// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */

/* Intel(R) Ethernet Connection E800 Series Linux Driver */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <generated/utsrelease.h>
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice_dcb_lib.h"
#include "ice_dcb_nl.h"
#include "ice_devlink.h"

#define DRV_SUMMARY     "Intel(R) Ethernet Connection E800 Series Linux Driver"
static const char ice_driver_string[] = DRV_SUMMARY;
static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";

/* DDP Package file located in firmware search paths (e.g. /lib/firmware/) */
#define ICE_DDP_PKG_PATH        "intel/ice/ddp/"
#define ICE_DDP_PKG_FILE        ICE_DDP_PKG_PATH "ice.pkg"

MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION(DRV_SUMMARY);
MODULE_LICENSE("GPL v2");
MODULE_FIRMWARE(ICE_DDP_PKG_FILE);

static int debug = -1;
module_param(debug, int, 0644);
#ifndef CONFIG_DYNAMIC_DEBUG
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
#else
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
#endif /* !CONFIG_DYNAMIC_DEBUG */

static struct workqueue_struct *ice_wq;
static const struct net_device_ops ice_netdev_safe_mode_ops;
static const struct net_device_ops ice_netdev_ops;
static int ice_vsi_open(struct ice_vsi *vsi);

static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type);

static void ice_vsi_release_all(struct ice_pf *pf);

bool netif_is_ice(struct net_device *dev)
{
        return dev && (dev->netdev_ops == &ice_netdev_ops);
}

/**
 * ice_get_tx_pending - returns number of Tx descriptors not processed
 * @ring: the ring of descriptors
 */
static u16 ice_get_tx_pending(struct ice_ring *ring)
{
        u16 head, tail;

        head = ring->next_to_clean;
        tail = ring->next_to_use;

        if (head != tail)
                return (head < tail) ?
                        tail - head : (tail + ring->count - head);
        return 0;
}

/**
 * ice_check_for_hang_subtask - check for and recover hung queues
 * @pf: pointer to PF struct
 */
static void ice_check_for_hang_subtask(struct ice_pf *pf)
{
        struct ice_vsi *vsi = NULL;
        struct ice_hw *hw;
        unsigned int i;
        int packets;
        u32 v;

        ice_for_each_vsi(pf, v)
                if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) {
                        vsi = pf->vsi[v];
                        break;
                }

        if (!vsi || test_bit(ICE_VSI_DOWN, vsi->state))
                return;

        if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
                return;

        hw = &vsi->back->hw;

        for (i = 0; i < vsi->num_txq; i++) {
                struct ice_ring *tx_ring = vsi->tx_rings[i];

                if (tx_ring && tx_ring->desc) {
                        /* If packet counter has not changed the queue is
                         * likely stalled, so force an interrupt for this
                         * queue.
                         *
                         * prev_pkt would be negative if there was no
                         * pending work.
                         */
                        packets = tx_ring->stats.pkts & INT_MAX;
                        if (tx_ring->tx_stats.prev_pkt == packets) {
                                /* Trigger sw interrupt to revive the queue */
                                ice_trigger_sw_intr(hw, tx_ring->q_vector);
                                continue;
                        }

                        /* Memory barrier between read of packet count and call
                         * to ice_get_tx_pending()
                         */
                        smp_rmb();
                        tx_ring->tx_stats.prev_pkt =
                            ice_get_tx_pending(tx_ring) ? packets : -1;
                }
        }
}

/**
 * ice_init_mac_fltr - Set initial MAC filters
 * @pf: board private structure
 *
 * Set initial set of MAC filters for PF VSI; configure filters for permanent
 * address and broadcast address. If an error is encountered, netdevice will be
 * unregistered.
 */
static int ice_init_mac_fltr(struct ice_pf *pf)
{
        enum ice_status status;
        struct ice_vsi *vsi;
        u8 *perm_addr;

        vsi = ice_get_main_vsi(pf);
        if (!vsi)
                return -EINVAL;

        perm_addr = vsi->port_info->mac.perm_addr;
        status = ice_fltr_add_mac_and_broadcast(vsi, perm_addr, ICE_FWD_TO_VSI);
        if (status)
                return -EIO;

        return 0;
}

/**
 * ice_add_mac_to_sync_list - creates list of MAC addresses to be synced
 * @netdev: the net device on which the sync is happening
 * @addr: MAC address to sync
 *
 * This is a callback function which is called by the in kernel device sync
 * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only
 * populates the tmp_sync_list, which is later used by ice_add_mac to add the
 * MAC filters from the hardware.
 */
static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;

        if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr,
                                     ICE_FWD_TO_VSI))
                return -EINVAL;

        return 0;
}

/**
 * ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced
 * @netdev: the net device on which the unsync is happening
 * @addr: MAC address to unsync
 *
 * This is a callback function which is called by the in kernel device unsync
 * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only
 * populates the tmp_unsync_list, which is later used by ice_remove_mac to
 * delete the MAC filters from the hardware.
 */
static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;

        if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr,
                                     ICE_FWD_TO_VSI))
                return -EINVAL;

        return 0;
}

/**
 * ice_vsi_fltr_changed - check if filter state changed
 * @vsi: VSI to be checked
 *
 * returns true if filter state has changed, false otherwise.
 */
static bool ice_vsi_fltr_changed(struct ice_vsi *vsi)
{
        return test_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state) ||
               test_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state) ||
               test_bit(ICE_VSI_VLAN_FLTR_CHANGED, vsi->state);
}

/**
 * ice_cfg_promisc - Enable or disable promiscuous mode for a given PF
 * @vsi: the VSI being configured
 * @promisc_m: mask of promiscuous config bits
 * @set_promisc: enable or disable promisc flag request
 *
 */
static int ice_cfg_promisc(struct ice_vsi *vsi, u8 promisc_m, bool set_promisc)
{
        struct ice_hw *hw = &vsi->back->hw;
        enum ice_status status = 0;

        if (vsi->type != ICE_VSI_PF)
                return 0;

        if (vsi->num_vlan > 1) {
                status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
                                                  set_promisc);
        } else {
                if (set_promisc)
                        status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
                                                     0);
                else
                        status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
                                                       0);
        }

        if (status)
                return -EIO;

        return 0;
}

/**
 * ice_vsi_sync_fltr - Update the VSI filter list to the HW
 * @vsi: ptr to the VSI
 *
 * Push any outstanding VSI filter changes through the AdminQ.
 */
static int ice_vsi_sync_fltr(struct ice_vsi *vsi)
{
        struct device *dev = ice_pf_to_dev(vsi->back);
        struct net_device *netdev = vsi->netdev;
        bool promisc_forced_on = false;
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        enum ice_status status = 0;
        u32 changed_flags = 0;
        u8 promisc_m;
        int err = 0;

        if (!vsi->netdev)
                return -EINVAL;

        while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
                usleep_range(1000, 2000);

        changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
        vsi->current_netdev_flags = vsi->netdev->flags;

        INIT_LIST_HEAD(&vsi->tmp_sync_list);
        INIT_LIST_HEAD(&vsi->tmp_unsync_list);

        if (ice_vsi_fltr_changed(vsi)) {
                clear_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
                clear_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
                clear_bit(ICE_VSI_VLAN_FLTR_CHANGED, vsi->state);

                /* grab the netdev's addr_list_lock */
                netif_addr_lock_bh(netdev);
                __dev_uc_sync(netdev, ice_add_mac_to_sync_list,
                              ice_add_mac_to_unsync_list);
                __dev_mc_sync(netdev, ice_add_mac_to_sync_list,
                              ice_add_mac_to_unsync_list);
                /* our temp lists are populated. release lock */
                netif_addr_unlock_bh(netdev);
        }

        /* Remove MAC addresses in the unsync list */
        status = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
        ice_fltr_free_list(dev, &vsi->tmp_unsync_list);
        if (status) {
                netdev_err(netdev, "Failed to delete MAC filters\n");
                /* if we failed because of alloc failures, just bail */
                if (status == ICE_ERR_NO_MEMORY) {
                        err = -ENOMEM;
                        goto out;
                }
        }

        /* Add MAC addresses in the sync list */
        status = ice_fltr_add_mac_list(vsi, &vsi->tmp_sync_list);
        ice_fltr_free_list(dev, &vsi->tmp_sync_list);
        /* If filter is added successfully or already exists, do not go into
         * 'if' condition and report it as error. Instead continue processing
         * rest of the function.
         */
        if (status && status != ICE_ERR_ALREADY_EXISTS) {
                netdev_err(netdev, "Failed to add MAC filters\n");
                /* If there is no more space for new umac filters, VSI
                 * should go into promiscuous mode. There should be some
                 * space reserved for promiscuous filters.
                 */
                if (hw->adminq.sq_last_status == ICE_AQ_RC_ENOSPC &&
                    !test_and_set_bit(ICE_FLTR_OVERFLOW_PROMISC,
                                      vsi->state)) {
                        promisc_forced_on = true;
                        netdev_warn(netdev, "Reached MAC filter limit, forcing promisc mode on VSI %d\n",
                                    vsi->vsi_num);
                } else {
                        err = -EIO;
                        goto out;
                }
        }
        /* check for changes in promiscuous modes */
        if (changed_flags & IFF_ALLMULTI) {
                if (vsi->current_netdev_flags & IFF_ALLMULTI) {
                        if (vsi->num_vlan > 1)
                                promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
                        else
                                promisc_m = ICE_MCAST_PROMISC_BITS;

                        err = ice_cfg_promisc(vsi, promisc_m, true);
                        if (err) {
                                netdev_err(netdev, "Error setting Multicast promiscuous mode on VSI %i\n",
                                           vsi->vsi_num);
                                vsi->current_netdev_flags &= ~IFF_ALLMULTI;
                                goto out_promisc;
                        }
                } else {
                        /* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
                        if (vsi->num_vlan > 1)
                                promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
                        else
                                promisc_m = ICE_MCAST_PROMISC_BITS;

                        err = ice_cfg_promisc(vsi, promisc_m, false);
                        if (err) {
                                netdev_err(netdev, "Error clearing Multicast promiscuous mode on VSI %i\n",
                                           vsi->vsi_num);
                                vsi->current_netdev_flags |= IFF_ALLMULTI;
                                goto out_promisc;
                        }
                }
        }

        if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
            test_bit(ICE_VSI_PROMISC_CHANGED, vsi->state)) {
                clear_bit(ICE_VSI_PROMISC_CHANGED, vsi->state);
                if (vsi->current_netdev_flags & IFF_PROMISC) {
                        /* Apply Rx filter rule to get traffic from wire */
                        if (!ice_is_dflt_vsi_in_use(pf->first_sw)) {
                                err = ice_set_dflt_vsi(pf->first_sw, vsi);
                                if (err && err != -EEXIST) {
                                        netdev_err(netdev, "Error %d setting default VSI %i Rx rule\n",
                                                   err, vsi->vsi_num);
                                        vsi->current_netdev_flags &=
                                                ~IFF_PROMISC;
                                        goto out_promisc;
                                }
                                ice_cfg_vlan_pruning(vsi, false, false);
                        }
                } else {
                        /* Clear Rx filter to remove traffic from wire */
                        if (ice_is_vsi_dflt_vsi(pf->first_sw, vsi)) {
                                err = ice_clear_dflt_vsi(pf->first_sw);
                                if (err) {
                                        netdev_err(netdev, "Error %d clearing default VSI %i Rx rule\n",
                                                   err, vsi->vsi_num);
                                        vsi->current_netdev_flags |=
                                                IFF_PROMISC;
                                        goto out_promisc;
                                }
                                if (vsi->num_vlan > 1)
                                        ice_cfg_vlan_pruning(vsi, true, false);
                        }
                }
        }
        goto exit;

out_promisc:
        set_bit(ICE_VSI_PROMISC_CHANGED, vsi->state);
        goto exit;
out:
        /* if something went wrong then set the changed flag so we try again */
        set_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
        set_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
exit:
        clear_bit(ICE_CFG_BUSY, vsi->state);
        return err;
}

