/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Driver
 * Copyright(c) 2013 - 2015 Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

#include "i40e.h"

/*********************notification routines***********************/

/**
 * i40e_vc_vf_broadcast
 * @pf: pointer to the PF structure
 * @opcode: operation code
 * @retval: return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * send a message to all VFs on a given PF
 **/
static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
                                 enum i40e_virtchnl_ops v_opcode,
                                 i40e_status v_retval, u8 *msg,
                                 u16 msglen)
{
        struct i40e_hw *hw = &pf->hw;
        struct i40e_vf *vf = pf->vf;
        int i;

        for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
                int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
                /* Not all vfs are enabled so skip the ones that are not */
                if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
                    !test_bit(I40E_VF_STAT_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
                 */
                i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
                                       msg, msglen, NULL);
        }
}

/**
 * i40e_vc_notify_link_state
 * @vf: pointer to the VF structure
 *
 * send a link status message to a single VF
 **/
static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
{
        struct i40e_virtchnl_pf_event pfe;
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_link_status *ls = &pf->hw.phy.link_info;
        int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

        pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
        pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
        if (vf->link_forced) {
                pfe.event_data.link_event.link_status = vf->link_up;
                pfe.event_data.link_event.link_speed =
                        (vf->link_up ? I40E_LINK_SPEED_40GB : 0);
        } else {
                pfe.event_data.link_event.link_status =
                        ls->link_info & I40E_AQ_LINK_UP;
                pfe.event_data.link_event.link_speed = ls->link_speed;
        }
        i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
                               0, (u8 *)&pfe, sizeof(pfe), NULL);
}

/**
 * i40e_vc_notify_link_state
 * @pf: pointer to the PF structure
 *
 * send a link status message to all VFs on a given PF
 **/
void i40e_vc_notify_link_state(struct i40e_pf *pf)
{
        int i;

        for (i = 0; i < pf->num_alloc_vfs; i++)
                i40e_vc_notify_vf_link_state(&pf->vf[i]);
}

/**
 * i40e_vc_notify_reset
 * @pf: pointer to the PF structure
 *
 * indicate a pending reset to all VFs on a given PF
 **/
void i40e_vc_notify_reset(struct i40e_pf *pf)
{
        struct i40e_virtchnl_pf_event pfe;

        pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
        i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, 0,
                             (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
}

/**
 * i40e_vc_notify_vf_reset
 * @vf: pointer to the VF structure
 *
 * indicate a pending reset to the given VF
 **/
void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
{
        struct i40e_virtchnl_pf_event pfe;
        int abs_vf_id;

        /* validate the request */
        if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
                return;

        /* verify if the VF is in either init or active before proceeding */
        if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
            !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
                return;

        abs_vf_id = vf->vf_id + vf->pf->hw.func_caps.vf_base_id;

        pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
        i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
                               0, (u8 *)&pfe,
                               sizeof(struct i40e_virtchnl_pf_event), NULL);
}
/***********************misc routines*****************************/

/**
 * i40e_vc_disable_vf
 * @pf: pointer to the PF info
 * @vf: pointer to the VF info
 *
 * Disable the VF through a SW reset
 **/
static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
{
        struct i40e_hw *hw = &pf->hw;
        u32 reg;

        reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
        reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
        wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
        i40e_flush(hw);
}

/**
 * i40e_vc_isvalid_vsi_id
 * @vf: pointer to the VF info
 * @vsi_id: VF relative VSI id
 *
 * check for the valid VSI id
 **/
static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);

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

/**
 * i40e_vc_isvalid_queue_id
 * @vf: pointer to the VF info
 * @vsi_id: vsi id
 * @qid: vsi relative queue id
 *
 * check for the valid queue id
 **/
static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
                                            u8 qid)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);

        return (vsi && (qid < vsi->alloc_queue_pairs));
}

/**
 * i40e_vc_isvalid_vector_id
 * @vf: pointer to the VF info
 * @vector_id: VF relative vector id
 *
 * check for the valid vector id
 **/
static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
{
        struct i40e_pf *pf = vf->pf;

        return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
}

/***********************vf resource mgmt routines*****************/

/**
 * i40e_vc_get_pf_queue_id
 * @vf: pointer to the VF info
 * @vsi_id: id of VSI as provided by the FW
 * @vsi_queue_id: vsi relative queue id
 *
 * return PF relative queue id
 **/
static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
                                   u8 vsi_queue_id)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
        u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;

        if (!vsi)
                return pf_queue_id;

        if (le16_to_cpu(vsi->info.mapping_flags) &
            I40E_AQ_VSI_QUE_MAP_NONCONTIG)
                pf_queue_id =
                        le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
        else
                pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
                              vsi_queue_id;

        return pf_queue_id;
}

/**
 * i40e_config_irq_link_list
 * @vf: pointer to the VF info
 * @vsi_id: id of VSI as given by the FW
 * @vecmap: irq map info
 *
 * configure irq link list from the map
 **/
static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
                                      struct i40e_virtchnl_vector_map *vecmap)
{
        unsigned long linklistmap = 0, tempmap;
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        u16 vsi_queue_id, pf_queue_id;
        enum i40e_queue_type qtype;
        u16 next_q, vector_id;
        u32 reg, reg_idx;
        u16 itr_idx = 0;

        vector_id = vecmap->vector_id;
        /* setup the head */
        if (0 == vector_id)
                reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
        else
                reg_idx = I40E_VPINT_LNKLSTN(
                     ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
                     (vector_id - 1));

        if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
                /* Special case - No queues mapped on this vector */
                wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
                goto irq_list_done;
        }
        tempmap = vecmap->rxq_map;
        for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
                linklistmap |= (1 <<
                                (I40E_VIRTCHNL_SUPPORTED_QTYPES *
                                 vsi_queue_id));
        }

        tempmap = vecmap->txq_map;
        for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
                linklistmap |= (1 <<
                                (I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id
                                 + 1));
        }

        next_q = find_first_bit(&linklistmap,
                                (I40E_MAX_VSI_QP *
                                 I40E_VIRTCHNL_SUPPORTED_QTYPES));
        vsi_queue_id = next_q/I40E_VIRTCHNL_SUPPORTED_QTYPES;
        qtype = next_q%I40E_VIRTCHNL_SUPPORTED_QTYPES;
        pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
        reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);

        wr32(hw, reg_idx, reg);

        while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
                switch (qtype) {
                case I40E_QUEUE_TYPE_RX:
                        reg_idx = I40E_QINT_RQCTL(pf_queue_id);
                        itr_idx = vecmap->rxitr_idx;
                        break;
                case I40E_QUEUE_TYPE_TX:
                        reg_idx = I40E_QINT_TQCTL(pf_queue_id);
                        itr_idx = vecmap->txitr_idx;
                        break;
                default:
                        break;
                }

                next_q = find_next_bit(&linklistmap,
                                       (I40E_MAX_VSI_QP *
                                        I40E_VIRTCHNL_SUPPORTED_QTYPES),
                                       next_q + 1);
                if (next_q <
                    (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
                        vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
                        qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
                        pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
                                                              vsi_queue_id);
                } else {
                        pf_queue_id = I40E_QUEUE_END_OF_LIST;
                        qtype = 0;
                }

