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;
 451
 452         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
 453
 454         vf_cp_rings = hw_resc->max_cp_rings - 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(1);
 466         req.max_rsscos_ctx = cpu_to_le16(1);
 467         if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL) {
 468                 req.min_cmpl_rings = cpu_to_le16(1);
 469                 req.min_tx_rings = cpu_to_le16(1);
 470                 req.min_rx_rings = cpu_to_le16(1);
 471                 req.min_l2_ctxs = cpu_to_le16(1);
 472                 req.min_vnics = cpu_to_le16(1);
 473                 req.min_stat_ctx = cpu_to_le16(1);
 474                 req.min_hw_ring_grps = cpu_to_le16(1);
 475         } else {
 476                 vf_cp_rings /= num_vfs;
 477                 vf_tx_rings /= num_vfs;
 478                 vf_rx_rings /= num_vfs;
 479                 vf_vnics /= num_vfs;
 480                 vf_stat_ctx /= num_vfs;
 481                 vf_ring_grps /= num_vfs;
 482
 483                 req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
 484                 req.min_tx_rings = cpu_to_le16(vf_tx_rings);
 485                 req.min_rx_rings = cpu_to_le16(vf_rx_rings);
 486                 req.min_l2_ctxs = cpu_to_le16(4);
 487                 req.min_vnics = cpu_to_le16(vf_vnics);
 488                 req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
 489                 req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 490         }
 491         req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
 492         req.max_tx_rings = cpu_to_le16(vf_tx_rings);
 493         req.max_rx_rings = cpu_to_le16(vf_rx_rings);
 494         req.max_l2_ctxs = cpu_to_le16(4);
 495         req.max_vnics = cpu_to_le16(vf_vnics);
 496         req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
 497         req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 498
 499         mutex_lock(&bp->hwrm_cmd_lock);
 500         for (i = 0; i < num_vfs; i++) {
 501                 req.vf_id = cpu_to_le16(pf->first_vf_id + i);
 502                 rc = _hwrm_send_message(bp, &req, sizeof(req),
 503                                         HWRM_CMD_TIMEOUT);
 504                 if (rc) {
 505                         rc = -ENOMEM;
 506                         break;
 507                 }
 508                 pf->active_vfs = i + 1;
 509                 pf->vf[i].fw_fid = pf->first_vf_id + i;
 510         }
 511         mutex_unlock(&bp->hwrm_cmd_lock);
 512         if (pf->active_vfs) {
 513                 u16 n = pf->active_vfs;
 514
 515                 hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
 516                 hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
 517                 hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
 518                                              n;
 519                 hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
 520                 hw_resc->max_rsscos_ctxs -= pf->active_vfs;
 521                 hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
 522                 hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
 523
 524                 rc = pf->active_vfs;
 525         }
 526         return rc;
 527 }
 528
 529 /* Only called by PF to reserve resources for VFs, returns actual number of
 530  * VFs configured, or < 0 on error.
 531  */
 532 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 533 {
 534         u32 rc = 0, mtu, i;
 535         u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
 536         struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 537         u16 vf_ring_grps, max_stat_ctxs;
 538         struct hwrm_func_cfg_input req = {0};
 539         struct bnxt_pf_info *pf = &bp->pf;
 540         int total_vf_tx_rings = 0;
 541
 542         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 543
 544         max_stat_ctxs = hw_resc->max_stat_ctxs;
 545
 546         /* Remaining rings are distributed equally amongs VF's for now */
 547         vf_cp_rings = (hw_resc->max_cp_rings - bp->cp_nr_rings) / num_vfs;
 548         vf_stat_ctx = (max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
 549         if (bp->flags & BNXT_FLAG_AGG_RINGS)
 550                 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
 551                               num_vfs;
 552         else
 553                 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
 554                               num_vfs;
 555         vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
 556         vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
 557         vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
 558         vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 559
 560         req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
 561                                   FUNC_CFG_REQ_ENABLES_MRU |
 562                                   FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
 563                                   FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
 564                                   FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
 565                                   FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
 566                                   FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
 567                                   FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
 568                                   FUNC_CFG_REQ_ENABLES_NUM_VNICS |
 569                                   FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
