/* Broadcom NetXtreme-C/E network driver.
 *
 * Copyright (c) 2014-2016 Broadcom Corporation
 * Copyright (c) 2016-2018 Broadcom Limited
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 */

#include <linux/ethtool.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include <linux/interrupt.h>
#include <linux/etherdevice.h>
#include <net/dcbnl.h>
#include <linux/bnxt/hsi.h>
#include "bnxt.h"
#include "bnxt_hwrm.h"
#include "bnxt_ulp.h"
#include "bnxt_sriov.h"
#include "bnxt_vfr.h"
#include "bnxt_ethtool.h"

#ifdef CONFIG_BNXT_SRIOV
static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
                                          struct bnxt_vf_info *vf, u16 event_id)
{
        struct hwrm_fwd_async_event_cmpl_input *req;
        struct hwrm_async_event_cmpl *async_cmpl;
        int rc = 0;

        rc = hwrm_req_init(bp, req, HWRM_FWD_ASYNC_EVENT_CMPL);
        if (rc)
                goto exit;

        if (vf)
                req->encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
        else
                /* broadcast this async event to all VFs */
                req->encap_async_event_target_id = cpu_to_le16(0xffff);
        async_cmpl =
                (struct hwrm_async_event_cmpl *)req->encap_async_event_cmpl;
        async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
        async_cmpl->event_id = cpu_to_le16(event_id);

        rc = hwrm_req_send(bp, req);
exit:
        if (rc)
                netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
                           rc);
        return rc;
}

static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
{
        if (!bp->pf.active_vfs) {
                netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
                return -EINVAL;
        }
        if (vf_id >= bp->pf.active_vfs) {
                netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
                return -EINVAL;
        }
        return 0;
}

int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
{
        struct bnxt *bp = netdev_priv(dev);
        struct hwrm_func_cfg_input *req;
        bool old_setting = false;
        struct bnxt_vf_info *vf;
        u32 func_flags;
        int rc;

        if (bp->hwrm_spec_code < 0x10701)
                return -ENOTSUPP;

        rc = bnxt_vf_ndo_prep(bp, vf_id);
        if (rc)
                return rc;

        vf = &bp->pf.vf[vf_id];
        if (vf->flags & BNXT_VF_SPOOFCHK)
                old_setting = true;
        if (old_setting == setting)
                return 0;

        if (setting)
                func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
        else
                func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
        /*TODO: if the driver supports VLAN filter on guest VLAN,
         * the spoof check should also include vlan anti-spoofing
         */
        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (!rc) {
                req->fid = cpu_to_le16(vf->fw_fid);
                req->flags = cpu_to_le32(func_flags);
                rc = hwrm_req_send(bp, req);
                if (!rc) {
                        if (setting)
                                vf->flags |= BNXT_VF_SPOOFCHK;
                        else
                                vf->flags &= ~BNXT_VF_SPOOFCHK;
                }
        }
        return rc;
}

static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        struct hwrm_func_qcfg_output *resp;
        struct hwrm_func_qcfg_input *req;
        int rc;

        rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
        if (rc)
                return rc;

        req->fid = cpu_to_le16(BNXT_PF(bp) ? vf->fw_fid : 0xffff);
        resp = hwrm_req_hold(bp, req);
        rc = hwrm_req_send(bp, req);
        if (!rc)
                vf->func_qcfg_flags = le16_to_cpu(resp->flags);
        hwrm_req_drop(bp, req);
        return rc;
}

bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        if (BNXT_PF(bp) && !(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
                return !!(vf->flags & BNXT_VF_TRUST);

        bnxt_hwrm_func_qcfg_flags(bp, vf);
        return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
}

static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        struct hwrm_func_cfg_input *req;
        int rc;

        if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
                return 0;

        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (rc)
                return rc;

        req->fid = cpu_to_le16(vf->fw_fid);
        if (vf->flags & BNXT_VF_TRUST)
                req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
        else
                req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
        return hwrm_req_send(bp, req);
}

int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
{
        struct bnxt *bp = netdev_priv(dev);
        struct bnxt_vf_info *vf;

        if (bnxt_vf_ndo_prep(bp, vf_id))
                return -EINVAL;

        vf = &bp->pf.vf[vf_id];
        if (trusted)
                vf->flags |= BNXT_VF_TRUST;
        else
                vf->flags &= ~BNXT_VF_TRUST;

        bnxt_hwrm_set_trusted_vf(bp, vf);
        return 0;
}

int bnxt_get_vf_config(struct net_device *dev, int vf_id,
                       struct ifla_vf_info *ivi)
{
        struct bnxt *bp = netdev_priv(dev);
        struct bnxt_vf_info *vf;
        int rc;

        rc = bnxt_vf_ndo_prep(bp, vf_id);
        if (rc)
                return rc;

        ivi->vf = vf_id;
        vf = &bp->pf.vf[vf_id];

