto nla_put_failure;
+
+	if (entry->vid && nla_put_u16(dump->skb, NDA_VLAN, entry->vid))
+		goto nla_put_failure;
+
+	nlmsg_end(dump->skb, nlh);
+
+skip:
+	dump->idx++;
+	return 0;
+
+nla_put_failure:
+	nlmsg_cancel(dump->skb, nlh);
+	return -EMSGSIZE;
+}
+
+static inline int ocelot_mact_read(struct ocelot_port *port, int row, int col,
+				   struct ocelot_mact_entry *entry)
+{
+	struct ocelot *ocelot = port->ocelot;
+	char mac[ETH_ALEN];
+	u32 val, dst, macl, mach;
+
+	/* Set row and column to read from */
+	ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
+	ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
+
+	/* Issue a read command */
+	ocelot_write(ocelot,
+		     ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
+		     ANA_TABLES_MACACCESS);
+
+	if (ocelot_mact_wait_for_completion(ocelot))
+		return -ETIMEDOUT;
+
+	/* Read the entry flags */
+	val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
+	if (!(val & ANA_TABLES_MACACCESS_VALID))
+		return -EINVAL;
+
+	/* If the entry read has another port configured as its destination,
+	 * do not report it.
+	 */
+	dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
+	if (dst != port->chip_port)
+		return -EINVAL;
+
+	/* Get the entry's MAC address and VLAN id */
+	macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA);
+	mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA);
+
+	mac[0] = (mach >> 8)  & 0xff;
+	mac[1] = (mach >> 0)  & 0xff;
+	mac[2] = (macl >> 24) & 0xff;
+	mac[3] = (macl >> 16) & 0xff;
+	mac[4] = (macl >> 8)  & 0xff;
+	mac[5] = (macl >> 0)  & 0xff;
+
+	entry->vid = (mach >> 16) & 0xfff;
+	ether_addr_copy(entry->mac, mac);
+
+	return 0;
+}
+
+static int ocelot_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
+			   struct net_device *dev,
+			   struct net_device *filter_dev, int *idx)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	int i, j, ret = 0;
+	struct ocelot_dump_ctx dump = {
+		.dev = dev,
+		.skb = skb,
+		.cb = cb,
+		.idx = *idx,
+	};
+
+	struct ocelot_mact_entry entry;
+
+	/* Loop through all the mac tables entries. There are 1024 rows of 4
+	 * entries.
+	 */
+	for (i = 0; i < 1024; i++) {
+		for (j = 0; j < 4; j++) {
+			ret = ocelot_mact_read(port, i, j, &entry);
+			/* If the entry is invalid (wrong port, invalid...),
+			 * skip it.
+			 */
+			if (ret == -EINVAL)
+				continue;
+			else if (ret)
+				goto end;
+
+			ret = ocelot_fdb_do_dump(&entry, &dump);
+			if (ret)
+				goto end;
+		}
+	}
+
+end:
+	*idx = dump.idx;
+	return ret;
+}
+
+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_fdb_add,
+	.ndo_fdb_del			= ocelot_fdb_del,
+	.ndo_fdb_dump			= ocelot_fdb_dump,
+};
+
+static void ocelot_get_strings(struct net_device *netdev, u32 sset, u8 *data)
+{
+	struct ocelot_port *port = netdev_priv(netdev);
+	struct ocelot *ocelot = port->ocelot;
+	int i;
+
+	if (sset != ETH_SS_STATS)
+		return;
+
+	for (i = 0; i < ocelot->num_stats; i++)
+		memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name,
+		       ETH_GSTRING_LEN);
+}
+
+static void ocelot_check_stats(struct work_struct *work)
+{
+	struct delayed_work *del_work = to_delayed_work(work);
+	struct ocelot *ocelot = container_of(del_work, struct ocelot, stats_work);
+	int i, j;
+
+	mutex_lock(&ocelot->stats_lock);
+
+	for (i = 0; i < ocelot->num_phys_ports; i++) {
+		/* Configure the port to read the stats from */
+		ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(i), SYS_STAT_CFG);
