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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 0
  41 #define DRV_VERSION_MINOR 4
  42 #define DRV_VERSION_BUILD 13
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         /* required last entry */
  78         {0, }
  79 };
  80 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  81
  82 #define I40E_MAX_VF_COUNT 128
  83 static int debug = -1;
  84 module_param(debug, int, 0);
  85 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  86
  87 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  88 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  89 MODULE_LICENSE("GPL");
  90 MODULE_VERSION(DRV_VERSION);
  91
  92 /**
  93  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  94  * @hw:   pointer to the HW structure
  95  * @mem:  ptr to mem struct to fill out
  96  * @size: size of memory requested
  97  * @alignment: what to align the allocation to
  98  **/
  99 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 100                             u64 size, u32 alignment)
 101 {
 102         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 103
 104         mem->size = ALIGN(size, alignment);
 105         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 106                                       &mem->pa, GFP_KERNEL);
 107         if (!mem->va)
 108                 return -ENOMEM;
 109
 110         return 0;
 111 }
 112
 113 /**
 114  * i40e_free_dma_mem_d - OS specific memory free for shared code
 115  * @hw:   pointer to the HW structure
 116  * @mem:  ptr to mem struct to free
 117  **/
 118 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 119 {
 120         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 121
 122         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 123         mem->va = NULL;
 124         mem->pa = 0;
 125         mem->size = 0;
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 132  * @hw:   pointer to the HW structure
 133  * @mem:  ptr to mem struct to fill out
 134  * @size: size of memory requested
 135  **/
 136 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 137                              u32 size)
 138 {
 139         mem->size = size;
 140         mem->va = kzalloc(size, GFP_KERNEL);
 141
 142         if (!mem->va)
 143                 return -ENOMEM;
 144
 145         return 0;
 146 }
 147
 148 /**
 149  * i40e_free_virt_mem_d - OS specific memory free for shared code
 150  * @hw:   pointer to the HW structure
 151  * @mem:  ptr to mem struct to free
 152  **/
 153 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 154 {
 155         /* it's ok to kfree a NULL pointer */
 156         kfree(mem->va);
 157         mem->va = NULL;
 158         mem->size = 0;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_get_lump - find a lump of free generic resource
 165  * @pf: board private structure
 166  * @pile: the pile of resource to search
 167  * @needed: the number of items needed
 168  * @id: an owner id to stick on the items assigned
 169  *
 170  * Returns the base item index of the lump, or negative for error
 171  *
 172  * The search_hint trick and lack of advanced fit-finding only work
 173  * because we're highly likely to have all the same size lump requests.
 174  * Linear search time and any fragmentation should be minimal.
 175  **/
 176 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 177                          u16 needed, u16 id)
 178 {
 179         int ret = -ENOMEM;
 180         int i, j;
 181
 182         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 183                 dev_info(&pf->pdev->dev,
 184                          "param err: pile=%p needed=%d id=0x%04x\n",
 185                          pile, needed, id);
 186                 return -EINVAL;
 187         }
 188
 189         /* start the linear search with an imperfect hint */
 190         i = pile->search_hint;
 191         while (i < pile->num_entries) {
 192                 /* skip already allocated entries */
 193                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 194                         i++;
 195                         continue;
 196                 }
 197
 198                 /* do we have enough in this lump? */
 199                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 200                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 201                                 break;
 202                 }
 203
 204                 if (j == needed) {
 205                         /* there was enough, so assign it to the requestor */
 206                         for (j = 0; j < needed; j++)
 207                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 208                         ret = i;
 209                         pile->search_hint = i + j;
 210                         break;
 211                 } else {
 212                         /* not enough, so skip over it and continue looking */
 213                         i += j;
 214                 }
 215         }
 216
 217         return ret;
 218 }
 219
 220 /**
 221  * i40e_put_lump - return a lump of generic resource
 222  * @pile: the pile of resource to search
 223  * @index: the base item index
 224  * @id: the owner id of the items assigned
 225  *
 226  * Returns the count of items in the lump
 227  **/
 228 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 229 {
 230         int valid_id = (id | I40E_PILE_VALID_BIT);
 231         int count = 0;
 232         int i;
 233
 234         if (!pile || index >= pile->num_entries)
 235                 return -EINVAL;
 236
 237         for (i = index;
 238              i < pile->num_entries && pile->list[i] == valid_id;
 239              i++) {
 240                 pile->list[i] = 0;
 241                 count++;
 242         }
 243
 244         if (count && index < pile->search_hint)
 245                 pile->search_hint = index;
 246
 247         return count;
 248 }
 249
 250 /**
 251  * i40e_service_event_schedule - Schedule the service task to wake up
 252  * @pf: board private structure
 253  *
 254  * If not already scheduled, this puts the task into the work queue
 255  **/
 256 static void i40e_service_event_schedule(struct i40e_pf *pf)
 257 {
 258         if (!test_bit(__I40E_DOWN, &pf->state) &&
 259             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 260             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 261                 schedule_work(&pf->service_task);
 262 }
 263
 264 /**
 265  * i40e_tx_timeout - Respond to a Tx Hang
 266  * @netdev: network interface device structure
 267  *
 268  * If any port has noticed a Tx timeout, it is likely that the whole
 269  * device is munged, not just the one netdev port, so go for the full
 270  * reset.
 271  **/
 272 static void i40e_tx_timeout(struct net_device *netdev)
 273 {
 274         struct i40e_netdev_priv *np = netdev_priv(netdev);
 275         struct i40e_vsi *vsi = np->vsi;
 276         struct i40e_pf *pf = vsi->back;
 277
 278         pf->tx_timeout_count++;
 279
 280         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 281                 pf->tx_timeout_recovery_level = 0;
 282         pf->tx_timeout_last_recovery = jiffies;
 283         netdev_info(netdev, "tx_timeout recovery level %d\n",
 284                     pf->tx_timeout_recovery_level);
 285
 286         switch (pf->tx_timeout_recovery_level) {
 287         case 0:
 288                 /* disable and re-enable queues for the VSI */
 289                 if (in_interrupt()) {
 290                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 291                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 292                 } else {
 293                         i40e_vsi_reinit_locked(vsi);
 294                 }
 295                 break;
 296         case 1:
 297                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 298                 break;
 299         case 2:
 300                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 301                 break;
 302         case 3:
 303                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 304                 break;
 305         default:
 306                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 307                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 308                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 309                 break;
 310         }
 311         i40e_service_event_schedule(pf);
 312         pf->tx_timeout_recovery_level++;
 313 }
 314
 315 /**
 316  * i40e_release_rx_desc - Store the new tail and head values
 317  * @rx_ring: ring to bump
 318  * @val: new head index
 319  **/
 320 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 321 {
 322         rx_ring->next_to_use = val;
 323
 324         /* Force memory writes to complete before letting h/w
 325          * know there are new descriptors to fetch.  (Only
 326          * applicable for weak-ordered memory model archs,
 327          * such as IA-64).
 328          */
 329         wmb();
 330         writel(val, rx_ring->tail);
 331 }
 332
 333 /**
 334  * i40e_get_vsi_stats_struct - Get System Network Statistics
 335  * @vsi: the VSI we care about
 336  *
 337  * Returns the address of the device statistics structure.
 338  * The statistics are actually updated from the service task.
 339  **/
 340 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 341 {
 342         return &vsi->net_stats;
 343 }
 344
 345 /**
 346  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 347  * @netdev: network interface device structure
 348  *
 349  * Returns the address of the device statistics structure.
 350  * The statistics are actually updated from the service task.
 351  **/
 352 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 353                                              struct net_device *netdev,
 354                                              struct rtnl_link_stats64 *stats)
 355 {
 356         struct i40e_netdev_priv *np = netdev_priv(netdev);
 357         struct i40e_ring *tx_ring, *rx_ring;
 358         struct i40e_vsi *vsi = np->vsi;
 359         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 360         int i;
 361
 362         if (test_bit(__I40E_DOWN, &vsi->state))
 363                 return stats;
 364
 365         if (!vsi->tx_rings)
 366                 return stats;
 367
 368         rcu_read_lock();
 369         for (i = 0; i < vsi->num_queue_pairs; i++) {
 370                 u64 bytes, packets;
 371                 unsigned int start;
 372
 373                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 374                 if (!tx_ring)
 375                         continue;
 376
 377                 do {
 378                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 379                         packets = tx_ring->stats.packets;
 380                         bytes   = tx_ring->stats.bytes;
 381                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 382
 383                 stats->tx_packets += packets;
 384                 stats->tx_bytes   += bytes;
 385                 rx_ring = &tx_ring[1];
 386
 387                 do {
 388                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 389                         packets = rx_ring->stats.packets;
 390                         bytes   = rx_ring->stats.bytes;
 391                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 392
 393                 stats->rx_packets += packets;
 394                 stats->rx_bytes   += bytes;
 395         }
 396         rcu_read_unlock();
 397
 398         /* following stats updated by i40e_watchdog_subtask() */
 399         stats->multicast        = vsi_stats->multicast;
 400         stats->tx_errors        = vsi_stats->tx_errors;
 401         stats->tx_dropped       = vsi_stats->tx_dropped;
 402         stats->rx_errors        = vsi_stats->rx_errors;
 403         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 404         stats->rx_length_errors = vsi_stats->rx_length_errors;
 405
 406         return stats;
 407 }
 408
 409 /**
 410  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 411  * @vsi: the VSI to have its stats reset
 412  **/
 413 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 414 {
 415         struct rtnl_link_stats64 *ns;
 416         int i;
 417
 418         if (!vsi)
 419                 return;
 420
 421         ns = i40e_get_vsi_stats_struct(vsi);
 422         memset(ns, 0, sizeof(*ns));
 423         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 424         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 425         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 426         if (vsi->rx_rings && vsi->rx_rings[0]) {
 427                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 428                         memset(&vsi->rx_rings[i]->stats, 0 ,
 429                                sizeof(vsi->rx_rings[i]->stats));
 430                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 431                                sizeof(vsi->rx_rings[i]->rx_stats));
 432                         memset(&vsi->tx_rings[i]->stats, 0 ,
 433                                sizeof(vsi->tx_rings[i]->stats));
 434                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 435                                sizeof(vsi->tx_rings[i]->tx_stats));
 436                 }
 437         }
 438         vsi->stat_offsets_loaded = false;
 439 }
 440
 441 /**
 442  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 443  * @pf: the PF to be reset
 444  **/
 445 void i40e_pf_reset_stats(struct i40e_pf *pf)
 446 {
 447         int i;
 448
 449         memset(&pf->stats, 0, sizeof(pf->stats));
 450         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 451         pf->stat_offsets_loaded = false;
 452
 453         for (i = 0; i < I40E_MAX_VEB; i++) {
 454                 if (pf->veb[i]) {
 455                         memset(&pf->veb[i]->stats, 0,
 456                                sizeof(pf->veb[i]->stats));
 457                         memset(&pf->veb[i]->stats_offsets, 0,
 458                                sizeof(pf->veb[i]->stats_offsets));
 459                         pf->veb[i]->stat_offsets_loaded = false;
 460                 }
 461         }
 462 }
 463
 464 /**
 465  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 466  * @hw: ptr to the hardware info
 467  * @hireg: the high 32 bit reg to read
 468  * @loreg: the low 32 bit reg to read
 469  * @offset_loaded: has the initial offset been loaded yet
 470  * @offset: ptr to current offset value
 471  * @stat: ptr to the stat
 472  *
 473  * Since the device stats are not reset at PFReset, they likely will not
 474  * be zeroed when the driver starts.  We'll save the first values read
 475  * and use them as offsets to be subtracted from the raw values in order
 476  * to report stats that count from zero.  In the process, we also manage
 477  * the potential roll-over.
 478  **/
 479 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 480                                bool offset_loaded, u64 *offset, u64 *stat)
 481 {
 482         u64 new_data;
 483
 484         if (hw->device_id == I40E_DEV_ID_QEMU) {
 485                 new_data = rd32(hw, loreg);
 486                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 487         } else {
 488                 new_data = rd64(hw, loreg);
 489         }
 490         if (!offset_loaded)
 491                 *offset = new_data;
 492         if (likely(new_data >= *offset))
 493                 *stat = new_data - *offset;
 494         else
 495                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 496         *stat &= 0xFFFFFFFFFFFFULL;
 497 }
 498
 499 /**
 500  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 501  * @hw: ptr to the hardware info
 502  * @reg: the hw reg to read
 503  * @offset_loaded: has the initial offset been loaded yet
 504  * @offset: ptr to current offset value
 505  * @stat: ptr to the stat
 506  **/
 507 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 508                                bool offset_loaded, u64 *offset, u64 *stat)
 509 {
 510         u32 new_data;
 511
 512         new_data = rd32(hw, reg);
 513         if (!offset_loaded)
 514                 *offset = new_data;
 515         if (likely(new_data >= *offset))
 516                 *stat = (u32)(new_data - *offset);
 517         else
 518                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 519 }
 520
 521 /**
 522  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 523  * @vsi: the VSI to be updated
 524  **/
 525 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 526 {
 527         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 528         struct i40e_pf *pf = vsi->back;
 529         struct i40e_hw *hw = &pf->hw;
 530         struct i40e_eth_stats *oes;
 531         struct i40e_eth_stats *es;     /* device's eth stats */
 532
 533         es = &vsi->eth_stats;
 534         oes = &vsi->eth_stats_offsets;
 535
 536         /* Gather up the stats that the hw collects */
 537         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 538                            vsi->stat_offsets_loaded,
 539                            &oes->tx_errors, &es->tx_errors);
 540         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 541                            vsi->stat_offsets_loaded,
 542                            &oes->rx_discards, &es->rx_discards);
 543         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 544                            vsi->stat_offsets_loaded,
 545                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 546         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 547                            vsi->stat_offsets_loaded,
 548                            &oes->tx_errors, &es->tx_errors);
 549
 550         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 551                            I40E_GLV_GORCL(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_bytes, &es->rx_bytes);
 554         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 555                            I40E_GLV_UPRCL(stat_idx),
 556                            vsi->stat_offsets_loaded,
 557                            &oes->rx_unicast, &es->rx_unicast);
 558         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 559                            I40E_GLV_MPRCL(stat_idx),
 560                            vsi->stat_offsets_loaded,
 561                            &oes->rx_multicast, &es->rx_multicast);
 562         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 563                            I40E_GLV_BPRCL(stat_idx),
 564                            vsi->stat_offsets_loaded,
 565                            &oes->rx_broadcast, &es->rx_broadcast);
 566
 567         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 568                            I40E_GLV_GOTCL(stat_idx),
 569                            vsi->stat_offsets_loaded,
 570                            &oes->tx_bytes, &es->tx_bytes);
 571         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 572                            I40E_GLV_UPTCL(stat_idx),
 573                            vsi->stat_offsets_loaded,
 574                            &oes->tx_unicast, &es->tx_unicast);
 575         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 576                            I40E_GLV_MPTCL(stat_idx),
 577                            vsi->stat_offsets_loaded,
 578                            &oes->tx_multicast, &es->tx_multicast);
 579         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 580                            I40E_GLV_BPTCL(stat_idx),
 581                            vsi->stat_offsets_loaded,
 582                            &oes->tx_broadcast, &es->tx_broadcast);
 583         vsi->stat_offsets_loaded = true;
 584 }
 585
 586 /**
 587  * i40e_update_veb_stats - Update Switch component statistics
 588  * @veb: the VEB being updated
 589  **/
 590 static void i40e_update_veb_stats(struct i40e_veb *veb)
 591 {
 592         struct i40e_pf *pf = veb->pf;
 593         struct i40e_hw *hw = &pf->hw;
 594         struct i40e_eth_stats *oes;
 595         struct i40e_eth_stats *es;     /* device's eth stats */
 596         int idx = 0;
 597
 598         idx = veb->stats_idx;
 599         es = &veb->stats;
 600         oes = &veb->stats_offsets;
 601
 602         /* Gather up the stats that the hw collects */
 603         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 604                            veb->stat_offsets_loaded,
 605                            &oes->tx_discards, &es->tx_discards);
 606         if (hw->revision_id > 0)
 607                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 608                                    veb->stat_offsets_loaded,
 609                                    &oes->rx_unknown_protocol,
 610                                    &es->rx_unknown_protocol);
 611         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 612                            veb->stat_offsets_loaded,
 613                            &oes->rx_bytes, &es->rx_bytes);
 614         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->rx_unicast, &es->rx_unicast);
 617         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 618                            veb->stat_offsets_loaded,
 619                            &oes->rx_multicast, &es->rx_multicast);
 620         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 621                            veb->stat_offsets_loaded,
 622                            &oes->rx_broadcast, &es->rx_broadcast);
 623
 624         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 625                            veb->stat_offsets_loaded,
 626                            &oes->tx_bytes, &es->tx_bytes);
 627         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 628                            veb->stat_offsets_loaded,
 629                            &oes->tx_unicast, &es->tx_unicast);
 630         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 631                            veb->stat_offsets_loaded,
 632                            &oes->tx_multicast, &es->tx_multicast);
 633         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 634                            veb->stat_offsets_loaded,
 635                            &oes->tx_broadcast, &es->tx_broadcast);
 636         veb->stat_offsets_loaded = true;
 637 }
 638
 639 /**
 640  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 641  * @pf: the corresponding PF
 642  *
 643  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 644  **/
 645 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 646 {
 647         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 648         struct i40e_hw_port_stats *nsd = &pf->stats;
 649         struct i40e_hw *hw = &pf->hw;
 650         u64 xoff = 0;
 651         u16 i, v;
 652
 653         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 654             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 655                 return;
 656
 657         xoff = nsd->link_xoff_rx;
 658         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 659                            pf->stat_offsets_loaded,
 660                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 661
 662         /* No new LFC xoff rx */
 663         if (!(nsd->link_xoff_rx - xoff))
 664                 return;
 665
 666         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 667         for (v = 0; v < pf->num_alloc_vsi; v++) {
 668                 struct i40e_vsi *vsi = pf->vsi[v];
 669
 670                 if (!vsi || !vsi->tx_rings[0])
 671                         continue;
 672
 673                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 674                         struct i40e_ring *ring = vsi->tx_rings[i];
 675                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 676                 }
 677         }
 678 }
 679
 680 /**
 681  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 682  * @pf: the corresponding PF
 683  *
 684  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 685  **/
 686 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 687 {
 688         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 689         struct i40e_hw_port_stats *nsd = &pf->stats;
 690         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 691         struct i40e_dcbx_config *dcb_cfg;
 692         struct i40e_hw *hw = &pf->hw;
 693         u16 i, v;
 694         u8 tc;
 695
 696         dcb_cfg = &hw->local_dcbx_config;
 697
 698         /* See if DCB enabled with PFC TC */
 699         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 700             !(dcb_cfg->pfc.pfcenable)) {
 701                 i40e_update_link_xoff_rx(pf);
 702                 return;
 703         }
 704
 705         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 706                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 707                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 708                                    pf->stat_offsets_loaded,
 709                                    &osd->priority_xoff_rx[i],
 710                                    &nsd->priority_xoff_rx[i]);
 711
 712                 /* No new PFC xoff rx */
 713                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 714                         continue;
 715                 /* Get the TC for given priority */
 716                 tc = dcb_cfg->etscfg.prioritytable[i];
 717                 xoff[tc] = true;
 718         }
 719
 720         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 721         for (v = 0; v < pf->num_alloc_vsi; v++) {
 722                 struct i40e_vsi *vsi = pf->vsi[v];
 723
 724                 if (!vsi || !vsi->tx_rings[0])
 725                         continue;
 726
 727                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 728                         struct i40e_ring *ring = vsi->tx_rings[i];
 729
 730                         tc = ring->dcb_tc;
 731                         if (xoff[tc])
 732                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 733                                           &ring->state);
 734                 }
 735         }
 736 }
 737
 738 /**
 739  * i40e_update_vsi_stats - Update the vsi statistics counters.
 740  * @vsi: the VSI to be updated
 741  *
 742  * There are a few instances where we store the same stat in a
 743  * couple of different structs.  This is partly because we have
 744  * the netdev stats that need to be filled out, which is slightly
 745  * different from the "eth_stats" defined by the chip and used in
 746  * VF communications.  We sort it out here.
 747  **/
 748 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 749 {
 750         struct i40e_pf *pf = vsi->back;
 751         struct rtnl_link_stats64 *ons;
 752         struct rtnl_link_stats64 *ns;   /* netdev stats */
 753         struct i40e_eth_stats *oes;
 754         struct i40e_eth_stats *es;     /* device's eth stats */
 755         u32 tx_restart, tx_busy;
 756         u32 rx_page, rx_buf;
 757         u64 rx_p, rx_b;
 758         u64 tx_p, tx_b;
 759         u16 q;
 760
 761         if (test_bit(__I40E_DOWN, &vsi->state) ||
 762             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 763                 return;
 764
 765         ns = i40e_get_vsi_stats_struct(vsi);
 766         ons = &vsi->net_stats_offsets;
 767         es = &vsi->eth_stats;
 768         oes = &vsi->eth_stats_offsets;
 769
 770         /* Gather up the netdev and vsi stats that the driver collects
 771          * on the fly during packet processing
 772          */
 773         rx_b = rx_p = 0;
 774         tx_b = tx_p = 0;
 775         tx_restart = tx_busy = 0;
 776         rx_page = 0;
 777         rx_buf = 0;
 778         rcu_read_lock();
 779         for (q = 0; q < vsi->num_queue_pairs; q++) {
 780                 struct i40e_ring *p;
 781                 u64 bytes, packets;
 782                 unsigned int start;
 783
 784                 /* locate Tx ring */
 785                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 786
 787                 do {
 788                         start = u64_stats_fetch_begin_irq(&p->syncp);
 789                         packets = p->stats.packets;
 790                         bytes = p->stats.bytes;
 791                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 792                 tx_b += bytes;
 793                 tx_p += packets;
 794                 tx_restart += p->tx_stats.restart_queue;
 795                 tx_busy += p->tx_stats.tx_busy;
 796
 797                 /* Rx queue is part of the same block as Tx queue */
 798                 p = &p[1];
 799                 do {
 800                         start = u64_stats_fetch_begin_irq(&p->syncp);
 801                         packets = p->stats.packets;
 802                         bytes = p->stats.bytes;
 803                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 804                 rx_b += bytes;
 805                 rx_p += packets;
 806                 rx_buf += p->rx_stats.alloc_buff_failed;
 807                 rx_page += p->rx_stats.alloc_page_failed;
 808         }
 809         rcu_read_unlock();
 810         vsi->tx_restart = tx_restart;
 811         vsi->tx_busy = tx_busy;
 812         vsi->rx_page_failed = rx_page;
 813         vsi->rx_buf_failed = rx_buf;
 814
 815         ns->rx_packets = rx_p;
 816         ns->rx_bytes = rx_b;
 817         ns->tx_packets = tx_p;
 818         ns->tx_bytes = tx_b;
 819
 820         /* update netdev stats from eth stats */
 821         i40e_update_eth_stats(vsi);
 822         ons->tx_errors = oes->tx_errors;
 823         ns->tx_errors = es->tx_errors;
 824         ons->multicast = oes->rx_multicast;
 825         ns->multicast = es->rx_multicast;
 826         ons->rx_dropped = oes->rx_discards;
 827         ns->rx_dropped = es->rx_discards;
 828         ons->tx_dropped = oes->tx_discards;
 829         ns->tx_dropped = es->tx_discards;
 830
 831         /* pull in a couple PF stats if this is the main vsi */
 832         if (vsi == pf->vsi[pf->lan_vsi]) {
 833                 ns->rx_crc_errors = pf->stats.crc_errors;
 834                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 835                 ns->rx_length_errors = pf->stats.rx_length_errors;
 836         }
 837 }
 838
 839 /**
 840  * i40e_update_pf_stats - Update the pf statistics counters.
 841  * @pf: the PF to be updated
 842  **/
 843 static void i40e_update_pf_stats(struct i40e_pf *pf)
 844 {
 845         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 846         struct i40e_hw_port_stats *nsd = &pf->stats;
 847         struct i40e_hw *hw = &pf->hw;
 848         u32 val;
 849         int i;
 850
 851         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 852                            I40E_GLPRT_GORCL(hw->port),
 853                            pf->stat_offsets_loaded,
 854                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 855         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 856                            I40E_GLPRT_GOTCL(hw->port),
 857                            pf->stat_offsets_loaded,
 858                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 859         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 860                            pf->stat_offsets_loaded,
 861                            &osd->eth.rx_discards,
 862                            &nsd->eth.rx_discards);
 863         i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 864                            pf->stat_offsets_loaded,
 865                            &osd->eth.tx_discards,
 866                            &nsd->eth.tx_discards);
 867
 868         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 869                            I40E_GLPRT_UPRCL(hw->port),
 870                            pf->stat_offsets_loaded,
 871                            &osd->eth.rx_unicast,
 872                            &nsd->eth.rx_unicast);
 873         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 874                            I40E_GLPRT_MPRCL(hw->port),
 875                            pf->stat_offsets_loaded,
 876                            &osd->eth.rx_multicast,
 877                            &nsd->eth.rx_multicast);
 878         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 879                            I40E_GLPRT_BPRCL(hw->port),
 880                            pf->stat_offsets_loaded,
 881                            &osd->eth.rx_broadcast,
 882                            &nsd->eth.rx_broadcast);
 883         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 884                            I40E_GLPRT_UPTCL(hw->port),
 885                            pf->stat_offsets_loaded,
 886                            &osd->eth.tx_unicast,
 887                            &nsd->eth.tx_unicast);
 888         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 889                            I40E_GLPRT_MPTCL(hw->port),
 890                            pf->stat_offsets_loaded,
 891                            &osd->eth.tx_multicast,
 892                            &nsd->eth.tx_multicast);
 893         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 894                            I40E_GLPRT_BPTCL(hw->port),
 895                            pf->stat_offsets_loaded,
 896                            &osd->eth.tx_broadcast,
 897                            &nsd->eth.tx_broadcast);
 898
 899         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 900                            pf->stat_offsets_loaded,
 901                            &osd->tx_dropped_link_down,
 902                            &nsd->tx_dropped_link_down);
 903
 904         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 905                            pf->stat_offsets_loaded,
 906                            &osd->crc_errors, &nsd->crc_errors);
 907
 908         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 909                            pf->stat_offsets_loaded,
 910                            &osd->illegal_bytes, &nsd->illegal_bytes);
 911
 912         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 913                            pf->stat_offsets_loaded,
 914                            &osd->mac_local_faults,
 915                            &nsd->mac_local_faults);
 916         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->mac_remote_faults,
 919                            &nsd->mac_remote_faults);
 920
 921         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 922                            pf->stat_offsets_loaded,
 923                            &osd->rx_length_errors,
 924                            &nsd->rx_length_errors);
 925
 926         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 927                            pf->stat_offsets_loaded,
 928                            &osd->link_xon_rx, &nsd->link_xon_rx);
 929         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 930                            pf->stat_offsets_loaded,
 931                            &osd->link_xon_tx, &nsd->link_xon_tx);
 932         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 933         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 936
 937         for (i = 0; i < 8; i++) {
 938                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 939                                    pf->stat_offsets_loaded,
 940                                    &osd->priority_xon_rx[i],
 941                                    &nsd->priority_xon_rx[i]);
 942                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 943                                    pf->stat_offsets_loaded,
 944                                    &osd->priority_xon_tx[i],
 945                                    &nsd->priority_xon_tx[i]);
 946                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 947                                    pf->stat_offsets_loaded,
 948                                    &osd->priority_xoff_tx[i],
 949                                    &nsd->priority_xoff_tx[i]);
 950                 i40e_stat_update32(hw,
 951                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 952                                    pf->stat_offsets_loaded,
 953                                    &osd->priority_xon_2_xoff[i],
 954                                    &nsd->priority_xon_2_xoff[i]);
 955         }
 956
 957         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 958                            I40E_GLPRT_PRC64L(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->rx_size_64, &nsd->rx_size_64);
 961         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 962                            I40E_GLPRT_PRC127L(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->rx_size_127, &nsd->rx_size_127);
 965         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 966                            I40E_GLPRT_PRC255L(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->rx_size_255, &nsd->rx_size_255);
 969         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 970                            I40E_GLPRT_PRC511L(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->rx_size_511, &nsd->rx_size_511);
 973         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 974                            I40E_GLPRT_PRC1023L(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->rx_size_1023, &nsd->rx_size_1023);
 977         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 978                            I40E_GLPRT_PRC1522L(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->rx_size_1522, &nsd->rx_size_1522);
 981         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 982                            I40E_GLPRT_PRC9522L(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->rx_size_big, &nsd->rx_size_big);
 985
 986         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 987                            I40E_GLPRT_PTC64L(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->tx_size_64, &nsd->tx_size_64);
 990         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 991                            I40E_GLPRT_PTC127L(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->tx_size_127, &nsd->tx_size_127);
 994         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 995                            I40E_GLPRT_PTC255L(hw->port),
 996                            pf->stat_offsets_loaded,
 997                            &osd->tx_size_255, &nsd->tx_size_255);
 998         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 999                            I40E_GLPRT_PTC511L(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->tx_size_511, &nsd->tx_size_511);
1002         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1003                            I40E_GLPRT_PTC1023L(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->tx_size_1023, &nsd->tx_size_1023);
1006         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1007                            I40E_GLPRT_PTC1522L(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->tx_size_1522, &nsd->tx_size_1522);
1010         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1011                            I40E_GLPRT_PTC9522L(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->tx_size_big, &nsd->tx_size_big);
1014
1015         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->rx_undersize, &nsd->rx_undersize);
1018         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1019                            pf->stat_offsets_loaded,
1020                            &osd->rx_fragments, &nsd->rx_fragments);
1021         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_oversize, &nsd->rx_oversize);
1024         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_jabber, &nsd->rx_jabber);
1027
1028         /* FDIR stats */
1029         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1030                            pf->stat_offsets_loaded,
1031                            &osd->fd_atr_match, &nsd->fd_atr_match);
1032         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1033                            pf->stat_offsets_loaded,
1034                            &osd->fd_sb_match, &nsd->fd_sb_match);
1035
1036         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1037         nsd->tx_lpi_status =
1038                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1039                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1040         nsd->rx_lpi_status =
1041                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1042                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1043         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1044                            pf->stat_offsets_loaded,
1045                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1046         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1049
1050         pf->stat_offsets_loaded = true;
1051 }
1052
1053 /**
1054  * i40e_update_stats - Update the various statistics counters.
1055  * @vsi: the VSI to be updated
1056  *
1057  * Update the various stats for this VSI and its related entities.
