// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Marvell 88e6xxx Ethernet switch single-chip support
 *
 * Copyright (c) 2008 Marvell Semiconductor
 *
 * Copyright (c) 2016 Andrew Lunn <andrew@lunn.ch>
 *
 * Copyright (c) 2016-2017 Savoir-faire Linux Inc.
 *      Vivien Didelot <vivien.didelot@savoirfairelinux.com>
 */

#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/if_bridge.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/jiffies.h>
#include <linux/list.h>
#include <linux/mdio.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/of_mdio.h>
#include <linux/platform_data/mv88e6xxx.h>
#include <linux/netdevice.h>
#include <linux/gpio/consumer.h>
#include <linux/phy.h>
#include <linux/phylink.h>
#include <net/dsa.h>

#include "chip.h"
#include "global1.h"
#include "global2.h"
#include "hwtstamp.h"
#include "phy.h"
#include "port.h"
#include "ptp.h"
#include "serdes.h"
#include "smi.h"

static void assert_reg_lock(struct mv88e6xxx_chip *chip)
{
        if (unlikely(!mutex_is_locked(&chip->reg_lock))) {
                dev_err(chip->dev, "Switch registers lock not held!\n");
                dump_stack();
        }
}

int mv88e6xxx_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val)
{
        int err;

        assert_reg_lock(chip);

        err = mv88e6xxx_smi_read(chip, addr, reg, val);
        if (err)
                return err;

        dev_dbg(chip->dev, "<- addr: 0x%.2x reg: 0x%.2x val: 0x%.4x\n",
                addr, reg, *val);

        return 0;
}

int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val)
{
        int err;

        assert_reg_lock(chip);

        err = mv88e6xxx_smi_write(chip, addr, reg, val);
        if (err)
                return err;

        dev_dbg(chip->dev, "-> addr: 0x%.2x reg: 0x%.2x val: 0x%.4x\n",
                addr, reg, val);

        return 0;
}

struct mii_bus *mv88e6xxx_default_mdio_bus(struct mv88e6xxx_chip *chip)
{
        struct mv88e6xxx_mdio_bus *mdio_bus;

        mdio_bus = list_first_entry(&chip->mdios, struct mv88e6xxx_mdio_bus,
                                    list);
        if (!mdio_bus)
                return NULL;

        return mdio_bus->bus;
}

static void mv88e6xxx_g1_irq_mask(struct irq_data *d)
{
        struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
        unsigned int n = d->hwirq;

        chip->g1_irq.masked |= (1 << n);
}

static void mv88e6xxx_g1_irq_unmask(struct irq_data *d)
{
        struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
        unsigned int n = d->hwirq;

        chip->g1_irq.masked &= ~(1 << n);
}

static irqreturn_t mv88e6xxx_g1_irq_thread_work(struct mv88e6xxx_chip *chip)
{
        unsigned int nhandled = 0;
        unsigned int sub_irq;
        unsigned int n;
        u16 reg;
        u16 ctl1;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &reg);
        mutex_unlock(&chip->reg_lock);

        if (err)
                goto out;

        do {
                for (n = 0; n < chip->g1_irq.nirqs; ++n) {
                        if (reg & (1 << n)) {
                                sub_irq = irq_find_mapping(chip->g1_irq.domain,
                                                           n);
                                handle_nested_irq(sub_irq);
                                ++nhandled;
                        }
                }

                mutex_lock(&chip->reg_lock);
                err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &ctl1);
                if (err)
                        goto unlock;
                err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &reg);
unlock:
                mutex_unlock(&chip->reg_lock);
                if (err)
                        goto out;
                ctl1 &= GENMASK(chip->g1_irq.nirqs, 0);
        } while (reg & ctl1);

out:
        return (nhandled > 0 ? IRQ_HANDLED : IRQ_NONE);
}

static irqreturn_t mv88e6xxx_g1_irq_thread_fn(int irq, void *dev_id)
{
        struct mv88e6xxx_chip *chip = dev_id;

        return mv88e6xxx_g1_irq_thread_work(chip);
}

static void mv88e6xxx_g1_irq_bus_lock(struct irq_data *d)
{
        struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);

        mutex_lock(&chip->reg_lock);
}

static void mv88e6xxx_g1_irq_bus_sync_unlock(struct irq_data *d)
{
        struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
        u16 mask = GENMASK(chip->g1_irq.nirqs, 0);
        u16 reg;
        int err;

        err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &reg);
        if (err)
                goto out;

        reg &= ~mask;
        reg |= (~chip->g1_irq.masked & mask);

        err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, reg);
        if (err)
                goto out;

out:
        mutex_unlock(&chip->reg_lock);
}

static const struct irq_chip mv88e6xxx_g1_irq_chip = {
        .name                   = "mv88e6xxx-g1",
        .irq_mask               = mv88e6xxx_g1_irq_mask,
        .irq_unmask             = mv88e6xxx_g1_irq_unmask,
        .irq_bus_lock           = mv88e6xxx_g1_irq_bus_lock,
        .irq_bus_sync_unlock    = mv88e6xxx_g1_irq_bus_sync_unlock,
};

static int mv88e6xxx_g1_irq_domain_map(struct irq_domain *d,
                                       unsigned int irq,
                                       irq_hw_number_t hwirq)
{
        struct mv88e6xxx_chip *chip = d->host_data;

        irq_set_chip_data(irq, d->host_data);
        irq_set_chip_and_handler(irq, &chip->g1_irq.chip, handle_level_irq);
        irq_set_noprobe(irq);

        return 0;
}

static const struct irq_domain_ops mv88e6xxx_g1_irq_domain_ops = {
        .map    = mv88e6xxx_g1_irq_domain_map,
        .xlate  = irq_domain_xlate_twocell,
};

/* To be called with reg_lock held */
static void mv88e6xxx_g1_irq_free_common(struct mv88e6xxx_chip *chip)
{
        int irq, virq;
        u16 mask;

        mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &mask);
        mask &= ~GENMASK(chip->g1_irq.nirqs, 0);
        mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, mask);

        for (irq = 0; irq < chip->g1_irq.nirqs; irq++) {
                virq = irq_find_mapping(chip->g1_irq.domain, irq);
                irq_dispose_mapping(virq);
        }

        irq_domain_remove(chip->g1_irq.domain);
}

static void mv88e6xxx_g1_irq_free(struct mv88e6xxx_chip *chip)
{
        /*
         * free_irq must be called without reg_lock taken because the irq
         * handler takes this lock, too.
         */
        free_irq(chip->irq, chip);

        mutex_lock(&chip->reg_lock);
        mv88e6xxx_g1_irq_free_common(chip);
        mutex_unlock(&chip->reg_lock);
}

static int mv88e6xxx_g1_irq_setup_common(struct mv88e6xxx_chip *chip)
{
        int err, irq, virq;
        u16 reg, mask;

        chip->g1_irq.nirqs = chip->info->g1_irqs;
        chip->g1_irq.domain = irq_domain_add_simple(
                NULL, chip->g1_irq.nirqs, 0,
                &mv88e6xxx_g1_irq_domain_ops, chip);
        if (!chip->g1_irq.domain)
                return -ENOMEM;

        for (irq = 0; irq < chip->g1_irq.nirqs; irq++)
                irq_create_mapping(chip->g1_irq.domain, irq);

        chip->g1_irq.chip = mv88e6xxx_g1_irq_chip;
        chip->g1_irq.masked = ~0;

        err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &mask);
        if (err)
                goto out_mapping;

        mask &= ~GENMASK(chip->g1_irq.nirqs, 0);

        err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, mask);
        if (err)
                goto out_disable;

        /* Reading the interrupt status clears (most of) them */
        err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &reg);
        if (err)
                goto out_disable;

        return 0;

out_disable:
        mask &= ~GENMASK(chip->g1_irq.nirqs, 0);
        mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, mask);

out_mapping:
        for (irq = 0; irq < 16; irq++) {
                virq = irq_find_mapping(chip->g1_irq.domain, irq);
                irq_dispose_mapping(virq);
        }

        irq_domain_remove(chip->g1_irq.domain);

        return err;
}

static int mv88e6xxx_g1_irq_setup(struct mv88e6xxx_chip *chip)
{
        static struct lock_class_key lock_key;
        static struct lock_class_key request_key;
        int err;

        err = mv88e6xxx_g1_irq_setup_common(chip);
        if (err)
                return err;

        /* These lock classes tells lockdep that global 1 irqs are in
         * a different category than their parent GPIO, so it won't
         * report false recursion.
         */
        irq_set_lockdep_class(chip->irq, &lock_key, &request_key);

        mutex_unlock(&chip->reg_lock);
        err = request_threaded_irq(chip->irq, NULL,
                                   mv88e6xxx_g1_irq_thread_fn,
                                   IRQF_ONESHOT | IRQF_SHARED,
                                   dev_name(chip->dev), chip);
        mutex_lock(&chip->reg_lock);
        if (err)
                mv88e6xxx_g1_irq_free_common(chip);

        return err;
}

static void mv88e6xxx_irq_poll(struct kthread_work *work)
{
        struct mv88e6xxx_chip *chip = container_of(work,
                                                   struct mv88e6xxx_chip,
                                                   irq_poll_work.work);
        mv88e6xxx_g1_irq_thread_work(chip);

        kthread_queue_delayed_work(chip->kworker, &chip->irq_poll_work,
                                   msecs_to_jiffies(100));
}

static int mv88e6xxx_irq_poll_setup(struct mv88e6xxx_chip *chip)
{
        int err;

        err = mv88e6xxx_g1_irq_setup_common(chip);
        if (err)
                return err;

        kthread_init_delayed_work(&chip->irq_poll_work,
                                  mv88e6xxx_irq_poll);

        chip->kworker = kthread_create_worker(0, "%s", dev_name(chip->dev));
        if (IS_ERR(chip->kworker))
                return PTR_ERR(chip->kworker);

        kthread_queue_delayed_work(chip->kworker, &chip->irq_poll_work,
                                   msecs_to_jiffies(100));

        return 0;
}

static void mv88e6xxx_irq_poll_free(struct mv88e6xxx_chip *chip)
{
        kthread_cancel_delayed_work_sync(&chip->irq_poll_work);
        kthread_destroy_worker(chip->kworker);

        mutex_lock(&chip->reg_lock);
        mv88e6xxx_g1_irq_free_common(chip);
        mutex_unlock(&chip->reg_lock);
}

int mv88e6xxx_wait(struct mv88e6xxx_chip *chip, int addr, int reg, u16 mask)
{
        int i;

        for (i = 0; i < 16; i++) {
                u16 val;
                int err;

                err = mv88e6xxx_read(chip, addr, reg, &val);
                if (err)
                        return err;

                if (!(val & mask))
                        return 0;

                usleep_range(1000, 2000);
        }

        dev_err(chip->dev, "Timeout while waiting for switch\n");
        return -ETIMEDOUT;
}

/* Indirect write to single pointer-data register with an Update bit */
int mv88e6xxx_update(struct mv88e6xxx_chip *chip, int addr, int reg, u16 update)
{
        u16 val;
        int err;

        /* Wait until the previous operation is completed */
        err = mv88e6xxx_wait(chip, addr, reg, BIT(15));
        if (err)
                return err;

