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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 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 1
  41 #define DRV_VERSION_MINOR 2
  42 #define DRV_VERSION_BUILD 43
  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 const struct pci_device_id 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         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  79         /* required last entry */
  80         {0, }
  81 };
  82 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  83
  84 #define I40E_MAX_VF_COUNT 128
  85 static int debug = -1;
  86 module_param(debug, int, 0);
  87 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  88
  89 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  90 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  91 MODULE_LICENSE("GPL");
  92 MODULE_VERSION(DRV_VERSION);
  93
  94 /**
  95  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  96  * @hw:   pointer to the HW structure
  97  * @mem:  ptr to mem struct to fill out
  98  * @size: size of memory requested
  99  * @alignment: what to align the allocation to
 100  **/
 101 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 102                             u64 size, u32 alignment)
 103 {
 104         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 105
 106         mem->size = ALIGN(size, alignment);
 107         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 108                                       &mem->pa, GFP_KERNEL);
 109         if (!mem->va)
 110                 return -ENOMEM;
 111
 112         return 0;
 113 }
 114
 115 /**
 116  * i40e_free_dma_mem_d - OS specific memory free for shared code
 117  * @hw:   pointer to the HW structure
 118  * @mem:  ptr to mem struct to free
 119  **/
 120 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 121 {
 122         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 123
 124         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 125         mem->va = NULL;
 126         mem->pa = 0;
 127         mem->size = 0;
 128
 129         return 0;
 130 }
 131
 132 /**
 133  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 134  * @hw:   pointer to the HW structure
 135  * @mem:  ptr to mem struct to fill out
 136  * @size: size of memory requested
 137  **/
 138 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 139                              u32 size)
 140 {
 141         mem->size = size;
 142         mem->va = kzalloc(size, GFP_KERNEL);
 143
 144         if (!mem->va)
 145                 return -ENOMEM;
 146
 147         return 0;
 148 }
 149
 150 /**
 151  * i40e_free_virt_mem_d - OS specific memory free for shared code
 152  * @hw:   pointer to the HW structure
 153  * @mem:  ptr to mem struct to free
 154  **/
 155 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 156 {
 157         /* it's ok to kfree a NULL pointer */
 158         kfree(mem->va);
 159         mem->va = NULL;
 160         mem->size = 0;
 161
 162         return 0;
 163 }
 164
 165 /**
 166  * i40e_get_lump - find a lump of free generic resource
 167  * @pf: board private structure
 168  * @pile: the pile of resource to search
 169  * @needed: the number of items needed
 170  * @id: an owner id to stick on the items assigned
 171  *
 172  * Returns the base item index of the lump, or negative for error
 173  *
 174  * The search_hint trick and lack of advanced fit-finding only work
 175  * because we're highly likely to have all the same size lump requests.
 176  * Linear search time and any fragmentation should be minimal.
 177  **/
 178 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 179                          u16 needed, u16 id)
 180 {
 181         int ret = -ENOMEM;
 182         int i, j;
 183
 184         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 185                 dev_info(&pf->pdev->dev,
 186                          "param err: pile=%p needed=%d id=0x%04x\n",
 187                          pile, needed, id);
 188                 return -EINVAL;
 189         }
 190
 191         /* start the linear search with an imperfect hint */
 192         i = pile->search_hint;
 193         while (i < pile->num_entries) {
 194                 /* skip already allocated entries */
 195                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 196                         i++;
 197                         continue;
 198                 }
 199
 200                 /* do we have enough in this lump? */
 201                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 202                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 203                                 break;
 204                 }
 205
 206                 if (j == needed) {
 207                         /* there was enough, so assign it to the requestor */
 208                         for (j = 0; j < needed; j++)
 209                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 210                         ret = i;
 211                         pile->search_hint = i + j;
 212                         break;
 213                 } else {
 214                         /* not enough, so skip over it and continue looking */
 215                         i += j;
 216                 }
 217         }
 218
 219         return ret;
 220 }
 221
 222 /**
 223  * i40e_put_lump - return a lump of generic resource
 224  * @pile: the pile of resource to search
 225  * @index: the base item index
 226  * @id: the owner id of the items assigned
 227  *
 228  * Returns the count of items in the lump
 229  **/
 230 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 231 {
 232         int valid_id = (id | I40E_PILE_VALID_BIT);
 233         int count = 0;
 234         int i;
 235
 236         if (!pile || index >= pile->num_entries)
 237                 return -EINVAL;
 238
 239         for (i = index;
 240              i < pile->num_entries && pile->list[i] == valid_id;
 241              i++) {
 242                 pile->list[i] = 0;
 243                 count++;
 244         }
 245
 246         if (count && index < pile->search_hint)
 247                 pile->search_hint = index;
 248
 249         return count;
 250 }
 251
 252 /**
 253  * i40e_service_event_schedule - Schedule the service task to wake up
 254  * @pf: board private structure
 255  *
 256  * If not already scheduled, this puts the task into the work queue
 257  **/
 258 static void i40e_service_event_schedule(struct i40e_pf *pf)
 259 {
 260         if (!test_bit(__I40E_DOWN, &pf->state) &&
 261             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 262             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 263                 schedule_work(&pf->service_task);
 264 }
 265
 266 /**
 267  * i40e_tx_timeout - Respond to a Tx Hang
 268  * @netdev: network interface device structure
 269  *
 270  * If any port has noticed a Tx timeout, it is likely that the whole
 271  * device is munged, not just the one netdev port, so go for the full
 272  * reset.
 273  **/
 274 #ifdef I40E_FCOE
 275 void i40e_tx_timeout(struct net_device *netdev)
 276 #else
 277 static void i40e_tx_timeout(struct net_device *netdev)
 278 #endif
 279 {
 280         struct i40e_netdev_priv *np = netdev_priv(netdev);
 281         struct i40e_vsi *vsi = np->vsi;
 282         struct i40e_pf *pf = vsi->back;
 283
 284         pf->tx_timeout_count++;
 285
 286         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 287                 pf->tx_timeout_recovery_level = 1;
 288         pf->tx_timeout_last_recovery = jiffies;
 289         netdev_info(netdev, "tx_timeout recovery level %d\n",
 290                     pf->tx_timeout_recovery_level);
 291
 292         switch (pf->tx_timeout_recovery_level) {
 293         case 0:
 294                 /* disable and re-enable queues for the VSI */
 295                 if (in_interrupt()) {
 296                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 297                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 298                 } else {
 299                         i40e_vsi_reinit_locked(vsi);
 300                 }
 301                 break;
 302         case 1:
 303                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 304                 break;
 305         case 2:
 306                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 307                 break;
 308         case 3:
 309                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 310                 break;
 311         default:
 312                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 313                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 314                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 315                 break;
 316         }
 317         i40e_service_event_schedule(pf);
 318         pf->tx_timeout_recovery_level++;
 319 }
 320
 321 /**
 322  * i40e_release_rx_desc - Store the new tail and head values
 323  * @rx_ring: ring to bump
 324  * @val: new head index
 325  **/
 326 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 327 {
 328         rx_ring->next_to_use = val;
 329
 330         /* Force memory writes to complete before letting h/w
 331          * know there are new descriptors to fetch.  (Only
 332          * applicable for weak-ordered memory model archs,
 333          * such as IA-64).
 334          */
 335         wmb();
 336         writel(val, rx_ring->tail);
 337 }
 338
 339 /**
 340  * i40e_get_vsi_stats_struct - Get System Network Statistics
 341  * @vsi: the VSI we care about
 342  *
 343  * Returns the address of the device statistics structure.
 344  * The statistics are actually updated from the service task.
 345  **/
 346 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 347 {
 348         return &vsi->net_stats;
 349 }
 350
 351 /**
 352  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 353  * @netdev: network interface device structure
 354  *
 355  * Returns the address of the device statistics structure.
 356  * The statistics are actually updated from the service task.
