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

#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_fltr.h"

/**
 * ice_validate_vf_id - helper to check if VF ID is valid
 * @pf: pointer to the PF structure
 * @vf_id: the ID of the VF to check
 */
static int ice_validate_vf_id(struct ice_pf *pf, u16 vf_id)
{
        /* vf_id range is only valid for 0-255, and should always be unsigned */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(ice_pf_to_dev(pf), "Invalid VF ID: %u\n", vf_id);
                return -EINVAL;
        }
        return 0;
}

/**
 * ice_check_vf_init - helper to check if VF init complete
 * @pf: pointer to the PF structure
 * @vf: the pointer to the VF to check
 */
static int ice_check_vf_init(struct ice_pf *pf, struct ice_vf *vf)
{
        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                dev_err(ice_pf_to_dev(pf), "VF ID: %u in reset. Try again.\n",
                        vf->vf_id);
                return -EBUSY;
        }
        return 0;
}

/**
 * ice_err_to_virt_err - translate errors for VF return code
 * @ice_err: error return code
 */
static enum virtchnl_status_code ice_err_to_virt_err(enum ice_status ice_err)
{
        switch (ice_err) {
        case ICE_SUCCESS:
                return VIRTCHNL_STATUS_SUCCESS;
        case ICE_ERR_BAD_PTR:
        case ICE_ERR_INVAL_SIZE:
        case ICE_ERR_DEVICE_NOT_SUPPORTED:
        case ICE_ERR_PARAM:
        case ICE_ERR_CFG:
                return VIRTCHNL_STATUS_ERR_PARAM;
        case ICE_ERR_NO_MEMORY:
                return VIRTCHNL_STATUS_ERR_NO_MEMORY;
        case ICE_ERR_NOT_READY:
        case ICE_ERR_RESET_FAILED:
        case ICE_ERR_FW_API_VER:
        case ICE_ERR_AQ_ERROR:
        case ICE_ERR_AQ_TIMEOUT:
        case ICE_ERR_AQ_FULL:
        case ICE_ERR_AQ_NO_WORK:
        case ICE_ERR_AQ_EMPTY:
                return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
        default:
                return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
        }
}

/**
 * ice_vc_vf_broadcast - Broadcast a message to all VFs on PF
 * @pf: pointer to the PF structure
 * @v_opcode: operation code
 * @v_retval: return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 */
static void
ice_vc_vf_broadcast(struct ice_pf *pf, enum virtchnl_ops v_opcode,
                    enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
{
        struct ice_hw *hw = &pf->hw;
        unsigned int i;

        ice_for_each_vf(pf, i) {
                struct ice_vf *vf = &pf->vf[i];

                /* Not all vfs are enabled so skip the ones that are not */
                if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
                    !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
                        continue;

                /* Ignore return value on purpose - a given VF may fail, but
                 * we need to keep going and send to all of them
                 */
                ice_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval, msg,
                                      msglen, NULL);
        }
}

/**
 * ice_set_pfe_link - Set the link speed/status of the virtchnl_pf_event
 * @vf: pointer to the VF structure
 * @pfe: pointer to the virtchnl_pf_event to set link speed/status for
 * @ice_link_speed: link speed specified by ICE_AQ_LINK_SPEED_*
 * @link_up: whether or not to set the link up/down
 */
static void
ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
                 int ice_link_speed, bool link_up)
{
        if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
                pfe->event_data.link_event_adv.link_status = link_up;
                /* Speed in Mbps */
                pfe->event_data.link_event_adv.link_speed =
                        ice_conv_link_speed_to_virtchnl(true, ice_link_speed);
        } else {
                pfe->event_data.link_event.link_status = link_up;
                /* Legacy method for virtchnl link speeds */
                pfe->event_data.link_event.link_speed =
                        (enum virtchnl_link_speed)
                        ice_conv_link_speed_to_virtchnl(false, ice_link_speed);
        }
}

/**
 * ice_vf_has_no_qs_ena - check if the VF has any Rx or Tx queues enabled
 * @vf: the VF to check
 *
 * Returns true if the VF has no Rx and no Tx queues enabled and returns false
 * otherwise
 */
static bool ice_vf_has_no_qs_ena(struct ice_vf *vf)
{
        return (!bitmap_weight(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) &&
                !bitmap_weight(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF));
}

/**
 * ice_is_vf_link_up - check if the VF's link is up
 * @vf: VF to check if link is up
 */
static bool ice_is_vf_link_up(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;

        if (ice_check_vf_init(pf, vf))
                return false;

        if (ice_vf_has_no_qs_ena(vf))
                return false;
        else if (vf->link_forced)
                return vf->link_up;
        else
                return pf->hw.port_info->phy.link_info.link_info &
                        ICE_AQ_LINK_UP;
}

/**
 * ice_vc_notify_vf_link_state - Inform a VF of link status
 * @vf: pointer to the VF structure
 *
 * send a link status message to a single VF
 */
static void ice_vc_notify_vf_link_state(struct ice_vf *vf)
{
        struct virtchnl_pf_event pfe = { 0 };
        struct ice_hw *hw = &vf->pf->hw;

        pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
        pfe.severity = PF_EVENT_SEVERITY_INFO;

        if (ice_is_vf_link_up(vf))
                ice_set_pfe_link(vf, &pfe,
                                 hw->port_info->phy.link_info.link_speed, true);
        else
                ice_set_pfe_link(vf, &pfe, ICE_AQ_LINK_SPEED_UNKNOWN, false);

        ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
                              VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
                              sizeof(pfe), NULL);
}

/**
 * ice_vf_invalidate_vsi - invalidate vsi_idx/vsi_num to remove VSI access
 * @vf: VF to remove access to VSI for
 */
static void ice_vf_invalidate_vsi(struct ice_vf *vf)
{
        vf->lan_vsi_idx = ICE_NO_VSI;
        vf->lan_vsi_num = ICE_NO_VSI;
}

/**
 * ice_vf_vsi_release - invalidate the VF's VSI after freeing it
 * @vf: invalidate this VF's VSI after freeing it
 */
static void ice_vf_vsi_release(struct ice_vf *vf)
{
        ice_vsi_release(vf->pf->vsi[vf->lan_vsi_idx]);
        ice_vf_invalidate_vsi(vf);
}

/**
 * ice_free_vf_res - Free a VF's resources
 * @vf: pointer to the VF info
 */
static void ice_free_vf_res(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        int i, last_vector_idx;

        /* First, disable VF's configuration API to prevent OS from
         * accessing the VF's VSI after it's freed or invalidated.
         */
        clear_bit(ICE_VF_STATE_INIT, vf->vf_states);

        /* free VSI and disconnect it from the parent uplink */
        if (vf->lan_vsi_idx != ICE_NO_VSI) {
                ice_vf_vsi_release(vf);
                vf->num_mac = 0;
        }

        last_vector_idx = vf->first_vector_idx + pf->num_msix_per_vf - 1;

        /* clear VF MDD event information */
        memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events));
        memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events));

        /* Disable interrupts so that VF starts in a known state */
        for (i = vf->first_vector_idx; i <= last_vector_idx; i++) {
                wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M);
                ice_flush(&pf->hw);
        }
        /* reset some of the state variables keeping track of the resources */
        clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
        clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
}

/**
 * ice_dis_vf_mappings
 * @vf: pointer to the VF structure
 */
static void ice_dis_vf_mappings(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        struct device *dev;
        int first, last, v;
        struct ice_hw *hw;

        hw = &pf->hw;
        vsi = pf->vsi[vf->lan_vsi_idx];

        dev = ice_pf_to_dev(pf);
        wr32(hw, VPINT_ALLOC(vf->vf_id), 0);
        wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0);

        first = vf->first_vector_idx;
        last = first + pf->num_msix_per_vf - 1;
        for (v = first; v <= last; v++) {
                u32 reg;

                reg = (((1 << GLINT_VECT2FUNC_IS_PF_S) &
                        GLINT_VECT2FUNC_IS_PF_M) |
                       ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
                        GLINT_VECT2FUNC_PF_NUM_M));
                wr32(hw, GLINT_VECT2FUNC(v), reg);
        }

        if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG)
                wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0);
        else
                dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n");

        if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG)
                wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0);
        else
                dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n");
}

/**
 * ice_sriov_free_msix_res - Reset/free any used MSIX resources
 * @pf: pointer to the PF structure
 *
 * Since no MSIX entries are taken from the pf->irq_tracker then just clear
 * the pf->sriov_base_vector.
 *
 * Returns 0 on success, and -EINVAL on error.
 */
static int ice_sriov_free_msix_res(struct ice_pf *pf)
{
        struct ice_res_tracker *res;

        if (!pf)
                return -EINVAL;

        res = pf->irq_tracker;
        if (!res)
                return -EINVAL;

        /* give back irq_tracker resources used */
        WARN_ON(pf->sriov_base_vector < res->num_entries);

        pf->sriov_base_vector = 0;

        return 0;
}

/**
 * ice_set_vf_state_qs_dis - Set VF queues state to disabled
 * @vf: pointer to the VF structure
 */
void ice_set_vf_state_qs_dis(struct ice_vf *vf)
{
        /* Clear Rx/Tx enabled queues flag */
        bitmap_zero(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF);
        bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF);
        clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
}

/**
 * ice_dis_vf_qs - Disable the VF queues
 * @vf: pointer to the VF structure
 */
static void ice_dis_vf_qs(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        vsi = pf->vsi[vf->lan_vsi_idx];

        ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);
        ice_vsi_stop_all_rx_rings(vsi);
        ice_set_vf_state_qs_dis(vf);
}

/**
 * ice_free_vfs - Free all VFs
 * @pf: pointer to the PF structure
 */
void ice_free_vfs(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        unsigned int tmp, i;

        if (!pf->vf)
                return;

        while (test_and_set_bit(__ICE_VF_DIS, pf->state))
                usleep_range(1000, 2000);

        /* Disable IOV before freeing resources. This lets any VF drivers
         * running in the host get themselves cleaned up before we yank
         * the carpet out from underneath their feet.
         */
        if (!pci_vfs_assigned(pf->pdev))
                pci_disable_sriov(pf->pdev);
        else
                dev_warn(dev, "VFs are assigned - not disabling SR-IOV\n");