                /* format for the RQCTL & TQCTL regs is same */
                reg = (vector_id) |
                    (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
                    (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
                    (1 << I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
                    (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
                wr32(hw, reg_idx, reg);
        }

irq_list_done:
        i40e_flush(hw);
}

/**
 * i40e_config_vsi_tx_queue
 * @vf: pointer to the VF info
 * @vsi_id: id of VSI as provided by the FW
 * @vsi_queue_id: vsi relative queue index
 * @info: config. info
 *
 * configure tx queue
 **/
static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
                                    u16 vsi_queue_id,
                                    struct i40e_virtchnl_txq_info *info)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_hmc_obj_txq tx_ctx;
        struct i40e_vsi *vsi;
        u16 pf_queue_id;
        u32 qtx_ctl;
        int ret = 0;

        pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
        vsi = i40e_find_vsi_from_id(pf, vsi_id);

        /* clear the context structure first */
        memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));

        /* only set the required fields */
        tx_ctx.base = info->dma_ring_addr / 128;
        tx_ctx.qlen = info->ring_len;
        tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
        tx_ctx.rdylist_act = 0;
        tx_ctx.head_wb_ena = info->headwb_enabled;
        tx_ctx.head_wb_addr = info->dma_headwb_addr;

        /* clear the context in the HMC */
        ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
        if (ret) {
                dev_err(&pf->pdev->dev,
                        "Failed to clear VF LAN Tx queue context %d, error: %d\n",
                        pf_queue_id, ret);
                ret = -ENOENT;
                goto error_context;
        }

        /* set the context in the HMC */
        ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
        if (ret) {
                dev_err(&pf->pdev->dev,
                        "Failed to set VF LAN Tx queue context %d error: %d\n",
                        pf_queue_id, ret);
                ret = -ENOENT;
                goto error_context;
        }

        /* associate this queue with the PCI VF function */
        qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
        qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
                    & I40E_QTX_CTL_PF_INDX_MASK);
        qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
                     << I40E_QTX_CTL_VFVM_INDX_SHIFT)
                    & I40E_QTX_CTL_VFVM_INDX_MASK);
        wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
        i40e_flush(hw);

error_context:
        return ret;
}

/**
 * i40e_config_vsi_rx_queue
 * @vf: pointer to the VF info
 * @vsi_id: id of VSI  as provided by the FW
 * @vsi_queue_id: vsi relative queue index
 * @info: config. info
 *
 * configure rx queue
 **/
static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
                                    u16 vsi_queue_id,
                                    struct i40e_virtchnl_rxq_info *info)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_hmc_obj_rxq rx_ctx;
        u16 pf_queue_id;
        int ret = 0;

        pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);

        /* clear the context structure first */
        memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));

        /* only set the required fields */
        rx_ctx.base = info->dma_ring_addr / 128;
        rx_ctx.qlen = info->ring_len;

        if (info->splithdr_enabled) {
                rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
                                  I40E_RX_SPLIT_IP      |
                                  I40E_RX_SPLIT_TCP_UDP |
                                  I40E_RX_SPLIT_SCTP;
                /* header length validation */
                if (info->hdr_size > ((2 * 1024) - 64)) {
                        ret = -EINVAL;
                        goto error_param;
                }
                rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;

                /* set splitalways mode 10b */
                rx_ctx.dtype = 0x2;
        }

        /* databuffer length validation */
        if (info->databuffer_size > ((16 * 1024) - 128)) {
                ret = -EINVAL;
                goto error_param;
        }
        rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;

        /* max pkt. length validation */
        if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
                ret = -EINVAL;
                goto error_param;
        }
        rx_ctx.rxmax = info->max_pkt_size;

        /* enable 32bytes desc always */
        rx_ctx.dsize = 1;

        /* default values */
        rx_ctx.lrxqthresh = 2;
        rx_ctx.crcstrip = 1;
        rx_ctx.prefena = 1;
        rx_ctx.l2tsel = 1;

        /* clear the context in the HMC */
        ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
        if (ret) {
                dev_err(&pf->pdev->dev,
                        "Failed to clear VF LAN Rx queue context %d, error: %d\n",
                        pf_queue_id, ret);
                ret = -ENOENT;
                goto error_param;
        }

        /* set the context in the HMC */
        ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
        if (ret) {
                dev_err(&pf->pdev->dev,
                        "Failed to set VF LAN Rx queue context %d error: %d\n",
                        pf_queue_id, ret);
                ret = -ENOENT;
                goto error_param;
        }

error_param:
        return ret;
}

/**
 * i40e_alloc_vsi_res
 * @vf: pointer to the VF info
 * @type: type of VSI to allocate
 *
 * alloc VF vsi context & resources
 **/
static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
{
        struct i40e_mac_filter *f = NULL;
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi;
        int ret = 0;

        vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);

        if (!vsi) {
                dev_err(&pf->pdev->dev,
                        "add vsi failed for VF %d, aq_err %d\n",
                        vf->vf_id, pf->hw.aq.asq_last_status);
                ret = -ENOENT;
                goto error_alloc_vsi_res;
        }
        if (type == I40E_VSI_SRIOV) {
                u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
                vf->lan_vsi_idx = vsi->idx;
                vf->lan_vsi_id = vsi->id;
                /* If the port VLAN has been configured and then the
                 * VF driver was removed then the VSI port VLAN
                 * configuration was destroyed.  Check if there is
                 * a port VLAN and restore the VSI configuration if
                 * needed.
                 */
                if (vf->port_vlan_id)
                        i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
                f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
                                    vf->port_vlan_id, true, false);
                if (!f)
                        dev_info(&pf->pdev->dev,
                                 "Could not allocate VF MAC addr\n");
                f = i40e_add_filter(vsi, brdcast, vf->port_vlan_id,
                                    true, false);
                if (!f)
                        dev_info(&pf->pdev->dev,
                                 "Could not allocate VF broadcast filter\n");
        }

        /* program mac filter */
        ret = i40e_sync_vsi_filters(vsi);
        if (ret)
                dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");

