/*
 * drivers/net/ethernet/mellanox/mlxsw/spectrum.c
 * Copyright (c) 2015-2017 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2015-2017 Jiri Pirko <jiri@mellanox.com>
 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/notifier.h>
#include <linux/dcbnl.h>
#include <linux/inetdevice.h>
#include <linux/netlink.h>
#include <net/switchdev.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_mirred.h>
#include <net/netevent.h>
#include <net/tc_act/tc_sample.h>
#include <net/addrconf.h>

#include "spectrum.h"
#include "pci.h"
#include "core.h"
#include "reg.h"
#include "port.h"
#include "trap.h"
#include "txheader.h"
#include "spectrum_cnt.h"
#include "spectrum_dpipe.h"
#include "spectrum_acl_flex_actions.h"
#include "../mlxfw/mlxfw.h"

#define MLXSW_FWREV_MAJOR 13
#define MLXSW_FWREV_MINOR 1530
#define MLXSW_FWREV_SUBMINOR 152

static const struct mlxsw_fw_rev mlxsw_sp_supported_fw_rev = {
        .major = MLXSW_FWREV_MAJOR,
        .minor = MLXSW_FWREV_MINOR,
        .subminor = MLXSW_FWREV_SUBMINOR
};

#define MLXSW_SP_FW_FILENAME \
        "mellanox/mlxsw_spectrum-" __stringify(MLXSW_FWREV_MAJOR) \
        "." __stringify(MLXSW_FWREV_MINOR) \
        "." __stringify(MLXSW_FWREV_SUBMINOR) ".mfa2"

static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
static const char mlxsw_sp_driver_version[] = "1.0";

/* tx_hdr_version
 * Tx header version.
 * Must be set to 1.
 */
MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);

/* tx_hdr_ctl
 * Packet control type.
 * 0 - Ethernet control (e.g. EMADs, LACP)
 * 1 - Ethernet data
 */
MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);

/* tx_hdr_proto
 * Packet protocol type. Must be set to 1 (Ethernet).
 */
MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);

/* tx_hdr_rx_is_router
 * Packet is sent from the router. Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);

/* tx_hdr_fid_valid
 * Indicates if the 'fid' field is valid and should be used for
 * forwarding lookup. Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);

/* tx_hdr_swid
 * Switch partition ID. Must be set to 0.
 */
MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);

/* tx_hdr_control_tclass
 * Indicates if the packet should use the control TClass and not one
 * of the data TClasses.
 */
MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);

/* tx_hdr_etclass
 * Egress TClass to be used on the egress device on the egress port.
 */
MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);

/* tx_hdr_port_mid
 * Destination local port for unicast packets.
 * Destination multicast ID for multicast packets.
 *
 * Control packets are directed to a specific egress port, while data
 * packets are transmitted through the CPU port (0) into the switch partition,
 * where forwarding rules are applied.
 */
MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);

/* tx_hdr_fid
 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
 * Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);

/* tx_hdr_type
 * 0 - Data packets
 * 6 - Control packets
 */
MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);

struct mlxsw_sp_mlxfw_dev {
        struct mlxfw_dev mlxfw_dev;
        struct mlxsw_sp *mlxsw_sp;
};

static int mlxsw_sp_component_query(struct mlxfw_dev *mlxfw_dev,
                                    u16 component_index, u32 *p_max_size,
                                    u8 *p_align_bits, u16 *p_max_write_size)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcqi_pl[MLXSW_REG_MCQI_LEN];
        int err;

        mlxsw_reg_mcqi_pack(mcqi_pl, component_index);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcqi), mcqi_pl);
        if (err)
                return err;
        mlxsw_reg_mcqi_unpack(mcqi_pl, p_max_size, p_align_bits,
                              p_max_write_size);

        *p_align_bits = max_t(u8, *p_align_bits, 2);
        *p_max_write_size = min_t(u16, *p_max_write_size,
                                  MLXSW_REG_MCDA_MAX_DATA_LEN);
        return 0;
}

static int mlxsw_sp_fsm_lock(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];
        u8 control_state;
        int err;

        mlxsw_reg_mcc_pack(mcc_pl, 0, 0, 0, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
        if (err)
                return err;

        mlxsw_reg_mcc_unpack(mcc_pl, fwhandle, NULL, &control_state);
        if (control_state != MLXFW_FSM_STATE_IDLE)
                return -EBUSY;

        mlxsw_reg_mcc_pack(mcc_pl,
                           MLXSW_REG_MCC_INSTRUCTION_LOCK_UPDATE_HANDLE,
                           0, *fwhandle, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_component_update(struct mlxfw_dev *mlxfw_dev,
                                         u32 fwhandle, u16 component_index,
                                         u32 component_size)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_UPDATE_COMPONENT,
                           component_index, fwhandle, component_size);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_block_download(struct mlxfw_dev *mlxfw_dev,
                                       u32 fwhandle, u8 *data, u16 size,
                                       u32 offset)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcda_pl[MLXSW_REG_MCDA_LEN];

        mlxsw_reg_mcda_pack(mcda_pl, fwhandle, offset, size, data);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcda), mcda_pl);
}

static int mlxsw_sp_fsm_component_verify(struct mlxfw_dev *mlxfw_dev,
                                         u32 fwhandle, u16 component_index)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_VERIFY_COMPONENT,
                           component_index, fwhandle, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_activate(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_ACTIVATE, 0,
                           fwhandle, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static int mlxsw_sp_fsm_query_state(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
                                    enum mlxfw_fsm_state *fsm_state,
                                    enum mlxfw_fsm_state_err *fsm_state_err)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];
        u8 control_state;
        u8 error_code;
        int err;

        mlxsw_reg_mcc_pack(mcc_pl, 0, 0, fwhandle, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
        if (err)
                return err;

        mlxsw_reg_mcc_unpack(mcc_pl, NULL, &error_code, &control_state);
        *fsm_state = control_state;
        *fsm_state_err = min_t(enum mlxfw_fsm_state_err, error_code,
                               MLXFW_FSM_STATE_ERR_MAX);
        return 0;
}

static void mlxsw_sp_fsm_cancel(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_CANCEL, 0,
                           fwhandle, 0);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static void mlxsw_sp_fsm_release(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
        struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
                container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
        char mcc_pl[MLXSW_REG_MCC_LEN];

        mlxsw_reg_mcc_pack(mcc_pl,
                           MLXSW_REG_MCC_INSTRUCTION_RELEASE_UPDATE_HANDLE, 0,
                           fwhandle, 0);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}

static const struct mlxfw_dev_ops mlxsw_sp_mlxfw_dev_ops = {
        .component_query        = mlxsw_sp_component_query,
        .fsm_lock               = mlxsw_sp_fsm_lock,
        .fsm_component_update   = mlxsw_sp_fsm_component_update,
        .fsm_block_download     = mlxsw_sp_fsm_block_download,
        .fsm_component_verify   = mlxsw_sp_fsm_component_verify,
        .fsm_activate           = mlxsw_sp_fsm_activate,
        .fsm_query_state        = mlxsw_sp_fsm_query_state,
        .fsm_cancel             = mlxsw_sp_fsm_cancel,
        .fsm_release            = mlxsw_sp_fsm_release
};

static int mlxsw_sp_firmware_flash(struct mlxsw_sp *mlxsw_sp,
                                   const struct firmware *firmware)
{
        struct mlxsw_sp_mlxfw_dev mlxsw_sp_mlxfw_dev = {
                .mlxfw_dev = {
                        .ops = &mlxsw_sp_mlxfw_dev_ops,
                        .psid = mlxsw_sp->bus_info->psid,
                        .psid_size = strlen(mlxsw_sp->bus_info->psid),
                },
                .mlxsw_sp = mlxsw_sp
        };

        return mlxfw_firmware_flash(&mlxsw_sp_mlxfw_dev.mlxfw_dev, firmware);
}

static bool mlxsw_sp_fw_rev_ge(const struct mlxsw_fw_rev *a,
                               const struct mlxsw_fw_rev *b)
{
        if (a->major != b->major)
                return a->major > b->major;
        if (a->minor != b->minor)
                return a->minor > b->minor;
        return a->subminor >= b->subminor;
}

static int mlxsw_sp_fw_rev_validate(struct mlxsw_sp *mlxsw_sp)
{
        const struct mlxsw_fw_rev *rev = &mlxsw_sp->bus_info->fw_rev;
        const struct firmware *firmware;
        int err;

        if (mlxsw_sp_fw_rev_ge(rev, &mlxsw_sp_supported_fw_rev))
                return 0;

        dev_info(mlxsw_sp->bus_info->dev, "The firmware version %d.%d.%d out of data\n",
                 rev->major, rev->minor, rev->subminor);
        dev_info(mlxsw_sp->bus_info->dev, "Upgrading firmware using file %s\n",
                 MLXSW_SP_FW_FILENAME);

        err = request_firmware_direct(&firmware, MLXSW_SP_FW_FILENAME,
                                      mlxsw_sp->bus_info->dev);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Could not request firmware file %s\n",
                        MLXSW_SP_FW_FILENAME);
                return err;
        }