1058  **/
1059 void i40e_update_stats(struct i40e_vsi *vsi)
1060 {
1061         struct i40e_pf *pf = vsi->back;
1062
1063         if (vsi == pf->vsi[pf->lan_vsi])
1064                 i40e_update_pf_stats(pf);
1065
1066         i40e_update_vsi_stats(vsi);
1067 }
1068
1069 /**
1070  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1071  * @vsi: the VSI to be searched
1072  * @macaddr: the MAC address
1073  * @vlan: the vlan
1074  * @is_vf: make sure its a vf filter, else doesn't matter
1075  * @is_netdev: make sure its a netdev filter, else doesn't matter
1076  *
1077  * Returns ptr to the filter object or NULL
1078  **/
1079 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1080                                                 u8 *macaddr, s16 vlan,
1081                                                 bool is_vf, bool is_netdev)
1082 {
1083         struct i40e_mac_filter *f;
1084
1085         if (!vsi || !macaddr)
1086                 return NULL;
1087
1088         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1089                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1090                     (vlan == f->vlan)    &&
1091                     (!is_vf || f->is_vf) &&
1092                     (!is_netdev || f->is_netdev))
1093                         return f;
1094         }
1095         return NULL;
1096 }
1097
1098 /**
1099  * i40e_find_mac - Find a mac addr in the macvlan filters list
1100  * @vsi: the VSI to be searched
1101  * @macaddr: the MAC address we are searching for
1102  * @is_vf: make sure its a vf filter, else doesn't matter
1103  * @is_netdev: make sure its a netdev filter, else doesn't matter
1104  *
1105  * Returns the first filter with the provided MAC address or NULL if
1106  * MAC address was not found
1107  **/
1108 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1109                                       bool is_vf, bool is_netdev)
1110 {
1111         struct i40e_mac_filter *f;
1112
1113         if (!vsi || !macaddr)
1114                 return NULL;
1115
1116         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1117                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1118                     (!is_vf || f->is_vf) &&
1119                     (!is_netdev || f->is_netdev))
1120                         return f;
1121         }
1122         return NULL;
1123 }
1124
1125 /**
1126  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1127  * @vsi: the VSI to be searched
1128  *
1129  * Returns true if VSI is in vlan mode or false otherwise
1130  **/
1131 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1132 {
1133         struct i40e_mac_filter *f;
1134
1135         /* Only -1 for all the filters denotes not in vlan mode
1136          * so we have to go through all the list in order to make sure
1137          */
1138         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1139                 if (f->vlan >= 0)
1140                         return true;
1141         }
1142
1143         return false;
1144 }
1145
1146 /**
1147  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1148  * @vsi: the VSI to be searched
1149  * @macaddr: the mac address to be filtered
1150  * @is_vf: true if it is a vf
1151  * @is_netdev: true if it is a netdev
1152  *
1153  * Goes through all the macvlan filters and adds a
1154  * macvlan filter for each unique vlan that already exists
1155  *
1156  * Returns first filter found on success, else NULL
1157  **/
1158 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1159                                              bool is_vf, bool is_netdev)
1160 {
1161         struct i40e_mac_filter *f;
1162
1163         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1164                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1165                                       is_vf, is_netdev)) {
1166                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1167                                              is_vf, is_netdev))
1168                                 return NULL;
1169                 }
1170         }
1171
1172         return list_first_entry_or_null(&vsi->mac_filter_list,
1173                                         struct i40e_mac_filter, list);
1174 }
1175
1176 /**
1177  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1178  * @vsi: the PF Main VSI - inappropriate for any other VSI
1179  * @macaddr: the MAC address
1180  **/
1181 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1182 {
1183         struct i40e_aqc_remove_macvlan_element_data element;
1184         struct i40e_pf *pf = vsi->back;
1185         i40e_status aq_ret;
1186
1187         /* Only appropriate for the PF main VSI */
1188         if (vsi->type != I40E_VSI_MAIN)
1189                 return;
1190
1191         ether_addr_copy(element.mac_addr, macaddr);
1192         element.vlan_tag = 0;
1193         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1194                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1195         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1196         if (aq_ret)
1197                 dev_err(&pf->pdev->dev, "Could not remove default MAC-VLAN\n");
1198 }
1199
1200 /**
1201  * i40e_add_filter - Add a mac/vlan filter to the VSI
1202  * @vsi: the VSI to be searched
1203  * @macaddr: the MAC address
1204  * @vlan: the vlan
1205  * @is_vf: make sure its a vf filter, else doesn't matter
1206  * @is_netdev: make sure its a netdev filter, else doesn't matter
1207  *
1208  * Returns ptr to the filter object or NULL when no memory available.
1209  **/
1210 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1211                                         u8 *macaddr, s16 vlan,
1212                                         bool is_vf, bool is_netdev)
1213 {
1214         struct i40e_mac_filter *f;
1215
1216         if (!vsi || !macaddr)
1217                 return NULL;
1218
1219         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1220         if (!f) {
1221                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1222                 if (!f)
1223                         goto add_filter_out;
1224
1225                 ether_addr_copy(f->macaddr, macaddr);
1226                 f->vlan = vlan;
1227                 f->changed = true;
1228
1229                 INIT_LIST_HEAD(&f->list);
1230                 list_add(&f->list, &vsi->mac_filter_list);
1231         }
1232
1233         /* increment counter and add a new flag if needed */
1234         if (is_vf) {
1235                 if (!f->is_vf) {
1236                         f->is_vf = true;
1237                         f->counter++;
1238                 }
1239         } else if (is_netdev) {
1240                 if (!f->is_netdev) {
1241                         f->is_netdev = true;
1242                         f->counter++;
1243                 }
1244         } else {
1245                 f->counter++;
1246         }
1247
1248         /* changed tells sync_filters_subtask to
1249          * push the filter down to the firmware
1250          */
1251         if (f->changed) {
1252                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1253                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1254         }
1255
1256 add_filter_out:
1257         return f;
1258 }
1259
1260 /**
1261  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1262  * @vsi: the VSI to be searched
1263  * @macaddr: the MAC address
1264  * @vlan: the vlan
1265  * @is_vf: make sure it's a vf filter, else doesn't matter
1266  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1267  **/
1268 void i40e_del_filter(struct i40e_vsi *vsi,
1269                      u8 *macaddr, s16 vlan,
1270                      bool is_vf, bool is_netdev)
1271 {
1272         struct i40e_mac_filter *f;
1273
1274         if (!vsi || !macaddr)
1275                 return;
1276
1277         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1278         if (!f || f->counter == 0)
1279                 return;
1280
1281         if (is_vf) {
1282                 if (f->is_vf) {
1283                         f->is_vf = false;
1284                         f->counter--;
1285                 }
1286         } else if (is_netdev) {
1287                 if (f->is_netdev) {
1288                         f->is_netdev = false;
1289                         f->counter--;
1290                 }
1291         } else {
1292                 /* make sure we don't remove a filter in use by vf or netdev */
1293                 int min_f = 0;
1294                 min_f += (f->is_vf ? 1 : 0);
1295                 min_f += (f->is_netdev ? 1 : 0);
1296
1297                 if (f->counter > min_f)
1298                         f->counter--;
1299         }
1300
1301         /* counter == 0 tells sync_filters_subtask to
1302          * remove the filter from the firmware's list
1303          */
1304         if (f->counter == 0) {
1305                 f->changed = true;
1306                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1307                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1308         }
1309 }
1310
1311 /**
1312  * i40e_set_mac - NDO callback to set mac address
1313  * @netdev: network interface device structure
1314  * @p: pointer to an address structure
1315  *
1316  * Returns 0 on success, negative on failure
1317  **/
1318 static int i40e_set_mac(struct net_device *netdev, void *p)
1319 {
1320         struct i40e_netdev_priv *np = netdev_priv(netdev);
1321         struct i40e_vsi *vsi = np->vsi;
1322         struct sockaddr *addr = p;
1323         struct i40e_mac_filter *f;
1324
1325         if (!is_valid_ether_addr(addr->sa_data))
1326                 return -EADDRNOTAVAIL;
1327
1328         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1329
1330         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1331                 return 0;
1332
1333         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1334             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1335                 return -EADDRNOTAVAIL;
1336
1337         if (vsi->type == I40E_VSI_MAIN) {
1338                 i40e_status ret;
1339                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1340                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1341                                                 addr->sa_data, NULL);
1342                 if (ret) {
1343                         netdev_info(netdev,
1344                                     "Addr change for Main VSI failed: %d\n",
1345                                     ret);
1346                         return -EADDRNOTAVAIL;
1347                 }
1348
1349                 ether_addr_copy(vsi->back->hw.mac.addr, addr->sa_data);
1350         }
1351
1352         /* In order to be sure to not drop any packets, add the new address
1353          * then delete the old one.
1354          */
1355         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1356         if (!f)
1357                 return -ENOMEM;
1358
1359         i40e_sync_vsi_filters(vsi);
1360         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1361         i40e_sync_vsi_filters(vsi);
1362
1363         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1364
1365         return 0;
1366 }
1367
1368 /**
1369  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1370  * @vsi: the VSI being setup
1371  * @ctxt: VSI context structure
1372  * @enabled_tc: Enabled TCs bitmap
1373  * @is_add: True if called before Add VSI
1374  *
1375  * Setup VSI queue mapping for enabled traffic classes.
1376  **/
1377 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1378                                      struct i40e_vsi_context *ctxt,
1379                                      u8 enabled_tc,
1380                                      bool is_add)
1381 {
1382         struct i40e_pf *pf = vsi->back;
1383         u16 sections = 0;
1384         u8 netdev_tc = 0;
1385         u16 numtc = 0;
1386         u16 qcount;
1387         u8 offset;
1388         u16 qmap;
1389         int i;
1390         u16 num_tc_qps = 0;
1391
1392         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1393         offset = 0;
1394
1395         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1396                 /* Find numtc from enabled TC bitmap */
1397                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1398                         if (enabled_tc & (1 << i)) /* TC is enabled */
1399                                 numtc++;
1400                 }
1401                 if (!numtc) {
1402                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1403                         numtc = 1;
1404                 }
1405         } else {
1406                 /* At least TC0 is enabled in case of non-DCB case */
1407                 numtc = 1;
1408         }
1409
1410         vsi->tc_config.numtc = numtc;
1411         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1412         /* Number of queues per enabled TC */
1413         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1414         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1415
1416         /* Setup queue offset/count for all TCs for given VSI */
1417         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1418                 /* See if the given TC is enabled for the given VSI */
1419                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1420                         int pow, num_qps;
1421
1422                         switch (vsi->type) {
1423                         case I40E_VSI_MAIN:
1424                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1425                                 break;
1426                         case I40E_VSI_FDIR:
1427                         case I40E_VSI_SRIOV:
1428                         case I40E_VSI_VMDQ2:
1429                         default:
1430                                 qcount = num_tc_qps;
1431                                 WARN_ON(i != 0);
1432                                 break;
1433                         }
1434                         vsi->tc_config.tc_info[i].qoffset = offset;
1435                         vsi->tc_config.tc_info[i].qcount = qcount;
1436
1437                         /* find the power-of-2 of the number of queue pairs */
1438                         num_qps = qcount;
1439                         pow = 0;
1440                         while (num_qps && ((1 << pow) < qcount)) {
1441                                 pow++;
1442                                 num_qps >>= 1;
1443                         }
1444
1445                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1446                         qmap =
1447                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1448                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1449
1450                         offset += qcount;
1451                 } else {
1452                         /* TC is not enabled so set the offset to
1453                          * default queue and allocate one queue
1454                          * for the given TC.
1455                          */
1456                         vsi->tc_config.tc_info[i].qoffset = 0;
1457                         vsi->tc_config.tc_info[i].qcount = 1;
1458                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1459
1460                         qmap = 0;
1461                 }
1462                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1463         }
1464
1465         /* Set actual Tx/Rx queue pairs */
1466         vsi->num_queue_pairs = offset;
1467
1468         /* Scheduler section valid can only be set for ADD VSI */
1469         if (is_add) {
1470                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1471
1472                 ctxt->info.up_enable_bits = enabled_tc;
1473         }
1474         if (vsi->type == I40E_VSI_SRIOV) {
1475                 ctxt->info.mapping_flags |=
1476                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1477                 for (i = 0; i < vsi->num_queue_pairs; i++)
1478                         ctxt->info.queue_mapping[i] =
1479                                                cpu_to_le16(vsi->base_queue + i);
1480         } else {
1481                 ctxt->info.mapping_flags |=
1482                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1483                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1484         }
1485         ctxt->info.valid_sections |= cpu_to_le16(sections);
1486 }
1487
1488 /**
1489  * i40e_set_rx_mode - NDO callback to set the netdev filters
1490  * @netdev: network interface device structure
1491  **/
1492 static void i40e_set_rx_mode(struct net_device *netdev)
1493 {
1494         struct i40e_netdev_priv *np = netdev_priv(netdev);
1495         struct i40e_mac_filter *f, *ftmp;
1496         struct i40e_vsi *vsi = np->vsi;
1497         struct netdev_hw_addr *uca;
1498         struct netdev_hw_addr *mca;
1499         struct netdev_hw_addr *ha;
1500
1501         /* add addr if not already in the filter list */
1502         netdev_for_each_uc_addr(uca, netdev) {
1503                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1504                         if (i40e_is_vsi_in_vlan(vsi))
1505                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1506                                                      false, true);
1507                         else
1508                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1509                                                 false, true);
1510                 }
1511         }
1512
1513         netdev_for_each_mc_addr(mca, netdev) {
1514                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1515                         if (i40e_is_vsi_in_vlan(vsi))
1516                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1517                                                      false, true);
1518                         else
1519                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1520                                                 false, true);
1521                 }
1522         }
1523
1524         /* remove filter if not in netdev list */
1525         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1526                 bool found = false;
1527
1528                 if (!f->is_netdev)
1529                         continue;
1530
1531                 if (is_multicast_ether_addr(f->macaddr)) {
1532                         netdev_for_each_mc_addr(mca, netdev) {
1533                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1534                                         found = true;
1535                                         break;
1536                                 }
1537                         }
1538                 } else {
1539                         netdev_for_each_uc_addr(uca, netdev) {
1540                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1541                                         found = true;
1542                                         break;
1543                                 }
1544                         }
1545
1546                         for_each_dev_addr(netdev, ha) {
1547                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1548                                         found = true;
1549                                         break;
1550                                 }
1551                         }
1552                 }
1553                 if (!found)
1554                         i40e_del_filter(
1555                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1556         }
1557
1558         /* check for other flag changes */
1559         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1560                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1561                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1562         }
1563 }
1564
1565 /**
1566  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1567  * @vsi: ptr to the VSI
1568  *
1569  * Push any outstanding VSI filter changes through the AdminQ.
1570  *
1571  * Returns 0 or error value
1572  **/
1573 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1574 {
1575         struct i40e_mac_filter *f, *ftmp;
1576         bool promisc_forced_on = false;
1577         bool add_happened = false;
1578         int filter_list_len = 0;
1579         u32 changed_flags = 0;
1580         i40e_status aq_ret = 0;
1581         struct i40e_pf *pf;
1582         int num_add = 0;
1583         int num_del = 0;
1584         u16 cmd_flags;
1585
1586         /* empty array typed pointers, kcalloc later */
1587         struct i40e_aqc_add_macvlan_element_data *add_list;
1588         struct i40e_aqc_remove_macvlan_element_data *del_list;
1589
1590         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1591                 usleep_range(1000, 2000);
1592         pf = vsi->back;
1593
1594         if (vsi->netdev) {
1595                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1596                 vsi->current_netdev_flags = vsi->netdev->flags;
1597         }
1598
1599         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1600                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1601
1602                 filter_list_len = pf->hw.aq.asq_buf_size /
1603                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1604                 del_list = kcalloc(filter_list_len,
1605                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1606                             GFP_KERNEL);
1607                 if (!del_list)
1608                         return -ENOMEM;
1609
1610                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1611                         if (!f->changed)
1612                                 continue;
1613
1614                         if (f->counter != 0)
1615                                 continue;
1616                         f->changed = false;
1617                         cmd_flags = 0;
1618
1619                         /* add to delete list */
1620                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1621                         del_list[num_del].vlan_tag =
1622                                 cpu_to_le16((u16)(f->vlan ==
1623                                             I40E_VLAN_ANY ? 0 : f->vlan));
1624
1625                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1626                         del_list[num_del].flags = cmd_flags;
1627                         num_del++;
1628
1629                         /* unlink from filter list */
1630                         list_del(&f->list);
1631                         kfree(f);
1632
1633                         /* flush a full buffer */
1634                         if (num_del == filter_list_len) {
1635                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1636                                             vsi->seid, del_list, num_del,
1637                                             NULL);
1638                                 num_del = 0;
1639                                 memset(del_list, 0, sizeof(*del_list));
1640
1641                                 if (aq_ret &&
1642                                     pf->hw.aq.asq_last_status !=
1643                                                               I40E_AQ_RC_ENOENT)
1644                                         dev_info(&pf->pdev->dev,
1645                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1646                                                  aq_ret,
1647                                                  pf->hw.aq.asq_last_status);
1648                         }
1649                 }
1650                 if (num_del) {
1651                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1652                                                      del_list, num_del, NULL);
1653                         num_del = 0;
1654
1655                         if (aq_ret &&
1656                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1657                                 dev_info(&pf->pdev->dev,
1658                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1659                                          aq_ret, pf->hw.aq.asq_last_status);
1660                 }
1661
1662                 kfree(del_list);
1663                 del_list = NULL;
1664
1665                 /* do all the adds now */
1666                 filter_list_len = pf->hw.aq.asq_buf_size /
1667                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1668                 add_list = kcalloc(filter_list_len,
1669                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1670                                GFP_KERNEL);
1671                 if (!add_list)
1672                         return -ENOMEM;
1673
1674                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1675                         if (!f->changed)
1676                                 continue;
1677
1678                         if (f->counter == 0)
1679                                 continue;
1680                         f->changed = false;
1681                         add_happened = true;
1682                         cmd_flags = 0;
1683
1684                         /* add to add array */
1685                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1686                         add_list[num_add].vlan_tag =
1687                                 cpu_to_le16(
1688                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1689                         add_list[num_add].queue_number = 0;
1690
1691                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1692                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1693                         num_add++;
1694
1695                         /* flush a full buffer */
1696                         if (num_add == filter_list_len) {
1697                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1698                                                              add_list, num_add,
1699                                                              NULL);
1700                                 num_add = 0;
1701
1702                                 if (aq_ret)
1703                                         break;
1704                                 memset(add_list, 0, sizeof(*add_list));
1705                         }
1706                 }
1707                 if (num_add) {
1708                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1709                                                      add_list, num_add, NULL);
1710                         num_add = 0;
1711                 }
1712                 kfree(add_list);
1713                 add_list = NULL;
1714
1715                 if (add_happened && (!aq_ret)) {
1716                         /* do nothing */;
1717                 } else if (add_happened && (aq_ret)) {
1718                         dev_info(&pf->pdev->dev,
1719                                  "add filter failed, err %d, aq_err %d\n",
1720                                  aq_ret, pf->hw.aq.asq_last_status);
1721                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1722                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1723                                       &vsi->state)) {
1724                                 promisc_forced_on = true;
1725                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1726                                         &vsi->state);
1727                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1728                         }
1729                 }
1730         }
1731
1732         /* check for changes in promiscuous modes */
1733         if (changed_flags & IFF_ALLMULTI) {
1734                 bool cur_multipromisc;
1735                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1736                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1737                                                                vsi->seid,
1738                                                                cur_multipromisc,
1739                                                                NULL);
1740                 if (aq_ret)
1741                         dev_info(&pf->pdev->dev,
1742                                  "set multi promisc failed, err %d, aq_err %d\n",
1743                                  aq_ret, pf->hw.aq.asq_last_status);
1744         }
1745         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1746                 bool cur_promisc;
1747                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1748                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1749                                         &vsi->state));
1750                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1751                                                              vsi->seid,
1752                                                              cur_promisc, NULL);
1753                 if (aq_ret)
1754                         dev_info(&pf->pdev->dev,
1755                                  "set uni promisc failed, err %d, aq_err %d\n",
1756                                  aq_ret, pf->hw.aq.asq_last_status);
1757                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1758                                                    vsi->seid,
1759                                                    cur_promisc, NULL);
1760                 if (aq_ret)
1761                         dev_info(&pf->pdev->dev,
1762                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1763                                  aq_ret, pf->hw.aq.asq_last_status);
1764         }
1765
1766         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1767         return 0;
1768 }
1769
1770 /**
1771  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1772  * @pf: board private structure
1773  **/
1774 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1775 {
1776         int v;
1777
1778         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1779                 return;
1780         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1781
1782         for (v = 0; v < pf->num_alloc_vsi; v++) {
1783                 if (pf->vsi[v] &&
1784                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1785                         i40e_sync_vsi_filters(pf->vsi[v]);
1786         }
1787 }
1788
1789 /**
1790  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1791  * @netdev: network interface device structure
1792  * @new_mtu: new value for maximum frame size
1793  *
1794  * Returns 0 on success, negative on failure
1795  **/
1796 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1797 {
1798         struct i40e_netdev_priv *np = netdev_priv(netdev);
1799         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1800         struct i40e_vsi *vsi = np->vsi;
1801
1802         /* MTU < 68 is an error and causes problems on some kernels */
1803         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1804                 return -EINVAL;
1805
1806         netdev_info(netdev, "changing MTU from %d to %d\n",
1807                     netdev->mtu, new_mtu);
1808         netdev->mtu = new_mtu;
1809         if (netif_running(netdev))
1810                 i40e_vsi_reinit_locked(vsi);
1811
1812         return 0;
1813 }
1814
1815 /**
1816  * i40e_ioctl - Access the hwtstamp interface
1817  * @netdev: network interface device structure
1818  * @ifr: interface request data
1819  * @cmd: ioctl command
1820  **/
1821 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1822 {
1823         struct i40e_netdev_priv *np = netdev_priv(netdev);
1824         struct i40e_pf *pf = np->vsi->back;
1825
1826         switch (cmd) {
1827         case SIOCGHWTSTAMP:
1828                 return i40e_ptp_get_ts_config(pf, ifr);
1829         case SIOCSHWTSTAMP:
1830                 return i40e_ptp_set_ts_config(pf, ifr);
1831         default:
1832                 return -EOPNOTSUPP;
1833         }
1834 }
1835
1836 /**
1837  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1838  * @vsi: the vsi being adjusted
1839  **/
1840 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1841 {
1842         struct i40e_vsi_context ctxt;
1843         i40e_status ret;
1844
1845         if ((vsi->info.valid_sections &
1846              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1847             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1848                 return;  /* already enabled */
1849
1850         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1851         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1852                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1853
1854         ctxt.seid = vsi->seid;
1855         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1856         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1857         if (ret) {
1858                 dev_info(&vsi->back->pdev->dev,
1859                          "%s: update vsi failed, aq_err=%d\n",
1860                          __func__, vsi->back->hw.aq.asq_last_status);
1861         }
1862 }
1863
1864 /**
1865  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1866  * @vsi: the vsi being adjusted
1867  **/
1868 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1869 {
1870         struct i40e_vsi_context ctxt;
1871         i40e_status ret;
1872
1873         if ((vsi->info.valid_sections &
1874              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1875             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1876              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1877                 return;  /* already disabled */
1878
1879         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1880         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1881                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1882
1883         ctxt.seid = vsi->seid;
1884         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1885         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1886         if (ret) {
1887                 dev_info(&vsi->back->pdev->dev,
1888                          "%s: update vsi failed, aq_err=%d\n",
1889                          __func__, vsi->back->hw.aq.asq_last_status);
1890         }
1891 }
1892
1893 /**
1894  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1895  * @netdev: network interface to be adjusted
1896  * @features: netdev features to test if VLAN offload is enabled or not
1897  **/
1898 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1899 {
1900         struct i40e_netdev_priv *np = netdev_priv(netdev);
1901         struct i40e_vsi *vsi = np->vsi;
1902
1903         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1904                 i40e_vlan_stripping_enable(vsi);
1905         else
1906                 i40e_vlan_stripping_disable(vsi);
1907 }
1908
1909 /**
1910  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1911  * @vsi: the vsi being configured
1912  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1913  **/
1914 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1915 {
1916         struct i40e_mac_filter *f, *add_f;
1917         bool is_netdev, is_vf;
1918
1919         is_vf = (vsi->type == I40E_VSI_SRIOV);
1920         is_netdev = !!(vsi->netdev);
1921
1922         if (is_netdev) {
1923                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1924                                         is_vf, is_netdev);
1925                 if (!add_f) {
1926                         dev_info(&vsi->back->pdev->dev,
1927                                  "Could not add vlan filter %d for %pM\n",
1928                                  vid, vsi->netdev->dev_addr);
1929                         return -ENOMEM;
1930                 }
1931         }
1932
1933         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1934                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1935                 if (!add_f) {
1936                         dev_info(&vsi->back->pdev->dev,
1937                                  "Could not add vlan filter %d for %pM\n",
1938                                  vid, f->macaddr);
1939                         return -ENOMEM;
1940                 }
1941         }
1942
1943         /* Now if we add a vlan tag, make sure to check if it is the first
1944          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1945          * with 0, so we now accept untagged and specified tagged traffic
1946          * (and not any taged and untagged)
1947          */
1948         if (vid > 0) {
1949                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1950                                                   I40E_VLAN_ANY,
1951                                                   is_vf, is_netdev)) {
1952                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1953                                         I40E_VLAN_ANY, is_vf, is_netdev);
1954                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1955                                                 is_vf, is_netdev);
1956                         if (!add_f) {
1957                                 dev_info(&vsi->back->pdev->dev,
1958                                          "Could not add filter 0 for %pM\n",
1959                                          vsi->netdev->dev_addr);
1960                                 return -ENOMEM;
1961                         }
1962                 }
1963         }
1964
1965         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
1966         if (vid > 0 && !vsi->info.pvid) {
1967                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1968                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1969                                              is_vf, is_netdev)) {
1970                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1971                                                 is_vf, is_netdev);
1972                                 add_f = i40e_add_filter(vsi, f->macaddr,
1973                                                         0, is_vf, is_netdev);
1974                                 if (!add_f) {
1975                                         dev_info(&vsi->back->pdev->dev,
1976                                                  "Could not add filter 0 for %pM\n",
1977                                                  f->macaddr);
1978                                         return -ENOMEM;
1979                                 }
1980                         }
1981                 }
1982         }
1983
1984         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1985             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1986                 return 0;
1987
1988         return i40e_sync_vsi_filters(vsi);
1989 }
1990
1991 /**
1992  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1993  * @vsi: the vsi being configured
1994  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1995  *
1996  * Return: 0 on success or negative otherwise
1997  **/
1998 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1999 {
2000         struct net_device *netdev = vsi->netdev;
2001         struct i40e_mac_filter *f, *add_f;
2002         bool is_vf, is_netdev;
2003         int filter_count = 0;
2004
2005         is_vf = (vsi->type == I40E_VSI_SRIOV);
2006         is_netdev = !!(netdev);
2007
2008         if (is_netdev)
2009                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2010
2011         list_for_each_entry(f, &vsi->mac_filter_list, list)
2012                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2013
2014         /* go through all the filters for this VSI and if there is only
2015          * vid == 0 it means there are no other filters, so vid 0 must
2016          * be replaced with -1. This signifies that we should from now
2017          * on accept any traffic (with any tag present, or untagged)
2018          */
2019         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2020                 if (is_netdev) {
2021                         if (f->vlan &&
2022                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2023                                 filter_count++;
2024                 }
2025
2026                 if (f->vlan)
2027                         filter_count++;
2028         }
2029
2030         if (!filter_count && is_netdev) {
2031                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2032                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2033                                     is_vf, is_netdev);
2034                 if (!f) {
2035                         dev_info(&vsi->back->pdev->dev,
2036                                  "Could not add filter %d for %pM\n",
2037                                  I40E_VLAN_ANY, netdev->dev_addr);
2038                         return -ENOMEM;
2039                 }
2040         }
2041
2042         if (!filter_count) {
2043                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2045                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2046                                             is_vf, is_netdev);
2047                         if (!add_f) {
2048                                 dev_info(&vsi->back->pdev->dev,
2049                                          "Could not add filter %d for %pM\n",
2050                                          I40E_VLAN_ANY, f->macaddr);
2051                                 return -ENOMEM;
2052                         }
2053                 }
2054         }
2055
2056         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2057             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2058                 return 0;
2059
2060         return i40e_sync_vsi_filters(vsi);
2061 }
2062
2063 /**
2064  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2065  * @netdev: network interface to be adjusted
2066  * @vid: vlan id to be added
2067  *
2068  * net_device_ops implementation for adding vlan ids
2069  **/
2070 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2071                                 __always_unused __be16 proto, u16 vid)
2072 {
2073         struct i40e_netdev_priv *np = netdev_priv(netdev);
2074         struct i40e_vsi *vsi = np->vsi;
2075         int ret = 0;
2076
2077         if (vid > 4095)
2078                 return -EINVAL;
2079
2080         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2081
2082         /* If the network stack called us with vid = 0 then
2083          * it is asking to receive priority tagged packets with
2084          * vlan id 0.  Our HW receives them by default when configured
2085          * to receive untagged packets so there is no need to add an
2086          * extra filter for vlan 0 tagged packets.
2087          */
2088         if (vid)
2089                 ret = i40e_vsi_add_vlan(vsi, vid);
2090
2091         if (!ret && (vid < VLAN_N_VID))
2092                 set_bit(vid, vsi->active_vlans);
2093
2094         return ret;
2095 }
2096
2097 /**
2098  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2099  * @netdev: network interface to be adjusted
2100  * @vid: vlan id to be removed
2101  *
2102  * net_device_ops implementation for removing vlan ids
2103  **/
2104 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2105                                  __always_unused __be16 proto, u16 vid)
2106 {
2107         struct i40e_netdev_priv *np = netdev_priv(netdev);
2108         struct i40e_vsi *vsi = np->vsi;
2109
2110         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2111
2112         /* return code is ignored as there is nothing a user
2113          * can do about failure to remove and a log message was
2114          * already printed from the other function
2115          */
2116         i40e_vsi_kill_vlan(vsi, vid);
2117
2118         clear_bit(vid, vsi->active_vlans);
2119
2120         return 0;
2121 }
2122
2123 /**
2124  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2125  * @vsi: the vsi being brought back up
2126  **/
2127 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2128 {
2129         u16 vid;
2130
2131         if (!vsi->netdev)
2132                 return;
2133
2134         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2135
2136         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2137                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2138                                      vid);
2139 }
2140
2141 /**
2142  * i40e_vsi_add_pvid - Add pvid for the VSI
2143  * @vsi: the vsi being adjusted
2144  * @vid: the vlan id to set as a PVID
2145  **/
2146 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2147 {
2148         struct i40e_vsi_context ctxt;
2149         i40e_status aq_ret;
2150
2151         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2152         vsi->info.pvid = cpu_to_le16(vid);
2153         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2154                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2155                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2156
2157         ctxt.seid = vsi->seid;
2158         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2159         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2160         if (aq_ret) {
2161                 dev_info(&vsi->back->pdev->dev,
2162                          "%s: update vsi failed, aq_err=%d\n",
2163                          __func__, vsi->back->hw.aq.asq_last_status);
2164                 return -ENOENT;
2165         }
2166
2167         return 0;
2168 }
2169
2170 /**
2171  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2172  * @vsi: the vsi being adjusted
2173  *
2174  * Just use the vlan_rx_register() service to put it back to normal
2175  **/
2176 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2177 {
2178         i40e_vlan_stripping_disable(vsi);
2179
2180         vsi->info.pvid = 0;
2181 }
2182
2183 /**
2184  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2185  * @vsi: ptr to the VSI
2186  *
2187  * If this function returns with an error, then it's possible one or
2188  * more of the rings is populated (while the rest are not).  It is the
2189  * callers duty to clean those orphaned rings.
2190  *
2191  * Return 0 on success, negative on failure
2192  **/
2193 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2194 {
2195         int i, err = 0;
2196
2197         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2198                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2199
2200         return err;
2201 }
2202
2203 /**
2204  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2205  * @vsi: ptr to the VSI
2206  *
2207  * Free VSI's transmit software resources
2208  **/
2209 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2210 {
2211         int i;
2212
2213         if (!vsi->tx_rings)
2214                 return;
2215
2216         for (i = 0; i < vsi->num_queue_pairs; i++)
2217                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2218                         i40e_free_tx_resources(vsi->tx_rings[i]);
2219 }
2220
2221 /**
2222  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2223  * @vsi: ptr to the VSI
2224  *
2225  * If this function returns with an error, then it's possible one or
2226  * more of the rings is populated (while the rest are not).  It is the
2227  * callers duty to clean those orphaned rings.
2228  *
2229  * Return 0 on success, negative on failure
2230  **/
2231 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2232 {
2233         int i, err = 0;
2234
2235         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2236                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2237         return err;
2238 }
2239
2240 /**
2241  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2242  * @vsi: ptr to the VSI
2243  *
2244  * Free all receive software resources
2245  **/
2246 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2247 {
2248         int i;
2249
2250         if (!vsi->rx_rings)
2251                 return;
2252
2253         for (i = 0; i < vsi->num_queue_pairs; i++)
2254                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2255                         i40e_free_rx_resources(vsi->rx_rings[i]);
2256 }
2257
2258 /**
2259  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2260  * @ring: The Tx ring to configure
2261  *
2262  * Configure the Tx descriptor ring in the HMC context.