        /* Set VF bandwidth if specified */
        if (vf->tx_rate) {
                ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
                                                  vf->tx_rate / 50, 0, NULL);
                if (ret)
                        dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
                                vf->vf_id, ret);
        }

error_alloc_vsi_res:
        return ret;
}

/**
 * i40e_enable_vf_mappings
 * @vf: pointer to the VF info
 *
 * enable VF mappings
 **/
static void i40e_enable_vf_mappings(struct i40e_vf *vf)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        u32 reg, total_queue_pairs = 0;
        int j;

        /* Tell the hardware we're using noncontiguous mapping. HW requires
         * that VF queues be mapped using this method, even when they are
         * contiguous in real life
         */
        wr32(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
             I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);

        /* enable VF vplan_qtable mappings */
        reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
        wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);

        /* map PF queues to VF queues */
        for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) {
                u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j);
                reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
                wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
                total_queue_pairs++;
        }

        /* map PF queues to VSI */
        for (j = 0; j < 7; j++) {
                if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) {
                        reg = 0x07FF07FF;       /* unused */
                } else {
                        u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
                                                          j * 2);
                        reg = qid;
                        qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
                                                      (j * 2) + 1);
                        reg |= qid << 16;
                }
                wr32(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id), reg);
        }

        i40e_flush(hw);
}

/**
 * i40e_disable_vf_mappings
 * @vf: pointer to the VF info
 *
 * disable VF mappings
 **/
static void i40e_disable_vf_mappings(struct i40e_vf *vf)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        int i;

        /* disable qp mappings */
        wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
        for (i = 0; i < I40E_MAX_VSI_QP; i++)
                wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
                     I40E_QUEUE_END_OF_LIST);
        i40e_flush(hw);
}

/**
 * i40e_free_vf_res
 * @vf: pointer to the VF info
 *
 * free VF resources
 **/
static void i40e_free_vf_res(struct i40e_vf *vf)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        u32 reg_idx, reg;
        int i, msix_vf;

        /* free vsi & disconnect it from the parent uplink */
        if (vf->lan_vsi_idx) {
                i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
                vf->lan_vsi_idx = 0;
                vf->lan_vsi_id = 0;
        }
        msix_vf = pf->hw.func_caps.num_msix_vectors_vf;

        /* disable interrupts so the VF starts in a known state */
        for (i = 0; i < msix_vf; i++) {
                /* format is same for both registers */
                if (0 == i)
                        reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
                else
                        reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
                                                      (vf->vf_id))
                                                     + (i - 1));
                wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
                i40e_flush(hw);
        }

        /* clear the irq settings */
        for (i = 0; i < msix_vf; i++) {
                /* format is same for both registers */
                if (0 == i)
                        reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
                else
                        reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
                                                      (vf->vf_id))
                                                     + (i - 1));
                reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
                       I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
                wr32(hw, reg_idx, reg);
                i40e_flush(hw);
        }
        /* reset some of the state varibles keeping
         * track of the resources
         */
        vf->num_queue_pairs = 0;
        vf->vf_states = 0;
}

/**
 * i40e_alloc_vf_res
 * @vf: pointer to the VF info
 *
 * allocate VF resources
 **/
static int i40e_alloc_vf_res(struct i40e_vf *vf)
{
        struct i40e_pf *pf = vf->pf;
        int total_queue_pairs = 0;
        int ret;

        /* allocate hw vsi context & associated resources */
        ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
        if (ret)
                goto error_alloc;
        total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
        set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);

        /* store the total qps number for the runtime
         * VF req validation
         */
        vf->num_queue_pairs = total_queue_pairs;

        /* VF is now completely initialized */
        set_bit(I40E_VF_STAT_INIT, &vf->vf_states);

error_alloc:
        if (ret)
                i40e_free_vf_res(vf);

        return ret;
}

#define VF_DEVICE_STATUS 0xAA
#define VF_TRANS_PENDING_MASK 0x20
/**
 * i40e_quiesce_vf_pci
 * @vf: pointer to the VF structure
 *
 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
 * if the transactions never clear.
 **/
static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        int vf_abs_id, i;
        u32 reg;

        vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;

        wr32(hw, I40E_PF_PCI_CIAA,
             VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
        for (i = 0; i < 100; i++) {
                reg = rd32(hw, I40E_PF_PCI_CIAD);
                if ((reg & VF_TRANS_PENDING_MASK) == 0)
                        return 0;
                udelay(1);
        }
        return -EIO;
}

/**
 * i40e_reset_vf
 * @vf: pointer to the VF structure
 * @flr: VFLR was issued or not
 *
 * reset the VF
 **/
void i40e_reset_vf(struct i40e_vf *vf, bool flr)
{
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        bool rsd = false;
        int i;
        u32 reg;

        if (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
                return;

        /* warn the VF */
        clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);

        /* 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 (!flr) {
                /* reset VF using VPGEN_VFRTRIG reg */
                reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
                reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
                wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
                i40e_flush(hw);
        }

        if (i40e_quiesce_vf_pci(vf))
                dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
                        vf->vf_id);

        /* 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. Due to internal HW FIFO flushes,
                 * we must wait 10ms before the register will be valid.
                 */
                usleep_range(10000, 20000);
                reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
                if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
                        rsd = true;
                        break;
                }
        }

        if (flr)
                usleep_range(10000, 20000);

        if (!rsd)
                dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
                        vf->vf_id);
        wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
        /* clear the reset bit in the VPGEN_VFRTRIG reg */
        reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
        reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
        wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);

        /* On initial reset, we won't have any queues */
        if (vf->lan_vsi_idx == 0)
                goto complete_reset;

        i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false);
complete_reset:
        /* reallocate VF resources to reset the VSI state */
        i40e_free_vf_res(vf);
        i40e_alloc_vf_res(vf);
        i40e_enable_vf_mappings(vf);
        set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);

        /* tell the VF the reset is done */
        wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
        i40e_flush(hw);
        clear_bit(__I40E_VF_DISABLE, &pf->state);
}

/**
 * i40e_free_vfs
 * @pf: pointer to the PF structure
 *
 * free VF resources
 **/
void i40e_free_vfs(struct i40e_pf *pf)
{
        struct i40e_hw *hw = &pf->hw;
        u32 reg_idx, bit_idx;
        int i, tmp, vf_id;

        if (!pf->vf)
                return;
        while (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
                usleep_range(1000, 2000);

        for (i = 0; i < pf->num_alloc_vfs; i++)
                if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
                        i40e_vsi_control_rings(pf->vsi[pf->vf[i].lan_vsi_idx],
                                               false);

