drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include "i40e.h"
  28
  29 /***********************misc routines*****************************/
  30
  31 /**
  32  * i40e_vc_isvalid_vsi_id
  33  * @vf: pointer to the vf info
  34  * @vsi_id: vf relative vsi id
  35  *
  36  * check for the valid vsi id
  37  **/
  38 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u8 vsi_id)
  39 {
  40         struct i40e_pf *pf = vf->pf;
  41
  42         return pf->vsi[vsi_id]->vf_id == vf->vf_id;
  43 }
  44
  45 /**
  46  * i40e_vc_isvalid_queue_id
  47  * @vf: pointer to the vf info
  48  * @vsi_id: vsi id
  49  * @qid: vsi relative queue id
  50  *
  51  * check for the valid queue id
  52  **/
  53 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u8 vsi_id,
  54                                             u8 qid)
  55 {
  56         struct i40e_pf *pf = vf->pf;
  57
  58         return qid < pf->vsi[vsi_id]->num_queue_pairs;
  59 }
  60
  61 /**
  62  * i40e_vc_isvalid_vector_id
  63  * @vf: pointer to the vf info
  64  * @vector_id: vf relative vector id
  65  *
  66  * check for the valid vector id
  67  **/
  68 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
  69 {
  70         struct i40e_pf *pf = vf->pf;
  71
  72         return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
  73 }
  74
  75 /***********************vf resource mgmt routines*****************/
  76
  77 /**
  78  * i40e_vc_get_pf_queue_id
  79  * @vf: pointer to the vf info
  80  * @vsi_idx: index of VSI in PF struct
  81  * @vsi_queue_id: vsi relative queue id
  82  *
  83  * return pf relative queue id
  84  **/
  85 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u8 vsi_idx,
  86                                    u8 vsi_queue_id)
  87 {
  88         struct i40e_pf *pf = vf->pf;
  89         struct i40e_vsi *vsi = pf->vsi[vsi_idx];
  90         u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
  91
  92         if (le16_to_cpu(vsi->info.mapping_flags) &
  93             I40E_AQ_VSI_QUE_MAP_NONCONTIG)
  94                 pf_queue_id =
  95                         le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
  96         else
  97                 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
  98                               vsi_queue_id;
  99
 100         return pf_queue_id;
 101 }
 102
 103 /**
 104  * i40e_config_irq_link_list
 105  * @vf: pointer to the vf info
 106  * @vsi_idx: index of VSI in PF struct
 107  * @vecmap: irq map info
 108  *
 109  * configure irq link list from the map
 110  **/
 111 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_idx,
 112                                       struct i40e_virtchnl_vector_map *vecmap)
 113 {
 114         unsigned long linklistmap = 0, tempmap;
 115         struct i40e_pf *pf = vf->pf;
 116         struct i40e_hw *hw = &pf->hw;
 117         u16 vsi_queue_id, pf_queue_id;
 118         enum i40e_queue_type qtype;
 119         u16 next_q, vector_id;
 120         u32 reg, reg_idx;
 121         u16 itr_idx = 0;
 122
 123         vector_id = vecmap->vector_id;
 124         /* setup the head */
 125         if (0 == vector_id)
 126                 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
 127         else
 128                 reg_idx = I40E_VPINT_LNKLSTN(
 129                      ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
 130                      (vector_id - 1));
 131
 132         if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
 133                 /* Special case - No queues mapped on this vector */
 134                 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
 135                 goto irq_list_done;
 136         }
 137         tempmap = vecmap->rxq_map;
 138         for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
 139                 linklistmap |= (1 <<
 140                                 (I40E_VIRTCHNL_SUPPORTED_QTYPES *
 141                                  vsi_queue_id));
 142         }
 143
 144         tempmap = vecmap->txq_map;
 145         for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
 146                 linklistmap |= (1 <<
 147                                 (I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id
 148                                  + 1));
 149         }
 150
 151         next_q = find_first_bit(&linklistmap,
 152                                 (I40E_MAX_VSI_QP *
 153                                  I40E_VIRTCHNL_SUPPORTED_QTYPES));
 154         vsi_queue_id = next_q/I40E_VIRTCHNL_SUPPORTED_QTYPES;
 155         qtype = next_q%I40E_VIRTCHNL_SUPPORTED_QTYPES;
 156         pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
 157         reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
 158
 159         wr32(hw, reg_idx, reg);
 160
 161         while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
 162                 switch (qtype) {
 163                 case I40E_QUEUE_TYPE_RX:
 164                         reg_idx = I40E_QINT_RQCTL(pf_queue_id);
 165                         itr_idx = vecmap->rxitr_idx;
 166                         break;
 167                 case I40E_QUEUE_TYPE_TX:
 168                         reg_idx = I40E_QINT_TQCTL(pf_queue_id);
 169                         itr_idx = vecmap->txitr_idx;
 170                         break;
 171                 default:
 172                         break;
 173                 }
 174
 175                 next_q = find_next_bit(&linklistmap,
 176                                        (I40E_MAX_VSI_QP *
 177                                         I40E_VIRTCHNL_SUPPORTED_QTYPES),
 178                                        next_q + 1);
 179                 if (next_q <
 180                     (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
 181                         vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
 182                         qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
 183                         pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx,
 184                                                               vsi_queue_id);
 185                 } else {
 186                         pf_queue_id = I40E_QUEUE_END_OF_LIST;
 187                         qtype = 0;
 188                 }
 189
 190                 /* format for the RQCTL & TQCTL regs is same */
 191                 reg = (vector_id) |
 192                     (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
 193                     (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
 194                     (1 << I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
 195                     (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
 196                 wr32(hw, reg_idx, reg);
 197         }
 198
 199 irq_list_done:
 200         i40e_flush(hw);
 201 }
 202
 203 /**
 204  * i40e_config_vsi_tx_queue
 205  * @vf: pointer to the vf info
 206  * @vsi_idx: index of VSI in PF struct
 207  * @vsi_queue_id: vsi relative queue index
 208  * @info: config. info
 209  *
 210  * configure tx queue
 211  **/
 212 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_idx,
 213                                     u16 vsi_queue_id,
 214                                     struct i40e_virtchnl_txq_info *info)
 215 {
 216         struct i40e_pf *pf = vf->pf;
 217         struct i40e_hw *hw = &pf->hw;
 218         struct i40e_hmc_obj_txq tx_ctx;
 219         u16 pf_queue_id;
 220         u32 qtx_ctl;
 221         int ret = 0;
 222
 223         pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
 224
 225         /* clear the context structure first */
 226         memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
 227
 228         /* only set the required fields */
 229         tx_ctx.base = info->dma_ring_addr / 128;
 230         tx_ctx.qlen = info->ring_len;
 231         tx_ctx.rdylist = le16_to_cpu(pf->vsi[vsi_idx]->info.qs_handle[0]);
 232         tx_ctx.rdylist_act = 0;
 233         tx_ctx.head_wb_ena = 1;
 234         tx_ctx.head_wb_addr = info->dma_ring_addr +
 235                               (info->ring_len * sizeof(struct i40e_tx_desc));
 236
 237         /* clear the context in the HMC */
 238         ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
 239         if (ret) {
 240                 dev_err(&pf->pdev->dev,
 241                         "Failed to clear VF LAN Tx queue context %d, error: %d\n",
 242                         pf_queue_id, ret);
 243                 ret = -ENOENT;
 244                 goto error_context;
 245         }
 246
 247         /* set the context in the HMC */
 248         ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
 249         if (ret) {
 250                 dev_err(&pf->pdev->dev,
 251                         "Failed to set VF LAN Tx queue context %d error: %d\n",
 252                         pf_queue_id, ret);
 253                 ret = -ENOENT;
 254                 goto error_context;
 255         }
 256
 257         /* associate this queue with the PCI VF function */
 258         qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
 259         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
 260                     & I40E_QTX_CTL_PF_INDX_MASK);
 261         qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
 262                      << I40E_QTX_CTL_VFVM_INDX_SHIFT)
 263                     & I40E_QTX_CTL_VFVM_INDX_MASK);
 264         wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
 265         i40e_flush(hw);
 266
 267 error_context:
 268         return ret;
 269 }
 270
 271 /**
 272  * i40e_config_vsi_rx_queue
 273  * @vf: pointer to the vf info
 274  * @vsi_idx: index of VSI in PF struct
 275  * @vsi_queue_id: vsi relative queue index
 276  * @info: config. info
 277  *
 278  * configure rx queue
 279  **/
 280 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_idx,
 281                                     u16 vsi_queue_id,
 282                                     struct i40e_virtchnl_rxq_info *info)
 283 {
 284         struct i40e_pf *pf = vf->pf;
 285         struct i40e_hw *hw = &pf->hw;
 286         struct i40e_hmc_obj_rxq rx_ctx;
 287         u16 pf_queue_id;
 288         int ret = 0;
 289
 290         pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
 291
 292         /* clear the context structure first */
 293         memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
 294
 295         /* only set the required fields */
 296         rx_ctx.base = info->dma_ring_addr / 128;
 297         rx_ctx.qlen = info->ring_len;
 298
 299         if (info->splithdr_enabled) {
 300                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
 301                                   I40E_RX_SPLIT_IP      |
 302                                   I40E_RX_SPLIT_TCP_UDP |
 303                                   I40E_RX_SPLIT_SCTP;
 304                 /* header length validation */
 305                 if (info->hdr_size > ((2 * 1024) - 64)) {