+
+		for (j = 0; j < ocelot->num_stats; j++) {
+			u32 val;
+			unsigned int idx = i * ocelot->num_stats + j;
+
+			val = ocelot_read_rix(ocelot, SYS_COUNT_RX_OCTETS,
+					      ocelot->stats_layout[j].offset);
+
+			if (val < (ocelot->stats[idx] & U32_MAX))
+				ocelot->stats[idx] += (u64)1 << 32;
+
+			ocelot->stats[idx] = (ocelot->stats[idx] &
+					      ~(u64)U32_MAX) + val;
+		}
+	}
+
+	cancel_delayed_work(&ocelot->stats_work);
+	queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
+			   OCELOT_STATS_CHECK_DELAY);
+
+	mutex_unlock(&ocelot->stats_lock);
+}
+
+static void ocelot_get_ethtool_stats(struct net_device *dev,
+				     struct ethtool_stats *stats, u64 *data)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	int i;
+
+	/* check and update now */
+	ocelot_check_stats(&ocelot->stats_work.work);
+
+	/* Copy all counters */
+	for (i = 0; i < ocelot->num_stats; i++)
+		*data++ = ocelot->stats[port->chip_port * ocelot->num_stats + i];
+}
+
+static int ocelot_get_sset_count(struct net_device *dev, int sset)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+
+	if (sset != ETH_SS_STATS)
+		return -EOPNOTSUPP;
+	return ocelot->num_stats;
+}
+
+static const struct ethtool_ops ocelot_ethtool_ops = {
+	.get_strings		= ocelot_get_strings,
+	.get_ethtool_stats	= ocelot_get_ethtool_stats,
+	.get_sset_count		= ocelot_get_sset_count,
+};
+
+static int ocelot_port_attr_get(struct net_device *dev,
+				struct switchdev_attr *attr)
+{
+	struct ocelot_port *ocelot_port = netdev_priv(dev);
+	struct ocelot *ocelot = ocelot_port->ocelot;
+
+	switch (attr->id) {
+	case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
+		attr->u.ppid.id_len = sizeof(ocelot->base_mac);
+		memcpy(&attr->u.ppid.id, &ocelot->base_mac,
+		       attr->u.ppid.id_len);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int ocelot_port_attr_stp_state_set(struct ocelot_port *ocelot_port,
+					  struct switchdev_trans *trans,
+					  u8 state)
+{
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	u32 port_cfg;
+	int port, i;
+
+	if (switchdev_trans_ph_prepare(trans))
+		return 0;
+
+	if (!(BIT(ocelot_port->chip_port) & ocelot->bridge_mask))
+		return 0;
+
+	port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG,
+				   ocelot_port->chip_port);
+
+	switch (state) {
+	case BR_STATE_FORWARDING:
+		ocelot->bridge_fwd_mask |= BIT(ocelot_port->chip_port);
+		/* Fallthrough */
+	case BR_STATE_LEARNING:
+		port_cfg |= ANA_PORT_PORT_CFG_LEARN_ENA;
+		break;
+
+	default:
+		port_cfg &= ~ANA_PORT_PORT_CFG_LEARN_ENA;
+		ocelot->bridge_fwd_mask &= ~BIT(ocelot_port->chip_port);
+		break;
+	}
+
+	ocelot_write_gix(ocelot, port_cfg, ANA_PORT_PORT_CFG,
+			 ocelot_port->chip_port);
+
+	/* Apply FWD mask. The loop is needed to add/remove the current port as
+	 * a source for the other ports.
+	 */
+	for (port = 0; port < ocelot->num_phys_ports; port++) {
+		if (ocelot->bridge_fwd_mask & BIT(port)) {
+			unsigned long mask = ocelot->bridge_fwd_mask & ~BIT(port);
+
+			for (i = 0; i < ocelot->num_phys_ports; i++) {
+				unsigned long bond_mask = ocelot->lags[i];
+
+				if (!bond_mask)
+					continue;
+
+				if (bond_mask & BIT(port)) {
+					mask &= ~bond_mask;
+					break;
+				}
+			}
+
+			ocelot_write_rix(ocelot,
+					 BIT(ocelot->num_phys_ports) | mask,
+					 ANA_PGID_PGID, PGID_SRC + port);
+		} else {
+			/* Only the CPU port, this is compatible with link
+			 * aggregation.
