drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 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 with
  16  * this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * The full GNU General Public License is included in this distribution in
  20  * the file called "COPYING".
  21  *
  22  * Contact Information:
  23  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25  *
  26  ******************************************************************************/
  27
  28 /* Local includes */
  29 #include "i40e.h"
  30
  31 const char i40e_driver_name[] = "i40e";
  32 static const char i40e_driver_string[] =
  33                         "Intel(R) Ethernet Connection XL710 Network Driver";
  34
  35 #define DRV_KERN "-k"
  36
  37 #define DRV_VERSION_MAJOR 0
  38 #define DRV_VERSION_MINOR 3
  39 #define DRV_VERSION_BUILD 11
  40 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  41              __stringify(DRV_VERSION_MINOR) "." \
  42              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  43 const char i40e_driver_version_str[] = DRV_VERSION;
  44 static const char i40e_copyright[] = "Copyright (c) 2013 Intel Corporation.";
  45
  46 /* a bit of forward declarations */
  47 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  48 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  49 static int i40e_add_vsi(struct i40e_vsi *vsi);
  50 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  51 static int i40e_setup_pf_switch(struct i40e_pf *pf);
  52 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  53 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  54 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  55
  56 /* i40e_pci_tbl - PCI Device ID Table
  57  *
  58  * Last entry must be all 0s
  59  *
  60  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  61  *   Class, Class Mask, private data (not used) }
  62  */
  63 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  64         {PCI_VDEVICE(INTEL, I40E_SFP_XL710_DEVICE_ID), 0},
  65         {PCI_VDEVICE(INTEL, I40E_SFP_X710_DEVICE_ID), 0},
  66         {PCI_VDEVICE(INTEL, I40E_QEMU_DEVICE_ID), 0},
  67         {PCI_VDEVICE(INTEL, I40E_KX_A_DEVICE_ID), 0},
  68         {PCI_VDEVICE(INTEL, I40E_KX_B_DEVICE_ID), 0},
  69         {PCI_VDEVICE(INTEL, I40E_KX_C_DEVICE_ID), 0},
  70         {PCI_VDEVICE(INTEL, I40E_KX_D_DEVICE_ID), 0},
  71         {PCI_VDEVICE(INTEL, I40E_QSFP_A_DEVICE_ID), 0},
  72         {PCI_VDEVICE(INTEL, I40E_QSFP_B_DEVICE_ID), 0},
  73         {PCI_VDEVICE(INTEL, I40E_QSFP_C_DEVICE_ID), 0},
  74         /* required last entry */
  75         {0, }
  76 };
  77 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  78
  79 #define I40E_MAX_VF_COUNT 128
  80 static int debug = -1;
  81 module_param(debug, int, 0);
  82 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  83
  84 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  85 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  86 MODULE_LICENSE("GPL");
  87 MODULE_VERSION(DRV_VERSION);
  88
  89 /**
  90  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  91  * @hw:   pointer to the HW structure
  92  * @mem:  ptr to mem struct to fill out
  93  * @size: size of memory requested
  94  * @alignment: what to align the allocation to
  95  **/
  96 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
  97                             u64 size, u32 alignment)
  98 {
  99         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 100
 101         mem->size = ALIGN(size, alignment);
 102         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 103                                       &mem->pa, GFP_KERNEL);
 104         if (!mem->va)
 105                 return -ENOMEM;
 106
 107         return 0;
 108 }
 109
 110 /**
 111  * i40e_free_dma_mem_d - OS specific memory free for shared code
 112  * @hw:   pointer to the HW structure
 113  * @mem:  ptr to mem struct to free
 114  **/
 115 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 116 {
 117         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 118
 119         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 120         mem->va = NULL;
 121         mem->pa = 0;
 122         mem->size = 0;
 123
 124         return 0;
 125 }
 126
 127 /**
 128  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 129  * @hw:   pointer to the HW structure
 130  * @mem:  ptr to mem struct to fill out
 131  * @size: size of memory requested
 132  **/
 133 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 134                              u32 size)
 135 {
 136         mem->size = size;
 137         mem->va = kzalloc(size, GFP_KERNEL);
 138
 139         if (!mem->va)
 140                 return -ENOMEM;
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * i40e_free_virt_mem_d - OS specific memory free for shared code
 147  * @hw:   pointer to the HW structure
 148  * @mem:  ptr to mem struct to free
 149  **/
 150 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 151 {
 152         /* it's ok to kfree a NULL pointer */
 153         kfree(mem->va);
 154         mem->va = NULL;
 155         mem->size = 0;
 156
 157         return 0;
 158 }
 159
 160 /**
 161  * i40e_get_lump - find a lump of free generic resource
 162  * @pf: board private structure
 163  * @pile: the pile of resource to search
 164  * @needed: the number of items needed
 165  * @id: an owner id to stick on the items assigned
 166  *
 167  * Returns the base item index of the lump, or negative for error
 168  *
 169  * The search_hint trick and lack of advanced fit-finding only work
 170  * because we're highly likely to have all the same size lump requests.
 171  * Linear search time and any fragmentation should be minimal.
 172  **/
 173 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 174                          u16 needed, u16 id)
 175 {
 176         int ret = -ENOMEM;
 177         int i, j;
 178
 179         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 180                 dev_info(&pf->pdev->dev,
 181                          "param err: pile=%p needed=%d id=0x%04x\n",
 182                          pile, needed, id);
 183                 return -EINVAL;
 184         }
 185
 186         /* start the linear search with an imperfect hint */
 187         i = pile->search_hint;
 188         while (i < pile->num_entries) {
 189                 /* skip already allocated entries */
 190                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 191                         i++;
 192                         continue;
 193                 }
 194
 195                 /* do we have enough in this lump? */
 196                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 197                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 198                                 break;
 199                 }
 200
 201                 if (j == needed) {
 202                         /* there was enough, so assign it to the requestor */
 203                         for (j = 0; j < needed; j++)
 204                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 205                         ret = i;
 206                         pile->search_hint = i + j;
 207                         break;
 208                 } else {
 209                         /* not enough, so skip over it and continue looking */
 210                         i += j;
 211                 }
 212         }
 213
 214         return ret;
 215 }
 216
 217 /**
 218  * i40e_put_lump - return a lump of generic resource
 219  * @pile: the pile of resource to search
 220  * @index: the base item index
 221  * @id: the owner id of the items assigned
 222  *
 223  * Returns the count of items in the lump
 224  **/
 225 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 226 {
 227         int valid_id = (id | I40E_PILE_VALID_BIT);
 228         int count = 0;
 229         int i;
 230
 231         if (!pile || index >= pile->num_entries)
 232                 return -EINVAL;
 233
 234         for (i = index;
 235              i < pile->num_entries && pile->list[i] == valid_id;
 236              i++) {
 237                 pile->list[i] = 0;
 238                 count++;
 239         }
 240
 241         if (count && index < pile->search_hint)
 242                 pile->search_hint = index;
 243
 244         return count;
 245 }
 246
 247 /**
 248  * i40e_service_event_schedule - Schedule the service task to wake up
 249  * @pf: board private structure
 250  *
 251  * If not already scheduled, this puts the task into the work queue
 252  **/
 253 static void i40e_service_event_schedule(struct i40e_pf *pf)
 254 {
 255         if (!test_bit(__I40E_DOWN, &pf->state) &&
 256             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 257             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 258                 schedule_work(&pf->service_task);
 259 }
 260
 261 /**
 262  * i40e_tx_timeout - Respond to a Tx Hang
 263  * @netdev: network interface device structure
 264  *
 265  * If any port has noticed a Tx timeout, it is likely that the whole
 266  * device is munged, not just the one netdev port, so go for the full
 267  * reset.
 268  **/
 269 static void i40e_tx_timeout(struct net_device *netdev)
 270 {
 271         struct i40e_netdev_priv *np = netdev_priv(netdev);
 272         struct i40e_vsi *vsi = np->vsi;
 273         struct i40e_pf *pf = vsi->back;
 274
 275         pf->tx_timeout_count++;
 276
 277         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 278                 pf->tx_timeout_recovery_level = 0;
 279         pf->tx_timeout_last_recovery = jiffies;
 280         netdev_info(netdev, "tx_timeout recovery level %d\n",
 281                     pf->tx_timeout_recovery_level);
 282
 283         switch (pf->tx_timeout_recovery_level) {
 284         case 0:
 285                 /* disable and re-enable queues for the VSI */
 286                 if (in_interrupt()) {
 287                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 288                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 289                 } else {
 290                         i40e_vsi_reinit_locked(vsi);
 291                 }
 292                 break;
 293         case 1:
 294                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 295                 break;
 296         case 2:
 297                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 298                 break;
 299         case 3:
 300                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 301                 break;
 302         default:
 303                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 304                 i40e_down(vsi);
 305                 break;
 306         }
 307         i40e_service_event_schedule(pf);
 308         pf->tx_timeout_recovery_level++;
 309 }
 310
 311 /**
 312  * i40e_release_rx_desc - Store the new tail and head values
 313  * @rx_ring: ring to bump
 314  * @val: new head index
 315  **/
 316 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 317 {
 318         rx_ring->next_to_use = val;
 319
 320         /* Force memory writes to complete before letting h/w
 321          * know there are new descriptors to fetch.  (Only
 322          * applicable for weak-ordered memory model archs,
 323          * such as IA-64).
 324          */
 325         wmb();
 326         writel(val, rx_ring->tail);
 327 }
 328
 329 /**
 330  * i40e_get_vsi_stats_struct - Get System Network Statistics
 331  * @vsi: the VSI we care about
 332  *
 333  * Returns the address of the device statistics structure.
 334  * The statistics are actually updated from the service task.
 335  **/
 336 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 337 {
 338         return &vsi->net_stats;
 339 }
 340
 341 /**
 342  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 343  * @netdev: network interface device structure
 344  *
 345  * Returns the address of the device statistics structure.
 346  * The statistics are actually updated from the service task.
 347  **/
 348 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 349                                              struct net_device *netdev,
 350                                              struct rtnl_link_stats64 *stats)
 351 {
 352         struct i40e_netdev_priv *np = netdev_priv(netdev);
 353         struct i40e_vsi *vsi = np->vsi;
 354         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 355         int i;
 356
 357         rcu_read_lock();
 358         for (i = 0; i < vsi->num_queue_pairs; i++) {
 359                 struct i40e_ring *tx_ring, *rx_ring;
 360                 u64 bytes, packets;
 361                 unsigned int start;
 362
 363                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 364                 if (!tx_ring)
 365                         continue;
 366
 367                 do {
 368                         start = u64_stats_fetch_begin_bh(&tx_ring->syncp);
 369                         packets = tx_ring->stats.packets;
 370                         bytes   = tx_ring->stats.bytes;
 371                 } while (u64_stats_fetch_retry_bh(&tx_ring->syncp, start));
 372
 373                 stats->tx_packets += packets;
 374                 stats->tx_bytes   += bytes;
 375                 rx_ring = &tx_ring[1];
 376
 377                 do {
 378                         start = u64_stats_fetch_begin_bh(&rx_ring->syncp);
 379                         packets = rx_ring->stats.packets;
 380                         bytes   = rx_ring->stats.bytes;
 381                 } while (u64_stats_fetch_retry_bh(&rx_ring->syncp, start));
 382
 383                 stats->rx_packets += packets;
 384                 stats->rx_bytes   += bytes;
 385         }
 386         rcu_read_unlock();
 387
 388         /* following stats updated by ixgbe_watchdog_task() */
 389         stats->multicast        = vsi_stats->multicast;
 390         stats->tx_errors        = vsi_stats->tx_errors;
 391         stats->tx_dropped       = vsi_stats->tx_dropped;
 392         stats->rx_errors        = vsi_stats->rx_errors;
 393         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 394         stats->rx_length_errors = vsi_stats->rx_length_errors;
 395
 396         return stats;
 397 }
 398
 399 /**
 400  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 401  * @vsi: the VSI to have its stats reset
 402  **/
 403 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 404 {
 405         struct rtnl_link_stats64 *ns;
 406         int i;
 407
 408         if (!vsi)
 409                 return;
 410
 411         ns = i40e_get_vsi_stats_struct(vsi);
 412         memset(ns, 0, sizeof(*ns));
 413         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 414         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 415         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 416         if (vsi->rx_rings)
 417                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 418                         memset(&vsi->rx_rings[i]->stats, 0 ,
 419                                sizeof(vsi->rx_rings[i]->stats));
 420                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 421                                sizeof(vsi->rx_rings[i]->rx_stats));
 422                         memset(&vsi->tx_rings[i]->stats, 0 ,
 423                                sizeof(vsi->tx_rings[i]->stats));
 424                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 425                                sizeof(vsi->tx_rings[i]->tx_stats));
 426                 }
 427         vsi->stat_offsets_loaded = false;
 428 }
 429
 430 /**
 431  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 432  * @pf: the PF to be reset
 433  **/
 434 void i40e_pf_reset_stats(struct i40e_pf *pf)
 435 {
 436         memset(&pf->stats, 0, sizeof(pf->stats));
 437         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 438         pf->stat_offsets_loaded = false;
 439 }
 440
 441 /**
 442  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 443  * @hw: ptr to the hardware info
 444  * @hireg: the high 32 bit reg to read
 445  * @loreg: the low 32 bit reg to read
 446  * @offset_loaded: has the initial offset been loaded yet
 447  * @offset: ptr to current offset value
 448  * @stat: ptr to the stat
 449  *
 450  * Since the device stats are not reset at PFReset, they likely will not
 451  * be zeroed when the driver starts.  We'll save the first values read
 452  * and use them as offsets to be subtracted from the raw values in order
 453  * to report stats that count from zero.  In the process, we also manage
 454  * the potential roll-over.
 455  **/
 456 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 457                                bool offset_loaded, u64 *offset, u64 *stat)
 458 {
 459         u64 new_data;
 460
 461         if (hw->device_id == I40E_QEMU_DEVICE_ID) {
 462                 new_data = rd32(hw, loreg);
 463                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 464         } else {
 465                 new_data = rd64(hw, loreg);
 466         }
 467         if (!offset_loaded)
 468                 *offset = new_data;
 469         if (likely(new_data >= *offset))
 470                 *stat = new_data - *offset;
 471         else
 472                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 473         *stat &= 0xFFFFFFFFFFFFULL;
 474 }
 475
 476 /**
 477  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 478  * @hw: ptr to the hardware info
 479  * @reg: the hw reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  **/
 484 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 485                                bool offset_loaded, u64 *offset, u64 *stat)
 486 {
 487         u32 new_data;
 488
 489         new_data = rd32(hw, reg);
 490         if (!offset_loaded)
 491                 *offset = new_data;
 492         if (likely(new_data >= *offset))
 493                 *stat = (u32)(new_data - *offset);
 494         else
 495                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 496 }
 497
 498 /**
 499  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 500  * @vsi: the VSI to be updated
 501  **/
 502 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 503 {
 504         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 505         struct i40e_pf *pf = vsi->back;
 506         struct i40e_hw *hw = &pf->hw;
 507         struct i40e_eth_stats *oes;
 508         struct i40e_eth_stats *es;     /* device's eth stats */
 509
 510         es = &vsi->eth_stats;
 511         oes = &vsi->eth_stats_offsets;
 512
 513         /* Gather up the stats that the hw collects */
 514         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 515                            vsi->stat_offsets_loaded,
 516                            &oes->tx_errors, &es->tx_errors);
 517         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 518                            vsi->stat_offsets_loaded,
 519                            &oes->rx_discards, &es->rx_discards);
 520
 521         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 522                            I40E_GLV_GORCL(stat_idx),
 523                            vsi->stat_offsets_loaded,
 524                            &oes->rx_bytes, &es->rx_bytes);
 525         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 526                            I40E_GLV_UPRCL(stat_idx),
 527                            vsi->stat_offsets_loaded,
 528                            &oes->rx_unicast, &es->rx_unicast);
 529         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 530                            I40E_GLV_MPRCL(stat_idx),
 531                            vsi->stat_offsets_loaded,
 532                            &oes->rx_multicast, &es->rx_multicast);
 533         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 534                            I40E_GLV_BPRCL(stat_idx),
 535                            vsi->stat_offsets_loaded,
 536                            &oes->rx_broadcast, &es->rx_broadcast);
 537
 538         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 539                            I40E_GLV_GOTCL(stat_idx),
 540                            vsi->stat_offsets_loaded,
 541                            &oes->tx_bytes, &es->tx_bytes);
 542         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 543                            I40E_GLV_UPTCL(stat_idx),
 544                            vsi->stat_offsets_loaded,
 545                            &oes->tx_unicast, &es->tx_unicast);
 546         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 547                            I40E_GLV_MPTCL(stat_idx),
 548                            vsi->stat_offsets_loaded,
 549                            &oes->tx_multicast, &es->tx_multicast);
 550         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 551                            I40E_GLV_BPTCL(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->tx_broadcast, &es->tx_broadcast);
 554         vsi->stat_offsets_loaded = true;
 555 }
 556
 557 /**
 558  * i40e_update_veb_stats - Update Switch component statistics
 559  * @veb: the VEB being updated
 560  **/
 561 static void i40e_update_veb_stats(struct i40e_veb *veb)
 562 {
 563         struct i40e_pf *pf = veb->pf;
 564         struct i40e_hw *hw = &pf->hw;
 565         struct i40e_eth_stats *oes;
 566         struct i40e_eth_stats *es;     /* device's eth stats */
 567         int idx = 0;
 568
 569         idx = veb->stats_idx;
 570         es = &veb->stats;
 571         oes = &veb->stats_offsets;
 572
 573         /* Gather up the stats that the hw collects */
 574         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 575                            veb->stat_offsets_loaded,
 576                            &oes->tx_discards, &es->tx_discards);
 577         i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 578                            veb->stat_offsets_loaded,
 579                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 580
 581         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 582                            veb->stat_offsets_loaded,
 583                            &oes->rx_bytes, &es->rx_bytes);
 584         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 585                            veb->stat_offsets_loaded,
 586                            &oes->rx_unicast, &es->rx_unicast);
 587         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 588                            veb->stat_offsets_loaded,
 589                            &oes->rx_multicast, &es->rx_multicast);
 590         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 591                            veb->stat_offsets_loaded,
 592                            &oes->rx_broadcast, &es->rx_broadcast);
 593
 594         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 595                            veb->stat_offsets_loaded,
 596                            &oes->tx_bytes, &es->tx_bytes);
 597         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 598                            veb->stat_offsets_loaded,
 599                            &oes->tx_unicast, &es->tx_unicast);
 600         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 601                            veb->stat_offsets_loaded,
 602                            &oes->tx_multicast, &es->tx_multicast);
 603         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 604                            veb->stat_offsets_loaded,
 605                            &oes->tx_broadcast, &es->tx_broadcast);
 606         veb->stat_offsets_loaded = true;
 607 }
 608
 609 /**
 610  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 611  * @pf: the corresponding PF
 612  *
 613  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 614  **/
 615 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 616 {
 617         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 618         struct i40e_hw_port_stats *nsd = &pf->stats;
 619         struct i40e_hw *hw = &pf->hw;
 620         u64 xoff = 0;
 621         u16 i, v;
 622
 623         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 624             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 625                 return;
 626
 627         xoff = nsd->link_xoff_rx;
 628         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 629                            pf->stat_offsets_loaded,
 630                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 631
 632         /* No new LFC xoff rx */
 633         if (!(nsd->link_xoff_rx - xoff))
 634                 return;
 635
 636         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 637         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 638                 struct i40e_vsi *vsi = pf->vsi[v];
 639
 640                 if (!vsi)
 641                         continue;
 642
 643                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 644                         struct i40e_ring *ring = vsi->tx_rings[i];
 645                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 646                 }
 647         }
 648 }
 649
 650 /**
 651  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 652  * @pf: the corresponding PF
 653  *
 654  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 655  **/
 656 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 657 {
 658         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 659         struct i40e_hw_port_stats *nsd = &pf->stats;
 660         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 661         struct i40e_dcbx_config *dcb_cfg;
 662         struct i40e_hw *hw = &pf->hw;
 663         u16 i, v;
 664         u8 tc;
 665
 666         dcb_cfg = &hw->local_dcbx_config;
 667
 668         /* See if DCB enabled with PFC TC */
 669         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 670             !(dcb_cfg->pfc.pfcenable)) {
 671                 i40e_update_link_xoff_rx(pf);
 672                 return;
 673         }
 674
 675         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 676                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 677                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 678                                    pf->stat_offsets_loaded,
 679                                    &osd->priority_xoff_rx[i],
 680                                    &nsd->priority_xoff_rx[i]);
 681
 682                 /* No new PFC xoff rx */
 683                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 684                         continue;
 685                 /* Get the TC for given priority */
 686                 tc = dcb_cfg->etscfg.prioritytable[i];
 687                 xoff[tc] = true;
 688         }
 689
 690         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 691         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 692                 struct i40e_vsi *vsi = pf->vsi[v];
 693
 694                 if (!vsi)
 695                         continue;
 696
 697                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 698                         struct i40e_ring *ring = vsi->tx_rings[i];
 699
 700                         tc = ring->dcb_tc;
 701                         if (xoff[tc])
 702                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 703                                           &ring->state);
 704                 }
 705         }
 706 }
 707
 708 /**
 709  * i40e_update_stats - Update the board statistics counters.
 710  * @vsi: the VSI to be updated
 711  *
 712  * There are a few instances where we store the same stat in a
 713  * couple of different structs.  This is partly because we have
 714  * the netdev stats that need to be filled out, which is slightly
 715  * different from the "eth_stats" defined by the chip and used in
 716  * VF communications.  We sort it all out here in a central place.
