/* bnx2x_sriov.c: Broadcom Everest network driver.
 *
 * Copyright 2009-2013 Broadcom Corporation
 *
 * Unless you and Broadcom execute a separate written software license
 * agreement governing use of this software, this software is licensed to you
 * under the terms of the GNU General Public License version 2, available
 * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
 *
 * Notwithstanding the above, under no circumstances may you combine this
 * software in any way with any other Broadcom software provided under a
 * license other than the GPL, without Broadcom's express prior written
 * consent.
 *
 * Maintained by: Ariel Elior <ariel.elior@qlogic.com>
 * Written by: Shmulik Ravid
 *             Ariel Elior <ariel.elior@qlogic.com>
 *
 */
#include "bnx2x.h"
#include "bnx2x_init.h"
#include "bnx2x_cmn.h"
#include "bnx2x_sp.h"
#include <linux/crc32.h>
#include <linux/if_vlan.h>

static int bnx2x_vf_op_prep(struct bnx2x *bp, int vfidx,
                            struct bnx2x_virtf **vf,
                            struct pf_vf_bulletin_content **bulletin,
                            bool test_queue);

/* General service functions */
static void storm_memset_vf_to_pf(struct bnx2x *bp, u16 abs_fid,
                                         u16 pf_id)
{
        REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_VF_TO_PF_OFFSET(abs_fid),
                pf_id);
        REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_VF_TO_PF_OFFSET(abs_fid),
                pf_id);
        REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_VF_TO_PF_OFFSET(abs_fid),
                pf_id);
        REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_VF_TO_PF_OFFSET(abs_fid),
                pf_id);
}

static void storm_memset_func_en(struct bnx2x *bp, u16 abs_fid,
                                        u8 enable)
{
        REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_FUNC_EN_OFFSET(abs_fid),
                enable);
        REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_FUNC_EN_OFFSET(abs_fid),
                enable);
        REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_FUNC_EN_OFFSET(abs_fid),
                enable);
        REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_FUNC_EN_OFFSET(abs_fid),
                enable);
}

int bnx2x_vf_idx_by_abs_fid(struct bnx2x *bp, u16 abs_vfid)
{
        int idx;

        for_each_vf(bp, idx)
                if (bnx2x_vf(bp, idx, abs_vfid) == abs_vfid)
                        break;
        return idx;
}

static
struct bnx2x_virtf *bnx2x_vf_by_abs_fid(struct bnx2x *bp, u16 abs_vfid)
{
        u16 idx =  (u16)bnx2x_vf_idx_by_abs_fid(bp, abs_vfid);
        return (idx < BNX2X_NR_VIRTFN(bp)) ? BP_VF(bp, idx) : NULL;
}

static void bnx2x_vf_igu_ack_sb(struct bnx2x *bp, struct bnx2x_virtf *vf,
                                u8 igu_sb_id, u8 segment, u16 index, u8 op,
                                u8 update)
{
        /* acking a VF sb through the PF - use the GRC */
        u32 ctl;
        u32 igu_addr_data = IGU_REG_COMMAND_REG_32LSB_DATA;
        u32 igu_addr_ctl = IGU_REG_COMMAND_REG_CTRL;
        u32 func_encode = vf->abs_vfid;
        u32 addr_encode = IGU_CMD_E2_PROD_UPD_BASE + igu_sb_id;
        struct igu_regular cmd_data = {0};

        cmd_data.sb_id_and_flags =
                        ((index << IGU_REGULAR_SB_INDEX_SHIFT) |
                         (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
                         (update << IGU_REGULAR_BUPDATE_SHIFT) |
                         (op << IGU_REGULAR_ENABLE_INT_SHIFT));

        ctl = addr_encode << IGU_CTRL_REG_ADDRESS_SHIFT         |
              func_encode << IGU_CTRL_REG_FID_SHIFT             |
              IGU_CTRL_CMD_TYPE_WR << IGU_CTRL_REG_TYPE_SHIFT;

        DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
           cmd_data.sb_id_and_flags, igu_addr_data);
        REG_WR(bp, igu_addr_data, cmd_data.sb_id_and_flags);
        mmiowb();
        barrier();

        DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
           ctl, igu_addr_ctl);
        REG_WR(bp, igu_addr_ctl, ctl);
        mmiowb();
        barrier();
}

static bool bnx2x_validate_vf_sp_objs(struct bnx2x *bp,
                                       struct bnx2x_virtf *vf,
                                       bool print_err)
{
        if (!bnx2x_leading_vfq(vf, sp_initialized)) {
                if (print_err)
                        BNX2X_ERR("Slowpath objects not yet initialized!\n");
                else
                        DP(BNX2X_MSG_IOV, "Slowpath objects not yet initialized!\n");
                return false;
        }
        return true;
}

/* VFOP operations states */
void bnx2x_vfop_qctor_dump_tx(struct bnx2x *bp, struct bnx2x_virtf *vf,
                              struct bnx2x_queue_init_params *init_params,
                              struct bnx2x_queue_setup_params *setup_params,
                              u16 q_idx, u16 sb_idx)
{
        DP(BNX2X_MSG_IOV,
           "VF[%d] Q_SETUP: txq[%d]-- vfsb=%d, sb-index=%d, hc-rate=%d, flags=0x%lx, traffic-type=%d",
           vf->abs_vfid,
           q_idx,
           sb_idx,
           init_params->tx.sb_cq_index,
           init_params->tx.hc_rate,
           setup_params->flags,
           setup_params->txq_params.traffic_type);
}

void bnx2x_vfop_qctor_dump_rx(struct bnx2x *bp, struct bnx2x_virtf *vf,
                            struct bnx2x_queue_init_params *init_params,
                            struct bnx2x_queue_setup_params *setup_params,
                            u16 q_idx, u16 sb_idx)
{
        struct bnx2x_rxq_setup_params *rxq_params = &setup_params->rxq_params;

        DP(BNX2X_MSG_IOV, "VF[%d] Q_SETUP: rxq[%d]-- vfsb=%d, sb-index=%d, hc-rate=%d, mtu=%d, buf-size=%d\n"
           "sge-size=%d, max_sge_pkt=%d, tpa-agg-size=%d, flags=0x%lx, drop-flags=0x%x, cache-log=%d\n",
           vf->abs_vfid,
           q_idx,
           sb_idx,
           init_params->rx.sb_cq_index,
           init_params->rx.hc_rate,
           setup_params->gen_params.mtu,
           rxq_params->buf_sz,
           rxq_params->sge_buf_sz,
           rxq_params->max_sges_pkt,
           rxq_params->tpa_agg_sz,
           setup_params->flags,
           rxq_params->drop_flags,
           rxq_params->cache_line_log);
}

void bnx2x_vfop_qctor_prep(struct bnx2x *bp,
                           struct bnx2x_virtf *vf,
                           struct bnx2x_vf_queue *q,
                           struct bnx2x_vf_queue_construct_params *p,
                           unsigned long q_type)
{
        struct bnx2x_queue_init_params *init_p = &p->qstate.params.init;
        struct bnx2x_queue_setup_params *setup_p = &p->prep_qsetup;

        /* INIT */

        /* Enable host coalescing in the transition to INIT state */
        if (test_bit(BNX2X_Q_FLG_HC, &init_p->rx.flags))
                __set_bit(BNX2X_Q_FLG_HC_EN, &init_p->rx.flags);

        if (test_bit(BNX2X_Q_FLG_HC, &init_p->tx.flags))
                __set_bit(BNX2X_Q_FLG_HC_EN, &init_p->tx.flags);

        /* FW SB ID */
        init_p->rx.fw_sb_id = vf_igu_sb(vf, q->sb_idx);
        init_p->tx.fw_sb_id = vf_igu_sb(vf, q->sb_idx);

        /* context */
        init_p->cxts[0] = q->cxt;

        /* SETUP */

        /* Setup-op general parameters */
        setup_p->gen_params.spcl_id = vf->sp_cl_id;
        setup_p->gen_params.stat_id = vfq_stat_id(vf, q);
        setup_p->gen_params.fp_hsi = vf->fp_hsi;

        /* Setup-op pause params:
         * Nothing to do, the pause thresholds are set by default to 0 which
         * effectively turns off the feature for this queue. We don't want
         * one queue (VF) to interfering with another queue (another VF)
         */
        if (vf->cfg_flags & VF_CFG_FW_FC)
                BNX2X_ERR("No support for pause to VFs (abs_vfid: %d)\n",
                          vf->abs_vfid);
        /* Setup-op flags:
         * collect statistics, zero statistics, local-switching, security,
         * OV for Flex10, RSS and MCAST for leading
         */
        if (test_bit(BNX2X_Q_FLG_STATS, &setup_p->flags))
                __set_bit(BNX2X_Q_FLG_ZERO_STATS, &setup_p->flags);

        /* for VFs, enable tx switching, bd coherency, and mac address
         * anti-spoofing
         */
        __set_bit(BNX2X_Q_FLG_TX_SWITCH, &setup_p->flags);
        __set_bit(BNX2X_Q_FLG_TX_SEC, &setup_p->flags);
        __set_bit(BNX2X_Q_FLG_ANTI_SPOOF, &setup_p->flags);

        /* Setup-op rx parameters */
        if (test_bit(BNX2X_Q_TYPE_HAS_RX, &q_type)) {
                struct bnx2x_rxq_setup_params *rxq_p = &setup_p->rxq_params;

                rxq_p->cl_qzone_id = vfq_qzone_id(vf, q);
                rxq_p->fw_sb_id = vf_igu_sb(vf, q->sb_idx);
                rxq_p->rss_engine_id = FW_VF_HANDLE(vf->abs_vfid);

                if (test_bit(BNX2X_Q_FLG_TPA, &setup_p->flags))
                        rxq_p->max_tpa_queues = BNX2X_VF_MAX_TPA_AGG_QUEUES;
        }

        /* Setup-op tx parameters */
        if (test_bit(BNX2X_Q_TYPE_HAS_TX, &q_type)) {
                setup_p->txq_params.tss_leading_cl_id = vf->leading_rss;
                setup_p->txq_params.fw_sb_id = vf_igu_sb(vf, q->sb_idx);
        }
}

static int bnx2x_vf_queue_create(struct bnx2x *bp,
                                 struct bnx2x_virtf *vf, int qid,
                                 struct bnx2x_vf_queue_construct_params *qctor)
{
        struct bnx2x_queue_state_params *q_params;
        int rc = 0;

        DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);

        /* Prepare ramrod information */
        q_params = &qctor->qstate;
        q_params->q_obj = &bnx2x_vfq(vf, qid, sp_obj);
        set_bit(RAMROD_COMP_WAIT, &q_params->ramrod_flags);

        if (bnx2x_get_q_logical_state(bp, q_params->q_obj) ==
            BNX2X_Q_LOGICAL_STATE_ACTIVE) {
                DP(BNX2X_MSG_IOV, "queue was already up. Aborting gracefully\n");
                goto out;
        }

        /* Run Queue 'construction' ramrods */
        q_params->cmd = BNX2X_Q_CMD_INIT;
        rc = bnx2x_queue_state_change(bp, q_params);
        if (rc)
                goto out;

        memcpy(&q_params->params.setup, &qctor->prep_qsetup,
               sizeof(struct bnx2x_queue_setup_params));
        q_params->cmd = BNX2X_Q_CMD_SETUP;
        rc = bnx2x_queue_state_change(bp, q_params);
        if (rc)
                goto out;

        /* enable interrupts */
        bnx2x_vf_igu_ack_sb(bp, vf, vf_igu_sb(vf, bnx2x_vfq(vf, qid, sb_idx)),
                            USTORM_ID, 0, IGU_INT_ENABLE, 0);
out:
        return rc;
}

static int bnx2x_vf_queue_destroy(struct bnx2x *bp, struct bnx2x_virtf *vf,
                                  int qid)
{
        enum bnx2x_queue_cmd cmds[] = {BNX2X_Q_CMD_HALT,
                                       BNX2X_Q_CMD_TERMINATE,
                                       BNX2X_Q_CMD_CFC_DEL};
        struct bnx2x_queue_state_params q_params;
        int rc, i;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        /* Prepare ramrod information */
        memset(&q_params, 0, sizeof(struct bnx2x_queue_state_params));
        q_params.q_obj = &bnx2x_vfq(vf, qid, sp_obj);
        set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);

        if (bnx2x_get_q_logical_state(bp, q_params.q_obj) ==
            BNX2X_Q_LOGICAL_STATE_STOPPED) {
                DP(BNX2X_MSG_IOV, "queue was already stopped. Aborting gracefully\n");
                goto out;
        }

        /* Run Queue 'destruction' ramrods */
        for (i = 0; i < ARRAY_SIZE(cmds); i++) {
                q_params.cmd = cmds[i];
                rc = bnx2x_queue_state_change(bp, &q_params);
                if (rc) {
                        BNX2X_ERR("Failed to run Queue command %d\n", cmds[i]);
                        return rc;
                }
        }
out:
        /* Clean Context */
        if (bnx2x_vfq(vf, qid, cxt)) {
                bnx2x_vfq(vf, qid, cxt)->ustorm_ag_context.cdu_usage = 0;
                bnx2x_vfq(vf, qid, cxt)->xstorm_ag_context.cdu_reserved = 0;
        }

        return 0;
}

static void
bnx2x_vf_set_igu_info(struct bnx2x *bp, u8 igu_sb_id, u8 abs_vfid)
{
        struct bnx2x_virtf *vf = bnx2x_vf_by_abs_fid(bp, abs_vfid);
        if (vf) {
                /* the first igu entry belonging to VFs of this PF */
                if (!BP_VFDB(bp)->first_vf_igu_entry)
                        BP_VFDB(bp)->first_vf_igu_entry = igu_sb_id;

                /* the first igu entry belonging to this VF */
                if (!vf_sb_count(vf))
                        vf->igu_base_id = igu_sb_id;

                ++vf_sb_count(vf);
                ++vf->sb_count;
        }
        BP_VFDB(bp)->vf_sbs_pool++;
}

static inline void bnx2x_vf_vlan_credit(struct bnx2x *bp,
                                        struct bnx2x_vlan_mac_obj *obj,
                                        atomic_t *counter)
{
        struct list_head *pos;
        int read_lock;
        int cnt = 0;

        read_lock = bnx2x_vlan_mac_h_read_lock(bp, obj);
        if (read_lock)
                DP(BNX2X_MSG_SP, "Failed to take vlan mac read head; continuing anyway\n");

        list_for_each(pos, &obj->head)
                cnt++;

        if (!read_lock)
                bnx2x_vlan_mac_h_read_unlock(bp, obj);

        atomic_set(counter, cnt);
}

static int bnx2x_vf_vlan_mac_clear(struct bnx2x *bp, struct bnx2x_virtf *vf,
                                   int qid, bool drv_only, bool mac)
{
        struct bnx2x_vlan_mac_ramrod_params ramrod;
        int rc;