        /* 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(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");

        msleep(20); /* let any messages in transit get finished up */

        /* free up VF resources */
        tmp = pf->num_alloc_vfs;
        pf->num_alloc_vfs = 0;
        for (i = 0; i < tmp; i++) {
                if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
                        i40e_free_vf_res(&pf->vf[i]);
                /* disable qp mappings */
                i40e_disable_vf_mappings(&pf->vf[i]);
        }

        kfree(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)) {
                /* 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++) {
                        reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
                        bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
                        wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
                }
        }
        clear_bit(__I40E_VF_DISABLE, &pf->state);
}

#ifdef CONFIG_PCI_IOV
/**
 * i40e_alloc_vfs
 * @pf: pointer to the PF structure
 * @num_alloc_vfs: number of VFs to allocate
 *
 * allocate VF resources
 **/
int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
{
        struct i40e_vf *vfs;
        int i, ret = 0;

        /* Disable interrupt 0 so we don't try to handle the VFLR. */
        i40e_irq_dynamic_disable_icr0(pf);

        /* Check to see if we're just allocating resources for extant VFs */
        if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
                ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
                if (ret) {
                        dev_err(&pf->pdev->dev,
                                "Failed to enable SR-IOV, error %d.\n", ret);
                        pf->num_alloc_vfs = 0;
                        goto err_iov;
                }
        }
        /* allocate memory */
        vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
        if (!vfs) {
                ret = -ENOMEM;
                goto err_alloc;
        }
        pf->vf = vfs;

        /* apply default profile */
        for (i = 0; i < num_alloc_vfs; i++) {
                vfs[i].pf = pf;
                vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
                vfs[i].vf_id = i;

                /* assign default capabilities */
                set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
                vfs[i].spoofchk = true;
                /* VF resources get allocated during reset */
                i40e_reset_vf(&vfs[i], false);

                /* enable VF vplan_qtable mappings */
                i40e_enable_vf_mappings(&vfs[i]);
        }
        pf->num_alloc_vfs = num_alloc_vfs;

err_alloc:
        if (ret)
                i40e_free_vfs(pf);
err_iov:
        /* Re-enable interrupt 0. */
        i40e_irq_dynamic_enable_icr0(pf);
        return ret;
}

#endif
/**
 * i40e_pci_sriov_enable
 * @pdev: pointer to a pci_dev structure
 * @num_vfs: number of VFs to allocate
 *
 * Enable or change the number of VFs
 **/
static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
{
#ifdef CONFIG_PCI_IOV
        struct i40e_pf *pf = pci_get_drvdata(pdev);
        int pre_existing_vfs = pci_num_vf(pdev);
        int err = 0;

        dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
        if (pre_existing_vfs && pre_existing_vfs != num_vfs)
                i40e_free_vfs(pf);
        else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
                goto out;

        if (num_vfs > pf->num_req_vfs) {
                err = -EPERM;
                goto err_out;
        }

        err = i40e_alloc_vfs(pf, num_vfs);
        if (err) {
                dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
                goto err_out;
        }

out:

        return num_vfs;

err_out:
        return err;
#endif
        return 0;
}

/**
 * i40e_pci_sriov_configure
 * @pdev: pointer to a pci_dev structure
 * @num_vfs: number of VFs to allocate
 *
 * Enable or change the number of VFs. Called when the user updates the number
 * of VFs in sysfs.
 **/
int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
        struct i40e_pf *pf = pci_get_drvdata(pdev);

        if (num_vfs) {
                if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
                        pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
                        i40e_do_reset_safe(pf,
                                           BIT_ULL(__I40E_PF_RESET_REQUESTED));
                }
                return i40e_pci_sriov_enable(pdev, num_vfs);
        }

        if (!pci_vfs_assigned(pf->pdev)) {
                i40e_free_vfs(pf);
                pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
                i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
        } else {
                dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
                return -EINVAL;
        }
        return 0;
}

/***********************virtual channel routines******************/

/**
 * i40e_vc_send_msg_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 i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
                                  u32 v_retval, u8 *msg, u16 msglen)
{
        struct i40e_pf *pf;
        struct i40e_hw *hw;
        int abs_vf_id;
        i40e_status aq_ret;

        /* validate the request */
        if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
                return -EINVAL;

        pf = vf->pf;
        hw = &pf->hw;
        abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

        /* single place to detect unsuccessful return values */
        if (v_retval) {
                vf->num_invalid_msgs++;
                dev_err(&pf->pdev->dev, "Failed opcode %d Error: %d\n",
                        v_opcode, v_retval);
                if (vf->num_invalid_msgs >
                    I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
                        dev_err(&pf->pdev->dev,
                                "Number of invalid messages exceeded for VF %d\n",
                                vf->vf_id);
                        dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
                        set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
                }
        } else {
                vf->num_valid_msgs++;
        }

        aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id,  v_opcode, v_retval,
                                        msg, msglen, NULL);
        if (aq_ret) {
                dev_err(&pf->pdev->dev,
                        "Unable to send the message to VF %d aq_err %d\n",
                        vf->vf_id, pf->hw.aq.asq_last_status);
                return -EIO;
        }

        return 0;
}

/**
 * i40e_vc_send_resp_to_vf
 * @vf: pointer to the VF info
 * @opcode: operation code
 * @retval: return value
 *
 * send resp msg to VF
 **/
static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
                                   enum i40e_virtchnl_ops opcode,
                                   i40e_status retval)
{
        return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
}

/**
 * i40e_vc_get_version_msg
 * @vf: pointer to the VF info
 *
 * called from the VF to request the API version used by the PF
 **/
static int i40e_vc_get_version_msg(struct i40e_vf *vf)
{
        struct i40e_virtchnl_version_info info = {
                I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
        };

        return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
                                      I40E_SUCCESS, (u8 *)&info,
                                      sizeof(struct
                                             i40e_virtchnl_version_info));
}

