Pileus Git - ~andy/linux/blob - 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         if (!vsi->tx_rings)
 358                 return stats;
 359
 360         rcu_read_lock();
 361         for (i = 0; i < vsi->num_queue_pairs; i++) {
 362                 struct i40e_ring *tx_ring, *rx_ring;
 363                 u64 bytes, packets;
 364                 unsigned int start;
 365
 366                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 367                 if (!tx_ring)
 368                         continue;
 369
 370                 do {
 371                         start = u64_stats_fetch_begin_bh(&tx_ring->syncp);
 372                         packets = tx_ring->stats.packets;
 373                         bytes   = tx_ring->stats.bytes;
 374                 } while (u64_stats_fetch_retry_bh(&tx_ring->syncp, start));
 375
 376                 stats->tx_packets += packets;
 377                 stats->tx_bytes   += bytes;
 378                 rx_ring = &tx_ring[1];
 379
 380                 do {
 381                         start = u64_stats_fetch_begin_bh(&rx_ring->syncp);
 382                         packets = rx_ring->stats.packets;
 383                         bytes   = rx_ring->stats.bytes;
 384                 } while (u64_stats_fetch_retry_bh(&rx_ring->syncp, start));
 385
 386                 stats->rx_packets += packets;
 387                 stats->rx_bytes   += bytes;
 388         }
 389         rcu_read_unlock();
 390
 391         /* following stats updated by ixgbe_watchdog_task() */
 392         stats->multicast        = vsi_stats->multicast;
 393         stats->tx_errors        = vsi_stats->tx_errors;
 394         stats->tx_dropped       = vsi_stats->tx_dropped;
 395         stats->rx_errors        = vsi_stats->rx_errors;
 396         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 397         stats->rx_length_errors = vsi_stats->rx_length_errors;
 398
 399         return stats;
 400 }
 401
 402 /**
 403  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 404  * @vsi: the VSI to have its stats reset
 405  **/
 406 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 407 {
 408         struct rtnl_link_stats64 *ns;
 409         int i;
 410
 411         if (!vsi)
 412                 return;
 413
 414         ns = i40e_get_vsi_stats_struct(vsi);
 415         memset(ns, 0, sizeof(*ns));
 416         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 417         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 418         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 419         if (vsi->rx_rings)
 420                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 421                         memset(&vsi->rx_rings[i]->stats, 0 ,
 422                                sizeof(vsi->rx_rings[i]->stats));
 423                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 424                                sizeof(vsi->rx_rings[i]->rx_stats));
 425                         memset(&vsi->tx_rings[i]->stats, 0 ,
 426                                sizeof(vsi->tx_rings[i]->stats));
 427                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 428                                sizeof(vsi->tx_rings[i]->tx_stats));
 429                 }
 430         vsi->stat_offsets_loaded = false;
 431 }
 432
 433 /**
 434  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 435  * @pf: the PF to be reset
 436  **/
 437 void i40e_pf_reset_stats(struct i40e_pf *pf)
 438 {
 439         memset(&pf->stats, 0, sizeof(pf->stats));
 440         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 441         pf->stat_offsets_loaded = false;
 442 }
 443
 444 /**
 445  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 446  * @hw: ptr to the hardware info
 447  * @hireg: the high 32 bit reg to read
 448  * @loreg: the low 32 bit reg to read
 449  * @offset_loaded: has the initial offset been loaded yet
 450  * @offset: ptr to current offset value
 451  * @stat: ptr to the stat
 452  *
 453  * Since the device stats are not reset at PFReset, they likely will not
 454  * be zeroed when the driver starts.  We'll save the first values read
 455  * and use them as offsets to be subtracted from the raw values in order
 456  * to report stats that count from zero.  In the process, we also manage
 457  * the potential roll-over.
 458  **/
 459 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 460                                bool offset_loaded, u64 *offset, u64 *stat)
 461 {
 462         u64 new_data;
 463
 464         if (hw->device_id == I40E_QEMU_DEVICE_ID) {
 465                 new_data = rd32(hw, loreg);
 466                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 467         } else {
 468                 new_data = rd64(hw, loreg);
 469         }
 470         if (!offset_loaded)
 471                 *offset = new_data;
 472         if (likely(new_data >= *offset))
 473                 *stat = new_data - *offset;
 474         else
 475                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 476         *stat &= 0xFFFFFFFFFFFFULL;
 477 }
 478
 479 /**
 480  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 481  * @hw: ptr to the hardware info
 482  * @reg: the hw reg to read
 483  * @offset_loaded: has the initial offset been loaded yet
 484  * @offset: ptr to current offset value
 485  * @stat: ptr to the stat
 486  **/
 487 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 488                                bool offset_loaded, u64 *offset, u64 *stat)
 489 {
 490         u32 new_data;
 491
 492         new_data = rd32(hw, reg);
 493         if (!offset_loaded)
 494                 *offset = new_data;
 495         if (likely(new_data >= *offset))
 496                 *stat = (u32)(new_data - *offset);
 497         else
 498                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 499 }
 500
 501 /**
 502  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 503  * @vsi: the VSI to be updated
 504  **/
 505 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 506 {
 507         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 508         struct i40e_pf *pf = vsi->back;
 509         struct i40e_hw *hw = &pf->hw;
 510         struct i40e_eth_stats *oes;
 511         struct i40e_eth_stats *es;     /* device's eth stats */
 512
 513         es = &vsi->eth_stats;
 514         oes = &vsi->eth_stats_offsets;
 515
 516         /* Gather up the stats that the hw collects */
 517         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 518                            vsi->stat_offsets_loaded,
 519                            &oes->tx_errors, &es->tx_errors);
 520         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 521                            vsi->stat_offsets_loaded,
 522                            &oes->rx_discards, &es->rx_discards);
 523
 524         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 525                            I40E_GLV_GORCL(stat_idx),
 526                            vsi->stat_offsets_loaded,
 527                            &oes->rx_bytes, &es->rx_bytes);
 528         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 529                            I40E_GLV_UPRCL(stat_idx),
 530                            vsi->stat_offsets_loaded,
 531                            &oes->rx_unicast, &es->rx_unicast);
 532         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 533                            I40E_GLV_MPRCL(stat_idx),
 534                            vsi->stat_offsets_loaded,
 535                            &oes->rx_multicast, &es->rx_multicast);
 536         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 537                            I40E_GLV_BPRCL(stat_idx),
 538                            vsi->stat_offsets_loaded,
 539                            &oes->rx_broadcast, &es->rx_broadcast);
 540
 541         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 542                            I40E_GLV_GOTCL(stat_idx),
 543                            vsi->stat_offsets_loaded,
 544                            &oes->tx_bytes, &es->tx_bytes);
 545         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 546                            I40E_GLV_UPTCL(stat_idx),
 547                            vsi->stat_offsets_loaded,
 548                            &oes->tx_unicast, &es->tx_unicast);
 549         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 550                            I40E_GLV_MPTCL(stat_idx),
 551                            vsi->stat_offsets_loaded,
 552                            &oes->tx_multicast, &es->tx_multicast);
 553         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 554                            I40E_GLV_BPTCL(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->tx_broadcast, &es->tx_broadcast);
 557         vsi->stat_offsets_loaded = true;
 558 }
 559
 560 /**
 561  * i40e_update_veb_stats - Update Switch component statistics
 562  * @veb: the VEB being updated
 563  **/
 564 static void i40e_update_veb_stats(struct i40e_veb *veb)
 565 {
 566         struct i40e_pf *pf = veb->pf;
 567         struct i40e_hw *hw = &pf->hw;
 568         struct i40e_eth_stats *oes;
 569         struct i40e_eth_stats *es;     /* device's eth stats */
 570         int idx = 0;
 571
 572         idx = veb->stats_idx;
 573         es = &veb->stats;
 574         oes = &veb->stats_offsets;
 575
 576         /* Gather up the stats that the hw collects */
 577         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 578                            veb->stat_offsets_loaded,
 579                            &oes->tx_discards, &es->tx_discards);
 580         i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 581                            veb->stat_offsets_loaded,
 582                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 583
 584         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 585                            veb->stat_offsets_loaded,
 586                            &oes->rx_bytes, &es->rx_bytes);
 587         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 588                            veb->stat_offsets_loaded,
 589                            &oes->rx_unicast, &es->rx_unicast);
 590         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 591                            veb->stat_offsets_loaded,
 592                            &oes->rx_multicast, &es->rx_multicast);
 593         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 594                            veb->stat_offsets_loaded,
 595                            &oes->rx_broadcast, &es->rx_broadcast);
 596
 597         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 598                            veb->stat_offsets_loaded,
 599                            &oes->tx_bytes, &es->tx_bytes);
 600         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 601                            veb->stat_offsets_loaded,
 602                            &oes->tx_unicast, &es->tx_unicast);
 603         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 604                            veb->stat_offsets_loaded,
 605                            &oes->tx_multicast, &es->tx_multicast);
 606         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 607                            veb->stat_offsets_loaded,
 608                            &oes->tx_broadcast, &es->tx_broadcast);
 609         veb->stat_offsets_loaded = true;
 610 }
 611
 612 /**
 613  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 614  * @pf: the corresponding PF
 615  *
 616  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 617  **/
 618 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 619 {
 620         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 621         struct i40e_hw_port_stats *nsd = &pf->stats;
 622         struct i40e_hw *hw = &pf->hw;
 623         u64 xoff = 0;
 624         u16 i, v;
 625
 626         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 627             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 628                 return;
 629
 630         xoff = nsd->link_xoff_rx;
 631         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 632                            pf->stat_offsets_loaded,
 633                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 634
 635         /* No new LFC xoff rx */
 636         if (!(nsd->link_xoff_rx - xoff))
 637                 return;
 638
 639         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 640         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 641                 struct i40e_vsi *vsi = pf->vsi[v];
 642
 643                 if (!vsi)
 644                         continue;
 645
 646                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 647                         struct i40e_ring *ring = vsi->tx_rings[i];
 648                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 649                 }
 650         }
 651 }
 652
 653 /**
 654  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 655  * @pf: the corresponding PF
 656  *
 657  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 658  **/
 659 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 660 {
 661         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 662         struct i40e_hw_port_stats *nsd = &pf->stats;
 663         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 664         struct i40e_dcbx_config *dcb_cfg;
 665         struct i40e_hw *hw = &pf->hw;
 666         u16 i, v;
 667         u8 tc;
 668
 669         dcb_cfg = &hw->local_dcbx_config;
 670
 671         /* See if DCB enabled with PFC TC */
 672         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 673             !(dcb_cfg->pfc.pfcenable)) {
 674                 i40e_update_link_xoff_rx(pf);
 675                 return;
 676         }
 677
 678         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 679                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 680                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 681                                    pf->stat_offsets_loaded,
 682                                    &osd->priority_xoff_rx[i],
 683                                    &nsd->priority_xoff_rx[i]);
 684
 685                 /* No new PFC xoff rx */
 686                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 687                         continue;
 688                 /* Get the TC for given priority */
 689                 tc = dcb_cfg->etscfg.prioritytable[i];
 690                 xoff[tc] = true;
 691         }
 692
 693         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 694         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 695                 struct i40e_vsi *vsi = pf->vsi[v];
 696
 697                 if (!vsi)
 698                         continue;
 699
 700                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 701                         struct i40e_ring *ring = vsi->tx_rings[i];
 702
 703                         tc = ring->dcb_tc;
 704                         if (xoff[tc])
 705                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 706                                           &ring->state);
 707                 }
 708         }
 709 }
 710
 711 /**
 712  * i40e_update_stats - Update the board statistics counters.
 713  * @vsi: the VSI to be updated
 714  *
 715  * There are a few instances where we store the same stat in a
 716  * couple of different structs.  This is partly because we have
 717  * the netdev stats that need to be filled out, which is slightly
 718  * different from the "eth_stats" defined by the chip and used in
 719  * VF communications.  We sort it all out here in a central place.
 720  **/
 721 void i40e_update_stats(struct i40e_vsi *vsi)
 722 {
 723         struct i40e_pf *pf = vsi->back;
 724         struct i40e_hw *hw = &pf->hw;
 725         struct rtnl_link_stats64 *ons;
 726         struct rtnl_link_stats64 *ns;   /* netdev stats */
 727         struct i40e_eth_stats *oes;
 728         struct i40e_eth_stats *es;     /* device's eth stats */
 729         u32 tx_restart, tx_busy;
 730         u32 rx_page, rx_buf;
 731         u64 rx_p, rx_b;
 732         u64 tx_p, tx_b;
 733         int i;
 734         u16 q;
 735
 736         if (test_bit(__I40E_DOWN, &vsi->state) ||
 737             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 738                 return;
 739
 740         ns = i40e_get_vsi_stats_struct(vsi);
 741         ons = &vsi->net_stats_offsets;
 742         es = &vsi->eth_stats;
 743         oes = &vsi->eth_stats_offsets;
 744
 745         /* Gather up the netdev and vsi stats that the driver collects
 746          * on the fly during packet processing
 747          */
 748         rx_b = rx_p = 0;
 749         tx_b = tx_p = 0;
 750         tx_restart = tx_busy = 0;
 751         rx_page = 0;
 752         rx_buf = 0;
 753         rcu_read_lock();
 754         for (q = 0; q < vsi->num_queue_pairs; q++) {
 755                 struct i40e_ring *p;
 756                 u64 bytes, packets;
 757                 unsigned int start;
 758
 759                 /* locate Tx ring */
 760                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 761
 762                 do {
 763                         start = u64_stats_fetch_begin_bh(&p->syncp);
 764                         packets = p->stats.packets;
 765                         bytes = p->stats.bytes;
 766                 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
 767                 tx_b += bytes;
 768                 tx_p += packets;
 769                 tx_restart += p->tx_stats.restart_queue;
 770                 tx_busy += p->tx_stats.tx_busy;
 771
 772                 /* Rx queue is part of the same block as Tx queue */
 773                 p = &p[1];
 774                 do {
 775                         start = u64_stats_fetch_begin_bh(&p->syncp);
 776                         packets = p->stats.packets;
 777                         bytes = p->stats.bytes;
 778                 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
 779                 rx_b += bytes;
 780                 rx_p += packets;
 781                 rx_buf += p->rx_stats.alloc_rx_buff_failed;
 782                 rx_page += p->rx_stats.alloc_rx_page_failed;
 783         }
 784         rcu_read_unlock();
 785         vsi->tx_restart = tx_restart;
 786         vsi->tx_busy = tx_busy;
 787         vsi->rx_page_failed = rx_page;
 788         vsi->rx_buf_failed = rx_buf;
 789
 790         ns->rx_packets = rx_p;
 791         ns->rx_bytes = rx_b;
 792         ns->tx_packets = tx_p;
 793         ns->tx_bytes = tx_b;
 794
 795         i40e_update_eth_stats(vsi);
 796         /* update netdev stats from eth stats */
 797         ons->rx_errors = oes->rx_errors;
 798         ns->rx_errors = es->rx_errors;
 799         ons->tx_errors = oes->tx_errors;
 800         ns->tx_errors = es->tx_errors;
 801         ons->multicast = oes->rx_multicast;
 802         ns->multicast = es->rx_multicast;
 803         ons->tx_dropped = oes->tx_discards;
 804         ns->tx_dropped = es->tx_discards;
 805
 806         /* Get the port data only if this is the main PF VSI */
 807         if (vsi == pf->vsi[pf->lan_vsi]) {
 808                 struct i40e_hw_port_stats *nsd = &pf->stats;
 809                 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 810
 811                 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 812                                    I40E_GLPRT_GORCL(hw->port),
 813                                    pf->stat_offsets_loaded,
 814                                    &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 815                 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 816                                    I40E_GLPRT_GOTCL(hw->port),
 817                                    pf->stat_offsets_loaded,
 818                                    &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 819                 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 820                                    pf->stat_offsets_loaded,
 821                                    &osd->eth.rx_discards,
 822                                    &nsd->eth.rx_discards);
 823                 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 824                                    pf->stat_offsets_loaded,
 825                                    &osd->eth.tx_discards,
 826                                    &nsd->eth.tx_discards);
 827                 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 828                                    I40E_GLPRT_MPRCL(hw->port),
 829                                    pf->stat_offsets_loaded,
 830                                    &osd->eth.rx_multicast,
 831                                    &nsd->eth.rx_multicast);
 832
 833                 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 834                                    pf->stat_offsets_loaded,
 835                                    &osd->tx_dropped_link_down,
 836                                    &nsd->tx_dropped_link_down);
 837
 838                 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 839                                    pf->stat_offsets_loaded,
 840                                    &osd->crc_errors, &nsd->crc_errors);
 841                 ns->rx_crc_errors = nsd->crc_errors;
 842
 843                 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 844                                    pf->stat_offsets_loaded,
 845                                    &osd->illegal_bytes, &nsd->illegal_bytes);
 846                 ns->rx_errors = nsd->crc_errors
 847                                 + nsd->illegal_bytes;
 848
 849                 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 850                                    pf->stat_offsets_loaded,
 851                                    &osd->mac_local_faults,
 852                                    &nsd->mac_local_faults);
 853                 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 854                                    pf->stat_offsets_loaded,
 855                                    &osd->mac_remote_faults,
 856                                    &nsd->mac_remote_faults);
 857
 858                 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 859                                    pf->stat_offsets_loaded,
 860                                    &osd->rx_length_errors,
 861                                    &nsd->rx_length_errors);
 862                 ns->rx_length_errors = nsd->rx_length_errors;
 863
 864                 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 865                                    pf->stat_offsets_loaded,
 866                                    &osd->link_xon_rx, &nsd->link_xon_rx);
 867                 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 868                                    pf->stat_offsets_loaded,
 869                                    &osd->link_xon_tx, &nsd->link_xon_tx);
 870                 i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 871                 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 872                                    pf->stat_offsets_loaded,
 873                                    &osd->link_xoff_tx, &nsd->link_xoff_tx);
 874
 875                 for (i = 0; i < 8; i++) {
 876                         i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 877                                            pf->stat_offsets_loaded,
 878                                            &osd->priority_xon_rx[i],
 879                                            &nsd->priority_xon_rx[i]);
 880                         i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 881                                            pf->stat_offsets_loaded,
 882                                            &osd->priority_xon_tx[i],
 883                                            &nsd->priority_xon_tx[i]);
 884                         i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 885                                            pf->stat_offsets_loaded,
 886                                            &osd->priority_xoff_tx[i],
 887                                            &nsd->priority_xoff_tx[i]);
 888                         i40e_stat_update32(hw,
 889                                            I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 890                                            pf->stat_offsets_loaded,
 891                                            &osd->priority_xon_2_xoff[i],
 892                                            &nsd->priority_xon_2_xoff[i]);
 893                 }
 894
 895                 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 896                                    I40E_GLPRT_PRC64L(hw->port),
 897                                    pf->stat_offsets_loaded,
 898                                    &osd->rx_size_64, &nsd->rx_size_64);
 899                 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 900                                    I40E_GLPRT_PRC127L(hw->port),
 901                                    pf->stat_offsets_loaded,
 902                                    &osd->rx_size_127, &nsd->rx_size_127);
 903                 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 904                                    I40E_GLPRT_PRC255L(hw->port),
 905                                    pf->stat_offsets_loaded,
 906                                    &osd->rx_size_255, &nsd->rx_size_255);
 907                 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 908                                    I40E_GLPRT_PRC511L(hw->port),
 909                                    pf->stat_offsets_loaded,
 910                                    &osd->rx_size_511, &nsd->rx_size_511);
 911                 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 912                                    I40E_GLPRT_PRC1023L(hw->port),
 913                                    pf->stat_offsets_loaded,
 914                                    &osd->rx_size_1023, &nsd->rx_size_1023);
 915                 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 916                                    I40E_GLPRT_PRC1522L(hw->port),
 917                                    pf->stat_offsets_loaded,
 918                                    &osd->rx_size_1522, &nsd->rx_size_1522);
 919                 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 920                                    I40E_GLPRT_PRC9522L(hw->port),
 921                                    pf->stat_offsets_loaded,
 922                                    &osd->rx_size_big, &nsd->rx_size_big);
 923
 924                 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 925                                    I40E_GLPRT_PTC64L(hw->port),
 926                                    pf->stat_offsets_loaded,
 927                                    &osd->tx_size_64, &nsd->tx_size_64);
 928                 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 929                                    I40E_GLPRT_PTC127L(hw->port),
 930                                    pf->stat_offsets_loaded,
 931                                    &osd->tx_size_127, &nsd->tx_size_127);
 932                 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 933                                    I40E_GLPRT_PTC255L(hw->port),
 934                                    pf->stat_offsets_loaded,
 935                                    &osd->tx_size_255, &nsd->tx_size_255);
 936                 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 937                                    I40E_GLPRT_PTC511L(hw->port),
 938                                    pf->stat_offsets_loaded,
 939                                    &osd->tx_size_511, &nsd->tx_size_511);
 940                 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 941                                    I40E_GLPRT_PTC1023L(hw->port),
 942                                    pf->stat_offsets_loaded,
 943                                    &osd->tx_size_1023, &nsd->tx_size_1023);
 944                 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 945                                    I40E_GLPRT_PTC1522L(hw->port),
 946                                    pf->stat_offsets_loaded,
 947                                    &osd->tx_size_1522, &nsd->tx_size_1522);
 948                 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
 949                                    I40E_GLPRT_PTC9522L(hw->port),
 950                                    pf->stat_offsets_loaded,
 951                                    &osd->tx_size_big, &nsd->tx_size_big);
 952
 953                 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
 954                                    pf->stat_offsets_loaded,
 955                                    &osd->rx_undersize, &nsd->rx_undersize);
 956                 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
 957                                    pf->stat_offsets_loaded,
 958                                    &osd->rx_fragments, &nsd->rx_fragments);
 959                 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
 960                                    pf->stat_offsets_loaded,
 961                                    &osd->rx_oversize, &nsd->rx_oversize);
 962                 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
 963                                    pf->stat_offsets_loaded,
 964                                    &osd->rx_jabber, &nsd->rx_jabber);
 965         }
 966
 967         pf->stat_offsets_loaded = true;
 968 }
 969
 970 /**
 971  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 972  * @vsi: the VSI to be searched
 973  * @macaddr: the MAC address
 974  * @vlan: the vlan
 975  * @is_vf: make sure its a vf filter, else doesn't matter
 976  * @is_netdev: make sure its a netdev filter, else doesn't matter
 977  *
 978  * Returns ptr to the filter object or NULL
 979  **/
 980 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
 981                                                 u8 *macaddr, s16 vlan,
 982                                                 bool is_vf, bool is_netdev)
 983 {
 984         struct i40e_mac_filter *f;
 985
 986         if (!vsi || !macaddr)
 987                 return NULL;
 988
 989         list_for_each_entry(f, &vsi->mac_filter_list, list) {
 990                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
 991                     (vlan == f->vlan)    &&
 992                     (!is_vf || f->is_vf) &&
 993                     (!is_netdev || f->is_netdev))
 994                         return f;
 995         }
 996         return NULL;
 997 }
 998
 999 /**
1000  * i40e_find_mac - Find a mac addr in the macvlan filters list
1001  * @vsi: the VSI to be searched
1002  * @macaddr: the MAC address we are searching for
1003  * @is_vf: make sure its a vf filter, else doesn't matter
1004  * @is_netdev: make sure its a netdev filter, else doesn't matter
1005  *
1006  * Returns the first filter with the provided MAC address or NULL if
1007  * MAC address was not found
1008  **/
1009 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1010                                       bool is_vf, bool is_netdev)
1011 {
1012         struct i40e_mac_filter *f;
1013
1014         if (!vsi || !macaddr)
1015                 return NULL;
1016
1017         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1018                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1019                     (!is_vf || f->is_vf) &&
1020                     (!is_netdev || f->is_netdev))
1021                         return f;
1022         }
1023         return NULL;
1024 }
1025
1026 /**
1027  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1028  * @vsi: the VSI to be searched
1029  *
1030  * Returns true if VSI is in vlan mode or false otherwise
1031  **/
1032 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1033 {
1034         struct i40e_mac_filter *f;
1035
1036         /* Only -1 for all the filters denotes not in vlan mode
1037          * so we have to go through all the list in order to make sure
1038          */
1039         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1040                 if (f->vlan >= 0)
1041                         return true;
1042         }
1043
1044         return false;
1045 }
1046
1047 /**
1048  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1049  * @vsi: the VSI to be searched
1050  * @macaddr: the mac address to be filtered
1051  * @is_vf: true if it is a vf
1052  * @is_netdev: true if it is a netdev
1053  *
1054  * Goes through all the macvlan filters and adds a
1055  * macvlan filter for each unique vlan that already exists
1056  *
1057  * Returns first filter found on success, else NULL
1058  **/
1059 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1060                                              bool is_vf, bool is_netdev)
1061 {
1062         struct i40e_mac_filter *f;
1063
1064         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1065                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1066                                       is_vf, is_netdev)) {
1067                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1068                                                 is_vf, is_netdev))
1069                                 return NULL;
1070                 }
1071         }
1072
1073         return list_first_entry_or_null(&vsi->mac_filter_list,
1074                                         struct i40e_mac_filter, list);
1075 }
1076
1077 /**
1078  * i40e_add_filter - Add a mac/vlan filter to the VSI
1079  * @vsi: the VSI to be searched
1080  * @macaddr: the MAC address
1081  * @vlan: the vlan
1082  * @is_vf: make sure its a vf filter, else doesn't matter
1083  * @is_netdev: make sure its a netdev filter, else doesn't matter
1084  *
1085  * Returns ptr to the filter object or NULL when no memory available.
