drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c

   1 /* Broadcom NetXtreme-C/E network driver.
   2  *
   3  * Copyright (c) 2014-2016 Broadcom Corporation
   4  * Copyright (c) 2016-2018 Broadcom Limited
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/pci.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/if_vlan.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/etherdevice.h>
  17 #include "bnxt_hsi.h"
  18 #include "bnxt.h"
  19 #include "bnxt_ulp.h"
  20 #include "bnxt_sriov.h"
  21 #include "bnxt_vfr.h"
  22 #include "bnxt_ethtool.h"
  23
  24 #ifdef CONFIG_BNXT_SRIOV
  25 static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
  26                                           struct bnxt_vf_info *vf, u16 event_id)
  27 {
  28         struct hwrm_fwd_async_event_cmpl_output *resp = bp->hwrm_cmd_resp_addr;
  29         struct hwrm_fwd_async_event_cmpl_input req = {0};
  30         struct hwrm_async_event_cmpl *async_cmpl;
  31         int rc = 0;
  32
  33         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
  34         if (vf)
  35                 req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
  36         else
  37                 /* broadcast this async event to all VFs */
  38                 req.encap_async_event_target_id = cpu_to_le16(0xffff);
  39         async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
  40         async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
  41         async_cmpl->event_id = cpu_to_le16(event_id);
  42
  43         mutex_lock(&bp->hwrm_cmd_lock);
  44         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
  45
  46         if (rc) {
  47                 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
  48                            rc);
  49                 goto fwd_async_event_cmpl_exit;
  50         }
  51
  52         if (resp->error_code) {
  53                 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl error %d\n",
  54                            resp->error_code);
  55                 rc = -1;
  56         }
  57
  58 fwd_async_event_cmpl_exit:
  59         mutex_unlock(&bp->hwrm_cmd_lock);
  60         return rc;
  61 }
  62
  63 static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
  64 {
  65         if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
  66                 netdev_err(bp->dev, "vf ndo called though PF is down\n");
  67                 return -EINVAL;
  68         }
  69         if (!bp->pf.active_vfs) {
  70                 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
  71                 return -EINVAL;
  72         }
  73         if (vf_id >= bp->pf.active_vfs) {
  74                 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
  75                 return -EINVAL;
  76         }
  77         return 0;
  78 }
  79
  80 int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
  81 {
  82         struct hwrm_func_cfg_input req = {0};
  83         struct bnxt *bp = netdev_priv(dev);
  84         struct bnxt_vf_info *vf;
  85         bool old_setting = false;
  86         u32 func_flags;
  87         int rc;
  88
  89         if (bp->hwrm_spec_code < 0x10701)
  90                 return -ENOTSUPP;
  91
  92         rc = bnxt_vf_ndo_prep(bp, vf_id);
  93         if (rc)
  94                 return rc;
  95
  96         vf = &bp->pf.vf[vf_id];
  97         if (vf->flags & BNXT_VF_SPOOFCHK)
  98                 old_setting = true;
  99         if (old_setting == setting)
 100                 return 0;
 101
 102         func_flags = vf->func_flags;
 103         if (setting)
 104                 func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
 105         else
 106                 func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
 107         /*TODO: if the driver supports VLAN filter on guest VLAN,
 108          * the spoof check should also include vlan anti-spoofing
 109          */
 110         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 111         req.fid = cpu_to_le16(vf->fw_fid);
 112         req.flags = cpu_to_le32(func_flags);
 113         rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 114         if (!rc) {
 115                 vf->func_flags = func_flags;
 116                 if (setting)
 117                         vf->flags |= BNXT_VF_SPOOFCHK;
 118                 else
 119                         vf->flags &= ~BNXT_VF_SPOOFCHK;
 120         }
 121         return rc;
 122 }
 123
 124 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
 125 {
 126         struct bnxt *bp = netdev_priv(dev);
 127         struct bnxt_vf_info *vf;
 128
 129         if (bnxt_vf_ndo_prep(bp, vf_id))
 130                 return -EINVAL;
 131
 132         vf = &bp->pf.vf[vf_id];
 133         if (trusted)
 134                 vf->flags |= BNXT_VF_TRUST;
 135         else
 136                 vf->flags &= ~BNXT_VF_TRUST;
 137
 138         return 0;
 139 }
 140
 141 int bnxt_get_vf_config(struct net_device *dev, int vf_id,
 142                        struct ifla_vf_info *ivi)
 143 {
 144         struct bnxt *bp = netdev_priv(dev);
 145         struct bnxt_vf_info *vf;
 146         int rc;
 147
 148         rc = bnxt_vf_ndo_prep(bp, vf_id);
 149         if (rc)
 150                 return rc;
 151
 152         ivi->vf = vf_id;
 153         vf = &bp->pf.vf[vf_id];
 154
 155         if (is_valid_ether_addr(vf->mac_addr))
 156                 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
 157         else
