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0001 /* Broadcom NetXtreme-C/E network driver.
0002  *
0003  * Copyright (c) 2014-2016 Broadcom Corporation
0004  * Copyright (c) 2016-2018 Broadcom Limited
0005  *
0006  * This program is free software; you can redistribute it and/or modify
0007  * it under the terms of the GNU General Public License as published by
0008  * the Free Software Foundation.
0009  */
0010 
0011 #include <linux/ethtool.h>
0012 #include <linux/module.h>
0013 #include <linux/pci.h>
0014 #include <linux/netdevice.h>
0015 #include <linux/if_vlan.h>
0016 #include <linux/interrupt.h>
0017 #include <linux/etherdevice.h>
0018 #include "bnxt_hsi.h"
0019 #include "bnxt.h"
0020 #include "bnxt_hwrm.h"
0021 #include "bnxt_ulp.h"
0022 #include "bnxt_sriov.h"
0023 #include "bnxt_vfr.h"
0024 #include "bnxt_ethtool.h"
0025 
0026 #ifdef CONFIG_BNXT_SRIOV
0027 static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
0028                       struct bnxt_vf_info *vf, u16 event_id)
0029 {
0030     struct hwrm_fwd_async_event_cmpl_input *req;
0031     struct hwrm_async_event_cmpl *async_cmpl;
0032     int rc = 0;
0033 
0034     rc = hwrm_req_init(bp, req, HWRM_FWD_ASYNC_EVENT_CMPL);
0035     if (rc)
0036         goto exit;
0037 
0038     if (vf)
0039         req->encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
0040     else
0041         /* broadcast this async event to all VFs */
0042         req->encap_async_event_target_id = cpu_to_le16(0xffff);
0043     async_cmpl =
0044         (struct hwrm_async_event_cmpl *)req->encap_async_event_cmpl;
0045     async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
0046     async_cmpl->event_id = cpu_to_le16(event_id);
0047 
0048     rc = hwrm_req_send(bp, req);
0049 exit:
0050     if (rc)
0051         netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
0052                rc);
0053     return rc;
0054 }
0055 
0056 static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
0057 {
0058     if (!bp->pf.active_vfs) {
0059         netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
0060         return -EINVAL;
0061     }
0062     if (vf_id >= bp->pf.active_vfs) {
0063         netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
0064         return -EINVAL;
0065     }
0066     return 0;
0067 }
0068 
0069 int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
0070 {
0071     struct bnxt *bp = netdev_priv(dev);
0072     struct hwrm_func_cfg_input *req;
0073     bool old_setting = false;
0074     struct bnxt_vf_info *vf;
0075     u32 func_flags;
0076     int rc;
0077 
0078     if (bp->hwrm_spec_code < 0x10701)
0079         return -ENOTSUPP;
0080 
0081     rc = bnxt_vf_ndo_prep(bp, vf_id);
0082     if (rc)
0083         return rc;
0084 
0085     vf = &bp->pf.vf[vf_id];
0086     if (vf->flags & BNXT_VF_SPOOFCHK)
0087         old_setting = true;
0088     if (old_setting == setting)
0089         return 0;
0090 
0091     if (setting)
0092         func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
0093     else
0094         func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
0095     /*TODO: if the driver supports VLAN filter on guest VLAN,
0096      * the spoof check should also include vlan anti-spoofing
0097      */
0098     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0099     if (!rc) {
0100         req->fid = cpu_to_le16(vf->fw_fid);
0101         req->flags = cpu_to_le32(func_flags);
0102         rc = hwrm_req_send(bp, req);
0103         if (!rc) {
0104             if (setting)
0105                 vf->flags |= BNXT_VF_SPOOFCHK;
0106             else
0107                 vf->flags &= ~BNXT_VF_SPOOFCHK;
0108         }
0109     }
0110     return rc;
0111 }
0112 
0113 static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
0114 {
0115     struct hwrm_func_qcfg_output *resp;
0116     struct hwrm_func_qcfg_input *req;
0117     int rc;
0118 
0119     rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
0120     if (rc)
0121         return rc;
0122 
0123     req->fid = cpu_to_le16(BNXT_PF(bp) ? vf->fw_fid : 0xffff);
0124     resp = hwrm_req_hold(bp, req);
0125     rc = hwrm_req_send(bp, req);
0126     if (!rc)
0127         vf->func_qcfg_flags = le16_to_cpu(resp->flags);
0128     hwrm_req_drop(bp, req);
0129     return rc;
0130 }
0131 
0132 bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
0133 {
0134     if (BNXT_PF(bp) && !(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
0135         return !!(vf->flags & BNXT_VF_TRUST);
0136 
0137     bnxt_hwrm_func_qcfg_flags(bp, vf);
0138     return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
0139 }
0140 
0141 static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
0142 {
0143     struct hwrm_func_cfg_input *req;
0144     int rc;
0145 
0146     if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
0147         return 0;
0148 
0149     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0150     if (rc)
0151         return rc;
0152 
0153     req->fid = cpu_to_le16(vf->fw_fid);
0154     if (vf->flags & BNXT_VF_TRUST)
0155         req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
0156     else
0157         req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
0158     return hwrm_req_send(bp, req);
0159 }
0160 
0161 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
0162 {
0163     struct bnxt *bp = netdev_priv(dev);
0164     struct bnxt_vf_info *vf;
0165 
0166     if (bnxt_vf_ndo_prep(bp, vf_id))
0167         return -EINVAL;
0168 
0169     vf = &bp->pf.vf[vf_id];