/**
 * i40e_vc_get_vf_resources_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to request its resources
 **/
static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf)
{
        struct i40e_virtchnl_vf_resource *vfres = NULL;
        struct i40e_pf *pf = vf->pf;
        i40e_status aq_ret = 0;
        struct i40e_vsi *vsi;
        int i = 0, len = 0;
        int num_vsis = 1;
        int ret;

        if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
                aq_ret = I40E_ERR_PARAM;
                goto err;
        }

        len = (sizeof(struct i40e_virtchnl_vf_resource) +
               sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);

        vfres = kzalloc(len, GFP_KERNEL);
        if (!vfres) {
                aq_ret = I40E_ERR_NO_MEMORY;
                len = 0;
                goto err;
        }

        vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi->info.pvid)
                vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;

        vfres->num_vsis = num_vsis;
        vfres->num_queue_pairs = vf->num_queue_pairs;
        vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
        if (vf->lan_vsi_idx) {
                vfres->vsi_res[i].vsi_id = vf->lan_vsi_id;
                vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV;
                vfres->vsi_res[i].num_queue_pairs =
                    pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
                memcpy(vfres->vsi_res[i].default_mac_addr,
                       vf->default_lan_addr.addr, ETH_ALEN);
                i++;
        }
        set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);

err:
        /* send the response back to the VF */
        ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
                                     aq_ret, (u8 *)vfres, len);

        kfree(vfres);
        return ret;
}

/**
 * i40e_vc_reset_vf_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to reset itself,
 * unlike other virtchnl messages, PF driver
 * doesn't send the response back to the VF
 **/
static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
{
        if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
                i40e_reset_vf(vf, false);
}

/**
 * i40e_vc_config_promiscuous_mode_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to configure the promiscuous mode of
 * VF vsis
 **/
static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
                                               u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_promisc_info *info =
            (struct i40e_virtchnl_promisc_info *)msg;
        struct i40e_pf *pf = vf->pf;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_vsi *vsi;
        bool allmulti = false;
        i40e_status aq_ret;

        vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
            !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
            (vsi->type != I40E_VSI_FCOE)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }
        if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
                allmulti = true;
        aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
                                                       allmulti, NULL);

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf,
                                       I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
                                       aq_ret);
}

/**
 * i40e_vc_config_queues_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to configure the rx/tx
 * queues
 **/
static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_vsi_queue_config_info *qci =
            (struct i40e_virtchnl_vsi_queue_config_info *)msg;
        struct i40e_virtchnl_queue_pair_info *qpi;
        struct i40e_pf *pf = vf->pf;
        u16 vsi_id, vsi_queue_id;
        i40e_status aq_ret = 0;
        int i;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        vsi_id = qci->vsi_id;
        if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }
        for (i = 0; i < qci->num_queue_pairs; i++) {
                qpi = &qci->qpair[i];
                vsi_queue_id = qpi->txq.queue_id;
                if ((qpi->txq.vsi_id != vsi_id) ||
                    (qpi->rxq.vsi_id != vsi_id) ||
                    (qpi->rxq.queue_id != vsi_queue_id) ||
                    !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
                        aq_ret = I40E_ERR_PARAM;
                        goto error_param;
                }

                if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
                                             &qpi->rxq) ||
                    i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
                                             &qpi->txq)) {
                        aq_ret = I40E_ERR_PARAM;
                        goto error_param;
                }
        }
        /* set vsi num_queue_pairs in use to num configured by VF */
        pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs;

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
                                       aq_ret);
}

/**
 * i40e_vc_config_irq_map_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to configure the irq to
 * queue map
 **/
static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_irq_map_info *irqmap_info =
            (struct i40e_virtchnl_irq_map_info *)msg;
        struct i40e_virtchnl_vector_map *map;
        u16 vsi_id, vsi_queue_id, vector_id;
        i40e_status aq_ret = 0;
        unsigned long tempmap;
        int i;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < irqmap_info->num_vectors; i++) {
                map = &irqmap_info->vecmap[i];

                vector_id = map->vector_id;
                vsi_id = map->vsi_id;
                /* validate msg params */
                if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
                    !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                        aq_ret = I40E_ERR_PARAM;
                        goto error_param;
                }

                /* lookout for the invalid queue index */
                tempmap = map->rxq_map;
                for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
                        if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
                                                      vsi_queue_id)) {
                                aq_ret = I40E_ERR_PARAM;
                                goto error_param;
                        }
                }

                tempmap = map->txq_map;
                for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
                        if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
                                                      vsi_queue_id)) {
                                aq_ret = I40E_ERR_PARAM;
                                goto error_param;
                        }
                }

                i40e_config_irq_link_list(vf, vsi_id, map);
        }
error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
                                       aq_ret);
}

/**
 * i40e_vc_enable_queues_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to enable all or specific queue(s)
 **/
static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_queue_select *vqs =
            (struct i40e_virtchnl_queue_select *)msg;
        struct i40e_pf *pf = vf->pf;
        u16 vsi_id = vqs->vsi_id;
        i40e_status aq_ret = 0;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], true))
                aq_ret = I40E_ERR_TIMEOUT;
error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
                                       aq_ret);
}

/**
 * i40e_vc_disable_queues_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to disable all or specific
 * queue(s)
 **/
static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_queue_select *vqs =
            (struct i40e_virtchnl_queue_select *)msg;
        struct i40e_pf *pf = vf->pf;
        i40e_status aq_ret = 0;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false))
                aq_ret = I40E_ERR_TIMEOUT;

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
                                       aq_ret);
}

/**
 * i40e_vc_get_stats_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the VF to get vsi stats
 **/
static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_queue_select *vqs =
            (struct i40e_virtchnl_queue_select *)msg;
        struct i40e_pf *pf = vf->pf;
        struct i40e_eth_stats stats;
        i40e_status aq_ret = 0;
        struct i40e_vsi *vsi;

        memset(&stats, 0, sizeof(struct i40e_eth_stats));

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }
        i40e_update_eth_stats(vsi);
        stats = vsi->eth_stats;

error_param:
        /* send the response back to the VF */
        return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
                                      (u8 *)&stats, sizeof(stats));
}

/**
 * i40e_check_vf_permission
 * @vf: pointer to the VF info
 * @macaddr: pointer to the MAC Address being checked
 *
 * Check if the VF has permission to add or delete unicast MAC address
 * filters and return error code -EPERM if not.  Then check if the
 * address filter requested is broadcast or zero and if so return
 * an invalid MAC address error code.
 **/
static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
{
        struct i40e_pf *pf = vf->pf;
        int ret = 0;

        if (is_broadcast_ether_addr(macaddr) ||
                   is_zero_ether_addr(macaddr)) {
                dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
                ret = I40E_ERR_INVALID_MAC_ADDR;
        } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
                   !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
                /* If the host VMM administrator has set the VF MAC address
                 * administratively via the ndo_set_vf_mac command then deny
                 * permission to the VF to add or delete unicast MAC addresses.
                 * The VF may request to set the MAC address filter already
                 * assigned to it so do not return an error in that case.
                 */
                dev_err(&pf->pdev->dev,
                        "VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n");
                ret = -EPERM;
        }
        return ret;
}