 306                         ret = -EINVAL;
 307                         goto error_param;
 308                 }
 309                 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
 310
 311                 /* set splitalways mode 10b */
 312                 rx_ctx.dtype = 0x2;
 313         }
 314
 315         /* databuffer length validation */
 316         if (info->databuffer_size > ((16 * 1024) - 128)) {
 317                 ret = -EINVAL;
 318                 goto error_param;
 319         }
 320         rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
 321
 322         /* max pkt. length validation */
 323         if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
 324                 ret = -EINVAL;
 325                 goto error_param;
 326         }
 327         rx_ctx.rxmax = info->max_pkt_size;
 328
 329         /* enable 32bytes desc always */
 330         rx_ctx.dsize = 1;
 331
 332         /* default values */
 333         rx_ctx.tphrdesc_ena = 1;
 334         rx_ctx.tphwdesc_ena = 1;
 335         rx_ctx.tphdata_ena = 1;
 336         rx_ctx.tphhead_ena = 1;
 337         rx_ctx.lrxqthresh = 2;
 338         rx_ctx.crcstrip = 1;
 339
 340         /* clear the context in the HMC */
 341         ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
 342         if (ret) {
 343                 dev_err(&pf->pdev->dev,
 344                         "Failed to clear VF LAN Rx queue context %d, error: %d\n",
 345                         pf_queue_id, ret);
 346                 ret = -ENOENT;
 347                 goto error_param;
 348         }
 349
 350         /* set the context in the HMC */
 351         ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
 352         if (ret) {
 353                 dev_err(&pf->pdev->dev,
 354                         "Failed to set VF LAN Rx queue context %d error: %d\n",
 355                         pf_queue_id, ret);
 356                 ret = -ENOENT;
 357                 goto error_param;
 358         }
 359
 360 error_param:
 361         return ret;
 362 }
 363
 364 /**
 365  * i40e_alloc_vsi_res
 366  * @vf: pointer to the vf info
 367  * @type: type of VSI to allocate
 368  *
 369  * alloc vf vsi context & resources
 370  **/
 371 static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
 372 {
 373         struct i40e_mac_filter *f = NULL;
 374         struct i40e_pf *pf = vf->pf;
 375         struct i40e_vsi *vsi;
 376         int ret = 0;
 377
 378         vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
 379
 380         if (!vsi) {
 381                 dev_err(&pf->pdev->dev,
 382                         "add vsi failed for vf %d, aq_err %d\n",
 383                         vf->vf_id, pf->hw.aq.asq_last_status);
 384                 ret = -ENOENT;
 385                 goto error_alloc_vsi_res;
 386         }
 387         if (type == I40E_VSI_SRIOV) {
 388                 u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 389                 vf->lan_vsi_index = vsi->idx;
 390                 vf->lan_vsi_id = vsi->id;
 391                 dev_info(&pf->pdev->dev,
 392                          "VF %d assigned LAN VSI index %d, VSI id %d\n",
 393                          vf->vf_id, vsi->idx, vsi->id);
 394                 /* If the port VLAN has been configured and then the
 395                  * VF driver was removed then the VSI port VLAN
 396                  * configuration was destroyed.  Check if there is
 397                  * a port VLAN and restore the VSI configuration if
 398                  * needed.
 399                  */
 400                 if (vf->port_vlan_id)
 401                         i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
 402                 f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
 403                                     vf->port_vlan_id, true, false);
 404                 if (!f)
 405                         dev_info(&pf->pdev->dev,
 406                                  "Could not allocate VF MAC addr\n");
 407                 f = i40e_add_filter(vsi, brdcast, vf->port_vlan_id,
 408                                     true, false);
 409                 if (!f)
 410                         dev_info(&pf->pdev->dev,
 411                                  "Could not allocate VF broadcast filter\n");
 412         }
 413
 414         /* program mac filter */
 415         ret = i40e_sync_vsi_filters(vsi);
 416         if (ret)
 417                 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
 418
 419 error_alloc_vsi_res:
 420         return ret;
 421 }
 422
 423 /**
 424  * i40e_enable_vf_mappings
 425  * @vf: pointer to the vf info
 426  *
 427  * enable vf mappings
 428  **/
 429 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
 430 {
 431         struct i40e_pf *pf = vf->pf;
 432         struct i40e_hw *hw = &pf->hw;
 433         u32 reg, total_queue_pairs = 0;
 434         int j;
 435
 436         /* Tell the hardware we're using noncontiguous mapping. HW requires
 437          * that VF queues be mapped using this method, even when they are
 438          * contiguous in real life
 439          */
 440         wr32(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
 441              I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
 442
 443         /* enable VF vplan_qtable mappings */
 444         reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
 445         wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
 446
 447         /* map PF queues to VF queues */
 448         for (j = 0; j < pf->vsi[vf->lan_vsi_index]->num_queue_pairs; j++) {
 449                 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index, j);
 450                 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
 451                 wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
 452                 total_queue_pairs++;
 453         }
 454
 455         /* map PF queues to VSI */
 456         for (j = 0; j < 7; j++) {
 457                 if (j * 2 >= pf->vsi[vf->lan_vsi_index]->num_queue_pairs) {
 458                         reg = 0x07FF07FF;       /* unused */
 459                 } else {
 460                         u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index,
 461                                                           j * 2);
 462                         reg = qid;
 463                         qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index,
 464                                                       (j * 2) + 1);
 465                         reg |= qid << 16;
 466                 }
 467                 wr32(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id), reg);
 468         }
 469
 470         i40e_flush(hw);
 471 }
 472
 473 /**
 474  * i40e_disable_vf_mappings
 475  * @vf: pointer to the vf info
 476  *
 477  * disable vf mappings
 478  **/
 479 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
 480 {
 481         struct i40e_pf *pf = vf->pf;
 482         struct i40e_hw *hw = &pf->hw;
 483         int i;
 484
 485         /* disable qp mappings */
 486         wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
 487         for (i = 0; i < I40E_MAX_VSI_QP; i++)
 488                 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
 489                      I40E_QUEUE_END_OF_LIST);
 490         i40e_flush(hw);
 491 }
 492
 493 /**
 494  * i40e_free_vf_res
 495  * @vf: pointer to the vf info
 496  *
 497  * free vf resources
 498  **/
 499 static void i40e_free_vf_res(struct i40e_vf *vf)
 500 {
 501         struct i40e_pf *pf = vf->pf;
 502         struct i40e_hw *hw = &pf->hw;
 503         u32 reg_idx, reg;
 504         int i, msix_vf;
 505
 506         /* free vsi & disconnect it from the parent uplink */
 507         if (vf->lan_vsi_index) {
 508                 i40e_vsi_release(pf->vsi[vf->lan_vsi_index]);
 509                 vf->lan_vsi_index = 0;
 510                 vf->lan_vsi_id = 0;
 511         }
 512         msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
 513
 514         /* disable interrupts so the VF starts in a known state */
 515         for (i = 0; i < msix_vf; i++) {
 516                 /* format is same for both registers */
 517                 if (0 == i)
 518                         reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
 519                 else
 520                         reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
 521                                                       (vf->vf_id))
 522                                                      + (i - 1));
 523                 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
 524                 i40e_flush(hw);
 525         }
 526
 527         /* clear the irq settings */
 528         for (i = 0; i < msix_vf; i++) {
 529                 /* format is same for both registers */
 530                 if (0 == i)
 531                         reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
 532                 else
 533                         reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
 534                                                       (vf->vf_id))
 535                                                      + (i - 1));
 536                 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
 537                        I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
 538                 wr32(hw, reg_idx, reg);
 539                 i40e_flush(hw);
 540         }
 541         /* reset some of the state varibles keeping
 542          * track of the resources
 543          */
 544         vf->num_queue_pairs = 0;
 545         vf->vf_states = 0;
 546 }
 547
 548 /**
 549  * i40e_alloc_vf_res
 550  * @vf: pointer to the vf info
 551  *
 552  * allocate vf resources
 553  **/
 554 static int i40e_alloc_vf_res(struct i40e_vf *vf)
 555 {
 556         struct i40e_pf *pf = vf->pf;
 557         int total_queue_pairs = 0;
 558         int ret;
 559
 560         /* allocate hw vsi context & associated resources */
 561         ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
 562         if (ret)
 563                 goto error_alloc;
 564         total_queue_pairs += pf->vsi[vf->lan_vsi_index]->num_queue_pairs;
 565         set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
 566
 567         /* store the total qps number for the runtime
 568          * vf req validation
 569          */
 570         vf->num_queue_pairs = total_queue_pairs;
 571
 572         /* vf is now completely initialized */
 573         set_bit(I40E_VF_STAT_INIT, &vf->vf_states);
 574
 575 error_alloc:
 576         if (ret)
 577                 i40e_free_vf_res(vf);
 578
 579         return ret;
 580 }
 581
 582 #define VF_DEVICE_STATUS 0xAA
 583 #define VF_TRANS_PENDING_MASK 0x20
 584 /**
 585  * i40e_quiesce_vf_pci
 586  * @vf: pointer to the vf structure
 587  *
 588  * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
 589  * if the transactions never clear.