 158                 memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
 159         ivi->max_tx_rate = vf->max_tx_rate;
 160         ivi->min_tx_rate = vf->min_tx_rate;
 161         ivi->vlan = vf->vlan;
 162         if (vf->flags & BNXT_VF_QOS)
 163                 ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
 164         else
 165                 ivi->qos = 0;
 166         ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
 167         ivi->trusted = !!(vf->flags & BNXT_VF_TRUST);
 168         if (!(vf->flags & BNXT_VF_LINK_FORCED))
 169                 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
 170         else if (vf->flags & BNXT_VF_LINK_UP)
 171                 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
 172         else
 173                 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
 174
 175         return 0;
 176 }
 177
 178 int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
 179 {
 180         struct hwrm_func_cfg_input req = {0};
 181         struct bnxt *bp = netdev_priv(dev);
 182         struct bnxt_vf_info *vf;
 183         int rc;
 184
 185         rc = bnxt_vf_ndo_prep(bp, vf_id);
 186         if (rc)
 187                 return rc;
 188         /* reject bc or mc mac addr, zero mac addr means allow
 189          * VF to use its own mac addr
 190          */
 191         if (is_multicast_ether_addr(mac)) {
 192                 netdev_err(dev, "Invalid VF ethernet address\n");
 193                 return -EINVAL;
 194         }
 195         vf = &bp->pf.vf[vf_id];
 196
 197         memcpy(vf->mac_addr, mac, ETH_ALEN);
 198         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 199         req.fid = cpu_to_le16(vf->fw_fid);
 200         req.flags = cpu_to_le32(vf->func_flags);
 201         req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
 202         memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
 203         return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 204 }
 205
 206 int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
 207                      __be16 vlan_proto)
 208 {
 209         struct hwrm_func_cfg_input req = {0};
 210         struct bnxt *bp = netdev_priv(dev);
 211         struct bnxt_vf_info *vf;
 212         u16 vlan_tag;
 213         int rc;
 214
 215         if (bp->hwrm_spec_code < 0x10201)
 216                 return -ENOTSUPP;
 217
 218         if (vlan_proto != htons(ETH_P_8021Q))
 219                 return -EPROTONOSUPPORT;
 220
 221         rc = bnxt_vf_ndo_prep(bp, vf_id);
 222         if (rc)
 223                 return rc;
 224
 225         /* TODO: needed to implement proper handling of user priority,
 226          * currently fail the command if there is valid priority
 227          */
 228         if (vlan_id > 4095 || qos)
 229                 return -EINVAL;
 230
 231         vf = &bp->pf.vf[vf_id];
 232         vlan_tag = vlan_id;
 233         if (vlan_tag == vf->vlan)
 234                 return 0;
 235
 236         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 237         req.fid = cpu_to_le16(vf->fw_fid);
 238         req.flags = cpu_to_le32(vf->func_flags);
 239         req.dflt_vlan = cpu_to_le16(vlan_tag);
 240         req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
 241         rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 242         if (!rc)
 243                 vf->vlan = vlan_tag;
 244         return rc;
 245 }
 246
 247 int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
 248                    int max_tx_rate)
 249 {
 250         struct hwrm_func_cfg_input req = {0};
 251         struct bnxt *bp = netdev_priv(dev);
 252         struct bnxt_vf_info *vf;
 253         u32 pf_link_speed;
 254         int rc;
 255
 256         rc = bnxt_vf_ndo_prep(bp, vf_id);
 257         if (rc)
 258                 return rc;
 259
 260         vf = &bp->pf.vf[vf_id];
 261         pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
 262         if (max_tx_rate > pf_link_speed) {
 263                 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
 264                             max_tx_rate, vf_id);
 265                 return -EINVAL;
 266         }
 267
 268         if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
 269                 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
 270                             min_tx_rate, vf_id);
 271                 return -EINVAL;
 272         }
 273         if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
 274                 return 0;
 275         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 276         req.fid = cpu_to_le16(vf->fw_fid);
 277         req.flags = cpu_to_le32(vf->func_flags);
 278         req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
 279         req.max_bw = cpu_to_le32(max_tx_rate);
 280         req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
 281         req.min_bw = cpu_to_le32(min_tx_rate);
 282         rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 283         if (!rc) {
 284                 vf->min_tx_rate = min_tx_rate;
 285                 vf->max_tx_rate = max_tx_rate;
 286         }
 287         return rc;
 288 }
 289
 290 int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
 291 {
 292         struct bnxt *bp = netdev_priv(dev);
 293         struct bnxt_vf_info *vf;
 294         int rc;
 295
 296         rc = bnxt_vf_ndo_prep(bp, vf_id);
 297         if (rc)
 298                 return rc;
 299
 300         vf = &bp->pf.vf[vf_id];