+			 */
+			ocelot_write_rix(ocelot,
+					 BIT(ocelot->num_phys_ports),
+					 ANA_PGID_PGID, PGID_SRC + port);
+		}
+	}
+
+	return 0;
+}
+
+static void ocelot_port_attr_ageing_set(struct ocelot_port *ocelot_port,
+					unsigned long ageing_clock_t)
+{
+	struct ocelot *ocelot = ocelot_port->ocelot;
+	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
+	u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
+
+	ocelot_write(ocelot, ANA_AUTOAGE_AGE_PERIOD(ageing_time / 2),
+		     ANA_AUTOAGE);
+}
+
+static void ocelot_port_attr_mc_set(struct ocelot_port *port, bool mc)
+{
+	struct ocelot *ocelot = port->ocelot;
+	u32 val = ocelot_read_gix(ocelot, ANA_PORT_CPU_FWD_CFG,
+				  port->chip_port);
+
+	if (mc)
+		val |= 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;
+	else
+		val &= ~(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);
+
+	ocelot_write_gix(ocelot, val, ANA_PORT_CPU_FWD_CFG, port->chip_port);
+}
+
+static int ocelot_port_attr_set(struct net_device *dev,
+				const struct switchdev_attr *attr,
+				struct switchdev_trans *trans)
+{
+	struct ocelot_port *ocelot_port = netdev_priv(dev);
+	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_MC_DISABLED:
+		ocelot_port_attr_mc_set(ocelot_port, !attr->u.mc_disabled);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot,
+						     const unsigned char *addr,
+						     u16 vid)
+{
+	struct ocelot_multicast *mc;
+
+	list_for_each_entry(mc, &ocelot->multicast, list) {
+		if (ether_addr_equal(mc->addr, addr) && mc->vid == vid)
+			return mc;
+	}
+
+	return NULL;
+}
+
+static int ocelot_port_obj_add_mdb(struct net_device *dev,
+				   const struct switchdev_obj_port_mdb *mdb,
+				   struct switchdev_trans *trans)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	struct ocelot_multicast *mc;
+	unsigned char addr[ETH_ALEN];
+	u16 vid = mdb->vid;
+	bool new = false;
+
+	if (!vid)
+		vid = 1;
+
+	mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
+	if (!mc) {
+		mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL);
+		if (!mc)
+			return -ENOMEM;
+
+		memcpy(mc->addr, mdb->addr, ETH_ALEN);
+		mc->vid = vid;
+
+		list_add_tail(&mc->list, &ocelot->multicast);
+		new = true;
+	}
+
+	memcpy(addr, mc->addr, ETH_ALEN);
+	addr[0] = 0;
+
+	if (!new) {
+		addr[2] = mc->ports << 0;
+		addr[1] = mc->ports << 8;
+		ocelot_mact_forget(ocelot, addr, vid);
+	}
+
+	mc->ports |= BIT(port->chip_port);
+	addr[2] = mc->ports << 0;
+	addr[1] = mc->ports << 8;
+
+	return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4);
+}
+
+static int ocelot_port_obj_del_mdb(struct net_device *dev,
+				   const struct switchdev_obj_port_mdb *mdb)
+{
+	struct ocelot_port *port = netdev_priv(dev);
+	struct ocelot *ocelot = port->ocelot;
+	struct ocelot_multicast *mc;
+	unsigned char addr[ETH_ALEN];
+	u16 vid = mdb->vid;
+
+	if (!vid)
+		vid = 1;
+
+	mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
+	if (!mc)
+		return -ENOENT;
+
+	memcpy(addr, mc->addr, ETH_ALEN);
+	addr[2] = mc->ports << 0;
+	addr[1] = mc->ports << 8;
+	addr[0] = 0;
+	ocelot_mact_forget(ocelot, addr, vid);
+
+	mc->ports &= ~BIT(port->chip_port);
+	if (!mc->ports) {
+		list_del(&mc->list);
+		devm_kfree(ocelot->dev, mc);
+		return 0;
+	}
+
+	addr[2] = mc->ports << 0;
+	addr[1] = mc->ports << 8;
+
+	return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4);
+}
+
+static int ocelot_port_obj_add(struct net_device *dev,
+			       const struct switchdev_obj *obj,
+			       struct switchdev_trans *trans)
+{
+	int ret = 0;
+
+	switch (obj->id) {
+	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_MDB:
+		ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return ret;
+}
+
+static const struct switchdev_ops ocelot_port_switchdev_ops = {