2263  **/
2264 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2265 {
2266         struct i40e_vsi *vsi = ring->vsi;
2267         u16 pf_q = vsi->base_queue + ring->queue_index;
2268         struct i40e_hw *hw = &vsi->back->hw;
2269         struct i40e_hmc_obj_txq tx_ctx;
2270         i40e_status err = 0;
2271         u32 qtx_ctl = 0;
2272
2273         /* some ATR related tx ring init */
2274         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2275                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2276                 ring->atr_count = 0;
2277         } else {
2278                 ring->atr_sample_rate = 0;
2279         }
2280
2281         /* initialize XPS */
2282         if (ring->q_vector && ring->netdev &&
2283             vsi->tc_config.numtc <= 1 &&
2284             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2285                 netif_set_xps_queue(ring->netdev,
2286                                     &ring->q_vector->affinity_mask,
2287                                     ring->queue_index);
2288
2289         /* clear the context structure first */
2290         memset(&tx_ctx, 0, sizeof(tx_ctx));
2291
2292         tx_ctx.new_context = 1;
2293         tx_ctx.base = (ring->dma / 128);
2294         tx_ctx.qlen = ring->count;
2295         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2296                                                I40E_FLAG_FD_ATR_ENABLED));
2297         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2298         /* FDIR VSI tx ring can still use RS bit and writebacks */
2299         if (vsi->type != I40E_VSI_FDIR)
2300                 tx_ctx.head_wb_ena = 1;
2301         tx_ctx.head_wb_addr = ring->dma +
2302                               (ring->count * sizeof(struct i40e_tx_desc));
2303
2304         /* As part of VSI creation/update, FW allocates certain
2305          * Tx arbitration queue sets for each TC enabled for
2306          * the VSI. The FW returns the handles to these queue
2307          * sets as part of the response buffer to Add VSI,
2308          * Update VSI, etc. AQ commands. It is expected that
2309          * these queue set handles be associated with the Tx
2310          * queues by the driver as part of the TX queue context
2311          * initialization. This has to be done regardless of
2312          * DCB as by default everything is mapped to TC0.
2313          */
2314         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2315         tx_ctx.rdylist_act = 0;
2316
2317         /* clear the context in the HMC */
2318         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2319         if (err) {
2320                 dev_info(&vsi->back->pdev->dev,
2321                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2322                          ring->queue_index, pf_q, err);
2323                 return -ENOMEM;
2324         }
2325
2326         /* set the context in the HMC */
2327         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2328         if (err) {
2329                 dev_info(&vsi->back->pdev->dev,
2330                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2331                          ring->queue_index, pf_q, err);
2332                 return -ENOMEM;
2333         }
2334
2335         /* Now associate this queue with this PCI function */
2336         if (vsi->type == I40E_VSI_VMDQ2)
2337                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2338         else
2339                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2340         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2341                     I40E_QTX_CTL_PF_INDX_MASK);
2342         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2343         i40e_flush(hw);
2344
2345         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2346
2347         /* cache tail off for easier writes later */
2348         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2349
2350         return 0;
2351 }
2352
2353 /**
2354  * i40e_configure_rx_ring - Configure a receive ring context
2355  * @ring: The Rx ring to configure
2356  *
2357  * Configure the Rx descriptor ring in the HMC context.
2358  **/
2359 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2360 {
2361         struct i40e_vsi *vsi = ring->vsi;
2362         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2363         u16 pf_q = vsi->base_queue + ring->queue_index;
2364         struct i40e_hw *hw = &vsi->back->hw;
2365         struct i40e_hmc_obj_rxq rx_ctx;
2366         i40e_status err = 0;
2367
2368         ring->state = 0;
2369
2370         /* clear the context structure first */
2371         memset(&rx_ctx, 0, sizeof(rx_ctx));
2372
2373         ring->rx_buf_len = vsi->rx_buf_len;
2374         ring->rx_hdr_len = vsi->rx_hdr_len;
2375
2376         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2377         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2378
2379         rx_ctx.base = (ring->dma / 128);
2380         rx_ctx.qlen = ring->count;
2381
2382         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2383                 set_ring_16byte_desc_enabled(ring);
2384                 rx_ctx.dsize = 0;
2385         } else {
2386                 rx_ctx.dsize = 1;
2387         }
2388
2389         rx_ctx.dtype = vsi->dtype;
2390         if (vsi->dtype) {
2391                 set_ring_ps_enabled(ring);
2392                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2393                                   I40E_RX_SPLIT_IP      |
2394                                   I40E_RX_SPLIT_TCP_UDP |
2395                                   I40E_RX_SPLIT_SCTP;
2396         } else {
2397                 rx_ctx.hsplit_0 = 0;
2398         }
2399
2400         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2401                                   (chain_len * ring->rx_buf_len));
2402         rx_ctx.tphrdesc_ena = 1;
2403         rx_ctx.tphwdesc_ena = 1;
2404         rx_ctx.tphdata_ena = 1;
2405         rx_ctx.tphhead_ena = 1;
2406         if (hw->revision_id == 0)
2407                 rx_ctx.lrxqthresh = 0;
2408         else
2409                 rx_ctx.lrxqthresh = 2;
2410         rx_ctx.crcstrip = 1;
2411         rx_ctx.l2tsel = 1;
2412         rx_ctx.showiv = 1;
2413         /* set the prefena field to 1 because the manual says to */
2414         rx_ctx.prefena = 1;
2415
2416         /* clear the context in the HMC */
2417         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2418         if (err) {
2419                 dev_info(&vsi->back->pdev->dev,
2420                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2421                          ring->queue_index, pf_q, err);
2422                 return -ENOMEM;
2423         }
2424
2425         /* set the context in the HMC */
2426         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2427         if (err) {
2428                 dev_info(&vsi->back->pdev->dev,
2429                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2430                          ring->queue_index, pf_q, err);
2431                 return -ENOMEM;
2432         }
2433
2434         /* cache tail for quicker writes, and clear the reg before use */
2435         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2436         writel(0, ring->tail);
2437
2438         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2439
2440         return 0;
2441 }
2442
2443 /**
2444  * i40e_vsi_configure_tx - Configure the VSI for Tx
2445  * @vsi: VSI structure describing this set of rings and resources
2446  *
2447  * Configure the Tx VSI for operation.
2448  **/
2449 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2450 {
2451         int err = 0;
2452         u16 i;
2453
2454         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2455                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2456
2457         return err;
2458 }
2459
2460 /**
2461  * i40e_vsi_configure_rx - Configure the VSI for Rx
2462  * @vsi: the VSI being configured
2463  *
2464  * Configure the Rx VSI for operation.
2465  **/
2466 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2467 {
2468         int err = 0;
2469         u16 i;
2470
2471         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2472                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2473                                + ETH_FCS_LEN + VLAN_HLEN;
2474         else
2475                 vsi->max_frame = I40E_RXBUFFER_2048;
2476
2477         /* figure out correct receive buffer length */
2478         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2479                                     I40E_FLAG_RX_PS_ENABLED)) {
2480         case I40E_FLAG_RX_1BUF_ENABLED:
2481                 vsi->rx_hdr_len = 0;
2482                 vsi->rx_buf_len = vsi->max_frame;
2483                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2484                 break;
2485         case I40E_FLAG_RX_PS_ENABLED:
2486                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2487                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2488                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2489                 break;
2490         default:
2491                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2492                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2493                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2494                 break;
2495         }
2496
2497         /* round up for the chip's needs */
2498         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2499                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2500         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2501                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2502
2503         /* set up individual rings */
2504         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2505                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2506
2507         return err;
2508 }
2509
2510 /**
2511  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2512  * @vsi: ptr to the VSI
2513  **/
2514 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2515 {
2516         struct i40e_ring *tx_ring, *rx_ring;
2517         u16 qoffset, qcount;
2518         int i, n;
2519
2520         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2521                 return;
2522
2523         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2524                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2525                         continue;
2526
2527                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2528                 qcount = vsi->tc_config.tc_info[n].qcount;
2529                 for (i = qoffset; i < (qoffset + qcount); i++) {
2530                         rx_ring = vsi->rx_rings[i];
2531                         tx_ring = vsi->tx_rings[i];
2532                         rx_ring->dcb_tc = n;
2533                         tx_ring->dcb_tc = n;
2534                 }
2535         }
2536 }
2537
2538 /**
2539  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2540  * @vsi: ptr to the VSI
2541  **/
2542 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2543 {
2544         if (vsi->netdev)
2545                 i40e_set_rx_mode(vsi->netdev);
2546 }
2547
2548 /**
2549  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2550  * @vsi: Pointer to the targeted VSI
2551  *
2552  * This function replays the hlist on the hw where all the SB Flow Director
2553  * filters were saved.
2554  **/
2555 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2556 {
2557         struct i40e_fdir_filter *filter;
2558         struct i40e_pf *pf = vsi->back;
2559         struct hlist_node *node;
2560
2561         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2562                 return;
2563
2564         hlist_for_each_entry_safe(filter, node,
2565                                   &pf->fdir_filter_list, fdir_node) {
2566                 i40e_add_del_fdir(vsi, filter, true);
2567         }
2568 }
2569
2570 /**
2571  * i40e_vsi_configure - Set up the VSI for action
2572  * @vsi: the VSI being configured
2573  **/
2574 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2575 {
2576         int err;
2577
2578         i40e_set_vsi_rx_mode(vsi);
2579         i40e_restore_vlan(vsi);
2580         i40e_vsi_config_dcb_rings(vsi);
2581         err = i40e_vsi_configure_tx(vsi);
2582         if (!err)
2583                 err = i40e_vsi_configure_rx(vsi);
2584
2585         return err;
2586 }
2587
2588 /**
2589  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2590  * @vsi: the VSI being configured
2591  **/
2592 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2593 {
2594         struct i40e_pf *pf = vsi->back;
2595         struct i40e_q_vector *q_vector;
2596         struct i40e_hw *hw = &pf->hw;
2597         u16 vector;
2598         int i, q;
2599         u32 val;
2600         u32 qp;
2601
2602         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2603          * and PFINT_LNKLSTn registers, e.g.:
2604          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2605          */
2606         qp = vsi->base_queue;
2607         vector = vsi->base_vector;
2608         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2609                 q_vector = vsi->q_vectors[i];
2610                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2611                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2612                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2613                      q_vector->rx.itr);
2614                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2615                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2616                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2617                      q_vector->tx.itr);
2618
2619                 /* Linked list for the queuepairs assigned to this vector */
2620                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2621                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2622                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2623                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2624                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2625                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2626                               (I40E_QUEUE_TYPE_TX
2627                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2628
2629                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2630
2631                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2632                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2633                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2634                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2635                               (I40E_QUEUE_TYPE_RX
2636                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2637
2638                         /* Terminate the linked list */
2639                         if (q == (q_vector->num_ringpairs - 1))
2640                                 val |= (I40E_QUEUE_END_OF_LIST
2641                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2642
2643                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2644                         qp++;
2645                 }
2646         }
2647
2648         i40e_flush(hw);
2649 }
2650
2651 /**
2652  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2653  * @hw: ptr to the hardware info
2654  **/
2655 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2656 {
2657         u32 val;
2658
2659         /* clear things first */
2660         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2661         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2662
2663         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2664               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2665               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2666               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2667               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2668               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2669               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2670               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2671               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2672
2673         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2674
2675         /* SW_ITR_IDX = 0, but don't change INTENA */
2676         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2677                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2678
2679         /* OTHER_ITR_IDX = 0 */
2680         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2681 }
2682
2683 /**
2684  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2685  * @vsi: the VSI being configured
2686  **/
2687 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2688 {
2689         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2690         struct i40e_pf *pf = vsi->back;
2691         struct i40e_hw *hw = &pf->hw;
2692         u32 val;
2693
2694         /* set the ITR configuration */
2695         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2696         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2697         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2698         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2699         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2700         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2701
2702         i40e_enable_misc_int_causes(hw);
2703
2704         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2705         wr32(hw, I40E_PFINT_LNKLST0, 0);
2706
2707         /* Associate the queue pair to the vector and enable the queue int */
2708         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2709               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2710               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2711
2712         wr32(hw, I40E_QINT_RQCTL(0), val);
2713
2714         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2715               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2716               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2717
2718         wr32(hw, I40E_QINT_TQCTL(0), val);
2719         i40e_flush(hw);
2720 }
2721
2722 /**
2723  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2724  * @pf: board private structure
2725  **/
2726 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2727 {
2728         struct i40e_hw *hw = &pf->hw;
2729
2730         wr32(hw, I40E_PFINT_DYN_CTL0,
2731              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2732         i40e_flush(hw);
2733 }
2734
2735 /**
2736  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2737  * @pf: board private structure
2738  **/
2739 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2740 {
2741         struct i40e_hw *hw = &pf->hw;
2742         u32 val;
2743
2744         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2745               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2746               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2747
2748         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2749         i40e_flush(hw);
2750 }
2751
2752 /**
2753  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2754  * @vsi: pointer to a vsi
2755  * @vector: enable a particular Hw Interrupt vector
2756  **/
2757 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2758 {
2759         struct i40e_pf *pf = vsi->back;
2760         struct i40e_hw *hw = &pf->hw;
2761         u32 val;
2762
2763         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2764               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2765               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2766         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2767         /* skip the flush */
2768 }
2769
2770 /**
2771  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2772  * @irq: interrupt number
2773  * @data: pointer to a q_vector
2774  **/
2775 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2776 {
2777         struct i40e_q_vector *q_vector = data;
2778
2779         if (!q_vector->tx.ring && !q_vector->rx.ring)
2780                 return IRQ_HANDLED;
2781
2782         napi_schedule(&q_vector->napi);
2783
2784         return IRQ_HANDLED;
2785 }
2786
2787 /**
2788  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2789  * @vsi: the VSI being configured
2790  * @basename: name for the vector
2791  *
2792  * Allocates MSI-X vectors and requests interrupts from the kernel.
2793  **/
2794 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2795 {
2796         int q_vectors = vsi->num_q_vectors;
2797         struct i40e_pf *pf = vsi->back;
2798         int base = vsi->base_vector;
2799         int rx_int_idx = 0;
2800         int tx_int_idx = 0;
2801         int vector, err;
2802
2803         for (vector = 0; vector < q_vectors; vector++) {
2804                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2805
2806                 if (q_vector->tx.ring && q_vector->rx.ring) {
2807                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2808                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2809                         tx_int_idx++;
2810                 } else if (q_vector->rx.ring) {
2811                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2812                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2813                 } else if (q_vector->tx.ring) {
2814                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2815                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2816                 } else {
2817                         /* skip this unused q_vector */
2818                         continue;
2819                 }
2820                 err = request_irq(pf->msix_entries[base + vector].vector,
2821                                   vsi->irq_handler,
2822                                   0,
2823                                   q_vector->name,
2824                                   q_vector);
2825                 if (err) {
2826                         dev_info(&pf->pdev->dev,
2827                                  "%s: request_irq failed, error: %d\n",
2828                                  __func__, err);
2829                         goto free_queue_irqs;
2830                 }
2831                 /* assign the mask for this irq */
2832                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2833                                       &q_vector->affinity_mask);
2834         }
2835
2836         vsi->irqs_ready = true;
2837         return 0;
2838
2839 free_queue_irqs:
2840         while (vector) {
2841                 vector--;
2842                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2843                                       NULL);
2844                 free_irq(pf->msix_entries[base + vector].vector,
2845                          &(vsi->q_vectors[vector]));
2846         }
2847         return err;
2848 }
2849
2850 /**
2851  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2852  * @vsi: the VSI being un-configured
2853  **/
2854 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2855 {
2856         struct i40e_pf *pf = vsi->back;
2857         struct i40e_hw *hw = &pf->hw;
2858         int base = vsi->base_vector;
2859         int i;
2860
2861         for (i = 0; i < vsi->num_queue_pairs; i++) {
2862                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2863                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2864         }
2865
2866         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2867                 for (i = vsi->base_vector;
2868                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2869                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2870
2871                 i40e_flush(hw);
2872                 for (i = 0; i < vsi->num_q_vectors; i++)
2873                         synchronize_irq(pf->msix_entries[i + base].vector);
2874         } else {
2875                 /* Legacy and MSI mode - this stops all interrupt handling */
2876                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2877                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2878                 i40e_flush(hw);
2879                 synchronize_irq(pf->pdev->irq);
2880         }
2881 }
2882
2883 /**
2884  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2885  * @vsi: the VSI being configured
2886  **/
2887 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2888 {
2889         struct i40e_pf *pf = vsi->back;
2890         int i;
2891
2892         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2893                 for (i = vsi->base_vector;
2894                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2895                         i40e_irq_dynamic_enable(vsi, i);
2896         } else {
2897                 i40e_irq_dynamic_enable_icr0(pf);
2898         }
2899
2900         i40e_flush(&pf->hw);
2901         return 0;
2902 }
2903
2904 /**
2905  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2906  * @pf: board private structure
2907  **/
2908 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2909 {
2910         /* Disable ICR 0 */
2911         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2912         i40e_flush(&pf->hw);
2913 }
2914
2915 /**
2916  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2917  * @irq: interrupt number
2918  * @data: pointer to a q_vector
2919  *
2920  * This is the handler used for all MSI/Legacy interrupts, and deals
2921  * with both queue and non-queue interrupts.  This is also used in
2922  * MSIX mode to handle the non-queue interrupts.
2923  **/
2924 static irqreturn_t i40e_intr(int irq, void *data)
2925 {
2926         struct i40e_pf *pf = (struct i40e_pf *)data;
2927         struct i40e_hw *hw = &pf->hw;
2928         irqreturn_t ret = IRQ_NONE;
2929         u32 icr0, icr0_remaining;
2930         u32 val, ena_mask;
2931
2932         icr0 = rd32(hw, I40E_PFINT_ICR0);
2933         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2934
2935         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2936         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2937                 goto enable_intr;
2938
2939         /* if interrupt but no bits showing, must be SWINT */
2940         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2941             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2942                 pf->sw_int_count++;
2943
2944         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2945         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2946
2947                 /* temporarily disable queue cause for NAPI processing */
2948                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2949                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2950                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2951
2952                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2953                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2954                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2955
2956                 if (!test_bit(__I40E_DOWN, &pf->state))
2957                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2958         }
2959
2960         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2961                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2962                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2963         }
2964
2965         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2966                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2967                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2968         }
2969
2970         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2971                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2972                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2973         }
2974
2975         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2976                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2977                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2978                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2979                 val = rd32(hw, I40E_GLGEN_RSTAT);
2980                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2981                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2982                 if (val == I40E_RESET_CORER) {
2983                         pf->corer_count++;
2984                 } else if (val == I40E_RESET_GLOBR) {
2985                         pf->globr_count++;
2986                 } else if (val == I40E_RESET_EMPR) {
2987                         pf->empr_count++;
2988                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
2989                 }
2990         }
2991
2992         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2993                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2994                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2995         }
2996
2997         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
2998                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
2999
3000                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3001                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3002                         i40e_ptp_tx_hwtstamp(pf);
3003                 }
3004         }
3005
3006         /* If a critical error is pending we have no choice but to reset the
3007          * device.
3008          * Report and mask out any remaining unexpected interrupts.
3009          */
3010         icr0_remaining = icr0 & ena_mask;
3011         if (icr0_remaining) {
3012                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3013                          icr0_remaining);
3014                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3015                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3016                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3017                         dev_info(&pf->pdev->dev, "device will be reset\n");
3018                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3019                         i40e_service_event_schedule(pf);
3020                 }
3021                 ena_mask &= ~icr0_remaining;
3022         }
3023         ret = IRQ_HANDLED;
3024
3025 enable_intr:
3026         /* re-enable interrupt causes */
3027         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3028         if (!test_bit(__I40E_DOWN, &pf->state)) {
3029                 i40e_service_event_schedule(pf);
3030                 i40e_irq_dynamic_enable_icr0(pf);
3031         }
3032
3033         return ret;
3034 }
3035
3036 /**
3037  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3038  * @tx_ring:  tx ring to clean
3039  * @budget:   how many cleans we're allowed
3040  *
3041  * Returns true if there's any budget left (e.g. the clean is finished)
3042  **/
3043 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3044 {
3045         struct i40e_vsi *vsi = tx_ring->vsi;
3046         u16 i = tx_ring->next_to_clean;
3047         struct i40e_tx_buffer *tx_buf;
3048         struct i40e_tx_desc *tx_desc;
3049
3050         tx_buf = &tx_ring->tx_bi[i];
3051         tx_desc = I40E_TX_DESC(tx_ring, i);
3052         i -= tx_ring->count;
3053
3054         do {
3055                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3056
3057                 /* if next_to_watch is not set then there is no work pending */
3058                 if (!eop_desc)
3059                         break;
3060
3061                 /* prevent any other reads prior to eop_desc */
3062                 read_barrier_depends();
3063
3064                 /* if the descriptor isn't done, no work yet to do */
3065                 if (!(eop_desc->cmd_type_offset_bsz &
3066                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3067                         break;
3068
3069                 /* clear next_to_watch to prevent false hangs */
3070                 tx_buf->next_to_watch = NULL;
3071
3072                 /* unmap skb header data */
3073                 dma_unmap_single(tx_ring->dev,
3074                                  dma_unmap_addr(tx_buf, dma),
3075                                  dma_unmap_len(tx_buf, len),
3076                                  DMA_TO_DEVICE);
3077
3078                 dma_unmap_len_set(tx_buf, len, 0);
3079
3080
3081                 /* move to the next desc and buffer to clean */
3082                 tx_buf++;
3083                 tx_desc++;
3084                 i++;
3085                 if (unlikely(!i)) {
3086                         i -= tx_ring->count;
3087                         tx_buf = tx_ring->tx_bi;
3088                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3089                 }
3090
3091                 /* update budget accounting */
3092                 budget--;
3093         } while (likely(budget));
3094
3095         i += tx_ring->count;
3096         tx_ring->next_to_clean = i;
3097
3098         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3099                 i40e_irq_dynamic_enable(vsi,
3100                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3101         }
3102         return budget > 0;
3103 }
3104
3105 /**
3106  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3107  * @irq: interrupt number
3108  * @data: pointer to a q_vector
3109  **/
3110 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3111 {
3112         struct i40e_q_vector *q_vector = data;
3113         struct i40e_vsi *vsi;
3114
3115         if (!q_vector->tx.ring)
3116                 return IRQ_HANDLED;
3117
3118         vsi = q_vector->tx.ring->vsi;
3119         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3120
3121         return IRQ_HANDLED;
3122 }
3123
3124 /**
3125  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3126  * @vsi: the VSI being configured
3127  * @v_idx: vector index
3128  * @qp_idx: queue pair index
3129  **/
3130 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3131 {
3132         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3133         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3134         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3135
3136         tx_ring->q_vector = q_vector;
3137         tx_ring->next = q_vector->tx.ring;
3138         q_vector->tx.ring = tx_ring;
3139         q_vector->tx.count++;
3140
3141         rx_ring->q_vector = q_vector;
3142         rx_ring->next = q_vector->rx.ring;
3143         q_vector->rx.ring = rx_ring;
3144         q_vector->rx.count++;
3145 }
3146
3147 /**
3148  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3149  * @vsi: the VSI being configured
3150  *
3151  * This function maps descriptor rings to the queue-specific vectors
3152  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3153  * one vector per queue pair, but on a constrained vector budget, we
3154  * group the queue pairs as "efficiently" as possible.
3155  **/
3156 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3157 {
3158         int qp_remaining = vsi->num_queue_pairs;
3159         int q_vectors = vsi->num_q_vectors;
3160         int num_ringpairs;
3161         int v_start = 0;
3162         int qp_idx = 0;
3163
3164         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3165          * group them so there are multiple queues per vector.
3166          * It is also important to go through all the vectors available to be
3167          * sure that if we don't use all the vectors, that the remaining vectors
3168          * are cleared. This is especially important when decreasing the
3169          * number of queues in use.
3170          */
3171         for (; v_start < q_vectors; v_start++) {
3172                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3173
3174                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3175
3176                 q_vector->num_ringpairs = num_ringpairs;
3177
3178                 q_vector->rx.count = 0;
3179                 q_vector->tx.count = 0;
3180                 q_vector->rx.ring = NULL;
3181                 q_vector->tx.ring = NULL;
3182
3183                 while (num_ringpairs--) {
3184                         map_vector_to_qp(vsi, v_start, qp_idx);
3185                         qp_idx++;
3186                         qp_remaining--;
3187                 }
3188         }
3189 }
3190
3191 /**
3192  * i40e_vsi_request_irq - Request IRQ from the OS
3193  * @vsi: the VSI being configured
3194  * @basename: name for the vector
3195  **/
3196 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3197 {
3198         struct i40e_pf *pf = vsi->back;
3199         int err;
3200
3201         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3202                 err = i40e_vsi_request_irq_msix(vsi, basename);
3203         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3204                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3205                                   pf->misc_int_name, pf);
3206         else
3207                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3208                                   pf->misc_int_name, pf);
3209
3210         if (err)
3211                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3212
3213         return err;
3214 }
3215
3216 #ifdef CONFIG_NET_POLL_CONTROLLER
3217 /**
3218  * i40e_netpoll - A Polling 'interrupt'handler
3219  * @netdev: network interface device structure
3220  *
3221  * This is used by netconsole to send skbs without having to re-enable
3222  * interrupts.  It's not called while the normal interrupt routine is executing.
3223  **/
3224 static void i40e_netpoll(struct net_device *netdev)
3225 {
3226         struct i40e_netdev_priv *np = netdev_priv(netdev);
3227         struct i40e_vsi *vsi = np->vsi;
3228         struct i40e_pf *pf = vsi->back;
3229         int i;
3230
3231         /* if interface is down do nothing */
3232         if (test_bit(__I40E_DOWN, &vsi->state))
3233                 return;
3234
3235         pf->flags |= I40E_FLAG_IN_NETPOLL;
3236         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3237                 for (i = 0; i < vsi->num_q_vectors; i++)
3238                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3239         } else {
3240                 i40e_intr(pf->pdev->irq, netdev);
3241         }
3242         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3243 }
3244 #endif
3245
3246 /**
3247  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3248  * @pf: the PF being configured
3249  * @pf_q: the PF queue
3250  * @enable: enable or disable state of the queue
3251  *
3252  * This routine will wait for the given Tx queue of the PF to reach the
3253  * enabled or disabled state.
3254  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3255  * multiple retries; else will return 0 in case of success.
3256  **/
3257 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3258 {
3259         int i;
3260         u32 tx_reg;
3261
3262         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3263                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3264                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3265                         break;
3266
3267                 udelay(10);
3268         }
3269         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3270                 return -ETIMEDOUT;
3271
3272         return 0;
3273 }
3274
3275 /**
3276  * i40e_vsi_control_tx - Start or stop a VSI's rings
3277  * @vsi: the VSI being configured
3278  * @enable: start or stop the rings
3279  **/
3280 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3281 {
3282         struct i40e_pf *pf = vsi->back;
3283         struct i40e_hw *hw = &pf->hw;
3284         int i, j, pf_q, ret = 0;
3285         u32 tx_reg;
3286
3287         pf_q = vsi->base_queue;
3288         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3289
3290                 /* warn the TX unit of coming changes */
3291                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3292                 if (!enable)
3293                         udelay(10);
3294
3295                 for (j = 0; j < 50; j++) {
3296                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3297                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3298                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3299                                 break;
3300                         usleep_range(1000, 2000);
3301                 }
3302                 /* Skip if the queue is already in the requested state */
3303                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3304                         continue;
3305
3306                 /* turn on/off the queue */
3307                 if (enable) {
3308                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3309                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3310                 } else {
3311                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3312                 }
3313
3314                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3315
3316                 /* wait for the change to finish */
3317                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3318                 if (ret) {
3319                         dev_info(&pf->pdev->dev,
3320                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3321                                  __func__, vsi->seid, pf_q,
3322                                  (enable ? "en" : "dis"));
3323                         break;
3324                 }
3325         }
3326
3327         if (hw->revision_id == 0)
3328                 mdelay(50);
3329         return ret;
3330 }
3331
3332 /**
3333  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3334  * @pf: the PF being configured
3335  * @pf_q: the PF queue
3336  * @enable: enable or disable state of the queue
3337  *
3338  * This routine will wait for the given Rx queue of the PF to reach the
3339  * enabled or disabled state.
3340  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3341  * multiple retries; else will return 0 in case of success.
3342  **/
3343 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3344 {
3345         int i;
3346         u32 rx_reg;
3347
3348         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3349                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3350                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3351                         break;
3352
3353                 udelay(10);
3354         }
3355         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3356                 return -ETIMEDOUT;
3357
3358         return 0;
3359 }
3360
3361 /**
3362  * i40e_vsi_control_rx - Start or stop a VSI's rings
3363  * @vsi: the VSI being configured
3364  * @enable: start or stop the rings
3365  **/
3366 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3367 {
3368         struct i40e_pf *pf = vsi->back;
3369         struct i40e_hw *hw = &pf->hw;
3370         int i, j, pf_q, ret = 0;
3371         u32 rx_reg;
3372
3373         pf_q = vsi->base_queue;
3374         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3375                 for (j = 0; j < 50; j++) {
3376                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3377                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3378                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3379                                 break;
3380                         usleep_range(1000, 2000);
3381                 }
3382
3383                 /* Skip if the queue is already in the requested state */
3384                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3385                         continue;
3386
3387                 /* turn on/off the queue */
3388                 if (enable)
3389                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3390                 else
3391                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3392                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3393
3394                 /* wait for the change to finish */
3395                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3396                 if (ret) {
3397                         dev_info(&pf->pdev->dev,
3398                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3399                                  __func__, vsi->seid, pf_q,
3400                                  (enable ? "en" : "dis"));
3401                         break;
3402                 }
3403         }
3404
3405         return ret;
3406 }
3407
3408 /**
3409  * i40e_vsi_control_rings - Start or stop a VSI's rings
3410  * @vsi: the VSI being configured
3411  * @enable: start or stop the rings
3412  **/
3413 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3414 {
3415         int ret = 0;
3416
3417         /* do rx first for enable and last for disable */
3418         if (request) {
3419                 ret = i40e_vsi_control_rx(vsi, request);
3420                 if (ret)
3421                         return ret;
3422                 ret = i40e_vsi_control_tx(vsi, request);
3423         } else {
3424                 /* Ignore return value, we need to shutdown whatever we can */
3425                 i40e_vsi_control_tx(vsi, request);
3426                 i40e_vsi_control_rx(vsi, request);
3427         }
3428
3429         return ret;
3430 }
3431
3432 /**
3433  * i40e_vsi_free_irq - Free the irq association with the OS
3434  * @vsi: the VSI being configured
3435  **/
3436 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3437 {
3438         struct i40e_pf *pf = vsi->back;
3439         struct i40e_hw *hw = &pf->hw;
3440         int base = vsi->base_vector;
3441         u32 val, qp;
3442         int i;
3443
3444         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3445                 if (!vsi->q_vectors)
3446                         return;
3447
3448                 if (!vsi->irqs_ready)
3449                         return;
3450
3451                 vsi->irqs_ready = false;
3452                 for (i = 0; i < vsi->num_q_vectors; i++) {
3453                         u16 vector = i + base;
3454
3455                         /* free only the irqs that were actually requested */
3456                         if (!vsi->q_vectors[i] ||
3457                             !vsi->q_vectors[i]->num_ringpairs)
3458                                 continue;
3459
3460                         /* clear the affinity_mask in the IRQ descriptor */
3461                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3462                                               NULL);
3463                         free_irq(pf->msix_entries[vector].vector,
3464                                  vsi->q_vectors[i]);
3465
3466                         /* Tear down the interrupt queue link list
3467                          *
3468                          * We know that they come in pairs and always
3469                          * the Rx first, then the Tx.  To clear the
3470                          * link list, stick the EOL value into the
3471                          * next_q field of the registers.
3472                          */
3473                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3474                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3475                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3476                         val |= I40E_QUEUE_END_OF_LIST
3477                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3478                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3479
3480                         while (qp != I40E_QUEUE_END_OF_LIST) {
3481                                 u32 next;
3482
3483                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3484
3485                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3486                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3487                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3488                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3489
3490                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3491                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3492
3493                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3494
3495                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3496
3497                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3498                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3499
3500                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3501                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3502                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3503                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3504
3505                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3506                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3507
3508                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3509                                 qp = next;
3510                         }
3511                 }
3512         } else {
3513                 free_irq(pf->pdev->irq, pf);
3514
3515                 val = rd32(hw, I40E_PFINT_LNKLST0);
3516                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3517                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3518                 val |= I40E_QUEUE_END_OF_LIST
3519                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3520                 wr32(hw, I40E_PFINT_LNKLST0, val);
3521
3522                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3523                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3524                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3525                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3526                          I40E_QINT_RQCTL_INTEVENT_MASK);
3527
3528                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3529                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3530
3531                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3532
3533                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3534
3535                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3536                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3537                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3538                          I40E_QINT_TQCTL_INTEVENT_MASK);
3539
3540                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3541                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3542
3543                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3544         }
3545 }
3546
3547 /**
3548  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3549  * @vsi: the VSI being configured
3550  * @v_idx: Index of vector to be freed
3551  *
3552  * This function frees the memory allocated to the q_vector.  In addition if
3553  * NAPI is enabled it will delete any references to the NAPI struct prior
3554  * to freeing the q_vector.