        DP(BNX2X_MSG_IOV, "vf[%d] - deleting all %s\n", vf->abs_vfid,
           mac ? "MACs" : "VLANs");

        /* Prepare ramrod params */
        memset(&ramrod, 0, sizeof(struct bnx2x_vlan_mac_ramrod_params));
        if (mac) {
                set_bit(BNX2X_ETH_MAC, &ramrod.user_req.vlan_mac_flags);
                ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, mac_obj);
        } else {
                set_bit(BNX2X_DONT_CONSUME_CAM_CREDIT,
                        &ramrod.user_req.vlan_mac_flags);
                ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, vlan_obj);
        }
        ramrod.user_req.cmd = BNX2X_VLAN_MAC_DEL;

        set_bit(RAMROD_EXEC, &ramrod.ramrod_flags);
        if (drv_only)
                set_bit(RAMROD_DRV_CLR_ONLY, &ramrod.ramrod_flags);
        else
                set_bit(RAMROD_COMP_WAIT, &ramrod.ramrod_flags);

        /* Start deleting */
        rc = ramrod.vlan_mac_obj->delete_all(bp,
                                             ramrod.vlan_mac_obj,
                                             &ramrod.user_req.vlan_mac_flags,
                                             &ramrod.ramrod_flags);
        if (rc) {
                BNX2X_ERR("Failed to delete all %s\n",
                          mac ? "MACs" : "VLANs");
                return rc;
        }

        /* Clear the vlan counters */
        if (!mac)
                atomic_set(&bnx2x_vfq(vf, qid, vlan_count), 0);

        return 0;
}

static int bnx2x_vf_mac_vlan_config(struct bnx2x *bp,
                                    struct bnx2x_virtf *vf, int qid,
                                    struct bnx2x_vf_mac_vlan_filter *filter,
                                    bool drv_only)
{
        struct bnx2x_vlan_mac_ramrod_params ramrod;
        int rc;

        DP(BNX2X_MSG_IOV, "vf[%d] - %s a %s filter\n",
           vf->abs_vfid, filter->add ? "Adding" : "Deleting",
           filter->type == BNX2X_VF_FILTER_MAC ? "MAC" : "VLAN");

        /* Prepare ramrod params */
        memset(&ramrod, 0, sizeof(struct bnx2x_vlan_mac_ramrod_params));
        if (filter->type == BNX2X_VF_FILTER_VLAN) {
                set_bit(BNX2X_DONT_CONSUME_CAM_CREDIT,
                        &ramrod.user_req.vlan_mac_flags);
                ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, vlan_obj);
                ramrod.user_req.u.vlan.vlan = filter->vid;
        } else {
                set_bit(BNX2X_ETH_MAC, &ramrod.user_req.vlan_mac_flags);
                ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, mac_obj);
                memcpy(&ramrod.user_req.u.mac.mac, filter->mac, ETH_ALEN);
        }
        ramrod.user_req.cmd = filter->add ? BNX2X_VLAN_MAC_ADD :
                                            BNX2X_VLAN_MAC_DEL;

        /* Verify there are available vlan credits */
        if (filter->add && filter->type == BNX2X_VF_FILTER_VLAN &&
            (atomic_read(&bnx2x_vfq(vf, qid, vlan_count)) >=
             vf_vlan_rules_cnt(vf))) {
                BNX2X_ERR("No credits for vlan [%d >= %d]\n",
                          atomic_read(&bnx2x_vfq(vf, qid, vlan_count)),
                          vf_vlan_rules_cnt(vf));
                return -ENOMEM;
        }

        set_bit(RAMROD_EXEC, &ramrod.ramrod_flags);
        if (drv_only)
                set_bit(RAMROD_DRV_CLR_ONLY, &ramrod.ramrod_flags);
        else
                set_bit(RAMROD_COMP_WAIT, &ramrod.ramrod_flags);

        /* Add/Remove the filter */
        rc = bnx2x_config_vlan_mac(bp, &ramrod);
        if (rc && rc != -EEXIST) {
                BNX2X_ERR("Failed to %s %s\n",
                          filter->add ? "add" : "delete",
                          filter->type == BNX2X_VF_FILTER_MAC ? "MAC" :
                                                                "VLAN");
                return rc;
        }

        /* Update the vlan counters */
        if (filter->type == BNX2X_VF_FILTER_VLAN)
                bnx2x_vf_vlan_credit(bp, ramrod.vlan_mac_obj,
                                     &bnx2x_vfq(vf, qid, vlan_count));

        return 0;
}

int bnx2x_vf_mac_vlan_config_list(struct bnx2x *bp, struct bnx2x_virtf *vf,
                                  struct bnx2x_vf_mac_vlan_filters *filters,
                                  int qid, bool drv_only)
{
        int rc = 0, i;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        if (!bnx2x_validate_vf_sp_objs(bp, vf, true))
                return -EINVAL;

        /* Prepare ramrod params */
        for (i = 0; i < filters->count; i++) {
                rc = bnx2x_vf_mac_vlan_config(bp, vf, qid,
                                              &filters->filters[i], drv_only);
                if (rc)
                        break;
        }

        /* Rollback if needed */
        if (i != filters->count) {
                BNX2X_ERR("Managed only %d/%d filters - rolling back\n",
                          i, filters->count + 1);
                while (--i >= 0) {
                        filters->filters[i].add = !filters->filters[i].add;
                        bnx2x_vf_mac_vlan_config(bp, vf, qid,
                                                 &filters->filters[i],
                                                 drv_only);
                }
        }

        /* It's our responsibility to free the filters */
        kfree(filters);

        return rc;
}

int bnx2x_vf_queue_setup(struct bnx2x *bp, struct bnx2x_virtf *vf, int qid,
                         struct bnx2x_vf_queue_construct_params *qctor)
{
        int rc;

        DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);

        rc = bnx2x_vf_queue_create(bp, vf, qid, qctor);
        if (rc)
                goto op_err;

        /* Configure vlan0 for leading queue */
        if (!qid) {
                struct bnx2x_vf_mac_vlan_filter filter;

                memset(&filter, 0, sizeof(struct bnx2x_vf_mac_vlan_filter));
                filter.type = BNX2X_VF_FILTER_VLAN;
                filter.add = true;
                filter.vid = 0;
                rc = bnx2x_vf_mac_vlan_config(bp, vf, qid, &filter, false);
                if (rc)
                        goto op_err;
        }

        /* Schedule the configuration of any pending vlan filters */
        vf->cfg_flags |= VF_CFG_VLAN;
        bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_HYPERVISOR_VLAN,
                               BNX2X_MSG_IOV);
        return 0;
op_err:
        BNX2X_ERR("QSETUP[%d:%d] error: rc %d\n", vf->abs_vfid, qid, rc);
        return rc;
}

static int bnx2x_vf_queue_flr(struct bnx2x *bp, struct bnx2x_virtf *vf,
                               int qid)
{
        int rc;

        DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);

        /* If needed, clean the filtering data base */
        if ((qid == LEADING_IDX) &&
            bnx2x_validate_vf_sp_objs(bp, vf, false)) {
                rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid, true, false);
                if (rc)
                        goto op_err;
                rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid, true, true);
                if (rc)
                        goto op_err;
        }

        /* Terminate queue */
        if (bnx2x_vfq(vf, qid, sp_obj).state != BNX2X_Q_STATE_RESET) {
                struct bnx2x_queue_state_params qstate;

                memset(&qstate, 0, sizeof(struct bnx2x_queue_state_params));
                qstate.q_obj = &bnx2x_vfq(vf, qid, sp_obj);
                qstate.q_obj->state = BNX2X_Q_STATE_STOPPED;
                qstate.cmd = BNX2X_Q_CMD_TERMINATE;
                set_bit(RAMROD_COMP_WAIT, &qstate.ramrod_flags);
                rc = bnx2x_queue_state_change(bp, &qstate);
                if (rc)
                        goto op_err;
        }

        return 0;
op_err:
        BNX2X_ERR("vf[%d:%d] error: rc %d\n", vf->abs_vfid, qid, rc);
        return rc;
}

int bnx2x_vf_mcast(struct bnx2x *bp, struct bnx2x_virtf *vf,
                   bnx2x_mac_addr_t *mcasts, int mc_num, bool drv_only)
{
        struct bnx2x_mcast_list_elem *mc = NULL;
        struct bnx2x_mcast_ramrod_params mcast;
        int rc, i;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        /* Prepare Multicast command */
        memset(&mcast, 0, sizeof(struct bnx2x_mcast_ramrod_params));
        mcast.mcast_obj = &vf->mcast_obj;
        if (drv_only)
                set_bit(RAMROD_DRV_CLR_ONLY, &mcast.ramrod_flags);
        else
                set_bit(RAMROD_COMP_WAIT, &mcast.ramrod_flags);
        if (mc_num) {
                mc = kzalloc(mc_num * sizeof(struct bnx2x_mcast_list_elem),
                             GFP_KERNEL);
                if (!mc) {
                        BNX2X_ERR("Cannot Configure multicasts due to lack of memory\n");
                        return -ENOMEM;
                }
        }

        /* clear existing mcasts */
        mcast.mcast_list_len = vf->mcast_list_len;
        vf->mcast_list_len = mc_num;
        rc = bnx2x_config_mcast(bp, &mcast, BNX2X_MCAST_CMD_DEL);
        if (rc) {
                BNX2X_ERR("Failed to remove multicasts\n");
                kfree(mc);
                return rc;
        }

        /* update mcast list on the ramrod params */
        if (mc_num) {
                INIT_LIST_HEAD(&mcast.mcast_list);
                for (i = 0; i < mc_num; i++) {
                        mc[i].mac = mcasts[i];
                        list_add_tail(&mc[i].link,
                                      &mcast.mcast_list);
                }

                /* add new mcasts */
                mcast.mcast_list_len = mc_num;
                rc = bnx2x_config_mcast(bp, &mcast, BNX2X_MCAST_CMD_ADD);
                if (rc)
                        BNX2X_ERR("Faled to add multicasts\n");
                kfree(mc);
        }

        return rc;
}

static void bnx2x_vf_prep_rx_mode(struct bnx2x *bp, u8 qid,
                                  struct bnx2x_rx_mode_ramrod_params *ramrod,
                                  struct bnx2x_virtf *vf,
                                  unsigned long accept_flags)
{
        struct bnx2x_vf_queue *vfq = vfq_get(vf, qid);

        memset(ramrod, 0, sizeof(*ramrod));
        ramrod->cid = vfq->cid;
        ramrod->cl_id = vfq_cl_id(vf, vfq);
        ramrod->rx_mode_obj = &bp->rx_mode_obj;
        ramrod->func_id = FW_VF_HANDLE(vf->abs_vfid);
        ramrod->rx_accept_flags = accept_flags;
        ramrod->tx_accept_flags = accept_flags;
        ramrod->pstate = &vf->filter_state;
        ramrod->state = BNX2X_FILTER_RX_MODE_PENDING;

        set_bit(BNX2X_FILTER_RX_MODE_PENDING, &vf->filter_state);
        set_bit(RAMROD_RX, &ramrod->ramrod_flags);
        set_bit(RAMROD_TX, &ramrod->ramrod_flags);

        ramrod->rdata = bnx2x_vf_sp(bp, vf, rx_mode_rdata.e2);
        ramrod->rdata_mapping = bnx2x_vf_sp_map(bp, vf, rx_mode_rdata.e2);
}

int bnx2x_vf_rxmode(struct bnx2x *bp, struct bnx2x_virtf *vf,
                    int qid, unsigned long accept_flags)
{
        struct bnx2x_rx_mode_ramrod_params ramrod;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        bnx2x_vf_prep_rx_mode(bp, qid, &ramrod, vf, accept_flags);
        set_bit(RAMROD_COMP_WAIT, &ramrod.ramrod_flags);
        vfq_get(vf, qid)->accept_flags = ramrod.rx_accept_flags;
        return bnx2x_config_rx_mode(bp, &ramrod);
}

int bnx2x_vf_queue_teardown(struct bnx2x *bp, struct bnx2x_virtf *vf, int qid)
{
        int rc;

        DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);

        /* Remove all classification configuration for leading queue */
        if (qid == LEADING_IDX) {
                rc = bnx2x_vf_rxmode(bp, vf, qid, 0);
                if (rc)
                        goto op_err;

                /* Remove filtering if feasible */
                if (bnx2x_validate_vf_sp_objs(bp, vf, true)) {
                        rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid,
                                                     false, false);
                        if (rc)
                                goto op_err;
                        rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid,
                                                     false, true);
                        if (rc)
                                goto op_err;
                        rc = bnx2x_vf_mcast(bp, vf, NULL, 0, false);
                        if (rc)
                                goto op_err;
                }
        }

        /* Destroy queue */
        rc = bnx2x_vf_queue_destroy(bp, vf, qid);
        if (rc)
                goto op_err;
        return rc;
op_err:
        BNX2X_ERR("vf[%d:%d] error: rc %d\n",
                  vf->abs_vfid, qid, rc);
        return rc;
}

/* VF enable primitives
 * when pretend is required the caller is responsible
 * for calling pretend prior to calling these routines
 */

/* internal vf enable - until vf is enabled internally all transactions
 * are blocked. This routine should always be called last with pretend.
 */
static void bnx2x_vf_enable_internal(struct bnx2x *bp, u8 enable)
{
        REG_WR(bp, PGLUE_B_REG_INTERNAL_VFID_ENABLE, enable ? 1 : 0);
}

/* clears vf error in all semi blocks */
static void bnx2x_vf_semi_clear_err(struct bnx2x *bp, u8 abs_vfid)
{
        REG_WR(bp, TSEM_REG_VFPF_ERR_NUM, abs_vfid);
        REG_WR(bp, USEM_REG_VFPF_ERR_NUM, abs_vfid);
        REG_WR(bp, CSEM_REG_VFPF_ERR_NUM, abs_vfid);
        REG_WR(bp, XSEM_REG_VFPF_ERR_NUM, abs_vfid);
}

static void bnx2x_vf_pglue_clear_err(struct bnx2x *bp, u8 abs_vfid)
{
        u32 was_err_group = (2 * BP_PATH(bp) + abs_vfid) >> 5;
        u32 was_err_reg = 0;

        switch (was_err_group) {
        case 0:
            was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_31_0_CLR;
            break;
        case 1:
            was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_63_32_CLR;
            break;
        case 2:
            was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_95_64_CLR;
            break;
        case 3:
            was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_127_96_CLR;
            break;
        }
        REG_WR(bp, was_err_reg, 1 << (abs_vfid & 0x1f));
}

static void bnx2x_vf_igu_reset(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        int i;
        u32 val;