 717  **/
 718 void i40e_update_stats(struct i40e_vsi *vsi)
 719 {
 720         struct i40e_pf *pf = vsi->back;
 721         struct i40e_hw *hw = &pf->hw;
 722         struct rtnl_link_stats64 *ons;
 723         struct rtnl_link_stats64 *ns;   /* netdev stats */
 724         struct i40e_eth_stats *oes;
 725         struct i40e_eth_stats *es;     /* device's eth stats */
 726         u32 tx_restart, tx_busy;
 727         u32 rx_page, rx_buf;
 728         u64 rx_p, rx_b;
 729         u64 tx_p, tx_b;
 730         int i;
 731         u16 q;
 732
 733         if (test_bit(__I40E_DOWN, &vsi->state) ||
 734             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 735                 return;
 736
 737         ns = i40e_get_vsi_stats_struct(vsi);
 738         ons = &vsi->net_stats_offsets;
 739         es = &vsi->eth_stats;
 740         oes = &vsi->eth_stats_offsets;
 741
 742         /* Gather up the netdev and vsi stats that the driver collects
 743          * on the fly during packet processing
 744          */
 745         rx_b = rx_p = 0;
 746         tx_b = tx_p = 0;
 747         tx_restart = tx_busy = 0;
 748         rx_page = 0;
 749         rx_buf = 0;
 750         rcu_read_lock();
 751         for (q = 0; q < vsi->num_queue_pairs; q++) {
 752                 struct i40e_ring *p;
 753                 u64 bytes, packets;
 754                 unsigned int start;
 755
 756                 /* locate Tx ring */
 757                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 758
 759                 do {
 760                         start = u64_stats_fetch_begin_bh(&p->syncp);
 761                         packets = p->stats.packets;
 762                         bytes = p->stats.bytes;
 763                 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
 764                 tx_b += bytes;
 765                 tx_p += packets;
 766                 tx_restart += p->tx_stats.restart_queue;
 767                 tx_busy += p->tx_stats.tx_busy;
 768
 769                 /* Rx queue is part of the same block as Tx queue */
 770                 p = &p[1];
 771                 do {
 772                         start = u64_stats_fetch_begin_bh(&p->syncp);
 773                         packets = p->stats.packets;
 774                         bytes = p->stats.bytes;
 775                 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
 776                 rx_b += bytes;
 777                 rx_p += packets;
 778                 rx_buf += p->rx_stats.alloc_rx_buff_failed;
 779                 rx_page += p->rx_stats.alloc_rx_page_failed;
 780         }
 781         rcu_read_unlock();
 782         vsi->tx_restart = tx_restart;
 783         vsi->tx_busy = tx_busy;
 784         vsi->rx_page_failed = rx_page;
 785         vsi->rx_buf_failed = rx_buf;
 786
 787         ns->rx_packets = rx_p;
 788         ns->rx_bytes = rx_b;
 789         ns->tx_packets = tx_p;
 790         ns->tx_bytes = tx_b;
 791
 792         i40e_update_eth_stats(vsi);
 793         /* update netdev stats from eth stats */
 794         ons->rx_errors = oes->rx_errors;
 795         ns->rx_errors = es->rx_errors;
 796         ons->tx_errors = oes->tx_errors;
 797         ns->tx_errors = es->tx_errors;
 798         ons->multicast = oes->rx_multicast;
 799         ns->multicast = es->rx_multicast;
 800         ons->tx_dropped = oes->tx_discards;
 801         ns->tx_dropped = es->tx_discards;
 802
 803         /* Get the port data only if this is the main PF VSI */
 804         if (vsi == pf->vsi[pf->lan_vsi]) {
 805                 struct i40e_hw_port_stats *nsd = &pf->stats;
 806                 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 807
 808                 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 809                                    I40E_GLPRT_GORCL(hw->port),
 810                                    pf->stat_offsets_loaded,
 811                                    &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 812                 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 813                                    I40E_GLPRT_GOTCL(hw->port),
 814                                    pf->stat_offsets_loaded,
 815                                    &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 816                 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 817                                    pf->stat_offsets_loaded,
 818                                    &osd->eth.rx_discards,
 819                                    &nsd->eth.rx_discards);
 820                 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 821                                    pf->stat_offsets_loaded,
 822                                    &osd->eth.tx_discards,
 823                                    &nsd->eth.tx_discards);
 824                 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 825                                    I40E_GLPRT_MPRCL(hw->port),
 826                                    pf->stat_offsets_loaded,
 827                                    &osd->eth.rx_multicast,
 828                                    &nsd->eth.rx_multicast);
 829
 830                 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 831                                    pf->stat_offsets_loaded,
 832                                    &osd->tx_dropped_link_down,
 833                                    &nsd->tx_dropped_link_down);
 834
 835                 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 836                                    pf->stat_offsets_loaded,
 837                                    &osd->crc_errors, &nsd->crc_errors);
 838                 ns->rx_crc_errors = nsd->crc_errors;
 839
 840                 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 841                                    pf->stat_offsets_loaded,
 842                                    &osd->illegal_bytes, &nsd->illegal_bytes);
 843                 ns->rx_errors = nsd->crc_errors
 844                                 + nsd->illegal_bytes;
 845
 846                 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 847                                    pf->stat_offsets_loaded,
 848                                    &osd->mac_local_faults,
 849                                    &nsd->mac_local_faults);
 850                 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 851                                    pf->stat_offsets_loaded,
 852                                    &osd->mac_remote_faults,
 853                                    &nsd->mac_remote_faults);
 854
 855                 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 856                                    pf->stat_offsets_loaded,
 857                                    &osd->rx_length_errors,
 858                                    &nsd->rx_length_errors);
 859                 ns->rx_length_errors = nsd->rx_length_errors;
 860
 861                 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 862                                    pf->stat_offsets_loaded,
 863                                    &osd->link_xon_rx, &nsd->link_xon_rx);
 864                 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 865                                    pf->stat_offsets_loaded,
 866                                    &osd->link_xon_tx, &nsd->link_xon_tx);
 867                 i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 868                 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 869                                    pf->stat_offsets_loaded,
 870                                    &osd->link_xoff_tx, &nsd->link_xoff_tx);
 871
 872                 for (i = 0; i < 8; i++) {
 873                         i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 874                                            pf->stat_offsets_loaded,
 875                                            &osd->priority_xon_rx[i],
 876                                            &nsd->priority_xon_rx[i]);
 877                         i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 878                                            pf->stat_offsets_loaded,
 879                                            &osd->priority_xon_tx[i],
 880                                            &nsd->priority_xon_tx[i]);
 881                         i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 882                                            pf->stat_offsets_loaded,
 883                                            &osd->priority_xoff_tx[i],
 884                                            &nsd->priority_xoff_tx[i]);
 885                         i40e_stat_update32(hw,
 886                                            I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 887                                            pf->stat_offsets_loaded,
 888                                            &osd->priority_xon_2_xoff[i],
 889                                            &nsd->priority_xon_2_xoff[i]);
 890                 }
 891
 892                 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 893                                    I40E_GLPRT_PRC64L(hw->port),
 894                                    pf->stat_offsets_loaded,
 895                                    &osd->rx_size_64, &nsd->rx_size_64);
 896                 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 897                                    I40E_GLPRT_PRC127L(hw->port),
 898                                    pf->stat_offsets_loaded,
 899                                    &osd->rx_size_127, &nsd->rx_size_127);
 900                 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 901                                    I40E_GLPRT_PRC255L(hw->port),
 902                                    pf->stat_offsets_loaded,
 903                                    &osd->rx_size_255, &nsd->rx_size_255);
 904                 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 905                                    I40E_GLPRT_PRC511L(hw->port),
 906                                    pf->stat_offsets_loaded,
 907                                    &osd->rx_size_511, &nsd->rx_size_511);
 908                 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 909                                    I40E_GLPRT_PRC1023L(hw->port),
 910                                    pf->stat_offsets_loaded,
 911                                    &osd->rx_size_1023, &nsd->rx_size_1023);
 912                 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 913                                    I40E_GLPRT_PRC1522L(hw->port),
 914                                    pf->stat_offsets_loaded,
 915                                    &osd->rx_size_1522, &nsd->rx_size_1522);
 916                 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 917                                    I40E_GLPRT_PRC9522L(hw->port),
 918                                    pf->stat_offsets_loaded,
 919                                    &osd->rx_size_big, &nsd->rx_size_big);
 920
 921                 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 922                                    I40E_GLPRT_PTC64L(hw->port),
 923                                    pf->stat_offsets_loaded,
 924                                    &osd->tx_size_64, &nsd->tx_size_64);
 925                 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 926                                    I40E_GLPRT_PTC127L(hw->port),
 927                                    pf->stat_offsets_loaded,
 928                                    &osd->tx_size_127, &nsd->tx_size_127);
 929                 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 930                                    I40E_GLPRT_PTC255L(hw->port),
 931                                    pf->stat_offsets_loaded,
 932                                    &osd->tx_size_255, &nsd->tx_size_255);
 933                 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 934                                    I40E_GLPRT_PTC511L(hw->port),
 935                                    pf->stat_offsets_loaded,
 936                                    &osd->tx_size_511, &nsd->tx_size_511);
 937                 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 938                                    I40E_GLPRT_PTC1023L(hw->port),
 939                                    pf->stat_offsets_loaded,
 940                                    &osd->tx_size_1023, &nsd->tx_size_1023);
 941                 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 942                                    I40E_GLPRT_PTC1522L(hw->port),
 943                                    pf->stat_offsets_loaded,
 944                                    &osd->tx_size_1522, &nsd->tx_size_1522);
 945                 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
 946                                    I40E_GLPRT_PTC9522L(hw->port),
 947                                    pf->stat_offsets_loaded,
 948                                    &osd->tx_size_big, &nsd->tx_size_big);
 949
 950                 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
 951                                    pf->stat_offsets_loaded,
 952                                    &osd->rx_undersize, &nsd->rx_undersize);
 953                 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
 954                                    pf->stat_offsets_loaded,
 955                                    &osd->rx_fragments, &nsd->rx_fragments);
 956                 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
 957                                    pf->stat_offsets_loaded,
 958                                    &osd->rx_oversize, &nsd->rx_oversize);
 959                 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
 960                                    pf->stat_offsets_loaded,
 961                                    &osd->rx_jabber, &nsd->rx_jabber);
 962         }
 963
 964         pf->stat_offsets_loaded = true;
 965 }
 966
 967 /**
 968  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 969  * @vsi: the VSI to be searched
 970  * @macaddr: the MAC address
 971  * @vlan: the vlan
 972  * @is_vf: make sure its a vf filter, else doesn't matter
 973  * @is_netdev: make sure its a netdev filter, else doesn't matter
 974  *
 975  * Returns ptr to the filter object or NULL
 976  **/
 977 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
 978                                                 u8 *macaddr, s16 vlan,
 979                                                 bool is_vf, bool is_netdev)
 980 {
 981         struct i40e_mac_filter *f;
 982
 983         if (!vsi || !macaddr)
 984                 return NULL;
 985
 986         list_for_each_entry(f, &vsi->mac_filter_list, list) {
 987                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
 988                     (vlan == f->vlan)    &&
 989                     (!is_vf || f->is_vf) &&
 990                     (!is_netdev || f->is_netdev))
 991                         return f;
 992         }
 993         return NULL;
 994 }
 995
 996 /**
 997  * i40e_find_mac - Find a mac addr in the macvlan filters list
 998  * @vsi: the VSI to be searched
 999  * @macaddr: the MAC address we are searching for
1000  * @is_vf: make sure its a vf filter, else doesn't matter
1001  * @is_netdev: make sure its a netdev filter, else doesn't matter
1002  *
1003  * Returns the first filter with the provided MAC address or NULL if
1004  * MAC address was not found
1005  **/
1006 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1007                                       bool is_vf, bool is_netdev)
1008 {
1009         struct i40e_mac_filter *f;
1010
1011         if (!vsi || !macaddr)
1012                 return NULL;
1013
1014         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1015                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1016                     (!is_vf || f->is_vf) &&
1017                     (!is_netdev || f->is_netdev))
1018                         return f;
1019         }
1020         return NULL;
1021 }
1022
1023 /**
1024  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1025  * @vsi: the VSI to be searched
1026  *
1027  * Returns true if VSI is in vlan mode or false otherwise
1028  **/
1029 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1030 {
1031         struct i40e_mac_filter *f;
1032
1033         /* Only -1 for all the filters denotes not in vlan mode
1034          * so we have to go through all the list in order to make sure
1035          */
1036         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1037                 if (f->vlan >= 0)
1038                         return true;
1039         }
1040
1041         return false;
1042 }
1043
1044 /**
1045  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1046  * @vsi: the VSI to be searched
1047  * @macaddr: the mac address to be filtered
1048  * @is_vf: true if it is a vf
1049  * @is_netdev: true if it is a netdev
1050  *
1051  * Goes through all the macvlan filters and adds a
1052  * macvlan filter for each unique vlan that already exists
1053  *
1054  * Returns first filter found on success, else NULL
1055  **/
1056 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1057                                              bool is_vf, bool is_netdev)
1058 {
1059         struct i40e_mac_filter *f;
1060
1061         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1062                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1063                                       is_vf, is_netdev)) {
1064                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1065                                                 is_vf, is_netdev))
1066                                 return NULL;
1067                 }
1068         }
1069
1070         return list_first_entry_or_null(&vsi->mac_filter_list,
1071                                         struct i40e_mac_filter, list);
1072 }
1073
1074 /**
1075  * i40e_add_filter - Add a mac/vlan filter to the VSI
1076  * @vsi: the VSI to be searched
1077  * @macaddr: the MAC address
1078  * @vlan: the vlan
1079  * @is_vf: make sure its a vf filter, else doesn't matter
1080  * @is_netdev: make sure its a netdev filter, else doesn't matter
1081  *
1082  * Returns ptr to the filter object or NULL when no memory available.
1083  **/
1084 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1085                                         u8 *macaddr, s16 vlan,
1086                                         bool is_vf, bool is_netdev)
1087 {
1088         struct i40e_mac_filter *f;
1089
1090         if (!vsi || !macaddr)
1091                 return NULL;
1092
1093         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1094         if (!f) {
1095                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1096                 if (!f)
1097                         goto add_filter_out;
1098
1099                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1100                 f->vlan = vlan;
1101                 f->changed = true;
1102
1103                 INIT_LIST_HEAD(&f->list);
1104                 list_add(&f->list, &vsi->mac_filter_list);
1105         }
1106
1107         /* increment counter and add a new flag if needed */
1108         if (is_vf) {
1109                 if (!f->is_vf) {
1110                         f->is_vf = true;
1111                         f->counter++;
1112                 }
1113         } else if (is_netdev) {
1114                 if (!f->is_netdev) {
1115                         f->is_netdev = true;
1116                         f->counter++;
1117                 }
1118         } else {
1119                 f->counter++;
1120         }
1121
1122         /* changed tells sync_filters_subtask to
1123          * push the filter down to the firmware
1124          */
1125         if (f->changed) {
1126                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1127                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1128         }
1129
1130 add_filter_out:
1131         return f;
1132 }
1133
1134 /**
1135  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1136  * @vsi: the VSI to be searched
1137  * @macaddr: the MAC address
1138  * @vlan: the vlan
1139  * @is_vf: make sure it's a vf filter, else doesn't matter
1140  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1141  **/
1142 void i40e_del_filter(struct i40e_vsi *vsi,
1143                      u8 *macaddr, s16 vlan,
1144                      bool is_vf, bool is_netdev)
1145 {
1146         struct i40e_mac_filter *f;
1147
1148         if (!vsi || !macaddr)
1149                 return;
1150
1151         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1152         if (!f || f->counter == 0)
1153                 return;
1154
1155         if (is_vf) {
1156                 if (f->is_vf) {
1157                         f->is_vf = false;
1158                         f->counter--;
1159                 }
1160         } else if (is_netdev) {
1161                 if (f->is_netdev) {
1162                         f->is_netdev = false;
1163                         f->counter--;
1164                 }
1165         } else {
1166                 /* make sure we don't remove a filter in use by vf or netdev */
1167                 int min_f = 0;
1168                 min_f += (f->is_vf ? 1 : 0);
1169                 min_f += (f->is_netdev ? 1 : 0);
1170
1171                 if (f->counter > min_f)
1172                         f->counter--;
1173         }
1174
1175         /* counter == 0 tells sync_filters_subtask to
1176          * remove the filter from the firmware's list
1177          */
1178         if (f->counter == 0) {
1179                 f->changed = true;
1180                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1181                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1182         }
1183 }
1184
1185 /**
1186  * i40e_set_mac - NDO callback to set mac address
1187  * @netdev: network interface device structure
1188  * @p: pointer to an address structure
1189  *
1190  * Returns 0 on success, negative on failure
1191  **/
1192 static int i40e_set_mac(struct net_device *netdev, void *p)
1193 {
1194         struct i40e_netdev_priv *np = netdev_priv(netdev);
1195         struct i40e_vsi *vsi = np->vsi;
1196         struct sockaddr *addr = p;
1197         struct i40e_mac_filter *f;
1198
1199         if (!is_valid_ether_addr(addr->sa_data))
1200                 return -EADDRNOTAVAIL;
1201
1202         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1203
1204         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1205                 return 0;
1206
1207         if (vsi->type == I40E_VSI_MAIN) {
1208                 i40e_status ret;
1209                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1210                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1211                                                 addr->sa_data, NULL);
1212                 if (ret) {
1213                         netdev_info(netdev,
1214                                     "Addr change for Main VSI failed: %d\n",
1215                                     ret);
1216                         return -EADDRNOTAVAIL;
1217                 }
1218
1219                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1220         }
1221
1222         /* In order to be sure to not drop any packets, add the new address
1223          * then delete the old one.
1224          */
1225         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1226         if (!f)
1227                 return -ENOMEM;
1228
1229         i40e_sync_vsi_filters(vsi);
1230         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1231         i40e_sync_vsi_filters(vsi);
1232
1233         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1234
1235         return 0;
1236 }
1237
1238 /**
1239  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1240  * @vsi: the VSI being setup
1241  * @ctxt: VSI context structure
1242  * @enabled_tc: Enabled TCs bitmap
1243  * @is_add: True if called before Add VSI
1244  *
1245  * Setup VSI queue mapping for enabled traffic classes.
1246  **/
1247 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1248                                      struct i40e_vsi_context *ctxt,
1249                                      u8 enabled_tc,
1250                                      bool is_add)
1251 {
1252         struct i40e_pf *pf = vsi->back;
1253         u16 sections = 0;
1254         u8 netdev_tc = 0;
1255         u16 numtc = 0;
1256         u16 qcount;
1257         u8 offset;
1258         u16 qmap;
1259         int i;
1260
1261         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1262         offset = 0;
1263
1264         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1265                 /* Find numtc from enabled TC bitmap */
1266                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1267                         if (enabled_tc & (1 << i)) /* TC is enabled */
1268                                 numtc++;
1269                 }
1270                 if (!numtc) {
1271                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1272                         numtc = 1;
1273                 }
1274         } else {
1275                 /* At least TC0 is enabled in case of non-DCB case */
1276                 numtc = 1;
1277         }
1278
1279         vsi->tc_config.numtc = numtc;
1280         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1281
1282         /* Setup queue offset/count for all TCs for given VSI */
1283         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1284                 /* See if the given TC is enabled for the given VSI */
1285                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1286                         int pow, num_qps;
1287
1288                         vsi->tc_config.tc_info[i].qoffset = offset;
1289                         switch (vsi->type) {
1290                         case I40E_VSI_MAIN:
1291                                 if (i == 0)
1292                                         qcount = pf->rss_size;
1293                                 else
1294                                         qcount = pf->num_tc_qps;
1295                                 vsi->tc_config.tc_info[i].qcount = qcount;
1296                                 break;
1297                         case I40E_VSI_FDIR:
1298                         case I40E_VSI_SRIOV:
1299                         case I40E_VSI_VMDQ2:
1300                         default:
1301                                 qcount = vsi->alloc_queue_pairs;
1302                                 vsi->tc_config.tc_info[i].qcount = qcount;
1303                                 WARN_ON(i != 0);
1304                                 break;
1305                         }
1306
1307                         /* find the power-of-2 of the number of queue pairs */
1308                         num_qps = vsi->tc_config.tc_info[i].qcount;
1309                         pow = 0;
1310                         while (num_qps &&
1311                               ((1 << pow) < vsi->tc_config.tc_info[i].qcount)) {
1312                                 pow++;
1313                                 num_qps >>= 1;
1314                         }
1315
1316                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1317                         qmap =
1318                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1319                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1320
1321                         offset += vsi->tc_config.tc_info[i].qcount;
1322                 } else {
1323                         /* TC is not enabled so set the offset to
1324                          * default queue and allocate one queue
1325                          * for the given TC.
1326                          */
1327                         vsi->tc_config.tc_info[i].qoffset = 0;
1328                         vsi->tc_config.tc_info[i].qcount = 1;
1329                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1330
1331                         qmap = 0;
1332                 }
1333                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1334         }
1335
1336         /* Set actual Tx/Rx queue pairs */
1337         vsi->num_queue_pairs = offset;
1338
1339         /* Scheduler section valid can only be set for ADD VSI */
1340         if (is_add) {
1341                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1342
1343                 ctxt->info.up_enable_bits = enabled_tc;
1344         }
1345         if (vsi->type == I40E_VSI_SRIOV) {
1346                 ctxt->info.mapping_flags |=
1347                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1348                 for (i = 0; i < vsi->num_queue_pairs; i++)
1349                         ctxt->info.queue_mapping[i] =
1350                                                cpu_to_le16(vsi->base_queue + i);
1351         } else {
1352                 ctxt->info.mapping_flags |=
1353                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1354                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1355         }
1356         ctxt->info.valid_sections |= cpu_to_le16(sections);
1357 }
1358
1359 /**
1360  * i40e_set_rx_mode - NDO callback to set the netdev filters
1361  * @netdev: network interface device structure
1362  **/
1363 static void i40e_set_rx_mode(struct net_device *netdev)
1364 {
1365         struct i40e_netdev_priv *np = netdev_priv(netdev);
1366         struct i40e_mac_filter *f, *ftmp;
1367         struct i40e_vsi *vsi = np->vsi;
1368         struct netdev_hw_addr *uca;
1369         struct netdev_hw_addr *mca;
1370         struct netdev_hw_addr *ha;
1371
1372         /* add addr if not already in the filter list */
1373         netdev_for_each_uc_addr(uca, netdev) {
1374                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1375                         if (i40e_is_vsi_in_vlan(vsi))
1376                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1377                                                      false, true);
1378                         else
1379                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1380                                                 false, true);
1381                 }
1382         }
1383
1384         netdev_for_each_mc_addr(mca, netdev) {
1385                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1386                         if (i40e_is_vsi_in_vlan(vsi))
1387                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1388                                                      false, true);
1389                         else
1390                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1391                                                 false, true);
1392                 }
1393         }
1394
1395         /* remove filter if not in netdev list */
1396         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1397                 bool found = false;
1398
1399                 if (!f->is_netdev)
1400                         continue;
1401
1402                 if (is_multicast_ether_addr(f->macaddr)) {
1403                         netdev_for_each_mc_addr(mca, netdev) {
1404                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1405                                         found = true;
1406                                         break;
1407                                 }
1408                         }
1409                 } else {
1410                         netdev_for_each_uc_addr(uca, netdev) {
1411                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1412                                         found = true;
1413                                         break;
1414                                 }
1415                         }
1416
1417                         for_each_dev_addr(netdev, ha) {
1418                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1419                                         found = true;
1420                                         break;
1421                                 }
1422                         }
1423                 }
1424                 if (!found)
1425                         i40e_del_filter(
1426                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1427         }
1428
1429         /* check for other flag changes */
1430         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1431                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1432                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1433         }
1434 }
1435
1436 /**
1437  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1438  * @vsi: ptr to the VSI
1439  *
1440  * Push any outstanding VSI filter changes through the AdminQ.
1441  *
1442  * Returns 0 or error value
1443  **/
1444 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1445 {
1446         struct i40e_mac_filter *f, *ftmp;
1447         bool promisc_forced_on = false;
1448         bool add_happened = false;
1449         int filter_list_len = 0;
1450         u32 changed_flags = 0;
1451         i40e_status aq_ret = 0;
1452         struct i40e_pf *pf;
1453         int num_add = 0;
1454         int num_del = 0;
1455         u16 cmd_flags;
1456
1457         /* empty array typed pointers, kcalloc later */
1458         struct i40e_aqc_add_macvlan_element_data *add_list;
1459         struct i40e_aqc_remove_macvlan_element_data *del_list;
1460
1461         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1462                 usleep_range(1000, 2000);
1463         pf = vsi->back;
1464
1465         if (vsi->netdev) {
1466                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1467                 vsi->current_netdev_flags = vsi->netdev->flags;
1468         }
1469
1470         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1471                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1472
1473                 filter_list_len = pf->hw.aq.asq_buf_size /
1474                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1475                 del_list = kcalloc(filter_list_len,
1476                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1477                             GFP_KERNEL);
1478                 if (!del_list)
1479                         return -ENOMEM;
1480
1481                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1482                         if (!f->changed)
1483                                 continue;
1484
1485                         if (f->counter != 0)
1486                                 continue;
1487                         f->changed = false;
1488                         cmd_flags = 0;
1489
1490                         /* add to delete list */
1491                         memcpy(del_list[num_del].mac_addr,
1492                                f->macaddr, ETH_ALEN);
1493                         del_list[num_del].vlan_tag =
1494                                 cpu_to_le16((u16)(f->vlan ==
1495                                             I40E_VLAN_ANY ? 0 : f->vlan));
1496
1497                         /* vlan0 as wild card to allow packets from all vlans */
1498                         if (f->vlan == I40E_VLAN_ANY ||
1499                             (vsi->netdev && !(vsi->netdev->features &
1500                                               NETIF_F_HW_VLAN_CTAG_FILTER)))
1501                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1502                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1503                         del_list[num_del].flags = cmd_flags;
1504                         num_del++;
1505
1506                         /* unlink from filter list */
1507                         list_del(&f->list);
1508                         kfree(f);
1509
1510                         /* flush a full buffer */
1511                         if (num_del == filter_list_len) {
1512                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1513                                             vsi->seid, del_list, num_del,
1514                                             NULL);
1515                                 num_del = 0;
1516                                 memset(del_list, 0, sizeof(*del_list));
1517
1518                                 if (aq_ret)
1519                                         dev_info(&pf->pdev->dev,
1520                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1521                                                  aq_ret,
1522                                                  pf->hw.aq.asq_last_status);
1523                         }
1524                 }
1525                 if (num_del) {
1526                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1527                                                      del_list, num_del, NULL);
1528                         num_del = 0;
1529
1530                         if (aq_ret)
1531                                 dev_info(&pf->pdev->dev,
1532                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1533                                          aq_ret, pf->hw.aq.asq_last_status);
1534                 }
1535
1536                 kfree(del_list);
1537                 del_list = NULL;
1538
1539                 /* do all the adds now */
1540                 filter_list_len = pf->hw.aq.asq_buf_size /
1541                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1542                 add_list = kcalloc(filter_list_len,
1543                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1544                                GFP_KERNEL);
1545                 if (!add_list)
1546                         return -ENOMEM;
1547
1548                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1549                         if (!f->changed)
1550                                 continue;
1551
1552                         if (f->counter == 0)
1553                                 continue;
1554                         f->changed = false;
1555                         add_happened = true;
1556                         cmd_flags = 0;
1557
1558                         /* add to add array */
1559                         memcpy(add_list[num_add].mac_addr,
1560                                f->macaddr, ETH_ALEN);
1561                         add_list[num_add].vlan_tag =
1562                                 cpu_to_le16(
1563                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1564                         add_list[num_add].queue_number = 0;
1565
1566                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1567
1568                         /* vlan0 as wild card to allow packets from all vlans */
1569                         if (f->vlan == I40E_VLAN_ANY || (vsi->netdev &&
1570                             !(vsi->netdev->features &
1571                                                  NETIF_F_HW_VLAN_CTAG_FILTER)))
1572                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1573                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1574                         num_add++;
1575
1576                         /* flush a full buffer */
1577                         if (num_add == filter_list_len) {
1578                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1579                                                              add_list, num_add,
1580                                                              NULL);
1581                                 num_add = 0;
1582
1583                                 if (aq_ret)
1584                                         break;
1585                                 memset(add_list, 0, sizeof(*add_list));
1586                         }
1587                 }
1588                 if (num_add) {
1589                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1590                                                      add_list, num_add, NULL);
1591                         num_add = 0;
1592                 }
1593                 kfree(add_list);
1594                 add_list = NULL;
1595
1596                 if (add_happened && (!aq_ret)) {
1597                         /* do nothing */;
1598                 } else if (add_happened && (aq_ret)) {
1599                         dev_info(&pf->pdev->dev,
1600                                  "add filter failed, err %d, aq_err %d\n",
1601                                  aq_ret, pf->hw.aq.asq_last_status);
1602                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1603                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1604                                       &vsi->state)) {
1605                                 promisc_forced_on = true;
1606                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1607                                         &vsi->state);
1608                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1609                         }
1610                 }
1611         }
1612
1613         /* check for changes in promiscuous modes */
1614         if (changed_flags & IFF_ALLMULTI) {
1615                 bool cur_multipromisc;
1616                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1617                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1618                                                                vsi->seid,
1619                                                                cur_multipromisc,
1620                                                                NULL);
1621                 if (aq_ret)
1622                         dev_info(&pf->pdev->dev,
1623                                  "set multi promisc failed, err %d, aq_err %d\n",
1624                                  aq_ret, pf->hw.aq.asq_last_status);
1625         }
1626         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1627                 bool cur_promisc;
1628                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1629                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1630                                         &vsi->state));
1631                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1632                                                              vsi->seid,
1633                                                              cur_promisc, NULL);
1634                 if (aq_ret)
1635                         dev_info(&pf->pdev->dev,
1636                                  "set uni promisc failed, err %d, aq_err %d\n",
1637                                  aq_ret, pf->hw.aq.asq_last_status);
1638         }
1639
1640         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1641         return 0;
1642 }
1643
1644 /**
1645  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1646  * @pf: board private structure
1647  **/
1648 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1649 {
1650         int v;
1651
1652         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1653                 return;
1654         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1655
1656         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1657                 if (pf->vsi[v] &&
1658                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1659                         i40e_sync_vsi_filters(pf->vsi[v]);
1660         }
1661 }
1662
1663 /**
1664  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1665  * @netdev: network interface device structure
1666  * @new_mtu: new value for maximum frame size
1667  *
1668  * Returns 0 on success, negative on failure
1669  **/
1670 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1671 {
1672         struct i40e_netdev_priv *np = netdev_priv(netdev);
1673         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1674         struct i40e_vsi *vsi = np->vsi;
1675
1676         /* MTU < 68 is an error and causes problems on some kernels */
1677         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1678                 return -EINVAL;
1679
1680         netdev_info(netdev, "changing MTU from %d to %d\n",
1681                     netdev->mtu, new_mtu);
1682         netdev->mtu = new_mtu;
1683         if (netif_running(netdev))
1684                 i40e_vsi_reinit_locked(vsi);
1685
1686         return 0;
1687 }
1688
1689 /**
1690  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1691  * @vsi: the vsi being adjusted
1692  **/
1693 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1694 {
1695         struct i40e_vsi_context ctxt;
1696         i40e_status ret;
1697
1698         if ((vsi->info.valid_sections &
1699              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1700             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1701                 return;  /* already enabled */
1702
1703         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1704         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1705                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1706
1707         ctxt.seid = vsi->seid;
1708         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1709         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1710         if (ret) {
1711                 dev_info(&vsi->back->pdev->dev,
1712                          "%s: update vsi failed, aq_err=%d\n",
1713                          __func__, vsi->back->hw.aq.asq_last_status);
1714         }
1715 }
1716
1717 /**
1718  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1719  * @vsi: the vsi being adjusted
1720  **/
1721 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1722 {
1723         struct i40e_vsi_context ctxt;
1724         i40e_status ret;
1725
1726         if ((vsi->info.valid_sections &
1727              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1728             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1729              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1730                 return;  /* already disabled */
1731
1732         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1733         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1734                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1735
1736         ctxt.seid = vsi->seid;
1737         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1738         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1739         if (ret) {
1740                 dev_info(&vsi->back->pdev->dev,
1741                          "%s: update vsi failed, aq_err=%d\n",
1742                          __func__, vsi->back->hw.aq.asq_last_status);
1743         }
1744 }
1745
1746 /**
1747  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1748  * @netdev: network interface to be adjusted
1749  * @features: netdev features to test if VLAN offload is enabled or not
1750  **/
1751 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1752 {
1753         struct i40e_netdev_priv *np = netdev_priv(netdev);
1754         struct i40e_vsi *vsi = np->vsi;
1755
1756         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1757                 i40e_vlan_stripping_enable(vsi);
1758         else
1759                 i40e_vlan_stripping_disable(vsi);
1760 }
1761
1762 /**
1763  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1764  * @vsi: the vsi being configured
1765  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1766  **/
1767 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1768 {
1769         struct i40e_mac_filter *f, *add_f;
1770         bool is_netdev, is_vf;
1771         int ret;
1772
1773         is_vf = (vsi->type == I40E_VSI_SRIOV);
1774         is_netdev = !!(vsi->netdev);
1775
1776         if (is_netdev) {
1777                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1778                                         is_vf, is_netdev);
1779                 if (!add_f) {
1780                         dev_info(&vsi->back->pdev->dev,
1781                                  "Could not add vlan filter %d for %pM\n",
1782                                  vid, vsi->netdev->dev_addr);
1783                         return -ENOMEM;
1784                 }
1785         }
1786
1787         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1788                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1789                 if (!add_f) {
1790                         dev_info(&vsi->back->pdev->dev,
1791                                  "Could not add vlan filter %d for %pM\n",
1792                                  vid, f->macaddr);
1793                         return -ENOMEM;
1794                 }
1795         }
1796
1797         ret = i40e_sync_vsi_filters(vsi);
1798         if (ret) {
1799                 dev_info(&vsi->back->pdev->dev,
1800                          "Could not sync filters for vid %d\n", vid);
1801                 return ret;
1802         }
1803
1804         /* Now if we add a vlan tag, make sure to check if it is the first
1805          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1806          * with 0, so we now accept untagged and specified tagged traffic
1807          * (and not any taged and untagged)
1808          */
1809         if (vid > 0) {
1810                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1811                                                   I40E_VLAN_ANY,
1812                                                   is_vf, is_netdev)) {
1813                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1814                                         I40E_VLAN_ANY, is_vf, is_netdev);
1815                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1816                                                 is_vf, is_netdev);
1817                         if (!add_f) {
1818                                 dev_info(&vsi->back->pdev->dev,
1819                                          "Could not add filter 0 for %pM\n",
1820                                          vsi->netdev->dev_addr);
1821                                 return -ENOMEM;
1822                         }
1823                 }
1824
1825                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1826                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1827                                              is_vf, is_netdev)) {
1828                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1829                                                 is_vf, is_netdev);
1830                                 add_f = i40e_add_filter(vsi, f->macaddr,
1831                                                         0, is_vf, is_netdev);
1832                                 if (!add_f) {
1833                                         dev_info(&vsi->back->pdev->dev,
1834                                                  "Could not add filter 0 for %pM\n",
1835                                                  f->macaddr);
1836                                         return -ENOMEM;
1837                                 }
1838                         }
1839                 }
1840                 ret = i40e_sync_vsi_filters(vsi);
1841         }
1842
1843         return ret;
1844 }
1845
1846 /**
1847  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1848  * @vsi: the vsi being configured
1849  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1850  *
1851  * Return: 0 on success or negative otherwise
1852  **/
1853 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1854 {
1855         struct net_device *netdev = vsi->netdev;
1856         struct i40e_mac_filter *f, *add_f;
1857         bool is_vf, is_netdev;
1858         int filter_count = 0;
1859         int ret;
1860
1861         is_vf = (vsi->type == I40E_VSI_SRIOV);
1862         is_netdev = !!(netdev);
1863
1864         if (is_netdev)
1865                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1866
1867         list_for_each_entry(f, &vsi->mac_filter_list, list)
1868                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1869
1870         ret = i40e_sync_vsi_filters(vsi);
1871         if (ret) {
1872                 dev_info(&vsi->back->pdev->dev, "Could not sync filters\n");
1873                 return ret;
1874         }
1875
1876         /* go through all the filters for this VSI and if there is only
1877          * vid == 0 it means there are no other filters, so vid 0 must
1878          * be replaced with -1. This signifies that we should from now
1879          * on accept any traffic (with any tag present, or untagged)
1880          */
1881         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1882                 if (is_netdev) {
1883                         if (f->vlan &&
1884                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1885                                 filter_count++;
1886                 }
1887
1888                 if (f->vlan)
1889                         filter_count++;
1890         }
1891
1892         if (!filter_count && is_netdev) {
1893                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1894                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1895                                     is_vf, is_netdev);
1896                 if (!f) {
1897                         dev_info(&vsi->back->pdev->dev,
1898                                  "Could not add filter %d for %pM\n",
1899                                  I40E_VLAN_ANY, netdev->dev_addr);
1900                         return -ENOMEM;
1901                 }
1902         }
1903
1904         if (!filter_count) {
1905                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1906                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1907                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1908                                             is_vf, is_netdev);
1909                         if (!add_f) {
1910                                 dev_info(&vsi->back->pdev->dev,
1911                                          "Could not add filter %d for %pM\n",
1912                                          I40E_VLAN_ANY, f->macaddr);
1913                                 return -ENOMEM;
1914                         }
1915                 }
1916         }
1917
1918         return i40e_sync_vsi_filters(vsi);
1919 }
1920
1921 /**
1922  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1923  * @netdev: network interface to be adjusted
1924  * @vid: vlan id to be added
1925  *
1926  * net_device_ops implementation for adding vlan ids
1927  **/
1928 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1929                                 __always_unused __be16 proto, u16 vid)
1930 {
1931         struct i40e_netdev_priv *np = netdev_priv(netdev);
1932         struct i40e_vsi *vsi = np->vsi;
1933         int ret = 0;
1934
1935         if (vid > 4095)
1936                 return -EINVAL;
1937
1938         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1939
1940         /* If the network stack called us with vid = 0, we should
1941          * indicate to i40e_vsi_add_vlan() that we want to receive
1942          * any traffic (i.e. with any vlan tag, or untagged)
1943          */
1944         ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY);
1945
1946         if (!ret && (vid < VLAN_N_VID))
1947                 set_bit(vid, vsi->active_vlans);
1948
1949         return ret;
1950 }
1951
1952 /**
1953  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
1954  * @netdev: network interface to be adjusted
1955  * @vid: vlan id to be removed
1956  *
1957  * net_device_ops implementation for adding vlan ids
1958  **/
1959 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
1960                                  __always_unused __be16 proto, u16 vid)
1961 {
1962         struct i40e_netdev_priv *np = netdev_priv(netdev);
1963         struct i40e_vsi *vsi = np->vsi;
1964
1965         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
1966
1967         /* return code is ignored as there is nothing a user
1968          * can do about failure to remove and a log message was
1969          * already printed from the other function
1970          */
1971         i40e_vsi_kill_vlan(vsi, vid);
1972
1973         clear_bit(vid, vsi->active_vlans);
1974
1975         return 0;
1976 }
1977
1978 /**
1979  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
1980  * @vsi: the vsi being brought back up
1981  **/
1982 static void i40e_restore_vlan(struct i40e_vsi *vsi)
1983 {
1984         u16 vid;
1985
1986         if (!vsi->netdev)
1987                 return;
1988
1989         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
1990
1991         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
1992                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
1993                                      vid);
1994 }
1995
1996 /**
1997  * i40e_vsi_add_pvid - Add pvid for the VSI
1998  * @vsi: the vsi being adjusted
1999  * @vid: the vlan id to set as a PVID
2000  **/
2001 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2002 {
2003         struct i40e_vsi_context ctxt;
2004         i40e_status aq_ret;
2005
2006         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2007         vsi->info.pvid = cpu_to_le16(vid);
2008         vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_INSERT_PVID;
2009         vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_UNTAGGED;
2010
2011         ctxt.seid = vsi->seid;
2012         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2013         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2014         if (aq_ret) {
2015                 dev_info(&vsi->back->pdev->dev,
2016                          "%s: update vsi failed, aq_err=%d\n",
2017                          __func__, vsi->back->hw.aq.asq_last_status);
2018                 return -ENOENT;
2019         }
2020
2021         return 0;
2022 }
2023
2024 /**
2025  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2026  * @vsi: the vsi being adjusted
2027  *
2028  * Just use the vlan_rx_register() service to put it back to normal
2029  **/
2030 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2031 {
2032         vsi->info.pvid = 0;
2033         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2034 }
2035
2036 /**
2037  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2038  * @vsi: ptr to the VSI
2039  *
2040  * If this function returns with an error, then it's possible one or
2041  * more of the rings is populated (while the rest are not).  It is the
2042  * callers duty to clean those orphaned rings.