        /* Avoid wait time by stopping all VFs at the same time */
        ice_for_each_vf(pf, i)
                if (test_bit(ICE_VF_STATE_QS_ENA, pf->vf[i].vf_states))
                        ice_dis_vf_qs(&pf->vf[i]);

        tmp = pf->num_alloc_vfs;
        pf->num_qps_per_vf = 0;
        pf->num_alloc_vfs = 0;
        for (i = 0; i < tmp; i++) {
                if (test_bit(ICE_VF_STATE_INIT, pf->vf[i].vf_states)) {
                        /* disable VF qp mappings and set VF disable state */
                        ice_dis_vf_mappings(&pf->vf[i]);
                        set_bit(ICE_VF_STATE_DIS, pf->vf[i].vf_states);
                        ice_free_vf_res(&pf->vf[i]);
                }
        }

        if (ice_sriov_free_msix_res(pf))
                dev_err(dev, "Failed to free MSIX resources used by SR-IOV\n");

        devm_kfree(dev, pf->vf);
        pf->vf = NULL;

        /* This check is for when the driver is unloaded while VFs are
         * assigned. Setting the number of VFs to 0 through sysfs is caught
         * before this function ever gets called.
         */
        if (!pci_vfs_assigned(pf->pdev)) {
                unsigned int vf_id;

                /* Acknowledge VFLR for all VFs. Without this, VFs will fail to
                 * work correctly when SR-IOV gets re-enabled.
                 */
                for (vf_id = 0; vf_id < tmp; vf_id++) {
                        u32 reg_idx, bit_idx;

                        reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
                        bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
                        wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
                }
        }
        clear_bit(__ICE_VF_DIS, pf->state);
        clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
}

/**
 * ice_trigger_vf_reset - Reset a VF on HW
 * @vf: pointer to the VF structure
 * @is_vflr: true if VFLR was issued, false if not
 * @is_pfr: true if the reset was triggered due to a previous PFR
 *
 * Trigger hardware to start a reset for a particular VF. Expects the caller
 * to wait the proper amount of time to allow hardware to reset the VF before
 * it cleans up and restores VF functionality.
 */
static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr)
{
        struct ice_pf *pf = vf->pf;
        u32 reg, reg_idx, bit_idx;
        unsigned int vf_abs_id, i;
        struct device *dev;
        struct ice_hw *hw;

        dev = ice_pf_to_dev(pf);
        hw = &pf->hw;
        vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;

        /* Inform VF that it is no longer active, as a warning */
        clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);

        /* Disable VF's configuration API during reset. The flag is re-enabled
         * when it's safe again to access VF's VSI.
         */
        clear_bit(ICE_VF_STATE_INIT, vf->vf_states);

        /* VF_MBX_ARQLEN is cleared by PFR, so the driver needs to clear it
         * in the case of VFR. If this is done for PFR, it can mess up VF
         * resets because the VF driver may already have started cleanup
         * by the time we get here.
         */
        if (!is_pfr)
                wr32(hw, VF_MBX_ARQLEN(vf->vf_id), 0);

        /* In the case of a VFLR, the HW has already reset the VF and we
         * just need to clean up, so don't hit the VFRTRIG register.
         */
        if (!is_vflr) {
                /* reset VF using VPGEN_VFRTRIG reg */
                reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
                reg |= VPGEN_VFRTRIG_VFSWR_M;
                wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
        }
        /* clear the VFLR bit in GLGEN_VFLRSTAT */
        reg_idx = (vf_abs_id) / 32;
        bit_idx = (vf_abs_id) % 32;
        wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
        ice_flush(hw);

        wr32(hw, PF_PCI_CIAA,
             VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S));
        for (i = 0; i < ICE_PCI_CIAD_WAIT_COUNT; i++) {
                reg = rd32(hw, PF_PCI_CIAD);
                /* no transactions pending so stop polling */
                if ((reg & VF_TRANS_PENDING_M) == 0)
                        break;

                dev_err(dev, "VF %u PCI transactions stuck\n", vf->vf_id);
                udelay(ICE_PCI_CIAD_WAIT_DELAY_US);
        }
}

/**
 * ice_vsi_manage_pvid - Enable or disable port VLAN for VSI
 * @vsi: the VSI to update
 * @pvid_info: VLAN ID and QoS used to set the PVID VSI context field
 * @enable: true for enable PVID false for disable
 */
static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 pvid_info, bool enable)
{
        struct ice_hw *hw = &vsi->back->hw;
        struct ice_aqc_vsi_props *info;
        struct ice_vsi_ctx *ctxt;
        enum ice_status status;
        int ret = 0;

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

        ctxt->info = vsi->info;
        info = &ctxt->info;
        if (enable) {
                info->vlan_flags = ICE_AQ_VSI_VLAN_MODE_UNTAGGED |
                        ICE_AQ_VSI_PVLAN_INSERT_PVID |
                        ICE_AQ_VSI_VLAN_EMOD_STR;
                info->sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        } else {
                info->vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING |
                        ICE_AQ_VSI_VLAN_MODE_ALL;
                info->sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        }

        info->pvid = cpu_to_le16(pvid_info);
        info->valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
                                           ICE_AQ_VSI_PROP_SW_VALID);

        status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
        if (status) {
                dev_info(ice_hw_to_dev(hw), "update VSI for port VLAN failed, err %s aq_err %s\n",
                         ice_stat_str(status),
                         ice_aq_str(hw->adminq.sq_last_status));
                ret = -EIO;
                goto out;
        }

        vsi->info.vlan_flags = info->vlan_flags;
        vsi->info.sw_flags2 = info->sw_flags2;
        vsi->info.pvid = info->pvid;
out:
        kfree(ctxt);
        return ret;
}

/**
 * ice_vf_get_port_info - Get the VF's port info structure
 * @vf: VF used to get the port info structure for
 */
static struct ice_port_info *ice_vf_get_port_info(struct ice_vf *vf)
{
        return vf->pf->hw.port_info;
}

/**
 * ice_vf_vsi_setup - Set up a VF VSI
 * @vf: VF to setup VSI for
 *
 * Returns pointer to the successfully allocated VSI struct on success,
 * otherwise returns NULL on failure.
 */
static struct ice_vsi *ice_vf_vsi_setup(struct ice_vf *vf)
{
        struct ice_port_info *pi = ice_vf_get_port_info(vf);
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        vsi = ice_vsi_setup(pf, pi, ICE_VSI_VF, vf->vf_id);

        if (!vsi) {
                dev_err(ice_pf_to_dev(pf), "Failed to create VF VSI\n");
                ice_vf_invalidate_vsi(vf);
                return NULL;
        }

        vf->lan_vsi_idx = vsi->idx;
        vf->lan_vsi_num = vsi->vsi_num;

        return vsi;
}

/**
 * ice_calc_vf_first_vector_idx - Calculate MSIX vector index in the PF space
 * @pf: pointer to PF structure
 * @vf: pointer to VF that the first MSIX vector index is being calculated for
 *
 * This returns the first MSIX vector index in PF space that is used by this VF.
 * This index is used when accessing PF relative registers such as
 * GLINT_VECT2FUNC and GLINT_DYN_CTL.
 * This will always be the OICR index in the AVF driver so any functionality
 * using vf->first_vector_idx for queue configuration will have to increment by
 * 1 to avoid meddling with the OICR index.
 */
static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf)
{
        return pf->sriov_base_vector + vf->vf_id * pf->num_msix_per_vf;
}

/**
 * ice_vf_rebuild_host_vlan_cfg - add VLAN 0 filter or rebuild the Port VLAN
 * @vf: VF to add MAC filters for
 *
 * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver
 * always re-adds either a VLAN 0 or port VLAN based filter after reset.
 */
static int ice_vf_rebuild_host_vlan_cfg(struct ice_vf *vf)
{
        struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
        struct device *dev = ice_pf_to_dev(vf->pf);
        u16 vlan_id = 0;
        int err;

        if (vf->port_vlan_info) {
                err = ice_vsi_manage_pvid(vsi, vf->port_vlan_info, true);
                if (err) {
                        dev_err(dev, "failed to configure port VLAN via VSI parameters for VF %u, error %d\n",
                                vf->vf_id, err);
                        return err;
                }

                vlan_id = vf->port_vlan_info & VLAN_VID_MASK;
        }

        /* vlan_id will either be 0 or the port VLAN number */
        err = ice_vsi_add_vlan(vsi, vlan_id, ICE_FWD_TO_VSI);
        if (err) {
                dev_err(dev, "failed to add %s VLAN %u filter for VF %u, error %d\n",
                        vf->port_vlan_info ? "port" : "", vlan_id, vf->vf_id,
                        err);
                return err;
        }

        return 0;
}

/**
 * ice_vf_rebuild_host_mac_cfg - add broadcast and the VF's perm_addr/LAA
 * @vf: VF to add MAC filters for
 *
 * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver
 * always re-adds a broadcast filter and the VF's perm_addr/LAA after reset.
 */
static int ice_vf_rebuild_host_mac_cfg(struct ice_vf *vf)
{
        struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
        struct device *dev = ice_pf_to_dev(vf->pf);
        enum ice_status status;
        u8 broadcast[ETH_ALEN];

        eth_broadcast_addr(broadcast);
        status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI);
        if (status) {
                dev_err(dev, "failed to add broadcast MAC filter for VF %u, error %s\n",
                        vf->vf_id, ice_stat_str(status));
                return ice_status_to_errno(status);
        }

        vf->num_mac++;

        if (is_valid_ether_addr(vf->dflt_lan_addr.addr)) {
                status = ice_fltr_add_mac(vsi, vf->dflt_lan_addr.addr,
                                          ICE_FWD_TO_VSI);
                if (status) {
                        dev_err(dev, "failed to add default unicast MAC filter %pM for VF %u, error %s\n",
                                &vf->dflt_lan_addr.addr[0], vf->vf_id,
                                ice_stat_str(status));
                        return ice_status_to_errno(status);
                }
                vf->num_mac++;
        }

        return 0;
}

/**
 * ice_vf_set_host_trust_cfg - set trust setting based on pre-reset value
 * @vf: VF to configure trust setting for
 */
static void ice_vf_set_host_trust_cfg(struct ice_vf *vf)
{
        if (vf->trusted)
                set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
        else
                clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
}