        /* Set VF masks and configuration - pretend */
        bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));

        REG_WR(bp, IGU_REG_SB_INT_BEFORE_MASK_LSB, 0);
        REG_WR(bp, IGU_REG_SB_INT_BEFORE_MASK_MSB, 0);
        REG_WR(bp, IGU_REG_SB_MASK_LSB, 0);
        REG_WR(bp, IGU_REG_SB_MASK_MSB, 0);
        REG_WR(bp, IGU_REG_PBA_STATUS_LSB, 0);
        REG_WR(bp, IGU_REG_PBA_STATUS_MSB, 0);

        val = REG_RD(bp, IGU_REG_VF_CONFIGURATION);
        val |= (IGU_VF_CONF_FUNC_EN | IGU_VF_CONF_MSI_MSIX_EN);
        if (vf->cfg_flags & VF_CFG_INT_SIMD)
                val |= IGU_VF_CONF_SINGLE_ISR_EN;
        val &= ~IGU_VF_CONF_PARENT_MASK;
        val |= (BP_ABS_FUNC(bp) >> 1) << IGU_VF_CONF_PARENT_SHIFT;
        REG_WR(bp, IGU_REG_VF_CONFIGURATION, val);

        DP(BNX2X_MSG_IOV,
           "value in IGU_REG_VF_CONFIGURATION of vf %d after write is 0x%08x\n",
           vf->abs_vfid, val);

        bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));

        /* iterate over all queues, clear sb consumer */
        for (i = 0; i < vf_sb_count(vf); i++) {
                u8 igu_sb_id = vf_igu_sb(vf, i);

                /* zero prod memory */
                REG_WR(bp, IGU_REG_PROD_CONS_MEMORY + igu_sb_id * 4, 0);

                /* clear sb state machine */
                bnx2x_igu_clear_sb_gen(bp, vf->abs_vfid, igu_sb_id,
                                       false /* VF */);

                /* disable + update */
                bnx2x_vf_igu_ack_sb(bp, vf, igu_sb_id, USTORM_ID, 0,
                                    IGU_INT_DISABLE, 1);
        }
}

void bnx2x_vf_enable_access(struct bnx2x *bp, u8 abs_vfid)
{
        /* set the VF-PF association in the FW */
        storm_memset_vf_to_pf(bp, FW_VF_HANDLE(abs_vfid), BP_FUNC(bp));
        storm_memset_func_en(bp, FW_VF_HANDLE(abs_vfid), 1);

        /* clear vf errors*/
        bnx2x_vf_semi_clear_err(bp, abs_vfid);
        bnx2x_vf_pglue_clear_err(bp, abs_vfid);

        /* internal vf-enable - pretend */
        bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, abs_vfid));
        DP(BNX2X_MSG_IOV, "enabling internal access for vf %x\n", abs_vfid);
        bnx2x_vf_enable_internal(bp, true);
        bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}

static void bnx2x_vf_enable_traffic(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        /* Reset vf in IGU  interrupts are still disabled */
        bnx2x_vf_igu_reset(bp, vf);

        /* pretend to enable the vf with the PBF */
        bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
        REG_WR(bp, PBF_REG_DISABLE_VF, 0);
        bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}

static u8 bnx2x_vf_is_pcie_pending(struct bnx2x *bp, u8 abs_vfid)
{
        struct pci_dev *dev;
        struct bnx2x_virtf *vf = bnx2x_vf_by_abs_fid(bp, abs_vfid);

        if (!vf)
                return false;

        dev = pci_get_bus_and_slot(vf->bus, vf->devfn);
        if (dev)
                return bnx2x_is_pcie_pending(dev);
        return false;
}

int bnx2x_vf_flr_clnup_epilog(struct bnx2x *bp, u8 abs_vfid)
{
        /* Verify no pending pci transactions */
        if (bnx2x_vf_is_pcie_pending(bp, abs_vfid))
                BNX2X_ERR("PCIE Transactions still pending\n");

        return 0;
}

static void bnx2x_iov_re_set_vlan_filters(struct bnx2x *bp,
                                          struct bnx2x_virtf *vf,
                                          int new)
{
        int num = vf_vlan_rules_cnt(vf);
        int diff = new - num;
        bool rc = true;

        DP(BNX2X_MSG_IOV, "vf[%d] - %d vlan filter credits [previously %d]\n",
           vf->abs_vfid, new, num);

        if (diff > 0)
                rc = bp->vlans_pool.get(&bp->vlans_pool, diff);
        else if (diff < 0)
                rc = bp->vlans_pool.put(&bp->vlans_pool, -diff);

        if (rc)
                vf_vlan_rules_cnt(vf) = new;
        else
                DP(BNX2X_MSG_IOV, "vf[%d] - Failed to configure vlan filter credits change\n",
                   vf->abs_vfid);
}

/* must be called after the number of PF queues and the number of VFs are
 * both known
 */
static void
bnx2x_iov_static_resc(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        struct vf_pf_resc_request *resc = &vf->alloc_resc;
        u16 vlan_count = 0;

        /* will be set only during VF-ACQUIRE */
        resc->num_rxqs = 0;
        resc->num_txqs = 0;

        /* no credit calculations for macs (just yet) */
        resc->num_mac_filters = 1;

        /* divvy up vlan rules */
        bnx2x_iov_re_set_vlan_filters(bp, vf, 0);
        vlan_count = bp->vlans_pool.check(&bp->vlans_pool);
        vlan_count = 1 << ilog2(vlan_count);
        bnx2x_iov_re_set_vlan_filters(bp, vf,
                                      vlan_count / BNX2X_NR_VIRTFN(bp));

        /* no real limitation */
        resc->num_mc_filters = 0;

        /* num_sbs already set */
        resc->num_sbs = vf->sb_count;
}

/* FLR routines: */
static void bnx2x_vf_free_resc(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        /* reset the state variables */
        bnx2x_iov_static_resc(bp, vf);
        vf->state = VF_FREE;
}

static void bnx2x_vf_flr_clnup_hw(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        u32 poll_cnt = bnx2x_flr_clnup_poll_count(bp);

        /* DQ usage counter */
        bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
        bnx2x_flr_clnup_poll_hw_counter(bp, DORQ_REG_VF_USAGE_CNT,
                                        "DQ VF usage counter timed out",
                                        poll_cnt);
        bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));

        /* FW cleanup command - poll for the results */
        if (bnx2x_send_final_clnup(bp, (u8)FW_VF_HANDLE(vf->abs_vfid),
                                   poll_cnt))
                BNX2X_ERR("VF[%d] Final cleanup timed-out\n", vf->abs_vfid);

        /* verify TX hw is flushed */
        bnx2x_tx_hw_flushed(bp, poll_cnt);
}

static void bnx2x_vf_flr(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        int rc, i;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        /* the cleanup operations are valid if and only if the VF
         * was first acquired.
         */
        for (i = 0; i < vf_rxq_count(vf); i++) {
                rc = bnx2x_vf_queue_flr(bp, vf, i);
                if (rc)
                        goto out;
        }

        /* remove multicasts */
        bnx2x_vf_mcast(bp, vf, NULL, 0, true);

        /* dispatch final cleanup and wait for HW queues to flush */
        bnx2x_vf_flr_clnup_hw(bp, vf);

        /* release VF resources */
        bnx2x_vf_free_resc(bp, vf);

        /* re-open the mailbox */
        bnx2x_vf_enable_mbx(bp, vf->abs_vfid);
        return;
out:
        BNX2X_ERR("vf[%d:%d] failed flr: rc %d\n",
                  vf->abs_vfid, i, rc);
}

static void bnx2x_vf_flr_clnup(struct bnx2x *bp)
{
        struct bnx2x_virtf *vf;
        int i;

        for (i = 0; i < BNX2X_NR_VIRTFN(bp); i++) {
                /* VF should be RESET & in FLR cleanup states */
                if (bnx2x_vf(bp, i, state) != VF_RESET ||
                    !bnx2x_vf(bp, i, flr_clnup_stage))
                        continue;

                DP(BNX2X_MSG_IOV, "next vf to cleanup: %d. Num of vfs: %d\n",
                   i, BNX2X_NR_VIRTFN(bp));

                vf = BP_VF(bp, i);

                /* lock the vf pf channel */
                bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_FLR);

                /* invoke the VF FLR SM */
                bnx2x_vf_flr(bp, vf);

                /* mark the VF to be ACKED and continue */
                vf->flr_clnup_stage = false;
                bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_FLR);
        }

        /* Acknowledge the handled VFs.
         * we are acknowledge all the vfs which an flr was requested for, even
         * if amongst them there are such that we never opened, since the mcp
         * will interrupt us immediately again if we only ack some of the bits,
         * resulting in an endless loop. This can happen for example in KVM
         * where an 'all ones' flr request is sometimes given by hyper visor
         */
        DP(BNX2X_MSG_MCP, "DRV_STATUS_VF_DISABLED ACK for vfs 0x%x 0x%x\n",
           bp->vfdb->flrd_vfs[0], bp->vfdb->flrd_vfs[1]);
        for (i = 0; i < FLRD_VFS_DWORDS; i++)
                SHMEM2_WR(bp, drv_ack_vf_disabled[BP_FW_MB_IDX(bp)][i],
                          bp->vfdb->flrd_vfs[i]);

        bnx2x_fw_command(bp, DRV_MSG_CODE_VF_DISABLED_DONE, 0);

        /* clear the acked bits - better yet if the MCP implemented
         * write to clear semantics
         */
        for (i = 0; i < FLRD_VFS_DWORDS; i++)
                SHMEM2_WR(bp, drv_ack_vf_disabled[BP_FW_MB_IDX(bp)][i], 0);
}

void bnx2x_vf_handle_flr_event(struct bnx2x *bp)
{
        int i;

        /* Read FLR'd VFs */
        for (i = 0; i < FLRD_VFS_DWORDS; i++)
                bp->vfdb->flrd_vfs[i] = SHMEM2_RD(bp, mcp_vf_disabled[i]);

        DP(BNX2X_MSG_MCP,
           "DRV_STATUS_VF_DISABLED received for vfs 0x%x 0x%x\n",
           bp->vfdb->flrd_vfs[0], bp->vfdb->flrd_vfs[1]);

        for_each_vf(bp, i) {
                struct bnx2x_virtf *vf = BP_VF(bp, i);
                u32 reset = 0;

                if (vf->abs_vfid < 32)
                        reset = bp->vfdb->flrd_vfs[0] & (1 << vf->abs_vfid);
                else
                        reset = bp->vfdb->flrd_vfs[1] &
                                (1 << (vf->abs_vfid - 32));

                if (reset) {
                        /* set as reset and ready for cleanup */
                        vf->state = VF_RESET;
                        vf->flr_clnup_stage = true;

                        DP(BNX2X_MSG_IOV,
                           "Initiating Final cleanup for VF %d\n",
                           vf->abs_vfid);
                }
        }

        /* do the FLR cleanup for all marked VFs*/
        bnx2x_vf_flr_clnup(bp);
}

/* IOV global initialization routines  */
void bnx2x_iov_init_dq(struct bnx2x *bp)
{
        if (!IS_SRIOV(bp))
                return;

        /* Set the DQ such that the CID reflect the abs_vfid */
        REG_WR(bp, DORQ_REG_VF_NORM_VF_BASE, 0);
        REG_WR(bp, DORQ_REG_MAX_RVFID_SIZE, ilog2(BNX2X_MAX_NUM_OF_VFS));

        /* Set VFs starting CID. If its > 0 the preceding CIDs are belong to
         * the PF L2 queues
         */
        REG_WR(bp, DORQ_REG_VF_NORM_CID_BASE, BNX2X_FIRST_VF_CID);

        /* The VF window size is the log2 of the max number of CIDs per VF */
        REG_WR(bp, DORQ_REG_VF_NORM_CID_WND_SIZE, BNX2X_VF_CID_WND);

        /* The VF doorbell size  0 - *B, 4 - 128B. We set it here to match
         * the Pf doorbell size although the 2 are independent.
         */
        REG_WR(bp, DORQ_REG_VF_NORM_CID_OFST, 3);

        /* No security checks for now -
         * configure single rule (out of 16) mask = 0x1, value = 0x0,
         * CID range 0 - 0x1ffff
         */
        REG_WR(bp, DORQ_REG_VF_TYPE_MASK_0, 1);
        REG_WR(bp, DORQ_REG_VF_TYPE_VALUE_0, 0);
        REG_WR(bp, DORQ_REG_VF_TYPE_MIN_MCID_0, 0);
        REG_WR(bp, DORQ_REG_VF_TYPE_MAX_MCID_0, 0x1ffff);

        /* set the VF doorbell threshold. This threshold represents the amount
         * of doorbells allowed in the main DORQ fifo for a specific VF.
         */
        REG_WR(bp, DORQ_REG_VF_USAGE_CT_LIMIT, 64);
}

void bnx2x_iov_init_dmae(struct bnx2x *bp)
{
        if (pci_find_ext_capability(bp->pdev, PCI_EXT_CAP_ID_SRIOV))
                REG_WR(bp, DMAE_REG_BACKWARD_COMP_EN, 0);
}

static int bnx2x_vf_bus(struct bnx2x *bp, int vfid)
{
        struct pci_dev *dev = bp->pdev;
        struct bnx2x_sriov *iov = &bp->vfdb->sriov;

        return dev->bus->number + ((dev->devfn + iov->offset +
                                    iov->stride * vfid) >> 8);
}

static int bnx2x_vf_devfn(struct bnx2x *bp, int vfid)
{
        struct pci_dev *dev = bp->pdev;
        struct bnx2x_sriov *iov = &bp->vfdb->sriov;

        return (dev->devfn + iov->offset + iov->stride * vfid) & 0xff;
}

static void bnx2x_vf_set_bars(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        int i, n;
        struct pci_dev *dev = bp->pdev;
        struct bnx2x_sriov *iov = &bp->vfdb->sriov;

        for (i = 0, n = 0; i < PCI_SRIOV_NUM_BARS; i += 2, n++) {
                u64 start = pci_resource_start(dev, PCI_IOV_RESOURCES + i);
                u32 size = pci_resource_len(dev, PCI_IOV_RESOURCES + i);

                size /= iov->total;
                vf->bars[n].bar = start + size * vf->abs_vfid;
                vf->bars[n].size = size;
        }
}

static int bnx2x_ari_enabled(struct pci_dev *dev)
{
        return dev->bus->self && dev->bus->self->ari_enabled;
}

static int
bnx2x_get_vf_igu_cam_info(struct bnx2x *bp)
{
        int sb_id;
        u32 val;
        u8 fid, current_pf = 0;