0170     if (trusted)
0171         vf->flags |= BNXT_VF_TRUST;
0172     else
0173         vf->flags &= ~BNXT_VF_TRUST;
0174 
0175     bnxt_hwrm_set_trusted_vf(bp, vf);
0176     return 0;
0177 }
0178 
0179 int bnxt_get_vf_config(struct net_device *dev, int vf_id,
0180                struct ifla_vf_info *ivi)
0181 {
0182     struct bnxt *bp = netdev_priv(dev);
0183     struct bnxt_vf_info *vf;
0184     int rc;
0185 
0186     rc = bnxt_vf_ndo_prep(bp, vf_id);
0187     if (rc)
0188         return rc;
0189 
0190     ivi->vf = vf_id;
0191     vf = &bp->pf.vf[vf_id];
0192 
0193     if (is_valid_ether_addr(vf->mac_addr))
0194         memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
0195     else
0196         memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
0197     ivi->max_tx_rate = vf->max_tx_rate;
0198     ivi->min_tx_rate = vf->min_tx_rate;
0199     ivi->vlan = vf->vlan;
0200     if (vf->flags & BNXT_VF_QOS)
0201         ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
0202     else
0203         ivi->qos = 0;
0204     ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
0205     ivi->trusted = bnxt_is_trusted_vf(bp, vf);
0206     if (!(vf->flags & BNXT_VF_LINK_FORCED))
0207         ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
0208     else if (vf->flags & BNXT_VF_LINK_UP)
0209         ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
0210     else
0211         ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
0212 
0213     return 0;
0214 }
0215 
0216 int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
0217 {
0218     struct bnxt *bp = netdev_priv(dev);
0219     struct hwrm_func_cfg_input *req;
0220     struct bnxt_vf_info *vf;
0221     int rc;
0222 
0223     rc = bnxt_vf_ndo_prep(bp, vf_id);
0224     if (rc)
0225         return rc;
0226     /* reject bc or mc mac addr, zero mac addr means allow
0227      * VF to use its own mac addr
0228      */
0229     if (is_multicast_ether_addr(mac)) {
0230         netdev_err(dev, "Invalid VF ethernet address\n");
0231         return -EINVAL;
0232     }
0233     vf = &bp->pf.vf[vf_id];
0234 
0235     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0236     if (rc)
0237         return rc;
0238 
0239     memcpy(vf->mac_addr, mac, ETH_ALEN);
0240 
0241     req->fid = cpu_to_le16(vf->fw_fid);
0242     req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
0243     memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
0244     return hwrm_req_send(bp, req);
0245 }
0246 
0247 int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
0248              __be16 vlan_proto)
0249 {
0250     struct bnxt *bp = netdev_priv(dev);
0251     struct hwrm_func_cfg_input *req;
0252     struct bnxt_vf_info *vf;
0253     u16 vlan_tag;
0254     int rc;
0255 
0256     if (bp->hwrm_spec_code < 0x10201)
0257         return -ENOTSUPP;
0258 
0259     if (vlan_proto != htons(ETH_P_8021Q))
0260         return -EPROTONOSUPPORT;
0261 
0262     rc = bnxt_vf_ndo_prep(bp, vf_id);
0263     if (rc)
0264         return rc;
0265 
0266     /* TODO: needed to implement proper handling of user priority,
0267      * currently fail the command if there is valid priority
0268      */
0269     if (vlan_id > 4095 || qos)
0270         return -EINVAL;
0271 
0272     vf = &bp->pf.vf[vf_id];
0273     vlan_tag = vlan_id;
0274     if (vlan_tag == vf->vlan)
0275         return 0;
0276 
0277     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0278     if (!rc) {
0279         req->fid = cpu_to_le16(vf->fw_fid);
0280         req->dflt_vlan = cpu_to_le16(vlan_tag);
0281         req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
0282         rc = hwrm_req_send(bp, req);
0283         if (!rc)
0284             vf->vlan = vlan_tag;
0285     }
0286     return rc;
0287 }
0288 
0289 int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
0290            int max_tx_rate)
0291 {
0292     struct bnxt *bp = netdev_priv(dev);
0293     struct hwrm_func_cfg_input *req;
0294     struct bnxt_vf_info *vf;
0295     u32 pf_link_speed;
0296     int rc;
0297 
0298     rc = bnxt_vf_ndo_prep(bp, vf_id);
0299     if (rc)
0300         return rc;
0301 
0302     vf = &bp->pf.vf[vf_id];
0303     pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
0304     if (max_tx_rate > pf_link_speed) {
0305         netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
0306                 max_tx_rate, vf_id);
0307         return -EINVAL;
0308     }
0309 
0310     if (min_tx_rate > pf_link_speed) {
0311         netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
0312                 min_tx_rate, vf_id);
0313         return -EINVAL;
0314     }
0315     if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
0316         return 0;
0317     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0318     if (!rc) {
0319         req->fid = cpu_to_le16(vf->fw_fid);
0320         req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
0321                        FUNC_CFG_REQ_ENABLES_MIN_BW);
0322         req->max_bw = cpu_to_le32(max_tx_rate);
0323         req->min_bw = cpu_to_le32(min_tx_rate);
0324         rc = hwrm_req_send(bp, req);
0325         if (!rc) {
0326             vf->min_tx_rate = min_tx_rate;
0327             vf->max_tx_rate = max_tx_rate;
0328         }
0329     }
0330     return rc;
0331 }
0332 
0333 int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
0334 {
0335     struct bnxt *bp = netdev_priv(dev);
0336     struct bnxt_vf_info *vf;
0337     int rc;
0338 
0339     rc = bnxt_vf_ndo_prep(bp, vf_id);