 590  **/
 591 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
 592 {
 593         struct i40e_pf *pf = vf->pf;
 594         struct i40e_hw *hw = &pf->hw;
 595         int vf_abs_id, i;
 596         u32 reg;
 597
 598         vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
 599
 600         wr32(hw, I40E_PF_PCI_CIAA,
 601              VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
 602         for (i = 0; i < 100; i++) {
 603                 reg = rd32(hw, I40E_PF_PCI_CIAD);
 604                 if ((reg & VF_TRANS_PENDING_MASK) == 0)
 605                         return 0;
 606                 udelay(1);
 607         }
 608         return -EIO;
 609 }
 610
 611 /**
 612  * i40e_reset_vf
 613  * @vf: pointer to the vf structure
 614  * @flr: VFLR was issued or not
 615  *
 616  * reset the vf
 617  **/
 618 void i40e_reset_vf(struct i40e_vf *vf, bool flr)
 619 {
 620         struct i40e_pf *pf = vf->pf;
 621         struct i40e_hw *hw = &pf->hw;
 622         bool rsd = false;
 623         int i;
 624         u32 reg;
 625
 626         /* warn the VF */
 627         clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
 628
 629         /* In the case of a VFLR, the HW has already reset the VF and we
 630          * just need to clean up, so don't hit the VFRTRIG register.
 631          */
 632         if (!flr) {
 633                 /* reset vf using VPGEN_VFRTRIG reg */
 634                 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
 635                 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
 636                 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
 637                 i40e_flush(hw);
 638         }
 639
 640         if (i40e_quiesce_vf_pci(vf))
 641                 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
 642                         vf->vf_id);
 643
 644         /* poll VPGEN_VFRSTAT reg to make sure
 645          * that reset is complete
 646          */
 647         for (i = 0; i < 100; i++) {
 648                 /* vf reset requires driver to first reset the
 649                  * vf & than poll the status register to make sure
 650                  * that the requested op was completed
 651                  * successfully
 652                  */
 653                 udelay(10);
 654                 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
 655                 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
 656                         rsd = true;
 657                         break;
 658                 }
 659         }
 660
 661         if (!rsd)
 662                 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
 663                         vf->vf_id);
 664         wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
 665         /* clear the reset bit in the VPGEN_VFRTRIG reg */
 666         reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
 667         reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
 668         wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
 669
 670         /* On initial reset, we won't have any queues */
 671         if (vf->lan_vsi_index == 0)
 672                 goto complete_reset;
 673
 674         i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_index], false);
 675 complete_reset:
 676         /* reallocate vf resources to reset the VSI state */
 677         i40e_free_vf_res(vf);
 678         i40e_alloc_vf_res(vf);
 679         i40e_enable_vf_mappings(vf);
 680         set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
 681
 682         /* tell the VF the reset is done */
 683         wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
 684         i40e_flush(hw);
 685 }
 686
 687 /**
 688  * i40e_vfs_are_assigned
 689  * @pf: pointer to the pf structure
 690  *
 691  * Determine if any VFs are assigned to VMs
 692  **/
 693 static bool i40e_vfs_are_assigned(struct i40e_pf *pf)
 694 {
 695         struct pci_dev *pdev = pf->pdev;
 696         struct pci_dev *vfdev;
 697
 698         /* loop through all the VFs to see if we own any that are assigned */
 699         vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, I40E_DEV_ID_VF , NULL);
 700         while (vfdev) {
 701                 /* if we don't own it we don't care */
 702                 if (vfdev->is_virtfn && pci_physfn(vfdev) == pdev) {
 703                         /* if it is assigned we cannot release it */
 704                         if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
 705                                 return true;
 706                 }
 707
 708                 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
 709                                        I40E_DEV_ID_VF,
 710                                        vfdev);
 711         }
 712
 713         return false;
 714 }
 715 #ifdef CONFIG_PCI_IOV
 716
 717 /**
 718  * i40e_enable_pf_switch_lb
 719  * @pf: pointer to the pf structure
 720  *
 721  * enable switch loop back or die - no point in a return value
 722  **/
 723 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
 724 {
 725         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 726         struct i40e_vsi_context ctxt;
 727         int aq_ret;
 728
 729         ctxt.seid = pf->main_vsi_seid;
 730         ctxt.pf_num = pf->hw.pf_id;
 731         ctxt.vf_num = 0;
 732         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
 733         if (aq_ret) {
 734                 dev_info(&pf->pdev->dev,
 735                          "%s couldn't get pf vsi config, err %d, aq_err %d\n",
 736                          __func__, aq_ret, pf->hw.aq.asq_last_status);
 737                 return;
 738         }
 739         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
 740         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
 741         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
 742
 743         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
 744         if (aq_ret) {
 745                 dev_info(&pf->pdev->dev,
 746                          "%s: update vsi switch failed, aq_err=%d\n",
 747                          __func__, vsi->back->hw.aq.asq_last_status);
 748         }
 749 }
 750 #endif
 751
 752 /**
 753  * i40e_disable_pf_switch_lb
 754  * @pf: pointer to the pf structure
 755  *
 756  * disable switch loop back or die - no point in a return value
 757  **/
 758 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
 759 {
 760         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 761         struct i40e_vsi_context ctxt;
 762         int aq_ret;
 763
 764         ctxt.seid = pf->main_vsi_seid;
 765         ctxt.pf_num = pf->hw.pf_id;
 766         ctxt.vf_num = 0;
 767         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
 768         if (aq_ret) {
 769                 dev_info(&pf->pdev->dev,
 770                          "%s couldn't get pf vsi config, err %d, aq_err %d\n",
 771                          __func__, aq_ret, pf->hw.aq.asq_last_status);
 772                 return;
 773         }
 774         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
 775         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
 776         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
 777
 778         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
 779         if (aq_ret) {
 780                 dev_info(&pf->pdev->dev,
 781                          "%s: update vsi switch failed, aq_err=%d\n",
 782                          __func__, vsi->back->hw.aq.asq_last_status);
 783         }
 784 }
 785
 786 /**
 787  * i40e_free_vfs
 788  * @pf: pointer to the pf structure
 789  *
 790  * free vf resources
 791  **/
 792 void i40e_free_vfs(struct i40e_pf *pf)
 793 {
 794         struct i40e_hw *hw = &pf->hw;
 795         u32 reg_idx, bit_idx;
 796         int i, tmp, vf_id;
 797
 798         if (!pf->vf)
 799                 return;
 800
 801         /* Disable interrupt 0 so we don't try to handle the VFLR. */
 802         i40e_irq_dynamic_disable_icr0(pf);
 803
 804         mdelay(10); /* let any messages in transit get finished up */
 805         /* free up vf resources */
 806         tmp = pf->num_alloc_vfs;
 807         pf->num_alloc_vfs = 0;
 808         for (i = 0; i < tmp; i++) {
 809                 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
 810                         i40e_free_vf_res(&pf->vf[i]);
 811                 /* disable qp mappings */
 812                 i40e_disable_vf_mappings(&pf->vf[i]);
 813         }
 814
 815         kfree(pf->vf);
 816         pf->vf = NULL;
 817
 818         if (!i40e_vfs_are_assigned(pf)) {
 819                 pci_disable_sriov(pf->pdev);
 820                 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
 821                  * work correctly when SR-IOV gets re-enabled.