2043  *
2044  * Return 0 on success, negative on failure
2045  **/
2046 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2047 {
2048         int i, err = 0;
2049
2050         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2051                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2052
2053         return err;
2054 }
2055
2056 /**
2057  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2058  * @vsi: ptr to the VSI
2059  *
2060  * Free VSI's transmit software resources
2061  **/
2062 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2063 {
2064         int i;
2065
2066         for (i = 0; i < vsi->num_queue_pairs; i++)
2067                 if (vsi->tx_rings[i]->desc)
2068                         i40e_free_tx_resources(vsi->tx_rings[i]);
2069 }
2070
2071 /**
2072  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2073  * @vsi: ptr to the VSI
2074  *
2075  * If this function returns with an error, then it's possible one or
2076  * more of the rings is populated (while the rest are not).  It is the
2077  * callers duty to clean those orphaned rings.
2078  *
2079  * Return 0 on success, negative on failure
2080  **/
2081 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2082 {
2083         int i, err = 0;
2084
2085         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2086                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2087         return err;
2088 }
2089
2090 /**
2091  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2092  * @vsi: ptr to the VSI
2093  *
2094  * Free all receive software resources
2095  **/
2096 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2097 {
2098         int i;
2099
2100         for (i = 0; i < vsi->num_queue_pairs; i++)
2101                 if (vsi->rx_rings[i]->desc)
2102                         i40e_free_rx_resources(vsi->rx_rings[i]);
2103 }
2104
2105 /**
2106  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2107  * @ring: The Tx ring to configure
2108  *
2109  * Configure the Tx descriptor ring in the HMC context.
2110  **/
2111 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2112 {
2113         struct i40e_vsi *vsi = ring->vsi;
2114         u16 pf_q = vsi->base_queue + ring->queue_index;
2115         struct i40e_hw *hw = &vsi->back->hw;
2116         struct i40e_hmc_obj_txq tx_ctx;
2117         i40e_status err = 0;
2118         u32 qtx_ctl = 0;
2119
2120         /* some ATR related tx ring init */
2121         if (vsi->back->flags & I40E_FLAG_FDIR_ATR_ENABLED) {
2122                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2123                 ring->atr_count = 0;
2124         } else {
2125                 ring->atr_sample_rate = 0;
2126         }
2127
2128         /* initialize XPS */
2129         if (ring->q_vector && ring->netdev &&
2130             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2131                 netif_set_xps_queue(ring->netdev,
2132                                     &ring->q_vector->affinity_mask,
2133                                     ring->queue_index);
2134
2135         /* clear the context structure first */
2136         memset(&tx_ctx, 0, sizeof(tx_ctx));
2137
2138         tx_ctx.new_context = 1;
2139         tx_ctx.base = (ring->dma / 128);
2140         tx_ctx.qlen = ring->count;
2141         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FDIR_ENABLED |
2142                         I40E_FLAG_FDIR_ATR_ENABLED));
2143
2144         /* As part of VSI creation/update, FW allocates certain
2145          * Tx arbitration queue sets for each TC enabled for
2146          * the VSI. The FW returns the handles to these queue
2147          * sets as part of the response buffer to Add VSI,
2148          * Update VSI, etc. AQ commands. It is expected that
2149          * these queue set handles be associated with the Tx
2150          * queues by the driver as part of the TX queue context
2151          * initialization. This has to be done regardless of
2152          * DCB as by default everything is mapped to TC0.
2153          */
2154         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2155         tx_ctx.rdylist_act = 0;
2156
2157         /* clear the context in the HMC */
2158         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2159         if (err) {
2160                 dev_info(&vsi->back->pdev->dev,
2161                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2162                          ring->queue_index, pf_q, err);
2163                 return -ENOMEM;
2164         }
2165
2166         /* set the context in the HMC */
2167         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2168         if (err) {
2169                 dev_info(&vsi->back->pdev->dev,
2170                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2171                          ring->queue_index, pf_q, err);
2172                 return -ENOMEM;
2173         }
2174
2175         /* Now associate this queue with this PCI function */
2176         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2177         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2178                     I40E_QTX_CTL_PF_INDX_MASK);
2179         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2180         i40e_flush(hw);
2181
2182         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2183
2184         /* cache tail off for easier writes later */
2185         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2186
2187         return 0;
2188 }
2189
2190 /**
2191  * i40e_configure_rx_ring - Configure a receive ring context
2192  * @ring: The Rx ring to configure
2193  *
2194  * Configure the Rx descriptor ring in the HMC context.
2195  **/
2196 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2197 {
2198         struct i40e_vsi *vsi = ring->vsi;
2199         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2200         u16 pf_q = vsi->base_queue + ring->queue_index;
2201         struct i40e_hw *hw = &vsi->back->hw;
2202         struct i40e_hmc_obj_rxq rx_ctx;
2203         i40e_status err = 0;
2204
2205         ring->state = 0;
2206
2207         /* clear the context structure first */
2208         memset(&rx_ctx, 0, sizeof(rx_ctx));
2209
2210         ring->rx_buf_len = vsi->rx_buf_len;
2211         ring->rx_hdr_len = vsi->rx_hdr_len;
2212
2213         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2214         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2215
2216         rx_ctx.base = (ring->dma / 128);
2217         rx_ctx.qlen = ring->count;
2218
2219         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2220                 set_ring_16byte_desc_enabled(ring);
2221                 rx_ctx.dsize = 0;
2222         } else {
2223                 rx_ctx.dsize = 1;
2224         }
2225
2226         rx_ctx.dtype = vsi->dtype;
2227         if (vsi->dtype) {
2228                 set_ring_ps_enabled(ring);
2229                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2230                                   I40E_RX_SPLIT_IP      |
2231                                   I40E_RX_SPLIT_TCP_UDP |
2232                                   I40E_RX_SPLIT_SCTP;
2233         } else {
2234                 rx_ctx.hsplit_0 = 0;
2235         }
2236
2237         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2238                                   (chain_len * ring->rx_buf_len));
2239         rx_ctx.tphrdesc_ena = 1;
2240         rx_ctx.tphwdesc_ena = 1;
2241         rx_ctx.tphdata_ena = 1;
2242         rx_ctx.tphhead_ena = 1;
2243         rx_ctx.lrxqthresh = 2;
2244         rx_ctx.crcstrip = 1;
2245         rx_ctx.l2tsel = 1;
2246         rx_ctx.showiv = 1;
2247
2248         /* clear the context in the HMC */
2249         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2250         if (err) {
2251                 dev_info(&vsi->back->pdev->dev,
2252                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2253                          ring->queue_index, pf_q, err);
2254                 return -ENOMEM;
2255         }
2256
2257         /* set the context in the HMC */
2258         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2259         if (err) {
2260                 dev_info(&vsi->back->pdev->dev,
2261                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2262                          ring->queue_index, pf_q, err);
2263                 return -ENOMEM;
2264         }
2265
2266         /* cache tail for quicker writes, and clear the reg before use */
2267         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2268         writel(0, ring->tail);
2269
2270         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2271
2272         return 0;
2273 }
2274
2275 /**
2276  * i40e_vsi_configure_tx - Configure the VSI for Tx
2277  * @vsi: VSI structure describing this set of rings and resources
2278  *
2279  * Configure the Tx VSI for operation.
2280  **/
2281 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2282 {
2283         int err = 0;
2284         u16 i;
2285
2286         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2287                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2288
2289         return err;
2290 }
2291
2292 /**
2293  * i40e_vsi_configure_rx - Configure the VSI for Rx
2294  * @vsi: the VSI being configured
2295  *
2296  * Configure the Rx VSI for operation.
2297  **/
2298 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2299 {
2300         int err = 0;
2301         u16 i;
2302
2303         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2304                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2305                                + ETH_FCS_LEN + VLAN_HLEN;
2306         else
2307                 vsi->max_frame = I40E_RXBUFFER_2048;
2308
2309         /* figure out correct receive buffer length */
2310         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2311                                     I40E_FLAG_RX_PS_ENABLED)) {
2312         case I40E_FLAG_RX_1BUF_ENABLED:
2313                 vsi->rx_hdr_len = 0;
2314                 vsi->rx_buf_len = vsi->max_frame;
2315                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2316                 break;
2317         case I40E_FLAG_RX_PS_ENABLED:
2318                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2319                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2320                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2321                 break;
2322         default:
2323                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2324                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2325                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2326                 break;
2327         }
2328
2329         /* round up for the chip's needs */
2330         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2331                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2332         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2333                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2334
2335         /* set up individual rings */
2336         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2337                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2338
2339         return err;
2340 }
2341
2342 /**
2343  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2344  * @vsi: ptr to the VSI
2345  **/
2346 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2347 {
2348         u16 qoffset, qcount;
2349         int i, n;
2350
2351         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2352                 return;
2353
2354         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2355                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2356                         continue;
2357
2358                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2359                 qcount = vsi->tc_config.tc_info[n].qcount;
2360                 for (i = qoffset; i < (qoffset + qcount); i++) {
2361                         struct i40e_ring *rx_ring = vsi->rx_rings[i];
2362                         struct i40e_ring *tx_ring = vsi->tx_rings[i];
2363                         rx_ring->dcb_tc = n;
2364                         tx_ring->dcb_tc = n;
2365                 }
2366         }
2367 }
2368
2369 /**
2370  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2371  * @vsi: ptr to the VSI
2372  **/
2373 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2374 {
2375         if (vsi->netdev)
2376                 i40e_set_rx_mode(vsi->netdev);
2377 }
2378
2379 /**
2380  * i40e_vsi_configure - Set up the VSI for action
2381  * @vsi: the VSI being configured
2382  **/
2383 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2384 {
2385         int err;
2386
2387         i40e_set_vsi_rx_mode(vsi);
2388         i40e_restore_vlan(vsi);
2389         i40e_vsi_config_dcb_rings(vsi);
2390         err = i40e_vsi_configure_tx(vsi);
2391         if (!err)
2392                 err = i40e_vsi_configure_rx(vsi);
2393
2394         return err;
2395 }
2396
2397 /**
2398  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2399  * @vsi: the VSI being configured
2400  **/
2401 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2402 {
2403         struct i40e_pf *pf = vsi->back;
2404         struct i40e_q_vector *q_vector;
2405         struct i40e_hw *hw = &pf->hw;
2406         u16 vector;
2407         int i, q;
2408         u32 val;
2409         u32 qp;
2410
2411         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2412          * and PFINT_LNKLSTn registers, e.g.:
2413          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2414          */
2415         qp = vsi->base_queue;
2416         vector = vsi->base_vector;
2417         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2418                 q_vector = vsi->q_vectors[i];
2419                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2420                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2421                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2422                      q_vector->rx.itr);
2423                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2424                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2425                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2426                      q_vector->tx.itr);
2427
2428                 /* Linked list for the queuepairs assigned to this vector */
2429                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2430                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2431                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2432                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2433                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2434                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2435                               (I40E_QUEUE_TYPE_TX
2436                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2437
2438                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2439
2440                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2441                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2442                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2443                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2444                               (I40E_QUEUE_TYPE_RX
2445                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2446
2447                         /* Terminate the linked list */
2448                         if (q == (q_vector->num_ringpairs - 1))
2449                                 val |= (I40E_QUEUE_END_OF_LIST
2450                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2451
2452                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2453                         qp++;
2454                 }
2455         }
2456
2457         i40e_flush(hw);
2458 }
2459
2460 /**
2461  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2462  * @hw: ptr to the hardware info
2463  **/
2464 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2465 {
2466         u32 val;
2467
2468         /* clear things first */
2469         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2470         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2471
2472         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2473               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2474               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2475               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2476               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2477               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2478               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2479               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2480               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2481
2482         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2483
2484         /* SW_ITR_IDX = 0, but don't change INTENA */
2485         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK |
2486                                         I40E_PFINT_DYN_CTLN_INTENA_MSK_MASK);
2487
2488         /* OTHER_ITR_IDX = 0 */
2489         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2490 }
2491
2492 /**
2493  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2494  * @vsi: the VSI being configured
2495  **/
2496 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2497 {
2498         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2499         struct i40e_pf *pf = vsi->back;
2500         struct i40e_hw *hw = &pf->hw;
2501         u32 val;
2502
2503         /* set the ITR configuration */
2504         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2505         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2506         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2507         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2508         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2509         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2510
2511         i40e_enable_misc_int_causes(hw);
2512
2513         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2514         wr32(hw, I40E_PFINT_LNKLST0, 0);
2515
2516         /* Associate the queue pair to the vector and enable the q int */
2517         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2518               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2519               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2520
2521         wr32(hw, I40E_QINT_RQCTL(0), val);
2522
2523         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2524               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2525               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2526
2527         wr32(hw, I40E_QINT_TQCTL(0), val);
2528         i40e_flush(hw);
2529 }
2530
2531 /**
2532  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2533  * @pf: board private structure
2534  **/
2535 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2536 {
2537         struct i40e_hw *hw = &pf->hw;
2538         u32 val;
2539
2540         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2541               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2542               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2543
2544         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2545         i40e_flush(hw);
2546 }
2547
2548 /**
2549  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2550  * @vsi: pointer to a vsi
2551  * @vector: enable a particular Hw Interrupt vector
2552  **/
2553 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2554 {
2555         struct i40e_pf *pf = vsi->back;
2556         struct i40e_hw *hw = &pf->hw;
2557         u32 val;
2558
2559         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2560               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2561               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2562         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2563         /* skip the flush */
2564 }
2565
2566 /**
2567  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2568  * @irq: interrupt number
2569  * @data: pointer to a q_vector
2570  **/
2571 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2572 {
2573         struct i40e_q_vector *q_vector = data;
2574
2575         if (!q_vector->tx.ring && !q_vector->rx.ring)
2576                 return IRQ_HANDLED;
2577
2578         napi_schedule(&q_vector->napi);
2579
2580         return IRQ_HANDLED;
2581 }
2582
2583 /**
2584  * i40e_fdir_clean_rings - Interrupt Handler for FDIR rings
2585  * @irq: interrupt number
2586  * @data: pointer to a q_vector
2587  **/
2588 static irqreturn_t i40e_fdir_clean_rings(int irq, void *data)
2589 {
2590         struct i40e_q_vector *q_vector = data;
2591
2592         if (!q_vector->tx.ring && !q_vector->rx.ring)
2593                 return IRQ_HANDLED;
2594
2595         pr_info("fdir ring cleaning needed\n");
2596
2597         return IRQ_HANDLED;
2598 }
2599
2600 /**
2601  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2602  * @vsi: the VSI being configured
2603  * @basename: name for the vector
2604  *
2605  * Allocates MSI-X vectors and requests interrupts from the kernel.
2606  **/
2607 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2608 {
2609         int q_vectors = vsi->num_q_vectors;
2610         struct i40e_pf *pf = vsi->back;
2611         int base = vsi->base_vector;
2612         int rx_int_idx = 0;
2613         int tx_int_idx = 0;
2614         int vector, err;
2615
2616         for (vector = 0; vector < q_vectors; vector++) {
2617                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2618
2619                 if (q_vector->tx.ring && q_vector->rx.ring) {
2620                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2621                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2622                         tx_int_idx++;
2623                 } else if (q_vector->rx.ring) {
2624                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2625                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2626                 } else if (q_vector->tx.ring) {
2627                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2628                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2629                 } else {
2630                         /* skip this unused q_vector */
2631                         continue;
2632                 }
2633                 err = request_irq(pf->msix_entries[base + vector].vector,
2634                                   vsi->irq_handler,
2635                                   0,
2636                                   q_vector->name,
2637                                   q_vector);
2638                 if (err) {
2639                         dev_info(&pf->pdev->dev,
2640                                  "%s: request_irq failed, error: %d\n",
2641                                  __func__, err);
2642                         goto free_queue_irqs;
2643                 }
2644                 /* assign the mask for this irq */
2645                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2646                                       &q_vector->affinity_mask);
2647         }
2648
2649         return 0;
2650
2651 free_queue_irqs:
2652         while (vector) {
2653                 vector--;
2654                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2655                                       NULL);
2656                 free_irq(pf->msix_entries[base + vector].vector,
2657                          &(vsi->q_vectors[vector]));
2658         }
2659         return err;
2660 }
2661
2662 /**
2663  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2664  * @vsi: the VSI being un-configured
2665  **/
2666 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2667 {
2668         struct i40e_pf *pf = vsi->back;
2669         struct i40e_hw *hw = &pf->hw;
2670         int base = vsi->base_vector;
2671         int i;
2672
2673         for (i = 0; i < vsi->num_queue_pairs; i++) {
2674                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2675                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2676         }
2677
2678         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2679                 for (i = vsi->base_vector;
2680                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2681                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2682
2683                 i40e_flush(hw);
2684                 for (i = 0; i < vsi->num_q_vectors; i++)
2685                         synchronize_irq(pf->msix_entries[i + base].vector);
2686         } else {
2687                 /* Legacy and MSI mode - this stops all interrupt handling */
2688                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2689                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2690                 i40e_flush(hw);
2691                 synchronize_irq(pf->pdev->irq);
2692         }
2693 }
2694
2695 /**
2696  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2697  * @vsi: the VSI being configured
2698  **/
2699 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2700 {
2701         struct i40e_pf *pf = vsi->back;
2702         int i;
2703
2704         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2705                 for (i = vsi->base_vector;
2706                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2707                         i40e_irq_dynamic_enable(vsi, i);
2708         } else {
2709                 i40e_irq_dynamic_enable_icr0(pf);
2710         }
2711
2712         i40e_flush(&pf->hw);
2713         return 0;
2714 }
2715
2716 /**
2717  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2718  * @pf: board private structure
2719  **/
2720 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2721 {
2722         /* Disable ICR 0 */
2723         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2724         i40e_flush(&pf->hw);
2725 }
2726
2727 /**
2728  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2729  * @irq: interrupt number
2730  * @data: pointer to a q_vector
2731  *
2732  * This is the handler used for all MSI/Legacy interrupts, and deals
2733  * with both queue and non-queue interrupts.  This is also used in
2734  * MSIX mode to handle the non-queue interrupts.
2735  **/
2736 static irqreturn_t i40e_intr(int irq, void *data)
2737 {
2738         struct i40e_pf *pf = (struct i40e_pf *)data;
2739         struct i40e_hw *hw = &pf->hw;
2740         u32 icr0, icr0_remaining;
2741         u32 val, ena_mask;
2742
2743         icr0 = rd32(hw, I40E_PFINT_ICR0);
2744
2745         val = rd32(hw, I40E_PFINT_DYN_CTL0);
2746         val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
2747         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2748
2749         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2750         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2751                 return IRQ_NONE;
2752
2753         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2754
2755         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2756         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2757
2758                 /* temporarily disable queue cause for NAPI processing */
2759                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2760                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2761                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2762
2763                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2764                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2765                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2766
2767                 if (!test_bit(__I40E_DOWN, &pf->state))
2768                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2769         }
2770
2771         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2772                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2773                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2774         }
2775
2776         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2777                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2778                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2779         }
2780
2781         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2782                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2783                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2784         }
2785
2786         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2787                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2788                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2789                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2790                 val = rd32(hw, I40E_GLGEN_RSTAT);
2791                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2792                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2793                 if (val & I40E_RESET_CORER)
2794                         pf->corer_count++;
2795                 else if (val & I40E_RESET_GLOBR)
2796                         pf->globr_count++;
2797                 else if (val & I40E_RESET_EMPR)
2798                         pf->empr_count++;
2799         }
2800
2801         /* If a critical error is pending we have no choice but to reset the
2802          * device.
2803          * Report and mask out any remaining unexpected interrupts.
2804          */
2805         icr0_remaining = icr0 & ena_mask;
2806         if (icr0_remaining) {
2807                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2808                          icr0_remaining);
2809                 if ((icr0_remaining & I40E_PFINT_ICR0_HMC_ERR_MASK) ||
2810                     (icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2811                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2812                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) ||
2813                     (icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) {
2814                         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2815                                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2816                         } else {
2817                                 dev_info(&pf->pdev->dev, "device will be reset\n");
2818                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2819                                 i40e_service_event_schedule(pf);
2820                         }
2821                 }
2822                 ena_mask &= ~icr0_remaining;
2823         }
2824
2825         /* re-enable interrupt causes */
2826         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2827         if (!test_bit(__I40E_DOWN, &pf->state)) {
2828                 i40e_service_event_schedule(pf);
2829                 i40e_irq_dynamic_enable_icr0(pf);
2830         }
2831
2832         return IRQ_HANDLED;
2833 }
2834
2835 /**
2836  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
2837  * @vsi: the VSI being configured
2838  * @v_idx: vector index
2839  * @qp_idx: queue pair index
2840  **/
2841 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
2842 {
2843         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
2844         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
2845         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
2846
2847         tx_ring->q_vector = q_vector;
2848         tx_ring->next = q_vector->tx.ring;
2849         q_vector->tx.ring = tx_ring;
2850         q_vector->tx.count++;
2851
2852         rx_ring->q_vector = q_vector;
2853         rx_ring->next = q_vector->rx.ring;
2854         q_vector->rx.ring = rx_ring;
2855         q_vector->rx.count++;
2856 }
2857
2858 /**
2859  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
2860  * @vsi: the VSI being configured
2861  *
2862  * This function maps descriptor rings to the queue-specific vectors
2863  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
2864  * one vector per queue pair, but on a constrained vector budget, we
2865  * group the queue pairs as "efficiently" as possible.
2866  **/
2867 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
2868 {
2869         int qp_remaining = vsi->num_queue_pairs;
2870         int q_vectors = vsi->num_q_vectors;
2871         int num_ringpairs;
2872         int v_start = 0;
2873         int qp_idx = 0;
2874
2875         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
2876          * group them so there are multiple queues per vector.
2877          */
2878         for (; v_start < q_vectors && qp_remaining; v_start++) {
2879                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
2880
2881                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
2882
2883                 q_vector->num_ringpairs = num_ringpairs;
2884
2885                 q_vector->rx.count = 0;
2886                 q_vector->tx.count = 0;
2887                 q_vector->rx.ring = NULL;
2888                 q_vector->tx.ring = NULL;
2889
2890                 while (num_ringpairs--) {
2891                         map_vector_to_qp(vsi, v_start, qp_idx);
2892                         qp_idx++;
2893                         qp_remaining--;
2894                 }
2895         }
2896 }
2897
2898 /**
2899  * i40e_vsi_request_irq - Request IRQ from the OS
2900  * @vsi: the VSI being configured
2901  * @basename: name for the vector
2902  **/
2903 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
2904 {
2905         struct i40e_pf *pf = vsi->back;
2906         int err;
2907
2908         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
2909                 err = i40e_vsi_request_irq_msix(vsi, basename);
2910         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
2911                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
2912                                   pf->misc_int_name, pf);
2913         else
2914                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
2915                                   pf->misc_int_name, pf);
2916
2917         if (err)
2918                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
2919
2920         return err;
2921 }
2922
2923 #ifdef CONFIG_NET_POLL_CONTROLLER
2924 /**
2925  * i40e_netpoll - A Polling 'interrupt'handler
2926  * @netdev: network interface device structure
2927  *
2928  * This is used by netconsole to send skbs without having to re-enable
2929  * interrupts.  It's not called while the normal interrupt routine is executing.