0340     if (rc)
0341         return rc;
0342 
0343     vf = &bp->pf.vf[vf_id];
0344 
0345     vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
0346     switch (link) {
0347     case IFLA_VF_LINK_STATE_AUTO:
0348         vf->flags |= BNXT_VF_LINK_UP;
0349         break;
0350     case IFLA_VF_LINK_STATE_DISABLE:
0351         vf->flags |= BNXT_VF_LINK_FORCED;
0352         break;
0353     case IFLA_VF_LINK_STATE_ENABLE:
0354         vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
0355         break;
0356     default:
0357         netdev_err(bp->dev, "Invalid link option\n");
0358         rc = -EINVAL;
0359         break;
0360     }
0361     if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
0362         rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
0363             ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
0364     return rc;
0365 }
0366 
0367 static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
0368 {
0369     int i;
0370     struct bnxt_vf_info *vf;
0371 
0372     for (i = 0; i < num_vfs; i++) {
0373         vf = &bp->pf.vf[i];
0374         memset(vf, 0, sizeof(*vf));
0375     }
0376     return 0;
0377 }
0378 
0379 static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
0380 {
0381     struct hwrm_func_vf_resc_free_input *req;
0382     struct bnxt_pf_info *pf = &bp->pf;
0383     int i, rc;
0384 
0385     rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESC_FREE);
0386     if (rc)
0387         return rc;
0388 
0389     hwrm_req_hold(bp, req);
0390     for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
0391         req->vf_id = cpu_to_le16(i);
0392         rc = hwrm_req_send(bp, req);
0393         if (rc)
0394             break;
0395     }
0396     hwrm_req_drop(bp, req);
0397     return rc;
0398 }
0399 
0400 static void bnxt_free_vf_resources(struct bnxt *bp)
0401 {
0402     struct pci_dev *pdev = bp->pdev;
0403     int i;
0404 
0405     kfree(bp->pf.vf_event_bmap);
0406     bp->pf.vf_event_bmap = NULL;
0407 
0408     for (i = 0; i < 4; i++) {
0409         if (bp->pf.hwrm_cmd_req_addr[i]) {
0410             dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
0411                       bp->pf.hwrm_cmd_req_addr[i],
0412                       bp->pf.hwrm_cmd_req_dma_addr[i]);
0413             bp->pf.hwrm_cmd_req_addr[i] = NULL;
0414         }
0415     }
0416 
0417     bp->pf.active_vfs = 0;
0418     kfree(bp->pf.vf);
0419     bp->pf.vf = NULL;
0420 }
0421 
0422 static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
0423 {
0424     struct pci_dev *pdev = bp->pdev;
0425     u32 nr_pages, size, i, j, k = 0;
0426 
0427     bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
0428     if (!bp->pf.vf)
0429         return -ENOMEM;
0430 
0431     bnxt_set_vf_attr(bp, num_vfs);
0432 
0433     size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
0434     nr_pages = size / BNXT_PAGE_SIZE;
0435     if (size & (BNXT_PAGE_SIZE - 1))
0436         nr_pages++;
0437 
0438     for (i = 0; i < nr_pages; i++) {
0439         bp->pf.hwrm_cmd_req_addr[i] =
0440             dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
0441                        &bp->pf.hwrm_cmd_req_dma_addr[i],
0442                        GFP_KERNEL);
0443 
0444         if (!bp->pf.hwrm_cmd_req_addr[i])
0445             return -ENOMEM;
0446 
0447         for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
0448             struct bnxt_vf_info *vf = &bp->pf.vf[k];
0449 
0450             vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
0451                         j * BNXT_HWRM_REQ_MAX_SIZE;
0452             vf->hwrm_cmd_req_dma_addr =
0453                 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
0454                 BNXT_HWRM_REQ_MAX_SIZE;
0455             k++;
0456         }
0457     }
0458 
0459     /* Max 128 VF's */
0460     bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
0461     if (!bp->pf.vf_event_bmap)
0462         return -ENOMEM;
0463 
0464     bp->pf.hwrm_cmd_req_pages = nr_pages;
0465     return 0;
0466 }
0467 
0468 static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
0469 {
0470     struct hwrm_func_buf_rgtr_input *req;
0471     int rc;
0472 
0473     rc = hwrm_req_init(bp, req, HWRM_FUNC_BUF_RGTR);
0474     if (rc)
0475         return rc;
0476 
0477     req->req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
0478     req->req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
0479     req->req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
0480     req->req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
0481     req->req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
0482     req->req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
0483     req->req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
0484 
0485     return hwrm_req_send(bp, req);
0486 }
0487 
0488 static int __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
0489 {
0490     struct hwrm_func_cfg_input *req;
0491     struct bnxt_vf_info *vf;
0492     int rc;
0493 
0494     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0495     if (rc)
0496         return rc;
0497 
0498     vf = &bp->pf.vf[vf_id];
0499     req->fid = cpu_to_le16(vf->fw_fid);
0500 
0501     if (is_valid_ether_addr(vf->mac_addr)) {
0502         req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
0503         memcpy(req->dflt_mac_addr, vf->mac_addr, ETH_ALEN);
0504     }
0505     if (vf->vlan) {
0506         req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