 357  **/
 358 #ifdef I40E_FCOE
 359 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 360                                              struct net_device *netdev,
 361                                              struct rtnl_link_stats64 *stats)
 362 #else
 363 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 364                                              struct net_device *netdev,
 365                                              struct rtnl_link_stats64 *stats)
 366 #endif
 367 {
 368         struct i40e_netdev_priv *np = netdev_priv(netdev);
 369         struct i40e_ring *tx_ring, *rx_ring;
 370         struct i40e_vsi *vsi = np->vsi;
 371         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 372         int i;
 373
 374         if (test_bit(__I40E_DOWN, &vsi->state))
 375                 return stats;
 376
 377         if (!vsi->tx_rings)
 378                 return stats;
 379
 380         rcu_read_lock();
 381         for (i = 0; i < vsi->num_queue_pairs; i++) {
 382                 u64 bytes, packets;
 383                 unsigned int start;
 384
 385                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 386                 if (!tx_ring)
 387                         continue;
 388
 389                 do {
 390                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 391                         packets = tx_ring->stats.packets;
 392                         bytes   = tx_ring->stats.bytes;
 393                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 394
 395                 stats->tx_packets += packets;
 396                 stats->tx_bytes   += bytes;
 397                 rx_ring = &tx_ring[1];
 398
 399                 do {
 400                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 401                         packets = rx_ring->stats.packets;
 402                         bytes   = rx_ring->stats.bytes;
 403                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 404
 405                 stats->rx_packets += packets;
 406                 stats->rx_bytes   += bytes;
 407         }
 408         rcu_read_unlock();
 409
 410         /* following stats updated by i40e_watchdog_subtask() */
 411         stats->multicast        = vsi_stats->multicast;
 412         stats->tx_errors        = vsi_stats->tx_errors;
 413         stats->tx_dropped       = vsi_stats->tx_dropped;
 414         stats->rx_errors        = vsi_stats->rx_errors;
 415         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 416         stats->rx_length_errors = vsi_stats->rx_length_errors;
 417
 418         return stats;
 419 }
 420
 421 /**
 422  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 423  * @vsi: the VSI to have its stats reset
 424  **/
 425 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 426 {
 427         struct rtnl_link_stats64 *ns;
 428         int i;
 429
 430         if (!vsi)
 431                 return;
 432
 433         ns = i40e_get_vsi_stats_struct(vsi);
 434         memset(ns, 0, sizeof(*ns));
 435         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 436         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 437         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 438         if (vsi->rx_rings && vsi->rx_rings[0]) {
 439                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 440                         memset(&vsi->rx_rings[i]->stats, 0 ,
 441                                sizeof(vsi->rx_rings[i]->stats));
 442                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 443                                sizeof(vsi->rx_rings[i]->rx_stats));
 444                         memset(&vsi->tx_rings[i]->stats, 0 ,
 445                                sizeof(vsi->tx_rings[i]->stats));
 446                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 447                                sizeof(vsi->tx_rings[i]->tx_stats));
 448                 }
 449         }
 450         vsi->stat_offsets_loaded = false;
 451 }
 452
 453 /**
 454  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 455  * @pf: the PF to be reset
 456  **/
 457 void i40e_pf_reset_stats(struct i40e_pf *pf)
 458 {
 459         int i;
 460
 461         memset(&pf->stats, 0, sizeof(pf->stats));
 462         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 463         pf->stat_offsets_loaded = false;
 464
 465         for (i = 0; i < I40E_MAX_VEB; i++) {
 466                 if (pf->veb[i]) {
 467                         memset(&pf->veb[i]->stats, 0,
 468                                sizeof(pf->veb[i]->stats));
 469                         memset(&pf->veb[i]->stats_offsets, 0,
 470                                sizeof(pf->veb[i]->stats_offsets));
 471                         pf->veb[i]->stat_offsets_loaded = false;
 472                 }
 473         }
 474 }
 475
 476 /**
 477  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 478  * @hw: ptr to the hardware info
 479  * @hireg: the high 32 bit reg to read
 480  * @loreg: the low 32 bit reg to read
 481  * @offset_loaded: has the initial offset been loaded yet
 482  * @offset: ptr to current offset value
 483  * @stat: ptr to the stat
 484  *
 485  * Since the device stats are not reset at PFReset, they likely will not
 486  * be zeroed when the driver starts.  We'll save the first values read
 487  * and use them as offsets to be subtracted from the raw values in order
 488  * to report stats that count from zero.  In the process, we also manage
 489  * the potential roll-over.
 490  **/
 491 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 492                                bool offset_loaded, u64 *offset, u64 *stat)
 493 {
 494         u64 new_data;
 495
 496         if (hw->device_id == I40E_DEV_ID_QEMU) {
 497                 new_data = rd32(hw, loreg);
 498                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 499         } else {
 500                 new_data = rd64(hw, loreg);
 501         }
 502         if (!offset_loaded)
 503                 *offset = new_data;
 504         if (likely(new_data >= *offset))
 505                 *stat = new_data - *offset;
 506         else
 507                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 508         *stat &= 0xFFFFFFFFFFFFULL;
 509 }
 510
 511 /**
 512  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 513  * @hw: ptr to the hardware info
 514  * @reg: the hw reg to read
 515  * @offset_loaded: has the initial offset been loaded yet
 516  * @offset: ptr to current offset value
 517  * @stat: ptr to the stat
 518  **/
 519 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 520                                bool offset_loaded, u64 *offset, u64 *stat)
 521 {
 522         u32 new_data;
 523
 524         new_data = rd32(hw, reg);
 525         if (!offset_loaded)
 526                 *offset = new_data;
 527         if (likely(new_data >= *offset))
 528                 *stat = (u32)(new_data - *offset);
 529         else
 530                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 531 }
 532
 533 /**
 534  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 535  * @vsi: the VSI to be updated
 536  **/
 537 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 538 {
 539         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 540         struct i40e_pf *pf = vsi->back;
 541         struct i40e_hw *hw = &pf->hw;
 542         struct i40e_eth_stats *oes;
 543         struct i40e_eth_stats *es;     /* device's eth stats */
 544
 545         es = &vsi->eth_stats;
 546         oes = &vsi->eth_stats_offsets;
 547
 548         /* Gather up the stats that the hw collects */
 549         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 550                            vsi->stat_offsets_loaded,
 551                            &oes->tx_errors, &es->tx_errors);
 552         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 553                            vsi->stat_offsets_loaded,
 554                            &oes->rx_discards, &es->rx_discards);
 555         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 556                            vsi->stat_offsets_loaded,
 557                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 558         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 559                            vsi->stat_offsets_loaded,
 560                            &oes->tx_errors, &es->tx_errors);
 561
 562         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 563                            I40E_GLV_GORCL(stat_idx),
 564                            vsi->stat_offsets_loaded,
 565                            &oes->rx_bytes, &es->rx_bytes);
 566         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 567                            I40E_GLV_UPRCL(stat_idx),
 568                            vsi->stat_offsets_loaded,
 569                            &oes->rx_unicast, &es->rx_unicast);
 570         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 571                            I40E_GLV_MPRCL(stat_idx),
 572                            vsi->stat_offsets_loaded,
 573                            &oes->rx_multicast, &es->rx_multicast);
 574         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 575                            I40E_GLV_BPRCL(stat_idx),
 576                            vsi->stat_offsets_loaded,
 577                            &oes->rx_broadcast, &es->rx_broadcast);
 578
 579         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 580                            I40E_GLV_GOTCL(stat_idx),
 581                            vsi->stat_offsets_loaded,
 582                            &oes->tx_bytes, &es->tx_bytes);
 583         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 584                            I40E_GLV_UPTCL(stat_idx),
 585                            vsi->stat_offsets_loaded,
 586                            &oes->tx_unicast, &es->tx_unicast);
 587         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 588                            I40E_GLV_MPTCL(stat_idx),
 589                            vsi->stat_offsets_loaded,
 590                            &oes->tx_multicast, &es->tx_multicast);
 591         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 592                            I40E_GLV_BPTCL(stat_idx),
 593                            vsi->stat_offsets_loaded,
 594                            &oes->tx_broadcast, &es->tx_broadcast);
 595         vsi->stat_offsets_loaded = true;
 596 }
 597
 598 /**
 599  * i40e_update_veb_stats - Update Switch component statistics
 600  * @veb: the VEB being updated
 601  **/
 602 static void i40e_update_veb_stats(struct i40e_veb *veb)
 603 {
 604         struct i40e_pf *pf = veb->pf;
 605         struct i40e_hw *hw = &pf->hw;
 606         struct i40e_eth_stats *oes;
 607         struct i40e_eth_stats *es;     /* device's eth stats */
 608         int idx = 0;
 609
 610         idx = veb->stats_idx;
 611         es = &veb->stats;
 612         oes = &veb->stats_offsets;
 613
 614         /* Gather up the stats that the hw collects */
 615         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 616                            veb->stat_offsets_loaded,
 617                            &oes->tx_discards, &es->tx_discards);
 618         if (hw->revision_id > 0)
 619                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 620                                    veb->stat_offsets_loaded,
 621                                    &oes->rx_unknown_protocol,
 622                                    &es->rx_unknown_protocol);
 623         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 624                            veb->stat_offsets_loaded,
 625                            &oes->rx_bytes, &es->rx_bytes);