        err = mlxsw_sp_firmware_flash(mlxsw_sp, firmware);
        release_firmware(firmware);
        return err;
}

int mlxsw_sp_flow_counter_get(struct mlxsw_sp *mlxsw_sp,
                              unsigned int counter_index, u64 *packets,
                              u64 *bytes)
{
        char mgpc_pl[MLXSW_REG_MGPC_LEN];
        int err;

        mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_NOP,
                            MLXSW_REG_FLOW_COUNTER_SET_TYPE_PACKETS_BYTES);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl);
        if (err)
                return err;
        if (packets)
                *packets = mlxsw_reg_mgpc_packet_counter_get(mgpc_pl);
        if (bytes)
                *bytes = mlxsw_reg_mgpc_byte_counter_get(mgpc_pl);
        return 0;
}

static int mlxsw_sp_flow_counter_clear(struct mlxsw_sp *mlxsw_sp,
                                       unsigned int counter_index)
{
        char mgpc_pl[MLXSW_REG_MGPC_LEN];

        mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_CLEAR,
                            MLXSW_REG_FLOW_COUNTER_SET_TYPE_PACKETS_BYTES);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl);
}

int mlxsw_sp_flow_counter_alloc(struct mlxsw_sp *mlxsw_sp,
                                unsigned int *p_counter_index)
{
        int err;

        err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
                                     p_counter_index);
        if (err)
                return err;
        err = mlxsw_sp_flow_counter_clear(mlxsw_sp, *p_counter_index);
        if (err)
                goto err_counter_clear;
        return 0;

err_counter_clear:
        mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
                              *p_counter_index);
        return err;
}

void mlxsw_sp_flow_counter_free(struct mlxsw_sp *mlxsw_sp,
                                unsigned int counter_index)
{
         mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
                               counter_index);
}

static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
                                     const struct mlxsw_tx_info *tx_info)
{
        char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);

        memset(txhdr, 0, MLXSW_TXHDR_LEN);

        mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
        mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
        mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
        mlxsw_tx_hdr_swid_set(txhdr, 0);
        mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
        mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
        mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
}

int mlxsw_sp_port_vid_stp_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid,
                              u8 state)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        enum mlxsw_reg_spms_state spms_state;
        char *spms_pl;
        int err;

        switch (state) {
        case BR_STATE_FORWARDING:
                spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
                break;
        case BR_STATE_LEARNING:
                spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
                break;
        case BR_STATE_LISTENING: /* fall-through */
        case BR_STATE_DISABLED: /* fall-through */
        case BR_STATE_BLOCKING:
                spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
                break;
        default:
                BUG();
        }

        spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
        if (!spms_pl)
                return -ENOMEM;
        mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);

        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
        kfree(spms_pl);
        return err;
}

static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
{
        char spad_pl[MLXSW_REG_SPAD_LEN] = {0};
        int err;

        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
        if (err)
                return err;
        mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
        return 0;
}

static int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
{
        int i;

        if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_SPAN))
                return -EIO;

        mlxsw_sp->span.entries_count = MLXSW_CORE_RES_GET(mlxsw_sp->core,
                                                          MAX_SPAN);
        mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
                                         sizeof(struct mlxsw_sp_span_entry),
                                         GFP_KERNEL);
        if (!mlxsw_sp->span.entries)
                return -ENOMEM;

        for (i = 0; i < mlxsw_sp->span.entries_count; i++)
                INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);

        return 0;
}

static void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
{
        int i;

        for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
                struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];

                WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
        }
        kfree(mlxsw_sp->span.entries);
}

static struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
{
        struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
        struct mlxsw_sp_span_entry *span_entry;
        char mpat_pl[MLXSW_REG_MPAT_LEN];
        u8 local_port = port->local_port;
        int index;
        int i;
        int err;

        /* find a free entry to use */
        index = -1;
        for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
                if (!mlxsw_sp->span.entries[i].used) {
                        index = i;
                        span_entry = &mlxsw_sp->span.entries[i];
                        break;
                }
        }
        if (index < 0)
                return NULL;

        /* create a new port analayzer entry for local_port */
        mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
        if (err)
                return NULL;

        span_entry->used = true;
        span_entry->id = index;
        span_entry->ref_count = 1;
        span_entry->local_port = local_port;
        return span_entry;
}

static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
                                        struct mlxsw_sp_span_entry *span_entry)
{
        u8 local_port = span_entry->local_port;
        char mpat_pl[MLXSW_REG_MPAT_LEN];
        int pa_id = span_entry->id;

        mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
        span_entry->used = false;
}

static struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
        int i;

        for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
                struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];

                if (curr->used && curr->local_port == local_port)
                        return curr;
        }
        return NULL;
}

static struct mlxsw_sp_span_entry
*mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
{
        struct mlxsw_sp_span_entry *span_entry;

        span_entry = mlxsw_sp_span_entry_find(port->mlxsw_sp,
                                              port->local_port);
        if (span_entry) {
                /* Already exists, just take a reference */
                span_entry->ref_count++;
                return span_entry;
        }

        return mlxsw_sp_span_entry_create(port);
}

static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
                                   struct mlxsw_sp_span_entry *span_entry)
{
        WARN_ON(!span_entry->ref_count);
        if (--span_entry->ref_count == 0)
                mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
        return 0;
}

static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
{
        struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
        struct mlxsw_sp_span_inspected_port *p;
        int i;

        for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
                struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];

                list_for_each_entry(p, &curr->bound_ports_list, list)
                        if (p->local_port == port->local_port &&
                            p->type == MLXSW_SP_SPAN_EGRESS)
                                return true;
        }

        return false;
}

static int mlxsw_sp_span_mtu_to_buffsize(const struct mlxsw_sp *mlxsw_sp,
                                         int mtu)
{
        return mlxsw_sp_bytes_cells(mlxsw_sp, mtu * 5 / 2) + 1;
}

static int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
{
        struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
        char sbib_pl[MLXSW_REG_SBIB_LEN];
        int err;

        /* If port is egress mirrored, the shared buffer size should be
         * updated according to the mtu value
         */
        if (mlxsw_sp_span_is_egress_mirror(port)) {
                u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp, mtu);

                mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
                err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
                if (err) {
                        netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
                        return err;
                }
        }

        return 0;
}

static struct mlxsw_sp_span_inspected_port *
mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
                                    struct mlxsw_sp_span_entry *span_entry)
{
        struct mlxsw_sp_span_inspected_port *p;

        list_for_each_entry(p, &span_entry->bound_ports_list, list)
                if (port->local_port == p->local_port)
                        return p;
        return NULL;
}

static int
mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
                                  struct mlxsw_sp_span_entry *span_entry,
                                  enum mlxsw_sp_span_type type)
{
        struct mlxsw_sp_span_inspected_port *inspected_port;
        struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
        char mpar_pl[MLXSW_REG_MPAR_LEN];
        char sbib_pl[MLXSW_REG_SBIB_LEN];
        int pa_id = span_entry->id;
        int err;

        /* if it is an egress SPAN, bind a shared buffer to it */
        if (type == MLXSW_SP_SPAN_EGRESS) {
                u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp,
                                                             port->dev->mtu);

                mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
                err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
                if (err) {
                        netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
                        return err;
                }
        }

        /* bind the port to the SPAN entry */
        mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
                            (enum mlxsw_reg_mpar_i_e) type, true, pa_id);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
        if (err)
                goto err_mpar_reg_write;

        inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
        if (!inspected_port) {
                err = -ENOMEM;
                goto err_inspected_port_alloc;
        }
        inspected_port->local_port = port->local_port;
        inspected_port->type = type;
        list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);

        return 0;

err_mpar_reg_write:
err_inspected_port_alloc:
        if (type == MLXSW_SP_SPAN_EGRESS) {
                mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
                mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
        }
        return err;
}

static void
mlxsw_sp_span_inspected_port_unbind(struct mlxsw_sp_port *port,
                                    struct mlxsw_sp_span_entry *span_entry,
                                    enum mlxsw_sp_span_type type)
{
        struct mlxsw_sp_span_inspected_port *inspected_port;
        struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
        char mpar_pl[MLXSW_REG_MPAR_LEN];
        char sbib_pl[MLXSW_REG_SBIB_LEN];
        int pa_id = span_entry->id;

        inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
        if (!inspected_port)
                return;

        /* remove the inspected port */
        mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
                            (enum mlxsw_reg_mpar_i_e) type, false, pa_id);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);