0507         req->dflt_vlan = cpu_to_le16(vf->vlan);
0508     }
0509     if (vf->max_tx_rate) {
0510         req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
0511                         FUNC_CFG_REQ_ENABLES_MIN_BW);
0512         req->max_bw = cpu_to_le32(vf->max_tx_rate);
0513         req->min_bw = cpu_to_le32(vf->min_tx_rate);
0514     }
0515     if (vf->flags & BNXT_VF_TRUST)
0516         req->flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
0517 
0518     return hwrm_req_send(bp, req);
0519 }
0520 
0521 /* Only called by PF to reserve resources for VFs, returns actual number of
0522  * VFs configured, or < 0 on error.
0523  */
0524 static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
0525 {
0526     struct hwrm_func_vf_resource_cfg_input *req;
0527     struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
0528     u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
0529     u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
0530     struct bnxt_pf_info *pf = &bp->pf;
0531     int i, rc = 0, min = 1;
0532     u16 vf_msix = 0;
0533     u16 vf_rss;
0534 
0535     rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESOURCE_CFG);
0536     if (rc)
0537         return rc;
0538 
0539     if (bp->flags & BNXT_FLAG_CHIP_P5) {
0540         vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
0541         vf_ring_grps = 0;
0542     } else {
0543         vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
0544     }
0545     vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
0546     vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
0547     if (bp->flags & BNXT_FLAG_AGG_RINGS)
0548         vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
0549     else
0550         vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
0551     vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
0552     vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
0553     vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
0554     vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
0555 
0556     req->min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
0557     if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
0558         min = 0;
0559         req->min_rsscos_ctx = cpu_to_le16(min);
0560     }
0561     if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
0562         pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
0563         req->min_cmpl_rings = cpu_to_le16(min);
0564         req->min_tx_rings = cpu_to_le16(min);
0565         req->min_rx_rings = cpu_to_le16(min);
0566         req->min_l2_ctxs = cpu_to_le16(min);
0567         req->min_vnics = cpu_to_le16(min);
0568         req->min_stat_ctx = cpu_to_le16(min);
0569         if (!(bp->flags & BNXT_FLAG_CHIP_P5))
0570             req->min_hw_ring_grps = cpu_to_le16(min);
0571     } else {
0572         vf_cp_rings /= num_vfs;
0573         vf_tx_rings /= num_vfs;
0574         vf_rx_rings /= num_vfs;
0575         vf_vnics /= num_vfs;
0576         vf_stat_ctx /= num_vfs;
0577         vf_ring_grps /= num_vfs;
0578         vf_rss /= num_vfs;
0579 
0580         req->min_cmpl_rings = cpu_to_le16(vf_cp_rings);
0581         req->min_tx_rings = cpu_to_le16(vf_tx_rings);
0582         req->min_rx_rings = cpu_to_le16(vf_rx_rings);
0583         req->min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
0584         req->min_vnics = cpu_to_le16(vf_vnics);
0585         req->min_stat_ctx = cpu_to_le16(vf_stat_ctx);
0586         req->min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
0587         req->min_rsscos_ctx = cpu_to_le16(vf_rss);
0588     }
0589     req->max_cmpl_rings = cpu_to_le16(vf_cp_rings);
0590     req->max_tx_rings = cpu_to_le16(vf_tx_rings);
0591     req->max_rx_rings = cpu_to_le16(vf_rx_rings);
0592     req->max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
0593     req->max_vnics = cpu_to_le16(vf_vnics);
0594     req->max_stat_ctx = cpu_to_le16(vf_stat_ctx);
0595     req->max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
0596     req->max_rsscos_ctx = cpu_to_le16(vf_rss);
0597     if (bp->flags & BNXT_FLAG_CHIP_P5)
0598         req->max_msix = cpu_to_le16(vf_msix / num_vfs);
0599 
0600     hwrm_req_hold(bp, req);
0601     for (i = 0; i < num_vfs; i++) {
0602         if (reset)
0603             __bnxt_set_vf_params(bp, i);
0604 
0605         req->vf_id = cpu_to_le16(pf->first_vf_id + i);
0606         rc = hwrm_req_send(bp, req);
0607         if (rc)
0608             break;
0609         pf->active_vfs = i + 1;
0610         pf->vf[i].fw_fid = pf->first_vf_id + i;
0611     }
0612 
0613     if (pf->active_vfs) {
0614         u16 n = pf->active_vfs;
0615 
0616         hw_resc->max_tx_rings -= le16_to_cpu(req->min_tx_rings) * n;
0617         hw_resc->max_rx_rings -= le16_to_cpu(req->min_rx_rings) * n;
0618         hw_resc->max_hw_ring_grps -=
0619             le16_to_cpu(req->min_hw_ring_grps) * n;
0620         hw_resc->max_cp_rings -= le16_to_cpu(req->min_cmpl_rings) * n;
0621         hw_resc->max_rsscos_ctxs -=
0622             le16_to_cpu(req->min_rsscos_ctx) * n;
0623         hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
0624         hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
0625         if (bp->flags & BNXT_FLAG_CHIP_P5)
0626             hw_resc->max_nqs -= vf_msix;
0627 
0628         rc = pf->active_vfs;
0629     }
0630     hwrm_req_drop(bp, req);
0631     return rc;
0632 }
0633 
0634 /* Only called by PF to reserve resources for VFs, returns actual number of
0635  * VFs configured, or < 0 on error.