/**
 * ice_sync_fltr_subtask - Sync the VSI filter list with HW
 * @pf: board private structure
 */
static void ice_sync_fltr_subtask(struct ice_pf *pf)
{
        int v;

        if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags)))
                return;

        clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);

        ice_for_each_vsi(pf, v)
                if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
                    ice_vsi_sync_fltr(pf->vsi[v])) {
                        /* come back and try again later */
                        set_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
                        break;
                }
}

/**
 * ice_pf_dis_all_vsi - Pause all VSIs on a PF
 * @pf: the PF
 * @locked: is the rtnl_lock already held
 */
static void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked)
{
        int node;
        int v;

        ice_for_each_vsi(pf, v)
                if (pf->vsi[v])
                        ice_dis_vsi(pf->vsi[v], locked);

        for (node = 0; node < ICE_MAX_PF_AGG_NODES; node++)
                pf->pf_agg_node[node].num_vsis = 0;

        for (node = 0; node < ICE_MAX_VF_AGG_NODES; node++)
                pf->vf_agg_node[node].num_vsis = 0;
}

/**
 * ice_prepare_for_reset - prep for the core to reset
 * @pf: board private structure
 *
 * Inform or close all dependent features in prep for reset.
 */
static void
ice_prepare_for_reset(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        unsigned int i;

        /* already prepared for reset */
        if (test_bit(ICE_PREPARED_FOR_RESET, pf->state))
                return;

        /* Notify VFs of impending reset */
        if (ice_check_sq_alive(hw, &hw->mailboxq))
                ice_vc_notify_reset(pf);

        /* Disable VFs until reset is completed */
        ice_for_each_vf(pf, i)
                ice_set_vf_state_qs_dis(&pf->vf[i]);

        /* clear SW filtering DB */
        ice_clear_hw_tbls(hw);
        /* disable the VSIs and their queues that are not already DOWN */
        ice_pf_dis_all_vsi(pf, false);

        if (hw->port_info)
                ice_sched_clear_port(hw->port_info);

        ice_shutdown_all_ctrlq(hw);

        set_bit(ICE_PREPARED_FOR_RESET, pf->state);
}

/**
 * ice_do_reset - Initiate one of many types of resets
 * @pf: board private structure
 * @reset_type: reset type requested
 * before this function was called.
 */
static void ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;

        dev_dbg(dev, "reset_type 0x%x requested\n", reset_type);

        ice_prepare_for_reset(pf);

        /* trigger the reset */
        if (ice_reset(hw, reset_type)) {
                dev_err(dev, "reset %d failed\n", reset_type);
                set_bit(ICE_RESET_FAILED, pf->state);
                clear_bit(ICE_RESET_OICR_RECV, pf->state);
                clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
                clear_bit(ICE_PFR_REQ, pf->state);
                clear_bit(ICE_CORER_REQ, pf->state);
                clear_bit(ICE_GLOBR_REQ, pf->state);
                return;
        }

        /* PFR is a bit of a special case because it doesn't result in an OICR
         * interrupt. So for PFR, rebuild after the reset and clear the reset-
         * associated state bits.
         */
        if (reset_type == ICE_RESET_PFR) {
                pf->pfr_count++;
                ice_rebuild(pf, reset_type);
                clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
                clear_bit(ICE_PFR_REQ, pf->state);
                ice_reset_all_vfs(pf, true);
        }
}

/**
 * ice_reset_subtask - Set up for resetting the device and driver
 * @pf: board private structure
 */
static void ice_reset_subtask(struct ice_pf *pf)
{
        enum ice_reset_req reset_type = ICE_RESET_INVAL;

        /* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an
         * OICR interrupt. The OICR handler (ice_misc_intr) determines what type
         * of reset is pending and sets bits in pf->state indicating the reset
         * type and ICE_RESET_OICR_RECV. So, if the latter bit is set
         * prepare for pending reset if not already (for PF software-initiated
         * global resets the software should already be prepared for it as
         * indicated by ICE_PREPARED_FOR_RESET; for global resets initiated
         * by firmware or software on other PFs, that bit is not set so prepare
         * for the reset now), poll for reset done, rebuild and return.
         */
        if (test_bit(ICE_RESET_OICR_RECV, pf->state)) {
                /* Perform the largest reset requested */
                if (test_and_clear_bit(ICE_CORER_RECV, pf->state))
                        reset_type = ICE_RESET_CORER;
                if (test_and_clear_bit(ICE_GLOBR_RECV, pf->state))
                        reset_type = ICE_RESET_GLOBR;
                if (test_and_clear_bit(ICE_EMPR_RECV, pf->state))
                        reset_type = ICE_RESET_EMPR;
                /* return if no valid reset type requested */
                if (reset_type == ICE_RESET_INVAL)
                        return;
                ice_prepare_for_reset(pf);

                /* make sure we are ready to rebuild */
                if (ice_check_reset(&pf->hw)) {
                        set_bit(ICE_RESET_FAILED, pf->state);
                } else {
                        /* done with reset. start rebuild */
                        pf->hw.reset_ongoing = false;
                        ice_rebuild(pf, reset_type);
                        /* clear bit to resume normal operations, but
                         * ICE_NEEDS_RESTART bit is set in case rebuild failed
                         */
                        clear_bit(ICE_RESET_OICR_RECV, pf->state);
                        clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
                        clear_bit(ICE_PFR_REQ, pf->state);
                        clear_bit(ICE_CORER_REQ, pf->state);
                        clear_bit(ICE_GLOBR_REQ, pf->state);
                        ice_reset_all_vfs(pf, true);
                }

                return;
        }

        /* No pending resets to finish processing. Check for new resets */
        if (test_bit(ICE_PFR_REQ, pf->state))
                reset_type = ICE_RESET_PFR;
        if (test_bit(ICE_CORER_REQ, pf->state))
                reset_type = ICE_RESET_CORER;
        if (test_bit(ICE_GLOBR_REQ, pf->state))
                reset_type = ICE_RESET_GLOBR;
        /* If no valid reset type requested just return */
        if (reset_type == ICE_RESET_INVAL)
                return;

        /* reset if not already down or busy */
        if (!test_bit(ICE_DOWN, pf->state) &&
            !test_bit(ICE_CFG_BUSY, pf->state)) {
                ice_do_reset(pf, reset_type);
        }
}

/**
 * ice_print_topo_conflict - print topology conflict message
 * @vsi: the VSI whose topology status is being checked
 */
static void ice_print_topo_conflict(struct ice_vsi *vsi)
{
        switch (vsi->port_info->phy.link_info.topo_media_conflict) {
        case ICE_AQ_LINK_TOPO_CONFLICT:
        case ICE_AQ_LINK_MEDIA_CONFLICT:
        case ICE_AQ_LINK_TOPO_UNREACH_PRT:
        case ICE_AQ_LINK_TOPO_UNDRUTIL_PRT:
        case ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA:
                netdev_info(vsi->netdev, "Potential misconfiguration of the Ethernet port detected. If it was not intended, please use the Intel (R) Ethernet Port Configuration Tool to address the issue.\n");
                break;
        case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA:
                netdev_info(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
                break;
        default:
                break;
        }
}

/**
 * ice_print_link_msg - print link up or down message
 * @vsi: the VSI whose link status is being queried
 * @isup: boolean for if the link is now up or down
 */
void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
{
        struct ice_aqc_get_phy_caps_data *caps;
        const char *an_advertised;
        enum ice_status status;
        const char *fec_req;
        const char *speed;
        const char *fec;
        const char *fc;
        const char *an;

        if (!vsi)
                return;

        if (vsi->current_isup == isup)
                return;

        vsi->current_isup = isup;

        if (!isup) {
                netdev_info(vsi->netdev, "NIC Link is Down\n");
                return;
        }

        switch (vsi->port_info->phy.link_info.link_speed) {
        case ICE_AQ_LINK_SPEED_100GB:
                speed = "100 G";
                break;
        case ICE_AQ_LINK_SPEED_50GB:
                speed = "50 G";
                break;
        case ICE_AQ_LINK_SPEED_40GB:
                speed = "40 G";
                break;
        case ICE_AQ_LINK_SPEED_25GB:
                speed = "25 G";
                break;
        case ICE_AQ_LINK_SPEED_20GB:
                speed = "20 G";
                break;
        case ICE_AQ_LINK_SPEED_10GB:
                speed = "10 G";
                break;
        case ICE_AQ_LINK_SPEED_5GB:
                speed = "5 G";
                break;
        case ICE_AQ_LINK_SPEED_2500MB:
                speed = "2.5 G";
                break;
        case ICE_AQ_LINK_SPEED_1000MB:
                speed = "1 G";
                break;
        case ICE_AQ_LINK_SPEED_100MB:
                speed = "100 M";
                break;
        default:
                speed = "Unknown ";
                break;
        }

        switch (vsi->port_info->fc.current_mode) {
        case ICE_FC_FULL:
                fc = "Rx/Tx";
                break;
        case ICE_FC_TX_PAUSE:
                fc = "Tx";
                break;
        case ICE_FC_RX_PAUSE:
                fc = "Rx";
                break;
        case ICE_FC_NONE:
                fc = "None";
                break;
        default:
                fc = "Unknown";
                break;
        }

        /* Get FEC mode based on negotiated link info */
        switch (vsi->port_info->phy.link_info.fec_info) {
        case ICE_AQ_LINK_25G_RS_528_FEC_EN:
        case ICE_AQ_LINK_25G_RS_544_FEC_EN:
                fec = "RS-FEC";
                break;
        case ICE_AQ_LINK_25G_KR_FEC_EN:
                fec = "FC-FEC/BASE-R";
                break;
        default:
                fec = "NONE";
                break;
        }

        /* check if autoneg completed, might be false due to not supported */
        if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED)
                an = "True";
        else
                an = "False";

        /* Get FEC mode requested based on PHY caps last SW configuration */
        caps = kzalloc(sizeof(*caps), GFP_KERNEL);
        if (!caps) {
                fec_req = "Unknown";
                an_advertised = "Unknown";
                goto done;
        }

        status = ice_aq_get_phy_caps(vsi->port_info, false,
                                     ICE_AQC_REPORT_ACTIVE_CFG, caps, NULL);
        if (status)
                netdev_info(vsi->netdev, "Get phy capability failed.\n");

        an_advertised = ice_is_phy_caps_an_enabled(caps) ? "On" : "Off";

        if (caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_528_REQ ||
            caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_544_REQ)
                fec_req = "RS-FEC";
        else if (caps->link_fec_options & ICE_AQC_PHY_FEC_10G_KR_40G_KR4_REQ ||
                 caps->link_fec_options & ICE_AQC_PHY_FEC_25G_KR_REQ)
                fec_req = "FC-FEC/BASE-R";
        else
                fec_req = "NONE";

        kfree(caps);

done:
        netdev_info(vsi->netdev, "NIC Link is up %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg Advertised: %s, Autoneg Negotiated: %s, Flow Control: %s\n",
                    speed, fec_req, fec, an_advertised, an, fc);
        ice_print_topo_conflict(vsi);
}

/**
 * ice_vsi_link_event - update the VSI's netdev
 * @vsi: the VSI on which the link event occurred
 * @link_up: whether or not the VSI needs to be set up or down
 */
static void ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
{
        if (!vsi)
                return;

        if (test_bit(ICE_VSI_DOWN, vsi->state) || !vsi->netdev)
                return;

        if (vsi->type == ICE_VSI_PF) {
                if (link_up == netif_carrier_ok(vsi->netdev))
                        return;

                if (link_up) {
                        netif_carrier_on(vsi->netdev);
                        netif_tx_wake_all_queues(vsi->netdev);
                } else {
                        netif_carrier_off(vsi->netdev);
                        netif_tx_stop_all_queues(vsi->netdev);
                }
        }
}

/**
 * ice_set_dflt_mib - send a default config MIB to the FW
 * @pf: private PF struct
 *
 * This function sends a default configuration MIB to the FW.
 *
 * If this function errors out at any point, the driver is still able to
 * function.  The main impact is that LFC may not operate as expected.
 * Therefore an error state in this function should be treated with a DBG
 * message and continue on with driver rebuild/reenable.
 */
static void ice_set_dflt_mib(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        u8 mib_type, *buf, *lldpmib = NULL;
        u16 len, typelen, offset = 0;
        struct ice_lldp_org_tlv *tlv;
        struct ice_hw *hw = &pf->hw;
        u32 ouisubtype;

        mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
        lldpmib = kzalloc(ICE_LLDPDU_SIZE, GFP_KERNEL);
        if (!lldpmib) {
                dev_dbg(dev, "%s Failed to allocate MIB memory\n",
                        __func__);
                return;
        }