1086  **/
1087 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1088                                         u8 *macaddr, s16 vlan,
1089                                         bool is_vf, bool is_netdev)
1090 {
1091         struct i40e_mac_filter *f;
1092
1093         if (!vsi || !macaddr)
1094                 return NULL;
1095
1096         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1097         if (!f) {
1098                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1099                 if (!f)
1100                         goto add_filter_out;
1101
1102                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1103                 f->vlan = vlan;
1104                 f->changed = true;
1105
1106                 INIT_LIST_HEAD(&f->list);
1107                 list_add(&f->list, &vsi->mac_filter_list);
1108         }
1109
1110         /* increment counter and add a new flag if needed */
1111         if (is_vf) {
1112                 if (!f->is_vf) {
1113                         f->is_vf = true;
1114                         f->counter++;
1115                 }
1116         } else if (is_netdev) {
1117                 if (!f->is_netdev) {
1118                         f->is_netdev = true;
1119                         f->counter++;
1120                 }
1121         } else {
1122                 f->counter++;
1123         }
1124
1125         /* changed tells sync_filters_subtask to
1126          * push the filter down to the firmware
1127          */
1128         if (f->changed) {
1129                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1130                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1131         }
1132
1133 add_filter_out:
1134         return f;
1135 }
1136
1137 /**
1138  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1139  * @vsi: the VSI to be searched
1140  * @macaddr: the MAC address
1141  * @vlan: the vlan
1142  * @is_vf: make sure it's a vf filter, else doesn't matter
1143  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1144  **/
1145 void i40e_del_filter(struct i40e_vsi *vsi,
1146                      u8 *macaddr, s16 vlan,
1147                      bool is_vf, bool is_netdev)
1148 {
1149         struct i40e_mac_filter *f;
1150
1151         if (!vsi || !macaddr)
1152                 return;
1153
1154         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1155         if (!f || f->counter == 0)
1156                 return;
1157
1158         if (is_vf) {
1159                 if (f->is_vf) {
1160                         f->is_vf = false;
1161                         f->counter--;
1162                 }
1163         } else if (is_netdev) {
1164                 if (f->is_netdev) {
1165                         f->is_netdev = false;
1166                         f->counter--;
1167                 }
1168         } else {
1169                 /* make sure we don't remove a filter in use by vf or netdev */
1170                 int min_f = 0;
1171                 min_f += (f->is_vf ? 1 : 0);
1172                 min_f += (f->is_netdev ? 1 : 0);
1173
1174                 if (f->counter > min_f)
1175                         f->counter--;
1176         }
1177
1178         /* counter == 0 tells sync_filters_subtask to
1179          * remove the filter from the firmware's list
1180          */
1181         if (f->counter == 0) {
1182                 f->changed = true;
1183                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1184                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1185         }
1186 }
1187
1188 /**
1189  * i40e_set_mac - NDO callback to set mac address
1190  * @netdev: network interface device structure
1191  * @p: pointer to an address structure
1192  *
1193  * Returns 0 on success, negative on failure
1194  **/
1195 static int i40e_set_mac(struct net_device *netdev, void *p)
1196 {
1197         struct i40e_netdev_priv *np = netdev_priv(netdev);
1198         struct i40e_vsi *vsi = np->vsi;
1199         struct sockaddr *addr = p;
1200         struct i40e_mac_filter *f;
1201
1202         if (!is_valid_ether_addr(addr->sa_data))
1203                 return -EADDRNOTAVAIL;
1204
1205         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1206
1207         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1208                 return 0;
1209
1210         if (vsi->type == I40E_VSI_MAIN) {
1211                 i40e_status ret;
1212                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1213                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1214                                                 addr->sa_data, NULL);
1215                 if (ret) {
1216                         netdev_info(netdev,
1217                                     "Addr change for Main VSI failed: %d\n",
1218                                     ret);
1219                         return -EADDRNOTAVAIL;
1220                 }
1221
1222                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1223         }
1224
1225         /* In order to be sure to not drop any packets, add the new address
1226          * then delete the old one.
1227          */
1228         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1229         if (!f)
1230                 return -ENOMEM;
1231
1232         i40e_sync_vsi_filters(vsi);
1233         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1234         i40e_sync_vsi_filters(vsi);
1235
1236         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1237
1238         return 0;
1239 }
1240
1241 /**
1242  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1243  * @vsi: the VSI being setup
1244  * @ctxt: VSI context structure
1245  * @enabled_tc: Enabled TCs bitmap
1246  * @is_add: True if called before Add VSI
1247  *
1248  * Setup VSI queue mapping for enabled traffic classes.
1249  **/
1250 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1251                                      struct i40e_vsi_context *ctxt,
1252                                      u8 enabled_tc,
1253                                      bool is_add)
1254 {
1255         struct i40e_pf *pf = vsi->back;
1256         u16 sections = 0;
1257         u8 netdev_tc = 0;
1258         u16 numtc = 0;
1259         u16 qcount;
1260         u8 offset;
1261         u16 qmap;
1262         int i;
1263
1264         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1265         offset = 0;
1266
1267         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1268                 /* Find numtc from enabled TC bitmap */
1269                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1270                         if (enabled_tc & (1 << i)) /* TC is enabled */
1271                                 numtc++;
1272                 }
1273                 if (!numtc) {
1274                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1275                         numtc = 1;
1276                 }
1277         } else {
1278                 /* At least TC0 is enabled in case of non-DCB case */
1279                 numtc = 1;
1280         }
1281
1282         vsi->tc_config.numtc = numtc;
1283         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1284
1285         /* Setup queue offset/count for all TCs for given VSI */
1286         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1287                 /* See if the given TC is enabled for the given VSI */
1288                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1289                         int pow, num_qps;
1290
1291                         vsi->tc_config.tc_info[i].qoffset = offset;
1292                         switch (vsi->type) {
1293                         case I40E_VSI_MAIN:
1294                                 if (i == 0)
1295                                         qcount = pf->rss_size;
1296                                 else
1297                                         qcount = pf->num_tc_qps;
1298                                 vsi->tc_config.tc_info[i].qcount = qcount;
1299                                 break;
1300                         case I40E_VSI_FDIR:
1301                         case I40E_VSI_SRIOV:
1302                         case I40E_VSI_VMDQ2:
1303                         default:
1304                                 qcount = vsi->alloc_queue_pairs;
1305                                 vsi->tc_config.tc_info[i].qcount = qcount;
1306                                 WARN_ON(i != 0);
1307                                 break;
1308                         }
1309
1310                         /* find the power-of-2 of the number of queue pairs */
1311                         num_qps = vsi->tc_config.tc_info[i].qcount;
1312                         pow = 0;
1313                         while (num_qps &&
1314                               ((1 << pow) < vsi->tc_config.tc_info[i].qcount)) {
1315                                 pow++;
1316                                 num_qps >>= 1;
1317                         }
1318
1319                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1320                         qmap =
1321                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1322                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1323
1324                         offset += vsi->tc_config.tc_info[i].qcount;
1325                 } else {
1326                         /* TC is not enabled so set the offset to
1327                          * default queue and allocate one queue
1328                          * for the given TC.
1329                          */
1330                         vsi->tc_config.tc_info[i].qoffset = 0;
1331                         vsi->tc_config.tc_info[i].qcount = 1;
1332                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1333
1334                         qmap = 0;
1335                 }
1336                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1337         }
1338
1339         /* Set actual Tx/Rx queue pairs */
1340         vsi->num_queue_pairs = offset;
1341
1342         /* Scheduler section valid can only be set for ADD VSI */
1343         if (is_add) {
1344                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1345
1346                 ctxt->info.up_enable_bits = enabled_tc;
1347         }
1348         if (vsi->type == I40E_VSI_SRIOV) {
1349                 ctxt->info.mapping_flags |=
1350                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1351                 for (i = 0; i < vsi->num_queue_pairs; i++)
1352                         ctxt->info.queue_mapping[i] =
1353                                                cpu_to_le16(vsi->base_queue + i);
1354         } else {
1355                 ctxt->info.mapping_flags |=
1356                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1357                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1358         }
1359         ctxt->info.valid_sections |= cpu_to_le16(sections);
1360 }
1361
1362 /**
1363  * i40e_set_rx_mode - NDO callback to set the netdev filters
1364  * @netdev: network interface device structure
1365  **/
1366 static void i40e_set_rx_mode(struct net_device *netdev)
1367 {
1368         struct i40e_netdev_priv *np = netdev_priv(netdev);
1369         struct i40e_mac_filter *f, *ftmp;
1370         struct i40e_vsi *vsi = np->vsi;
1371         struct netdev_hw_addr *uca;
1372         struct netdev_hw_addr *mca;
1373         struct netdev_hw_addr *ha;
1374
1375         /* add addr if not already in the filter list */
1376         netdev_for_each_uc_addr(uca, netdev) {
1377                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1378                         if (i40e_is_vsi_in_vlan(vsi))
1379                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1380                                                      false, true);
1381                         else
1382                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1383                                                 false, true);
1384                 }
1385         }
1386
1387         netdev_for_each_mc_addr(mca, netdev) {
1388                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1389                         if (i40e_is_vsi_in_vlan(vsi))
1390                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1391                                                      false, true);
1392                         else
1393                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1394                                                 false, true);
1395                 }
1396         }
1397
1398         /* remove filter if not in netdev list */
1399         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1400                 bool found = false;
1401
1402                 if (!f->is_netdev)
1403                         continue;
1404
1405                 if (is_multicast_ether_addr(f->macaddr)) {
1406                         netdev_for_each_mc_addr(mca, netdev) {
1407                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1408                                         found = true;
1409                                         break;
1410                                 }
1411                         }
1412                 } else {
1413                         netdev_for_each_uc_addr(uca, netdev) {
1414                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1415                                         found = true;
1416                                         break;
1417                                 }
1418                         }
1419
1420                         for_each_dev_addr(netdev, ha) {
1421                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1422                                         found = true;
1423                                         break;
1424                                 }
1425                         }
1426                 }
1427                 if (!found)
1428                         i40e_del_filter(
1429                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1430         }
1431
1432         /* check for other flag changes */
1433         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1434                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1435                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1436         }
1437 }
1438
1439 /**
1440  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1441  * @vsi: ptr to the VSI
1442  *
1443  * Push any outstanding VSI filter changes through the AdminQ.
1444  *
1445  * Returns 0 or error value
1446  **/
1447 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1448 {
1449         struct i40e_mac_filter *f, *ftmp;
1450         bool promisc_forced_on = false;
1451         bool add_happened = false;
1452         int filter_list_len = 0;
1453         u32 changed_flags = 0;
1454         i40e_status aq_ret = 0;
1455         struct i40e_pf *pf;
1456         int num_add = 0;
1457         int num_del = 0;
1458         u16 cmd_flags;
1459
1460         /* empty array typed pointers, kcalloc later */
1461         struct i40e_aqc_add_macvlan_element_data *add_list;
1462         struct i40e_aqc_remove_macvlan_element_data *del_list;
1463
1464         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1465                 usleep_range(1000, 2000);
1466         pf = vsi->back;
1467
1468         if (vsi->netdev) {
1469                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1470                 vsi->current_netdev_flags = vsi->netdev->flags;
1471         }
1472
1473         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1474                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1475
1476                 filter_list_len = pf->hw.aq.asq_buf_size /
1477                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1478                 del_list = kcalloc(filter_list_len,
1479                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1480                             GFP_KERNEL);
1481                 if (!del_list)
1482                         return -ENOMEM;
1483
1484                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1485                         if (!f->changed)
1486                                 continue;
1487
1488                         if (f->counter != 0)
1489                                 continue;
1490                         f->changed = false;
1491                         cmd_flags = 0;
1492
1493                         /* add to delete list */
1494                         memcpy(del_list[num_del].mac_addr,
1495                                f->macaddr, ETH_ALEN);
1496                         del_list[num_del].vlan_tag =
1497                                 cpu_to_le16((u16)(f->vlan ==
1498                                             I40E_VLAN_ANY ? 0 : f->vlan));
1499
1500                         /* vlan0 as wild card to allow packets from all vlans */
1501                         if (f->vlan == I40E_VLAN_ANY ||
1502                             (vsi->netdev && !(vsi->netdev->features &
1503                                               NETIF_F_HW_VLAN_CTAG_FILTER)))
1504                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1505                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1506                         del_list[num_del].flags = cmd_flags;
1507                         num_del++;
1508
1509                         /* unlink from filter list */
1510                         list_del(&f->list);
1511                         kfree(f);
1512
1513                         /* flush a full buffer */
1514                         if (num_del == filter_list_len) {
1515                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1516                                             vsi->seid, del_list, num_del,
1517                                             NULL);
1518                                 num_del = 0;
1519                                 memset(del_list, 0, sizeof(*del_list));
1520
1521                                 if (aq_ret)
1522                                         dev_info(&pf->pdev->dev,
1523                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1524                                                  aq_ret,
1525                                                  pf->hw.aq.asq_last_status);
1526                         }
1527                 }
1528                 if (num_del) {
1529                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1530                                                      del_list, num_del, NULL);
1531                         num_del = 0;
1532
1533                         if (aq_ret)
1534                                 dev_info(&pf->pdev->dev,
1535                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1536                                          aq_ret, pf->hw.aq.asq_last_status);
1537                 }
1538
1539                 kfree(del_list);
1540                 del_list = NULL;
1541
1542                 /* do all the adds now */
1543                 filter_list_len = pf->hw.aq.asq_buf_size /
1544                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1545                 add_list = kcalloc(filter_list_len,
1546                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1547                                GFP_KERNEL);
1548                 if (!add_list)
1549                         return -ENOMEM;
1550
1551                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1552                         if (!f->changed)
1553                                 continue;
1554
1555                         if (f->counter == 0)
1556                                 continue;
1557                         f->changed = false;
1558                         add_happened = true;
1559                         cmd_flags = 0;
1560
1561                         /* add to add array */
1562                         memcpy(add_list[num_add].mac_addr,
1563                                f->macaddr, ETH_ALEN);
1564                         add_list[num_add].vlan_tag =
1565                                 cpu_to_le16(
1566                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1567                         add_list[num_add].queue_number = 0;
1568
1569                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1570
1571                         /* vlan0 as wild card to allow packets from all vlans */
1572                         if (f->vlan == I40E_VLAN_ANY || (vsi->netdev &&
1573                             !(vsi->netdev->features &
1574                                                  NETIF_F_HW_VLAN_CTAG_FILTER)))
1575                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1576                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1577                         num_add++;
1578
1579                         /* flush a full buffer */
1580                         if (num_add == filter_list_len) {
1581                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1582                                                              add_list, num_add,
1583                                                              NULL);
1584                                 num_add = 0;
1585
1586                                 if (aq_ret)
1587                                         break;
1588                                 memset(add_list, 0, sizeof(*add_list));
1589                         }
1590                 }
1591                 if (num_add) {
1592                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1593                                                      add_list, num_add, NULL);
1594                         num_add = 0;
1595                 }
1596                 kfree(add_list);
1597                 add_list = NULL;
1598
1599                 if (add_happened && (!aq_ret)) {
1600                         /* do nothing */;
1601                 } else if (add_happened && (aq_ret)) {
1602                         dev_info(&pf->pdev->dev,
1603                                  "add filter failed, err %d, aq_err %d\n",
1604                                  aq_ret, pf->hw.aq.asq_last_status);
1605                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1606                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1607                                       &vsi->state)) {
1608                                 promisc_forced_on = true;
1609                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1610                                         &vsi->state);
1611                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1612                         }
1613                 }
1614         }
1615
1616         /* check for changes in promiscuous modes */
1617         if (changed_flags & IFF_ALLMULTI) {
1618                 bool cur_multipromisc;
1619                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1620                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1621                                                                vsi->seid,
1622                                                                cur_multipromisc,
1623                                                                NULL);
1624                 if (aq_ret)
1625                         dev_info(&pf->pdev->dev,
1626                                  "set multi promisc failed, err %d, aq_err %d\n",
1627                                  aq_ret, pf->hw.aq.asq_last_status);
1628         }
1629         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1630                 bool cur_promisc;
1631                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1632                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1633                                         &vsi->state));
1634                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1635                                                              vsi->seid,
1636                                                              cur_promisc, NULL);
1637                 if (aq_ret)
1638                         dev_info(&pf->pdev->dev,
1639                                  "set uni promisc failed, err %d, aq_err %d\n",
1640                                  aq_ret, pf->hw.aq.asq_last_status);
1641         }
1642
1643         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1644         return 0;
1645 }
1646
1647 /**
1648  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1649  * @pf: board private structure
1650  **/
1651 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1652 {
1653         int v;
1654
1655         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1656                 return;
1657         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1658
1659         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1660                 if (pf->vsi[v] &&
1661                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1662                         i40e_sync_vsi_filters(pf->vsi[v]);
1663         }
1664 }
1665
1666 /**
1667  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1668  * @netdev: network interface device structure
1669  * @new_mtu: new value for maximum frame size
1670  *
1671  * Returns 0 on success, negative on failure
1672  **/
1673 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1674 {
1675         struct i40e_netdev_priv *np = netdev_priv(netdev);
1676         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1677         struct i40e_vsi *vsi = np->vsi;
1678
1679         /* MTU < 68 is an error and causes problems on some kernels */
1680         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1681                 return -EINVAL;
1682
1683         netdev_info(netdev, "changing MTU from %d to %d\n",
1684                     netdev->mtu, new_mtu);
1685         netdev->mtu = new_mtu;
1686         if (netif_running(netdev))
1687                 i40e_vsi_reinit_locked(vsi);
1688
1689         return 0;
1690 }
1691
1692 /**
1693  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1694  * @vsi: the vsi being adjusted
1695  **/
1696 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1697 {
1698         struct i40e_vsi_context ctxt;
1699         i40e_status ret;
1700
1701         if ((vsi->info.valid_sections &
1702              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1703             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1704                 return;  /* already enabled */
1705
1706         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1707         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1708                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1709
1710         ctxt.seid = vsi->seid;
1711         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1712         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1713         if (ret) {
1714                 dev_info(&vsi->back->pdev->dev,
1715                          "%s: update vsi failed, aq_err=%d\n",
1716                          __func__, vsi->back->hw.aq.asq_last_status);
1717         }
1718 }
1719
1720 /**
1721  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1722  * @vsi: the vsi being adjusted
1723  **/
1724 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1725 {
1726         struct i40e_vsi_context ctxt;
1727         i40e_status ret;
1728
1729         if ((vsi->info.valid_sections &
1730              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1731             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1732              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1733                 return;  /* already disabled */
1734
1735         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1736         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1737                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1738
1739         ctxt.seid = vsi->seid;
1740         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1741         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1742         if (ret) {
1743                 dev_info(&vsi->back->pdev->dev,
1744                          "%s: update vsi failed, aq_err=%d\n",
1745                          __func__, vsi->back->hw.aq.asq_last_status);
1746         }
1747 }
1748
1749 /**
1750  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1751  * @netdev: network interface to be adjusted
1752  * @features: netdev features to test if VLAN offload is enabled or not
1753  **/
1754 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1755 {
1756         struct i40e_netdev_priv *np = netdev_priv(netdev);
1757         struct i40e_vsi *vsi = np->vsi;
1758
1759         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1760                 i40e_vlan_stripping_enable(vsi);
1761         else
1762                 i40e_vlan_stripping_disable(vsi);
1763 }
1764
1765 /**
1766  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1767  * @vsi: the vsi being configured
1768  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1769  **/
1770 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1771 {
1772         struct i40e_mac_filter *f, *add_f;
1773         bool is_netdev, is_vf;
1774         int ret;
1775
1776         is_vf = (vsi->type == I40E_VSI_SRIOV);
1777         is_netdev = !!(vsi->netdev);
1778
1779         if (is_netdev) {
1780                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1781                                         is_vf, is_netdev);
1782                 if (!add_f) {
1783                         dev_info(&vsi->back->pdev->dev,
1784                                  "Could not add vlan filter %d for %pM\n",
1785                                  vid, vsi->netdev->dev_addr);
1786                         return -ENOMEM;
1787                 }
1788         }
1789
1790         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1791                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1792                 if (!add_f) {
1793                         dev_info(&vsi->back->pdev->dev,
1794                                  "Could not add vlan filter %d for %pM\n",
1795                                  vid, f->macaddr);
1796                         return -ENOMEM;
1797                 }
1798         }
1799
1800         ret = i40e_sync_vsi_filters(vsi);
1801         if (ret) {
1802                 dev_info(&vsi->back->pdev->dev,
1803                          "Could not sync filters for vid %d\n", vid);
1804                 return ret;
1805         }
1806
1807         /* Now if we add a vlan tag, make sure to check if it is the first
1808          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1809          * with 0, so we now accept untagged and specified tagged traffic
1810          * (and not any taged and untagged)
1811          */
1812         if (vid > 0) {
1813                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1814                                                   I40E_VLAN_ANY,
1815                                                   is_vf, is_netdev)) {
1816                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1817                                         I40E_VLAN_ANY, is_vf, is_netdev);
1818                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1819                                                 is_vf, is_netdev);
1820                         if (!add_f) {
1821                                 dev_info(&vsi->back->pdev->dev,
1822                                          "Could not add filter 0 for %pM\n",
1823                                          vsi->netdev->dev_addr);
1824                                 return -ENOMEM;
1825                         }
1826                 }
1827
1828                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1829                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1830                                              is_vf, is_netdev)) {
1831                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1832                                                 is_vf, is_netdev);
1833                                 add_f = i40e_add_filter(vsi, f->macaddr,
1834                                                         0, is_vf, is_netdev);
1835                                 if (!add_f) {
1836                                         dev_info(&vsi->back->pdev->dev,
1837                                                  "Could not add filter 0 for %pM\n",
1838                                                  f->macaddr);
1839                                         return -ENOMEM;
1840                                 }
1841                         }
1842                 }
1843                 ret = i40e_sync_vsi_filters(vsi);
1844         }
1845
1846         return ret;
1847 }
1848
1849 /**
1850  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1851  * @vsi: the vsi being configured
1852  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1853  *
1854  * Return: 0 on success or negative otherwise
1855  **/
1856 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1857 {
1858         struct net_device *netdev = vsi->netdev;
1859         struct i40e_mac_filter *f, *add_f;
1860         bool is_vf, is_netdev;
1861         int filter_count = 0;
1862         int ret;
1863
1864         is_vf = (vsi->type == I40E_VSI_SRIOV);
1865         is_netdev = !!(netdev);
1866
1867         if (is_netdev)
1868                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1869
1870         list_for_each_entry(f, &vsi->mac_filter_list, list)
1871                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1872
1873         ret = i40e_sync_vsi_filters(vsi);
1874         if (ret) {
1875                 dev_info(&vsi->back->pdev->dev, "Could not sync filters\n");
1876                 return ret;
1877         }
1878
1879         /* go through all the filters for this VSI and if there is only
1880          * vid == 0 it means there are no other filters, so vid 0 must
1881          * be replaced with -1. This signifies that we should from now
1882          * on accept any traffic (with any tag present, or untagged)
1883          */
1884         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1885                 if (is_netdev) {
1886                         if (f->vlan &&
1887                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1888                                 filter_count++;
1889                 }
1890
1891                 if (f->vlan)
1892                         filter_count++;
1893         }
1894
1895         if (!filter_count && is_netdev) {
1896                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1897                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1898                                     is_vf, is_netdev);
1899                 if (!f) {
1900                         dev_info(&vsi->back->pdev->dev,
1901                                  "Could not add filter %d for %pM\n",
1902                                  I40E_VLAN_ANY, netdev->dev_addr);
1903                         return -ENOMEM;
1904                 }
1905         }
1906
1907         if (!filter_count) {
1908                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1909                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1910                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1911                                             is_vf, is_netdev);
1912                         if (!add_f) {
1913                                 dev_info(&vsi->back->pdev->dev,
1914                                          "Could not add filter %d for %pM\n",
1915                                          I40E_VLAN_ANY, f->macaddr);
1916                                 return -ENOMEM;
1917                         }
1918                 }
1919         }
1920
1921         return i40e_sync_vsi_filters(vsi);
1922 }
1923
1924 /**
1925  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1926  * @netdev: network interface to be adjusted
1927  * @vid: vlan id to be added
1928  *
1929  * net_device_ops implementation for adding vlan ids
1930  **/
1931 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1932                                 __always_unused __be16 proto, u16 vid)
1933 {
1934         struct i40e_netdev_priv *np = netdev_priv(netdev);
1935         struct i40e_vsi *vsi = np->vsi;
1936         int ret = 0;
1937
1938         if (vid > 4095)
1939                 return -EINVAL;
1940
1941         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1942
1943         /* If the network stack called us with vid = 0, we should
1944          * indicate to i40e_vsi_add_vlan() that we want to receive
1945          * any traffic (i.e. with any vlan tag, or untagged)
1946          */
1947         ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY);
1948
1949         if (!ret && (vid < VLAN_N_VID))
1950                 set_bit(vid, vsi->active_vlans);
1951
1952         return ret;
1953 }
1954
1955 /**
1956  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
1957  * @netdev: network interface to be adjusted
1958  * @vid: vlan id to be removed
1959  *
1960  * net_device_ops implementation for adding vlan ids
1961  **/
1962 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
1963                                  __always_unused __be16 proto, u16 vid)
1964 {
1965         struct i40e_netdev_priv *np = netdev_priv(netdev);
1966         struct i40e_vsi *vsi = np->vsi;
1967
1968         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
1969
1970         /* return code is ignored as there is nothing a user
1971          * can do about failure to remove and a log message was
1972          * already printed from the other function
1973          */
1974         i40e_vsi_kill_vlan(vsi, vid);
1975
1976         clear_bit(vid, vsi->active_vlans);
1977
1978         return 0;
1979 }
1980
1981 /**
1982  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
1983  * @vsi: the vsi being brought back up
1984  **/
1985 static void i40e_restore_vlan(struct i40e_vsi *vsi)
1986 {
1987         u16 vid;
1988
1989         if (!vsi->netdev)
1990                 return;
1991
1992         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
1993
1994         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
1995                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
1996                                      vid);
1997 }
1998
1999 /**
2000  * i40e_vsi_add_pvid - Add pvid for the VSI
2001  * @vsi: the vsi being adjusted
2002  * @vid: the vlan id to set as a PVID
2003  **/
2004 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2005 {
2006         struct i40e_vsi_context ctxt;
2007         i40e_status aq_ret;
2008
2009         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2010         vsi->info.pvid = cpu_to_le16(vid);
2011         vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_INSERT_PVID;
2012         vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_UNTAGGED;
2013
2014         ctxt.seid = vsi->seid;
2015         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2016         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2017         if (aq_ret) {
2018                 dev_info(&vsi->back->pdev->dev,
2019                          "%s: update vsi failed, aq_err=%d\n",
2020                          __func__, vsi->back->hw.aq.asq_last_status);
2021                 return -ENOENT;
2022         }
2023
2024         return 0;
2025 }
2026
2027 /**
2028  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2029  * @vsi: the vsi being adjusted
2030  *
2031  * Just use the vlan_rx_register() service to put it back to normal
2032  **/
2033 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2034 {
2035         vsi->info.pvid = 0;
2036         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2037 }
2038
2039 /**
2040  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2041  * @vsi: ptr to the VSI
2042  *
2043  * If this function returns with an error, then it's possible one or
2044  * more of the rings is populated (while the rest are not).  It is the
2045  * callers duty to clean those orphaned rings.
2046  *
2047  * Return 0 on success, negative on failure
2048  **/
2049 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2050 {
2051         int i, err = 0;
2052
2053         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2054                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2055
2056         return err;
2057 }
2058
2059 /**
2060  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2061  * @vsi: ptr to the VSI
2062  *
2063  * Free VSI's transmit software resources
2064  **/
2065 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2066 {
2067         int i;
2068
2069         for (i = 0; i < vsi->num_queue_pairs; i++)
2070                 if (vsi->tx_rings[i]->desc)
2071                         i40e_free_tx_resources(vsi->tx_rings[i]);
2072 }
2073
2074 /**
2075  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2076  * @vsi: ptr to the VSI
2077  *
2078  * If this function returns with an error, then it's possible one or
2079  * more of the rings is populated (while the rest are not).  It is the
2080  * callers duty to clean those orphaned rings.
2081  *
2082  * Return 0 on success, negative on failure
2083  **/
2084 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2085 {
2086         int i, err = 0;
2087
2088         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2089                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2090         return err;
2091 }
2092
2093 /**
2094  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2095  * @vsi: ptr to the VSI
2096  *
2097  * Free all receive software resources
2098  **/
2099 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2100 {
2101         int i;
2102
2103         for (i = 0; i < vsi->num_queue_pairs; i++)
2104                 if (vsi->rx_rings[i]->desc)
2105                         i40e_free_rx_resources(vsi->rx_rings[i]);
2106 }
2107
2108 /**
2109  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2110  * @ring: The Tx ring to configure
2111  *
2112  * Configure the Tx descriptor ring in the HMC context.