        if (is_valid_ether_addr(vf->mac_addr))
                memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
        else
                memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
        ivi->max_tx_rate = vf->max_tx_rate;
        ivi->min_tx_rate = vf->min_tx_rate;
        ivi->vlan = vf->vlan & VLAN_VID_MASK;
        ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
        ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
        ivi->trusted = bnxt_is_trusted_vf(bp, vf);
        if (!(vf->flags & BNXT_VF_LINK_FORCED))
                ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
        else if (vf->flags & BNXT_VF_LINK_UP)
                ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
        else
                ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;

        return 0;
}

int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
{
        struct bnxt *bp = netdev_priv(dev);
        struct hwrm_func_cfg_input *req;
        struct bnxt_vf_info *vf;
        int rc;

        rc = bnxt_vf_ndo_prep(bp, vf_id);
        if (rc)
                return rc;
        /* reject bc or mc mac addr, zero mac addr means allow
         * VF to use its own mac addr
         */
        if (is_multicast_ether_addr(mac)) {
                netdev_err(dev, "Invalid VF ethernet address\n");
                return -EINVAL;
        }
        vf = &bp->pf.vf[vf_id];

        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (rc)
                return rc;

        memcpy(vf->mac_addr, mac, ETH_ALEN);

        req->fid = cpu_to_le16(vf->fw_fid);
        req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
        memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
        return hwrm_req_send(bp, req);
}

int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
                     __be16 vlan_proto)
{
        struct bnxt *bp = netdev_priv(dev);
        struct hwrm_func_cfg_input *req;
        struct bnxt_vf_info *vf;
        u16 vlan_tag;
        int rc;

        if (bp->hwrm_spec_code < 0x10201)
                return -ENOTSUPP;

        if (vlan_proto != htons(ETH_P_8021Q) &&
            (vlan_proto != htons(ETH_P_8021AD) ||
             !(bp->fw_cap & BNXT_FW_CAP_DFLT_VLAN_TPID_PCP)))
                return -EPROTONOSUPPORT;

        rc = bnxt_vf_ndo_prep(bp, vf_id);
        if (rc)
                return rc;

        if (vlan_id >= VLAN_N_VID || qos >= IEEE_8021Q_MAX_PRIORITIES ||
            (!vlan_id && qos))
                return -EINVAL;

        vf = &bp->pf.vf[vf_id];
        vlan_tag = vlan_id | (u16)qos << VLAN_PRIO_SHIFT;
        if (vlan_tag == vf->vlan)
                return 0;

        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (!rc) {
                req->fid = cpu_to_le16(vf->fw_fid);
                req->dflt_vlan = cpu_to_le16(vlan_tag);
                req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
                if (bp->fw_cap & BNXT_FW_CAP_DFLT_VLAN_TPID_PCP) {
                        req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_TPID);
                        req->tpid = vlan_proto;
                }
                rc = hwrm_req_send(bp, req);
                if (!rc)
                        vf->vlan = vlan_tag;
        }
        return rc;
}

int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
                   int max_tx_rate)
{
        struct bnxt *bp = netdev_priv(dev);
        struct hwrm_func_cfg_input *req;
        struct bnxt_vf_info *vf;
        u32 pf_link_speed;
        int rc;

        rc = bnxt_vf_ndo_prep(bp, vf_id);
        if (rc)
                return rc;

        vf = &bp->pf.vf[vf_id];
        pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
        if (max_tx_rate > pf_link_speed) {
                netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
                            max_tx_rate, vf_id);
                return -EINVAL;
        }

        if (min_tx_rate > pf_link_speed) {
                netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
                            min_tx_rate, vf_id);
                return -EINVAL;
        }
        if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
                return 0;
        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (!rc) {
                req->fid = cpu_to_le16(vf->fw_fid);
                req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
                                           FUNC_CFG_REQ_ENABLES_MIN_BW);
                req->max_bw = cpu_to_le32(max_tx_rate);
                req->min_bw = cpu_to_le32(min_tx_rate);
                rc = hwrm_req_send(bp, req);
                if (!rc) {
                        vf->min_tx_rate = min_tx_rate;
                        vf->max_tx_rate = max_tx_rate;
                }
        }
        return rc;
}

static int bnxt_set_vf_link_admin_state(struct bnxt *bp, int vf_id)
{
        struct hwrm_func_cfg_input *req;
        struct bnxt_vf_info *vf;
        int rc;

        if (!(bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN))
                return 0;

        vf = &bp->pf.vf[vf_id];