/**
 * ice_ena_vf_msix_mappings - enable VF MSIX mappings in hardware
 * @vf: VF to enable MSIX mappings for
 *
 * Some of the registers need to be indexed/configured using hardware global
 * device values and other registers need 0-based values, which represent PF
 * based values.
 */
static void ice_ena_vf_msix_mappings(struct ice_vf *vf)
{
        int device_based_first_msix, device_based_last_msix;
        int pf_based_first_msix, pf_based_last_msix, v;
        struct ice_pf *pf = vf->pf;
        int device_based_vf_id;
        struct ice_hw *hw;
        u32 reg;

        hw = &pf->hw;
        pf_based_first_msix = vf->first_vector_idx;
        pf_based_last_msix = (pf_based_first_msix + pf->num_msix_per_vf) - 1;

        device_based_first_msix = pf_based_first_msix +
                pf->hw.func_caps.common_cap.msix_vector_first_id;
        device_based_last_msix =
                (device_based_first_msix + pf->num_msix_per_vf) - 1;
        device_based_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

        reg = (((device_based_first_msix << VPINT_ALLOC_FIRST_S) &
                VPINT_ALLOC_FIRST_M) |
               ((device_based_last_msix << VPINT_ALLOC_LAST_S) &
                VPINT_ALLOC_LAST_M) | VPINT_ALLOC_VALID_M);
        wr32(hw, VPINT_ALLOC(vf->vf_id), reg);

        reg = (((device_based_first_msix << VPINT_ALLOC_PCI_FIRST_S)
                 & VPINT_ALLOC_PCI_FIRST_M) |
               ((device_based_last_msix << VPINT_ALLOC_PCI_LAST_S) &
                VPINT_ALLOC_PCI_LAST_M) | VPINT_ALLOC_PCI_VALID_M);
        wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg);

        /* map the interrupts to its functions */
        for (v = pf_based_first_msix; v <= pf_based_last_msix; v++) {
                reg = (((device_based_vf_id << GLINT_VECT2FUNC_VF_NUM_S) &
                        GLINT_VECT2FUNC_VF_NUM_M) |
                       ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
                        GLINT_VECT2FUNC_PF_NUM_M));
                wr32(hw, GLINT_VECT2FUNC(v), reg);
        }

        /* Map mailbox interrupt to VF MSI-X vector 0 */
        wr32(hw, VPINT_MBX_CTL(device_based_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M);
}

/**
 * ice_ena_vf_q_mappings - enable Rx/Tx queue mappings for a VF
 * @vf: VF to enable the mappings for
 * @max_txq: max Tx queues allowed on the VF's VSI
 * @max_rxq: max Rx queues allowed on the VF's VSI
 */
static void ice_ena_vf_q_mappings(struct ice_vf *vf, u16 max_txq, u16 max_rxq)
{
        struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
        struct device *dev = ice_pf_to_dev(vf->pf);
        struct ice_hw *hw = &vf->pf->hw;
        u32 reg;

        /* set regardless of mapping mode */
        wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M);

        /* VF Tx queues allocation */
        if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) {
                /* set the VF PF Tx queue range
                 * VFNUMQ value should be set to (number of queues - 1). A value
                 * of 0 means 1 queue and a value of 255 means 256 queues
                 */
                reg = (((vsi->txq_map[0] << VPLAN_TX_QBASE_VFFIRSTQ_S) &
                        VPLAN_TX_QBASE_VFFIRSTQ_M) |
                       (((max_txq - 1) << VPLAN_TX_QBASE_VFNUMQ_S) &
                        VPLAN_TX_QBASE_VFNUMQ_M));
                wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg);
        } else {
                dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n");
        }

        /* set regardless of mapping mode */
        wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M);

        /* VF Rx queues allocation */
        if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) {
                /* set the VF PF Rx queue range
                 * VFNUMQ value should be set to (number of queues - 1). A value
                 * of 0 means 1 queue and a value of 255 means 256 queues
                 */
                reg = (((vsi->rxq_map[0] << VPLAN_RX_QBASE_VFFIRSTQ_S) &
                        VPLAN_RX_QBASE_VFFIRSTQ_M) |
                       (((max_rxq - 1) << VPLAN_RX_QBASE_VFNUMQ_S) &
                        VPLAN_RX_QBASE_VFNUMQ_M));
                wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg);
        } else {
                dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n");
        }
}

/**
 * ice_ena_vf_mappings - enable VF MSIX and queue mapping
 * @vf: pointer to the VF structure
 */
static void ice_ena_vf_mappings(struct ice_vf *vf)
{
        struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];

        ice_ena_vf_msix_mappings(vf);
        ice_ena_vf_q_mappings(vf, vsi->alloc_txq, vsi->alloc_rxq);
}

/**
 * ice_determine_res
 * @pf: pointer to the PF structure
 * @avail_res: available resources in the PF structure
 * @max_res: maximum resources that can be given per VF
 * @min_res: minimum resources that can be given per VF
 *
 * Returns non-zero value if resources (queues/vectors) are available or
 * returns zero if PF cannot accommodate for all num_alloc_vfs.
 */
static int
ice_determine_res(struct ice_pf *pf, u16 avail_res, u16 max_res, u16 min_res)
{
        bool checked_min_res = false;
        int res;

        /* start by checking if PF can assign max number of resources for
         * all num_alloc_vfs.
         * if yes, return number per VF
         * If no, divide by 2 and roundup, check again
         * repeat the loop till we reach a point where even minimum resources
         * are not available, in that case return 0
         */
        res = max_res;
        while ((res >= min_res) && !checked_min_res) {
                int num_all_res;

                num_all_res = pf->num_alloc_vfs * res;
                if (num_all_res <= avail_res)
                        return res;

                if (res == min_res)
                        checked_min_res = true;

                res = DIV_ROUND_UP(res, 2);
        }
        return 0;
}

/**
 * ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space
 * @vf: VF to calculate the register index for
 * @q_vector: a q_vector associated to the VF
 */
int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector)
{
        struct ice_pf *pf;

        if (!vf || !q_vector)
                return -EINVAL;

        pf = vf->pf;

        /* always add one to account for the OICR being the first MSIX */
        return pf->sriov_base_vector + pf->num_msix_per_vf * vf->vf_id +
                q_vector->v_idx + 1;
}

/**
 * ice_get_max_valid_res_idx - Get the max valid resource index
 * @res: pointer to the resource to find the max valid index for
 *
 * Start from the end of the ice_res_tracker and return right when we find the
 * first res->list entry with the ICE_RES_VALID_BIT set. This function is only
 * valid for SR-IOV because it is the only consumer that manipulates the
 * res->end and this is always called when res->end is set to res->num_entries.
 */
static int ice_get_max_valid_res_idx(struct ice_res_tracker *res)
{
        int i;

        if (!res)
                return -EINVAL;

        for (i = res->num_entries - 1; i >= 0; i--)
                if (res->list[i] & ICE_RES_VALID_BIT)
                        return i;

        return 0;
}

/**
 * ice_sriov_set_msix_res - Set any used MSIX resources
 * @pf: pointer to PF structure
 * @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs
 *
 * This function allows SR-IOV resources to be taken from the end of the PF's
 * allowed HW MSIX vectors so that the irq_tracker will not be affected. We
 * just set the pf->sriov_base_vector and return success.
 *
 * If there are not enough resources available, return an error. This should
 * always be caught by ice_set_per_vf_res().
 *
 * Return 0 on success, and -EINVAL when there are not enough MSIX vectors in
 * in the PF's space available for SR-IOV.
 */
static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed)
{
        u16 total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors;
        int vectors_used = pf->irq_tracker->num_entries;
        int sriov_base_vector;

        sriov_base_vector = total_vectors - num_msix_needed;

        /* make sure we only grab irq_tracker entries from the list end and
         * that we have enough available MSIX vectors
         */
        if (sriov_base_vector < vectors_used)
                return -EINVAL;

        pf->sriov_base_vector = sriov_base_vector;

        return 0;
}

/**
 * ice_set_per_vf_res - check if vectors and queues are available
 * @pf: pointer to the PF structure
 *
 * First, determine HW interrupts from common pool. If we allocate fewer VFs, we
 * get more vectors and can enable more queues per VF. Note that this does not
 * grab any vectors from the SW pool already allocated. Also note, that all
 * vector counts include one for each VF's miscellaneous interrupt vector
 * (i.e. OICR).
 *
 * Minimum VFs - 2 vectors, 1 queue pair
 * Small VFs - 5 vectors, 4 queue pairs
 * Medium VFs - 17 vectors, 16 queue pairs
 *
 * Second, determine number of queue pairs per VF by starting with a pre-defined
 * maximum each VF supports. If this is not possible, then we adjust based on
 * queue pairs available on the device.
 *
 * Lastly, set queue and MSI-X VF variables tracked by the PF so it can be used
 * by each VF during VF initialization and reset.
 */
static int ice_set_per_vf_res(struct ice_pf *pf)
{
        int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
        int msix_avail_per_vf, msix_avail_for_sriov;
        struct device *dev = ice_pf_to_dev(pf);
        u16 num_msix_per_vf, num_txq, num_rxq;

        if (!pf->num_alloc_vfs || max_valid_res_idx < 0)
                return -EINVAL;

        /* determine MSI-X resources per VF */
        msix_avail_for_sriov = pf->hw.func_caps.common_cap.num_msix_vectors -
                pf->irq_tracker->num_entries;
        msix_avail_per_vf = msix_avail_for_sriov / pf->num_alloc_vfs;
        if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MED) {
                num_msix_per_vf = ICE_NUM_VF_MSIX_MED;
        } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_SMALL) {
                num_msix_per_vf = ICE_NUM_VF_MSIX_SMALL;
        } else if (msix_avail_per_vf >= ICE_MIN_INTR_PER_VF) {
                num_msix_per_vf = ICE_MIN_INTR_PER_VF;
        } else {
                dev_err(dev, "Only %d MSI-X interrupts available for SR-IOV. Not enough to support minimum of %d MSI-X interrupts per VF for %d VFs\n",
                        msix_avail_for_sriov, ICE_MIN_INTR_PER_VF,
                        pf->num_alloc_vfs);
                return -EIO;
        }

        /* determine queue resources per VF */
        num_txq = ice_determine_res(pf, ice_get_avail_txq_count(pf),
                                    min_t(u16,
                                          num_msix_per_vf - ICE_NONQ_VECS_VF,
                                          ICE_MAX_RSS_QS_PER_VF),
                                    ICE_MIN_QS_PER_VF);

        num_rxq = ice_determine_res(pf, ice_get_avail_rxq_count(pf),
                                    min_t(u16,
                                          num_msix_per_vf - ICE_NONQ_VECS_VF,
                                          ICE_MAX_RSS_QS_PER_VF),
                                    ICE_MIN_QS_PER_VF);

        if (!num_txq || !num_rxq) {
                dev_err(dev, "Not enough queues to support minimum of %d queue pairs per VF for %d VFs\n",
                        ICE_MIN_QS_PER_VF, pf->num_alloc_vfs);
                return -EIO;
        }

        if (ice_sriov_set_msix_res(pf, num_msix_per_vf * pf->num_alloc_vfs)) {
                dev_err(dev, "Unable to set MSI-X resources for %d VFs\n",
                        pf->num_alloc_vfs);
                return -EINVAL;
        }