2113  **/
2114 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2115 {
2116         struct i40e_vsi *vsi = ring->vsi;
2117         u16 pf_q = vsi->base_queue + ring->queue_index;
2118         struct i40e_hw *hw = &vsi->back->hw;
2119         struct i40e_hmc_obj_txq tx_ctx;
2120         i40e_status err = 0;
2121         u32 qtx_ctl = 0;
2122
2123         /* some ATR related tx ring init */
2124         if (vsi->back->flags & I40E_FLAG_FDIR_ATR_ENABLED) {
2125                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2126                 ring->atr_count = 0;
2127         } else {
2128                 ring->atr_sample_rate = 0;
2129         }
2130
2131         /* initialize XPS */
2132         if (ring->q_vector && ring->netdev &&
2133             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2134                 netif_set_xps_queue(ring->netdev,
2135                                     &ring->q_vector->affinity_mask,
2136                                     ring->queue_index);
2137
2138         /* clear the context structure first */
2139         memset(&tx_ctx, 0, sizeof(tx_ctx));
2140
2141         tx_ctx.new_context = 1;
2142         tx_ctx.base = (ring->dma / 128);
2143         tx_ctx.qlen = ring->count;
2144         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FDIR_ENABLED |
2145                         I40E_FLAG_FDIR_ATR_ENABLED));
2146
2147         /* As part of VSI creation/update, FW allocates certain
2148          * Tx arbitration queue sets for each TC enabled for
2149          * the VSI. The FW returns the handles to these queue
2150          * sets as part of the response buffer to Add VSI,
2151          * Update VSI, etc. AQ commands. It is expected that
2152          * these queue set handles be associated with the Tx
2153          * queues by the driver as part of the TX queue context
2154          * initialization. This has to be done regardless of
2155          * DCB as by default everything is mapped to TC0.
2156          */
2157         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2158         tx_ctx.rdylist_act = 0;
2159
2160         /* clear the context in the HMC */
2161         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2162         if (err) {
2163                 dev_info(&vsi->back->pdev->dev,
2164                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2165                          ring->queue_index, pf_q, err);
2166                 return -ENOMEM;
2167         }
2168
2169         /* set the context in the HMC */
2170         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2171         if (err) {
2172                 dev_info(&vsi->back->pdev->dev,
2173                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2174                          ring->queue_index, pf_q, err);
2175                 return -ENOMEM;
2176         }
2177
2178         /* Now associate this queue with this PCI function */
2179         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2180         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2181                     I40E_QTX_CTL_PF_INDX_MASK);
2182         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2183         i40e_flush(hw);
2184
2185         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2186
2187         /* cache tail off for easier writes later */
2188         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2189
2190         return 0;
2191 }
2192
2193 /**
2194  * i40e_configure_rx_ring - Configure a receive ring context
2195  * @ring: The Rx ring to configure
2196  *
2197  * Configure the Rx descriptor ring in the HMC context.
2198  **/
2199 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2200 {
2201         struct i40e_vsi *vsi = ring->vsi;
2202         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2203         u16 pf_q = vsi->base_queue + ring->queue_index;
2204         struct i40e_hw *hw = &vsi->back->hw;
2205         struct i40e_hmc_obj_rxq rx_ctx;
2206         i40e_status err = 0;
2207
2208         ring->state = 0;
2209
2210         /* clear the context structure first */
2211         memset(&rx_ctx, 0, sizeof(rx_ctx));
2212
2213         ring->rx_buf_len = vsi->rx_buf_len;
2214         ring->rx_hdr_len = vsi->rx_hdr_len;
2215
2216         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2217         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2218
2219         rx_ctx.base = (ring->dma / 128);
2220         rx_ctx.qlen = ring->count;
2221
2222         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2223                 set_ring_16byte_desc_enabled(ring);
2224                 rx_ctx.dsize = 0;
2225         } else {
2226                 rx_ctx.dsize = 1;
2227         }
2228
2229         rx_ctx.dtype = vsi->dtype;
2230         if (vsi->dtype) {
2231                 set_ring_ps_enabled(ring);
2232                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2233                                   I40E_RX_SPLIT_IP      |
2234                                   I40E_RX_SPLIT_TCP_UDP |
2235                                   I40E_RX_SPLIT_SCTP;
2236         } else {
2237                 rx_ctx.hsplit_0 = 0;
2238         }
2239
2240         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2241                                   (chain_len * ring->rx_buf_len));
2242         rx_ctx.tphrdesc_ena = 1;
2243         rx_ctx.tphwdesc_ena = 1;
2244         rx_ctx.tphdata_ena = 1;
2245         rx_ctx.tphhead_ena = 1;
2246         rx_ctx.lrxqthresh = 2;
2247         rx_ctx.crcstrip = 1;
2248         rx_ctx.l2tsel = 1;
2249         rx_ctx.showiv = 1;
2250
2251         /* clear the context in the HMC */
2252         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2253         if (err) {
2254                 dev_info(&vsi->back->pdev->dev,
2255                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2256                          ring->queue_index, pf_q, err);
2257                 return -ENOMEM;
2258         }
2259
2260         /* set the context in the HMC */
2261         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2262         if (err) {
2263                 dev_info(&vsi->back->pdev->dev,
2264                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2265                          ring->queue_index, pf_q, err);
2266                 return -ENOMEM;
2267         }
2268
2269         /* cache tail for quicker writes, and clear the reg before use */
2270         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2271         writel(0, ring->tail);
2272
2273         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2274
2275         return 0;
2276 }
2277
2278 /**
2279  * i40e_vsi_configure_tx - Configure the VSI for Tx
2280  * @vsi: VSI structure describing this set of rings and resources
2281  *
2282  * Configure the Tx VSI for operation.
2283  **/
2284 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2285 {
2286         int err = 0;
2287         u16 i;
2288
2289         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2290                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2291
2292         return err;
2293 }
2294
2295 /**
2296  * i40e_vsi_configure_rx - Configure the VSI for Rx
2297  * @vsi: the VSI being configured
2298  *
2299  * Configure the Rx VSI for operation.
2300  **/
2301 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2302 {
2303         int err = 0;
2304         u16 i;
2305
2306         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2307                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2308                                + ETH_FCS_LEN + VLAN_HLEN;
2309         else
2310                 vsi->max_frame = I40E_RXBUFFER_2048;
2311
2312         /* figure out correct receive buffer length */
2313         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2314                                     I40E_FLAG_RX_PS_ENABLED)) {
2315         case I40E_FLAG_RX_1BUF_ENABLED:
2316                 vsi->rx_hdr_len = 0;
2317                 vsi->rx_buf_len = vsi->max_frame;
2318                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2319                 break;
2320         case I40E_FLAG_RX_PS_ENABLED:
2321                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2322                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2323                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2324                 break;
2325         default:
2326                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2327                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2328                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2329                 break;
2330         }
2331
2332         /* round up for the chip's needs */
2333         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2334                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2335         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2336                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2337
2338         /* set up individual rings */
2339         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2340                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2341
2342         return err;
2343 }
2344
2345 /**
2346  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2347  * @vsi: ptr to the VSI
2348  **/
2349 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2350 {
2351         u16 qoffset, qcount;
2352         int i, n;
2353
2354         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2355                 return;
2356
2357         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2358                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2359                         continue;
2360
2361                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2362                 qcount = vsi->tc_config.tc_info[n].qcount;
2363                 for (i = qoffset; i < (qoffset + qcount); i++) {
2364                         struct i40e_ring *rx_ring = vsi->rx_rings[i];
2365                         struct i40e_ring *tx_ring = vsi->tx_rings[i];
2366                         rx_ring->dcb_tc = n;
2367                         tx_ring->dcb_tc = n;
2368                 }
2369         }
2370 }
2371
2372 /**
2373  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2374  * @vsi: ptr to the VSI
2375  **/
2376 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2377 {
2378         if (vsi->netdev)
2379                 i40e_set_rx_mode(vsi->netdev);
2380 }
2381
2382 /**
2383  * i40e_vsi_configure - Set up the VSI for action
2384  * @vsi: the VSI being configured
2385  **/
2386 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2387 {
2388         int err;
2389
2390         i40e_set_vsi_rx_mode(vsi);
2391         i40e_restore_vlan(vsi);
2392         i40e_vsi_config_dcb_rings(vsi);
2393         err = i40e_vsi_configure_tx(vsi);
2394         if (!err)
2395                 err = i40e_vsi_configure_rx(vsi);
2396
2397         return err;
2398 }
2399
2400 /**
2401  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2402  * @vsi: the VSI being configured
2403  **/
2404 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2405 {
2406         struct i40e_pf *pf = vsi->back;
2407         struct i40e_q_vector *q_vector;
2408         struct i40e_hw *hw = &pf->hw;
2409         u16 vector;
2410         int i, q;
2411         u32 val;
2412         u32 qp;
2413
2414         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2415          * and PFINT_LNKLSTn registers, e.g.:
2416          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2417          */
2418         qp = vsi->base_queue;
2419         vector = vsi->base_vector;
2420         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2421                 q_vector = vsi->q_vectors[i];
2422                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2423                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2424                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2425                      q_vector->rx.itr);
2426                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2427                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2428                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2429                      q_vector->tx.itr);
2430
2431                 /* Linked list for the queuepairs assigned to this vector */
2432                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2433                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2434                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2435                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2436                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2437                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2438                               (I40E_QUEUE_TYPE_TX
2439                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2440
2441                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2442
2443                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2444                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2445                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2446                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2447                               (I40E_QUEUE_TYPE_RX
2448                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2449
2450                         /* Terminate the linked list */
2451                         if (q == (q_vector->num_ringpairs - 1))
2452                                 val |= (I40E_QUEUE_END_OF_LIST
2453                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2454
2455                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2456                         qp++;
2457                 }
2458         }
2459
2460         i40e_flush(hw);
2461 }
2462
2463 /**
2464  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2465  * @hw: ptr to the hardware info
2466  **/
2467 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2468 {
2469         u32 val;
2470
2471         /* clear things first */
2472         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2473         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2474
2475         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2476               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2477               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2478               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2479               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2480               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2481               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2482               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2483               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2484
2485         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2486
2487         /* SW_ITR_IDX = 0, but don't change INTENA */
2488         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK |
2489                                         I40E_PFINT_DYN_CTLN_INTENA_MSK_MASK);
2490
2491         /* OTHER_ITR_IDX = 0 */
2492         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2493 }
2494
2495 /**
2496  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2497  * @vsi: the VSI being configured
2498  **/
2499 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2500 {
2501         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2502         struct i40e_pf *pf = vsi->back;
2503         struct i40e_hw *hw = &pf->hw;
2504         u32 val;
2505
2506         /* set the ITR configuration */
2507         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2508         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2509         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2510         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2511         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2512         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2513
2514         i40e_enable_misc_int_causes(hw);
2515
2516         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2517         wr32(hw, I40E_PFINT_LNKLST0, 0);
2518
2519         /* Associate the queue pair to the vector and enable the q int */
2520         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2521               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2522               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2523
2524         wr32(hw, I40E_QINT_RQCTL(0), val);
2525
2526         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2527               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2528               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2529
2530         wr32(hw, I40E_QINT_TQCTL(0), val);
2531         i40e_flush(hw);
2532 }
2533
2534 /**
2535  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2536  * @pf: board private structure
2537  **/
2538 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2539 {
2540         struct i40e_hw *hw = &pf->hw;
2541         u32 val;
2542
2543         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2544               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2545               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2546
2547         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2548         i40e_flush(hw);
2549 }
2550
2551 /**
2552  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2553  * @vsi: pointer to a vsi
2554  * @vector: enable a particular Hw Interrupt vector
2555  **/
2556 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2557 {
2558         struct i40e_pf *pf = vsi->back;
2559         struct i40e_hw *hw = &pf->hw;
2560         u32 val;
2561
2562         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2563               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2564               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2565         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2566         /* skip the flush */
2567 }
2568
2569 /**
2570  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2571  * @irq: interrupt number
2572  * @data: pointer to a q_vector
2573  **/
2574 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2575 {
2576         struct i40e_q_vector *q_vector = data;
2577
2578         if (!q_vector->tx.ring && !q_vector->rx.ring)
2579                 return IRQ_HANDLED;
2580
2581         napi_schedule(&q_vector->napi);
2582
2583         return IRQ_HANDLED;
2584 }
2585
2586 /**
2587  * i40e_fdir_clean_rings - Interrupt Handler for FDIR rings
2588  * @irq: interrupt number
2589  * @data: pointer to a q_vector
2590  **/
2591 static irqreturn_t i40e_fdir_clean_rings(int irq, void *data)
2592 {
2593         struct i40e_q_vector *q_vector = data;
2594
2595         if (!q_vector->tx.ring && !q_vector->rx.ring)
2596                 return IRQ_HANDLED;
2597
2598         pr_info("fdir ring cleaning needed\n");
2599
2600         return IRQ_HANDLED;
2601 }
2602
2603 /**
2604  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2605  * @vsi: the VSI being configured
2606  * @basename: name for the vector
2607  *
2608  * Allocates MSI-X vectors and requests interrupts from the kernel.
2609  **/
2610 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2611 {
2612         int q_vectors = vsi->num_q_vectors;
2613         struct i40e_pf *pf = vsi->back;
2614         int base = vsi->base_vector;
2615         int rx_int_idx = 0;
2616         int tx_int_idx = 0;
2617         int vector, err;
2618
2619         for (vector = 0; vector < q_vectors; vector++) {
2620                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2621
2622                 if (q_vector->tx.ring && q_vector->rx.ring) {
2623                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2624                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2625                         tx_int_idx++;
2626                 } else if (q_vector->rx.ring) {
2627                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2628                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2629                 } else if (q_vector->tx.ring) {
2630                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2631                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2632                 } else {
2633                         /* skip this unused q_vector */
2634                         continue;
2635                 }
2636                 err = request_irq(pf->msix_entries[base + vector].vector,
2637                                   vsi->irq_handler,
2638                                   0,
2639                                   q_vector->name,
2640                                   q_vector);
2641                 if (err) {
2642                         dev_info(&pf->pdev->dev,
2643                                  "%s: request_irq failed, error: %d\n",
2644                                  __func__, err);
2645                         goto free_queue_irqs;
2646                 }
2647                 /* assign the mask for this irq */
2648                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2649                                       &q_vector->affinity_mask);
2650         }
2651
2652         return 0;
2653
2654 free_queue_irqs:
2655         while (vector) {
2656                 vector--;
2657                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2658                                       NULL);
2659                 free_irq(pf->msix_entries[base + vector].vector,
2660                          &(vsi->q_vectors[vector]));
2661         }
2662         return err;
2663 }
2664
2665 /**
2666  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2667  * @vsi: the VSI being un-configured
2668  **/
2669 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2670 {
2671         struct i40e_pf *pf = vsi->back;
2672         struct i40e_hw *hw = &pf->hw;
2673         int base = vsi->base_vector;
2674         int i;
2675
2676         for (i = 0; i < vsi->num_queue_pairs; i++) {
2677                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2678                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2679         }
2680
2681         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2682                 for (i = vsi->base_vector;
2683                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2684                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2685
2686                 i40e_flush(hw);
2687                 for (i = 0; i < vsi->num_q_vectors; i++)
2688                         synchronize_irq(pf->msix_entries[i + base].vector);
2689         } else {
2690                 /* Legacy and MSI mode - this stops all interrupt handling */
2691                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2692                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2693                 i40e_flush(hw);
2694                 synchronize_irq(pf->pdev->irq);
2695         }
2696 }
2697
2698 /**
2699  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2700  * @vsi: the VSI being configured
2701  **/
2702 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2703 {
2704         struct i40e_pf *pf = vsi->back;
2705         int i;
2706
2707         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2708                 for (i = vsi->base_vector;
2709                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2710                         i40e_irq_dynamic_enable(vsi, i);
2711         } else {
2712                 i40e_irq_dynamic_enable_icr0(pf);
2713         }
2714
2715         i40e_flush(&pf->hw);
2716         return 0;
2717 }
2718
2719 /**
2720  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2721  * @pf: board private structure
2722  **/
2723 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2724 {
2725         /* Disable ICR 0 */
2726         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2727         i40e_flush(&pf->hw);
2728 }
2729
2730 /**
2731  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2732  * @irq: interrupt number
2733  * @data: pointer to a q_vector
2734  *
2735  * This is the handler used for all MSI/Legacy interrupts, and deals
2736  * with both queue and non-queue interrupts.  This is also used in
2737  * MSIX mode to handle the non-queue interrupts.
2738  **/
2739 static irqreturn_t i40e_intr(int irq, void *data)
2740 {
2741         struct i40e_pf *pf = (struct i40e_pf *)data;
2742         struct i40e_hw *hw = &pf->hw;
2743         u32 icr0, icr0_remaining;
2744         u32 val, ena_mask;
2745
2746         icr0 = rd32(hw, I40E_PFINT_ICR0);
2747
2748         val = rd32(hw, I40E_PFINT_DYN_CTL0);
2749         val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
2750         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2751
2752         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2753         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2754                 return IRQ_NONE;
2755
2756         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2757
2758         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2759         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2760
2761                 /* temporarily disable queue cause for NAPI processing */
2762                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2763                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2764                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2765
2766                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2767                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2768                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2769
2770                 if (!test_bit(__I40E_DOWN, &pf->state))
2771                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2772         }
2773
2774         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2775                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2776                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2777         }
2778
2779         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2780                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2781                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2782         }
2783
2784         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2785                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2786                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2787         }
2788
2789         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2790                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2791                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2792                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2793                 val = rd32(hw, I40E_GLGEN_RSTAT);
2794                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2795                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2796                 if (val & I40E_RESET_CORER)
2797                         pf->corer_count++;
2798                 else if (val & I40E_RESET_GLOBR)
2799                         pf->globr_count++;
2800                 else if (val & I40E_RESET_EMPR)
2801                         pf->empr_count++;
2802         }
2803
2804         /* If a critical error is pending we have no choice but to reset the
2805          * device.
2806          * Report and mask out any remaining unexpected interrupts.
2807          */
2808         icr0_remaining = icr0 & ena_mask;
2809         if (icr0_remaining) {
2810                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2811                          icr0_remaining);
2812                 if ((icr0_remaining & I40E_PFINT_ICR0_HMC_ERR_MASK) ||
2813                     (icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2814                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2815                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) ||
2816                     (icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) {
2817                         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2818                                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2819                         } else {
2820                                 dev_info(&pf->pdev->dev, "device will be reset\n");
2821                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2822                                 i40e_service_event_schedule(pf);
2823                         }
2824                 }
2825                 ena_mask &= ~icr0_remaining;
2826         }
2827
2828         /* re-enable interrupt causes */
2829         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2830         if (!test_bit(__I40E_DOWN, &pf->state)) {
2831                 i40e_service_event_schedule(pf);
2832                 i40e_irq_dynamic_enable_icr0(pf);
2833         }
2834
2835         return IRQ_HANDLED;
2836 }
2837
2838 /**
2839  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
2840  * @vsi: the VSI being configured
2841  * @v_idx: vector index
2842  * @qp_idx: queue pair index
2843  **/
2844 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
2845 {
2846         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
2847         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
2848         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
2849
2850         tx_ring->q_vector = q_vector;
2851         tx_ring->next = q_vector->tx.ring;
2852         q_vector->tx.ring = tx_ring;
2853         q_vector->tx.count++;
2854
2855         rx_ring->q_vector = q_vector;
2856         rx_ring->next = q_vector->rx.ring;
2857         q_vector->rx.ring = rx_ring;
2858         q_vector->rx.count++;
2859 }
2860
2861 /**
2862  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
2863  * @vsi: the VSI being configured
2864  *
2865  * This function maps descriptor rings to the queue-specific vectors
2866  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
2867  * one vector per queue pair, but on a constrained vector budget, we
2868  * group the queue pairs as "efficiently" as possible.
2869  **/
2870 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
2871 {
2872         int qp_remaining = vsi->num_queue_pairs;
2873         int q_vectors = vsi->num_q_vectors;
2874         int num_ringpairs;
2875         int v_start = 0;
2876         int qp_idx = 0;
2877
2878         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
2879          * group them so there are multiple queues per vector.
2880          */
2881         for (; v_start < q_vectors && qp_remaining; v_start++) {
2882                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
2883
2884                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
2885
2886                 q_vector->num_ringpairs = num_ringpairs;
2887
2888                 q_vector->rx.count = 0;
2889                 q_vector->tx.count = 0;
2890                 q_vector->rx.ring = NULL;
2891                 q_vector->tx.ring = NULL;
2892
2893                 while (num_ringpairs--) {
2894                         map_vector_to_qp(vsi, v_start, qp_idx);
2895                         qp_idx++;
2896                         qp_remaining--;
2897                 }
2898         }
2899 }
2900
2901 /**
2902  * i40e_vsi_request_irq - Request IRQ from the OS
2903  * @vsi: the VSI being configured
2904  * @basename: name for the vector
2905  **/
2906 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
2907 {
2908         struct i40e_pf *pf = vsi->back;
2909         int err;
2910
2911         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
2912                 err = i40e_vsi_request_irq_msix(vsi, basename);
2913         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
2914                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
2915                                   pf->misc_int_name, pf);
2916         else
2917                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
2918                                   pf->misc_int_name, pf);
2919
2920         if (err)
2921                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
2922
2923         return err;
2924 }
2925
2926 #ifdef CONFIG_NET_POLL_CONTROLLER
2927 /**
2928  * i40e_netpoll - A Polling 'interrupt'handler
2929  * @netdev: network interface device structure
2930  *
2931  * This is used by netconsole to send skbs without having to re-enable
2932  * interrupts.  It's not called while the normal interrupt routine is executing.
2933  **/
2934 static void i40e_netpoll(struct net_device *netdev)
2935 {
2936         struct i40e_netdev_priv *np = netdev_priv(netdev);
2937         struct i40e_vsi *vsi = np->vsi;
2938         struct i40e_pf *pf = vsi->back;
2939         int i;
2940
2941         /* if interface is down do nothing */
2942         if (test_bit(__I40E_DOWN, &vsi->state))
2943                 return;
2944
2945         pf->flags |= I40E_FLAG_IN_NETPOLL;
2946         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2947                 for (i = 0; i < vsi->num_q_vectors; i++)
2948                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
2949         } else {
2950                 i40e_intr(pf->pdev->irq, netdev);
2951         }
2952         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
2953 }
2954 #endif
2955
2956 /**
2957  * i40e_vsi_control_tx - Start or stop a VSI's rings
2958  * @vsi: the VSI being configured
2959  * @enable: start or stop the rings
2960  **/
2961 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
2962 {
2963         struct i40e_pf *pf = vsi->back;
2964         struct i40e_hw *hw = &pf->hw;
2965         int i, j, pf_q;
2966         u32 tx_reg;
2967
2968         pf_q = vsi->base_queue;
2969         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
2970                 j = 1000;
2971                 do {
2972                         usleep_range(1000, 2000);
2973                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
2974                 } while (j-- && ((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT)
2975                                ^ (tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT)) & 1);
2976
2977                 if (enable) {
2978                         /* is STAT set ? */
2979                         if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
2980                                 dev_info(&pf->pdev->dev,
2981                                          "Tx %d already enabled\n", i);
2982                                 continue;
2983                         }
2984                 } else {
2985                         /* is !STAT set ? */
2986                         if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
2987                                 dev_info(&pf->pdev->dev,
2988                                          "Tx %d already disabled\n", i);
2989                                 continue;
2990                         }
2991                 }
2992
2993                 /* turn on/off the queue */
2994                 if (enable)
2995                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK |
2996                                   I40E_QTX_ENA_QENA_STAT_MASK;
2997                 else
2998                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
2999
3000                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3001
3002                 /* wait for the change to finish */
3003                 for (j = 0; j < 10; j++) {
3004                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3005                         if (enable) {
3006                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3007                                         break;
3008                         } else {
3009                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3010                                         break;
3011                         }
3012
3013                         udelay(10);
3014                 }
3015                 if (j >= 10) {
3016                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3017                                  pf_q, (enable ? "en" : "dis"));
3018                         return -ETIMEDOUT;
3019                 }
3020         }
3021
3022         return 0;
3023 }
3024
3025 /**
3026  * i40e_vsi_control_rx - Start or stop a VSI's rings
3027  * @vsi: the VSI being configured
3028  * @enable: start or stop the rings
3029  **/
3030 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3031 {
3032         struct i40e_pf *pf = vsi->back;
3033         struct i40e_hw *hw = &pf->hw;
3034         int i, j, pf_q;
3035         u32 rx_reg;
3036
3037         pf_q = vsi->base_queue;
3038         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3039                 j = 1000;
3040                 do {
3041                         usleep_range(1000, 2000);
3042                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3043                 } while (j-- && ((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT)
3044                                ^ (rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT)) & 1);
3045
3046                 if (enable) {
3047                         /* is STAT set ? */
3048                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3049                                 continue;
3050                 } else {
3051                         /* is !STAT set ? */
3052                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3053                                 continue;
3054                 }
3055
3056                 /* turn on/off the queue */
3057                 if (enable)
3058                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK |
3059                                   I40E_QRX_ENA_QENA_STAT_MASK;
3060                 else
3061                         rx_reg &= ~(I40E_QRX_ENA_QENA_REQ_MASK |
3062                                   I40E_QRX_ENA_QENA_STAT_MASK);
3063                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3064
3065                 /* wait for the change to finish */
3066                 for (j = 0; j < 10; j++) {
3067                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3068
3069                         if (enable) {
3070                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3071                                         break;
3072                         } else {
3073                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3074                                         break;
3075                         }
3076
3077                         udelay(10);
3078                 }
3079                 if (j >= 10) {
3080                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3081                                  pf_q, (enable ? "en" : "dis"));
3082                         return -ETIMEDOUT;
3083                 }
3084         }
3085
3086         return 0;
3087 }
3088
3089 /**
3090  * i40e_vsi_control_rings - Start or stop a VSI's rings
3091  * @vsi: the VSI being configured
3092  * @enable: start or stop the rings
3093  **/
3094 static int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3095 {
3096         int ret;
3097
3098         /* do rx first for enable and last for disable */
3099         if (request) {
3100                 ret = i40e_vsi_control_rx(vsi, request);
3101                 if (ret)
3102                         return ret;
3103                 ret = i40e_vsi_control_tx(vsi, request);
3104         } else {
3105                 ret = i40e_vsi_control_tx(vsi, request);
3106                 if (ret)
3107                         return ret;
3108                 ret = i40e_vsi_control_rx(vsi, request);
3109         }
3110
3111         return ret;
3112 }
3113
3114 /**
3115  * i40e_vsi_free_irq - Free the irq association with the OS
3116  * @vsi: the VSI being configured
3117  **/
3118 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3119 {
3120         struct i40e_pf *pf = vsi->back;
3121         struct i40e_hw *hw = &pf->hw;
3122         int base = vsi->base_vector;
3123         u32 val, qp;
3124         int i;
3125
3126         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3127                 if (!vsi->q_vectors)
3128                         return;
3129
3130                 for (i = 0; i < vsi->num_q_vectors; i++) {
3131                         u16 vector = i + base;
3132
3133                         /* free only the irqs that were actually requested */
3134                         if (vsi->q_vectors[i]->num_ringpairs == 0)
3135                                 continue;
3136
3137                         /* clear the affinity_mask in the IRQ descriptor */
3138                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3139                                               NULL);
3140                         free_irq(pf->msix_entries[vector].vector,
3141                                  vsi->q_vectors[i]);
3142
3143                         /* Tear down the interrupt queue link list
3144                          *
3145                          * We know that they come in pairs and always
3146                          * the Rx first, then the Tx.  To clear the
3147                          * link list, stick the EOL value into the
3148                          * next_q field of the registers.