        /* IGU in normal mode - read CAM */
        for (sb_id = 0; sb_id < IGU_REG_MAPPING_MEMORY_SIZE; sb_id++) {
                val = REG_RD(bp, IGU_REG_MAPPING_MEMORY + sb_id * 4);
                if (!(val & IGU_REG_MAPPING_MEMORY_VALID))
                        continue;
                fid = GET_FIELD((val), IGU_REG_MAPPING_MEMORY_FID);
                if (fid & IGU_FID_ENCODE_IS_PF)
                        current_pf = fid & IGU_FID_PF_NUM_MASK;
                else if (current_pf == BP_FUNC(bp))
                        bnx2x_vf_set_igu_info(bp, sb_id,
                                              (fid & IGU_FID_VF_NUM_MASK));
                DP(BNX2X_MSG_IOV, "%s[%d], igu_sb_id=%d, msix=%d\n",
                   ((fid & IGU_FID_ENCODE_IS_PF) ? "PF" : "VF"),
                   ((fid & IGU_FID_ENCODE_IS_PF) ? (fid & IGU_FID_PF_NUM_MASK) :
                   (fid & IGU_FID_VF_NUM_MASK)), sb_id,
                   GET_FIELD((val), IGU_REG_MAPPING_MEMORY_VECTOR));
        }
        DP(BNX2X_MSG_IOV, "vf_sbs_pool is %d\n", BP_VFDB(bp)->vf_sbs_pool);
        return BP_VFDB(bp)->vf_sbs_pool;
}

static void __bnx2x_iov_free_vfdb(struct bnx2x *bp)
{
        if (bp->vfdb) {
                kfree(bp->vfdb->vfqs);
                kfree(bp->vfdb->vfs);
                kfree(bp->vfdb);
        }
        bp->vfdb = NULL;
}

static int bnx2x_sriov_pci_cfg_info(struct bnx2x *bp, struct bnx2x_sriov *iov)
{
        int pos;
        struct pci_dev *dev = bp->pdev;

        pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
        if (!pos) {
                BNX2X_ERR("failed to find SRIOV capability in device\n");
                return -ENODEV;
        }

        iov->pos = pos;
        DP(BNX2X_MSG_IOV, "sriov ext pos %d\n", pos);
        pci_read_config_word(dev, pos + PCI_SRIOV_CTRL, &iov->ctrl);
        pci_read_config_word(dev, pos + PCI_SRIOV_TOTAL_VF, &iov->total);
        pci_read_config_word(dev, pos + PCI_SRIOV_INITIAL_VF, &iov->initial);
        pci_read_config_word(dev, pos + PCI_SRIOV_VF_OFFSET, &iov->offset);
        pci_read_config_word(dev, pos + PCI_SRIOV_VF_STRIDE, &iov->stride);
        pci_read_config_dword(dev, pos + PCI_SRIOV_SUP_PGSIZE, &iov->pgsz);
        pci_read_config_dword(dev, pos + PCI_SRIOV_CAP, &iov->cap);
        pci_read_config_byte(dev, pos + PCI_SRIOV_FUNC_LINK, &iov->link);

        return 0;
}

static int bnx2x_sriov_info(struct bnx2x *bp, struct bnx2x_sriov *iov)
{
        u32 val;

        /* read the SRIOV capability structure
         * The fields can be read via configuration read or
         * directly from the device (starting at offset PCICFG_OFFSET)
         */
        if (bnx2x_sriov_pci_cfg_info(bp, iov))
                return -ENODEV;

        /* get the number of SRIOV bars */
        iov->nres = 0;

        /* read the first_vfid */
        val = REG_RD(bp, PCICFG_OFFSET + GRC_CONFIG_REG_PF_INIT_VF);
        iov->first_vf_in_pf = ((val & GRC_CR_PF_INIT_VF_PF_FIRST_VF_NUM_MASK)
                               * 8) - (BNX2X_MAX_NUM_OF_VFS * BP_PATH(bp));

        DP(BNX2X_MSG_IOV,
           "IOV info[%d]: first vf %d, nres %d, cap 0x%x, ctrl 0x%x, total %d, initial %d, num vfs %d, offset %d, stride %d, page size 0x%x\n",
           BP_FUNC(bp),
           iov->first_vf_in_pf, iov->nres, iov->cap, iov->ctrl, iov->total,
           iov->initial, iov->nr_virtfn, iov->offset, iov->stride, iov->pgsz);

        return 0;
}

/* must be called after PF bars are mapped */
int bnx2x_iov_init_one(struct bnx2x *bp, int int_mode_param,
                       int num_vfs_param)
{
        int err, i;
        struct bnx2x_sriov *iov;
        struct pci_dev *dev = bp->pdev;

        bp->vfdb = NULL;

        /* verify is pf */
        if (IS_VF(bp))
                return 0;

        /* verify sriov capability is present in configuration space */
        if (!pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV))
                return 0;

        /* verify chip revision */
        if (CHIP_IS_E1x(bp))
                return 0;

        /* check if SRIOV support is turned off */
        if (!num_vfs_param)
                return 0;

        /* SRIOV assumes that num of PF CIDs < BNX2X_FIRST_VF_CID */
        if (BNX2X_L2_MAX_CID(bp) >= BNX2X_FIRST_VF_CID) {
                BNX2X_ERR("PF cids %d are overspilling into vf space (starts at %d). Abort SRIOV\n",
                          BNX2X_L2_MAX_CID(bp), BNX2X_FIRST_VF_CID);
                return 0;
        }

        /* SRIOV can be enabled only with MSIX */
        if (int_mode_param == BNX2X_INT_MODE_MSI ||
            int_mode_param == BNX2X_INT_MODE_INTX) {
                BNX2X_ERR("Forced MSI/INTx mode is incompatible with SRIOV\n");
                return 0;
        }

        err = -EIO;
        /* verify ari is enabled */
        if (!bnx2x_ari_enabled(bp->pdev)) {
                BNX2X_ERR("ARI not supported (check pci bridge ARI forwarding), SRIOV can not be enabled\n");
                return 0;
        }

        /* verify igu is in normal mode */
        if (CHIP_INT_MODE_IS_BC(bp)) {
                BNX2X_ERR("IGU not normal mode,  SRIOV can not be enabled\n");
                return 0;
        }

        /* allocate the vfs database */
        bp->vfdb = kzalloc(sizeof(*(bp->vfdb)), GFP_KERNEL);
        if (!bp->vfdb) {
                BNX2X_ERR("failed to allocate vf database\n");
                err = -ENOMEM;
                goto failed;
        }

        /* get the sriov info - Linux already collected all the pertinent
         * information, however the sriov structure is for the private use
         * of the pci module. Also we want this information regardless
         * of the hyper-visor.
         */
        iov = &(bp->vfdb->sriov);
        err = bnx2x_sriov_info(bp, iov);
        if (err)
                goto failed;

        /* SR-IOV capability was enabled but there are no VFs*/
        if (iov->total == 0)
                goto failed;

        iov->nr_virtfn = min_t(u16, iov->total, num_vfs_param);

        DP(BNX2X_MSG_IOV, "num_vfs_param was %d, nr_virtfn was %d\n",
           num_vfs_param, iov->nr_virtfn);

        /* allocate the vf array */
        bp->vfdb->vfs = kzalloc(sizeof(struct bnx2x_virtf) *
                                BNX2X_NR_VIRTFN(bp), GFP_KERNEL);
        if (!bp->vfdb->vfs) {
                BNX2X_ERR("failed to allocate vf array\n");
                err = -ENOMEM;
                goto failed;
        }

        /* Initial VF init - index and abs_vfid - nr_virtfn must be set */
        for_each_vf(bp, i) {
                bnx2x_vf(bp, i, index) = i;
                bnx2x_vf(bp, i, abs_vfid) = iov->first_vf_in_pf + i;
                bnx2x_vf(bp, i, state) = VF_FREE;
                mutex_init(&bnx2x_vf(bp, i, op_mutex));
                bnx2x_vf(bp, i, op_current) = CHANNEL_TLV_NONE;
        }

        /* re-read the IGU CAM for VFs - index and abs_vfid must be set */
        if (!bnx2x_get_vf_igu_cam_info(bp)) {
                BNX2X_ERR("No entries in IGU CAM for vfs\n");
                err = -EINVAL;
                goto failed;
        }

        /* allocate the queue arrays for all VFs */
        bp->vfdb->vfqs = kzalloc(
                BNX2X_MAX_NUM_VF_QUEUES * sizeof(struct bnx2x_vf_queue),
                GFP_KERNEL);

        if (!bp->vfdb->vfqs) {
                BNX2X_ERR("failed to allocate vf queue array\n");
                err = -ENOMEM;
                goto failed;
        }

        /* Prepare the VFs event synchronization mechanism */
        mutex_init(&bp->vfdb->event_mutex);

        mutex_init(&bp->vfdb->bulletin_mutex);

        return 0;
failed:
        DP(BNX2X_MSG_IOV, "Failed err=%d\n", err);
        __bnx2x_iov_free_vfdb(bp);
        return err;
}

void bnx2x_iov_remove_one(struct bnx2x *bp)
{
        int vf_idx;

        /* if SRIOV is not enabled there's nothing to do */
        if (!IS_SRIOV(bp))
                return;

        bnx2x_disable_sriov(bp);

        /* disable access to all VFs */
        for (vf_idx = 0; vf_idx < bp->vfdb->sriov.total; vf_idx++) {
                bnx2x_pretend_func(bp,
                                   HW_VF_HANDLE(bp,
                                                bp->vfdb->sriov.first_vf_in_pf +
                                                vf_idx));
                DP(BNX2X_MSG_IOV, "disabling internal access for vf %d\n",
                   bp->vfdb->sriov.first_vf_in_pf + vf_idx);
                bnx2x_vf_enable_internal(bp, 0);
                bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
        }

        /* free vf database */
        __bnx2x_iov_free_vfdb(bp);
}

void bnx2x_iov_free_mem(struct bnx2x *bp)
{
        int i;

        if (!IS_SRIOV(bp))
                return;

        /* free vfs hw contexts */
        for (i = 0; i < BNX2X_VF_CIDS/ILT_PAGE_CIDS; i++) {
                struct hw_dma *cxt = &bp->vfdb->context[i];
                BNX2X_PCI_FREE(cxt->addr, cxt->mapping, cxt->size);
        }

        BNX2X_PCI_FREE(BP_VFDB(bp)->sp_dma.addr,
                       BP_VFDB(bp)->sp_dma.mapping,
                       BP_VFDB(bp)->sp_dma.size);

        BNX2X_PCI_FREE(BP_VF_MBX_DMA(bp)->addr,
                       BP_VF_MBX_DMA(bp)->mapping,
                       BP_VF_MBX_DMA(bp)->size);

        BNX2X_PCI_FREE(BP_VF_BULLETIN_DMA(bp)->addr,
                       BP_VF_BULLETIN_DMA(bp)->mapping,
                       BP_VF_BULLETIN_DMA(bp)->size);
}

int bnx2x_iov_alloc_mem(struct bnx2x *bp)
{
        size_t tot_size;
        int i, rc = 0;

        if (!IS_SRIOV(bp))
                return rc;

        /* allocate vfs hw contexts */
        tot_size = (BP_VFDB(bp)->sriov.first_vf_in_pf + BNX2X_NR_VIRTFN(bp)) *
                BNX2X_CIDS_PER_VF * sizeof(union cdu_context);

        for (i = 0; i < BNX2X_VF_CIDS/ILT_PAGE_CIDS; i++) {
                struct hw_dma *cxt = BP_VF_CXT_PAGE(bp, i);
                cxt->size = min_t(size_t, tot_size, CDU_ILT_PAGE_SZ);

                if (cxt->size) {
                        cxt->addr = BNX2X_PCI_ALLOC(&cxt->mapping, cxt->size);
                        if (!cxt->addr)
                                goto alloc_mem_err;
                } else {
                        cxt->addr = NULL;
                        cxt->mapping = 0;
                }
                tot_size -= cxt->size;
        }

        /* allocate vfs ramrods dma memory - client_init and set_mac */
        tot_size = BNX2X_NR_VIRTFN(bp) * sizeof(struct bnx2x_vf_sp);
        BP_VFDB(bp)->sp_dma.addr = BNX2X_PCI_ALLOC(&BP_VFDB(bp)->sp_dma.mapping,
                                                   tot_size);
        if (!BP_VFDB(bp)->sp_dma.addr)
                goto alloc_mem_err;
        BP_VFDB(bp)->sp_dma.size = tot_size;

        /* allocate mailboxes */
        tot_size = BNX2X_NR_VIRTFN(bp) * MBX_MSG_ALIGNED_SIZE;
        BP_VF_MBX_DMA(bp)->addr = BNX2X_PCI_ALLOC(&BP_VF_MBX_DMA(bp)->mapping,
                                                  tot_size);
        if (!BP_VF_MBX_DMA(bp)->addr)
                goto alloc_mem_err;

        BP_VF_MBX_DMA(bp)->size = tot_size;

        /* allocate local bulletin boards */
        tot_size = BNX2X_NR_VIRTFN(bp) * BULLETIN_CONTENT_SIZE;
        BP_VF_BULLETIN_DMA(bp)->addr = BNX2X_PCI_ALLOC(&BP_VF_BULLETIN_DMA(bp)->mapping,
                                                       tot_size);
        if (!BP_VF_BULLETIN_DMA(bp)->addr)
                goto alloc_mem_err;

        BP_VF_BULLETIN_DMA(bp)->size = tot_size;

        return 0;

alloc_mem_err:
        return -ENOMEM;
}

static void bnx2x_vfq_init(struct bnx2x *bp, struct bnx2x_virtf *vf,
                           struct bnx2x_vf_queue *q)
{
        u8 cl_id = vfq_cl_id(vf, q);
        u8 func_id = FW_VF_HANDLE(vf->abs_vfid);
        unsigned long q_type = 0;

        set_bit(BNX2X_Q_TYPE_HAS_TX, &q_type);
        set_bit(BNX2X_Q_TYPE_HAS_RX, &q_type);

        /* Queue State object */
        bnx2x_init_queue_obj(bp, &q->sp_obj,
                             cl_id, &q->cid, 1, func_id,
                             bnx2x_vf_sp(bp, vf, q_data),
                             bnx2x_vf_sp_map(bp, vf, q_data),
                             q_type);

        /* sp indication is set only when vlan/mac/etc. are initialized */
        q->sp_initialized = false;

        DP(BNX2X_MSG_IOV,
           "initialized vf %d's queue object. func id set to %d. cid set to 0x%x\n",
           vf->abs_vfid, q->sp_obj.func_id, q->cid);
}

static int bnx2x_max_speed_cap(struct bnx2x *bp)
{
        u32 supported = bp->port.supported[bnx2x_get_link_cfg_idx(bp)];

        if (supported &
            (SUPPORTED_20000baseMLD2_Full | SUPPORTED_20000baseKR2_Full))
                return 20000;

        return 10000; /* assume lowest supported speed is 10G */
}

int bnx2x_iov_link_update_vf(struct bnx2x *bp, int idx)
{
        struct bnx2x_link_report_data *state = &bp->last_reported_link;
        struct pf_vf_bulletin_content *bulletin;
        struct bnx2x_virtf *vf;
        bool update = true;
        int rc = 0;