 570
 571         mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 572         req.mru = cpu_to_le16(mtu);
 573         req.mtu = cpu_to_le16(mtu);
 574
 575         req.num_rsscos_ctxs = cpu_to_le16(1);
 576         req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
 577         req.num_tx_rings = cpu_to_le16(vf_tx_rings);
 578         req.num_rx_rings = cpu_to_le16(vf_rx_rings);
 579         req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 580         req.num_l2_ctxs = cpu_to_le16(4);
 581
 582         req.num_vnics = cpu_to_le16(vf_vnics);
 583         /* FIXME spec currently uses 1 bit for stats ctx */
 584         req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
 585
 586         mutex_lock(&bp->hwrm_cmd_lock);
 587         for (i = 0; i < num_vfs; i++) {
 588                 int vf_tx_rsvd = vf_tx_rings;
 589
 590                 req.fid = cpu_to_le16(pf->first_vf_id + i);
 591                 rc = _hwrm_send_message(bp, &req, sizeof(req),
 592                                         HWRM_CMD_TIMEOUT);
 593                 if (rc)
 594                         break;
 595                 pf->active_vfs = i + 1;
 596                 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
 597                 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
 598                                               &vf_tx_rsvd);
 599                 if (rc)
 600                         break;
 601                 total_vf_tx_rings += vf_tx_rsvd;
 602         }
 603         mutex_unlock(&bp->hwrm_cmd_lock);
 604         if (rc)
 605                 rc = -ENOMEM;
 606         if (pf->active_vfs) {
 607                 hw_resc->max_tx_rings -= total_vf_tx_rings;
 608                 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
 609                 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
 610                 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
 611                 hw_resc->max_rsscos_ctxs -= num_vfs;
 612                 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
 613                 hw_resc->max_vnics -= vf_vnics * num_vfs;
 614                 rc = pf->active_vfs;
 615         }
 616         return rc;
 617 }
 618
 619 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs)
 620 {
 621         if (bp->flags & BNXT_FLAG_NEW_RM)
 622                 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs);
 623         else
 624                 return bnxt_hwrm_func_cfg(bp, num_vfs);
 625 }
 626
 627 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
 628 {
 629         int rc = 0, vfs_supported;
 630         int min_rx_rings, min_tx_rings, min_rss_ctxs;
 631         struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 632         int tx_ok = 0, rx_ok = 0, rss_ok = 0;
 633         int avail_cp, avail_stat;
 634
 635         /* Check if we can enable requested num of vf's. At a mininum
 636          * we require 1 RX 1 TX rings for each VF. In this minimum conf
 637          * features like TPA will not be available.
 638          */
 639         vfs_supported = *num_vfs;
 640
 641         avail_cp = hw_resc->max_cp_rings - bp->cp_nr_rings;
 642         avail_stat = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
 643         avail_cp = min_t(int, avail_cp, avail_stat);
 644
 645         while (vfs_supported) {
 646                 min_rx_rings = vfs_supported;
 647                 min_tx_rings = vfs_supported;
 648                 min_rss_ctxs = vfs_supported;
 649
 650                 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
 651                         if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
 652                             min_rx_rings)
 653                                 rx_ok = 1;
 654                 } else {
 655                         if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
 656                             min_rx_rings)
 657                                 rx_ok = 1;
 658                 }
 659                 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
 660                     avail_cp < min_rx_rings)
 661                         rx_ok = 0;
 662
 663                 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
 664                     avail_cp >= min_tx_rings)
 665                         tx_ok = 1;
 666
 667                 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
 668                     min_rss_ctxs)
 669                         rss_ok = 1;
 670
 671                 if (tx_ok && rx_ok && rss_ok)
 672                         break;
 673
 674                 vfs_supported--;
 675         }
 676
 677         if (!vfs_supported) {
 678                 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
 679                 return -EINVAL;
 680         }
 681
 682         if (vfs_supported != *num_vfs) {
 683                 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
 684                             *num_vfs, vfs_supported);
 685                 *num_vfs = vfs_supported;
 686         }
 687
 688         rc = bnxt_alloc_vf_resources(bp, *num_vfs);
 689         if (rc)
 690                 goto err_out1;
 691
 692         /* Reserve resources for VFs */
 693         rc = bnxt_func_cfg(bp, *num_vfs);
 694         if (rc != *num_vfs) {
 695                 if (rc <= 0) {
 696                         netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
 697                         *num_vfs = 0;
 698                         goto err_out2;
 699                 }
 700                 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n", rc);