 822                  */
 823                 for (vf_id = 0; vf_id < tmp; vf_id++) {
 824                         reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
 825                         bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
 826                         wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
 827                 }
 828                 i40e_disable_pf_switch_lb(pf);
 829         } else {
 830                 dev_warn(&pf->pdev->dev,
 831                          "unable to disable SR-IOV because VFs are assigned.\n");
 832         }
 833
 834         /* Re-enable interrupt 0. */
 835         i40e_irq_dynamic_enable_icr0(pf);
 836 }
 837
 838 #ifdef CONFIG_PCI_IOV
 839 /**
 840  * i40e_alloc_vfs
 841  * @pf: pointer to the pf structure
 842  * @num_alloc_vfs: number of vfs to allocate
 843  *
 844  * allocate vf resources
 845  **/
 846 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
 847 {
 848         struct i40e_vf *vfs;
 849         int i, ret = 0;
 850
 851         /* Disable interrupt 0 so we don't try to handle the VFLR. */
 852         i40e_irq_dynamic_disable_icr0(pf);
 853
 854         /* Check to see if we're just allocating resources for extant VFs */
 855         if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
 856                 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
 857                 if (ret) {
 858                         dev_err(&pf->pdev->dev,
 859                                 "Failed to enable SR-IOV, error %d.\n", ret);
 860                         pf->num_alloc_vfs = 0;
 861                         goto err_iov;
 862                 }
 863         }
 864         /* allocate memory */
 865         vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
 866         if (!vfs) {
 867                 ret = -ENOMEM;
 868                 goto err_alloc;
 869         }
 870
 871         /* apply default profile */
 872         for (i = 0; i < num_alloc_vfs; i++) {
 873                 vfs[i].pf = pf;
 874                 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
 875                 vfs[i].vf_id = i;
 876
 877                 /* assign default capabilities */
 878                 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
 879                 /* vf resources get allocated during reset */
 880                 i40e_reset_vf(&vfs[i], false);
 881
 882                 /* enable vf vplan_qtable mappings */
 883                 i40e_enable_vf_mappings(&vfs[i]);
 884         }
 885         pf->vf = vfs;
 886         pf->num_alloc_vfs = num_alloc_vfs;
 887
 888         i40e_enable_pf_switch_lb(pf);
 889 err_alloc:
 890         if (ret)
 891                 i40e_free_vfs(pf);
 892 err_iov:
 893         /* Re-enable interrupt 0. */
 894         i40e_irq_dynamic_enable_icr0(pf);
 895         return ret;
 896 }
 897
 898 #endif
 899 /**
 900  * i40e_pci_sriov_enable
 901  * @pdev: pointer to a pci_dev structure
 902  * @num_vfs: number of vfs to allocate
 903  *
 904  * Enable or change the number of VFs
 905  **/
 906 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
 907 {
 908 #ifdef CONFIG_PCI_IOV
 909         struct i40e_pf *pf = pci_get_drvdata(pdev);
 910         int pre_existing_vfs = pci_num_vf(pdev);
 911         int err = 0;
 912
 913         dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
 914         if (pre_existing_vfs && pre_existing_vfs != num_vfs)
 915                 i40e_free_vfs(pf);
 916         else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
 917                 goto out;
 918
 919         if (num_vfs > pf->num_req_vfs) {
 920                 err = -EPERM;
 921                 goto err_out;
 922         }
 923
 924         err = i40e_alloc_vfs(pf, num_vfs);
 925         if (err) {
 926                 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
 927                 goto err_out;
 928         }
 929
 930 out:
 931         return num_vfs;
 932
 933 err_out:
 934         return err;
 935 #endif
 936         return 0;
 937 }
 938
 939 /**
 940  * i40e_pci_sriov_configure
 941  * @pdev: pointer to a pci_dev structure
 942  * @num_vfs: number of vfs to allocate
 943  *
 944  * Enable or change the number of VFs. Called when the user updates the number
 945  * of VFs in sysfs.
 946  **/
 947 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
 948 {
 949         struct i40e_pf *pf = pci_get_drvdata(pdev);
 950
 951         if (num_vfs)
 952                 return i40e_pci_sriov_enable(pdev, num_vfs);
 953
 954         i40e_free_vfs(pf);
 955         return 0;
 956 }
 957
 958 /***********************virtual channel routines******************/
 959
 960 /**
 961  * i40e_vc_send_msg_to_vf
 962  * @vf: pointer to the vf info
 963  * @v_opcode: virtual channel opcode
 964  * @v_retval: virtual channel return value
 965  * @msg: pointer to the msg buffer
 966  * @msglen: msg length
 967  *
 968  * send msg to vf
 969  **/
 970 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
 971                                   u32 v_retval, u8 *msg, u16 msglen)
 972 {
 973         struct i40e_pf *pf = vf->pf;
 974         struct i40e_hw *hw = &pf->hw;
 975         int true_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
 976         i40e_status aq_ret;
 977
 978         /* single place to detect unsuccessful return values */
 979         if (v_retval) {
 980                 vf->num_invalid_msgs++;
 981                 dev_err(&pf->pdev->dev, "Failed opcode %d Error: %d\n",
 982                         v_opcode, v_retval);
 983                 if (vf->num_invalid_msgs >
 984                     I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
 985                         dev_err(&pf->pdev->dev,
 986                                 "Number of invalid messages exceeded for VF %d\n",
 987                                 vf->vf_id);
 988                         dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
 989                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
 990                 }
 991         } else {
 992                 vf->num_valid_msgs++;
 993         }
 994
 995         aq_ret = i40e_aq_send_msg_to_vf(hw, true_vf_id, v_opcode, v_retval,
 996                                         msg, msglen, NULL);
 997         if (aq_ret) {
 998                 dev_err(&pf->pdev->dev,
 999                         "Unable to send the message to VF %d aq_err %d\n",
1000                         vf->vf_id, pf->hw.aq.asq_last_status);
1001                 return -EIO;
1002         }
1003
1004         return 0;
1005 }
1006
1007 /**
1008  * i40e_vc_send_resp_to_vf
1009  * @vf: pointer to the vf info
1010  * @opcode: operation code
1011  * @retval: return value
1012  *
1013  * send resp msg to vf
1014  **/
1015 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1016                                    enum i40e_virtchnl_ops opcode,
1017                                    i40e_status retval)
1018 {
1019         return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1020 }
1021
1022 /**
1023  * i40e_vc_get_version_msg
1024  * @vf: pointer to the vf info
1025  *
1026  * called from the vf to request the API version used by the PF
1027  **/
1028 static int i40e_vc_get_version_msg(struct i40e_vf *vf)
1029 {
1030         struct i40e_virtchnl_version_info info = {
1031                 I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
1032         };
1033
1034         return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
1035                                       I40E_SUCCESS, (u8 *)&info,
1036                                       sizeof(struct
1037                                              i40e_virtchnl_version_info));
1038 }
1039
1040 /**
1041  * i40e_vc_get_vf_resources_msg
1042  * @vf: pointer to the vf info
1043  * @msg: pointer to the msg buffer
1044  * @msglen: msg length
1045  *
1046  * called from the vf to request its resources
1047  **/
1048 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf)
1049 {
1050         struct i40e_virtchnl_vf_resource *vfres = NULL;
1051         struct i40e_pf *pf = vf->pf;
1052         i40e_status aq_ret = 0;
1053         struct i40e_vsi *vsi;
1054         int i = 0, len = 0;
1055         int num_vsis = 1;
1056         int ret;
1057
1058         if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
1059                 aq_ret = I40E_ERR_PARAM;
1060                 goto err;
1061         }
1062
1063         len = (sizeof(struct i40e_virtchnl_vf_resource) +
1064                sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);
1065
1066         vfres = kzalloc(len, GFP_KERNEL);
1067         if (!vfres) {
1068                 aq_ret = I40E_ERR_NO_MEMORY;
1069                 len = 0;
1070                 goto err;
1071         }
1072
1073         vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
1074         vsi = pf->vsi[vf->lan_vsi_index];
1075         if (!vsi->info.pvid)
1076                 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1077
1078         vfres->num_vsis = num_vsis;
1079         vfres->num_queue_pairs = vf->num_queue_pairs;
1080         vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1081         if (vf->lan_vsi_index) {
1082                 vfres->vsi_res[i].vsi_id = vf->lan_vsi_index;
1083                 vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV;
1084                 vfres->vsi_res[i].num_queue_pairs =
1085                     pf->vsi[vf->lan_vsi_index]->num_queue_pairs;
1086                 memcpy(vfres->vsi_res[i].default_mac_addr,
1087                        vf->default_lan_addr.addr, ETH_ALEN);
1088                 i++;
1089         }
1090         set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
1091
1092 err:
1093         /* send the response back to the vf */
1094         ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
1095                                      aq_ret, (u8 *)vfres, len);
1096
1097         kfree(vfres);
1098         return ret;
1099 }
1100
1101 /**
1102  * i40e_vc_reset_vf_msg
1103  * @vf: pointer to the vf info
1104  * @msg: pointer to the msg buffer
1105  * @msglen: msg length
1106  *
1107  * called from the vf to reset itself,
1108  * unlike other virtchnl messages, pf driver
1109  * doesn't send the response back to the vf
1110  **/
1111 static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1112 {
1113         if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
1114                 i40e_reset_vf(vf, false);
1115 }
1116
1117 /**
1118  * i40e_vc_config_promiscuous_mode_msg
1119  * @vf: pointer to the vf info
1120  * @msg: pointer to the msg buffer
1121  * @msglen: msg length
1122  *
1123  * called from the vf to configure the promiscuous mode of
1124  * vf vsis
1125  **/
1126 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
1127                                                u8 *msg, u16 msglen)
1128 {
1129         struct i40e_virtchnl_promisc_info *info =
1130             (struct i40e_virtchnl_promisc_info *)msg;
1131         struct i40e_pf *pf = vf->pf;
1132         struct i40e_hw *hw = &pf->hw;
1133         bool allmulti = false;
1134         bool promisc = false;
1135         i40e_status aq_ret;
1136
1137         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1138             !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1139             !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