        /* only allow equal Tx/Rx queue count (i.e. queue pairs) */
        pf->num_qps_per_vf = min_t(int, num_txq, num_rxq);
        pf->num_msix_per_vf = num_msix_per_vf;
        dev_info(dev, "Enabling %d VFs with %d vectors and %d queues per VF\n",
                 pf->num_alloc_vfs, pf->num_msix_per_vf, pf->num_qps_per_vf);

        return 0;
}

/**
 * ice_clear_vf_reset_trigger - enable VF to access hardware
 * @vf: VF to enabled hardware access for
 */
static void ice_clear_vf_reset_trigger(struct ice_vf *vf)
{
        struct ice_hw *hw = &vf->pf->hw;
        u32 reg;

        reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
        reg &= ~VPGEN_VFRTRIG_VFSWR_M;
        wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
        ice_flush(hw);
}

/**
 * ice_vf_set_vsi_promisc - set given VF VSI to given promiscuous mode(s)
 * @vf: pointer to the VF info
 * @vsi: the VSI being configured
 * @promisc_m: mask of promiscuous config bits
 * @rm_promisc: promisc flag request from the VF to remove or add filter
 *
 * This function configures VF VSI promiscuous mode, based on the VF requests,

 * for Unicast, Multicast and VLAN
 */
static enum ice_status
ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m,
                       bool rm_promisc)
{
        struct ice_pf *pf = vf->pf;
        enum ice_status status = 0;
        struct ice_hw *hw;

        hw = &pf->hw;
        if (vsi->num_vlan) {
                status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
                                                  rm_promisc);
        } else if (vf->port_vlan_info) {
                if (rm_promisc)
                        status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
                                                       vf->port_vlan_info);
                else
                        status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
                                                     vf->port_vlan_info);
        } else {
                if (rm_promisc)
                        status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
                                                       0);
                else
                        status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
                                                     0);
        }

        return status;
}

static void ice_vf_clear_counters(struct ice_vf *vf)
{
        struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];

        vf->num_mac = 0;
        vsi->num_vlan = 0;
        memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events));
        memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events));
}

/**
 * ice_vf_pre_vsi_rebuild - tasks to be done prior to VSI rebuild
 * @vf: VF to perform pre VSI rebuild tasks
 *
 * These tasks are items that don't need to be amortized since they are most
 * likely called in a for loop with all VF(s) in the reset_all_vfs() case.
 */
static void ice_vf_pre_vsi_rebuild(struct ice_vf *vf)
{
        ice_vf_clear_counters(vf);
        ice_clear_vf_reset_trigger(vf);
}

/**
 * ice_vf_rebuild_host_cfg - host admin configuration is persistent across reset
 * @vf: VF to rebuild host configuration on
 */
static void ice_vf_rebuild_host_cfg(struct ice_vf *vf)
{
        struct device *dev = ice_pf_to_dev(vf->pf);

        ice_vf_set_host_trust_cfg(vf);

        if (ice_vf_rebuild_host_mac_cfg(vf))
                dev_err(dev, "failed to rebuild default MAC configuration for VF %d\n",
                        vf->vf_id);

        if (ice_vf_rebuild_host_vlan_cfg(vf))
                dev_err(dev, "failed to rebuild VLAN configuration for VF %u\n",
                        vf->vf_id);
}

/**
 * ice_vf_rebuild_vsi_with_release - release and setup the VF's VSI
 * @vf: VF to release and setup the VSI for
 *
 * This is only called when a single VF is being reset (i.e. VFR, VFLR, host VF
 * configuration change, etc.).
 */
static int ice_vf_rebuild_vsi_with_release(struct ice_vf *vf)
{
        ice_vf_vsi_release(vf);
        if (!ice_vf_vsi_setup(vf))
                return -ENOMEM;

        return 0;
}

/**
 * ice_vf_rebuild_vsi - rebuild the VF's VSI
 * @vf: VF to rebuild the VSI for
 *
 * This is only called when all VF(s) are being reset (i.e. PCIe Reset on the
 * host, PFR, CORER, etc.).
 */
static int ice_vf_rebuild_vsi(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        vsi = pf->vsi[vf->lan_vsi_idx];

        if (ice_vsi_rebuild(vsi, true)) {
                dev_err(ice_pf_to_dev(pf), "failed to rebuild VF %d VSI\n",
                        vf->vf_id);
                return -EIO;
        }
        /* vsi->idx will remain the same in this case so don't update
         * vf->lan_vsi_idx
         */
        vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);
        vf->lan_vsi_num = vsi->vsi_num;

        return 0;
}

/**
 * ice_vf_set_initialized - VF is ready for VIRTCHNL communication
 * @vf: VF to set in initialized state
 *
 * After this function the VF will be ready to receive/handle the
 * VIRTCHNL_OP_GET_VF_RESOURCES message
 */
static void ice_vf_set_initialized(struct ice_vf *vf)
{
        ice_set_vf_state_qs_dis(vf);
        clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
        clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
        clear_bit(ICE_VF_STATE_DIS, vf->vf_states);
        set_bit(ICE_VF_STATE_INIT, vf->vf_states);
}

/**
 * ice_vf_post_vsi_rebuild - tasks to do after the VF's VSI have been rebuilt
 * @vf: VF to perform tasks on
 */
static void ice_vf_post_vsi_rebuild(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_hw *hw;

        hw = &pf->hw;

        ice_vf_rebuild_host_cfg(vf);

        ice_vf_set_initialized(vf);
        ice_ena_vf_mappings(vf);
        wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
}

/**
 * ice_reset_all_vfs - reset all allocated VFs in one go
 * @pf: pointer to the PF structure
 * @is_vflr: true if VFLR was issued, false if not
 *
 * First, tell the hardware to reset each VF, then do all the waiting in one
 * chunk, and finally finish restoring each VF after the wait. This is useful
 * during PF routines which need to reset all VFs, as otherwise it must perform
 * these resets in a serialized fashion.
 *
 * Returns true if any VFs were reset, and false otherwise.
 */
bool ice_reset_all_vfs(struct ice_pf *pf, bool is_vflr)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        struct ice_vf *vf;
        int v, i;

        /* If we don't have any VFs, then there is nothing to reset */
        if (!pf->num_alloc_vfs)
                return false;

        /* If VFs have been disabled, there is no need to reset */
        if (test_and_set_bit(__ICE_VF_DIS, pf->state))
                return false;

        /* Begin reset on all VFs at once */
        ice_for_each_vf(pf, v)
                ice_trigger_vf_reset(&pf->vf[v], is_vflr, true);

        /* HW requires some time to make sure it can flush the FIFO for a VF
         * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
         * sequence to make sure that it has completed. We'll keep track of
         * the VFs using a simple iterator that increments once that VF has
         * finished resetting.
         */
        for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
                /* Check each VF in sequence */
                while (v < pf->num_alloc_vfs) {
                        u32 reg;

                        vf = &pf->vf[v];
                        reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
                        if (!(reg & VPGEN_VFRSTAT_VFRD_M)) {
                                /* only delay if the check failed */
                                usleep_range(10, 20);
                                break;
                        }

                        /* If the current VF has finished resetting, move on
                         * to the next VF in sequence.
                         */
                        v++;
                }
        }

        /* Display a warning if at least one VF didn't manage to reset in
         * time, but continue on with the operation.
         */
        if (v < pf->num_alloc_vfs)
                dev_warn(dev, "VF reset check timeout\n");

        /* free VF resources to begin resetting the VSI state */
        ice_for_each_vf(pf, v) {
                vf = &pf->vf[v];

                ice_vf_pre_vsi_rebuild(vf);
                ice_vf_rebuild_vsi(vf);
                ice_vf_post_vsi_rebuild(vf);
        }

        ice_flush(hw);
        clear_bit(__ICE_VF_DIS, pf->state);

        return true;
}

/**
 * ice_is_vf_disabled
 * @vf: pointer to the VF info
 *
 * Returns true if the PF or VF is disabled, false otherwise.
 */
static bool ice_is_vf_disabled(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;

        /* If the PF has been disabled, there is no need resetting VF until
         * PF is active again. Similarly, if the VF has been disabled, this
         * means something else is resetting the VF, so we shouldn't continue.
         * Otherwise, set disable VF state bit for actual reset, and continue.
         */
        return (test_bit(__ICE_VF_DIS, pf->state) ||
                test_bit(ICE_VF_STATE_DIS, vf->vf_states));
}

/**
 * ice_reset_vf - Reset a particular VF
 * @vf: pointer to the VF structure
 * @is_vflr: true if VFLR was issued, false if not
 *
 * Returns true if the VF is currently in reset, resets successfully, or resets
 * are disabled and false otherwise.
 */
bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        struct device *dev;
        struct ice_hw *hw;
        bool rsd = false;
        u8 promisc_m;
        u32 reg;
        int i;

        dev = ice_pf_to_dev(pf);

        if (test_bit(__ICE_VF_RESETS_DISABLED, pf->state)) {
                dev_dbg(dev, "Trying to reset VF %d, but all VF resets are disabled\n",
                        vf->vf_id);
                return true;
        }

        if (ice_is_vf_disabled(vf)) {
                dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n",
                        vf->vf_id);
                return true;
        }

        /* Set VF disable bit state here, before triggering reset */
        set_bit(ICE_VF_STATE_DIS, vf->vf_states);
        ice_trigger_vf_reset(vf, is_vflr, false);

        vsi = pf->vsi[vf->lan_vsi_idx];

        if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
                ice_dis_vf_qs(vf);

        /* Call Disable LAN Tx queue AQ whether or not queues are
         * enabled. This is needed for successful completion of VFR.
         */
        ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
                        NULL, ICE_VF_RESET, vf->vf_id, NULL);

        hw = &pf->hw;
        /* poll VPGEN_VFRSTAT reg to make sure
         * that reset is complete
         */
        for (i = 0; i < 10; i++) {
                /* VF reset requires driver to first reset the VF and then
                 * poll the status register to make sure that the reset
                 * completed successfully.
                 */
                reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
                if (reg & VPGEN_VFRSTAT_VFRD_M) {
                        rsd = true;
                        break;
                }