 301
 302         vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
 303         switch (link) {
 304         case IFLA_VF_LINK_STATE_AUTO:
 305                 vf->flags |= BNXT_VF_LINK_UP;
 306                 break;
 307         case IFLA_VF_LINK_STATE_DISABLE:
 308                 vf->flags |= BNXT_VF_LINK_FORCED;
 309                 break;
 310         case IFLA_VF_LINK_STATE_ENABLE:
 311                 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
 312                 break;
 313         default:
 314                 netdev_err(bp->dev, "Invalid link option\n");
 315                 rc = -EINVAL;
 316                 break;
 317         }
 318         if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
 319                 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
 320                         ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
 321         return rc;
 322 }
 323
 324 static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
 325 {
 326         int i;
 327         struct bnxt_vf_info *vf;
 328
 329         for (i = 0; i < num_vfs; i++) {
 330                 vf = &bp->pf.vf[i];
 331                 memset(vf, 0, sizeof(*vf));
 332         }
 333         return 0;
 334 }
 335
 336 static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
 337 {
 338         int i, rc = 0;
 339         struct bnxt_pf_info *pf = &bp->pf;
 340         struct hwrm_func_vf_resc_free_input req = {0};
 341
 342         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
 343
 344         mutex_lock(&bp->hwrm_cmd_lock);
 345         for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
 346                 req.vf_id = cpu_to_le16(i);
 347                 rc = _hwrm_send_message(bp, &req, sizeof(req),
 348                                         HWRM_CMD_TIMEOUT);
 349                 if (rc)
 350                         break;
 351         }
 352         mutex_unlock(&bp->hwrm_cmd_lock);
 353         return rc;
 354 }
 355
 356 static void bnxt_free_vf_resources(struct bnxt *bp)
 357 {
 358         struct pci_dev *pdev = bp->pdev;
 359         int i;
 360
 361         kfree(bp->pf.vf_event_bmap);
 362         bp->pf.vf_event_bmap = NULL;
 363
 364         for (i = 0; i < 4; i++) {
 365                 if (bp->pf.hwrm_cmd_req_addr[i]) {
 366                         dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
 367                                           bp->pf.hwrm_cmd_req_addr[i],
 368                                           bp->pf.hwrm_cmd_req_dma_addr[i]);
 369                         bp->pf.hwrm_cmd_req_addr[i] = NULL;
 370                 }
 371         }
 372
 373         kfree(bp->pf.vf);
 374         bp->pf.vf = NULL;
 375 }
 376
 377 static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
 378 {
 379         struct pci_dev *pdev = bp->pdev;
 380         u32 nr_pages, size, i, j, k = 0;
 381
 382         bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
 383         if (!bp->pf.vf)
 384                 return -ENOMEM;
 385
 386         bnxt_set_vf_attr(bp, num_vfs);
 387
 388         size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
 389         nr_pages = size / BNXT_PAGE_SIZE;
 390         if (size & (BNXT_PAGE_SIZE - 1))
 391                 nr_pages++;
 392
 393         for (i = 0; i < nr_pages; i++) {
 394                 bp->pf.hwrm_cmd_req_addr[i] =
 395                         dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
 396                                            &bp->pf.hwrm_cmd_req_dma_addr[i],
 397                                            GFP_KERNEL);
 398
 399                 if (!bp->pf.hwrm_cmd_req_addr[i])
 400                         return -ENOMEM;
 401
 402                 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
 403                         struct bnxt_vf_info *vf = &bp->pf.vf[k];
 404
 405                         vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
 406                                                 j * BNXT_HWRM_REQ_MAX_SIZE;
 407                         vf->hwrm_cmd_req_dma_addr =
 408                                 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
 409                                 BNXT_HWRM_REQ_MAX_SIZE;
 410                         k++;
 411                 }
 412         }
 413
 414         /* Max 128 VF's */
 415         bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
 416         if (!bp->pf.vf_event_bmap)
 417                 return -ENOMEM;
 418
 419         bp->pf.hwrm_cmd_req_pages = nr_pages;
 420         return 0;
 421 }
 422
 423 static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
 424 {
 425         struct hwrm_func_buf_rgtr_input req = {0};
 426
 427         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
 428
 429         req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
 430         req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
 431         req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
 432         req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
 433         req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
 434         req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
 435         req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
 436
 437         return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 438 }
 439
 440 /* Only called by PF to reserve resources for VFs, returns actual number of
 441  * VFs configured, or < 0 on error.