2930  **/
2931 static void i40e_netpoll(struct net_device *netdev)
2932 {
2933         struct i40e_netdev_priv *np = netdev_priv(netdev);
2934         struct i40e_vsi *vsi = np->vsi;
2935         struct i40e_pf *pf = vsi->back;
2936         int i;
2937
2938         /* if interface is down do nothing */
2939         if (test_bit(__I40E_DOWN, &vsi->state))
2940                 return;
2941
2942         pf->flags |= I40E_FLAG_IN_NETPOLL;
2943         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2944                 for (i = 0; i < vsi->num_q_vectors; i++)
2945                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
2946         } else {
2947                 i40e_intr(pf->pdev->irq, netdev);
2948         }
2949         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
2950 }
2951 #endif
2952
2953 /**
2954  * i40e_vsi_control_tx - Start or stop a VSI's rings
2955  * @vsi: the VSI being configured
2956  * @enable: start or stop the rings
2957  **/
2958 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
2959 {
2960         struct i40e_pf *pf = vsi->back;
2961         struct i40e_hw *hw = &pf->hw;
2962         int i, j, pf_q;
2963         u32 tx_reg;
2964
2965         pf_q = vsi->base_queue;
2966         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
2967                 j = 1000;
2968                 do {
2969                         usleep_range(1000, 2000);
2970                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
2971                 } while (j-- && ((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT)
2972                                ^ (tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT)) & 1);
2973
2974                 if (enable) {
2975                         /* is STAT set ? */
2976                         if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
2977                                 dev_info(&pf->pdev->dev,
2978                                          "Tx %d already enabled\n", i);
2979                                 continue;
2980                         }
2981                 } else {
2982                         /* is !STAT set ? */
2983                         if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
2984                                 dev_info(&pf->pdev->dev,
2985                                          "Tx %d already disabled\n", i);
2986                                 continue;
2987                         }
2988                 }
2989
2990                 /* turn on/off the queue */
2991                 if (enable)
2992                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK |
2993                                   I40E_QTX_ENA_QENA_STAT_MASK;
2994                 else
2995                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
2996
2997                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
2998
2999                 /* wait for the change to finish */
3000                 for (j = 0; j < 10; j++) {
3001                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3002                         if (enable) {
3003                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3004                                         break;
3005                         } else {
3006                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3007                                         break;
3008                         }
3009
3010                         udelay(10);
3011                 }
3012                 if (j >= 10) {
3013                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3014                                  pf_q, (enable ? "en" : "dis"));
3015                         return -ETIMEDOUT;
3016                 }
3017         }
3018
3019         return 0;
3020 }
3021
3022 /**
3023  * i40e_vsi_control_rx - Start or stop a VSI's rings
3024  * @vsi: the VSI being configured
3025  * @enable: start or stop the rings
3026  **/
3027 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3028 {
3029         struct i40e_pf *pf = vsi->back;
3030         struct i40e_hw *hw = &pf->hw;
3031         int i, j, pf_q;
3032         u32 rx_reg;
3033
3034         pf_q = vsi->base_queue;
3035         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3036                 j = 1000;
3037                 do {
3038                         usleep_range(1000, 2000);
3039                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3040                 } while (j-- && ((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT)
3041                                ^ (rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT)) & 1);
3042
3043                 if (enable) {
3044                         /* is STAT set ? */
3045                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3046                                 continue;
3047                 } else {
3048                         /* is !STAT set ? */
3049                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3050                                 continue;
3051                 }
3052
3053                 /* turn on/off the queue */
3054                 if (enable)
3055                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK |
3056                                   I40E_QRX_ENA_QENA_STAT_MASK;
3057                 else
3058                         rx_reg &= ~(I40E_QRX_ENA_QENA_REQ_MASK |
3059                                   I40E_QRX_ENA_QENA_STAT_MASK);
3060                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3061
3062                 /* wait for the change to finish */
3063                 for (j = 0; j < 10; j++) {
3064                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3065
3066                         if (enable) {
3067                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3068                                         break;
3069                         } else {
3070                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3071                                         break;
3072                         }
3073
3074                         udelay(10);
3075                 }
3076                 if (j >= 10) {
3077                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3078                                  pf_q, (enable ? "en" : "dis"));
3079                         return -ETIMEDOUT;
3080                 }
3081         }
3082
3083         return 0;
3084 }
3085
3086 /**
3087  * i40e_vsi_control_rings - Start or stop a VSI's rings
3088  * @vsi: the VSI being configured
3089  * @enable: start or stop the rings
3090  **/
3091 static int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3092 {
3093         int ret;
3094
3095         /* do rx first for enable and last for disable */
3096         if (request) {
3097                 ret = i40e_vsi_control_rx(vsi, request);
3098                 if (ret)
3099                         return ret;
3100                 ret = i40e_vsi_control_tx(vsi, request);
3101         } else {
3102                 ret = i40e_vsi_control_tx(vsi, request);
3103                 if (ret)
3104                         return ret;
3105                 ret = i40e_vsi_control_rx(vsi, request);
3106         }
3107
3108         return ret;
3109 }
3110
3111 /**
3112  * i40e_vsi_free_irq - Free the irq association with the OS
3113  * @vsi: the VSI being configured
3114  **/
3115 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3116 {
3117         struct i40e_pf *pf = vsi->back;
3118         struct i40e_hw *hw = &pf->hw;
3119         int base = vsi->base_vector;
3120         u32 val, qp;
3121         int i;
3122
3123         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3124                 if (!vsi->q_vectors)
3125                         return;
3126
3127                 for (i = 0; i < vsi->num_q_vectors; i++) {
3128                         u16 vector = i + base;
3129
3130                         /* free only the irqs that were actually requested */
3131                         if (vsi->q_vectors[i]->num_ringpairs == 0)
3132                                 continue;
3133
3134                         /* clear the affinity_mask in the IRQ descriptor */
3135                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3136                                               NULL);
3137                         free_irq(pf->msix_entries[vector].vector,
3138                                  vsi->q_vectors[i]);
3139
3140                         /* Tear down the interrupt queue link list
3141                          *
3142                          * We know that they come in pairs and always
3143                          * the Rx first, then the Tx.  To clear the
3144                          * link list, stick the EOL value into the
3145                          * next_q field of the registers.
3146                          */
3147                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3148                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3149                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3150                         val |= I40E_QUEUE_END_OF_LIST
3151                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3152                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3153
3154                         while (qp != I40E_QUEUE_END_OF_LIST) {
3155                                 u32 next;
3156
3157                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3158
3159                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3160                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3161                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3162                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3163
3164                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3165                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3166
3167                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3168
3169                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3170
3171                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3172                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3173
3174                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3175                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3176                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3177                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3178
3179                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3180                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3181
3182                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3183                                 qp = next;
3184                         }
3185                 }
3186         } else {
3187                 free_irq(pf->pdev->irq, pf);
3188
3189                 val = rd32(hw, I40E_PFINT_LNKLST0);
3190                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3191                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3192                 val |= I40E_QUEUE_END_OF_LIST
3193                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3194                 wr32(hw, I40E_PFINT_LNKLST0, val);
3195
3196                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3197                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3198                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3199                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3200                          I40E_QINT_RQCTL_INTEVENT_MASK);
3201
3202                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3203                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3204
3205                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3206
3207                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3208
3209                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3210                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3211                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3212                          I40E_QINT_TQCTL_INTEVENT_MASK);
3213
3214                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3215                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3216
3217                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3218         }
3219 }
3220
3221 /**
3222  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3223  * @vsi: the VSI being configured
3224  * @v_idx: Index of vector to be freed
3225  *
3226  * This function frees the memory allocated to the q_vector.  In addition if
3227  * NAPI is enabled it will delete any references to the NAPI struct prior
3228  * to freeing the q_vector.
3229  **/
3230 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3231 {
3232         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3233         struct i40e_ring *ring;
3234
3235         if (!q_vector)
3236                 return;
3237
3238         /* disassociate q_vector from rings */
3239         i40e_for_each_ring(ring, q_vector->tx)
3240                 ring->q_vector = NULL;
3241
3242         i40e_for_each_ring(ring, q_vector->rx)
3243                 ring->q_vector = NULL;
3244
3245         /* only VSI w/ an associated netdev is set up w/ NAPI */
3246         if (vsi->netdev)
3247                 netif_napi_del(&q_vector->napi);
3248
3249         vsi->q_vectors[v_idx] = NULL;
3250
3251         kfree_rcu(q_vector, rcu);
3252 }
3253
3254 /**
3255  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3256  * @vsi: the VSI being un-configured
3257  *
3258  * This frees the memory allocated to the q_vectors and
3259  * deletes references to the NAPI struct.
3260  **/
3261 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3262 {
3263         int v_idx;
3264
3265         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3266                 i40e_free_q_vector(vsi, v_idx);
3267 }
3268
3269 /**
3270  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3271  * @pf: board private structure
3272  **/
3273 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3274 {
3275         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3276         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3277                 pci_disable_msix(pf->pdev);
3278                 kfree(pf->msix_entries);
3279                 pf->msix_entries = NULL;
3280         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3281                 pci_disable_msi(pf->pdev);
3282         }
3283         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3284 }
3285
3286 /**
3287  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3288  * @pf: board private structure
3289  *
3290  * We go through and clear interrupt specific resources and reset the structure
3291  * to pre-load conditions
3292  **/
3293 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3294 {
3295         int i;
3296
3297         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3298         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3299                 if (pf->vsi[i])
3300                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3301         i40e_reset_interrupt_capability(pf);
3302 }
3303
3304 /**
3305  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3306  * @vsi: the VSI being configured
3307  **/
3308 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3309 {
3310         int q_idx;
3311
3312         if (!vsi->netdev)
3313                 return;
3314
3315         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3316                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3317 }
3318
3319 /**
3320  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3321  * @vsi: the VSI being configured
3322  **/
3323 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3324 {
3325         int q_idx;
3326
3327         if (!vsi->netdev)
3328                 return;
3329
3330         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3331                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3332 }
3333
3334 /**
3335  * i40e_quiesce_vsi - Pause a given VSI
3336  * @vsi: the VSI being paused
3337  **/
3338 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3339 {
3340         if (test_bit(__I40E_DOWN, &vsi->state))
3341                 return;
3342
3343         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3344         if (vsi->netdev && netif_running(vsi->netdev)) {
3345                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3346         } else {
3347                 set_bit(__I40E_DOWN, &vsi->state);
3348                 i40e_down(vsi);
3349         }
3350 }
3351
3352 /**
3353  * i40e_unquiesce_vsi - Resume a given VSI
3354  * @vsi: the VSI being resumed
3355  **/
3356 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3357 {
3358         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3359                 return;
3360
3361         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3362         if (vsi->netdev && netif_running(vsi->netdev))
3363                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3364         else
3365                 i40e_up(vsi);   /* this clears the DOWN bit */
3366 }
3367
3368 /**
3369  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3370  * @pf: the PF
3371  **/
3372 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3373 {
3374         int v;
3375
3376         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3377                 if (pf->vsi[v])
3378                         i40e_quiesce_vsi(pf->vsi[v]);
3379         }
3380 }
3381
3382 /**
3383  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3384  * @pf: the PF
3385  **/
3386 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3387 {
3388         int v;
3389
3390         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3391                 if (pf->vsi[v])
3392                         i40e_unquiesce_vsi(pf->vsi[v]);
3393         }
3394 }
3395
3396 /**
3397  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3398  * @dcbcfg: the corresponding DCBx configuration structure
3399  *
3400  * Return the number of TCs from given DCBx configuration
3401  **/
3402 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3403 {
3404         u8 num_tc = 0;
3405         int i;
3406
3407         /* Scan the ETS Config Priority Table to find
3408          * traffic class enabled for a given priority
3409          * and use the traffic class index to get the
3410          * number of traffic classes enabled
3411          */
3412         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3413                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3414                         num_tc = dcbcfg->etscfg.prioritytable[i];
3415         }
3416
3417         /* Traffic class index starts from zero so
3418          * increment to return the actual count
3419          */
3420         return num_tc + 1;
3421 }
3422
3423 /**
3424  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3425  * @dcbcfg: the corresponding DCBx configuration structure
3426  *
3427  * Query the current DCB configuration and return the number of
3428  * traffic classes enabled from the given DCBX config
3429  **/
3430 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3431 {
3432         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3433         u8 enabled_tc = 1;
3434         u8 i;
3435
3436         for (i = 0; i < num_tc; i++)
3437                 enabled_tc |= 1 << i;
3438
3439         return enabled_tc;
3440 }
3441
3442 /**
3443  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3444  * @pf: PF being queried
3445  *
3446  * Return number of traffic classes enabled for the given PF
3447  **/
3448 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3449 {
3450         struct i40e_hw *hw = &pf->hw;
3451         u8 i, enabled_tc;
3452         u8 num_tc = 0;
3453         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3454
3455         /* If DCB is not enabled then always in single TC */
3456         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3457                 return 1;
3458
3459         /* MFP mode return count of enabled TCs for this PF */
3460         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3461                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3462                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3463                         if (enabled_tc & (1 << i))
3464                                 num_tc++;
3465                 }
3466                 return num_tc;
3467         }
3468
3469         /* SFP mode will be enabled for all TCs on port */
3470         return i40e_dcb_get_num_tc(dcbcfg);
3471 }
3472
3473 /**
3474  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3475  * @pf: PF being queried
3476  *
3477  * Return a bitmap for first enabled traffic class for this PF.
3478  **/
3479 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3480 {
3481         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3482         u8 i = 0;
3483
3484         if (!enabled_tc)
3485                 return 0x1; /* TC0 */
3486
3487         /* Find the first enabled TC */
3488         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3489                 if (enabled_tc & (1 << i))
3490                         break;
3491         }
3492
3493         return 1 << i;
3494 }
3495
3496 /**
3497  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3498  * @pf: PF being queried
3499  *
3500  * Return a bitmap for enabled traffic classes for this PF.
3501  **/
3502 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3503 {
3504         /* If DCB is not enabled for this PF then just return default TC */
3505         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3506                 return i40e_pf_get_default_tc(pf);
3507
3508         /* MFP mode will have enabled TCs set by FW */
3509         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3510                 return pf->hw.func_caps.enabled_tcmap;
3511
3512         /* SFP mode we want PF to be enabled for all TCs */
3513         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3514 }
3515
3516 /**
3517  * i40e_vsi_get_bw_info - Query VSI BW Information
3518  * @vsi: the VSI being queried
3519  *
3520  * Returns 0 on success, negative value on failure
3521  **/
3522 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3523 {
3524         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3525         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3526         struct i40e_pf *pf = vsi->back;
3527         struct i40e_hw *hw = &pf->hw;
3528         i40e_status aq_ret;
3529         u32 tc_bw_max;
3530         int i;
3531
3532         /* Get the VSI level BW configuration */
3533         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3534         if (aq_ret) {
3535                 dev_info(&pf->pdev->dev,
3536                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3537                          aq_ret, pf->hw.aq.asq_last_status);
3538                 return -EINVAL;
3539         }
3540
3541         /* Get the VSI level BW configuration per TC */
3542         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3543                                                   NULL);
3544         if (aq_ret) {
3545                 dev_info(&pf->pdev->dev,
3546                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3547                          aq_ret, pf->hw.aq.asq_last_status);
3548                 return -EINVAL;
3549         }
3550
3551         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3552                 dev_info(&pf->pdev->dev,
3553                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3554                          bw_config.tc_valid_bits,
3555                          bw_ets_config.tc_valid_bits);
3556                 /* Still continuing */
3557         }
3558
3559         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3560         vsi->bw_max_quanta = bw_config.max_bw;
3561         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3562                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3563         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3564                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3565                 vsi->bw_ets_limit_credits[i] =
3566                                         le16_to_cpu(bw_ets_config.credits[i]);
3567                 /* 3 bits out of 4 for each TC */
3568                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3569         }
3570
3571         return 0;
3572 }
3573
3574 /**
3575  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3576  * @vsi: the VSI being configured
3577  * @enabled_tc: TC bitmap
3578  * @bw_credits: BW shared credits per TC
3579  *
3580  * Returns 0 on success, negative value on failure
3581  **/
3582 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3583                                        u8 *bw_share)
3584 {
3585         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3586         i40e_status aq_ret;
3587         int i;
3588
3589         bw_data.tc_valid_bits = enabled_tc;
3590         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3591                 bw_data.tc_bw_credits[i] = bw_share[i];
3592
3593         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3594                                           NULL);
3595         if (aq_ret) {
3596                 dev_info(&vsi->back->pdev->dev,
3597                          "%s: AQ command Config VSI BW allocation per TC failed = %d\n",
3598                          __func__, vsi->back->hw.aq.asq_last_status);
3599                 return -EINVAL;
3600         }
3601
3602         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3603                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3604
3605         return 0;
3606 }
3607
3608 /**
3609  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3610  * @vsi: the VSI being configured
3611  * @enabled_tc: TC map to be enabled
3612  *
3613  **/
3614 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3615 {
3616         struct net_device *netdev = vsi->netdev;
3617         struct i40e_pf *pf = vsi->back;
3618         struct i40e_hw *hw = &pf->hw;
3619         u8 netdev_tc = 0;
3620         int i;
3621         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3622
3623         if (!netdev)
3624                 return;
3625
3626         if (!enabled_tc) {
3627                 netdev_reset_tc(netdev);
3628                 return;
3629         }
3630
3631         /* Set up actual enabled TCs on the VSI */
3632         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3633                 return;
3634
3635         /* set per TC queues for the VSI */
3636         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3637                 /* Only set TC queues for enabled tcs
3638                  *
3639                  * e.g. For a VSI that has TC0 and TC3 enabled the
3640                  * enabled_tc bitmap would be 0x00001001; the driver
3641                  * will set the numtc for netdev as 2 that will be
3642                  * referenced by the netdev layer as TC 0 and 1.
3643                  */
3644                 if (vsi->tc_config.enabled_tc & (1 << i))
3645                         netdev_set_tc_queue(netdev,
3646                                         vsi->tc_config.tc_info[i].netdev_tc,
3647                                         vsi->tc_config.tc_info[i].qcount,
3648                                         vsi->tc_config.tc_info[i].qoffset);
3649         }
3650
3651         /* Assign UP2TC map for the VSI */
3652         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3653                 /* Get the actual TC# for the UP */
3654                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3655                 /* Get the mapped netdev TC# for the UP */
3656                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3657                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3658         }
3659 }
3660
3661 /**
3662  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3663  * @vsi: the VSI being configured
3664  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3665  **/
3666 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3667                                       struct i40e_vsi_context *ctxt)
3668 {
3669         /* copy just the sections touched not the entire info
3670          * since not all sections are valid as returned by
3671          * update vsi params
3672          */
3673         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3674         memcpy(&vsi->info.queue_mapping,
3675                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3676         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3677                sizeof(vsi->info.tc_mapping));
3678 }
3679
3680 /**
3681  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3682  * @vsi: VSI to be configured
3683  * @enabled_tc: TC bitmap
3684  *
3685  * This configures a particular VSI for TCs that are mapped to the
3686  * given TC bitmap. It uses default bandwidth share for TCs across
3687  * VSIs to configure TC for a particular VSI.
3688  *
3689  * NOTE:
3690  * It is expected that the VSI queues have been quisced before calling
3691  * this function.
3692  **/
3693 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3694 {
3695         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3696         struct i40e_vsi_context ctxt;
3697         int ret = 0;
3698         int i;
3699
3700         /* Check if enabled_tc is same as existing or new TCs */
3701         if (vsi->tc_config.enabled_tc == enabled_tc)
3702                 return ret;
3703
3704         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3705         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3706                 if (enabled_tc & (1 << i))
3707                         bw_share[i] = 1;
3708         }
3709
3710         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3711         if (ret) {
3712                 dev_info(&vsi->back->pdev->dev,
3713                          "Failed configuring TC map %d for VSI %d\n",
3714                          enabled_tc, vsi->seid);
3715                 goto out;
3716         }
3717
3718         /* Update Queue Pairs Mapping for currently enabled UPs */
3719         ctxt.seid = vsi->seid;
3720         ctxt.pf_num = vsi->back->hw.pf_id;
3721         ctxt.vf_num = 0;
3722         ctxt.uplink_seid = vsi->uplink_seid;
3723         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3724         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3725
3726         /* Update the VSI after updating the VSI queue-mapping information */
3727         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3728         if (ret) {
3729                 dev_info(&vsi->back->pdev->dev,
3730                          "update vsi failed, aq_err=%d\n",
3731                          vsi->back->hw.aq.asq_last_status);
3732                 goto out;
3733         }
3734         /* update the local VSI info with updated queue map */
3735         i40e_vsi_update_queue_map(vsi, &ctxt);
3736         vsi->info.valid_sections = 0;
3737
3738         /* Update current VSI BW information */
3739         ret = i40e_vsi_get_bw_info(vsi);
3740         if (ret) {
3741                 dev_info(&vsi->back->pdev->dev,
3742                          "Failed updating vsi bw info, aq_err=%d\n",
3743                          vsi->back->hw.aq.asq_last_status);
3744                 goto out;
3745         }
3746
3747         /* Update the netdev TC setup */
3748         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3749 out:
3750         return ret;
3751 }
3752
3753 /**
3754  * i40e_up_complete - Finish the last steps of bringing up a connection
3755  * @vsi: the VSI being configured
3756  **/
3757 static int i40e_up_complete(struct i40e_vsi *vsi)
3758 {
3759         struct i40e_pf *pf = vsi->back;
3760         int err;
3761
3762         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3763                 i40e_vsi_configure_msix(vsi);
3764         else
3765                 i40e_configure_msi_and_legacy(vsi);
3766
3767         /* start rings */
3768         err = i40e_vsi_control_rings(vsi, true);
3769         if (err)
3770                 return err;
3771
3772         clear_bit(__I40E_DOWN, &vsi->state);
3773         i40e_napi_enable_all(vsi);
3774         i40e_vsi_enable_irq(vsi);
3775
3776         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
3777             (vsi->netdev)) {
3778                 netdev_info(vsi->netdev, "NIC Link is Up\n");
3779                 netif_tx_start_all_queues(vsi->netdev);
3780                 netif_carrier_on(vsi->netdev);
3781         } else if (vsi->netdev) {
3782                 netdev_info(vsi->netdev, "NIC Link is Down\n");
3783         }
3784         i40e_service_event_schedule(pf);
3785
3786         return 0;
3787 }
3788
3789 /**
3790  * i40e_vsi_reinit_locked - Reset the VSI
3791  * @vsi: the VSI being configured
3792  *
3793  * Rebuild the ring structs after some configuration
3794  * has changed, e.g. MTU size.
3795  **/
3796 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
3797 {
3798         struct i40e_pf *pf = vsi->back;
3799
3800         WARN_ON(in_interrupt());
3801         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
3802                 usleep_range(1000, 2000);
3803         i40e_down(vsi);
3804
3805         /* Give a VF some time to respond to the reset.  The
3806          * two second wait is based upon the watchdog cycle in
3807          * the VF driver.
3808          */
3809         if (vsi->type == I40E_VSI_SRIOV)
3810                 msleep(2000);
3811         i40e_up(vsi);
3812         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
3813 }
3814
3815 /**
3816  * i40e_up - Bring the connection back up after being down
3817  * @vsi: the VSI being configured
3818  **/
3819 int i40e_up(struct i40e_vsi *vsi)
3820 {
3821         int err;
3822
3823         err = i40e_vsi_configure(vsi);
3824         if (!err)
3825                 err = i40e_up_complete(vsi);
3826
3827         return err;
3828 }
3829
3830 /**
3831  * i40e_down - Shutdown the connection processing
3832  * @vsi: the VSI being stopped
3833  **/
3834 void i40e_down(struct i40e_vsi *vsi)
3835 {
3836         int i;
3837
3838         /* It is assumed that the caller of this function
3839          * sets the vsi->state __I40E_DOWN bit.
3840          */
3841         if (vsi->netdev) {
3842                 netif_carrier_off(vsi->netdev);
3843                 netif_tx_disable(vsi->netdev);
3844         }
3845         i40e_vsi_disable_irq(vsi);
3846         i40e_vsi_control_rings(vsi, false);
3847         i40e_napi_disable_all(vsi);
3848
3849         for (i = 0; i < vsi->num_queue_pairs; i++) {
3850                 i40e_clean_tx_ring(vsi->tx_rings[i]);
3851                 i40e_clean_rx_ring(vsi->rx_rings[i]);
3852         }
3853 }
3854
3855 /**
3856  * i40e_setup_tc - configure multiple traffic classes
3857  * @netdev: net device to configure
3858  * @tc: number of traffic classes to enable
3859  **/
3860 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
3861 {
3862         struct i40e_netdev_priv *np = netdev_priv(netdev);
3863         struct i40e_vsi *vsi = np->vsi;
3864         struct i40e_pf *pf = vsi->back;
3865         u8 enabled_tc = 0;
3866         int ret = -EINVAL;
3867         int i;
3868
3869         /* Check if DCB enabled to continue */
3870         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
3871                 netdev_info(netdev, "DCB is not enabled for adapter\n");
3872                 goto exit;
3873         }
3874
3875         /* Check if MFP enabled */
3876         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3877                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
3878                 goto exit;
3879         }
3880
3881         /* Check whether tc count is within enabled limit */
3882         if (tc > i40e_pf_get_num_tc(pf)) {
3883                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
3884                 goto exit;
3885         }
3886
3887         /* Generate TC map for number of tc requested */
3888         for (i = 0; i < tc; i++)
3889                 enabled_tc |= (1 << i);
3890
3891         /* Requesting same TC configuration as already enabled */
3892         if (enabled_tc == vsi->tc_config.enabled_tc)
3893                 return 0;
3894
3895         /* Quiesce VSI queues */
3896         i40e_quiesce_vsi(vsi);
3897
3898         /* Configure VSI for enabled TCs */
3899         ret = i40e_vsi_config_tc(vsi, enabled_tc);
3900         if (ret) {
3901                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
3902                             vsi->seid);
3903                 goto exit;
3904         }
3905
3906         /* Unquiesce VSI */
3907         i40e_unquiesce_vsi(vsi);
3908
3909 exit:
3910         return ret;
3911 }
3912
3913 /**
3914  * i40e_open - Called when a network interface is made active
3915  * @netdev: network interface device structure
3916  *
3917  * The open entry point is called when a network interface is made
3918  * active by the system (IFF_UP).  At this point all resources needed
3919  * for transmit and receive operations are allocated, the interrupt
3920  * handler is registered with the OS, the netdev watchdog subtask is
3921  * enabled, and the stack is notified that the interface is ready.