3149                          */
3150                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3151                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3152                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3153                         val |= I40E_QUEUE_END_OF_LIST
3154                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3155                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3156
3157                         while (qp != I40E_QUEUE_END_OF_LIST) {
3158                                 u32 next;
3159
3160                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3161
3162                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3163                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3164                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3165                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3166
3167                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3168                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3169
3170                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3171
3172                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3173
3174                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3175                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3176
3177                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3178                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3179                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3180                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3181
3182                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3183                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3184
3185                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3186                                 qp = next;
3187                         }
3188                 }
3189         } else {
3190                 free_irq(pf->pdev->irq, pf);
3191
3192                 val = rd32(hw, I40E_PFINT_LNKLST0);
3193                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3194                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3195                 val |= I40E_QUEUE_END_OF_LIST
3196                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3197                 wr32(hw, I40E_PFINT_LNKLST0, val);
3198
3199                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3200                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3201                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3202                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3203                          I40E_QINT_RQCTL_INTEVENT_MASK);
3204
3205                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3206                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3207
3208                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3209
3210                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3211
3212                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3213                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3214                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3215                          I40E_QINT_TQCTL_INTEVENT_MASK);
3216
3217                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3218                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3219
3220                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3221         }
3222 }
3223
3224 /**
3225  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3226  * @vsi: the VSI being configured
3227  * @v_idx: Index of vector to be freed
3228  *
3229  * This function frees the memory allocated to the q_vector.  In addition if
3230  * NAPI is enabled it will delete any references to the NAPI struct prior
3231  * to freeing the q_vector.
3232  **/
3233 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3234 {
3235         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3236         struct i40e_ring *ring;
3237
3238         if (!q_vector)
3239                 return;
3240
3241         /* disassociate q_vector from rings */
3242         i40e_for_each_ring(ring, q_vector->tx)
3243                 ring->q_vector = NULL;
3244
3245         i40e_for_each_ring(ring, q_vector->rx)
3246                 ring->q_vector = NULL;
3247
3248         /* only VSI w/ an associated netdev is set up w/ NAPI */
3249         if (vsi->netdev)
3250                 netif_napi_del(&q_vector->napi);
3251
3252         vsi->q_vectors[v_idx] = NULL;
3253
3254         kfree_rcu(q_vector, rcu);
3255 }
3256
3257 /**
3258  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3259  * @vsi: the VSI being un-configured
3260  *
3261  * This frees the memory allocated to the q_vectors and
3262  * deletes references to the NAPI struct.
3263  **/
3264 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3265 {
3266         int v_idx;
3267
3268         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3269                 i40e_free_q_vector(vsi, v_idx);
3270 }
3271
3272 /**
3273  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3274  * @pf: board private structure
3275  **/
3276 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3277 {
3278         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3279         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3280                 pci_disable_msix(pf->pdev);
3281                 kfree(pf->msix_entries);
3282                 pf->msix_entries = NULL;
3283         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3284                 pci_disable_msi(pf->pdev);
3285         }
3286         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3287 }
3288
3289 /**
3290  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3291  * @pf: board private structure
3292  *
3293  * We go through and clear interrupt specific resources and reset the structure
3294  * to pre-load conditions
3295  **/
3296 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3297 {
3298         int i;
3299
3300         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3301         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3302                 if (pf->vsi[i])
3303                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3304         i40e_reset_interrupt_capability(pf);
3305 }
3306
3307 /**
3308  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3309  * @vsi: the VSI being configured
3310  **/
3311 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3312 {
3313         int q_idx;
3314
3315         if (!vsi->netdev)
3316                 return;
3317
3318         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3319                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3320 }
3321
3322 /**
3323  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3324  * @vsi: the VSI being configured
3325  **/
3326 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3327 {
3328         int q_idx;
3329
3330         if (!vsi->netdev)
3331                 return;
3332
3333         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3334                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3335 }
3336
3337 /**
3338  * i40e_quiesce_vsi - Pause a given VSI
3339  * @vsi: the VSI being paused
3340  **/
3341 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3342 {
3343         if (test_bit(__I40E_DOWN, &vsi->state))
3344                 return;
3345
3346         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3347         if (vsi->netdev && netif_running(vsi->netdev)) {
3348                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3349         } else {
3350                 set_bit(__I40E_DOWN, &vsi->state);
3351                 i40e_down(vsi);
3352         }
3353 }
3354
3355 /**
3356  * i40e_unquiesce_vsi - Resume a given VSI
3357  * @vsi: the VSI being resumed
3358  **/
3359 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3360 {
3361         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3362                 return;
3363
3364         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3365         if (vsi->netdev && netif_running(vsi->netdev))
3366                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3367         else
3368                 i40e_up(vsi);   /* this clears the DOWN bit */
3369 }
3370
3371 /**
3372  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3373  * @pf: the PF
3374  **/
3375 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3376 {
3377         int v;
3378
3379         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3380                 if (pf->vsi[v])
3381                         i40e_quiesce_vsi(pf->vsi[v]);
3382         }
3383 }
3384
3385 /**
3386  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3387  * @pf: the PF
3388  **/
3389 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3390 {
3391         int v;
3392
3393         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3394                 if (pf->vsi[v])
3395                         i40e_unquiesce_vsi(pf->vsi[v]);
3396         }
3397 }
3398
3399 /**
3400  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3401  * @dcbcfg: the corresponding DCBx configuration structure
3402  *
3403  * Return the number of TCs from given DCBx configuration
3404  **/
3405 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3406 {
3407         u8 num_tc = 0;
3408         int i;
3409
3410         /* Scan the ETS Config Priority Table to find
3411          * traffic class enabled for a given priority
3412          * and use the traffic class index to get the
3413          * number of traffic classes enabled
3414          */
3415         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3416                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3417                         num_tc = dcbcfg->etscfg.prioritytable[i];
3418         }
3419
3420         /* Traffic class index starts from zero so
3421          * increment to return the actual count
3422          */
3423         return num_tc + 1;
3424 }
3425
3426 /**
3427  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3428  * @dcbcfg: the corresponding DCBx configuration structure
3429  *
3430  * Query the current DCB configuration and return the number of
3431  * traffic classes enabled from the given DCBX config
3432  **/
3433 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3434 {
3435         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3436         u8 enabled_tc = 1;
3437         u8 i;
3438
3439         for (i = 0; i < num_tc; i++)
3440                 enabled_tc |= 1 << i;
3441
3442         return enabled_tc;
3443 }
3444
3445 /**
3446  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3447  * @pf: PF being queried
3448  *
3449  * Return number of traffic classes enabled for the given PF
3450  **/
3451 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3452 {
3453         struct i40e_hw *hw = &pf->hw;
3454         u8 i, enabled_tc;
3455         u8 num_tc = 0;
3456         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3457
3458         /* If DCB is not enabled then always in single TC */
3459         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3460                 return 1;
3461
3462         /* MFP mode return count of enabled TCs for this PF */
3463         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3464                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3465                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3466                         if (enabled_tc & (1 << i))
3467                                 num_tc++;
3468                 }
3469                 return num_tc;
3470         }
3471
3472         /* SFP mode will be enabled for all TCs on port */
3473         return i40e_dcb_get_num_tc(dcbcfg);
3474 }
3475
3476 /**
3477  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3478  * @pf: PF being queried
3479  *
3480  * Return a bitmap for first enabled traffic class for this PF.
3481  **/
3482 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3483 {
3484         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3485         u8 i = 0;
3486
3487         if (!enabled_tc)
3488                 return 0x1; /* TC0 */
3489
3490         /* Find the first enabled TC */
3491         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3492                 if (enabled_tc & (1 << i))
3493                         break;
3494         }
3495
3496         return 1 << i;
3497 }
3498
3499 /**
3500  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3501  * @pf: PF being queried
3502  *
3503  * Return a bitmap for enabled traffic classes for this PF.
3504  **/
3505 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3506 {
3507         /* If DCB is not enabled for this PF then just return default TC */
3508         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3509                 return i40e_pf_get_default_tc(pf);
3510
3511         /* MFP mode will have enabled TCs set by FW */
3512         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3513                 return pf->hw.func_caps.enabled_tcmap;
3514
3515         /* SFP mode we want PF to be enabled for all TCs */
3516         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3517 }
3518
3519 /**
3520  * i40e_vsi_get_bw_info - Query VSI BW Information
3521  * @vsi: the VSI being queried
3522  *
3523  * Returns 0 on success, negative value on failure
3524  **/
3525 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3526 {
3527         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3528         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3529         struct i40e_pf *pf = vsi->back;
3530         struct i40e_hw *hw = &pf->hw;
3531         i40e_status aq_ret;
3532         u32 tc_bw_max;
3533         int i;
3534
3535         /* Get the VSI level BW configuration */
3536         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3537         if (aq_ret) {
3538                 dev_info(&pf->pdev->dev,
3539                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3540                          aq_ret, pf->hw.aq.asq_last_status);
3541                 return -EINVAL;
3542         }
3543
3544         /* Get the VSI level BW configuration per TC */
3545         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3546                                                   NULL);
3547         if (aq_ret) {
3548                 dev_info(&pf->pdev->dev,
3549                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3550                          aq_ret, pf->hw.aq.asq_last_status);
3551                 return -EINVAL;
3552         }
3553
3554         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3555                 dev_info(&pf->pdev->dev,
3556                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3557                          bw_config.tc_valid_bits,
3558                          bw_ets_config.tc_valid_bits);
3559                 /* Still continuing */
3560         }
3561
3562         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3563         vsi->bw_max_quanta = bw_config.max_bw;
3564         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3565                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3566         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3567                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3568                 vsi->bw_ets_limit_credits[i] =
3569                                         le16_to_cpu(bw_ets_config.credits[i]);
3570                 /* 3 bits out of 4 for each TC */
3571                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3572         }
3573
3574         return 0;
3575 }
3576
3577 /**
3578  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3579  * @vsi: the VSI being configured
3580  * @enabled_tc: TC bitmap
3581  * @bw_credits: BW shared credits per TC
3582  *
3583  * Returns 0 on success, negative value on failure
3584  **/
3585 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3586                                        u8 *bw_share)
3587 {
3588         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3589         i40e_status aq_ret;
3590         int i;
3591
3592         bw_data.tc_valid_bits = enabled_tc;
3593         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3594                 bw_data.tc_bw_credits[i] = bw_share[i];
3595
3596         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3597                                           NULL);
3598         if (aq_ret) {
3599                 dev_info(&vsi->back->pdev->dev,
3600                          "%s: AQ command Config VSI BW allocation per TC failed = %d\n",
3601                          __func__, vsi->back->hw.aq.asq_last_status);
3602                 return -EINVAL;
3603         }
3604
3605         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3606                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3607
3608         return 0;
3609 }
3610
3611 /**
3612  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3613  * @vsi: the VSI being configured
3614  * @enabled_tc: TC map to be enabled
3615  *
3616  **/
3617 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3618 {
3619         struct net_device *netdev = vsi->netdev;
3620         struct i40e_pf *pf = vsi->back;
3621         struct i40e_hw *hw = &pf->hw;
3622         u8 netdev_tc = 0;
3623         int i;
3624         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3625
3626         if (!netdev)
3627                 return;
3628
3629         if (!enabled_tc) {
3630                 netdev_reset_tc(netdev);
3631                 return;
3632         }
3633
3634         /* Set up actual enabled TCs on the VSI */
3635         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3636                 return;
3637
3638         /* set per TC queues for the VSI */
3639         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3640                 /* Only set TC queues for enabled tcs
3641                  *
3642                  * e.g. For a VSI that has TC0 and TC3 enabled the
3643                  * enabled_tc bitmap would be 0x00001001; the driver
3644                  * will set the numtc for netdev as 2 that will be
3645                  * referenced by the netdev layer as TC 0 and 1.
3646                  */
3647                 if (vsi->tc_config.enabled_tc & (1 << i))
3648                         netdev_set_tc_queue(netdev,
3649                                         vsi->tc_config.tc_info[i].netdev_tc,
3650                                         vsi->tc_config.tc_info[i].qcount,
3651                                         vsi->tc_config.tc_info[i].qoffset);
3652         }
3653
3654         /* Assign UP2TC map for the VSI */
3655         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3656                 /* Get the actual TC# for the UP */
3657                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3658                 /* Get the mapped netdev TC# for the UP */
3659                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3660                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3661         }
3662 }
3663
3664 /**
3665  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3666  * @vsi: the VSI being configured
3667  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3668  **/
3669 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3670                                       struct i40e_vsi_context *ctxt)
3671 {
3672         /* copy just the sections touched not the entire info
3673          * since not all sections are valid as returned by
3674          * update vsi params
3675          */
3676         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3677         memcpy(&vsi->info.queue_mapping,
3678                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3679         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3680                sizeof(vsi->info.tc_mapping));
3681 }
3682
3683 /**
3684  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3685  * @vsi: VSI to be configured
3686  * @enabled_tc: TC bitmap
3687  *
3688  * This configures a particular VSI for TCs that are mapped to the
3689  * given TC bitmap. It uses default bandwidth share for TCs across
3690  * VSIs to configure TC for a particular VSI.
3691  *
3692  * NOTE:
3693  * It is expected that the VSI queues have been quisced before calling
3694  * this function.
3695  **/
3696 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3697 {
3698         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3699         struct i40e_vsi_context ctxt;
3700         int ret = 0;
3701         int i;
3702
3703         /* Check if enabled_tc is same as existing or new TCs */
3704         if (vsi->tc_config.enabled_tc == enabled_tc)
3705                 return ret;
3706
3707         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3708         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3709                 if (enabled_tc & (1 << i))
3710                         bw_share[i] = 1;
3711         }
3712
3713         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3714         if (ret) {
3715                 dev_info(&vsi->back->pdev->dev,
3716                          "Failed configuring TC map %d for VSI %d\n",
3717                          enabled_tc, vsi->seid);
3718                 goto out;
3719         }
3720
3721         /* Update Queue Pairs Mapping for currently enabled UPs */
3722         ctxt.seid = vsi->seid;
3723         ctxt.pf_num = vsi->back->hw.pf_id;
3724         ctxt.vf_num = 0;
3725         ctxt.uplink_seid = vsi->uplink_seid;
3726         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3727         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3728
3729         /* Update the VSI after updating the VSI queue-mapping information */
3730         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3731         if (ret) {
3732                 dev_info(&vsi->back->pdev->dev,
3733                          "update vsi failed, aq_err=%d\n",
3734                          vsi->back->hw.aq.asq_last_status);
3735                 goto out;
3736         }
3737         /* update the local VSI info with updated queue map */
3738         i40e_vsi_update_queue_map(vsi, &ctxt);
3739         vsi->info.valid_sections = 0;
3740
3741         /* Update current VSI BW information */
3742         ret = i40e_vsi_get_bw_info(vsi);
3743         if (ret) {
3744                 dev_info(&vsi->back->pdev->dev,
3745                          "Failed updating vsi bw info, aq_err=%d\n",
3746                          vsi->back->hw.aq.asq_last_status);
3747                 goto out;
3748         }
3749
3750         /* Update the netdev TC setup */
3751         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3752 out:
3753         return ret;
3754 }
3755
3756 /**
3757  * i40e_up_complete - Finish the last steps of bringing up a connection
3758  * @vsi: the VSI being configured
3759  **/
3760 static int i40e_up_complete(struct i40e_vsi *vsi)
3761 {
3762         struct i40e_pf *pf = vsi->back;
3763         int err;
3764
3765         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3766                 i40e_vsi_configure_msix(vsi);
3767         else
3768                 i40e_configure_msi_and_legacy(vsi);
3769
3770         /* start rings */
3771         err = i40e_vsi_control_rings(vsi, true);
3772         if (err)
3773                 return err;
3774
3775         clear_bit(__I40E_DOWN, &vsi->state);
3776         i40e_napi_enable_all(vsi);
3777         i40e_vsi_enable_irq(vsi);
3778
3779         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
3780             (vsi->netdev)) {
3781                 netdev_info(vsi->netdev, "NIC Link is Up\n");
3782                 netif_tx_start_all_queues(vsi->netdev);
3783                 netif_carrier_on(vsi->netdev);
3784         } else if (vsi->netdev) {
3785                 netdev_info(vsi->netdev, "NIC Link is Down\n");
3786         }
3787         i40e_service_event_schedule(pf);
3788
3789         return 0;
3790 }
3791
3792 /**
3793  * i40e_vsi_reinit_locked - Reset the VSI
3794  * @vsi: the VSI being configured
3795  *
3796  * Rebuild the ring structs after some configuration
3797  * has changed, e.g. MTU size.
3798  **/
3799 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
3800 {
3801         struct i40e_pf *pf = vsi->back;
3802
3803         WARN_ON(in_interrupt());
3804         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
3805                 usleep_range(1000, 2000);
3806         i40e_down(vsi);
3807
3808         /* Give a VF some time to respond to the reset.  The
3809          * two second wait is based upon the watchdog cycle in
3810          * the VF driver.
3811          */
3812         if (vsi->type == I40E_VSI_SRIOV)
3813                 msleep(2000);
3814         i40e_up(vsi);
3815         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
3816 }
3817
3818 /**
3819  * i40e_up - Bring the connection back up after being down
3820  * @vsi: the VSI being configured
3821  **/
3822 int i40e_up(struct i40e_vsi *vsi)
3823 {
3824         int err;
3825
3826         err = i40e_vsi_configure(vsi);
3827         if (!err)
3828                 err = i40e_up_complete(vsi);
3829
3830         return err;
3831 }
3832
3833 /**
3834  * i40e_down - Shutdown the connection processing
3835  * @vsi: the VSI being stopped
3836  **/
3837 void i40e_down(struct i40e_vsi *vsi)
3838 {
3839         int i;
3840
3841         /* It is assumed that the caller of this function
3842          * sets the vsi->state __I40E_DOWN bit.
3843          */
3844         if (vsi->netdev) {
3845                 netif_carrier_off(vsi->netdev);
3846                 netif_tx_disable(vsi->netdev);
3847         }
3848         i40e_vsi_disable_irq(vsi);
3849         i40e_vsi_control_rings(vsi, false);
3850         i40e_napi_disable_all(vsi);
3851
3852         for (i = 0; i < vsi->num_queue_pairs; i++) {
3853                 i40e_clean_tx_ring(vsi->tx_rings[i]);
3854                 i40e_clean_rx_ring(vsi->rx_rings[i]);
3855         }
3856 }
3857
3858 /**
3859  * i40e_setup_tc - configure multiple traffic classes
3860  * @netdev: net device to configure
3861  * @tc: number of traffic classes to enable
3862  **/
3863 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
3864 {
3865         struct i40e_netdev_priv *np = netdev_priv(netdev);
3866         struct i40e_vsi *vsi = np->vsi;
3867         struct i40e_pf *pf = vsi->back;
3868         u8 enabled_tc = 0;
3869         int ret = -EINVAL;
3870         int i;
3871
3872         /* Check if DCB enabled to continue */
3873         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
3874                 netdev_info(netdev, "DCB is not enabled for adapter\n");
3875                 goto exit;
3876         }
3877
3878         /* Check if MFP enabled */
3879         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3880                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
3881                 goto exit;
3882         }
3883
3884         /* Check whether tc count is within enabled limit */
3885         if (tc > i40e_pf_get_num_tc(pf)) {
3886                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
3887                 goto exit;
3888         }
3889
3890         /* Generate TC map for number of tc requested */
3891         for (i = 0; i < tc; i++)
3892                 enabled_tc |= (1 << i);
3893
3894         /* Requesting same TC configuration as already enabled */
3895         if (enabled_tc == vsi->tc_config.enabled_tc)
3896                 return 0;
3897
3898         /* Quiesce VSI queues */
3899         i40e_quiesce_vsi(vsi);
3900
3901         /* Configure VSI for enabled TCs */
3902         ret = i40e_vsi_config_tc(vsi, enabled_tc);
3903         if (ret) {
3904                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
3905                             vsi->seid);
3906                 goto exit;
3907         }
3908
3909         /* Unquiesce VSI */
3910         i40e_unquiesce_vsi(vsi);
3911
3912 exit:
3913         return ret;
3914 }
3915
3916 /**
3917  * i40e_open - Called when a network interface is made active
3918  * @netdev: network interface device structure
3919  *
3920  * The open entry point is called when a network interface is made
3921  * active by the system (IFF_UP).  At this point all resources needed
3922  * for transmit and receive operations are allocated, the interrupt
3923  * handler is registered with the OS, the netdev watchdog subtask is
3924  * enabled, and the stack is notified that the interface is ready.
3925  *
3926  * Returns 0 on success, negative value on failure
3927  **/
3928 static int i40e_open(struct net_device *netdev)
3929 {
3930         struct i40e_netdev_priv *np = netdev_priv(netdev);
3931         struct i40e_vsi *vsi = np->vsi;
3932         struct i40e_pf *pf = vsi->back;
3933         char int_name[IFNAMSIZ];
3934         int err;
3935
3936         /* disallow open during test */
3937         if (test_bit(__I40E_TESTING, &pf->state))
3938                 return -EBUSY;
3939
3940         netif_carrier_off(netdev);
3941
3942         /* allocate descriptors */
3943         err = i40e_vsi_setup_tx_resources(vsi);
3944         if (err)
3945                 goto err_setup_tx;
3946         err = i40e_vsi_setup_rx_resources(vsi);
3947         if (err)
3948                 goto err_setup_rx;
3949
3950         err = i40e_vsi_configure(vsi);
3951         if (err)
3952                 goto err_setup_rx;
3953
3954         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
3955                  dev_driver_string(&pf->pdev->dev), netdev->name);
3956         err = i40e_vsi_request_irq(vsi, int_name);
3957         if (err)
3958                 goto err_setup_rx;
3959
3960         err = i40e_up_complete(vsi);
3961         if (err)
3962                 goto err_up_complete;
3963
3964         if ((vsi->type == I40E_VSI_MAIN) || (vsi->type == I40E_VSI_VMDQ2)) {
3965                 err = i40e_aq_set_vsi_broadcast(&pf->hw, vsi->seid, true, NULL);
3966                 if (err)
3967                         netdev_info(netdev,
3968                                     "couldn't set broadcast err %d aq_err %d\n",
3969                                     err, pf->hw.aq.asq_last_status);
3970         }
3971
3972         return 0;
3973
3974 err_up_complete:
3975         i40e_down(vsi);
3976         i40e_vsi_free_irq(vsi);
3977 err_setup_rx:
3978         i40e_vsi_free_rx_resources(vsi);
3979 err_setup_tx:
3980         i40e_vsi_free_tx_resources(vsi);
3981         if (vsi == pf->vsi[pf->lan_vsi])
3982                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
3983
3984         return err;
3985 }
3986
3987 /**
3988  * i40e_close - Disables a network interface
3989  * @netdev: network interface device structure
3990  *
3991  * The close entry point is called when an interface is de-activated
3992  * by the OS.  The hardware is still under the driver's control, but
3993  * this netdev interface is disabled.
3994  *
3995  * Returns 0, this is not allowed to fail
3996  **/
3997 static int i40e_close(struct net_device *netdev)
3998 {
3999         struct i40e_netdev_priv *np = netdev_priv(netdev);
4000         struct i40e_vsi *vsi = np->vsi;
4001
4002         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4003                 return 0;
4004
4005         i40e_down(vsi);
4006         i40e_vsi_free_irq(vsi);
4007
4008         i40e_vsi_free_tx_resources(vsi);
4009         i40e_vsi_free_rx_resources(vsi);
4010
4011         return 0;
4012 }
4013
4014 /**
4015  * i40e_do_reset - Start a PF or Core Reset sequence
4016  * @pf: board private structure
4017  * @reset_flags: which reset is requested
4018  *
4019  * The essential difference in resets is that the PF Reset
4020  * doesn't clear the packet buffers, doesn't reset the PE
4021  * firmware, and doesn't bother the other PFs on the chip.
4022  **/
4023 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4024 {
4025         u32 val;
4026
4027         WARN_ON(in_interrupt());
4028
4029         /* do the biggest reset indicated */
4030         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4031
4032                 /* Request a Global Reset
4033                  *
4034                  * This will start the chip's countdown to the actual full
4035                  * chip reset event, and a warning interrupt to be sent
4036                  * to all PFs, including the requestor.  Our handler
4037                  * for the warning interrupt will deal with the shutdown
4038                  * and recovery of the switch setup.
4039                  */
4040                 dev_info(&pf->pdev->dev, "GlobalR requested\n");
4041                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4042                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4043                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4044
4045         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4046
4047                 /* Request a Core Reset
4048                  *
4049                  * Same as Global Reset, except does *not* include the MAC/PHY
4050                  */
4051                 dev_info(&pf->pdev->dev, "CoreR requested\n");
4052                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4053                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4054                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4055                 i40e_flush(&pf->hw);
4056
4057         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4058
4059                 /* Request a PF Reset
4060                  *
4061                  * Resets only the PF-specific registers
4062                  *
4063                  * This goes directly to the tear-down and rebuild of
4064                  * the switch, since we need to do all the recovery as
4065                  * for the Core Reset.