/**
 * i40e_vc_add_mac_addr_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * add guest mac address filter
 **/
static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_ether_addr_list *al =
            (struct i40e_virtchnl_ether_addr_list *)msg;
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = NULL;
        u16 vsi_id = al->vsi_id;
        i40e_status ret = 0;
        int i;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
            !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                ret = I40E_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < al->num_elements; i++) {
                ret = i40e_check_vf_permission(vf, al->list[i].addr);
                if (ret)
                        goto error_param;
        }
        vsi = pf->vsi[vf->lan_vsi_idx];

        /* add new addresses to the list */
        for (i = 0; i < al->num_elements; i++) {
                struct i40e_mac_filter *f;

                f = i40e_find_mac(vsi, al->list[i].addr, true, false);
                if (!f) {
                        if (i40e_is_vsi_in_vlan(vsi))
                                f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
                                                         true, false);
                        else
                                f = i40e_add_filter(vsi, al->list[i].addr, -1,
                                                    true, false);
                }

                if (!f) {
                        dev_err(&pf->pdev->dev,
                                "Unable to add VF MAC filter\n");
                        ret = I40E_ERR_PARAM;
                        goto error_param;
                }
        }

        /* program the updated filter list */
        if (i40e_sync_vsi_filters(vsi))
                dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
                                       ret);
}

/**
 * i40e_vc_del_mac_addr_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * remove guest mac address filter
 **/
static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_ether_addr_list *al =
            (struct i40e_virtchnl_ether_addr_list *)msg;
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = NULL;
        u16 vsi_id = al->vsi_id;
        i40e_status ret = 0;
        int i;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
            !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                ret = I40E_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < al->num_elements; i++) {
                if (is_broadcast_ether_addr(al->list[i].addr) ||
                    is_zero_ether_addr(al->list[i].addr)) {
                        dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
                                al->list[i].addr);
                        ret = I40E_ERR_INVALID_MAC_ADDR;
                        goto error_param;
                }
        }
        vsi = pf->vsi[vf->lan_vsi_idx];

        /* delete addresses from the list */
        for (i = 0; i < al->num_elements; i++)
                i40e_del_filter(vsi, al->list[i].addr,
                                I40E_VLAN_ANY, true, false);

        /* program the updated filter list */
        if (i40e_sync_vsi_filters(vsi))
                dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
                                       ret);
}

/**
 * i40e_vc_add_vlan_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * program guest vlan id
 **/
static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_vlan_filter_list *vfl =
            (struct i40e_virtchnl_vlan_filter_list *)msg;
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = NULL;
        u16 vsi_id = vfl->vsi_id;
        i40e_status aq_ret = 0;
        int i;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
            !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < vfl->num_elements; i++) {
                if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
                        aq_ret = I40E_ERR_PARAM;
                        dev_err(&pf->pdev->dev,
                                "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
                        goto error_param;
                }
        }
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (vsi->info.pvid) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        i40e_vlan_stripping_enable(vsi);
        for (i = 0; i < vfl->num_elements; i++) {
                /* add new VLAN filter */
                int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
                if (ret)
                        dev_err(&pf->pdev->dev,
                                "Unable to add VF vlan filter %d, error %d\n",
                                vfl->vlan_id[i], ret);
        }

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
}

/**
 * i40e_vc_remove_vlan_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * remove programmed guest vlan id
 **/
static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
        struct i40e_virtchnl_vlan_filter_list *vfl =
            (struct i40e_virtchnl_vlan_filter_list *)msg;
        struct i40e_pf *pf = vf->pf;
        struct i40e_vsi *vsi = NULL;
        u16 vsi_id = vfl->vsi_id;
        i40e_status aq_ret = 0;
        int i;

        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
            !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < vfl->num_elements; i++) {
                if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
                        aq_ret = I40E_ERR_PARAM;
                        goto error_param;
                }
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (vsi->info.pvid) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < vfl->num_elements; i++) {
                int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
                if (ret)
                        dev_err(&pf->pdev->dev,
                                "Unable to delete VF vlan filter %d, error %d\n",
                                vfl->vlan_id[i], ret);
        }

error_param:
        /* send the response to the VF */
        return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
}

/**
 * i40e_vc_validate_vf_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 * @msghndl: msg handle
 *
 * validate msg
 **/
static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
                                   u32 v_retval, u8 *msg, u16 msglen)
{
        bool err_msg_format = false;
        int valid_len;

        /* Check if VF is disabled. */
        if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
                return I40E_ERR_PARAM;

        /* Validate message length. */
        switch (v_opcode) {
        case I40E_VIRTCHNL_OP_VERSION:
                valid_len = sizeof(struct i40e_virtchnl_version_info);
                break;
        case I40E_VIRTCHNL_OP_RESET_VF:
        case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
                valid_len = 0;
                break;
        case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
                valid_len = sizeof(struct i40e_virtchnl_txq_info);
                break;
        case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
                valid_len = sizeof(struct i40e_virtchnl_rxq_info);
                break;
        case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
                valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
                if (msglen >= valid_len) {
                        struct i40e_virtchnl_vsi_queue_config_info *vqc =
                            (struct i40e_virtchnl_vsi_queue_config_info *)msg;
                        valid_len += (vqc->num_queue_pairs *
                                      sizeof(struct
                                             i40e_virtchnl_queue_pair_info));
                        if (vqc->num_queue_pairs == 0)
                                err_msg_format = true;
                }
                break;
        case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
                valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
                if (msglen >= valid_len) {
                        struct i40e_virtchnl_irq_map_info *vimi =
                            (struct i40e_virtchnl_irq_map_info *)msg;
                        valid_len += (vimi->num_vectors *
                                      sizeof(struct i40e_virtchnl_vector_map));
                        if (vimi->num_vectors == 0)
                                err_msg_format = true;
                }
                break;
        case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
        case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
                valid_len = sizeof(struct i40e_virtchnl_queue_select);
                break;
        case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
        case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
                valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
                if (msglen >= valid_len) {
                        struct i40e_virtchnl_ether_addr_list *veal =
                            (struct i40e_virtchnl_ether_addr_list *)msg;
                        valid_len += veal->num_elements *
                            sizeof(struct i40e_virtchnl_ether_addr);
                        if (veal->num_elements == 0)
                                err_msg_format = true;
                }
                break;
        case I40E_VIRTCHNL_OP_ADD_VLAN:
        case I40E_VIRTCHNL_OP_DEL_VLAN:
                valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
                if (msglen >= valid_len) {
                        struct i40e_virtchnl_vlan_filter_list *vfl =
                            (struct i40e_virtchnl_vlan_filter_list *)msg;
                        valid_len += vfl->num_elements * sizeof(u16);
                        if (vfl->num_elements == 0)
                                err_msg_format = true;
                }
                break;
        case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
                valid_len = sizeof(struct i40e_virtchnl_promisc_info);
                break;
        case I40E_VIRTCHNL_OP_GET_STATS:
                valid_len = sizeof(struct i40e_virtchnl_queue_select);
                break;
        /* These are always errors coming from the VF. */
        case I40E_VIRTCHNL_OP_EVENT:
        case I40E_VIRTCHNL_OP_UNKNOWN:
        default:
                return -EPERM;
                break;
        }
        /* few more checks */
        if ((valid_len != msglen) || (err_msg_format)) {
                i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
                return -EINVAL;
        } else {
                return 0;
        }
}