+	.switchdev_port_attr_get	= ocelot_port_attr_get,
+	.switchdev_port_attr_set	= ocelot_port_attr_set,
+	.switchdev_port_obj_add		= ocelot_port_obj_add,
+	.switchdev_port_obj_del		= ocelot_port_obj_del,
+};
+
+static int ocelot_port_bridge_join(struct ocelot_port *ocelot_port,
+				   struct net_device *bridge)
+{
+	struct ocelot *ocelot = ocelot_port->ocelot;
+
+	if (!ocelot->bridge_mask) {
+		ocelot->hw_bridge_dev = bridge;
+	} else {
+		if (ocelot->hw_bridge_dev != bridge)
+			/* This is adding the port to a second bridge, this is
+			 * unsupported */
+			return -ENODEV;
+	}
+
+	ocelot->bridge_mask |= BIT(ocelot_port->chip_port);
+
+	return 0;
+}
+
+static void ocelot_port_bridge_leave(struct ocelot_port *ocelot_port,
+				     struct net_device *bridge)
+{
+	struct ocelot *ocelot = ocelot_port->ocelot;
+
+	ocelot->bridge_mask &= ~BIT(ocelot_port->chip_port);
+
+	if (!ocelot->bridge_mask)
+		ocelot->hw_bridge_dev = NULL;
+}
+
+/* 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 *ocelot_port = netdev_priv(dev);
+	int err = 0;
+
+	if (!ocelot_netdevice_dev_check(dev))
+		return 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
+				ocelot_port_bridge_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;
+
+	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);
+
+int ocelot_probe_port(struct ocelot *ocelot, u8 port,
+		      void __iomem *regs,
+		      struct phy_device *phy)
+{
+	struct ocelot_port *ocelot_port;
+	struct net_device *dev;
+	int err;
+
+	dev = alloc_etherdev(sizeof(struct ocelot_port));
+	if (!dev)
+		return -ENOMEM;
+	SET_NETDEV_DEV(dev, ocelot->dev);
+	ocelot_port = netdev_priv(dev);
+	ocelot_port->dev = dev;
+	ocelot_port->ocelot = ocelot;
+	ocelot_port->regs = regs;
+	ocelot_port->chip_port = port;
+	ocelot_port->phy = phy;
+	INIT_LIST_HEAD(&ocelot_port->mc);
+	ocelot->ports[port] = ocelot_port;
+
+	dev->netdev_ops = &ocelot_port_netdev_ops;
+	dev->ethtool_ops = &ocelot_ethtool_ops;
+	dev->switchdev_ops = &ocelot_port_switchdev_ops;
+
+	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);
+
+	err = register_netdev(dev);
+	if (err) {
+		dev_err(ocelot->dev, "register_netdev failed\n");
+		goto err_register_netdev;
+	}
+
+	return 0;
+
+err_register_netdev:
+	free_netdev(dev);
+	return err;
+}
+EXPORT_SYMBOL(ocelot_probe_port);
+
+int ocelot_init(struct ocelot *ocelot)
+{
+	u32 port;
+	int i, cpu = ocelot->num_phys_ports;
+	char queue_name[32];
+
+	ocelot->stats = devm_kcalloc(ocelot->dev,
+				     ocelot->num_phys_ports * ocelot->num_stats,
+				     sizeof(u64), GFP_KERNEL);
+	if (!ocelot->stats)
+		return -ENOMEM;
+
+	mutex_init(&ocelot->stats_lock);
+	snprintf(queue_name, sizeof(queue_name), "%s-stats",
+		 dev_name(ocelot->dev));
+	ocelot->stats_queue = create_singlethread_workqueue(queue_name);
+	if (!ocelot->stats_queue)
+		return -ENOMEM;
+
+	ocelot_mact_init(ocelot);
+	ocelot_vlan_init(ocelot);
+
+	for (port = 0; port < ocelot->num_phys_ports; port++) {
+		/* Clear all counters (5 groups) */
+		ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) |
+				     SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f),
+			     SYS_STAT_CFG);
+	}
+
+	/* Only use S-Tag */
+	ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG);
+
+	/* Aggregation mode */
+	ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA |
+			     ANA_AGGR_CFG_AC_DMAC_ENA |
+			     ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA |
+			     ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, ANA_AGGR_CFG);
+
+	/* Set MAC age time to default value. The entry is aged after
+	 * 2*AGE_PERIOD
+	 */
+	ocelot_write(ocelot,
+		     ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ),
+		     ANA_AUTOAGE);
+
+	/* Disable learning for frames discarded by VLAN ingress filtering */