 442  */
 443 static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
 444 {
 445         struct hwrm_func_vf_resource_cfg_input req = {0};
 446         struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 447         u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
 448         u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
 449         struct bnxt_pf_info *pf = &bp->pf;
 450         int i, rc = 0, min = 1;
 451
 452         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
 453
 454         vf_cp_rings = bnxt_get_max_func_cp_rings_for_en(bp) - bp->cp_nr_rings;
 455         vf_stat_ctx = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
 456         if (bp->flags & BNXT_FLAG_AGG_RINGS)
 457                 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
 458         else
 459                 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
 460         vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
 461         vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
 462         vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
 463         vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 464
 465         req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
 466         req.max_rsscos_ctx = cpu_to_le16(BNXT_VF_MAX_RSS_CTX);
 467         if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
 468                 min = 0;
 469                 req.min_rsscos_ctx = cpu_to_le16(min);
 470         }
 471         if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
 472             pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
 473                 req.min_cmpl_rings = cpu_to_le16(min);
 474                 req.min_tx_rings = cpu_to_le16(min);
 475                 req.min_rx_rings = cpu_to_le16(min);
 476                 req.min_l2_ctxs = cpu_to_le16(min);
 477                 req.min_vnics = cpu_to_le16(min);
 478                 req.min_stat_ctx = cpu_to_le16(min);
 479                 req.min_hw_ring_grps = cpu_to_le16(min);
 480         } else {
 481                 vf_cp_rings /= num_vfs;
 482                 vf_tx_rings /= num_vfs;
 483                 vf_rx_rings /= num_vfs;
 484                 vf_vnics /= num_vfs;
 485                 vf_stat_ctx /= num_vfs;
 486                 vf_ring_grps /= num_vfs;
 487
 488                 req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
 489                 req.min_tx_rings = cpu_to_le16(vf_tx_rings);
 490                 req.min_rx_rings = cpu_to_le16(vf_rx_rings);
 491                 req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
 492                 req.min_vnics = cpu_to_le16(vf_vnics);
 493                 req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
 494                 req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 495         }
 496         req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
 497         req.max_tx_rings = cpu_to_le16(vf_tx_rings);
 498         req.max_rx_rings = cpu_to_le16(vf_rx_rings);
 499         req.max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
 500         req.max_vnics = cpu_to_le16(vf_vnics);
 501         req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
 502         req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 503
 504         mutex_lock(&bp->hwrm_cmd_lock);
 505         for (i = 0; i < num_vfs; i++) {
 506                 req.vf_id = cpu_to_le16(pf->first_vf_id + i);
 507                 rc = _hwrm_send_message(bp, &req, sizeof(req),
 508                                         HWRM_CMD_TIMEOUT);
 509                 if (rc) {
 510                         rc = -ENOMEM;
 511                         break;
 512                 }
 513                 pf->active_vfs = i + 1;
 514                 pf->vf[i].fw_fid = pf->first_vf_id + i;
 515         }
 516         mutex_unlock(&bp->hwrm_cmd_lock);
 517         if (pf->active_vfs) {
 518                 u16 n = pf->active_vfs;
 519
 520                 hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
 521                 hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
 522                 hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
 523                                              n;
 524                 hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
 525                 hw_resc->max_rsscos_ctxs -= pf->active_vfs;
 526                 hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
 527                 hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
 528
 529                 rc = pf->active_vfs;
 530         }
 531         return rc;
 532 }
 533
 534 /* Only called by PF to reserve resources for VFs, returns actual number of
 535  * VFs configured, or < 0 on error.