 626         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 627                            veb->stat_offsets_loaded,
 628                            &oes->rx_unicast, &es->rx_unicast);
 629         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 630                            veb->stat_offsets_loaded,
 631                            &oes->rx_multicast, &es->rx_multicast);
 632         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 633                            veb->stat_offsets_loaded,
 634                            &oes->rx_broadcast, &es->rx_broadcast);
 635
 636         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 637                            veb->stat_offsets_loaded,
 638                            &oes->tx_bytes, &es->tx_bytes);
 639         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 640                            veb->stat_offsets_loaded,
 641                            &oes->tx_unicast, &es->tx_unicast);
 642         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 643                            veb->stat_offsets_loaded,
 644                            &oes->tx_multicast, &es->tx_multicast);
 645         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 646                            veb->stat_offsets_loaded,
 647                            &oes->tx_broadcast, &es->tx_broadcast);
 648         veb->stat_offsets_loaded = true;
 649 }
 650
 651 #ifdef I40E_FCOE
 652 /**
 653  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 654  * @vsi: the VSI that is capable of doing FCoE
 655  **/
 656 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 657 {
 658         struct i40e_pf *pf = vsi->back;
 659         struct i40e_hw *hw = &pf->hw;
 660         struct i40e_fcoe_stats *ofs;
 661         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 662         int idx;
 663
 664         if (vsi->type != I40E_VSI_FCOE)
 665                 return;
 666
 667         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 668         fs = &vsi->fcoe_stats;
 669         ofs = &vsi->fcoe_stats_offsets;
 670
 671         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 672                            vsi->fcoe_stat_offsets_loaded,
 673                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 674         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 675                            vsi->fcoe_stat_offsets_loaded,
 676                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 677         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 678                            vsi->fcoe_stat_offsets_loaded,
 679                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 680         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 681                            vsi->fcoe_stat_offsets_loaded,
 682                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 683         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 684                            vsi->fcoe_stat_offsets_loaded,
 685                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 686         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 687                            vsi->fcoe_stat_offsets_loaded,
 688                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 689         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 690                            vsi->fcoe_stat_offsets_loaded,
 691                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 692         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 693                            vsi->fcoe_stat_offsets_loaded,
 694                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 695
 696         vsi->fcoe_stat_offsets_loaded = true;
 697 }
 698
 699 #endif
 700 /**
 701  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 702  * @pf: the corresponding PF
 703  *
 704  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 705  **/
 706 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 707 {
 708         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 709         struct i40e_hw_port_stats *nsd = &pf->stats;
 710         struct i40e_hw *hw = &pf->hw;
 711         u64 xoff = 0;
 712         u16 i, v;
 713
 714         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 715             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 716                 return;
 717
 718         xoff = nsd->link_xoff_rx;
 719         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 720                            pf->stat_offsets_loaded,
 721                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 722
 723         /* No new LFC xoff rx */
 724         if (!(nsd->link_xoff_rx - xoff))
 725                 return;
 726
 727         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 728         for (v = 0; v < pf->num_alloc_vsi; v++) {
 729                 struct i40e_vsi *vsi = pf->vsi[v];
 730
 731                 if (!vsi || !vsi->tx_rings[0])
 732                         continue;
 733
 734                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 735                         struct i40e_ring *ring = vsi->tx_rings[i];
 736                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 737                 }
 738         }
 739 }
 740
 741 /**
 742  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 743  * @pf: the corresponding PF
 744  *
 745  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 746  **/
 747 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 748 {
 749         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 750         struct i40e_hw_port_stats *nsd = &pf->stats;
 751         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 752         struct i40e_dcbx_config *dcb_cfg;
 753         struct i40e_hw *hw = &pf->hw;
 754         u16 i, v;
 755         u8 tc;
 756
 757         dcb_cfg = &hw->local_dcbx_config;
 758
 759         /* See if DCB enabled with PFC TC */
 760         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 761             !(dcb_cfg->pfc.pfcenable)) {
 762                 i40e_update_link_xoff_rx(pf);
 763                 return;
 764         }
 765
 766         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 767                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 768                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 769                                    pf->stat_offsets_loaded,
 770                                    &osd->priority_xoff_rx[i],
 771                                    &nsd->priority_xoff_rx[i]);
 772
 773                 /* No new PFC xoff rx */
 774                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 775                         continue;
 776                 /* Get the TC for given priority */
 777                 tc = dcb_cfg->etscfg.prioritytable[i];
 778                 xoff[tc] = true;
 779         }
 780
 781         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 782         for (v = 0; v < pf->num_alloc_vsi; v++) {
 783                 struct i40e_vsi *vsi = pf->vsi[v];
 784
 785                 if (!vsi || !vsi->tx_rings[0])
 786                         continue;
 787
 788                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 789                         struct i40e_ring *ring = vsi->tx_rings[i];
 790
 791                         tc = ring->dcb_tc;
 792                         if (xoff[tc])
 793                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 794                                           &ring->state);
 795                 }
 796         }
 797 }
 798
 799 /**
 800  * i40e_update_vsi_stats - Update the vsi statistics counters.
 801  * @vsi: the VSI to be updated
 802  *
 803  * There are a few instances where we store the same stat in a
 804  * couple of different structs.  This is partly because we have
 805  * the netdev stats that need to be filled out, which is slightly
 806  * different from the "eth_stats" defined by the chip and used in
 807  * VF communications.  We sort it out here.
 808  **/
 809 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 810 {
 811         struct i40e_pf *pf = vsi->back;
 812         struct rtnl_link_stats64 *ons;
 813         struct rtnl_link_stats64 *ns;   /* netdev stats */
 814         struct i40e_eth_stats *oes;
 815         struct i40e_eth_stats *es;     /* device's eth stats */
 816         u32 tx_restart, tx_busy;
 817         struct i40e_ring *p;
 818         u32 rx_page, rx_buf;
 819         u64 bytes, packets;
 820         unsigned int start;
 821         u64 rx_p, rx_b;
 822         u64 tx_p, tx_b;
 823         u16 q;
 824
 825         if (test_bit(__I40E_DOWN, &vsi->state) ||
 826             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 827                 return;
 828
 829         ns = i40e_get_vsi_stats_struct(vsi);
 830         ons = &vsi->net_stats_offsets;
 831         es = &vsi->eth_stats;
 832         oes = &vsi->eth_stats_offsets;
 833
 834         /* Gather up the netdev and vsi stats that the driver collects
 835          * on the fly during packet processing
 836          */
 837         rx_b = rx_p = 0;
 838         tx_b = tx_p = 0;
 839         tx_restart = tx_busy = 0;
 840         rx_page = 0;
 841         rx_buf = 0;
 842         rcu_read_lock();
 843         for (q = 0; q < vsi->num_queue_pairs; q++) {
 844                 /* locate Tx ring */
 845                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 846
 847                 do {
 848                         start = u64_stats_fetch_begin_irq(&p->syncp);
 849                         packets = p->stats.packets;
 850                         bytes = p->stats.bytes;
 851                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 852                 tx_b += bytes;
 853                 tx_p += packets;
 854                 tx_restart += p->tx_stats.restart_queue;
 855                 tx_busy += p->tx_stats.tx_busy;
 856
 857                 /* Rx queue is part of the same block as Tx queue */
 858                 p = &p[1];
 859                 do {
 860                         start = u64_stats_fetch_begin_irq(&p->syncp);
 861                         packets = p->stats.packets;
 862                         bytes = p->stats.bytes;
 863                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 864                 rx_b += bytes;
 865                 rx_p += packets;
 866                 rx_buf += p->rx_stats.alloc_buff_failed;
 867                 rx_page += p->rx_stats.alloc_page_failed;
 868         }
 869         rcu_read_unlock();
 870         vsi->tx_restart = tx_restart;
 871         vsi->tx_busy = tx_busy;
 872         vsi->rx_page_failed = rx_page;
 873         vsi->rx_buf_failed = rx_buf;
 874
 875         ns->rx_packets = rx_p;
 876         ns->rx_bytes = rx_b;
 877         ns->tx_packets = tx_p;
 878         ns->tx_bytes = tx_b;
 879
 880         /* update netdev stats from eth stats */
 881         i40e_update_eth_stats(vsi);
 882         ons->tx_errors = oes->tx_errors;
 883         ns->tx_errors = es->tx_errors;
 884         ons->multicast = oes->rx_multicast;
 885         ns->multicast = es->rx_multicast;
 886         ons->rx_dropped = oes->rx_discards;
 887         ns->rx_dropped = es->rx_discards;
 888         ons->tx_dropped = oes->tx_discards;
 889         ns->tx_dropped = es->tx_discards;
 890
 891         /* pull in a couple PF stats if this is the main vsi */
 892         if (vsi == pf->vsi[pf->lan_vsi]) {
 893                 ns->rx_crc_errors = pf->stats.crc_errors;
 894                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 895                 ns->rx_length_errors = pf->stats.rx_length_errors;
 896         }
 897 }
 898
 899 /**
 900  * i40e_update_pf_stats - Update the PF statistics counters.