        /* remove the SBIB buffer if it was egress SPAN */
        if (type == MLXSW_SP_SPAN_EGRESS) {
                mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
                mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
        }

        mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);

        list_del(&inspected_port->list);
        kfree(inspected_port);
}

static int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
                                    struct mlxsw_sp_port *to,
                                    enum mlxsw_sp_span_type type)
{
        struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
        struct mlxsw_sp_span_entry *span_entry;
        int err;

        span_entry = mlxsw_sp_span_entry_get(to);
        if (!span_entry)
                return -ENOENT;

        netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
                   span_entry->id);

        err = mlxsw_sp_span_inspected_port_bind(from, span_entry, type);
        if (err)
                goto err_port_bind;

        return 0;

err_port_bind:
        mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
        return err;
}

static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from,
                                        u8 destination_port,
                                        enum mlxsw_sp_span_type type)
{
        struct mlxsw_sp_span_entry *span_entry;

        span_entry = mlxsw_sp_span_entry_find(from->mlxsw_sp,
                                              destination_port);
        if (!span_entry) {
                netdev_err(from->dev, "no span entry found\n");
                return;
        }

        netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
                   span_entry->id);
        mlxsw_sp_span_inspected_port_unbind(from, span_entry, type);
}

static int mlxsw_sp_port_sample_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                    bool enable, u32 rate)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char mpsc_pl[MLXSW_REG_MPSC_LEN];

        mlxsw_reg_mpsc_pack(mpsc_pl, mlxsw_sp_port->local_port, enable, rate);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpsc), mpsc_pl);
}

static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                          bool is_up)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char paos_pl[MLXSW_REG_PAOS_LEN];

        mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
                            is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
                            MLXSW_PORT_ADMIN_STATUS_DOWN);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
}

static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                      unsigned char *addr)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char ppad_pl[MLXSW_REG_PPAD_LEN];

        mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
        mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
}

static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        unsigned char *addr = mlxsw_sp_port->dev->dev_addr;

        ether_addr_copy(addr, mlxsw_sp->base_mac);
        addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
        return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
}

static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pmtu_pl[MLXSW_REG_PMTU_LEN];
        int max_mtu;
        int err;

        mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
        mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
        if (err)
                return err;
        max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);

        if (mtu > max_mtu)
                return -EINVAL;

        mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
}

static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pspa_pl[MLXSW_REG_PSPA_LEN];

        mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
}

int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port, bool enable)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char svpe_pl[MLXSW_REG_SVPE_LEN];

        mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
}

int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid,
                                   bool learn_enable)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char *spvmlr_pl;
        int err;

        spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
        if (!spvmlr_pl)
                return -ENOMEM;
        mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
                              learn_enable);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
        kfree(spvmlr_pl);
        return err;
}

static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                    u16 vid)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char spvid_pl[MLXSW_REG_SPVID_LEN];

        mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
}

static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                            bool allow)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char spaft_pl[MLXSW_REG_SPAFT_LEN];

        mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
}

int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
        int err;

        if (!vid) {
                err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
                if (err)
                        return err;
        } else {
                err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
                if (err)
                        return err;
                err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, true);
                if (err)
                        goto err_port_allow_untagged_set;
        }

        mlxsw_sp_port->pvid = vid;
        return 0;

err_port_allow_untagged_set:
        __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
        return err;
}

static int
mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char sspr_pl[MLXSW_REG_SSPR_LEN];

        mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
}

static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
                                         u8 local_port, u8 *p_module,
                                         u8 *p_width, u8 *p_lane)
{
        char pmlp_pl[MLXSW_REG_PMLP_LEN];
        int err;

        mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
        if (err)
                return err;
        *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
        *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
        *p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
        return 0;
}

static int mlxsw_sp_port_module_map(struct mlxsw_sp_port *mlxsw_sp_port,
                                    u8 module, u8 width, u8 lane)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pmlp_pl[MLXSW_REG_PMLP_LEN];
        int i;

        mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_pmlp_width_set(pmlp_pl, width);
        for (i = 0; i < width; i++) {
                mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
                mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i);  /* Rx & Tx */
        }

        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}

static int mlxsw_sp_port_module_unmap(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char pmlp_pl[MLXSW_REG_PMLP_LEN];

        mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);

}

static int mlxsw_sp_port_open(struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        int err;

        err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
        if (err)
                return err;
        netif_start_queue(dev);
        return 0;
}

static int mlxsw_sp_port_stop(struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        netif_stop_queue(dev);
        return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
}

static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
                                      struct net_device *dev)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
        const struct mlxsw_tx_info tx_info = {
                .local_port = mlxsw_sp_port->local_port,
                .is_emad = false,
        };
        u64 len;
        int err;

        if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
                return NETDEV_TX_BUSY;

        if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
                struct sk_buff *skb_orig = skb;

                skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
                if (!skb) {
                        this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
                        dev_kfree_skb_any(skb_orig);
                        return NETDEV_TX_OK;
                }
                dev_consume_skb_any(skb_orig);
        }

        if (eth_skb_pad(skb)) {
                this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
                return NETDEV_TX_OK;
        }

        mlxsw_sp_txhdr_construct(skb, &tx_info);
        /* TX header is consumed by HW on the way so we shouldn't count its
         * bytes as being sent.
         */
        len = skb->len - MLXSW_TXHDR_LEN;

        /* Due to a race we might fail here because of a full queue. In that
         * unlikely case we simply drop the packet.
         */
        err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);

        if (!err) {
                pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
                u64_stats_update_begin(&pcpu_stats->syncp);
                pcpu_stats->tx_packets++;
                pcpu_stats->tx_bytes += len;
                u64_stats_update_end(&pcpu_stats->syncp);
        } else {
                this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
                dev_kfree_skb_any(skb);
        }
        return NETDEV_TX_OK;
}

static void mlxsw_sp_set_rx_mode(struct net_device *dev)
{
}

static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct sockaddr *addr = p;
        int err;

        if (!is_valid_ether_addr(addr->sa_data))
                return -EADDRNOTAVAIL;

        err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
        if (err)
                return err;
        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
        return 0;
}

static u16 mlxsw_sp_pg_buf_threshold_get(const struct mlxsw_sp *mlxsw_sp,
                                         int mtu)
{
        return 2 * mlxsw_sp_bytes_cells(mlxsw_sp, mtu);
}

#define MLXSW_SP_CELL_FACTOR 2  /* 2 * cell_size / (IPG + cell_size + 1) */

static u16 mlxsw_sp_pfc_delay_get(const struct mlxsw_sp *mlxsw_sp, int mtu,
                                  u16 delay)
{
        delay = mlxsw_sp_bytes_cells(mlxsw_sp, DIV_ROUND_UP(delay,
                                                            BITS_PER_BYTE));
        return MLXSW_SP_CELL_FACTOR * delay + mlxsw_sp_bytes_cells(mlxsw_sp,
                                                                   mtu);
}

/* Maximum delay buffer needed in case of PAUSE frames, in bytes.
 * Assumes 100m cable and maximum MTU.
 */
#define MLXSW_SP_PAUSE_DELAY 58752

static u16 mlxsw_sp_pg_buf_delay_get(const struct mlxsw_sp *mlxsw_sp, int mtu,
                                     u16 delay, bool pfc, bool pause)
{
        if (pfc)
                return mlxsw_sp_pfc_delay_get(mlxsw_sp, mtu, delay);
        else if (pause)
                return mlxsw_sp_bytes_cells(mlxsw_sp, MLXSW_SP_PAUSE_DELAY);
        else
                return 0;
}

static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int index, u16 size, u16 thres,
                                 bool lossy)
{
        if (lossy)
                mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, index, size);
        else
                mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, index, size,
                                                    thres);
}

int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
                                 u8 *prio_tc, bool pause_en,
                                 struct ieee_pfc *my_pfc)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
        u16 delay = !!my_pfc ? my_pfc->delay : 0;
        char pbmc_pl[MLXSW_REG_PBMC_LEN];
        int i, j, err;

        mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
        if (err)
                return err;

        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                bool configure = false;
                bool pfc = false;
                bool lossy;
                u16 thres;

                for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
                        if (prio_tc[j] == i) {
                                pfc = pfc_en & BIT(j);
                                configure = true;
                                break;
                        }
                }

                if (!configure)
                        continue;

                lossy = !(pfc || pause_en);
                thres = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, mtu);
                delay = mlxsw_sp_pg_buf_delay_get(mlxsw_sp, mtu, delay, pfc,
                                                  pause_en);
                mlxsw_sp_pg_buf_pack(pbmc_pl, i, thres + delay, thres, lossy);
        }