        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (rc)
                return rc;

        req->fid = cpu_to_le16(vf->fw_fid);
        switch (vf->flags & (BNXT_VF_LINK_FORCED | BNXT_VF_LINK_UP)) {
        case BNXT_VF_LINK_FORCED:
                req->options =
                        FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_FORCED_DOWN;
                break;
        case (BNXT_VF_LINK_FORCED | BNXT_VF_LINK_UP):
                req->options = FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_FORCED_UP;
                break;
        default:
                req->options = FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_AUTO;
                break;
        }
        req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_LINK_STATE);
        return hwrm_req_send(bp, req);
}

int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
{
        struct bnxt *bp = netdev_priv(dev);
        struct bnxt_vf_info *vf;
        int rc;

        rc = bnxt_vf_ndo_prep(bp, vf_id);
        if (rc)
                return rc;

        vf = &bp->pf.vf[vf_id];

        vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
        switch (link) {
        case IFLA_VF_LINK_STATE_AUTO:
                vf->flags |= BNXT_VF_LINK_UP;
                break;
        case IFLA_VF_LINK_STATE_DISABLE:
                vf->flags |= BNXT_VF_LINK_FORCED;
                break;
        case IFLA_VF_LINK_STATE_ENABLE:
                vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
                break;
        default:
                netdev_err(bp->dev, "Invalid link option\n");
                return -EINVAL;
        }
        if (bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN)
                rc = bnxt_set_vf_link_admin_state(bp, vf_id);
        else if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
                rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
                        ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
        return rc;
}

static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
{
        int i;
        struct bnxt_vf_info *vf;

        for (i = 0; i < num_vfs; i++) {
                vf = &bp->pf.vf[i];
                memset(vf, 0, sizeof(*vf));
        }
        return 0;
}

static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
{
        struct hwrm_func_vf_resc_free_input *req;
        struct bnxt_pf_info *pf = &bp->pf;
        int i, rc;

        rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESC_FREE);
        if (rc)
                return rc;

        hwrm_req_hold(bp, req);
        for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
                req->vf_id = cpu_to_le16(i);
                rc = hwrm_req_send(bp, req);
                if (rc)
                        break;
        }
        hwrm_req_drop(bp, req);
        return rc;
}

static void bnxt_free_vf_resources(struct bnxt *bp)
{
        struct pci_dev *pdev = bp->pdev;
        int i;

        kfree(bp->pf.vf_event_bmap);
        bp->pf.vf_event_bmap = NULL;

        for (i = 0; i < 4; i++) {
                if (bp->pf.hwrm_cmd_req_addr[i]) {
                        dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
                                          bp->pf.hwrm_cmd_req_addr[i],
                                          bp->pf.hwrm_cmd_req_dma_addr[i]);
                        bp->pf.hwrm_cmd_req_addr[i] = NULL;
                }
        }

        bp->pf.active_vfs = 0;
        kfree(bp->pf.vf);
        bp->pf.vf = NULL;
}

static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
{
        struct pci_dev *pdev = bp->pdev;
        u32 nr_pages, size, i, j, k = 0;

        bp->pf.vf = kzalloc_objs(struct bnxt_vf_info, num_vfs);
        if (!bp->pf.vf)
                return -ENOMEM;

        bnxt_set_vf_attr(bp, num_vfs);

        size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
        nr_pages = size / BNXT_PAGE_SIZE;
        if (size & (BNXT_PAGE_SIZE - 1))
                nr_pages++;

        for (i = 0; i < nr_pages; i++) {
                bp->pf.hwrm_cmd_req_addr[i] =
                        dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
                                           &bp->pf.hwrm_cmd_req_dma_addr[i],
                                           GFP_KERNEL);

                if (!bp->pf.hwrm_cmd_req_addr[i])
                        return -ENOMEM;

                for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
                        struct bnxt_vf_info *vf = &bp->pf.vf[k];

                        vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
                                                j * BNXT_HWRM_REQ_MAX_SIZE;
                        vf->hwrm_cmd_req_dma_addr =
                                bp->pf.hwrm_cmd_req_dma_addr[i] + j *
                                BNXT_HWRM_REQ_MAX_SIZE;
                        k++;
                }
        }

        /* Max 128 VF's */
        bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
        if (!bp->pf.vf_event_bmap)
                return -ENOMEM;

        bp->pf.hwrm_cmd_req_pages = nr_pages;
        return 0;
}

static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
{
        struct hwrm_func_buf_rgtr_input *req;
        int rc;

        rc = hwrm_req_init(bp, req, HWRM_FUNC_BUF_RGTR);
        if (rc)
                return rc;

        req->req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
        req->req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
        req->req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
        req->req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
        req->req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
        req->req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
        req->req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);

        return hwrm_req_send(bp, req);
}

static int __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
{
        struct hwrm_func_cfg_input *req;
        struct bnxt_vf_info *vf;
        int rc;

        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (rc)
                return rc;

        vf = &bp->pf.vf[vf_id];
        req->fid = cpu_to_le16(vf->fw_fid);

        if (is_valid_ether_addr(vf->mac_addr)) {
                req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
                memcpy(req->dflt_mac_addr, vf->mac_addr, ETH_ALEN);
        }
        if (vf->vlan) {
                req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
                req->dflt_vlan = cpu_to_le16(vf->vlan);
        }
        if (vf->max_tx_rate) {
                req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
                                            FUNC_CFG_REQ_ENABLES_MIN_BW);
                req->max_bw = cpu_to_le32(vf->max_tx_rate);
                req->min_bw = cpu_to_le32(vf->min_tx_rate);
        }
        if (vf->flags & BNXT_VF_TRUST)
                req->flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);