        /* Set the Update bit to trigger a write operation */
        val = BIT(15) | update;

        return mv88e6xxx_write(chip, addr, reg, val);
}

int mv88e6xxx_port_setup_mac(struct mv88e6xxx_chip *chip, int port, int link,
                             int speed, int duplex, int pause,
                             phy_interface_t mode)
{
        struct phylink_link_state state;
        int err;

        if (!chip->info->ops->port_set_link)
                return 0;

        if (!chip->info->ops->port_link_state)
                return 0;

        err = chip->info->ops->port_link_state(chip, port, &state);
        if (err)
                return err;

        /* Has anything actually changed? We don't expect the
         * interface mode to change without one of the other
         * parameters also changing
         */
        if (state.link == link &&
            state.speed == speed &&
            state.duplex == duplex)
                return 0;

        /* Port's MAC control must not be changed unless the link is down */
        err = chip->info->ops->port_set_link(chip, port, 0);
        if (err)
                return err;

        if (chip->info->ops->port_set_speed) {
                err = chip->info->ops->port_set_speed(chip, port, speed);
                if (err && err != -EOPNOTSUPP)
                        goto restore_link;
        }

        if (speed == SPEED_MAX && chip->info->ops->port_max_speed_mode)
                mode = chip->info->ops->port_max_speed_mode(port);

        if (chip->info->ops->port_set_pause) {
                err = chip->info->ops->port_set_pause(chip, port, pause);
                if (err)
                        goto restore_link;
        }

        if (chip->info->ops->port_set_duplex) {
                err = chip->info->ops->port_set_duplex(chip, port, duplex);
                if (err && err != -EOPNOTSUPP)
                        goto restore_link;
        }

        if (chip->info->ops->port_set_rgmii_delay) {
                err = chip->info->ops->port_set_rgmii_delay(chip, port, mode);
                if (err && err != -EOPNOTSUPP)
                        goto restore_link;
        }

        if (chip->info->ops->port_set_cmode) {
                err = chip->info->ops->port_set_cmode(chip, port, mode);
                if (err && err != -EOPNOTSUPP)
                        goto restore_link;
        }

        err = 0;
restore_link:
        if (chip->info->ops->port_set_link(chip, port, link))
                dev_err(chip->dev, "p%d: failed to restore MAC's link\n", port);

        return err;
}

static int mv88e6xxx_phy_is_internal(struct dsa_switch *ds, int port)
{
        struct mv88e6xxx_chip *chip = ds->priv;

        return port < chip->info->num_internal_phys;
}

/* We expect the switch to perform auto negotiation if there is a real
 * phy. However, in the case of a fixed link phy, we force the port
 * settings from the fixed link settings.
 */
static void mv88e6xxx_adjust_link(struct dsa_switch *ds, int port,
                                  struct phy_device *phydev)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        if (!phy_is_pseudo_fixed_link(phydev) &&
            mv88e6xxx_phy_is_internal(ds, port))
                return;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_setup_mac(chip, port, phydev->link, phydev->speed,
                                       phydev->duplex, phydev->pause,
                                       phydev->interface);
        mutex_unlock(&chip->reg_lock);

        if (err && err != -EOPNOTSUPP)
                dev_err(ds->dev, "p%d: failed to configure MAC\n", port);
}

static void mv88e6065_phylink_validate(struct mv88e6xxx_chip *chip, int port,
                                       unsigned long *mask,
                                       struct phylink_link_state *state)
{
        if (!phy_interface_mode_is_8023z(state->interface)) {
                /* 10M and 100M are only supported in non-802.3z mode */
                phylink_set(mask, 10baseT_Half);
                phylink_set(mask, 10baseT_Full);
                phylink_set(mask, 100baseT_Half);
                phylink_set(mask, 100baseT_Full);
        }
}

static void mv88e6185_phylink_validate(struct mv88e6xxx_chip *chip, int port,
                                       unsigned long *mask,
                                       struct phylink_link_state *state)
{
        /* FIXME: if the port is in 1000Base-X mode, then it only supports
         * 1000M FD speeds.  In this case, CMODE will indicate 5.
         */
        phylink_set(mask, 1000baseT_Full);
        phylink_set(mask, 1000baseX_Full);

        mv88e6065_phylink_validate(chip, port, mask, state);
}

static void mv88e6341_phylink_validate(struct mv88e6xxx_chip *chip, int port,
                                       unsigned long *mask,
                                       struct phylink_link_state *state)
{
        if (port >= 5)
                phylink_set(mask, 2500baseX_Full);

        /* No ethtool bits for 200Mbps */
        phylink_set(mask, 1000baseT_Full);
        phylink_set(mask, 1000baseX_Full);

        mv88e6065_phylink_validate(chip, port, mask, state);
}

static void mv88e6352_phylink_validate(struct mv88e6xxx_chip *chip, int port,
                                       unsigned long *mask,
                                       struct phylink_link_state *state)
{
        /* No ethtool bits for 200Mbps */
        phylink_set(mask, 1000baseT_Full);
        phylink_set(mask, 1000baseX_Full);

        mv88e6065_phylink_validate(chip, port, mask, state);
}

static void mv88e6390_phylink_validate(struct mv88e6xxx_chip *chip, int port,
                                       unsigned long *mask,
                                       struct phylink_link_state *state)
{
        if (port >= 9) {
                phylink_set(mask, 2500baseX_Full);
                phylink_set(mask, 2500baseT_Full);
        }

        /* No ethtool bits for 200Mbps */
        phylink_set(mask, 1000baseT_Full);
        phylink_set(mask, 1000baseX_Full);

        mv88e6065_phylink_validate(chip, port, mask, state);
}

static void mv88e6390x_phylink_validate(struct mv88e6xxx_chip *chip, int port,
                                        unsigned long *mask,
                                        struct phylink_link_state *state)
{
        if (port >= 9) {
                phylink_set(mask, 10000baseT_Full);
                phylink_set(mask, 10000baseKR_Full);
        }

        mv88e6390_phylink_validate(chip, port, mask, state);
}

static void mv88e6xxx_validate(struct dsa_switch *ds, int port,
                               unsigned long *supported,
                               struct phylink_link_state *state)
{
        __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
        struct mv88e6xxx_chip *chip = ds->priv;

        /* Allow all the expected bits */
        phylink_set(mask, Autoneg);
        phylink_set(mask, Pause);
        phylink_set_port_modes(mask);

        if (chip->info->ops->phylink_validate)
                chip->info->ops->phylink_validate(chip, port, mask, state);

        bitmap_and(supported, supported, mask, __ETHTOOL_LINK_MODE_MASK_NBITS);
        bitmap_and(state->advertising, state->advertising, mask,
                   __ETHTOOL_LINK_MODE_MASK_NBITS);

        /* We can only operate at 2500BaseX or 1000BaseX.  If requested
         * to advertise both, only report advertising at 2500BaseX.
         */
        phylink_helper_basex_speed(state);
}

static int mv88e6xxx_link_state(struct dsa_switch *ds, int port,
                                struct phylink_link_state *state)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        if (chip->info->ops->port_link_state)
                err = chip->info->ops->port_link_state(chip, port, state);
        else
                err = -EOPNOTSUPP;
        mutex_unlock(&chip->reg_lock);

        return err;
}

static void mv88e6xxx_mac_config(struct dsa_switch *ds, int port,
                                 unsigned int mode,
                                 const struct phylink_link_state *state)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int speed, duplex, link, pause, err;

        if ((mode == MLO_AN_PHY) && mv88e6xxx_phy_is_internal(ds, port))
                return;

        if (mode == MLO_AN_FIXED) {
                link = LINK_FORCED_UP;
                speed = state->speed;
                duplex = state->duplex;
        } else if (!mv88e6xxx_phy_is_internal(ds, port)) {
                link = state->link;
                speed = state->speed;
                duplex = state->duplex;
        } else {
                speed = SPEED_UNFORCED;
                duplex = DUPLEX_UNFORCED;
                link = LINK_UNFORCED;
        }
        pause = !!phylink_test(state->advertising, Pause);

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_setup_mac(chip, port, link, speed, duplex, pause,
                                       state->interface);
        mutex_unlock(&chip->reg_lock);

        if (err && err != -EOPNOTSUPP)
                dev_err(ds->dev, "p%d: failed to configure MAC\n", port);
}

static void mv88e6xxx_mac_link_force(struct dsa_switch *ds, int port, int link)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = chip->info->ops->port_set_link(chip, port, link);
        mutex_unlock(&chip->reg_lock);

        if (err)
                dev_err(chip->dev, "p%d: failed to force MAC link\n", port);
}

static void mv88e6xxx_mac_link_down(struct dsa_switch *ds, int port,
                                    unsigned int mode,
                                    phy_interface_t interface)
{
        if (mode == MLO_AN_FIXED)
                mv88e6xxx_mac_link_force(ds, port, LINK_FORCED_DOWN);
}

static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port,
                                  unsigned int mode, phy_interface_t interface,
                                  struct phy_device *phydev)
{
        if (mode == MLO_AN_FIXED)
                mv88e6xxx_mac_link_force(ds, port, LINK_FORCED_UP);
}

static int mv88e6xxx_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
{
        if (!chip->info->ops->stats_snapshot)
                return -EOPNOTSUPP;