        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
}

static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                      int mtu, bool pause_en)
{
        u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
        bool dcb_en = !!mlxsw_sp_port->dcb.ets;
        struct ieee_pfc *my_pfc;
        u8 *prio_tc;

        prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
        my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;

        return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
                                            pause_en, my_pfc);
}

static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
        int err;

        err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
        if (err)
                return err;
        err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
        if (err)
                goto err_span_port_mtu_update;
        err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
        if (err)
                goto err_port_mtu_set;
        dev->mtu = mtu;
        return 0;

err_port_mtu_set:
        mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
err_span_port_mtu_update:
        mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
        return err;
}

static int
mlxsw_sp_port_get_sw_stats64(const struct net_device *dev,
                             struct rtnl_link_stats64 *stats)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp_port_pcpu_stats *p;
        u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
        u32 tx_dropped = 0;
        unsigned int start;
        int i;

        for_each_possible_cpu(i) {
                p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
                do {
                        start = u64_stats_fetch_begin_irq(&p->syncp);
                        rx_packets      = p->rx_packets;
                        rx_bytes        = p->rx_bytes;
                        tx_packets      = p->tx_packets;
                        tx_bytes        = p->tx_bytes;
                } while (u64_stats_fetch_retry_irq(&p->syncp, start));

                stats->rx_packets       += rx_packets;
                stats->rx_bytes         += rx_bytes;
                stats->tx_packets       += tx_packets;
                stats->tx_bytes         += tx_bytes;
                /* tx_dropped is u32, updated without syncp protection. */
                tx_dropped      += p->tx_dropped;
        }
        stats->tx_dropped       = tx_dropped;
        return 0;
}

static bool mlxsw_sp_port_has_offload_stats(const struct net_device *dev, int attr_id)
{
        switch (attr_id) {
        case IFLA_OFFLOAD_XSTATS_CPU_HIT:
                return true;
        }

        return false;
}

static int mlxsw_sp_port_get_offload_stats(int attr_id, const struct net_device *dev,
                                           void *sp)
{
        switch (attr_id) {
        case IFLA_OFFLOAD_XSTATS_CPU_HIT:
                return mlxsw_sp_port_get_sw_stats64(dev, sp);
        }

        return -EINVAL;
}

static int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
                                       int prio, char *ppcnt_pl)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

        mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
        return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
}

static int mlxsw_sp_port_get_hw_stats(struct net_device *dev,
                                      struct rtnl_link_stats64 *stats)
{
        char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
        int err;

        err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT,
                                          0, ppcnt_pl);
        if (err)
                goto out;

        stats->tx_packets =
                mlxsw_reg_ppcnt_a_frames_transmitted_ok_get(ppcnt_pl);
        stats->rx_packets =
                mlxsw_reg_ppcnt_a_frames_received_ok_get(ppcnt_pl);
        stats->tx_bytes =
                mlxsw_reg_ppcnt_a_octets_transmitted_ok_get(ppcnt_pl);
        stats->rx_bytes =
                mlxsw_reg_ppcnt_a_octets_received_ok_get(ppcnt_pl);
        stats->multicast =
                mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get(ppcnt_pl);

        stats->rx_crc_errors =
                mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get(ppcnt_pl);
        stats->rx_frame_errors =
                mlxsw_reg_ppcnt_a_alignment_errors_get(ppcnt_pl);

        stats->rx_length_errors = (
                mlxsw_reg_ppcnt_a_in_range_length_errors_get(ppcnt_pl) +
                mlxsw_reg_ppcnt_a_out_of_range_length_field_get(ppcnt_pl) +
                mlxsw_reg_ppcnt_a_frame_too_long_errors_get(ppcnt_pl));

        stats->rx_errors = (stats->rx_crc_errors +
                stats->rx_frame_errors + stats->rx_length_errors);

out:
        return err;
}

static void
mlxsw_sp_port_get_hw_xstats(struct net_device *dev,
                            struct mlxsw_sp_port_xstats *xstats)
{
        char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
        int err, i;

        err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_EXT_CNT, 0,
                                          ppcnt_pl);
        if (!err)
                xstats->ecn = mlxsw_reg_ppcnt_ecn_marked_get(ppcnt_pl);

        for (i = 0; i < TC_MAX_QUEUE; i++) {
                err = mlxsw_sp_port_get_stats_raw(dev,
                                                  MLXSW_REG_PPCNT_TC_CONG_TC,
                                                  i, ppcnt_pl);
                if (!err)
                        xstats->wred_drop[i] =
                                mlxsw_reg_ppcnt_wred_discard_get(ppcnt_pl);

                err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_TC_CNT,
                                                  i, ppcnt_pl);
                if (err)
                        continue;

                xstats->backlog[i] =
                        mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
                xstats->tail_drop[i] =
                        mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get(ppcnt_pl);
        }
}

static void update_stats_cache(struct work_struct *work)
{
        struct mlxsw_sp_port *mlxsw_sp_port =
                container_of(work, struct mlxsw_sp_port,
                             periodic_hw_stats.update_dw.work);

        if (!netif_carrier_ok(mlxsw_sp_port->dev))
                goto out;

        mlxsw_sp_port_get_hw_stats(mlxsw_sp_port->dev,
                                   &mlxsw_sp_port->periodic_hw_stats.stats);
        mlxsw_sp_port_get_hw_xstats(mlxsw_sp_port->dev,
                                    &mlxsw_sp_port->periodic_hw_stats.xstats);

out:
        mlxsw_core_schedule_dw(&mlxsw_sp_port->periodic_hw_stats.update_dw,
                               MLXSW_HW_STATS_UPDATE_TIME);
}

/* Return the stats from a cache that is updated periodically,
 * as this function might get called in an atomic context.
 */
static void
mlxsw_sp_port_get_stats64(struct net_device *dev,
                          struct rtnl_link_stats64 *stats)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        memcpy(stats, &mlxsw_sp_port->periodic_hw_stats.stats, sizeof(*stats));
}

static int __mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                    u16 vid_begin, u16 vid_end,
                                    bool is_member, bool untagged)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char *spvm_pl;
        int err;

        spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
        if (!spvm_pl)
                return -ENOMEM;

        mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
                            vid_end, is_member, untagged);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
        kfree(spvm_pl);
        return err;
}

int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
                           u16 vid_end, bool is_member, bool untagged)
{
        u16 vid, vid_e;
        int err;

        for (vid = vid_begin; vid <= vid_end;
             vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
                vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
                            vid_end);

                err = __mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
                                               is_member, untagged);
                if (err)
                        return err;
        }

        return 0;
}

static void mlxsw_sp_port_vlan_flush(struct mlxsw_sp_port *mlxsw_sp_port)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, *tmp;

        list_for_each_entry_safe(mlxsw_sp_port_vlan, tmp,
                                 &mlxsw_sp_port->vlans_list, list)
                mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
}

static struct mlxsw_sp_port_vlan *
mlxsw_sp_port_vlan_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
        bool untagged = vid == 1;
        int err;

        err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true, untagged);
        if (err)
                return ERR_PTR(err);

        mlxsw_sp_port_vlan = kzalloc(sizeof(*mlxsw_sp_port_vlan), GFP_KERNEL);
        if (!mlxsw_sp_port_vlan) {
                err = -ENOMEM;
                goto err_port_vlan_alloc;
        }

        mlxsw_sp_port_vlan->mlxsw_sp_port = mlxsw_sp_port;
        mlxsw_sp_port_vlan->vid = vid;
        list_add(&mlxsw_sp_port_vlan->list, &mlxsw_sp_port->vlans_list);

        return mlxsw_sp_port_vlan;

err_port_vlan_alloc:
        mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
        return ERR_PTR(err);
}

static void
mlxsw_sp_port_vlan_destroy(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
        struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
        u16 vid = mlxsw_sp_port_vlan->vid;

        list_del(&mlxsw_sp_port_vlan->list);
        kfree(mlxsw_sp_port_vlan);
        mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
}

struct mlxsw_sp_port_vlan *
mlxsw_sp_port_vlan_get(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;

        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
        if (mlxsw_sp_port_vlan)
                return mlxsw_sp_port_vlan;

        return mlxsw_sp_port_vlan_create(mlxsw_sp_port, vid);
}

void mlxsw_sp_port_vlan_put(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
        struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;

        if (mlxsw_sp_port_vlan->bridge_port)
                mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
        else if (fid)
                mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);

        mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan);
}

static int mlxsw_sp_port_add_vid(struct net_device *dev,
                                 __be16 __always_unused proto, u16 vid)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        /* VLAN 0 is added to HW filter when device goes up, but it is
         * reserved in our case, so simply return.
         */
        if (!vid)
                return 0;

        return PTR_ERR_OR_ZERO(mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid));
}

static int mlxsw_sp_port_kill_vid(struct net_device *dev,
                                  __be16 __always_unused proto, u16 vid)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;

        /* VLAN 0 is removed from HW filter when device goes down, but
         * it is reserved in our case, so simply return.
         */
        if (!vid)
                return 0;