 901  * @pf: the PF to be updated
 902  **/
 903 static void i40e_update_pf_stats(struct i40e_pf *pf)
 904 {
 905         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 906         struct i40e_hw_port_stats *nsd = &pf->stats;
 907         struct i40e_hw *hw = &pf->hw;
 908         u32 val;
 909         int i;
 910
 911         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 912                            I40E_GLPRT_GORCL(hw->port),
 913                            pf->stat_offsets_loaded,
 914                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 915         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 916                            I40E_GLPRT_GOTCL(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 919         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 920                            pf->stat_offsets_loaded,
 921                            &osd->eth.rx_discards,
 922                            &nsd->eth.rx_discards);
 923         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 924                            I40E_GLPRT_UPRCL(hw->port),
 925                            pf->stat_offsets_loaded,
 926                            &osd->eth.rx_unicast,
 927                            &nsd->eth.rx_unicast);
 928         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 929                            I40E_GLPRT_MPRCL(hw->port),
 930                            pf->stat_offsets_loaded,
 931                            &osd->eth.rx_multicast,
 932                            &nsd->eth.rx_multicast);
 933         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 934                            I40E_GLPRT_BPRCL(hw->port),
 935                            pf->stat_offsets_loaded,
 936                            &osd->eth.rx_broadcast,
 937                            &nsd->eth.rx_broadcast);
 938         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 939                            I40E_GLPRT_UPTCL(hw->port),
 940                            pf->stat_offsets_loaded,
 941                            &osd->eth.tx_unicast,
 942                            &nsd->eth.tx_unicast);
 943         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 944                            I40E_GLPRT_MPTCL(hw->port),
 945                            pf->stat_offsets_loaded,
 946                            &osd->eth.tx_multicast,
 947                            &nsd->eth.tx_multicast);
 948         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 949                            I40E_GLPRT_BPTCL(hw->port),
 950                            pf->stat_offsets_loaded,
 951                            &osd->eth.tx_broadcast,
 952                            &nsd->eth.tx_broadcast);
 953
 954         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 955                            pf->stat_offsets_loaded,
 956                            &osd->tx_dropped_link_down,
 957                            &nsd->tx_dropped_link_down);
 958
 959         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 960                            pf->stat_offsets_loaded,
 961                            &osd->crc_errors, &nsd->crc_errors);
 962
 963         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->illegal_bytes, &nsd->illegal_bytes);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->mac_local_faults,
 970                            &nsd->mac_local_faults);
 971         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->mac_remote_faults,
 974                            &nsd->mac_remote_faults);
 975
 976         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->rx_length_errors,
 979                            &nsd->rx_length_errors);
 980
 981         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->link_xon_rx, &nsd->link_xon_rx);
 984         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->link_xon_tx, &nsd->link_xon_tx);
 987         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 988         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 991
 992         for (i = 0; i < 8; i++) {
 993                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 994                                    pf->stat_offsets_loaded,
 995                                    &osd->priority_xon_rx[i],
 996                                    &nsd->priority_xon_rx[i]);
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_tx[i],
1000                                    &nsd->priority_xon_tx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xoff_tx[i],
1004                                    &nsd->priority_xoff_tx[i]);
1005                 i40e_stat_update32(hw,
1006                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1007                                    pf->stat_offsets_loaded,
1008                                    &osd->priority_xon_2_xoff[i],
1009                                    &nsd->priority_xon_2_xoff[i]);
1010         }
1011
1012         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1013                            I40E_GLPRT_PRC64L(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->rx_size_64, &nsd->rx_size_64);
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1017                            I40E_GLPRT_PRC127L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_127, &nsd->rx_size_127);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1021                            I40E_GLPRT_PRC255L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_255, &nsd->rx_size_255);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1025                            I40E_GLPRT_PRC511L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_511, &nsd->rx_size_511);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1029                            I40E_GLPRT_PRC1023L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_1023, &nsd->rx_size_1023);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1033                            I40E_GLPRT_PRC1522L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1522, &nsd->rx_size_1522);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1037                            I40E_GLPRT_PRC9522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_big, &nsd->rx_size_big);
1040
1041         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1042                            I40E_GLPRT_PTC64L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->tx_size_64, &nsd->tx_size_64);
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1046                            I40E_GLPRT_PTC127L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_127, &nsd->tx_size_127);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1050                            I40E_GLPRT_PTC255L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_255, &nsd->tx_size_255);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1054                            I40E_GLPRT_PTC511L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_511, &nsd->tx_size_511);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1058                            I40E_GLPRT_PTC1023L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_1023, &nsd->tx_size_1023);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1062                            I40E_GLPRT_PTC1522L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1522, &nsd->tx_size_1522);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1066                            I40E_GLPRT_PTC9522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_big, &nsd->tx_size_big);
1069
1070         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->rx_undersize, &nsd->rx_undersize);
1073         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->rx_fragments, &nsd->rx_fragments);
1076         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->rx_oversize, &nsd->rx_oversize);
1079         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1080                            pf->stat_offsets_loaded,
1081                            &osd->rx_jabber, &nsd->rx_jabber);
1082
1083         /* FDIR stats */
1084         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1085                            pf->stat_offsets_loaded,
1086                            &osd->fd_atr_match, &nsd->fd_atr_match);
1087         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1088                            pf->stat_offsets_loaded,
1089                            &osd->fd_sb_match, &nsd->fd_sb_match);
1090
1091         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1092         nsd->tx_lpi_status =
1093                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1094                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1095         nsd->rx_lpi_status =
1096                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1097                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1098         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1099                            pf->stat_offsets_loaded,
1100                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1101         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1102                            pf->stat_offsets_loaded,
1103                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1104
1105         pf->stat_offsets_loaded = true;
1106 }
1107
1108 /**
1109  * i40e_update_stats - Update the various statistics counters.
1110  * @vsi: the VSI to be updated
1111  *
1112  * Update the various stats for this VSI and its related entities.