        return chip->info->ops->stats_snapshot(chip, port);
}

static struct mv88e6xxx_hw_stat mv88e6xxx_hw_stats[] = {
        { "in_good_octets",             8, 0x00, STATS_TYPE_BANK0, },
        { "in_bad_octets",              4, 0x02, STATS_TYPE_BANK0, },
        { "in_unicast",                 4, 0x04, STATS_TYPE_BANK0, },
        { "in_broadcasts",              4, 0x06, STATS_TYPE_BANK0, },
        { "in_multicasts",              4, 0x07, STATS_TYPE_BANK0, },
        { "in_pause",                   4, 0x16, STATS_TYPE_BANK0, },
        { "in_undersize",               4, 0x18, STATS_TYPE_BANK0, },
        { "in_fragments",               4, 0x19, STATS_TYPE_BANK0, },
        { "in_oversize",                4, 0x1a, STATS_TYPE_BANK0, },
        { "in_jabber",                  4, 0x1b, STATS_TYPE_BANK0, },
        { "in_rx_error",                4, 0x1c, STATS_TYPE_BANK0, },
        { "in_fcs_error",               4, 0x1d, STATS_TYPE_BANK0, },
        { "out_octets",                 8, 0x0e, STATS_TYPE_BANK0, },
        { "out_unicast",                4, 0x10, STATS_TYPE_BANK0, },
        { "out_broadcasts",             4, 0x13, STATS_TYPE_BANK0, },
        { "out_multicasts",             4, 0x12, STATS_TYPE_BANK0, },
        { "out_pause",                  4, 0x15, STATS_TYPE_BANK0, },
        { "excessive",                  4, 0x11, STATS_TYPE_BANK0, },
        { "collisions",                 4, 0x1e, STATS_TYPE_BANK0, },
        { "deferred",                   4, 0x05, STATS_TYPE_BANK0, },
        { "single",                     4, 0x14, STATS_TYPE_BANK0, },
        { "multiple",                   4, 0x17, STATS_TYPE_BANK0, },
        { "out_fcs_error",              4, 0x03, STATS_TYPE_BANK0, },
        { "late",                       4, 0x1f, STATS_TYPE_BANK0, },
        { "hist_64bytes",               4, 0x08, STATS_TYPE_BANK0, },
        { "hist_65_127bytes",           4, 0x09, STATS_TYPE_BANK0, },
        { "hist_128_255bytes",          4, 0x0a, STATS_TYPE_BANK0, },
        { "hist_256_511bytes",          4, 0x0b, STATS_TYPE_BANK0, },
        { "hist_512_1023bytes",         4, 0x0c, STATS_TYPE_BANK0, },
        { "hist_1024_max_bytes",        4, 0x0d, STATS_TYPE_BANK0, },
        { "sw_in_discards",             4, 0x10, STATS_TYPE_PORT, },
        { "sw_in_filtered",             2, 0x12, STATS_TYPE_PORT, },
        { "sw_out_filtered",            2, 0x13, STATS_TYPE_PORT, },
        { "in_discards",                4, 0x00, STATS_TYPE_BANK1, },
        { "in_filtered",                4, 0x01, STATS_TYPE_BANK1, },
        { "in_accepted",                4, 0x02, STATS_TYPE_BANK1, },
        { "in_bad_accepted",            4, 0x03, STATS_TYPE_BANK1, },
        { "in_good_avb_class_a",        4, 0x04, STATS_TYPE_BANK1, },
        { "in_good_avb_class_b",        4, 0x05, STATS_TYPE_BANK1, },
        { "in_bad_avb_class_a",         4, 0x06, STATS_TYPE_BANK1, },
        { "in_bad_avb_class_b",         4, 0x07, STATS_TYPE_BANK1, },
        { "tcam_counter_0",             4, 0x08, STATS_TYPE_BANK1, },
        { "tcam_counter_1",             4, 0x09, STATS_TYPE_BANK1, },
        { "tcam_counter_2",             4, 0x0a, STATS_TYPE_BANK1, },
        { "tcam_counter_3",             4, 0x0b, STATS_TYPE_BANK1, },
        { "in_da_unknown",              4, 0x0e, STATS_TYPE_BANK1, },
        { "in_management",              4, 0x0f, STATS_TYPE_BANK1, },
        { "out_queue_0",                4, 0x10, STATS_TYPE_BANK1, },
        { "out_queue_1",                4, 0x11, STATS_TYPE_BANK1, },
        { "out_queue_2",                4, 0x12, STATS_TYPE_BANK1, },
        { "out_queue_3",                4, 0x13, STATS_TYPE_BANK1, },
        { "out_queue_4",                4, 0x14, STATS_TYPE_BANK1, },
        { "out_queue_5",                4, 0x15, STATS_TYPE_BANK1, },
        { "out_queue_6",                4, 0x16, STATS_TYPE_BANK1, },
        { "out_queue_7",                4, 0x17, STATS_TYPE_BANK1, },
        { "out_cut_through",            4, 0x18, STATS_TYPE_BANK1, },
        { "out_octets_a",               4, 0x1a, STATS_TYPE_BANK1, },
        { "out_octets_b",               4, 0x1b, STATS_TYPE_BANK1, },
        { "out_management",             4, 0x1f, STATS_TYPE_BANK1, },
};

static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
                                            struct mv88e6xxx_hw_stat *s,
                                            int port, u16 bank1_select,
                                            u16 histogram)
{
        u32 low;
        u32 high = 0;
        u16 reg = 0;
        int err;
        u64 value;

        switch (s->type) {
        case STATS_TYPE_PORT:
                err = mv88e6xxx_port_read(chip, port, s->reg, &reg);
                if (err)
                        return U64_MAX;

                low = reg;
                if (s->size == 4) {
                        err = mv88e6xxx_port_read(chip, port, s->reg + 1, &reg);
                        if (err)
                                return U64_MAX;
                        low |= ((u32)reg) << 16;
                }
                break;
        case STATS_TYPE_BANK1:
                reg = bank1_select;
                /* fall through */
        case STATS_TYPE_BANK0:
                reg |= s->reg | histogram;
                mv88e6xxx_g1_stats_read(chip, reg, &low);
                if (s->size == 8)
                        mv88e6xxx_g1_stats_read(chip, reg + 1, &high);
                break;
        default:
                return U64_MAX;
        }
        value = (((u64)high) << 32) | low;
        return value;
}

static int mv88e6xxx_stats_get_strings(struct mv88e6xxx_chip *chip,
                                       uint8_t *data, int types)
{
        struct mv88e6xxx_hw_stat *stat;
        int i, j;

        for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
                stat = &mv88e6xxx_hw_stats[i];
                if (stat->type & types) {
                        memcpy(data + j * ETH_GSTRING_LEN, stat->string,
                               ETH_GSTRING_LEN);
                        j++;
                }
        }

        return j;
}

static int mv88e6095_stats_get_strings(struct mv88e6xxx_chip *chip,
                                       uint8_t *data)
{
        return mv88e6xxx_stats_get_strings(chip, data,
                                           STATS_TYPE_BANK0 | STATS_TYPE_PORT);
}

static int mv88e6320_stats_get_strings(struct mv88e6xxx_chip *chip,
                                       uint8_t *data)
{
        return mv88e6xxx_stats_get_strings(chip, data,
                                           STATS_TYPE_BANK0 | STATS_TYPE_BANK1);
}

static const uint8_t *mv88e6xxx_atu_vtu_stats_strings[] = {
        "atu_member_violation",
        "atu_miss_violation",
        "atu_full_violation",
        "vtu_member_violation",
        "vtu_miss_violation",
};

static void mv88e6xxx_atu_vtu_get_strings(uint8_t *data)
{
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(mv88e6xxx_atu_vtu_stats_strings); i++)
                strlcpy(data + i * ETH_GSTRING_LEN,
                        mv88e6xxx_atu_vtu_stats_strings[i],
                        ETH_GSTRING_LEN);
}

static void mv88e6xxx_get_strings(struct dsa_switch *ds, int port,
                                  u32 stringset, uint8_t *data)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int count = 0;

        if (stringset != ETH_SS_STATS)
                return;

        mutex_lock(&chip->reg_lock);

        if (chip->info->ops->stats_get_strings)
                count = chip->info->ops->stats_get_strings(chip, data);

        if (chip->info->ops->serdes_get_strings) {
                data += count * ETH_GSTRING_LEN;
                count = chip->info->ops->serdes_get_strings(chip, port, data);
        }

        data += count * ETH_GSTRING_LEN;
        mv88e6xxx_atu_vtu_get_strings(data);

        mutex_unlock(&chip->reg_lock);
}

static int mv88e6xxx_stats_get_sset_count(struct mv88e6xxx_chip *chip,
                                          int types)
{
        struct mv88e6xxx_hw_stat *stat;
        int i, j;

        for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
                stat = &mv88e6xxx_hw_stats[i];
                if (stat->type & types)
                        j++;
        }
        return j;
}

static int mv88e6095_stats_get_sset_count(struct mv88e6xxx_chip *chip)
{
        return mv88e6xxx_stats_get_sset_count(chip, STATS_TYPE_BANK0 |
                                              STATS_TYPE_PORT);
}

static int mv88e6320_stats_get_sset_count(struct mv88e6xxx_chip *chip)
{
        return mv88e6xxx_stats_get_sset_count(chip, STATS_TYPE_BANK0 |
                                              STATS_TYPE_BANK1);
}

static int mv88e6xxx_get_sset_count(struct dsa_switch *ds, int port, int sset)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int serdes_count = 0;
        int count = 0;

        if (sset != ETH_SS_STATS)
                return 0;

        mutex_lock(&chip->reg_lock);
        if (chip->info->ops->stats_get_sset_count)
                count = chip->info->ops->stats_get_sset_count(chip);
        if (count < 0)
                goto out;

        if (chip->info->ops->serdes_get_sset_count)
                serdes_count = chip->info->ops->serdes_get_sset_count(chip,
                                                                      port);
        if (serdes_count < 0) {
                count = serdes_count;
                goto out;
        }
        count += serdes_count;
        count += ARRAY_SIZE(mv88e6xxx_atu_vtu_stats_strings);

out:
        mutex_unlock(&chip->reg_lock);

        return count;
}

static int mv88e6xxx_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
                                     uint64_t *data, int types,
                                     u16 bank1_select, u16 histogram)
{
        struct mv88e6xxx_hw_stat *stat;
        int i, j;

        for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
                stat = &mv88e6xxx_hw_stats[i];
                if (stat->type & types) {
                        mutex_lock(&chip->reg_lock);
                        data[j] = _mv88e6xxx_get_ethtool_stat(chip, stat, port,
                                                              bank1_select,
                                                              histogram);
                        mutex_unlock(&chip->reg_lock);

                        j++;
                }
        }
        return j;
}

static int mv88e6095_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
                                     uint64_t *data)
{
        return mv88e6xxx_stats_get_stats(chip, port, data,
                                         STATS_TYPE_BANK0 | STATS_TYPE_PORT,
                                         0, MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
}

static int mv88e6320_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
                                     uint64_t *data)
{
        return mv88e6xxx_stats_get_stats(chip, port, data,
                                         STATS_TYPE_BANK0 | STATS_TYPE_BANK1,
                                         MV88E6XXX_G1_STATS_OP_BANK_1_BIT_9,
                                         MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
}

static int mv88e6390_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
                                     uint64_t *data)
{
        return mv88e6xxx_stats_get_stats(chip, port, data,
                                         STATS_TYPE_BANK0 | STATS_TYPE_BANK1,
                                         MV88E6XXX_G1_STATS_OP_BANK_1_BIT_10,
                                         0);
}

static void mv88e6xxx_atu_vtu_get_stats(struct mv88e6xxx_chip *chip, int port,
                                        uint64_t *data)
{
        *data++ = chip->ports[port].atu_member_violation;
        *data++ = chip->ports[port].atu_miss_violation;
        *data++ = chip->ports[port].atu_full_violation;
        *data++ = chip->ports[port].vtu_member_violation;
        *data++ = chip->ports[port].vtu_miss_violation;
}

static void mv88e6xxx_get_stats(struct mv88e6xxx_chip *chip, int port,
                                uint64_t *data)
{
        int count = 0;

        if (chip->info->ops->stats_get_stats)
                count = chip->info->ops->stats_get_stats(chip, port, data);

        mutex_lock(&chip->reg_lock);
        if (chip->info->ops->serdes_get_stats) {
                data += count;
                count = chip->info->ops->serdes_get_stats(chip, port, data);
        }
        data += count;
        mv88e6xxx_atu_vtu_get_stats(chip, port, data);
        mutex_unlock(&chip->reg_lock);
}

static void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds, int port,
                                        uint64_t *data)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int ret;

        mutex_lock(&chip->reg_lock);

        ret = mv88e6xxx_stats_snapshot(chip, port);
        mutex_unlock(&chip->reg_lock);

        if (ret < 0)
                return;

        mv88e6xxx_get_stats(chip, port, data);