        /* Add ETS CFG TLV */
        tlv = (struct ice_lldp_org_tlv *)lldpmib;
        typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
                   ICE_IEEE_ETS_TLV_LEN);
        tlv->typelen = htons(typelen);
        ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
                      ICE_IEEE_SUBTYPE_ETS_CFG);
        tlv->ouisubtype = htonl(ouisubtype);

        buf = tlv->tlvinfo;
        buf[0] = 0;

        /* ETS CFG all UPs map to TC 0. Next 4 (1 - 4) Octets = 0.
         * Octets 5 - 12 are BW values, set octet 5 to 100% BW.
         * Octets 13 - 20 are TSA values - leave as zeros
         */
        buf[5] = 0x64;
        len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
        offset += len + 2;
        tlv = (struct ice_lldp_org_tlv *)
                ((char *)tlv + sizeof(tlv->typelen) + len);

        /* Add ETS REC TLV */
        buf = tlv->tlvinfo;
        tlv->typelen = htons(typelen);

        ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
                      ICE_IEEE_SUBTYPE_ETS_REC);
        tlv->ouisubtype = htonl(ouisubtype);

        /* First octet of buf is reserved
         * Octets 1 - 4 map UP to TC - all UPs map to zero
         * Octets 5 - 12 are BW values - set TC 0 to 100%.
         * Octets 13 - 20 are TSA value - leave as zeros
         */
        buf[5] = 0x64;
        offset += len + 2;
        tlv = (struct ice_lldp_org_tlv *)
                ((char *)tlv + sizeof(tlv->typelen) + len);

        /* Add PFC CFG TLV */
        typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
                   ICE_IEEE_PFC_TLV_LEN);
        tlv->typelen = htons(typelen);

        ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
                      ICE_IEEE_SUBTYPE_PFC_CFG);
        tlv->ouisubtype = htonl(ouisubtype);

        /* Octet 1 left as all zeros - PFC disabled */
        buf[0] = 0x08;
        len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
        offset += len + 2;

        if (ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, offset, NULL))
                dev_dbg(dev, "%s Failed to set default LLDP MIB\n", __func__);

        kfree(lldpmib);
}

/**
 * ice_link_event - process the link event
 * @pf: PF that the link event is associated with
 * @pi: port_info for the port that the link event is associated with
 * @link_up: true if the physical link is up and false if it is down
 * @link_speed: current link speed received from the link event
 *
 * Returns 0 on success and negative on failure
 */
static int
ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up,
               u16 link_speed)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_phy_info *phy_info;
        enum ice_status status;
        struct ice_vsi *vsi;
        u16 old_link_speed;
        bool old_link;

        phy_info = &pi->phy;
        phy_info->link_info_old = phy_info->link_info;

        old_link = !!(phy_info->link_info_old.link_info & ICE_AQ_LINK_UP);
        old_link_speed = phy_info->link_info_old.link_speed;

        /* update the link info structures and re-enable link events,
         * don't bail on failure due to other book keeping needed
         */
        status = ice_update_link_info(pi);
        if (status)
                dev_dbg(dev, "Failed to update link status on port %d, err %s aq_err %s\n",
                        pi->lport, ice_stat_str(status),
                        ice_aq_str(pi->hw->adminq.sq_last_status));

        /* Check if the link state is up after updating link info, and treat
         * this event as an UP event since the link is actually UP now.
         */
        if (phy_info->link_info.link_info & ICE_AQ_LINK_UP)
                link_up = true;

        vsi = ice_get_main_vsi(pf);
        if (!vsi || !vsi->port_info)
                return -EINVAL;

        /* turn off PHY if media was removed */
        if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) &&
            !(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) {
                set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
                ice_set_link(vsi, false);
        }

        /* if the old link up/down and speed is the same as the new */
        if (link_up == old_link && link_speed == old_link_speed)
                return 0;

        if (ice_is_dcb_active(pf)) {
                if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
                        ice_dcb_rebuild(pf);
        } else {
                if (link_up)
                        ice_set_dflt_mib(pf);
        }
        ice_vsi_link_event(vsi, link_up);
        ice_print_link_msg(vsi, link_up);

        ice_vc_notify_link_state(pf);

        return 0;
}

/**
 * ice_watchdog_subtask - periodic tasks not using event driven scheduling
 * @pf: board private structure
 */
static void ice_watchdog_subtask(struct ice_pf *pf)
{
        int i;

        /* if interface is down do nothing */
        if (test_bit(ICE_DOWN, pf->state) ||
            test_bit(ICE_CFG_BUSY, pf->state))
                return;

        /* make sure we don't do these things too often */
        if (time_before(jiffies,
                        pf->serv_tmr_prev + pf->serv_tmr_period))
                return;

        pf->serv_tmr_prev = jiffies;

        /* Update the stats for active netdevs so the network stack
         * can look at updated numbers whenever it cares to
         */
        ice_update_pf_stats(pf);
        ice_for_each_vsi(pf, i)
                if (pf->vsi[i] && pf->vsi[i]->netdev)
                        ice_update_vsi_stats(pf->vsi[i]);
}

/**
 * ice_init_link_events - enable/initialize link events
 * @pi: pointer to the port_info instance
 *
 * Returns -EIO on failure, 0 on success
 */
static int ice_init_link_events(struct ice_port_info *pi)
{
        u16 mask;

        mask = ~((u16)(ICE_AQ_LINK_EVENT_UPDOWN | ICE_AQ_LINK_EVENT_MEDIA_NA |
                       ICE_AQ_LINK_EVENT_MODULE_QUAL_FAIL));

        if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) {
                dev_dbg(ice_hw_to_dev(pi->hw), "Failed to set link event mask for port %d\n",
                        pi->lport);
                return -EIO;
        }

        if (ice_aq_get_link_info(pi, true, NULL, NULL)) {
                dev_dbg(ice_hw_to_dev(pi->hw), "Failed to enable link events for port %d\n",
                        pi->lport);
                return -EIO;
        }

        return 0;
}

/**
 * ice_handle_link_event - handle link event via ARQ
 * @pf: PF that the link event is associated with
 * @event: event structure containing link status info
 */
static int
ice_handle_link_event(struct ice_pf *pf, struct ice_rq_event_info *event)
{
        struct ice_aqc_get_link_status_data *link_data;
        struct ice_port_info *port_info;
        int status;

        link_data = (struct ice_aqc_get_link_status_data *)event->msg_buf;

        port_info = pf->hw.port_info;
        if (!port_info)
                return -EINVAL;

        status = ice_link_event(pf, port_info,
                                !!(link_data->link_info & ICE_AQ_LINK_UP),
                                le16_to_cpu(link_data->link_speed));
        if (status)
                dev_dbg(ice_pf_to_dev(pf), "Could not process link event, error %d\n",
                        status);

        return status;
}

enum ice_aq_task_state {
        ICE_AQ_TASK_WAITING = 0,
        ICE_AQ_TASK_COMPLETE,
        ICE_AQ_TASK_CANCELED,
};

struct ice_aq_task {
        struct hlist_node entry;

        u16 opcode;
        struct ice_rq_event_info *event;
        enum ice_aq_task_state state;
};

/**
 * ice_aq_wait_for_event - Wait for an AdminQ event from firmware
 * @pf: pointer to the PF private structure
 * @opcode: the opcode to wait for
 * @timeout: how long to wait, in jiffies
 * @event: storage for the event info
 *
 * Waits for a specific AdminQ completion event on the ARQ for a given PF. The
 * current thread will be put to sleep until the specified event occurs or
 * until the given timeout is reached.
 *
 * To obtain only the descriptor contents, pass an event without an allocated
 * msg_buf. If the complete data buffer is desired, allocate the
 * event->msg_buf with enough space ahead of time.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
int ice_aq_wait_for_event(struct ice_pf *pf, u16 opcode, unsigned long timeout,
                          struct ice_rq_event_info *event)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_aq_task *task;
        unsigned long start;
        long ret;
        int err;

        task = kzalloc(sizeof(*task), GFP_KERNEL);
        if (!task)
                return -ENOMEM;

        INIT_HLIST_NODE(&task->entry);
        task->opcode = opcode;
        task->event = event;
        task->state = ICE_AQ_TASK_WAITING;

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_add_head(&task->entry, &pf->aq_wait_list);
        spin_unlock_bh(&pf->aq_wait_lock);

        start = jiffies;

        ret = wait_event_interruptible_timeout(pf->aq_wait_queue, task->state,
                                               timeout);
        switch (task->state) {
        case ICE_AQ_TASK_WAITING:
                err = ret < 0 ? ret : -ETIMEDOUT;
                break;
        case ICE_AQ_TASK_CANCELED:
                err = ret < 0 ? ret : -ECANCELED;
                break;
        case ICE_AQ_TASK_COMPLETE:
                err = ret < 0 ? ret : 0;
                break;
        default:
                WARN(1, "Unexpected AdminQ wait task state %u", task->state);
                err = -EINVAL;
                break;
        }

        dev_dbg(dev, "Waited %u msecs (max %u msecs) for firmware response to op 0x%04x\n",
                jiffies_to_msecs(jiffies - start),
                jiffies_to_msecs(timeout),
                opcode);

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_del(&task->entry);
        spin_unlock_bh(&pf->aq_wait_lock);
        kfree(task);

        return err;
}

/**
 * ice_aq_check_events - Check if any thread is waiting for an AdminQ event
 * @pf: pointer to the PF private structure
 * @opcode: the opcode of the event
 * @event: the event to check
 *
 * Loops over the current list of pending threads waiting for an AdminQ event.
 * For each matching task, copy the contents of the event into the task
 * structure and wake up the thread.
 *
 * If multiple threads wait for the same opcode, they will all be woken up.
 *
 * Note that event->msg_buf will only be duplicated if the event has a buffer
 * with enough space already allocated. Otherwise, only the descriptor and
 * message length will be copied.
 *
 * Returns: true if an event was found, false otherwise
 */
static void ice_aq_check_events(struct ice_pf *pf, u16 opcode,
                                struct ice_rq_event_info *event)
{
        struct ice_aq_task *task;
        bool found = false;

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_for_each_entry(task, &pf->aq_wait_list, entry) {
                if (task->state || task->opcode != opcode)
                        continue;

                memcpy(&task->event->desc, &event->desc, sizeof(event->desc));
                task->event->msg_len = event->msg_len;

                /* Only copy the data buffer if a destination was set */
                if (task->event->msg_buf &&
                    task->event->buf_len > event->buf_len) {
                        memcpy(task->event->msg_buf, event->msg_buf,
                               event->buf_len);
                        task->event->buf_len = event->buf_len;
                }

                task->state = ICE_AQ_TASK_COMPLETE;
                found = true;
        }
        spin_unlock_bh(&pf->aq_wait_lock);

        if (found)
                wake_up(&pf->aq_wait_queue);
}

/**
 * ice_aq_cancel_waiting_tasks - Immediately cancel all waiting tasks
 * @pf: the PF private structure
 *
 * Set all waiting tasks to ICE_AQ_TASK_CANCELED, and wake up their threads.
 * This will then cause ice_aq_wait_for_event to exit with -ECANCELED.
 */
static void ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
{
        struct ice_aq_task *task;

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_for_each_entry(task, &pf->aq_wait_list, entry)
                task->state = ICE_AQ_TASK_CANCELED;
        spin_unlock_bh(&pf->aq_wait_lock);

        wake_up(&pf->aq_wait_queue);
}

/**
 * __ice_clean_ctrlq - helper function to clean controlq rings
 * @pf: ptr to struct ice_pf
 * @q_type: specific Control queue type
 */
static int __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_rq_event_info event;
        struct ice_hw *hw = &pf->hw;
        struct ice_ctl_q_info *cq;
        u16 pending, i = 0;
        const char *qtype;
        u32 oldval, val;