+	regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1);
+
+	/* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */
+	ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA |
+		     SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING);
+
+	/* Setup flooding PGIDs */
+	ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) |
+			 ANA_FLOODING_FLD_BROADCAST(PGID_MC) |
+			 ANA_FLOODING_FLD_UNICAST(PGID_UC),
+			 ANA_FLOODING, 0);
+	ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) |
+		     ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) |
+		     ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) |
+		     ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC),
+		     ANA_FLOODING_IPMC);
+
+	for (port = 0; port < ocelot->num_phys_ports; port++) {
+		/* Transmit the frame to the local port. */
+		ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
+		/* Do not forward BPDU frames to the front ports. */
+		ocelot_write_gix(ocelot,
+				 ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff),
+				 ANA_PORT_CPU_FWD_BPDU_CFG,
+				 port);
+		/* Ensure bridging is disabled */
+		ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port);
+	}
+
+	/* Configure and enable the CPU port. */
+	ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu);
+	ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU);
+	ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA |
+			 ANA_PORT_PORT_CFG_PORTID_VAL(cpu),
+			 ANA_PORT_PORT_CFG, cpu);
+
+	/* Allow broadcast MAC frames. */
+	for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++) {
+		u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0));
+
+		ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
+	}
+	ocelot_write_rix(ocelot,
+			 ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)),
+			 ANA_PGID_PGID, PGID_MC);
+	ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4);
+	ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6);
+
+	/* CPU port Injection/Extraction configuration */
+	ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
+			 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
+			 QSYS_SWITCH_PORT_MODE_PORT_ENA,
+			 QSYS_SWITCH_PORT_MODE, cpu);
+	ocelot_write_rix(ocelot, SYS_PORT_MODE_INCL_XTR_HDR(1) |
+			 SYS_PORT_MODE_INCL_INJ_HDR(1), SYS_PORT_MODE, cpu);
+	/* Allow manual injection via DEVCPU_QS registers, and byte swap these
+	 * registers endianness.
+	 */
+	ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP |
+			 QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0);
+	ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP |
+			 QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0);
+	ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) |
+		     ANA_CPUQ_CFG_CPUQ_LRN(2) |
+		     ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) |
+		     ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) |
+		     ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) |
+		     ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) |
+		     ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) |
+		     ANA_CPUQ_CFG_CPUQ_IGMP(6) |
+		     ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG);
+	for (i = 0; i < 16; i++)
+		ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) |
+				 ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6),
+				 ANA_CPUQ_8021_CFG, i);
+
+	INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats);
+	queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
+			   OCELOT_STATS_CHECK_DELAY);
+	return 0;
+}
+EXPORT_SYMBOL(ocelot_init);
+
+void ocelot_deinit(struct ocelot *ocelot)
+{
+	destroy_workqueue(ocelot->stats_queue);
+	mutex_destroy(&ocelot->stats_lock);
+}
+EXPORT_SYMBOL(ocelot_deinit);
+
+MODULE_LICENSE("Dual MIT/GPL");