}

static int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port)
{
        return 32 * sizeof(u16);
}

static void mv88e6xxx_get_regs(struct dsa_switch *ds, int port,
                               struct ethtool_regs *regs, void *_p)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;
        u16 reg;
        u16 *p = _p;
        int i;

        regs->version = chip->info->prod_num;

        memset(p, 0xff, 32 * sizeof(u16));

        mutex_lock(&chip->reg_lock);

        for (i = 0; i < 32; i++) {

                err = mv88e6xxx_port_read(chip, port, i, &reg);
                if (!err)
                        p[i] = reg;
        }

        mutex_unlock(&chip->reg_lock);
}

static int mv88e6xxx_get_mac_eee(struct dsa_switch *ds, int port,
                                 struct ethtool_eee *e)
{
        /* Nothing to do on the port's MAC */
        return 0;
}

static int mv88e6xxx_set_mac_eee(struct dsa_switch *ds, int port,
                                 struct ethtool_eee *e)
{
        /* Nothing to do on the port's MAC */
        return 0;
}

static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
{
        struct dsa_switch *ds = NULL;
        struct net_device *br;
        u16 pvlan;
        int i;

        if (dev < DSA_MAX_SWITCHES)
                ds = chip->ds->dst->ds[dev];

        /* Prevent frames from unknown switch or port */
        if (!ds || port >= ds->num_ports)
                return 0;

        /* Frames from DSA links and CPU ports can egress any local port */
        if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
                return mv88e6xxx_port_mask(chip);

        br = ds->ports[port].bridge_dev;
        pvlan = 0;

        /* Frames from user ports can egress any local DSA links and CPU ports,
         * as well as any local member of their bridge group.
         */
        for (i = 0; i < mv88e6xxx_num_ports(chip); ++i)
                if (dsa_is_cpu_port(chip->ds, i) ||
                    dsa_is_dsa_port(chip->ds, i) ||
                    (br && dsa_to_port(chip->ds, i)->bridge_dev == br))
                        pvlan |= BIT(i);

        return pvlan;
}

static int mv88e6xxx_port_vlan_map(struct mv88e6xxx_chip *chip, int port)
{
        u16 output_ports = mv88e6xxx_port_vlan(chip, chip->ds->index, port);

        /* prevent frames from going back out of the port they came in on */
        output_ports &= ~BIT(port);

        return mv88e6xxx_port_set_vlan_map(chip, port, output_ports);
}

static void mv88e6xxx_port_stp_state_set(struct dsa_switch *ds, int port,
                                         u8 state)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_set_state(chip, port, state);
        mutex_unlock(&chip->reg_lock);

        if (err)
                dev_err(ds->dev, "p%d: failed to update state\n", port);
}

static int mv88e6xxx_pri_setup(struct mv88e6xxx_chip *chip)
{
        int err;

        if (chip->info->ops->ieee_pri_map) {
                err = chip->info->ops->ieee_pri_map(chip);
                if (err)
                        return err;
        }

        if (chip->info->ops->ip_pri_map) {
                err = chip->info->ops->ip_pri_map(chip);
                if (err)
                        return err;
        }

        return 0;
}

static int mv88e6xxx_devmap_setup(struct mv88e6xxx_chip *chip)
{
        int target, port;
        int err;

        if (!chip->info->global2_addr)
                return 0;

        /* Initialize the routing port to the 32 possible target devices */
        for (target = 0; target < 32; target++) {
                port = 0x1f;
                if (target < DSA_MAX_SWITCHES)
                        if (chip->ds->rtable[target] != DSA_RTABLE_NONE)
                                port = chip->ds->rtable[target];

                err = mv88e6xxx_g2_device_mapping_write(chip, target, port);
                if (err)
                        return err;
        }

        if (chip->info->ops->set_cascade_port) {
                port = MV88E6XXX_CASCADE_PORT_MULTIPLE;
                err = chip->info->ops->set_cascade_port(chip, port);
                if (err)
                        return err;
        }

        err = mv88e6xxx_g1_set_device_number(chip, chip->ds->index);
        if (err)
                return err;

        return 0;
}

static int mv88e6xxx_trunk_setup(struct mv88e6xxx_chip *chip)
{
        /* Clear all trunk masks and mapping */
        if (chip->info->global2_addr)
                return mv88e6xxx_g2_trunk_clear(chip);

        return 0;
}

static int mv88e6xxx_rmu_setup(struct mv88e6xxx_chip *chip)
{
        if (chip->info->ops->rmu_disable)
                return chip->info->ops->rmu_disable(chip);

        return 0;
}

static int mv88e6xxx_pot_setup(struct mv88e6xxx_chip *chip)
{
        if (chip->info->ops->pot_clear)
                return chip->info->ops->pot_clear(chip);

        return 0;
}

static int mv88e6xxx_rsvd2cpu_setup(struct mv88e6xxx_chip *chip)
{
        if (chip->info->ops->mgmt_rsvd2cpu)
                return chip->info->ops->mgmt_rsvd2cpu(chip);

        return 0;
}

static int mv88e6xxx_atu_setup(struct mv88e6xxx_chip *chip)
{
        int err;

        err = mv88e6xxx_g1_atu_flush(chip, 0, true);
        if (err)
                return err;

        err = mv88e6xxx_g1_atu_set_learn2all(chip, true);
        if (err)
                return err;

        return mv88e6xxx_g1_atu_set_age_time(chip, 300000);
}

static int mv88e6xxx_irl_setup(struct mv88e6xxx_chip *chip)
{
        int port;
        int err;

        if (!chip->info->ops->irl_init_all)
                return 0;

        for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
                /* Disable ingress rate limiting by resetting all per port
                 * ingress rate limit resources to their initial state.
                 */
                err = chip->info->ops->irl_init_all(chip, port);
                if (err)
                        return err;
        }

        return 0;
}

static int mv88e6xxx_mac_setup(struct mv88e6xxx_chip *chip)
{
        if (chip->info->ops->set_switch_mac) {
                u8 addr[ETH_ALEN];

                eth_random_addr(addr);

                return chip->info->ops->set_switch_mac(chip, addr);
        }

        return 0;
}

static int mv88e6xxx_pvt_map(struct mv88e6xxx_chip *chip, int dev, int port)
{
        u16 pvlan = 0;

        if (!mv88e6xxx_has_pvt(chip))
                return -EOPNOTSUPP;

        /* Skip the local source device, which uses in-chip port VLAN */
        if (dev != chip->ds->index)
                pvlan = mv88e6xxx_port_vlan(chip, dev, port);

        return mv88e6xxx_g2_pvt_write(chip, dev, port, pvlan);
}

static int mv88e6xxx_pvt_setup(struct mv88e6xxx_chip *chip)
{
        int dev, port;
        int err;

        if (!mv88e6xxx_has_pvt(chip))
                return 0;

        /* Clear 5 Bit Port for usage with Marvell Link Street devices:
         * use 4 bits for the Src_Port/Src_Trunk and 5 bits for the Src_Dev.
         */
        err = mv88e6xxx_g2_misc_4_bit_port(chip);
        if (err)
                return err;

        for (dev = 0; dev < MV88E6XXX_MAX_PVT_SWITCHES; ++dev) {
                for (port = 0; port < MV88E6XXX_MAX_PVT_PORTS; ++port) {
                        err = mv88e6xxx_pvt_map(chip, dev, port);
                        if (err)
                                return err;
                }
        }

        return 0;
}

static void mv88e6xxx_port_fast_age(struct dsa_switch *ds, int port)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_g1_atu_remove(chip, 0, port, false);
        mutex_unlock(&chip->reg_lock);

        if (err)
                dev_err(ds->dev, "p%d: failed to flush ATU\n", port);
}

static int mv88e6xxx_vtu_setup(struct mv88e6xxx_chip *chip)
{
        if (!chip->info->max_vid)
                return 0;

        return mv88e6xxx_g1_vtu_flush(chip);
}

static int mv88e6xxx_vtu_getnext(struct mv88e6xxx_chip *chip,
                                 struct mv88e6xxx_vtu_entry *entry)
{
        if (!chip->info->ops->vtu_getnext)
                return -EOPNOTSUPP;

        return chip->info->ops->vtu_getnext(chip, entry);
}

static int mv88e6xxx_vtu_loadpurge(struct mv88e6xxx_chip *chip,
                                   struct mv88e6xxx_vtu_entry *entry)
{
        if (!chip->info->ops->vtu_loadpurge)
                return -EOPNOTSUPP;

        return chip->info->ops->vtu_loadpurge(chip, entry);
}

static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid)
{
        DECLARE_BITMAP(fid_bitmap, MV88E6XXX_N_FID);
        struct mv88e6xxx_vtu_entry vlan = {
                .vid = chip->info->max_vid,
        };
        int i, err;

        bitmap_zero(fid_bitmap, MV88E6XXX_N_FID);

        /* Set every FID bit used by the (un)bridged ports */
        for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) {
                err = mv88e6xxx_port_get_fid(chip, i, fid);
                if (err)
                        return err;

                set_bit(*fid, fid_bitmap);
        }

        /* Set every FID bit used by the VLAN entries */
        do {
                err = mv88e6xxx_vtu_getnext(chip, &vlan);
                if (err)
                        return err;

                if (!vlan.valid)
                        break;

                set_bit(vlan.fid, fid_bitmap);
        } while (vlan.vid < chip->info->max_vid);

        /* The reset value 0x000 is used to indicate that multiple address
         * databases are not needed. Return the next positive available.
         */
        *fid = find_next_zero_bit(fid_bitmap, MV88E6XXX_N_FID, 1);
        if (unlikely(*fid >= mv88e6xxx_num_databases(chip)))
                return -ENOSPC;

        /* Clear the database */
        return mv88e6xxx_g1_atu_flush(chip, *fid, true);
}

static int mv88e6xxx_vtu_get(struct mv88e6xxx_chip *chip, u16 vid,
                             struct mv88e6xxx_vtu_entry *entry, bool new)
{
        int err;

        if (!vid)
                return -EOPNOTSUPP;

        entry->vid = vid - 1;
        entry->valid = false;

        err = mv88e6xxx_vtu_getnext(chip, entry);
        if (err)
                return err;

        if (entry->vid == vid && entry->valid)
                return 0;

        if (new) {
                int i;

                /* Initialize a fresh VLAN entry */
                memset(entry, 0, sizeof(*entry));
                entry->valid = true;
                entry->vid = vid;

                /* Exclude all ports */
                for (i = 0; i < mv88e6xxx_num_ports(chip); ++i)
                        entry->member[i] =
                                MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER;

                return mv88e6xxx_atu_new(chip, &entry->fid);
        }

        /* switchdev expects -EOPNOTSUPP to honor software VLANs */
        return -EOPNOTSUPP;
}

static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
                                        u16 vid_begin, u16 vid_end)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        struct mv88e6xxx_vtu_entry vlan = {
                .vid = vid_begin - 1,
        };
        int i, err;

        /* DSA and CPU ports have to be members of multiple vlans */
        if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
                return 0;

        if (!vid_begin)
                return -EOPNOTSUPP;

        mutex_lock(&chip->reg_lock);

        do {
                err = mv88e6xxx_vtu_getnext(chip, &vlan);
                if (err)
                        goto unlock;

                if (!vlan.valid)
                        break;

                if (vlan.vid > vid_end)
                        break;

                for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) {
                        if (dsa_is_dsa_port(ds, i) || dsa_is_cpu_port(ds, i))
                                continue;

                        if (!ds->ports[i].slave)
                                continue;

                        if (vlan.member[i] ==
                            MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER)
                                continue;