        /* sanity and init */
        rc = bnx2x_vf_op_prep(bp, idx, &vf, &bulletin, false);
        if (rc)
                return rc;

        mutex_lock(&bp->vfdb->bulletin_mutex);

        if (vf->link_cfg == IFLA_VF_LINK_STATE_AUTO) {
                bulletin->valid_bitmap |= 1 << LINK_VALID;

                bulletin->link_speed = state->line_speed;
                bulletin->link_flags = 0;
                if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
                             &state->link_report_flags))
                        bulletin->link_flags |= VFPF_LINK_REPORT_LINK_DOWN;
                if (test_bit(BNX2X_LINK_REPORT_FD,
                             &state->link_report_flags))
                        bulletin->link_flags |= VFPF_LINK_REPORT_FULL_DUPLEX;
                if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
                             &state->link_report_flags))
                        bulletin->link_flags |= VFPF_LINK_REPORT_RX_FC_ON;
                if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
                             &state->link_report_flags))
                        bulletin->link_flags |= VFPF_LINK_REPORT_TX_FC_ON;
        } else if (vf->link_cfg == IFLA_VF_LINK_STATE_DISABLE &&
                   !(bulletin->link_flags & VFPF_LINK_REPORT_LINK_DOWN)) {
                bulletin->valid_bitmap |= 1 << LINK_VALID;
                bulletin->link_flags |= VFPF_LINK_REPORT_LINK_DOWN;
        } else if (vf->link_cfg == IFLA_VF_LINK_STATE_ENABLE &&
                   (bulletin->link_flags & VFPF_LINK_REPORT_LINK_DOWN)) {
                bulletin->valid_bitmap |= 1 << LINK_VALID;
                bulletin->link_speed = bnx2x_max_speed_cap(bp);
                bulletin->link_flags &= ~VFPF_LINK_REPORT_LINK_DOWN;
        } else {
                update = false;
        }

        if (update) {
                DP(NETIF_MSG_LINK | BNX2X_MSG_IOV,
                   "vf %d mode %u speed %d flags %x\n", idx,
                   vf->link_cfg, bulletin->link_speed, bulletin->link_flags);

                /* Post update on VF's bulletin board */
                rc = bnx2x_post_vf_bulletin(bp, idx);
                if (rc) {
                        BNX2X_ERR("failed to update VF[%d] bulletin\n", idx);
                        goto out;
                }
        }

out:
        mutex_unlock(&bp->vfdb->bulletin_mutex);
        return rc;
}

int bnx2x_set_vf_link_state(struct net_device *dev, int idx, int link_state)
{
        struct bnx2x *bp = netdev_priv(dev);
        struct bnx2x_virtf *vf = BP_VF(bp, idx);

        if (!vf)
                return -EINVAL;

        if (vf->link_cfg == link_state)
                return 0; /* nothing todo */

        vf->link_cfg = link_state;

        return bnx2x_iov_link_update_vf(bp, idx);
}

void bnx2x_iov_link_update(struct bnx2x *bp)
{
        int vfid;

        if (!IS_SRIOV(bp))
                return;

        for_each_vf(bp, vfid)
                bnx2x_iov_link_update_vf(bp, vfid);
}

/* called by bnx2x_nic_load */
int bnx2x_iov_nic_init(struct bnx2x *bp)
{
        int vfid;

        if (!IS_SRIOV(bp)) {
                DP(BNX2X_MSG_IOV, "vfdb was not allocated\n");
                return 0;
        }

        DP(BNX2X_MSG_IOV, "num of vfs: %d\n", (bp)->vfdb->sriov.nr_virtfn);

        /* let FLR complete ... */
        msleep(100);

        /* initialize vf database */
        for_each_vf(bp, vfid) {
                struct bnx2x_virtf *vf = BP_VF(bp, vfid);

                int base_vf_cid = (BP_VFDB(bp)->sriov.first_vf_in_pf + vfid) *
                        BNX2X_CIDS_PER_VF;

                union cdu_context *base_cxt = (union cdu_context *)
                        BP_VF_CXT_PAGE(bp, base_vf_cid/ILT_PAGE_CIDS)->addr +
                        (base_vf_cid & (ILT_PAGE_CIDS-1));

                DP(BNX2X_MSG_IOV,
                   "VF[%d] Max IGU SBs: %d, base vf cid 0x%x, base cid 0x%x, base cxt %p\n",
                   vf->abs_vfid, vf_sb_count(vf), base_vf_cid,
                   BNX2X_FIRST_VF_CID + base_vf_cid, base_cxt);

                /* init statically provisioned resources */
                bnx2x_iov_static_resc(bp, vf);

                /* queues are initialized during VF-ACQUIRE */
                vf->filter_state = 0;
                vf->sp_cl_id = bnx2x_fp(bp, 0, cl_id);

                /*  init mcast object - This object will be re-initialized
                 *  during VF-ACQUIRE with the proper cl_id and cid.
                 *  It needs to be initialized here so that it can be safely
                 *  handled by a subsequent FLR flow.
                 */
                vf->mcast_list_len = 0;
                bnx2x_init_mcast_obj(bp, &vf->mcast_obj, 0xFF,
                                     0xFF, 0xFF, 0xFF,
                                     bnx2x_vf_sp(bp, vf, mcast_rdata),
                                     bnx2x_vf_sp_map(bp, vf, mcast_rdata),
                                     BNX2X_FILTER_MCAST_PENDING,
                                     &vf->filter_state,
                                     BNX2X_OBJ_TYPE_RX_TX);

                /* set the mailbox message addresses */
                BP_VF_MBX(bp, vfid)->msg = (struct bnx2x_vf_mbx_msg *)
                        (((u8 *)BP_VF_MBX_DMA(bp)->addr) + vfid *
                        MBX_MSG_ALIGNED_SIZE);

                BP_VF_MBX(bp, vfid)->msg_mapping = BP_VF_MBX_DMA(bp)->mapping +
                        vfid * MBX_MSG_ALIGNED_SIZE;

                /* Enable vf mailbox */
                bnx2x_vf_enable_mbx(bp, vf->abs_vfid);
        }

        /* Final VF init */
        for_each_vf(bp, vfid) {
                struct bnx2x_virtf *vf = BP_VF(bp, vfid);

                /* fill in the BDF and bars */
                vf->bus = bnx2x_vf_bus(bp, vfid);
                vf->devfn = bnx2x_vf_devfn(bp, vfid);
                bnx2x_vf_set_bars(bp, vf);

                DP(BNX2X_MSG_IOV,
                   "VF info[%d]: bus 0x%x, devfn 0x%x, bar0 [0x%x, %d], bar1 [0x%x, %d], bar2 [0x%x, %d]\n",
                   vf->abs_vfid, vf->bus, vf->devfn,
                   (unsigned)vf->bars[0].bar, vf->bars[0].size,
                   (unsigned)vf->bars[1].bar, vf->bars[1].size,
                   (unsigned)vf->bars[2].bar, vf->bars[2].size);
        }

        return 0;
}

/* called by bnx2x_chip_cleanup */
int bnx2x_iov_chip_cleanup(struct bnx2x *bp)
{
        int i;

        if (!IS_SRIOV(bp))
                return 0;

        /* release all the VFs */
        for_each_vf(bp, i)
                bnx2x_vf_release(bp, BP_VF(bp, i));

        return 0;
}

/* called by bnx2x_init_hw_func, returns the next ilt line */
int bnx2x_iov_init_ilt(struct bnx2x *bp, u16 line)
{
        int i;
        struct bnx2x_ilt *ilt = BP_ILT(bp);

        if (!IS_SRIOV(bp))
                return line;

        /* set vfs ilt lines */
        for (i = 0; i < BNX2X_VF_CIDS/ILT_PAGE_CIDS; i++) {
                struct hw_dma *hw_cxt = BP_VF_CXT_PAGE(bp, i);

                ilt->lines[line+i].page = hw_cxt->addr;
                ilt->lines[line+i].page_mapping = hw_cxt->mapping;
                ilt->lines[line+i].size = hw_cxt->size; /* doesn't matter */
        }
        return line + i;
}

static u8 bnx2x_iov_is_vf_cid(struct bnx2x *bp, u16 cid)
{
        return ((cid >= BNX2X_FIRST_VF_CID) &&
                ((cid - BNX2X_FIRST_VF_CID) < BNX2X_VF_CIDS));
}

static
void bnx2x_vf_handle_classification_eqe(struct bnx2x *bp,
                                        struct bnx2x_vf_queue *vfq,
                                        union event_ring_elem *elem)
{
        unsigned long ramrod_flags = 0;
        int rc = 0;

        /* Always push next commands out, don't wait here */
        set_bit(RAMROD_CONT, &ramrod_flags);

        switch (elem->message.data.eth_event.echo >> BNX2X_SWCID_SHIFT) {
        case BNX2X_FILTER_MAC_PENDING:
                rc = vfq->mac_obj.complete(bp, &vfq->mac_obj, elem,
                                           &ramrod_flags);
                break;
        case BNX2X_FILTER_VLAN_PENDING:
                rc = vfq->vlan_obj.complete(bp, &vfq->vlan_obj, elem,
                                            &ramrod_flags);
                break;
        default:
                BNX2X_ERR("Unsupported classification command: %d\n",
                          elem->message.data.eth_event.echo);
                return;
        }
        if (rc < 0)
                BNX2X_ERR("Failed to schedule new commands: %d\n", rc);
        else if (rc > 0)
                DP(BNX2X_MSG_IOV, "Scheduled next pending commands...\n");
}

static
void bnx2x_vf_handle_mcast_eqe(struct bnx2x *bp,
                               struct bnx2x_virtf *vf)
{
        struct bnx2x_mcast_ramrod_params rparam = {NULL};
        int rc;

        rparam.mcast_obj = &vf->mcast_obj;
        vf->mcast_obj.raw.clear_pending(&vf->mcast_obj.raw);

        /* If there are pending mcast commands - send them */
        if (vf->mcast_obj.check_pending(&vf->mcast_obj)) {
                rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
                if (rc < 0)
                        BNX2X_ERR("Failed to send pending mcast commands: %d\n",
                                  rc);
        }
}

static
void bnx2x_vf_handle_filters_eqe(struct bnx2x *bp,
                                 struct bnx2x_virtf *vf)
{
        smp_mb__before_atomic();
        clear_bit(BNX2X_FILTER_RX_MODE_PENDING, &vf->filter_state);
        smp_mb__after_atomic();
}

static void bnx2x_vf_handle_rss_update_eqe(struct bnx2x *bp,
                                           struct bnx2x_virtf *vf)
{
        vf->rss_conf_obj.raw.clear_pending(&vf->rss_conf_obj.raw);
}

int bnx2x_iov_eq_sp_event(struct bnx2x *bp, union event_ring_elem *elem)
{
        struct bnx2x_virtf *vf;
        int qidx = 0, abs_vfid;
        u8 opcode;
        u16 cid = 0xffff;

        if (!IS_SRIOV(bp))
                return 1;

        /* first get the cid - the only events we handle here are cfc-delete
         * and set-mac completion
         */
        opcode = elem->message.opcode;

        switch (opcode) {
        case EVENT_RING_OPCODE_CFC_DEL:
                cid = SW_CID((__force __le32)
                             elem->message.data.cfc_del_event.cid);
                DP(BNX2X_MSG_IOV, "checking cfc-del comp cid=%d\n", cid);
                break;
        case EVENT_RING_OPCODE_CLASSIFICATION_RULES:
        case EVENT_RING_OPCODE_MULTICAST_RULES:
        case EVENT_RING_OPCODE_FILTERS_RULES:
        case EVENT_RING_OPCODE_RSS_UPDATE_RULES:
                cid = (elem->message.data.eth_event.echo &
                       BNX2X_SWCID_MASK);
                DP(BNX2X_MSG_IOV, "checking filtering comp cid=%d\n", cid);
                break;
        case EVENT_RING_OPCODE_VF_FLR:
                abs_vfid = elem->message.data.vf_flr_event.vf_id;
                DP(BNX2X_MSG_IOV, "Got VF FLR notification abs_vfid=%d\n",
                   abs_vfid);
                goto get_vf;
        case EVENT_RING_OPCODE_MALICIOUS_VF:
                abs_vfid = elem->message.data.malicious_vf_event.vf_id;
                BNX2X_ERR("Got VF MALICIOUS notification abs_vfid=%d err_id=0x%x\n",
                          abs_vfid,
                          elem->message.data.malicious_vf_event.err_id);
                goto get_vf;
        default:
                return 1;
        }

        /* check if the cid is the VF range */
        if (!bnx2x_iov_is_vf_cid(bp, cid)) {
                DP(BNX2X_MSG_IOV, "cid is outside vf range: %d\n", cid);
                return 1;
        }