3555  **/
3556 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3557 {
3558         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3559         struct i40e_ring *ring;
3560
3561         if (!q_vector)
3562                 return;
3563
3564         /* disassociate q_vector from rings */
3565         i40e_for_each_ring(ring, q_vector->tx)
3566                 ring->q_vector = NULL;
3567
3568         i40e_for_each_ring(ring, q_vector->rx)
3569                 ring->q_vector = NULL;
3570
3571         /* only VSI w/ an associated netdev is set up w/ NAPI */
3572         if (vsi->netdev)
3573                 netif_napi_del(&q_vector->napi);
3574
3575         vsi->q_vectors[v_idx] = NULL;
3576
3577         kfree_rcu(q_vector, rcu);
3578 }
3579
3580 /**
3581  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3582  * @vsi: the VSI being un-configured
3583  *
3584  * This frees the memory allocated to the q_vectors and
3585  * deletes references to the NAPI struct.
3586  **/
3587 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3588 {
3589         int v_idx;
3590
3591         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3592                 i40e_free_q_vector(vsi, v_idx);
3593 }
3594
3595 /**
3596  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3597  * @pf: board private structure
3598  **/
3599 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3600 {
3601         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3602         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3603                 pci_disable_msix(pf->pdev);
3604                 kfree(pf->msix_entries);
3605                 pf->msix_entries = NULL;
3606         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3607                 pci_disable_msi(pf->pdev);
3608         }
3609         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3610 }
3611
3612 /**
3613  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3614  * @pf: board private structure
3615  *
3616  * We go through and clear interrupt specific resources and reset the structure
3617  * to pre-load conditions
3618  **/
3619 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3620 {
3621         int i;
3622
3623         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3624         for (i = 0; i < pf->num_alloc_vsi; i++)
3625                 if (pf->vsi[i])
3626                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3627         i40e_reset_interrupt_capability(pf);
3628 }
3629
3630 /**
3631  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3632  * @vsi: the VSI being configured
3633  **/
3634 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3635 {
3636         int q_idx;
3637
3638         if (!vsi->netdev)
3639                 return;
3640
3641         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3642                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3643 }
3644
3645 /**
3646  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3647  * @vsi: the VSI being configured
3648  **/
3649 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3650 {
3651         int q_idx;
3652
3653         if (!vsi->netdev)
3654                 return;
3655
3656         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3657                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3658 }
3659
3660 /**
3661  * i40e_vsi_close - Shut down a VSI
3662  * @vsi: the vsi to be quelled
3663  **/
3664 static void i40e_vsi_close(struct i40e_vsi *vsi)
3665 {
3666         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3667                 i40e_down(vsi);
3668         i40e_vsi_free_irq(vsi);
3669         i40e_vsi_free_tx_resources(vsi);
3670         i40e_vsi_free_rx_resources(vsi);
3671 }
3672
3673 /**
3674  * i40e_quiesce_vsi - Pause a given VSI
3675  * @vsi: the VSI being paused
3676  **/
3677 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3678 {
3679         if (test_bit(__I40E_DOWN, &vsi->state))
3680                 return;
3681
3682         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3683         if (vsi->netdev && netif_running(vsi->netdev)) {
3684                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3685         } else {
3686                 i40e_vsi_close(vsi);
3687         }
3688 }
3689
3690 /**
3691  * i40e_unquiesce_vsi - Resume a given VSI
3692  * @vsi: the VSI being resumed
3693  **/
3694 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3695 {
3696         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3697                 return;
3698
3699         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3700         if (vsi->netdev && netif_running(vsi->netdev))
3701                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3702         else
3703                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3704 }
3705
3706 /**
3707  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3708  * @pf: the PF
3709  **/
3710 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3711 {
3712         int v;
3713
3714         for (v = 0; v < pf->num_alloc_vsi; v++) {
3715                 if (pf->vsi[v])
3716                         i40e_quiesce_vsi(pf->vsi[v]);
3717         }
3718 }
3719
3720 /**
3721  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3722  * @pf: the PF
3723  **/
3724 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3725 {
3726         int v;
3727
3728         for (v = 0; v < pf->num_alloc_vsi; v++) {
3729                 if (pf->vsi[v])
3730                         i40e_unquiesce_vsi(pf->vsi[v]);
3731         }
3732 }
3733
3734 /**
3735  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3736  * @dcbcfg: the corresponding DCBx configuration structure
3737  *
3738  * Return the number of TCs from given DCBx configuration
3739  **/
3740 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3741 {
3742         u8 num_tc = 0;
3743         int i;
3744
3745         /* Scan the ETS Config Priority Table to find
3746          * traffic class enabled for a given priority
3747          * and use the traffic class index to get the
3748          * number of traffic classes enabled
3749          */
3750         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3751                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3752                         num_tc = dcbcfg->etscfg.prioritytable[i];
3753         }
3754
3755         /* Traffic class index starts from zero so
3756          * increment to return the actual count
3757          */
3758         return num_tc + 1;
3759 }
3760
3761 /**
3762  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3763  * @dcbcfg: the corresponding DCBx configuration structure
3764  *
3765  * Query the current DCB configuration and return the number of
3766  * traffic classes enabled from the given DCBX config
3767  **/
3768 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3769 {
3770         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3771         u8 enabled_tc = 1;
3772         u8 i;
3773
3774         for (i = 0; i < num_tc; i++)
3775                 enabled_tc |= 1 << i;
3776
3777         return enabled_tc;
3778 }
3779
3780 /**
3781  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3782  * @pf: PF being queried
3783  *
3784  * Return number of traffic classes enabled for the given PF
3785  **/
3786 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3787 {
3788         struct i40e_hw *hw = &pf->hw;
3789         u8 i, enabled_tc;
3790         u8 num_tc = 0;
3791         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3792
3793         /* If DCB is not enabled then always in single TC */
3794         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3795                 return 1;
3796
3797         /* MFP mode return count of enabled TCs for this PF */
3798         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3799                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3800                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3801                         if (enabled_tc & (1 << i))
3802                                 num_tc++;
3803                 }
3804                 return num_tc;
3805         }
3806
3807         /* SFP mode will be enabled for all TCs on port */
3808         return i40e_dcb_get_num_tc(dcbcfg);
3809 }
3810
3811 /**
3812  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3813  * @pf: PF being queried
3814  *
3815  * Return a bitmap for first enabled traffic class for this PF.
3816  **/
3817 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3818 {
3819         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3820         u8 i = 0;
3821
3822         if (!enabled_tc)
3823                 return 0x1; /* TC0 */
3824
3825         /* Find the first enabled TC */
3826         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3827                 if (enabled_tc & (1 << i))
3828                         break;
3829         }
3830
3831         return 1 << i;
3832 }
3833
3834 /**
3835  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3836  * @pf: PF being queried
3837  *
3838  * Return a bitmap for enabled traffic classes for this PF.
3839  **/
3840 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3841 {
3842         /* If DCB is not enabled for this PF then just return default TC */
3843         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3844                 return i40e_pf_get_default_tc(pf);
3845
3846         /* MFP mode will have enabled TCs set by FW */
3847         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3848                 return pf->hw.func_caps.enabled_tcmap;
3849
3850         /* SFP mode we want PF to be enabled for all TCs */
3851         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3852 }
3853
3854 /**
3855  * i40e_vsi_get_bw_info - Query VSI BW Information
3856  * @vsi: the VSI being queried
3857  *
3858  * Returns 0 on success, negative value on failure
3859  **/
3860 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3861 {
3862         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3863         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3864         struct i40e_pf *pf = vsi->back;
3865         struct i40e_hw *hw = &pf->hw;
3866         i40e_status aq_ret;
3867         u32 tc_bw_max;
3868         int i;
3869
3870         /* Get the VSI level BW configuration */
3871         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3872         if (aq_ret) {
3873                 dev_info(&pf->pdev->dev,
3874                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3875                          aq_ret, pf->hw.aq.asq_last_status);
3876                 return -EINVAL;
3877         }
3878
3879         /* Get the VSI level BW configuration per TC */
3880         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3881                                                   NULL);
3882         if (aq_ret) {
3883                 dev_info(&pf->pdev->dev,
3884                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3885                          aq_ret, pf->hw.aq.asq_last_status);
3886                 return -EINVAL;
3887         }
3888
3889         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3890                 dev_info(&pf->pdev->dev,
3891                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3892                          bw_config.tc_valid_bits,
3893                          bw_ets_config.tc_valid_bits);
3894                 /* Still continuing */
3895         }
3896
3897         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3898         vsi->bw_max_quanta = bw_config.max_bw;
3899         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3900                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3901         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3902                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3903                 vsi->bw_ets_limit_credits[i] =
3904                                         le16_to_cpu(bw_ets_config.credits[i]);
3905                 /* 3 bits out of 4 for each TC */
3906                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3907         }
3908
3909         return 0;
3910 }
3911
3912 /**
3913  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3914  * @vsi: the VSI being configured
3915  * @enabled_tc: TC bitmap
3916  * @bw_credits: BW shared credits per TC
3917  *
3918  * Returns 0 on success, negative value on failure
3919  **/
3920 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3921                                        u8 *bw_share)
3922 {
3923         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3924         i40e_status aq_ret;
3925         int i;
3926
3927         bw_data.tc_valid_bits = enabled_tc;
3928         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3929                 bw_data.tc_bw_credits[i] = bw_share[i];
3930
3931         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3932                                           NULL);
3933         if (aq_ret) {
3934                 dev_info(&vsi->back->pdev->dev,
3935                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3936                          vsi->back->hw.aq.asq_last_status);
3937                 return -EINVAL;
3938         }
3939
3940         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3941                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3942
3943         return 0;
3944 }
3945
3946 /**
3947  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3948  * @vsi: the VSI being configured
3949  * @enabled_tc: TC map to be enabled
3950  *
3951  **/
3952 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3953 {
3954         struct net_device *netdev = vsi->netdev;
3955         struct i40e_pf *pf = vsi->back;
3956         struct i40e_hw *hw = &pf->hw;
3957         u8 netdev_tc = 0;
3958         int i;
3959         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3960
3961         if (!netdev)
3962                 return;
3963
3964         if (!enabled_tc) {
3965                 netdev_reset_tc(netdev);
3966                 return;
3967         }
3968
3969         /* Set up actual enabled TCs on the VSI */
3970         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3971                 return;
3972
3973         /* set per TC queues for the VSI */
3974         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3975                 /* Only set TC queues for enabled tcs
3976                  *
3977                  * e.g. For a VSI that has TC0 and TC3 enabled the
3978                  * enabled_tc bitmap would be 0x00001001; the driver
3979                  * will set the numtc for netdev as 2 that will be
3980                  * referenced by the netdev layer as TC 0 and 1.
3981                  */
3982                 if (vsi->tc_config.enabled_tc & (1 << i))
3983                         netdev_set_tc_queue(netdev,
3984                                         vsi->tc_config.tc_info[i].netdev_tc,
3985                                         vsi->tc_config.tc_info[i].qcount,
3986                                         vsi->tc_config.tc_info[i].qoffset);
3987         }
3988
3989         /* Assign UP2TC map for the VSI */
3990         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3991                 /* Get the actual TC# for the UP */
3992                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3993                 /* Get the mapped netdev TC# for the UP */
3994                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3995                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3996         }
3997 }
3998
3999 /**
4000  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4001  * @vsi: the VSI being configured
4002  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4003  **/
4004 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4005                                       struct i40e_vsi_context *ctxt)
4006 {
4007         /* copy just the sections touched not the entire info
4008          * since not all sections are valid as returned by
4009          * update vsi params
4010          */
4011         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4012         memcpy(&vsi->info.queue_mapping,
4013                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4014         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4015                sizeof(vsi->info.tc_mapping));
4016 }
4017
4018 /**
4019  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4020  * @vsi: VSI to be configured
4021  * @enabled_tc: TC bitmap
4022  *
4023  * This configures a particular VSI for TCs that are mapped to the
4024  * given TC bitmap. It uses default bandwidth share for TCs across
4025  * VSIs to configure TC for a particular VSI.
4026  *
4027  * NOTE:
4028  * It is expected that the VSI queues have been quisced before calling
4029  * this function.
4030  **/
4031 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4032 {
4033         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4034         struct i40e_vsi_context ctxt;
4035         int ret = 0;
4036         int i;
4037
4038         /* Check if enabled_tc is same as existing or new TCs */
4039         if (vsi->tc_config.enabled_tc == enabled_tc)
4040                 return ret;
4041
4042         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4043         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4044                 if (enabled_tc & (1 << i))
4045                         bw_share[i] = 1;
4046         }
4047
4048         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4049         if (ret) {
4050                 dev_info(&vsi->back->pdev->dev,
4051                          "Failed configuring TC map %d for VSI %d\n",
4052                          enabled_tc, vsi->seid);
4053                 goto out;
4054         }
4055
4056         /* Update Queue Pairs Mapping for currently enabled UPs */
4057         ctxt.seid = vsi->seid;
4058         ctxt.pf_num = vsi->back->hw.pf_id;
4059         ctxt.vf_num = 0;
4060         ctxt.uplink_seid = vsi->uplink_seid;
4061         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4062         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4063
4064         /* Update the VSI after updating the VSI queue-mapping information */
4065         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4066         if (ret) {
4067                 dev_info(&vsi->back->pdev->dev,
4068                          "update vsi failed, aq_err=%d\n",
4069                          vsi->back->hw.aq.asq_last_status);
4070                 goto out;
4071         }
4072         /* update the local VSI info with updated queue map */
4073         i40e_vsi_update_queue_map(vsi, &ctxt);
4074         vsi->info.valid_sections = 0;
4075
4076         /* Update current VSI BW information */
4077         ret = i40e_vsi_get_bw_info(vsi);
4078         if (ret) {
4079                 dev_info(&vsi->back->pdev->dev,
4080                          "Failed updating vsi bw info, aq_err=%d\n",
4081                          vsi->back->hw.aq.asq_last_status);
4082                 goto out;
4083         }
4084
4085         /* Update the netdev TC setup */
4086         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4087 out:
4088         return ret;
4089 }
4090
4091 /**
4092  * i40e_veb_config_tc - Configure TCs for given VEB
4093  * @veb: given VEB
4094  * @enabled_tc: TC bitmap
4095  *
4096  * Configures given TC bitmap for VEB (switching) element
4097  **/
4098 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4099 {
4100         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4101         struct i40e_pf *pf = veb->pf;
4102         int ret = 0;
4103         int i;
4104
4105         /* No TCs or already enabled TCs just return */
4106         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4107                 return ret;
4108
4109         bw_data.tc_valid_bits = enabled_tc;
4110         /* bw_data.absolute_credits is not set (relative) */
4111
4112         /* Enable ETS TCs with equal BW Share for now */
4113         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4114                 if (enabled_tc & (1 << i))
4115                         bw_data.tc_bw_share_credits[i] = 1;
4116         }
4117
4118         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4119                                                    &bw_data, NULL);
4120         if (ret) {
4121                 dev_info(&pf->pdev->dev,
4122                          "veb bw config failed, aq_err=%d\n",
4123                          pf->hw.aq.asq_last_status);
4124                 goto out;
4125         }
4126
4127         /* Update the BW information */
4128         ret = i40e_veb_get_bw_info(veb);
4129         if (ret) {
4130                 dev_info(&pf->pdev->dev,
4131                          "Failed getting veb bw config, aq_err=%d\n",
4132                          pf->hw.aq.asq_last_status);
4133         }
4134
4135 out:
4136         return ret;
4137 }
4138
4139 #ifdef CONFIG_I40E_DCB
4140 /**
4141  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4142  * @pf: PF struct
4143  *
4144  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4145  * the caller would've quiesce all the VSIs before calling
4146  * this function
4147  **/
4148 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4149 {
4150         u8 tc_map = 0;
4151         int ret;
4152         u8 v;
4153
4154         /* Enable the TCs available on PF to all VEBs */
4155         tc_map = i40e_pf_get_tc_map(pf);
4156         for (v = 0; v < I40E_MAX_VEB; v++) {
4157                 if (!pf->veb[v])
4158                         continue;
4159                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4160                 if (ret) {
4161                         dev_info(&pf->pdev->dev,
4162                                  "Failed configuring TC for VEB seid=%d\n",
4163                                  pf->veb[v]->seid);
4164                         /* Will try to configure as many components */
4165                 }
4166         }
4167
4168         /* Update each VSI */
4169         for (v = 0; v < pf->num_alloc_vsi; v++) {
4170                 if (!pf->vsi[v])
4171                         continue;
4172
4173                 /* - Enable all TCs for the LAN VSI
4174                  * - For all others keep them at TC0 for now
4175                  */
4176                 if (v == pf->lan_vsi)
4177                         tc_map = i40e_pf_get_tc_map(pf);
4178                 else
4179                         tc_map = i40e_pf_get_default_tc(pf);
4180
4181                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4182                 if (ret) {
4183                         dev_info(&pf->pdev->dev,
4184                                  "Failed configuring TC for VSI seid=%d\n",
4185                                  pf->vsi[v]->seid);
4186                         /* Will try to configure as many components */
4187                 } else {
4188                         /* Re-configure VSI vectors based on updated TC map */
4189                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4190                         if (pf->vsi[v]->netdev)
4191                                 i40e_dcbnl_set_all(pf->vsi[v]);
4192                 }
4193         }
4194 }
4195
4196 /**
4197  * i40e_init_pf_dcb - Initialize DCB configuration
4198  * @pf: PF being configured
4199  *
4200  * Query the current DCB configuration and cache it
4201  * in the hardware structure
4202  **/
4203 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4204 {
4205         struct i40e_hw *hw = &pf->hw;
4206         int err = 0;
4207
4208         if (pf->hw.func_caps.npar_enable)
4209                 goto out;
4210
4211         /* Get the initial DCB configuration */
4212         err = i40e_init_dcb(hw);
4213         if (!err) {
4214                 /* Device/Function is not DCBX capable */
4215                 if ((!hw->func_caps.dcb) ||
4216                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4217                         dev_info(&pf->pdev->dev,
4218                                  "DCBX offload is not supported or is disabled for this PF.\n");
4219
4220                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4221                                 goto out;
4222
4223                 } else {
4224                         /* When status is not DISABLED then DCBX in FW */
4225                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4226                                        DCB_CAP_DCBX_VER_IEEE;
4227
4228                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4229                         /* Enable DCB tagging only when more than one TC */
4230                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4231                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4232                 }
4233         } else {
4234                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4235                          pf->hw.aq.asq_last_status);
4236         }
4237
4238 out:
4239         return err;
4240 }
4241 #endif /* CONFIG_I40E_DCB */
4242 #define SPEED_SIZE 14
4243 #define FC_SIZE 8
4244 /**
4245  * i40e_print_link_message - print link up or down
4246  * @vsi: the VSI for which link needs a message
4247  */
4248 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4249 {
4250         char speed[SPEED_SIZE] = "Unknown";
4251         char fc[FC_SIZE] = "RX/TX";
4252
4253         if (!isup) {
4254                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4255                 return;
4256         }
4257
4258         switch (vsi->back->hw.phy.link_info.link_speed) {
4259         case I40E_LINK_SPEED_40GB:
4260                 strncpy(speed, "40 Gbps", SPEED_SIZE);
4261                 break;
4262         case I40E_LINK_SPEED_10GB:
4263                 strncpy(speed, "10 Gbps", SPEED_SIZE);
4264                 break;
4265         case I40E_LINK_SPEED_1GB:
4266                 strncpy(speed, "1000 Mbps", SPEED_SIZE);
4267                 break;
4268         default:
4269                 break;
4270         }
4271
4272         switch (vsi->back->hw.fc.current_mode) {
4273         case I40E_FC_FULL:
4274                 strncpy(fc, "RX/TX", FC_SIZE);
4275                 break;
4276         case I40E_FC_TX_PAUSE:
4277                 strncpy(fc, "TX", FC_SIZE);
4278                 break;
4279         case I40E_FC_RX_PAUSE:
4280                 strncpy(fc, "RX", FC_SIZE);
4281                 break;
4282         default:
4283                 strncpy(fc, "None", FC_SIZE);
4284                 break;
4285         }
4286
4287         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4288                     speed, fc);
4289 }
4290
4291 /**
4292  * i40e_up_complete - Finish the last steps of bringing up a connection
4293  * @vsi: the VSI being configured
4294  **/
4295 static int i40e_up_complete(struct i40e_vsi *vsi)
4296 {
4297         struct i40e_pf *pf = vsi->back;
4298         int err;
4299
4300         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4301                 i40e_vsi_configure_msix(vsi);
4302         else
4303                 i40e_configure_msi_and_legacy(vsi);
4304
4305         /* start rings */
4306         err = i40e_vsi_control_rings(vsi, true);
4307         if (err)
4308                 return err;
4309
4310         clear_bit(__I40E_DOWN, &vsi->state);
4311         i40e_napi_enable_all(vsi);
4312         i40e_vsi_enable_irq(vsi);
4313
4314         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4315             (vsi->netdev)) {
4316                 i40e_print_link_message(vsi, true);
4317                 netif_tx_start_all_queues(vsi->netdev);
4318                 netif_carrier_on(vsi->netdev);
4319         } else if (vsi->netdev) {
4320                 i40e_print_link_message(vsi, false);
4321         }
4322
4323         /* replay FDIR SB filters */
4324         if (vsi->type == I40E_VSI_FDIR)
4325                 i40e_fdir_filter_restore(vsi);
4326         i40e_service_event_schedule(pf);
4327
4328         return 0;
4329 }
4330
4331 /**
4332  * i40e_vsi_reinit_locked - Reset the VSI
4333  * @vsi: the VSI being configured
4334  *
4335  * Rebuild the ring structs after some configuration
4336  * has changed, e.g. MTU size.
4337  **/
4338 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4339 {
4340         struct i40e_pf *pf = vsi->back;
4341
4342         WARN_ON(in_interrupt());
4343         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4344                 usleep_range(1000, 2000);
4345         i40e_down(vsi);
4346
4347         /* Give a VF some time to respond to the reset.  The
4348          * two second wait is based upon the watchdog cycle in
4349          * the VF driver.
4350          */
4351         if (vsi->type == I40E_VSI_SRIOV)
4352                 msleep(2000);
4353         i40e_up(vsi);
4354         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4355 }
4356
4357 /**
4358  * i40e_up - Bring the connection back up after being down
4359  * @vsi: the VSI being configured
4360  **/
4361 int i40e_up(struct i40e_vsi *vsi)
4362 {
4363         int err;
4364
4365         err = i40e_vsi_configure(vsi);
4366         if (!err)
4367                 err = i40e_up_complete(vsi);
4368
4369         return err;
4370 }
4371
4372 /**
4373  * i40e_down - Shutdown the connection processing
4374  * @vsi: the VSI being stopped
4375  **/
4376 void i40e_down(struct i40e_vsi *vsi)
4377 {
4378         int i;
4379
4380         /* It is assumed that the caller of this function
4381          * sets the vsi->state __I40E_DOWN bit.
4382          */
4383         if (vsi->netdev) {
4384                 netif_carrier_off(vsi->netdev);
4385                 netif_tx_disable(vsi->netdev);
4386         }
4387         i40e_vsi_disable_irq(vsi);
4388         i40e_vsi_control_rings(vsi, false);
4389         i40e_napi_disable_all(vsi);
4390
4391         for (i = 0; i < vsi->num_queue_pairs; i++) {
4392                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4393                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4394         }
4395 }
4396
4397 /**
4398  * i40e_setup_tc - configure multiple traffic classes
4399  * @netdev: net device to configure
4400  * @tc: number of traffic classes to enable
4401  **/
4402 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4403 {
4404         struct i40e_netdev_priv *np = netdev_priv(netdev);
4405         struct i40e_vsi *vsi = np->vsi;
4406         struct i40e_pf *pf = vsi->back;
4407         u8 enabled_tc = 0;
4408         int ret = -EINVAL;
4409         int i;
4410
4411         /* Check if DCB enabled to continue */
4412         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4413                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4414                 goto exit;
4415         }
4416
4417         /* Check if MFP enabled */
4418         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4419                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4420                 goto exit;
4421         }
4422
4423         /* Check whether tc count is within enabled limit */
4424         if (tc > i40e_pf_get_num_tc(pf)) {
4425                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4426                 goto exit;
4427         }
4428
4429         /* Generate TC map for number of tc requested */
4430         for (i = 0; i < tc; i++)
4431                 enabled_tc |= (1 << i);
4432
4433         /* Requesting same TC configuration as already enabled */
4434         if (enabled_tc == vsi->tc_config.enabled_tc)
4435                 return 0;
4436
4437         /* Quiesce VSI queues */
4438         i40e_quiesce_vsi(vsi);
4439
4440         /* Configure VSI for enabled TCs */
4441         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4442         if (ret) {
4443                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4444                             vsi->seid);
4445                 goto exit;
4446         }
4447
4448         /* Unquiesce VSI */
4449         i40e_unquiesce_vsi(vsi);
4450
4451 exit:
4452         return ret;
4453 }
4454
4455 /**
4456  * i40e_open - Called when a network interface is made active
4457  * @netdev: network interface device structure
4458  *
4459  * The open entry point is called when a network interface is made
4460  * active by the system (IFF_UP).  At this point all resources needed
4461  * for transmit and receive operations are allocated, the interrupt
4462  * handler is registered with the OS, the netdev watchdog subtask is
4463  * enabled, and the stack is notified that the interface is ready.
4464  *
4465  * Returns 0 on success, negative value on failure
4466  **/
4467 static int i40e_open(struct net_device *netdev)
4468 {
4469         struct i40e_netdev_priv *np = netdev_priv(netdev);
4470         struct i40e_vsi *vsi = np->vsi;
4471         struct i40e_pf *pf = vsi->back;
4472         int err;
4473
4474         /* disallow open during test or if eeprom is broken */
4475         if (test_bit(__I40E_TESTING, &pf->state) ||
4476             test_bit(__I40E_BAD_EEPROM, &pf->state))
4477                 return -EBUSY;
4478
4479         netif_carrier_off(netdev);
4480
4481         err = i40e_vsi_open(vsi);
4482         if (err)
4483                 return err;
4484
4485         /* configure global TSO hardware offload settings */
4486         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4487                                                        TCP_FLAG_FIN) >> 16);
4488         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4489                                                        TCP_FLAG_FIN |
4490                                                        TCP_FLAG_CWR) >> 16);
4491         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4492
4493 #ifdef CONFIG_I40E_VXLAN
4494         vxlan_get_rx_port(netdev);
4495 #endif
4496
4497         return 0;
4498 }
4499
4500 /**
4501  * i40e_vsi_open -
4502  * @vsi: the VSI to open
4503  *
4504  * Finish initialization of the VSI.
4505  *
4506  * Returns 0 on success, negative value on failure
4507  **/
4508 int i40e_vsi_open(struct i40e_vsi *vsi)
4509 {
4510         struct i40e_pf *pf = vsi->back;
4511         char int_name[IFNAMSIZ];
4512         int err;
4513
4514         /* allocate descriptors */
4515         err = i40e_vsi_setup_tx_resources(vsi);
4516         if (err)
4517                 goto err_setup_tx;
4518         err = i40e_vsi_setup_rx_resources(vsi);
4519         if (err)
4520                 goto err_setup_rx;
4521
4522         err = i40e_vsi_configure(vsi);
4523         if (err)
4524                 goto err_setup_rx;
4525
4526         if (vsi->netdev) {
4527                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4528                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4529                 err = i40e_vsi_request_irq(vsi, int_name);
4530                 if (err)
4531                         goto err_setup_rx;
4532
4533                 /* Notify the stack of the actual queue counts. */
4534                 err = netif_set_real_num_tx_queues(vsi->netdev,
4535                                                    vsi->num_queue_pairs);
4536                 if (err)
4537                         goto err_set_queues;
4538
4539                 err = netif_set_real_num_rx_queues(vsi->netdev,
4540                                                    vsi->num_queue_pairs);
4541                 if (err)
4542                         goto err_set_queues;
4543
4544         } else if (vsi->type == I40E_VSI_FDIR) {
4545                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4546                          dev_driver_string(&pf->pdev->dev));
4547                 err = i40e_vsi_request_irq(vsi, int_name);
4548         } else {
4549                 err = -EINVAL;
4550                 goto err_setup_rx;
4551         }
4552
4553         err = i40e_up_complete(vsi);
4554         if (err)
4555                 goto err_up_complete;
4556
4557         return 0;
4558
4559 err_up_complete:
4560         i40e_down(vsi);
4561 err_set_queues:
4562         i40e_vsi_free_irq(vsi);
4563 err_setup_rx:
4564         i40e_vsi_free_rx_resources(vsi);
4565 err_setup_tx:
4566         i40e_vsi_free_tx_resources(vsi);
4567         if (vsi == pf->vsi[pf->lan_vsi])
4568                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4569
4570         return err;
4571 }
4572
4573 /**
4574  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4575  * @pf: Pointer to pf
4576  *
4577  * This function destroys the hlist where all the Flow Director
4578  * filters were saved.
4579  **/
4580 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4581 {
4582         struct i40e_fdir_filter *filter;
4583         struct hlist_node *node2;
4584
4585         hlist_for_each_entry_safe(filter, node2,
4586                                   &pf->fdir_filter_list, fdir_node) {
4587                 hlist_del(&filter->fdir_node);
4588                 kfree(filter);
4589         }
4590         pf->fdir_pf_active_filters = 0;
4591 }
4592
4593 /**
4594  * i40e_close - Disables a network interface
4595  * @netdev: network interface device structure
4596  *
4597  * The close entry point is called when an interface is de-activated
4598  * by the OS.  The hardware is still under the driver's control, but
4599  * this netdev interface is disabled.
4600  *
4601  * Returns 0, this is not allowed to fail
4602  **/
4603 static int i40e_close(struct net_device *netdev)
4604 {
4605         struct i40e_netdev_priv *np = netdev_priv(netdev);
4606         struct i40e_vsi *vsi = np->vsi;
4607
4608         i40e_vsi_close(vsi);
4609
4610         return 0;
4611 }
4612
4613 /**
4614  * i40e_do_reset - Start a PF or Core Reset sequence
4615  * @pf: board private structure
4616  * @reset_flags: which reset is requested
4617  *
4618  * The essential difference in resets is that the PF Reset
4619  * doesn't clear the packet buffers, doesn't reset the PE
4620  * firmware, and doesn't bother the other PFs on the chip.
4621  **/
4622 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4623 {
4624         u32 val;
4625
4626         WARN_ON(in_interrupt());
4627
4628         if (i40e_check_asq_alive(&pf->hw))
4629                 i40e_vc_notify_reset(pf);
4630
4631         /* do the biggest reset indicated */
4632         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4633
4634                 /* Request a Global Reset
4635                  *
4636                  * This will start the chip's countdown to the actual full
4637                  * chip reset event, and a warning interrupt to be sent
4638                  * to all PFs, including the requestor.  Our handler
4639                  * for the warning interrupt will deal with the shutdown
4640                  * and recovery of the switch setup.
4641                  */
4642                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4643                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4644                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4645                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4646
4647         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4648
4649                 /* Request a Core Reset
4650                  *
4651                  * Same as Global Reset, except does *not* include the MAC/PHY
4652                  */
4653                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4654                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4655                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4656                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4657                 i40e_flush(&pf->hw);
4658
4659         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4660
4661                 /* Request a Firmware Reset
4662                  *
4663                  * Same as Global reset, plus restarting the
4664                  * embedded firmware engine.
4665                  */
4666                 /* enable EMP Reset */
4667                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4668                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4669                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4670
4671                 /* force the reset */
4672                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4673                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4674                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4675                 i40e_flush(&pf->hw);
4676
4677         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4678
4679                 /* Request a PF Reset
4680                  *
4681                  * Resets only the PF-specific registers
4682                  *
4683                  * This goes directly to the tear-down and rebuild of
4684                  * the switch, since we need to do all the recovery as
4685                  * for the Core Reset.