4066                  */
4067                 dev_info(&pf->pdev->dev, "PFR requested\n");
4068                 i40e_handle_reset_warning(pf);
4069
4070         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4071                 int v;
4072
4073                 /* Find the VSI(s) that requested a re-init */
4074                 dev_info(&pf->pdev->dev,
4075                          "VSI reinit requested\n");
4076                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4077                         struct i40e_vsi *vsi = pf->vsi[v];
4078                         if (vsi != NULL &&
4079                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4080                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4081                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4082                         }
4083                 }
4084
4085                 /* no further action needed, so return now */
4086                 return;
4087         } else {
4088                 dev_info(&pf->pdev->dev,
4089                          "bad reset request 0x%08x\n", reset_flags);
4090                 return;
4091         }
4092 }
4093
4094 /**
4095  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4096  * @pf: board private structure
4097  * @e: event info posted on ARQ
4098  *
4099  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4100  * and VF queues
4101  **/
4102 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4103                                            struct i40e_arq_event_info *e)
4104 {
4105         struct i40e_aqc_lan_overflow *data =
4106                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4107         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4108         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4109         struct i40e_hw *hw = &pf->hw;
4110         struct i40e_vf *vf;
4111         u16 vf_id;
4112
4113         dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n",
4114                  __func__, queue, qtx_ctl);
4115
4116         /* Queue belongs to VF, find the VF and issue VF reset */
4117         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4118             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4119                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4120                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4121                 vf_id -= hw->func_caps.vf_base_id;
4122                 vf = &pf->vf[vf_id];
4123                 i40e_vc_notify_vf_reset(vf);
4124                 /* Allow VF to process pending reset notification */
4125                 msleep(20);
4126                 i40e_reset_vf(vf, false);
4127         }
4128 }
4129
4130 /**
4131  * i40e_service_event_complete - Finish up the service event
4132  * @pf: board private structure
4133  **/
4134 static void i40e_service_event_complete(struct i40e_pf *pf)
4135 {
4136         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4137
4138         /* flush memory to make sure state is correct before next watchog */
4139         smp_mb__before_clear_bit();
4140         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4141 }
4142
4143 /**
4144  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4145  * @pf: board private structure
4146  **/
4147 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4148 {
4149         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4150                 return;
4151
4152         pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4153
4154         /* if interface is down do nothing */
4155         if (test_bit(__I40E_DOWN, &pf->state))
4156                 return;
4157 }
4158
4159 /**
4160  * i40e_vsi_link_event - notify VSI of a link event
4161  * @vsi: vsi to be notified
4162  * @link_up: link up or down
4163  **/
4164 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4165 {
4166         if (!vsi)
4167                 return;
4168
4169         switch (vsi->type) {
4170         case I40E_VSI_MAIN:
4171                 if (!vsi->netdev || !vsi->netdev_registered)
4172                         break;
4173
4174                 if (link_up) {
4175                         netif_carrier_on(vsi->netdev);
4176                         netif_tx_wake_all_queues(vsi->netdev);
4177                 } else {
4178                         netif_carrier_off(vsi->netdev);
4179                         netif_tx_stop_all_queues(vsi->netdev);
4180                 }
4181                 break;
4182
4183         case I40E_VSI_SRIOV:
4184                 break;
4185
4186         case I40E_VSI_VMDQ2:
4187         case I40E_VSI_CTRL:
4188         case I40E_VSI_MIRROR:
4189         default:
4190                 /* there is no notification for other VSIs */
4191                 break;
4192         }
4193 }
4194
4195 /**
4196  * i40e_veb_link_event - notify elements on the veb of a link event
4197  * @veb: veb to be notified
4198  * @link_up: link up or down
4199  **/
4200 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4201 {
4202         struct i40e_pf *pf;
4203         int i;
4204
4205         if (!veb || !veb->pf)
4206                 return;
4207         pf = veb->pf;
4208
4209         /* depth first... */
4210         for (i = 0; i < I40E_MAX_VEB; i++)
4211                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4212                         i40e_veb_link_event(pf->veb[i], link_up);
4213
4214         /* ... now the local VSIs */
4215         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4216                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4217                         i40e_vsi_link_event(pf->vsi[i], link_up);
4218 }
4219
4220 /**
4221  * i40e_link_event - Update netif_carrier status
4222  * @pf: board private structure
4223  **/
4224 static void i40e_link_event(struct i40e_pf *pf)
4225 {
4226         bool new_link, old_link;
4227
4228         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4229         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4230
4231         if (new_link == old_link)
4232                 return;
4233
4234         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4235                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4236                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4237
4238         /* Notify the base of the switch tree connected to
4239          * the link.  Floating VEBs are not notified.
4240          */
4241         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4242                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4243         else
4244                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4245
4246         if (pf->vf)
4247                 i40e_vc_notify_link_state(pf);
4248 }
4249
4250 /**
4251  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4252  * @pf: board private structure
4253  *
4254  * Set the per-queue flags to request a check for stuck queues in the irq
4255  * clean functions, then force interrupts to be sure the irq clean is called.
4256  **/
4257 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4258 {
4259         int i, v;
4260
4261         /* If we're down or resetting, just bail */
4262         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4263                 return;
4264
4265         /* for each VSI/netdev
4266          *     for each Tx queue
4267          *         set the check flag
4268          *     for each q_vector
4269          *         force an interrupt
4270          */
4271         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4272                 struct i40e_vsi *vsi = pf->vsi[v];
4273                 int armed = 0;
4274
4275                 if (!pf->vsi[v] ||
4276                     test_bit(__I40E_DOWN, &vsi->state) ||
4277                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4278                         continue;
4279
4280                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4281                         set_check_for_tx_hang(vsi->tx_rings[i]);
4282                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4283                                      &vsi->tx_rings[i]->state))
4284                                 armed++;
4285                 }
4286
4287                 if (armed) {
4288                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4289                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4290                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4291                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4292                         } else {
4293                                 u16 vec = vsi->base_vector - 1;
4294                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4295                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4296                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4297                                         wr32(&vsi->back->hw,
4298                                              I40E_PFINT_DYN_CTLN(vec), val);
4299                         }
4300                         i40e_flush(&vsi->back->hw);
4301                 }
4302         }
4303 }
4304
4305 /**
4306  * i40e_watchdog_subtask - Check and bring link up
4307  * @pf: board private structure
4308  **/
4309 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4310 {
4311         int i;
4312
4313         /* if interface is down do nothing */
4314         if (test_bit(__I40E_DOWN, &pf->state) ||
4315             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4316                 return;
4317
4318         /* Update the stats for active netdevs so the network stack
4319          * can look at updated numbers whenever it cares to
4320          */
4321         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4322                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4323                         i40e_update_stats(pf->vsi[i]);
4324
4325         /* Update the stats for the active switching components */
4326         for (i = 0; i < I40E_MAX_VEB; i++)
4327                 if (pf->veb[i])
4328                         i40e_update_veb_stats(pf->veb[i]);
4329 }
4330
4331 /**
4332  * i40e_reset_subtask - Set up for resetting the device and driver
4333  * @pf: board private structure
4334  **/
4335 static void i40e_reset_subtask(struct i40e_pf *pf)
4336 {
4337         u32 reset_flags = 0;
4338
4339         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4340                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4341                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4342         }
4343         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4344                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4345                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4346         }
4347         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4348                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4349                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4350         }
4351         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4352                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4353                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4354         }
4355
4356         /* If there's a recovery already waiting, it takes
4357          * precedence before starting a new reset sequence.
4358          */
4359         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4360                 i40e_handle_reset_warning(pf);
4361                 return;
4362         }
4363
4364         /* If we're already down or resetting, just bail */
4365         if (reset_flags &&
4366             !test_bit(__I40E_DOWN, &pf->state) &&
4367             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4368                 i40e_do_reset(pf, reset_flags);
4369 }
4370
4371 /**
4372  * i40e_handle_link_event - Handle link event
4373  * @pf: board private structure
4374  * @e: event info posted on ARQ
4375  **/
4376 static void i40e_handle_link_event(struct i40e_pf *pf,
4377                                    struct i40e_arq_event_info *e)
4378 {
4379         struct i40e_hw *hw = &pf->hw;
4380         struct i40e_aqc_get_link_status *status =
4381                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4382         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4383
4384         /* save off old link status information */
4385         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4386                sizeof(pf->hw.phy.link_info_old));
4387
4388         /* update link status */
4389         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4390         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4391         hw_link_info->link_info = status->link_info;
4392         hw_link_info->an_info = status->an_info;
4393         hw_link_info->ext_info = status->ext_info;
4394         hw_link_info->lse_enable =
4395                 le16_to_cpu(status->command_flags) &
4396                             I40E_AQ_LSE_ENABLE;
4397
4398         /* process the event */
4399         i40e_link_event(pf);
4400
4401         /* Do a new status request to re-enable LSE reporting
4402          * and load new status information into the hw struct,
4403          * then see if the status changed while processing the
4404          * initial event.
4405          */
4406         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
4407         i40e_link_event(pf);
4408 }
4409
4410 /**
4411  * i40e_clean_adminq_subtask - Clean the AdminQ rings
4412  * @pf: board private structure
4413  **/
4414 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
4415 {
4416         struct i40e_arq_event_info event;
4417         struct i40e_hw *hw = &pf->hw;
4418         u16 pending, i = 0;
4419         i40e_status ret;
4420         u16 opcode;
4421         u32 val;
4422
4423         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
4424                 return;
4425
4426         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
4427         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
4428         if (!event.msg_buf)
4429                 return;
4430
4431         do {
4432                 ret = i40e_clean_arq_element(hw, &event, &pending);
4433                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
4434                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
4435                         break;
4436                 } else if (ret) {
4437                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
4438                         break;
4439                 }
4440
4441                 opcode = le16_to_cpu(event.desc.opcode);
4442                 switch (opcode) {
4443
4444                 case i40e_aqc_opc_get_link_status:
4445                         i40e_handle_link_event(pf, &event);
4446                         break;
4447                 case i40e_aqc_opc_send_msg_to_pf:
4448                         ret = i40e_vc_process_vf_msg(pf,
4449                                         le16_to_cpu(event.desc.retval),
4450                                         le32_to_cpu(event.desc.cookie_high),
4451                                         le32_to_cpu(event.desc.cookie_low),
4452                                         event.msg_buf,
4453                                         event.msg_size);
4454                         break;
4455                 case i40e_aqc_opc_lldp_update_mib:
4456                         dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
4457                         break;
4458                 case i40e_aqc_opc_event_lan_overflow:
4459                         dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
4460                         i40e_handle_lan_overflow_event(pf, &event);
4461                         break;
4462                 default:
4463                         dev_info(&pf->pdev->dev,
4464                                  "ARQ Error: Unknown event %d received\n",
4465                                  event.desc.opcode);
4466                         break;
4467                 }
4468         } while (pending && (i++ < pf->adminq_work_limit));
4469
4470         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
4471         /* re-enable Admin queue interrupt cause */
4472         val = rd32(hw, I40E_PFINT_ICR0_ENA);
4473         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4474         wr32(hw, I40E_PFINT_ICR0_ENA, val);
4475         i40e_flush(hw);
4476
4477         kfree(event.msg_buf);
4478 }
4479
4480 /**
4481  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
4482  * @veb: pointer to the VEB instance
4483  *
4484  * This is a recursive function that first builds the attached VSIs then
4485  * recurses in to build the next layer of VEB.  We track the connections
4486  * through our own index numbers because the seid's from the HW could
4487  * change across the reset.
4488  **/
4489 static int i40e_reconstitute_veb(struct i40e_veb *veb)
4490 {
4491         struct i40e_vsi *ctl_vsi = NULL;
4492         struct i40e_pf *pf = veb->pf;
4493         int v, veb_idx;
4494         int ret;
4495
4496         /* build VSI that owns this VEB, temporarily attached to base VEB */
4497         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
4498                 if (pf->vsi[v] &&
4499                     pf->vsi[v]->veb_idx == veb->idx &&
4500                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
4501                         ctl_vsi = pf->vsi[v];
4502                         break;
4503                 }
4504         }
4505         if (!ctl_vsi) {
4506                 dev_info(&pf->pdev->dev,
4507                          "missing owner VSI for veb_idx %d\n", veb->idx);
4508                 ret = -ENOENT;
4509                 goto end_reconstitute;
4510         }
4511         if (ctl_vsi != pf->vsi[pf->lan_vsi])
4512                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
4513         ret = i40e_add_vsi(ctl_vsi);
4514         if (ret) {
4515                 dev_info(&pf->pdev->dev,
4516                          "rebuild of owner VSI failed: %d\n", ret);
4517                 goto end_reconstitute;
4518         }
4519         i40e_vsi_reset_stats(ctl_vsi);
4520
4521         /* create the VEB in the switch and move the VSI onto the VEB */
4522         ret = i40e_add_veb(veb, ctl_vsi);
4523         if (ret)
4524                 goto end_reconstitute;
4525
4526         /* create the remaining VSIs attached to this VEB */
4527         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4528                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
4529                         continue;
4530
4531                 if (pf->vsi[v]->veb_idx == veb->idx) {
4532                         struct i40e_vsi *vsi = pf->vsi[v];
4533                         vsi->uplink_seid = veb->seid;
4534                         ret = i40e_add_vsi(vsi);
4535                         if (ret) {
4536                                 dev_info(&pf->pdev->dev,
4537                                          "rebuild of vsi_idx %d failed: %d\n",
4538                                          v, ret);
4539                                 goto end_reconstitute;
4540                         }
4541                         i40e_vsi_reset_stats(vsi);
4542                 }
4543         }
4544
4545         /* create any VEBs attached to this VEB - RECURSION */
4546         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
4547                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
4548                         pf->veb[veb_idx]->uplink_seid = veb->seid;
4549                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
4550                         if (ret)
4551                                 break;
4552                 }
4553         }
4554
4555 end_reconstitute:
4556         return ret;
4557 }
4558
4559 /**
4560  * i40e_get_capabilities - get info about the HW
4561  * @pf: the PF struct
4562  **/
4563 static int i40e_get_capabilities(struct i40e_pf *pf)
4564 {
4565         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
4566         u16 data_size;
4567         int buf_len;
4568         int err;
4569
4570         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
4571         do {
4572                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
4573                 if (!cap_buf)
4574                         return -ENOMEM;
4575
4576                 /* this loads the data into the hw struct for us */
4577                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
4578                                             &data_size,
4579                                             i40e_aqc_opc_list_func_capabilities,
4580                                             NULL);
4581                 /* data loaded, buffer no longer needed */
4582                 kfree(cap_buf);
4583
4584                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
4585                         /* retry with a larger buffer */
4586                         buf_len = data_size;
4587                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
4588                         dev_info(&pf->pdev->dev,
4589                                  "capability discovery failed: aq=%d\n",
4590                                  pf->hw.aq.asq_last_status);
4591                         return -ENODEV;
4592                 }
4593         } while (err);
4594
4595         if (pf->hw.debug_mask & I40E_DEBUG_USER)
4596                 dev_info(&pf->pdev->dev,
4597                          "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",
4598                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
4599                          pf->hw.func_caps.num_msix_vectors,
4600                          pf->hw.func_caps.num_msix_vectors_vf,
4601                          pf->hw.func_caps.fd_filters_guaranteed,
4602                          pf->hw.func_caps.fd_filters_best_effort,
4603                          pf->hw.func_caps.num_tx_qp,
4604                          pf->hw.func_caps.num_vsis);
4605
4606         return 0;
4607 }
4608
4609 /**
4610  * i40e_fdir_setup - initialize the Flow Director resources
4611  * @pf: board private structure
4612  **/
4613 static void i40e_fdir_setup(struct i40e_pf *pf)
4614 {
4615         struct i40e_vsi *vsi;
4616         bool new_vsi = false;
4617         int err, i;
4618
4619         if (!(pf->flags & (I40E_FLAG_FDIR_ENABLED |
4620                            I40E_FLAG_FDIR_ATR_ENABLED)))
4621                 return;
4622
4623         pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
4624
4625         /* find existing or make new FDIR VSI */
4626         vsi = NULL;
4627         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4628                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR)
4629                         vsi = pf->vsi[i];
4630         if (!vsi) {
4631                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR, pf->mac_seid, 0);
4632                 if (!vsi) {
4633                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
4634                         pf->flags &= ~I40E_FLAG_FDIR_ENABLED;
4635                         return;
4636                 }
4637                 new_vsi = true;
4638         }
4639         WARN_ON(vsi->base_queue != I40E_FDIR_RING);
4640         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_rings);
4641
4642         err = i40e_vsi_setup_tx_resources(vsi);
4643         if (!err)
4644                 err = i40e_vsi_setup_rx_resources(vsi);
4645         if (!err)
4646                 err = i40e_vsi_configure(vsi);
4647         if (!err && new_vsi) {
4648                 char int_name[IFNAMSIZ + 9];
4649                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4650                          dev_driver_string(&pf->pdev->dev));
4651                 err = i40e_vsi_request_irq(vsi, int_name);
4652         }
4653         if (!err)
4654                 err = i40e_up_complete(vsi);
4655
4656         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4657 }
4658
4659 /**
4660  * i40e_fdir_teardown - release the Flow Director resources
4661  * @pf: board private structure
4662  **/
4663 static void i40e_fdir_teardown(struct i40e_pf *pf)
4664 {
4665         int i;
4666
4667         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
4668                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
4669                         i40e_vsi_release(pf->vsi[i]);
4670                         break;
4671                 }
4672         }
4673 }
4674
4675 /**
4676  * i40e_handle_reset_warning - prep for the core to reset
4677  * @pf: board private structure
4678  *
4679  * Close up the VFs and other things in prep for a Core Reset,
4680  * then get ready to rebuild the world.
4681  **/
4682 static void i40e_handle_reset_warning(struct i40e_pf *pf)
4683 {
4684         struct i40e_driver_version dv;
4685         struct i40e_hw *hw = &pf->hw;
4686         i40e_status ret;
4687         u32 v;
4688
4689         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
4690         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
4691                 return;
4692
4693         dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n");
4694
4695         i40e_vc_notify_reset(pf);
4696
4697         /* quiesce the VSIs and their queues that are not already DOWN */
4698         i40e_pf_quiesce_all_vsi(pf);
4699
4700         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4701                 if (pf->vsi[v])
4702                         pf->vsi[v]->seid = 0;
4703         }
4704
4705         i40e_shutdown_adminq(&pf->hw);
4706
4707         /* Now we wait for GRST to settle out.
4708          * We don't have to delete the VEBs or VSIs from the hw switch
4709          * because the reset will make them disappear.
4710          */
4711         ret = i40e_pf_reset(hw);
4712         if (ret)
4713                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
4714         pf->pfr_count++;
4715
4716         if (test_bit(__I40E_DOWN, &pf->state))
4717                 goto end_core_reset;
4718         dev_info(&pf->pdev->dev, "Rebuilding internal switch\n");
4719
4720         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
4721         ret = i40e_init_adminq(&pf->hw);
4722         if (ret) {
4723                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
4724                 goto end_core_reset;
4725         }
4726
4727         ret = i40e_get_capabilities(pf);
4728         if (ret) {
4729                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
4730                          ret);
4731                 goto end_core_reset;
4732         }
4733
4734         /* call shutdown HMC */
4735         ret = i40e_shutdown_lan_hmc(hw);
4736         if (ret) {
4737                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
4738                 goto end_core_reset;
4739         }
4740
4741         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
4742                                 hw->func_caps.num_rx_qp,
4743                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
4744         if (ret) {
4745                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
4746                 goto end_core_reset;
4747         }
4748         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
4749         if (ret) {
4750                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
4751                 goto end_core_reset;
4752         }
4753
4754         /* do basic switch setup */
4755         ret = i40e_setup_pf_switch(pf);
4756         if (ret)
4757                 goto end_core_reset;
4758
4759         /* Rebuild the VSIs and VEBs that existed before reset.
4760          * They are still in our local switch element arrays, so only
4761          * need to rebuild the switch model in the HW.
4762          *
4763          * If there were VEBs but the reconstitution failed, we'll try
4764          * try to recover minimal use by getting the basic PF VSI working.
4765          */
4766         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
4767                 dev_info(&pf->pdev->dev, "attempting to rebuild switch\n");
4768                 /* find the one VEB connected to the MAC, and find orphans */
4769                 for (v = 0; v < I40E_MAX_VEB; v++) {
4770                         if (!pf->veb[v])
4771                                 continue;
4772
4773                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
4774                             pf->veb[v]->uplink_seid == 0) {
4775                                 ret = i40e_reconstitute_veb(pf->veb[v]);
4776
4777                                 if (!ret)
4778                                         continue;
4779
4780                                 /* If Main VEB failed, we're in deep doodoo,
4781                                  * so give up rebuilding the switch and set up
4782                                  * for minimal rebuild of PF VSI.
4783                                  * If orphan failed, we'll report the error
4784                                  * but try to keep going.
4785                                  */
4786                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
4787                                         dev_info(&pf->pdev->dev,
4788                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
4789                                                  ret);
4790                                         pf->vsi[pf->lan_vsi]->uplink_seid
4791                                                                 = pf->mac_seid;
4792                                         break;
4793                                 } else if (pf->veb[v]->uplink_seid == 0) {
4794                                         dev_info(&pf->pdev->dev,
4795                                                  "rebuild of orphan VEB failed: %d\n",
4796                                                  ret);
4797                                 }
4798                         }
4799                 }
4800         }
4801
4802         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
4803                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
4804                 /* no VEB, so rebuild only the Main VSI */
4805                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
4806                 if (ret) {
4807                         dev_info(&pf->pdev->dev,
4808                                  "rebuild of Main VSI failed: %d\n", ret);
4809                         goto end_core_reset;
4810                 }
4811         }
4812
4813         /* reinit the misc interrupt */
4814         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4815                 ret = i40e_setup_misc_vector(pf);
4816
4817         /* restart the VSIs that were rebuilt and running before the reset */
4818         i40e_pf_unquiesce_all_vsi(pf);
4819
4820         /* tell the firmware that we're starting */
4821         dv.major_version = DRV_VERSION_MAJOR;
4822         dv.minor_version = DRV_VERSION_MINOR;
4823         dv.build_version = DRV_VERSION_BUILD;
4824         dv.subbuild_version = 0;
4825         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
4826
4827         dev_info(&pf->pdev->dev, "PF reset done\n");
4828
4829 end_core_reset:
4830         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
4831 }
4832
4833 /**
4834  * i40e_handle_mdd_event
4835  * @pf: pointer to the pf structure
4836  *
4837  * Called from the MDD irq handler to identify possibly malicious vfs
4838  **/
4839 static void i40e_handle_mdd_event(struct i40e_pf *pf)
4840 {
4841         struct i40e_hw *hw = &pf->hw;
4842         bool mdd_detected = false;
4843         struct i40e_vf *vf;
4844         u32 reg;
4845         int i;
4846
4847         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
4848                 return;
4849
4850         /* find what triggered the MDD event */
4851         reg = rd32(hw, I40E_GL_MDET_TX);
4852         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
4853                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
4854                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
4855                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
4856                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
4857                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
4858                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
4859                 dev_info(&pf->pdev->dev,
4860                          "Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n",
4861                          event, queue, func);
4862                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
4863                 mdd_detected = true;
4864         }
4865         reg = rd32(hw, I40E_GL_MDET_RX);
4866         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
4867                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
4868                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
4869                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
4870                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
4871                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
4872                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
4873                 dev_info(&pf->pdev->dev,
4874                          "Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n",
4875                          event, queue, func);
4876                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
4877                 mdd_detected = true;
4878         }
4879
4880         /* see if one of the VFs needs its hand slapped */
4881         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
4882                 vf = &(pf->vf[i]);
4883                 reg = rd32(hw, I40E_VP_MDET_TX(i));
4884                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
4885                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
4886                         vf->num_mdd_events++;
4887                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
4888                 }
4889
4890                 reg = rd32(hw, I40E_VP_MDET_RX(i));
4891                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
4892                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
4893                         vf->num_mdd_events++;
4894                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
4895                 }
4896
4897                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
4898                         dev_info(&pf->pdev->dev,
4899                                  "Too many MDD events on VF %d, disabled\n", i);
4900                         dev_info(&pf->pdev->dev,
4901                                  "Use PF Control I/F to re-enable the VF\n");
4902                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
4903                 }
4904         }
4905
4906         /* re-enable mdd interrupt cause */
4907         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
4908         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4909         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4910         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4911         i40e_flush(hw);
4912 }
4913
4914 /**
4915  * i40e_service_task - Run the driver's async subtasks
4916  * @work: pointer to work_struct containing our data
4917  **/
4918 static void i40e_service_task(struct work_struct *work)
4919 {
4920         struct i40e_pf *pf = container_of(work,
4921                                           struct i40e_pf,
4922                                           service_task);
4923         unsigned long start_time = jiffies;
4924
4925         i40e_reset_subtask(pf);
4926         i40e_handle_mdd_event(pf);
4927         i40e_vc_process_vflr_event(pf);
4928         i40e_watchdog_subtask(pf);
4929         i40e_fdir_reinit_subtask(pf);
4930         i40e_check_hang_subtask(pf);
4931         i40e_sync_filters_subtask(pf);
4932         i40e_clean_adminq_subtask(pf);
4933
4934         i40e_service_event_complete(pf);
4935
4936         /* If the tasks have taken longer than one timer cycle or there
4937          * is more work to be done, reschedule the service task now
4938          * rather than wait for the timer to tick again.
4939          */
4940         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
4941             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
4942             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
4943             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
4944                 i40e_service_event_schedule(pf);
4945 }
4946
4947 /**
4948  * i40e_service_timer - timer callback
4949  * @data: pointer to PF struct
4950  **/
4951 static void i40e_service_timer(unsigned long data)
4952 {
4953         struct i40e_pf *pf = (struct i40e_pf *)data;
4954
4955         mod_timer(&pf->service_timer,
4956                   round_jiffies(jiffies + pf->service_timer_period));
4957         i40e_service_event_schedule(pf);
4958 }
4959
4960 /**
4961  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
4962  * @vsi: the VSI being configured
4963  **/
4964 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
4965 {
4966         struct i40e_pf *pf = vsi->back;
4967
4968         switch (vsi->type) {
4969         case I40E_VSI_MAIN:
4970                 vsi->alloc_queue_pairs = pf->num_lan_qps;
4971                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4972                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4973                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4974                         vsi->num_q_vectors = pf->num_lan_msix;
4975                 else
4976                         vsi->num_q_vectors = 1;
4977
4978                 break;
4979
4980         case I40E_VSI_FDIR:
4981                 vsi->alloc_queue_pairs = 1;
4982                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
4983                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4984                 vsi->num_q_vectors = 1;
4985                 break;
4986
4987         case I40E_VSI_VMDQ2:
4988                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
4989                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4990                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4991                 vsi->num_q_vectors = pf->num_vmdq_msix;
4992                 break;
4993
4994         case I40E_VSI_SRIOV:
4995                 vsi->alloc_queue_pairs = pf->num_vf_qps;
4996                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4997                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4998                 break;
4999
5000         default:
5001                 WARN_ON(1);
5002                 return -ENODATA;
5003         }
5004
5005         return 0;
5006 }
5007
5008 /**
5009  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5010  * @pf: board private structure
5011  * @type: type of VSI
5012  *
5013  * On error: returns error code (negative)
5014  * On success: returns vsi index in PF (positive)
5015  **/
5016 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5017 {
5018         int ret = -ENODEV;
5019         struct i40e_vsi *vsi;
5020         int sz_vectors;
5021         int sz_rings;
5022         int vsi_idx;
5023         int i;
5024
5025         /* Need to protect the allocation of the VSIs at the PF level */
5026         mutex_lock(&pf->switch_mutex);
5027
5028         /* VSI list may be fragmented if VSI creation/destruction has
5029          * been happening.  We can afford to do a quick scan to look
5030          * for any free VSIs in the list.