1113  **/
1114 void i40e_update_stats(struct i40e_vsi *vsi)
1115 {
1116         struct i40e_pf *pf = vsi->back;
1117
1118         if (vsi == pf->vsi[pf->lan_vsi])
1119                 i40e_update_pf_stats(pf);
1120
1121         i40e_update_vsi_stats(vsi);
1122 #ifdef I40E_FCOE
1123         i40e_update_fcoe_stats(vsi);
1124 #endif
1125 }
1126
1127 /**
1128  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1129  * @vsi: the VSI to be searched
1130  * @macaddr: the MAC address
1131  * @vlan: the vlan
1132  * @is_vf: make sure its a VF filter, else doesn't matter
1133  * @is_netdev: make sure its a netdev filter, else doesn't matter
1134  *
1135  * Returns ptr to the filter object or NULL
1136  **/
1137 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1138                                                 u8 *macaddr, s16 vlan,
1139                                                 bool is_vf, bool is_netdev)
1140 {
1141         struct i40e_mac_filter *f;
1142
1143         if (!vsi || !macaddr)
1144                 return NULL;
1145
1146         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1147                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1148                     (vlan == f->vlan)    &&
1149                     (!is_vf || f->is_vf) &&
1150                     (!is_netdev || f->is_netdev))
1151                         return f;
1152         }
1153         return NULL;
1154 }
1155
1156 /**
1157  * i40e_find_mac - Find a mac addr in the macvlan filters list
1158  * @vsi: the VSI to be searched
1159  * @macaddr: the MAC address we are searching for
1160  * @is_vf: make sure its a VF filter, else doesn't matter
1161  * @is_netdev: make sure its a netdev filter, else doesn't matter
1162  *
1163  * Returns the first filter with the provided MAC address or NULL if
1164  * MAC address was not found
1165  **/
1166 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1167                                       bool is_vf, bool is_netdev)
1168 {
1169         struct i40e_mac_filter *f;
1170
1171         if (!vsi || !macaddr)
1172                 return NULL;
1173
1174         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1175                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1176                     (!is_vf || f->is_vf) &&
1177                     (!is_netdev || f->is_netdev))
1178                         return f;
1179         }
1180         return NULL;
1181 }
1182
1183 /**
1184  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1185  * @vsi: the VSI to be searched
1186  *
1187  * Returns true if VSI is in vlan mode or false otherwise
1188  **/
1189 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1190 {
1191         struct i40e_mac_filter *f;
1192
1193         /* Only -1 for all the filters denotes not in vlan mode
1194          * so we have to go through all the list in order to make sure
1195          */
1196         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1197                 if (f->vlan >= 0)
1198                         return true;
1199         }
1200
1201         return false;
1202 }
1203
1204 /**
1205  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1206  * @vsi: the VSI to be searched
1207  * @macaddr: the mac address to be filtered
1208  * @is_vf: true if it is a VF
1209  * @is_netdev: true if it is a netdev
1210  *
1211  * Goes through all the macvlan filters and adds a
1212  * macvlan filter for each unique vlan that already exists
1213  *
1214  * Returns first filter found on success, else NULL
1215  **/
1216 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1217                                              bool is_vf, bool is_netdev)
1218 {
1219         struct i40e_mac_filter *f;
1220
1221         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1222                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1223                                       is_vf, is_netdev)) {
1224                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1225                                              is_vf, is_netdev))
1226                                 return NULL;
1227                 }
1228         }
1229
1230         return list_first_entry_or_null(&vsi->mac_filter_list,
1231                                         struct i40e_mac_filter, list);
1232 }
1233
1234 /**
1235  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1236  * @vsi: the PF Main VSI - inappropriate for any other VSI
1237  * @macaddr: the MAC address
1238  *
1239  * Some older firmware configurations set up a default promiscuous VLAN
1240  * filter that needs to be removed.
1241  **/
1242 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1243 {
1244         struct i40e_aqc_remove_macvlan_element_data element;
1245         struct i40e_pf *pf = vsi->back;
1246         i40e_status aq_ret;
1247
1248         /* Only appropriate for the PF main VSI */
1249         if (vsi->type != I40E_VSI_MAIN)
1250                 return -EINVAL;
1251
1252         memset(&element, 0, sizeof(element));
1253         ether_addr_copy(element.mac_addr, macaddr);
1254         element.vlan_tag = 0;
1255         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1256                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1257         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1258         if (aq_ret)
1259                 return -ENOENT;
1260
1261         return 0;
1262 }
1263
1264 /**
1265  * i40e_add_filter - Add a mac/vlan filter to the VSI
1266  * @vsi: the VSI to be searched
1267  * @macaddr: the MAC address
1268  * @vlan: the vlan
1269  * @is_vf: make sure its a VF filter, else doesn't matter
1270  * @is_netdev: make sure its a netdev filter, else doesn't matter
1271  *
1272  * Returns ptr to the filter object or NULL when no memory available.
1273  **/
1274 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1275                                         u8 *macaddr, s16 vlan,
1276                                         bool is_vf, bool is_netdev)
1277 {
1278         struct i40e_mac_filter *f;
1279
1280         if (!vsi || !macaddr)
1281                 return NULL;
1282
1283         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1284         if (!f) {
1285                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1286                 if (!f)
1287                         goto add_filter_out;
1288
1289                 ether_addr_copy(f->macaddr, macaddr);
1290                 f->vlan = vlan;
1291                 f->changed = true;
1292
1293                 INIT_LIST_HEAD(&f->list);
1294                 list_add(&f->list, &vsi->mac_filter_list);
1295         }
1296
1297         /* increment counter and add a new flag if needed */
1298         if (is_vf) {
1299                 if (!f->is_vf) {
1300                         f->is_vf = true;
1301                         f->counter++;
1302                 }
1303         } else if (is_netdev) {
1304                 if (!f->is_netdev) {
1305                         f->is_netdev = true;
1306                         f->counter++;
1307                 }
1308         } else {
1309                 f->counter++;
1310         }
1311
1312         /* changed tells sync_filters_subtask to
1313          * push the filter down to the firmware
1314          */
1315         if (f->changed) {
1316                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1317                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1318         }
1319
1320 add_filter_out:
1321         return f;
1322 }
1323
1324 /**
1325  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1326  * @vsi: the VSI to be searched
1327  * @macaddr: the MAC address
1328  * @vlan: the vlan
1329  * @is_vf: make sure it's a VF filter, else doesn't matter
1330  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1331  **/
1332 void i40e_del_filter(struct i40e_vsi *vsi,
1333                      u8 *macaddr, s16 vlan,
1334                      bool is_vf, bool is_netdev)
1335 {
1336         struct i40e_mac_filter *f;
1337
1338         if (!vsi || !macaddr)
1339                 return;
1340
1341         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1342         if (!f || f->counter == 0)
1343                 return;
1344
1345         if (is_vf) {
1346                 if (f->is_vf) {
1347                         f->is_vf = false;
1348                         f->counter--;
1349                 }
1350         } else if (is_netdev) {
1351                 if (f->is_netdev) {
1352                         f->is_netdev = false;
1353                         f->counter--;
1354                 }
1355         } else {
1356                 /* make sure we don't remove a filter in use by VF or netdev */
1357                 int min_f = 0;
1358                 min_f += (f->is_vf ? 1 : 0);
1359                 min_f += (f->is_netdev ? 1 : 0);
1360
1361                 if (f->counter > min_f)
1362                         f->counter--;
1363         }
1364
1365         /* counter == 0 tells sync_filters_subtask to
1366          * remove the filter from the firmware's list
1367          */
1368         if (f->counter == 0) {
1369                 f->changed = true;
1370                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1371                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1372         }
1373 }
1374
1375 /**
1376  * i40e_set_mac - NDO callback to set mac address
1377  * @netdev: network interface device structure
1378  * @p: pointer to an address structure
1379  *
1380  * Returns 0 on success, negative on failure
1381  **/
1382 #ifdef I40E_FCOE
1383 int i40e_set_mac(struct net_device *netdev, void *p)
1384 #else
1385 static int i40e_set_mac(struct net_device *netdev, void *p)
1386 #endif
1387 {
1388         struct i40e_netdev_priv *np = netdev_priv(netdev);
1389         struct i40e_vsi *vsi = np->vsi;
1390         struct i40e_pf *pf = vsi->back;
1391         struct i40e_hw *hw = &pf->hw;
1392         struct sockaddr *addr = p;
1393         struct i40e_mac_filter *f;
1394
1395         if (!is_valid_ether_addr(addr->sa_data))
1396                 return -EADDRNOTAVAIL;
1397
1398         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1399                 netdev_info(netdev, "already using mac address %pM\n",
1400                             addr->sa_data);
1401                 return 0;
1402         }
1403
1404         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1405             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1406                 return -EADDRNOTAVAIL;
1407
1408         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1409                 netdev_info(netdev, "returning to hw mac address %pM\n",
1410                             hw->mac.addr);
1411         else
1412                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1413
1414         if (vsi->type == I40E_VSI_MAIN) {
1415                 i40e_status ret;
1416                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1417                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1418                                                 addr->sa_data, NULL);
1419                 if (ret) {
1420                         netdev_info(netdev,
1421                                     "Addr change for Main VSI failed: %d\n",
1422                                     ret);
1423                         return -EADDRNOTAVAIL;
1424                 }
1425         }
1426
1427         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1428                 struct i40e_aqc_remove_macvlan_element_data element;
1429
1430                 memset(&element, 0, sizeof(element));
1431                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1432                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1433                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1434         } else {
1435                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1436                                 false, false);
1437         }
1438
1439         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1440                 struct i40e_aqc_add_macvlan_element_data element;
1441
1442                 memset(&element, 0, sizeof(element));
1443                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1444                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1445                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1446         } else {
1447                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1448                                     false, false);
1449                 if (f)
1450                         f->is_laa = true;
1451         }
1452
1453         i40e_sync_vsi_filters(vsi);
1454         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1455
1456         return 0;
1457 }
1458
1459 /**
1460  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1461  * @vsi: the VSI being setup
1462  * @ctxt: VSI context structure
1463  * @enabled_tc: Enabled TCs bitmap
1464  * @is_add: True if called before Add VSI
1465  *
1466  * Setup VSI queue mapping for enabled traffic classes.