                /* only sleep if the reset is not done */
                usleep_range(10, 20);
        }

        /* Display a warning if VF didn't manage to reset in time, but need to
         * continue on with the operation.
         */
        if (!rsd)
                dev_warn(dev, "VF reset check timeout on VF %d\n", vf->vf_id);

        /* disable promiscuous modes in case they were enabled
         * ignore any error if disabling process failed
         */
        if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
            test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) {
                if (vf->port_vlan_info || vsi->num_vlan)
                        promisc_m = ICE_UCAST_VLAN_PROMISC_BITS;
                else
                        promisc_m = ICE_UCAST_PROMISC_BITS;

                vsi = pf->vsi[vf->lan_vsi_idx];
                if (ice_vf_set_vsi_promisc(vf, vsi, promisc_m, true))
                        dev_err(dev, "disabling promiscuous mode failed\n");
        }

        ice_vf_pre_vsi_rebuild(vf);
        ice_vf_rebuild_vsi_with_release(vf);
        ice_vf_post_vsi_rebuild(vf);

        return true;
}

/**
 * ice_vc_notify_link_state - Inform all VFs on a PF of link status
 * @pf: pointer to the PF structure
 */
void ice_vc_notify_link_state(struct ice_pf *pf)
{
        int i;

        ice_for_each_vf(pf, i)
                ice_vc_notify_vf_link_state(&pf->vf[i]);
}

/**
 * ice_vc_notify_reset - Send pending reset message to all VFs
 * @pf: pointer to the PF structure
 *
 * indicate a pending reset to all VFs on a given PF
 */
void ice_vc_notify_reset(struct ice_pf *pf)
{
        struct virtchnl_pf_event pfe;

        if (!pf->num_alloc_vfs)
                return;

        pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
        ice_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, VIRTCHNL_STATUS_SUCCESS,
                            (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
}

/**
 * ice_vc_notify_vf_reset - Notify VF of a reset event
 * @vf: pointer to the VF structure
 */
static void ice_vc_notify_vf_reset(struct ice_vf *vf)
{
        struct virtchnl_pf_event pfe;
        struct ice_pf *pf;

        if (!vf)
                return;

        pf = vf->pf;
        if (ice_validate_vf_id(pf, vf->vf_id))
                return;

        /* Bail out if VF is in disabled state, neither initialized, nor active
         * state - otherwise proceed with notifications
         */
        if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
             !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
            test_bit(ICE_VF_STATE_DIS, vf->vf_states))
                return;

        pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
        ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
                              VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
                              NULL);
}

/**
 * ice_init_vf_vsi_res - initialize/setup VF VSI resources
 * @vf: VF to initialize/setup the VSI for
 *
 * This function creates a VSI for the VF, adds a VLAN 0 filter, and sets up the
 * VF VSI's broadcast filter and is only used during initial VF creation.
 */
static int ice_init_vf_vsi_res(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        u8 broadcast[ETH_ALEN];
        enum ice_status status;
        struct ice_vsi *vsi;
        struct device *dev;
        int err;

        vf->first_vector_idx = ice_calc_vf_first_vector_idx(pf, vf);

        dev = ice_pf_to_dev(pf);
        vsi = ice_vf_vsi_setup(vf);
        if (!vsi)
                return -ENOMEM;

        err = ice_vsi_add_vlan(vsi, 0, ICE_FWD_TO_VSI);
        if (err) {
                dev_warn(dev, "Failed to add VLAN 0 filter for VF %d\n",
                         vf->vf_id);
                goto release_vsi;
        }

        eth_broadcast_addr(broadcast);
        status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI);
        if (status) {
                dev_err(dev, "Failed to add broadcast MAC filter for VF %d, status %s\n",
                        vf->vf_id, ice_stat_str(status));
                err = ice_status_to_errno(status);
                goto release_vsi;
        }

        vf->num_mac = 1;

        return 0;

release_vsi:
        ice_vf_vsi_release(vf);
        return err;
}

/**
 * ice_start_vfs - start VFs so they are ready to be used by SR-IOV
 * @pf: PF the VFs are associated with
 */
static int ice_start_vfs(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        int retval, i;

        ice_for_each_vf(pf, i) {
                struct ice_vf *vf = &pf->vf[i];

                ice_clear_vf_reset_trigger(vf);

                retval = ice_init_vf_vsi_res(vf);
                if (retval) {
                        dev_err(ice_pf_to_dev(pf), "Failed to initialize VSI resources for VF %d, error %d\n",
                                vf->vf_id, retval);
                        goto teardown;
                }

                set_bit(ICE_VF_STATE_INIT, vf->vf_states);
                ice_ena_vf_mappings(vf);
                wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
        }

        ice_flush(hw);
        return 0;

teardown:
        for (i = i - 1; i >= 0; i--) {
                struct ice_vf *vf = &pf->vf[i];

                ice_dis_vf_mappings(vf);
                ice_vf_vsi_release(vf);
        }

        return retval;
}

/**
 * ice_set_dflt_settings - set VF defaults during initialization/creation
 * @pf: PF holding reference to all VFs for default configuration
 */
static void ice_set_dflt_settings_vfs(struct ice_pf *pf)
{
        int i;

        ice_for_each_vf(pf, i) {
                struct ice_vf *vf = &pf->vf[i];

                vf->pf = pf;
                vf->vf_id = i;
                vf->vf_sw_id = pf->first_sw;
                /* assign default capabilities */
                set_bit(ICE_VIRTCHNL_VF_CAP_L2, &vf->vf_caps);
                vf->spoofchk = true;
                vf->num_vf_qs = pf->num_qps_per_vf;
        }
}

/**
 * ice_alloc_vfs - allocate num_vfs in the PF structure
 * @pf: PF to store the allocated VFs in
 * @num_vfs: number of VFs to allocate
 */
static int ice_alloc_vfs(struct ice_pf *pf, int num_vfs)
{
        struct ice_vf *vfs;

        vfs = devm_kcalloc(ice_pf_to_dev(pf), num_vfs, sizeof(*vfs),
                           GFP_KERNEL);
        if (!vfs)
                return -ENOMEM;

        pf->vf = vfs;
        pf->num_alloc_vfs = num_vfs;

        return 0;
}

/**
 * ice_ena_vfs - enable VFs so they are ready to be used
 * @pf: pointer to the PF structure
 * @num_vfs: number of VFs to enable
 */
static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        int ret;

        /* Disable global interrupt 0 so we don't try to handle the VFLR. */
        wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
             ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);
        set_bit(__ICE_OICR_INTR_DIS, pf->state);
        ice_flush(hw);

        ret = pci_enable_sriov(pf->pdev, num_vfs);
        if (ret) {
                pf->num_alloc_vfs = 0;
                goto err_unroll_intr;
        }

        ret = ice_alloc_vfs(pf, num_vfs);
        if (ret)
                goto err_pci_disable_sriov;

        if (ice_set_per_vf_res(pf)) {
                dev_err(dev, "Not enough resources for %d VFs, try with fewer number of VFs\n",
                        num_vfs);
                ret = -ENOSPC;
                goto err_unroll_sriov;
        }

        ice_set_dflt_settings_vfs(pf);

        if (ice_start_vfs(pf)) {
                dev_err(dev, "Failed to start VF(s)\n");
                ret = -EAGAIN;
                goto err_unroll_sriov;
        }

        clear_bit(__ICE_VF_DIS, pf->state);
        return 0;

err_unroll_sriov:
        devm_kfree(dev, pf->vf);
        pf->vf = NULL;
        pf->num_alloc_vfs = 0;
err_pci_disable_sriov:
        pci_disable_sriov(pf->pdev);
err_unroll_intr:
        /* rearm interrupts here */
        ice_irq_dynamic_ena(hw, NULL, NULL);
        clear_bit(__ICE_OICR_INTR_DIS, pf->state);
        return ret;
}

/**
 * ice_pf_state_is_nominal - checks the PF for nominal state
 * @pf: pointer to PF to check
 *
 * Check the PF's state for a collection of bits that would indicate
 * the PF is in a state that would inhibit normal operation for
 * driver functionality.
 *
 * Returns true if PF is in a nominal state.
 * Returns false otherwise
 */
static bool ice_pf_state_is_nominal(struct ice_pf *pf)
{
        DECLARE_BITMAP(check_bits, __ICE_STATE_NBITS) = { 0 };

        if (!pf)
                return false;

        bitmap_set(check_bits, 0, __ICE_STATE_NOMINAL_CHECK_BITS);
        if (bitmap_intersects(pf->state, check_bits, __ICE_STATE_NBITS))
                return false;

        return true;
}

/**
 * ice_pci_sriov_ena - Enable or change number of VFs
 * @pf: pointer to the PF structure
 * @num_vfs: number of VFs to allocate
 *
 * Returns 0 on success and negative on failure
 */
static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs)
{
        int pre_existing_vfs = pci_num_vf(pf->pdev);
        struct device *dev = ice_pf_to_dev(pf);
        int err;

        if (pre_existing_vfs && pre_existing_vfs != num_vfs)
                ice_free_vfs(pf);
        else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
                return 0;

        if (num_vfs > pf->num_vfs_supported) {
                dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n",
                        num_vfs, pf->num_vfs_supported);
                return -EOPNOTSUPP;
        }

        dev_info(dev, "Enabling %d VFs\n", num_vfs);
        err = ice_ena_vfs(pf, num_vfs);
        if (err) {
                dev_err(dev, "Failed to enable SR-IOV: %d\n", err);
                return err;
        }

        set_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
        return 0;
}

/**
 * ice_check_sriov_allowed - check if SR-IOV is allowed based on various checks
 * @pf: PF to enabled SR-IOV on
 */
static int ice_check_sriov_allowed(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);

        if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) {
                dev_err(dev, "This device is not capable of SR-IOV\n");
                return -EOPNOTSUPP;
        }

        if (ice_is_safe_mode(pf)) {
                dev_err(dev, "SR-IOV cannot be configured - Device is in Safe Mode\n");
                return -EOPNOTSUPP;
        }

        if (!ice_pf_state_is_nominal(pf)) {
                dev_err(dev, "Cannot enable SR-IOV, device not ready\n");
                return -EBUSY;
        }

        return 0;
}

/**
 * ice_sriov_configure - Enable or change number of VFs via sysfs
 * @pdev: pointer to a pci_dev structure
 * @num_vfs: number of VFs to allocate or 0 to free VFs
 *
 * This function is called when the user updates the number of VFs in sysfs. On
 * success return whatever num_vfs was set to by the caller. Return negative on
 * failure.
 */
int ice_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
        struct ice_pf *pf = pci_get_drvdata(pdev);
        struct device *dev = ice_pf_to_dev(pf);
        int err;

        err = ice_check_sriov_allowed(pf);
        if (err)
                return err;

        if (!num_vfs) {
                if (!pci_vfs_assigned(pdev)) {
                        ice_free_vfs(pf);
                        return 0;
                }

                dev_err(dev, "can't free VFs because some are assigned to VMs.\n");
                return -EBUSY;
        }

        err = ice_pci_sriov_ena(pf, num_vfs);
        if (err)
                return err;

        return num_vfs;
}

/**
 * ice_process_vflr_event - Free VF resources via IRQ calls
 * @pf: pointer to the PF structure
 *
 * called from the VFLR IRQ handler to
 * free up VF resources and state variables
 */
void ice_process_vflr_event(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        unsigned int vf_id;
        u32 reg;

        if (!test_and_clear_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
            !pf->num_alloc_vfs)
                return;

        ice_for_each_vf(pf, vf_id) {
                struct ice_vf *vf = &pf->vf[vf_id];
                u32 reg_idx, bit_idx;

                reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
                bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
                /* read GLGEN_VFLRSTAT register to find out the flr VFs */
                reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx));
                if (reg & BIT(bit_idx))
                        /* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */
                        ice_reset_vf(vf, true);
        }
}