0636  */
0637 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
0638 {
0639     u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
0640     struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
0641     struct bnxt_pf_info *pf = &bp->pf;
0642     struct hwrm_func_cfg_input *req;
0643     int total_vf_tx_rings = 0;
0644     u16 vf_ring_grps;
0645     u32 mtu, i;
0646     int rc;
0647 
0648     rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
0649     if (rc)
0650         return rc;
0651 
0652     /* Remaining rings are distributed equally amongs VF's for now */
0653     vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
0654     vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
0655     if (bp->flags & BNXT_FLAG_AGG_RINGS)
0656         vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
0657                   num_vfs;
0658     else
0659         vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
0660                   num_vfs;
0661     vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
0662     vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
0663     vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
0664     vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
0665 
0666     req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
0667                    FUNC_CFG_REQ_ENABLES_MRU |
0668                    FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
0669                    FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
0670                    FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
0671                    FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
0672                    FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
0673                    FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
0674                    FUNC_CFG_REQ_ENABLES_NUM_VNICS |
0675                    FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
0676 
0677     mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
0678     req->mru = cpu_to_le16(mtu);
0679     req->admin_mtu = cpu_to_le16(mtu);
0680 
0681     req->num_rsscos_ctxs = cpu_to_le16(1);
0682     req->num_cmpl_rings = cpu_to_le16(vf_cp_rings);
0683     req->num_tx_rings = cpu_to_le16(vf_tx_rings);
0684     req->num_rx_rings = cpu_to_le16(vf_rx_rings);
0685     req->num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
0686     req->num_l2_ctxs = cpu_to_le16(4);
0687 
0688     req->num_vnics = cpu_to_le16(vf_vnics);
0689     /* FIXME spec currently uses 1 bit for stats ctx */
0690     req->num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
0691 
0692     hwrm_req_hold(bp, req);
0693     for (i = 0; i < num_vfs; i++) {
0694         int vf_tx_rsvd = vf_tx_rings;
0695 
0696         req->fid = cpu_to_le16(pf->first_vf_id + i);
0697         rc = hwrm_req_send(bp, req);
0698         if (rc)
0699             break;
0700         pf->active_vfs = i + 1;
0701         pf->vf[i].fw_fid = le16_to_cpu(req->fid);
0702         rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
0703                           &vf_tx_rsvd);
0704         if (rc)
0705             break;
0706         total_vf_tx_rings += vf_tx_rsvd;
0707     }
0708     hwrm_req_drop(bp, req);
0709     if (pf->active_vfs) {
0710         hw_resc->max_tx_rings -= total_vf_tx_rings;
0711         hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
0712         hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
0713         hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
0714         hw_resc->max_rsscos_ctxs -= num_vfs;
0715         hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
0716         hw_resc->max_vnics -= vf_vnics * num_vfs;
0717         rc = pf->active_vfs;
0718     }
0719     return rc;
0720 }
0721 
0722 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
0723 {
0724     if (BNXT_NEW_RM(bp))
0725         return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
0726     else
0727         return bnxt_hwrm_func_cfg(bp, num_vfs);
0728 }
0729 
0730 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
0731 {
0732     int rc;
0733 
0734     /* Register buffers for VFs */
0735     rc = bnxt_hwrm_func_buf_rgtr(bp);
0736     if (rc)
0737         return rc;
0738 
0739     /* Reserve resources for VFs */
0740     rc = bnxt_func_cfg(bp, *num_vfs, reset);
0741     if (rc != *num_vfs) {
0742         if (rc <= 0) {
0743             netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
0744             *num_vfs = 0;
0745             return rc;
0746         }
0747         netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
0748                 rc);
0749         *num_vfs = rc;
0750     }
0751 
0752     bnxt_ulp_sriov_cfg(bp, *num_vfs);
0753     return 0;
0754 }
0755 
0756 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
0757 {
0758     int rc = 0, vfs_supported;
0759     int min_rx_rings, min_tx_rings, min_rss_ctxs;
0760     struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
0761     int tx_ok = 0, rx_ok = 0, rss_ok = 0;
0762     int avail_cp, avail_stat;
0763 
0764     /* Check if we can enable requested num of vf's. At a mininum
0765      * we require 1 RX 1 TX rings for each VF. In this minimum conf
0766      * features like TPA will not be available.