        /* Do not clean control queue if/when PF reset fails */
        if (test_bit(ICE_RESET_FAILED, pf->state))
                return 0;

        switch (q_type) {
        case ICE_CTL_Q_ADMIN:
                cq = &hw->adminq;
                qtype = "Admin";
                break;
        case ICE_CTL_Q_MAILBOX:
                cq = &hw->mailboxq;
                qtype = "Mailbox";
                /* we are going to try to detect a malicious VF, so set the
                 * state to begin detection
                 */
                hw->mbx_snapshot.mbx_buf.state = ICE_MAL_VF_DETECT_STATE_NEW_SNAPSHOT;
                break;
        default:
                dev_warn(dev, "Unknown control queue type 0x%x\n", q_type);
                return 0;
        }

        /* check for error indications - PF_xx_AxQLEN register layout for
         * FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN.
         */
        val = rd32(hw, cq->rq.len);
        if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
                   PF_FW_ARQLEN_ARQCRIT_M)) {
                oldval = val;
                if (val & PF_FW_ARQLEN_ARQVFE_M)
                        dev_dbg(dev, "%s Receive Queue VF Error detected\n",
                                qtype);
                if (val & PF_FW_ARQLEN_ARQOVFL_M) {
                        dev_dbg(dev, "%s Receive Queue Overflow Error detected\n",
                                qtype);
                }
                if (val & PF_FW_ARQLEN_ARQCRIT_M)
                        dev_dbg(dev, "%s Receive Queue Critical Error detected\n",
                                qtype);
                val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
                         PF_FW_ARQLEN_ARQCRIT_M);
                if (oldval != val)
                        wr32(hw, cq->rq.len, val);
        }

        val = rd32(hw, cq->sq.len);
        if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
                   PF_FW_ATQLEN_ATQCRIT_M)) {
                oldval = val;
                if (val & PF_FW_ATQLEN_ATQVFE_M)
                        dev_dbg(dev, "%s Send Queue VF Error detected\n",
                                qtype);
                if (val & PF_FW_ATQLEN_ATQOVFL_M) {
                        dev_dbg(dev, "%s Send Queue Overflow Error detected\n",
                                qtype);
                }
                if (val & PF_FW_ATQLEN_ATQCRIT_M)
                        dev_dbg(dev, "%s Send Queue Critical Error detected\n",
                                qtype);
                val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
                         PF_FW_ATQLEN_ATQCRIT_M);
                if (oldval != val)
                        wr32(hw, cq->sq.len, val);
        }

        event.buf_len = cq->rq_buf_size;
        event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
        if (!event.msg_buf)
                return 0;

        do {
                enum ice_status ret;
                u16 opcode;

                ret = ice_clean_rq_elem(hw, cq, &event, &pending);
                if (ret == ICE_ERR_AQ_NO_WORK)
                        break;
                if (ret) {
                        dev_err(dev, "%s Receive Queue event error %s\n", qtype,
                                ice_stat_str(ret));
                        break;
                }

                opcode = le16_to_cpu(event.desc.opcode);

                /* Notify any thread that might be waiting for this event */
                ice_aq_check_events(pf, opcode, &event);

                switch (opcode) {
                case ice_aqc_opc_get_link_status:
                        if (ice_handle_link_event(pf, &event))
                                dev_err(dev, "Could not handle link event\n");
                        break;
                case ice_aqc_opc_event_lan_overflow:
                        ice_vf_lan_overflow_event(pf, &event);
                        break;
                case ice_mbx_opc_send_msg_to_pf:
                        if (!ice_is_malicious_vf(pf, &event, i, pending))
                                ice_vc_process_vf_msg(pf, &event);
                        break;
                case ice_aqc_opc_fw_logging:
                        ice_output_fw_log(hw, &event.desc, event.msg_buf);
                        break;
                case ice_aqc_opc_lldp_set_mib_change:
                        ice_dcb_process_lldp_set_mib_change(pf, &event);
                        break;
                default:
                        dev_dbg(dev, "%s Receive Queue unknown event 0x%04x ignored\n",
                                qtype, opcode);
                        break;
                }
        } while (pending && (i++ < ICE_DFLT_IRQ_WORK));

        kfree(event.msg_buf);

        return pending && (i == ICE_DFLT_IRQ_WORK);
}

/**
 * ice_ctrlq_pending - check if there is a difference between ntc and ntu
 * @hw: pointer to hardware info
 * @cq: control queue information
 *
 * returns true if there are pending messages in a queue, false if there aren't
 */
static bool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
{
        u16 ntu;

        ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
        return cq->rq.next_to_clean != ntu;
}

/**
 * ice_clean_adminq_subtask - clean the AdminQ rings
 * @pf: board private structure
 */
static void ice_clean_adminq_subtask(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;

        if (!test_bit(ICE_ADMINQ_EVENT_PENDING, pf->state))
                return;

        if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN))
                return;

        clear_bit(ICE_ADMINQ_EVENT_PENDING, pf->state);

        /* There might be a situation where new messages arrive to a control
         * queue between processing the last message and clearing the
         * EVENT_PENDING bit. So before exiting, check queue head again (using
         * ice_ctrlq_pending) and process new messages if any.
         */
        if (ice_ctrlq_pending(hw, &hw->adminq))
                __ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN);

        ice_flush(hw);
}

/**
 * ice_clean_mailboxq_subtask - clean the MailboxQ rings
 * @pf: board private structure
 */
static void ice_clean_mailboxq_subtask(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;

        if (!test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state))
                return;

        if (__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX))
                return;

        clear_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state);

        if (ice_ctrlq_pending(hw, &hw->mailboxq))
                __ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX);

        ice_flush(hw);
}

/**
 * ice_service_task_schedule - schedule the service task to wake up
 * @pf: board private structure
 *
 * If not already scheduled, this puts the task into the work queue.
 */
void ice_service_task_schedule(struct ice_pf *pf)
{
        if (!test_bit(ICE_SERVICE_DIS, pf->state) &&
            !test_and_set_bit(ICE_SERVICE_SCHED, pf->state) &&
            !test_bit(ICE_NEEDS_RESTART, pf->state))
                queue_work(ice_wq, &pf->serv_task);
}

/**
 * ice_service_task_complete - finish up the service task
 * @pf: board private structure
 */
static void ice_service_task_complete(struct ice_pf *pf)
{
        WARN_ON(!test_bit(ICE_SERVICE_SCHED, pf->state));

        /* force memory (pf->state) to sync before next service task */
        smp_mb__before_atomic();
        clear_bit(ICE_SERVICE_SCHED, pf->state);
}

/**
 * ice_service_task_stop - stop service task and cancel works
 * @pf: board private structure
 *
 * Return 0 if the ICE_SERVICE_DIS bit was not already set,
 * 1 otherwise.
 */
static int ice_service_task_stop(struct ice_pf *pf)
{
        int ret;

        ret = test_and_set_bit(ICE_SERVICE_DIS, pf->state);

        if (pf->serv_tmr.function)
                del_timer_sync(&pf->serv_tmr);
        if (pf->serv_task.func)
                cancel_work_sync(&pf->serv_task);

        clear_bit(ICE_SERVICE_SCHED, pf->state);
        return ret;
}

/**
 * ice_service_task_restart - restart service task and schedule works
 * @pf: board private structure
 *
 * This function is needed for suspend and resume works (e.g WoL scenario)
 */
static void ice_service_task_restart(struct ice_pf *pf)
{
        clear_bit(ICE_SERVICE_DIS, pf->state);
        ice_service_task_schedule(pf);
}

/**
 * ice_service_timer - timer callback to schedule service task
 * @t: pointer to timer_list
 */
static void ice_service_timer(struct timer_list *t)
{
        struct ice_pf *pf = from_timer(pf, t, serv_tmr);

        mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies));
        ice_service_task_schedule(pf);
}

/**
 * ice_handle_mdd_event - handle malicious driver detect event
 * @pf: pointer to the PF structure
 *
 * Called from service task. OICR interrupt handler indicates MDD event.
 * VF MDD logging is guarded by net_ratelimit. Additional PF and VF log
 * messages are wrapped by netif_msg_[rx|tx]_err. Since VF Rx MDD events
 * disable the queue, the PF can be configured to reset the VF using ethtool
 * private flag mdd-auto-reset-vf.
 */
static void ice_handle_mdd_event(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        unsigned int i;
        u32 reg;

        if (!test_and_clear_bit(ICE_MDD_EVENT_PENDING, pf->state)) {
                /* Since the VF MDD event logging is rate limited, check if
                 * there are pending MDD events.
                 */
                ice_print_vfs_mdd_events(pf);
                return;
        }

        /* find what triggered an MDD event */
        reg = rd32(hw, GL_MDET_TX_PQM);
        if (reg & GL_MDET_TX_PQM_VALID_M) {
                u8 pf_num = (reg & GL_MDET_TX_PQM_PF_NUM_M) >>
                                GL_MDET_TX_PQM_PF_NUM_S;
                u16 vf_num = (reg & GL_MDET_TX_PQM_VF_NUM_M) >>
                                GL_MDET_TX_PQM_VF_NUM_S;
                u8 event = (reg & GL_MDET_TX_PQM_MAL_TYPE_M) >>
                                GL_MDET_TX_PQM_MAL_TYPE_S;
                u16 queue = ((reg & GL_MDET_TX_PQM_QNUM_M) >>
                                GL_MDET_TX_PQM_QNUM_S);

                if (netif_msg_tx_err(pf))
                        dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
                                 event, queue, pf_num, vf_num);
                wr32(hw, GL_MDET_TX_PQM, 0xffffffff);
        }

        reg = rd32(hw, GL_MDET_TX_TCLAN);
        if (reg & GL_MDET_TX_TCLAN_VALID_M) {
                u8 pf_num = (reg & GL_MDET_TX_TCLAN_PF_NUM_M) >>
                                GL_MDET_TX_TCLAN_PF_NUM_S;
                u16 vf_num = (reg & GL_MDET_TX_TCLAN_VF_NUM_M) >>
                                GL_MDET_TX_TCLAN_VF_NUM_S;
                u8 event = (reg & GL_MDET_TX_TCLAN_MAL_TYPE_M) >>
                                GL_MDET_TX_TCLAN_MAL_TYPE_S;
                u16 queue = ((reg & GL_MDET_TX_TCLAN_QNUM_M) >>
                                GL_MDET_TX_TCLAN_QNUM_S);

                if (netif_msg_tx_err(pf))
                        dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
                                 event, queue, pf_num, vf_num);
                wr32(hw, GL_MDET_TX_TCLAN, 0xffffffff);
        }

        reg = rd32(hw, GL_MDET_RX);
        if (reg & GL_MDET_RX_VALID_M) {
                u8 pf_num = (reg & GL_MDET_RX_PF_NUM_M) >>
                                GL_MDET_RX_PF_NUM_S;
                u16 vf_num = (reg & GL_MDET_RX_VF_NUM_M) >>
                                GL_MDET_RX_VF_NUM_S;
                u8 event = (reg & GL_MDET_RX_MAL_TYPE_M) >>
                                GL_MDET_RX_MAL_TYPE_S;
                u16 queue = ((reg & GL_MDET_RX_QNUM_M) >>
                                GL_MDET_RX_QNUM_S);

                if (netif_msg_rx_err(pf))
                        dev_info(dev, "Malicious Driver Detection event %d on RX queue %d PF# %d VF# %d\n",
                                 event, queue, pf_num, vf_num);
                wr32(hw, GL_MDET_RX, 0xffffffff);
        }

        /* check to see if this PF caused an MDD event */
        reg = rd32(hw, PF_MDET_TX_PQM);
        if (reg & PF_MDET_TX_PQM_VALID_M) {
                wr32(hw, PF_MDET_TX_PQM, 0xFFFF);
                if (netif_msg_tx_err(pf))
                        dev_info(dev, "Malicious Driver Detection event TX_PQM detected on PF\n");
        }

        reg = rd32(hw, PF_MDET_TX_TCLAN);
        if (reg & PF_MDET_TX_TCLAN_VALID_M) {
                wr32(hw, PF_MDET_TX_TCLAN, 0xFFFF);
                if (netif_msg_tx_err(pf))
                        dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on PF\n");
        }

        reg = rd32(hw, PF_MDET_RX);
        if (reg & PF_MDET_RX_VALID_M) {
                wr32(hw, PF_MDET_RX, 0xFFFF);
                if (netif_msg_rx_err(pf))
                        dev_info(dev, "Malicious Driver Detection event RX detected on PF\n");
        }