1140             (pf->vsi[info->vsi_id]->type != I40E_VSI_FCOE)) {
1141                 aq_ret = I40E_ERR_PARAM;
1142                 goto error_param;
1143         }
1144
1145         if (info->flags & I40E_FLAG_VF_UNICAST_PROMISC)
1146                 promisc = true;
1147         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, info->vsi_id,
1148                                                      promisc, NULL);
1149         if (aq_ret)
1150                 goto error_param;
1151
1152         if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
1153                 allmulti = true;
1154         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, info->vsi_id,
1155                                                        allmulti, NULL);
1156
1157 error_param:
1158         /* send the response to the vf */
1159         return i40e_vc_send_resp_to_vf(vf,
1160                                        I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
1161                                        aq_ret);
1162 }
1163
1164 /**
1165  * i40e_vc_config_queues_msg
1166  * @vf: pointer to the vf info
1167  * @msg: pointer to the msg buffer
1168  * @msglen: msg length
1169  *
1170  * called from the vf to configure the rx/tx
1171  * queues
1172  **/
1173 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1174 {
1175         struct i40e_virtchnl_vsi_queue_config_info *qci =
1176             (struct i40e_virtchnl_vsi_queue_config_info *)msg;
1177         struct i40e_virtchnl_queue_pair_info *qpi;
1178         u16 vsi_id, vsi_queue_id;
1179         i40e_status aq_ret = 0;
1180         int i;
1181
1182         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1183                 aq_ret = I40E_ERR_PARAM;
1184                 goto error_param;
1185         }
1186
1187         vsi_id = qci->vsi_id;
1188         if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1189                 aq_ret = I40E_ERR_PARAM;
1190                 goto error_param;
1191         }
1192         for (i = 0; i < qci->num_queue_pairs; i++) {
1193                 qpi = &qci->qpair[i];
1194                 vsi_queue_id = qpi->txq.queue_id;
1195                 if ((qpi->txq.vsi_id != vsi_id) ||
1196                     (qpi->rxq.vsi_id != vsi_id) ||
1197                     (qpi->rxq.queue_id != vsi_queue_id) ||
1198                     !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
1199                         aq_ret = I40E_ERR_PARAM;
1200                         goto error_param;
1201                 }
1202
1203                 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
1204                                              &qpi->rxq) ||
1205                     i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
1206                                              &qpi->txq)) {
1207                         aq_ret = I40E_ERR_PARAM;
1208                         goto error_param;
1209                 }
1210         }
1211
1212 error_param:
1213         /* send the response to the vf */
1214         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
1215                                        aq_ret);
1216 }
1217
1218 /**
1219  * i40e_vc_config_irq_map_msg
1220  * @vf: pointer to the vf info
1221  * @msg: pointer to the msg buffer
1222  * @msglen: msg length
1223  *
1224  * called from the vf to configure the irq to
1225  * queue map
1226  **/
1227 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1228 {
1229         struct i40e_virtchnl_irq_map_info *irqmap_info =
1230             (struct i40e_virtchnl_irq_map_info *)msg;
1231         struct i40e_virtchnl_vector_map *map;
1232         u16 vsi_id, vsi_queue_id, vector_id;
1233         i40e_status aq_ret = 0;
1234         unsigned long tempmap;
1235         int i;
1236
1237         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1238                 aq_ret = I40E_ERR_PARAM;
1239                 goto error_param;
1240         }
1241
1242         for (i = 0; i < irqmap_info->num_vectors; i++) {
1243                 map = &irqmap_info->vecmap[i];
1244
1245                 vector_id = map->vector_id;
1246                 vsi_id = map->vsi_id;
1247                 /* validate msg params */
1248                 if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
1249                     !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1250                         aq_ret = I40E_ERR_PARAM;
1251                         goto error_param;
1252                 }
1253
1254                 /* lookout for the invalid queue index */
1255                 tempmap = map->rxq_map;
1256                 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1257                         if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1258                                                       vsi_queue_id)) {
1259                                 aq_ret = I40E_ERR_PARAM;
1260                                 goto error_param;
1261                         }
1262                 }
1263
1264                 tempmap = map->txq_map;
1265                 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1266                         if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1267                                                       vsi_queue_id)) {
1268                                 aq_ret = I40E_ERR_PARAM;
1269                                 goto error_param;
1270                         }
1271                 }
1272
1273                 i40e_config_irq_link_list(vf, vsi_id, map);
1274         }
1275 error_param:
1276         /* send the response to the vf */
1277         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
1278                                        aq_ret);
1279 }
1280
1281 /**
1282  * i40e_vc_enable_queues_msg
1283  * @vf: pointer to the vf info
1284  * @msg: pointer to the msg buffer
1285  * @msglen: msg length
1286  *
1287  * called from the vf to enable all or specific queue(s)
1288  **/
1289 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1290 {
1291         struct i40e_virtchnl_queue_select *vqs =
1292             (struct i40e_virtchnl_queue_select *)msg;
1293         struct i40e_pf *pf = vf->pf;
1294         u16 vsi_id = vqs->vsi_id;
1295         i40e_status aq_ret = 0;
1296
1297         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1298                 aq_ret = I40E_ERR_PARAM;
1299                 goto error_param;
1300         }
1301
1302         if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1303                 aq_ret = I40E_ERR_PARAM;
1304                 goto error_param;
1305         }
1306
1307         if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1308                 aq_ret = I40E_ERR_PARAM;
1309                 goto error_param;
1310         }
1311         if (i40e_vsi_control_rings(pf->vsi[vsi_id], true))
1312                 aq_ret = I40E_ERR_TIMEOUT;
1313 error_param:
1314         /* send the response to the vf */
1315         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
1316                                        aq_ret);
1317 }
1318
1319 /**
1320  * i40e_vc_disable_queues_msg
1321  * @vf: pointer to the vf info
1322  * @msg: pointer to the msg buffer
1323  * @msglen: msg length
1324  *
1325  * called from the vf to disable all or specific
1326  * queue(s)
1327  **/
1328 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1329 {
1330         struct i40e_virtchnl_queue_select *vqs =
1331             (struct i40e_virtchnl_queue_select *)msg;
1332         struct i40e_pf *pf = vf->pf;
1333         u16 vsi_id = vqs->vsi_id;
1334         i40e_status aq_ret = 0;
1335
1336         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1337                 aq_ret = I40E_ERR_PARAM;
1338                 goto error_param;
1339         }
1340
1341         if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1342                 aq_ret = I40E_ERR_PARAM;
1343                 goto error_param;
1344         }
1345
1346         if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1347                 aq_ret = I40E_ERR_PARAM;
1348                 goto error_param;
1349         }
1350         if (i40e_vsi_control_rings(pf->vsi[vsi_id], false))
1351                 aq_ret = I40E_ERR_TIMEOUT;
1352
1353 error_param:
1354         /* send the response to the vf */
1355         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
1356                                        aq_ret);
1357 }
1358
1359 /**
1360  * i40e_vc_get_stats_msg
1361  * @vf: pointer to the vf info
1362  * @msg: pointer to the msg buffer
1363  * @msglen: msg length
1364  *
1365  * called from the vf to get vsi stats
1366  **/
1367 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1368 {
1369         struct i40e_virtchnl_queue_select *vqs =
1370             (struct i40e_virtchnl_queue_select *)msg;
1371         struct i40e_pf *pf = vf->pf;
1372         struct i40e_eth_stats stats;
1373         i40e_status aq_ret = 0;
1374         struct i40e_vsi *vsi;
1375
1376         memset(&stats, 0, sizeof(struct i40e_eth_stats));
1377
1378         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1379                 aq_ret = I40E_ERR_PARAM;
1380                 goto error_param;
1381         }
1382
1383         if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1384                 aq_ret = I40E_ERR_PARAM;
1385                 goto error_param;
1386         }
1387
1388         vsi = pf->vsi[vqs->vsi_id];
1389         if (!vsi) {
1390                 aq_ret = I40E_ERR_PARAM;
1391                 goto error_param;
1392         }
1393         i40e_update_eth_stats(vsi);
1394         stats = vsi->eth_stats;
1395
1396 error_param:
1397         /* send the response back to the vf */
1398         return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
1399                                       (u8 *)&stats, sizeof(stats));
1400 }
1401
1402 /**
1403  * i40e_check_vf_permission
1404  * @vf: pointer to the vf info
1405  * @macaddr: pointer to the MAC Address being checked
1406  *
1407  * Check if the VF has permission to add or delete unicast MAC address
1408  * filters and return error code -EPERM if not.  Then check if the
1409  * address filter requested is broadcast or zero and if so return
1410  * an invalid MAC address error code.
1411  **/
1412 static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
1413 {
1414         struct i40e_pf *pf = vf->pf;
1415         int ret = 0;
1416
1417         if (is_broadcast_ether_addr(macaddr) ||
1418                    is_zero_ether_addr(macaddr)) {
1419                 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
1420                 ret = I40E_ERR_INVALID_MAC_ADDR;
1421         } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
1422                    !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
1423                 /* If the host VMM administrator has set the VF MAC address
1424                  * administratively via the ndo_set_vf_mac command then deny
1425                  * permission to the VF to add or delete unicast MAC addresses.
1426                  * The VF may request to set the MAC address filter already
1427                  * assigned to it so do not return an error in that case.