 536  */
 537 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 538 {
 539         u32 rc = 0, mtu, i;
 540         u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
 541         struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 542         u16 vf_ring_grps, max_stat_ctxs;
 543         struct hwrm_func_cfg_input req = {0};
 544         struct bnxt_pf_info *pf = &bp->pf;
 545         int total_vf_tx_rings = 0;
 546
 547         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 548
 549         max_stat_ctxs = hw_resc->max_stat_ctxs;
 550
 551         /* Remaining rings are distributed equally amongs VF's for now */
 552         vf_cp_rings = (bnxt_get_max_func_cp_rings_for_en(bp) -
 553                        bp->cp_nr_rings) / num_vfs;
 554         vf_stat_ctx = (max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
 555         if (bp->flags & BNXT_FLAG_AGG_RINGS)
 556                 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
 557                               num_vfs;
 558         else
 559                 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
 560                               num_vfs;
 561         vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
 562         vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
 563         vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
 564         vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 565
 566         req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
 567                                   FUNC_CFG_REQ_ENABLES_MRU |
 568                                   FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
 569                                   FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
 570                                   FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
 571                                   FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
 572                                   FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
 573                                   FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
 574                                   FUNC_CFG_REQ_ENABLES_NUM_VNICS |
 575                                   FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
 576
 577         mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 578         req.mru = cpu_to_le16(mtu);
 579         req.mtu = cpu_to_le16(mtu);
 580
 581         req.num_rsscos_ctxs = cpu_to_le16(1);
 582         req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
 583         req.num_tx_rings = cpu_to_le16(vf_tx_rings);
 584         req.num_rx_rings = cpu_to_le16(vf_rx_rings);
 585         req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 586         req.num_l2_ctxs = cpu_to_le16(4);
 587
 588         req.num_vnics = cpu_to_le16(vf_vnics);
 589         /* FIXME spec currently uses 1 bit for stats ctx */
 590         req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
 591
 592         mutex_lock(&bp->hwrm_cmd_lock);
 593         for (i = 0; i < num_vfs; i++) {
 594                 int vf_tx_rsvd = vf_tx_rings;
 595
 596                 req.fid = cpu_to_le16(pf->first_vf_id + i);
 597                 rc = _hwrm_send_message(bp, &req, sizeof(req),
 598                                         HWRM_CMD_TIMEOUT);
 599                 if (rc)
 600                         break;
 601                 pf->active_vfs = i + 1;
 602                 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
 603                 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
 604                                               &vf_tx_rsvd);
 605                 if (rc)
 606                         break;
 607                 total_vf_tx_rings += vf_tx_rsvd;
 608         }
 609         mutex_unlock(&bp->hwrm_cmd_lock);
 610         if (rc)
 611                 rc = -ENOMEM;
 612         if (pf->active_vfs) {
 613                 hw_resc->max_tx_rings -= total_vf_tx_rings;
 614                 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
 615                 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
 616                 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
 617                 hw_resc->max_rsscos_ctxs -= num_vfs;
 618                 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
 619                 hw_resc->max_vnics -= vf_vnics * num_vfs;
 620                 rc = pf->active_vfs;
 621         }
 622         return rc;
 623 }
 624
 625 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs)
 626 {
 627         if (BNXT_NEW_RM(bp))
 628                 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs);
 629         else
 630                 return bnxt_hwrm_func_cfg(bp, num_vfs);
 631 }
 632
 633 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
 634 {
 635         int rc = 0, vfs_supported;
 636         int min_rx_rings, min_tx_rings, min_rss_ctxs;
 637         struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 638         int tx_ok = 0, rx_ok = 0, rss_ok = 0;
 639         int avail_cp, avail_stat;
 640
 641         /* Check if we can enable requested num of vf's. At a mininum
 642          * we require 1 RX 1 TX rings for each VF. In this minimum conf
 643          * features like TPA will not be available.
 644          */
 645         vfs_supported = *num_vfs;
 646
 647         avail_cp = bnxt_get_max_func_cp_rings_for_en(bp) - bp->cp_nr_rings;
 648         avail_stat = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
 649         avail_cp = min_t(int, avail_cp, avail_stat);
 650
 651         while (vfs_supported) {
 652                 min_rx_rings = vfs_supported;
 653                 min_tx_rings = vfs_supported;
 654                 min_rss_ctxs = vfs_supported;
 655
 656                 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
 657                         if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
 658                             min_rx_rings)
 659                                 rx_ok = 1;
 660                 } else {
 661                         if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
 662                             min_rx_rings)
 663                                 rx_ok = 1;
 664                 }
 665                 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
 666                     avail_cp < min_rx_rings)