        /* Check to see if one of the VFs caused an MDD event, and then
         * increment counters and set print pending
         */
        ice_for_each_vf(pf, i) {
                struct ice_vf *vf = &pf->vf[i];

                reg = rd32(hw, VP_MDET_TX_PQM(i));
                if (reg & VP_MDET_TX_PQM_VALID_M) {
                        wr32(hw, VP_MDET_TX_PQM(i), 0xFFFF);
                        vf->mdd_tx_events.count++;
                        set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state);
                        if (netif_msg_tx_err(pf))
                                dev_info(dev, "Malicious Driver Detection event TX_PQM detected on VF %d\n",
                                         i);
                }

                reg = rd32(hw, VP_MDET_TX_TCLAN(i));
                if (reg & VP_MDET_TX_TCLAN_VALID_M) {
                        wr32(hw, VP_MDET_TX_TCLAN(i), 0xFFFF);
                        vf->mdd_tx_events.count++;
                        set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state);
                        if (netif_msg_tx_err(pf))
                                dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on VF %d\n",
                                         i);
                }

                reg = rd32(hw, VP_MDET_TX_TDPU(i));
                if (reg & VP_MDET_TX_TDPU_VALID_M) {
                        wr32(hw, VP_MDET_TX_TDPU(i), 0xFFFF);
                        vf->mdd_tx_events.count++;
                        set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state);
                        if (netif_msg_tx_err(pf))
                                dev_info(dev, "Malicious Driver Detection event TX_TDPU detected on VF %d\n",
                                         i);
                }

                reg = rd32(hw, VP_MDET_RX(i));
                if (reg & VP_MDET_RX_VALID_M) {
                        wr32(hw, VP_MDET_RX(i), 0xFFFF);
                        vf->mdd_rx_events.count++;
                        set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state);
                        if (netif_msg_rx_err(pf))
                                dev_info(dev, "Malicious Driver Detection event RX detected on VF %d\n",
                                         i);

                        /* Since the queue is disabled on VF Rx MDD events, the
                         * PF can be configured to reset the VF through ethtool
                         * private flag mdd-auto-reset-vf.
                         */
                        if (test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)) {
                                /* VF MDD event counters will be cleared by
                                 * reset, so print the event prior to reset.
                                 */
                                ice_print_vf_rx_mdd_event(vf);
                                ice_reset_vf(&pf->vf[i], false);
                        }
                }
        }

        ice_print_vfs_mdd_events(pf);
}

/**
 * ice_force_phys_link_state - Force the physical link state
 * @vsi: VSI to force the physical link state to up/down
 * @link_up: true/false indicates to set the physical link to up/down
 *
 * Force the physical link state by getting the current PHY capabilities from
 * hardware and setting the PHY config based on the determined capabilities. If
 * link changes a link event will be triggered because both the Enable Automatic
 * Link Update and LESM Enable bits are set when setting the PHY capabilities.
 *
 * Returns 0 on success, negative on failure
 */
static int ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
{
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_aqc_set_phy_cfg_data *cfg;
        struct ice_port_info *pi;
        struct device *dev;
        int retcode;

        if (!vsi || !vsi->port_info || !vsi->back)
                return -EINVAL;
        if (vsi->type != ICE_VSI_PF)
                return 0;

        dev = ice_pf_to_dev(vsi->back);

        pi = vsi->port_info;

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
                                      NULL);
        if (retcode) {
                dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n",
                        vsi->vsi_num, retcode);
                retcode = -EIO;
                goto out;
        }

        /* No change in link */
        if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
            link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP))
                goto out;

        /* Use the current user PHY configuration. The current user PHY
         * configuration is initialized during probe from PHY capabilities
         * software mode, and updated on set PHY configuration.
         */
        cfg = kmemdup(&pi->phy.curr_user_phy_cfg, sizeof(*cfg), GFP_KERNEL);
        if (!cfg) {
                retcode = -ENOMEM;
                goto out;
        }

        cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
        if (link_up)
                cfg->caps |= ICE_AQ_PHY_ENA_LINK;
        else
                cfg->caps &= ~ICE_AQ_PHY_ENA_LINK;

        retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL);
        if (retcode) {
                dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
                        vsi->vsi_num, retcode);
                retcode = -EIO;
        }

        kfree(cfg);
out:
        kfree(pcaps);
        return retcode;
}

/**
 * ice_init_nvm_phy_type - Initialize the NVM PHY type
 * @pi: port info structure
 *
 * Initialize nvm_phy_type_[low|high] for link lenient mode support
 */
static int ice_init_nvm_phy_type(struct ice_port_info *pi)
{
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_pf *pf = pi->hw->back;
        enum ice_status status;
        int err = 0;

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_NO_MEDIA, pcaps,
                                     NULL);

        if (status) {
                dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
                err = -EIO;
                goto out;
        }

        pf->nvm_phy_type_hi = pcaps->phy_type_high;
        pf->nvm_phy_type_lo = pcaps->phy_type_low;

out:
        kfree(pcaps);
        return err;
}

/**
 * ice_init_link_dflt_override - Initialize link default override
 * @pi: port info structure
 *
 * Initialize link default override and PHY total port shutdown during probe
 */
static void ice_init_link_dflt_override(struct ice_port_info *pi)
{
        struct ice_link_default_override_tlv *ldo;
        struct ice_pf *pf = pi->hw->back;

        ldo = &pf->link_dflt_override;
        if (ice_get_link_default_override(ldo, pi))
                return;

        if (!(ldo->options & ICE_LINK_OVERRIDE_PORT_DIS))
                return;

        /* Enable Total Port Shutdown (override/replace link-down-on-close
         * ethtool private flag) for ports with Port Disable bit set.
         */
        set_bit(ICE_FLAG_TOTAL_PORT_SHUTDOWN_ENA, pf->flags);
        set_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags);
}

/**
 * ice_init_phy_cfg_dflt_override - Initialize PHY cfg default override settings
 * @pi: port info structure
 *
 * If default override is enabled, initialize the user PHY cfg speed and FEC
 * settings using the default override mask from the NVM.
 *
 * The PHY should only be configured with the default override settings the
 * first time media is available. The ICE_LINK_DEFAULT_OVERRIDE_PENDING state
 * is used to indicate that the user PHY cfg default override is initialized
 * and the PHY has not been configured with the default override settings. The
 * state is set here, and cleared in ice_configure_phy the first time the PHY is
 * configured.
 *
 * This function should be called only if the FW doesn't support default
 * configuration mode, as reported by ice_fw_supports_report_dflt_cfg.
 */
static void ice_init_phy_cfg_dflt_override(struct ice_port_info *pi)
{
        struct ice_link_default_override_tlv *ldo;
        struct ice_aqc_set_phy_cfg_data *cfg;
        struct ice_phy_info *phy = &pi->phy;
        struct ice_pf *pf = pi->hw->back;

        ldo = &pf->link_dflt_override;

        /* If link default override is enabled, use to mask NVM PHY capabilities
         * for speed and FEC default configuration.
         */
        cfg = &phy->curr_user_phy_cfg;

        if (ldo->phy_type_low || ldo->phy_type_high) {
                cfg->phy_type_low = pf->nvm_phy_type_lo &
                                    cpu_to_le64(ldo->phy_type_low);
                cfg->phy_type_high = pf->nvm_phy_type_hi &
                                     cpu_to_le64(ldo->phy_type_high);
        }
        cfg->link_fec_opt = ldo->fec_options;
        phy->curr_user_fec_req = ICE_FEC_AUTO;

        set_bit(ICE_LINK_DEFAULT_OVERRIDE_PENDING, pf->state);
}

/**
 * ice_init_phy_user_cfg - Initialize the PHY user configuration
 * @pi: port info structure
 *
 * Initialize the current user PHY configuration, speed, FEC, and FC requested
 * mode to default. The PHY defaults are from get PHY capabilities topology
 * with media so call when media is first available. An error is returned if
 * called when media is not available. The PHY initialization completed state is
 * set here.
 *
 * These configurations are used when setting PHY
 * configuration. The user PHY configuration is updated on set PHY
 * configuration. Returns 0 on success, negative on failure
 */
static int ice_init_phy_user_cfg(struct ice_port_info *pi)
{
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_phy_info *phy = &pi->phy;
        struct ice_pf *pf = pi->hw->back;
        enum ice_status status;
        int err = 0;

        if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
                return -EIO;

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        if (ice_fw_supports_report_dflt_cfg(pi->hw))
                status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
                                             pcaps, NULL);
        else
                status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
                                             pcaps, NULL);
        if (status) {
                dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
                err = -EIO;
                goto err_out;
        }

        ice_copy_phy_caps_to_cfg(pi, pcaps, &pi->phy.curr_user_phy_cfg);

        /* check if lenient mode is supported and enabled */
        if (ice_fw_supports_link_override(pi->hw) &&
            !(pcaps->module_compliance_enforcement &
              ICE_AQC_MOD_ENFORCE_STRICT_MODE)) {
                set_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags);

                /* if the FW supports default PHY configuration mode, then the driver
                 * does not have to apply link override settings. If not,
                 * initialize user PHY configuration with link override values
                 */
                if (!ice_fw_supports_report_dflt_cfg(pi->hw) &&
                    (pf->link_dflt_override.options & ICE_LINK_OVERRIDE_EN)) {
                        ice_init_phy_cfg_dflt_override(pi);
                        goto out;
                }
        }

        /* if link default override is not enabled, set user flow control and
         * FEC settings based on what get_phy_caps returned
         */
        phy->curr_user_fec_req = ice_caps_to_fec_mode(pcaps->caps,
                                                      pcaps->link_fec_options);
        phy->curr_user_fc_req = ice_caps_to_fc_mode(pcaps->caps);

out:
        phy->curr_user_speed_req = ICE_AQ_LINK_SPEED_M;
        set_bit(ICE_PHY_INIT_COMPLETE, pf->state);
err_out:
        kfree(pcaps);
        return err;
}

/**
 * ice_configure_phy - configure PHY
 * @vsi: VSI of PHY
 *
 * Set the PHY configuration. If the current PHY configuration is the same as
 * the curr_user_phy_cfg, then do nothing to avoid link flap. Otherwise
 * configure the based get PHY capabilities for topology with media.
 */
static int ice_configure_phy(struct ice_vsi *vsi)
{
        struct device *dev = ice_pf_to_dev(vsi->back);
        struct ice_port_info *pi = vsi->port_info;
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_aqc_set_phy_cfg_data *cfg;
        struct ice_phy_info *phy = &pi->phy;
        struct ice_pf *pf = vsi->back;
        enum ice_status status;
        int err = 0;

        /* Ensure we have media as we cannot configure a medialess port */
        if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
                return -EPERM;

        ice_print_topo_conflict(vsi);

        if (phy->link_info.topo_media_conflict == ICE_AQ_LINK_TOPO_UNSUPP_MEDIA)
                return -EPERM;

        if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags))
                return ice_force_phys_link_state(vsi, true);

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        /* Get current PHY config */
        status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
                                     NULL);
        if (status) {
                dev_err(dev, "Failed to get PHY configuration, VSI %d error %s\n",
                        vsi->vsi_num, ice_stat_str(status));
                err = -EIO;
                goto done;
        }

        /* If PHY enable link is configured and configuration has not changed,
         * there's nothing to do
         */
        if (pcaps->caps & ICE_AQC_PHY_EN_LINK &&
            ice_phy_caps_equals_cfg(pcaps, &phy->curr_user_phy_cfg))
                goto done;

        /* Use PHY topology as baseline for configuration */
        memset(pcaps, 0, sizeof(*pcaps));
        if (ice_fw_supports_report_dflt_cfg(pi->hw))
                status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
                                             pcaps, NULL);
        else
                status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
                                             pcaps, NULL);
        if (status) {
                dev_err(dev, "Failed to get PHY caps, VSI %d error %s\n",
                        vsi->vsi_num, ice_stat_str(status));
                err = -EIO;
                goto done;
        }