                        if (dsa_to_port(ds, i)->bridge_dev ==
                            ds->ports[port].bridge_dev)
                                break; /* same bridge, check next VLAN */

                        if (!dsa_to_port(ds, i)->bridge_dev)
                                continue;

                        dev_err(ds->dev, "p%d: hw VLAN %d already used by port %d in %s\n",
                                port, vlan.vid, i,
                                netdev_name(dsa_to_port(ds, i)->bridge_dev));
                        err = -EOPNOTSUPP;
                        goto unlock;
                }
        } while (vlan.vid < vid_end);

unlock:
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_port_vlan_filtering(struct dsa_switch *ds, int port,
                                         bool vlan_filtering)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        u16 mode = vlan_filtering ? MV88E6XXX_PORT_CTL2_8021Q_MODE_SECURE :
                MV88E6XXX_PORT_CTL2_8021Q_MODE_DISABLED;
        int err;

        if (!chip->info->max_vid)
                return -EOPNOTSUPP;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_set_8021q_mode(chip, port, mode);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int
mv88e6xxx_port_vlan_prepare(struct dsa_switch *ds, int port,
                            const struct switchdev_obj_port_vlan *vlan)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        if (!chip->info->max_vid)
                return -EOPNOTSUPP;

        /* If the requested port doesn't belong to the same bridge as the VLAN
         * members, do not support it (yet) and fallback to software VLAN.
         */
        err = mv88e6xxx_port_check_hw_vlan(ds, port, vlan->vid_begin,
                                           vlan->vid_end);
        if (err)
                return err;

        /* We don't need any dynamic resource from the kernel (yet),
         * so skip the prepare phase.
         */
        return 0;
}

static int mv88e6xxx_port_db_load_purge(struct mv88e6xxx_chip *chip, int port,
                                        const unsigned char *addr, u16 vid,
                                        u8 state)
{
        struct mv88e6xxx_vtu_entry vlan;
        struct mv88e6xxx_atu_entry entry;
        int err;

        /* Null VLAN ID corresponds to the port private database */
        if (vid == 0)
                err = mv88e6xxx_port_get_fid(chip, port, &vlan.fid);
        else
                err = mv88e6xxx_vtu_get(chip, vid, &vlan, false);
        if (err)
                return err;

        entry.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
        ether_addr_copy(entry.mac, addr);
        eth_addr_dec(entry.mac);

        err = mv88e6xxx_g1_atu_getnext(chip, vlan.fid, &entry);
        if (err)
                return err;

        /* Initialize a fresh ATU entry if it isn't found */
        if (entry.state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED ||
            !ether_addr_equal(entry.mac, addr)) {
                memset(&entry, 0, sizeof(entry));
                ether_addr_copy(entry.mac, addr);
        }

        /* Purge the ATU entry only if no port is using it anymore */
        if (state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED) {
                entry.portvec &= ~BIT(port);
                if (!entry.portvec)
                        entry.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
        } else {
                entry.portvec |= BIT(port);
                entry.state = state;
        }

        return mv88e6xxx_g1_atu_loadpurge(chip, vlan.fid, &entry);
}

static int mv88e6xxx_port_add_broadcast(struct mv88e6xxx_chip *chip, int port,
                                        u16 vid)
{
        const char broadcast[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
        u8 state = MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC;

        return mv88e6xxx_port_db_load_purge(chip, port, broadcast, vid, state);
}

static int mv88e6xxx_broadcast_setup(struct mv88e6xxx_chip *chip, u16 vid)
{
        int port;
        int err;

        for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
                err = mv88e6xxx_port_add_broadcast(chip, port, vid);
                if (err)
                        return err;
        }

        return 0;
}

static int _mv88e6xxx_port_vlan_add(struct mv88e6xxx_chip *chip, int port,
                                    u16 vid, u8 member)
{
        struct mv88e6xxx_vtu_entry vlan;
        int err;

        err = mv88e6xxx_vtu_get(chip, vid, &vlan, true);
        if (err)
                return err;

        vlan.member[port] = member;

        err = mv88e6xxx_vtu_loadpurge(chip, &vlan);
        if (err)
                return err;

        return mv88e6xxx_broadcast_setup(chip, vid);
}

static void mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
                                    const struct switchdev_obj_port_vlan *vlan)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
        bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
        u8 member;
        u16 vid;

        if (!chip->info->max_vid)
                return;

        if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
                member = MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_UNMODIFIED;
        else if (untagged)
                member = MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_UNTAGGED;
        else
                member = MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_TAGGED;

        mutex_lock(&chip->reg_lock);

        for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid)
                if (_mv88e6xxx_port_vlan_add(chip, port, vid, member))
                        dev_err(ds->dev, "p%d: failed to add VLAN %d%c\n", port,
                                vid, untagged ? 'u' : 't');

        if (pvid && mv88e6xxx_port_set_pvid(chip, port, vlan->vid_end))
                dev_err(ds->dev, "p%d: failed to set PVID %d\n", port,
                        vlan->vid_end);

        mutex_unlock(&chip->reg_lock);
}

static int _mv88e6xxx_port_vlan_del(struct mv88e6xxx_chip *chip,
                                    int port, u16 vid)
{
        struct mv88e6xxx_vtu_entry vlan;
        int i, err;

        err = mv88e6xxx_vtu_get(chip, vid, &vlan, false);
        if (err)
                return err;

        /* Tell switchdev if this VLAN is handled in software */
        if (vlan.member[port] == MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER)
                return -EOPNOTSUPP;

        vlan.member[port] = MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER;

        /* keep the VLAN unless all ports are excluded */
        vlan.valid = false;
        for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) {
                if (vlan.member[i] !=
                    MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER) {
                        vlan.valid = true;
                        break;
                }
        }

        err = mv88e6xxx_vtu_loadpurge(chip, &vlan);
        if (err)
                return err;

        return mv88e6xxx_g1_atu_remove(chip, vlan.fid, port, false);
}

static int mv88e6xxx_port_vlan_del(struct dsa_switch *ds, int port,
                                   const struct switchdev_obj_port_vlan *vlan)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        u16 pvid, vid;
        int err = 0;

        if (!chip->info->max_vid)
                return -EOPNOTSUPP;

        mutex_lock(&chip->reg_lock);

        err = mv88e6xxx_port_get_pvid(chip, port, &pvid);
        if (err)
                goto unlock;

        for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
                err = _mv88e6xxx_port_vlan_del(chip, port, vid);
                if (err)
                        goto unlock;

                if (vid == pvid) {
                        err = mv88e6xxx_port_set_pvid(chip, port, 0);
                        if (err)
                                goto unlock;
                }
        }

unlock:
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port,
                                  const unsigned char *addr, u16 vid)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_db_load_purge(chip, port, addr, vid,
                                           MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port,
                                  const unsigned char *addr, u16 vid)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_db_load_purge(chip, port, addr, vid,
                                           MV88E6XXX_G1_ATU_DATA_STATE_UNUSED);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
                                      u16 fid, u16 vid, int port,
                                      dsa_fdb_dump_cb_t *cb, void *data)
{
        struct mv88e6xxx_atu_entry addr;
        bool is_static;
        int err;

        addr.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
        eth_broadcast_addr(addr.mac);

        do {
                mutex_lock(&chip->reg_lock);
                err = mv88e6xxx_g1_atu_getnext(chip, fid, &addr);
                mutex_unlock(&chip->reg_lock);
                if (err)
                        return err;

                if (addr.state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED)
                        break;

                if (addr.trunk || (addr.portvec & BIT(port)) == 0)
                        continue;

                if (!is_unicast_ether_addr(addr.mac))
                        continue;

                is_static = (addr.state ==
                             MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC);
                err = cb(addr.mac, vid, is_static, data);
                if (err)
                        return err;
        } while (!is_broadcast_ether_addr(addr.mac));

        return err;
}

static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
                                  dsa_fdb_dump_cb_t *cb, void *data)
{
        struct mv88e6xxx_vtu_entry vlan = {
                .vid = chip->info->max_vid,
        };
        u16 fid;
        int err;

        /* Dump port's default Filtering Information Database (VLAN ID 0) */
        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_port_get_fid(chip, port, &fid);
        mutex_unlock(&chip->reg_lock);

        if (err)
                return err;

        err = mv88e6xxx_port_db_dump_fid(chip, fid, 0, port, cb, data);
        if (err)
                return err;

        /* Dump VLANs' Filtering Information Databases */
        do {
                mutex_lock(&chip->reg_lock);
                err = mv88e6xxx_vtu_getnext(chip, &vlan);
                mutex_unlock(&chip->reg_lock);
                if (err)
                        return err;

                if (!vlan.valid)
                        break;

                err = mv88e6xxx_port_db_dump_fid(chip, vlan.fid, vlan.vid, port,
                                                 cb, data);
                if (err)
                        return err;
        } while (vlan.vid < chip->info->max_vid);

        return err;
}

static int mv88e6xxx_port_fdb_dump(struct dsa_switch *ds, int port,
                                   dsa_fdb_dump_cb_t *cb, void *data)
{
        struct mv88e6xxx_chip *chip = ds->priv;

        return mv88e6xxx_port_db_dump(chip, port, cb, data);
}

static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
                                struct net_device *br)
{
        struct dsa_switch *ds;
        int port;
        int dev;
        int err;

        /* Remap the Port VLAN of each local bridge group member */
        for (port = 0; port < mv88e6xxx_num_ports(chip); ++port) {
                if (chip->ds->ports[port].bridge_dev == br) {
                        err = mv88e6xxx_port_vlan_map(chip, port);
                        if (err)
                                return err;
                }
        }

        if (!mv88e6xxx_has_pvt(chip))
                return 0;

        /* Remap the Port VLAN of each cross-chip bridge group member */
        for (dev = 0; dev < DSA_MAX_SWITCHES; ++dev) {
                ds = chip->ds->dst->ds[dev];
                if (!ds)
                        break;

                for (port = 0; port < ds->num_ports; ++port) {
                        if (ds->ports[port].bridge_dev == br) {
                                err = mv88e6xxx_pvt_map(chip, dev, port);
                                if (err)
                                        return err;
                        }
                }
        }

        return 0;
}

static int mv88e6xxx_port_bridge_join(struct dsa_switch *ds, int port,
                                      struct net_device *br)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_bridge_map(chip, br);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static void mv88e6xxx_port_bridge_leave(struct dsa_switch *ds, int port,
                                        struct net_device *br)
{
        struct mv88e6xxx_chip *chip = ds->priv;

        mutex_lock(&chip->reg_lock);
        if (mv88e6xxx_bridge_map(chip, br) ||
            mv88e6xxx_port_vlan_map(chip, port))
                dev_err(ds->dev, "failed to remap in-chip Port VLAN\n");
        mutex_unlock(&chip->reg_lock);
}

static int mv88e6xxx_crosschip_bridge_join(struct dsa_switch *ds, int dev,
                                           int port, struct net_device *br)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        if (!mv88e6xxx_has_pvt(chip))
                return 0;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_pvt_map(chip, dev, port);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static void mv88e6xxx_crosschip_bridge_leave(struct dsa_switch *ds, int dev,
                                             int port, struct net_device *br)
{
        struct mv88e6xxx_chip *chip = ds->priv;

        if (!mv88e6xxx_has_pvt(chip))
                return;

        mutex_lock(&chip->reg_lock);
        if (mv88e6xxx_pvt_map(chip, dev, port))
                dev_err(ds->dev, "failed to remap cross-chip Port VLAN\n");
        mutex_unlock(&chip->reg_lock);
}

static int mv88e6xxx_software_reset(struct mv88e6xxx_chip *chip)
{
        if (chip->info->ops->reset)
                return chip->info->ops->reset(chip);

        return 0;
}

static void mv88e6xxx_hardware_reset(struct mv88e6xxx_chip *chip)
{
        struct gpio_desc *gpiod = chip->reset;