1467  **/
1468 #ifdef I40E_FCOE
1469 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1470                               struct i40e_vsi_context *ctxt,
1471                               u8 enabled_tc,
1472                               bool is_add)
1473 #else
1474 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1475                                      struct i40e_vsi_context *ctxt,
1476                                      u8 enabled_tc,
1477                                      bool is_add)
1478 #endif
1479 {
1480         struct i40e_pf *pf = vsi->back;
1481         u16 sections = 0;
1482         u8 netdev_tc = 0;
1483         u16 numtc = 0;
1484         u16 qcount;
1485         u8 offset;
1486         u16 qmap;
1487         int i;
1488         u16 num_tc_qps = 0;
1489
1490         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1491         offset = 0;
1492
1493         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1494                 /* Find numtc from enabled TC bitmap */
1495                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1496                         if (enabled_tc & (1 << i)) /* TC is enabled */
1497                                 numtc++;
1498                 }
1499                 if (!numtc) {
1500                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1501                         numtc = 1;
1502                 }
1503         } else {
1504                 /* At least TC0 is enabled in case of non-DCB case */
1505                 numtc = 1;
1506         }
1507
1508         vsi->tc_config.numtc = numtc;
1509         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1510         /* Number of queues per enabled TC */
1511         /* In MFP case we can have a much lower count of MSIx
1512          * vectors available and so we need to lower the used
1513          * q count.
1514          */
1515         qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1516         num_tc_qps = qcount / numtc;
1517         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1518
1519         /* Setup queue offset/count for all TCs for given VSI */
1520         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1521                 /* See if the given TC is enabled for the given VSI */
1522                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1523                         int pow, num_qps;
1524
1525                         switch (vsi->type) {
1526                         case I40E_VSI_MAIN:
1527                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1528                                 break;
1529 #ifdef I40E_FCOE
1530                         case I40E_VSI_FCOE:
1531                                 qcount = num_tc_qps;
1532                                 break;
1533 #endif
1534                         case I40E_VSI_FDIR:
1535                         case I40E_VSI_SRIOV:
1536                         case I40E_VSI_VMDQ2:
1537                         default:
1538                                 qcount = num_tc_qps;
1539                                 WARN_ON(i != 0);
1540                                 break;
1541                         }
1542                         vsi->tc_config.tc_info[i].qoffset = offset;
1543                         vsi->tc_config.tc_info[i].qcount = qcount;
1544
1545                         /* find the next higher power-of-2 of num queue pairs */
1546                         num_qps = qcount;
1547                         pow = 0;
1548                         while (num_qps && ((1 << pow) < qcount)) {
1549                                 pow++;
1550                                 num_qps >>= 1;
1551                         }
1552
1553                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1554                         qmap =
1555                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1556                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1557
1558                         offset += qcount;
1559                 } else {
1560                         /* TC is not enabled so set the offset to
1561                          * default queue and allocate one queue
1562                          * for the given TC.
1563                          */
1564                         vsi->tc_config.tc_info[i].qoffset = 0;
1565                         vsi->tc_config.tc_info[i].qcount = 1;
1566                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1567
1568                         qmap = 0;
1569                 }
1570                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1571         }
1572
1573         /* Set actual Tx/Rx queue pairs */
1574         vsi->num_queue_pairs = offset;
1575         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1576                 if (vsi->req_queue_pairs > 0)
1577                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1578                 else
1579                         vsi->num_queue_pairs = pf->num_lan_msix;
1580         }
1581
1582         /* Scheduler section valid can only be set for ADD VSI */
1583         if (is_add) {
1584                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1585
1586                 ctxt->info.up_enable_bits = enabled_tc;
1587         }
1588         if (vsi->type == I40E_VSI_SRIOV) {
1589                 ctxt->info.mapping_flags |=
1590                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1591                 for (i = 0; i < vsi->num_queue_pairs; i++)
1592                         ctxt->info.queue_mapping[i] =
1593                                                cpu_to_le16(vsi->base_queue + i);
1594         } else {
1595                 ctxt->info.mapping_flags |=
1596                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1597                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1598         }
1599         ctxt->info.valid_sections |= cpu_to_le16(sections);
1600 }
1601
1602 /**
1603  * i40e_set_rx_mode - NDO callback to set the netdev filters
1604  * @netdev: network interface device structure
1605  **/
1606 #ifdef I40E_FCOE
1607 void i40e_set_rx_mode(struct net_device *netdev)
1608 #else
1609 static void i40e_set_rx_mode(struct net_device *netdev)
1610 #endif
1611 {
1612         struct i40e_netdev_priv *np = netdev_priv(netdev);
1613         struct i40e_mac_filter *f, *ftmp;
1614         struct i40e_vsi *vsi = np->vsi;
1615         struct netdev_hw_addr *uca;
1616         struct netdev_hw_addr *mca;
1617         struct netdev_hw_addr *ha;
1618
1619         /* add addr if not already in the filter list */
1620         netdev_for_each_uc_addr(uca, netdev) {
1621                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1622                         if (i40e_is_vsi_in_vlan(vsi))
1623                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1624                                                      false, true);
1625                         else
1626                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1627                                                 false, true);
1628                 }
1629         }
1630
1631         netdev_for_each_mc_addr(mca, netdev) {
1632                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1633                         if (i40e_is_vsi_in_vlan(vsi))
1634                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1635                                                      false, true);
1636                         else
1637                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1638                                                 false, true);
1639                 }
1640         }
1641
1642         /* remove filter if not in netdev list */
1643         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1644                 bool found = false;
1645
1646                 if (!f->is_netdev)
1647                         continue;
1648
1649                 if (is_multicast_ether_addr(f->macaddr)) {
1650                         netdev_for_each_mc_addr(mca, netdev) {
1651                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1652                                         found = true;
1653                                         break;
1654                                 }
1655                         }
1656                 } else {
1657                         netdev_for_each_uc_addr(uca, netdev) {
1658                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1659                                         found = true;
1660                                         break;
1661                                 }
1662                         }
1663
1664                         for_each_dev_addr(netdev, ha) {
1665                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1666                                         found = true;
1667                                         break;
1668                                 }
1669                         }
1670                 }
1671                 if (!found)
1672                         i40e_del_filter(
1673                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1674         }
1675
1676         /* check for other flag changes */
1677         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1678                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1679                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1680         }
1681 }
1682
1683 /**
1684  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1685  * @vsi: ptr to the VSI
1686  *
1687  * Push any outstanding VSI filter changes through the AdminQ.