        return hwrm_req_send(bp, req);
}

static void bnxt_hwrm_roce_sriov_cfg(struct bnxt *bp, int num_vfs)
{
        struct hwrm_func_qcaps_output *resp;
        struct hwrm_func_cfg_input *cfg_req;
        struct hwrm_func_qcaps_input *req;
        int rc;

        rc = hwrm_req_init(bp, req, HWRM_FUNC_QCAPS);
        if (rc)
                return;

        req->fid = cpu_to_le16(0xffff);
        resp = hwrm_req_hold(bp, req);
        rc = hwrm_req_send(bp, req);
        if (rc)
                goto err;

        rc = hwrm_req_init(bp, cfg_req, HWRM_FUNC_CFG);
        if (rc)
                goto err;

        /* In case of VF Dynamic resource allocation, driver will provision
         * maximum resources to all the VFs. FW will dynamically allocate
         * resources to VFs on the fly, so always divide the resources by 1.
         */
        if (BNXT_ROCE_VF_DYN_ALLOC_CAP(bp))
                num_vfs = 1;

        cfg_req->fid = cpu_to_le16(0xffff);
        cfg_req->enables2 =
                cpu_to_le32(FUNC_CFG_REQ_ENABLES2_ROCE_MAX_AV_PER_VF |
                            FUNC_CFG_REQ_ENABLES2_ROCE_MAX_CQ_PER_VF |
                            FUNC_CFG_REQ_ENABLES2_ROCE_MAX_MRW_PER_VF |
                            FUNC_CFG_REQ_ENABLES2_ROCE_MAX_QP_PER_VF |
                            FUNC_CFG_REQ_ENABLES2_ROCE_MAX_SRQ_PER_VF |
                            FUNC_CFG_REQ_ENABLES2_ROCE_MAX_GID_PER_VF);
        cfg_req->roce_max_av_per_vf =
                cpu_to_le32(le32_to_cpu(resp->roce_vf_max_av) / num_vfs);
        cfg_req->roce_max_cq_per_vf =
                cpu_to_le32(le32_to_cpu(resp->roce_vf_max_cq) / num_vfs);
        cfg_req->roce_max_mrw_per_vf =
                cpu_to_le32(le32_to_cpu(resp->roce_vf_max_mrw) / num_vfs);
        cfg_req->roce_max_qp_per_vf =
                cpu_to_le32(le32_to_cpu(resp->roce_vf_max_qp) / num_vfs);
        cfg_req->roce_max_srq_per_vf =
                cpu_to_le32(le32_to_cpu(resp->roce_vf_max_srq) / num_vfs);
        cfg_req->roce_max_gid_per_vf =
                cpu_to_le32(le32_to_cpu(resp->roce_vf_max_gid) / num_vfs);

        rc = hwrm_req_send(bp, cfg_req);

err:
        hwrm_req_drop(bp, req);
        if (rc)
                netdev_err(bp->dev, "RoCE sriov configuration failed\n");
}

/* Only called by PF to reserve resources for VFs, returns actual number of
 * VFs configured, or < 0 on error.
 */
static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
{
        struct hwrm_func_vf_resource_cfg_input *req;
        struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
        u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
        u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
        struct bnxt_pf_info *pf = &bp->pf;
        int i, rc = 0, min = 1;
        u16 vf_msix = 0;
        u16 vf_rss;

        rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESOURCE_CFG);
        if (rc)
                return rc;

        if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS) {
                vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
                vf_ring_grps = 0;
        } else {
                vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
        }
        vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
        vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
        if (bp->flags & BNXT_FLAG_AGG_RINGS)
                vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
        else
                vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
        vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
        vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
        vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;

        req->min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
        if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
                min = 0;
                req->min_rsscos_ctx = cpu_to_le16(min);
        }
        if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
            pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
                req->min_cmpl_rings = cpu_to_le16(min);
                req->min_tx_rings = cpu_to_le16(min);
                req->min_rx_rings = cpu_to_le16(min);
                req->min_l2_ctxs = cpu_to_le16(min);
                req->min_vnics = cpu_to_le16(min);
                req->min_stat_ctx = cpu_to_le16(min);
                if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS))
                        req->min_hw_ring_grps = cpu_to_le16(min);
        } else {
                vf_cp_rings /= num_vfs;
                vf_tx_rings /= num_vfs;
                vf_rx_rings /= num_vfs;
                if ((bp->fw_cap & BNXT_FW_CAP_PRE_RESV_VNICS) &&
                    vf_vnics >= pf->max_vfs) {
                        /* Take into account that FW has pre-reserved 1 VNIC for
                         * each pf->max_vfs.
                         */
                        vf_vnics = (vf_vnics - pf->max_vfs + num_vfs) / num_vfs;
                } else {
                        vf_vnics /= num_vfs;
                }
                vf_stat_ctx /= num_vfs;
                vf_ring_grps /= num_vfs;
                vf_rss /= num_vfs;

                vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
                req->min_cmpl_rings = cpu_to_le16(vf_cp_rings);
                req->min_tx_rings = cpu_to_le16(vf_tx_rings);
                req->min_rx_rings = cpu_to_le16(vf_rx_rings);
                req->min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
                req->min_vnics = cpu_to_le16(vf_vnics);
                req->min_stat_ctx = cpu_to_le16(vf_stat_ctx);
                req->min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
                req->min_rsscos_ctx = cpu_to_le16(vf_rss);
        }
        req->max_cmpl_rings = cpu_to_le16(vf_cp_rings);
        req->max_tx_rings = cpu_to_le16(vf_tx_rings);
        req->max_rx_rings = cpu_to_le16(vf_rx_rings);
        req->max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
        req->max_vnics = cpu_to_le16(vf_vnics);
        req->max_stat_ctx = cpu_to_le16(vf_stat_ctx);
        req->max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
        req->max_rsscos_ctx = cpu_to_le16(vf_rss);
        if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
                req->max_msix = cpu_to_le16(vf_msix / num_vfs);

        hwrm_req_hold(bp, req);
        for (i = 0; i < num_vfs; i++) {
                struct bnxt_vf_info *vf = &pf->vf[i];

                vf->fw_fid = pf->first_vf_id + i;
                rc = bnxt_set_vf_link_admin_state(bp, i);
                if (rc)
                        break;

                if (reset)
                        __bnxt_set_vf_params(bp, i);

                req->vf_id = cpu_to_le16(vf->fw_fid);
                rc = hwrm_req_send(bp, req);
                if (rc)
                        break;
                pf->active_vfs = i + 1;
        }

        if (pf->active_vfs) {
                u16 n = pf->active_vfs;

                hw_resc->max_tx_rings -= le16_to_cpu(req->min_tx_rings) * n;
                hw_resc->max_rx_rings -= le16_to_cpu(req->min_rx_rings) * n;
                hw_resc->max_hw_ring_grps -=
                        le16_to_cpu(req->min_hw_ring_grps) * n;
                hw_resc->max_cp_rings -= le16_to_cpu(req->min_cmpl_rings) * n;
                hw_resc->max_rsscos_ctxs -=
                        le16_to_cpu(req->min_rsscos_ctx) * n;
                hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
                hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
                if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
                        hw_resc->max_nqs -= vf_msix;

                rc = pf->active_vfs;
        }
        hwrm_req_drop(bp, req);
        return rc;
}

/* Only called by PF to reserve resources for VFs, returns actual number of
 * VFs configured, or < 0 on error.
 */
static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
{
        u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
        struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
        struct bnxt_pf_info *pf = &bp->pf;
        struct hwrm_func_cfg_input *req;
        int total_vf_tx_rings = 0;
        u16 vf_ring_grps;
        u32 mtu, i;
        int rc;

        rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
        if (rc)
                return rc;

        /* Remaining rings are distributed equally amongs VF's for now */
        vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
        vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
        if (bp->flags & BNXT_FLAG_AGG_RINGS)
                vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
                              num_vfs;
        else
                vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
                              num_vfs;
        vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
        vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
        vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
        vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);

        req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
                                   FUNC_CFG_REQ_ENABLES_MRU |
                                   FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
                                   FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
                                   FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
                                   FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
                                   FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
                                   FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
                                   FUNC_CFG_REQ_ENABLES_NUM_VNICS |
                                   FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);

        if (bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN) {
                req->options = FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_AUTO;
                req->enables |=
                        cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_LINK_STATE);
        }

        mtu = bp->dev->mtu + VLAN_ETH_HLEN;
        req->mru = cpu_to_le16(mtu);
        req->admin_mtu = cpu_to_le16(mtu);

        req->num_rsscos_ctxs = cpu_to_le16(1);
        req->num_cmpl_rings = cpu_to_le16(vf_cp_rings);
        req->num_tx_rings = cpu_to_le16(vf_tx_rings);
        req->num_rx_rings = cpu_to_le16(vf_rx_rings);
        req->num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
        req->num_l2_ctxs = cpu_to_le16(4);

        req->num_vnics = cpu_to_le16(vf_vnics);
        /* FIXME spec currently uses 1 bit for stats ctx */
        req->num_stat_ctxs = cpu_to_le16(vf_stat_ctx);

        hwrm_req_hold(bp, req);
        for (i = 0; i < num_vfs; i++) {
                int vf_tx_rsvd = vf_tx_rings;

                req->fid = cpu_to_le16(pf->first_vf_id + i);
                rc = hwrm_req_send(bp, req);
                if (rc)
                        break;
                pf->active_vfs = i + 1;
                pf->vf[i].fw_fid = le16_to_cpu(req->fid);
                rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
                                              &vf_tx_rsvd);
                if (rc)
                        break;
                total_vf_tx_rings += vf_tx_rsvd;
        }
        hwrm_req_drop(bp, req);
        if (pf->active_vfs) {
                hw_resc->max_tx_rings -= total_vf_tx_rings;
                hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
                hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
                hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
                hw_resc->max_rsscos_ctxs -= num_vfs;
                hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
                hw_resc->max_vnics -= vf_vnics * num_vfs;
                rc = pf->active_vfs;
        }
        return rc;
}

static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
{
        if (BNXT_NEW_RM(bp))
                return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
        else
                return bnxt_hwrm_func_cfg(bp, num_vfs);
}

int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
{
        int rc;