        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
        if (!mlxsw_sp_port_vlan)
                return 0;
        mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);

        return 0;
}

static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
                                            size_t len)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        u8 module = mlxsw_sp_port->mapping.module;
        u8 width = mlxsw_sp_port->mapping.width;
        u8 lane = mlxsw_sp_port->mapping.lane;
        int err;

        if (!mlxsw_sp_port->split)
                err = snprintf(name, len, "p%d", module + 1);
        else
                err = snprintf(name, len, "p%ds%d", module + 1,
                               lane / width);

        if (err >= len)
                return -EINVAL;

        return 0;
}

static struct mlxsw_sp_port_mall_tc_entry *
mlxsw_sp_port_mall_tc_entry_find(struct mlxsw_sp_port *port,
                                 unsigned long cookie) {
        struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;

        list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
                if (mall_tc_entry->cookie == cookie)
                        return mall_tc_entry;

        return NULL;
}

static int
mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
                                      struct mlxsw_sp_port_mall_mirror_tc_entry *mirror,
                                      const struct tc_action *a,
                                      bool ingress)
{
        struct net *net = dev_net(mlxsw_sp_port->dev);
        enum mlxsw_sp_span_type span_type;
        struct mlxsw_sp_port *to_port;
        struct net_device *to_dev;
        int ifindex;

        ifindex = tcf_mirred_ifindex(a);
        to_dev = __dev_get_by_index(net, ifindex);
        if (!to_dev) {
                netdev_err(mlxsw_sp_port->dev, "Could not find requested device\n");
                return -EINVAL;
        }

        if (!mlxsw_sp_port_dev_check(to_dev)) {
                netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
                return -EOPNOTSUPP;
        }
        to_port = netdev_priv(to_dev);

        mirror->to_local_port = to_port->local_port;
        mirror->ingress = ingress;
        span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
        return mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
}

static void
mlxsw_sp_port_del_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
                                      struct mlxsw_sp_port_mall_mirror_tc_entry *mirror)
{
        enum mlxsw_sp_span_type span_type;

        span_type = mirror->ingress ?
                        MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
        mlxsw_sp_span_mirror_remove(mlxsw_sp_port, mirror->to_local_port,
                                    span_type);
}

static int
mlxsw_sp_port_add_cls_matchall_sample(struct mlxsw_sp_port *mlxsw_sp_port,
                                      struct tc_cls_matchall_offload *cls,
                                      const struct tc_action *a,
                                      bool ingress)
{
        int err;

        if (!mlxsw_sp_port->sample)
                return -EOPNOTSUPP;
        if (rtnl_dereference(mlxsw_sp_port->sample->psample_group)) {
                netdev_err(mlxsw_sp_port->dev, "sample already active\n");
                return -EEXIST;
        }
        if (tcf_sample_rate(a) > MLXSW_REG_MPSC_RATE_MAX) {
                netdev_err(mlxsw_sp_port->dev, "sample rate not supported\n");
                return -EOPNOTSUPP;
        }

        rcu_assign_pointer(mlxsw_sp_port->sample->psample_group,
                           tcf_sample_psample_group(a));
        mlxsw_sp_port->sample->truncate = tcf_sample_truncate(a);
        mlxsw_sp_port->sample->trunc_size = tcf_sample_trunc_size(a);
        mlxsw_sp_port->sample->rate = tcf_sample_rate(a);

        err = mlxsw_sp_port_sample_set(mlxsw_sp_port, true, tcf_sample_rate(a));
        if (err)
                goto err_port_sample_set;
        return 0;

err_port_sample_set:
        RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL);
        return err;
}

static void
mlxsw_sp_port_del_cls_matchall_sample(struct mlxsw_sp_port *mlxsw_sp_port)
{
        if (!mlxsw_sp_port->sample)
                return;

        mlxsw_sp_port_sample_set(mlxsw_sp_port, false, 1);
        RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL);
}

static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
                                          struct tc_cls_matchall_offload *f,
                                          bool ingress)
{
        struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
        __be16 protocol = f->common.protocol;
        const struct tc_action *a;
        LIST_HEAD(actions);
        int err;

        if (!tcf_exts_has_one_action(f->exts)) {
                netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
                return -EOPNOTSUPP;
        }

        mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
        if (!mall_tc_entry)
                return -ENOMEM;
        mall_tc_entry->cookie = f->cookie;

        tcf_exts_to_list(f->exts, &actions);
        a = list_first_entry(&actions, struct tc_action, list);

        if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
                struct mlxsw_sp_port_mall_mirror_tc_entry *mirror;

                mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
                mirror = &mall_tc_entry->mirror;
                err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port,
                                                            mirror, a, ingress);
        } else if (is_tcf_sample(a) && protocol == htons(ETH_P_ALL)) {
                mall_tc_entry->type = MLXSW_SP_PORT_MALL_SAMPLE;
                err = mlxsw_sp_port_add_cls_matchall_sample(mlxsw_sp_port, f,
                                                            a, ingress);
        } else {
                err = -EOPNOTSUPP;
        }

        if (err)
                goto err_add_action;

        list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
        return 0;

err_add_action:
        kfree(mall_tc_entry);
        return err;
}

static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
                                           struct tc_cls_matchall_offload *f)
{
        struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;

        mall_tc_entry = mlxsw_sp_port_mall_tc_entry_find(mlxsw_sp_port,
                                                         f->cookie);
        if (!mall_tc_entry) {
                netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
                return;
        }
        list_del(&mall_tc_entry->list);

        switch (mall_tc_entry->type) {
        case MLXSW_SP_PORT_MALL_MIRROR:
                mlxsw_sp_port_del_cls_matchall_mirror(mlxsw_sp_port,
                                                      &mall_tc_entry->mirror);
                break;
        case MLXSW_SP_PORT_MALL_SAMPLE:
                mlxsw_sp_port_del_cls_matchall_sample(mlxsw_sp_port);
                break;
        default:
                WARN_ON(1);
        }

        kfree(mall_tc_entry);
}

static int mlxsw_sp_setup_tc_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
                                          struct tc_cls_matchall_offload *f,
                                          bool ingress)
{
        if (f->common.chain_index)
                return -EOPNOTSUPP;

        switch (f->command) {
        case TC_CLSMATCHALL_REPLACE:
                return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port, f,
                                                      ingress);
        case TC_CLSMATCHALL_DESTROY:
                mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port, f);
                return 0;
        default:
                return -EOPNOTSUPP;
        }
}

static int
mlxsw_sp_setup_tc_cls_flower(struct mlxsw_sp_port *mlxsw_sp_port,
                             struct tc_cls_flower_offload *f,
                             bool ingress)
{
        switch (f->command) {
        case TC_CLSFLOWER_REPLACE:
                return mlxsw_sp_flower_replace(mlxsw_sp_port, ingress, f);
        case TC_CLSFLOWER_DESTROY:
                mlxsw_sp_flower_destroy(mlxsw_sp_port, ingress, f);
                return 0;
        case TC_CLSFLOWER_STATS:
                return mlxsw_sp_flower_stats(mlxsw_sp_port, ingress, f);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlxsw_sp_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
                                      void *cb_priv, bool ingress)
{
        struct mlxsw_sp_port *mlxsw_sp_port = cb_priv;

        if (!tc_can_offload(mlxsw_sp_port->dev))
                return -EOPNOTSUPP;

        switch (type) {
        case TC_SETUP_CLSMATCHALL:
                return mlxsw_sp_setup_tc_cls_matchall(mlxsw_sp_port, type_data,
                                                      ingress);
        case TC_SETUP_CLSFLOWER:
                return mlxsw_sp_setup_tc_cls_flower(mlxsw_sp_port, type_data,
                                                    ingress);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlxsw_sp_setup_tc_block_cb_ig(enum tc_setup_type type,
                                         void *type_data, void *cb_priv)
{
        return mlxsw_sp_setup_tc_block_cb(type, type_data, cb_priv, true);
}

static int mlxsw_sp_setup_tc_block_cb_eg(enum tc_setup_type type,
                                         void *type_data, void *cb_priv)
{
        return mlxsw_sp_setup_tc_block_cb(type, type_data, cb_priv, false);
}

static int mlxsw_sp_setup_tc_block(struct mlxsw_sp_port *mlxsw_sp_port,
                                   struct tc_block_offload *f)
{
        tc_setup_cb_t *cb;

        if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
                cb = mlxsw_sp_setup_tc_block_cb_ig;
        else if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
                cb = mlxsw_sp_setup_tc_block_cb_eg;
        else
                return -EOPNOTSUPP;

        switch (f->command) {
        case TC_BLOCK_BIND:
                return tcf_block_cb_register(f->block, cb, mlxsw_sp_port,
                                             mlxsw_sp_port);
        case TC_BLOCK_UNBIND:
                tcf_block_cb_unregister(f->block, cb, mlxsw_sp_port);
                return 0;
        default:
                return -EOPNOTSUPP;
        }
}

static int mlxsw_sp_setup_tc(struct net_device *dev, enum tc_setup_type type,
                             void *type_data)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        switch (type) {
        case TC_SETUP_BLOCK:
                return mlxsw_sp_setup_tc_block(mlxsw_sp_port, type_data);
        case TC_SETUP_QDISC_RED:
                return mlxsw_sp_setup_tc_red(mlxsw_sp_port, type_data);
        default:
                return -EOPNOTSUPP;
        }
}