/**
 * i40e_vc_process_vf_msg
 * @pf: pointer to the PF structure
 * @vf_id: source VF id
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 * @msghndl: msg handle
 *
 * called from the common aeq/arq handler to
 * process request from VF
 **/
int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode,
                           u32 v_retval, u8 *msg, u16 msglen)
{
        struct i40e_hw *hw = &pf->hw;
        unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
        struct i40e_vf *vf;
        int ret;

        pf->vf_aq_requests++;
        if (local_vf_id >= pf->num_alloc_vfs)
                return -EINVAL;
        vf = &(pf->vf[local_vf_id]);
        /* perform basic checks on the msg */
        ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);

        if (ret) {
                dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
                        local_vf_id, v_opcode, msglen);
                return ret;
        }

        switch (v_opcode) {
        case I40E_VIRTCHNL_OP_VERSION:
                ret = i40e_vc_get_version_msg(vf);
                break;
        case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
                ret = i40e_vc_get_vf_resources_msg(vf);
                break;
        case I40E_VIRTCHNL_OP_RESET_VF:
                i40e_vc_reset_vf_msg(vf);
                ret = 0;
                break;
        case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
                ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
                ret = i40e_vc_config_queues_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
                ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
                ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
                i40e_vc_notify_vf_link_state(vf);
                break;
        case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
                ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
                ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
                ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_ADD_VLAN:
                ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_DEL_VLAN:
                ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_GET_STATS:
                ret = i40e_vc_get_stats_msg(vf, msg, msglen);
                break;
        case I40E_VIRTCHNL_OP_UNKNOWN:
        default:
                dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
                        v_opcode, local_vf_id);
                ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
                                              I40E_ERR_NOT_IMPLEMENTED);
                break;
        }

        return ret;
}

/**
 * i40e_vc_process_vflr_event
 * @pf: pointer to the PF structure
 *
 * called from the vlfr irq handler to
 * free up VF resources and state variables
 **/
int i40e_vc_process_vflr_event(struct i40e_pf *pf)
{
        u32 reg, reg_idx, bit_idx, vf_id;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_vf *vf;

        if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
                return 0;

        /* re-enable vflr interrupt cause */
        reg = rd32(hw, I40E_PFINT_ICR0_ENA);
        reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
        wr32(hw, I40E_PFINT_ICR0_ENA, reg);
        i40e_flush(hw);

        clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
        for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
                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 */
                vf = &pf->vf[vf_id];
                reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
                if (reg & (1 << bit_idx)) {
                        /* clear the bit in GLGEN_VFLRSTAT */
                        wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));

                        if (!test_bit(__I40E_DOWN, &pf->state))
                                i40e_reset_vf(vf, true);
                }
        }

        return 0;
}

/**
 * i40e_ndo_set_vf_mac
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @mac: mac address
 *
 * program VF mac address
 **/
int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
{
        struct i40e_netdev_priv *np = netdev_priv(netdev);
        struct i40e_vsi *vsi = np->vsi;
        struct i40e_pf *pf = vsi->back;
        struct i40e_mac_filter *f;
        struct i40e_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev,
                        "Invalid VF Identifier %d\n", vf_id);
                ret = -EINVAL;
                goto error_param;
        }

        vf = &(pf->vf[vf_id]);
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
                dev_err(&pf->pdev->dev,
                        "Uninitialized VF %d\n", vf_id);
                ret = -EINVAL;
                goto error_param;
        }

        if (!is_valid_ether_addr(mac)) {
                dev_err(&pf->pdev->dev,
                        "Invalid VF ethernet address\n");
                ret = -EINVAL;
                goto error_param;
        }

        /* delete the temporary mac address */
        i40e_del_filter(vsi, vf->default_lan_addr.addr, vf->port_vlan_id,
                        true, false);

        /* Delete all the filters for this VSI - we're going to kill it
         * anyway.
         */
        list_for_each_entry(f, &vsi->mac_filter_list, list)
                i40e_del_filter(vsi, f->macaddr, f->vlan, true, false);

        dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
        /* program mac filter */
        if (i40e_sync_vsi_filters(vsi)) {
                dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
                ret = -EIO;
                goto error_param;
        }
        ether_addr_copy(vf->default_lan_addr.addr, mac);
        vf->pf_set_mac = true;
        /* Force the VF driver stop so it has to reload with new MAC address */
        i40e_vc_disable_vf(pf, vf);
        dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");

error_param:
        return ret;
}

/**
 * i40e_ndo_set_vf_port_vlan
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @vlan_id: mac address
 * @qos: priority setting
 *
 * program VF vlan id and/or qos
 **/
int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
                              int vf_id, u16 vlan_id, u8 qos)
{
        struct i40e_netdev_priv *np = netdev_priv(netdev);
        struct i40e_pf *pf = np->vsi->back;
        struct i40e_vsi *vsi;
        struct i40e_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
                ret = -EINVAL;
                goto error_pvid;
        }

        if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
                dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
                ret = -EINVAL;
                goto error_pvid;
        }

        vf = &(pf->vf[vf_id]);
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
                dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
                ret = -EINVAL;
                goto error_pvid;
        }

        if (vsi->info.pvid == 0 && i40e_is_vsi_in_vlan(vsi)) {
                dev_err(&pf->pdev->dev,
                        "VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
                        vf_id);
                /* Administrator Error - knock the VF offline until he does
                 * the right thing by reconfiguring his network correctly
                 * and then reloading the VF driver.
                 */
                i40e_vc_disable_vf(pf, vf);
        }

        /* Check for condition where there was already a port VLAN ID
         * filter set and now it is being deleted by setting it to zero.
         * Additionally check for the condition where there was a port
         * VLAN but now there is a new and different port VLAN being set.
         * Before deleting all the old VLAN filters we must add new ones
         * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
         * MAC addresses deleted.
         */
        if ((!(vlan_id || qos) ||
            (vlan_id | qos) != le16_to_cpu(vsi->info.pvid)) &&
            vsi->info.pvid)
                ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY);

        if (vsi->info.pvid) {
                /* kill old VLAN */
                ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
                                               VLAN_VID_MASK));
                if (ret) {
                        dev_info(&vsi->back->pdev->dev,
                                 "remove VLAN failed, ret=%d, aq_err=%d\n",
                                 ret, pf->hw.aq.asq_last_status);
                }
        }
        if (vlan_id || qos)
                ret = i40e_vsi_add_pvid(vsi,
                                vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT));
        else
                i40e_vsi_remove_pvid(vsi);

        if (vlan_id) {
                dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
                         vlan_id, qos, vf_id);