0767      */
0768     vfs_supported = *num_vfs;
0769 
0770     avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
0771     avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
0772     avail_cp = min_t(int, avail_cp, avail_stat);
0773 
0774     while (vfs_supported) {
0775         min_rx_rings = vfs_supported;
0776         min_tx_rings = vfs_supported;
0777         min_rss_ctxs = vfs_supported;
0778 
0779         if (bp->flags & BNXT_FLAG_AGG_RINGS) {
0780             if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
0781                 min_rx_rings)
0782                 rx_ok = 1;
0783         } else {
0784             if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
0785                 min_rx_rings)
0786                 rx_ok = 1;
0787         }
0788         if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
0789             avail_cp < min_rx_rings)
0790             rx_ok = 0;
0791 
0792         if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
0793             avail_cp >= min_tx_rings)
0794             tx_ok = 1;
0795 
0796         if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
0797             min_rss_ctxs)
0798             rss_ok = 1;
0799 
0800         if (tx_ok && rx_ok && rss_ok)
0801             break;
0802 
0803         vfs_supported--;
0804     }
0805 
0806     if (!vfs_supported) {
0807         netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
0808         return -EINVAL;
0809     }
0810 
0811     if (vfs_supported != *num_vfs) {
0812         netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
0813                 *num_vfs, vfs_supported);
0814         *num_vfs = vfs_supported;
0815     }
0816 
0817     rc = bnxt_alloc_vf_resources(bp, *num_vfs);
0818     if (rc)
0819         goto err_out1;
0820 
0821     rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
0822     if (rc)
0823         goto err_out2;
0824 
0825     rc = pci_enable_sriov(bp->pdev, *num_vfs);
0826     if (rc) {
0827         bnxt_ulp_sriov_cfg(bp, 0);
0828         goto err_out2;
0829     }
0830 
0831     return 0;
0832 
0833 err_out2:
0834     /* Free the resources reserved for various VF's */
0835     bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
0836 
0837     /* Restore the max resources */
0838     bnxt_hwrm_func_qcaps(bp);
0839 
0840 err_out1:
0841     bnxt_free_vf_resources(bp);
0842 
0843     return rc;
0844 }
0845 
0846 void bnxt_sriov_disable(struct bnxt *bp)
0847 {
0848     u16 num_vfs = pci_num_vf(bp->pdev);
0849 
0850     if (!num_vfs)
0851         return;
0852 
0853     /* synchronize VF and VF-rep create and destroy */
0854     devl_lock(bp->dl);
0855     bnxt_vf_reps_destroy(bp);
0856 
0857     if (pci_vfs_assigned(bp->pdev)) {
0858         bnxt_hwrm_fwd_async_event_cmpl(
0859             bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
0860         netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
0861                 num_vfs);
0862     } else {
0863         pci_disable_sriov(bp->pdev);
0864         /* Free the HW resources reserved for various VF's */
0865         bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
0866     }
0867     devl_unlock(bp->dl);
0868 
0869     bnxt_free_vf_resources(bp);
0870 
0871     /* Reclaim all resources for the PF. */
0872     rtnl_lock();
0873     bnxt_restore_pf_fw_resources(bp);
0874     rtnl_unlock();
0875 
0876     bnxt_ulp_sriov_cfg(bp, 0);
0877 }
0878 
0879 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
0880 {
0881     struct net_device *dev = pci_get_drvdata(pdev);
0882     struct bnxt *bp = netdev_priv(dev);
0883 
0884     if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
0885         netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
0886         return 0;
0887     }
0888 
0889     rtnl_lock();
0890     if (!netif_running(dev)) {
0891         netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
0892         rtnl_unlock();
0893         return 0;
0894     }
0895     if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
0896         netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
0897         rtnl_unlock();
0898         return 0;
0899     }
0900     bp->sriov_cfg = true;
0901     rtnl_unlock();
0902 
0903     if (pci_vfs_assigned(bp->pdev)) {
0904         netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
0905         num_vfs = 0;
0906         goto sriov_cfg_exit;
0907     }
0908 
0909     /* Check if enabled VFs is same as requested */
0910     if (num_vfs && num_vfs == bp->pf.active_vfs)
0911         goto sriov_cfg_exit;
0912 
0913     /* if there are previous existing VFs, clean them up */
0914     bnxt_sriov_disable(bp);
0915     if (!num_vfs)
0916         goto sriov_cfg_exit;
0917 
0918     bnxt_sriov_enable(bp, &num_vfs);
0919 
0920 sriov_cfg_exit:
0921     bp->sriov_cfg = false;
0922     wake_up(&bp->sriov_cfg_wait);
0923 
0924     return num_vfs;
0925 }
0926 
0927 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
0928                   void *encap_resp, __le64 encap_resp_addr,
0929                   __le16 encap_resp_cpr, u32 msg_size)
0930 {
0931     struct hwrm_fwd_resp_input *req;
0932     int rc;
0933 
0934     if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
0935         return -EINVAL;
0936 
0937     rc = hwrm_req_init(bp, req, HWRM_FWD_RESP);
0938     if (!rc) {
0939         /* Set the new target id */
0940         req->target_id = cpu_to_le16(vf->fw_fid);
0941         req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
0942         req->encap_resp_len = cpu_to_le16(msg_size);
0943         req->encap_resp_addr = encap_resp_addr;
0944         req->encap_resp_cmpl_ring = encap_resp_cpr;
0945         memcpy(req->encap_resp, encap_resp, msg_size);