 701                 *num_vfs = rc;
 702         }
 703
 704         /* Register buffers for VFs */
 705         rc = bnxt_hwrm_func_buf_rgtr(bp);
 706         if (rc)
 707                 goto err_out2;
 708
 709         bnxt_ulp_sriov_cfg(bp, *num_vfs);
 710
 711         rc = pci_enable_sriov(bp->pdev, *num_vfs);
 712         if (rc)
 713                 goto err_out2;
 714
 715         return 0;
 716
 717 err_out2:
 718         /* Free the resources reserved for various VF's */
 719         bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
 720
 721 err_out1:
 722         bnxt_free_vf_resources(bp);
 723
 724         return rc;
 725 }
 726
 727 void bnxt_sriov_disable(struct bnxt *bp)
 728 {
 729         u16 num_vfs = pci_num_vf(bp->pdev);
 730
 731         if (!num_vfs)
 732                 return;
 733
 734         /* synchronize VF and VF-rep create and destroy */
 735         mutex_lock(&bp->sriov_lock);
 736         bnxt_vf_reps_destroy(bp);
 737
 738         if (pci_vfs_assigned(bp->pdev)) {
 739                 bnxt_hwrm_fwd_async_event_cmpl(
 740                         bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
 741                 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
 742                             num_vfs);
 743         } else {
 744                 pci_disable_sriov(bp->pdev);
 745                 /* Free the HW resources reserved for various VF's */
 746                 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
 747         }
 748         mutex_unlock(&bp->sriov_lock);
 749
 750         bnxt_free_vf_resources(bp);
 751
 752         bp->pf.active_vfs = 0;
 753         /* Reclaim all resources for the PF. */
 754         rtnl_lock();
 755         bnxt_restore_pf_fw_resources(bp);
 756         rtnl_unlock();
 757
 758         bnxt_ulp_sriov_cfg(bp, 0);
 759 }
 760
 761 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
 762 {
 763         struct net_device *dev = pci_get_drvdata(pdev);
 764         struct bnxt *bp = netdev_priv(dev);
 765
 766         if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
 767                 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
 768                 return 0;
 769         }
 770
 771         rtnl_lock();
 772         if (!netif_running(dev)) {
 773                 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
 774                 rtnl_unlock();
 775                 return 0;
 776         }
 777         bp->sriov_cfg = true;
 778         rtnl_unlock();
 779
 780         if (pci_vfs_assigned(bp->pdev)) {
 781                 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
 782                 num_vfs = 0;
 783                 goto sriov_cfg_exit;
 784         }
 785
 786         /* Check if enabled VFs is same as requested */
 787         if (num_vfs && num_vfs == bp->pf.active_vfs)
 788                 goto sriov_cfg_exit;
 789
 790         /* if there are previous existing VFs, clean them up */
 791         bnxt_sriov_disable(bp);
 792         if (!num_vfs)
 793                 goto sriov_cfg_exit;
 794
 795         bnxt_sriov_enable(bp, &num_vfs);
 796
 797 sriov_cfg_exit:
 798         bp->sriov_cfg = false;
 799         wake_up(&bp->sriov_cfg_wait);
 800
 801         return num_vfs;
 802 }
 803
 804 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 805                               void *encap_resp, __le64 encap_resp_addr,
 806                               __le16 encap_resp_cpr, u32 msg_size)
 807 {
 808         int rc = 0;
 809         struct hwrm_fwd_resp_input req = {0};
 810         struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 811
 812         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
 813
 814         /* Set the new target id */
 815         req.target_id = cpu_to_le16(vf->fw_fid);
 816         req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 817         req.encap_resp_len = cpu_to_le16(msg_size);
 818         req.encap_resp_addr = encap_resp_addr;
 819         req.encap_resp_cmpl_ring = encap_resp_cpr;
 820         memcpy(req.encap_resp, encap_resp, msg_size);
 821
 822         mutex_lock(&bp->hwrm_cmd_lock);
 823         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 824
 825         if (rc) {
 826                 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
 827                 goto fwd_resp_exit;
 828         }
 829
 830         if (resp->error_code) {
 831                 netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
 832                            resp->error_code);
 833                 rc = -1;
 834         }
 835
 836 fwd_resp_exit:
 837         mutex_unlock(&bp->hwrm_cmd_lock);
 838         return rc;
 839 }
 840
 841 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 842                                   u32 msg_size)
 843 {
 844         int rc = 0;
 845         struct hwrm_reject_fwd_resp_input req = {0};
 846         struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 847
 848         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
 849         /* Set the new target id */
 850         req.target_id = cpu_to_le16(vf->fw_fid);
 851         req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 852         memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
 853
 854         mutex_lock(&bp->hwrm_cmd_lock);
 855         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 856
 857         if (rc) {
 858                 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
 859                 goto fwd_err_resp_exit;
 860         }
 861
 862         if (resp->error_code) {
 863                 netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