4686                  */
4687                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4688                 i40e_handle_reset_warning(pf);
4689
4690         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4691                 int v;
4692
4693                 /* Find the VSI(s) that requested a re-init */
4694                 dev_info(&pf->pdev->dev,
4695                          "VSI reinit requested\n");
4696                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4697                         struct i40e_vsi *vsi = pf->vsi[v];
4698                         if (vsi != NULL &&
4699                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4700                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4701                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4702                         }
4703                 }
4704
4705                 /* no further action needed, so return now */
4706                 return;
4707         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4708                 int v;
4709
4710                 /* Find the VSI(s) that needs to be brought down */
4711                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4712                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4713                         struct i40e_vsi *vsi = pf->vsi[v];
4714                         if (vsi != NULL &&
4715                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4716                                 set_bit(__I40E_DOWN, &vsi->state);
4717                                 i40e_down(vsi);
4718                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4719                         }
4720                 }
4721
4722                 /* no further action needed, so return now */
4723                 return;
4724         } else {
4725                 dev_info(&pf->pdev->dev,
4726                          "bad reset request 0x%08x\n", reset_flags);
4727                 return;
4728         }
4729 }
4730
4731 #ifdef CONFIG_I40E_DCB
4732 /**
4733  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4734  * @pf: board private structure
4735  * @old_cfg: current DCB config
4736  * @new_cfg: new DCB config
4737  **/
4738 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4739                             struct i40e_dcbx_config *old_cfg,
4740                             struct i40e_dcbx_config *new_cfg)
4741 {
4742         bool need_reconfig = false;
4743
4744         /* Check if ETS configuration has changed */
4745         if (memcmp(&new_cfg->etscfg,
4746                    &old_cfg->etscfg,
4747                    sizeof(new_cfg->etscfg))) {
4748                 /* If Priority Table has changed reconfig is needed */
4749                 if (memcmp(&new_cfg->etscfg.prioritytable,
4750                            &old_cfg->etscfg.prioritytable,
4751                            sizeof(new_cfg->etscfg.prioritytable))) {
4752                         need_reconfig = true;
4753                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4754                 }
4755
4756                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4757                            &old_cfg->etscfg.tcbwtable,
4758                            sizeof(new_cfg->etscfg.tcbwtable)))
4759                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4760
4761                 if (memcmp(&new_cfg->etscfg.tsatable,
4762                            &old_cfg->etscfg.tsatable,
4763                            sizeof(new_cfg->etscfg.tsatable)))
4764                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4765         }
4766
4767         /* Check if PFC configuration has changed */
4768         if (memcmp(&new_cfg->pfc,
4769                    &old_cfg->pfc,
4770                    sizeof(new_cfg->pfc))) {
4771                 need_reconfig = true;
4772                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4773         }
4774
4775         /* Check if APP Table has changed */
4776         if (memcmp(&new_cfg->app,
4777                    &old_cfg->app,
4778                    sizeof(new_cfg->app))) {
4779                 need_reconfig = true;
4780                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4781         }
4782
4783         return need_reconfig;
4784 }
4785
4786 /**
4787  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4788  * @pf: board private structure
4789  * @e: event info posted on ARQ
4790  **/
4791 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4792                                   struct i40e_arq_event_info *e)
4793 {
4794         struct i40e_aqc_lldp_get_mib *mib =
4795                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4796         struct i40e_hw *hw = &pf->hw;
4797         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4798         struct i40e_dcbx_config tmp_dcbx_cfg;
4799         bool need_reconfig = false;
4800         int ret = 0;
4801         u8 type;
4802
4803         /* Not DCB capable or capability disabled */
4804         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
4805                 return ret;
4806
4807         /* Ignore if event is not for Nearest Bridge */
4808         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4809                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4810         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4811                 return ret;
4812
4813         /* Check MIB Type and return if event for Remote MIB update */
4814         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4815         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4816                 /* Update the remote cached instance and return */
4817                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4818                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4819                                 &hw->remote_dcbx_config);
4820                 goto exit;
4821         }
4822
4823         /* Convert/store the DCBX data from LLDPDU temporarily */
4824         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4825         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4826         if (ret) {
4827                 /* Error in LLDPDU parsing return */
4828                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4829                 goto exit;
4830         }
4831
4832         /* No change detected in DCBX configs */
4833         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4834                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4835                 goto exit;
4836         }
4837
4838         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4839
4840         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4841
4842         /* Overwrite the new configuration */
4843         *dcbx_cfg = tmp_dcbx_cfg;
4844
4845         if (!need_reconfig)
4846                 goto exit;
4847
4848         /* Enable DCB tagging only when more than one TC */
4849         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
4850                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4851         else
4852                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
4853
4854         /* Reconfiguration needed quiesce all VSIs */
4855         i40e_pf_quiesce_all_vsi(pf);
4856
4857         /* Changes in configuration update VEB/VSI */
4858         i40e_dcb_reconfigure(pf);
4859
4860         i40e_pf_unquiesce_all_vsi(pf);
4861 exit:
4862         return ret;
4863 }
4864 #endif /* CONFIG_I40E_DCB */
4865
4866 /**
4867  * i40e_do_reset_safe - Protected reset path for userland calls.
4868  * @pf: board private structure
4869  * @reset_flags: which reset is requested
4870  *
4871  **/
4872 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4873 {
4874         rtnl_lock();
4875         i40e_do_reset(pf, reset_flags);
4876         rtnl_unlock();
4877 }
4878
4879 /**
4880  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4881  * @pf: board private structure
4882  * @e: event info posted on ARQ
4883  *
4884  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4885  * and VF queues
4886  **/
4887 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4888                                            struct i40e_arq_event_info *e)
4889 {
4890         struct i40e_aqc_lan_overflow *data =
4891                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4892         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4893         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4894         struct i40e_hw *hw = &pf->hw;
4895         struct i40e_vf *vf;
4896         u16 vf_id;
4897
4898         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4899                 queue, qtx_ctl);
4900
4901         /* Queue belongs to VF, find the VF and issue VF reset */
4902         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4903             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4904                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4905                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4906                 vf_id -= hw->func_caps.vf_base_id;
4907                 vf = &pf->vf[vf_id];
4908                 i40e_vc_notify_vf_reset(vf);
4909                 /* Allow VF to process pending reset notification */
4910                 msleep(20);
4911                 i40e_reset_vf(vf, false);
4912         }
4913 }
4914
4915 /**
4916  * i40e_service_event_complete - Finish up the service event
4917  * @pf: board private structure
4918  **/
4919 static void i40e_service_event_complete(struct i40e_pf *pf)
4920 {
4921         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4922
4923         /* flush memory to make sure state is correct before next watchog */
4924         smp_mb__before_atomic();
4925         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4926 }
4927
4928 /**
4929  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4930  * @pf: board private structure
4931  **/
4932 int i40e_get_current_fd_count(struct i40e_pf *pf)
4933 {
4934         int val, fcnt_prog;
4935         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4936         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4937                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4938                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4939         return fcnt_prog;
4940 }
4941
4942 /**
4943  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4944  * @pf: board private structure
4945  **/
4946 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4947 {
4948         u32 fcnt_prog, fcnt_avail;
4949
4950         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4951          * to re-enable
4952          */
4953         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4954             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4955                 return;
4956         fcnt_prog = i40e_get_current_fd_count(pf);
4957         fcnt_avail = i40e_get_fd_cnt_all(pf);
4958         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4959                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4960                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4961                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4962                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4963                 }
4964         }
4965         /* Wait for some more space to be available to turn on ATR */
4966         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4967                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4968                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4969                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4970                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4971                 }
4972         }
4973 }
4974
4975 /**
4976  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4977  * @pf: board private structure
4978  **/
4979 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4980 {
4981         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4982                 return;
4983
4984         /* if interface is down do nothing */
4985         if (test_bit(__I40E_DOWN, &pf->state))
4986                 return;
4987         i40e_fdir_check_and_reenable(pf);
4988
4989         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4990             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4991                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4992 }
4993
4994 /**
4995  * i40e_vsi_link_event - notify VSI of a link event
4996  * @vsi: vsi to be notified
4997  * @link_up: link up or down
4998  **/
4999 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5000 {
5001         if (!vsi)
5002                 return;
5003
5004         switch (vsi->type) {
5005         case I40E_VSI_MAIN:
5006                 if (!vsi->netdev || !vsi->netdev_registered)
5007                         break;
5008
5009                 if (link_up) {
5010                         netif_carrier_on(vsi->netdev);
5011                         netif_tx_wake_all_queues(vsi->netdev);
5012                 } else {
5013                         netif_carrier_off(vsi->netdev);
5014                         netif_tx_stop_all_queues(vsi->netdev);
5015                 }
5016                 break;
5017
5018         case I40E_VSI_SRIOV:
5019                 break;
5020
5021         case I40E_VSI_VMDQ2:
5022         case I40E_VSI_CTRL:
5023         case I40E_VSI_MIRROR:
5024         default:
5025                 /* there is no notification for other VSIs */
5026                 break;
5027         }
5028 }
5029
5030 /**
5031  * i40e_veb_link_event - notify elements on the veb of a link event
5032  * @veb: veb to be notified
5033  * @link_up: link up or down
5034  **/
5035 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5036 {
5037         struct i40e_pf *pf;
5038         int i;
5039
5040         if (!veb || !veb->pf)
5041                 return;
5042         pf = veb->pf;
5043
5044         /* depth first... */
5045         for (i = 0; i < I40E_MAX_VEB; i++)
5046                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5047                         i40e_veb_link_event(pf->veb[i], link_up);
5048
5049         /* ... now the local VSIs */
5050         for (i = 0; i < pf->num_alloc_vsi; i++)
5051                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5052                         i40e_vsi_link_event(pf->vsi[i], link_up);
5053 }
5054
5055 /**
5056  * i40e_link_event - Update netif_carrier status
5057  * @pf: board private structure
5058  **/
5059 static void i40e_link_event(struct i40e_pf *pf)
5060 {
5061         bool new_link, old_link;
5062
5063         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
5064         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5065
5066         if (new_link == old_link)
5067                 return;
5068         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
5069                 i40e_print_link_message(pf->vsi[pf->lan_vsi], new_link);
5070
5071         /* Notify the base of the switch tree connected to
5072          * the link.  Floating VEBs are not notified.
5073          */
5074         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5075                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5076         else
5077                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
5078
5079         if (pf->vf)
5080                 i40e_vc_notify_link_state(pf);
5081
5082         if (pf->flags & I40E_FLAG_PTP)
5083                 i40e_ptp_set_increment(pf);
5084 }
5085
5086 /**
5087  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5088  * @pf: board private structure
5089  *
5090  * Set the per-queue flags to request a check for stuck queues in the irq
5091  * clean functions, then force interrupts to be sure the irq clean is called.
5092  **/
5093 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5094 {
5095         int i, v;
5096
5097         /* If we're down or resetting, just bail */
5098         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5099                 return;
5100
5101         /* for each VSI/netdev
5102          *     for each Tx queue
5103          *         set the check flag
5104          *     for each q_vector
5105          *         force an interrupt
5106          */
5107         for (v = 0; v < pf->num_alloc_vsi; v++) {
5108                 struct i40e_vsi *vsi = pf->vsi[v];
5109                 int armed = 0;
5110
5111                 if (!pf->vsi[v] ||
5112                     test_bit(__I40E_DOWN, &vsi->state) ||
5113                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5114                         continue;
5115
5116                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5117                         set_check_for_tx_hang(vsi->tx_rings[i]);
5118                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5119                                      &vsi->tx_rings[i]->state))
5120                                 armed++;
5121                 }
5122
5123                 if (armed) {
5124                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5125                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5126                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5127                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5128                         } else {
5129                                 u16 vec = vsi->base_vector - 1;
5130                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5131                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5132                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5133                                         wr32(&vsi->back->hw,
5134                                              I40E_PFINT_DYN_CTLN(vec), val);
5135                         }
5136                         i40e_flush(&vsi->back->hw);
5137                 }
5138         }
5139 }
5140
5141 /**
5142  * i40e_watchdog_subtask - Check and bring link up
5143  * @pf: board private structure
5144  **/
5145 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5146 {
5147         int i;
5148
5149         /* if interface is down do nothing */
5150         if (test_bit(__I40E_DOWN, &pf->state) ||
5151             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5152                 return;
5153
5154         /* Update the stats for active netdevs so the network stack
5155          * can look at updated numbers whenever it cares to
5156          */
5157         for (i = 0; i < pf->num_alloc_vsi; i++)
5158                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5159                         i40e_update_stats(pf->vsi[i]);
5160
5161         /* Update the stats for the active switching components */
5162         for (i = 0; i < I40E_MAX_VEB; i++)
5163                 if (pf->veb[i])
5164                         i40e_update_veb_stats(pf->veb[i]);
5165
5166         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5167 }
5168
5169 /**
5170  * i40e_reset_subtask - Set up for resetting the device and driver
5171  * @pf: board private structure
5172  **/
5173 static void i40e_reset_subtask(struct i40e_pf *pf)
5174 {
5175         u32 reset_flags = 0;
5176
5177         rtnl_lock();
5178         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5179                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5180                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5181         }
5182         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5183                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5184                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5185         }
5186         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5187                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5188                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5189         }
5190         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5191                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5192                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5193         }
5194         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5195                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5196                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5197         }
5198
5199         /* If there's a recovery already waiting, it takes
5200          * precedence before starting a new reset sequence.
5201          */
5202         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5203                 i40e_handle_reset_warning(pf);
5204                 goto unlock;
5205         }
5206
5207         /* If we're already down or resetting, just bail */
5208         if (reset_flags &&
5209             !test_bit(__I40E_DOWN, &pf->state) &&
5210             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5211                 i40e_do_reset(pf, reset_flags);
5212
5213 unlock:
5214         rtnl_unlock();
5215 }
5216
5217 /**
5218  * i40e_handle_link_event - Handle link event
5219  * @pf: board private structure
5220  * @e: event info posted on ARQ
5221  **/
5222 static void i40e_handle_link_event(struct i40e_pf *pf,
5223                                    struct i40e_arq_event_info *e)
5224 {
5225         struct i40e_hw *hw = &pf->hw;
5226         struct i40e_aqc_get_link_status *status =
5227                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5228         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5229
5230         /* save off old link status information */
5231         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5232                sizeof(pf->hw.phy.link_info_old));
5233
5234         /* update link status */
5235         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
5236         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
5237         hw_link_info->link_info = status->link_info;
5238         hw_link_info->an_info = status->an_info;
5239         hw_link_info->ext_info = status->ext_info;
5240         hw_link_info->lse_enable =
5241                 le16_to_cpu(status->command_flags) &
5242                             I40E_AQ_LSE_ENABLE;
5243
5244         /* process the event */
5245         i40e_link_event(pf);
5246
5247         /* Do a new status request to re-enable LSE reporting
5248          * and load new status information into the hw struct,
5249          * then see if the status changed while processing the
5250          * initial event.
5251          */
5252         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5253         i40e_link_event(pf);
5254 }
5255
5256 /**
5257  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5258  * @pf: board private structure
5259  **/
5260 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5261 {
5262         struct i40e_arq_event_info event;
5263         struct i40e_hw *hw = &pf->hw;
5264         u16 pending, i = 0;
5265         i40e_status ret;
5266         u16 opcode;
5267         u32 oldval;
5268         u32 val;
5269
5270         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5271                 return;
5272
5273         /* check for error indications */
5274         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5275         oldval = val;
5276         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5277                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5278                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5279         }
5280         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5281                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5282                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5283         }
5284         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5285                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5286                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5287         }
5288         if (oldval != val)
5289                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5290
5291         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5292         oldval = val;
5293         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5294                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5295                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5296         }
5297         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5298                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5299                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5300         }
5301         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5302                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5303                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5304         }
5305         if (oldval != val)
5306                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5307
5308         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5309         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5310         if (!event.msg_buf)
5311                 return;
5312
5313         do {
5314                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5315                 ret = i40e_clean_arq_element(hw, &event, &pending);
5316                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5317                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5318                         break;
5319                 } else if (ret) {
5320                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5321                         break;
5322                 }
5323
5324                 opcode = le16_to_cpu(event.desc.opcode);
5325                 switch (opcode) {
5326
5327                 case i40e_aqc_opc_get_link_status:
5328                         i40e_handle_link_event(pf, &event);
5329                         break;
5330                 case i40e_aqc_opc_send_msg_to_pf:
5331                         ret = i40e_vc_process_vf_msg(pf,
5332                                         le16_to_cpu(event.desc.retval),
5333                                         le32_to_cpu(event.desc.cookie_high),
5334                                         le32_to_cpu(event.desc.cookie_low),
5335                                         event.msg_buf,
5336                                         event.msg_size);
5337                         break;
5338                 case i40e_aqc_opc_lldp_update_mib:
5339                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5340 #ifdef CONFIG_I40E_DCB
5341                         rtnl_lock();
5342                         ret = i40e_handle_lldp_event(pf, &event);
5343                         rtnl_unlock();
5344 #endif /* CONFIG_I40E_DCB */
5345                         break;
5346                 case i40e_aqc_opc_event_lan_overflow:
5347                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5348                         i40e_handle_lan_overflow_event(pf, &event);
5349                         break;
5350                 case i40e_aqc_opc_send_msg_to_peer:
5351                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5352                         break;
5353                 default:
5354                         dev_info(&pf->pdev->dev,
5355                                  "ARQ Error: Unknown event 0x%04x received\n",
5356                                  opcode);
5357                         break;
5358                 }
5359         } while (pending && (i++ < pf->adminq_work_limit));
5360
5361         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5362         /* re-enable Admin queue interrupt cause */
5363         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5364         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5365         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5366         i40e_flush(hw);
5367
5368         kfree(event.msg_buf);
5369 }
5370
5371 /**
5372  * i40e_verify_eeprom - make sure eeprom is good to use
5373  * @pf: board private structure
5374  **/
5375 static void i40e_verify_eeprom(struct i40e_pf *pf)
5376 {
5377         int err;
5378
5379         err = i40e_diag_eeprom_test(&pf->hw);
5380         if (err) {
5381                 /* retry in case of garbage read */
5382                 err = i40e_diag_eeprom_test(&pf->hw);
5383                 if (err) {
5384                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5385                                  err);
5386                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5387                 }
5388         }
5389
5390         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5391                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5392                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5393         }
5394 }
5395
5396 /**
5397  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5398  * @veb: pointer to the VEB instance
5399  *
5400  * This is a recursive function that first builds the attached VSIs then
5401  * recurses in to build the next layer of VEB.  We track the connections
5402  * through our own index numbers because the seid's from the HW could
5403  * change across the reset.
5404  **/
5405 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5406 {
5407         struct i40e_vsi *ctl_vsi = NULL;
5408         struct i40e_pf *pf = veb->pf;
5409         int v, veb_idx;
5410         int ret;
5411
5412         /* build VSI that owns this VEB, temporarily attached to base VEB */
5413         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5414                 if (pf->vsi[v] &&
5415                     pf->vsi[v]->veb_idx == veb->idx &&
5416                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5417                         ctl_vsi = pf->vsi[v];
5418                         break;
5419                 }
5420         }
5421         if (!ctl_vsi) {
5422                 dev_info(&pf->pdev->dev,
5423                          "missing owner VSI for veb_idx %d\n", veb->idx);
5424                 ret = -ENOENT;
5425                 goto end_reconstitute;
5426         }
5427         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5428                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5429         ret = i40e_add_vsi(ctl_vsi);
5430         if (ret) {
5431                 dev_info(&pf->pdev->dev,
5432                          "rebuild of owner VSI failed: %d\n", ret);
5433                 goto end_reconstitute;
5434         }
5435         i40e_vsi_reset_stats(ctl_vsi);
5436
5437         /* create the VEB in the switch and move the VSI onto the VEB */
5438         ret = i40e_add_veb(veb, ctl_vsi);
5439         if (ret)
5440                 goto end_reconstitute;
5441
5442         /* create the remaining VSIs attached to this VEB */
5443         for (v = 0; v < pf->num_alloc_vsi; v++) {
5444                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5445                         continue;
5446
5447                 if (pf->vsi[v]->veb_idx == veb->idx) {
5448                         struct i40e_vsi *vsi = pf->vsi[v];
5449                         vsi->uplink_seid = veb->seid;
5450                         ret = i40e_add_vsi(vsi);
5451                         if (ret) {
5452                                 dev_info(&pf->pdev->dev,
5453                                          "rebuild of vsi_idx %d failed: %d\n",
5454                                          v, ret);
5455                                 goto end_reconstitute;
5456                         }
5457                         i40e_vsi_reset_stats(vsi);
5458                 }
5459         }
5460
5461         /* create any VEBs attached to this VEB - RECURSION */
5462         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5463                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5464                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5465                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5466                         if (ret)
5467                                 break;
5468                 }
5469         }
5470
5471 end_reconstitute:
5472         return ret;
5473 }
5474
5475 /**
5476  * i40e_get_capabilities - get info about the HW
5477  * @pf: the PF struct
5478  **/
5479 static int i40e_get_capabilities(struct i40e_pf *pf)
5480 {
5481         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5482         u16 data_size;
5483         int buf_len;
5484         int err;
5485
5486         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5487         do {
5488                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5489                 if (!cap_buf)
5490                         return -ENOMEM;
5491
5492                 /* this loads the data into the hw struct for us */
5493                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5494                                             &data_size,
5495                                             i40e_aqc_opc_list_func_capabilities,
5496                                             NULL);
5497                 /* data loaded, buffer no longer needed */
5498                 kfree(cap_buf);
5499
5500                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5501                         /* retry with a larger buffer */
5502                         buf_len = data_size;
5503                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5504                         dev_info(&pf->pdev->dev,
5505                                  "capability discovery failed: aq=%d\n",
5506                                  pf->hw.aq.asq_last_status);
5507                         return -ENODEV;
5508                 }
5509         } while (err);
5510
5511         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5512             (pf->hw.aq.fw_maj_ver < 2)) {
5513                 pf->hw.func_caps.num_msix_vectors++;
5514                 pf->hw.func_caps.num_msix_vectors_vf++;
5515         }
5516
5517         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5518                 dev_info(&pf->pdev->dev,
5519                          "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",
5520                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5521                          pf->hw.func_caps.num_msix_vectors,
5522                          pf->hw.func_caps.num_msix_vectors_vf,
5523                          pf->hw.func_caps.fd_filters_guaranteed,
5524                          pf->hw.func_caps.fd_filters_best_effort,
5525                          pf->hw.func_caps.num_tx_qp,
5526                          pf->hw.func_caps.num_vsis);
5527
5528 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5529                        + pf->hw.func_caps.num_vfs)
5530         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5531                 dev_info(&pf->pdev->dev,
5532                          "got num_vsis %d, setting num_vsis to %d\n",
5533                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5534                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5535         }
5536
5537         return 0;
5538 }
5539
5540 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5541
5542 /**
5543  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5544  * @pf: board private structure
5545  **/
5546 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5547 {
5548         struct i40e_vsi *vsi;
5549         int i;
5550
5551         /* quick workaround for an NVM issue that leaves a critical register
5552          * uninitialized
5553          */
5554         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5555                 static const u32 hkey[] = {
5556                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5557                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5558                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5559                         0x95b3a76d};
5560
5561                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5562                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5563         }
5564
5565         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5566                 return;
5567
5568         /* find existing VSI and see if it needs configuring */
5569         vsi = NULL;
5570         for (i = 0; i < pf->num_alloc_vsi; i++) {
5571                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5572                         vsi = pf->vsi[i];
5573                         break;
5574                 }
5575         }
5576
5577         /* create a new VSI if none exists */
5578         if (!vsi) {
5579                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5580                                      pf->vsi[pf->lan_vsi]->seid, 0);
5581                 if (!vsi) {
5582                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5583                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5584                         return;
5585                 }
5586         }
5587
5588         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5589 }
5590
5591 /**
5592  * i40e_fdir_teardown - release the Flow Director resources
5593  * @pf: board private structure
5594  **/
5595 static void i40e_fdir_teardown(struct i40e_pf *pf)
5596 {
5597         int i;
5598
5599         i40e_fdir_filter_exit(pf);
5600         for (i = 0; i < pf->num_alloc_vsi; i++) {
5601                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5602                         i40e_vsi_release(pf->vsi[i]);
5603                         break;
5604                 }
5605         }
5606 }
5607
5608 /**
5609  * i40e_prep_for_reset - prep for the core to reset
5610  * @pf: board private structure
5611  *
5612  * Close up the VFs and other things in prep for pf Reset.
5613   **/
5614 static void i40e_prep_for_reset(struct i40e_pf *pf)
5615 {
5616         struct i40e_hw *hw = &pf->hw;
5617         i40e_status ret = 0;
5618         u32 v;
5619
5620         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5621         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5622                 return;
5623
5624         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5625
5626         /* quiesce the VSIs and their queues that are not already DOWN */
5627         i40e_pf_quiesce_all_vsi(pf);
5628
5629         for (v = 0; v < pf->num_alloc_vsi; v++) {
5630                 if (pf->vsi[v])
5631                         pf->vsi[v]->seid = 0;
5632         }
5633
5634         i40e_shutdown_adminq(&pf->hw);
5635
5636         /* call shutdown HMC */
5637         if (hw->hmc.hmc_obj) {
5638                 ret = i40e_shutdown_lan_hmc(hw);
5639                 if (ret)
5640                         dev_warn(&pf->pdev->dev,
5641                                  "shutdown_lan_hmc failed: %d\n", ret);
5642         }
5643 }
5644
5645 /**
5646  * i40e_send_version - update firmware with driver version
5647  * @pf: PF struct
5648  */
5649 static void i40e_send_version(struct i40e_pf *pf)
5650 {
5651         struct i40e_driver_version dv;
5652
5653         dv.major_version = DRV_VERSION_MAJOR;
5654         dv.minor_version = DRV_VERSION_MINOR;
5655         dv.build_version = DRV_VERSION_BUILD;
5656         dv.subbuild_version = 0;
5657         strncpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5658         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5659 }
5660
5661 /**
5662  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5663  * @pf: board private structure
5664  * @reinit: if the Main VSI needs to re-initialized.
5665  **/
5666 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5667 {
5668         struct i40e_hw *hw = &pf->hw;
5669         i40e_status ret;
5670         u32 v;
5671
5672         /* Now we wait for GRST to settle out.
5673          * We don't have to delete the VEBs or VSIs from the hw switch
5674          * because the reset will make them disappear.
5675          */
5676         ret = i40e_pf_reset(hw);
5677         if (ret) {
5678                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5679                 goto end_core_reset;
5680         }
5681         pf->pfr_count++;
5682
5683         if (test_bit(__I40E_DOWN, &pf->state))
5684                 goto end_core_reset;
5685         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5686
5687         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5688         ret = i40e_init_adminq(&pf->hw);
5689         if (ret) {
5690                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5691                 goto end_core_reset;
5692         }
5693
5694         /* re-verify the eeprom if we just had an EMP reset */
5695         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5696                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5697                 i40e_verify_eeprom(pf);
5698         }
5699
5700         i40e_clear_pxe_mode(hw);
5701         ret = i40e_get_capabilities(pf);
5702         if (ret) {
5703                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5704                          ret);
5705                 goto end_core_reset;
5706         }
5707
5708         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5709                                 hw->func_caps.num_rx_qp,
5710                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5711         if (ret) {
5712                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5713                 goto end_core_reset;
5714         }
5715         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5716         if (ret) {
5717                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5718                 goto end_core_reset;
5719         }
5720
5721 #ifdef CONFIG_I40E_DCB
5722         ret = i40e_init_pf_dcb(pf);
5723         if (ret) {
5724                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5725                 goto end_core_reset;
5726         }
5727 #endif /* CONFIG_I40E_DCB */
5728
5729         /* do basic switch setup */
5730         ret = i40e_setup_pf_switch(pf, reinit);
5731         if (ret)
5732                 goto end_core_reset;
5733
5734         /* Rebuild the VSIs and VEBs that existed before reset.
5735          * They are still in our local switch element arrays, so only
5736          * need to rebuild the switch model in the HW.
5737          *
5738          * If there were VEBs but the reconstitution failed, we'll try
5739          * try to recover minimal use by getting the basic PF VSI working.
5740          */
5741         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5742                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5743                 /* find the one VEB connected to the MAC, and find orphans */
5744                 for (v = 0; v < I40E_MAX_VEB; v++) {
5745                         if (!pf->veb[v])
5746                                 continue;
5747
5748                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5749                             pf->veb[v]->uplink_seid == 0) {
5750                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5751
5752                                 if (!ret)
5753                                         continue;
5754
5755                                 /* If Main VEB failed, we're in deep doodoo,
5756                                  * so give up rebuilding the switch and set up
5757                                  * for minimal rebuild of PF VSI.
5758                                  * If orphan failed, we'll report the error
5759                                  * but try to keep going.
5760                                  */
5761                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5762                                         dev_info(&pf->pdev->dev,
5763                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5764                                                  ret);
5765                                         pf->vsi[pf->lan_vsi]->uplink_seid
5766                                                                 = pf->mac_seid;
5767                                         break;
5768                                 } else if (pf->veb[v]->uplink_seid == 0) {
5769                                         dev_info(&pf->pdev->dev,
5770                                                  "rebuild of orphan VEB failed: %d\n",
5771                                                  ret);
5772                                 }
5773                         }
5774                 }
5775         }
5776
5777         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5778                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5779                 /* no VEB, so rebuild only the Main VSI */
5780                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5781                 if (ret) {
5782                         dev_info(&pf->pdev->dev,
5783                                  "rebuild of Main VSI failed: %d\n", ret);
5784                         goto end_core_reset;
5785                 }
5786         }
5787
5788         /* reinit the misc interrupt */
5789         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5790                 ret = i40e_setup_misc_vector(pf);
5791
5792         /* restart the VSIs that were rebuilt and running before the reset */
5793         i40e_pf_unquiesce_all_vsi(pf);
5794
5795         if (pf->num_alloc_vfs) {
5796                 for (v = 0; v < pf->num_alloc_vfs; v++)
5797                         i40e_reset_vf(&pf->vf[v], true);
5798         }
5799
5800         /* tell the firmware that we're starting */
5801         i40e_send_version(pf);
5802
5803 end_core_reset:
5804         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5805 }
5806
5807 /**
5808  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5809  * @pf: board private structure
5810  *
5811  * Close up the VFs and other things in prep for a Core Reset,
5812  * then get ready to rebuild the world.
5813  **/
5814 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5815 {
5816         i40e_prep_for_reset(pf);
5817         i40e_reset_and_rebuild(pf, false);
5818 }
5819
5820 /**
5821  * i40e_handle_mdd_event
5822  * @pf: pointer to the pf structure
5823  *
5824  * Called from the MDD irq handler to identify possibly malicious vfs
5825  **/
5826 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5827 {
5828         struct i40e_hw *hw = &pf->hw;
5829         bool mdd_detected = false;
5830         struct i40e_vf *vf;
5831         u32 reg;
5832         int i;
5833
5834         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5835                 return;
5836
5837         /* find what triggered the MDD event */
5838         reg = rd32(hw, I40E_GL_MDET_TX);
5839         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5840                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
5841                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
5842                 u8 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
5843                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
5844                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT) >>
5845                                 I40E_GL_MDET_TX_EVENT_SHIFT;
5846                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
5847                                 I40E_GL_MDET_TX_QUEUE_SHIFT;
5848                 dev_info(&pf->pdev->dev,
5849                          "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
5850                          event, queue, pf_num, vf_num);
5851                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5852                 mdd_detected = true;
5853         }
5854         reg = rd32(hw, I40E_GL_MDET_RX);
5855         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5856                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
5857                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
5858                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT) >>
5859                                 I40E_GL_MDET_RX_EVENT_SHIFT;
5860                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
5861                                 I40E_GL_MDET_RX_QUEUE_SHIFT;
5862                 dev_info(&pf->pdev->dev,
5863                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5864                          event, queue, func);
5865                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5866                 mdd_detected = true;
5867         }
5868
5869         /* see if one of the VFs needs its hand slapped */
5870         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5871                 vf = &(pf->vf[i]);
5872                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5873                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5874                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5875                         vf->num_mdd_events++;
5876                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5877                 }
5878
5879                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5880                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5881                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5882                         vf->num_mdd_events++;
5883                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5884                 }
5885
5886                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5887                         dev_info(&pf->pdev->dev,
5888                                  "Too many MDD events on VF %d, disabled\n", i);
5889                         dev_info(&pf->pdev->dev,
5890                                  "Use PF Control I/F to re-enable the VF\n");
5891                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5892                 }
5893         }
5894
5895         /* re-enable mdd interrupt cause */
5896         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5897         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5898         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5899         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5900         i40e_flush(hw);
5901 }
5902
5903 #ifdef CONFIG_I40E_VXLAN
5904 /**
5905  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5906  * @pf: board private structure
5907  **/
5908 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5909 {
5910         struct i40e_hw *hw = &pf->hw;
5911         i40e_status ret;
5912         u8 filter_index;
5913         __be16 port;
5914         int i;
5915
5916         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5917                 return;
5918
5919         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5920
5921         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5922                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5923                         pf->pending_vxlan_bitmap &= ~(1 << i);
5924                         port = pf->vxlan_ports[i];
5925                         ret = port ?