0946 
0947         rc = hwrm_req_send(bp, req);
0948     }
0949     if (rc)
0950         netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
0951     return rc;
0952 }
0953 
0954 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
0955                   u32 msg_size)
0956 {
0957     struct hwrm_reject_fwd_resp_input *req;
0958     int rc;
0959 
0960     if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
0961         return -EINVAL;
0962 
0963     rc = hwrm_req_init(bp, req, HWRM_REJECT_FWD_RESP);
0964     if (!rc) {
0965         /* Set the new target id */
0966         req->target_id = cpu_to_le16(vf->fw_fid);
0967         req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
0968         memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
0969 
0970         rc = hwrm_req_send(bp, req);
0971     }
0972     if (rc)
0973         netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
0974     return rc;
0975 }
0976 
0977 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
0978                    u32 msg_size)
0979 {
0980     struct hwrm_exec_fwd_resp_input *req;
0981     int rc;
0982 
0983     if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
0984         return -EINVAL;
0985 
0986     rc = hwrm_req_init(bp, req, HWRM_EXEC_FWD_RESP);
0987     if (!rc) {
0988         /* Set the new target id */
0989         req->target_id = cpu_to_le16(vf->fw_fid);
0990         req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
0991         memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
0992 
0993         rc = hwrm_req_send(bp, req);
0994     }
0995     if (rc)
0996         netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
0997     return rc;
0998 }
0999 
1000 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1001 {
1002     u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
1003     struct hwrm_func_vf_cfg_input *req =
1004         (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
1005 
1006     /* Allow VF to set a valid MAC address, if trust is set to on or
1007      * if the PF assigned MAC address is zero
1008      */
1009     if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
1010         bool trust = bnxt_is_trusted_vf(bp, vf);
1011 
1012         if (is_valid_ether_addr(req->dflt_mac_addr) &&
1013             (trust || !is_valid_ether_addr(vf->mac_addr) ||
1014              ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
1015             ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
1016             return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1017         }
1018         return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1019     }
1020     return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1021 }
1022 
1023 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1024 {
1025     u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
1026     struct hwrm_cfa_l2_filter_alloc_input *req =
1027         (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
1028     bool mac_ok = false;
1029 
1030     if (!is_valid_ether_addr((const u8 *)req->l2_addr))
1031         return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1032 
1033     /* Allow VF to set a valid MAC address, if trust is set to on.
1034      * Or VF MAC address must first match MAC address in PF's context.
1035      * Otherwise, it must match the VF MAC address if firmware spec >=
1036      * 1.2.2
1037      */
1038     if (bnxt_is_trusted_vf(bp, vf)) {
1039         mac_ok = true;
1040     } else if (is_valid_ether_addr(vf->mac_addr)) {
1041         if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1042             mac_ok = true;
1043     } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1044         if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1045             mac_ok = true;
1046     } else {
1047         /* There are two cases:
1048          * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1049          *   to the PF and so it doesn't have to match
1050          * 2.Allow VF to modify it's own MAC when PF has not assigned a
1051          *   valid MAC address and firmware spec >= 0x10202
1052          */
1053         mac_ok = true;
1054     }
1055     if (mac_ok)
1056         return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1057     return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1058 }
1059 
1060 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1061 {
1062     int rc = 0;
1063 
1064     if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1065         /* real link */
1066         rc = bnxt_hwrm_exec_fwd_resp(
1067             bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1068     } else {
1069         struct hwrm_port_phy_qcfg_output phy_qcfg_resp = {0};
1070         struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1071 
1072         phy_qcfg_req =
1073         (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1074         mutex_lock(&bp->link_lock);
1075         memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1076                sizeof(phy_qcfg_resp));
1077         mutex_unlock(&bp->link_lock);
1078         phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1079         phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1080         phy_qcfg_resp.valid = 1;
1081 
1082         if (vf->flags & BNXT_VF_LINK_UP) {
1083             /* if physical link is down, force link up on VF */
1084             if (phy_qcfg_resp.link !=
1085                 PORT_PHY_QCFG_RESP_LINK_LINK) {
1086                 phy_qcfg_resp.link =
1087                     PORT_PHY_QCFG_RESP_LINK_LINK;
1088                 phy_qcfg_resp.link_speed = cpu_to_le16(