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

        ice_copy_phy_caps_to_cfg(pi, pcaps, cfg);

        /* Speed - If default override pending, use curr_user_phy_cfg set in
         * ice_init_phy_user_cfg_ldo.
         */
        if (test_and_clear_bit(ICE_LINK_DEFAULT_OVERRIDE_PENDING,
                               vsi->back->state)) {
                cfg->phy_type_low = phy->curr_user_phy_cfg.phy_type_low;
                cfg->phy_type_high = phy->curr_user_phy_cfg.phy_type_high;
        } else {
                u64 phy_low = 0, phy_high = 0;

                ice_update_phy_type(&phy_low, &phy_high,
                                    pi->phy.curr_user_speed_req);
                cfg->phy_type_low = pcaps->phy_type_low & cpu_to_le64(phy_low);
                cfg->phy_type_high = pcaps->phy_type_high &
                                     cpu_to_le64(phy_high);
        }

        /* Can't provide what was requested; use PHY capabilities */
        if (!cfg->phy_type_low && !cfg->phy_type_high) {
                cfg->phy_type_low = pcaps->phy_type_low;
                cfg->phy_type_high = pcaps->phy_type_high;
        }

        /* FEC */
        ice_cfg_phy_fec(pi, cfg, phy->curr_user_fec_req);

        /* Can't provide what was requested; use PHY capabilities */
        if (cfg->link_fec_opt !=
            (cfg->link_fec_opt & pcaps->link_fec_options)) {
                cfg->caps |= pcaps->caps & ICE_AQC_PHY_EN_AUTO_FEC;
                cfg->link_fec_opt = pcaps->link_fec_options;
        }

        /* Flow Control - always supported; no need to check against
         * capabilities
         */
        ice_cfg_phy_fc(pi, cfg, phy->curr_user_fc_req);

        /* Enable link and link update */
        cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT | ICE_AQ_PHY_ENA_LINK;

        status = ice_aq_set_phy_cfg(&pf->hw, pi, cfg, NULL);
        if (status) {
                dev_err(dev, "Failed to set phy config, VSI %d error %s\n",
                        vsi->vsi_num, ice_stat_str(status));
                err = -EIO;
        }

        kfree(cfg);
done:
        kfree(pcaps);
        return err;
}

/**
 * ice_check_media_subtask - Check for media
 * @pf: pointer to PF struct
 *
 * If media is available, then initialize PHY user configuration if it is not
 * been, and configure the PHY if the interface is up.
 */
static void ice_check_media_subtask(struct ice_pf *pf)
{
        struct ice_port_info *pi;
        struct ice_vsi *vsi;
        int err;

        /* No need to check for media if it's already present */
        if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags))
                return;

        vsi = ice_get_main_vsi(pf);
        if (!vsi)

                return;

        /* Refresh link info and check if media is present */
        pi = vsi->port_info;
        err = ice_update_link_info(pi);
        if (err)
                return;

        if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
                if (!test_bit(ICE_PHY_INIT_COMPLETE, pf->state))
                        ice_init_phy_user_cfg(pi);

                /* PHY settings are reset on media insertion, reconfigure
                 * PHY to preserve settings.
                 */
                if (test_bit(ICE_VSI_DOWN, vsi->state) &&
                    test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
                        return;

                err = ice_configure_phy(vsi);
                if (!err)
                        clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);

                /* A Link Status Event will be generated; the event handler
                 * will complete bringing the interface up
                 */
        }
}

/**
 * ice_service_task - manage and run subtasks
 * @work: pointer to work_struct contained by the PF struct
 */
static void ice_service_task(struct work_struct *work)
{
        struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
        unsigned long start_time = jiffies;

        /* subtasks */

        /* process reset requests first */
        ice_reset_subtask(pf);

        /* bail if a reset/recovery cycle is pending or rebuild failed */
        if (ice_is_reset_in_progress(pf->state) ||
            test_bit(ICE_SUSPENDED, pf->state) ||
            test_bit(ICE_NEEDS_RESTART, pf->state)) {
                ice_service_task_complete(pf);
                return;
        }

        ice_clean_adminq_subtask(pf);
        ice_check_media_subtask(pf);
        ice_check_for_hang_subtask(pf);
        ice_sync_fltr_subtask(pf);
        ice_handle_mdd_event(pf);
        ice_watchdog_subtask(pf);

        if (ice_is_safe_mode(pf)) {
                ice_service_task_complete(pf);
                return;
        }

        ice_process_vflr_event(pf);
        ice_clean_mailboxq_subtask(pf);
        ice_sync_arfs_fltrs(pf);
        ice_flush_fdir_ctx(pf);

        /* Clear ICE_SERVICE_SCHED flag to allow scheduling next event */
        ice_service_task_complete(pf);

        /* If the tasks have taken longer than one service timer period
         * or there is more work to be done, reset the service timer to
         * schedule the service task now.
         */
        if (time_after(jiffies, (start_time + pf->serv_tmr_period)) ||
            test_bit(ICE_MDD_EVENT_PENDING, pf->state) ||
            test_bit(ICE_VFLR_EVENT_PENDING, pf->state) ||
            test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
            test_bit(ICE_FD_VF_FLUSH_CTX, pf->state) ||
            test_bit(ICE_ADMINQ_EVENT_PENDING, pf->state))
                mod_timer(&pf->serv_tmr, jiffies);
}

/**
 * ice_set_ctrlq_len - helper function to set controlq length
 * @hw: pointer to the HW instance
 */
static void ice_set_ctrlq_len(struct ice_hw *hw)
{
        hw->adminq.num_rq_entries = ICE_AQ_LEN;
        hw->adminq.num_sq_entries = ICE_AQ_LEN;
        hw->adminq.rq_buf_size = ICE_AQ_MAX_BUF_LEN;
        hw->adminq.sq_buf_size = ICE_AQ_MAX_BUF_LEN;
        hw->mailboxq.num_rq_entries = PF_MBX_ARQLEN_ARQLEN_M;
        hw->mailboxq.num_sq_entries = ICE_MBXSQ_LEN;
        hw->mailboxq.rq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
        hw->mailboxq.sq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
}

/**
 * ice_schedule_reset - schedule a reset
 * @pf: board private structure
 * @reset: reset being requested
 */
int ice_schedule_reset(struct ice_pf *pf, enum ice_reset_req reset)
{
        struct device *dev = ice_pf_to_dev(pf);

        /* bail out if earlier reset has failed */
        if (test_bit(ICE_RESET_FAILED, pf->state)) {
                dev_dbg(dev, "earlier reset has failed\n");
                return -EIO;
        }
        /* bail if reset/recovery already in progress */
        if (ice_is_reset_in_progress(pf->state)) {
                dev_dbg(dev, "Reset already in progress\n");
                return -EBUSY;
        }

        switch (reset) {
        case ICE_RESET_PFR:
                set_bit(ICE_PFR_REQ, pf->state);
                break;
        case ICE_RESET_CORER:
                set_bit(ICE_CORER_REQ, pf->state);
                break;
        case ICE_RESET_GLOBR:
                set_bit(ICE_GLOBR_REQ, pf->state);
                break;
        default:
                return -EINVAL;
        }

        ice_service_task_schedule(pf);
        return 0;
}

/**
 * ice_irq_affinity_notify - Callback for affinity changes
 * @notify: context as to what irq was changed
 * @mask: the new affinity mask
 *
 * This is a callback function used by the irq_set_affinity_notifier function
 * so that we may register to receive changes to the irq affinity masks.
 */
static void
ice_irq_affinity_notify(struct irq_affinity_notify *notify,
                        const cpumask_t *mask)
{
        struct ice_q_vector *q_vector =
                container_of(notify, struct ice_q_vector, affinity_notify);

        cpumask_copy(&q_vector->affinity_mask, mask);
}

/**
 * ice_irq_affinity_release - Callback for affinity notifier release
 * @ref: internal core kernel usage
 *
 * This is a callback function used by the irq_set_affinity_notifier function
 * to inform the current notification subscriber that they will no longer
 * receive notifications.
 */
static void ice_irq_affinity_release(struct kref __always_unused *ref) {}

/**
 * ice_vsi_ena_irq - Enable IRQ for the given VSI
 * @vsi: the VSI being configured
 */
static int ice_vsi_ena_irq(struct ice_vsi *vsi)
{
        struct ice_hw *hw = &vsi->back->hw;
        int i;

        ice_for_each_q_vector(vsi, i)
                ice_irq_dynamic_ena(hw, vsi, vsi->q_vectors[i]);

        ice_flush(hw);
        return 0;
}

/**
 * ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI
 * @vsi: the VSI being configured
 * @basename: name for the vector
 */
static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
{
        int q_vectors = vsi->num_q_vectors;
        struct ice_pf *pf = vsi->back;
        int base = vsi->base_vector;
        struct device *dev;
        int rx_int_idx = 0;
        int tx_int_idx = 0;
        int vector, err;
        int irq_num;

        dev = ice_pf_to_dev(pf);
        for (vector = 0; vector < q_vectors; vector++) {
                struct ice_q_vector *q_vector = vsi->q_vectors[vector];

                irq_num = pf->msix_entries[base + vector].vector;

                if (q_vector->tx.ring && q_vector->rx.ring) {
                        snprintf(q_vector->name, sizeof(q_vector->name) - 1,
                                 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
                        tx_int_idx++;
                } else if (q_vector->rx.ring) {
                        snprintf(q_vector->name, sizeof(q_vector->name) - 1,
                                 "%s-%s-%d", basename, "rx", rx_int_idx++);
                } else if (q_vector->tx.ring) {
                        snprintf(q_vector->name, sizeof(q_vector->name) - 1,
                                 "%s-%s-%d", basename, "tx", tx_int_idx++);
                } else {
                        /* skip this unused q_vector */
                        continue;
                }
                if (vsi->type == ICE_VSI_CTRL && vsi->vf_id != ICE_INVAL_VFID)
                        err = devm_request_irq(dev, irq_num, vsi->irq_handler,
                                               IRQF_SHARED, q_vector->name,
                                               q_vector);
                else
                        err = devm_request_irq(dev, irq_num, vsi->irq_handler,
                                               0, q_vector->name, q_vector);
                if (err) {
                        netdev_err(vsi->netdev, "MSIX request_irq failed, error: %d\n",
                                   err);
                        goto free_q_irqs;
                }

                /* register for affinity change notifications */
                if (!IS_ENABLED(CONFIG_RFS_ACCEL)) {
                        struct irq_affinity_notify *affinity_notify;

                        affinity_notify = &q_vector->affinity_notify;
                        affinity_notify->notify = ice_irq_affinity_notify;
                        affinity_notify->release = ice_irq_affinity_release;
                        irq_set_affinity_notifier(irq_num, affinity_notify);
                }

                /* assign the mask for this irq */
                irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
        }

        vsi->irqs_ready = true;
        return 0;

free_q_irqs:
        while (vector) {
                vector--;
                irq_num = pf->msix_entries[base + vector].vector;
                if (!IS_ENABLED(CONFIG_RFS_ACCEL))
                        irq_set_affinity_notifier(irq_num, NULL);
                irq_set_affinity_hint(irq_num, NULL);
                devm_free_irq(dev, irq_num, &vsi->q_vectors[vector]);
        }
        return err;
}

/**
 * ice_xdp_alloc_setup_rings - Allocate and setup Tx rings for XDP
 * @vsi: VSI to setup Tx rings used by XDP
 *
 * Return 0 on success and negative value on error
 */
static int ice_xdp_alloc_setup_rings(struct ice_vsi *vsi)
{
        struct device *dev = ice_pf_to_dev(vsi->back);
        int i;

        for (i = 0; i < vsi->num_xdp_txq; i++) {
                u16 xdp_q_idx = vsi->alloc_txq + i;
                struct ice_ring *xdp_ring;

                xdp_ring = kzalloc(sizeof(*xdp_ring), GFP_KERNEL);

                if (!xdp_ring)
                        goto free_xdp_rings;

                xdp_ring->q_index = xdp_q_idx;
                xdp_ring->reg_idx = vsi->txq_map[xdp_q_idx];
                xdp_ring->ring_active = false;
                xdp_ring->vsi = vsi;
                xdp_ring->netdev = NULL;
                xdp_ring->dev = dev;
                xdp_ring->count = vsi->num_tx_desc;
                WRITE_ONCE(vsi->xdp_rings[i], xdp_ring);
                if (ice_setup_tx_ring(xdp_ring))
                        goto free_xdp_rings;
                ice_set_ring_xdp(xdp_ring);
                xdp_ring->xsk_pool = ice_xsk_pool(xdp_ring);
        }

        return 0;

free_xdp_rings:
        for (; i >= 0; i--)
                if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
                        ice_free_tx_ring(vsi->xdp_rings[i]);
        return -ENOMEM;
}