 667                         rx_ok = 0;
 668
 669                 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
 670                     avail_cp >= min_tx_rings)
 671                         tx_ok = 1;
 672
 673                 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
 674                     min_rss_ctxs)
 675                         rss_ok = 1;
 676
 677                 if (tx_ok && rx_ok && rss_ok)
 678                         break;
 679
 680                 vfs_supported--;
 681         }
 682
 683         if (!vfs_supported) {
 684                 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
 685                 return -EINVAL;
 686         }
 687
 688         if (vfs_supported != *num_vfs) {
 689                 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
 690                             *num_vfs, vfs_supported);
 691                 *num_vfs = vfs_supported;
 692         }
 693
 694         rc = bnxt_alloc_vf_resources(bp, *num_vfs);
 695         if (rc)
 696                 goto err_out1;
 697
 698         /* Reserve resources for VFs */
 699         rc = bnxt_func_cfg(bp, *num_vfs);
 700         if (rc != *num_vfs) {
 701                 if (rc <= 0) {
 702                         netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
 703                         *num_vfs = 0;
 704                         goto err_out2;
 705                 }
 706                 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n", rc);
 707                 *num_vfs = rc;
 708         }
 709
 710         /* Register buffers for VFs */
 711         rc = bnxt_hwrm_func_buf_rgtr(bp);
 712         if (rc)
 713                 goto err_out2;
 714
 715         bnxt_ulp_sriov_cfg(bp, *num_vfs);
 716
 717         rc = pci_enable_sriov(bp->pdev, *num_vfs);
 718         if (rc)
 719                 goto err_out2;
 720
 721         return 0;
 722
 723 err_out2:
 724         /* Free the resources reserved for various VF's */
 725         bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
 726
 727 err_out1:
 728         bnxt_free_vf_resources(bp);
 729
 730         return rc;
 731 }
 732
 733 void bnxt_sriov_disable(struct bnxt *bp)
 734 {
 735         u16 num_vfs = pci_num_vf(bp->pdev);
 736
 737         if (!num_vfs)
 738                 return;
 739
 740         /* synchronize VF and VF-rep create and destroy */
 741         mutex_lock(&bp->sriov_lock);
 742         bnxt_vf_reps_destroy(bp);
 743
 744         if (pci_vfs_assigned(bp->pdev)) {
 745                 bnxt_hwrm_fwd_async_event_cmpl(
 746                         bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
 747                 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
 748                             num_vfs);
 749         } else {
 750                 pci_disable_sriov(bp->pdev);
 751                 /* Free the HW resources reserved for various VF's */
 752                 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
 753         }
 754         mutex_unlock(&bp->sriov_lock);
 755
 756         bnxt_free_vf_resources(bp);
 757
 758         bp->pf.active_vfs = 0;
 759         /* Reclaim all resources for the PF. */
 760         rtnl_lock();
 761         bnxt_restore_pf_fw_resources(bp);
 762         rtnl_unlock();
 763
 764         bnxt_ulp_sriov_cfg(bp, 0);
 765 }
 766
 767 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
 768 {
 769         struct net_device *dev = pci_get_drvdata(pdev);
 770         struct bnxt *bp = netdev_priv(dev);
 771
 772         if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
 773                 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
 774                 return 0;
 775         }
 776
 777         rtnl_lock();
 778         if (!netif_running(dev)) {
 779                 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
 780                 rtnl_unlock();
 781                 return 0;
 782         }
 783         bp->sriov_cfg = true;
 784         rtnl_unlock();
 785
 786         if (pci_vfs_assigned(bp->pdev)) {
 787                 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
 788                 num_vfs = 0;
 789                 goto sriov_cfg_exit;
 790         }
 791
 792         /* Check if enabled VFs is same as requested */
 793         if (num_vfs && num_vfs == bp->pf.active_vfs)
 794                 goto sriov_cfg_exit;
 795
 796         /* if there are previous existing VFs, clean them up */
 797         bnxt_sriov_disable(bp);
 798         if (!num_vfs)
 799                 goto sriov_cfg_exit;
 800
 801         bnxt_sriov_enable(bp, &num_vfs);
 802
 803 sriov_cfg_exit:
 804         bp->sriov_cfg = false;
 805         wake_up(&bp->sriov_cfg_wait);
 806
 807         return num_vfs;
 808 }
 809
 810 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 811                               void *encap_resp, __le64 encap_resp_addr,
 812                               __le16 encap_resp_cpr, u32 msg_size)
 813 {
 814         int rc = 0;
 815         struct hwrm_fwd_resp_input req = {0};
 816         struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 817
 818         if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
 819                 return -EINVAL;
 820
 821         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
 822
 823         /* Set the new target id */
 824         req.target_id = cpu_to_le16(vf->fw_fid);
 825         req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 826         req.encap_resp_len = cpu_to_le16(msg_size);
 827         req.encap_resp_addr = encap_resp_addr;
 828         req.encap_resp_cmpl_ring = encap_resp_cpr;
 829         memcpy(req.encap_resp, encap_resp, msg_size);
 830
 831         mutex_lock(&bp->hwrm_cmd_lock);
 832         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 833
 834         if (rc) {
 835                 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
 836                 goto fwd_resp_exit;
 837         }
 838
 839         if (resp->error_code) {
 840                 netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
 841                            resp->error_code);
 842                 rc = -1;
 843         }
 844
 845 fwd_resp_exit:
 846         mutex_unlock(&bp->hwrm_cmd_lock);
 847         return rc;
 848 }
 849
 850 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 851                                   u32 msg_size)