/**
 * ice_vc_reset_vf - Perform software reset on the VF after informing the AVF
 * @vf: pointer to the VF info
 */
static void ice_vc_reset_vf(struct ice_vf *vf)
{
        ice_vc_notify_vf_reset(vf);
        ice_reset_vf(vf, false);
}

/**
 * ice_get_vf_from_pfq - get the VF who owns the PF space queue passed in
 * @pf: PF used to index all VFs
 * @pfq: queue index relative to the PF's function space
 *
 * If no VF is found who owns the pfq then return NULL, otherwise return a
 * pointer to the VF who owns the pfq
 */
static struct ice_vf *ice_get_vf_from_pfq(struct ice_pf *pf, u16 pfq)
{
        unsigned int vf_id;

        ice_for_each_vf(pf, vf_id) {
                struct ice_vf *vf = &pf->vf[vf_id];
                struct ice_vsi *vsi;
                u16 rxq_idx;

                vsi = pf->vsi[vf->lan_vsi_idx];

                ice_for_each_rxq(vsi, rxq_idx)
                        if (vsi->rxq_map[rxq_idx] == pfq)
                                return vf;
        }

        return NULL;
}

/**
 * ice_globalq_to_pfq - convert from global queue index to PF space queue index
 * @pf: PF used for conversion
 * @globalq: global queue index used to convert to PF space queue index
 */
static u32 ice_globalq_to_pfq(struct ice_pf *pf, u32 globalq)
{
        return globalq - pf->hw.func_caps.common_cap.rxq_first_id;
}

/**
 * ice_vf_lan_overflow_event - handle LAN overflow event for a VF
 * @pf: PF that the LAN overflow event happened on
 * @event: structure holding the event information for the LAN overflow event
 *
 * Determine if the LAN overflow event was caused by a VF queue. If it was not
 * caused by a VF, do nothing. If a VF caused this LAN overflow event trigger a
 * reset on the offending VF.
 */
void
ice_vf_lan_overflow_event(struct ice_pf *pf, struct ice_rq_event_info *event)
{
        u32 gldcb_rtctq, queue;
        struct ice_vf *vf;

        gldcb_rtctq = le32_to_cpu(event->desc.params.lan_overflow.prtdcb_ruptq);
        dev_dbg(ice_pf_to_dev(pf), "GLDCB_RTCTQ: 0x%08x\n", gldcb_rtctq);

        /* event returns device global Rx queue number */
        queue = (gldcb_rtctq & GLDCB_RTCTQ_RXQNUM_M) >>
                GLDCB_RTCTQ_RXQNUM_S;

        vf = ice_get_vf_from_pfq(pf, ice_globalq_to_pfq(pf, queue));
        if (!vf)
                return;

        ice_vc_reset_vf(vf);
}

/**
 * ice_vc_send_msg_to_vf - Send message to VF
 * @vf: pointer to the VF info
 * @v_opcode: virtual channel opcode
 * @v_retval: virtual channel return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * send msg to VF
 */
static int
ice_vc_send_msg_to_vf(struct ice_vf *vf, u32 v_opcode,
                      enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
{
        enum ice_status aq_ret;
        struct device *dev;
        struct ice_pf *pf;

        if (!vf)
                return -EINVAL;

        pf = vf->pf;
        if (ice_validate_vf_id(pf, vf->vf_id))
                return -EINVAL;

        dev = ice_pf_to_dev(pf);

        /* single place to detect unsuccessful return values */
        if (v_retval) {
                vf->num_inval_msgs++;
                dev_info(dev, "VF %d failed opcode %d, retval: %d\n", vf->vf_id,
                         v_opcode, v_retval);
                if (vf->num_inval_msgs > ICE_DFLT_NUM_INVAL_MSGS_ALLOWED) {
                        dev_err(dev, "Number of invalid messages exceeded for VF %d\n",
                                vf->vf_id);
                        dev_err(dev, "Use PF Control I/F to enable the VF\n");
                        set_bit(ICE_VF_STATE_DIS, vf->vf_states);
                        return -EIO;
                }
        } else {
                vf->num_valid_msgs++;
                /* reset the invalid counter, if a valid message is received. */
                vf->num_inval_msgs = 0;
        }

        aq_ret = ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, v_opcode, v_retval,
                                       msg, msglen, NULL);
        if (aq_ret && pf->hw.mailboxq.sq_last_status != ICE_AQ_RC_ENOSYS) {
                dev_info(dev, "Unable to send the message to VF %d ret %s aq_err %s\n",
                         vf->vf_id, ice_stat_str(aq_ret),
                         ice_aq_str(pf->hw.mailboxq.sq_last_status));
                return -EIO;
        }

        return 0;
}

/**
 * ice_vc_get_ver_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to request the API version used by the PF
 */
static int ice_vc_get_ver_msg(struct ice_vf *vf, u8 *msg)
{
        struct virtchnl_version_info info = {
                VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
        };

        vf->vf_ver = *(struct virtchnl_version_info *)msg;
        /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
        if (VF_IS_V10(&vf->vf_ver))
                info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;

        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
                                     VIRTCHNL_STATUS_SUCCESS, (u8 *)&info,
                                     sizeof(struct virtchnl_version_info));
}

/**
 * ice_vc_get_vf_res_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to request its resources
 */
static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_vf_resource *vfres = NULL;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int len = 0;
        int ret;

        if (ice_check_vf_init(pf, vf)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto err;
        }

        len = sizeof(struct virtchnl_vf_resource);

        vfres = kzalloc(len, GFP_KERNEL);
        if (!vfres) {
                v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
                len = 0;
                goto err;
        }
        if (VF_IS_V11(&vf->vf_ver))
                vf->driver_caps = *(u32 *)msg;
        else
                vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
                                  VIRTCHNL_VF_OFFLOAD_RSS_REG |
                                  VIRTCHNL_VF_OFFLOAD_VLAN;

        vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto err;
        }

        if (!vsi->info.pvid)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
        } else {
                if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ)
                        vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
                else
                        vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
        }

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;

        if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED)
                vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;

        vfres->num_vsis = 1;
        /* Tx and Rx queue are equal for VF */
        vfres->num_queue_pairs = vsi->num_txq;
        vfres->max_vectors = pf->num_msix_per_vf;
        vfres->rss_key_size = ICE_VSIQF_HKEY_ARRAY_SIZE;
        vfres->rss_lut_size = ICE_VSIQF_HLUT_ARRAY_SIZE;

        vfres->vsi_res[0].vsi_id = vf->lan_vsi_num;
        vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
        vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
        ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
                        vf->dflt_lan_addr.addr);

        /* match guest capabilities */
        vf->driver_caps = vfres->vf_cap_flags;

        set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);

err:
        /* send the response back to the VF */
        ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, v_ret,

                                    (u8 *)vfres, len);

        kfree(vfres);
        return ret;
}

/**
 * ice_vc_reset_vf_msg
 * @vf: pointer to the VF info
 *
 * called from the VF to reset itself,
 * unlike other virtchnl messages, PF driver
 * doesn't send the response back to the VF
 */
static void ice_vc_reset_vf_msg(struct ice_vf *vf)
{
        if (test_bit(ICE_VF_STATE_INIT, vf->vf_states))
                ice_reset_vf(vf, false);
}

/**
 * ice_find_vsi_from_id
 * @pf: the PF structure to search for the VSI
 * @id: ID of the VSI it is searching for
 *
 * searches for the VSI with the given ID
 */
static struct ice_vsi *ice_find_vsi_from_id(struct ice_pf *pf, u16 id)
{
        int i;

        ice_for_each_vsi(pf, i)
                if (pf->vsi[i] && pf->vsi[i]->vsi_num == id)
                        return pf->vsi[i];

        return NULL;
}

/**
 * ice_vc_isvalid_vsi_id
 * @vf: pointer to the VF info
 * @vsi_id: VF relative VSI ID
 *
 * check for the valid VSI ID
 */
static bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        vsi = ice_find_vsi_from_id(pf, vsi_id);

        return (vsi && (vsi->vf_id == vf->vf_id));
}

/**
 * ice_vc_isvalid_q_id
 * @vf: pointer to the VF info
 * @vsi_id: VSI ID
 * @qid: VSI relative queue ID
 *
 * check for the valid queue ID
 */
static bool ice_vc_isvalid_q_id(struct ice_vf *vf, u16 vsi_id, u8 qid)
{
        struct ice_vsi *vsi = ice_find_vsi_from_id(vf->pf, vsi_id);
        /* allocated Tx and Rx queues should be always equal for VF VSI */
        return (vsi && (qid < vsi->alloc_txq));
}

/**
 * ice_vc_isvalid_ring_len
 * @ring_len: length of ring
 *
 * check for the valid ring count, should be multiple of ICE_REQ_DESC_MULTIPLE
 * or zero
 */
static bool ice_vc_isvalid_ring_len(u16 ring_len)
{
        return ring_len == 0 ||
               (ring_len >= ICE_MIN_NUM_DESC &&
                ring_len <= ICE_MAX_NUM_DESC &&
                !(ring_len % ICE_REQ_DESC_MULTIPLE));
}