/**
 * ice_vsi_assign_bpf_prog - set or clear bpf prog pointer on VSI
 * @vsi: VSI to set the bpf prog on
 * @prog: the bpf prog pointer
 */
static void ice_vsi_assign_bpf_prog(struct ice_vsi *vsi, struct bpf_prog *prog)
{
        struct bpf_prog *old_prog;
        int i;

        old_prog = xchg(&vsi->xdp_prog, prog);
        if (old_prog)
                bpf_prog_put(old_prog);

        ice_for_each_rxq(vsi, i)
                WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
}

/**
 * ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP
 * @vsi: VSI to bring up Tx rings used by XDP
 * @prog: bpf program that will be assigned to VSI
 *
 * Return 0 on success and negative value on error
 */
int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        int xdp_rings_rem = vsi->num_xdp_txq;
        struct ice_pf *pf = vsi->back;
        struct ice_qs_cfg xdp_qs_cfg = {
                .qs_mutex = &pf->avail_q_mutex,
                .pf_map = pf->avail_txqs,
                .pf_map_size = pf->max_pf_txqs,
                .q_count = vsi->num_xdp_txq,
                .scatter_count = ICE_MAX_SCATTER_TXQS,
                .vsi_map = vsi->txq_map,
                .vsi_map_offset = vsi->alloc_txq,
                .mapping_mode = ICE_VSI_MAP_CONTIG
        };
        enum ice_status status;
        struct device *dev;
        int i, v_idx;

        dev = ice_pf_to_dev(pf);
        vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq,
                                      sizeof(*vsi->xdp_rings), GFP_KERNEL);
        if (!vsi->xdp_rings)
                return -ENOMEM;

        vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode;
        if (__ice_vsi_get_qs(&xdp_qs_cfg))
                goto err_map_xdp;

        if (ice_xdp_alloc_setup_rings(vsi))
                goto clear_xdp_rings;

        /* follow the logic from ice_vsi_map_rings_to_vectors */
        ice_for_each_q_vector(vsi, v_idx) {
                struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
                int xdp_rings_per_v, q_id, q_base;

                xdp_rings_per_v = DIV_ROUND_UP(xdp_rings_rem,
                                               vsi->num_q_vectors - v_idx);
                q_base = vsi->num_xdp_txq - xdp_rings_rem;

                for (q_id = q_base; q_id < (q_base + xdp_rings_per_v); q_id++) {
                        struct ice_ring *xdp_ring = vsi->xdp_rings[q_id];

                        xdp_ring->q_vector = q_vector;
                        xdp_ring->next = q_vector->tx.ring;
                        q_vector->tx.ring = xdp_ring;
                }
                xdp_rings_rem -= xdp_rings_per_v;
        }

        /* omit the scheduler update if in reset path; XDP queues will be
         * taken into account at the end of ice_vsi_rebuild, where
         * ice_cfg_vsi_lan is being called
         */
        if (ice_is_reset_in_progress(pf->state))
                return 0;

        /* tell the Tx scheduler that right now we have
         * additional queues
         */
        for (i = 0; i < vsi->tc_cfg.numtc; i++)
                max_txqs[i] = vsi->num_txq + vsi->num_xdp_txq;

        status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
                                 max_txqs);
        if (status) {
                dev_err(dev, "Failed VSI LAN queue config for XDP, error: %s\n",
                        ice_stat_str(status));
                goto clear_xdp_rings;
        }
        ice_vsi_assign_bpf_prog(vsi, prog);

        return 0;
clear_xdp_rings:
        for (i = 0; i < vsi->num_xdp_txq; i++)
                if (vsi->xdp_rings[i]) {
                        kfree_rcu(vsi->xdp_rings[i], rcu);
                        vsi->xdp_rings[i] = NULL;
                }

err_map_xdp:
        mutex_lock(&pf->avail_q_mutex);
        for (i = 0; i < vsi->num_xdp_txq; i++) {
                clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
                vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
        }
        mutex_unlock(&pf->avail_q_mutex);

        devm_kfree(dev, vsi->xdp_rings);
        return -ENOMEM;
}

/**
 * ice_destroy_xdp_rings - undo the configuration made by ice_prepare_xdp_rings
 * @vsi: VSI to remove XDP rings
 *
 * Detach XDP rings from irq vectors, clean up the PF bitmap and free
 * resources
 */
int ice_destroy_xdp_rings(struct ice_vsi *vsi)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        struct ice_pf *pf = vsi->back;
        int i, v_idx;

        /* q_vectors are freed in reset path so there's no point in detaching
         * rings; in case of rebuild being triggered not from reset bits
         * in pf->state won't be set, so additionally check first q_vector
         * against NULL
         */
        if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
                goto free_qmap;

        ice_for_each_q_vector(vsi, v_idx) {
                struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
                struct ice_ring *ring;

                ice_for_each_ring(ring, q_vector->tx)
                        if (!ring->tx_buf || !ice_ring_is_xdp(ring))
                                break;

                /* restore the value of last node prior to XDP setup */
                q_vector->tx.ring = ring;
        }

free_qmap:
        mutex_lock(&pf->avail_q_mutex);
        for (i = 0; i < vsi->num_xdp_txq; i++) {
                clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
                vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
        }
        mutex_unlock(&pf->avail_q_mutex);

        for (i = 0; i < vsi->num_xdp_txq; i++)
                if (vsi->xdp_rings[i]) {
                        if (vsi->xdp_rings[i]->desc)
                                ice_free_tx_ring(vsi->xdp_rings[i]);
                        kfree_rcu(vsi->xdp_rings[i], rcu);
                        vsi->xdp_rings[i] = NULL;
                }

        devm_kfree(ice_pf_to_dev(pf), vsi->xdp_rings);
        vsi->xdp_rings = NULL;

        if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
                return 0;

        ice_vsi_assign_bpf_prog(vsi, NULL);

        /* notify Tx scheduler that we destroyed XDP queues and bring
         * back the old number of child nodes
         */
        for (i = 0; i < vsi->tc_cfg.numtc; i++)
                max_txqs[i] = vsi->num_txq;

        /* change number of XDP Tx queues to 0 */
        vsi->num_xdp_txq = 0;

        return ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
                               max_txqs);
}

/**
 * ice_vsi_rx_napi_schedule - Schedule napi on RX queues from VSI
 * @vsi: VSI to schedule napi on
 */
static void ice_vsi_rx_napi_schedule(struct ice_vsi *vsi)
{
        int i;

        ice_for_each_rxq(vsi, i) {
                struct ice_ring *rx_ring = vsi->rx_rings[i];

                if (rx_ring->xsk_pool)
                        napi_schedule(&rx_ring->q_vector->napi);
        }
}

/**
 * ice_xdp_setup_prog - Add or remove XDP eBPF program
 * @vsi: VSI to setup XDP for
 * @prog: XDP program
 * @extack: netlink extended ack
 */
static int
ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
                   struct netlink_ext_ack *extack)
{
        int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
        bool if_running = netif_running(vsi->netdev);
        int ret = 0, xdp_ring_err = 0;

        if (frame_size > vsi->rx_buf_len) {
                NL_SET_ERR_MSG_MOD(extack, "MTU too large for loading XDP");
                return -EOPNOTSUPP;
        }

        /* need to stop netdev while setting up the program for Rx rings */
        if (if_running && !test_and_set_bit(ICE_VSI_DOWN, vsi->state)) {
                ret = ice_down(vsi);
                if (ret) {
                        NL_SET_ERR_MSG_MOD(extack, "Preparing device for XDP attach failed");
                        return ret;
                }
        }

        if (!ice_is_xdp_ena_vsi(vsi) && prog) {
                vsi->num_xdp_txq = vsi->alloc_rxq;
                xdp_ring_err = ice_prepare_xdp_rings(vsi, prog);
                if (xdp_ring_err)
                        NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed");
        } else if (ice_is_xdp_ena_vsi(vsi) && !prog) {
                xdp_ring_err = ice_destroy_xdp_rings(vsi);
                if (xdp_ring_err)
                        NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Tx resources failed");
        } else {
                ice_vsi_assign_bpf_prog(vsi, prog);
        }

        if (if_running)
                ret = ice_up(vsi);

        if (!ret && prog)
                ice_vsi_rx_napi_schedule(vsi);

        return (ret || xdp_ring_err) ? -ENOMEM : 0;
}

/**
 * ice_xdp_safe_mode - XDP handler for safe mode
 * @dev: netdevice
 * @xdp: XDP command
 */
static int ice_xdp_safe_mode(struct net_device __always_unused *dev,
                             struct netdev_bpf *xdp)
{
        NL_SET_ERR_MSG_MOD(xdp->extack,
                           "Please provide working DDP firmware package in order to use XDP\n"
                           "Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst");
        return -EOPNOTSUPP;
}

/**
 * ice_xdp - implements XDP handler
 * @dev: netdevice
 * @xdp: XDP command
 */
static int ice_xdp(struct net_device *dev, struct netdev_bpf *xdp)
{
        struct ice_netdev_priv *np = netdev_priv(dev);
        struct ice_vsi *vsi = np->vsi;

        if (vsi->type != ICE_VSI_PF) {
                NL_SET_ERR_MSG_MOD(xdp->extack, "XDP can be loaded only on PF VSI");
                return -EINVAL;
        }

        switch (xdp->command) {
        case XDP_SETUP_PROG:
                return ice_xdp_setup_prog(vsi, xdp->prog, xdp->extack);
        case XDP_SETUP_XSK_POOL:
                return ice_xsk_pool_setup(vsi, xdp->xsk.pool,
                                          xdp->xsk.queue_id);
        default:
                return -EINVAL;
        }
}

/**
 * ice_ena_misc_vector - enable the non-queue interrupts
 * @pf: board private structure
 */
static void ice_ena_misc_vector(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        u32 val;

        /* Disable anti-spoof detection interrupt to prevent spurious event
         * interrupts during a function reset. Anti-spoof functionally is
         * still supported.
         */
        val = rd32(hw, GL_MDCK_TX_TDPU);
        val |= GL_MDCK_TX_TDPU_RCU_ANTISPOOF_ITR_DIS_M;
        wr32(hw, GL_MDCK_TX_TDPU, val);

        /* clear things first */
        wr32(hw, PFINT_OICR_ENA, 0);    /* disable all */
        rd32(hw, PFINT_OICR);           /* read to clear */

        val = (PFINT_OICR_ECC_ERR_M |
               PFINT_OICR_MAL_DETECT_M |
               PFINT_OICR_GRST_M |
               PFINT_OICR_PCI_EXCEPTION_M |
               PFINT_OICR_VFLR_M |
               PFINT_OICR_HMC_ERR_M |
               PFINT_OICR_PE_CRITERR_M);

        wr32(hw, PFINT_OICR_ENA, val);

        /* SW_ITR_IDX = 0, but don't change INTENA */
        wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
             GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);
}

/**
 * ice_misc_intr - misc interrupt handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
static irqreturn_t ice_misc_intr(int __always_unused irq, void *data)
{
        struct ice_pf *pf = (struct ice_pf *)data;
        struct ice_hw *hw = &pf->hw;
        irqreturn_t ret = IRQ_NONE;
        struct device *dev;
        u32 oicr, ena_mask;

        dev = ice_pf_to_dev(pf);
        set_bit(ICE_ADMINQ_EVENT_PENDING, pf->state);
        set_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state);

        oicr = rd32(hw, PFINT_OICR);
        ena_mask = rd32(hw, PFINT_OICR_ENA);

        if (oicr & PFINT_OICR_SWINT_M) {
                ena_mask &= ~PFINT_OICR_SWINT_M;
                pf->sw_int_count++;
        }

        if (oicr & PFINT_OICR_MAL_DETECT_M) {
                ena_mask &= ~PFINT_OICR_MAL_DETECT_M;
                set_bit(ICE_MDD_EVENT_PENDING, pf->state);
        }
        if (oicr & PFINT_OICR_VFLR_M) {
                /* disable any further VFLR event notifications */
                if (test_bit(ICE_VF_RESETS_DISABLED, pf->state)) {
                        u32 reg = rd32(hw, PFINT_OICR_ENA);