1428                  */
1429                 dev_err(&pf->pdev->dev,
1430                         "VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n");
1431                 ret = -EPERM;
1432         }
1433         return ret;
1434 }
1435
1436 /**
1437  * i40e_vc_add_mac_addr_msg
1438  * @vf: pointer to the vf info
1439  * @msg: pointer to the msg buffer
1440  * @msglen: msg length
1441  *
1442  * add guest mac address filter
1443  **/
1444 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1445 {
1446         struct i40e_virtchnl_ether_addr_list *al =
1447             (struct i40e_virtchnl_ether_addr_list *)msg;
1448         struct i40e_pf *pf = vf->pf;
1449         struct i40e_vsi *vsi = NULL;
1450         u16 vsi_id = al->vsi_id;
1451         i40e_status ret = 0;
1452         int i;
1453
1454         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1455             !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1456             !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1457                 ret = I40E_ERR_PARAM;
1458                 goto error_param;
1459         }
1460
1461         for (i = 0; i < al->num_elements; i++) {
1462                 ret = i40e_check_vf_permission(vf, al->list[i].addr);
1463                 if (ret)
1464                         goto error_param;
1465         }
1466         vsi = pf->vsi[vsi_id];
1467
1468         /* add new addresses to the list */
1469         for (i = 0; i < al->num_elements; i++) {
1470                 struct i40e_mac_filter *f;
1471
1472                 f = i40e_find_mac(vsi, al->list[i].addr, true, false);
1473                 if (!f) {
1474                         if (i40e_is_vsi_in_vlan(vsi))
1475                                 f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
1476                                                          true, false);
1477                         else
1478                                 f = i40e_add_filter(vsi, al->list[i].addr, -1,
1479                                                     true, false);
1480                 }
1481
1482                 if (!f) {
1483                         dev_err(&pf->pdev->dev,
1484                                 "Unable to add VF MAC filter\n");
1485                         ret = I40E_ERR_PARAM;
1486                         goto error_param;
1487                 }
1488         }
1489
1490         /* program the updated filter list */
1491         if (i40e_sync_vsi_filters(vsi))
1492                 dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");
1493
1494 error_param:
1495         /* send the response to the vf */
1496         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
1497                                        ret);
1498 }
1499
1500 /**
1501  * i40e_vc_del_mac_addr_msg
1502  * @vf: pointer to the vf info
1503  * @msg: pointer to the msg buffer
1504  * @msglen: msg length
1505  *
1506  * remove guest mac address filter
1507  **/
1508 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1509 {
1510         struct i40e_virtchnl_ether_addr_list *al =
1511             (struct i40e_virtchnl_ether_addr_list *)msg;
1512         struct i40e_pf *pf = vf->pf;
1513         struct i40e_vsi *vsi = NULL;
1514         u16 vsi_id = al->vsi_id;
1515         i40e_status ret = 0;
1516         int i;
1517
1518         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1519             !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1520             !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1521                 ret = I40E_ERR_PARAM;
1522                 goto error_param;
1523         }
1524
1525         for (i = 0; i < al->num_elements; i++) {
1526                 if (is_broadcast_ether_addr(al->list[i].addr) ||
1527                     is_zero_ether_addr(al->list[i].addr)) {
1528                         dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
1529                                 al->list[i].addr);
1530                         ret = I40E_ERR_INVALID_MAC_ADDR;
1531                         goto error_param;
1532                 }
1533         }
1534         vsi = pf->vsi[vsi_id];
1535
1536         /* delete addresses from the list */
1537         for (i = 0; i < al->num_elements; i++)
1538                 i40e_del_filter(vsi, al->list[i].addr,
1539                                 I40E_VLAN_ANY, true, false);
1540
1541         /* program the updated filter list */
1542         if (i40e_sync_vsi_filters(vsi))
1543                 dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");
1544
1545 error_param:
1546         /* send the response to the vf */
1547         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
1548                                        ret);
1549 }
1550
1551 /**
1552  * i40e_vc_add_vlan_msg
1553  * @vf: pointer to the vf info
1554  * @msg: pointer to the msg buffer
1555  * @msglen: msg length
1556  *
1557  * program guest vlan id
1558  **/
1559 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1560 {
1561         struct i40e_virtchnl_vlan_filter_list *vfl =
1562             (struct i40e_virtchnl_vlan_filter_list *)msg;
1563         struct i40e_pf *pf = vf->pf;
1564         struct i40e_vsi *vsi = NULL;
1565         u16 vsi_id = vfl->vsi_id;
1566         i40e_status aq_ret = 0;
1567         int i;
1568
1569         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1570             !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1571             !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1572                 aq_ret = I40E_ERR_PARAM;
1573                 goto error_param;
1574         }
1575
1576         for (i = 0; i < vfl->num_elements; i++) {
1577                 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
1578                         aq_ret = I40E_ERR_PARAM;
1579                         dev_err(&pf->pdev->dev,
1580                                 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
1581                         goto error_param;
1582                 }
1583         }
1584         vsi = pf->vsi[vsi_id];
1585         if (vsi->info.pvid) {
1586                 aq_ret = I40E_ERR_PARAM;
1587                 goto error_param;
1588         }
1589
1590         i40e_vlan_stripping_enable(vsi);
1591         for (i = 0; i < vfl->num_elements; i++) {
1592                 /* add new VLAN filter */
1593                 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
1594                 if (ret)
1595                         dev_err(&pf->pdev->dev,
1596                                 "Unable to add VF vlan filter %d, error %d\n",
1597                                 vfl->vlan_id[i], ret);
1598         }
1599
1600 error_param:
1601         /* send the response to the vf */
1602         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
1603 }
1604
1605 /**
1606  * i40e_vc_remove_vlan_msg
1607  * @vf: pointer to the vf info
1608  * @msg: pointer to the msg buffer
1609  * @msglen: msg length
1610  *
1611  * remove programmed guest vlan id
1612  **/
1613 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1614 {
1615         struct i40e_virtchnl_vlan_filter_list *vfl =
1616             (struct i40e_virtchnl_vlan_filter_list *)msg;
1617         struct i40e_pf *pf = vf->pf;
1618         struct i40e_vsi *vsi = NULL;
1619         u16 vsi_id = vfl->vsi_id;
1620         i40e_status aq_ret = 0;
1621         int i;
1622
1623         if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1624             !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1625             !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1626                 aq_ret = I40E_ERR_PARAM;
1627                 goto error_param;
1628         }
1629
1630         for (i = 0; i < vfl->num_elements; i++) {
1631                 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
1632                         aq_ret = I40E_ERR_PARAM;
1633                         goto error_param;
1634                 }
1635         }
1636
1637         vsi = pf->vsi[vsi_id];
1638         if (vsi->info.pvid) {
1639                 aq_ret = I40E_ERR_PARAM;
1640                 goto error_param;
1641         }
1642
1643         for (i = 0; i < vfl->num_elements; i++) {
1644                 int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
1645                 if (ret)
1646                         dev_err(&pf->pdev->dev,
1647                                 "Unable to delete VF vlan filter %d, error %d\n",
1648                                 vfl->vlan_id[i], ret);
1649         }
1650
1651 error_param:
1652         /* send the response to the vf */
1653         return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
1654 }
1655
1656 /**
1657  * i40e_vc_validate_vf_msg
1658  * @vf: pointer to the vf info
1659  * @msg: pointer to the msg buffer
1660  * @msglen: msg length
1661  * @msghndl: msg handle
1662  *
1663  * validate msg
1664  **/
1665 static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
1666                                    u32 v_retval, u8 *msg, u16 msglen)
1667 {
1668         bool err_msg_format = false;
1669         int valid_len;
1670
1671         /* Check if VF is disabled. */
1672         if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
1673                 return I40E_ERR_PARAM;
1674
1675         /* Validate message length. */
1676         switch (v_opcode) {
1677         case I40E_VIRTCHNL_OP_VERSION:
1678                 valid_len = sizeof(struct i40e_virtchnl_version_info);
1679                 break;
1680         case I40E_VIRTCHNL_OP_RESET_VF:
1681         case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
1682                 valid_len = 0;
1683                 break;
1684         case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
1685                 valid_len = sizeof(struct i40e_virtchnl_txq_info);
1686                 break;
1687         case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
1688                 valid_len = sizeof(struct i40e_virtchnl_rxq_info);
1689                 break;
1690         case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
1691                 valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
1692                 if (msglen >= valid_len) {
1693                         struct i40e_virtchnl_vsi_queue_config_info *vqc =
1694                             (struct i40e_virtchnl_vsi_queue_config_info *)msg;
1695                         valid_len += (vqc->num_queue_pairs *
1696                                       sizeof(struct
1697                                              i40e_virtchnl_queue_pair_info));
1698                         if (vqc->num_queue_pairs == 0)
1699                                 err_msg_format = true;
1700                 }
1701                 break;
1702         case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
1703                 valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
1704                 if (msglen >= valid_len) {
1705                         struct i40e_virtchnl_irq_map_info *vimi =
1706                             (struct i40e_virtchnl_irq_map_info *)msg;
1707                         valid_len += (vimi->num_vectors *
1708                                       sizeof(struct i40e_virtchnl_vector_map));
1709                         if (vimi->num_vectors == 0)