3922  *
3923  * Returns 0 on success, negative value on failure
3924  **/
3925 static int i40e_open(struct net_device *netdev)
3926 {
3927         struct i40e_netdev_priv *np = netdev_priv(netdev);
3928         struct i40e_vsi *vsi = np->vsi;
3929         struct i40e_pf *pf = vsi->back;
3930         char int_name[IFNAMSIZ];
3931         int err;
3932
3933         /* disallow open during test */
3934         if (test_bit(__I40E_TESTING, &pf->state))
3935                 return -EBUSY;
3936
3937         netif_carrier_off(netdev);
3938
3939         /* allocate descriptors */
3940         err = i40e_vsi_setup_tx_resources(vsi);
3941         if (err)
3942                 goto err_setup_tx;
3943         err = i40e_vsi_setup_rx_resources(vsi);
3944         if (err)
3945                 goto err_setup_rx;
3946
3947         err = i40e_vsi_configure(vsi);
3948         if (err)
3949                 goto err_setup_rx;
3950
3951         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
3952                  dev_driver_string(&pf->pdev->dev), netdev->name);
3953         err = i40e_vsi_request_irq(vsi, int_name);
3954         if (err)
3955                 goto err_setup_rx;
3956
3957         err = i40e_up_complete(vsi);
3958         if (err)
3959                 goto err_up_complete;
3960
3961         if ((vsi->type == I40E_VSI_MAIN) || (vsi->type == I40E_VSI_VMDQ2)) {
3962                 err = i40e_aq_set_vsi_broadcast(&pf->hw, vsi->seid, true, NULL);
3963                 if (err)
3964                         netdev_info(netdev,
3965                                     "couldn't set broadcast err %d aq_err %d\n",
3966                                     err, pf->hw.aq.asq_last_status);
3967         }
3968
3969         return 0;
3970
3971 err_up_complete:
3972         i40e_down(vsi);
3973         i40e_vsi_free_irq(vsi);
3974 err_setup_rx:
3975         i40e_vsi_free_rx_resources(vsi);
3976 err_setup_tx:
3977         i40e_vsi_free_tx_resources(vsi);
3978         if (vsi == pf->vsi[pf->lan_vsi])
3979                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
3980
3981         return err;
3982 }
3983
3984 /**
3985  * i40e_close - Disables a network interface
3986  * @netdev: network interface device structure
3987  *
3988  * The close entry point is called when an interface is de-activated
3989  * by the OS.  The hardware is still under the driver's control, but
3990  * this netdev interface is disabled.
3991  *
3992  * Returns 0, this is not allowed to fail
3993  **/
3994 static int i40e_close(struct net_device *netdev)
3995 {
3996         struct i40e_netdev_priv *np = netdev_priv(netdev);
3997         struct i40e_vsi *vsi = np->vsi;
3998
3999         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4000                 return 0;
4001
4002         i40e_down(vsi);
4003         i40e_vsi_free_irq(vsi);
4004
4005         i40e_vsi_free_tx_resources(vsi);
4006         i40e_vsi_free_rx_resources(vsi);
4007
4008         return 0;
4009 }
4010
4011 /**
4012  * i40e_do_reset - Start a PF or Core Reset sequence
4013  * @pf: board private structure
4014  * @reset_flags: which reset is requested
4015  *
4016  * The essential difference in resets is that the PF Reset
4017  * doesn't clear the packet buffers, doesn't reset the PE
4018  * firmware, and doesn't bother the other PFs on the chip.
4019  **/
4020 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4021 {
4022         u32 val;
4023
4024         WARN_ON(in_interrupt());
4025
4026         /* do the biggest reset indicated */
4027         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4028
4029                 /* Request a Global Reset
4030                  *
4031                  * This will start the chip's countdown to the actual full
4032                  * chip reset event, and a warning interrupt to be sent
4033                  * to all PFs, including the requestor.  Our handler
4034                  * for the warning interrupt will deal with the shutdown
4035                  * and recovery of the switch setup.
4036                  */
4037                 dev_info(&pf->pdev->dev, "GlobalR requested\n");
4038                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4039                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4040                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4041
4042         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4043
4044                 /* Request a Core Reset
4045                  *
4046                  * Same as Global Reset, except does *not* include the MAC/PHY
4047                  */
4048                 dev_info(&pf->pdev->dev, "CoreR requested\n");
4049                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4050                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4051                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4052                 i40e_flush(&pf->hw);
4053
4054         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4055
4056                 /* Request a PF Reset
4057                  *
4058                  * Resets only the PF-specific registers
4059                  *
4060                  * This goes directly to the tear-down and rebuild of
4061                  * the switch, since we need to do all the recovery as
4062                  * for the Core Reset.
4063                  */
4064                 dev_info(&pf->pdev->dev, "PFR requested\n");
4065                 i40e_handle_reset_warning(pf);
4066
4067         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4068                 int v;
4069
4070                 /* Find the VSI(s) that requested a re-init */
4071                 dev_info(&pf->pdev->dev,
4072                          "VSI reinit requested\n");
4073                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4074                         struct i40e_vsi *vsi = pf->vsi[v];
4075                         if (vsi != NULL &&
4076                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4077                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4078                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4079                         }
4080                 }
4081
4082                 /* no further action needed, so return now */
4083                 return;
4084         } else {
4085                 dev_info(&pf->pdev->dev,
4086                          "bad reset request 0x%08x\n", reset_flags);
4087                 return;
4088         }
4089 }
4090
4091 /**
4092  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4093  * @pf: board private structure
4094  * @e: event info posted on ARQ
4095  *
4096  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4097  * and VF queues
4098  **/
4099 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4100                                            struct i40e_arq_event_info *e)
4101 {
4102         struct i40e_aqc_lan_overflow *data =
4103                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4104         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4105         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4106         struct i40e_hw *hw = &pf->hw;
4107         struct i40e_vf *vf;
4108         u16 vf_id;
4109
4110         dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n",
4111                  __func__, queue, qtx_ctl);
4112
4113         /* Queue belongs to VF, find the VF and issue VF reset */
4114         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4115             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4116                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4117                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4118                 vf_id -= hw->func_caps.vf_base_id;
4119                 vf = &pf->vf[vf_id];
4120                 i40e_vc_notify_vf_reset(vf);
4121                 /* Allow VF to process pending reset notification */
4122                 msleep(20);
4123                 i40e_reset_vf(vf, false);
4124         }
4125 }
4126
4127 /**
4128  * i40e_service_event_complete - Finish up the service event
4129  * @pf: board private structure
4130  **/
4131 static void i40e_service_event_complete(struct i40e_pf *pf)
4132 {
4133         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4134
4135         /* flush memory to make sure state is correct before next watchog */
4136         smp_mb__before_clear_bit();
4137         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4138 }
4139
4140 /**
4141  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4142  * @pf: board private structure
4143  **/
4144 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4145 {
4146         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4147                 return;
4148
4149         pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4150
4151         /* if interface is down do nothing */
4152         if (test_bit(__I40E_DOWN, &pf->state))
4153                 return;
4154 }
4155
4156 /**
4157  * i40e_vsi_link_event - notify VSI of a link event
4158  * @vsi: vsi to be notified
4159  * @link_up: link up or down
4160  **/
4161 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4162 {
4163         if (!vsi)
4164                 return;
4165
4166         switch (vsi->type) {
4167         case I40E_VSI_MAIN:
4168                 if (!vsi->netdev || !vsi->netdev_registered)
4169                         break;
4170
4171                 if (link_up) {
4172                         netif_carrier_on(vsi->netdev);
4173                         netif_tx_wake_all_queues(vsi->netdev);
4174                 } else {
4175                         netif_carrier_off(vsi->netdev);
4176                         netif_tx_stop_all_queues(vsi->netdev);
4177                 }
4178                 break;
4179
4180         case I40E_VSI_SRIOV:
4181                 break;
4182
4183         case I40E_VSI_VMDQ2:
4184         case I40E_VSI_CTRL:
4185         case I40E_VSI_MIRROR:
4186         default:
4187                 /* there is no notification for other VSIs */
4188                 break;
4189         }
4190 }
4191
4192 /**
4193  * i40e_veb_link_event - notify elements on the veb of a link event
4194  * @veb: veb to be notified
4195  * @link_up: link up or down
4196  **/
4197 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4198 {
4199         struct i40e_pf *pf;
4200         int i;
4201
4202         if (!veb || !veb->pf)
4203                 return;
4204         pf = veb->pf;
4205
4206         /* depth first... */
4207         for (i = 0; i < I40E_MAX_VEB; i++)
4208                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4209                         i40e_veb_link_event(pf->veb[i], link_up);
4210
4211         /* ... now the local VSIs */
4212         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4213                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4214                         i40e_vsi_link_event(pf->vsi[i], link_up);
4215 }
4216
4217 /**
4218  * i40e_link_event - Update netif_carrier status
4219  * @pf: board private structure
4220  **/
4221 static void i40e_link_event(struct i40e_pf *pf)
4222 {
4223         bool new_link, old_link;
4224
4225         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4226         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4227
4228         if (new_link == old_link)
4229                 return;
4230
4231         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4232                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4233                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4234
4235         /* Notify the base of the switch tree connected to
4236          * the link.  Floating VEBs are not notified.
4237          */
4238         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4239                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4240         else
4241                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4242
4243         if (pf->vf)
4244                 i40e_vc_notify_link_state(pf);
4245 }
4246
4247 /**
4248  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4249  * @pf: board private structure
4250  *
4251  * Set the per-queue flags to request a check for stuck queues in the irq
4252  * clean functions, then force interrupts to be sure the irq clean is called.
4253  **/
4254 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4255 {
4256         int i, v;
4257
4258         /* If we're down or resetting, just bail */
4259         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4260                 return;
4261
4262         /* for each VSI/netdev
4263          *     for each Tx queue
4264          *         set the check flag
4265          *     for each q_vector
4266          *         force an interrupt
4267          */
4268         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4269                 struct i40e_vsi *vsi = pf->vsi[v];
4270                 int armed = 0;
4271
4272                 if (!pf->vsi[v] ||
4273                     test_bit(__I40E_DOWN, &vsi->state) ||
4274                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4275                         continue;
4276
4277                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4278                         set_check_for_tx_hang(vsi->tx_rings[i]);
4279                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4280                                      &vsi->tx_rings[i]->state))
4281                                 armed++;
4282                 }
4283
4284                 if (armed) {
4285                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4286                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4287                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4288                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4289                         } else {
4290                                 u16 vec = vsi->base_vector - 1;
4291                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4292                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4293                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4294                                         wr32(&vsi->back->hw,
4295                                              I40E_PFINT_DYN_CTLN(vec), val);
4296                         }
4297                         i40e_flush(&vsi->back->hw);
4298                 }
4299         }
4300 }
4301
4302 /**
4303  * i40e_watchdog_subtask - Check and bring link up
4304  * @pf: board private structure
4305  **/
4306 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4307 {
4308         int i;
4309
4310         /* if interface is down do nothing */
4311         if (test_bit(__I40E_DOWN, &pf->state) ||
4312             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4313                 return;
4314
4315         /* Update the stats for active netdevs so the network stack
4316          * can look at updated numbers whenever it cares to
4317          */
4318         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4319                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4320                         i40e_update_stats(pf->vsi[i]);
4321
4322         /* Update the stats for the active switching components */
4323         for (i = 0; i < I40E_MAX_VEB; i++)
4324                 if (pf->veb[i])
4325                         i40e_update_veb_stats(pf->veb[i]);
4326 }
4327
4328 /**
4329  * i40e_reset_subtask - Set up for resetting the device and driver
4330  * @pf: board private structure
4331  **/
4332 static void i40e_reset_subtask(struct i40e_pf *pf)
4333 {
4334         u32 reset_flags = 0;
4335
4336         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4337                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4338                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4339         }
4340         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4341                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4342                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4343         }
4344         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4345                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4346                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4347         }
4348         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4349                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4350                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4351         }
4352
4353         /* If there's a recovery already waiting, it takes
4354          * precedence before starting a new reset sequence.
4355          */
4356         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4357                 i40e_handle_reset_warning(pf);
4358                 return;
4359         }
4360
4361         /* If we're already down or resetting, just bail */
4362         if (reset_flags &&
4363             !test_bit(__I40E_DOWN, &pf->state) &&
4364             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4365                 i40e_do_reset(pf, reset_flags);
4366 }
4367
4368 /**
4369  * i40e_handle_link_event - Handle link event
4370  * @pf: board private structure
4371  * @e: event info posted on ARQ
4372  **/
4373 static void i40e_handle_link_event(struct i40e_pf *pf,
4374                                    struct i40e_arq_event_info *e)
4375 {
4376         struct i40e_hw *hw = &pf->hw;
4377         struct i40e_aqc_get_link_status *status =
4378                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4379         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4380
4381         /* save off old link status information */
4382         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4383                sizeof(pf->hw.phy.link_info_old));
4384
4385         /* update link status */
4386         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4387         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4388         hw_link_info->link_info = status->link_info;
4389         hw_link_info->an_info = status->an_info;
4390         hw_link_info->ext_info = status->ext_info;
4391         hw_link_info->lse_enable =
4392                 le16_to_cpu(status->command_flags) &
4393                             I40E_AQ_LSE_ENABLE;
4394
4395         /* process the event */
4396         i40e_link_event(pf);
4397
4398         /* Do a new status request to re-enable LSE reporting
4399          * and load new status information into the hw struct,
4400          * then see if the status changed while processing the
4401          * initial event.
4402          */
4403         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
4404         i40e_link_event(pf);
4405 }
4406
4407 /**
4408  * i40e_clean_adminq_subtask - Clean the AdminQ rings
4409  * @pf: board private structure
4410  **/
4411 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
4412 {
4413         struct i40e_arq_event_info event;
4414         struct i40e_hw *hw = &pf->hw;
4415         u16 pending, i = 0;
4416         i40e_status ret;
4417         u16 opcode;
4418         u32 val;
4419
4420         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
4421                 return;
4422
4423         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
4424         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
4425         if (!event.msg_buf)
4426                 return;
4427
4428         do {
4429                 ret = i40e_clean_arq_element(hw, &event, &pending);
4430                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
4431                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
4432                         break;
4433                 } else if (ret) {
4434                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
4435                         break;
4436                 }
4437
4438                 opcode = le16_to_cpu(event.desc.opcode);
4439                 switch (opcode) {
4440
4441                 case i40e_aqc_opc_get_link_status:
4442                         i40e_handle_link_event(pf, &event);
4443                         break;
4444                 case i40e_aqc_opc_send_msg_to_pf:
4445                         ret = i40e_vc_process_vf_msg(pf,
4446                                         le16_to_cpu(event.desc.retval),
4447                                         le32_to_cpu(event.desc.cookie_high),
4448                                         le32_to_cpu(event.desc.cookie_low),
4449                                         event.msg_buf,
4450                                         event.msg_size);
4451                         break;
4452                 case i40e_aqc_opc_lldp_update_mib:
4453                         dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
4454                         break;
4455                 case i40e_aqc_opc_event_lan_overflow:
4456                         dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
4457                         i40e_handle_lan_overflow_event(pf, &event);
4458                         break;
4459                 default:
4460                         dev_info(&pf->pdev->dev,
4461                                  "ARQ Error: Unknown event %d received\n",
4462                                  event.desc.opcode);
4463                         break;
4464                 }
4465         } while (pending && (i++ < pf->adminq_work_limit));
4466
4467         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
4468         /* re-enable Admin queue interrupt cause */
4469         val = rd32(hw, I40E_PFINT_ICR0_ENA);
4470         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4471         wr32(hw, I40E_PFINT_ICR0_ENA, val);
4472         i40e_flush(hw);
4473
4474         kfree(event.msg_buf);
4475 }
4476
4477 /**
4478  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
4479  * @veb: pointer to the VEB instance
4480  *
4481  * This is a recursive function that first builds the attached VSIs then
4482  * recurses in to build the next layer of VEB.  We track the connections
4483  * through our own index numbers because the seid's from the HW could
4484  * change across the reset.
4485  **/
4486 static int i40e_reconstitute_veb(struct i40e_veb *veb)
4487 {
4488         struct i40e_vsi *ctl_vsi = NULL;
4489         struct i40e_pf *pf = veb->pf;
4490         int v, veb_idx;
4491         int ret;
4492
4493         /* build VSI that owns this VEB, temporarily attached to base VEB */
4494         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
4495                 if (pf->vsi[v] &&
4496                     pf->vsi[v]->veb_idx == veb->idx &&
4497                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
4498                         ctl_vsi = pf->vsi[v];
4499                         break;
4500                 }
4501         }
4502         if (!ctl_vsi) {
4503                 dev_info(&pf->pdev->dev,
4504                          "missing owner VSI for veb_idx %d\n", veb->idx);
4505                 ret = -ENOENT;
4506                 goto end_reconstitute;
4507         }
4508         if (ctl_vsi != pf->vsi[pf->lan_vsi])
4509                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
4510         ret = i40e_add_vsi(ctl_vsi);
4511         if (ret) {
4512                 dev_info(&pf->pdev->dev,
4513                          "rebuild of owner VSI failed: %d\n", ret);
4514                 goto end_reconstitute;
4515         }
4516         i40e_vsi_reset_stats(ctl_vsi);
4517
4518         /* create the VEB in the switch and move the VSI onto the VEB */
4519         ret = i40e_add_veb(veb, ctl_vsi);
4520         if (ret)
4521                 goto end_reconstitute;
4522
4523         /* create the remaining VSIs attached to this VEB */
4524         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4525                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
4526                         continue;
4527
4528                 if (pf->vsi[v]->veb_idx == veb->idx) {
4529                         struct i40e_vsi *vsi = pf->vsi[v];
4530                         vsi->uplink_seid = veb->seid;
4531                         ret = i40e_add_vsi(vsi);
4532                         if (ret) {
4533                                 dev_info(&pf->pdev->dev,
4534                                          "rebuild of vsi_idx %d failed: %d\n",
4535                                          v, ret);
4536                                 goto end_reconstitute;
4537                         }
4538                         i40e_vsi_reset_stats(vsi);
4539                 }
4540         }
4541
4542         /* create any VEBs attached to this VEB - RECURSION */
4543         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
4544                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
4545                         pf->veb[veb_idx]->uplink_seid = veb->seid;
4546                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
4547                         if (ret)
4548                                 break;
4549                 }
4550         }
4551
4552 end_reconstitute:
4553         return ret;
4554 }
4555
4556 /**
4557  * i40e_get_capabilities - get info about the HW
4558  * @pf: the PF struct
4559  **/
4560 static int i40e_get_capabilities(struct i40e_pf *pf)
4561 {
4562         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
4563         u16 data_size;
4564         int buf_len;
4565         int err;
4566
4567         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
4568         do {
4569                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
4570                 if (!cap_buf)
4571                         return -ENOMEM;
4572
4573                 /* this loads the data into the hw struct for us */
4574                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
4575                                             &data_size,
4576                                             i40e_aqc_opc_list_func_capabilities,
4577                                             NULL);
4578                 /* data loaded, buffer no longer needed */
4579                 kfree(cap_buf);
4580
4581                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
4582                         /* retry with a larger buffer */
4583                         buf_len = data_size;
4584                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
4585                         dev_info(&pf->pdev->dev,
4586                                  "capability discovery failed: aq=%d\n",
4587                                  pf->hw.aq.asq_last_status);
4588                         return -ENODEV;
4589                 }
4590         } while (err);
4591
4592         if (pf->hw.debug_mask & I40E_DEBUG_USER)
4593                 dev_info(&pf->pdev->dev,
4594                          "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
4595                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
4596                          pf->hw.func_caps.num_msix_vectors,
4597                          pf->hw.func_caps.num_msix_vectors_vf,
4598                          pf->hw.func_caps.fd_filters_guaranteed,
4599                          pf->hw.func_caps.fd_filters_best_effort,
4600                          pf->hw.func_caps.num_tx_qp,
4601                          pf->hw.func_caps.num_vsis);
4602
4603         return 0;
4604 }
4605
4606 /**
4607  * i40e_fdir_setup - initialize the Flow Director resources
4608  * @pf: board private structure
4609  **/
4610 static void i40e_fdir_setup(struct i40e_pf *pf)
4611 {
4612         struct i40e_vsi *vsi;
4613         bool new_vsi = false;
4614         int err, i;
4615
4616         if (!(pf->flags & (I40E_FLAG_FDIR_ENABLED |
4617                            I40E_FLAG_FDIR_ATR_ENABLED)))
4618                 return;
4619
4620         pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
4621
4622         /* find existing or make new FDIR VSI */
4623         vsi = NULL;
4624         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4625                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR)
4626                         vsi = pf->vsi[i];
4627         if (!vsi) {
4628                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR, pf->mac_seid, 0);
4629                 if (!vsi) {
4630                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
4631                         pf->flags &= ~I40E_FLAG_FDIR_ENABLED;
4632                         return;
4633                 }
4634                 new_vsi = true;
4635         }
4636         WARN_ON(vsi->base_queue != I40E_FDIR_RING);
4637         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_rings);
4638
4639         err = i40e_vsi_setup_tx_resources(vsi);
4640         if (!err)
4641                 err = i40e_vsi_setup_rx_resources(vsi);
4642         if (!err)
4643                 err = i40e_vsi_configure(vsi);
4644         if (!err && new_vsi) {
4645                 char int_name[IFNAMSIZ + 9];
4646                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4647                          dev_driver_string(&pf->pdev->dev));
4648                 err = i40e_vsi_request_irq(vsi, int_name);
4649         }
4650         if (!err)
4651                 err = i40e_up_complete(vsi);
4652
4653         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4654 }
4655
4656 /**
4657  * i40e_fdir_teardown - release the Flow Director resources
4658  * @pf: board private structure
4659  **/
4660 static void i40e_fdir_teardown(struct i40e_pf *pf)
4661 {
4662         int i;
4663
4664         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
4665                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
4666                         i40e_vsi_release(pf->vsi[i]);
4667                         break;
4668                 }
4669         }
4670 }
4671
4672 /**
4673  * i40e_handle_reset_warning - prep for the core to reset
4674  * @pf: board private structure
4675  *
4676  * Close up the VFs and other things in prep for a Core Reset,
4677  * then get ready to rebuild the world.
4678  **/
4679 static void i40e_handle_reset_warning(struct i40e_pf *pf)
4680 {
4681         struct i40e_driver_version dv;
4682         struct i40e_hw *hw = &pf->hw;
4683         i40e_status ret;
4684         u32 v;
4685
4686         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
4687         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
4688                 return;
4689
4690         dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n");
4691
4692         i40e_vc_notify_reset(pf);
4693
4694         /* quiesce the VSIs and their queues that are not already DOWN */
4695         i40e_pf_quiesce_all_vsi(pf);
4696
4697         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4698                 if (pf->vsi[v])
4699                         pf->vsi[v]->seid = 0;
4700         }
4701
4702         i40e_shutdown_adminq(&pf->hw);
4703
4704         /* Now we wait for GRST to settle out.
4705          * We don't have to delete the VEBs or VSIs from the hw switch
4706          * because the reset will make them disappear.
4707          */
4708         ret = i40e_pf_reset(hw);
4709         if (ret)
4710                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
4711         pf->pfr_count++;
4712
4713         if (test_bit(__I40E_DOWN, &pf->state))
4714                 goto end_core_reset;
4715         dev_info(&pf->pdev->dev, "Rebuilding internal switch\n");
4716
4717         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
4718         ret = i40e_init_adminq(&pf->hw);
4719         if (ret) {
4720                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
4721                 goto end_core_reset;
4722         }
4723
4724         ret = i40e_get_capabilities(pf);
4725         if (ret) {
4726                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
4727                          ret);
4728                 goto end_core_reset;
4729         }
4730
4731         /* call shutdown HMC */
4732         ret = i40e_shutdown_lan_hmc(hw);
4733         if (ret) {
4734                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
4735                 goto end_core_reset;
4736         }
4737
4738         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
4739                                 hw->func_caps.num_rx_qp,
4740                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
4741         if (ret) {
4742                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
4743                 goto end_core_reset;
4744         }
4745         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
4746         if (ret) {
4747                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
4748                 goto end_core_reset;
4749         }
4750
4751         /* do basic switch setup */
4752         ret = i40e_setup_pf_switch(pf);
4753         if (ret)
4754                 goto end_core_reset;
4755
4756         /* Rebuild the VSIs and VEBs that existed before reset.
4757          * They are still in our local switch element arrays, so only
4758          * need to rebuild the switch model in the HW.
4759          *
4760          * If there were VEBs but the reconstitution failed, we'll try
4761          * try to recover minimal use by getting the basic PF VSI working.
4762          */
4763         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
4764                 dev_info(&pf->pdev->dev, "attempting to rebuild switch\n");
4765                 /* find the one VEB connected to the MAC, and find orphans */
4766                 for (v = 0; v < I40E_MAX_VEB; v++) {
4767                         if (!pf->veb[v])
4768                                 continue;
4769
4770                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
4771                             pf->veb[v]->uplink_seid == 0) {
4772                                 ret = i40e_reconstitute_veb(pf->veb[v]);
4773
4774                                 if (!ret)
4775                                         continue;
4776
4777                                 /* If Main VEB failed, we're in deep doodoo,
4778                                  * so give up rebuilding the switch and set up
4779                                  * for minimal rebuild of PF VSI.
4780                                  * If orphan failed, we'll report the error
4781                                  * but try to keep going.
4782                                  */
4783                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
4784                                         dev_info(&pf->pdev->dev,
4785                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
4786                                                  ret);
4787                                         pf->vsi[pf->lan_vsi]->uplink_seid
4788                                                                 = pf->mac_seid;
4789                                         break;
4790                                 } else if (pf->veb[v]->uplink_seid == 0) {
4791                                         dev_info(&pf->pdev->dev,
4792                                                  "rebuild of orphan VEB failed: %d\n",
4793                                                  ret);
4794                                 }
4795                         }
4796                 }
4797         }
4798
4799         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
4800                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
4801                 /* no VEB, so rebuild only the Main VSI */
4802                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
4803                 if (ret) {
4804                         dev_info(&pf->pdev->dev,
4805                                  "rebuild of Main VSI failed: %d\n", ret);
4806                         goto end_core_reset;
4807                 }
4808         }
4809
4810         /* reinit the misc interrupt */
4811         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4812                 ret = i40e_setup_misc_vector(pf);
4813
4814         /* restart the VSIs that were rebuilt and running before the reset */
4815         i40e_pf_unquiesce_all_vsi(pf);
4816
4817         /* tell the firmware that we're starting */
4818         dv.major_version = DRV_VERSION_MAJOR;
4819         dv.minor_version = DRV_VERSION_MINOR;
4820         dv.build_version = DRV_VERSION_BUILD;
4821         dv.subbuild_version = 0;
4822         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
4823
4824         dev_info(&pf->pdev->dev, "PF reset done\n");
4825
4826 end_core_reset:
4827         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
4828 }
4829
4830 /**
4831  * i40e_handle_mdd_event
4832  * @pf: pointer to the pf structure
4833  *
4834  * Called from the MDD irq handler to identify possibly malicious vfs
4835  **/
4836 static void i40e_handle_mdd_event(struct i40e_pf *pf)
4837 {
4838         struct i40e_hw *hw = &pf->hw;
4839         bool mdd_detected = false;
4840         struct i40e_vf *vf;
4841         u32 reg;
4842         int i;
4843
4844         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
4845                 return;
4846
4847         /* find what triggered the MDD event */
4848         reg = rd32(hw, I40E_GL_MDET_TX);
4849         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
4850                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
4851                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
4852                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
4853                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
4854                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
4855                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
4856                 dev_info(&pf->pdev->dev,
4857                          "Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n",
4858                          event, queue, func);
4859                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
4860                 mdd_detected = true;
4861         }
4862         reg = rd32(hw, I40E_GL_MDET_RX);
4863         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
4864                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
4865                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
4866                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
4867                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
4868                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
4869                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
4870                 dev_info(&pf->pdev->dev,
4871                          "Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n",
4872                          event, queue, func);
4873                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
4874                 mdd_detected = true;
4875         }
4876
4877         /* see if one of the VFs needs its hand slapped */
4878         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
4879                 vf = &(pf->vf[i]);
4880                 reg = rd32(hw, I40E_VP_MDET_TX(i));
4881                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
4882                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
4883                         vf->num_mdd_events++;
4884                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
4885                 }
4886
4887                 reg = rd32(hw, I40E_VP_MDET_RX(i));
4888                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
4889                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
4890                         vf->num_mdd_events++;
4891                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
4892                 }
4893
4894                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
4895                         dev_info(&pf->pdev->dev,
4896                                  "Too many MDD events on VF %d, disabled\n", i);
4897                         dev_info(&pf->pdev->dev,
4898                                  "Use PF Control I/F to re-enable the VF\n");
4899                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
4900                 }
4901         }
4902
4903         /* re-enable mdd interrupt cause */
4904         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
4905         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4906         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4907         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4908         i40e_flush(hw);
4909 }
4910
4911 /**
4912  * i40e_service_task - Run the driver's async subtasks
4913  * @work: pointer to work_struct containing our data
4914  **/
4915 static void i40e_service_task(struct work_struct *work)
4916 {
4917         struct i40e_pf *pf = container_of(work,
4918                                           struct i40e_pf,
4919                                           service_task);
4920         unsigned long start_time = jiffies;
4921
4922         i40e_reset_subtask(pf);
4923         i40e_handle_mdd_event(pf);
4924         i40e_vc_process_vflr_event(pf);
4925         i40e_watchdog_subtask(pf);
4926         i40e_fdir_reinit_subtask(pf);
4927         i40e_check_hang_subtask(pf);
4928         i40e_sync_filters_subtask(pf);
4929         i40e_clean_adminq_subtask(pf);
4930
4931         i40e_service_event_complete(pf);
4932
4933         /* If the tasks have taken longer than one timer cycle or there
4934          * is more work to be done, reschedule the service task now
4935          * rather than wait for the timer to tick again.