5031          *
5032          * find next empty vsi slot, looping back around if necessary
5033          */
5034         i = pf->next_vsi;
5035         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5036                 i++;
5037         if (i >= pf->hw.func_caps.num_vsis) {
5038                 i = 0;
5039                 while (i < pf->next_vsi && pf->vsi[i])
5040                         i++;
5041         }
5042
5043         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5044                 vsi_idx = i;             /* Found one! */
5045         } else {
5046                 ret = -ENODEV;
5047                 goto unlock_pf;  /* out of VSI slots! */
5048         }
5049         pf->next_vsi = ++i;
5050
5051         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5052         if (!vsi) {
5053                 ret = -ENOMEM;
5054                 goto unlock_pf;
5055         }
5056         vsi->type = type;
5057         vsi->back = pf;
5058         set_bit(__I40E_DOWN, &vsi->state);
5059         vsi->flags = 0;
5060         vsi->idx = vsi_idx;
5061         vsi->rx_itr_setting = pf->rx_itr_default;
5062         vsi->tx_itr_setting = pf->tx_itr_default;
5063         vsi->netdev_registered = false;
5064         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5065         INIT_LIST_HEAD(&vsi->mac_filter_list);
5066
5067         ret = i40e_set_num_rings_in_vsi(vsi);
5068         if (ret)
5069                 goto err_rings;
5070
5071         /* allocate memory for ring pointers */
5072         sz_rings = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5073         vsi->tx_rings = kzalloc(sz_rings, GFP_KERNEL);
5074         if (!vsi->tx_rings) {
5075                 ret = -ENOMEM;
5076                 goto err_rings;
5077         }
5078         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5079
5080         /* allocate memory for q_vector pointers */
5081         sz_vectors = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5082         vsi->q_vectors = kzalloc(sz_vectors, GFP_KERNEL);
5083         if (!vsi->q_vectors) {
5084                 ret = -ENOMEM;
5085                 goto err_vectors;
5086         }
5087
5088         /* Setup default MSIX irq handler for VSI */
5089         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5090
5091         pf->vsi[vsi_idx] = vsi;
5092         ret = vsi_idx;
5093         goto unlock_pf;
5094
5095 err_vectors:
5096         kfree(vsi->tx_rings);
5097 err_rings:
5098         pf->next_vsi = i - 1;
5099         kfree(vsi);
5100 unlock_pf:
5101         mutex_unlock(&pf->switch_mutex);
5102         return ret;
5103 }
5104
5105 /**
5106  * i40e_vsi_clear - Deallocate the VSI provided
5107  * @vsi: the VSI being un-configured
5108  **/
5109 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5110 {
5111         struct i40e_pf *pf;
5112
5113         if (!vsi)
5114                 return 0;
5115
5116         if (!vsi->back)
5117                 goto free_vsi;
5118         pf = vsi->back;
5119
5120         mutex_lock(&pf->switch_mutex);
5121         if (!pf->vsi[vsi->idx]) {
5122                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5123                         vsi->idx, vsi->idx, vsi, vsi->type);
5124                 goto unlock_vsi;
5125         }
5126
5127         if (pf->vsi[vsi->idx] != vsi) {
5128                 dev_err(&pf->pdev->dev,
5129                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5130                         pf->vsi[vsi->idx]->idx,
5131                         pf->vsi[vsi->idx],
5132                         pf->vsi[vsi->idx]->type,
5133                         vsi->idx, vsi, vsi->type);
5134                 goto unlock_vsi;
5135         }
5136
5137         /* updates the pf for this cleared vsi */
5138         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5139         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5140
5141         /* free the ring and vector containers */
5142         kfree(vsi->q_vectors);
5143         kfree(vsi->tx_rings);
5144
5145         pf->vsi[vsi->idx] = NULL;
5146         if (vsi->idx < pf->next_vsi)
5147                 pf->next_vsi = vsi->idx;
5148
5149 unlock_vsi:
5150         mutex_unlock(&pf->switch_mutex);
5151 free_vsi:
5152         kfree(vsi);
5153
5154         return 0;
5155 }
5156
5157 /**
5158  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5159  * @vsi: the VSI being cleaned
5160  **/
5161 static s32 i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5162 {
5163         int i;
5164
5165         if (vsi->tx_rings[0])
5166                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5167                         kfree_rcu(vsi->tx_rings[i], rcu);
5168                         vsi->tx_rings[i] = NULL;
5169                         vsi->rx_rings[i] = NULL;
5170                 }
5171
5172         return 0;
5173 }
5174
5175 /**
5176  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5177  * @vsi: the VSI being configured
5178  **/
5179 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5180 {
5181         struct i40e_pf *pf = vsi->back;
5182         int i;
5183
5184         /* Set basic values in the rings to be used later during open() */
5185         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5186                 struct i40e_ring *tx_ring;
5187                 struct i40e_ring *rx_ring;
5188
5189                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5190                 if (!tx_ring)
5191                         goto err_out;
5192
5193                 tx_ring->queue_index = i;
5194                 tx_ring->reg_idx = vsi->base_queue + i;
5195                 tx_ring->ring_active = false;
5196                 tx_ring->vsi = vsi;
5197                 tx_ring->netdev = vsi->netdev;
5198                 tx_ring->dev = &pf->pdev->dev;
5199                 tx_ring->count = vsi->num_desc;
5200                 tx_ring->size = 0;
5201                 tx_ring->dcb_tc = 0;
5202                 vsi->tx_rings[i] = tx_ring;
5203
5204                 rx_ring = &tx_ring[1];
5205                 rx_ring->queue_index = i;
5206                 rx_ring->reg_idx = vsi->base_queue + i;
5207                 rx_ring->ring_active = false;
5208                 rx_ring->vsi = vsi;
5209                 rx_ring->netdev = vsi->netdev;
5210                 rx_ring->dev = &pf->pdev->dev;
5211                 rx_ring->count = vsi->num_desc;
5212                 rx_ring->size = 0;
5213                 rx_ring->dcb_tc = 0;
5214                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
5215                         set_ring_16byte_desc_enabled(rx_ring);
5216                 else
5217                         clear_ring_16byte_desc_enabled(rx_ring);
5218                 vsi->rx_rings[i] = rx_ring;
5219         }
5220
5221         return 0;
5222
5223 err_out:
5224         i40e_vsi_clear_rings(vsi);
5225         return -ENOMEM;
5226 }
5227
5228 /**
5229  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
5230  * @pf: board private structure
5231  * @vectors: the number of MSI-X vectors to request
5232  *
5233  * Returns the number of vectors reserved, or error
5234  **/
5235 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
5236 {
5237         int err = 0;
5238
5239         pf->num_msix_entries = 0;
5240         while (vectors >= I40E_MIN_MSIX) {
5241                 err = pci_enable_msix(pf->pdev, pf->msix_entries, vectors);
5242                 if (err == 0) {
5243                         /* good to go */
5244                         pf->num_msix_entries = vectors;
5245                         break;
5246                 } else if (err < 0) {
5247                         /* total failure */
5248                         dev_info(&pf->pdev->dev,
5249                                  "MSI-X vector reservation failed: %d\n", err);
5250                         vectors = 0;
5251                         break;
5252                 } else {
5253                         /* err > 0 is the hint for retry */
5254                         dev_info(&pf->pdev->dev,
5255                                  "MSI-X vectors wanted %d, retrying with %d\n",
5256                                  vectors, err);
5257                         vectors = err;
5258                 }
5259         }
5260
5261         if (vectors > 0 && vectors < I40E_MIN_MSIX) {
5262                 dev_info(&pf->pdev->dev,
5263                          "Couldn't get enough vectors, only %d available\n",
5264                          vectors);
5265                 vectors = 0;
5266         }
5267
5268         return vectors;
5269 }
5270
5271 /**
5272  * i40e_init_msix - Setup the MSIX capability
5273  * @pf: board private structure
5274  *
5275  * Work with the OS to set up the MSIX vectors needed.
5276  *
5277  * Returns 0 on success, negative on failure
5278  **/
5279 static int i40e_init_msix(struct i40e_pf *pf)
5280 {
5281         i40e_status err = 0;
5282         struct i40e_hw *hw = &pf->hw;
5283         int v_budget, i;
5284         int vec;
5285
5286         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
5287                 return -ENODEV;
5288
5289         /* The number of vectors we'll request will be comprised of:
5290          *   - Add 1 for "other" cause for Admin Queue events, etc.
5291          *   - The number of LAN queue pairs
5292          *        already adjusted for the NUMA node
5293          *        assumes symmetric Tx/Rx pairing
5294          *   - The number of VMDq pairs
5295          * Once we count this up, try the request.
5296          *
5297          * If we can't get what we want, we'll simplify to nearly nothing
5298          * and try again.  If that still fails, we punt.
5299          */
5300         pf->num_lan_msix = pf->num_lan_qps;
5301         pf->num_vmdq_msix = pf->num_vmdq_qps;
5302         v_budget = 1 + pf->num_lan_msix;
5303         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
5304         if (pf->flags & I40E_FLAG_FDIR_ENABLED)
5305                 v_budget++;
5306
5307         /* Scale down if necessary, and the rings will share vectors */
5308         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
5309
5310         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
5311                                    GFP_KERNEL);
5312         if (!pf->msix_entries)
5313                 return -ENOMEM;
5314
5315         for (i = 0; i < v_budget; i++)
5316                 pf->msix_entries[i].entry = i;
5317         vec = i40e_reserve_msix_vectors(pf, v_budget);
5318         if (vec < I40E_MIN_MSIX) {
5319                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
5320                 kfree(pf->msix_entries);
5321                 pf->msix_entries = NULL;
5322                 return -ENODEV;
5323
5324         } else if (vec == I40E_MIN_MSIX) {
5325                 /* Adjust for minimal MSIX use */
5326                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSIX vectors\n");
5327                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
5328                 pf->num_vmdq_vsis = 0;
5329                 pf->num_vmdq_qps = 0;
5330                 pf->num_vmdq_msix = 0;
5331                 pf->num_lan_qps = 1;
5332                 pf->num_lan_msix = 1;
5333
5334         } else if (vec != v_budget) {
5335                 /* Scale vector usage down */
5336                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
5337                 vec--;                    /* reserve the misc vector */
5338
5339                 /* partition out the remaining vectors */
5340                 switch (vec) {
5341                 case 2:
5342                         pf->num_vmdq_vsis = 1;
5343                         pf->num_lan_msix = 1;
5344                         break;
5345                 case 3:
5346                         pf->num_vmdq_vsis = 1;
5347                         pf->num_lan_msix = 2;
5348                         break;
5349                 default:
5350                         pf->num_lan_msix = min_t(int, (vec / 2),
5351                                                  pf->num_lan_qps);
5352                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
5353                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
5354                         break;
5355                 }
5356         }
5357
5358         return err;
5359 }
5360
5361 /**
5362  * i40e_alloc_q_vector - Allocate memory for a single interrupt vector
5363  * @vsi: the VSI being configured
5364  * @v_idx: index of the vector in the vsi struct
5365  *
5366  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
5367  **/
5368 static int i40e_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
5369 {
5370         struct i40e_q_vector *q_vector;
5371
5372         /* allocate q_vector */
5373         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
5374         if (!q_vector)
5375                 return -ENOMEM;
5376
5377         q_vector->vsi = vsi;
5378         q_vector->v_idx = v_idx;
5379         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
5380         if (vsi->netdev)
5381                 netif_napi_add(vsi->netdev, &q_vector->napi,
5382                                i40e_napi_poll, vsi->work_limit);
5383
5384         q_vector->rx.latency_range = I40E_LOW_LATENCY;
5385         q_vector->tx.latency_range = I40E_LOW_LATENCY;
5386
5387         /* tie q_vector and vsi together */
5388         vsi->q_vectors[v_idx] = q_vector;
5389
5390         return 0;
5391 }
5392
5393 /**
5394  * i40e_alloc_q_vectors - Allocate memory for interrupt vectors
5395  * @vsi: the VSI being configured
5396  *
5397  * We allocate one q_vector per queue interrupt.  If allocation fails we
5398  * return -ENOMEM.
5399  **/
5400 static int i40e_alloc_q_vectors(struct i40e_vsi *vsi)
5401 {
5402         struct i40e_pf *pf = vsi->back;
5403         int v_idx, num_q_vectors;
5404         int err;
5405
5406         /* if not MSIX, give the one vector only to the LAN VSI */
5407         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5408                 num_q_vectors = vsi->num_q_vectors;
5409         else if (vsi == pf->vsi[pf->lan_vsi])
5410                 num_q_vectors = 1;
5411         else
5412                 return -EINVAL;
5413
5414         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
5415                 err = i40e_alloc_q_vector(vsi, v_idx);
5416                 if (err)
5417                         goto err_out;
5418         }
5419
5420         return 0;
5421
5422 err_out:
5423         while (v_idx--)
5424                 i40e_free_q_vector(vsi, v_idx);
5425
5426         return err;
5427 }
5428
5429 /**
5430  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
5431  * @pf: board private structure to initialize
5432  **/
5433 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
5434 {
5435         int err = 0;
5436
5437         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
5438                 err = i40e_init_msix(pf);
5439                 if (err) {
5440                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED      |
5441                                         I40E_FLAG_RSS_ENABLED      |
5442                                         I40E_FLAG_MQ_ENABLED       |
5443                                         I40E_FLAG_DCB_ENABLED      |
5444                                         I40E_FLAG_SRIOV_ENABLED    |
5445                                         I40E_FLAG_FDIR_ENABLED     |
5446                                         I40E_FLAG_FDIR_ATR_ENABLED |
5447                                         I40E_FLAG_VMDQ_ENABLED);
5448
5449                         /* rework the queue expectations without MSIX */
5450                         i40e_determine_queue_usage(pf);
5451                 }
5452         }
5453
5454         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
5455             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
5456                 dev_info(&pf->pdev->dev, "MSIX not available, trying MSI\n");
5457                 err = pci_enable_msi(pf->pdev);
5458                 if (err) {
5459                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
5460                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
5461                 }
5462         }
5463
5464         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
5465                 dev_info(&pf->pdev->dev, "MSIX and MSI not available, falling back to Legacy IRQ\n");
5466
5467         /* track first vector for misc interrupts */
5468         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
5469 }
5470
5471 /**
5472  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
5473  * @pf: board private structure
5474  *
5475  * This sets up the handler for MSIX 0, which is used to manage the
5476  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
5477  * when in MSI or Legacy interrupt mode.
5478  **/
5479 static int i40e_setup_misc_vector(struct i40e_pf *pf)
5480 {
5481         struct i40e_hw *hw = &pf->hw;
5482         int err = 0;
5483
5484         /* Only request the irq if this is the first time through, and
5485          * not when we're rebuilding after a Reset
5486          */
5487         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
5488                 err = request_irq(pf->msix_entries[0].vector,
5489                                   i40e_intr, 0, pf->misc_int_name, pf);
5490                 if (err) {
5491                         dev_info(&pf->pdev->dev,
5492                                  "request_irq for msix_misc failed: %d\n", err);
5493                         return -EFAULT;
5494                 }
5495         }
5496
5497         i40e_enable_misc_int_causes(hw);
5498
5499         /* associate no queues to the misc vector */
5500         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
5501         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
5502
5503         i40e_flush(hw);
5504
5505         i40e_irq_dynamic_enable_icr0(pf);
5506
5507         return err;
5508 }
5509
5510 /**
5511  * i40e_config_rss - Prepare for RSS if used
5512  * @pf: board private structure
5513  **/
5514 static int i40e_config_rss(struct i40e_pf *pf)
5515 {
5516         struct i40e_hw *hw = &pf->hw;
5517         u32 lut = 0;
5518         int i, j;
5519         u64 hena;
5520         /* Set of random keys generated using kernel random number generator */
5521         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
5522                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
5523                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
5524                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
5525
5526         /* Fill out hash function seed */
5527         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
5528                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
5529
5530         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
5531         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
5532                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
5533         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
5534                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
5535                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
5536                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP) |
5537                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP) |
5538                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
5539                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
5540                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
5541                 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4)|
5542                 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
5543         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
5544         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
5545
5546         /* Populate the LUT with max no. of queues in round robin fashion */
5547         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
5548
5549                 /* The assumption is that lan qp count will be the highest
5550                  * qp count for any PF VSI that needs RSS.
5551                  * If multiple VSIs need RSS support, all the qp counts
5552                  * for those VSIs should be a power of 2 for RSS to work.
5553                  * If LAN VSI is the only consumer for RSS then this requirement
5554                  * is not necessary.
5555                  */
5556                 if (j == pf->rss_size)
5557                         j = 0;
5558                 /* lut = 4-byte sliding window of 4 lut entries */
5559                 lut = (lut << 8) | (j &
5560                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
5561                 /* On i = 3, we have 4 entries in lut; write to the register */
5562                 if ((i & 3) == 3)
5563                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
5564         }
5565         i40e_flush(hw);
5566
5567         return 0;
5568 }
5569
5570 /**
5571  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
5572  * @pf: board private structure to initialize
5573  *
5574  * i40e_sw_init initializes the Adapter private data structure.
5575  * Fields are initialized based on PCI device information and
5576  * OS network device settings (MTU size).
5577  **/
5578 static int i40e_sw_init(struct i40e_pf *pf)
5579 {
5580         int err = 0;
5581         int size;
5582
5583         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
5584                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
5585         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
5586                 if (I40E_DEBUG_USER & debug)
5587                         pf->hw.debug_mask = debug;
5588                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
5589                                                 I40E_DEFAULT_MSG_ENABLE);
5590         }
5591
5592         /* Set default capability flags */
5593         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
5594                     I40E_FLAG_MSI_ENABLED     |
5595                     I40E_FLAG_MSIX_ENABLED    |
5596                     I40E_FLAG_RX_PS_ENABLED   |
5597                     I40E_FLAG_MQ_ENABLED      |
5598                     I40E_FLAG_RX_1BUF_ENABLED;
5599
5600         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
5601         if (pf->hw.func_caps.rss) {
5602                 pf->flags |= I40E_FLAG_RSS_ENABLED;
5603                 pf->rss_size = min_t(int, pf->rss_size_max,
5604                                      nr_cpus_node(numa_node_id()));
5605         } else {
5606                 pf->rss_size = 1;
5607         }
5608
5609         if (pf->hw.func_caps.dcb)
5610                 pf->num_tc_qps = I40E_DEFAULT_QUEUES_PER_TC;
5611         else
5612                 pf->num_tc_qps = 0;
5613
5614         if (pf->hw.func_caps.fd) {
5615                 /* FW/NVM is not yet fixed in this regard */
5616                 if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
5617                     (pf->hw.func_caps.fd_filters_best_effort > 0)) {
5618                         pf->flags |= I40E_FLAG_FDIR_ATR_ENABLED;
5619                         dev_info(&pf->pdev->dev,
5620                                  "Flow Director ATR mode Enabled\n");
5621                         pf->flags |= I40E_FLAG_FDIR_ENABLED;
5622                         dev_info(&pf->pdev->dev,
5623                                  "Flow Director Side Band mode Enabled\n");
5624                         pf->fdir_pf_filter_count =
5625                                          pf->hw.func_caps.fd_filters_guaranteed;
5626                 }
5627         } else {
5628                 pf->fdir_pf_filter_count = 0;
5629         }
5630
5631         if (pf->hw.func_caps.vmdq) {
5632                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
5633                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
5634                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
5635         }
5636
5637         /* MFP mode enabled */
5638         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
5639                 pf->flags |= I40E_FLAG_MFP_ENABLED;
5640                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
5641         }
5642
5643 #ifdef CONFIG_PCI_IOV
5644         if (pf->hw.func_caps.num_vfs) {
5645                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
5646                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
5647                 pf->num_req_vfs = min_t(int,
5648                                         pf->hw.func_caps.num_vfs,
5649                                         I40E_MAX_VF_COUNT);
5650         }
5651 #endif /* CONFIG_PCI_IOV */
5652         pf->eeprom_version = 0xDEAD;
5653         pf->lan_veb = I40E_NO_VEB;
5654         pf->lan_vsi = I40E_NO_VSI;
5655
5656         /* set up queue assignment tracking */
5657         size = sizeof(struct i40e_lump_tracking)
5658                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
5659         pf->qp_pile = kzalloc(size, GFP_KERNEL);
5660         if (!pf->qp_pile) {
5661                 err = -ENOMEM;
5662                 goto sw_init_done;
5663         }
5664         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
5665         pf->qp_pile->search_hint = 0;
5666
5667         /* set up vector assignment tracking */
5668         size = sizeof(struct i40e_lump_tracking)
5669                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
5670         pf->irq_pile = kzalloc(size, GFP_KERNEL);
5671         if (!pf->irq_pile) {
5672                 kfree(pf->qp_pile);
5673                 err = -ENOMEM;
5674                 goto sw_init_done;
5675         }
5676         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
5677         pf->irq_pile->search_hint = 0;
5678
5679         mutex_init(&pf->switch_mutex);
5680
5681 sw_init_done:
5682         return err;
5683 }
5684
5685 /**
5686  * i40e_set_features - set the netdev feature flags
5687  * @netdev: ptr to the netdev being adjusted
5688  * @features: the feature set that the stack is suggesting
5689  **/
5690 static int i40e_set_features(struct net_device *netdev,
5691                              netdev_features_t features)
5692 {
5693         struct i40e_netdev_priv *np = netdev_priv(netdev);
5694         struct i40e_vsi *vsi = np->vsi;
5695
5696         if (features & NETIF_F_HW_VLAN_CTAG_RX)
5697                 i40e_vlan_stripping_enable(vsi);
5698         else
5699                 i40e_vlan_stripping_disable(vsi);
5700
5701         return 0;
5702 }
5703
5704 static const struct net_device_ops i40e_netdev_ops = {
5705         .ndo_open               = i40e_open,
5706         .ndo_stop               = i40e_close,
5707         .ndo_start_xmit         = i40e_lan_xmit_frame,
5708         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
5709         .ndo_set_rx_mode        = i40e_set_rx_mode,
5710         .ndo_validate_addr      = eth_validate_addr,
5711         .ndo_set_mac_address    = i40e_set_mac,
5712         .ndo_change_mtu         = i40e_change_mtu,
5713         .ndo_tx_timeout         = i40e_tx_timeout,
5714         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
5715         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
5716 #ifdef CONFIG_NET_POLL_CONTROLLER
5717         .ndo_poll_controller    = i40e_netpoll,
5718 #endif
5719         .ndo_setup_tc           = i40e_setup_tc,
5720         .ndo_set_features       = i40e_set_features,
5721         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
5722         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
5723         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
5724         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
5725 };
5726
5727 /**
5728  * i40e_config_netdev - Setup the netdev flags
5729  * @vsi: the VSI being configured
5730  *
5731  * Returns 0 on success, negative value on failure
5732  **/
5733 static int i40e_config_netdev(struct i40e_vsi *vsi)
5734 {
5735         struct i40e_pf *pf = vsi->back;
5736         struct i40e_hw *hw = &pf->hw;
5737         struct i40e_netdev_priv *np;
5738         struct net_device *netdev;
5739         u8 mac_addr[ETH_ALEN];
5740         int etherdev_size;
5741
5742         etherdev_size = sizeof(struct i40e_netdev_priv);
5743         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
5744         if (!netdev)
5745                 return -ENOMEM;
5746
5747         vsi->netdev = netdev;
5748         np = netdev_priv(netdev);
5749         np->vsi = vsi;
5750
5751         netdev->hw_enc_features = NETIF_F_IP_CSUM        |
5752                                   NETIF_F_GSO_UDP_TUNNEL |
5753                                   NETIF_F_TSO            |
5754                                   NETIF_F_SG;
5755
5756         netdev->features = NETIF_F_SG                  |
5757                            NETIF_F_IP_CSUM             |
5758                            NETIF_F_SCTP_CSUM           |
5759                            NETIF_F_HIGHDMA             |
5760                            NETIF_F_GSO_UDP_TUNNEL      |
5761                            NETIF_F_HW_VLAN_CTAG_TX     |
5762                            NETIF_F_HW_VLAN_CTAG_RX     |
5763                            NETIF_F_HW_VLAN_CTAG_FILTER |
5764                            NETIF_F_IPV6_CSUM           |
5765                            NETIF_F_TSO                 |
5766                            NETIF_F_TSO6                |
5767                            NETIF_F_RXCSUM              |
5768                            NETIF_F_RXHASH              |
5769                            0;
5770
5771         /* copy netdev features into list of user selectable features */
5772         netdev->hw_features |= netdev->features;
5773
5774         if (vsi->type == I40E_VSI_MAIN) {
5775                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
5776                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
5777         } else {
5778                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
5779                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
5780                          pf->vsi[pf->lan_vsi]->netdev->name);
5781                 random_ether_addr(mac_addr);
5782                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
5783         }
5784
5785         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
5786         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
5787         /* vlan gets same features (except vlan offload)
5788          * after any tweaks for specific VSI types
5789          */
5790         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
5791                                                      NETIF_F_HW_VLAN_CTAG_RX |
5792                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
5793         netdev->priv_flags |= IFF_UNICAST_FLT;
5794         netdev->priv_flags |= IFF_SUPP_NOFCS;
5795         /* Setup netdev TC information */
5796         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
5797
5798         netdev->netdev_ops = &i40e_netdev_ops;
5799         netdev->watchdog_timeo = 5 * HZ;
5800         i40e_set_ethtool_ops(netdev);
5801
5802         return 0;
5803 }
5804
5805 /**
5806  * i40e_vsi_delete - Delete a VSI from the switch
5807  * @vsi: the VSI being removed
5808  *
5809  * Returns 0 on success, negative value on failure
5810  **/
5811 static void i40e_vsi_delete(struct i40e_vsi *vsi)
5812 {
5813         /* remove default VSI is not allowed */
5814         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
5815                 return;
5816
5817         /* there is no HW VSI for FDIR */
5818         if (vsi->type == I40E_VSI_FDIR)
5819                 return;
5820
5821         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
5822         return;
5823 }
5824
5825 /**
5826  * i40e_add_vsi - Add a VSI to the switch
5827  * @vsi: the VSI being configured
5828  *
5829  * This initializes a VSI context depending on the VSI type to be added and
5830  * passes it down to the add_vsi aq command.
5831  **/
5832 static int i40e_add_vsi(struct i40e_vsi *vsi)
5833 {
5834         int ret = -ENODEV;
5835         struct i40e_mac_filter *f, *ftmp;
5836         struct i40e_pf *pf = vsi->back;
5837         struct i40e_hw *hw = &pf->hw;
5838         struct i40e_vsi_context ctxt;
5839         u8 enabled_tc = 0x1; /* TC0 enabled */
5840         int f_count = 0;
5841
5842         memset(&ctxt, 0, sizeof(ctxt));
5843         switch (vsi->type) {
5844         case I40E_VSI_MAIN:
5845                 /* The PF's main VSI is already setup as part of the
5846                  * device initialization, so we'll not bother with
5847                  * the add_vsi call, but we will retrieve the current
5848                  * VSI context.
5849                  */
5850                 ctxt.seid = pf->main_vsi_seid;
5851                 ctxt.pf_num = pf->hw.pf_id;
5852                 ctxt.vf_num = 0;
5853                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5854                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5855                 if (ret) {
5856                         dev_info(&pf->pdev->dev,
5857                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
5858                                  ret, pf->hw.aq.asq_last_status);
5859                         return -ENOENT;
5860                 }
5861                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
5862                 vsi->info.valid_sections = 0;
5863
5864                 vsi->seid = ctxt.seid;
5865                 vsi->id = ctxt.vsi_number;
5866
5867                 enabled_tc = i40e_pf_get_tc_map(pf);
5868
5869                 /* MFP mode setup queue map and update VSI */
5870                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5871                         memset(&ctxt, 0, sizeof(ctxt));
5872                         ctxt.seid = pf->main_vsi_seid;
5873                         ctxt.pf_num = pf->hw.pf_id;
5874                         ctxt.vf_num = 0;
5875                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5876                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5877                         if (ret) {
5878                                 dev_info(&pf->pdev->dev,
5879                                          "update vsi failed, aq_err=%d\n",
5880                                          pf->hw.aq.asq_last_status);
5881                                 ret = -ENOENT;
5882                                 goto err;
5883                         }
5884                         /* update the local VSI info queue map */
5885                         i40e_vsi_update_queue_map(vsi, &ctxt);
5886                         vsi->info.valid_sections = 0;
5887                 } else {
5888                         /* Default/Main VSI is only enabled for TC0
5889                          * reconfigure it to enable all TCs that are
5890                          * available on the port in SFP mode.