1688  *
1689  * Returns 0 or error value
1690  **/
1691 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1692 {
1693         struct i40e_mac_filter *f, *ftmp;
1694         bool promisc_forced_on = false;
1695         bool add_happened = false;
1696         int filter_list_len = 0;
1697         u32 changed_flags = 0;
1698         i40e_status aq_ret = 0;
1699         struct i40e_pf *pf;
1700         int num_add = 0;
1701         int num_del = 0;
1702         u16 cmd_flags;
1703
1704         /* empty array typed pointers, kcalloc later */
1705         struct i40e_aqc_add_macvlan_element_data *add_list;
1706         struct i40e_aqc_remove_macvlan_element_data *del_list;
1707
1708         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1709                 usleep_range(1000, 2000);
1710         pf = vsi->back;
1711
1712         if (vsi->netdev) {
1713                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1714                 vsi->current_netdev_flags = vsi->netdev->flags;
1715         }
1716
1717         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1718                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1719
1720                 filter_list_len = pf->hw.aq.asq_buf_size /
1721                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1722                 del_list = kcalloc(filter_list_len,
1723                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1724                             GFP_KERNEL);
1725                 if (!del_list)
1726                         return -ENOMEM;
1727
1728                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1729                         if (!f->changed)
1730                                 continue;
1731
1732                         if (f->counter != 0)
1733                                 continue;
1734                         f->changed = false;
1735                         cmd_flags = 0;
1736
1737                         /* add to delete list */
1738                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1739                         del_list[num_del].vlan_tag =
1740                                 cpu_to_le16((u16)(f->vlan ==
1741                                             I40E_VLAN_ANY ? 0 : f->vlan));
1742
1743                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1744                         del_list[num_del].flags = cmd_flags;
1745                         num_del++;
1746
1747                         /* unlink from filter list */
1748                         list_del(&f->list);
1749                         kfree(f);
1750
1751                         /* flush a full buffer */
1752                         if (num_del == filter_list_len) {
1753                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1754                                             vsi->seid, del_list, num_del,
1755                                             NULL);
1756                                 num_del = 0;
1757                                 memset(del_list, 0, sizeof(*del_list));
1758
1759                                 if (aq_ret &&
1760                                     pf->hw.aq.asq_last_status !=
1761                                                               I40E_AQ_RC_ENOENT)
1762                                         dev_info(&pf->pdev->dev,
1763                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1764                                                  aq_ret,
1765                                                  pf->hw.aq.asq_last_status);
1766                         }
1767                 }
1768                 if (num_del) {
1769                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1770                                                      del_list, num_del, NULL);
1771                         num_del = 0;
1772
1773                         if (aq_ret &&
1774                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1775                                 dev_info(&pf->pdev->dev,
1776                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1777                                          aq_ret, pf->hw.aq.asq_last_status);
1778                 }
1779
1780                 kfree(del_list);
1781                 del_list = NULL;
1782
1783                 /* do all the adds now */
1784                 filter_list_len = pf->hw.aq.asq_buf_size /
1785                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1786                 add_list = kcalloc(filter_list_len,
1787                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1788                                GFP_KERNEL);
1789                 if (!add_list)
1790                         return -ENOMEM;
1791
1792                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1793                         if (!f->changed)
1794                                 continue;
1795
1796                         if (f->counter == 0)
1797                                 continue;
1798                         f->changed = false;
1799                         add_happened = true;
1800                         cmd_flags = 0;
1801
1802                         /* add to add array */
1803                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1804                         add_list[num_add].vlan_tag =
1805                                 cpu_to_le16(
1806                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1807                         add_list[num_add].queue_number = 0;
1808
1809                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1810                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1811                         num_add++;
1812
1813                         /* flush a full buffer */
1814                         if (num_add == filter_list_len) {
1815                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1816                                                              add_list, num_add,
1817                                                              NULL);
1818                                 num_add = 0;
1819
1820                                 if (aq_ret)
1821                                         break;
1822                                 memset(add_list, 0, sizeof(*add_list));
1823                         }
1824                 }
1825                 if (num_add) {
1826                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1827                                                      add_list, num_add, NULL);
1828                         num_add = 0;
1829                 }
1830                 kfree(add_list);
1831                 add_list = NULL;
1832
1833                 if (add_happened && aq_ret &&
1834                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1835                         dev_info(&pf->pdev->dev,
1836                                  "add filter failed, err %d, aq_err %d\n",
1837                                  aq_ret, pf->hw.aq.asq_last_status);
1838                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1839                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1840                                       &vsi->state)) {
1841                                 promisc_forced_on = true;
1842                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1843                                         &vsi->state);
1844                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1845                         }
1846                 }
1847         }
1848
1849         /* check for changes in promiscuous modes */
1850         if (changed_flags & IFF_ALLMULTI) {
1851                 bool cur_multipromisc;
1852                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1853                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1854                                                                vsi->seid,
1855                                                                cur_multipromisc,
1856                                                                NULL);
1857                 if (aq_ret)
1858                         dev_info(&pf->pdev->dev,
1859                                  "set multi promisc failed, err %d, aq_err %d\n",
1860                                  aq_ret, pf->hw.aq.asq_last_status);
1861         }
1862         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1863                 bool cur_promisc;
1864                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1865                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1866                                         &vsi->state));
1867                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1868                                                              vsi->seid,
1869                                                              cur_promisc, NULL);
1870                 if (aq_ret)
1871                         dev_info(&pf->pdev->dev,
1872                                  "set uni promisc failed, err %d, aq_err %d\n",
1873                                  aq_ret, pf->hw.aq.asq_last_status);
1874                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1875                                                    vsi->seid,
1876                                                    cur_promisc, NULL);
1877                 if (aq_ret)
1878                         dev_info(&pf->pdev->dev,
1879                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1880                                  aq_ret, pf->hw.aq.asq_last_status);
1881         }
1882
1883         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1884         return 0;
1885 }
1886
1887 /**
1888  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1889  * @pf: board private structure
1890  **/
1891 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1892 {
1893         int v;
1894
1895         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1896                 return;
1897         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1898
1899         for (v = 0; v < pf->num_alloc_vsi; v++) {
1900                 if (pf->vsi[v] &&
1901                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1902                         i40e_sync_vsi_filters(pf->vsi[v]);
1903         }
1904 }
1905
1906 /**
1907  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1908  * @netdev: network interface device structure
1909  * @new_mtu: new value for maximum frame size
1910  *
1911  * Returns 0 on success, negative on failure
1912  **/
1913 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1914 {
1915         struct i40e_netdev_priv *np = netdev_priv(netdev);
1916         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1917         struct i40e_vsi *vsi = np->vsi;
1918
1919         /* MTU < 68 is an error and causes problems on some kernels */
1920         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1921                 return -EINVAL;
1922
1923         netdev_info(netdev, "changing MTU from %d to %d\n",
1924                     netdev->mtu, new_mtu);
1925         netdev->mtu = new_mtu;
1926         if (netif_running(netdev))
1927                 i40e_vsi_reinit_locked(vsi);
1928
1929         return 0;
1930 }
1931
1932 /**
1933  * i40e_ioctl - Access the hwtstamp interface
1934  * @netdev: network interface device structure
1935  * @ifr: interface request data
1936  * @cmd: ioctl command
1937  **/
1938 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1939 {
1940         struct i40e_netdev_priv *np = netdev_priv(netdev);
1941         struct i40e_pf *pf = np->vsi->back;
1942
1943         switch (cmd) {
1944         case SIOCGHWTSTAMP:
1945                 return i40e_ptp_get_ts_config(pf, ifr);
1946         case SIOCSHWTSTAMP:
1947                 return i40e_ptp_set_ts_config(pf, ifr);
1948         default:
1949                 return -EOPNOTSUPP;
1950         }
1951 }
1952
1953 /**
1954  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1955  * @vsi: the vsi being adjusted
1956  **/
1957 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1958 {
1959         struct i40e_vsi_context ctxt;
1960         i40e_status ret;
1961
1962         if ((vsi->info.valid_sections &
1963              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1964             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1965                 return;  /* already enabled */
1966
1967         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1968         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1969                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1970
1971         ctxt.seid = vsi->seid;
1972         ctxt.info = vsi->info;
1973         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1974         if (ret) {
1975                 dev_info(&vsi->back->pdev->dev,
1976                          "%s: update vsi failed, aq_err=%d\n",
1977                          __func__, vsi->back->hw.aq.asq_last_status);
1978         }
1979 }
1980
1981 /**
1982  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1983  * @vsi: the vsi being adjusted