 864                            resp->error_code);
 865                 rc = -1;
 866         }
 867
 868 fwd_err_resp_exit:
 869         mutex_unlock(&bp->hwrm_cmd_lock);
 870         return rc;
 871 }
 872
 873 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 874                                    u32 msg_size)
 875 {
 876         int rc = 0;
 877         struct hwrm_exec_fwd_resp_input req = {0};
 878         struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 879
 880         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
 881         /* Set the new target id */
 882         req.target_id = cpu_to_le16(vf->fw_fid);
 883         req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 884         memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
 885
 886         mutex_lock(&bp->hwrm_cmd_lock);
 887         rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 888
 889         if (rc) {
 890                 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
 891                 goto exec_fwd_resp_exit;
 892         }
 893
 894         if (resp->error_code) {
 895                 netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
 896                            resp->error_code);
 897                 rc = -1;
 898         }
 899
 900 exec_fwd_resp_exit:
 901         mutex_unlock(&bp->hwrm_cmd_lock);
 902         return rc;
 903 }
 904
 905 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
 906 {
 907         u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
 908         struct hwrm_func_vf_cfg_input *req =
 909                 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
 910
 911         /* Allow VF to set a valid MAC address, if trust is set to on or
 912          * if the PF assigned MAC address is zero
 913          */
 914         if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
 915                 if (is_valid_ether_addr(req->dflt_mac_addr) &&
 916                     ((vf->flags & BNXT_VF_TRUST) ||
 917                      (!is_valid_ether_addr(vf->mac_addr)))) {
 918                         ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
 919                         return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 920                 }
 921                 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 922         }
 923         return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 924 }
 925
 926 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
 927 {
 928         u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
 929         struct hwrm_cfa_l2_filter_alloc_input *req =
 930                 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
 931         bool mac_ok = false;
 932
 933         if (!is_valid_ether_addr((const u8 *)req->l2_addr))
 934                 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 935
 936         /* Allow VF to set a valid MAC address, if trust is set to on.
 937          * Or VF MAC address must first match MAC address in PF's context.
 938          * Otherwise, it must match the VF MAC address if firmware spec >=
 939          * 1.2.2
 940          */
 941         if (vf->flags & BNXT_VF_TRUST) {
 942                 mac_ok = true;
 943         } else if (is_valid_ether_addr(vf->mac_addr)) {
 944                 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
 945                         mac_ok = true;
 946         } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
 947                 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
 948                         mac_ok = true;
 949         } else if (bp->hwrm_spec_code < 0x10202) {
 950                 mac_ok = true;
 951         } else {
 952                 mac_ok = true;
 953         }
 954         if (mac_ok)
 955                 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 956         return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 957 }
 958
 959 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
 960 {
 961         int rc = 0;
 962
 963         if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
 964                 /* real link */
 965                 rc = bnxt_hwrm_exec_fwd_resp(
 966                         bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
 967         } else {
 968                 struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
 969                 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
 970
 971                 phy_qcfg_req =
 972                 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
 973                 mutex_lock(&bp->hwrm_cmd_lock);
 974                 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
 975                        sizeof(phy_qcfg_resp));
 976                 mutex_unlock(&bp->hwrm_cmd_lock);
 977                 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
 978                 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
 979                 phy_qcfg_resp.valid = 1;
 980
 981                 if (vf->flags & BNXT_VF_LINK_UP) {
 982                         /* if physical link is down, force link up on VF */
 983                         if (phy_qcfg_resp.link !=
 984                             PORT_PHY_QCFG_RESP_LINK_LINK) {
 985                                 phy_qcfg_resp.link =
 986                                         PORT_PHY_QCFG_RESP_LINK_LINK;
 987                                 phy_qcfg_resp.link_speed = cpu_to_le16(
 988                                         PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
 989                                 phy_qcfg_resp.duplex_cfg =