5891                          */
5892                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5893                         if (ret) {
5894                                 dev_info(&pf->pdev->dev,
5895                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
5896                                          enabled_tc, ret,
5897                                          pf->hw.aq.asq_last_status);
5898                                 ret = -ENOENT;
5899                         }
5900                 }
5901                 break;
5902
5903         case I40E_VSI_FDIR:
5904                 /* no queue mapping or actual HW VSI needed */
5905                 vsi->info.valid_sections = 0;
5906                 vsi->seid = 0;
5907                 vsi->id = 0;
5908                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5909                 return 0;
5910                 break;
5911
5912         case I40E_VSI_VMDQ2:
5913                 ctxt.pf_num = hw->pf_id;
5914                 ctxt.vf_num = 0;
5915                 ctxt.uplink_seid = vsi->uplink_seid;
5916                 ctxt.connection_type = 0x1;     /* regular data port */
5917                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
5918
5919                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5920
5921                 /* This VSI is connected to VEB so the switch_id
5922                  * should be set to zero by default.
5923                  */
5924                 ctxt.info.switch_id = 0;
5925                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
5926                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5927
5928                 /* Setup the VSI tx/rx queue map for TC0 only for now */
5929                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5930                 break;
5931
5932         case I40E_VSI_SRIOV:
5933                 ctxt.pf_num = hw->pf_id;
5934                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
5935                 ctxt.uplink_seid = vsi->uplink_seid;
5936                 ctxt.connection_type = 0x1;     /* regular data port */
5937                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
5938
5939                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5940
5941                 /* This VSI is connected to VEB so the switch_id
5942                  * should be set to zero by default.
5943                  */
5944                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5945
5946                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
5947                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
5948                 /* Setup the VSI tx/rx queue map for TC0 only for now */
5949                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5950                 break;
5951
5952         default:
5953                 return -ENODEV;
5954         }
5955
5956         if (vsi->type != I40E_VSI_MAIN) {
5957                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
5958                 if (ret) {
5959                         dev_info(&vsi->back->pdev->dev,
5960                                  "add vsi failed, aq_err=%d\n",
5961                                  vsi->back->hw.aq.asq_last_status);
5962                         ret = -ENOENT;
5963                         goto err;
5964                 }
5965                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
5966                 vsi->info.valid_sections = 0;
5967                 vsi->seid = ctxt.seid;
5968                 vsi->id = ctxt.vsi_number;
5969         }
5970
5971         /* If macvlan filters already exist, force them to get loaded */
5972         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
5973                 f->changed = true;
5974                 f_count++;
5975         }
5976         if (f_count) {
5977                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
5978                 pf->flags |= I40E_FLAG_FILTER_SYNC;
5979         }
5980
5981         /* Update VSI BW information */
5982         ret = i40e_vsi_get_bw_info(vsi);
5983         if (ret) {
5984                 dev_info(&pf->pdev->dev,
5985                          "couldn't get vsi bw info, err %d, aq_err %d\n",
5986                          ret, pf->hw.aq.asq_last_status);
5987                 /* VSI is already added so not tearing that up */
5988                 ret = 0;
5989         }
5990
5991 err:
5992         return ret;
5993 }
5994
5995 /**
5996  * i40e_vsi_release - Delete a VSI and free its resources
5997  * @vsi: the VSI being removed
5998  *
5999  * Returns 0 on success or < 0 on error
6000  **/
6001 int i40e_vsi_release(struct i40e_vsi *vsi)
6002 {
6003         struct i40e_mac_filter *f, *ftmp;
6004         struct i40e_veb *veb = NULL;
6005         struct i40e_pf *pf;
6006         u16 uplink_seid;
6007         int i, n;
6008
6009         pf = vsi->back;
6010
6011         /* release of a VEB-owner or last VSI is not allowed */
6012         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6013                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6014                          vsi->seid, vsi->uplink_seid);
6015                 return -ENODEV;
6016         }
6017         if (vsi == pf->vsi[pf->lan_vsi] &&
6018             !test_bit(__I40E_DOWN, &pf->state)) {
6019                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6020                 return -ENODEV;
6021         }
6022
6023         uplink_seid = vsi->uplink_seid;
6024         if (vsi->type != I40E_VSI_SRIOV) {
6025                 if (vsi->netdev_registered) {
6026                         vsi->netdev_registered = false;
6027                         if (vsi->netdev) {
6028                                 /* results in a call to i40e_close() */
6029                                 unregister_netdev(vsi->netdev);
6030                                 free_netdev(vsi->netdev);
6031                                 vsi->netdev = NULL;
6032                         }
6033                 } else {
6034                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6035                                 i40e_down(vsi);
6036                         i40e_vsi_free_irq(vsi);
6037                         i40e_vsi_free_tx_resources(vsi);
6038                         i40e_vsi_free_rx_resources(vsi);
6039                 }
6040                 i40e_vsi_disable_irq(vsi);
6041         }
6042
6043         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6044                 i40e_del_filter(vsi, f->macaddr, f->vlan,
6045                                 f->is_vf, f->is_netdev);
6046         i40e_sync_vsi_filters(vsi);
6047
6048         i40e_vsi_delete(vsi);
6049         i40e_vsi_free_q_vectors(vsi);
6050         i40e_vsi_clear_rings(vsi);
6051         i40e_vsi_clear(vsi);
6052
6053         /* If this was the last thing on the VEB, except for the
6054          * controlling VSI, remove the VEB, which puts the controlling
6055          * VSI onto the next level down in the switch.
6056          *
6057          * Well, okay, there's one more exception here: don't remove
6058          * the orphan VEBs yet.  We'll wait for an explicit remove request
6059          * from up the network stack.
6060          */
6061         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6062                 if (pf->vsi[i] &&
6063                     pf->vsi[i]->uplink_seid == uplink_seid &&
6064                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6065                         n++;      /* count the VSIs */
6066                 }
6067         }
6068         for (i = 0; i < I40E_MAX_VEB; i++) {
6069                 if (!pf->veb[i])
6070                         continue;
6071                 if (pf->veb[i]->uplink_seid == uplink_seid)
6072                         n++;     /* count the VEBs */
6073                 if (pf->veb[i]->seid == uplink_seid)
6074                         veb = pf->veb[i];
6075         }
6076         if (n == 0 && veb && veb->uplink_seid != 0)
6077                 i40e_veb_release(veb);
6078
6079         return 0;
6080 }
6081
6082 /**
6083  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
6084  * @vsi: ptr to the VSI
6085  *
6086  * This should only be called after i40e_vsi_mem_alloc() which allocates the
6087  * corresponding SW VSI structure and initializes num_queue_pairs for the
6088  * newly allocated VSI.
6089  *
6090  * Returns 0 on success or negative on failure
6091  **/
6092 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
6093 {
6094         int ret = -ENOENT;
6095         struct i40e_pf *pf = vsi->back;
6096
6097         if (vsi->q_vectors[0]) {
6098                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
6099                          vsi->seid);
6100                 return -EEXIST;
6101         }
6102
6103         if (vsi->base_vector) {
6104                 dev_info(&pf->pdev->dev,
6105                          "VSI %d has non-zero base vector %d\n",
6106                          vsi->seid, vsi->base_vector);
6107                 return -EEXIST;
6108         }
6109
6110         ret = i40e_alloc_q_vectors(vsi);
6111         if (ret) {
6112                 dev_info(&pf->pdev->dev,
6113                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
6114                          vsi->num_q_vectors, vsi->seid, ret);
6115                 vsi->num_q_vectors = 0;
6116                 goto vector_setup_out;
6117         }
6118
6119         if (vsi->num_q_vectors)
6120                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
6121                                                  vsi->num_q_vectors, vsi->idx);
6122         if (vsi->base_vector < 0) {
6123                 dev_info(&pf->pdev->dev,
6124                          "failed to get q tracking for VSI %d, err=%d\n",
6125                          vsi->seid, vsi->base_vector);
6126                 i40e_vsi_free_q_vectors(vsi);
6127                 ret = -ENOENT;
6128                 goto vector_setup_out;
6129         }
6130
6131 vector_setup_out:
6132         return ret;
6133 }
6134
6135 /**
6136  * i40e_vsi_setup - Set up a VSI by a given type
6137  * @pf: board private structure
6138  * @type: VSI type
6139  * @uplink_seid: the switch element to link to
6140  * @param1: usage depends upon VSI type. For VF types, indicates VF id
6141  *
6142  * This allocates the sw VSI structure and its queue resources, then add a VSI
6143  * to the identified VEB.
6144  *
6145  * Returns pointer to the successfully allocated and configure VSI sw struct on
6146  * success, otherwise returns NULL on failure.
6147  **/
6148 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
6149                                 u16 uplink_seid, u32 param1)
6150 {
6151         struct i40e_vsi *vsi = NULL;
6152         struct i40e_veb *veb = NULL;
6153         int ret, i;
6154         int v_idx;
6155
6156         /* The requested uplink_seid must be either
6157          *     - the PF's port seid
6158          *              no VEB is needed because this is the PF
6159          *              or this is a Flow Director special case VSI
6160          *     - seid of an existing VEB
6161          *     - seid of a VSI that owns an existing VEB
6162          *     - seid of a VSI that doesn't own a VEB
6163          *              a new VEB is created and the VSI becomes the owner
6164          *     - seid of the PF VSI, which is what creates the first VEB
6165          *              this is a special case of the previous
6166          *
6167          * Find which uplink_seid we were given and create a new VEB if needed
6168          */
6169         for (i = 0; i < I40E_MAX_VEB; i++) {
6170                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
6171                         veb = pf->veb[i];
6172                         break;
6173                 }
6174         }
6175
6176         if (!veb && uplink_seid != pf->mac_seid) {
6177
6178                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6179                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
6180                                 vsi = pf->vsi[i];
6181                                 break;
6182                         }
6183                 }
6184                 if (!vsi) {
6185                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
6186                                  uplink_seid);
6187                         return NULL;
6188                 }
6189
6190                 if (vsi->uplink_seid == pf->mac_seid)
6191                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
6192                                              vsi->tc_config.enabled_tc);
6193                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
6194                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
6195                                              vsi->tc_config.enabled_tc);
6196
6197                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
6198                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
6199                                 veb = pf->veb[i];
6200                 }
6201                 if (!veb) {
6202                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
6203                         return NULL;
6204                 }
6205
6206                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6207                 uplink_seid = veb->seid;
6208         }
6209
6210         /* get vsi sw struct */
6211         v_idx = i40e_vsi_mem_alloc(pf, type);
6212         if (v_idx < 0)
6213                 goto err_alloc;
6214         vsi = pf->vsi[v_idx];
6215         vsi->type = type;
6216         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
6217
6218         if (type == I40E_VSI_MAIN)
6219                 pf->lan_vsi = v_idx;
6220         else if (type == I40E_VSI_SRIOV)
6221                 vsi->vf_id = param1;
6222         /* assign it some queues */
6223         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
6224         if (ret < 0) {
6225                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
6226                          vsi->seid, ret);
6227                 goto err_vsi;
6228         }
6229         vsi->base_queue = ret;
6230
6231         /* get a VSI from the hardware */
6232         vsi->uplink_seid = uplink_seid;
6233         ret = i40e_add_vsi(vsi);
6234         if (ret)
6235                 goto err_vsi;
6236
6237         switch (vsi->type) {
6238         /* setup the netdev if needed */
6239         case I40E_VSI_MAIN:
6240         case I40E_VSI_VMDQ2:
6241                 ret = i40e_config_netdev(vsi);
6242                 if (ret)
6243                         goto err_netdev;
6244                 ret = register_netdev(vsi->netdev);
6245                 if (ret)
6246                         goto err_netdev;
6247                 vsi->netdev_registered = true;
6248                 netif_carrier_off(vsi->netdev);
6249                 /* fall through */
6250
6251         case I40E_VSI_FDIR:
6252                 /* set up vectors and rings if needed */
6253                 ret = i40e_vsi_setup_vectors(vsi);
6254                 if (ret)
6255                         goto err_msix;
6256
6257                 ret = i40e_alloc_rings(vsi);
6258                 if (ret)
6259                         goto err_rings;
6260
6261                 /* map all of the rings to the q_vectors */
6262                 i40e_vsi_map_rings_to_vectors(vsi);
6263
6264                 i40e_vsi_reset_stats(vsi);
6265                 break;
6266
6267         default:
6268                 /* no netdev or rings for the other VSI types */
6269                 break;
6270         }
6271
6272         return vsi;
6273
6274 err_rings:
6275         i40e_vsi_free_q_vectors(vsi);
6276 err_msix:
6277         if (vsi->netdev_registered) {
6278                 vsi->netdev_registered = false;
6279                 unregister_netdev(vsi->netdev);
6280                 free_netdev(vsi->netdev);
6281                 vsi->netdev = NULL;
6282         }
6283 err_netdev:
6284         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
6285 err_vsi:
6286         i40e_vsi_clear(vsi);
6287 err_alloc:
6288         return NULL;
6289 }
6290
6291 /**
6292  * i40e_veb_get_bw_info - Query VEB BW information
6293  * @veb: the veb to query
6294  *
6295  * Query the Tx scheduler BW configuration data for given VEB
6296  **/
6297 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
6298 {
6299         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
6300         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
6301         struct i40e_pf *pf = veb->pf;
6302         struct i40e_hw *hw = &pf->hw;
6303         u32 tc_bw_max;
6304         int ret = 0;
6305         int i;
6306
6307         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
6308                                                   &bw_data, NULL);
6309         if (ret) {
6310                 dev_info(&pf->pdev->dev,
6311                          "query veb bw config failed, aq_err=%d\n",
6312                          hw->aq.asq_last_status);
6313                 goto out;
6314         }
6315
6316         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
6317                                                    &ets_data, NULL);
6318         if (ret) {
6319                 dev_info(&pf->pdev->dev,
6320                          "query veb bw ets config failed, aq_err=%d\n",
6321                          hw->aq.asq_last_status);
6322                 goto out;
6323         }
6324
6325         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
6326         veb->bw_max_quanta = ets_data.tc_bw_max;
6327         veb->is_abs_credits = bw_data.absolute_credits_enable;
6328         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
6329                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
6330         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6331                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
6332                 veb->bw_tc_limit_credits[i] =
6333                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
6334                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
6335         }
6336
6337 out:
6338         return ret;
6339 }
6340
6341 /**
6342  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
6343  * @pf: board private structure
6344  *
6345  * On error: returns error code (negative)
6346  * On success: returns vsi index in PF (positive)
6347  **/
6348 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
6349 {
6350         int ret = -ENOENT;
6351         struct i40e_veb *veb;
6352         int i;
6353
6354         /* Need to protect the allocation of switch elements at the PF level */
6355         mutex_lock(&pf->switch_mutex);
6356
6357         /* VEB list may be fragmented if VEB creation/destruction has
6358          * been happening.  We can afford to do a quick scan to look
6359          * for any free slots in the list.
6360          *
6361          * find next empty veb slot, looping back around if necessary
6362          */
6363         i = 0;
6364         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
6365                 i++;
6366         if (i >= I40E_MAX_VEB) {
6367                 ret = -ENOMEM;
6368                 goto err_alloc_veb;  /* out of VEB slots! */
6369         }
6370
6371         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
6372         if (!veb) {
6373                 ret = -ENOMEM;
6374                 goto err_alloc_veb;
6375         }
6376         veb->pf = pf;
6377         veb->idx = i;
6378         veb->enabled_tc = 1;
6379
6380         pf->veb[i] = veb;
6381         ret = i;
6382 err_alloc_veb:
6383         mutex_unlock(&pf->switch_mutex);
6384         return ret;
6385 }
6386
6387 /**
6388  * i40e_switch_branch_release - Delete a branch of the switch tree
6389  * @branch: where to start deleting
6390  *
6391  * This uses recursion to find the tips of the branch to be
6392  * removed, deleting until we get back to and can delete this VEB.
6393  **/
6394 static void i40e_switch_branch_release(struct i40e_veb *branch)
6395 {
6396         struct i40e_pf *pf = branch->pf;
6397         u16 branch_seid = branch->seid;
6398         u16 veb_idx = branch->idx;
6399         int i;
6400
6401         /* release any VEBs on this VEB - RECURSION */
6402         for (i = 0; i < I40E_MAX_VEB; i++) {
6403                 if (!pf->veb[i])
6404                         continue;
6405                 if (pf->veb[i]->uplink_seid == branch->seid)
6406                         i40e_switch_branch_release(pf->veb[i]);
6407         }
6408
6409         /* Release the VSIs on this VEB, but not the owner VSI.
6410          *
6411          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
6412          *       the VEB itself, so don't use (*branch) after this loop.
6413          */
6414         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6415                 if (!pf->vsi[i])
6416                         continue;
6417                 if (pf->vsi[i]->uplink_seid == branch_seid &&
6418                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6419                         i40e_vsi_release(pf->vsi[i]);
6420                 }
6421         }
6422
6423         /* There's one corner case where the VEB might not have been
6424          * removed, so double check it here and remove it if needed.
6425          * This case happens if the veb was created from the debugfs
6426          * commands and no VSIs were added to it.
6427          */
6428         if (pf->veb[veb_idx])
6429                 i40e_veb_release(pf->veb[veb_idx]);
6430 }
6431
6432 /**
6433  * i40e_veb_clear - remove veb struct
6434  * @veb: the veb to remove
6435  **/
6436 static void i40e_veb_clear(struct i40e_veb *veb)
6437 {
6438         if (!veb)
6439                 return;
6440
6441         if (veb->pf) {
6442                 struct i40e_pf *pf = veb->pf;
6443
6444                 mutex_lock(&pf->switch_mutex);
6445                 if (pf->veb[veb->idx] == veb)
6446                         pf->veb[veb->idx] = NULL;
6447                 mutex_unlock(&pf->switch_mutex);
6448         }
6449
6450         kfree(veb);
6451 }
6452
6453 /**
6454  * i40e_veb_release - Delete a VEB and free its resources
6455  * @veb: the VEB being removed
6456  **/
6457 void i40e_veb_release(struct i40e_veb *veb)
6458 {
6459         struct i40e_vsi *vsi = NULL;
6460         struct i40e_pf *pf;
6461         int i, n = 0;
6462
6463         pf = veb->pf;
6464
6465         /* find the remaining VSI and check for extras */
6466         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6467                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
6468                         n++;
6469                         vsi = pf->vsi[i];
6470                 }
6471         }
6472         if (n != 1) {
6473                 dev_info(&pf->pdev->dev,
6474                          "can't remove VEB %d with %d VSIs left\n",
6475                          veb->seid, n);
6476                 return;
6477         }
6478
6479         /* move the remaining VSI to uplink veb */
6480         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
6481         if (veb->uplink_seid) {
6482                 vsi->uplink_seid = veb->uplink_seid;
6483                 if (veb->uplink_seid == pf->mac_seid)
6484                         vsi->veb_idx = I40E_NO_VEB;
6485                 else
6486                         vsi->veb_idx = veb->veb_idx;
6487         } else {
6488                 /* floating VEB */
6489                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6490                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
6491         }
6492
6493         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
6494         i40e_veb_clear(veb);
6495
6496         return;
6497 }
6498
6499 /**
6500  * i40e_add_veb - create the VEB in the switch
6501  * @veb: the VEB to be instantiated
6502  * @vsi: the controlling VSI
6503  **/
6504 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
6505 {
6506         bool is_default = (vsi->idx == vsi->back->lan_vsi);
6507         int ret;
6508
6509         /* get a VEB from the hardware */
6510         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
6511                               veb->enabled_tc, is_default, &veb->seid, NULL);
6512         if (ret) {
6513                 dev_info(&veb->pf->pdev->dev,
6514                          "couldn't add VEB, err %d, aq_err %d\n",
6515                          ret, veb->pf->hw.aq.asq_last_status);
6516                 return -EPERM;
6517         }
6518
6519         /* get statistics counter */
6520         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
6521                                          &veb->stats_idx, NULL, NULL, NULL);
6522         if (ret) {
6523                 dev_info(&veb->pf->pdev->dev,
6524                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
6525                          ret, veb->pf->hw.aq.asq_last_status);
6526                 return -EPERM;
6527         }
6528         ret = i40e_veb_get_bw_info(veb);
6529         if (ret) {
6530                 dev_info(&veb->pf->pdev->dev,
6531                          "couldn't get VEB bw info, err %d, aq_err %d\n",
6532                          ret, veb->pf->hw.aq.asq_last_status);
6533                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
6534                 return -ENOENT;
6535         }
6536
6537         vsi->uplink_seid = veb->seid;
6538         vsi->veb_idx = veb->idx;
6539         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6540
6541         return 0;
6542 }
6543
6544 /**
6545  * i40e_veb_setup - Set up a VEB
6546  * @pf: board private structure
6547  * @flags: VEB setup flags
6548  * @uplink_seid: the switch element to link to
6549  * @vsi_seid: the initial VSI seid
6550  * @enabled_tc: Enabled TC bit-map
6551  *
6552  * This allocates the sw VEB structure and links it into the switch
6553  * It is possible and legal for this to be a duplicate of an already
6554  * existing VEB.  It is also possible for both uplink and vsi seids
6555  * to be zero, in order to create a floating VEB.
6556  *
6557  * Returns pointer to the successfully allocated VEB sw struct on
6558  * success, otherwise returns NULL on failure.
6559  **/
6560 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
6561                                 u16 uplink_seid, u16 vsi_seid,
6562                                 u8 enabled_tc)
6563 {
6564         struct i40e_veb *veb, *uplink_veb = NULL;
6565         int vsi_idx, veb_idx;
6566         int ret;
6567
6568         /* if one seid is 0, the other must be 0 to create a floating relay */
6569         if ((uplink_seid == 0 || vsi_seid == 0) &&
6570             (uplink_seid + vsi_seid != 0)) {
6571                 dev_info(&pf->pdev->dev,
6572                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
6573                          uplink_seid, vsi_seid);
6574                 return NULL;
6575         }
6576
6577         /* make sure there is such a vsi and uplink */
6578         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
6579                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
6580                         break;
6581         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
6582                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
6583                          vsi_seid);
6584                 return NULL;
6585         }
6586
6587         if (uplink_seid && uplink_seid != pf->mac_seid) {
6588                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6589                         if (pf->veb[veb_idx] &&
6590                             pf->veb[veb_idx]->seid == uplink_seid) {
6591                                 uplink_veb = pf->veb[veb_idx];
6592                                 break;
6593                         }
6594                 }
6595                 if (!uplink_veb) {
6596                         dev_info(&pf->pdev->dev,
6597                                  "uplink seid %d not found\n", uplink_seid);
6598                         return NULL;
6599                 }
6600         }
6601
6602         /* get veb sw struct */
6603         veb_idx = i40e_veb_mem_alloc(pf);
6604         if (veb_idx < 0)
6605                 goto err_alloc;
6606         veb = pf->veb[veb_idx];
6607         veb->flags = flags;
6608         veb->uplink_seid = uplink_seid;
6609         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
6610         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
6611
6612         /* create the VEB in the switch */
6613         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
6614         if (ret)
6615                 goto err_veb;
6616
6617         return veb;
6618
6619 err_veb:
6620         i40e_veb_clear(veb);
6621 err_alloc:
6622         return NULL;
6623 }
6624
6625 /**
6626  * i40e_setup_pf_switch_element - set pf vars based on switch type
6627  * @pf: board private structure
6628  * @ele: element we are building info from
6629  * @num_reported: total number of elements
6630  * @printconfig: should we print the contents
6631  *
6632  * helper function to assist in extracting a few useful SEID values.
6633  **/
6634 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
6635                                 struct i40e_aqc_switch_config_element_resp *ele,
6636                                 u16 num_reported, bool printconfig)
6637 {
6638         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
6639         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
6640         u8 element_type = ele->element_type;
6641         u16 seid = le16_to_cpu(ele->seid);
6642
6643         if (printconfig)
6644                 dev_info(&pf->pdev->dev,
6645                          "type=%d seid=%d uplink=%d downlink=%d\n",
6646                          element_type, seid, uplink_seid, downlink_seid);
6647
6648         switch (element_type) {
6649         case I40E_SWITCH_ELEMENT_TYPE_MAC:
6650                 pf->mac_seid = seid;
6651                 break;
6652         case I40E_SWITCH_ELEMENT_TYPE_VEB:
6653                 /* Main VEB? */
6654                 if (uplink_seid != pf->mac_seid)
6655                         break;
6656                 if (pf->lan_veb == I40E_NO_VEB) {
6657                         int v;
6658
6659                         /* find existing or else empty VEB */
6660                         for (v = 0; v < I40E_MAX_VEB; v++) {
6661                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
6662                                         pf->lan_veb = v;
6663                                         break;
6664                                 }
6665                         }
6666                         if (pf->lan_veb == I40E_NO_VEB) {
6667                                 v = i40e_veb_mem_alloc(pf);
6668                                 if (v < 0)
6669                                         break;
6670                                 pf->lan_veb = v;
6671                         }
6672                 }
6673
6674                 pf->veb[pf->lan_veb]->seid = seid;
6675                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
6676                 pf->veb[pf->lan_veb]->pf = pf;
6677                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
6678                 break;
6679         case I40E_SWITCH_ELEMENT_TYPE_VSI:
6680                 if (num_reported != 1)
6681                         break;
6682                 /* This is immediately after a reset so we can assume this is
6683                  * the PF's VSI
6684                  */
6685                 pf->mac_seid = uplink_seid;
6686                 pf->pf_seid = downlink_seid;
6687                 pf->main_vsi_seid = seid;
6688                 if (printconfig)
6689                         dev_info(&pf->pdev->dev,
6690                                  "pf_seid=%d main_vsi_seid=%d\n",
6691                                  pf->pf_seid, pf->main_vsi_seid);
6692                 break;
6693         case I40E_SWITCH_ELEMENT_TYPE_PF:
6694         case I40E_SWITCH_ELEMENT_TYPE_VF:
6695         case I40E_SWITCH_ELEMENT_TYPE_EMP:
6696         case I40E_SWITCH_ELEMENT_TYPE_BMC:
6697         case I40E_SWITCH_ELEMENT_TYPE_PE:
6698         case I40E_SWITCH_ELEMENT_TYPE_PA:
6699                 /* ignore these for now */
6700                 break;
6701         default:
6702                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
6703                          element_type, seid);
6704                 break;
6705         }
6706 }
6707
6708 /**
6709  * i40e_fetch_switch_configuration - Get switch config from firmware
6710  * @pf: board private structure
6711  * @printconfig: should we print the contents
6712  *
6713  * Get the current switch configuration from the device and
6714  * extract a few useful SEID values.