static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
        .ndo_open               = mlxsw_sp_port_open,
        .ndo_stop               = mlxsw_sp_port_stop,
        .ndo_start_xmit         = mlxsw_sp_port_xmit,
        .ndo_setup_tc           = mlxsw_sp_setup_tc,
        .ndo_set_rx_mode        = mlxsw_sp_set_rx_mode,
        .ndo_set_mac_address    = mlxsw_sp_port_set_mac_address,
        .ndo_change_mtu         = mlxsw_sp_port_change_mtu,
        .ndo_get_stats64        = mlxsw_sp_port_get_stats64,
        .ndo_has_offload_stats  = mlxsw_sp_port_has_offload_stats,
        .ndo_get_offload_stats  = mlxsw_sp_port_get_offload_stats,
        .ndo_vlan_rx_add_vid    = mlxsw_sp_port_add_vid,
        .ndo_vlan_rx_kill_vid   = mlxsw_sp_port_kill_vid,
        .ndo_get_phys_port_name = mlxsw_sp_port_get_phys_port_name,
};

static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
                                      struct ethtool_drvinfo *drvinfo)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

        strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
        strlcpy(drvinfo->version, mlxsw_sp_driver_version,
                sizeof(drvinfo->version));
        snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
                 "%d.%d.%d",
                 mlxsw_sp->bus_info->fw_rev.major,
                 mlxsw_sp->bus_info->fw_rev.minor,
                 mlxsw_sp->bus_info->fw_rev.subminor);
        strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
                sizeof(drvinfo->bus_info));
}

static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
                                         struct ethtool_pauseparam *pause)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

        pause->rx_pause = mlxsw_sp_port->link.rx_pause;
        pause->tx_pause = mlxsw_sp_port->link.tx_pause;
}

static int mlxsw_sp_port_pause_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                   struct ethtool_pauseparam *pause)
{
        char pfcc_pl[MLXSW_REG_PFCC_LEN];

        mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
        mlxsw_reg_pfcc_pprx_set(pfcc_pl, pause->rx_pause);
        mlxsw_reg_pfcc_pptx_set(pfcc_pl, pause->tx_pause);

        return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
                               pfcc_pl);
}

static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
                                        struct ethtool_pauseparam *pause)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        bool pause_en = pause->tx_pause || pause->rx_pause;
        int err;

        if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
                netdev_err(dev, "PFC already enabled on port\n");
                return -EINVAL;
        }

        if (pause->autoneg) {
                netdev_err(dev, "PAUSE frames autonegotiation isn't supported\n");
                return -EINVAL;
        }

        err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
        if (err) {
                netdev_err(dev, "Failed to configure port's headroom\n");
                return err;
        }

        err = mlxsw_sp_port_pause_set(mlxsw_sp_port, pause);
        if (err) {
                netdev_err(dev, "Failed to set PAUSE parameters\n");
                goto err_port_pause_configure;
        }

        mlxsw_sp_port->link.rx_pause = pause->rx_pause;
        mlxsw_sp_port->link.tx_pause = pause->tx_pause;

        return 0;

err_port_pause_configure:
        pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
        mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
        return err;
}

struct mlxsw_sp_port_hw_stats {
        char str[ETH_GSTRING_LEN];
        u64 (*getter)(const char *payload);
        bool cells_bytes;
};

static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
        {
                .str = "a_frames_transmitted_ok",
                .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
        },
        {
                .str = "a_frames_received_ok",
                .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
        },
        {
                .str = "a_frame_check_sequence_errors",
                .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
        },
        {
                .str = "a_alignment_errors",
                .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
        },
        {
                .str = "a_octets_transmitted_ok",
                .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
        },
        {
                .str = "a_octets_received_ok",
                .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
        },
        {
                .str = "a_multicast_frames_xmitted_ok",
                .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
        },
        {
                .str = "a_broadcast_frames_xmitted_ok",
                .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
        },
        {
                .str = "a_multicast_frames_received_ok",
                .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
        },
        {
                .str = "a_broadcast_frames_received_ok",
                .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
        },
        {
                .str = "a_in_range_length_errors",
                .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
        },
        {
                .str = "a_out_of_range_length_field",
                .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
        },
        {
                .str = "a_frame_too_long_errors",
                .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
        },
        {
                .str = "a_symbol_error_during_carrier",
                .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
        },
        {

                .str = "a_mac_control_frames_transmitted",
                .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
        },
        {
                .str = "a_mac_control_frames_received",
                .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
        },
        {
                .str = "a_unsupported_opcodes_received",
                .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
        },
        {
                .str = "a_pause_mac_ctrl_frames_received",
                .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
        },
        {
                .str = "a_pause_mac_ctrl_frames_xmitted",
                .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
        },
};

#define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)

static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
        {
                .str = "rx_octets_prio",
                .getter = mlxsw_reg_ppcnt_rx_octets_get,
        },
        {
                .str = "rx_frames_prio",
                .getter = mlxsw_reg_ppcnt_rx_frames_get,
        },
        {
                .str = "tx_octets_prio",
                .getter = mlxsw_reg_ppcnt_tx_octets_get,
        },
        {
                .str = "tx_frames_prio",
                .getter = mlxsw_reg_ppcnt_tx_frames_get,
        },
        {
                .str = "rx_pause_prio",
                .getter = mlxsw_reg_ppcnt_rx_pause_get,
        },
        {
                .str = "rx_pause_duration_prio",
                .getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
        },
        {
                .str = "tx_pause_prio",
                .getter = mlxsw_reg_ppcnt_tx_pause_get,
        },
        {
                .str = "tx_pause_duration_prio",
                .getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
        },
};

#define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)

static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
        {
                .str = "tc_transmit_queue_tc",
                .getter = mlxsw_reg_ppcnt_tc_transmit_queue_get,
                .cells_bytes = true,
        },
        {
                .str = "tc_no_buffer_discard_uc_tc",
                .getter = mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get,
        },
};

#define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)

#define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
                                         (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
                                          MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
                                         IEEE_8021QAZ_MAX_TCS)

static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
{
        int i;

        for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
                snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
                         mlxsw_sp_port_hw_prio_stats[i].str, prio);
                *p += ETH_GSTRING_LEN;
        }
}

static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
{
        int i;

        for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
                snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
                         mlxsw_sp_port_hw_tc_stats[i].str, tc);
                *p += ETH_GSTRING_LEN;
        }
}

static void mlxsw_sp_port_get_strings(struct net_device *dev,
                                      u32 stringset, u8 *data)
{
        u8 *p = data;
        int i;

        switch (stringset) {
        case ETH_SS_STATS:
                for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
                        memcpy(p, mlxsw_sp_port_hw_stats[i].str,
                               ETH_GSTRING_LEN);
                        p += ETH_GSTRING_LEN;
                }

                for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
                        mlxsw_sp_port_get_prio_strings(&p, i);

                for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
                        mlxsw_sp_port_get_tc_strings(&p, i);

                break;
        }
}

static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
                                     enum ethtool_phys_id_state state)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char mlcr_pl[MLXSW_REG_MLCR_LEN];
        bool active;

        switch (state) {
        case ETHTOOL_ID_ACTIVE:
                active = true;
                break;
        case ETHTOOL_ID_INACTIVE:
                active = false;
                break;
        default:
                return -EOPNOTSUPP;
        }

        mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
}

static int
mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
                               int *p_len, enum mlxsw_reg_ppcnt_grp grp)
{
        switch (grp) {
        case  MLXSW_REG_PPCNT_IEEE_8023_CNT:
                *p_hw_stats = mlxsw_sp_port_hw_stats;
                *p_len = MLXSW_SP_PORT_HW_STATS_LEN;
                break;
        case MLXSW_REG_PPCNT_PRIO_CNT:
                *p_hw_stats = mlxsw_sp_port_hw_prio_stats;
                *p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
                break;
        case MLXSW_REG_PPCNT_TC_CNT:
                *p_hw_stats = mlxsw_sp_port_hw_tc_stats;
                *p_len = MLXSW_SP_PORT_HW_TC_STATS_LEN;
                break;
        default:
                WARN_ON(1);
                return -EOPNOTSUPP;
        }
        return 0;
}

static void __mlxsw_sp_port_get_stats(struct net_device *dev,
                                      enum mlxsw_reg_ppcnt_grp grp, int prio,
                                      u64 *data, int data_index)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        struct mlxsw_sp_port_hw_stats *hw_stats;
        char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
        int i, len;
        int err;

        err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
        if (err)
                return;
        mlxsw_sp_port_get_stats_raw(dev, grp, prio, ppcnt_pl);
        for (i = 0; i < len; i++) {
                data[data_index + i] = hw_stats[i].getter(ppcnt_pl);
                if (!hw_stats[i].cells_bytes)
                        continue;
                data[data_index + i] = mlxsw_sp_cells_bytes(mlxsw_sp,
                                                            data[data_index + i]);
        }
}

static void mlxsw_sp_port_get_stats(struct net_device *dev,
                                    struct ethtool_stats *stats, u64 *data)
{
        int i, data_index = 0;

        /* IEEE 802.3 Counters */
        __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
                                  data, data_index);
        data_index = MLXSW_SP_PORT_HW_STATS_LEN;

        /* Per-Priority Counters */
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
                                          data, data_index);
                data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
        }