        /* Register buffers for VFs */
        rc = bnxt_hwrm_func_buf_rgtr(bp);
        if (rc)
                return rc;

        /* Reserve resources for VFs */
        rc = bnxt_func_cfg(bp, *num_vfs, reset);
        if (rc != *num_vfs) {
                if (rc <= 0) {
                        netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
                        *num_vfs = 0;
                        return rc;
                }
                netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
                            rc);
                *num_vfs = rc;
        }

        if (BNXT_RDMA_SRIOV_EN(bp) && BNXT_ROCE_VF_RESC_CAP(bp))
                bnxt_hwrm_roce_sriov_cfg(bp, *num_vfs);

        return 0;
}

static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
{
        int rc = 0, vfs_supported;
        int min_rx_rings, min_tx_rings, min_rss_ctxs;
        struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
        int tx_ok = 0, rx_ok = 0, rss_ok = 0;
        int avail_cp, avail_stat;

        /* Check if we can enable requested num of vf's. At a minimum
         * we require 1 RX 1 TX rings for each VF. In this minimum conf
         * features like TPA will not be available.
         */
        vfs_supported = *num_vfs;

        avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
        avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
        avail_cp = min_t(int, avail_cp, avail_stat);

        while (vfs_supported) {
                min_rx_rings = vfs_supported;
                min_tx_rings = vfs_supported;
                min_rss_ctxs = vfs_supported;

                if (bp->flags & BNXT_FLAG_AGG_RINGS) {
                        if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
                            min_rx_rings)
                                rx_ok = 1;
                } else {
                        if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
                            min_rx_rings)
                                rx_ok = 1;
                }
                if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
                    avail_cp < min_rx_rings)
                        rx_ok = 0;

                if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
                    avail_cp >= min_tx_rings)
                        tx_ok = 1;

                if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
                    min_rss_ctxs)
                        rss_ok = 1;

                if (tx_ok && rx_ok && rss_ok)
                        break;

                vfs_supported--;
        }

        if (!vfs_supported) {
                netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
                return -EINVAL;
        }

        if (vfs_supported != *num_vfs) {
                netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
                            *num_vfs, vfs_supported);
                *num_vfs = vfs_supported;
        }

        rc = bnxt_alloc_vf_resources(bp, *num_vfs);
        if (rc)
                goto err_out1;

        rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
        if (rc)
                goto err_out2;

        rc = pci_enable_sriov(bp->pdev, *num_vfs);
        if (rc)
                goto err_out2;

        if (bp->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
                return 0;

        /* Create representors for VFs in switchdev mode */
        devl_lock(bp->dl);
        rc = bnxt_vf_reps_create(bp);
        devl_unlock(bp->dl);
        if (rc) {
                netdev_info(bp->dev, "Cannot enable VFS as representors cannot be created\n");
                goto err_out3;
        }

        return 0;

err_out3:
        /* Disable SR-IOV */
        pci_disable_sriov(bp->pdev);

err_out2:
        /* Free the resources reserved for various VF's */
        bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);

        /* Restore the max resources */
        bnxt_hwrm_func_qcaps(bp);

err_out1:
        bnxt_free_vf_resources(bp);

        return rc;
}

void __bnxt_sriov_disable(struct bnxt *bp)
{
        u16 num_vfs = pci_num_vf(bp->pdev);

        if (!num_vfs)
                return;

        /* synchronize VF and VF-rep create and destroy */
        devl_lock(bp->dl);
        bnxt_vf_reps_destroy(bp);

        if (pci_vfs_assigned(bp->pdev)) {
                bnxt_hwrm_fwd_async_event_cmpl(
                        bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
                netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
                            num_vfs);
        } else {
                pci_disable_sriov(bp->pdev);
                /* Free the HW resources reserved for various VF's */
                bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
        }
        devl_unlock(bp->dl);

        bnxt_free_vf_resources(bp);
}

static void bnxt_sriov_disable(struct bnxt *bp)
{
        if (!pci_num_vf(bp->pdev))
                return;

        __bnxt_sriov_disable(bp);

        /* Reclaim all resources for the PF. */
        rtnl_lock();
        netdev_lock(bp->dev);
        bnxt_restore_pf_fw_resources(bp);
        netdev_unlock(bp->dev);
        rtnl_unlock();
}

int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
        struct net_device *dev = pci_get_drvdata(pdev);
        struct bnxt *bp = netdev_priv(dev);

        rtnl_lock();
        netdev_lock(dev);
        if (!netif_running(dev)) {
                netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
                netdev_unlock(dev);
                rtnl_unlock();
                return 0;
        }
        if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
                netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
                netdev_unlock(dev);
                rtnl_unlock();
                return 0;
        }
        bp->sriov_cfg = true;
        netdev_unlock(dev);
        rtnl_unlock();

        if (pci_vfs_assigned(bp->pdev)) {
                netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
                num_vfs = 0;
                goto sriov_cfg_exit;
        }