4936          */
4937         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
4938             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
4939             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
4940             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
4941                 i40e_service_event_schedule(pf);
4942 }
4943
4944 /**
4945  * i40e_service_timer - timer callback
4946  * @data: pointer to PF struct
4947  **/
4948 static void i40e_service_timer(unsigned long data)
4949 {
4950         struct i40e_pf *pf = (struct i40e_pf *)data;
4951
4952         mod_timer(&pf->service_timer,
4953                   round_jiffies(jiffies + pf->service_timer_period));
4954         i40e_service_event_schedule(pf);
4955 }
4956
4957 /**
4958  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
4959  * @vsi: the VSI being configured
4960  **/
4961 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
4962 {
4963         struct i40e_pf *pf = vsi->back;
4964
4965         switch (vsi->type) {
4966         case I40E_VSI_MAIN:
4967                 vsi->alloc_queue_pairs = pf->num_lan_qps;
4968                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4969                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4970                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4971                         vsi->num_q_vectors = pf->num_lan_msix;
4972                 else
4973                         vsi->num_q_vectors = 1;
4974
4975                 break;
4976
4977         case I40E_VSI_FDIR:
4978                 vsi->alloc_queue_pairs = 1;
4979                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
4980                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4981                 vsi->num_q_vectors = 1;
4982                 break;
4983
4984         case I40E_VSI_VMDQ2:
4985                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
4986                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4987                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4988                 vsi->num_q_vectors = pf->num_vmdq_msix;
4989                 break;
4990
4991         case I40E_VSI_SRIOV:
4992                 vsi->alloc_queue_pairs = pf->num_vf_qps;
4993                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4994                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4995                 break;
4996
4997         default:
4998                 WARN_ON(1);
4999                 return -ENODATA;
5000         }
5001
5002         return 0;
5003 }
5004
5005 /**
5006  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5007  * @pf: board private structure
5008  * @type: type of VSI
5009  *
5010  * On error: returns error code (negative)
5011  * On success: returns vsi index in PF (positive)
5012  **/
5013 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5014 {
5015         int ret = -ENODEV;
5016         struct i40e_vsi *vsi;
5017         int sz_vectors;
5018         int sz_rings;
5019         int vsi_idx;
5020         int i;
5021
5022         /* Need to protect the allocation of the VSIs at the PF level */
5023         mutex_lock(&pf->switch_mutex);
5024
5025         /* VSI list may be fragmented if VSI creation/destruction has
5026          * been happening.  We can afford to do a quick scan to look
5027          * for any free VSIs in the list.
5028          *
5029          * find next empty vsi slot, looping back around if necessary
5030          */
5031         i = pf->next_vsi;
5032         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5033                 i++;
5034         if (i >= pf->hw.func_caps.num_vsis) {
5035                 i = 0;
5036                 while (i < pf->next_vsi && pf->vsi[i])
5037                         i++;
5038         }
5039
5040         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5041                 vsi_idx = i;             /* Found one! */
5042         } else {
5043                 ret = -ENODEV;
5044                 goto unlock_pf;  /* out of VSI slots! */
5045         }
5046         pf->next_vsi = ++i;
5047
5048         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5049         if (!vsi) {
5050                 ret = -ENOMEM;
5051                 goto unlock_pf;
5052         }
5053         vsi->type = type;
5054         vsi->back = pf;
5055         set_bit(__I40E_DOWN, &vsi->state);
5056         vsi->flags = 0;
5057         vsi->idx = vsi_idx;
5058         vsi->rx_itr_setting = pf->rx_itr_default;
5059         vsi->tx_itr_setting = pf->tx_itr_default;
5060         vsi->netdev_registered = false;
5061         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5062         INIT_LIST_HEAD(&vsi->mac_filter_list);
5063
5064         ret = i40e_set_num_rings_in_vsi(vsi);
5065         if (ret)
5066                 goto err_rings;
5067
5068         /* allocate memory for ring pointers */
5069         sz_rings = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5070         vsi->tx_rings = kzalloc(sz_rings, GFP_KERNEL);
5071         if (!vsi->tx_rings) {
5072                 ret = -ENOMEM;
5073                 goto err_rings;
5074         }
5075         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5076
5077         /* allocate memory for q_vector pointers */
5078         sz_vectors = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5079         vsi->q_vectors = kzalloc(sz_vectors, GFP_KERNEL);
5080         if (!vsi->q_vectors) {
5081                 ret = -ENOMEM;
5082                 goto err_vectors;
5083         }
5084
5085         /* Setup default MSIX irq handler for VSI */
5086         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5087
5088         pf->vsi[vsi_idx] = vsi;
5089         ret = vsi_idx;
5090         goto unlock_pf;
5091
5092 err_vectors:
5093         kfree(vsi->tx_rings);
5094 err_rings:
5095         pf->next_vsi = i - 1;
5096         kfree(vsi);
5097 unlock_pf:
5098         mutex_unlock(&pf->switch_mutex);
5099         return ret;
5100 }
5101
5102 /**
5103  * i40e_vsi_clear - Deallocate the VSI provided
5104  * @vsi: the VSI being un-configured
5105  **/
5106 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5107 {
5108         struct i40e_pf *pf;
5109
5110         if (!vsi)
5111                 return 0;
5112
5113         if (!vsi->back)
5114                 goto free_vsi;
5115         pf = vsi->back;
5116
5117         mutex_lock(&pf->switch_mutex);
5118         if (!pf->vsi[vsi->idx]) {
5119                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5120                         vsi->idx, vsi->idx, vsi, vsi->type);
5121                 goto unlock_vsi;
5122         }
5123
5124         if (pf->vsi[vsi->idx] != vsi) {
5125                 dev_err(&pf->pdev->dev,
5126                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5127                         pf->vsi[vsi->idx]->idx,
5128                         pf->vsi[vsi->idx],
5129                         pf->vsi[vsi->idx]->type,
5130                         vsi->idx, vsi, vsi->type);
5131                 goto unlock_vsi;
5132         }
5133
5134         /* updates the pf for this cleared vsi */
5135         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5136         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5137
5138         /* free the ring and vector containers */
5139         kfree(vsi->q_vectors);
5140         kfree(vsi->tx_rings);
5141
5142         pf->vsi[vsi->idx] = NULL;
5143         if (vsi->idx < pf->next_vsi)
5144                 pf->next_vsi = vsi->idx;
5145
5146 unlock_vsi:
5147         mutex_unlock(&pf->switch_mutex);
5148 free_vsi:
5149         kfree(vsi);
5150
5151         return 0;
5152 }
5153
5154 /**
5155  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5156  * @vsi: the VSI being cleaned
5157  **/
5158 static s32 i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5159 {
5160         int i;
5161
5162         if (vsi->tx_rings[0])
5163                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5164                         kfree_rcu(vsi->tx_rings[i], rcu);
5165                         vsi->tx_rings[i] = NULL;
5166                         vsi->rx_rings[i] = NULL;
5167                 }
5168
5169         return 0;
5170 }
5171
5172 /**
5173  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5174  * @vsi: the VSI being configured
5175  **/
5176 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5177 {
5178         struct i40e_pf *pf = vsi->back;
5179         int i;
5180
5181         /* Set basic values in the rings to be used later during open() */
5182         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5183                 struct i40e_ring *tx_ring;
5184                 struct i40e_ring *rx_ring;
5185
5186                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5187                 if (!tx_ring)
5188                         goto err_out;
5189
5190                 tx_ring->queue_index = i;
5191                 tx_ring->reg_idx = vsi->base_queue + i;
5192                 tx_ring->ring_active = false;
5193                 tx_ring->vsi = vsi;
5194                 tx_ring->netdev = vsi->netdev;
5195                 tx_ring->dev = &pf->pdev->dev;
5196                 tx_ring->count = vsi->num_desc;
5197                 tx_ring->size = 0;
5198                 tx_ring->dcb_tc = 0;
5199                 vsi->tx_rings[i] = tx_ring;
5200
5201                 rx_ring = &tx_ring[1];
5202                 rx_ring->queue_index = i;
5203                 rx_ring->reg_idx = vsi->base_queue + i;
5204                 rx_ring->ring_active = false;
5205                 rx_ring->vsi = vsi;
5206                 rx_ring->netdev = vsi->netdev;
5207                 rx_ring->dev = &pf->pdev->dev;
5208                 rx_ring->count = vsi->num_desc;
5209                 rx_ring->size = 0;
5210                 rx_ring->dcb_tc = 0;
5211                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
5212                         set_ring_16byte_desc_enabled(rx_ring);
5213                 else
5214                         clear_ring_16byte_desc_enabled(rx_ring);
5215                 vsi->rx_rings[i] = rx_ring;
5216         }
5217
5218         return 0;
5219
5220 err_out:
5221         i40e_vsi_clear_rings(vsi);
5222         return -ENOMEM;
5223 }
5224
5225 /**
5226  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
5227  * @pf: board private structure
5228  * @vectors: the number of MSI-X vectors to request
5229  *
5230  * Returns the number of vectors reserved, or error
5231  **/
5232 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
5233 {
5234         int err = 0;
5235
5236         pf->num_msix_entries = 0;
5237         while (vectors >= I40E_MIN_MSIX) {
5238                 err = pci_enable_msix(pf->pdev, pf->msix_entries, vectors);
5239                 if (err == 0) {
5240                         /* good to go */
5241                         pf->num_msix_entries = vectors;
5242                         break;
5243                 } else if (err < 0) {
5244                         /* total failure */
5245                         dev_info(&pf->pdev->dev,
5246                                  "MSI-X vector reservation failed: %d\n", err);
5247                         vectors = 0;
5248                         break;
5249                 } else {
5250                         /* err > 0 is the hint for retry */
5251                         dev_info(&pf->pdev->dev,
5252                                  "MSI-X vectors wanted %d, retrying with %d\n",
5253                                  vectors, err);
5254                         vectors = err;
5255                 }
5256         }
5257
5258         if (vectors > 0 && vectors < I40E_MIN_MSIX) {
5259                 dev_info(&pf->pdev->dev,
5260                          "Couldn't get enough vectors, only %d available\n",
5261                          vectors);
5262                 vectors = 0;
5263         }
5264
5265         return vectors;
5266 }
5267
5268 /**
5269  * i40e_init_msix - Setup the MSIX capability
5270  * @pf: board private structure
5271  *
5272  * Work with the OS to set up the MSIX vectors needed.
5273  *
5274  * Returns 0 on success, negative on failure
5275  **/
5276 static int i40e_init_msix(struct i40e_pf *pf)
5277 {
5278         i40e_status err = 0;
5279         struct i40e_hw *hw = &pf->hw;
5280         int v_budget, i;
5281         int vec;
5282
5283         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
5284                 return -ENODEV;
5285
5286         /* The number of vectors we'll request will be comprised of:
5287          *   - Add 1 for "other" cause for Admin Queue events, etc.
5288          *   - The number of LAN queue pairs
5289          *        already adjusted for the NUMA node
5290          *        assumes symmetric Tx/Rx pairing
5291          *   - The number of VMDq pairs
5292          * Once we count this up, try the request.
5293          *
5294          * If we can't get what we want, we'll simplify to nearly nothing
5295          * and try again.  If that still fails, we punt.
5296          */
5297         pf->num_lan_msix = pf->num_lan_qps;
5298         pf->num_vmdq_msix = pf->num_vmdq_qps;
5299         v_budget = 1 + pf->num_lan_msix;
5300         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
5301         if (pf->flags & I40E_FLAG_FDIR_ENABLED)
5302                 v_budget++;
5303
5304         /* Scale down if necessary, and the rings will share vectors */
5305         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
5306
5307         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
5308                                    GFP_KERNEL);
5309         if (!pf->msix_entries)
5310                 return -ENOMEM;
5311
5312         for (i = 0; i < v_budget; i++)
5313                 pf->msix_entries[i].entry = i;
5314         vec = i40e_reserve_msix_vectors(pf, v_budget);
5315         if (vec < I40E_MIN_MSIX) {
5316                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
5317                 kfree(pf->msix_entries);
5318                 pf->msix_entries = NULL;
5319                 return -ENODEV;
5320
5321         } else if (vec == I40E_MIN_MSIX) {
5322                 /* Adjust for minimal MSIX use */
5323                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSIX vectors\n");
5324                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
5325                 pf->num_vmdq_vsis = 0;
5326                 pf->num_vmdq_qps = 0;
5327                 pf->num_vmdq_msix = 0;
5328                 pf->num_lan_qps = 1;
5329                 pf->num_lan_msix = 1;
5330
5331         } else if (vec != v_budget) {
5332                 /* Scale vector usage down */
5333                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
5334                 vec--;                    /* reserve the misc vector */
5335
5336                 /* partition out the remaining vectors */
5337                 switch (vec) {
5338                 case 2:
5339                         pf->num_vmdq_vsis = 1;
5340                         pf->num_lan_msix = 1;
5341                         break;
5342                 case 3:
5343                         pf->num_vmdq_vsis = 1;
5344                         pf->num_lan_msix = 2;
5345                         break;
5346                 default:
5347                         pf->num_lan_msix = min_t(int, (vec / 2),
5348                                                  pf->num_lan_qps);
5349                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
5350                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
5351                         break;
5352                 }
5353         }
5354
5355         return err;
5356 }
5357
5358 /**
5359  * i40e_alloc_q_vector - Allocate memory for a single interrupt vector
5360  * @vsi: the VSI being configured
5361  * @v_idx: index of the vector in the vsi struct
5362  *
5363  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
5364  **/
5365 static int i40e_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
5366 {
5367         struct i40e_q_vector *q_vector;
5368
5369         /* allocate q_vector */
5370         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
5371         if (!q_vector)
5372                 return -ENOMEM;
5373
5374         q_vector->vsi = vsi;
5375         q_vector->v_idx = v_idx;
5376         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
5377         if (vsi->netdev)
5378                 netif_napi_add(vsi->netdev, &q_vector->napi,
5379                                i40e_napi_poll, vsi->work_limit);
5380
5381         q_vector->rx.latency_range = I40E_LOW_LATENCY;
5382         q_vector->tx.latency_range = I40E_LOW_LATENCY;
5383
5384         /* tie q_vector and vsi together */
5385         vsi->q_vectors[v_idx] = q_vector;
5386
5387         return 0;
5388 }
5389
5390 /**
5391  * i40e_alloc_q_vectors - Allocate memory for interrupt vectors
5392  * @vsi: the VSI being configured
5393  *
5394  * We allocate one q_vector per queue interrupt.  If allocation fails we
5395  * return -ENOMEM.
5396  **/
5397 static int i40e_alloc_q_vectors(struct i40e_vsi *vsi)
5398 {
5399         struct i40e_pf *pf = vsi->back;
5400         int v_idx, num_q_vectors;
5401         int err;
5402
5403         /* if not MSIX, give the one vector only to the LAN VSI */
5404         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5405                 num_q_vectors = vsi->num_q_vectors;
5406         else if (vsi == pf->vsi[pf->lan_vsi])
5407                 num_q_vectors = 1;
5408         else
5409                 return -EINVAL;
5410
5411         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
5412                 err = i40e_alloc_q_vector(vsi, v_idx);
5413                 if (err)
5414                         goto err_out;
5415         }
5416
5417         return 0;
5418
5419 err_out:
5420         while (v_idx--)
5421                 i40e_free_q_vector(vsi, v_idx);
5422
5423         return err;
5424 }
5425
5426 /**
5427  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
5428  * @pf: board private structure to initialize
5429  **/
5430 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
5431 {
5432         int err = 0;
5433
5434         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
5435                 err = i40e_init_msix(pf);
5436                 if (err) {
5437                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED      |
5438                                         I40E_FLAG_RSS_ENABLED      |
5439                                         I40E_FLAG_MQ_ENABLED       |
5440                                         I40E_FLAG_DCB_ENABLED      |
5441                                         I40E_FLAG_SRIOV_ENABLED    |
5442                                         I40E_FLAG_FDIR_ENABLED     |
5443                                         I40E_FLAG_FDIR_ATR_ENABLED |
5444                                         I40E_FLAG_VMDQ_ENABLED);
5445
5446                         /* rework the queue expectations without MSIX */
5447                         i40e_determine_queue_usage(pf);
5448                 }
5449         }
5450
5451         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
5452             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
5453                 dev_info(&pf->pdev->dev, "MSIX not available, trying MSI\n");
5454                 err = pci_enable_msi(pf->pdev);
5455                 if (err) {
5456                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
5457                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
5458                 }
5459         }
5460
5461         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
5462                 dev_info(&pf->pdev->dev, "MSIX and MSI not available, falling back to Legacy IRQ\n");
5463
5464         /* track first vector for misc interrupts */
5465         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
5466 }
5467
5468 /**
5469  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
5470  * @pf: board private structure
5471  *
5472  * This sets up the handler for MSIX 0, which is used to manage the
5473  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
5474  * when in MSI or Legacy interrupt mode.
5475  **/
5476 static int i40e_setup_misc_vector(struct i40e_pf *pf)
5477 {
5478         struct i40e_hw *hw = &pf->hw;
5479         int err = 0;
5480
5481         /* Only request the irq if this is the first time through, and
5482          * not when we're rebuilding after a Reset
5483          */
5484         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
5485                 err = request_irq(pf->msix_entries[0].vector,
5486                                   i40e_intr, 0, pf->misc_int_name, pf);
5487                 if (err) {
5488                         dev_info(&pf->pdev->dev,
5489                                  "request_irq for msix_misc failed: %d\n", err);
5490                         return -EFAULT;
5491                 }
5492         }
5493
5494         i40e_enable_misc_int_causes(hw);
5495
5496         /* associate no queues to the misc vector */
5497         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
5498         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
5499
5500         i40e_flush(hw);
5501
5502         i40e_irq_dynamic_enable_icr0(pf);
5503
5504         return err;
5505 }
5506
5507 /**
5508  * i40e_config_rss - Prepare for RSS if used
5509  * @pf: board private structure
5510  **/
5511 static int i40e_config_rss(struct i40e_pf *pf)
5512 {
5513         struct i40e_hw *hw = &pf->hw;
5514         u32 lut = 0;
5515         int i, j;
5516         u64 hena;
5517         /* Set of random keys generated using kernel random number generator */
5518         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
5519                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
5520                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
5521                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
5522
5523         /* Fill out hash function seed */
5524         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
5525                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
5526
5527         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
5528         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
5529                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
5530         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
5531                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
5532                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
5533                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP) |
5534                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP) |
5535                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
5536                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
5537                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
5538                 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4)|
5539                 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
5540         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
5541         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
5542
5543         /* Populate the LUT with max no. of queues in round robin fashion */
5544         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
5545
5546                 /* The assumption is that lan qp count will be the highest
5547                  * qp count for any PF VSI that needs RSS.
5548                  * If multiple VSIs need RSS support, all the qp counts
5549                  * for those VSIs should be a power of 2 for RSS to work.
5550                  * If LAN VSI is the only consumer for RSS then this requirement
5551                  * is not necessary.
5552                  */
5553                 if (j == pf->rss_size)
5554                         j = 0;
5555                 /* lut = 4-byte sliding window of 4 lut entries */
5556                 lut = (lut << 8) | (j &
5557                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
5558                 /* On i = 3, we have 4 entries in lut; write to the register */
5559                 if ((i & 3) == 3)
5560                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
5561         }
5562         i40e_flush(hw);
5563
5564         return 0;
5565 }
5566
5567 /**
5568  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
5569  * @pf: board private structure to initialize
5570  *
5571  * i40e_sw_init initializes the Adapter private data structure.
5572  * Fields are initialized based on PCI device information and
5573  * OS network device settings (MTU size).
5574  **/
5575 static int i40e_sw_init(struct i40e_pf *pf)
5576 {
5577         int err = 0;
5578         int size;
5579
5580         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
5581                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
5582         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
5583                 if (I40E_DEBUG_USER & debug)
5584                         pf->hw.debug_mask = debug;
5585                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
5586                                                 I40E_DEFAULT_MSG_ENABLE);
5587         }
5588
5589         /* Set default capability flags */
5590         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
5591                     I40E_FLAG_MSI_ENABLED     |
5592                     I40E_FLAG_MSIX_ENABLED    |
5593                     I40E_FLAG_RX_PS_ENABLED   |
5594                     I40E_FLAG_MQ_ENABLED      |
5595                     I40E_FLAG_RX_1BUF_ENABLED;
5596
5597         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
5598         if (pf->hw.func_caps.rss) {
5599                 pf->flags |= I40E_FLAG_RSS_ENABLED;
5600                 pf->rss_size = min_t(int, pf->rss_size_max,
5601                                      nr_cpus_node(numa_node_id()));
5602         } else {
5603                 pf->rss_size = 1;
5604         }
5605
5606         if (pf->hw.func_caps.dcb)
5607                 pf->num_tc_qps = I40E_DEFAULT_QUEUES_PER_TC;
5608         else
5609                 pf->num_tc_qps = 0;
5610
5611         if (pf->hw.func_caps.fd) {
5612                 /* FW/NVM is not yet fixed in this regard */
5613                 if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
5614                     (pf->hw.func_caps.fd_filters_best_effort > 0)) {
5615                         pf->flags |= I40E_FLAG_FDIR_ATR_ENABLED;
5616                         dev_info(&pf->pdev->dev,
5617                                  "Flow Director ATR mode Enabled\n");
5618                         pf->flags |= I40E_FLAG_FDIR_ENABLED;
5619                         dev_info(&pf->pdev->dev,
5620                                  "Flow Director Side Band mode Enabled\n");
5621                         pf->fdir_pf_filter_count =
5622                                          pf->hw.func_caps.fd_filters_guaranteed;
5623                 }
5624         } else {
5625                 pf->fdir_pf_filter_count = 0;
5626         }
5627
5628         if (pf->hw.func_caps.vmdq) {
5629                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
5630                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
5631                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
5632         }
5633
5634         /* MFP mode enabled */
5635         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
5636                 pf->flags |= I40E_FLAG_MFP_ENABLED;
5637                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
5638         }
5639
5640 #ifdef CONFIG_PCI_IOV
5641         if (pf->hw.func_caps.num_vfs) {
5642                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
5643                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
5644                 pf->num_req_vfs = min_t(int,
5645                                         pf->hw.func_caps.num_vfs,
5646                                         I40E_MAX_VF_COUNT);
5647         }
5648 #endif /* CONFIG_PCI_IOV */
5649         pf->eeprom_version = 0xDEAD;
5650         pf->lan_veb = I40E_NO_VEB;
5651         pf->lan_vsi = I40E_NO_VSI;
5652
5653         /* set up queue assignment tracking */
5654         size = sizeof(struct i40e_lump_tracking)
5655                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
5656         pf->qp_pile = kzalloc(size, GFP_KERNEL);
5657         if (!pf->qp_pile) {
5658                 err = -ENOMEM;
5659                 goto sw_init_done;
5660         }
5661         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
5662         pf->qp_pile->search_hint = 0;
5663
5664         /* set up vector assignment tracking */
5665         size = sizeof(struct i40e_lump_tracking)
5666                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
5667         pf->irq_pile = kzalloc(size, GFP_KERNEL);
5668         if (!pf->irq_pile) {
5669                 kfree(pf->qp_pile);
5670                 err = -ENOMEM;
5671                 goto sw_init_done;
5672         }
5673         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
5674         pf->irq_pile->search_hint = 0;
5675
5676         mutex_init(&pf->switch_mutex);
5677
5678 sw_init_done:
5679         return err;
5680 }
5681
5682 /**
5683  * i40e_set_features - set the netdev feature flags
5684  * @netdev: ptr to the netdev being adjusted
5685  * @features: the feature set that the stack is suggesting
5686  **/
5687 static int i40e_set_features(struct net_device *netdev,
5688                              netdev_features_t features)
5689 {
5690         struct i40e_netdev_priv *np = netdev_priv(netdev);
5691         struct i40e_vsi *vsi = np->vsi;
5692
5693         if (features & NETIF_F_HW_VLAN_CTAG_RX)
5694                 i40e_vlan_stripping_enable(vsi);
5695         else
5696                 i40e_vlan_stripping_disable(vsi);
5697
5698         return 0;
5699 }
5700
5701 static const struct net_device_ops i40e_netdev_ops = {
5702         .ndo_open               = i40e_open,
5703         .ndo_stop               = i40e_close,
5704         .ndo_start_xmit         = i40e_lan_xmit_frame,
5705         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
5706         .ndo_set_rx_mode        = i40e_set_rx_mode,
5707         .ndo_validate_addr      = eth_validate_addr,
5708         .ndo_set_mac_address    = i40e_set_mac,
5709         .ndo_change_mtu         = i40e_change_mtu,
5710         .ndo_tx_timeout         = i40e_tx_timeout,
5711         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
5712         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
5713 #ifdef CONFIG_NET_POLL_CONTROLLER
5714         .ndo_poll_controller    = i40e_netpoll,
5715 #endif
5716         .ndo_setup_tc           = i40e_setup_tc,
5717         .ndo_set_features       = i40e_set_features,
5718         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
5719         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
5720         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
5721         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
5722 };
5723
5724 /**
5725  * i40e_config_netdev - Setup the netdev flags
5726  * @vsi: the VSI being configured
5727  *
5728  * Returns 0 on success, negative value on failure
5729  **/
5730 static int i40e_config_netdev(struct i40e_vsi *vsi)
5731 {
5732         struct i40e_pf *pf = vsi->back;
5733         struct i40e_hw *hw = &pf->hw;
5734         struct i40e_netdev_priv *np;
5735         struct net_device *netdev;
5736         u8 mac_addr[ETH_ALEN];
5737         int etherdev_size;
5738
5739         etherdev_size = sizeof(struct i40e_netdev_priv);
5740         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
5741         if (!netdev)
5742                 return -ENOMEM;
5743
5744         vsi->netdev = netdev;
5745         np = netdev_priv(netdev);
5746         np->vsi = vsi;
5747
5748         netdev->hw_enc_features = NETIF_F_IP_CSUM        |
5749                                   NETIF_F_GSO_UDP_TUNNEL |
5750                                   NETIF_F_TSO            |
5751                                   NETIF_F_SG;
5752
5753         netdev->features = NETIF_F_SG                  |
5754                            NETIF_F_IP_CSUM             |
5755                            NETIF_F_SCTP_CSUM           |
5756                            NETIF_F_HIGHDMA             |
5757                            NETIF_F_GSO_UDP_TUNNEL      |
5758                            NETIF_F_HW_VLAN_CTAG_TX     |
5759                            NETIF_F_HW_VLAN_CTAG_RX     |
5760                            NETIF_F_HW_VLAN_CTAG_FILTER |
5761                            NETIF_F_IPV6_CSUM           |
5762                            NETIF_F_TSO                 |
5763                            NETIF_F_TSO6                |
5764                            NETIF_F_RXCSUM              |
5765                            NETIF_F_RXHASH              |
5766                            0;
5767
5768         /* copy netdev features into list of user selectable features */
5769         netdev->hw_features |= netdev->features;
5770
5771         if (vsi->type == I40E_VSI_MAIN) {
5772                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
5773                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
5774         } else {
5775                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
5776                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
5777                          pf->vsi[pf->lan_vsi]->netdev->name);
5778                 random_ether_addr(mac_addr);
5779                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
5780         }
5781
5782         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
5783         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
5784         /* vlan gets same features (except vlan offload)
5785          * after any tweaks for specific VSI types
5786          */
5787         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
5788                                                      NETIF_F_HW_VLAN_CTAG_RX |
5789                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
5790         netdev->priv_flags |= IFF_UNICAST_FLT;
5791         netdev->priv_flags |= IFF_SUPP_NOFCS;
5792         /* Setup netdev TC information */
5793         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
5794
5795         netdev->netdev_ops = &i40e_netdev_ops;
5796         netdev->watchdog_timeo = 5 * HZ;
5797         i40e_set_ethtool_ops(netdev);
5798
5799         return 0;
5800 }
5801
5802 /**
5803  * i40e_vsi_delete - Delete a VSI from the switch
5804  * @vsi: the VSI being removed
5805  *
5806  * Returns 0 on success, negative value on failure
5807  **/
5808 static void i40e_vsi_delete(struct i40e_vsi *vsi)
5809 {
5810         /* remove default VSI is not allowed */
5811         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
5812                 return;
5813
5814         /* there is no HW VSI for FDIR */
5815         if (vsi->type == I40E_VSI_FDIR)
5816                 return;
5817
5818         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
5819         return;
5820 }
5821
5822 /**
5823  * i40e_add_vsi - Add a VSI to the switch
5824  * @vsi: the VSI being configured
5825  *
5826  * This initializes a VSI context depending on the VSI type to be added and
5827  * passes it down to the add_vsi aq command.