        /* If there is a GPIO connected to the reset pin, toggle it */
        if (gpiod) {
                gpiod_set_value_cansleep(gpiod, 1);
                usleep_range(10000, 20000);
                gpiod_set_value_cansleep(gpiod, 0);
                usleep_range(10000, 20000);
        }
}

static int mv88e6xxx_disable_ports(struct mv88e6xxx_chip *chip)
{
        int i, err;

        /* Set all ports to the Disabled state */
        for (i = 0; i < mv88e6xxx_num_ports(chip); i++) {
                err = mv88e6xxx_port_set_state(chip, i, BR_STATE_DISABLED);
                if (err)
                        return err;
        }

        /* Wait for transmit queues to drain,
         * i.e. 2ms for a maximum frame to be transmitted at 10 Mbps.
         */
        usleep_range(2000, 4000);

        return 0;
}

static int mv88e6xxx_switch_reset(struct mv88e6xxx_chip *chip)
{
        int err;

        err = mv88e6xxx_disable_ports(chip);
        if (err)
                return err;

        mv88e6xxx_hardware_reset(chip);

        return mv88e6xxx_software_reset(chip);
}

static int mv88e6xxx_set_port_mode(struct mv88e6xxx_chip *chip, int port,
                                   enum mv88e6xxx_frame_mode frame,
                                   enum mv88e6xxx_egress_mode egress, u16 etype)
{
        int err;

        if (!chip->info->ops->port_set_frame_mode)
                return -EOPNOTSUPP;

        err = mv88e6xxx_port_set_egress_mode(chip, port, egress);
        if (err)
                return err;

        err = chip->info->ops->port_set_frame_mode(chip, port, frame);
        if (err)
                return err;

        if (chip->info->ops->port_set_ether_type)
                return chip->info->ops->port_set_ether_type(chip, port, etype);

        return 0;
}

static int mv88e6xxx_set_port_mode_normal(struct mv88e6xxx_chip *chip, int port)
{
        return mv88e6xxx_set_port_mode(chip, port, MV88E6XXX_FRAME_MODE_NORMAL,
                                       MV88E6XXX_EGRESS_MODE_UNMODIFIED,
                                       MV88E6XXX_PORT_ETH_TYPE_DEFAULT);
}

static int mv88e6xxx_set_port_mode_dsa(struct mv88e6xxx_chip *chip, int port)
{
        return mv88e6xxx_set_port_mode(chip, port, MV88E6XXX_FRAME_MODE_DSA,
                                       MV88E6XXX_EGRESS_MODE_UNMODIFIED,
                                       MV88E6XXX_PORT_ETH_TYPE_DEFAULT);
}

static int mv88e6xxx_set_port_mode_edsa(struct mv88e6xxx_chip *chip, int port)
{
        return mv88e6xxx_set_port_mode(chip, port,
                                       MV88E6XXX_FRAME_MODE_ETHERTYPE,
                                       MV88E6XXX_EGRESS_MODE_ETHERTYPE,
                                       ETH_P_EDSA);
}

static int mv88e6xxx_setup_port_mode(struct mv88e6xxx_chip *chip, int port)
{
        if (dsa_is_dsa_port(chip->ds, port))
                return mv88e6xxx_set_port_mode_dsa(chip, port);

        if (dsa_is_user_port(chip->ds, port))
                return mv88e6xxx_set_port_mode_normal(chip, port);

        /* Setup CPU port mode depending on its supported tag format */
        if (chip->info->tag_protocol == DSA_TAG_PROTO_DSA)
                return mv88e6xxx_set_port_mode_dsa(chip, port);

        if (chip->info->tag_protocol == DSA_TAG_PROTO_EDSA)
                return mv88e6xxx_set_port_mode_edsa(chip, port);

        return -EINVAL;
}

static int mv88e6xxx_setup_message_port(struct mv88e6xxx_chip *chip, int port)
{
        bool message = dsa_is_dsa_port(chip->ds, port);

        return mv88e6xxx_port_set_message_port(chip, port, message);
}

static int mv88e6xxx_setup_egress_floods(struct mv88e6xxx_chip *chip, int port)
{
        struct dsa_switch *ds = chip->ds;
        bool flood;

        /* Upstream ports flood frames with unknown unicast or multicast DA */
        flood = dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port);
        if (chip->info->ops->port_set_egress_floods)
                return chip->info->ops->port_set_egress_floods(chip, port,
                                                               flood, flood);

        return 0;
}

static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
                                  bool on)
{
        if (chip->info->ops->serdes_power)
                return chip->info->ops->serdes_power(chip, port, on);

        return 0;
}

static int mv88e6xxx_setup_upstream_port(struct mv88e6xxx_chip *chip, int port)
{
        struct dsa_switch *ds = chip->ds;
        int upstream_port;
        int err;

        upstream_port = dsa_upstream_port(ds, port);
        if (chip->info->ops->port_set_upstream_port) {
                err = chip->info->ops->port_set_upstream_port(chip, port,
                                                              upstream_port);
                if (err)
                        return err;
        }

        if (port == upstream_port) {
                if (chip->info->ops->set_cpu_port) {
                        err = chip->info->ops->set_cpu_port(chip,
                                                            upstream_port);
                        if (err)
                                return err;
                }

                if (chip->info->ops->set_egress_port) {
                        err = chip->info->ops->set_egress_port(chip,
                                                               upstream_port);
                        if (err)
                                return err;
                }
        }

        return 0;
}

static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
{
        struct dsa_switch *ds = chip->ds;
        int err;
        u16 reg;

        chip->ports[port].chip = chip;
        chip->ports[port].port = port;

        /* MAC Forcing register: don't force link, speed, duplex or flow control
         * state to any particular values on physical ports, but force the CPU
         * port and all DSA ports to their maximum bandwidth and full duplex.
         */
        if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
                err = mv88e6xxx_port_setup_mac(chip, port, LINK_FORCED_UP,
                                               SPEED_MAX, DUPLEX_FULL,
                                               PAUSE_OFF,
                                               PHY_INTERFACE_MODE_NA);
        else
                err = mv88e6xxx_port_setup_mac(chip, port, LINK_UNFORCED,
                                               SPEED_UNFORCED, DUPLEX_UNFORCED,
                                               PAUSE_ON,
                                               PHY_INTERFACE_MODE_NA);
        if (err)
                return err;

        /* Port Control: disable Drop-on-Unlock, disable Drop-on-Lock,
         * disable Header mode, enable IGMP/MLD snooping, disable VLAN
         * tunneling, determine priority by looking at 802.1p and IP
         * priority fields (IP prio has precedence), and set STP state
         * to Forwarding.
         *
         * If this is the CPU link, use DSA or EDSA tagging depending
         * on which tagging mode was configured.
         *
         * If this is a link to another switch, use DSA tagging mode.
         *
         * If this is the upstream port for this switch, enable
         * forwarding of unknown unicasts and multicasts.
         */
        reg = MV88E6XXX_PORT_CTL0_IGMP_MLD_SNOOP |
                MV88E6185_PORT_CTL0_USE_TAG | MV88E6185_PORT_CTL0_USE_IP |
                MV88E6XXX_PORT_CTL0_STATE_FORWARDING;
        err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_CTL0, reg);
        if (err)
                return err;

        err = mv88e6xxx_setup_port_mode(chip, port);
        if (err)
                return err;

        err = mv88e6xxx_setup_egress_floods(chip, port);
        if (err)
                return err;

        /* Enable the SERDES interface for DSA and CPU ports. Normal
         * ports SERDES are enabled when the port is enabled, thus
         * saving a bit of power.
         */
        if ((dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) {
                err = mv88e6xxx_serdes_power(chip, port, true);
                if (err)
                        return err;
        }

        /* Port Control 2: don't force a good FCS, set the maximum frame size to
         * 10240 bytes, disable 802.1q tags checking, don't discard tagged or
         * untagged frames on this port, do a destination address lookup on all
         * received packets as usual, disable ARP mirroring and don't send a
         * copy of all transmitted/received frames on this port to the CPU.
         */
        err = mv88e6xxx_port_set_map_da(chip, port);
        if (err)
                return err;

        err = mv88e6xxx_setup_upstream_port(chip, port);
        if (err)
                return err;

        err = mv88e6xxx_port_set_8021q_mode(chip, port,
                                MV88E6XXX_PORT_CTL2_8021Q_MODE_DISABLED);
        if (err)
                return err;

        if (chip->info->ops->port_set_jumbo_size) {
                err = chip->info->ops->port_set_jumbo_size(chip, port, 10240);
                if (err)
                        return err;
        }

        /* Port Association Vector: when learning source addresses
         * of packets, add the address to the address database using
         * a port bitmap that has only the bit for this port set and
         * the other bits clear.
         */
        reg = 1 << port;
        /* Disable learning for CPU port */
        if (dsa_is_cpu_port(ds, port))
                reg = 0;

        err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_ASSOC_VECTOR,
                                   reg);
        if (err)
                return err;

        /* Egress rate control 2: disable egress rate control. */
        err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_EGRESS_RATE_CTL2,
                                   0x0000);
        if (err)
                return err;

        if (chip->info->ops->port_pause_limit) {
                err = chip->info->ops->port_pause_limit(chip, port, 0, 0);
                if (err)
                        return err;
        }

        if (chip->info->ops->port_disable_learn_limit) {
                err = chip->info->ops->port_disable_learn_limit(chip, port);
                if (err)
                        return err;
        }

        if (chip->info->ops->port_disable_pri_override) {
                err = chip->info->ops->port_disable_pri_override(chip, port);
                if (err)
                        return err;
        }

        if (chip->info->ops->port_tag_remap) {
                err = chip->info->ops->port_tag_remap(chip, port);
                if (err)
                        return err;
        }

        if (chip->info->ops->port_egress_rate_limiting) {
                err = chip->info->ops->port_egress_rate_limiting(chip, port);
                if (err)
                        return err;
        }

        err = mv88e6xxx_setup_message_port(chip, port);
        if (err)
                return err;

        /* Port based VLAN map: give each port the same default address
         * database, and allow bidirectional communication between the
         * CPU and DSA port(s), and the other ports.
         */
        err = mv88e6xxx_port_set_fid(chip, port, 0);
        if (err)
                return err;

        err = mv88e6xxx_port_vlan_map(chip, port);
        if (err)
                return err;