                        reg &= ~PFINT_OICR_VFLR_M;
                        wr32(hw, PFINT_OICR_ENA, reg);
                } else {
                        ena_mask &= ~PFINT_OICR_VFLR_M;
                        set_bit(ICE_VFLR_EVENT_PENDING, pf->state);
                }
        }

        if (oicr & PFINT_OICR_GRST_M) {
                u32 reset;

                /* we have a reset warning */
                ena_mask &= ~PFINT_OICR_GRST_M;
                reset = (rd32(hw, GLGEN_RSTAT) & GLGEN_RSTAT_RESET_TYPE_M) >>
                        GLGEN_RSTAT_RESET_TYPE_S;

                if (reset == ICE_RESET_CORER)
                        pf->corer_count++;
                else if (reset == ICE_RESET_GLOBR)
                        pf->globr_count++;
                else if (reset == ICE_RESET_EMPR)
                        pf->empr_count++;
                else
                        dev_dbg(dev, "Invalid reset type %d\n", reset);

                /* If a reset cycle isn't already in progress, we set a bit in
                 * pf->state so that the service task can start a reset/rebuild.
                 * We also make note of which reset happened so that peer
                 * devices/drivers can be informed.
                 */
                if (!test_and_set_bit(ICE_RESET_OICR_RECV, pf->state)) {
                        if (reset == ICE_RESET_CORER)
                                set_bit(ICE_CORER_RECV, pf->state);
                        else if (reset == ICE_RESET_GLOBR)
                                set_bit(ICE_GLOBR_RECV, pf->state);
                        else
                                set_bit(ICE_EMPR_RECV, pf->state);

                        /* There are couple of different bits at play here.
                         * hw->reset_ongoing indicates whether the hardware is
                         * in reset. This is set to true when a reset interrupt
                         * is received and set back to false after the driver
                         * has determined that the hardware is out of reset.
                         *
                         * ICE_RESET_OICR_RECV in pf->state indicates
                         * that a post reset rebuild is required before the
                         * driver is operational again. This is set above.
                         *
                         * As this is the start of the reset/rebuild cycle, set
                         * both to indicate that.
                         */
                        hw->reset_ongoing = true;
                }
        }

        if (oicr & PFINT_OICR_HMC_ERR_M) {
                ena_mask &= ~PFINT_OICR_HMC_ERR_M;
                dev_dbg(dev, "HMC Error interrupt - info 0x%x, data 0x%x\n",
                        rd32(hw, PFHMC_ERRORINFO),
                        rd32(hw, PFHMC_ERRORDATA));
        }

        /* Report any remaining unexpected interrupts */
        oicr &= ena_mask;
        if (oicr) {
                dev_dbg(dev, "unhandled interrupt oicr=0x%08x\n", oicr);
                /* If a critical error is pending there is no choice but to
                 * reset the device.
                 */
                if (oicr & (PFINT_OICR_PE_CRITERR_M |
                            PFINT_OICR_PCI_EXCEPTION_M |
                            PFINT_OICR_ECC_ERR_M)) {
                        set_bit(ICE_PFR_REQ, pf->state);
                        ice_service_task_schedule(pf);
                }
        }
        ret = IRQ_HANDLED;

        ice_service_task_schedule(pf);
        ice_irq_dynamic_ena(hw, NULL, NULL);

        return ret;
}

/**
 * ice_dis_ctrlq_interrupts - disable control queue interrupts
 * @hw: pointer to HW structure
 */
static void ice_dis_ctrlq_interrupts(struct ice_hw *hw)
{
        /* disable Admin queue Interrupt causes */
        wr32(hw, PFINT_FW_CTL,
             rd32(hw, PFINT_FW_CTL) & ~PFINT_FW_CTL_CAUSE_ENA_M);

        /* disable Mailbox queue Interrupt causes */
        wr32(hw, PFINT_MBX_CTL,
             rd32(hw, PFINT_MBX_CTL) & ~PFINT_MBX_CTL_CAUSE_ENA_M);

        /* disable Control queue Interrupt causes */
        wr32(hw, PFINT_OICR_CTL,
             rd32(hw, PFINT_OICR_CTL) & ~PFINT_OICR_CTL_CAUSE_ENA_M);

        ice_flush(hw);
}

/**
 * ice_free_irq_msix_misc - Unroll misc vector setup
 * @pf: board private structure
 */
static void ice_free_irq_msix_misc(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;

        ice_dis_ctrlq_interrupts(hw);

        /* disable OICR interrupt */
        wr32(hw, PFINT_OICR_ENA, 0);
        ice_flush(hw);

        if (pf->msix_entries) {
                synchronize_irq(pf->msix_entries[pf->oicr_idx].vector);
                devm_free_irq(ice_pf_to_dev(pf),
                              pf->msix_entries[pf->oicr_idx].vector, pf);
        }

        pf->num_avail_sw_msix += 1;
        ice_free_res(pf->irq_tracker, pf->oicr_idx, ICE_RES_MISC_VEC_ID);
}

/**
 * ice_ena_ctrlq_interrupts - enable control queue interrupts
 * @hw: pointer to HW structure
 * @reg_idx: HW vector index to associate the control queue interrupts with
 */
static void ice_ena_ctrlq_interrupts(struct ice_hw *hw, u16 reg_idx)
{
        u32 val;

        val = ((reg_idx & PFINT_OICR_CTL_MSIX_INDX_M) |
               PFINT_OICR_CTL_CAUSE_ENA_M);
        wr32(hw, PFINT_OICR_CTL, val);

        /* enable Admin queue Interrupt causes */
        val = ((reg_idx & PFINT_FW_CTL_MSIX_INDX_M) |
               PFINT_FW_CTL_CAUSE_ENA_M);
        wr32(hw, PFINT_FW_CTL, val);

        /* enable Mailbox queue Interrupt causes */
        val = ((reg_idx & PFINT_MBX_CTL_MSIX_INDX_M) |
               PFINT_MBX_CTL_CAUSE_ENA_M);
        wr32(hw, PFINT_MBX_CTL, val);

        ice_flush(hw);
}

/**
 * ice_req_irq_msix_misc - Setup the misc vector to handle non queue events
 * @pf: board private structure
 *
 * This sets up the handler for MSIX 0, which is used to manage the
 * non-queue interrupts, e.g. AdminQ and errors. This is not used
 * when in MSI or Legacy interrupt mode.
 */
static int ice_req_irq_msix_misc(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        int oicr_idx, err = 0;

        if (!pf->int_name[0])
                snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc",
                         dev_driver_string(dev), dev_name(dev));

        /* Do not request IRQ but do enable OICR interrupt since settings are
         * lost during reset. Note that this function is called only during
         * rebuild path and not while reset is in progress.
         */
        if (ice_is_reset_in_progress(pf->state))
                goto skip_req_irq;

        /* reserve one vector in irq_tracker for misc interrupts */
        oicr_idx = ice_get_res(pf, pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
        if (oicr_idx < 0)
                return oicr_idx;

        pf->num_avail_sw_msix -= 1;
        pf->oicr_idx = (u16)oicr_idx;

        err = devm_request_irq(dev, pf->msix_entries[pf->oicr_idx].vector,
                               ice_misc_intr, 0, pf->int_name, pf);
        if (err) {
                dev_err(dev, "devm_request_irq for %s failed: %d\n",
                        pf->int_name, err);
                ice_free_res(pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
                pf->num_avail_sw_msix += 1;
                return err;
        }

skip_req_irq:
        ice_ena_misc_vector(pf);

        ice_ena_ctrlq_interrupts(hw, pf->oicr_idx);
        wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_idx),
             ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);

        ice_flush(hw);
        ice_irq_dynamic_ena(hw, NULL, NULL);

        return 0;
}

/**
 * ice_napi_add - register NAPI handler for the VSI
 * @vsi: VSI for which NAPI handler is to be registered
 *
 * This function is only called in the driver's load path. Registering the NAPI
 * handler is done in ice_vsi_alloc_q_vector() for all other cases (i.e. resume,
 * reset/rebuild, etc.)
 */
static void ice_napi_add(struct ice_vsi *vsi)
{
        int v_idx;

        if (!vsi->netdev)
                return;

        ice_for_each_q_vector(vsi, v_idx)
                netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx]->napi,
                               ice_napi_poll, NAPI_POLL_WEIGHT);
}

/**
 * ice_set_ops - set netdev and ethtools ops for the given netdev
 * @netdev: netdev instance
 */
static void ice_set_ops(struct net_device *netdev)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);

        if (ice_is_safe_mode(pf)) {
                netdev->netdev_ops = &ice_netdev_safe_mode_ops;
                ice_set_ethtool_safe_mode_ops(netdev);
                return;
        }

        netdev->netdev_ops = &ice_netdev_ops;
        netdev->udp_tunnel_nic_info = &pf->hw.udp_tunnel_nic;
        ice_set_ethtool_ops(netdev);
}

/**
 * ice_set_netdev_features - set features for the given netdev
 * @netdev: netdev instance
 */
static void ice_set_netdev_features(struct net_device *netdev)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);
        netdev_features_t csumo_features;
        netdev_features_t vlano_features;
        netdev_features_t dflt_features;
        netdev_features_t tso_features;

        if (ice_is_safe_mode(pf)) {
                /* safe mode */
                netdev->features = NETIF_F_SG | NETIF_F_HIGHDMA;
                netdev->hw_features = netdev->features;
                return;
        }

        dflt_features = NETIF_F_SG      |
                        NETIF_F_HIGHDMA |
                        NETIF_F_NTUPLE  |
                        NETIF_F_RXHASH;

        csumo_features = NETIF_F_RXCSUM   |
                         NETIF_F_IP_CSUM  |
                         NETIF_F_SCTP_CRC |
                         NETIF_F_IPV6_CSUM;

        vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER |
                         NETIF_F_HW_VLAN_CTAG_TX     |
                         NETIF_F_HW_VLAN_CTAG_RX;

        tso_features = NETIF_F_TSO                      |
                       NETIF_F_TSO_ECN                  |
                       NETIF_F_TSO6                     |
                       NETIF_F_GSO_GRE                  |
                       NETIF_F_GSO_UDP_TUNNEL           |
                       NETIF_F_GSO_GRE_CSUM             |
                       NETIF_F_GSO_UDP_TUNNEL_CSUM      |
                       NETIF_F_GSO_PARTIAL              |
                       NETIF_F_GSO_IPXIP4               |
                       NETIF_F_GSO_IPXIP6               |
                       NETIF_F_GSO_UDP_L4;

        netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM |
                                        NETIF_F_GSO_GRE_CSUM;
        /* set features that user can change */
        netdev->hw_features = dflt_features | csumo_features |
                              vlano_features | tso_features;

        /* add support for HW_CSUM on packets with MPLS header */
        netdev->mpls_features =  NETIF_F_HW_CSUM;

        /* enable features */
        netdev->features |= netdev->hw_features;
        /* encap and VLAN devices inherit default, csumo and tso features */
        netdev->hw_enc_features |= dflt_features | csumo_features |
                                   tso_features;
        netdev->vlan_features |= dflt_features | csumo_features |
                                 tso_features;
}

/**
 * ice_cfg_netdev - Allocate, configure and register a netdev
 * @vsi: the VSI associated with the new netdev
 *
 * Returns 0 on success, negative value on failure
 */
static int ice_cfg_netdev(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_netdev_priv *np;
        struct net_device *netdev;
        u8 mac_addr[ETH_ALEN];

        netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
                                    vsi->alloc_rxq);
        if (!netdev)
                return -ENOMEM;

        set_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
        vsi->netdev = netdev;