 990                                         PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
 991                                 phy_qcfg_resp.duplex_state =
 992                                         PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
 993                                 phy_qcfg_resp.pause =
 994                                         (PORT_PHY_QCFG_RESP_PAUSE_TX |
 995                                          PORT_PHY_QCFG_RESP_PAUSE_RX);
 996                         }
 997                 } else {
 998                         /* force link down */
 999                         phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1000                         phy_qcfg_resp.link_speed = 0;
1001                         phy_qcfg_resp.duplex_state =
1002                                 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1003                         phy_qcfg_resp.pause = 0;
1004                 }
1005                 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1006                                         phy_qcfg_req->resp_addr,
1007                                         phy_qcfg_req->cmpl_ring,
1008                                         sizeof(phy_qcfg_resp));
1009         }
1010         return rc;
1011 }
1012
1013 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1014 {
1015         int rc = 0;
1016         struct input *encap_req = vf->hwrm_cmd_req_addr;
1017         u32 req_type = le16_to_cpu(encap_req->req_type);
1018
1019         switch (req_type) {
1020         case HWRM_FUNC_VF_CFG:
1021                 rc = bnxt_vf_configure_mac(bp, vf);
1022                 break;
1023         case HWRM_CFA_L2_FILTER_ALLOC:
1024                 rc = bnxt_vf_validate_set_mac(bp, vf);
1025                 break;
1026         case HWRM_FUNC_CFG:
1027                 /* TODO Validate if VF is allowed to change mac address,
1028                  * mtu, num of rings etc
1029                  */
1030                 rc = bnxt_hwrm_exec_fwd_resp(
1031                         bp, vf, sizeof(struct hwrm_func_cfg_input));
1032                 break;
1033         case HWRM_PORT_PHY_QCFG:
1034                 rc = bnxt_vf_set_link(bp, vf);
1035                 break;
1036         default:
1037                 break;
1038         }
1039         return rc;
1040 }
1041
1042 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1043 {
1044         u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1045
1046         /* Scan through VF's and process commands */
1047         while (1) {
1048                 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1049                 if (vf_id >= active_vfs)
1050                         break;
1051
1052                 clear_bit(vf_id, bp->pf.vf_event_bmap);
1053                 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1054                 i = vf_id + 1;
1055         }
1056 }
1057
1058 void bnxt_update_vf_mac(struct bnxt *bp)
1059 {
1060         struct hwrm_func_qcaps_input req = {0};
1061         struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
1062
1063         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
1064         req.fid = cpu_to_le16(0xffff);
1065
1066         mutex_lock(&bp->hwrm_cmd_lock);
1067         if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
1068                 goto update_vf_mac_exit;
1069
1070         /* Store MAC address from the firmware.  There are 2 cases:
1071          * 1. MAC address is valid.  It is assigned from the PF and we
1072          *    need to override the current VF MAC address with it.
1073          * 2. MAC address is zero.  The VF will use a random MAC address by
1074          *    default but the stored zero MAC will allow the VF user to change
1075          *    the random MAC address using ndo_set_mac_address() if he wants.
1076          */
1077         if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
1078                 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1079
1080         /* overwrite netdev dev_addr with admin VF MAC */
1081         if (is_valid_ether_addr(bp->vf.mac_addr))
1082                 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
1083 update_vf_mac_exit:
1084         mutex_unlock(&bp->hwrm_cmd_lock);
1085 }
1086
1087 int bnxt_approve_mac(struct bnxt *bp, u8 *mac)
1088 {
1089         struct hwrm_func_vf_cfg_input req = {0};
1090         int rc = 0;
1091
1092         if (!BNXT_VF(bp))
1093                 return 0;
1094
1095         if (bp->hwrm_spec_code < 0x10202) {
1096                 if (is_valid_ether_addr(bp->vf.mac_addr))
1097                         rc = -EADDRNOTAVAIL;
1098                 goto mac_done;
1099         }
1100         bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
1101         req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1102         memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
1103         rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
1104 mac_done:
1105         if (rc) {
1106                 rc = -EADDRNOTAVAIL;
1107                 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1108                             mac);
1109         }
1110         return rc;
1111 }
1112 #else
1113
1114 void bnxt_sriov_disable(struct bnxt *bp)
1115 {
1116 }
1117
1118 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1119 {
1120         netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1121 }
1122
1123 void bnxt_update_vf_mac(struct bnxt *bp)
1124 {
1125 }
1126
1127 int bnxt_approve_mac(struct bnxt *bp, u8 *mac)
1128 {
1129         return 0;
1130 }
1131 #endif