        /* extract vf and rxq index from vf_cid - relies on the following:
         * 1. vfid on cid reflects the true abs_vfid
         * 2. The max number of VFs (per path) is 64
         */
        qidx = cid & ((1 << BNX2X_VF_CID_WND)-1);
        abs_vfid = (cid >> BNX2X_VF_CID_WND) & (BNX2X_MAX_NUM_OF_VFS-1);
get_vf:
        vf = bnx2x_vf_by_abs_fid(bp, abs_vfid);

        if (!vf) {
                BNX2X_ERR("EQ completion for unknown VF, cid %d, abs_vfid %d\n",
                          cid, abs_vfid);
                return 0;
        }

        switch (opcode) {
        case EVENT_RING_OPCODE_CFC_DEL:
                DP(BNX2X_MSG_IOV, "got VF [%d:%d] cfc delete ramrod\n",
                   vf->abs_vfid, qidx);
                vfq_get(vf, qidx)->sp_obj.complete_cmd(bp,
                                                       &vfq_get(vf,
                                                                qidx)->sp_obj,
                                                       BNX2X_Q_CMD_CFC_DEL);
                break;
        case EVENT_RING_OPCODE_CLASSIFICATION_RULES:
                DP(BNX2X_MSG_IOV, "got VF [%d:%d] set mac/vlan ramrod\n",
                   vf->abs_vfid, qidx);
                bnx2x_vf_handle_classification_eqe(bp, vfq_get(vf, qidx), elem);
                break;
        case EVENT_RING_OPCODE_MULTICAST_RULES:
                DP(BNX2X_MSG_IOV, "got VF [%d:%d] set mcast ramrod\n",
                   vf->abs_vfid, qidx);
                bnx2x_vf_handle_mcast_eqe(bp, vf);
                break;
        case EVENT_RING_OPCODE_FILTERS_RULES:
                DP(BNX2X_MSG_IOV, "got VF [%d:%d] set rx-mode ramrod\n",
                   vf->abs_vfid, qidx);
                bnx2x_vf_handle_filters_eqe(bp, vf);
                break;
        case EVENT_RING_OPCODE_RSS_UPDATE_RULES:
                DP(BNX2X_MSG_IOV, "got VF [%d:%d] RSS update ramrod\n",
                   vf->abs_vfid, qidx);
                bnx2x_vf_handle_rss_update_eqe(bp, vf);
        case EVENT_RING_OPCODE_VF_FLR:
        case EVENT_RING_OPCODE_MALICIOUS_VF:
                /* Do nothing for now */
                return 0;
        }

        return 0;
}

static struct bnx2x_virtf *bnx2x_vf_by_cid(struct bnx2x *bp, int vf_cid)
{
        /* extract the vf from vf_cid - relies on the following:
         * 1. vfid on cid reflects the true abs_vfid
         * 2. The max number of VFs (per path) is 64
         */
        int abs_vfid = (vf_cid >> BNX2X_VF_CID_WND) & (BNX2X_MAX_NUM_OF_VFS-1);
        return bnx2x_vf_by_abs_fid(bp, abs_vfid);
}

void bnx2x_iov_set_queue_sp_obj(struct bnx2x *bp, int vf_cid,
                                struct bnx2x_queue_sp_obj **q_obj)
{
        struct bnx2x_virtf *vf;

        if (!IS_SRIOV(bp))
                return;

        vf = bnx2x_vf_by_cid(bp, vf_cid);

        if (vf) {
                /* extract queue index from vf_cid - relies on the following:
                 * 1. vfid on cid reflects the true abs_vfid
                 * 2. The max number of VFs (per path) is 64
                 */
                int q_index = vf_cid & ((1 << BNX2X_VF_CID_WND)-1);
                *q_obj = &bnx2x_vfq(vf, q_index, sp_obj);
        } else {
                BNX2X_ERR("No vf matching cid %d\n", vf_cid);
        }
}

void bnx2x_iov_adjust_stats_req(struct bnx2x *bp)
{
        int i;
        int first_queue_query_index, num_queues_req;
        dma_addr_t cur_data_offset;
        struct stats_query_entry *cur_query_entry;
        u8 stats_count = 0;
        bool is_fcoe = false;

        if (!IS_SRIOV(bp))
                return;

        if (!NO_FCOE(bp))
                is_fcoe = true;

        /* fcoe adds one global request and one queue request */
        num_queues_req = BNX2X_NUM_ETH_QUEUES(bp) + is_fcoe;
        first_queue_query_index = BNX2X_FIRST_QUEUE_QUERY_IDX -
                (is_fcoe ? 0 : 1);

        DP_AND((BNX2X_MSG_IOV | BNX2X_MSG_STATS),
               "BNX2X_NUM_ETH_QUEUES %d, is_fcoe %d, first_queue_query_index %d => determined the last non virtual statistics query index is %d. Will add queries on top of that\n",
               BNX2X_NUM_ETH_QUEUES(bp), is_fcoe, first_queue_query_index,
               first_queue_query_index + num_queues_req);

        cur_data_offset = bp->fw_stats_data_mapping +
                offsetof(struct bnx2x_fw_stats_data, queue_stats) +
                num_queues_req * sizeof(struct per_queue_stats);

        cur_query_entry = &bp->fw_stats_req->
                query[first_queue_query_index + num_queues_req];

        for_each_vf(bp, i) {
                int j;
                struct bnx2x_virtf *vf = BP_VF(bp, i);

                if (vf->state != VF_ENABLED) {
                        DP_AND((BNX2X_MSG_IOV | BNX2X_MSG_STATS),
                               "vf %d not enabled so no stats for it\n",
                               vf->abs_vfid);
                        continue;
                }

                DP(BNX2X_MSG_IOV, "add addresses for vf %d\n", vf->abs_vfid);
                for_each_vfq(vf, j) {
                        struct bnx2x_vf_queue *rxq = vfq_get(vf, j);

                        dma_addr_t q_stats_addr =
                                vf->fw_stat_map + j * vf->stats_stride;

                        /* collect stats fro active queues only */
                        if (bnx2x_get_q_logical_state(bp, &rxq->sp_obj) ==
                            BNX2X_Q_LOGICAL_STATE_STOPPED)
                                continue;

                        /* create stats query entry for this queue */
                        cur_query_entry->kind = STATS_TYPE_QUEUE;
                        cur_query_entry->index = vfq_stat_id(vf, rxq);
                        cur_query_entry->funcID =
                                cpu_to_le16(FW_VF_HANDLE(vf->abs_vfid));
                        cur_query_entry->address.hi =
                                cpu_to_le32(U64_HI(q_stats_addr));
                        cur_query_entry->address.lo =
                                cpu_to_le32(U64_LO(q_stats_addr));
                        DP(BNX2X_MSG_IOV,
                           "added address %x %x for vf %d queue %d client %d\n",
                           cur_query_entry->address.hi,
                           cur_query_entry->address.lo, cur_query_entry->funcID,
                           j, cur_query_entry->index);
                        cur_query_entry++;
                        cur_data_offset += sizeof(struct per_queue_stats);
                        stats_count++;

                        /* all stats are coalesced to the leading queue */
                        if (vf->cfg_flags & VF_CFG_STATS_COALESCE)
                                break;
                }
        }
        bp->fw_stats_req->hdr.cmd_num = bp->fw_stats_num + stats_count;
}

/* VF API helpers */
static void bnx2x_vf_qtbl_set_q(struct bnx2x *bp, u8 abs_vfid, u8 qid,
                                u8 enable)
{
        u32 reg = PXP_REG_HST_ZONE_PERMISSION_TABLE + qid * 4;
        u32 val = enable ? (abs_vfid | (1 << 6)) : 0;

        REG_WR(bp, reg, val);
}

static void bnx2x_vf_clr_qtbl(struct bnx2x *bp, struct bnx2x_virtf *vf)

{
        int i;

        for_each_vfq(vf, i)
                bnx2x_vf_qtbl_set_q(bp, vf->abs_vfid,
                                    vfq_qzone_id(vf, vfq_get(vf, i)), false);
}

static void bnx2x_vf_igu_disable(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        u32 val;

        /* clear the VF configuration - pretend */
        bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
        val = REG_RD(bp, IGU_REG_VF_CONFIGURATION);
        val &= ~(IGU_VF_CONF_MSI_MSIX_EN | IGU_VF_CONF_SINGLE_ISR_EN |
                 IGU_VF_CONF_FUNC_EN | IGU_VF_CONF_PARENT_MASK);
        REG_WR(bp, IGU_REG_VF_CONFIGURATION, val);
        bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}

u8 bnx2x_vf_max_queue_cnt(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        return min_t(u8, min_t(u8, vf_sb_count(vf), BNX2X_CIDS_PER_VF),
                     BNX2X_VF_MAX_QUEUES);
}

static
int bnx2x_vf_chk_avail_resc(struct bnx2x *bp, struct bnx2x_virtf *vf,
                            struct vf_pf_resc_request *req_resc)
{
        u8 rxq_cnt = vf_rxq_count(vf) ? : bnx2x_vf_max_queue_cnt(bp, vf);
        u8 txq_cnt = vf_txq_count(vf) ? : bnx2x_vf_max_queue_cnt(bp, vf);

        /* Save a vlan filter for the Hypervisor */
        return ((req_resc->num_rxqs <= rxq_cnt) &&
                (req_resc->num_txqs <= txq_cnt) &&
                (req_resc->num_sbs <= vf_sb_count(vf))   &&
                (req_resc->num_mac_filters <= vf_mac_rules_cnt(vf)) &&
                (req_resc->num_vlan_filters <= vf_vlan_rules_visible_cnt(vf)));
}

/* CORE VF API */
int bnx2x_vf_acquire(struct bnx2x *bp, struct bnx2x_virtf *vf,
                     struct vf_pf_resc_request *resc)
{
        int base_vf_cid = (BP_VFDB(bp)->sriov.first_vf_in_pf + vf->index) *
                BNX2X_CIDS_PER_VF;

        union cdu_context *base_cxt = (union cdu_context *)
                BP_VF_CXT_PAGE(bp, base_vf_cid/ILT_PAGE_CIDS)->addr +
                (base_vf_cid & (ILT_PAGE_CIDS-1));
        int i;

        /* if state is 'acquired' the VF was not released or FLR'd, in
         * this case the returned resources match the acquired already
         * acquired resources. Verify that the requested numbers do
         * not exceed the already acquired numbers.
         */
        if (vf->state == VF_ACQUIRED) {
                DP(BNX2X_MSG_IOV, "VF[%d] Trying to re-acquire resources (VF was not released or FLR'd)\n",
                   vf->abs_vfid);

                if (!bnx2x_vf_chk_avail_resc(bp, vf, resc)) {
                        BNX2X_ERR("VF[%d] When re-acquiring resources, requested numbers must be <= then previously acquired numbers\n",
                                  vf->abs_vfid);
                        return -EINVAL;
                }
                return 0;
        }

        /* Otherwise vf state must be 'free' or 'reset' */
        if (vf->state != VF_FREE && vf->state != VF_RESET) {
                BNX2X_ERR("VF[%d] Can not acquire a VF with state %d\n",
                          vf->abs_vfid, vf->state);
                return -EINVAL;
        }

        /* static allocation:
         * the global maximum number are fixed per VF. Fail the request if
         * requested number exceed these globals
         */
        if (!bnx2x_vf_chk_avail_resc(bp, vf, resc)) {
                DP(BNX2X_MSG_IOV,
                   "cannot fulfill vf resource request. Placing maximal available values in response\n");
                /* set the max resource in the vf */
                return -ENOMEM;
        }

        /* Set resources counters - 0 request means max available */
        vf_sb_count(vf) = resc->num_sbs;
        vf_rxq_count(vf) = resc->num_rxqs ? : bnx2x_vf_max_queue_cnt(bp, vf);
        vf_txq_count(vf) = resc->num_txqs ? : bnx2x_vf_max_queue_cnt(bp, vf);
        if (resc->num_mac_filters)
                vf_mac_rules_cnt(vf) = resc->num_mac_filters;
        /* Add an additional vlan filter credit for the hypervisor */
        bnx2x_iov_re_set_vlan_filters(bp, vf, resc->num_vlan_filters + 1);

        DP(BNX2X_MSG_IOV,
           "Fulfilling vf request: sb count %d, tx_count %d, rx_count %d, mac_rules_count %d, vlan_rules_count %d\n",
           vf_sb_count(vf), vf_rxq_count(vf),
           vf_txq_count(vf), vf_mac_rules_cnt(vf),
           vf_vlan_rules_visible_cnt(vf));

        /* Initialize the queues */
        if (!vf->vfqs) {
                DP(BNX2X_MSG_IOV, "vf->vfqs was not allocated\n");
                return -EINVAL;
        }

        for_each_vfq(vf, i) {
                struct bnx2x_vf_queue *q = vfq_get(vf, i);

                if (!q) {
                        BNX2X_ERR("q number %d was not allocated\n", i);
                        return -EINVAL;
                }

                q->index = i;
                q->cxt = &((base_cxt + i)->eth);
                q->cid = BNX2X_FIRST_VF_CID + base_vf_cid + i;

                DP(BNX2X_MSG_IOV, "VFQ[%d:%d]: index %d, cid 0x%x, cxt %p\n",
                   vf->abs_vfid, i, q->index, q->cid, q->cxt);

                /* init SP objects */
                bnx2x_vfq_init(bp, vf, q);
        }
        vf->state = VF_ACQUIRED;
        return 0;
}

int bnx2x_vf_init(struct bnx2x *bp, struct bnx2x_virtf *vf, dma_addr_t *sb_map)
{
        struct bnx2x_func_init_params func_init = {0};
        u16 flags = 0;
        int i;

        /* the sb resources are initialized at this point, do the
         * FW/HW initializations
         */
        for_each_vf_sb(vf, i)
                bnx2x_init_sb(bp, (dma_addr_t)sb_map[i], vf->abs_vfid, true,
                              vf_igu_sb(vf, i), vf_igu_sb(vf, i));

        /* Sanity checks */
        if (vf->state != VF_ACQUIRED) {
                DP(BNX2X_MSG_IOV, "VF[%d] is not in VF_ACQUIRED, but %d\n",
                   vf->abs_vfid, vf->state);
                return -EINVAL;
        }

        /* let FLR complete ... */
        msleep(100);

        /* FLR cleanup epilogue */
        if (bnx2x_vf_flr_clnup_epilog(bp, vf->abs_vfid))
                return -EBUSY;

        /* reset IGU VF statistics: MSIX */
        REG_WR(bp, IGU_REG_STATISTIC_NUM_MESSAGE_SENT + vf->abs_vfid * 4 , 0);

        /* vf init */
        if (vf->cfg_flags & VF_CFG_STATS)
                flags |= (FUNC_FLG_STATS | FUNC_FLG_SPQ);

        if (vf->cfg_flags & VF_CFG_TPA)
                flags |= FUNC_FLG_TPA;

        if (is_vf_multi(vf))
                flags |= FUNC_FLG_RSS;

        /* function setup */
        func_init.func_flgs = flags;
        func_init.pf_id = BP_FUNC(bp);
        func_init.func_id = FW_VF_HANDLE(vf->abs_vfid);
        func_init.fw_stat_map = vf->fw_stat_map;
        func_init.spq_map = vf->spq_map;
        func_init.spq_prod = 0;
        bnx2x_func_init(bp, &func_init);

        /* Enable the vf */
        bnx2x_vf_enable_access(bp, vf->abs_vfid);
        bnx2x_vf_enable_traffic(bp, vf);

        /* queue protection table */
        for_each_vfq(vf, i)
                bnx2x_vf_qtbl_set_q(bp, vf->abs_vfid,
                                    vfq_qzone_id(vf, vfq_get(vf, i)), true);

        vf->state = VF_ENABLED;

        /* update vf bulletin board */
        bnx2x_post_vf_bulletin(bp, vf->index);

        return 0;
}

struct set_vf_state_cookie {
        struct bnx2x_virtf *vf;
        u8 state;
};

static void bnx2x_set_vf_state(void *cookie)
{
        struct set_vf_state_cookie *p = (struct set_vf_state_cookie *)cookie;

        p->vf->state = p->state;
}

int bnx2x_vf_close(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        int rc = 0, i;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        /* Close all queues */
        for (i = 0; i < vf_rxq_count(vf); i++) {
                rc = bnx2x_vf_queue_teardown(bp, vf, i);
                if (rc)
                        goto op_err;
        }