/**
 * ice_vc_config_rss_key
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS key
 */
static int ice_vc_config_rss_key(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_rss_key *vrk =
                (struct virtchnl_rss_key *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vrk->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_set_rss(vsi, vrk->key, NULL, 0))
                v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_config_rss_lut
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS LUT
 */
static int ice_vc_config_rss_lut(struct ice_vf *vf, u8 *msg)
{
        struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vrl->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (vrl->lut_entries != ICE_VSIQF_HLUT_ARRAY_SIZE) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_set_rss(vsi, NULL, vrl->lut, ICE_VSIQF_HLUT_ARRAY_SIZE))
                v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, v_ret,
                                     NULL, 0);
}

/**
 * ice_wait_on_vf_reset - poll to make sure a given VF is ready after reset
 * @vf: The VF being resseting
 *
 * The max poll time is about ~800ms, which is about the maximum time it takes
 * for a VF to be reset and/or a VF driver to be removed.
 */
static void ice_wait_on_vf_reset(struct ice_vf *vf)
{
        int i;

        for (i = 0; i < ICE_MAX_VF_RESET_TRIES; i++) {
                if (test_bit(ICE_VF_STATE_INIT, vf->vf_states))
                        break;
                msleep(ICE_MAX_VF_RESET_SLEEP_MS);
        }
}

/**
 * ice_check_vf_ready_for_cfg - check if VF is ready to be configured/queried
 * @vf: VF to check if it's ready to be configured/queried
 *
 * The purpose of this function is to make sure the VF is not in reset, not
 * disabled, and initialized so it can be configured and/or queried by a host
 * administrator.
 */
static int ice_check_vf_ready_for_cfg(struct ice_vf *vf)
{
        struct ice_pf *pf;

        ice_wait_on_vf_reset(vf);

        if (ice_is_vf_disabled(vf))
                return -EINVAL;

        pf = vf->pf;
        if (ice_check_vf_init(pf, vf))
                return -EBUSY;

        return 0;
}

/**
 * ice_set_vf_spoofchk
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @ena: flag to enable or disable feature
 *
 * Enable or disable VF spoof checking
 */
int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_pf *pf = np->vsi->back;
        struct ice_vsi_ctx *ctx;
        struct ice_vsi *vf_vsi;
        enum ice_status status;
        struct device *dev;
        struct ice_vf *vf;
        int ret;

        dev = ice_pf_to_dev(pf);
        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        vf = &pf->vf[vf_id];
        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        vf_vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vf_vsi) {
                netdev_err(netdev, "VSI %d for VF %d is null\n",
                           vf->lan_vsi_idx, vf->vf_id);
                return -EINVAL;
        }

        if (vf_vsi->type != ICE_VSI_VF) {
                netdev_err(netdev, "Type %d of VSI %d for VF %d is no ICE_VSI_VF\n",
                           vf_vsi->type, vf_vsi->vsi_num, vf->vf_id);
                return -ENODEV;
        }

        if (ena == vf->spoofchk) {
                dev_dbg(dev, "VF spoofchk already %s\n", ena ? "ON" : "OFF");
                return 0;
        }

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

        ctx->info.sec_flags = vf_vsi->info.sec_flags;
        ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
        if (ena) {
                ctx->info.sec_flags |=
                        ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
                        (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                         ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
        } else {
                ctx->info.sec_flags &=
                        ~(ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
                          (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                           ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S));
        }

        status = ice_update_vsi(&pf->hw, vf_vsi->idx, ctx, NULL);
        if (status) {
                dev_err(dev, "Failed to %sable spoofchk on VF %d VSI %d\n error %s\n",
                        ena ? "en" : "dis", vf->vf_id, vf_vsi->vsi_num,
                        ice_stat_str(status));
                ret = -EIO;
                goto out;
        }

        /* only update spoofchk state and VSI context on success */
        vf_vsi->info.sec_flags = ctx->info.sec_flags;
        vf->spoofchk = ena;

out:
        kfree(ctx);
        return ret;
}

/**
 * ice_is_any_vf_in_promisc - check if any VF(s) are in promiscuous mode
 * @pf: PF structure for accessing VF(s)
 *
 * Return false if no VF(s) are in unicast and/or multicast promiscuous mode,
 * else return true
 */
bool ice_is_any_vf_in_promisc(struct ice_pf *pf)
{
        int vf_idx;

        ice_for_each_vf(pf, vf_idx) {
                struct ice_vf *vf = &pf->vf[vf_idx];

                /* found a VF that has promiscuous mode configured */
                if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
                    test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states))
                        return true;
        }

        return false;
}

/**
 * ice_vc_cfg_promiscuous_mode_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to configure VF VSIs promiscuous mode
 */
static int ice_vc_cfg_promiscuous_mode_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_promisc_info *info =
            (struct virtchnl_promisc_info *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        struct device *dev;
        bool rm_promisc;
        int ret = 0;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, info->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        dev = ice_pf_to_dev(pf);
        if (!test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
                dev_err(dev, "Unprivileged VF %d is attempting to configure promiscuous mode\n",
                        vf->vf_id);
                /* Leave v_ret alone, lie to the VF on purpose. */
                goto error_param;
        }

        rm_promisc = !(info->flags & FLAG_VF_UNICAST_PROMISC) &&
                !(info->flags & FLAG_VF_MULTICAST_PROMISC);

        if (vsi->num_vlan || vf->port_vlan_info) {
                struct ice_vsi *pf_vsi = ice_get_main_vsi(pf);
                struct net_device *pf_netdev;

                if (!pf_vsi) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                pf_netdev = pf_vsi->netdev;

                ret = ice_set_vf_spoofchk(pf_netdev, vf->vf_id, rm_promisc);
                if (ret) {
                        dev_err(dev, "Failed to update spoofchk to %s for VF %d VSI %d when setting promiscuous mode\n",
                                rm_promisc ? "ON" : "OFF", vf->vf_id,
                                vsi->vsi_num);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                }

                ret = ice_cfg_vlan_pruning(vsi, true, !rm_promisc);
                if (ret) {
                        dev_err(dev, "Failed to configure VLAN pruning in promiscuous mode\n");
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }
        }

        if (!test_bit(ICE_FLAG_VF_TRUE_PROMISC_ENA, pf->flags)) {
                bool set_dflt_vsi = !!(info->flags & FLAG_VF_UNICAST_PROMISC);

                if (set_dflt_vsi && !ice_is_dflt_vsi_in_use(pf->first_sw))
                        /* only attempt to set the default forwarding VSI if
                         * it's not currently set
                         */
                        ret = ice_set_dflt_vsi(pf->first_sw, vsi);
                else if (!set_dflt_vsi &&
                         ice_is_vsi_dflt_vsi(pf->first_sw, vsi))
                        /* only attempt to free the default forwarding VSI if we
                         * are the owner
                         */
                        ret = ice_clear_dflt_vsi(pf->first_sw);

                if (ret) {
                        dev_err(dev, "%sable VF %d as the default VSI failed, error %d\n",
                                set_dflt_vsi ? "en" : "dis", vf->vf_id, ret);
                        v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
                        goto error_param;
                }
        } else {
                enum ice_status status;
                u8 promisc_m;

                if (info->flags & FLAG_VF_UNICAST_PROMISC) {
                        if (vf->port_vlan_info || vsi->num_vlan)
                                promisc_m = ICE_UCAST_VLAN_PROMISC_BITS;
                        else
                                promisc_m = ICE_UCAST_PROMISC_BITS;
                } else if (info->flags & FLAG_VF_MULTICAST_PROMISC) {
                        if (vf->port_vlan_info || vsi->num_vlan)
                                promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
                        else
                                promisc_m = ICE_MCAST_PROMISC_BITS;
                } else {
                        if (vf->port_vlan_info || vsi->num_vlan)
                                promisc_m = ICE_UCAST_VLAN_PROMISC_BITS;
                        else
                                promisc_m = ICE_UCAST_PROMISC_BITS;
                }

                /* Configure multicast/unicast with or without VLAN promiscuous
                 * mode
                 */
                status = ice_vf_set_vsi_promisc(vf, vsi, promisc_m, rm_promisc);
                if (status) {
                        dev_err(dev, "%sable Tx/Rx filter promiscuous mode on VF-%d failed, error: %s\n",
                                rm_promisc ? "dis" : "en", vf->vf_id,
                                ice_stat_str(status));
                        v_ret = ice_err_to_virt_err(status);
                        goto error_param;
                } else {
                        dev_dbg(dev, "%sable Tx/Rx filter promiscuous mode on VF-%d succeeded\n",
                                rm_promisc ? "dis" : "en", vf->vf_id);
                }
        }

        if (info->flags & FLAG_VF_MULTICAST_PROMISC)
                set_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
        else
                clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);

        if (info->flags & FLAG_VF_UNICAST_PROMISC)
                set_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
        else
                clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);

error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
                                     v_ret, NULL, 0);
}

/**
 * ice_vc_get_stats_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to get VSI stats
 */
static int ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_queue_select *vqs =
                (struct virtchnl_queue_select *)msg;
        struct ice_eth_stats stats = { 0 };
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        ice_update_eth_stats(vsi);

        stats = vsi->eth_stats;

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, v_ret,
                                     (u8 *)&stats, sizeof(stats));
}

/**
 * ice_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTCHNL
 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
 *
 * Return true on successful validation, else false
 */
static bool ice_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
{
        if ((!vqs->rx_queues && !vqs->tx_queues) ||
            vqs->rx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF) ||
            vqs->tx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF))
                return false;

        return true;
}

/**
 * ice_vf_ena_txq_interrupt - enable Tx queue interrupt via QINT_TQCTL
 * @vsi: VSI of the VF to configure
 * @q_idx: VF queue index used to determine the queue in the PF's space
 */
static void ice_vf_ena_txq_interrupt(struct ice_vsi *vsi, u32 q_idx)
{
        struct ice_hw *hw = &vsi->back->hw;
        u32 pfq = vsi->txq_map[q_idx];
        u32 reg;

        reg = rd32(hw, QINT_TQCTL(pfq));