5926                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5927                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5928                                                      &filter_index, NULL)
5929                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5930
5931                         if (ret) {
5932                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5933                                          port ? "adding" : "deleting",
5934                                          ntohs(port), port ? i : i);
5935
5936                                 pf->vxlan_ports[i] = 0;
5937                         } else {
5938                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5939                                          port ? "Added" : "Deleted",
5940                                          ntohs(port), port ? i : filter_index);
5941                         }
5942                 }
5943         }
5944 }
5945
5946 #endif
5947 /**
5948  * i40e_service_task - Run the driver's async subtasks
5949  * @work: pointer to work_struct containing our data
5950  **/
5951 static void i40e_service_task(struct work_struct *work)
5952 {
5953         struct i40e_pf *pf = container_of(work,
5954                                           struct i40e_pf,
5955                                           service_task);
5956         unsigned long start_time = jiffies;
5957
5958         /* don't bother with service tasks if a reset is in progress */
5959         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
5960                 i40e_service_event_complete(pf);
5961                 return;
5962         }
5963
5964         i40e_reset_subtask(pf);
5965         i40e_handle_mdd_event(pf);
5966         i40e_vc_process_vflr_event(pf);
5967         i40e_watchdog_subtask(pf);
5968         i40e_fdir_reinit_subtask(pf);
5969         i40e_check_hang_subtask(pf);
5970         i40e_sync_filters_subtask(pf);
5971 #ifdef CONFIG_I40E_VXLAN
5972         i40e_sync_vxlan_filters_subtask(pf);
5973 #endif
5974         i40e_clean_adminq_subtask(pf);
5975
5976         i40e_service_event_complete(pf);
5977
5978         /* If the tasks have taken longer than one timer cycle or there
5979          * is more work to be done, reschedule the service task now
5980          * rather than wait for the timer to tick again.
5981          */
5982         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5983             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5984             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5985             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5986                 i40e_service_event_schedule(pf);
5987 }
5988
5989 /**
5990  * i40e_service_timer - timer callback
5991  * @data: pointer to PF struct
5992  **/
5993 static void i40e_service_timer(unsigned long data)
5994 {
5995         struct i40e_pf *pf = (struct i40e_pf *)data;
5996
5997         mod_timer(&pf->service_timer,
5998                   round_jiffies(jiffies + pf->service_timer_period));
5999         i40e_service_event_schedule(pf);
6000 }
6001
6002 /**
6003  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6004  * @vsi: the VSI being configured
6005  **/
6006 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6007 {
6008         struct i40e_pf *pf = vsi->back;
6009
6010         switch (vsi->type) {
6011         case I40E_VSI_MAIN:
6012                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6013                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6014                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6015                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6016                         vsi->num_q_vectors = pf->num_lan_msix;
6017                 else
6018                         vsi->num_q_vectors = 1;
6019
6020                 break;
6021
6022         case I40E_VSI_FDIR:
6023                 vsi->alloc_queue_pairs = 1;
6024                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6025                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6026                 vsi->num_q_vectors = 1;
6027                 break;
6028
6029         case I40E_VSI_VMDQ2:
6030                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6031                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6032                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6033                 vsi->num_q_vectors = pf->num_vmdq_msix;
6034                 break;
6035
6036         case I40E_VSI_SRIOV:
6037                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6038                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6039                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6040                 break;
6041
6042         default:
6043                 WARN_ON(1);
6044                 return -ENODATA;
6045         }
6046
6047         return 0;
6048 }
6049
6050 /**
6051  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6052  * @type: VSI pointer
6053  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6054  *
6055  * On error: returns error code (negative)
6056  * On success: returns 0
6057  **/
6058 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6059 {
6060         int size;
6061         int ret = 0;
6062
6063         /* allocate memory for both Tx and Rx ring pointers */
6064         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6065         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6066         if (!vsi->tx_rings)
6067                 return -ENOMEM;
6068         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6069
6070         if (alloc_qvectors) {
6071                 /* allocate memory for q_vector pointers */
6072                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
6073                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6074                 if (!vsi->q_vectors) {
6075                         ret = -ENOMEM;
6076                         goto err_vectors;
6077                 }
6078         }
6079         return ret;
6080
6081 err_vectors:
6082         kfree(vsi->tx_rings);
6083         return ret;
6084 }
6085
6086 /**
6087  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6088  * @pf: board private structure
6089  * @type: type of VSI
6090  *
6091  * On error: returns error code (negative)
6092  * On success: returns vsi index in PF (positive)
6093  **/
6094 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6095 {
6096         int ret = -ENODEV;
6097         struct i40e_vsi *vsi;
6098         int vsi_idx;
6099         int i;
6100
6101         /* Need to protect the allocation of the VSIs at the PF level */
6102         mutex_lock(&pf->switch_mutex);
6103
6104         /* VSI list may be fragmented if VSI creation/destruction has
6105          * been happening.  We can afford to do a quick scan to look
6106          * for any free VSIs in the list.
6107          *
6108          * find next empty vsi slot, looping back around if necessary
6109          */
6110         i = pf->next_vsi;
6111         while (i < pf->num_alloc_vsi && pf->vsi[i])
6112                 i++;
6113         if (i >= pf->num_alloc_vsi) {
6114                 i = 0;
6115                 while (i < pf->next_vsi && pf->vsi[i])
6116                         i++;
6117         }
6118
6119         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6120                 vsi_idx = i;             /* Found one! */
6121         } else {
6122                 ret = -ENODEV;
6123                 goto unlock_pf;  /* out of VSI slots! */
6124         }
6125         pf->next_vsi = ++i;
6126
6127         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6128         if (!vsi) {
6129                 ret = -ENOMEM;
6130                 goto unlock_pf;
6131         }
6132         vsi->type = type;
6133         vsi->back = pf;
6134         set_bit(__I40E_DOWN, &vsi->state);
6135         vsi->flags = 0;
6136         vsi->idx = vsi_idx;
6137         vsi->rx_itr_setting = pf->rx_itr_default;
6138         vsi->tx_itr_setting = pf->tx_itr_default;
6139         vsi->netdev_registered = false;
6140         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6141         INIT_LIST_HEAD(&vsi->mac_filter_list);
6142         vsi->irqs_ready = false;
6143
6144         ret = i40e_set_num_rings_in_vsi(vsi);
6145         if (ret)
6146                 goto err_rings;
6147
6148         ret = i40e_vsi_alloc_arrays(vsi, true);
6149         if (ret)
6150                 goto err_rings;
6151
6152         /* Setup default MSIX irq handler for VSI */
6153         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6154
6155         pf->vsi[vsi_idx] = vsi;
6156         ret = vsi_idx;
6157         goto unlock_pf;
6158
6159 err_rings:
6160         pf->next_vsi = i - 1;
6161         kfree(vsi);
6162 unlock_pf:
6163         mutex_unlock(&pf->switch_mutex);
6164         return ret;
6165 }
6166
6167 /**
6168  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6169  * @type: VSI pointer
6170  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6171  *
6172  * On error: returns error code (negative)
6173  * On success: returns 0
6174  **/
6175 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6176 {
6177         /* free the ring and vector containers */
6178         if (free_qvectors) {
6179                 kfree(vsi->q_vectors);
6180                 vsi->q_vectors = NULL;
6181         }
6182         kfree(vsi->tx_rings);
6183         vsi->tx_rings = NULL;
6184         vsi->rx_rings = NULL;
6185 }
6186
6187 /**
6188  * i40e_vsi_clear - Deallocate the VSI provided
6189  * @vsi: the VSI being un-configured
6190  **/
6191 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6192 {
6193         struct i40e_pf *pf;
6194
6195         if (!vsi)
6196                 return 0;
6197
6198         if (!vsi->back)
6199                 goto free_vsi;
6200         pf = vsi->back;
6201
6202         mutex_lock(&pf->switch_mutex);
6203         if (!pf->vsi[vsi->idx]) {
6204                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6205                         vsi->idx, vsi->idx, vsi, vsi->type);
6206                 goto unlock_vsi;
6207         }
6208
6209         if (pf->vsi[vsi->idx] != vsi) {
6210                 dev_err(&pf->pdev->dev,
6211                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6212                         pf->vsi[vsi->idx]->idx,
6213                         pf->vsi[vsi->idx],
6214                         pf->vsi[vsi->idx]->type,
6215                         vsi->idx, vsi, vsi->type);
6216                 goto unlock_vsi;
6217         }
6218
6219         /* updates the pf for this cleared vsi */
6220         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6221         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6222
6223         i40e_vsi_free_arrays(vsi, true);
6224
6225         pf->vsi[vsi->idx] = NULL;
6226         if (vsi->idx < pf->next_vsi)
6227                 pf->next_vsi = vsi->idx;
6228
6229 unlock_vsi:
6230         mutex_unlock(&pf->switch_mutex);
6231 free_vsi:
6232         kfree(vsi);
6233
6234         return 0;
6235 }
6236
6237 /**
6238  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6239  * @vsi: the VSI being cleaned
6240  **/
6241 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6242 {
6243         int i;
6244
6245         if (vsi->tx_rings && vsi->tx_rings[0]) {
6246                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6247                         kfree_rcu(vsi->tx_rings[i], rcu);
6248                         vsi->tx_rings[i] = NULL;
6249                         vsi->rx_rings[i] = NULL;
6250                 }
6251         }
6252 }
6253
6254 /**
6255  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6256  * @vsi: the VSI being configured
6257  **/
6258 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6259 {
6260         struct i40e_ring *tx_ring, *rx_ring;
6261         struct i40e_pf *pf = vsi->back;
6262         int i;
6263
6264         /* Set basic values in the rings to be used later during open() */
6265         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6266                 /* allocate space for both Tx and Rx in one shot */
6267                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6268                 if (!tx_ring)
6269                         goto err_out;
6270
6271                 tx_ring->queue_index = i;
6272                 tx_ring->reg_idx = vsi->base_queue + i;
6273                 tx_ring->ring_active = false;
6274                 tx_ring->vsi = vsi;
6275                 tx_ring->netdev = vsi->netdev;
6276                 tx_ring->dev = &pf->pdev->dev;
6277                 tx_ring->count = vsi->num_desc;
6278                 tx_ring->size = 0;
6279                 tx_ring->dcb_tc = 0;
6280                 vsi->tx_rings[i] = tx_ring;
6281
6282                 rx_ring = &tx_ring[1];
6283                 rx_ring->queue_index = i;
6284                 rx_ring->reg_idx = vsi->base_queue + i;
6285                 rx_ring->ring_active = false;
6286                 rx_ring->vsi = vsi;
6287                 rx_ring->netdev = vsi->netdev;
6288                 rx_ring->dev = &pf->pdev->dev;
6289                 rx_ring->count = vsi->num_desc;
6290                 rx_ring->size = 0;
6291                 rx_ring->dcb_tc = 0;
6292                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6293                         set_ring_16byte_desc_enabled(rx_ring);
6294                 else
6295                         clear_ring_16byte_desc_enabled(rx_ring);
6296                 vsi->rx_rings[i] = rx_ring;
6297         }
6298
6299         return 0;
6300
6301 err_out:
6302         i40e_vsi_clear_rings(vsi);
6303         return -ENOMEM;
6304 }
6305
6306 /**
6307  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6308  * @pf: board private structure
6309  * @vectors: the number of MSI-X vectors to request
6310  *
6311  * Returns the number of vectors reserved, or error
6312  **/
6313 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6314 {
6315         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6316                                         I40E_MIN_MSIX, vectors);
6317         if (vectors < 0) {
6318                 dev_info(&pf->pdev->dev,
6319                          "MSI-X vector reservation failed: %d\n", vectors);
6320                 vectors = 0;
6321         }
6322
6323         return vectors;
6324 }
6325
6326 /**
6327  * i40e_init_msix - Setup the MSIX capability
6328  * @pf: board private structure
6329  *
6330  * Work with the OS to set up the MSIX vectors needed.
6331  *
6332  * Returns 0 on success, negative on failure
6333  **/
6334 static int i40e_init_msix(struct i40e_pf *pf)
6335 {
6336         i40e_status err = 0;
6337         struct i40e_hw *hw = &pf->hw;
6338         int v_budget, i;
6339         int vec;
6340
6341         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6342                 return -ENODEV;
6343
6344         /* The number of vectors we'll request will be comprised of:
6345          *   - Add 1 for "other" cause for Admin Queue events, etc.
6346          *   - The number of LAN queue pairs
6347          *      - Queues being used for RSS.
6348          *              We don't need as many as max_rss_size vectors.
6349          *              use rss_size instead in the calculation since that
6350          *              is governed by number of cpus in the system.
6351          *      - assumes symmetric Tx/Rx pairing
6352          *   - The number of VMDq pairs
6353          * Once we count this up, try the request.
6354          *
6355          * If we can't get what we want, we'll simplify to nearly nothing
6356          * and try again.  If that still fails, we punt.
6357          */
6358         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6359         pf->num_vmdq_msix = pf->num_vmdq_qps;
6360         v_budget = 1 + pf->num_lan_msix;
6361         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6362         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6363                 v_budget++;
6364
6365         /* Scale down if necessary, and the rings will share vectors */
6366         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6367
6368         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6369                                    GFP_KERNEL);
6370         if (!pf->msix_entries)
6371                 return -ENOMEM;
6372
6373         for (i = 0; i < v_budget; i++)
6374                 pf->msix_entries[i].entry = i;
6375         vec = i40e_reserve_msix_vectors(pf, v_budget);
6376
6377         if (vec != v_budget) {
6378                 /* If we have limited resources, we will start with no vectors
6379                  * for the special features and then allocate vectors to some
6380                  * of these features based on the policy and at the end disable
6381                  * the features that did not get any vectors.
6382                  */
6383                 pf->num_vmdq_msix = 0;
6384         }
6385
6386         if (vec < I40E_MIN_MSIX) {
6387                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6388                 kfree(pf->msix_entries);
6389                 pf->msix_entries = NULL;
6390                 return -ENODEV;
6391
6392         } else if (vec == I40E_MIN_MSIX) {
6393                 /* Adjust for minimal MSIX use */
6394                 pf->num_vmdq_vsis = 0;
6395                 pf->num_vmdq_qps = 0;
6396                 pf->num_lan_qps = 1;
6397                 pf->num_lan_msix = 1;
6398
6399         } else if (vec != v_budget) {
6400                 /* reserve the misc vector */
6401                 vec--;
6402
6403                 /* Scale vector usage down */
6404                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6405                 pf->num_vmdq_vsis = 1;
6406
6407                 /* partition out the remaining vectors */
6408                 switch (vec) {
6409                 case 2:
6410                         pf->num_lan_msix = 1;
6411                         break;
6412                 case 3:
6413                         pf->num_lan_msix = 2;
6414                         break;
6415                 default:
6416                         pf->num_lan_msix = min_t(int, (vec / 2),
6417                                                  pf->num_lan_qps);
6418                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6419                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6420                         break;
6421                 }
6422         }
6423
6424         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6425             (pf->num_vmdq_msix == 0)) {
6426                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6427                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6428         }
6429         return err;
6430 }
6431
6432 /**
6433  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6434  * @vsi: the VSI being configured
6435  * @v_idx: index of the vector in the vsi struct
6436  *
6437  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6438  **/
6439 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6440 {
6441         struct i40e_q_vector *q_vector;
6442
6443         /* allocate q_vector */
6444         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6445         if (!q_vector)
6446                 return -ENOMEM;
6447
6448         q_vector->vsi = vsi;
6449         q_vector->v_idx = v_idx;
6450         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6451         if (vsi->netdev)
6452                 netif_napi_add(vsi->netdev, &q_vector->napi,
6453                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6454
6455         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6456         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6457
6458         /* tie q_vector and vsi together */
6459         vsi->q_vectors[v_idx] = q_vector;
6460
6461         return 0;
6462 }
6463
6464 /**
6465  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6466  * @vsi: the VSI being configured
6467  *
6468  * We allocate one q_vector per queue interrupt.  If allocation fails we
6469  * return -ENOMEM.
6470  **/
6471 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6472 {
6473         struct i40e_pf *pf = vsi->back;
6474         int v_idx, num_q_vectors;
6475         int err;
6476
6477         /* if not MSIX, give the one vector only to the LAN VSI */
6478         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6479                 num_q_vectors = vsi->num_q_vectors;
6480         else if (vsi == pf->vsi[pf->lan_vsi])
6481                 num_q_vectors = 1;
6482         else
6483                 return -EINVAL;
6484
6485         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6486                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6487                 if (err)
6488                         goto err_out;
6489         }
6490
6491         return 0;
6492
6493 err_out:
6494         while (v_idx--)
6495                 i40e_free_q_vector(vsi, v_idx);
6496
6497         return err;
6498 }
6499
6500 /**
6501  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6502  * @pf: board private structure to initialize
6503  **/
6504 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6505 {
6506         int err = 0;
6507
6508         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6509                 err = i40e_init_msix(pf);
6510                 if (err) {
6511                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6512                                        I40E_FLAG_RSS_ENABLED    |
6513                                        I40E_FLAG_DCB_CAPABLE    |
6514                                        I40E_FLAG_SRIOV_ENABLED  |
6515                                        I40E_FLAG_FD_SB_ENABLED  |
6516                                        I40E_FLAG_FD_ATR_ENABLED |
6517                                        I40E_FLAG_VMDQ_ENABLED);
6518
6519                         /* rework the queue expectations without MSIX */
6520                         i40e_determine_queue_usage(pf);
6521                 }
6522         }
6523
6524         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6525             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6526                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6527                 err = pci_enable_msi(pf->pdev);
6528                 if (err) {
6529                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6530                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6531                 }
6532         }
6533
6534         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6535                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6536
6537         /* track first vector for misc interrupts */
6538         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6539 }
6540
6541 /**
6542  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6543  * @pf: board private structure
6544  *
6545  * This sets up the handler for MSIX 0, which is used to manage the
6546  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6547  * when in MSI or Legacy interrupt mode.
6548  **/
6549 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6550 {
6551         struct i40e_hw *hw = &pf->hw;
6552         int err = 0;
6553
6554         /* Only request the irq if this is the first time through, and
6555          * not when we're rebuilding after a Reset
6556          */
6557         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6558                 err = request_irq(pf->msix_entries[0].vector,
6559                                   i40e_intr, 0, pf->misc_int_name, pf);
6560                 if (err) {
6561                         dev_info(&pf->pdev->dev,
6562                                  "request_irq for %s failed: %d\n",
6563                                  pf->misc_int_name, err);
6564                         return -EFAULT;
6565                 }
6566         }
6567
6568         i40e_enable_misc_int_causes(hw);
6569
6570         /* associate no queues to the misc vector */
6571         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6572         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6573
6574         i40e_flush(hw);
6575
6576         i40e_irq_dynamic_enable_icr0(pf);
6577
6578         return err;
6579 }
6580
6581 /**
6582  * i40e_config_rss - Prepare for RSS if used
6583  * @pf: board private structure
6584  **/
6585 static int i40e_config_rss(struct i40e_pf *pf)
6586 {
6587         /* Set of random keys generated using kernel random number generator */
6588         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6589                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6590                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6591                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6592         struct i40e_hw *hw = &pf->hw;
6593         u32 lut = 0;
6594         int i, j;
6595         u64 hena;
6596         u32 reg_val;
6597
6598         /* Fill out hash function seed */
6599         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6600                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6601
6602         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6603         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6604                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6605         hena |= I40E_DEFAULT_RSS_HENA;
6606         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6607         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6608
6609         /* Check capability and Set table size and register per hw expectation*/
6610         reg_val = rd32(hw, I40E_PFQF_CTL_0);
6611         if (hw->func_caps.rss_table_size == 512) {
6612                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6613                 pf->rss_table_size = 512;
6614         } else {
6615                 pf->rss_table_size = 128;
6616                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6617         }
6618         wr32(hw, I40E_PFQF_CTL_0, reg_val);
6619
6620         /* Populate the LUT with max no. of queues in round robin fashion */
6621         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
6622
6623                 /* The assumption is that lan qp count will be the highest
6624                  * qp count for any PF VSI that needs RSS.
6625                  * If multiple VSIs need RSS support, all the qp counts
6626                  * for those VSIs should be a power of 2 for RSS to work.
6627                  * If LAN VSI is the only consumer for RSS then this requirement
6628                  * is not necessary.
6629                  */
6630                 if (j == pf->rss_size)
6631                         j = 0;
6632                 /* lut = 4-byte sliding window of 4 lut entries */
6633                 lut = (lut << 8) | (j &
6634                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6635                 /* On i = 3, we have 4 entries in lut; write to the register */
6636                 if ((i & 3) == 3)
6637                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6638         }
6639         i40e_flush(hw);
6640
6641         return 0;
6642 }
6643
6644 /**
6645  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6646  * @pf: board private structure
6647  * @queue_count: the requested queue count for rss.
6648  *
6649  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6650  * count which may be different from the requested queue count.
6651  **/
6652 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6653 {
6654         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6655                 return 0;
6656
6657         queue_count = min_t(int, queue_count, pf->rss_size_max);
6658
6659         if (queue_count != pf->rss_size) {
6660                 i40e_prep_for_reset(pf);
6661
6662                 pf->rss_size = queue_count;
6663
6664                 i40e_reset_and_rebuild(pf, true);
6665                 i40e_config_rss(pf);
6666         }
6667         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6668         return pf->rss_size;
6669 }
6670
6671 /**
6672  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6673  * @pf: board private structure to initialize
6674  *
6675  * i40e_sw_init initializes the Adapter private data structure.
6676  * Fields are initialized based on PCI device information and
6677  * OS network device settings (MTU size).
6678  **/
6679 static int i40e_sw_init(struct i40e_pf *pf)
6680 {
6681         int err = 0;
6682         int size;
6683
6684         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6685                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6686         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6687         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6688                 if (I40E_DEBUG_USER & debug)
6689                         pf->hw.debug_mask = debug;
6690                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6691                                                 I40E_DEFAULT_MSG_ENABLE);
6692         }
6693
6694         /* Set default capability flags */
6695         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6696                     I40E_FLAG_MSI_ENABLED     |
6697                     I40E_FLAG_MSIX_ENABLED    |
6698                     I40E_FLAG_RX_1BUF_ENABLED;
6699
6700         /* Set default ITR */
6701         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
6702         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
6703
6704         /* Depending on PF configurations, it is possible that the RSS
6705          * maximum might end up larger than the available queues
6706          */
6707         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6708         pf->rss_size_max = min_t(int, pf->rss_size_max,
6709                                  pf->hw.func_caps.num_tx_qp);
6710         if (pf->hw.func_caps.rss) {
6711                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6712                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6713         } else {
6714                 pf->rss_size = 1;
6715         }
6716
6717         /* MFP mode enabled */
6718         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6719                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6720                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6721         }
6722
6723         /* FW/NVM is not yet fixed in this regard */
6724         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6725             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6726                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6727                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6728                 /* Setup a counter for fd_atr per pf */
6729                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
6730                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6731                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6732                         /* Setup a counter for fd_sb per pf */
6733                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
6734                 } else {
6735                         dev_info(&pf->pdev->dev,
6736                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6737                 }
6738                 pf->fdir_pf_filter_count =
6739                                  pf->hw.func_caps.fd_filters_guaranteed;
6740                 pf->hw.fdir_shared_filter_count =
6741                                  pf->hw.func_caps.fd_filters_best_effort;
6742         }
6743
6744         if (pf->hw.func_caps.vmdq) {
6745                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6746                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6747                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6748         }
6749
6750 #ifdef CONFIG_PCI_IOV
6751         if (pf->hw.func_caps.num_vfs) {
6752                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6753                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6754                 pf->num_req_vfs = min_t(int,
6755                                         pf->hw.func_caps.num_vfs,
6756                                         I40E_MAX_VF_COUNT);
6757         }
6758 #endif /* CONFIG_PCI_IOV */
6759         pf->eeprom_version = 0xDEAD;
6760         pf->lan_veb = I40E_NO_VEB;
6761         pf->lan_vsi = I40E_NO_VSI;
6762
6763         /* set up queue assignment tracking */
6764         size = sizeof(struct i40e_lump_tracking)
6765                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6766         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6767         if (!pf->qp_pile) {
6768                 err = -ENOMEM;
6769                 goto sw_init_done;
6770         }
6771         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6772         pf->qp_pile->search_hint = 0;
6773
6774         /* set up vector assignment tracking */
6775         size = sizeof(struct i40e_lump_tracking)
6776                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6777         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6778         if (!pf->irq_pile) {
6779                 kfree(pf->qp_pile);
6780                 err = -ENOMEM;
6781                 goto sw_init_done;
6782         }
6783         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6784         pf->irq_pile->search_hint = 0;
6785
6786         mutex_init(&pf->switch_mutex);
6787
6788 sw_init_done:
6789         return err;
6790 }
6791
6792 /**
6793  * i40e_set_ntuple - set the ntuple feature flag and take action
6794  * @pf: board private structure to initialize
6795  * @features: the feature set that the stack is suggesting
6796  *
6797  * returns a bool to indicate if reset needs to happen
6798  **/
6799 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6800 {
6801         bool need_reset = false;
6802
6803         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6804          * the state changed, we need to reset.
6805          */
6806         if (features & NETIF_F_NTUPLE) {
6807                 /* Enable filters and mark for reset */
6808                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6809                         need_reset = true;
6810                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6811         } else {
6812                 /* turn off filters, mark for reset and clear SW filter list */
6813                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6814                         need_reset = true;
6815                         i40e_fdir_filter_exit(pf);
6816                 }
6817                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6818                 /* if ATR was disabled it can be re-enabled. */
6819                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6820                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6821         }
6822         return need_reset;
6823 }
6824
6825 /**
6826  * i40e_set_features - set the netdev feature flags
6827  * @netdev: ptr to the netdev being adjusted
6828  * @features: the feature set that the stack is suggesting
6829  **/
6830 static int i40e_set_features(struct net_device *netdev,
6831                              netdev_features_t features)
6832 {
6833         struct i40e_netdev_priv *np = netdev_priv(netdev);
6834         struct i40e_vsi *vsi = np->vsi;
6835         struct i40e_pf *pf = vsi->back;
6836         bool need_reset;
6837
6838         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6839                 i40e_vlan_stripping_enable(vsi);
6840         else
6841                 i40e_vlan_stripping_disable(vsi);
6842
6843         need_reset = i40e_set_ntuple(pf, features);
6844
6845         if (need_reset)
6846                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6847
6848         return 0;
6849 }
6850
6851 #ifdef CONFIG_I40E_VXLAN
6852 /**
6853  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6854  * @pf: board private structure
6855  * @port: The UDP port to look up
6856  *
6857  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6858  **/
6859 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6860 {
6861         u8 i;
6862
6863         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6864                 if (pf->vxlan_ports[i] == port)
6865                         return i;
6866         }
6867
6868         return i;
6869 }
6870
6871 /**
6872  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6873  * @netdev: This physical port's netdev
6874  * @sa_family: Socket Family that VXLAN is notifying us about
6875  * @port: New UDP port number that VXLAN started listening to
6876  **/
6877 static void i40e_add_vxlan_port(struct net_device *netdev,
6878                                 sa_family_t sa_family, __be16 port)
6879 {
6880         struct i40e_netdev_priv *np = netdev_priv(netdev);
6881         struct i40e_vsi *vsi = np->vsi;
6882         struct i40e_pf *pf = vsi->back;
6883         u8 next_idx;
6884         u8 idx;
6885
6886         if (sa_family == AF_INET6)
6887                 return;
6888
6889         idx = i40e_get_vxlan_port_idx(pf, port);
6890
6891         /* Check if port already exists */
6892         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6893                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6894                 return;
6895         }
6896
6897         /* Now check if there is space to add the new port */
6898         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6899
6900         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6901                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6902                             ntohs(port));
6903                 return;
6904         }
6905
6906         /* New port: add it and mark its index in the bitmap */
6907         pf->vxlan_ports[next_idx] = port;
6908         pf->pending_vxlan_bitmap |= (1 << next_idx);
6909
6910         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6911 }
6912
6913 /**
6914  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6915  * @netdev: This physical port's netdev
6916  * @sa_family: Socket Family that VXLAN is notifying us about
6917  * @port: UDP port number that VXLAN stopped listening to
6918  **/
6919 static void i40e_del_vxlan_port(struct net_device *netdev,
6920                                 sa_family_t sa_family, __be16 port)
6921 {
6922         struct i40e_netdev_priv *np = netdev_priv(netdev);
6923         struct i40e_vsi *vsi = np->vsi;
6924         struct i40e_pf *pf = vsi->back;
6925         u8 idx;
6926
6927         if (sa_family == AF_INET6)
6928                 return;
6929
6930         idx = i40e_get_vxlan_port_idx(pf, port);
6931
6932         /* Check if port already exists */
6933         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6934                 /* if port exists, set it to 0 (mark for deletion)
6935                  * and make it pending
6936                  */
6937                 pf->vxlan_ports[idx] = 0;
6938
6939                 pf->pending_vxlan_bitmap |= (1 << idx);
6940
6941                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6942         } else {
6943                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6944                             ntohs(port));
6945         }
6946 }
6947
6948 #endif
6949 #ifdef HAVE_FDB_OPS
6950 #ifdef USE_CONST_DEV_UC_CHAR
6951 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
6952                             struct net_device *dev,
6953                             const unsigned char *addr,
6954                             u16 flags)
6955 #else
6956 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
6957                             struct net_device *dev,
6958                             unsigned char *addr,
6959                             u16 flags)
6960 #endif
6961 {
6962         struct i40e_netdev_priv *np = netdev_priv(dev);
6963         struct i40e_pf *pf = np->vsi->back;
6964         int err = 0;
6965
6966         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
6967                 return -EOPNOTSUPP;
6968
6969         /* Hardware does not support aging addresses so if a
6970          * ndm_state is given only allow permanent addresses
6971          */
6972         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
6973                 netdev_info(dev, "FDB only supports static addresses\n");
6974                 return -EINVAL;
6975         }
6976
6977         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
6978                 err = dev_uc_add_excl(dev, addr);
6979         else if (is_multicast_ether_addr(addr))
6980                 err = dev_mc_add_excl(dev, addr);
6981         else
6982                 err = -EINVAL;
6983
6984         /* Only return duplicate errors if NLM_F_EXCL is set */
6985         if (err == -EEXIST && !(flags & NLM_F_EXCL))
6986                 err = 0;
6987
6988         return err;
6989 }
6990
6991 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6992 #ifdef USE_CONST_DEV_UC_CHAR
6993 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6994                             struct net_device *dev,
6995                             const unsigned char *addr)
6996 #else
6997 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6998                             struct net_device *dev,
6999                             unsigned char *addr)
7000 #endif
7001 {
7002         struct i40e_netdev_priv *np = netdev_priv(dev);
7003         struct i40e_pf *pf = np->vsi->back;
7004         int err = -EOPNOTSUPP;
7005
7006         if (ndm->ndm_state & NUD_PERMANENT) {
7007                 netdev_info(dev, "FDB only supports static addresses\n");
7008                 return -EINVAL;
7009         }
7010
7011         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7012                 if (is_unicast_ether_addr(addr))
7013                         err = dev_uc_del(dev, addr);
7014                 else if (is_multicast_ether_addr(addr))
7015                         err = dev_mc_del(dev, addr);
7016                 else
7017                         err = -EINVAL;
7018         }
7019
7020         return err;
7021 }
7022
7023 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7024                              struct netlink_callback *cb,
7025                              struct net_device *dev,
7026                              int idx)
7027 {
7028         struct i40e_netdev_priv *np = netdev_priv(dev);
7029         struct i40e_pf *pf = np->vsi->back;
7030
7031         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7032                 idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
7033
7034         return idx;
7035 }
7036
7037 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7038 #endif /* HAVE_FDB_OPS */
7039 static const struct net_device_ops i40e_netdev_ops = {
7040         .ndo_open               = i40e_open,
7041         .ndo_stop               = i40e_close,
7042         .ndo_start_xmit         = i40e_lan_xmit_frame,
7043         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7044         .ndo_set_rx_mode        = i40e_set_rx_mode,
7045         .ndo_validate_addr      = eth_validate_addr,
7046         .ndo_set_mac_address    = i40e_set_mac,
7047         .ndo_change_mtu         = i40e_change_mtu,
7048         .ndo_do_ioctl           = i40e_ioctl,
7049         .ndo_tx_timeout         = i40e_tx_timeout,
7050         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7051         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7052 #ifdef CONFIG_NET_POLL_CONTROLLER
7053         .ndo_poll_controller    = i40e_netpoll,
7054 #endif
7055         .ndo_setup_tc           = i40e_setup_tc,
7056         .ndo_set_features       = i40e_set_features,
7057         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7058         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7059         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7060         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7061         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7062         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofck,
7063 #ifdef CONFIG_I40E_VXLAN
7064         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7065         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7066 #endif
7067 #ifdef HAVE_FDB_OPS
7068         .ndo_fdb_add            = i40e_ndo_fdb_add,
7069 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7070         .ndo_fdb_del            = i40e_ndo_fdb_del,
7071         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7072 #endif
7073 #endif
7074 };
7075
7076 /**
7077  * i40e_config_netdev - Setup the netdev flags
7078  * @vsi: the VSI being configured
7079  *
7080  * Returns 0 on success, negative value on failure
7081  **/
7082 static int i40e_config_netdev(struct i40e_vsi *vsi)
7083 {
7084         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7085         struct i40e_pf *pf = vsi->back;
7086         struct i40e_hw *hw = &pf->hw;
7087         struct i40e_netdev_priv *np;
7088         struct net_device *netdev;
7089         u8 mac_addr[ETH_ALEN];
7090         int etherdev_size;
7091
7092         etherdev_size = sizeof(struct i40e_netdev_priv);
7093         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7094         if (!netdev)
7095                 return -ENOMEM;
7096
7097         vsi->netdev = netdev;
7098         np = netdev_priv(netdev);
7099         np->vsi = vsi;
7100
7101         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7102                                   NETIF_F_GSO_UDP_TUNNEL |
7103                                   NETIF_F_TSO;
7104
7105         netdev->features = NETIF_F_SG                  |
7106                            NETIF_F_IP_CSUM             |
7107                            NETIF_F_SCTP_CSUM           |
7108                            NETIF_F_HIGHDMA             |
7109                            NETIF_F_GSO_UDP_TUNNEL      |
7110                            NETIF_F_HW_VLAN_CTAG_TX     |
7111                            NETIF_F_HW_VLAN_CTAG_RX     |
7112                            NETIF_F_HW_VLAN_CTAG_FILTER |
7113                            NETIF_F_IPV6_CSUM           |
7114                            NETIF_F_TSO                 |
7115                            NETIF_F_TSO_ECN             |
7116                            NETIF_F_TSO6                |
7117                            NETIF_F_RXCSUM              |
7118                            NETIF_F_RXHASH              |
7119                            0;
7120
7121         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7122                 netdev->features |= NETIF_F_NTUPLE;
7123
7124         /* copy netdev features into list of user selectable features */
7125         netdev->hw_features |= netdev->features;
7126
7127         if (vsi->type == I40E_VSI_MAIN) {
7128                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7129                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7130                 /* The following two steps are necessary to prevent reception
7131                  * of tagged packets - by default the NVM loads a MAC-VLAN
7132                  * filter that will accept any tagged packet.  This is to
7133                  * prevent that during normal operations until a specific
7134                  * VLAN tag filter has been set.