5828  **/
5829 static int i40e_add_vsi(struct i40e_vsi *vsi)
5830 {
5831         int ret = -ENODEV;
5832         struct i40e_mac_filter *f, *ftmp;
5833         struct i40e_pf *pf = vsi->back;
5834         struct i40e_hw *hw = &pf->hw;
5835         struct i40e_vsi_context ctxt;
5836         u8 enabled_tc = 0x1; /* TC0 enabled */
5837         int f_count = 0;
5838
5839         memset(&ctxt, 0, sizeof(ctxt));
5840         switch (vsi->type) {
5841         case I40E_VSI_MAIN:
5842                 /* The PF's main VSI is already setup as part of the
5843                  * device initialization, so we'll not bother with
5844                  * the add_vsi call, but we will retrieve the current
5845                  * VSI context.
5846                  */
5847                 ctxt.seid = pf->main_vsi_seid;
5848                 ctxt.pf_num = pf->hw.pf_id;
5849                 ctxt.vf_num = 0;
5850                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5851                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5852                 if (ret) {
5853                         dev_info(&pf->pdev->dev,
5854                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
5855                                  ret, pf->hw.aq.asq_last_status);
5856                         return -ENOENT;
5857                 }
5858                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
5859                 vsi->info.valid_sections = 0;
5860
5861                 vsi->seid = ctxt.seid;
5862                 vsi->id = ctxt.vsi_number;
5863
5864                 enabled_tc = i40e_pf_get_tc_map(pf);
5865
5866                 /* MFP mode setup queue map and update VSI */
5867                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5868                         memset(&ctxt, 0, sizeof(ctxt));
5869                         ctxt.seid = pf->main_vsi_seid;
5870                         ctxt.pf_num = pf->hw.pf_id;
5871                         ctxt.vf_num = 0;
5872                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5873                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5874                         if (ret) {
5875                                 dev_info(&pf->pdev->dev,
5876                                          "update vsi failed, aq_err=%d\n",
5877                                          pf->hw.aq.asq_last_status);
5878                                 ret = -ENOENT;
5879                                 goto err;
5880                         }
5881                         /* update the local VSI info queue map */
5882                         i40e_vsi_update_queue_map(vsi, &ctxt);
5883                         vsi->info.valid_sections = 0;
5884                 } else {
5885                         /* Default/Main VSI is only enabled for TC0
5886                          * reconfigure it to enable all TCs that are
5887                          * available on the port in SFP mode.
5888                          */
5889                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5890                         if (ret) {
5891                                 dev_info(&pf->pdev->dev,
5892                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
5893                                          enabled_tc, ret,
5894                                          pf->hw.aq.asq_last_status);
5895                                 ret = -ENOENT;
5896                         }
5897                 }
5898                 break;
5899
5900         case I40E_VSI_FDIR:
5901                 /* no queue mapping or actual HW VSI needed */
5902                 vsi->info.valid_sections = 0;
5903                 vsi->seid = 0;
5904                 vsi->id = 0;
5905                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5906                 return 0;
5907                 break;
5908
5909         case I40E_VSI_VMDQ2:
5910                 ctxt.pf_num = hw->pf_id;
5911                 ctxt.vf_num = 0;
5912                 ctxt.uplink_seid = vsi->uplink_seid;
5913                 ctxt.connection_type = 0x1;     /* regular data port */
5914                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
5915
5916                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5917
5918                 /* This VSI is connected to VEB so the switch_id
5919                  * should be set to zero by default.
5920                  */
5921                 ctxt.info.switch_id = 0;
5922                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
5923                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5924
5925                 /* Setup the VSI tx/rx queue map for TC0 only for now */
5926                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5927                 break;
5928
5929         case I40E_VSI_SRIOV:
5930                 ctxt.pf_num = hw->pf_id;
5931                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
5932                 ctxt.uplink_seid = vsi->uplink_seid;
5933                 ctxt.connection_type = 0x1;     /* regular data port */
5934                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
5935
5936                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5937
5938                 /* This VSI is connected to VEB so the switch_id
5939                  * should be set to zero by default.
5940                  */
5941                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5942
5943                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
5944                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
5945                 /* Setup the VSI tx/rx queue map for TC0 only for now */
5946                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5947                 break;
5948
5949         default:
5950                 return -ENODEV;
5951         }
5952
5953         if (vsi->type != I40E_VSI_MAIN) {
5954                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
5955                 if (ret) {
5956                         dev_info(&vsi->back->pdev->dev,
5957                                  "add vsi failed, aq_err=%d\n",
5958                                  vsi->back->hw.aq.asq_last_status);
5959                         ret = -ENOENT;
5960                         goto err;
5961                 }
5962                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
5963                 vsi->info.valid_sections = 0;
5964                 vsi->seid = ctxt.seid;
5965                 vsi->id = ctxt.vsi_number;
5966         }
5967
5968         /* If macvlan filters already exist, force them to get loaded */
5969         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
5970                 f->changed = true;
5971                 f_count++;
5972         }
5973         if (f_count) {
5974                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
5975                 pf->flags |= I40E_FLAG_FILTER_SYNC;
5976         }
5977
5978         /* Update VSI BW information */
5979         ret = i40e_vsi_get_bw_info(vsi);
5980         if (ret) {
5981                 dev_info(&pf->pdev->dev,
5982                          "couldn't get vsi bw info, err %d, aq_err %d\n",
5983                          ret, pf->hw.aq.asq_last_status);
5984                 /* VSI is already added so not tearing that up */
5985                 ret = 0;
5986         }
5987
5988 err:
5989         return ret;
5990 }
5991
5992 /**
5993  * i40e_vsi_release - Delete a VSI and free its resources
5994  * @vsi: the VSI being removed
5995  *
5996  * Returns 0 on success or < 0 on error
5997  **/
5998 int i40e_vsi_release(struct i40e_vsi *vsi)
5999 {
6000         struct i40e_mac_filter *f, *ftmp;
6001         struct i40e_veb *veb = NULL;
6002         struct i40e_pf *pf;
6003         u16 uplink_seid;
6004         int i, n;
6005
6006         pf = vsi->back;
6007
6008         /* release of a VEB-owner or last VSI is not allowed */
6009         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6010                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6011                          vsi->seid, vsi->uplink_seid);
6012                 return -ENODEV;
6013         }
6014         if (vsi == pf->vsi[pf->lan_vsi] &&
6015             !test_bit(__I40E_DOWN, &pf->state)) {
6016                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6017                 return -ENODEV;
6018         }
6019
6020         uplink_seid = vsi->uplink_seid;
6021         if (vsi->type != I40E_VSI_SRIOV) {
6022                 if (vsi->netdev_registered) {
6023                         vsi->netdev_registered = false;
6024                         if (vsi->netdev) {
6025                                 /* results in a call to i40e_close() */
6026                                 unregister_netdev(vsi->netdev);
6027                                 free_netdev(vsi->netdev);
6028                                 vsi->netdev = NULL;
6029                         }
6030                 } else {
6031                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6032                                 i40e_down(vsi);
6033                         i40e_vsi_free_irq(vsi);
6034                         i40e_vsi_free_tx_resources(vsi);
6035                         i40e_vsi_free_rx_resources(vsi);
6036                 }
6037                 i40e_vsi_disable_irq(vsi);
6038         }
6039
6040         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6041                 i40e_del_filter(vsi, f->macaddr, f->vlan,
6042                                 f->is_vf, f->is_netdev);
6043         i40e_sync_vsi_filters(vsi);
6044
6045         i40e_vsi_delete(vsi);
6046         i40e_vsi_free_q_vectors(vsi);
6047         i40e_vsi_clear_rings(vsi);
6048         i40e_vsi_clear(vsi);
6049
6050         /* If this was the last thing on the VEB, except for the
6051          * controlling VSI, remove the VEB, which puts the controlling
6052          * VSI onto the next level down in the switch.
6053          *
6054          * Well, okay, there's one more exception here: don't remove
6055          * the orphan VEBs yet.  We'll wait for an explicit remove request
6056          * from up the network stack.
6057          */
6058         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6059                 if (pf->vsi[i] &&
6060                     pf->vsi[i]->uplink_seid == uplink_seid &&
6061                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6062                         n++;      /* count the VSIs */
6063                 }
6064         }
6065         for (i = 0; i < I40E_MAX_VEB; i++) {
6066                 if (!pf->veb[i])
6067                         continue;
6068                 if (pf->veb[i]->uplink_seid == uplink_seid)
6069                         n++;     /* count the VEBs */
6070                 if (pf->veb[i]->seid == uplink_seid)
6071                         veb = pf->veb[i];
6072         }
6073         if (n == 0 && veb && veb->uplink_seid != 0)
6074                 i40e_veb_release(veb);
6075
6076         return 0;
6077 }
6078
6079 /**
6080  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
6081  * @vsi: ptr to the VSI
6082  *
6083  * This should only be called after i40e_vsi_mem_alloc() which allocates the
6084  * corresponding SW VSI structure and initializes num_queue_pairs for the
6085  * newly allocated VSI.
6086  *
6087  * Returns 0 on success or negative on failure
6088  **/
6089 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
6090 {
6091         int ret = -ENOENT;
6092         struct i40e_pf *pf = vsi->back;
6093
6094         if (vsi->q_vectors[0]) {
6095                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
6096                          vsi->seid);
6097                 return -EEXIST;
6098         }
6099
6100         if (vsi->base_vector) {
6101                 dev_info(&pf->pdev->dev,
6102                          "VSI %d has non-zero base vector %d\n",
6103                          vsi->seid, vsi->base_vector);
6104                 return -EEXIST;
6105         }
6106
6107         ret = i40e_alloc_q_vectors(vsi);
6108         if (ret) {
6109                 dev_info(&pf->pdev->dev,
6110                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
6111                          vsi->num_q_vectors, vsi->seid, ret);
6112                 vsi->num_q_vectors = 0;
6113                 goto vector_setup_out;
6114         }
6115
6116         if (vsi->num_q_vectors)
6117                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
6118                                                  vsi->num_q_vectors, vsi->idx);
6119         if (vsi->base_vector < 0) {
6120                 dev_info(&pf->pdev->dev,
6121                          "failed to get q tracking for VSI %d, err=%d\n",
6122                          vsi->seid, vsi->base_vector);
6123                 i40e_vsi_free_q_vectors(vsi);
6124                 ret = -ENOENT;
6125                 goto vector_setup_out;
6126         }
6127
6128 vector_setup_out:
6129         return ret;
6130 }
6131
6132 /**
6133  * i40e_vsi_setup - Set up a VSI by a given type
6134  * @pf: board private structure
6135  * @type: VSI type
6136  * @uplink_seid: the switch element to link to
6137  * @param1: usage depends upon VSI type. For VF types, indicates VF id
6138  *
6139  * This allocates the sw VSI structure and its queue resources, then add a VSI
6140  * to the identified VEB.
6141  *
6142  * Returns pointer to the successfully allocated and configure VSI sw struct on
6143  * success, otherwise returns NULL on failure.
6144  **/
6145 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
6146                                 u16 uplink_seid, u32 param1)
6147 {
6148         struct i40e_vsi *vsi = NULL;
6149         struct i40e_veb *veb = NULL;
6150         int ret, i;
6151         int v_idx;
6152
6153         /* The requested uplink_seid must be either
6154          *     - the PF's port seid
6155          *              no VEB is needed because this is the PF
6156          *              or this is a Flow Director special case VSI
6157          *     - seid of an existing VEB
6158          *     - seid of a VSI that owns an existing VEB
6159          *     - seid of a VSI that doesn't own a VEB
6160          *              a new VEB is created and the VSI becomes the owner
6161          *     - seid of the PF VSI, which is what creates the first VEB
6162          *              this is a special case of the previous
6163          *
6164          * Find which uplink_seid we were given and create a new VEB if needed
6165          */
6166         for (i = 0; i < I40E_MAX_VEB; i++) {
6167                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
6168                         veb = pf->veb[i];
6169                         break;
6170                 }
6171         }
6172
6173         if (!veb && uplink_seid != pf->mac_seid) {
6174
6175                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6176                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
6177                                 vsi = pf->vsi[i];
6178                                 break;
6179                         }
6180                 }
6181                 if (!vsi) {
6182                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
6183                                  uplink_seid);
6184                         return NULL;
6185                 }
6186
6187                 if (vsi->uplink_seid == pf->mac_seid)
6188                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
6189                                              vsi->tc_config.enabled_tc);
6190                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
6191                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
6192                                              vsi->tc_config.enabled_tc);
6193
6194                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
6195                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
6196                                 veb = pf->veb[i];
6197                 }
6198                 if (!veb) {
6199                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
6200                         return NULL;
6201                 }
6202
6203                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6204                 uplink_seid = veb->seid;
6205         }
6206
6207         /* get vsi sw struct */
6208         v_idx = i40e_vsi_mem_alloc(pf, type);
6209         if (v_idx < 0)
6210                 goto err_alloc;
6211         vsi = pf->vsi[v_idx];
6212         vsi->type = type;
6213         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
6214
6215         if (type == I40E_VSI_MAIN)
6216                 pf->lan_vsi = v_idx;
6217         else if (type == I40E_VSI_SRIOV)
6218                 vsi->vf_id = param1;
6219         /* assign it some queues */
6220         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
6221         if (ret < 0) {
6222                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
6223                          vsi->seid, ret);
6224                 goto err_vsi;
6225         }
6226         vsi->base_queue = ret;
6227
6228         /* get a VSI from the hardware */
6229         vsi->uplink_seid = uplink_seid;
6230         ret = i40e_add_vsi(vsi);
6231         if (ret)
6232                 goto err_vsi;
6233
6234         switch (vsi->type) {
6235         /* setup the netdev if needed */
6236         case I40E_VSI_MAIN:
6237         case I40E_VSI_VMDQ2:
6238                 ret = i40e_config_netdev(vsi);
6239                 if (ret)
6240                         goto err_netdev;
6241                 ret = register_netdev(vsi->netdev);
6242                 if (ret)
6243                         goto err_netdev;
6244                 vsi->netdev_registered = true;
6245                 netif_carrier_off(vsi->netdev);
6246                 /* fall through */
6247
6248         case I40E_VSI_FDIR:
6249                 /* set up vectors and rings if needed */
6250                 ret = i40e_vsi_setup_vectors(vsi);
6251                 if (ret)
6252                         goto err_msix;
6253
6254                 ret = i40e_alloc_rings(vsi);
6255                 if (ret)
6256                         goto err_rings;
6257
6258                 /* map all of the rings to the q_vectors */
6259                 i40e_vsi_map_rings_to_vectors(vsi);
6260
6261                 i40e_vsi_reset_stats(vsi);
6262                 break;
6263
6264         default:
6265                 /* no netdev or rings for the other VSI types */
6266                 break;
6267         }
6268
6269         return vsi;
6270
6271 err_rings:
6272         i40e_vsi_free_q_vectors(vsi);
6273 err_msix:
6274         if (vsi->netdev_registered) {
6275                 vsi->netdev_registered = false;
6276                 unregister_netdev(vsi->netdev);
6277                 free_netdev(vsi->netdev);
6278                 vsi->netdev = NULL;
6279         }
6280 err_netdev:
6281         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
6282 err_vsi:
6283         i40e_vsi_clear(vsi);
6284 err_alloc:
6285         return NULL;
6286 }
6287
6288 /**
6289  * i40e_veb_get_bw_info - Query VEB BW information
6290  * @veb: the veb to query
6291  *
6292  * Query the Tx scheduler BW configuration data for given VEB
6293  **/
6294 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
6295 {
6296         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
6297         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
6298         struct i40e_pf *pf = veb->pf;
6299         struct i40e_hw *hw = &pf->hw;
6300         u32 tc_bw_max;
6301         int ret = 0;
6302         int i;
6303
6304         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
6305                                                   &bw_data, NULL);
6306         if (ret) {
6307                 dev_info(&pf->pdev->dev,
6308                          "query veb bw config failed, aq_err=%d\n",
6309                          hw->aq.asq_last_status);
6310                 goto out;
6311         }
6312
6313         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
6314                                                    &ets_data, NULL);
6315         if (ret) {
6316                 dev_info(&pf->pdev->dev,
6317                          "query veb bw ets config failed, aq_err=%d\n",
6318                          hw->aq.asq_last_status);
6319                 goto out;
6320         }
6321
6322         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
6323         veb->bw_max_quanta = ets_data.tc_bw_max;
6324         veb->is_abs_credits = bw_data.absolute_credits_enable;
6325         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
6326                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
6327         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6328                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
6329                 veb->bw_tc_limit_credits[i] =
6330                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
6331                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
6332         }
6333
6334 out:
6335         return ret;
6336 }
6337
6338 /**
6339  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
6340  * @pf: board private structure
6341  *
6342  * On error: returns error code (negative)
6343  * On success: returns vsi index in PF (positive)
6344  **/
6345 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
6346 {
6347         int ret = -ENOENT;
6348         struct i40e_veb *veb;
6349         int i;
6350
6351         /* Need to protect the allocation of switch elements at the PF level */
6352         mutex_lock(&pf->switch_mutex);
6353
6354         /* VEB list may be fragmented if VEB creation/destruction has
6355          * been happening.  We can afford to do a quick scan to look
6356          * for any free slots in the list.
6357          *
6358          * find next empty veb slot, looping back around if necessary
6359          */
6360         i = 0;
6361         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
6362                 i++;
6363         if (i >= I40E_MAX_VEB) {
6364                 ret = -ENOMEM;
6365                 goto err_alloc_veb;  /* out of VEB slots! */
6366         }
6367
6368         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
6369         if (!veb) {
6370                 ret = -ENOMEM;
6371                 goto err_alloc_veb;
6372         }
6373         veb->pf = pf;
6374         veb->idx = i;
6375         veb->enabled_tc = 1;
6376
6377         pf->veb[i] = veb;
6378         ret = i;
6379 err_alloc_veb:
6380         mutex_unlock(&pf->switch_mutex);
6381         return ret;
6382 }
6383
6384 /**
6385  * i40e_switch_branch_release - Delete a branch of the switch tree
6386  * @branch: where to start deleting
6387  *
6388  * This uses recursion to find the tips of the branch to be
6389  * removed, deleting until we get back to and can delete this VEB.
6390  **/
6391 static void i40e_switch_branch_release(struct i40e_veb *branch)
6392 {
6393         struct i40e_pf *pf = branch->pf;
6394         u16 branch_seid = branch->seid;
6395         u16 veb_idx = branch->idx;
6396         int i;
6397
6398         /* release any VEBs on this VEB - RECURSION */
6399         for (i = 0; i < I40E_MAX_VEB; i++) {
6400                 if (!pf->veb[i])
6401                         continue;
6402                 if (pf->veb[i]->uplink_seid == branch->seid)
6403                         i40e_switch_branch_release(pf->veb[i]);
6404         }
6405
6406         /* Release the VSIs on this VEB, but not the owner VSI.
6407          *
6408          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
6409          *       the VEB itself, so don't use (*branch) after this loop.
6410          */
6411         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6412                 if (!pf->vsi[i])
6413                         continue;
6414                 if (pf->vsi[i]->uplink_seid == branch_seid &&
6415                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6416                         i40e_vsi_release(pf->vsi[i]);
6417                 }
6418         }
6419
6420         /* There's one corner case where the VEB might not have been
6421          * removed, so double check it here and remove it if needed.
6422          * This case happens if the veb was created from the debugfs
6423          * commands and no VSIs were added to it.
6424          */
6425         if (pf->veb[veb_idx])
6426                 i40e_veb_release(pf->veb[veb_idx]);
6427 }
6428
6429 /**
6430  * i40e_veb_clear - remove veb struct
6431  * @veb: the veb to remove
6432  **/
6433 static void i40e_veb_clear(struct i40e_veb *veb)
6434 {
6435         if (!veb)
6436                 return;
6437
6438         if (veb->pf) {
6439                 struct i40e_pf *pf = veb->pf;
6440
6441                 mutex_lock(&pf->switch_mutex);
6442                 if (pf->veb[veb->idx] == veb)
6443                         pf->veb[veb->idx] = NULL;
6444                 mutex_unlock(&pf->switch_mutex);
6445         }
6446
6447         kfree(veb);
6448 }
6449
6450 /**
6451  * i40e_veb_release - Delete a VEB and free its resources
6452  * @veb: the VEB being removed
6453  **/
6454 void i40e_veb_release(struct i40e_veb *veb)
6455 {
6456         struct i40e_vsi *vsi = NULL;
6457         struct i40e_pf *pf;
6458         int i, n = 0;
6459
6460         pf = veb->pf;
6461
6462         /* find the remaining VSI and check for extras */
6463         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6464                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
6465                         n++;
6466                         vsi = pf->vsi[i];
6467                 }
6468         }
6469         if (n != 1) {
6470                 dev_info(&pf->pdev->dev,
6471                          "can't remove VEB %d with %d VSIs left\n",
6472                          veb->seid, n);
6473                 return;
6474         }
6475
6476         /* move the remaining VSI to uplink veb */
6477         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
6478         if (veb->uplink_seid) {
6479                 vsi->uplink_seid = veb->uplink_seid;
6480                 if (veb->uplink_seid == pf->mac_seid)
6481                         vsi->veb_idx = I40E_NO_VEB;
6482                 else
6483                         vsi->veb_idx = veb->veb_idx;
6484         } else {
6485                 /* floating VEB */
6486                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6487                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
6488         }
6489
6490         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
6491         i40e_veb_clear(veb);
6492
6493         return;
6494 }
6495
6496 /**
6497  * i40e_add_veb - create the VEB in the switch
6498  * @veb: the VEB to be instantiated
6499  * @vsi: the controlling VSI
6500  **/
6501 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
6502 {
6503         bool is_default = (vsi->idx == vsi->back->lan_vsi);
6504         int ret;
6505
6506         /* get a VEB from the hardware */
6507         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
6508                               veb->enabled_tc, is_default, &veb->seid, NULL);
6509         if (ret) {
6510                 dev_info(&veb->pf->pdev->dev,
6511                          "couldn't add VEB, err %d, aq_err %d\n",
6512                          ret, veb->pf->hw.aq.asq_last_status);
6513                 return -EPERM;
6514         }
6515
6516         /* get statistics counter */
6517         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
6518                                          &veb->stats_idx, NULL, NULL, NULL);
6519         if (ret) {
6520                 dev_info(&veb->pf->pdev->dev,
6521                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
6522                          ret, veb->pf->hw.aq.asq_last_status);
6523                 return -EPERM;
6524         }
6525         ret = i40e_veb_get_bw_info(veb);
6526         if (ret) {
6527                 dev_info(&veb->pf->pdev->dev,
6528                          "couldn't get VEB bw info, err %d, aq_err %d\n",
6529                          ret, veb->pf->hw.aq.asq_last_status);
6530                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
6531                 return -ENOENT;
6532         }
6533
6534         vsi->uplink_seid = veb->seid;
6535         vsi->veb_idx = veb->idx;
6536         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6537
6538         return 0;
6539 }
6540
6541 /**
6542  * i40e_veb_setup - Set up a VEB
6543  * @pf: board private structure
6544  * @flags: VEB setup flags
6545  * @uplink_seid: the switch element to link to
6546  * @vsi_seid: the initial VSI seid
6547  * @enabled_tc: Enabled TC bit-map
6548  *
6549  * This allocates the sw VEB structure and links it into the switch
6550  * It is possible and legal for this to be a duplicate of an already
6551  * existing VEB.  It is also possible for both uplink and vsi seids
6552  * to be zero, in order to create a floating VEB.
6553  *
6554  * Returns pointer to the successfully allocated VEB sw struct on
6555  * success, otherwise returns NULL on failure.
6556  **/
6557 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
6558                                 u16 uplink_seid, u16 vsi_seid,
6559                                 u8 enabled_tc)
6560 {
6561         struct i40e_veb *veb, *uplink_veb = NULL;
6562         int vsi_idx, veb_idx;
6563         int ret;
6564
6565         /* if one seid is 0, the other must be 0 to create a floating relay */
6566         if ((uplink_seid == 0 || vsi_seid == 0) &&
6567             (uplink_seid + vsi_seid != 0)) {
6568                 dev_info(&pf->pdev->dev,
6569                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
6570                          uplink_seid, vsi_seid);
6571                 return NULL;
6572         }
6573
6574         /* make sure there is such a vsi and uplink */
6575         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
6576                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
6577                         break;
6578         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
6579                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
6580                          vsi_seid);
6581                 return NULL;
6582         }
6583
6584         if (uplink_seid && uplink_seid != pf->mac_seid) {
6585                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6586                         if (pf->veb[veb_idx] &&
6587                             pf->veb[veb_idx]->seid == uplink_seid) {
6588                                 uplink_veb = pf->veb[veb_idx];
6589                                 break;
6590                         }
6591                 }
6592                 if (!uplink_veb) {
6593                         dev_info(&pf->pdev->dev,
6594                                  "uplink seid %d not found\n", uplink_seid);
6595                         return NULL;
6596                 }
6597         }
6598
6599         /* get veb sw struct */
6600         veb_idx = i40e_veb_mem_alloc(pf);
6601         if (veb_idx < 0)
6602                 goto err_alloc;
6603         veb = pf->veb[veb_idx];
6604         veb->flags = flags;
6605         veb->uplink_seid = uplink_seid;
6606         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
6607         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
6608
6609         /* create the VEB in the switch */
6610         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
6611         if (ret)
6612                 goto err_veb;
6613
6614         return veb;
6615
6616 err_veb:
6617         i40e_veb_clear(veb);
6618 err_alloc:
6619         return NULL;
6620 }
6621
6622 /**
6623  * i40e_setup_pf_switch_element - set pf vars based on switch type
6624  * @pf: board private structure
6625  * @ele: element we are building info from
6626  * @num_reported: total number of elements
6627  * @printconfig: should we print the contents
6628  *
6629  * helper function to assist in extracting a few useful SEID values.
6630  **/
6631 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
6632                                 struct i40e_aqc_switch_config_element_resp *ele,
6633                                 u16 num_reported, bool printconfig)
6634 {
6635         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
6636         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
6637         u8 element_type = ele->element_type;
6638         u16 seid = le16_to_cpu(ele->seid);
6639
6640         if (printconfig)
6641                 dev_info(&pf->pdev->dev,
6642                          "type=%d seid=%d uplink=%d downlink=%d\n",
6643                          element_type, seid, uplink_seid, downlink_seid);
6644
6645         switch (element_type) {
6646         case I40E_SWITCH_ELEMENT_TYPE_MAC:
6647                 pf->mac_seid = seid;
6648                 break;
6649         case I40E_SWITCH_ELEMENT_TYPE_VEB:
6650                 /* Main VEB? */
6651                 if (uplink_seid != pf->mac_seid)
6652                         break;
6653                 if (pf->lan_veb == I40E_NO_VEB) {
6654                         int v;
6655
6656                         /* find existing or else empty VEB */
6657                         for (v = 0; v < I40E_MAX_VEB; v++) {
6658                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
6659                                         pf->lan_veb = v;
6660                                         break;
6661                                 }
6662                         }
6663                         if (pf->lan_veb == I40E_NO_VEB) {
6664                                 v = i40e_veb_mem_alloc(pf);
6665                                 if (v < 0)
6666                                         break;
6667                                 pf->lan_veb = v;
6668                         }
6669                 }
6670
6671                 pf->veb[pf->lan_veb]->seid = seid;
6672                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
6673                 pf->veb[pf->lan_veb]->pf = pf;
6674                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
6675                 break;
6676         case I40E_SWITCH_ELEMENT_TYPE_VSI:
6677                 if (num_reported != 1)
6678                         break;
6679                 /* This is immediately after a reset so we can assume this is
6680                  * the PF's VSI
6681                  */
6682                 pf->mac_seid = uplink_seid;
6683                 pf->pf_seid = downlink_seid;
6684                 pf->main_vsi_seid = seid;
6685                 if (printconfig)
6686                         dev_info(&pf->pdev->dev,
6687                                  "pf_seid=%d main_vsi_seid=%d\n",
6688                                  pf->pf_seid, pf->main_vsi_seid);
6689                 break;
6690         case I40E_SWITCH_ELEMENT_TYPE_PF:
6691         case I40E_SWITCH_ELEMENT_TYPE_VF:
6692         case I40E_SWITCH_ELEMENT_TYPE_EMP:
6693         case I40E_SWITCH_ELEMENT_TYPE_BMC:
6694         case I40E_SWITCH_ELEMENT_TYPE_PE:
6695         case I40E_SWITCH_ELEMENT_TYPE_PA:
6696                 /* ignore these for now */
6697                 break;
6698         default:
6699                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
6700                          element_type, seid);
6701                 break;
6702         }
6703 }
6704
6705 /**
6706  * i40e_fetch_switch_configuration - Get switch config from firmware
6707  * @pf: board private structure
6708  * @printconfig: should we print the contents
6709  *
6710  * Get the current switch configuration from the device and
6711  * extract a few useful SEID values.