                /* add new VLAN filter */
                ret = i40e_vsi_add_vlan(vsi, vlan_id);
                if (ret) {
                        dev_info(&vsi->back->pdev->dev,
                                 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
                                 vsi->back->hw.aq.asq_last_status);
                        goto error_pvid;
                }
                /* Kill non-vlan MAC filters - ignore error return since
                 * there might not be any non-vlan MAC filters.
                 */
                i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY);
        }

        if (ret) {
                dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
                goto error_pvid;
        }
        /* The Port VLAN needs to be saved across resets the same as the
         * default LAN MAC address.
         */
        vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
        ret = 0;

error_pvid:
        return ret;
}

#define I40E_BW_CREDIT_DIVISOR 50     /* 50Mbps per BW credit */
#define I40E_MAX_BW_INACTIVE_ACCUM 4  /* device can accumulate 4 credits max */
/**
 * i40e_ndo_set_vf_bw
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @tx_rate: Tx rate
 *
 * configure VF Tx rate
 **/
int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
                       int max_tx_rate)
{
        struct i40e_netdev_priv *np = netdev_priv(netdev);
        struct i40e_pf *pf = np->vsi->back;
        struct i40e_vsi *vsi;
        struct i40e_vf *vf;
        int speed = 0;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
                ret = -EINVAL;
                goto error;
        }

        if (min_tx_rate) {
                dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
                        min_tx_rate, vf_id);
                return -EINVAL;
        }

        vf = &(pf->vf[vf_id]);
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
                dev_err(&pf->pdev->dev, "Uninitialized VF %d.\n", vf_id);
                ret = -EINVAL;
                goto error;
        }

        switch (pf->hw.phy.link_info.link_speed) {
        case I40E_LINK_SPEED_40GB:
                speed = 40000;
                break;
        case I40E_LINK_SPEED_10GB:
                speed = 10000;
                break;
        case I40E_LINK_SPEED_1GB:
                speed = 1000;
                break;
        default:
                break;
        }

        if (max_tx_rate > speed) {
                dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.",
                        max_tx_rate, vf->vf_id);
                ret = -EINVAL;
                goto error;
        }

        if ((max_tx_rate < 50) && (max_tx_rate > 0)) {
                dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n");
                max_tx_rate = 50;
        }

        /* Tx rate credits are in values of 50Mbps, 0 is disabled*/
        ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
                                          max_tx_rate / I40E_BW_CREDIT_DIVISOR,
                                          I40E_MAX_BW_INACTIVE_ACCUM, NULL);
        if (ret) {
                dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n",
                        ret);
                ret = -EIO;
                goto error;
        }
        vf->tx_rate = max_tx_rate;
error:
        return ret;
}

/**
 * i40e_ndo_get_vf_config
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @ivi: VF configuration structure
 *
 * return VF configuration
 **/
int i40e_ndo_get_vf_config(struct net_device *netdev,
                           int vf_id, struct ifla_vf_info *ivi)
{
        struct i40e_netdev_priv *np = netdev_priv(netdev);
        struct i40e_vsi *vsi = np->vsi;
        struct i40e_pf *pf = vsi->back;
        struct i40e_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
                ret = -EINVAL;
                goto error_param;
        }

        vf = &(pf->vf[vf_id]);
        /* first vsi is always the LAN vsi */
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
                dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
                ret = -EINVAL;
                goto error_param;
        }

        ivi->vf = vf_id;

        memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN);

        ivi->max_tx_rate = vf->tx_rate;
        ivi->min_tx_rate = 0;
        ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
        ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
                   I40E_VLAN_PRIORITY_SHIFT;
        if (vf->link_forced == false)
                ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
        else if (vf->link_up == true)
                ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
        else
                ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
        ivi->spoofchk = vf->spoofchk;
        ret = 0;

error_param:
        return ret;
}

/**
 * i40e_ndo_set_vf_link_state
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @link: required link state
 *
 * Set the link state of a specified VF, regardless of physical link state
 **/
int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
{
        struct i40e_netdev_priv *np = netdev_priv(netdev);
        struct i40e_pf *pf = np->vsi->back;
        struct i40e_virtchnl_pf_event pfe;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_vf *vf;
        int abs_vf_id;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
                ret = -EINVAL;
                goto error_out;
        }

        vf = &pf->vf[vf_id];
        abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

        pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
        pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;

        switch (link) {
        case IFLA_VF_LINK_STATE_AUTO:
                vf->link_forced = false;
                pfe.event_data.link_event.link_status =
                        pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
                pfe.event_data.link_event.link_speed =
                        pf->hw.phy.link_info.link_speed;
                break;
        case IFLA_VF_LINK_STATE_ENABLE:
                vf->link_forced = true;
                vf->link_up = true;
                pfe.event_data.link_event.link_status = true;
                pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
                break;
        case IFLA_VF_LINK_STATE_DISABLE:
                vf->link_forced = true;
                vf->link_up = false;
                pfe.event_data.link_event.link_status = false;
                pfe.event_data.link_event.link_speed = 0;
                break;
        default:
                ret = -EINVAL;
                goto error_out;
        }
        /* Notify the VF of its new link state */
        i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
                               0, (u8 *)&pfe, sizeof(pfe), NULL);

error_out:
        return ret;
}

/**
 * i40e_ndo_set_vf_spoofchk
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @enable: flag to enable or disable feature
 *
 * Enable or disable VF spoof checking
 **/
int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
{
        struct i40e_netdev_priv *np = netdev_priv(netdev);
        struct i40e_vsi *vsi = np->vsi;
        struct i40e_pf *pf = vsi->back;
        struct i40e_vsi_context ctxt;
        struct i40e_hw *hw = &pf->hw;
        struct i40e_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
                ret = -EINVAL;
                goto out;
        }

        vf = &(pf->vf[vf_id]);

        if (enable == vf->spoofchk)
                goto out;

        vf->spoofchk = enable;
        memset(&ctxt, 0, sizeof(ctxt));
        ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
        ctxt.pf_num = pf->hw.pf_id;
        ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
        if (enable)
                ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
                                        I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
        ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
        if (ret) {
                dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
                        ret);
                ret = -EIO;
        }
out:
        return ret;
}