        /* Per-TC Counters */
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
                                          data, data_index);
                data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;
        }
}

static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{
        switch (sset) {
        case ETH_SS_STATS:
                return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
        default:
                return -EOPNOTSUPP;
        }
}

struct mlxsw_sp_port_link_mode {
        enum ethtool_link_mode_bit_indices mask_ethtool;
        u32 mask;
        u32 speed;
};

static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
                .mask_ethtool   = ETHTOOL_LINK_MODE_100baseT_Full_BIT,
                .speed          = SPEED_100,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
                                  MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
                .mask_ethtool   = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
                .speed          = SPEED_1000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
                .mask_ethtool   = ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
                .speed          = SPEED_10000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
                                  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
                .speed          = SPEED_10000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
                                  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
                                  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
                                  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
                .mask_ethtool   = ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
                .speed          = SPEED_10000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
                .mask_ethtool   = ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
                .speed          = SPEED_20000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
                .speed          = SPEED_40000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
                .speed          = SPEED_40000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
                .speed          = SPEED_40000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
                .speed          = SPEED_40000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR,
                .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
                .speed          = SPEED_25000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR,
                .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
                .speed          = SPEED_25000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
                .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
                .speed          = SPEED_25000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
                .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
                .speed          = SPEED_25000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2,
                .mask_ethtool   = ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT,
                .speed          = SPEED_50000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
                .mask_ethtool   = ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT,
                .speed          = SPEED_50000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_SR2,
                .mask_ethtool   = ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT,
                .speed          = SPEED_50000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT,
                .speed          = SPEED_56000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT,
                .speed          = SPEED_56000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT,
                .speed          = SPEED_56000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
                .speed          = SPEED_56000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
                .speed          = SPEED_100000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
                .speed          = SPEED_100000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
                .speed          = SPEED_100000,
        },
        {
                .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
                .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT,
                .speed          = SPEED_100000,
        },
};

#define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)

static void
mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto,
                                  struct ethtool_link_ksettings *cmd)
{
        if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
                              MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
                              MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_SGMII))
                ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);

        if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
                              MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
                              MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
                ethtool_link_ksettings_add_link_mode(cmd, supported, Backplane);
}

static void mlxsw_sp_from_ptys_link(u32 ptys_eth_proto, unsigned long *mode)
{
        int i;

        for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
                if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
                        __set_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
                                  mode);
        }
}

static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
                                            struct ethtool_link_ksettings *cmd)
{
        u32 speed = SPEED_UNKNOWN;
        u8 duplex = DUPLEX_UNKNOWN;
        int i;

        if (!carrier_ok)
                goto out;

        for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
                if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
                        speed = mlxsw_sp_port_link_mode[i].speed;
                        duplex = DUPLEX_FULL;
                        break;
                }
        }
out:
        cmd->base.speed = speed;
        cmd->base.duplex = duplex;
}

static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
{
        if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
                              MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_SGMII))
                return PORT_FIBRE;

        if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
                              MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
                return PORT_DA;

        if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
                              MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
                              MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
                              MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
                return PORT_NONE;

        return PORT_OTHER;
}

static u32
mlxsw_sp_to_ptys_advert_link(const struct ethtool_link_ksettings *cmd)
{
        u32 ptys_proto = 0;
        int i;

        for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
                if (test_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
                             cmd->link_modes.advertising))
                        ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
        }
        return ptys_proto;
}

static u32 mlxsw_sp_to_ptys_speed(u32 speed)
{
        u32 ptys_proto = 0;
        int i;

        for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
                if (speed == mlxsw_sp_port_link_mode[i].speed)
                        ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
        }
        return ptys_proto;
}

static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
{
        u32 ptys_proto = 0;
        int i;

        for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
                if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
                        ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
        }
        return ptys_proto;
}

static void mlxsw_sp_port_get_link_supported(u32 eth_proto_cap,
                                             struct ethtool_link_ksettings *cmd)
{
        ethtool_link_ksettings_add_link_mode(cmd, supported, Asym_Pause);
        ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
        ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);

        mlxsw_sp_from_ptys_supported_port(eth_proto_cap, cmd);
        mlxsw_sp_from_ptys_link(eth_proto_cap, cmd->link_modes.supported);
}

static void mlxsw_sp_port_get_link_advertise(u32 eth_proto_admin, bool autoneg,
                                             struct ethtool_link_ksettings *cmd)
{
        if (!autoneg)
                return;

        ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
        mlxsw_sp_from_ptys_link(eth_proto_admin, cmd->link_modes.advertising);
}

static void
mlxsw_sp_port_get_link_lp_advertise(u32 eth_proto_lp, u8 autoneg_status,
                                    struct ethtool_link_ksettings *cmd)
{
        if (autoneg_status != MLXSW_REG_PTYS_AN_STATUS_OK || !eth_proto_lp)
                return;

        ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, Autoneg);
        mlxsw_sp_from_ptys_link(eth_proto_lp, cmd->link_modes.lp_advertising);
}

static int mlxsw_sp_port_get_link_ksettings(struct net_device *dev,
                                            struct ethtool_link_ksettings *cmd)
{
        u32 eth_proto_cap, eth_proto_admin, eth_proto_oper, eth_proto_lp;
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char ptys_pl[MLXSW_REG_PTYS_LEN];
        u8 autoneg_status;
        bool autoneg;
        int err;

        autoneg = mlxsw_sp_port->link.autoneg;
        mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
        if (err)
                return err;
        mlxsw_reg_ptys_eth_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin,
                                  &eth_proto_oper);

        mlxsw_sp_port_get_link_supported(eth_proto_cap, cmd);

        mlxsw_sp_port_get_link_advertise(eth_proto_admin, autoneg, cmd);

        eth_proto_lp = mlxsw_reg_ptys_eth_proto_lp_advertise_get(ptys_pl);
        autoneg_status = mlxsw_reg_ptys_an_status_get(ptys_pl);
        mlxsw_sp_port_get_link_lp_advertise(eth_proto_lp, autoneg_status, cmd);

        cmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
        cmd->base.port = mlxsw_sp_port_connector_port(eth_proto_oper);
        mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev), eth_proto_oper,
                                        cmd);

        return 0;
}

static int
mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
                                 const struct ethtool_link_ksettings *cmd)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char ptys_pl[MLXSW_REG_PTYS_LEN];
        u32 eth_proto_cap, eth_proto_new;
        bool autoneg;
        int err;

        mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
        if (err)
                return err;
        mlxsw_reg_ptys_eth_unpack(ptys_pl, &eth_proto_cap, NULL, NULL);

        autoneg = cmd->base.autoneg == AUTONEG_ENABLE;
        eth_proto_new = autoneg ?
                mlxsw_sp_to_ptys_advert_link(cmd) :
                mlxsw_sp_to_ptys_speed(cmd->base.speed);

        eth_proto_new = eth_proto_new & eth_proto_cap;
        if (!eth_proto_new) {
                netdev_err(dev, "No supported speed requested\n");
                return -EINVAL;
        }

        mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port,
                                eth_proto_new);
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
        if (err)
                return err;

        if (!netif_running(dev))
                return 0;

        mlxsw_sp_port->link.autoneg = autoneg;

        mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
        mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);

        return 0;
}

static int mlxsw_sp_flash_device(struct net_device *dev,
                                 struct ethtool_flash *flash)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        const struct firmware *firmware;
        int err;

        if (flash->region != ETHTOOL_FLASH_ALL_REGIONS)
                return -EOPNOTSUPP;

        dev_hold(dev);
        rtnl_unlock();

        err = request_firmware_direct(&firmware, flash->data, &dev->dev);
        if (err)
                goto out;
        err = mlxsw_sp_firmware_flash(mlxsw_sp, firmware);
        release_firmware(firmware);
out:
        rtnl_lock();
        dev_put(dev);
        return err;
}

#define MLXSW_SP_I2C_ADDR_LOW 0x50
#define MLXSW_SP_I2C_ADDR_HIGH 0x51
#define MLXSW_SP_EEPROM_PAGE_LENGTH 256

static int mlxsw_sp_query_module_eeprom(struct mlxsw_sp_port *mlxsw_sp_port,
                                        u16 offset, u16 size, void *data,
                                        unsigned int *p_read_size)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char eeprom_tmp[MLXSW_SP_REG_MCIA_EEPROM_SIZE];
        char mcia_pl[MLXSW_REG_MCIA_LEN];
        u16 i2c_addr;
        int status;
        int err;

        size = min_t(u16, size, MLXSW_SP_REG_MCIA_EEPROM_SIZE);

        if (offset < MLXSW_SP_EEPROM_PAGE_LENGTH &&
            offset + size > MLXSW_SP_EEPROM_PAGE_LENGTH)
                /* Cross pages read, read until offset 256 in low page */
                size = MLXSW_SP_EEPROM_PAGE_LENGTH - offset;

        i2c_addr = MLXSW_SP_I2C_ADDR_LOW;
        if (offset >= MLXSW_SP_EEPROM_PAGE_LENGTH) {
                i2c_addr = MLXSW_SP_I2C_ADDR_HIGH;
                offset -= MLXSW_SP_EEPROM_PAGE_LENGTH;
        }

        mlxsw_reg_mcia_pack(mcia_pl, mlxsw_sp_port->mapping.module,
                            0, 0, offset, size, i2c_addr);