6715  **/
6716 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
6717 {
6718         struct i40e_aqc_get_switch_config_resp *sw_config;
6719         u16 next_seid = 0;
6720         int ret = 0;
6721         u8 *aq_buf;
6722         int i;
6723
6724         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
6725         if (!aq_buf)
6726                 return -ENOMEM;
6727
6728         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
6729         do {
6730                 u16 num_reported, num_total;
6731
6732                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
6733                                                 I40E_AQ_LARGE_BUF,
6734                                                 &next_seid, NULL);
6735                 if (ret) {
6736                         dev_info(&pf->pdev->dev,
6737                                  "get switch config failed %d aq_err=%x\n",
6738                                  ret, pf->hw.aq.asq_last_status);
6739                         kfree(aq_buf);
6740                         return -ENOENT;
6741                 }
6742
6743                 num_reported = le16_to_cpu(sw_config->header.num_reported);
6744                 num_total = le16_to_cpu(sw_config->header.num_total);
6745
6746                 if (printconfig)
6747                         dev_info(&pf->pdev->dev,
6748                                  "header: %d reported %d total\n",
6749                                  num_reported, num_total);
6750
6751                 if (num_reported) {
6752                         int sz = sizeof(*sw_config) * num_reported;
6753
6754                         kfree(pf->sw_config);
6755                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
6756                         if (pf->sw_config)
6757                                 memcpy(pf->sw_config, sw_config, sz);
6758                 }
6759
6760                 for (i = 0; i < num_reported; i++) {
6761                         struct i40e_aqc_switch_config_element_resp *ele =
6762                                 &sw_config->element[i];
6763
6764                         i40e_setup_pf_switch_element(pf, ele, num_reported,
6765                                                      printconfig);
6766                 }
6767         } while (next_seid != 0);
6768
6769         kfree(aq_buf);
6770         return ret;
6771 }
6772
6773 /**
6774  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
6775  * @pf: board private structure
6776  *
6777  * Returns 0 on success, negative value on failure
6778  **/
6779 static int i40e_setup_pf_switch(struct i40e_pf *pf)
6780 {
6781         int ret;
6782
6783         /* find out what's out there already */
6784         ret = i40e_fetch_switch_configuration(pf, false);
6785         if (ret) {
6786                 dev_info(&pf->pdev->dev,
6787                          "couldn't fetch switch config, err %d, aq_err %d\n",
6788                          ret, pf->hw.aq.asq_last_status);
6789                 return ret;
6790         }
6791         i40e_pf_reset_stats(pf);
6792
6793         /* fdir VSI must happen first to be sure it gets queue 0, but only
6794          * if there is enough room for the fdir VSI
6795          */
6796         if (pf->num_lan_qps > 1)
6797                 i40e_fdir_setup(pf);
6798
6799         /* first time setup */
6800         if (pf->lan_vsi == I40E_NO_VSI) {
6801                 struct i40e_vsi *vsi = NULL;
6802                 u16 uplink_seid;
6803
6804                 /* Set up the PF VSI associated with the PF's main VSI
6805                  * that is already in the HW switch
6806                  */
6807                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6808                         uplink_seid = pf->veb[pf->lan_veb]->seid;
6809                 else
6810                         uplink_seid = pf->mac_seid;
6811
6812                 vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
6813                 if (!vsi) {
6814                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
6815                         i40e_fdir_teardown(pf);
6816                         return -EAGAIN;
6817                 }
6818                 /* accommodate kcompat by copying the main VSI queue count
6819                  * into the pf, since this newer code pushes the pf queue
6820                  * info down a level into a VSI
6821                  */
6822                 pf->num_rx_queues = vsi->alloc_queue_pairs;
6823                 pf->num_tx_queues = vsi->alloc_queue_pairs;
6824         } else {
6825                 /* force a reset of TC and queue layout configurations */
6826                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
6827                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
6828                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
6829                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
6830         }
6831         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
6832
6833         /* Setup static PF queue filter control settings */
6834         ret = i40e_setup_pf_filter_control(pf);
6835         if (ret) {
6836                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
6837                          ret);
6838                 /* Failure here should not stop continuing other steps */
6839         }
6840
6841         /* enable RSS in the HW, even for only one queue, as the stack can use
6842          * the hash
6843          */
6844         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
6845                 i40e_config_rss(pf);
6846
6847         /* fill in link information and enable LSE reporting */
6848         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
6849         i40e_link_event(pf);
6850
6851         /* Initialize user-specifics link properties */
6852         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
6853                                   I40E_AQ_AN_COMPLETED) ? true : false);
6854         pf->hw.fc.requested_mode = I40E_FC_DEFAULT;
6855         if (pf->hw.phy.link_info.an_info &
6856            (I40E_AQ_LINK_PAUSE_TX | I40E_AQ_LINK_PAUSE_RX))
6857                 pf->hw.fc.current_mode = I40E_FC_FULL;
6858         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
6859                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
6860         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
6861                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
6862         else
6863                 pf->hw.fc.current_mode = I40E_FC_DEFAULT;
6864
6865         return ret;
6866 }
6867
6868 /**
6869  * i40e_set_rss_size - helper to set rss_size
6870  * @pf: board private structure
6871  * @queues_left: how many queues
6872  */
6873 static u16 i40e_set_rss_size(struct i40e_pf *pf, int queues_left)
6874 {
6875         int num_tc0;
6876
6877         num_tc0 = min_t(int, queues_left, pf->rss_size_max);
6878         num_tc0 = min_t(int, num_tc0, nr_cpus_node(numa_node_id()));
6879         num_tc0 = rounddown_pow_of_two(num_tc0);
6880
6881         return num_tc0;
6882 }
6883
6884 /**
6885  * i40e_determine_queue_usage - Work out queue distribution
6886  * @pf: board private structure
6887  **/
6888 static void i40e_determine_queue_usage(struct i40e_pf *pf)
6889 {
6890         int accum_tc_size;
6891         int queues_left;
6892
6893         pf->num_lan_qps = 0;
6894         pf->num_tc_qps = rounddown_pow_of_two(pf->num_tc_qps);
6895         accum_tc_size = (I40E_MAX_TRAFFIC_CLASS - 1) * pf->num_tc_qps;
6896
6897         /* Find the max queues to be put into basic use.  We'll always be
6898          * using TC0, whether or not DCB is running, and TC0 will get the
6899          * big RSS set.
6900          */
6901         queues_left = pf->hw.func_caps.num_tx_qp;
6902
6903         if   (!((pf->flags & I40E_FLAG_MSIX_ENABLED)             &&
6904                 (pf->flags & I40E_FLAG_MQ_ENABLED))              ||
6905                 !(pf->flags & (I40E_FLAG_RSS_ENABLED |
6906                 I40E_FLAG_FDIR_ENABLED | I40E_FLAG_DCB_ENABLED)) ||
6907                 (queues_left == 1)) {
6908
6909                 /* one qp for PF, no queues for anything else */
6910                 queues_left = 0;
6911                 pf->rss_size = pf->num_lan_qps = 1;
6912
6913                 /* make sure all the fancies are disabled */
6914                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED       |
6915                                 I40E_FLAG_MQ_ENABLED       |
6916                                 I40E_FLAG_FDIR_ENABLED     |
6917                                 I40E_FLAG_FDIR_ATR_ENABLED |
6918                                 I40E_FLAG_DCB_ENABLED      |
6919                                 I40E_FLAG_SRIOV_ENABLED    |
6920                                 I40E_FLAG_VMDQ_ENABLED);
6921
6922         } else if (pf->flags & I40E_FLAG_RSS_ENABLED      &&
6923                    !(pf->flags & I40E_FLAG_FDIR_ENABLED)  &&
6924                    !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
6925
6926                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6927
6928                 queues_left -= pf->rss_size;
6929                 pf->num_lan_qps = pf->rss_size;
6930
6931         } else if (pf->flags & I40E_FLAG_RSS_ENABLED      &&
6932                    !(pf->flags & I40E_FLAG_FDIR_ENABLED)  &&
6933                    (pf->flags & I40E_FLAG_DCB_ENABLED)) {
6934
6935                 /* save num_tc_qps queues for TCs 1 thru 7 and the rest
6936                  * are set up for RSS in TC0
6937                  */
6938                 queues_left -= accum_tc_size;
6939
6940                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6941
6942                 queues_left -= pf->rss_size;
6943                 if (queues_left < 0) {
6944                         dev_info(&pf->pdev->dev, "not enough queues for DCB\n");
6945                         return;
6946                 }
6947
6948                 pf->num_lan_qps = pf->rss_size + accum_tc_size;
6949
6950         } else if (pf->flags & I40E_FLAG_RSS_ENABLED   &&
6951                   (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
6952                   !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
6953
6954                 queues_left -= 1; /* save 1 queue for FD */
6955
6956                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6957
6958                 queues_left -= pf->rss_size;
6959                 if (queues_left < 0) {
6960                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director\n");
6961                         return;
6962                 }
6963
6964                 pf->num_lan_qps = pf->rss_size;
6965
6966         } else if (pf->flags & I40E_FLAG_RSS_ENABLED   &&
6967                   (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
6968                   (pf->flags & I40E_FLAG_DCB_ENABLED)) {
6969
6970                 /* save 1 queue for TCs 1 thru 7,
6971                  * 1 queue for flow director,
6972                  * and the rest are set up for RSS in TC0
6973                  */
6974                 queues_left -= 1;
6975                 queues_left -= accum_tc_size;
6976
6977                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6978                 queues_left -= pf->rss_size;
6979                 if (queues_left < 0) {
6980                         dev_info(&pf->pdev->dev, "not enough queues for DCB and Flow Director\n");
6981                         return;
6982                 }
6983
6984                 pf->num_lan_qps = pf->rss_size + accum_tc_size;
6985
6986         } else {
6987                 dev_info(&pf->pdev->dev,
6988                          "Invalid configuration, flags=0x%08llx\n", pf->flags);
6989                 return;
6990         }
6991
6992         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
6993             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
6994                 pf->num_req_vfs = min_t(int, pf->num_req_vfs, (queues_left /
6995                                                                pf->num_vf_qps));
6996                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
6997         }
6998
6999         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7000             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
7001                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
7002                                           (queues_left / pf->num_vmdq_qps));
7003                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
7004         }
7005
7006         return;
7007 }
7008
7009 /**
7010  * i40e_setup_pf_filter_control - Setup PF static filter control
7011  * @pf: PF to be setup
7012  *
7013  * i40e_setup_pf_filter_control sets up a pf's initial filter control
7014  * settings. If PE/FCoE are enabled then it will also set the per PF
7015  * based filter sizes required for them. It also enables Flow director,
7016  * ethertype and macvlan type filter settings for the pf.
7017  *
7018  * Returns 0 on success, negative on failure
7019  **/
7020 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
7021 {
7022         struct i40e_filter_control_settings *settings = &pf->filter_settings;
7023
7024         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
7025
7026         /* Flow Director is enabled */
7027         if (pf->flags & (I40E_FLAG_FDIR_ENABLED | I40E_FLAG_FDIR_ATR_ENABLED))
7028                 settings->enable_fdir = true;
7029
7030         /* Ethtype and MACVLAN filters enabled for PF */
7031         settings->enable_ethtype = true;
7032         settings->enable_macvlan = true;
7033
7034         if (i40e_set_filter_control(&pf->hw, settings))
7035                 return -ENOENT;
7036
7037         return 0;
7038 }
7039
7040 /**
7041  * i40e_probe - Device initialization routine
7042  * @pdev: PCI device information struct
7043  * @ent: entry in i40e_pci_tbl
7044  *
7045  * i40e_probe initializes a pf identified by a pci_dev structure.
7046  * The OS initialization, configuring of the pf private structure,
7047  * and a hardware reset occur.
7048  *
7049  * Returns 0 on success, negative on failure
7050  **/
7051 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7052 {
7053         struct i40e_driver_version dv;
7054         struct i40e_pf *pf;
7055         struct i40e_hw *hw;
7056         int err = 0;
7057         u32 len;
7058
7059         err = pci_enable_device_mem(pdev);
7060         if (err)
7061                 return err;
7062
7063         /* set up for high or low dma */
7064         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
7065                 /* coherent mask for the same size will always succeed if
7066                  * dma_set_mask does
7067                  */
7068                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
7069         } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
7070                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7071         } else {
7072                 dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
7073                 err = -EIO;
7074                 goto err_dma;
7075         }
7076
7077         /* set up pci connections */
7078         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
7079                                            IORESOURCE_MEM), i40e_driver_name);
7080         if (err) {
7081                 dev_info(&pdev->dev,
7082                          "pci_request_selected_regions failed %d\n", err);
7083                 goto err_pci_reg;
7084         }
7085
7086         pci_enable_pcie_error_reporting(pdev);
7087         pci_set_master(pdev);
7088
7089         /* Now that we have a PCI connection, we need to do the
7090          * low level device setup.  This is primarily setting up
7091          * the Admin Queue structures and then querying for the
7092          * device's current profile information.
7093          */
7094         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
7095         if (!pf) {
7096                 err = -ENOMEM;
7097                 goto err_pf_alloc;
7098         }
7099         pf->next_vsi = 0;
7100         pf->pdev = pdev;
7101         set_bit(__I40E_DOWN, &pf->state);
7102
7103         hw = &pf->hw;
7104         hw->back = pf;
7105         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
7106                               pci_resource_len(pdev, 0));
7107         if (!hw->hw_addr) {
7108                 err = -EIO;
7109                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
7110                          (unsigned int)pci_resource_start(pdev, 0),
7111                          (unsigned int)pci_resource_len(pdev, 0), err);
7112                 goto err_ioremap;
7113         }
7114         hw->vendor_id = pdev->vendor;
7115         hw->device_id = pdev->device;
7116         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
7117         hw->subsystem_vendor_id = pdev->subsystem_vendor;
7118         hw->subsystem_device_id = pdev->subsystem_device;
7119         hw->bus.device = PCI_SLOT(pdev->devfn);
7120         hw->bus.func = PCI_FUNC(pdev->devfn);
7121
7122         /* Reset here to make sure all is clean and to define PF 'n' */
7123         err = i40e_pf_reset(hw);
7124         if (err) {
7125                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
7126                 goto err_pf_reset;
7127         }
7128         pf->pfr_count++;
7129
7130         hw->aq.num_arq_entries = I40E_AQ_LEN;
7131         hw->aq.num_asq_entries = I40E_AQ_LEN;
7132         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7133         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7134         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
7135         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
7136                  "%s-pf%d:misc",
7137                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
7138
7139         err = i40e_init_shared_code(hw);
7140         if (err) {
7141                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
7142                 goto err_pf_reset;
7143         }
7144
7145         err = i40e_init_adminq(hw);
7146         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
7147         if (err) {
7148                 dev_info(&pdev->dev,
7149                          "init_adminq failed: %d expecting API %02x.%02x\n",
7150                          err,
7151                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
7152                 goto err_pf_reset;
7153         }
7154
7155         err = i40e_get_capabilities(pf);
7156         if (err)
7157                 goto err_adminq_setup;
7158
7159         err = i40e_sw_init(pf);
7160         if (err) {
7161                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
7162                 goto err_sw_init;
7163         }
7164
7165         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7166                                 hw->func_caps.num_rx_qp,
7167                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7168         if (err) {
7169                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
7170                 goto err_init_lan_hmc;
7171         }
7172
7173         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7174         if (err) {
7175                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
7176                 err = -ENOENT;
7177                 goto err_configure_lan_hmc;
7178         }
7179
7180         i40e_get_mac_addr(hw, hw->mac.addr);
7181         if (i40e_validate_mac_addr(hw->mac.addr)) {
7182                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
7183                 err = -EIO;
7184                 goto err_mac_addr;
7185         }
7186         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
7187         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
7188
7189         pci_set_drvdata(pdev, pf);
7190         pci_save_state(pdev);
7191
7192         /* set up periodic task facility */
7193         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
7194         pf->service_timer_period = HZ;
7195
7196         INIT_WORK(&pf->service_task, i40e_service_task);
7197         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7198         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
7199         pf->link_check_timeout = jiffies;
7200
7201         /* set up the main switch operations */
7202         i40e_determine_queue_usage(pf);
7203         i40e_init_interrupt_scheme(pf);
7204
7205         /* Set up the *vsi struct based on the number of VSIs in the HW,
7206          * and set up our local tracking of the MAIN PF vsi.
7207          */
7208         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
7209         pf->vsi = kzalloc(len, GFP_KERNEL);
7210         if (!pf->vsi) {
7211                 err = -ENOMEM;
7212                 goto err_switch_setup;
7213         }
7214
7215         err = i40e_setup_pf_switch(pf);
7216         if (err) {
7217                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
7218                 goto err_vsis;
7219         }
7220
7221         /* The main driver is (mostly) up and happy. We need to set this state
7222          * before setting up the misc vector or we get a race and the vector
7223          * ends up disabled forever.
7224          */
7225         clear_bit(__I40E_DOWN, &pf->state);
7226
7227         /* In case of MSIX we are going to setup the misc vector right here
7228          * to handle admin queue events etc. In case of legacy and MSI
7229          * the misc functionality and queue processing is combined in
7230          * the same vector and that gets setup at open.
7231          */
7232         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7233                 err = i40e_setup_misc_vector(pf);
7234                 if (err) {
7235                         dev_info(&pdev->dev,
7236                                  "setup of misc vector failed: %d\n", err);
7237                         goto err_vsis;
7238                 }
7239         }
7240
7241         /* prep for VF support */
7242         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7243             (pf->flags & I40E_FLAG_MSIX_ENABLED)) {
7244                 u32 val;
7245
7246                 /* disable link interrupts for VFs */
7247                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
7248                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
7249                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
7250                 i40e_flush(hw);
7251         }
7252
7253         i40e_dbg_pf_init(pf);
7254
7255         /* tell the firmware that we're starting */
7256         dv.major_version = DRV_VERSION_MAJOR;
7257         dv.minor_version = DRV_VERSION_MINOR;
7258         dv.build_version = DRV_VERSION_BUILD;
7259         dv.subbuild_version = 0;
7260         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
7261
7262         /* since everything's happy, start the service_task timer */
7263         mod_timer(&pf->service_timer,
7264                   round_jiffies(jiffies + pf->service_timer_period));
7265
7266         return 0;
7267
7268         /* Unwind what we've done if something failed in the setup */
7269 err_vsis:
7270         set_bit(__I40E_DOWN, &pf->state);
7271 err_switch_setup:
7272         i40e_clear_interrupt_scheme(pf);
7273         kfree(pf->vsi);
7274         del_timer_sync(&pf->service_timer);
7275 err_mac_addr:
7276 err_configure_lan_hmc:
7277         (void)i40e_shutdown_lan_hmc(hw);
7278 err_init_lan_hmc:
7279         kfree(pf->qp_pile);
7280         kfree(pf->irq_pile);
7281 err_sw_init:
7282 err_adminq_setup:
7283         (void)i40e_shutdown_adminq(hw);
7284 err_pf_reset:
7285         iounmap(hw->hw_addr);
7286 err_ioremap:
7287         kfree(pf);
7288 err_pf_alloc:
7289         pci_disable_pcie_error_reporting(pdev);
7290         pci_release_selected_regions(pdev,
7291                                      pci_select_bars(pdev, IORESOURCE_MEM));
7292 err_pci_reg:
7293 err_dma:
7294         pci_disable_device(pdev);
7295         return err;
7296 }
7297
7298 /**
7299  * i40e_remove - Device removal routine
7300  * @pdev: PCI device information struct
7301  *
7302  * i40e_remove is called by the PCI subsystem to alert the driver
7303  * that is should release a PCI device.  This could be caused by a
7304  * Hot-Plug event, or because the driver is going to be removed from
7305  * memory.
7306  **/
7307 static void i40e_remove(struct pci_dev *pdev)
7308 {
7309         struct i40e_pf *pf = pci_get_drvdata(pdev);
7310         i40e_status ret_code;
7311         u32 reg;
7312         int i;
7313
7314         i40e_dbg_pf_exit(pf);
7315
7316         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7317                 i40e_free_vfs(pf);
7318                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
7319         }
7320
7321         /* no more scheduling of any task */
7322         set_bit(__I40E_DOWN, &pf->state);
7323         del_timer_sync(&pf->service_timer);
7324         cancel_work_sync(&pf->service_task);
7325
7326         i40e_fdir_teardown(pf);
7327
7328         /* If there is a switch structure or any orphans, remove them.
7329          * This will leave only the PF's VSI remaining.
7330          */
7331         for (i = 0; i < I40E_MAX_VEB; i++) {
7332                 if (!pf->veb[i])
7333                         continue;
7334
7335                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
7336                     pf->veb[i]->uplink_seid == 0)
7337                         i40e_switch_branch_release(pf->veb[i]);
7338         }
7339
7340         /* Now we can shutdown the PF's VSI, just before we kill
7341          * adminq and hmc.
7342          */
7343         if (pf->vsi[pf->lan_vsi])
7344                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
7345
7346         i40e_stop_misc_vector(pf);
7347         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7348                 synchronize_irq(pf->msix_entries[0].vector);
7349                 free_irq(pf->msix_entries[0].vector, pf);
7350         }
7351
7352         /* shutdown and destroy the HMC */
7353         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
7354         if (ret_code)
7355                 dev_warn(&pdev->dev,
7356                          "Failed to destroy the HMC resources: %d\n", ret_code);
7357
7358         /* shutdown the adminq */
7359         i40e_aq_queue_shutdown(&pf->hw, true);
7360         ret_code = i40e_shutdown_adminq(&pf->hw);
7361         if (ret_code)
7362                 dev_warn(&pdev->dev,
7363                          "Failed to destroy the Admin Queue resources: %d\n",
7364                          ret_code);
7365
7366         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
7367         i40e_clear_interrupt_scheme(pf);
7368         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7369                 if (pf->vsi[i]) {
7370                         i40e_vsi_clear_rings(pf->vsi[i]);
7371                         i40e_vsi_clear(pf->vsi[i]);
7372                         pf->vsi[i] = NULL;
7373                 }
7374         }
7375
7376         for (i = 0; i < I40E_MAX_VEB; i++) {
7377                 kfree(pf->veb[i]);
7378                 pf->veb[i] = NULL;
7379         }
7380
7381         kfree(pf->qp_pile);
7382         kfree(pf->irq_pile);
7383         kfree(pf->sw_config);
7384         kfree(pf->vsi);
7385
7386         /* force a PF reset to clean anything leftover */
7387         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
7388         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
7389         i40e_flush(&pf->hw);
7390
7391         iounmap(pf->hw.hw_addr);
7392         kfree(pf);
7393         pci_release_selected_regions(pdev,
7394                                      pci_select_bars(pdev, IORESOURCE_MEM));
7395
7396         pci_disable_pcie_error_reporting(pdev);
7397         pci_disable_device(pdev);
7398 }
7399
7400 /**
7401  * i40e_pci_error_detected - warning that something funky happened in PCI land
7402  * @pdev: PCI device information struct
7403  *
7404  * Called to warn that something happened and the error handling steps
7405  * are in progress.  Allows the driver to quiesce things, be ready for
7406  * remediation.
7407  **/
7408 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
7409                                                 enum pci_channel_state error)
7410 {
7411         struct i40e_pf *pf = pci_get_drvdata(pdev);
7412
7413         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
7414
7415         /* shutdown all operations */
7416         i40e_pf_quiesce_all_vsi(pf);
7417
7418         /* Request a slot reset */
7419         return PCI_ERS_RESULT_NEED_RESET;
7420 }
7421
7422 /**
7423  * i40e_pci_error_slot_reset - a PCI slot reset just happened
7424  * @pdev: PCI device information struct
7425  *
7426  * Called to find if the driver can work with the device now that
7427  * the pci slot has been reset.  If a basic connection seems good
7428  * (registers are readable and have sane content) then return a
7429  * happy little PCI_ERS_RESULT_xxx.
7430  **/
7431 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
7432 {
7433         struct i40e_pf *pf = pci_get_drvdata(pdev);
7434         pci_ers_result_t result;
7435         int err;
7436         u32 reg;
7437
7438         dev_info(&pdev->dev, "%s\n", __func__);
7439         if (pci_enable_device_mem(pdev)) {
7440                 dev_info(&pdev->dev,
7441                          "Cannot re-enable PCI device after reset.\n");
7442                 result = PCI_ERS_RESULT_DISCONNECT;
7443         } else {
7444                 pci_set_master(pdev);
7445                 pci_restore_state(pdev);
7446                 pci_save_state(pdev);
7447                 pci_wake_from_d3(pdev, false);
7448
7449                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
7450                 if (reg == 0)
7451                         result = PCI_ERS_RESULT_RECOVERED;
7452                 else
7453                         result = PCI_ERS_RESULT_DISCONNECT;
7454         }
7455
7456         err = pci_cleanup_aer_uncorrect_error_status(pdev);
7457         if (err) {
7458                 dev_info(&pdev->dev,
7459                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
7460                          err);
7461                 /* non-fatal, continue */
7462         }
7463
7464         return result;
7465 }
7466
7467 /**
7468  * i40e_pci_error_resume - restart operations after PCI error recovery
7469  * @pdev: PCI device information struct
7470  *
7471  * Called to allow the driver to bring things back up after PCI error
7472  * and/or reset recovery has finished.
7473  **/
7474 static void i40e_pci_error_resume(struct pci_dev *pdev)
7475 {
7476         struct i40e_pf *pf = pci_get_drvdata(pdev);
7477
7478         dev_info(&pdev->dev, "%s\n", __func__);
7479         i40e_handle_reset_warning(pf);
7480 }
7481
7482 static const struct pci_error_handlers i40e_err_handler = {
7483         .error_detected = i40e_pci_error_detected,
7484         .slot_reset = i40e_pci_error_slot_reset,
7485         .resume = i40e_pci_error_resume,
7486 };
7487
7488 static struct pci_driver i40e_driver = {
7489         .name     = i40e_driver_name,
7490         .id_table = i40e_pci_tbl,
7491         .probe    = i40e_probe,
7492         .remove   = i40e_remove,
7493         .err_handler = &i40e_err_handler,
7494         .sriov_configure = i40e_pci_sriov_configure,
7495 };
7496
7497 /**
7498  * i40e_init_module - Driver registration routine
7499  *
7500  * i40e_init_module is the first routine called when the driver is
7501  * loaded. All it does is register with the PCI subsystem.
7502  **/
7503 static int __init i40e_init_module(void)
7504 {
7505         pr_info("%s: %s - version %s\n", i40e_driver_name,
7506                 i40e_driver_string, i40e_driver_version_str);
7507         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
7508         i40e_dbg_init();
7509         return pci_register_driver(&i40e_driver);
7510 }
7511 module_init(i40e_init_module);
7512
7513 /**
7514  * i40e_exit_module - Driver exit cleanup routine
7515  *
7516  * i40e_exit_module is called just before the driver is removed
7517  * from memory.
7518  **/
7519 static void __exit i40e_exit_module(void)
7520 {
7521         pci_unregister_driver(&i40e_driver);
7522         i40e_dbg_exit();
7523 }
7524 module_exit(i40e_exit_module);