7135                  */
7136                 i40e_rm_default_mac_filter(vsi, mac_addr);
7137                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
7138         } else {
7139                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7140                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7141                          pf->vsi[pf->lan_vsi]->netdev->name);
7142                 random_ether_addr(mac_addr);
7143                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7144         }
7145         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7146
7147         ether_addr_copy(netdev->dev_addr, mac_addr);
7148         ether_addr_copy(netdev->perm_addr, mac_addr);
7149         /* vlan gets same features (except vlan offload)
7150          * after any tweaks for specific VSI types
7151          */
7152         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7153                                                      NETIF_F_HW_VLAN_CTAG_RX |
7154                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7155         netdev->priv_flags |= IFF_UNICAST_FLT;
7156         netdev->priv_flags |= IFF_SUPP_NOFCS;
7157         /* Setup netdev TC information */
7158         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7159
7160         netdev->netdev_ops = &i40e_netdev_ops;
7161         netdev->watchdog_timeo = 5 * HZ;
7162         i40e_set_ethtool_ops(netdev);
7163
7164         return 0;
7165 }
7166
7167 /**
7168  * i40e_vsi_delete - Delete a VSI from the switch
7169  * @vsi: the VSI being removed
7170  *
7171  * Returns 0 on success, negative value on failure
7172  **/
7173 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7174 {
7175         /* remove default VSI is not allowed */
7176         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7177                 return;
7178
7179         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7180 }
7181
7182 /**
7183  * i40e_add_vsi - Add a VSI to the switch
7184  * @vsi: the VSI being configured
7185  *
7186  * This initializes a VSI context depending on the VSI type to be added and
7187  * passes it down to the add_vsi aq command.
7188  **/
7189 static int i40e_add_vsi(struct i40e_vsi *vsi)
7190 {
7191         int ret = -ENODEV;
7192         struct i40e_mac_filter *f, *ftmp;
7193         struct i40e_pf *pf = vsi->back;
7194         struct i40e_hw *hw = &pf->hw;
7195         struct i40e_vsi_context ctxt;
7196         u8 enabled_tc = 0x1; /* TC0 enabled */
7197         int f_count = 0;
7198
7199         memset(&ctxt, 0, sizeof(ctxt));
7200         switch (vsi->type) {
7201         case I40E_VSI_MAIN:
7202                 /* The PF's main VSI is already setup as part of the
7203                  * device initialization, so we'll not bother with
7204                  * the add_vsi call, but we will retrieve the current
7205                  * VSI context.
7206                  */
7207                 ctxt.seid = pf->main_vsi_seid;
7208                 ctxt.pf_num = pf->hw.pf_id;
7209                 ctxt.vf_num = 0;
7210                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7211                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7212                 if (ret) {
7213                         dev_info(&pf->pdev->dev,
7214                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7215                                  ret, pf->hw.aq.asq_last_status);
7216                         return -ENOENT;
7217                 }
7218                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7219                 vsi->info.valid_sections = 0;
7220
7221                 vsi->seid = ctxt.seid;
7222                 vsi->id = ctxt.vsi_number;
7223
7224                 enabled_tc = i40e_pf_get_tc_map(pf);
7225
7226                 /* MFP mode setup queue map and update VSI */
7227                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7228                         memset(&ctxt, 0, sizeof(ctxt));
7229                         ctxt.seid = pf->main_vsi_seid;
7230                         ctxt.pf_num = pf->hw.pf_id;
7231                         ctxt.vf_num = 0;
7232                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7233                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7234                         if (ret) {
7235                                 dev_info(&pf->pdev->dev,
7236                                          "update vsi failed, aq_err=%d\n",
7237                                          pf->hw.aq.asq_last_status);
7238                                 ret = -ENOENT;
7239                                 goto err;
7240                         }
7241                         /* update the local VSI info queue map */
7242                         i40e_vsi_update_queue_map(vsi, &ctxt);
7243                         vsi->info.valid_sections = 0;
7244                 } else {
7245                         /* Default/Main VSI is only enabled for TC0
7246                          * reconfigure it to enable all TCs that are
7247                          * available on the port in SFP mode.
7248                          */
7249                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7250                         if (ret) {
7251                                 dev_info(&pf->pdev->dev,
7252                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7253                                          enabled_tc, ret,
7254                                          pf->hw.aq.asq_last_status);
7255                                 ret = -ENOENT;
7256                         }
7257                 }
7258                 break;
7259
7260         case I40E_VSI_FDIR:
7261                 ctxt.pf_num = hw->pf_id;
7262                 ctxt.vf_num = 0;
7263                 ctxt.uplink_seid = vsi->uplink_seid;
7264                 ctxt.connection_type = 0x1;     /* regular data port */
7265                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7266                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7267                 break;
7268
7269         case I40E_VSI_VMDQ2:
7270                 ctxt.pf_num = hw->pf_id;
7271                 ctxt.vf_num = 0;
7272                 ctxt.uplink_seid = vsi->uplink_seid;
7273                 ctxt.connection_type = 0x1;     /* regular data port */
7274                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7275
7276                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7277
7278                 /* This VSI is connected to VEB so the switch_id
7279                  * should be set to zero by default.
7280                  */
7281                 ctxt.info.switch_id = 0;
7282                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
7283                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7284
7285                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7286                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7287                 break;
7288
7289         case I40E_VSI_SRIOV:
7290                 ctxt.pf_num = hw->pf_id;
7291                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7292                 ctxt.uplink_seid = vsi->uplink_seid;
7293                 ctxt.connection_type = 0x1;     /* regular data port */
7294                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7295
7296                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7297
7298                 /* This VSI is connected to VEB so the switch_id
7299                  * should be set to zero by default.
7300                  */
7301                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7302
7303                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7304                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7305                 if (pf->vf[vsi->vf_id].spoofchk) {
7306                         ctxt.info.valid_sections |=
7307                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7308                         ctxt.info.sec_flags |=
7309                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7310                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7311                 }
7312                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7313                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7314                 break;
7315
7316         default:
7317                 return -ENODEV;
7318         }
7319
7320         if (vsi->type != I40E_VSI_MAIN) {
7321                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7322                 if (ret) {
7323                         dev_info(&vsi->back->pdev->dev,
7324                                  "add vsi failed, aq_err=%d\n",
7325                                  vsi->back->hw.aq.asq_last_status);
7326                         ret = -ENOENT;
7327                         goto err;
7328                 }
7329                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7330                 vsi->info.valid_sections = 0;
7331                 vsi->seid = ctxt.seid;
7332                 vsi->id = ctxt.vsi_number;
7333         }
7334
7335         /* If macvlan filters already exist, force them to get loaded */
7336         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7337                 f->changed = true;
7338                 f_count++;
7339         }
7340         if (f_count) {
7341                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7342                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7343         }
7344
7345         /* Update VSI BW information */
7346         ret = i40e_vsi_get_bw_info(vsi);
7347         if (ret) {
7348                 dev_info(&pf->pdev->dev,
7349                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7350                          ret, pf->hw.aq.asq_last_status);
7351                 /* VSI is already added so not tearing that up */
7352                 ret = 0;
7353         }
7354
7355 err:
7356         return ret;
7357 }
7358
7359 /**
7360  * i40e_vsi_release - Delete a VSI and free its resources
7361  * @vsi: the VSI being removed
7362  *
7363  * Returns 0 on success or < 0 on error
7364  **/
7365 int i40e_vsi_release(struct i40e_vsi *vsi)
7366 {
7367         struct i40e_mac_filter *f, *ftmp;
7368         struct i40e_veb *veb = NULL;
7369         struct i40e_pf *pf;
7370         u16 uplink_seid;
7371         int i, n;
7372
7373         pf = vsi->back;
7374
7375         /* release of a VEB-owner or last VSI is not allowed */
7376         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7377                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7378                          vsi->seid, vsi->uplink_seid);
7379                 return -ENODEV;
7380         }
7381         if (vsi == pf->vsi[pf->lan_vsi] &&
7382             !test_bit(__I40E_DOWN, &pf->state)) {
7383                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7384                 return -ENODEV;
7385         }
7386
7387         uplink_seid = vsi->uplink_seid;
7388         if (vsi->type != I40E_VSI_SRIOV) {
7389                 if (vsi->netdev_registered) {
7390                         vsi->netdev_registered = false;
7391                         if (vsi->netdev) {
7392                                 /* results in a call to i40e_close() */
7393                                 unregister_netdev(vsi->netdev);
7394                         }
7395                 } else {
7396                         i40e_vsi_close(vsi);
7397                 }
7398                 i40e_vsi_disable_irq(vsi);
7399         }
7400
7401         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7402                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7403                                 f->is_vf, f->is_netdev);
7404         i40e_sync_vsi_filters(vsi);
7405
7406         i40e_vsi_delete(vsi);
7407         i40e_vsi_free_q_vectors(vsi);
7408         if (vsi->netdev) {
7409                 free_netdev(vsi->netdev);
7410                 vsi->netdev = NULL;
7411         }
7412         i40e_vsi_clear_rings(vsi);
7413         i40e_vsi_clear(vsi);
7414
7415         /* If this was the last thing on the VEB, except for the
7416          * controlling VSI, remove the VEB, which puts the controlling
7417          * VSI onto the next level down in the switch.
7418          *
7419          * Well, okay, there's one more exception here: don't remove
7420          * the orphan VEBs yet.  We'll wait for an explicit remove request
7421          * from up the network stack.
7422          */
7423         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7424                 if (pf->vsi[i] &&
7425                     pf->vsi[i]->uplink_seid == uplink_seid &&
7426                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7427                         n++;      /* count the VSIs */
7428                 }
7429         }
7430         for (i = 0; i < I40E_MAX_VEB; i++) {
7431                 if (!pf->veb[i])
7432                         continue;
7433                 if (pf->veb[i]->uplink_seid == uplink_seid)
7434                         n++;     /* count the VEBs */
7435                 if (pf->veb[i]->seid == uplink_seid)
7436                         veb = pf->veb[i];
7437         }
7438         if (n == 0 && veb && veb->uplink_seid != 0)
7439                 i40e_veb_release(veb);
7440
7441         return 0;
7442 }
7443
7444 /**
7445  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7446  * @vsi: ptr to the VSI
7447  *
7448  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7449  * corresponding SW VSI structure and initializes num_queue_pairs for the
7450  * newly allocated VSI.
7451  *
7452  * Returns 0 on success or negative on failure
7453  **/
7454 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7455 {
7456         int ret = -ENOENT;
7457         struct i40e_pf *pf = vsi->back;
7458
7459         if (vsi->q_vectors[0]) {
7460                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7461                          vsi->seid);
7462                 return -EEXIST;
7463         }
7464
7465         if (vsi->base_vector) {
7466                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7467                          vsi->seid, vsi->base_vector);
7468                 return -EEXIST;
7469         }
7470
7471         ret = i40e_vsi_alloc_q_vectors(vsi);
7472         if (ret) {
7473                 dev_info(&pf->pdev->dev,
7474                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7475                          vsi->num_q_vectors, vsi->seid, ret);
7476                 vsi->num_q_vectors = 0;
7477                 goto vector_setup_out;
7478         }
7479
7480         if (vsi->num_q_vectors)
7481                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7482                                                  vsi->num_q_vectors, vsi->idx);
7483         if (vsi->base_vector < 0) {
7484                 dev_info(&pf->pdev->dev,
7485                          "failed to get queue tracking for VSI %d, err=%d\n",
7486                          vsi->seid, vsi->base_vector);
7487                 i40e_vsi_free_q_vectors(vsi);
7488                 ret = -ENOENT;
7489                 goto vector_setup_out;
7490         }
7491
7492 vector_setup_out:
7493         return ret;
7494 }
7495
7496 /**
7497  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7498  * @vsi: pointer to the vsi.
7499  *
7500  * This re-allocates a vsi's queue resources.
7501  *
7502  * Returns pointer to the successfully allocated and configured VSI sw struct
7503  * on success, otherwise returns NULL on failure.
7504  **/
7505 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7506 {
7507         struct i40e_pf *pf = vsi->back;
7508         u8 enabled_tc;
7509         int ret;
7510
7511         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7512         i40e_vsi_clear_rings(vsi);
7513
7514         i40e_vsi_free_arrays(vsi, false);
7515         i40e_set_num_rings_in_vsi(vsi);
7516         ret = i40e_vsi_alloc_arrays(vsi, false);
7517         if (ret)
7518                 goto err_vsi;
7519
7520         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7521         if (ret < 0) {
7522                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7523                          vsi->seid, ret);
7524                 goto err_vsi;
7525         }
7526         vsi->base_queue = ret;
7527
7528         /* Update the FW view of the VSI. Force a reset of TC and queue
7529          * layout configurations.
7530          */
7531         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7532         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7533         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7534         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7535
7536         /* assign it some queues */
7537         ret = i40e_alloc_rings(vsi);
7538         if (ret)
7539                 goto err_rings;
7540
7541         /* map all of the rings to the q_vectors */
7542         i40e_vsi_map_rings_to_vectors(vsi);
7543         return vsi;
7544
7545 err_rings:
7546         i40e_vsi_free_q_vectors(vsi);
7547         if (vsi->netdev_registered) {
7548                 vsi->netdev_registered = false;
7549                 unregister_netdev(vsi->netdev);
7550                 free_netdev(vsi->netdev);
7551                 vsi->netdev = NULL;
7552         }
7553         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7554 err_vsi:
7555         i40e_vsi_clear(vsi);
7556         return NULL;
7557 }
7558
7559 /**
7560  * i40e_vsi_setup - Set up a VSI by a given type
7561  * @pf: board private structure
7562  * @type: VSI type
7563  * @uplink_seid: the switch element to link to
7564  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7565  *
7566  * This allocates the sw VSI structure and its queue resources, then add a VSI
7567  * to the identified VEB.
7568  *
7569  * Returns pointer to the successfully allocated and configure VSI sw struct on
7570  * success, otherwise returns NULL on failure.
7571  **/
7572 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7573                                 u16 uplink_seid, u32 param1)
7574 {
7575         struct i40e_vsi *vsi = NULL;
7576         struct i40e_veb *veb = NULL;
7577         int ret, i;
7578         int v_idx;
7579
7580         /* The requested uplink_seid must be either
7581          *     - the PF's port seid
7582          *              no VEB is needed because this is the PF
7583          *              or this is a Flow Director special case VSI
7584          *     - seid of an existing VEB
7585          *     - seid of a VSI that owns an existing VEB
7586          *     - seid of a VSI that doesn't own a VEB
7587          *              a new VEB is created and the VSI becomes the owner
7588          *     - seid of the PF VSI, which is what creates the first VEB
7589          *              this is a special case of the previous
7590          *
7591          * Find which uplink_seid we were given and create a new VEB if needed
7592          */
7593         for (i = 0; i < I40E_MAX_VEB; i++) {
7594                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7595                         veb = pf->veb[i];
7596                         break;
7597                 }
7598         }
7599
7600         if (!veb && uplink_seid != pf->mac_seid) {
7601
7602                 for (i = 0; i < pf->num_alloc_vsi; i++) {
7603                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7604                                 vsi = pf->vsi[i];
7605                                 break;
7606                         }
7607                 }
7608                 if (!vsi) {
7609                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7610                                  uplink_seid);
7611                         return NULL;
7612                 }
7613
7614                 if (vsi->uplink_seid == pf->mac_seid)
7615                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7616                                              vsi->tc_config.enabled_tc);
7617                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7618                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7619                                              vsi->tc_config.enabled_tc);
7620
7621                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7622                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7623                                 veb = pf->veb[i];
7624                 }
7625                 if (!veb) {
7626                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7627                         return NULL;
7628                 }
7629
7630                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7631                 uplink_seid = veb->seid;
7632         }
7633
7634         /* get vsi sw struct */
7635         v_idx = i40e_vsi_mem_alloc(pf, type);
7636         if (v_idx < 0)
7637                 goto err_alloc;
7638         vsi = pf->vsi[v_idx];
7639         if (!vsi)
7640                 goto err_alloc;
7641         vsi->type = type;
7642         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7643
7644         if (type == I40E_VSI_MAIN)
7645                 pf->lan_vsi = v_idx;
7646         else if (type == I40E_VSI_SRIOV)
7647                 vsi->vf_id = param1;
7648         /* assign it some queues */
7649         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7650                                 vsi->idx);
7651         if (ret < 0) {
7652                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7653                          vsi->seid, ret);
7654                 goto err_vsi;
7655         }
7656         vsi->base_queue = ret;
7657
7658         /* get a VSI from the hardware */
7659         vsi->uplink_seid = uplink_seid;
7660         ret = i40e_add_vsi(vsi);
7661         if (ret)
7662                 goto err_vsi;
7663
7664         switch (vsi->type) {
7665         /* setup the netdev if needed */
7666         case I40E_VSI_MAIN:
7667         case I40E_VSI_VMDQ2:
7668                 ret = i40e_config_netdev(vsi);
7669                 if (ret)
7670                         goto err_netdev;
7671                 ret = register_netdev(vsi->netdev);
7672                 if (ret)
7673                         goto err_netdev;
7674                 vsi->netdev_registered = true;
7675                 netif_carrier_off(vsi->netdev);
7676 #ifdef CONFIG_I40E_DCB
7677                 /* Setup DCB netlink interface */
7678                 i40e_dcbnl_setup(vsi);
7679 #endif /* CONFIG_I40E_DCB */
7680                 /* fall through */
7681
7682         case I40E_VSI_FDIR:
7683                 /* set up vectors and rings if needed */
7684                 ret = i40e_vsi_setup_vectors(vsi);
7685                 if (ret)
7686                         goto err_msix;
7687
7688                 ret = i40e_alloc_rings(vsi);
7689                 if (ret)
7690                         goto err_rings;
7691
7692                 /* map all of the rings to the q_vectors */
7693                 i40e_vsi_map_rings_to_vectors(vsi);
7694
7695                 i40e_vsi_reset_stats(vsi);
7696                 break;
7697
7698         default:
7699                 /* no netdev or rings for the other VSI types */
7700                 break;
7701         }
7702
7703         return vsi;
7704
7705 err_rings:
7706         i40e_vsi_free_q_vectors(vsi);
7707 err_msix:
7708         if (vsi->netdev_registered) {
7709                 vsi->netdev_registered = false;
7710                 unregister_netdev(vsi->netdev);
7711                 free_netdev(vsi->netdev);
7712                 vsi->netdev = NULL;
7713         }
7714 err_netdev:
7715         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7716 err_vsi:
7717         i40e_vsi_clear(vsi);
7718 err_alloc:
7719         return NULL;
7720 }
7721
7722 /**
7723  * i40e_veb_get_bw_info - Query VEB BW information
7724  * @veb: the veb to query
7725  *
7726  * Query the Tx scheduler BW configuration data for given VEB
7727  **/
7728 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7729 {
7730         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7731         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7732         struct i40e_pf *pf = veb->pf;
7733         struct i40e_hw *hw = &pf->hw;
7734         u32 tc_bw_max;
7735         int ret = 0;
7736         int i;
7737
7738         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7739                                                   &bw_data, NULL);
7740         if (ret) {
7741                 dev_info(&pf->pdev->dev,
7742                          "query veb bw config failed, aq_err=%d\n",
7743                          hw->aq.asq_last_status);
7744                 goto out;
7745         }
7746
7747         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7748                                                    &ets_data, NULL);
7749         if (ret) {
7750                 dev_info(&pf->pdev->dev,
7751                          "query veb bw ets config failed, aq_err=%d\n",
7752                          hw->aq.asq_last_status);
7753                 goto out;
7754         }
7755
7756         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7757         veb->bw_max_quanta = ets_data.tc_bw_max;
7758         veb->is_abs_credits = bw_data.absolute_credits_enable;
7759         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7760                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7761         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7762                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7763                 veb->bw_tc_limit_credits[i] =
7764                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7765                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7766         }
7767
7768 out:
7769         return ret;
7770 }
7771
7772 /**
7773  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7774  * @pf: board private structure
7775  *
7776  * On error: returns error code (negative)
7777  * On success: returns vsi index in PF (positive)
7778  **/
7779 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7780 {
7781         int ret = -ENOENT;
7782         struct i40e_veb *veb;
7783         int i;
7784
7785         /* Need to protect the allocation of switch elements at the PF level */
7786         mutex_lock(&pf->switch_mutex);
7787
7788         /* VEB list may be fragmented if VEB creation/destruction has
7789          * been happening.  We can afford to do a quick scan to look
7790          * for any free slots in the list.
7791          *
7792          * find next empty veb slot, looping back around if necessary
7793          */
7794         i = 0;
7795         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7796                 i++;
7797         if (i >= I40E_MAX_VEB) {
7798                 ret = -ENOMEM;
7799                 goto err_alloc_veb;  /* out of VEB slots! */
7800         }
7801
7802         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7803         if (!veb) {
7804                 ret = -ENOMEM;
7805                 goto err_alloc_veb;
7806         }
7807         veb->pf = pf;
7808         veb->idx = i;
7809         veb->enabled_tc = 1;
7810
7811         pf->veb[i] = veb;
7812         ret = i;
7813 err_alloc_veb:
7814         mutex_unlock(&pf->switch_mutex);
7815         return ret;
7816 }
7817
7818 /**
7819  * i40e_switch_branch_release - Delete a branch of the switch tree
7820  * @branch: where to start deleting
7821  *
7822  * This uses recursion to find the tips of the branch to be
7823  * removed, deleting until we get back to and can delete this VEB.
7824  **/
7825 static void i40e_switch_branch_release(struct i40e_veb *branch)
7826 {
7827         struct i40e_pf *pf = branch->pf;
7828         u16 branch_seid = branch->seid;
7829         u16 veb_idx = branch->idx;
7830         int i;
7831
7832         /* release any VEBs on this VEB - RECURSION */
7833         for (i = 0; i < I40E_MAX_VEB; i++) {
7834                 if (!pf->veb[i])
7835                         continue;
7836                 if (pf->veb[i]->uplink_seid == branch->seid)
7837                         i40e_switch_branch_release(pf->veb[i]);
7838         }
7839
7840         /* Release the VSIs on this VEB, but not the owner VSI.
7841          *
7842          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7843          *       the VEB itself, so don't use (*branch) after this loop.
7844          */
7845         for (i = 0; i < pf->num_alloc_vsi; i++) {
7846                 if (!pf->vsi[i])
7847                         continue;
7848                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7849                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7850                         i40e_vsi_release(pf->vsi[i]);
7851                 }
7852         }
7853
7854         /* There's one corner case where the VEB might not have been
7855          * removed, so double check it here and remove it if needed.
7856          * This case happens if the veb was created from the debugfs
7857          * commands and no VSIs were added to it.
7858          */
7859         if (pf->veb[veb_idx])
7860                 i40e_veb_release(pf->veb[veb_idx]);
7861 }
7862
7863 /**
7864  * i40e_veb_clear - remove veb struct
7865  * @veb: the veb to remove
7866  **/
7867 static void i40e_veb_clear(struct i40e_veb *veb)
7868 {
7869         if (!veb)
7870                 return;
7871
7872         if (veb->pf) {
7873                 struct i40e_pf *pf = veb->pf;
7874
7875                 mutex_lock(&pf->switch_mutex);
7876                 if (pf->veb[veb->idx] == veb)
7877                         pf->veb[veb->idx] = NULL;
7878                 mutex_unlock(&pf->switch_mutex);
7879         }
7880
7881         kfree(veb);
7882 }
7883
7884 /**
7885  * i40e_veb_release - Delete a VEB and free its resources
7886  * @veb: the VEB being removed
7887  **/
7888 void i40e_veb_release(struct i40e_veb *veb)
7889 {
7890         struct i40e_vsi *vsi = NULL;
7891         struct i40e_pf *pf;
7892         int i, n = 0;
7893
7894         pf = veb->pf;
7895
7896         /* find the remaining VSI and check for extras */
7897         for (i = 0; i < pf->num_alloc_vsi; i++) {
7898                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7899                         n++;
7900                         vsi = pf->vsi[i];
7901                 }
7902         }
7903         if (n != 1) {
7904                 dev_info(&pf->pdev->dev,
7905                          "can't remove VEB %d with %d VSIs left\n",
7906                          veb->seid, n);
7907                 return;
7908         }
7909
7910         /* move the remaining VSI to uplink veb */
7911         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7912         if (veb->uplink_seid) {
7913                 vsi->uplink_seid = veb->uplink_seid;
7914                 if (veb->uplink_seid == pf->mac_seid)
7915                         vsi->veb_idx = I40E_NO_VEB;
7916                 else
7917                         vsi->veb_idx = veb->veb_idx;
7918         } else {
7919                 /* floating VEB */
7920                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7921                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7922         }
7923
7924         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7925         i40e_veb_clear(veb);
7926 }
7927
7928 /**
7929  * i40e_add_veb - create the VEB in the switch
7930  * @veb: the VEB to be instantiated
7931  * @vsi: the controlling VSI
7932  **/
7933 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7934 {
7935         bool is_default = false;
7936         bool is_cloud = false;
7937         int ret;
7938
7939         /* get a VEB from the hardware */
7940         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7941                               veb->enabled_tc, is_default,
7942                               is_cloud, &veb->seid, NULL);
7943         if (ret) {
7944                 dev_info(&veb->pf->pdev->dev,
7945                          "couldn't add VEB, err %d, aq_err %d\n",
7946                          ret, veb->pf->hw.aq.asq_last_status);
7947                 return -EPERM;
7948         }
7949
7950         /* get statistics counter */
7951         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7952                                          &veb->stats_idx, NULL, NULL, NULL);
7953         if (ret) {
7954                 dev_info(&veb->pf->pdev->dev,
7955                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7956                          ret, veb->pf->hw.aq.asq_last_status);
7957                 return -EPERM;
7958         }
7959         ret = i40e_veb_get_bw_info(veb);
7960         if (ret) {
7961                 dev_info(&veb->pf->pdev->dev,
7962                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7963                          ret, veb->pf->hw.aq.asq_last_status);
7964                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7965                 return -ENOENT;
7966         }
7967
7968         vsi->uplink_seid = veb->seid;
7969         vsi->veb_idx = veb->idx;
7970         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7971
7972         return 0;
7973 }
7974
7975 /**
7976  * i40e_veb_setup - Set up a VEB
7977  * @pf: board private structure
7978  * @flags: VEB setup flags
7979  * @uplink_seid: the switch element to link to
7980  * @vsi_seid: the initial VSI seid
7981  * @enabled_tc: Enabled TC bit-map
7982  *
7983  * This allocates the sw VEB structure and links it into the switch
7984  * It is possible and legal for this to be a duplicate of an already
7985  * existing VEB.  It is also possible for both uplink and vsi seids
7986  * to be zero, in order to create a floating VEB.
7987  *
7988  * Returns pointer to the successfully allocated VEB sw struct on
7989  * success, otherwise returns NULL on failure.
7990  **/
7991 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7992                                 u16 uplink_seid, u16 vsi_seid,
7993                                 u8 enabled_tc)
7994 {
7995         struct i40e_veb *veb, *uplink_veb = NULL;
7996         int vsi_idx, veb_idx;
7997         int ret;
7998
7999         /* if one seid is 0, the other must be 0 to create a floating relay */
8000         if ((uplink_seid == 0 || vsi_seid == 0) &&
8001             (uplink_seid + vsi_seid != 0)) {
8002                 dev_info(&pf->pdev->dev,
8003                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8004                          uplink_seid, vsi_seid);
8005                 return NULL;
8006         }
8007
8008         /* make sure there is such a vsi and uplink */
8009         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8010                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8011                         break;
8012         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8013                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8014                          vsi_seid);
8015                 return NULL;
8016         }
8017
8018         if (uplink_seid && uplink_seid != pf->mac_seid) {
8019                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8020                         if (pf->veb[veb_idx] &&
8021                             pf->veb[veb_idx]->seid == uplink_seid) {
8022                                 uplink_veb = pf->veb[veb_idx];
8023                                 break;
8024                         }
8025                 }
8026                 if (!uplink_veb) {
8027                         dev_info(&pf->pdev->dev,
8028                                  "uplink seid %d not found\n", uplink_seid);
8029                         return NULL;
8030                 }
8031         }
8032
8033         /* get veb sw struct */
8034         veb_idx = i40e_veb_mem_alloc(pf);
8035         if (veb_idx < 0)
8036                 goto err_alloc;
8037         veb = pf->veb[veb_idx];
8038         veb->flags = flags;
8039         veb->uplink_seid = uplink_seid;
8040         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8041         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8042
8043         /* create the VEB in the switch */
8044         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8045         if (ret)
8046                 goto err_veb;
8047         if (vsi_idx == pf->lan_vsi)
8048                 pf->lan_veb = veb->idx;
8049
8050         return veb;
8051
8052 err_veb:
8053         i40e_veb_clear(veb);
8054 err_alloc:
8055         return NULL;
8056 }
8057
8058 /**
8059  * i40e_setup_pf_switch_element - set pf vars based on switch type
8060  * @pf: board private structure
8061  * @ele: element we are building info from
8062  * @num_reported: total number of elements
8063  * @printconfig: should we print the contents
8064  *
8065  * helper function to assist in extracting a few useful SEID values.