1710                                 err_msg_format = true;
1711                 }
1712                 break;
1713         case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
1714         case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
1715                 valid_len = sizeof(struct i40e_virtchnl_queue_select);
1716                 break;
1717         case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
1718         case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
1719                 valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
1720                 if (msglen >= valid_len) {
1721                         struct i40e_virtchnl_ether_addr_list *veal =
1722                             (struct i40e_virtchnl_ether_addr_list *)msg;
1723                         valid_len += veal->num_elements *
1724                             sizeof(struct i40e_virtchnl_ether_addr);
1725                         if (veal->num_elements == 0)
1726                                 err_msg_format = true;
1727                 }
1728                 break;
1729         case I40E_VIRTCHNL_OP_ADD_VLAN:
1730         case I40E_VIRTCHNL_OP_DEL_VLAN:
1731                 valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
1732                 if (msglen >= valid_len) {
1733                         struct i40e_virtchnl_vlan_filter_list *vfl =
1734                             (struct i40e_virtchnl_vlan_filter_list *)msg;
1735                         valid_len += vfl->num_elements * sizeof(u16);
1736                         if (vfl->num_elements == 0)
1737                                 err_msg_format = true;
1738                 }
1739                 break;
1740         case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
1741                 valid_len = sizeof(struct i40e_virtchnl_promisc_info);
1742                 break;
1743         case I40E_VIRTCHNL_OP_GET_STATS:
1744                 valid_len = sizeof(struct i40e_virtchnl_queue_select);
1745                 break;
1746         /* These are always errors coming from the VF. */
1747         case I40E_VIRTCHNL_OP_EVENT:
1748         case I40E_VIRTCHNL_OP_UNKNOWN:
1749         default:
1750                 return -EPERM;
1751                 break;
1752         }
1753         /* few more checks */
1754         if ((valid_len != msglen) || (err_msg_format)) {
1755                 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
1756                 return -EINVAL;
1757         } else {
1758                 return 0;
1759         }
1760 }
1761
1762 /**
1763  * i40e_vc_process_vf_msg
1764  * @pf: pointer to the pf structure
1765  * @vf_id: source vf id
1766  * @msg: pointer to the msg buffer
1767  * @msglen: msg length
1768  * @msghndl: msg handle
1769  *
1770  * called from the common aeq/arq handler to
1771  * process request from vf
1772  **/
1773 int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode,
1774                            u32 v_retval, u8 *msg, u16 msglen)
1775 {
1776         struct i40e_hw *hw = &pf->hw;
1777         unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
1778         struct i40e_vf *vf;
1779         int ret;
1780
1781         pf->vf_aq_requests++;
1782         if (local_vf_id >= pf->num_alloc_vfs)
1783                 return -EINVAL;
1784         vf = &(pf->vf[local_vf_id]);
1785         /* perform basic checks on the msg */
1786         ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);
1787
1788         if (ret) {
1789                 dev_err(&pf->pdev->dev, "Invalid message from vf %d, opcode %d, len %d\n",
1790                         local_vf_id, v_opcode, msglen);
1791                 return ret;
1792         }
1793
1794         switch (v_opcode) {
1795         case I40E_VIRTCHNL_OP_VERSION:
1796                 ret = i40e_vc_get_version_msg(vf);
1797                 break;
1798         case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
1799                 ret = i40e_vc_get_vf_resources_msg(vf);
1800                 break;
1801         case I40E_VIRTCHNL_OP_RESET_VF:
1802                 i40e_vc_reset_vf_msg(vf);
1803                 ret = 0;
1804                 break;
1805         case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
1806                 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
1807                 break;
1808         case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
1809                 ret = i40e_vc_config_queues_msg(vf, msg, msglen);
1810                 break;
1811         case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
1812                 ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
1813                 break;
1814         case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
1815                 ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
1816                 break;
1817         case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
1818                 ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
1819                 break;
1820         case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
1821                 ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
1822                 break;
1823         case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
1824                 ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
1825                 break;
1826         case I40E_VIRTCHNL_OP_ADD_VLAN:
1827                 ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
1828                 break;
1829         case I40E_VIRTCHNL_OP_DEL_VLAN:
1830                 ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
1831                 break;
1832         case I40E_VIRTCHNL_OP_GET_STATS:
1833                 ret = i40e_vc_get_stats_msg(vf, msg, msglen);
1834                 break;
1835         case I40E_VIRTCHNL_OP_UNKNOWN:
1836         default:
1837                 dev_err(&pf->pdev->dev, "Unsupported opcode %d from vf %d\n",
1838                         v_opcode, local_vf_id);
1839                 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
1840                                               I40E_ERR_NOT_IMPLEMENTED);
1841                 break;
1842         }
1843
1844         return ret;
1845 }
1846
1847 /**
1848  * i40e_vc_process_vflr_event
1849  * @pf: pointer to the pf structure
1850  *
1851  * called from the vlfr irq handler to
1852  * free up vf resources and state variables
1853  **/
1854 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
1855 {
1856         u32 reg, reg_idx, bit_idx, vf_id;
1857         struct i40e_hw *hw = &pf->hw;
1858         struct i40e_vf *vf;
1859
1860         if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
1861                 return 0;
1862
1863         clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
1864         for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
1865                 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1866                 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1867                 /* read GLGEN_VFLRSTAT register to find out the flr vfs */
1868                 vf = &pf->vf[vf_id];
1869                 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
1870                 if (reg & (1 << bit_idx)) {
1871                         /* clear the bit in GLGEN_VFLRSTAT */
1872                         wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
1873
1874                         if (!test_bit(__I40E_DOWN, &pf->state))
1875                                 i40e_reset_vf(vf, true);
1876                 }
1877         }
1878
1879         /* re-enable vflr interrupt cause */
1880         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
1881         reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
1882         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
1883         i40e_flush(hw);
1884
1885         return 0;
1886 }
1887
1888 /**
1889  * i40e_vc_vf_broadcast
1890  * @pf: pointer to the pf structure
1891  * @opcode: operation code
1892  * @retval: return value
1893  * @msg: pointer to the msg buffer
1894  * @msglen: msg length
1895  *
1896  * send a message to all VFs on a given PF
1897  **/
1898 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
1899                                  enum i40e_virtchnl_ops v_opcode,
1900                                  i40e_status v_retval, u8 *msg,
1901                                  u16 msglen)
1902 {
1903         struct i40e_hw *hw = &pf->hw;
1904         struct i40e_vf *vf = pf->vf;
1905         int i;
1906
1907         for (i = 0; i < pf->num_alloc_vfs; i++) {
1908                 /* Ignore return value on purpose - a given VF may fail, but
1909                  * we need to keep going and send to all of them
1910                  */
1911                 i40e_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval,
1912                                        msg, msglen, NULL);
1913                 vf++;
1914         }
1915 }
1916
1917 /**
1918  * i40e_vc_notify_link_state
1919  * @pf: pointer to the pf structure
1920  *
1921  * send a link status message to all VFs on a given PF
1922  **/
1923 void i40e_vc_notify_link_state(struct i40e_pf *pf)
1924 {
1925         struct i40e_virtchnl_pf_event pfe;
1926         struct i40e_hw *hw = &pf->hw;
1927         struct i40e_vf *vf = pf->vf;
1928         struct i40e_link_status *ls = &pf->hw.phy.link_info;
1929         int i;
1930
1931         pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
1932         pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
1933         for (i = 0; i < pf->num_alloc_vfs; i++) {
1934                 if (vf->link_forced) {
1935                         pfe.event_data.link_event.link_status = vf->link_up;
1936                         pfe.event_data.link_event.link_speed =
1937                                 (vf->link_up ? I40E_LINK_SPEED_40GB : 0);
1938                 } else {
1939                         pfe.event_data.link_event.link_status =
1940                                 ls->link_info & I40E_AQ_LINK_UP;
1941                         pfe.event_data.link_event.link_speed = ls->link_speed;
1942                 }
1943                 i40e_aq_send_msg_to_vf(hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
1944                                        0, (u8 *)&pfe, sizeof(pfe),
1945                                        NULL);
1946                 vf++;
1947         }
1948 }
1949
1950 /**
1951  * i40e_vc_notify_reset
1952  * @pf: pointer to the pf structure
1953  *
1954  * indicate a pending reset to all VFs on a given PF
1955  **/
1956 void i40e_vc_notify_reset(struct i40e_pf *pf)
1957 {
1958         struct i40e_virtchnl_pf_event pfe;
1959
1960         pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
1961         pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
1962         i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS,
1963                              (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
1964 }
1965
1966 /**
1967  * i40e_vc_notify_vf_reset
1968  * @vf: pointer to the vf structure
1969  *
1970  * indicate a pending reset to the given VF
1971  **/
1972 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
1973 {
1974         struct i40e_virtchnl_pf_event pfe;