 852 {
 853         int rc = 0;
 854         struct hwrm_reject_fwd_resp_input req = {0};
 855         struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 856
 857         if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
 858                 return -EINVAL;
 859
 860         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
 861         /* Set the new target id */
 862         req.target_id = cpu_to_le16(vf->fw_fid);
 863         req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 864         memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
 865
 866         mutex_lock(&bp->hwrm_cmd_lock);
 867         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 868
 869         if (rc) {
 870                 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
 871                 goto fwd_err_resp_exit;
 872         }
 873
 874         if (resp->error_code) {
 875                 netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
 876                            resp->error_code);
 877                 rc = -1;
 878         }
 879
 880 fwd_err_resp_exit:
 881         mutex_unlock(&bp->hwrm_cmd_lock);
 882         return rc;
 883 }
 884
 885 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 886                                    u32 msg_size)
 887 {
 888         int rc = 0;
 889         struct hwrm_exec_fwd_resp_input req = {0};
 890         struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 891
 892         if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
 893                 return -EINVAL;
 894
 895         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
 896         /* Set the new target id */
 897         req.target_id = cpu_to_le16(vf->fw_fid);
 898         req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 899         memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
 900
 901         mutex_lock(&bp->hwrm_cmd_lock);
 902         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 903
 904         if (rc) {
 905                 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
 906                 goto exec_fwd_resp_exit;
 907         }
 908
 909         if (resp->error_code) {
 910                 netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
 911                            resp->error_code);
 912                 rc = -1;
 913         }
 914
 915 exec_fwd_resp_exit:
 916         mutex_unlock(&bp->hwrm_cmd_lock);
 917         return rc;
 918 }
 919
 920 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
 921 {
 922         u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
 923         struct hwrm_func_vf_cfg_input *req =
 924                 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
 925
 926         /* Allow VF to set a valid MAC address, if trust is set to on or
 927          * if the PF assigned MAC address is zero
 928          */
 929         if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
 930                 if (is_valid_ether_addr(req->dflt_mac_addr) &&
 931                     ((vf->flags & BNXT_VF_TRUST) ||
 932                      !is_valid_ether_addr(vf->mac_addr) ||
 933                      ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
 934                         ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
 935                         return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 936                 }
 937                 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 938         }
 939         return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 940 }
 941
 942 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
 943 {
 944         u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
 945         struct hwrm_cfa_l2_filter_alloc_input *req =
 946                 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
 947         bool mac_ok = false;
 948
 949         if (!is_valid_ether_addr((const u8 *)req->l2_addr))
 950                 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 951
 952         /* Allow VF to set a valid MAC address, if trust is set to on.
 953          * Or VF MAC address must first match MAC address in PF's context.
 954          * Otherwise, it must match the VF MAC address if firmware spec >=
 955          * 1.2.2
 956          */
 957         if (vf->flags & BNXT_VF_TRUST) {
 958                 mac_ok = true;
 959         } else if (is_valid_ether_addr(vf->mac_addr)) {
 960                 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
 961                         mac_ok = true;
 962         } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
 963                 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
 964                         mac_ok = true;
 965         } else {
 966                 /* There are two cases:
 967                  * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
 968                  *   to the PF and so it doesn't have to match
 969                  * 2.Allow VF to modify it's own MAC when PF has not assigned a
 970                  *   valid MAC address and firmware spec >= 0x10202
 971                  */
 972                 mac_ok = true;
 973         }
 974         if (mac_ok)
 975                 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 976         return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 977 }
 978
 979 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
 980 {
 981         int rc = 0;
 982
 983         if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
 984                 /* real link */
 985                 rc = bnxt_hwrm_exec_fwd_resp(
 986                         bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
 987         } else {
 988                 struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
 989                 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
 990
 991                 phy_qcfg_req =
 992                 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
 993                 mutex_lock(&bp->hwrm_cmd_lock);
 994                 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
 995                        sizeof(phy_qcfg_resp));
 996                 mutex_unlock(&bp->hwrm_cmd_lock);
 997                 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