        /* disable the interrupts */
        DP(BNX2X_MSG_IOV, "disabling igu\n");
        bnx2x_vf_igu_disable(bp, vf);

        /* disable the VF */
        DP(BNX2X_MSG_IOV, "clearing qtbl\n");
        bnx2x_vf_clr_qtbl(bp, vf);

        /* need to make sure there are no outstanding stats ramrods which may
         * cause the device to access the VF's stats buffer which it will free
         * as soon as we return from the close flow.
         */
        {
                struct set_vf_state_cookie cookie;

                cookie.vf = vf;
                cookie.state = VF_ACQUIRED;
                rc = bnx2x_stats_safe_exec(bp, bnx2x_set_vf_state, &cookie);
                if (rc)
                        goto op_err;
        }

        DP(BNX2X_MSG_IOV, "set state to acquired\n");

        return 0;
op_err:
        BNX2X_ERR("vf[%d] CLOSE error: rc %d\n", vf->abs_vfid, rc);
        return rc;
}

/* VF release can be called either: 1. The VF was acquired but
 * not enabled 2. the vf was enabled or in the process of being
 * enabled
 */
int bnx2x_vf_free(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        int rc;

        DP(BNX2X_MSG_IOV, "VF[%d] STATE: %s\n", vf->abs_vfid,
           vf->state == VF_FREE ? "Free" :
           vf->state == VF_ACQUIRED ? "Acquired" :
           vf->state == VF_ENABLED ? "Enabled" :
           vf->state == VF_RESET ? "Reset" :
           "Unknown");

        switch (vf->state) {
        case VF_ENABLED:
                rc = bnx2x_vf_close(bp, vf);
                if (rc)
                        goto op_err;
                /* Fallthrough to release resources */
        case VF_ACQUIRED:
                DP(BNX2X_MSG_IOV, "about to free resources\n");
                bnx2x_vf_free_resc(bp, vf);
                break;

        case VF_FREE:
        case VF_RESET:
        default:
                break;
        }
        return 0;
op_err:
        BNX2X_ERR("VF[%d] RELEASE error: rc %d\n", vf->abs_vfid, rc);
        return rc;
}

int bnx2x_vf_rss_update(struct bnx2x *bp, struct bnx2x_virtf *vf,
                        struct bnx2x_config_rss_params *rss)
{
        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
        set_bit(RAMROD_COMP_WAIT, &rss->ramrod_flags);
        return bnx2x_config_rss(bp, rss);
}

int bnx2x_vf_tpa_update(struct bnx2x *bp, struct bnx2x_virtf *vf,
                        struct vfpf_tpa_tlv *tlv,
                        struct bnx2x_queue_update_tpa_params *params)
{
        aligned_u64 *sge_addr = tlv->tpa_client_info.sge_addr;
        struct bnx2x_queue_state_params qstate;
        int qid, rc = 0;

        DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);

        /* Set ramrod params */
        memset(&qstate, 0, sizeof(struct bnx2x_queue_state_params));
        memcpy(&qstate.params.update_tpa, params,
               sizeof(struct bnx2x_queue_update_tpa_params));
        qstate.cmd = BNX2X_Q_CMD_UPDATE_TPA;
        set_bit(RAMROD_COMP_WAIT, &qstate.ramrod_flags);

        for (qid = 0; qid < vf_rxq_count(vf); qid++) {
                qstate.q_obj = &bnx2x_vfq(vf, qid, sp_obj);
                qstate.params.update_tpa.sge_map = sge_addr[qid];
                DP(BNX2X_MSG_IOV, "sge_addr[%d:%d] %08x:%08x\n",
                   vf->abs_vfid, qid, U64_HI(sge_addr[qid]),
                   U64_LO(sge_addr[qid]));
                rc = bnx2x_queue_state_change(bp, &qstate);
                if (rc) {
                        BNX2X_ERR("Failed to configure sge_addr %08x:%08x for [%d:%d]\n",
                                  U64_HI(sge_addr[qid]), U64_LO(sge_addr[qid]),
                                  vf->abs_vfid, qid);
                        return rc;
                }
        }

        return rc;
}

/* VF release ~ VF close + VF release-resources
 * Release is the ultimate SW shutdown and is called whenever an
 * irrecoverable error is encountered.
 */
int bnx2x_vf_release(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
        int rc;

        DP(BNX2X_MSG_IOV, "PF releasing vf %d\n", vf->abs_vfid);
        bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_RELEASE_VF);

        rc = bnx2x_vf_free(bp, vf);
        if (rc)
                WARN(rc,
                     "VF[%d] Failed to allocate resources for release op- rc=%d\n",
                     vf->abs_vfid, rc);
        bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_RELEASE_VF);
        return rc;
}

void bnx2x_lock_vf_pf_channel(struct bnx2x *bp, struct bnx2x_virtf *vf,
                              enum channel_tlvs tlv)
{
        /* we don't lock the channel for unsupported tlvs */
        if (!bnx2x_tlv_supported(tlv)) {
                BNX2X_ERR("attempting to lock with unsupported tlv. Aborting\n");
                return;
        }

        /* lock the channel */
        mutex_lock(&vf->op_mutex);

        /* record the locking op */
        vf->op_current = tlv;

        /* log the lock */
        DP(BNX2X_MSG_IOV, "VF[%d]: vf pf channel locked by %d\n",
           vf->abs_vfid, tlv);
}

void bnx2x_unlock_vf_pf_channel(struct bnx2x *bp, struct bnx2x_virtf *vf,
                                enum channel_tlvs expected_tlv)
{
        enum channel_tlvs current_tlv;

        if (!vf) {
                BNX2X_ERR("VF was %p\n", vf);
                return;
        }

        current_tlv = vf->op_current;

        /* we don't unlock the channel for unsupported tlvs */
        if (!bnx2x_tlv_supported(expected_tlv))
                return;

        WARN(expected_tlv != vf->op_current,
             "lock mismatch: expected %d found %d", expected_tlv,
             vf->op_current);

        /* record the locking op */
        vf->op_current = CHANNEL_TLV_NONE;

        /* lock the channel */
        mutex_unlock(&vf->op_mutex);

        /* log the unlock */
        DP(BNX2X_MSG_IOV, "VF[%d]: vf pf channel unlocked by %d\n",
           vf->abs_vfid, current_tlv);
}

static int bnx2x_set_pf_tx_switching(struct bnx2x *bp, bool enable)
{
        struct bnx2x_queue_state_params q_params;
        u32 prev_flags;
        int i, rc;

        /* Verify changes are needed and record current Tx switching state */
        prev_flags = bp->flags;
        if (enable)
                bp->flags |= TX_SWITCHING;
        else
                bp->flags &= ~TX_SWITCHING;
        if (prev_flags == bp->flags)
                return 0;

        /* Verify state enables the sending of queue ramrods */
        if ((bp->state != BNX2X_STATE_OPEN) ||
            (bnx2x_get_q_logical_state(bp,
                                      &bnx2x_sp_obj(bp, &bp->fp[0]).q_obj) !=
             BNX2X_Q_LOGICAL_STATE_ACTIVE))
                return 0;

        /* send q. update ramrod to configure Tx switching */
        memset(&q_params, 0, sizeof(q_params));
        __set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
        q_params.cmd = BNX2X_Q_CMD_UPDATE;
        __set_bit(BNX2X_Q_UPDATE_TX_SWITCHING_CHNG,
                  &q_params.params.update.update_flags);
        if (enable)
                __set_bit(BNX2X_Q_UPDATE_TX_SWITCHING,
                          &q_params.params.update.update_flags);
        else
                __clear_bit(BNX2X_Q_UPDATE_TX_SWITCHING,
                            &q_params.params.update.update_flags);

        /* send the ramrod on all the queues of the PF */
        for_each_eth_queue(bp, i) {
                struct bnx2x_fastpath *fp = &bp->fp[i];

                /* Set the appropriate Queue object */
                q_params.q_obj = &bnx2x_sp_obj(bp, fp).q_obj;

                /* Update the Queue state */
                rc = bnx2x_queue_state_change(bp, &q_params);
                if (rc) {
                        BNX2X_ERR("Failed to configure Tx switching\n");
                        return rc;
                }
        }

        DP(BNX2X_MSG_IOV, "%s Tx Switching\n", enable ? "Enabled" : "Disabled");
        return 0;
}

int bnx2x_sriov_configure(struct pci_dev *dev, int num_vfs_param)
{
        struct bnx2x *bp = netdev_priv(pci_get_drvdata(dev));

        if (!IS_SRIOV(bp)) {
                BNX2X_ERR("failed to configure SR-IOV since vfdb was not allocated. Check dmesg for errors in probe stage\n");
                return -EINVAL;
        }

        DP(BNX2X_MSG_IOV, "bnx2x_sriov_configure called with %d, BNX2X_NR_VIRTFN(bp) was %d\n",
           num_vfs_param, BNX2X_NR_VIRTFN(bp));

        /* HW channel is only operational when PF is up */
        if (bp->state != BNX2X_STATE_OPEN) {
                BNX2X_ERR("VF num configuration via sysfs not supported while PF is down\n");
                return -EINVAL;
        }

        /* we are always bound by the total_vfs in the configuration space */
        if (num_vfs_param > BNX2X_NR_VIRTFN(bp)) {
                BNX2X_ERR("truncating requested number of VFs (%d) down to maximum allowed (%d)\n",
                          num_vfs_param, BNX2X_NR_VIRTFN(bp));
                num_vfs_param = BNX2X_NR_VIRTFN(bp);
        }

        bp->requested_nr_virtfn = num_vfs_param;
        if (num_vfs_param == 0) {
                bnx2x_set_pf_tx_switching(bp, false);
                bnx2x_disable_sriov(bp);
                return 0;
        } else {
                return bnx2x_enable_sriov(bp);
        }
}

#define IGU_ENTRY_SIZE 4

int bnx2x_enable_sriov(struct bnx2x *bp)
{
        int rc = 0, req_vfs = bp->requested_nr_virtfn;
        int vf_idx, sb_idx, vfq_idx, qcount, first_vf;
        u32 igu_entry, address;
        u16 num_vf_queues;

        if (req_vfs == 0)
                return 0;

        first_vf = bp->vfdb->sriov.first_vf_in_pf;

        /* statically distribute vf sb pool between VFs */
        num_vf_queues = min_t(u16, BNX2X_VF_MAX_QUEUES,
                              BP_VFDB(bp)->vf_sbs_pool / req_vfs);

        /* zero previous values learned from igu cam */
        for (vf_idx = 0; vf_idx < req_vfs; vf_idx++) {
                struct bnx2x_virtf *vf = BP_VF(bp, vf_idx);

                vf->sb_count = 0;
                vf_sb_count(BP_VF(bp, vf_idx)) = 0;
        }
        bp->vfdb->vf_sbs_pool = 0;

        /* prepare IGU cam */
        sb_idx = BP_VFDB(bp)->first_vf_igu_entry;
        address = IGU_REG_MAPPING_MEMORY + sb_idx * IGU_ENTRY_SIZE;
        for (vf_idx = first_vf; vf_idx < first_vf + req_vfs; vf_idx++) {
                for (vfq_idx = 0; vfq_idx < num_vf_queues; vfq_idx++) {
                        igu_entry = vf_idx << IGU_REG_MAPPING_MEMORY_FID_SHIFT |
                                vfq_idx << IGU_REG_MAPPING_MEMORY_VECTOR_SHIFT |
                                IGU_REG_MAPPING_MEMORY_VALID;
                        DP(BNX2X_MSG_IOV, "assigning sb %d to vf %d\n",
                           sb_idx, vf_idx);
                        REG_WR(bp, address, igu_entry);
                        sb_idx++;
                        address += IGU_ENTRY_SIZE;
                }
        }

        /* Reinitialize vf database according to igu cam */
        bnx2x_get_vf_igu_cam_info(bp);

        DP(BNX2X_MSG_IOV, "vf_sbs_pool %d, num_vf_queues %d\n",
           BP_VFDB(bp)->vf_sbs_pool, num_vf_queues);

        qcount = 0;
        for_each_vf(bp, vf_idx) {
                struct bnx2x_virtf *vf = BP_VF(bp, vf_idx);

                /* set local queue arrays */
                vf->vfqs = &bp->vfdb->vfqs[qcount];
                qcount += vf_sb_count(vf);
                bnx2x_iov_static_resc(bp, vf);
        }

        /* prepare msix vectors in VF configuration space - the value in the
         * PCI configuration space should be the index of the last entry,
         * namely one less than the actual size of the table
         */
        for (vf_idx = first_vf; vf_idx < first_vf + req_vfs; vf_idx++) {
                bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf_idx));
                REG_WR(bp, PCICFG_OFFSET + GRC_CONFIG_REG_VF_MSIX_CONTROL,
                       num_vf_queues - 1);
                DP(BNX2X_MSG_IOV, "set msix vec num in VF %d cfg space to %d\n",
                   vf_idx, num_vf_queues - 1);
        }
        bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));

        /* enable sriov. This will probe all the VFs, and consequentially cause
         * the "acquire" messages to appear on the VF PF channel.
         */
        DP(BNX2X_MSG_IOV, "about to call enable sriov\n");
        bnx2x_disable_sriov(bp);

        rc = bnx2x_set_pf_tx_switching(bp, true);
        if (rc)
                return rc;

        rc = pci_enable_sriov(bp->pdev, req_vfs);
        if (rc) {
                BNX2X_ERR("pci_enable_sriov failed with %d\n", rc);
                return rc;
        }
        DP(BNX2X_MSG_IOV, "sriov enabled (%d vfs)\n", req_vfs);
        return req_vfs;
}

void bnx2x_pf_set_vfs_vlan(struct bnx2x *bp)
{
        int vfidx;
        struct pf_vf_bulletin_content *bulletin;

        DP(BNX2X_MSG_IOV, "configuring vlan for VFs from sp-task\n");
        for_each_vf(bp, vfidx) {
        bulletin = BP_VF_BULLETIN(bp, vfidx);
                if (BP_VF(bp, vfidx)->cfg_flags & VF_CFG_VLAN)
                        bnx2x_set_vf_vlan(bp->dev, vfidx, bulletin->vlan, 0);
        }
}

void bnx2x_disable_sriov(struct bnx2x *bp)
{
        if (pci_vfs_assigned(bp->pdev)) {
                DP(BNX2X_MSG_IOV,
                   "Unloading driver while VFs are assigned - VFs will not be deallocated\n");
                return;
        }

        pci_disable_sriov(bp->pdev);
}

static int bnx2x_vf_op_prep(struct bnx2x *bp, int vfidx,
                            struct bnx2x_virtf **vf,
                            struct pf_vf_bulletin_content **bulletin,
                            bool test_queue)
{
        if (bp->state != BNX2X_STATE_OPEN) {
                BNX2X_ERR("PF is down - can't utilize iov-related functionality\n");
                return -EINVAL;
        }

        if (!IS_SRIOV(bp)) {
                BNX2X_ERR("sriov is disabled - can't utilize iov-related functionality\n");
                return -EINVAL;
        }

        if (vfidx >= BNX2X_NR_VIRTFN(bp)) {
                BNX2X_ERR("VF is uninitialized - can't utilize iov-related functionality. vfidx was %d BNX2X_NR_VIRTFN was %d\n",
                          vfidx, BNX2X_NR_VIRTFN(bp));
                return -EINVAL;
        }