1089                     PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1090                 phy_qcfg_resp.duplex_cfg =
1091                     PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1092                 phy_qcfg_resp.duplex_state =
1093                     PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1094                 phy_qcfg_resp.pause =
1095                     (PORT_PHY_QCFG_RESP_PAUSE_TX |
1096                      PORT_PHY_QCFG_RESP_PAUSE_RX);
1097             }
1098         } else {
1099             /* force link down */
1100             phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1101             phy_qcfg_resp.link_speed = 0;
1102             phy_qcfg_resp.duplex_state =
1103                 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1104             phy_qcfg_resp.pause = 0;
1105         }
1106         rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1107                     phy_qcfg_req->resp_addr,
1108                     phy_qcfg_req->cmpl_ring,
1109                     sizeof(phy_qcfg_resp));
1110     }
1111     return rc;
1112 }
1113 
1114 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1115 {
1116     int rc = 0;
1117     struct input *encap_req = vf->hwrm_cmd_req_addr;
1118     u32 req_type = le16_to_cpu(encap_req->req_type);
1119 
1120     switch (req_type) {
1121     case HWRM_FUNC_VF_CFG:
1122         rc = bnxt_vf_configure_mac(bp, vf);
1123         break;
1124     case HWRM_CFA_L2_FILTER_ALLOC:
1125         rc = bnxt_vf_validate_set_mac(bp, vf);
1126         break;
1127     case HWRM_FUNC_CFG:
1128         /* TODO Validate if VF is allowed to change mac address,
1129          * mtu, num of rings etc
1130          */
1131         rc = bnxt_hwrm_exec_fwd_resp(
1132             bp, vf, sizeof(struct hwrm_func_cfg_input));
1133         break;
1134     case HWRM_PORT_PHY_QCFG:
1135         rc = bnxt_vf_set_link(bp, vf);
1136         break;
1137     default:
1138         break;
1139     }
1140     return rc;
1141 }
1142 
1143 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1144 {
1145     u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1146 
1147     /* Scan through VF's and process commands */
1148     while (1) {
1149         vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1150         if (vf_id >= active_vfs)
1151             break;
1152 
1153         clear_bit(vf_id, bp->pf.vf_event_bmap);
1154         bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1155         i = vf_id + 1;
1156     }
1157 }
1158 
1159 int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1160 {
1161     struct hwrm_func_vf_cfg_input *req;
1162     int rc = 0;
1163 
1164     if (!BNXT_VF(bp))
1165         return 0;
1166 
1167     if (bp->hwrm_spec_code < 0x10202) {
1168         if (is_valid_ether_addr(bp->vf.mac_addr))
1169             rc = -EADDRNOTAVAIL;
1170         goto mac_done;
1171     }
1172 
1173     rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
1174     if (rc)
1175         goto mac_done;
1176 
1177     req->enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1178     memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
1179     if (!strict)
1180         hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
1181     rc = hwrm_req_send(bp, req);
1182 mac_done:
1183     if (rc && strict) {
1184         rc = -EADDRNOTAVAIL;
1185         netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1186                 mac);
1187         return rc;
1188     }
1189     return 0;
1190 }
1191 
1192 void bnxt_update_vf_mac(struct bnxt *bp)
1193 {
1194     struct hwrm_func_qcaps_output *resp;
1195     struct hwrm_func_qcaps_input *req;
1196     bool inform_pf = false;
1197 
1198     if (hwrm_req_init(bp, req, HWRM_FUNC_QCAPS))
1199         return;
1200 
1201     req->fid = cpu_to_le16(0xffff);
1202 
1203     resp = hwrm_req_hold(bp, req);
1204     if (hwrm_req_send(bp, req))
1205         goto update_vf_mac_exit;
1206 
1207     /* Store MAC address from the firmware.  There are 2 cases:
1208      * 1. MAC address is valid.  It is assigned from the PF and we
1209      *    need to override the current VF MAC address with it.
1210      * 2. MAC address is zero.  The VF will use a random MAC address by
1211      *    default but the stored zero MAC will allow the VF user to change
1212      *    the random MAC address using ndo_set_mac_address() if he wants.
1213      */
1214     if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr)) {
1215         memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1216         /* This means we are now using our own MAC address, let
1217          * the PF know about this MAC address.
1218          */
1219         if (!is_valid_ether_addr(bp->vf.mac_addr))
1220             inform_pf = true;
1221     }
1222 
1223     /* overwrite netdev dev_addr with admin VF MAC */
1224     if (is_valid_ether_addr(bp->vf.mac_addr))
1225         eth_hw_addr_set(bp->dev, bp->vf.mac_addr);
1226 update_vf_mac_exit:
1227     hwrm_req_drop(bp, req);
1228     if (inform_pf)
1229         bnxt_approve_mac(bp, bp->dev->dev_addr, false);
1230 }
1231 
1232 #else
1233 
1234 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1235 {
1236     if (*num_vfs)
1237         return -EOPNOTSUPP;
1238     return 0;
1239 }
1240 
1241 void bnxt_sriov_disable(struct bnxt *bp)
1242 {
1243 }
1244 
1245 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1246 {
1247     netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1248 }
1249 
1250 void bnxt_update_vf_mac(struct bnxt *bp)
1251 {
1252 }
1253 
1254 int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1255 {
1256     return 0;
1257 }
1258 #endif
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