6712  **/
6713 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
6714 {
6715         struct i40e_aqc_get_switch_config_resp *sw_config;
6716         u16 next_seid = 0;
6717         int ret = 0;
6718         u8 *aq_buf;
6719         int i;
6720
6721         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
6722         if (!aq_buf)
6723                 return -ENOMEM;
6724
6725         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
6726         do {
6727                 u16 num_reported, num_total;
6728
6729                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
6730                                                 I40E_AQ_LARGE_BUF,
6731                                                 &next_seid, NULL);
6732                 if (ret) {
6733                         dev_info(&pf->pdev->dev,
6734                                  "get switch config failed %d aq_err=%x\n",
6735                                  ret, pf->hw.aq.asq_last_status);
6736                         kfree(aq_buf);
6737                         return -ENOENT;
6738                 }
6739
6740                 num_reported = le16_to_cpu(sw_config->header.num_reported);
6741                 num_total = le16_to_cpu(sw_config->header.num_total);
6742
6743                 if (printconfig)
6744                         dev_info(&pf->pdev->dev,
6745                                  "header: %d reported %d total\n",
6746                                  num_reported, num_total);
6747
6748                 if (num_reported) {
6749                         int sz = sizeof(*sw_config) * num_reported;
6750
6751                         kfree(pf->sw_config);
6752                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
6753                         if (pf->sw_config)
6754                                 memcpy(pf->sw_config, sw_config, sz);
6755                 }
6756
6757                 for (i = 0; i < num_reported; i++) {
6758                         struct i40e_aqc_switch_config_element_resp *ele =
6759                                 &sw_config->element[i];
6760
6761                         i40e_setup_pf_switch_element(pf, ele, num_reported,
6762                                                      printconfig);
6763                 }
6764         } while (next_seid != 0);
6765
6766         kfree(aq_buf);
6767         return ret;
6768 }
6769
6770 /**
6771  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
6772  * @pf: board private structure
6773  *
6774  * Returns 0 on success, negative value on failure
6775  **/
6776 static int i40e_setup_pf_switch(struct i40e_pf *pf)
6777 {
6778         int ret;
6779
6780         /* find out what's out there already */
6781         ret = i40e_fetch_switch_configuration(pf, false);
6782         if (ret) {
6783                 dev_info(&pf->pdev->dev,
6784                          "couldn't fetch switch config, err %d, aq_err %d\n",
6785                          ret, pf->hw.aq.asq_last_status);
6786                 return ret;
6787         }
6788         i40e_pf_reset_stats(pf);
6789
6790         /* fdir VSI must happen first to be sure it gets queue 0, but only
6791          * if there is enough room for the fdir VSI
6792          */
6793         if (pf->num_lan_qps > 1)
6794                 i40e_fdir_setup(pf);
6795
6796         /* first time setup */
6797         if (pf->lan_vsi == I40E_NO_VSI) {
6798                 struct i40e_vsi *vsi = NULL;
6799                 u16 uplink_seid;
6800
6801                 /* Set up the PF VSI associated with the PF's main VSI
6802                  * that is already in the HW switch
6803                  */
6804                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6805                         uplink_seid = pf->veb[pf->lan_veb]->seid;
6806                 else
6807                         uplink_seid = pf->mac_seid;
6808
6809                 vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
6810                 if (!vsi) {
6811                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
6812                         i40e_fdir_teardown(pf);
6813                         return -EAGAIN;
6814                 }
6815                 /* accommodate kcompat by copying the main VSI queue count
6816                  * into the pf, since this newer code pushes the pf queue
6817                  * info down a level into a VSI
6818                  */
6819                 pf->num_rx_queues = vsi->alloc_queue_pairs;
6820                 pf->num_tx_queues = vsi->alloc_queue_pairs;
6821         } else {
6822                 /* force a reset of TC and queue layout configurations */
6823                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
6824                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
6825                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
6826                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
6827         }
6828         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
6829
6830         /* Setup static PF queue filter control settings */
6831         ret = i40e_setup_pf_filter_control(pf);
6832         if (ret) {
6833                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
6834                          ret);
6835                 /* Failure here should not stop continuing other steps */
6836         }
6837
6838         /* enable RSS in the HW, even for only one queue, as the stack can use
6839          * the hash
6840          */
6841         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
6842                 i40e_config_rss(pf);
6843
6844         /* fill in link information and enable LSE reporting */
6845         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
6846         i40e_link_event(pf);
6847
6848         /* Initialize user-specifics link properties */
6849         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
6850                                   I40E_AQ_AN_COMPLETED) ? true : false);
6851         pf->hw.fc.requested_mode = I40E_FC_DEFAULT;
6852         if (pf->hw.phy.link_info.an_info &
6853            (I40E_AQ_LINK_PAUSE_TX | I40E_AQ_LINK_PAUSE_RX))
6854                 pf->hw.fc.current_mode = I40E_FC_FULL;
6855         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
6856                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
6857         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
6858                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
6859         else
6860                 pf->hw.fc.current_mode = I40E_FC_DEFAULT;
6861
6862         return ret;
6863 }
6864
6865 /**
6866  * i40e_set_rss_size - helper to set rss_size
6867  * @pf: board private structure
6868  * @queues_left: how many queues
6869  */
6870 static u16 i40e_set_rss_size(struct i40e_pf *pf, int queues_left)
6871 {
6872         int num_tc0;
6873
6874         num_tc0 = min_t(int, queues_left, pf->rss_size_max);
6875         num_tc0 = min_t(int, num_tc0, nr_cpus_node(numa_node_id()));
6876         num_tc0 = rounddown_pow_of_two(num_tc0);
6877
6878         return num_tc0;
6879 }
6880
6881 /**
6882  * i40e_determine_queue_usage - Work out queue distribution
6883  * @pf: board private structure
6884  **/
6885 static void i40e_determine_queue_usage(struct i40e_pf *pf)
6886 {
6887         int accum_tc_size;
6888         int queues_left;
6889
6890         pf->num_lan_qps = 0;
6891         pf->num_tc_qps = rounddown_pow_of_two(pf->num_tc_qps);
6892         accum_tc_size = (I40E_MAX_TRAFFIC_CLASS - 1) * pf->num_tc_qps;
6893
6894         /* Find the max queues to be put into basic use.  We'll always be
6895          * using TC0, whether or not DCB is running, and TC0 will get the
6896          * big RSS set.
6897          */
6898         queues_left = pf->hw.func_caps.num_tx_qp;
6899
6900         if   (!((pf->flags & I40E_FLAG_MSIX_ENABLED)             &&
6901                 (pf->flags & I40E_FLAG_MQ_ENABLED))              ||
6902                 !(pf->flags & (I40E_FLAG_RSS_ENABLED |
6903                 I40E_FLAG_FDIR_ENABLED | I40E_FLAG_DCB_ENABLED)) ||
6904                 (queues_left == 1)) {
6905
6906                 /* one qp for PF, no queues for anything else */
6907                 queues_left = 0;
6908                 pf->rss_size = pf->num_lan_qps = 1;
6909
6910                 /* make sure all the fancies are disabled */
6911                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED       |
6912                                 I40E_FLAG_MQ_ENABLED       |
6913                                 I40E_FLAG_FDIR_ENABLED     |
6914                                 I40E_FLAG_FDIR_ATR_ENABLED |
6915                                 I40E_FLAG_DCB_ENABLED      |
6916                                 I40E_FLAG_SRIOV_ENABLED    |
6917                                 I40E_FLAG_VMDQ_ENABLED);
6918
6919         } else if (pf->flags & I40E_FLAG_RSS_ENABLED      &&
6920                    !(pf->flags & I40E_FLAG_FDIR_ENABLED)  &&
6921                    !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
6922
6923                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6924
6925                 queues_left -= pf->rss_size;
6926                 pf->num_lan_qps = pf->rss_size;
6927
6928         } else if (pf->flags & I40E_FLAG_RSS_ENABLED      &&
6929                    !(pf->flags & I40E_FLAG_FDIR_ENABLED)  &&
6930                    (pf->flags & I40E_FLAG_DCB_ENABLED)) {
6931
6932                 /* save num_tc_qps queues for TCs 1 thru 7 and the rest
6933                  * are set up for RSS in TC0
6934                  */
6935                 queues_left -= accum_tc_size;
6936
6937                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6938
6939                 queues_left -= pf->rss_size;
6940                 if (queues_left < 0) {
6941                         dev_info(&pf->pdev->dev, "not enough queues for DCB\n");
6942                         return;
6943                 }
6944
6945                 pf->num_lan_qps = pf->rss_size + accum_tc_size;
6946
6947         } else if (pf->flags & I40E_FLAG_RSS_ENABLED   &&
6948                   (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
6949                   !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
6950
6951                 queues_left -= 1; /* save 1 queue for FD */
6952
6953                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6954
6955                 queues_left -= pf->rss_size;
6956                 if (queues_left < 0) {
6957                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director\n");
6958                         return;
6959                 }
6960
6961                 pf->num_lan_qps = pf->rss_size;
6962
6963         } else if (pf->flags & I40E_FLAG_RSS_ENABLED   &&
6964                   (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
6965                   (pf->flags & I40E_FLAG_DCB_ENABLED)) {
6966
6967                 /* save 1 queue for TCs 1 thru 7,
6968                  * 1 queue for flow director,
6969                  * and the rest are set up for RSS in TC0
6970                  */
6971                 queues_left -= 1;
6972                 queues_left -= accum_tc_size;
6973
6974                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6975                 queues_left -= pf->rss_size;
6976                 if (queues_left < 0) {
6977                         dev_info(&pf->pdev->dev, "not enough queues for DCB and Flow Director\n");
6978                         return;
6979                 }
6980
6981                 pf->num_lan_qps = pf->rss_size + accum_tc_size;
6982
6983         } else {
6984                 dev_info(&pf->pdev->dev,
6985                          "Invalid configuration, flags=0x%08llx\n", pf->flags);
6986                 return;
6987         }
6988
6989         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
6990             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
6991                 pf->num_req_vfs = min_t(int, pf->num_req_vfs, (queues_left /
6992                                                                pf->num_vf_qps));
6993                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
6994         }
6995
6996         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6997             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
6998                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
6999                                           (queues_left / pf->num_vmdq_qps));
7000                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
7001         }
7002
7003         return;
7004 }
7005
7006 /**
7007  * i40e_setup_pf_filter_control - Setup PF static filter control
7008  * @pf: PF to be setup
7009  *
7010  * i40e_setup_pf_filter_control sets up a pf's initial filter control
7011  * settings. If PE/FCoE are enabled then it will also set the per PF
7012  * based filter sizes required for them. It also enables Flow director,
7013  * ethertype and macvlan type filter settings for the pf.
7014  *
7015  * Returns 0 on success, negative on failure
7016  **/
7017 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
7018 {
7019         struct i40e_filter_control_settings *settings = &pf->filter_settings;
7020
7021         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
7022
7023         /* Flow Director is enabled */
7024         if (pf->flags & (I40E_FLAG_FDIR_ENABLED | I40E_FLAG_FDIR_ATR_ENABLED))
7025                 settings->enable_fdir = true;
7026
7027         /* Ethtype and MACVLAN filters enabled for PF */
7028         settings->enable_ethtype = true;
7029         settings->enable_macvlan = true;
7030
7031         if (i40e_set_filter_control(&pf->hw, settings))
7032                 return -ENOENT;
7033
7034         return 0;
7035 }
7036
7037 /**
7038  * i40e_probe - Device initialization routine
7039  * @pdev: PCI device information struct
7040  * @ent: entry in i40e_pci_tbl
7041  *
7042  * i40e_probe initializes a pf identified by a pci_dev structure.
7043  * The OS initialization, configuring of the pf private structure,
7044  * and a hardware reset occur.
7045  *
7046  * Returns 0 on success, negative on failure
7047  **/
7048 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7049 {
7050         struct i40e_driver_version dv;
7051         struct i40e_pf *pf;
7052         struct i40e_hw *hw;
7053         int err = 0;
7054         u32 len;
7055
7056         err = pci_enable_device_mem(pdev);
7057         if (err)
7058                 return err;
7059
7060         /* set up for high or low dma */
7061         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
7062                 /* coherent mask for the same size will always succeed if
7063                  * dma_set_mask does
7064                  */
7065                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
7066         } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
7067                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7068         } else {
7069                 dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
7070                 err = -EIO;
7071                 goto err_dma;
7072         }
7073
7074         /* set up pci connections */
7075         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
7076                                            IORESOURCE_MEM), i40e_driver_name);
7077         if (err) {
7078                 dev_info(&pdev->dev,
7079                          "pci_request_selected_regions failed %d\n", err);
7080                 goto err_pci_reg;
7081         }
7082
7083         pci_enable_pcie_error_reporting(pdev);
7084         pci_set_master(pdev);
7085
7086         /* Now that we have a PCI connection, we need to do the
7087          * low level device setup.  This is primarily setting up
7088          * the Admin Queue structures and then querying for the
7089          * device's current profile information.
7090          */
7091         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
7092         if (!pf) {
7093                 err = -ENOMEM;
7094                 goto err_pf_alloc;
7095         }
7096         pf->next_vsi = 0;
7097         pf->pdev = pdev;
7098         set_bit(__I40E_DOWN, &pf->state);
7099
7100         hw = &pf->hw;
7101         hw->back = pf;
7102         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
7103                               pci_resource_len(pdev, 0));
7104         if (!hw->hw_addr) {
7105                 err = -EIO;
7106                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
7107                          (unsigned int)pci_resource_start(pdev, 0),
7108                          (unsigned int)pci_resource_len(pdev, 0), err);
7109                 goto err_ioremap;
7110         }
7111         hw->vendor_id = pdev->vendor;
7112         hw->device_id = pdev->device;
7113         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
7114         hw->subsystem_vendor_id = pdev->subsystem_vendor;
7115         hw->subsystem_device_id = pdev->subsystem_device;
7116         hw->bus.device = PCI_SLOT(pdev->devfn);
7117         hw->bus.func = PCI_FUNC(pdev->devfn);
7118
7119         /* Reset here to make sure all is clean and to define PF 'n' */
7120         err = i40e_pf_reset(hw);
7121         if (err) {
7122                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
7123                 goto err_pf_reset;
7124         }
7125         pf->pfr_count++;
7126
7127         hw->aq.num_arq_entries = I40E_AQ_LEN;
7128         hw->aq.num_asq_entries = I40E_AQ_LEN;
7129         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7130         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7131         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
7132         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
7133                  "%s-pf%d:misc",
7134                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
7135
7136         err = i40e_init_shared_code(hw);
7137         if (err) {
7138                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
7139                 goto err_pf_reset;
7140         }
7141
7142         err = i40e_init_adminq(hw);
7143         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
7144         if (err) {
7145                 dev_info(&pdev->dev,
7146                          "init_adminq failed: %d expecting API %02x.%02x\n",
7147                          err,
7148                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
7149                 goto err_pf_reset;
7150         }
7151
7152         err = i40e_get_capabilities(pf);
7153         if (err)
7154                 goto err_adminq_setup;
7155
7156         err = i40e_sw_init(pf);
7157         if (err) {
7158                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
7159                 goto err_sw_init;
7160         }
7161
7162         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7163                                 hw->func_caps.num_rx_qp,
7164                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7165         if (err) {
7166                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
7167                 goto err_init_lan_hmc;
7168         }
7169
7170         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7171         if (err) {
7172                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
7173                 err = -ENOENT;
7174                 goto err_configure_lan_hmc;
7175         }
7176
7177         i40e_get_mac_addr(hw, hw->mac.addr);
7178         if (i40e_validate_mac_addr(hw->mac.addr)) {
7179                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
7180                 err = -EIO;
7181                 goto err_mac_addr;
7182         }
7183         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
7184         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
7185
7186         pci_set_drvdata(pdev, pf);
7187         pci_save_state(pdev);
7188
7189         /* set up periodic task facility */
7190         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
7191         pf->service_timer_period = HZ;
7192
7193         INIT_WORK(&pf->service_task, i40e_service_task);
7194         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7195         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
7196         pf->link_check_timeout = jiffies;
7197
7198         /* set up the main switch operations */
7199         i40e_determine_queue_usage(pf);
7200         i40e_init_interrupt_scheme(pf);
7201
7202         /* Set up the *vsi struct based on the number of VSIs in the HW,
7203          * and set up our local tracking of the MAIN PF vsi.
7204          */
7205         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
7206         pf->vsi = kzalloc(len, GFP_KERNEL);
7207         if (!pf->vsi) {
7208                 err = -ENOMEM;
7209                 goto err_switch_setup;
7210         }
7211
7212         err = i40e_setup_pf_switch(pf);
7213         if (err) {
7214                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
7215                 goto err_vsis;
7216         }
7217
7218         /* The main driver is (mostly) up and happy. We need to set this state
7219          * before setting up the misc vector or we get a race and the vector
7220          * ends up disabled forever.
7221          */
7222         clear_bit(__I40E_DOWN, &pf->state);
7223
7224         /* In case of MSIX we are going to setup the misc vector right here
7225          * to handle admin queue events etc. In case of legacy and MSI
7226          * the misc functionality and queue processing is combined in
7227          * the same vector and that gets setup at open.
7228          */
7229         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7230                 err = i40e_setup_misc_vector(pf);
7231                 if (err) {
7232                         dev_info(&pdev->dev,
7233                                  "setup of misc vector failed: %d\n", err);
7234                         goto err_vsis;
7235                 }
7236         }
7237
7238         /* prep for VF support */
7239         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7240             (pf->flags & I40E_FLAG_MSIX_ENABLED)) {
7241                 u32 val;
7242
7243                 /* disable link interrupts for VFs */
7244                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
7245                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
7246                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
7247                 i40e_flush(hw);
7248         }
7249
7250         i40e_dbg_pf_init(pf);
7251
7252         /* tell the firmware that we're starting */
7253         dv.major_version = DRV_VERSION_MAJOR;
7254         dv.minor_version = DRV_VERSION_MINOR;
7255         dv.build_version = DRV_VERSION_BUILD;
7256         dv.subbuild_version = 0;
7257         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
7258
7259         /* since everything's happy, start the service_task timer */
7260         mod_timer(&pf->service_timer,
7261                   round_jiffies(jiffies + pf->service_timer_period));
7262
7263         return 0;
7264
7265         /* Unwind what we've done if something failed in the setup */
7266 err_vsis:
7267         set_bit(__I40E_DOWN, &pf->state);
7268 err_switch_setup:
7269         i40e_clear_interrupt_scheme(pf);
7270         kfree(pf->vsi);
7271         del_timer_sync(&pf->service_timer);
7272 err_mac_addr:
7273 err_configure_lan_hmc:
7274         (void)i40e_shutdown_lan_hmc(hw);
7275 err_init_lan_hmc:
7276         kfree(pf->qp_pile);
7277         kfree(pf->irq_pile);
7278 err_sw_init:
7279 err_adminq_setup:
7280         (void)i40e_shutdown_adminq(hw);
7281 err_pf_reset:
7282         iounmap(hw->hw_addr);
7283 err_ioremap:
7284         kfree(pf);
7285 err_pf_alloc:
7286         pci_disable_pcie_error_reporting(pdev);
7287         pci_release_selected_regions(pdev,
7288                                      pci_select_bars(pdev, IORESOURCE_MEM));
7289 err_pci_reg:
7290 err_dma:
7291         pci_disable_device(pdev);
7292         return err;
7293 }
7294
7295 /**
7296  * i40e_remove - Device removal routine
7297  * @pdev: PCI device information struct
7298  *
7299  * i40e_remove is called by the PCI subsystem to alert the driver
7300  * that is should release a PCI device.  This could be caused by a
7301  * Hot-Plug event, or because the driver is going to be removed from
7302  * memory.
7303  **/
7304 static void i40e_remove(struct pci_dev *pdev)
7305 {
7306         struct i40e_pf *pf = pci_get_drvdata(pdev);
7307         i40e_status ret_code;
7308         u32 reg;
7309         int i;
7310
7311         i40e_dbg_pf_exit(pf);
7312
7313         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7314                 i40e_free_vfs(pf);
7315                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
7316         }
7317
7318         /* no more scheduling of any task */
7319         set_bit(__I40E_DOWN, &pf->state);
7320         del_timer_sync(&pf->service_timer);
7321         cancel_work_sync(&pf->service_task);
7322
7323         i40e_fdir_teardown(pf);
7324
7325         /* If there is a switch structure or any orphans, remove them.
7326          * This will leave only the PF's VSI remaining.
7327          */
7328         for (i = 0; i < I40E_MAX_VEB; i++) {
7329                 if (!pf->veb[i])
7330                         continue;
7331
7332                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
7333                     pf->veb[i]->uplink_seid == 0)
7334                         i40e_switch_branch_release(pf->veb[i]);
7335         }
7336
7337         /* Now we can shutdown the PF's VSI, just before we kill
7338          * adminq and hmc.
7339          */
7340         if (pf->vsi[pf->lan_vsi])
7341                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
7342
7343         i40e_stop_misc_vector(pf);
7344         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7345                 synchronize_irq(pf->msix_entries[0].vector);
7346                 free_irq(pf->msix_entries[0].vector, pf);
7347         }
7348
7349         /* shutdown and destroy the HMC */
7350         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
7351         if (ret_code)
7352                 dev_warn(&pdev->dev,
7353                          "Failed to destroy the HMC resources: %d\n", ret_code);
7354
7355         /* shutdown the adminq */
7356         i40e_aq_queue_shutdown(&pf->hw, true);
7357         ret_code = i40e_shutdown_adminq(&pf->hw);
7358         if (ret_code)
7359                 dev_warn(&pdev->dev,
7360                          "Failed to destroy the Admin Queue resources: %d\n",
7361                          ret_code);
7362
7363         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
7364         i40e_clear_interrupt_scheme(pf);
7365         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7366                 if (pf->vsi[i]) {
7367                         i40e_vsi_clear_rings(pf->vsi[i]);
7368                         i40e_vsi_clear(pf->vsi[i]);
7369                         pf->vsi[i] = NULL;
7370                 }
7371         }
7372
7373         for (i = 0; i < I40E_MAX_VEB; i++) {
7374                 kfree(pf->veb[i]);
7375                 pf->veb[i] = NULL;
7376         }
7377
7378         kfree(pf->qp_pile);
7379         kfree(pf->irq_pile);
7380         kfree(pf->sw_config);
7381         kfree(pf->vsi);
7382
7383         /* force a PF reset to clean anything leftover */
7384         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
7385         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
7386         i40e_flush(&pf->hw);
7387
7388         iounmap(pf->hw.hw_addr);
7389         kfree(pf);
7390         pci_release_selected_regions(pdev,
7391                                      pci_select_bars(pdev, IORESOURCE_MEM));
7392
7393         pci_disable_pcie_error_reporting(pdev);
7394         pci_disable_device(pdev);
7395 }
7396
7397 /**
7398  * i40e_pci_error_detected - warning that something funky happened in PCI land
7399  * @pdev: PCI device information struct
7400  *
7401  * Called to warn that something happened and the error handling steps
7402  * are in progress.  Allows the driver to quiesce things, be ready for
7403  * remediation.
7404  **/
7405 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
7406                                                 enum pci_channel_state error)
7407 {
7408         struct i40e_pf *pf = pci_get_drvdata(pdev);
7409
7410         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
7411
7412         /* shutdown all operations */
7413         i40e_pf_quiesce_all_vsi(pf);
7414
7415         /* Request a slot reset */
7416         return PCI_ERS_RESULT_NEED_RESET;
7417 }
7418
7419 /**
7420  * i40e_pci_error_slot_reset - a PCI slot reset just happened
7421  * @pdev: PCI device information struct
7422  *
7423  * Called to find if the driver can work with the device now that
7424  * the pci slot has been reset.  If a basic connection seems good
7425  * (registers are readable and have sane content) then return a
7426  * happy little PCI_ERS_RESULT_xxx.
7427  **/
7428 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
7429 {
7430         struct i40e_pf *pf = pci_get_drvdata(pdev);
7431         pci_ers_result_t result;
7432         int err;
7433         u32 reg;
7434
7435         dev_info(&pdev->dev, "%s\n", __func__);
7436         if (pci_enable_device_mem(pdev)) {
7437                 dev_info(&pdev->dev,
7438                          "Cannot re-enable PCI device after reset.\n");
7439                 result = PCI_ERS_RESULT_DISCONNECT;
7440         } else {
7441                 pci_set_master(pdev);
7442                 pci_restore_state(pdev);
7443                 pci_save_state(pdev);
7444                 pci_wake_from_d3(pdev, false);
7445
7446                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
7447                 if (reg == 0)
7448                         result = PCI_ERS_RESULT_RECOVERED;
7449                 else
7450                         result = PCI_ERS_RESULT_DISCONNECT;
7451         }
7452
7453         err = pci_cleanup_aer_uncorrect_error_status(pdev);
7454         if (err) {
7455                 dev_info(&pdev->dev,
7456                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
7457                          err);
7458                 /* non-fatal, continue */
7459         }
7460
7461         return result;
7462 }
7463
7464 /**
7465  * i40e_pci_error_resume - restart operations after PCI error recovery
7466  * @pdev: PCI device information struct
7467  *
7468  * Called to allow the driver to bring things back up after PCI error
7469  * and/or reset recovery has finished.
7470  **/
7471 static void i40e_pci_error_resume(struct pci_dev *pdev)
7472 {
7473         struct i40e_pf *pf = pci_get_drvdata(pdev);
7474
7475         dev_info(&pdev->dev, "%s\n", __func__);
7476         i40e_handle_reset_warning(pf);
7477 }
7478
7479 static const struct pci_error_handlers i40e_err_handler = {
7480         .error_detected = i40e_pci_error_detected,
7481         .slot_reset = i40e_pci_error_slot_reset,
7482         .resume = i40e_pci_error_resume,
7483 };
7484
7485 static struct pci_driver i40e_driver = {
7486         .name     = i40e_driver_name,
7487         .id_table = i40e_pci_tbl,
7488         .probe    = i40e_probe,
7489         .remove   = i40e_remove,
7490         .err_handler = &i40e_err_handler,
7491         .sriov_configure = i40e_pci_sriov_configure,
7492 };
7493
7494 /**
7495  * i40e_init_module - Driver registration routine
7496  *
7497  * i40e_init_module is the first routine called when the driver is
7498  * loaded. All it does is register with the PCI subsystem.
7499  **/
7500 static int __init i40e_init_module(void)
7501 {
7502         pr_info("%s: %s - version %s\n", i40e_driver_name,
7503                 i40e_driver_string, i40e_driver_version_str);
7504         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
7505         i40e_dbg_init();
7506         return pci_register_driver(&i40e_driver);
7507 }
7508 module_init(i40e_init_module);
7509
7510 /**
7511  * i40e_exit_module - Driver exit cleanup routine
7512  *
7513  * i40e_exit_module is called just before the driver is removed
7514  * from memory.
7515  **/
7516 static void __exit i40e_exit_module(void)
7517 {
7518         pci_unregister_driver(&i40e_driver);
7519         i40e_dbg_exit();
7520 }
7521 module_exit(i40e_exit_module);