        /* Check if enabled VFs is same as requested */
        if (num_vfs && num_vfs == bp->pf.active_vfs)
                goto sriov_cfg_exit;

        /* if there are previous existing VFs, clean them up */
        bnxt_sriov_disable(bp);
        if (!num_vfs)
                goto sriov_cfg_exit;

        bnxt_sriov_enable(bp, &num_vfs);

sriov_cfg_exit:
        bp->sriov_cfg = false;
        wake_up(&bp->sriov_cfg_wait);

        return num_vfs;
}

static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
                              void *encap_resp, __le64 encap_resp_addr,
                              __le16 encap_resp_cpr, u32 msg_size)
{
        struct hwrm_fwd_resp_input *req;
        int rc;

        if (BNXT_FWD_RESP_SIZE_ERR(msg_size)) {
                netdev_warn_once(bp->dev, "HWRM fwd response too big (%d bytes)\n",
                                 msg_size);
                return -EINVAL;
        }

        rc = hwrm_req_init(bp, req, HWRM_FWD_RESP);
        if (!rc) {
                /* Set the new target id */
                req->target_id = cpu_to_le16(vf->fw_fid);
                req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
                req->encap_resp_len = cpu_to_le16(msg_size);
                req->encap_resp_addr = encap_resp_addr;
                req->encap_resp_cmpl_ring = encap_resp_cpr;
                memcpy(req->encap_resp, encap_resp, msg_size);

                rc = hwrm_req_send(bp, req);
        }
        if (rc)
                netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
        return rc;
}

static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
                                  u32 msg_size)
{
        struct hwrm_reject_fwd_resp_input *req;
        int rc;

        if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
                return -EINVAL;

        rc = hwrm_req_init(bp, req, HWRM_REJECT_FWD_RESP);
        if (!rc) {
                /* Set the new target id */
                req->target_id = cpu_to_le16(vf->fw_fid);
                req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
                memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);

                rc = hwrm_req_send(bp, req);
        }
        if (rc)
                netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
        return rc;
}

static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
                                   u32 msg_size)
{
        struct hwrm_exec_fwd_resp_input *req;
        int rc;

        if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
                return -EINVAL;

        rc = hwrm_req_init(bp, req, HWRM_EXEC_FWD_RESP);
        if (!rc) {
                /* Set the new target id */
                req->target_id = cpu_to_le16(vf->fw_fid);
                req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
                memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);

                rc = hwrm_req_send(bp, req);
        }
        if (rc)
                netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
        return rc;
}

static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
        struct hwrm_func_vf_cfg_input *req =
                (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;

        /* Allow VF to set a valid MAC address, if trust is set to on or
         * if the PF assigned MAC address is zero
         */
        if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
                bool trust = bnxt_is_trusted_vf(bp, vf);

                if (is_valid_ether_addr(req->dflt_mac_addr) &&
                    (trust || !is_valid_ether_addr(vf->mac_addr) ||
                     ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
                        ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
                        return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
                }
                return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
        }
        return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
}

static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
        struct hwrm_cfa_l2_filter_alloc_input *req =
                (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
        bool mac_ok = false;

        if (!is_valid_ether_addr((const u8 *)req->l2_addr))
                return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);

        /* Allow VF to set a valid MAC address, if trust is set to on.
         * Or VF MAC address must first match MAC address in PF's context.
         * Otherwise, it must match the VF MAC address if firmware spec >=
         * 1.2.2
         */
        if (bnxt_is_trusted_vf(bp, vf)) {
                mac_ok = true;
        } else if (is_valid_ether_addr(vf->mac_addr)) {
                if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
                        mac_ok = true;
        } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
                if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
                        mac_ok = true;
        } else {
                /* There are two cases:
                 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
                 *   to the PF and so it doesn't have to match
                 * 2.Allow VF to modify its own MAC when PF has not assigned a
                 *   valid MAC address and firmware spec >= 0x10202
                 */
                mac_ok = true;
        }
        if (mac_ok)
                return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
        return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
}

static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        int rc = 0;

        if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
                /* real link */
                rc = bnxt_hwrm_exec_fwd_resp(
                        bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
        } else {
                struct hwrm_port_phy_qcfg_output_compat phy_qcfg_resp = {};
                struct hwrm_port_phy_qcfg_input *phy_qcfg_req;

                phy_qcfg_req =
                (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
                mutex_lock(&bp->link_lock);
                memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
                       sizeof(phy_qcfg_resp));
                mutex_unlock(&bp->link_lock);
                phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
                phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
                /* New SPEEDS2 fields are beyond the legacy structure, so
                 * clear the SPEEDS2_SUPPORTED flag.
                 */
                phy_qcfg_resp.option_flags &=
                        ~PORT_PHY_QCAPS_RESP_FLAGS2_SPEEDS2_SUPPORTED;
                phy_qcfg_resp.valid = 1;