        /* MSI-X index 0 in the VF's space is always for the OICR, which means
         * this is most likely a poll mode VF driver, so don't enable an
         * interrupt that was never configured via VIRTCHNL_OP_CONFIG_IRQ_MAP
         */
        if (!(reg & QINT_TQCTL_MSIX_INDX_M))
                return;

        wr32(hw, QINT_TQCTL(pfq), reg | QINT_TQCTL_CAUSE_ENA_M);
}

/**
 * ice_vf_ena_rxq_interrupt - enable Tx queue interrupt via QINT_RQCTL
 * @vsi: VSI of the VF to configure
 * @q_idx: VF queue index used to determine the queue in the PF's space
 */
static void ice_vf_ena_rxq_interrupt(struct ice_vsi *vsi, u32 q_idx)
{
        struct ice_hw *hw = &vsi->back->hw;
        u32 pfq = vsi->rxq_map[q_idx];
        u32 reg;

        reg = rd32(hw, QINT_RQCTL(pfq));

        /* MSI-X index 0 in the VF's space is always for the OICR, which means
         * this is most likely a poll mode VF driver, so don't enable an
         * interrupt that was never configured via VIRTCHNL_OP_CONFIG_IRQ_MAP
         */
        if (!(reg & QINT_RQCTL_MSIX_INDX_M))
                return;

        wr32(hw, QINT_RQCTL(pfq), reg | QINT_RQCTL_CAUSE_ENA_M);
}

/**
 * ice_vc_ena_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to enable all or specific queue(s)
 */
static int ice_vc_ena_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_queue_select *vqs =
            (struct virtchnl_queue_select *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        unsigned long q_map;
        u16 vf_q_id;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_validate_vqs_bitmaps(vqs)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        /* Enable only Rx rings, Tx rings were enabled by the FW when the
         * Tx queue group list was configured and the context bits were
         * programmed using ice_vsi_cfg_txqs
         */
        q_map = vqs->rx_queues;
        for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* Skip queue if enabled */
                if (test_bit(vf_q_id, vf->rxq_ena))
                        continue;

                if (ice_vsi_ctrl_one_rx_ring(vsi, true, vf_q_id, true)) {
                        dev_err(ice_pf_to_dev(vsi->back), "Failed to enable Rx ring %d on VSI %d\n",
                                vf_q_id, vsi->vsi_num);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                ice_vf_ena_rxq_interrupt(vsi, vf_q_id);
                set_bit(vf_q_id, vf->rxq_ena);
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        q_map = vqs->tx_queues;
        for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* Skip queue if enabled */
                if (test_bit(vf_q_id, vf->txq_ena))
                        continue;

                ice_vf_ena_txq_interrupt(vsi, vf_q_id);
                set_bit(vf_q_id, vf->txq_ena);
        }

        /* Set flag to indicate that queues are enabled */
        if (v_ret == VIRTCHNL_STATUS_SUCCESS)
                set_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_dis_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to disable all or specific
 * queue(s)
 */
static int ice_vc_dis_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_queue_select *vqs =
            (struct virtchnl_queue_select *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        unsigned long q_map;
        u16 vf_q_id;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) &&
            !test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_validate_vqs_bitmaps(vqs)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (vqs->tx_queues) {
                q_map = vqs->tx_queues;

                for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                        struct ice_ring *ring = vsi->tx_rings[vf_q_id];
                        struct ice_txq_meta txq_meta = { 0 };

                        if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Skip queue if not enabled */
                        if (!test_bit(vf_q_id, vf->txq_ena))
                                continue;

                        ice_fill_txq_meta(vsi, ring, &txq_meta);

                        if (ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, vf->vf_id,
                                                 ring, &txq_meta)) {
                                dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Tx ring %d on VSI %d\n",
                                        vf_q_id, vsi->vsi_num);
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Clear enabled queues flag */
                        clear_bit(vf_q_id, vf->txq_ena);
                }
        }

        q_map = vqs->rx_queues;
        /* speed up Rx queue disable by batching them if possible */
        if (q_map &&
            bitmap_equal(&q_map, vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF)) {
                if (ice_vsi_stop_all_rx_rings(vsi)) {
                        dev_err(ice_pf_to_dev(vsi->back), "Failed to stop all Rx rings on VSI %d\n",
                                vsi->vsi_num);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF);
        } else if (q_map) {
                for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                        if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Skip queue if not enabled */
                        if (!test_bit(vf_q_id, vf->rxq_ena))
                                continue;

                        if (ice_vsi_ctrl_one_rx_ring(vsi, false, vf_q_id,
                                                     true)) {
                                dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Rx ring %d on VSI %d\n",
                                        vf_q_id, vsi->vsi_num);
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Clear enabled queues flag */
                        clear_bit(vf_q_id, vf->rxq_ena);
                }
        }

        /* Clear enabled queues flag */
        if (v_ret == VIRTCHNL_STATUS_SUCCESS && ice_vf_has_no_qs_ena(vf))
                clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, v_ret,
                                     NULL, 0);
}

/**
 * ice_cfg_interrupt
 * @vf: pointer to the VF info
 * @vsi: the VSI being configured
 * @vector_id: vector ID
 * @map: vector map for mapping vectors to queues
 * @q_vector: structure for interrupt vector
 * configure the IRQ to queue map
 */
static int
ice_cfg_interrupt(struct ice_vf *vf, struct ice_vsi *vsi, u16 vector_id,
                  struct virtchnl_vector_map *map,
                  struct ice_q_vector *q_vector)
{
        u16 vsi_q_id, vsi_q_id_idx;
        unsigned long qmap;

        q_vector->num_ring_rx = 0;
        q_vector->num_ring_tx = 0;

        qmap = map->rxq_map;
        for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) {
                vsi_q_id = vsi_q_id_idx;

                if (!ice_vc_isvalid_q_id(vf, vsi->vsi_num, vsi_q_id))
                        return VIRTCHNL_STATUS_ERR_PARAM;

                q_vector->num_ring_rx++;
                q_vector->rx.itr_idx = map->rxitr_idx;
                vsi->rx_rings[vsi_q_id]->q_vector = q_vector;
                ice_cfg_rxq_interrupt(vsi, vsi_q_id, vector_id,
                                      q_vector->rx.itr_idx);
        }

        qmap = map->txq_map;
        for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) {
                vsi_q_id = vsi_q_id_idx;

                if (!ice_vc_isvalid_q_id(vf, vsi->vsi_num, vsi_q_id))
                        return VIRTCHNL_STATUS_ERR_PARAM;

                q_vector->num_ring_tx++;
                q_vector->tx.itr_idx = map->txitr_idx;
                vsi->tx_rings[vsi_q_id]->q_vector = q_vector;
                ice_cfg_txq_interrupt(vsi, vsi_q_id, vector_id,
                                      q_vector->tx.itr_idx);
        }

        return VIRTCHNL_STATUS_SUCCESS;
}

/**
 * ice_vc_cfg_irq_map_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to configure the IRQ to queue map
 */
static int ice_vc_cfg_irq_map_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        u16 num_q_vectors_mapped, vsi_id, vector_id;
        struct virtchnl_irq_map_info *irqmap_info;
        struct virtchnl_vector_map *map;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int i;

        irqmap_info = (struct virtchnl_irq_map_info *)msg;
        num_q_vectors_mapped = irqmap_info->num_vectors;

        /* Check to make sure number of VF vectors mapped is not greater than
         * number of VF vectors originally allocated, and check that
         * there is actually at least a single VF queue vector mapped
         */
        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
            pf->num_msix_per_vf < num_q_vectors_mapped ||
            !num_q_vectors_mapped) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < num_q_vectors_mapped; i++) {
                struct ice_q_vector *q_vector;

                map = &irqmap_info->vecmap[i];

                vector_id = map->vector_id;
                vsi_id = map->vsi_id;
                /* vector_id is always 0-based for each VF, and can never be
                 * larger than or equal to the max allowed interrupts per VF
                 */
                if (!(vector_id < pf->num_msix_per_vf) ||
                    !ice_vc_isvalid_vsi_id(vf, vsi_id) ||
                    (!vector_id && (map->rxq_map || map->txq_map))) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* No need to map VF miscellaneous or rogue vector */
                if (!vector_id)
                        continue;

                /* Subtract non queue vector from vector_id passed by VF
                 * to get actual number of VSI queue vector array index
                 */
                q_vector = vsi->q_vectors[vector_id - ICE_NONQ_VECS_VF];
                if (!q_vector) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* lookout for the invalid queue index */
                v_ret = (enum virtchnl_status_code)
                        ice_cfg_interrupt(vf, vsi, vector_id, map, q_vector);
                if (v_ret)
                        goto error_param;
        }

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_cfg_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to configure the Rx/Tx queues
 */
static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_vsi_queue_config_info *qci =
            (struct virtchnl_vsi_queue_config_info *)msg;
        struct virtchnl_queue_pair_info *qpi;
        u16 num_rxq = 0, num_txq = 0;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int i;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (qci->num_queue_pairs > ICE_MAX_RSS_QS_PER_VF ||
            qci->num_queue_pairs > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) {
                dev_err(ice_pf_to_dev(pf), "VF-%d requesting more than supported number of queues: %d\n",
                        vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq));
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < qci->num_queue_pairs; i++) {
                qpi = &qci->qpair[i];
                if (qpi->txq.vsi_id != qci->vsi_id ||
                    qpi->rxq.vsi_id != qci->vsi_id ||
                    qpi->rxq.queue_id != qpi->txq.queue_id ||
                    qpi->txq.headwb_enabled ||
                    !ice_vc_isvalid_ring_len(qpi->txq.ring_len) ||
                    !ice_vc_isvalid_ring_len(qpi->rxq.ring_len) ||
                    !ice_vc_isvalid_q_id(vf, qci->vsi_id, qpi->txq.queue_id)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }
                /* copy Tx queue info from VF into VSI */
                if (qpi->txq.ring_len > 0) {
                        num_txq++;
                        vsi->tx_rings[i]->dma = qpi->txq.dma_ring_addr;
                        vsi->tx_rings[i]->count = qpi->txq.ring_len;
                }

                /* copy Rx queue info from VF into VSI */
                if (qpi->rxq.ring_len > 0) {
                        num_rxq++;
                        vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
                        vsi->rx_rings[i]->count = qpi->rxq.ring_len;

                        if (qpi->rxq.databuffer_size != 0 &&
                            (qpi->rxq.databuffer_size > ((16 * 1024) - 128) ||
                             qpi->rxq.databuffer_size < 1024)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }
                        vsi->rx_buf_len = qpi->rxq.databuffer_size;
                        vsi->rx_rings[i]->rx_buf_len = vsi->rx_buf_len;
                        if (qpi->rxq.max_pkt_size >= (16 * 1024) ||
                            qpi->rxq.max_pkt_size < 64) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }
                }

                vsi->max_frame = qpi->rxq.max_pkt_size;
        }

        /* VF can request to configure less than allocated queues