        /* init members */
        *vf = BP_VF(bp, vfidx);
        *bulletin = BP_VF_BULLETIN(bp, vfidx);

        if (!*vf) {
                BNX2X_ERR("Unable to get VF structure for vfidx %d\n", vfidx);
                return -EINVAL;
        }

        if (test_queue && !(*vf)->vfqs) {
                BNX2X_ERR("vfqs struct is null. Was this invoked before dynamically enabling SR-IOV? vfidx was %d\n",
                          vfidx);
                return -EINVAL;
        }

        if (!*bulletin) {
                BNX2X_ERR("Bulletin Board struct is null for vfidx %d\n",
                          vfidx);
                return -EINVAL;
        }

        return 0;
}

int bnx2x_get_vf_config(struct net_device *dev, int vfidx,
                        struct ifla_vf_info *ivi)
{
        struct bnx2x *bp = netdev_priv(dev);
        struct bnx2x_virtf *vf = NULL;
        struct pf_vf_bulletin_content *bulletin = NULL;
        struct bnx2x_vlan_mac_obj *mac_obj;
        struct bnx2x_vlan_mac_obj *vlan_obj;
        int rc;

        /* sanity and init */
        rc = bnx2x_vf_op_prep(bp, vfidx, &vf, &bulletin, true);
        if (rc)
                return rc;

        mac_obj = &bnx2x_leading_vfq(vf, mac_obj);
        vlan_obj = &bnx2x_leading_vfq(vf, vlan_obj);
        if (!mac_obj || !vlan_obj) {
                BNX2X_ERR("VF partially initialized\n");
                return -EINVAL;
        }

        ivi->vf = vfidx;
        ivi->qos = 0;
        ivi->max_tx_rate = 10000; /* always 10G. TBA take from link struct */
        ivi->min_tx_rate = 0;
        ivi->spoofchk = 1; /*always enabled */
        if (vf->state == VF_ENABLED) {
                /* mac and vlan are in vlan_mac objects */
                if (bnx2x_validate_vf_sp_objs(bp, vf, false)) {
                        mac_obj->get_n_elements(bp, mac_obj, 1, (u8 *)&ivi->mac,
                                                0, ETH_ALEN);
                        vlan_obj->get_n_elements(bp, vlan_obj, 1,
                                                 (u8 *)&ivi->vlan, 0,
                                                 VLAN_HLEN);
                }
        } else {
                mutex_lock(&bp->vfdb->bulletin_mutex);
                /* mac */
                if (bulletin->valid_bitmap & (1 << MAC_ADDR_VALID))
                        /* mac configured by ndo so its in bulletin board */
                        memcpy(&ivi->mac, bulletin->mac, ETH_ALEN);
                else
                        /* function has not been loaded yet. Show mac as 0s */
                        eth_zero_addr(ivi->mac);

                /* vlan */
                if (bulletin->valid_bitmap & (1 << VLAN_VALID))
                        /* vlan configured by ndo so its in bulletin board */
                        memcpy(&ivi->vlan, &bulletin->vlan, VLAN_HLEN);
                else
                        /* function has not been loaded yet. Show vlans as 0s */
                        memset(&ivi->vlan, 0, VLAN_HLEN);

                mutex_unlock(&bp->vfdb->bulletin_mutex);
        }

        return 0;
}

/* New mac for VF. Consider these cases:
 * 1. VF hasn't been acquired yet - save the mac in local bulletin board and
 *    supply at acquire.
 * 2. VF has already been acquired but has not yet initialized - store in local
 *    bulletin board. mac will be posted on VF bulletin board after VF init. VF
 *    will configure this mac when it is ready.
 * 3. VF has already initialized but has not yet setup a queue - post the new
 *    mac on VF's bulletin board right now. VF will configure this mac when it
 *    is ready.
 * 4. VF has already set a queue - delete any macs already configured for this
 *    queue and manually config the new mac.
 * In any event, once this function has been called refuse any attempts by the
 * VF to configure any mac for itself except for this mac. In case of a race
 * where the VF fails to see the new post on its bulletin board before sending a
 * mac configuration request, the PF will simply fail the request and VF can try
 * again after consulting its bulletin board.
 */
int bnx2x_set_vf_mac(struct net_device *dev, int vfidx, u8 *mac)
{
        struct bnx2x *bp = netdev_priv(dev);
        int rc, q_logical_state;
        struct bnx2x_virtf *vf = NULL;
        struct pf_vf_bulletin_content *bulletin = NULL;

        if (!is_valid_ether_addr(mac)) {
                BNX2X_ERR("mac address invalid\n");
                return -EINVAL;
        }

        /* sanity and init */
        rc = bnx2x_vf_op_prep(bp, vfidx, &vf, &bulletin, true);
        if (rc)
                return rc;

        mutex_lock(&bp->vfdb->bulletin_mutex);

        /* update PF's copy of the VF's bulletin. Will no longer accept mac
         * configuration requests from vf unless match this mac
         */
        bulletin->valid_bitmap |= 1 << MAC_ADDR_VALID;
        memcpy(bulletin->mac, mac, ETH_ALEN);

        /* Post update on VF's bulletin board */
        rc = bnx2x_post_vf_bulletin(bp, vfidx);

        /* release lock before checking return code */
        mutex_unlock(&bp->vfdb->bulletin_mutex);

        if (rc) {
                BNX2X_ERR("failed to update VF[%d] bulletin\n", vfidx);
                return rc;
        }

        q_logical_state =
                bnx2x_get_q_logical_state(bp, &bnx2x_leading_vfq(vf, sp_obj));
        if (vf->state == VF_ENABLED &&
            q_logical_state == BNX2X_Q_LOGICAL_STATE_ACTIVE) {
                /* configure the mac in device on this vf's queue */
                unsigned long ramrod_flags = 0;
                struct bnx2x_vlan_mac_obj *mac_obj;

                /* User should be able to see failure reason in system logs */
                if (!bnx2x_validate_vf_sp_objs(bp, vf, true))
                        return -EINVAL;

                /* must lock vfpf channel to protect against vf flows */
                bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_MAC);

                /* remove existing eth macs */
                mac_obj = &bnx2x_leading_vfq(vf, mac_obj);
                rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_ETH_MAC, true);
                if (rc) {
                        BNX2X_ERR("failed to delete eth macs\n");
                        rc = -EINVAL;
                        goto out;
                }

                /* remove existing uc list macs */
                rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_UC_LIST_MAC, true);
                if (rc) {
                        BNX2X_ERR("failed to delete uc_list macs\n");
                        rc = -EINVAL;
                        goto out;
                }

                /* configure the new mac to device */
                __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
                bnx2x_set_mac_one(bp, (u8 *)&bulletin->mac, mac_obj, true,
                                  BNX2X_ETH_MAC, &ramrod_flags);

out:
                bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_MAC);
        }

        return rc;
}

int bnx2x_set_vf_vlan(struct net_device *dev, int vfidx, u16 vlan, u8 qos)
{
        struct bnx2x_queue_state_params q_params = {NULL};
        struct bnx2x_vlan_mac_ramrod_params ramrod_param;
        struct bnx2x_queue_update_params *update_params;
        struct pf_vf_bulletin_content *bulletin = NULL;
        struct bnx2x_rx_mode_ramrod_params rx_ramrod;
        struct bnx2x *bp = netdev_priv(dev);
        struct bnx2x_vlan_mac_obj *vlan_obj;
        unsigned long vlan_mac_flags = 0;
        unsigned long ramrod_flags = 0;
        struct bnx2x_virtf *vf = NULL;
        unsigned long accept_flags;
        int rc;

        if (vlan > 4095) {
                BNX2X_ERR("illegal vlan value %d\n", vlan);
                return -EINVAL;
        }

        DP(BNX2X_MSG_IOV, "configuring VF %d with VLAN %d qos %d\n",
           vfidx, vlan, 0);

        /* sanity and init */
        rc = bnx2x_vf_op_prep(bp, vfidx, &vf, &bulletin, true);
        if (rc)
                return rc;

        /* update PF's copy of the VF's bulletin. No point in posting the vlan
         * to the VF since it doesn't have anything to do with it. But it useful
         * to store it here in case the VF is not up yet and we can only
         * configure the vlan later when it does. Treat vlan id 0 as remove the
         * Host tag.
         */
        mutex_lock(&bp->vfdb->bulletin_mutex);

        if (vlan > 0)
                bulletin->valid_bitmap |= 1 << VLAN_VALID;
        else
                bulletin->valid_bitmap &= ~(1 << VLAN_VALID);
        bulletin->vlan = vlan;

        mutex_unlock(&bp->vfdb->bulletin_mutex);

        /* is vf initialized and queue set up? */
        if (vf->state != VF_ENABLED ||
            bnx2x_get_q_logical_state(bp, &bnx2x_leading_vfq(vf, sp_obj)) !=
            BNX2X_Q_LOGICAL_STATE_ACTIVE)
                return rc;

        /* User should be able to see error in system logs */
        if (!bnx2x_validate_vf_sp_objs(bp, vf, true))
                return -EINVAL;

        /* must lock vfpf channel to protect against vf flows */
        bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_VLAN);

        /* remove existing vlans */
        __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
        vlan_obj = &bnx2x_leading_vfq(vf, vlan_obj);
        rc = vlan_obj->delete_all(bp, vlan_obj, &vlan_mac_flags,
                                  &ramrod_flags);
        if (rc) {
                BNX2X_ERR("failed to delete vlans\n");
                rc = -EINVAL;
                goto out;
        }

        /* need to remove/add the VF's accept_any_vlan bit */
        accept_flags = bnx2x_leading_vfq(vf, accept_flags);
        if (vlan)
                clear_bit(BNX2X_ACCEPT_ANY_VLAN, &accept_flags);
        else
                set_bit(BNX2X_ACCEPT_ANY_VLAN, &accept_flags);

        bnx2x_vf_prep_rx_mode(bp, LEADING_IDX, &rx_ramrod, vf,
                              accept_flags);
        bnx2x_leading_vfq(vf, accept_flags) = accept_flags;
        bnx2x_config_rx_mode(bp, &rx_ramrod);

        /* configure the new vlan to device */
        memset(&ramrod_param, 0, sizeof(ramrod_param));
        __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
        ramrod_param.vlan_mac_obj = vlan_obj;
        ramrod_param.ramrod_flags = ramrod_flags;
        set_bit(BNX2X_DONT_CONSUME_CAM_CREDIT,
                &ramrod_param.user_req.vlan_mac_flags);
        ramrod_param.user_req.u.vlan.vlan = vlan;
        ramrod_param.user_req.cmd = BNX2X_VLAN_MAC_ADD;
        rc = bnx2x_config_vlan_mac(bp, &ramrod_param);
        if (rc) {
                BNX2X_ERR("failed to configure vlan\n");
                rc =  -EINVAL;
                goto out;
        }

        /* send queue update ramrod to configure default vlan and silent
         * vlan removal
         */
        __set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
        q_params.cmd = BNX2X_Q_CMD_UPDATE;
        q_params.q_obj = &bnx2x_leading_vfq(vf, sp_obj);
        update_params = &q_params.params.update;
        __set_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN_CHNG,
                  &update_params->update_flags);
        __set_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM_CHNG,
                  &update_params->update_flags);
        if (vlan == 0) {
                /* if vlan is 0 then we want to leave the VF traffic
                 * untagged, and leave the incoming traffic untouched
                 * (i.e. do not remove any vlan tags).
                 */
                __clear_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN,
                            &update_params->update_flags);
                __clear_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM,
                            &update_params->update_flags);
        } else {
                /* configure default vlan to vf queue and set silent
                 * vlan removal (the vf remains unaware of this vlan).
                 */
                __set_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN,
                          &update_params->update_flags);
                __set_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM,
                          &update_params->update_flags);
                update_params->def_vlan = vlan;
                update_params->silent_removal_value =
                        vlan & VLAN_VID_MASK;
                update_params->silent_removal_mask = VLAN_VID_MASK;
        }

        /* Update the Queue state */
        rc = bnx2x_queue_state_change(bp, &q_params);
        if (rc) {
                BNX2X_ERR("Failed to configure default VLAN\n");
                goto out;
        }


        /* clear the flag indicating that this VF needs its vlan
         * (will only be set if the HV configured the Vlan before vf was
         * up and we were called because the VF came up later
         */
out:
        vf->cfg_flags &= ~VF_CFG_VLAN;
        bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_VLAN);

        return rc;
}

/* crc is the first field in the bulletin board. Compute the crc over the
 * entire bulletin board excluding the crc field itself. Use the length field
 * as the Bulletin Board was posted by a PF with possibly a different version
 * from the vf which will sample it. Therefore, the length is computed by the
 * PF and then used blindly by the VF.
 */
u32 bnx2x_crc_vf_bulletin(struct pf_vf_bulletin_content *bulletin)
{
        return crc32(BULLETIN_CRC_SEED,
                 ((u8 *)bulletin) + sizeof(bulletin->crc),
                 bulletin->length - sizeof(bulletin->crc));
}

/* Check for new posts on the bulletin board */
enum sample_bulletin_result bnx2x_sample_bulletin(struct bnx2x *bp)
{
        struct pf_vf_bulletin_content *bulletin;
        int attempts;

        /* sampling structure in mid post may result with corrupted data
         * validate crc to ensure coherency.
         */
        for (attempts = 0; attempts < BULLETIN_ATTEMPTS; attempts++) {
                u32 crc;

                /* sample the bulletin board */
                memcpy(&bp->shadow_bulletin, bp->pf2vf_bulletin,
                       sizeof(union pf_vf_bulletin));

                crc = bnx2x_crc_vf_bulletin(&bp->shadow_bulletin.content);

                if (bp->shadow_bulletin.content.crc == crc)
                        break;

                BNX2X_ERR("bad crc on bulletin board. Contained %x computed %x\n",
                          bp->shadow_bulletin.content.crc, crc);
        }

        if (attempts >= BULLETIN_ATTEMPTS) {
                BNX2X_ERR("pf to vf bulletin board crc was wrong %d consecutive times. Aborting\n",
                          attempts);