8066  **/
8067 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8068                                 struct i40e_aqc_switch_config_element_resp *ele,
8069                                 u16 num_reported, bool printconfig)
8070 {
8071         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8072         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8073         u8 element_type = ele->element_type;
8074         u16 seid = le16_to_cpu(ele->seid);
8075
8076         if (printconfig)
8077                 dev_info(&pf->pdev->dev,
8078                          "type=%d seid=%d uplink=%d downlink=%d\n",
8079                          element_type, seid, uplink_seid, downlink_seid);
8080
8081         switch (element_type) {
8082         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8083                 pf->mac_seid = seid;
8084                 break;
8085         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8086                 /* Main VEB? */
8087                 if (uplink_seid != pf->mac_seid)
8088                         break;
8089                 if (pf->lan_veb == I40E_NO_VEB) {
8090                         int v;
8091
8092                         /* find existing or else empty VEB */
8093                         for (v = 0; v < I40E_MAX_VEB; v++) {
8094                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8095                                         pf->lan_veb = v;
8096                                         break;
8097                                 }
8098                         }
8099                         if (pf->lan_veb == I40E_NO_VEB) {
8100                                 v = i40e_veb_mem_alloc(pf);
8101                                 if (v < 0)
8102                                         break;
8103                                 pf->lan_veb = v;
8104                         }
8105                 }
8106
8107                 pf->veb[pf->lan_veb]->seid = seid;
8108                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8109                 pf->veb[pf->lan_veb]->pf = pf;
8110                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8111                 break;
8112         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8113                 if (num_reported != 1)
8114                         break;
8115                 /* This is immediately after a reset so we can assume this is
8116                  * the PF's VSI
8117                  */
8118                 pf->mac_seid = uplink_seid;
8119                 pf->pf_seid = downlink_seid;
8120                 pf->main_vsi_seid = seid;
8121                 if (printconfig)
8122                         dev_info(&pf->pdev->dev,
8123                                  "pf_seid=%d main_vsi_seid=%d\n",
8124                                  pf->pf_seid, pf->main_vsi_seid);
8125                 break;
8126         case I40E_SWITCH_ELEMENT_TYPE_PF:
8127         case I40E_SWITCH_ELEMENT_TYPE_VF:
8128         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8129         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8130         case I40E_SWITCH_ELEMENT_TYPE_PE:
8131         case I40E_SWITCH_ELEMENT_TYPE_PA:
8132                 /* ignore these for now */
8133                 break;
8134         default:
8135                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8136                          element_type, seid);
8137                 break;
8138         }
8139 }
8140
8141 /**
8142  * i40e_fetch_switch_configuration - Get switch config from firmware
8143  * @pf: board private structure
8144  * @printconfig: should we print the contents
8145  *
8146  * Get the current switch configuration from the device and
8147  * extract a few useful SEID values.
8148  **/
8149 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8150 {
8151         struct i40e_aqc_get_switch_config_resp *sw_config;
8152         u16 next_seid = 0;
8153         int ret = 0;
8154         u8 *aq_buf;
8155         int i;
8156
8157         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8158         if (!aq_buf)
8159                 return -ENOMEM;
8160
8161         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8162         do {
8163                 u16 num_reported, num_total;
8164
8165                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8166                                                 I40E_AQ_LARGE_BUF,
8167                                                 &next_seid, NULL);
8168                 if (ret) {
8169                         dev_info(&pf->pdev->dev,
8170                                  "get switch config failed %d aq_err=%x\n",
8171                                  ret, pf->hw.aq.asq_last_status);
8172                         kfree(aq_buf);
8173                         return -ENOENT;
8174                 }
8175
8176                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8177                 num_total = le16_to_cpu(sw_config->header.num_total);
8178
8179                 if (printconfig)
8180                         dev_info(&pf->pdev->dev,
8181                                  "header: %d reported %d total\n",
8182                                  num_reported, num_total);
8183
8184                 for (i = 0; i < num_reported; i++) {
8185                         struct i40e_aqc_switch_config_element_resp *ele =
8186                                 &sw_config->element[i];
8187
8188                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8189                                                      printconfig);
8190                 }
8191         } while (next_seid != 0);
8192
8193         kfree(aq_buf);
8194         return ret;
8195 }
8196
8197 /**
8198  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8199  * @pf: board private structure
8200  * @reinit: if the Main VSI needs to re-initialized.
8201  *
8202  * Returns 0 on success, negative value on failure
8203  **/
8204 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8205 {
8206         u32 rxfc = 0, txfc = 0, rxfc_reg;
8207         int ret;
8208
8209         /* find out what's out there already */
8210         ret = i40e_fetch_switch_configuration(pf, false);
8211         if (ret) {
8212                 dev_info(&pf->pdev->dev,
8213                          "couldn't fetch switch config, err %d, aq_err %d\n",
8214                          ret, pf->hw.aq.asq_last_status);
8215                 return ret;
8216         }
8217         i40e_pf_reset_stats(pf);
8218
8219         /* first time setup */
8220         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8221                 struct i40e_vsi *vsi = NULL;
8222                 u16 uplink_seid;
8223
8224                 /* Set up the PF VSI associated with the PF's main VSI
8225                  * that is already in the HW switch
8226                  */
8227                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8228                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8229                 else
8230                         uplink_seid = pf->mac_seid;
8231                 if (pf->lan_vsi == I40E_NO_VSI)
8232                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8233                 else if (reinit)
8234                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8235                 if (!vsi) {
8236                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8237                         i40e_fdir_teardown(pf);
8238                         return -EAGAIN;
8239                 }
8240         } else {
8241                 /* force a reset of TC and queue layout configurations */
8242                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8243                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8244                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8245                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8246         }
8247         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8248
8249         i40e_fdir_sb_setup(pf);
8250
8251         /* Setup static PF queue filter control settings */
8252         ret = i40e_setup_pf_filter_control(pf);
8253         if (ret) {
8254                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8255                          ret);
8256                 /* Failure here should not stop continuing other steps */
8257         }
8258
8259         /* enable RSS in the HW, even for only one queue, as the stack can use
8260          * the hash
8261          */
8262         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8263                 i40e_config_rss(pf);
8264
8265         /* fill in link information and enable LSE reporting */
8266         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
8267         i40e_link_event(pf);
8268
8269         /* Initialize user-specific link properties */
8270         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8271                                   I40E_AQ_AN_COMPLETED) ? true : false);
8272         /* requested_mode is set in probe or by ethtool */
8273         if (!pf->fc_autoneg_status)
8274                 goto no_autoneg;
8275
8276         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
8277             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
8278                 pf->hw.fc.current_mode = I40E_FC_FULL;
8279         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
8280                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
8281         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
8282                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
8283         else
8284                 pf->hw.fc.current_mode = I40E_FC_NONE;
8285
8286         /* sync the flow control settings with the auto-neg values */
8287         switch (pf->hw.fc.current_mode) {
8288         case I40E_FC_FULL:
8289                 txfc = 1;
8290                 rxfc = 1;
8291                 break;
8292         case I40E_FC_TX_PAUSE:
8293                 txfc = 1;
8294                 rxfc = 0;
8295                 break;
8296         case I40E_FC_RX_PAUSE:
8297                 txfc = 0;
8298                 rxfc = 1;
8299                 break;
8300         case I40E_FC_NONE:
8301         case I40E_FC_DEFAULT:
8302                 txfc = 0;
8303                 rxfc = 0;
8304                 break;
8305         case I40E_FC_PFC:
8306                 /* TBD */
8307                 break;
8308         /* no default case, we have to handle all possibilities here */
8309         }
8310
8311         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
8312
8313         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8314                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
8315         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
8316
8317         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
8318
8319         goto fc_complete;
8320
8321 no_autoneg:
8322         /* disable L2 flow control, user can turn it on if they wish */
8323         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
8324         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8325                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
8326
8327 fc_complete:
8328         i40e_ptp_init(pf);
8329
8330         return ret;
8331 }
8332
8333 /**
8334  * i40e_determine_queue_usage - Work out queue distribution
8335  * @pf: board private structure
8336  **/
8337 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8338 {
8339         int queues_left;
8340
8341         pf->num_lan_qps = 0;
8342
8343         /* Find the max queues to be put into basic use.  We'll always be
8344          * using TC0, whether or not DCB is running, and TC0 will get the
8345          * big RSS set.
8346          */
8347         queues_left = pf->hw.func_caps.num_tx_qp;
8348
8349         if ((queues_left == 1) ||
8350             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8351                 /* one qp for PF, no queues for anything else */
8352                 queues_left = 0;
8353                 pf->rss_size = pf->num_lan_qps = 1;
8354
8355                 /* make sure all the fancies are disabled */
8356                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8357                                I40E_FLAG_FD_SB_ENABLED  |
8358                                I40E_FLAG_FD_ATR_ENABLED |
8359                                I40E_FLAG_DCB_CAPABLE    |
8360                                I40E_FLAG_SRIOV_ENABLED  |
8361                                I40E_FLAG_VMDQ_ENABLED);
8362         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8363                                   I40E_FLAG_FD_SB_ENABLED |
8364                                   I40E_FLAG_FD_ATR_ENABLED |
8365                                   I40E_FLAG_DCB_CAPABLE))) {
8366                 /* one qp for PF */
8367                 pf->rss_size = pf->num_lan_qps = 1;
8368                 queues_left -= pf->num_lan_qps;
8369
8370                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8371                                I40E_FLAG_FD_SB_ENABLED  |
8372                                I40E_FLAG_FD_ATR_ENABLED |
8373                                I40E_FLAG_DCB_ENABLED    |
8374                                I40E_FLAG_VMDQ_ENABLED);
8375         } else {
8376                 /* Not enough queues for all TCs */
8377                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8378                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8379                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8380                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8381                 }
8382                 pf->num_lan_qps = pf->rss_size_max;
8383                 queues_left -= pf->num_lan_qps;
8384         }
8385
8386         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8387                 if (queues_left > 1) {
8388                         queues_left -= 1; /* save 1 queue for FD */
8389                 } else {
8390                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8391                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8392                 }
8393         }
8394
8395         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8396             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8397                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8398                                         (queues_left / pf->num_vf_qps));
8399                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8400         }
8401
8402         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8403             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8404                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8405                                           (queues_left / pf->num_vmdq_qps));
8406                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8407         }
8408
8409         pf->queues_left = queues_left;
8410 }
8411
8412 /**
8413  * i40e_setup_pf_filter_control - Setup PF static filter control
8414  * @pf: PF to be setup
8415  *
8416  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8417  * settings. If PE/FCoE are enabled then it will also set the per PF
8418  * based filter sizes required for them. It also enables Flow director,
8419  * ethertype and macvlan type filter settings for the pf.
8420  *
8421  * Returns 0 on success, negative on failure
8422  **/
8423 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8424 {
8425         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8426
8427         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8428
8429         /* Flow Director is enabled */
8430         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8431                 settings->enable_fdir = true;
8432
8433         /* Ethtype and MACVLAN filters enabled for PF */
8434         settings->enable_ethtype = true;
8435         settings->enable_macvlan = true;
8436
8437         if (i40e_set_filter_control(&pf->hw, settings))
8438                 return -ENOENT;
8439
8440         return 0;
8441 }
8442
8443 #define INFO_STRING_LEN 255
8444 static void i40e_print_features(struct i40e_pf *pf)
8445 {
8446         struct i40e_hw *hw = &pf->hw;
8447         char *buf, *string;
8448
8449         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8450         if (!string) {
8451                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8452                 return;
8453         }
8454
8455         buf = string;
8456
8457         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8458 #ifdef CONFIG_PCI_IOV
8459         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8460 #endif
8461         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8462                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8463
8464         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8465                 buf += sprintf(buf, "RSS ");
8466         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8467                 buf += sprintf(buf, "FD_ATR ");
8468         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8469                 buf += sprintf(buf, "FD_SB ");
8470                 buf += sprintf(buf, "NTUPLE ");
8471         }
8472         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8473                 buf += sprintf(buf, "DCB ");
8474         if (pf->flags & I40E_FLAG_PTP)
8475                 buf += sprintf(buf, "PTP ");
8476
8477         BUG_ON(buf > (string + INFO_STRING_LEN));
8478         dev_info(&pf->pdev->dev, "%s\n", string);
8479         kfree(string);
8480 }
8481
8482 /**
8483  * i40e_probe - Device initialization routine
8484  * @pdev: PCI device information struct
8485  * @ent: entry in i40e_pci_tbl
8486  *
8487  * i40e_probe initializes a pf identified by a pci_dev structure.
8488  * The OS initialization, configuring of the pf private structure,
8489  * and a hardware reset occur.
8490  *
8491  * Returns 0 on success, negative on failure
8492  **/
8493 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8494 {
8495         struct i40e_pf *pf;
8496         struct i40e_hw *hw;
8497         static u16 pfs_found;
8498         u16 link_status;
8499         int err = 0;
8500         u32 len;
8501         u32 i;
8502
8503         err = pci_enable_device_mem(pdev);
8504         if (err)
8505                 return err;
8506
8507         /* set up for high or low dma */
8508         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8509         if (err) {
8510                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8511                 if (err) {
8512                         dev_err(&pdev->dev,
8513                                 "DMA configuration failed: 0x%x\n", err);
8514                         goto err_dma;
8515                 }
8516         }
8517
8518         /* set up pci connections */
8519         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8520                                            IORESOURCE_MEM), i40e_driver_name);
8521         if (err) {
8522                 dev_info(&pdev->dev,
8523                          "pci_request_selected_regions failed %d\n", err);
8524                 goto err_pci_reg;
8525         }
8526
8527         pci_enable_pcie_error_reporting(pdev);
8528         pci_set_master(pdev);
8529
8530         /* Now that we have a PCI connection, we need to do the
8531          * low level device setup.  This is primarily setting up
8532          * the Admin Queue structures and then querying for the
8533          * device's current profile information.
8534          */
8535         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8536         if (!pf) {
8537                 err = -ENOMEM;
8538                 goto err_pf_alloc;
8539         }
8540         pf->next_vsi = 0;
8541         pf->pdev = pdev;
8542         set_bit(__I40E_DOWN, &pf->state);
8543
8544         hw = &pf->hw;
8545         hw->back = pf;
8546         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8547                               pci_resource_len(pdev, 0));
8548         if (!hw->hw_addr) {
8549                 err = -EIO;
8550                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8551                          (unsigned int)pci_resource_start(pdev, 0),
8552                          (unsigned int)pci_resource_len(pdev, 0), err);
8553                 goto err_ioremap;
8554         }
8555         hw->vendor_id = pdev->vendor;
8556         hw->device_id = pdev->device;
8557         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8558         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8559         hw->subsystem_device_id = pdev->subsystem_device;
8560         hw->bus.device = PCI_SLOT(pdev->devfn);
8561         hw->bus.func = PCI_FUNC(pdev->devfn);
8562         pf->instance = pfs_found;
8563
8564         /* do a special CORER for clearing PXE mode once at init */
8565         if (hw->revision_id == 0 &&
8566             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8567                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8568                 i40e_flush(hw);
8569                 msleep(200);
8570                 pf->corer_count++;
8571
8572                 i40e_clear_pxe_mode(hw);
8573         }
8574
8575         /* Reset here to make sure all is clean and to define PF 'n' */
8576         err = i40e_pf_reset(hw);
8577         if (err) {
8578                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8579                 goto err_pf_reset;
8580         }
8581         pf->pfr_count++;
8582
8583         hw->aq.num_arq_entries = I40E_AQ_LEN;
8584         hw->aq.num_asq_entries = I40E_AQ_LEN;
8585         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8586         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8587         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8588         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8589                  "%s-pf%d:misc",
8590                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8591
8592         err = i40e_init_shared_code(hw);
8593         if (err) {
8594                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8595                 goto err_pf_reset;
8596         }
8597
8598         /* set up a default setting for link flow control */
8599         pf->hw.fc.requested_mode = I40E_FC_NONE;
8600
8601         err = i40e_init_adminq(hw);
8602         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8603         if (err) {
8604                 dev_info(&pdev->dev,
8605                          "init_adminq failed: %d expecting API %02x.%02x\n",
8606                          err,
8607                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8608                 goto err_pf_reset;
8609         }
8610
8611         i40e_verify_eeprom(pf);
8612
8613         /* Rev 0 hardware was never productized */
8614         if (hw->revision_id < 1)
8615                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
8616
8617         i40e_clear_pxe_mode(hw);
8618         err = i40e_get_capabilities(pf);
8619         if (err)
8620                 goto err_adminq_setup;
8621
8622         err = i40e_sw_init(pf);
8623         if (err) {
8624                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8625                 goto err_sw_init;
8626         }
8627
8628         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8629                                 hw->func_caps.num_rx_qp,
8630                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8631         if (err) {
8632                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8633                 goto err_init_lan_hmc;
8634         }
8635
8636         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8637         if (err) {
8638                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8639                 err = -ENOENT;
8640                 goto err_configure_lan_hmc;
8641         }
8642
8643         i40e_get_mac_addr(hw, hw->mac.addr);
8644         if (!is_valid_ether_addr(hw->mac.addr)) {
8645                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8646                 err = -EIO;
8647                 goto err_mac_addr;
8648         }
8649         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8650         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
8651
8652         pci_set_drvdata(pdev, pf);
8653         pci_save_state(pdev);
8654 #ifdef CONFIG_I40E_DCB
8655         err = i40e_init_pf_dcb(pf);
8656         if (err) {
8657                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8658                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8659                 /* Continue without DCB enabled */
8660         }
8661 #endif /* CONFIG_I40E_DCB */
8662
8663         /* set up periodic task facility */
8664         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8665         pf->service_timer_period = HZ;
8666
8667         INIT_WORK(&pf->service_task, i40e_service_task);
8668         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8669         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8670         pf->link_check_timeout = jiffies;
8671
8672         /* WoL defaults to disabled */
8673         pf->wol_en = false;
8674         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8675
8676         /* set up the main switch operations */
8677         i40e_determine_queue_usage(pf);
8678         i40e_init_interrupt_scheme(pf);
8679
8680         /* The number of VSIs reported by the FW is the minimum guaranteed
8681          * to us; HW supports far more and we share the remaining pool with
8682          * the other PFs. We allocate space for more than the guarantee with
8683          * the understanding that we might not get them all later.
8684          */
8685         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
8686                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
8687         else
8688                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
8689
8690         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
8691         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
8692         pf->vsi = kzalloc(len, GFP_KERNEL);
8693         if (!pf->vsi) {
8694                 err = -ENOMEM;
8695                 goto err_switch_setup;
8696         }
8697
8698         err = i40e_setup_pf_switch(pf, false);
8699         if (err) {
8700                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8701                 goto err_vsis;
8702         }
8703         /* if FDIR VSI was set up, start it now */
8704         for (i = 0; i < pf->num_alloc_vsi; i++) {
8705                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
8706                         i40e_vsi_open(pf->vsi[i]);
8707                         break;
8708                 }
8709         }
8710
8711         /* The main driver is (mostly) up and happy. We need to set this state
8712          * before setting up the misc vector or we get a race and the vector
8713          * ends up disabled forever.
8714          */
8715         clear_bit(__I40E_DOWN, &pf->state);
8716
8717         /* In case of MSIX we are going to setup the misc vector right here
8718          * to handle admin queue events etc. In case of legacy and MSI
8719          * the misc functionality and queue processing is combined in
8720          * the same vector and that gets setup at open.
8721          */
8722         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8723                 err = i40e_setup_misc_vector(pf);
8724                 if (err) {
8725                         dev_info(&pdev->dev,
8726                                  "setup of misc vector failed: %d\n", err);
8727                         goto err_vsis;
8728                 }
8729         }
8730
8731 #ifdef CONFIG_PCI_IOV
8732         /* prep for VF support */
8733         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8734             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8735             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8736                 u32 val;
8737
8738                 /* disable link interrupts for VFs */
8739                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8740                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8741                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8742                 i40e_flush(hw);
8743
8744                 if (pci_num_vf(pdev)) {
8745                         dev_info(&pdev->dev,
8746                                  "Active VFs found, allocating resources.\n");
8747                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8748                         if (err)
8749                                 dev_info(&pdev->dev,
8750                                          "Error %d allocating resources for existing VFs\n",
8751                                          err);
8752                 }
8753         }
8754 #endif /* CONFIG_PCI_IOV */
8755
8756         pfs_found++;
8757
8758         i40e_dbg_pf_init(pf);
8759
8760         /* tell the firmware that we're starting */
8761         i40e_send_version(pf);
8762
8763         /* since everything's happy, start the service_task timer */
8764         mod_timer(&pf->service_timer,
8765                   round_jiffies(jiffies + pf->service_timer_period));
8766
8767         /* Get the negotiated link width and speed from PCI config space */
8768         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8769
8770         i40e_set_pci_config_data(hw, link_status);
8771
8772         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8773                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8774                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8775                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8776                  "Unknown"),
8777                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8778                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8779                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8780                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8781                  "Unknown"));
8782
8783         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8784             hw->bus.speed < i40e_bus_speed_8000) {
8785                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8786                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8787         }
8788
8789         /* print a string summarizing features */
8790         i40e_print_features(pf);
8791
8792         return 0;
8793
8794         /* Unwind what we've done if something failed in the setup */
8795 err_vsis:
8796         set_bit(__I40E_DOWN, &pf->state);
8797         i40e_clear_interrupt_scheme(pf);
8798         kfree(pf->vsi);
8799 err_switch_setup:
8800         i40e_reset_interrupt_capability(pf);
8801         del_timer_sync(&pf->service_timer);
8802 err_mac_addr:
8803 err_configure_lan_hmc:
8804         (void)i40e_shutdown_lan_hmc(hw);
8805 err_init_lan_hmc:
8806         kfree(pf->qp_pile);
8807         kfree(pf->irq_pile);
8808 err_sw_init:
8809 err_adminq_setup:
8810         (void)i40e_shutdown_adminq(hw);
8811 err_pf_reset:
8812         iounmap(hw->hw_addr);
8813 err_ioremap:
8814         kfree(pf);
8815 err_pf_alloc:
8816         pci_disable_pcie_error_reporting(pdev);
8817         pci_release_selected_regions(pdev,
8818                                      pci_select_bars(pdev, IORESOURCE_MEM));
8819 err_pci_reg:
8820 err_dma:
8821         pci_disable_device(pdev);
8822         return err;
8823 }
8824
8825 /**
8826  * i40e_remove - Device removal routine
8827  * @pdev: PCI device information struct
8828  *
8829  * i40e_remove is called by the PCI subsystem to alert the driver
8830  * that is should release a PCI device.  This could be caused by a
8831  * Hot-Plug event, or because the driver is going to be removed from
8832  * memory.
8833  **/
8834 static void i40e_remove(struct pci_dev *pdev)
8835 {
8836         struct i40e_pf *pf = pci_get_drvdata(pdev);
8837         i40e_status ret_code;
8838         u32 reg;
8839         int i;
8840
8841         i40e_dbg_pf_exit(pf);
8842
8843         i40e_ptp_stop(pf);
8844
8845         /* no more scheduling of any task */
8846         set_bit(__I40E_DOWN, &pf->state);
8847         del_timer_sync(&pf->service_timer);
8848         cancel_work_sync(&pf->service_task);
8849
8850         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8851                 i40e_free_vfs(pf);
8852                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8853         }
8854
8855         i40e_fdir_teardown(pf);
8856
8857         /* If there is a switch structure or any orphans, remove them.
8858          * This will leave only the PF's VSI remaining.
8859          */
8860         for (i = 0; i < I40E_MAX_VEB; i++) {
8861                 if (!pf->veb[i])
8862                         continue;
8863
8864                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8865                     pf->veb[i]->uplink_seid == 0)
8866                         i40e_switch_branch_release(pf->veb[i]);
8867         }
8868
8869         /* Now we can shutdown the PF's VSI, just before we kill
8870          * adminq and hmc.
8871          */
8872         if (pf->vsi[pf->lan_vsi])
8873                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8874
8875         i40e_stop_misc_vector(pf);
8876         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8877                 synchronize_irq(pf->msix_entries[0].vector);
8878                 free_irq(pf->msix_entries[0].vector, pf);
8879         }
8880
8881         /* shutdown and destroy the HMC */
8882         if (pf->hw.hmc.hmc_obj) {
8883                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8884                 if (ret_code)
8885                         dev_warn(&pdev->dev,
8886                                  "Failed to destroy the HMC resources: %d\n",
8887                                  ret_code);
8888         }
8889
8890         /* shutdown the adminq */
8891         ret_code = i40e_shutdown_adminq(&pf->hw);
8892         if (ret_code)
8893                 dev_warn(&pdev->dev,
8894                          "Failed to destroy the Admin Queue resources: %d\n",
8895                          ret_code);
8896
8897         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8898         i40e_clear_interrupt_scheme(pf);
8899         for (i = 0; i < pf->num_alloc_vsi; i++) {
8900                 if (pf->vsi[i]) {
8901                         i40e_vsi_clear_rings(pf->vsi[i]);
8902                         i40e_vsi_clear(pf->vsi[i]);
8903                         pf->vsi[i] = NULL;
8904                 }
8905         }
8906
8907         for (i = 0; i < I40E_MAX_VEB; i++) {
8908                 kfree(pf->veb[i]);
8909                 pf->veb[i] = NULL;
8910         }
8911
8912         kfree(pf->qp_pile);
8913         kfree(pf->irq_pile);
8914         kfree(pf->vsi);
8915
8916         /* force a PF reset to clean anything leftover */
8917         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8918         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8919         i40e_flush(&pf->hw);
8920
8921         iounmap(pf->hw.hw_addr);
8922         kfree(pf);
8923         pci_release_selected_regions(pdev,
8924                                      pci_select_bars(pdev, IORESOURCE_MEM));
8925
8926         pci_disable_pcie_error_reporting(pdev);
8927         pci_disable_device(pdev);
8928 }
8929
8930 /**
8931  * i40e_pci_error_detected - warning that something funky happened in PCI land
8932  * @pdev: PCI device information struct
8933  *
8934  * Called to warn that something happened and the error handling steps
8935  * are in progress.  Allows the driver to quiesce things, be ready for
8936  * remediation.
8937  **/
8938 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8939                                                 enum pci_channel_state error)
8940 {
8941         struct i40e_pf *pf = pci_get_drvdata(pdev);
8942
8943         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8944
8945         /* shutdown all operations */
8946         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8947                 rtnl_lock();
8948                 i40e_prep_for_reset(pf);
8949                 rtnl_unlock();
8950         }
8951
8952         /* Request a slot reset */
8953         return PCI_ERS_RESULT_NEED_RESET;
8954 }
8955
8956 /**
8957  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8958  * @pdev: PCI device information struct
8959  *
8960  * Called to find if the driver can work with the device now that
8961  * the pci slot has been reset.  If a basic connection seems good
8962  * (registers are readable and have sane content) then return a
8963  * happy little PCI_ERS_RESULT_xxx.
8964  **/
8965 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8966 {
8967         struct i40e_pf *pf = pci_get_drvdata(pdev);
8968         pci_ers_result_t result;
8969         int err;
8970         u32 reg;
8971
8972         dev_info(&pdev->dev, "%s\n", __func__);
8973         if (pci_enable_device_mem(pdev)) {
8974                 dev_info(&pdev->dev,
8975                          "Cannot re-enable PCI device after reset.\n");
8976                 result = PCI_ERS_RESULT_DISCONNECT;
8977         } else {
8978                 pci_set_master(pdev);
8979                 pci_restore_state(pdev);
8980                 pci_save_state(pdev);
8981                 pci_wake_from_d3(pdev, false);
8982
8983                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8984                 if (reg == 0)
8985                         result = PCI_ERS_RESULT_RECOVERED;
8986                 else
8987                         result = PCI_ERS_RESULT_DISCONNECT;
8988         }
8989
8990         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8991         if (err) {
8992                 dev_info(&pdev->dev,
8993                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8994                          err);
8995                 /* non-fatal, continue */
8996         }
8997
8998         return result;
8999 }
9000
9001 /**
9002  * i40e_pci_error_resume - restart operations after PCI error recovery
9003  * @pdev: PCI device information struct
9004  *
9005  * Called to allow the driver to bring things back up after PCI error
9006  * and/or reset recovery has finished.
9007  **/
9008 static void i40e_pci_error_resume(struct pci_dev *pdev)
9009 {
9010         struct i40e_pf *pf = pci_get_drvdata(pdev);
9011
9012         dev_info(&pdev->dev, "%s\n", __func__);
9013         if (test_bit(__I40E_SUSPENDED, &pf->state))
9014                 return;
9015
9016         rtnl_lock();
9017         i40e_handle_reset_warning(pf);
9018         rtnl_lock();
9019 }
9020
9021 /**
9022  * i40e_shutdown - PCI callback for shutting down
9023  * @pdev: PCI device information struct
9024  **/
9025 static void i40e_shutdown(struct pci_dev *pdev)
9026 {
9027         struct i40e_pf *pf = pci_get_drvdata(pdev);
9028         struct i40e_hw *hw = &pf->hw;
9029
9030         set_bit(__I40E_SUSPENDED, &pf->state);
9031         set_bit(__I40E_DOWN, &pf->state);
9032         rtnl_lock();
9033         i40e_prep_for_reset(pf);
9034         rtnl_unlock();
9035
9036         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9037         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9038
9039         if (system_state == SYSTEM_POWER_OFF) {
9040                 pci_wake_from_d3(pdev, pf->wol_en);
9041                 pci_set_power_state(pdev, PCI_D3hot);
9042         }
9043 }
9044
9045 #ifdef CONFIG_PM
9046 /**
9047  * i40e_suspend - PCI callback for moving to D3
9048  * @pdev: PCI device information struct
9049  **/
9050 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9051 {
9052         struct i40e_pf *pf = pci_get_drvdata(pdev);
9053         struct i40e_hw *hw = &pf->hw;
9054
9055         set_bit(__I40E_SUSPENDED, &pf->state);
9056         set_bit(__I40E_DOWN, &pf->state);
9057         rtnl_lock();
9058         i40e_prep_for_reset(pf);
9059         rtnl_unlock();
9060
9061         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9062         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9063
9064         pci_wake_from_d3(pdev, pf->wol_en);
9065         pci_set_power_state(pdev, PCI_D3hot);
9066
9067         return 0;
9068 }
9069
9070 /**
9071  * i40e_resume - PCI callback for waking up from D3
9072  * @pdev: PCI device information struct
9073  **/
9074 static int i40e_resume(struct pci_dev *pdev)
9075 {
9076         struct i40e_pf *pf = pci_get_drvdata(pdev);
9077         u32 err;
9078
9079         pci_set_power_state(pdev, PCI_D0);
9080         pci_restore_state(pdev);
9081         /* pci_restore_state() clears dev->state_saves, so
9082          * call pci_save_state() again to restore it.
9083          */
9084         pci_save_state(pdev);
9085
9086         err = pci_enable_device_mem(pdev);
9087         if (err) {
9088                 dev_err(&pdev->dev,
9089                         "%s: Cannot enable PCI device from suspend\n",
9090                         __func__);
9091                 return err;
9092         }
9093         pci_set_master(pdev);
9094
9095         /* no wakeup events while running */
9096         pci_wake_from_d3(pdev, false);
9097
9098         /* handling the reset will rebuild the device state */
9099         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9100                 clear_bit(__I40E_DOWN, &pf->state);
9101                 rtnl_lock();
9102                 i40e_reset_and_rebuild(pf, false);
9103                 rtnl_unlock();
9104         }
9105
9106         return 0;
9107 }
9108
9109 #endif
9110 static const struct pci_error_handlers i40e_err_handler = {
9111         .error_detected = i40e_pci_error_detected,
9112         .slot_reset = i40e_pci_error_slot_reset,
9113         .resume = i40e_pci_error_resume,
9114 };
9115
9116 static struct pci_driver i40e_driver = {
9117         .name     = i40e_driver_name,
9118         .id_table = i40e_pci_tbl,
9119         .probe    = i40e_probe,
9120         .remove   = i40e_remove,
9121 #ifdef CONFIG_PM
9122         .suspend  = i40e_suspend,
9123         .resume   = i40e_resume,
9124 #endif
9125         .shutdown = i40e_shutdown,
9126         .err_handler = &i40e_err_handler,
9127         .sriov_configure = i40e_pci_sriov_configure,
9128 };
9129
9130 /**
9131  * i40e_init_module - Driver registration routine
9132  *
9133  * i40e_init_module is the first routine called when the driver is
9134  * loaded. All it does is register with the PCI subsystem.
9135  **/
9136 static int __init i40e_init_module(void)
9137 {
9138         pr_info("%s: %s - version %s\n", i40e_driver_name,
9139                 i40e_driver_string, i40e_driver_version_str);
9140         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9141         i40e_dbg_init();
9142         return pci_register_driver(&i40e_driver);
9143 }
9144 module_init(i40e_init_module);
9145
9146 /**
9147  * i40e_exit_module - Driver exit cleanup routine
9148  *
9149  * i40e_exit_module is called just before the driver is removed
9150  * from memory.
9151  **/
9152 static void __exit i40e_exit_module(void)
9153 {
9154         pci_unregister_driver(&i40e_driver);
9155         i40e_dbg_exit();
9156 }
9157 module_exit(i40e_exit_module);