        /* Default VLAN ID and priority: don't set a default VLAN
         * ID, and set the default packet priority to zero.
         */
        return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_DEFAULT_VLAN, 0);
}

static int mv88e6xxx_port_enable(struct dsa_switch *ds, int port,
                                 struct phy_device *phydev)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);

        err = mv88e6xxx_serdes_power(chip, port, true);

        if (!err && chip->info->ops->serdes_irq_setup)
                err = chip->info->ops->serdes_irq_setup(chip, port);

        mutex_unlock(&chip->reg_lock);

        return err;
}

static void mv88e6xxx_port_disable(struct dsa_switch *ds, int port)
{
        struct mv88e6xxx_chip *chip = ds->priv;

        mutex_lock(&chip->reg_lock);

        if (mv88e6xxx_port_set_state(chip, port, BR_STATE_DISABLED))
                dev_err(chip->dev, "failed to disable port\n");

        if (chip->info->ops->serdes_irq_free)
                chip->info->ops->serdes_irq_free(chip, port);

        if (mv88e6xxx_serdes_power(chip, port, false))
                dev_err(chip->dev, "failed to power off SERDES\n");

        mutex_unlock(&chip->reg_lock);
}

static int mv88e6xxx_set_ageing_time(struct dsa_switch *ds,
                                     unsigned int ageing_time)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        mutex_lock(&chip->reg_lock);
        err = mv88e6xxx_g1_atu_set_age_time(chip, ageing_time);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_stats_setup(struct mv88e6xxx_chip *chip)
{
        int err;

        /* Initialize the statistics unit */
        if (chip->info->ops->stats_set_histogram) {
                err = chip->info->ops->stats_set_histogram(chip);
                if (err)
                        return err;
        }

        return mv88e6xxx_g1_stats_clear(chip);
}

/* The mv88e6390 has some hidden registers used for debug and
 * development. The errata also makes use of them.
 */
static int mv88e6390_hidden_write(struct mv88e6xxx_chip *chip, int port,
                                  int reg, u16 val)
{
        u16 ctrl;
        int err;

        err = mv88e6xxx_port_write(chip, PORT_RESERVED_1A_DATA_PORT,
                                   PORT_RESERVED_1A, val);
        if (err)
                return err;

        ctrl = PORT_RESERVED_1A_BUSY | PORT_RESERVED_1A_WRITE |
               PORT_RESERVED_1A_BLOCK | port << PORT_RESERVED_1A_PORT_SHIFT |
               reg;

        return mv88e6xxx_port_write(chip, PORT_RESERVED_1A_CTRL_PORT,
                                    PORT_RESERVED_1A, ctrl);
}

static int mv88e6390_hidden_wait(struct mv88e6xxx_chip *chip)
{
        return mv88e6xxx_wait(chip, PORT_RESERVED_1A_CTRL_PORT,
                              PORT_RESERVED_1A, PORT_RESERVED_1A_BUSY);
}


static int mv88e6390_hidden_read(struct mv88e6xxx_chip *chip, int port,
                                  int reg, u16 *val)
{
        u16 ctrl;
        int err;

        ctrl = PORT_RESERVED_1A_BUSY | PORT_RESERVED_1A_READ |
               PORT_RESERVED_1A_BLOCK | port << PORT_RESERVED_1A_PORT_SHIFT |
               reg;

        err = mv88e6xxx_port_write(chip, PORT_RESERVED_1A_CTRL_PORT,
                                   PORT_RESERVED_1A, ctrl);
        if (err)
                return err;

        err = mv88e6390_hidden_wait(chip);
        if (err)
                return err;

        return  mv88e6xxx_port_read(chip, PORT_RESERVED_1A_DATA_PORT,
                                    PORT_RESERVED_1A, val);
}

/* Check if the errata has already been applied. */
static bool mv88e6390_setup_errata_applied(struct mv88e6xxx_chip *chip)
{
        int port;
        int err;
        u16 val;

        for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
                err = mv88e6390_hidden_read(chip, port, 0, &val);
                if (err) {
                        dev_err(chip->dev,
                                "Error reading hidden register: %d\n", err);
                        return false;
                }
                if (val != 0x01c0)
                        return false;
        }

        return true;
}

/* The 6390 copper ports have an errata which require poking magic
 * values into undocumented hidden registers and then performing a
 * software reset.
 */
static int mv88e6390_setup_errata(struct mv88e6xxx_chip *chip)
{
        int port;
        int err;

        if (mv88e6390_setup_errata_applied(chip))
                return 0;

        /* Set the ports into blocking mode */
        for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
                err = mv88e6xxx_port_set_state(chip, port, BR_STATE_DISABLED);
                if (err)
                        return err;
        }

        for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
                err = mv88e6390_hidden_write(chip, port, 0, 0x01c0);
                if (err)
                        return err;
        }

        return mv88e6xxx_software_reset(chip);
}

static int mv88e6xxx_setup(struct dsa_switch *ds)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        u8 cmode;
        int err;
        int i;

        chip->ds = ds;
        ds->slave_mii_bus = mv88e6xxx_default_mdio_bus(chip);

        mutex_lock(&chip->reg_lock);

        if (chip->info->ops->setup_errata) {
                err = chip->info->ops->setup_errata(chip);
                if (err)
                        goto unlock;
        }

        /* Cache the cmode of each port. */
        for (i = 0; i < mv88e6xxx_num_ports(chip); i++) {
                if (chip->info->ops->port_get_cmode) {
                        err = chip->info->ops->port_get_cmode(chip, i, &cmode);
                        if (err)
                                goto unlock;

                        chip->ports[i].cmode = cmode;
                }
        }

        /* Setup Switch Port Registers */
        for (i = 0; i < mv88e6xxx_num_ports(chip); i++) {
                if (dsa_is_unused_port(ds, i)) {
                        err = mv88e6xxx_port_set_state(chip, i,
                                                       BR_STATE_DISABLED);
                        if (err)
                                goto unlock;

                        err = mv88e6xxx_serdes_power(chip, i, false);
                        if (err)
                                goto unlock;

                        continue;
                }

                err = mv88e6xxx_setup_port(chip, i);
                if (err)
                        goto unlock;
        }

        err = mv88e6xxx_irl_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_mac_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_phy_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_vtu_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_pvt_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_atu_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_broadcast_setup(chip, 0);
        if (err)
                goto unlock;

        err = mv88e6xxx_pot_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_rmu_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_rsvd2cpu_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_trunk_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_devmap_setup(chip);
        if (err)
                goto unlock;

        err = mv88e6xxx_pri_setup(chip);
        if (err)
                goto unlock;

        /* Setup PTP Hardware Clock and timestamping */
        if (chip->info->ptp_support) {
                err = mv88e6xxx_ptp_setup(chip);
                if (err)
                        goto unlock;

                err = mv88e6xxx_hwtstamp_setup(chip);
                if (err)
                        goto unlock;
        }

        err = mv88e6xxx_stats_setup(chip);
        if (err)
                goto unlock;

unlock:
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg)
{
        struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
        struct mv88e6xxx_chip *chip = mdio_bus->chip;
        u16 val;
        int err;

        if (!chip->info->ops->phy_read)
                return -EOPNOTSUPP;

        mutex_lock(&chip->reg_lock);
        err = chip->info->ops->phy_read(chip, bus, phy, reg, &val);
        mutex_unlock(&chip->reg_lock);

        if (reg == MII_PHYSID2) {
                /* Some internal PHYs don't have a model number. */
                if (chip->info->family != MV88E6XXX_FAMILY_6165)
                        /* Then there is the 6165 family. It gets is
                         * PHYs correct. But it can also have two
                         * SERDES interfaces in the PHY address
                         * space. And these don't have a model
                         * number. But they are not PHYs, so we don't
                         * want to give them something a PHY driver
                         * will recognise.
                         *
                         * Use the mv88e6390 family model number
                         * instead, for anything which really could be
                         * a PHY,
                         */
                        if (!(val & 0x3f0))
                                val |= MV88E6XXX_PORT_SWITCH_ID_PROD_6390 >> 4;
        }

        return err ? err : val;
}

static int mv88e6xxx_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
{
        struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
        struct mv88e6xxx_chip *chip = mdio_bus->chip;
        int err;

        if (!chip->info->ops->phy_write)
                return -EOPNOTSUPP;

        mutex_lock(&chip->reg_lock);
        err = chip->info->ops->phy_write(chip, bus, phy, reg, val);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,
                                   struct device_node *np,
                                   bool external)
{
        static int index;
        struct mv88e6xxx_mdio_bus *mdio_bus;
        struct mii_bus *bus;
        int err;

        if (external) {
                mutex_lock(&chip->reg_lock);
                err = mv88e6xxx_g2_scratch_gpio_set_smi(chip, true);
                mutex_unlock(&chip->reg_lock);

                if (err)
                        return err;
        }

        bus = devm_mdiobus_alloc_size(chip->dev, sizeof(*mdio_bus));
        if (!bus)
                return -ENOMEM;

        mdio_bus = bus->priv;
        mdio_bus->bus = bus;
        mdio_bus->chip = chip;
        INIT_LIST_HEAD(&mdio_bus->list);
        mdio_bus->external = external;

        if (np) {
                bus->name = np->full_name;
                snprintf(bus->id, MII_BUS_ID_SIZE, "%pOF", np);
        } else {
                bus->name = "mv88e6xxx SMI";
                snprintf(bus->id, MII_BUS_ID_SIZE, "mv88e6xxx-%d", index++);
        }

        bus->read = mv88e6xxx_mdio_read;
        bus->write = mv88e6xxx_mdio_write;
        bus->parent = chip->dev;

        if (!external) {
                err = mv88e6xxx_g2_irq_mdio_setup(chip, bus);
                if (err)
                        return err;
        }

        err = of_mdiobus_register(bus, np);
        if (err) {
                dev_err(chip->dev, "Cannot register MDIO bus (%d)\n", err);
                mv88e6xxx_g2_irq_mdio_free(chip, bus);
                return err;
        }

        if (external)
                list_add_tail(&mdio_bus->list, &chip->mdios);
        else
                list_add(&mdio_bus->list, &chip->mdios);

        return 0;
}

static const struct of_device_id mv88e6xxx_mdio_external_match[] = {
        { .compatible = "marvell,mv88e6xxx-mdio-external",
          .data = (void *)true },
        { },
};

static void mv88e6xxx_mdios_unregister(struct mv88e6xxx_chip *chip)

{
        struct mv88e6xxx_mdio_bus *mdio_bus;
        struct mii_bus *bus;

        list_for_each_entry(mdio_bus, &chip->mdios, list) {
                bus = mdio_bus->bus;

                if (!mdio_bus->external)
                        mv88e6xxx_g2_irq_mdio_free(chip, bus);

                mdiobus_unregister(bus);
        }
}

static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip,
                                    struct device_node *np)
{
        const struct of_device_id *match;
        struct device_node *child;
        int err;

        /* Always register one mdio bus for the internal/default mdio
         * bus. This maybe represented in the device tree, but is
         * optional.
         */
        child = of_get_child_by_name(np, "mdio");
        err = mv88e6xxx_mdio_register(chip, child, false);
        if (err)
                return err;