 998                 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
 999                 phy_qcfg_resp.valid = 1;
1000
1001                 if (vf->flags & BNXT_VF_LINK_UP) {
1002                         /* if physical link is down, force link up on VF */
1003                         if (phy_qcfg_resp.link !=
1004                             PORT_PHY_QCFG_RESP_LINK_LINK) {
1005                                 phy_qcfg_resp.link =
1006                                         PORT_PHY_QCFG_RESP_LINK_LINK;
1007                                 phy_qcfg_resp.link_speed = cpu_to_le16(
1008                                         PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1009                                 phy_qcfg_resp.duplex_cfg =
1010                                         PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1011                                 phy_qcfg_resp.duplex_state =
1012                                         PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1013                                 phy_qcfg_resp.pause =
1014                                         (PORT_PHY_QCFG_RESP_PAUSE_TX |
1015                                          PORT_PHY_QCFG_RESP_PAUSE_RX);
1016                         }
1017                 } else {
1018                         /* force link down */
1019                         phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1020                         phy_qcfg_resp.link_speed = 0;
1021                         phy_qcfg_resp.duplex_state =
1022                                 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1023                         phy_qcfg_resp.pause = 0;
1024                 }
1025                 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1026                                         phy_qcfg_req->resp_addr,
1027                                         phy_qcfg_req->cmpl_ring,
1028                                         sizeof(phy_qcfg_resp));
1029         }
1030         return rc;
1031 }
1032
1033 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1034 {
1035         int rc = 0;
1036         struct input *encap_req = vf->hwrm_cmd_req_addr;
1037         u32 req_type = le16_to_cpu(encap_req->req_type);
1038
1039         switch (req_type) {
1040         case HWRM_FUNC_VF_CFG:
1041                 rc = bnxt_vf_configure_mac(bp, vf);
1042                 break;
1043         case HWRM_CFA_L2_FILTER_ALLOC:
1044                 rc = bnxt_vf_validate_set_mac(bp, vf);
1045                 break;
1046         case HWRM_FUNC_CFG:
1047                 /* TODO Validate if VF is allowed to change mac address,
1048                  * mtu, num of rings etc
1049                  */
1050                 rc = bnxt_hwrm_exec_fwd_resp(
1051                         bp, vf, sizeof(struct hwrm_func_cfg_input));
1052                 break;
1053         case HWRM_PORT_PHY_QCFG:
1054                 rc = bnxt_vf_set_link(bp, vf);
1055                 break;
1056         default:
1057                 break;
1058         }
1059         return rc;
1060 }
1061
1062 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1063 {
1064         u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1065
1066         /* Scan through VF's and process commands */
1067         while (1) {
1068                 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1069                 if (vf_id >= active_vfs)
1070                         break;
1071
1072                 clear_bit(vf_id, bp->pf.vf_event_bmap);
1073                 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1074                 i = vf_id + 1;
1075         }
1076 }
1077
1078 void bnxt_update_vf_mac(struct bnxt *bp)
1079 {
1080         struct hwrm_func_qcaps_input req = {0};
1081         struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
1082
1083         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
1084         req.fid = cpu_to_le16(0xffff);
1085
1086         mutex_lock(&bp->hwrm_cmd_lock);
1087         if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
1088                 goto update_vf_mac_exit;
1089
1090         /* Store MAC address from the firmware.  There are 2 cases:
1091          * 1. MAC address is valid.  It is assigned from the PF and we
1092          *    need to override the current VF MAC address with it.
1093          * 2. MAC address is zero.  The VF will use a random MAC address by
1094          *    default but the stored zero MAC will allow the VF user to change
1095          *    the random MAC address using ndo_set_mac_address() if he wants.
1096          */
1097         if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
1098                 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1099
1100         /* overwrite netdev dev_addr with admin VF MAC */
1101         if (is_valid_ether_addr(bp->vf.mac_addr))
1102                 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
1103 update_vf_mac_exit:
1104         mutex_unlock(&bp->hwrm_cmd_lock);
1105 }
1106
1107 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1108 {
1109         struct hwrm_func_vf_cfg_input req = {0};
1110         int rc = 0;
1111
1112         if (!BNXT_VF(bp))
1113                 return 0;
1114
1115         if (bp->hwrm_spec_code < 0x10202) {
1116                 if (is_valid_ether_addr(bp->vf.mac_addr))
1117                         rc = -EADDRNOTAVAIL;
1118                 goto mac_done;
1119         }
1120         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
1121         req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1122         memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
1123         rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
1124 mac_done:
1125         if (rc && strict) {
1126                 rc = -EADDRNOTAVAIL;
1127                 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1128                             mac);
1129                 return rc;
1130         }
1131         return 0;
1132 }
1133 #else
1134
1135 void bnxt_sriov_disable(struct bnxt *bp)
1136 {
1137 }
1138
1139 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1140 {
1141         netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1142 }
1143
1144 void bnxt_update_vf_mac(struct bnxt *bp)
1145 {
1146 }
1147
1148 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1149 {
1150         return 0;
1151 }
1152 #endif