                if (vf->flags & BNXT_VF_LINK_UP) {
                        /* if physical link is down, force link up on VF */
                        if (phy_qcfg_resp.link !=
                            PORT_PHY_QCFG_RESP_LINK_LINK) {
                                phy_qcfg_resp.link =
                                        PORT_PHY_QCFG_RESP_LINK_LINK;
                                phy_qcfg_resp.link_speed = cpu_to_le16(
                                        PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
                                phy_qcfg_resp.duplex_cfg =
                                        PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
                                phy_qcfg_resp.duplex_state =
                                        PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
                                phy_qcfg_resp.pause =
                                        (PORT_PHY_QCFG_RESP_PAUSE_TX |
                                         PORT_PHY_QCFG_RESP_PAUSE_RX);
                        }
                } else {
                        /* force link down */
                        phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
                        phy_qcfg_resp.link_speed = 0;
                        phy_qcfg_resp.duplex_state =
                                PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
                        phy_qcfg_resp.pause = 0;
                }
                rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
                                        phy_qcfg_req->resp_addr,
                                        phy_qcfg_req->cmpl_ring,
                                        sizeof(phy_qcfg_resp));
        }
        return rc;
}

static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
{
        int rc = 0;
        struct input *encap_req = vf->hwrm_cmd_req_addr;
        u32 req_type = le16_to_cpu(encap_req->req_type);

        switch (req_type) {
        case HWRM_FUNC_VF_CFG:
                rc = bnxt_vf_configure_mac(bp, vf);
                break;
        case HWRM_CFA_L2_FILTER_ALLOC:
                rc = bnxt_vf_validate_set_mac(bp, vf);
                break;
        case HWRM_FUNC_CFG:
                /* TODO Validate if VF is allowed to change mac address,
                 * mtu, num of rings etc
                 */
                rc = bnxt_hwrm_exec_fwd_resp(
                        bp, vf, sizeof(struct hwrm_func_cfg_input));
                break;
        case HWRM_PORT_PHY_QCFG:
                rc = bnxt_vf_set_link(bp, vf);
                break;
        default:
                break;
        }
        return rc;
}

void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
{
        u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;

        /* Scan through VF's and process commands */
        while (1) {
                vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
                if (vf_id >= active_vfs)
                        break;

                clear_bit(vf_id, bp->pf.vf_event_bmap);
                bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
                i = vf_id + 1;
        }
}

int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
{
        struct hwrm_func_vf_cfg_input *req;
        int rc = 0;

        if (!BNXT_VF(bp))
                return 0;

        if (bp->hwrm_spec_code < 0x10202) {
                if (is_valid_ether_addr(bp->vf.mac_addr))
                        rc = -EADDRNOTAVAIL;
                goto mac_done;
        }

        rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
        if (rc)
                goto mac_done;

        req->enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
        memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
        if (!strict)
                hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
        rc = hwrm_req_send(bp, req);
mac_done:
        if (rc && strict) {
                rc = -EADDRNOTAVAIL;
                netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
                            mac);
                return rc;
        }
        return 0;
}

void bnxt_update_vf_mac(struct bnxt *bp)
{
        struct hwrm_func_qcaps_output *resp;
        struct hwrm_func_qcaps_input *req;
        bool inform_pf = false;

        if (hwrm_req_init(bp, req, HWRM_FUNC_QCAPS))
                return;

        req->fid = cpu_to_le16(0xffff);

        resp = hwrm_req_hold(bp, req);
        if (hwrm_req_send(bp, req))
                goto update_vf_mac_exit;

        /* Store MAC address from the firmware.  There are 2 cases:
         * 1. MAC address is valid.  It is assigned from the PF and we
         *    need to override the current VF MAC address with it.
         * 2. MAC address is zero.  The VF will use a random MAC address by
         *    default but the stored zero MAC will allow the VF user to change
         *    the random MAC address using ndo_set_mac_address() if he wants.
         */
        if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr)) {
                memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
                /* This means we are now using our own MAC address, let
                 * the PF know about this MAC address.
                 */
                if (!is_valid_ether_addr(bp->vf.mac_addr))
                        inform_pf = true;
        }

        /* overwrite netdev dev_addr with admin VF MAC */
        if (is_valid_ether_addr(bp->vf.mac_addr))
                eth_hw_addr_set(bp->dev, bp->vf.mac_addr);
update_vf_mac_exit:
        hwrm_req_drop(bp, req);
        if (inform_pf)
                bnxt_approve_mac(bp, bp->dev->dev_addr, false);
}

#else

int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
{
        if (*num_vfs)
                return -EOPNOTSUPP;
        return 0;
}

void __bnxt_sriov_disable(struct bnxt *bp)
{
}

void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
{
        netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
}

void bnxt_update_vf_mac(struct bnxt *bp)
{
}

int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
{
        return 0;
}
#endif