        /* Walk the device tree, and see if there are any other nodes
         * which say they are compatible with the external mdio
         * bus.
         */
        for_each_available_child_of_node(np, child) {
                match = of_match_node(mv88e6xxx_mdio_external_match, child);
                if (match) {
                        err = mv88e6xxx_mdio_register(chip, child, true);
                        if (err) {
                                mv88e6xxx_mdios_unregister(chip);
                                return err;
                        }
                }
        }

        return 0;
}

static int mv88e6xxx_get_eeprom_len(struct dsa_switch *ds)
{
        struct mv88e6xxx_chip *chip = ds->priv;

        return chip->eeprom_len;
}

static int mv88e6xxx_get_eeprom(struct dsa_switch *ds,
                                struct ethtool_eeprom *eeprom, u8 *data)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        if (!chip->info->ops->get_eeprom)
                return -EOPNOTSUPP;

        mutex_lock(&chip->reg_lock);
        err = chip->info->ops->get_eeprom(chip, eeprom, data);
        mutex_unlock(&chip->reg_lock);

        if (err)
                return err;

        eeprom->magic = 0xc3ec4951;

        return 0;
}

static int mv88e6xxx_set_eeprom(struct dsa_switch *ds,
                                struct ethtool_eeprom *eeprom, u8 *data)
{
        struct mv88e6xxx_chip *chip = ds->priv;
        int err;

        if (!chip->info->ops->set_eeprom)
                return -EOPNOTSUPP;

        if (eeprom->magic != 0xc3ec4951)
                return -EINVAL;

        mutex_lock(&chip->reg_lock);
        err = chip->info->ops->set_eeprom(chip, eeprom, data);
        mutex_unlock(&chip->reg_lock);

        return err;
}

static const struct mv88e6xxx_ops mv88e6085_ops = {
        /* MV88E6XXX_FAMILY_6097 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .irl_init_all = mv88e6352_g2_irl_init_all,
        .set_switch_mac = mv88e6xxx_g1_set_switch_mac,
        .phy_read = mv88e6185_phy_ppu_read,
        .phy_write = mv88e6185_phy_ppu_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_speed = mv88e6185_port_set_speed,
        .port_tag_remap = mv88e6095_port_tag_remap,
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
        .port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
        .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .port_link_state = mv88e6352_port_link_state,
        .port_get_cmode = mv88e6185_port_get_cmode,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
        .stats_set_histogram = mv88e6095_g1_stats_set_histogram,
        .stats_get_sset_count = mv88e6095_stats_get_sset_count,
        .stats_get_strings = mv88e6095_stats_get_strings,
        .stats_get_stats = mv88e6095_stats_get_stats,
        .set_cpu_port = mv88e6095_g1_set_cpu_port,
        .set_egress_port = mv88e6095_g1_set_egress_port,
        .watchdog_ops = &mv88e6097_watchdog_ops,
        .mgmt_rsvd2cpu = mv88e6352_g2_mgmt_rsvd2cpu,
        .pot_clear = mv88e6xxx_g2_pot_clear,
        .ppu_enable = mv88e6185_g1_ppu_enable,
        .ppu_disable = mv88e6185_g1_ppu_disable,
        .reset = mv88e6185_g1_reset,
        .rmu_disable = mv88e6085_g1_rmu_disable,
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
};

static const struct mv88e6xxx_ops mv88e6095_ops = {
        /* MV88E6XXX_FAMILY_6095 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .set_switch_mac = mv88e6xxx_g1_set_switch_mac,
        .phy_read = mv88e6185_phy_ppu_read,
        .phy_write = mv88e6185_phy_ppu_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_speed = mv88e6185_port_set_speed,
        .port_set_frame_mode = mv88e6085_port_set_frame_mode,
        .port_set_egress_floods = mv88e6185_port_set_egress_floods,
        .port_set_upstream_port = mv88e6095_port_set_upstream_port,
        .port_link_state = mv88e6185_port_link_state,
        .port_get_cmode = mv88e6185_port_get_cmode,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
        .stats_set_histogram = mv88e6095_g1_stats_set_histogram,
        .stats_get_sset_count = mv88e6095_stats_get_sset_count,
        .stats_get_strings = mv88e6095_stats_get_strings,
        .stats_get_stats = mv88e6095_stats_get_stats,
        .mgmt_rsvd2cpu = mv88e6185_g2_mgmt_rsvd2cpu,
        .ppu_enable = mv88e6185_g1_ppu_enable,
        .ppu_disable = mv88e6185_g1_ppu_disable,
        .reset = mv88e6185_g1_reset,
        .vtu_getnext = mv88e6185_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6185_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
};

static const struct mv88e6xxx_ops mv88e6097_ops = {
        /* MV88E6XXX_FAMILY_6097 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .irl_init_all = mv88e6352_g2_irl_init_all,
        .set_switch_mac = mv88e6xxx_g2_set_switch_mac,
        .phy_read = mv88e6xxx_g2_smi_phy_read,
        .phy_write = mv88e6xxx_g2_smi_phy_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_speed = mv88e6185_port_set_speed,
        .port_tag_remap = mv88e6095_port_tag_remap,
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
        .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
        .port_egress_rate_limiting = mv88e6095_port_egress_rate_limiting,
        .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .port_link_state = mv88e6352_port_link_state,
        .port_get_cmode = mv88e6185_port_get_cmode,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
        .stats_set_histogram = mv88e6095_g1_stats_set_histogram,
        .stats_get_sset_count = mv88e6095_stats_get_sset_count,
        .stats_get_strings = mv88e6095_stats_get_strings,
        .stats_get_stats = mv88e6095_stats_get_stats,
        .set_cpu_port = mv88e6095_g1_set_cpu_port,
        .set_egress_port = mv88e6095_g1_set_egress_port,
        .watchdog_ops = &mv88e6097_watchdog_ops,
        .mgmt_rsvd2cpu = mv88e6352_g2_mgmt_rsvd2cpu,
        .pot_clear = mv88e6xxx_g2_pot_clear,
        .reset = mv88e6352_g1_reset,
        .rmu_disable = mv88e6085_g1_rmu_disable,
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
};

static const struct mv88e6xxx_ops mv88e6123_ops = {
        /* MV88E6XXX_FAMILY_6165 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .irl_init_all = mv88e6352_g2_irl_init_all,
        .set_switch_mac = mv88e6xxx_g2_set_switch_mac,
        .phy_read = mv88e6xxx_g2_smi_phy_read,
        .phy_write = mv88e6xxx_g2_smi_phy_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_speed = mv88e6185_port_set_speed,
        .port_set_frame_mode = mv88e6085_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .port_link_state = mv88e6352_port_link_state,
        .port_get_cmode = mv88e6185_port_get_cmode,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
        .stats_set_histogram = mv88e6095_g1_stats_set_histogram,
        .stats_get_sset_count = mv88e6095_stats_get_sset_count,
        .stats_get_strings = mv88e6095_stats_get_strings,
        .stats_get_stats = mv88e6095_stats_get_stats,
        .set_cpu_port = mv88e6095_g1_set_cpu_port,
        .set_egress_port = mv88e6095_g1_set_egress_port,
        .watchdog_ops = &mv88e6097_watchdog_ops,
        .mgmt_rsvd2cpu = mv88e6352_g2_mgmt_rsvd2cpu,
        .pot_clear = mv88e6xxx_g2_pot_clear,
        .reset = mv88e6352_g1_reset,
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
};

static const struct mv88e6xxx_ops mv88e6131_ops = {
        /* MV88E6XXX_FAMILY_6185 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .set_switch_mac = mv88e6xxx_g1_set_switch_mac,
        .phy_read = mv88e6185_phy_ppu_read,
        .phy_write = mv88e6185_phy_ppu_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_speed = mv88e6185_port_set_speed,
        .port_tag_remap = mv88e6095_port_tag_remap,
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6185_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
        .port_set_upstream_port = mv88e6095_port_set_upstream_port,
        .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
        .port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
        .port_pause_limit = mv88e6097_port_pause_limit,
        .port_set_pause = mv88e6185_port_set_pause,
        .port_link_state = mv88e6352_port_link_state,
        .port_get_cmode = mv88e6185_port_get_cmode,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
        .stats_set_histogram = mv88e6095_g1_stats_set_histogram,
        .stats_get_sset_count = mv88e6095_stats_get_sset_count,
        .stats_get_strings = mv88e6095_stats_get_strings,
        .stats_get_stats = mv88e6095_stats_get_stats,
        .set_cpu_port = mv88e6095_g1_set_cpu_port,
        .set_egress_port = mv88e6095_g1_set_egress_port,
        .watchdog_ops = &mv88e6097_watchdog_ops,
        .mgmt_rsvd2cpu = mv88e6185_g2_mgmt_rsvd2cpu,
        .ppu_enable = mv88e6185_g1_ppu_enable,
        .set_cascade_port = mv88e6185_g1_set_cascade_port,
        .ppu_disable = mv88e6185_g1_ppu_disable,
        .reset = mv88e6185_g1_reset,
        .vtu_getnext = mv88e6185_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6185_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
};

static const struct mv88e6xxx_ops mv88e6141_ops = {
        /* MV88E6XXX_FAMILY_6341 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .irl_init_all = mv88e6352_g2_irl_init_all,
        .get_eeprom = mv88e6xxx_g2_get_eeprom8,
        .set_eeprom = mv88e6xxx_g2_set_eeprom8,
        .set_switch_mac = mv88e6xxx_g2_set_switch_mac,
        .phy_read = mv88e6xxx_g2_smi_phy_read,
        .phy_write = mv88e6xxx_g2_smi_phy_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_rgmii_delay = mv88e6390_port_set_rgmii_delay,
        .port_set_speed = mv88e6341_port_set_speed,
        .port_max_speed_mode = mv88e6341_port_max_speed_mode,
        .port_tag_remap = mv88e6095_port_tag_remap,
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
        .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
        .port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
        .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .port_link_state = mv88e6352_port_link_state,
        .port_get_cmode = mv88e6352_port_get_cmode,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,
        .stats_set_histogram = mv88e6095_g1_stats_set_histogram,
        .stats_get_sset_count = mv88e6320_stats_get_sset_count,
        .stats_get_strings = mv88e6320_stats_get_strings,
        .stats_get_stats = mv88e6390_stats_get_stats,
        .set_cpu_port = mv88e6390_g1_set_cpu_port,
        .set_egress_port = mv88e6390_g1_set_egress_port,
        .watchdog_ops = &mv88e6390_watchdog_ops,
        .mgmt_rsvd2cpu =  mv88e6390_g1_mgmt_rsvd2cpu,
        .pot_clear = mv88e6xxx_g2_pot_clear,
        .reset = mv88e6352_g1_reset,
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .serdes_power = mv88e6341_serdes_power,
        .gpio_ops = &mv88e6352_gpio_ops,
        .phylink_validate = mv88e6341_phylink_validate,
};

static const struct mv88e6xxx_ops mv88e6161_ops = {
        /* MV88E6XXX_FAMILY_6165 */
        .ieee_pri_map = mv88e6085_g1_ieee_pri_map,
        .ip_pri_map = mv88e6085_g1_ip_pri_map,
        .irl_init_all = mv88e6352_g2_irl_init_all,
        .set_switch_mac = mv88e6xxx_g2_set_switch_mac,
        .phy_read = mv88e6xxx_g2_smi_phy_read,
        .phy_write = mv88e6xxx_g2_smi_phy_write,
        .port_set_link = mv88e6xxx_port_set_link,
        .port_set_duplex = mv88e6xxx_port_set_duplex,
        .port_set_speed = mv88e6185_port_set_speed,
        .port_tag_remap = mv88e6095_port_tag_remap,
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,