1975
1976         pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
1977         pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
1978         i40e_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
1979                                I40E_SUCCESS, (u8 *)&pfe,
1980                                sizeof(struct i40e_virtchnl_pf_event), NULL);
1981 }
1982
1983 /**
1984  * i40e_ndo_set_vf_mac
1985  * @netdev: network interface device structure
1986  * @vf_id: vf identifier
1987  * @mac: mac address
1988  *
1989  * program vf mac address
1990  **/
1991 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
1992 {
1993         struct i40e_netdev_priv *np = netdev_priv(netdev);
1994         struct i40e_vsi *vsi = np->vsi;
1995         struct i40e_pf *pf = vsi->back;
1996         struct i40e_mac_filter *f;
1997         struct i40e_vf *vf;
1998         int ret = 0;
1999
2000         /* validate the request */
2001         if (vf_id >= pf->num_alloc_vfs) {
2002                 dev_err(&pf->pdev->dev,
2003                         "Invalid VF Identifier %d\n", vf_id);
2004                 ret = -EINVAL;
2005                 goto error_param;
2006         }
2007
2008         vf = &(pf->vf[vf_id]);
2009         vsi = pf->vsi[vf->lan_vsi_index];
2010         if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2011                 dev_err(&pf->pdev->dev,
2012                         "Uninitialized VF %d\n", vf_id);
2013                 ret = -EINVAL;
2014                 goto error_param;
2015         }
2016
2017         if (!is_valid_ether_addr(mac)) {
2018                 dev_err(&pf->pdev->dev,
2019                         "Invalid VF ethernet address\n");
2020                 ret = -EINVAL;
2021                 goto error_param;
2022         }
2023
2024         /* delete the temporary mac address */
2025         i40e_del_filter(vsi, vf->default_lan_addr.addr, 0, true, false);
2026
2027         /* add the new mac address */
2028         f = i40e_add_filter(vsi, mac, 0, true, false);
2029         if (!f) {
2030                 dev_err(&pf->pdev->dev,
2031                         "Unable to add VF ucast filter\n");
2032                 ret = -ENOMEM;
2033                 goto error_param;
2034         }
2035
2036         dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
2037         /* program mac filter */
2038         if (i40e_sync_vsi_filters(vsi)) {
2039                 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
2040                 ret = -EIO;
2041                 goto error_param;
2042         }
2043         memcpy(vf->default_lan_addr.addr, mac, ETH_ALEN);
2044         vf->pf_set_mac = true;
2045         dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
2046         ret = 0;
2047
2048 error_param:
2049         return ret;
2050 }
2051
2052 /**
2053  * i40e_ndo_set_vf_port_vlan
2054  * @netdev: network interface device structure
2055  * @vf_id: vf identifier
2056  * @vlan_id: mac address
2057  * @qos: priority setting
2058  *
2059  * program vf vlan id and/or qos
2060  **/
2061 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
2062                               int vf_id, u16 vlan_id, u8 qos)
2063 {
2064         struct i40e_netdev_priv *np = netdev_priv(netdev);
2065         struct i40e_pf *pf = np->vsi->back;
2066         struct i40e_vsi *vsi;
2067         struct i40e_vf *vf;
2068         int ret = 0;
2069
2070         /* validate the request */
2071         if (vf_id >= pf->num_alloc_vfs) {
2072                 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2073                 ret = -EINVAL;
2074                 goto error_pvid;
2075         }
2076
2077         if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
2078                 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
2079                 ret = -EINVAL;
2080                 goto error_pvid;
2081         }
2082
2083         vf = &(pf->vf[vf_id]);
2084         vsi = pf->vsi[vf->lan_vsi_index];
2085         if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2086                 dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
2087                 ret = -EINVAL;
2088                 goto error_pvid;
2089         }
2090
2091         if (vsi->info.pvid == 0 && i40e_is_vsi_in_vlan(vsi))
2092                 dev_err(&pf->pdev->dev,
2093                         "VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
2094                         vf_id);
2095
2096         /* Check for condition where there was already a port VLAN ID
2097          * filter set and now it is being deleted by setting it to zero.
2098          * Before deleting all the old VLAN filters we must add new ones
2099          * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
2100          * MAC addresses deleted.
2101          */
2102         if (!(vlan_id || qos) && vsi->info.pvid)
2103                 ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY);
2104
2105         if (vsi->info.pvid) {
2106                 /* kill old VLAN */
2107                 ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
2108                                                VLAN_VID_MASK));
2109                 if (ret) {
2110                         dev_info(&vsi->back->pdev->dev,
2111                                  "remove VLAN failed, ret=%d, aq_err=%d\n",
2112                                  ret, pf->hw.aq.asq_last_status);
2113                 }
2114         }
2115         if (vlan_id || qos)
2116                 ret = i40e_vsi_add_pvid(vsi,
2117                                 vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT));
2118         else
2119                 i40e_vsi_remove_pvid(vsi);
2120
2121         if (vlan_id) {
2122                 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
2123                          vlan_id, qos, vf_id);
2124
2125                 /* add new VLAN filter */
2126                 ret = i40e_vsi_add_vlan(vsi, vlan_id);
2127                 if (ret) {
2128                         dev_info(&vsi->back->pdev->dev,
2129                                  "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
2130                                  vsi->back->hw.aq.asq_last_status);
2131                         goto error_pvid;
2132                 }
2133                 /* Kill non-vlan MAC filters - ignore error return since
2134                  * there might not be any non-vlan MAC filters.
2135                  */
2136                 i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY);
2137         }
2138
2139         if (ret) {
2140                 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
2141                 goto error_pvid;
2142         }
2143         /* The Port VLAN needs to be saved across resets the same as the
2144          * default LAN MAC address.
2145          */
2146         vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
2147         ret = 0;
2148
2149 error_pvid:
2150         return ret;
2151 }
2152
2153 /**
2154  * i40e_ndo_set_vf_bw
2155  * @netdev: network interface device structure
2156  * @vf_id: vf identifier
2157  * @tx_rate: tx rate
2158  *
2159  * configure vf tx rate
2160  **/
2161 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int tx_rate)
2162 {
2163         return -EOPNOTSUPP;
2164 }
2165
2166 /**
2167  * i40e_ndo_get_vf_config
2168  * @netdev: network interface device structure
2169  * @vf_id: vf identifier
2170  * @ivi: vf configuration structure
2171  *
2172  * return vf configuration
2173  **/
2174 int i40e_ndo_get_vf_config(struct net_device *netdev,
2175                            int vf_id, struct ifla_vf_info *ivi)
2176 {
2177         struct i40e_netdev_priv *np = netdev_priv(netdev);
2178         struct i40e_vsi *vsi = np->vsi;
2179         struct i40e_pf *pf = vsi->back;
2180         struct i40e_vf *vf;
2181         int ret = 0;
2182
2183         /* validate the request */
2184         if (vf_id >= pf->num_alloc_vfs) {
2185                 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2186                 ret = -EINVAL;
2187                 goto error_param;
2188         }
2189
2190         vf = &(pf->vf[vf_id]);
2191         /* first vsi is always the LAN vsi */
2192         vsi = pf->vsi[vf->lan_vsi_index];
2193         if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2194                 dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
2195                 ret = -EINVAL;
2196                 goto error_param;
2197         }
2198
2199         ivi->vf = vf_id;
2200
2201         memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN);
2202
2203         ivi->tx_rate = 0;
2204         ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
2205         ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
2206                    I40E_VLAN_PRIORITY_SHIFT;
2207         ret = 0;
2208
2209 error_param:
2210         return ret;
2211 }
2212
2213 /**
2214  * i40e_ndo_set_vf_link_state
2215  * @netdev: network interface device structure
2216  * @vf_id: vf identifier
2217  * @link: required link state
2218  *
2219  * Set the link state of a specified VF, regardless of physical link state
2220  **/
2221 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
2222 {
2223         struct i40e_netdev_priv *np = netdev_priv(netdev);
2224         struct i40e_pf *pf = np->vsi->back;
2225         struct i40e_virtchnl_pf_event pfe;
2226         struct i40e_hw *hw = &pf->hw;
2227         struct i40e_vf *vf;
2228         int ret = 0;
2229
2230         /* validate the request */
2231         if (vf_id >= pf->num_alloc_vfs) {
2232                 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2233                 ret = -EINVAL;
2234                 goto error_out;
2235         }
2236
2237         vf = &pf->vf[vf_id];
2238
2239         pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
2240         pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
2241
2242         switch (link) {
2243         case IFLA_VF_LINK_STATE_AUTO:
2244                 vf->link_forced = false;
2245                 pfe.event_data.link_event.link_status =
2246                         pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
2247                 pfe.event_data.link_event.link_speed =
2248                         pf->hw.phy.link_info.link_speed;
2249                 break;
2250         case IFLA_VF_LINK_STATE_ENABLE:
2251                 vf->link_forced = true;
2252                 vf->link_up = true;
2253                 pfe.event_data.link_event.link_status = true;
2254                 pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
2255                 break;
2256         case IFLA_VF_LINK_STATE_DISABLE:
2257                 vf->link_forced = true;
2258                 vf->link_up = false;
2259                 pfe.event_data.link_event.link_status = false;
2260                 pfe.event_data.link_event.link_speed = 0;
2261                 break;
2262         default:
2263                 ret = -EINVAL;
2264                 goto error_out;
2265         }
2266         /* Notify the VF of its new link state */
2267         i40e_aq_send_msg_to_vf(hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
2268                                0, (u8 *)&pfe, sizeof(pfe), NULL);
2269
2270 error_out:
2271         return ret;
2272 }