        err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcia), mcia_pl);
        if (err)
                return err;

        status = mlxsw_reg_mcia_status_get(mcia_pl);
        if (status)
                return -EIO;

        mlxsw_reg_mcia_eeprom_memcpy_from(mcia_pl, eeprom_tmp);
        memcpy(data, eeprom_tmp, size);
        *p_read_size = size;

        return 0;
}

enum mlxsw_sp_eeprom_module_info_rev_id {
        MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_UNSPC      = 0x00,
        MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8436       = 0x01,
        MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8636       = 0x03,
};

enum mlxsw_sp_eeprom_module_info_id {
        MLXSW_SP_EEPROM_MODULE_INFO_ID_SFP              = 0x03,
        MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP             = 0x0C,
        MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP_PLUS        = 0x0D,
        MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28           = 0x11,
};

enum mlxsw_sp_eeprom_module_info {
        MLXSW_SP_EEPROM_MODULE_INFO_ID,
        MLXSW_SP_EEPROM_MODULE_INFO_REV_ID,
        MLXSW_SP_EEPROM_MODULE_INFO_SIZE,
};

static int mlxsw_sp_get_module_info(struct net_device *netdev,
                                    struct ethtool_modinfo *modinfo)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(netdev);
        u8 module_info[MLXSW_SP_EEPROM_MODULE_INFO_SIZE];
        u8 module_rev_id, module_id;
        unsigned int read_size;
        int err;

        err = mlxsw_sp_query_module_eeprom(mlxsw_sp_port, 0,
                                           MLXSW_SP_EEPROM_MODULE_INFO_SIZE,
                                           module_info, &read_size);
        if (err)
                return err;

        if (read_size < MLXSW_SP_EEPROM_MODULE_INFO_SIZE)
                return -EIO;

        module_rev_id = module_info[MLXSW_SP_EEPROM_MODULE_INFO_REV_ID];
        module_id = module_info[MLXSW_SP_EEPROM_MODULE_INFO_ID];

        switch (module_id) {
        case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP:
                modinfo->type       = ETH_MODULE_SFF_8436;
                modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
                break;
        case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP_PLUS:
        case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28:
                if (module_id  == MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28 ||
                    module_rev_id >= MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8636) {
                        modinfo->type       = ETH_MODULE_SFF_8636;
                        modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
                } else {
                        modinfo->type       = ETH_MODULE_SFF_8436;
                        modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
                }
                break;
        case MLXSW_SP_EEPROM_MODULE_INFO_ID_SFP:
                modinfo->type       = ETH_MODULE_SFF_8472;
                modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

static int mlxsw_sp_get_module_eeprom(struct net_device *netdev,
                                      struct ethtool_eeprom *ee,
                                      u8 *data)
{
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(netdev);
        int offset = ee->offset;
        unsigned int read_size;
        int i = 0;
        int err;

        if (!ee->len)
                return -EINVAL;

        memset(data, 0, ee->len);

        while (i < ee->len) {
                err = mlxsw_sp_query_module_eeprom(mlxsw_sp_port, offset,
                                                   ee->len - i, data + i,
                                                   &read_size);
                if (err) {
                        netdev_err(mlxsw_sp_port->dev, "Eeprom query failed\n");
                        return err;
                }

                i += read_size;
                offset += read_size;
        }

        return 0;
}

static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
        .get_drvinfo            = mlxsw_sp_port_get_drvinfo,
        .get_link               = ethtool_op_get_link,
        .get_pauseparam         = mlxsw_sp_port_get_pauseparam,
        .set_pauseparam         = mlxsw_sp_port_set_pauseparam,
        .get_strings            = mlxsw_sp_port_get_strings,
        .set_phys_id            = mlxsw_sp_port_set_phys_id,
        .get_ethtool_stats      = mlxsw_sp_port_get_stats,
        .get_sset_count         = mlxsw_sp_port_get_sset_count,
        .get_link_ksettings     = mlxsw_sp_port_get_link_ksettings,
        .set_link_ksettings     = mlxsw_sp_port_set_link_ksettings,
        .flash_device           = mlxsw_sp_flash_device,
        .get_module_info        = mlxsw_sp_get_module_info,
        .get_module_eeprom      = mlxsw_sp_get_module_eeprom,
};

static int
mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
        char ptys_pl[MLXSW_REG_PTYS_LEN];
        u32 eth_proto_admin;

        eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
        mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port,
                                eth_proto_admin);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
}

int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
                          enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
                          bool dwrr, u8 dwrr_weight)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qeec_pl[MLXSW_REG_QEEC_LEN];

        mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
                            next_index);
        mlxsw_reg_qeec_de_set(qeec_pl, true);
        mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
        mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                  enum mlxsw_reg_qeec_hr hr, u8 index,
                                  u8 next_index, u32 maxrate)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qeec_pl[MLXSW_REG_QEEC_LEN];

        mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
                            next_index);
        mlxsw_reg_qeec_mase_set(qeec_pl, true);
        mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
                              u8 switch_prio, u8 tclass)
{
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
        char qtct_pl[MLXSW_REG_QTCT_LEN];

        mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
                            tclass);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
}

static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
        int err, i;

        /* Setup the elements hierarcy, so that each TC is linked to
         * one subgroup, which are all member in the same group.
         */
        err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                    MLXSW_REG_QEEC_HIERARCY_GROUP, 0, 0, false,
                                    0);
        if (err)
                return err;
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HIERARCY_SUBGROUP, i,
                                            0, false, 0);
                if (err)
                        return err;
        }
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HIERARCY_TC, i, i,
                                            false, 0);
                if (err)
                        return err;
        }

        /* Make sure the max shaper is disabled in all hierarcies that
         * support it.
         */
        err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                            MLXSW_REG_QEEC_HIERARCY_PORT, 0, 0,
                                            MLXSW_REG_QEEC_MAS_DIS);
        if (err)
                return err;
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                                    MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
                                                    i, 0,
                                                    MLXSW_REG_QEEC_MAS_DIS);
                if (err)
                        return err;
        }
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
                                                    MLXSW_REG_QEEC_HIERARCY_TC,
                                                    i, i,
                                                    MLXSW_REG_QEEC_MAS_DIS);
                if (err)
                        return err;
        }

        /* Map all priorities to traffic class 0. */
        for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
                err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
                if (err)
                        return err;
        }

        return 0;
}

static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                                bool split, u8 module, u8 width, u8 lane)
{
        struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
        struct mlxsw_sp_port *mlxsw_sp_port;
        struct net_device *dev;
        int err;

        err = mlxsw_core_port_init(mlxsw_sp->core, local_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
                        local_port);
                return err;
        }

        dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
        if (!dev) {
                err = -ENOMEM;
                goto err_alloc_etherdev;
        }
        SET_NETDEV_DEV(dev, mlxsw_sp->bus_info->dev);
        mlxsw_sp_port = netdev_priv(dev);
        mlxsw_sp_port->dev = dev;
        mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
        mlxsw_sp_port->local_port = local_port;
        mlxsw_sp_port->pvid = 1;
        mlxsw_sp_port->split = split;
        mlxsw_sp_port->mapping.module = module;
        mlxsw_sp_port->mapping.width = width;
        mlxsw_sp_port->mapping.lane = lane;
        mlxsw_sp_port->link.autoneg = 1;
        INIT_LIST_HEAD(&mlxsw_sp_port->vlans_list);
        INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);

        mlxsw_sp_port->pcpu_stats =
                netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
        if (!mlxsw_sp_port->pcpu_stats) {
                err = -ENOMEM;
                goto err_alloc_stats;
        }

        mlxsw_sp_port->sample = kzalloc(sizeof(*mlxsw_sp_port->sample),
                                        GFP_KERNEL);
        if (!mlxsw_sp_port->sample) {
                err = -ENOMEM;
                goto err_alloc_sample;
        }

        INIT_DELAYED_WORK(&mlxsw_sp_port->periodic_hw_stats.update_dw,
                          &update_stats_cache);

        dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
        dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;

        err = mlxsw_sp_port_module_map(mlxsw_sp_port, module, width, lane);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to map module\n",
                        mlxsw_sp_port->local_port);
                goto err_port_module_map;
        }

        err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
                        mlxsw_sp_port->local_port);
                goto err_port_swid_set;
        }

        err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
                        mlxsw_sp_port->local_port);
                goto err_dev_addr_init;
        }

        netif_carrier_off(dev);

        dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
                         NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
        dev->hw_features |= NETIF_F_HW_TC;

        dev->min_mtu = 0;
        dev->max_mtu = ETH_MAX_MTU;

        /* Each packet needs to have a Tx header (metadata) on top all other
         * headers.
         */
        dev->needed_headroom = MLXSW_TXHDR_LEN;

        err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
                        mlxsw_sp_port->local_port);
                goto err_port_system_port_mapping_set;
        }

        err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
                        mlxsw_sp_port->local_port);
                goto err_port_speed_by_width_set;
        }