1984  **/
1985 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1986 {
1987         struct i40e_vsi_context ctxt;
1988         i40e_status ret;
1989
1990         if ((vsi->info.valid_sections &
1991              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1992             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1993              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1994                 return;  /* already disabled */
1995
1996         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1997         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1998                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1999
2000         ctxt.seid = vsi->seid;
2001         ctxt.info = vsi->info;
2002         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2003         if (ret) {
2004                 dev_info(&vsi->back->pdev->dev,
2005                          "%s: update vsi failed, aq_err=%d\n",
2006                          __func__, vsi->back->hw.aq.asq_last_status);
2007         }
2008 }
2009
2010 /**
2011  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2012  * @netdev: network interface to be adjusted
2013  * @features: netdev features to test if VLAN offload is enabled or not
2014  **/
2015 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2016 {
2017         struct i40e_netdev_priv *np = netdev_priv(netdev);
2018         struct i40e_vsi *vsi = np->vsi;
2019
2020         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2021                 i40e_vlan_stripping_enable(vsi);
2022         else
2023                 i40e_vlan_stripping_disable(vsi);
2024 }
2025
2026 /**
2027  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2028  * @vsi: the vsi being configured
2029  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2030  **/
2031 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2032 {
2033         struct i40e_mac_filter *f, *add_f;
2034         bool is_netdev, is_vf;
2035
2036         is_vf = (vsi->type == I40E_VSI_SRIOV);
2037         is_netdev = !!(vsi->netdev);
2038
2039         if (is_netdev) {
2040                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2041                                         is_vf, is_netdev);
2042                 if (!add_f) {
2043                         dev_info(&vsi->back->pdev->dev,
2044                                  "Could not add vlan filter %d for %pM\n",
2045                                  vid, vsi->netdev->dev_addr);
2046                         return -ENOMEM;
2047                 }
2048         }
2049
2050         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2051                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2052                 if (!add_f) {
2053                         dev_info(&vsi->back->pdev->dev,
2054                                  "Could not add vlan filter %d for %pM\n",
2055                                  vid, f->macaddr);
2056                         return -ENOMEM;
2057                 }
2058         }
2059
2060         /* Now if we add a vlan tag, make sure to check if it is the first
2061          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2062          * with 0, so we now accept untagged and specified tagged traffic
2063          * (and not any taged and untagged)
2064          */
2065         if (vid > 0) {
2066                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2067                                                   I40E_VLAN_ANY,
2068                                                   is_vf, is_netdev)) {
2069                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2070                                         I40E_VLAN_ANY, is_vf, is_netdev);
2071                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2072                                                 is_vf, is_netdev);
2073                         if (!add_f) {
2074                                 dev_info(&vsi->back->pdev->dev,
2075                                          "Could not add filter 0 for %pM\n",
2076                                          vsi->netdev->dev_addr);
2077                                 return -ENOMEM;
2078                         }
2079                 }
2080         }
2081
2082         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2083         if (vid > 0 && !vsi->info.pvid) {
2084                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2085                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2086                                              is_vf, is_netdev)) {
2087                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2088                                                 is_vf, is_netdev);
2089                                 add_f = i40e_add_filter(vsi, f->macaddr,
2090                                                         0, is_vf, is_netdev);
2091                                 if (!add_f) {
2092                                         dev_info(&vsi->back->pdev->dev,
2093                                                  "Could not add filter 0 for %pM\n",
2094                                                  f->macaddr);
2095                                         return -ENOMEM;
2096                                 }
2097                         }
2098                 }
2099         }
2100
2101         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2102             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2103                 return 0;
2104
2105         return i40e_sync_vsi_filters(vsi);
2106 }
2107
2108 /**
2109  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2110  * @vsi: the vsi being configured
2111  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2112  *
2113  * Return: 0 on success or negative otherwise
2114  **/
2115 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2116 {
2117         struct net_device *netdev = vsi->netdev;
2118         struct i40e_mac_filter *f, *add_f;
2119         bool is_vf, is_netdev;
2120         int filter_count = 0;
2121
2122         is_vf = (vsi->type == I40E_VSI_SRIOV);
2123         is_netdev = !!(netdev);
2124
2125         if (is_netdev)
2126                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2127
2128         list_for_each_entry(f, &vsi->mac_filter_list, list)
2129                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2130
2131         /* go through all the filters for this VSI and if there is only
2132          * vid == 0 it means there are no other filters, so vid 0 must
2133          * be replaced with -1. This signifies that we should from now
2134          * on accept any traffic (with any tag present, or untagged)
2135          */
2136         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2137                 if (is_netdev) {
2138                         if (f->vlan &&
2139                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2140                                 filter_count++;
2141                 }
2142
2143                 if (f->vlan)
2144                         filter_count++;
2145         }
2146
2147         if (!filter_count && is_netdev) {
2148                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2149                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2150                                     is_vf, is_netdev);
2151                 if (!f) {
2152                         dev_info(&vsi->back->pdev->dev,
2153                                  "Could not add filter %d for %pM\n",
2154                                  I40E_VLAN_ANY, netdev->dev_addr);
2155                         return -ENOMEM;
2156                 }
2157         }
2158
2159         if (!filter_count) {
2160                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2161                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2162                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2163                                             is_vf, is_netdev);
2164                         if (!add_f) {
2165                                 dev_info(&vsi->back->pdev->dev,
2166                                          "Could not add filter %d for %pM\n",
2167                                          I40E_VLAN_ANY, f->macaddr);
2168                                 return -ENOMEM;
2169                         }
2170                 }
2171         }
2172
2173         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2174             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2175                 return 0;
2176
2177         return i40e_sync_vsi_filters(vsi);
2178 }
2179
2180 /**
2181  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2182  * @netdev: network interface to be adjusted
2183  * @vid: vlan id to be added
2184  *
2185  * net_device_ops implementation for adding vlan ids
2186  **/
2187 #ifdef I40E_FCOE
2188 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2189                          __always_unused __be16 proto, u16 vid)
2190 #else
2191 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2192                                 __always_unused __be16 proto, u16 vid)
2193 #endif
2194 {
2195         struct i40e_netdev_priv *np = netdev_priv(netdev);
2196         struct i40e_vsi *vsi = np->vsi;
2197         int ret = 0;
2198
2199         if (vid > 4095)
2200                 return -EINVAL;
2201
2202         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2203
2204         /* If the network stack called us with vid = 0 then
2205          * it is asking to receive priority tagged packets with
2206          * vlan id 0.  Our HW receives them by default when configured
2207          * to receive untagged packets so there is no need to add an
2208          * extra filter for vlan 0 tagged packets.
2209          */
2210         if (vid)
2211                 ret = i40e_vsi_add_vlan(vsi, vid);
2212
2213         if (!ret && (vid < VLAN_N_VID))
2214                 set_bit(vid, vsi->active_vlans);
2215
2216         return ret;
2217 }
2218
2219 /**
2220  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2221  * @netdev: network interface to be adjusted
2222  * @vid: vlan id to be removed
2223  *
2224  * net_device_ops implementation for removing vlan ids
2225  **/
2226 #ifdef I40E_FCOE
2227 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2228                           __always_unused __be16 proto, u16 vid)
2229 #else
2230 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2231                                  __always_unused __be16 proto, u16 vid)
2232 #endif
2233 {
2234         struct i40e_netdev_priv *np = netdev_priv(netdev);
2235         struct i40e_vsi *vsi = np->vsi;
2236
2237         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2238
2239         /* return code is ignored as there is nothing a user
2240          * can do about failure to remove and a log message was
2241          * already printed from the other function
2242          */
2243         i40e_vsi_kill_vlan(vsi, vid);
2244
2245         clear_bit(vid, vsi->active_vlans);
2246
2247         return 0;
2248 }
2249
2250 /**
2251  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2252  * @vsi: the vsi being brought back up
2253  **/
2254 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2255 {
2256         u16 vid;
2257
2258         if (!vsi->netdev)
2259                 return;
2260
2261         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2262
2263         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2264                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2265                                      vid);
2266 }
2267
2268 /**
2269  * i40e_vsi_add_pvid - Add pvid for the VSI
2270  * @vsi: the vsi being adjusted
2271  * @vid: the vlan id to set as a PVID
2272  **/
2273 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2274 {
2275         struct i40e_vsi_context ctxt;
2276         i40e_status aq_ret;
2277
2278         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2279         vsi->info.pvid = cpu_to_le16(vid);
2280         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2281                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2282                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2283
2284         ctxt.seid = vsi->seid;
2285         ctxt.info = vsi->info;
2286         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2287         if (aq_ret) {
2288                 dev_info(&vsi->back->pdev->dev,
2289                          "%s: update vsi failed, aq_err=%d\n",
2290                          __func__, vsi->back->hw.aq.asq_last_status);
2291                 return -ENOENT;
2292         }
2293
2294         return 0;
2295 }
2296
2297 /**
2298  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2299  * @vsi: the vsi being adjusted
2300  *
2301  * Just use the vlan_rx_register() service to put it back to normal
2302  **/
2303 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2304 {
2305         i40e_vlan_stripping_disable(vsi);
2306
2307         vsi->info.pvid = 0;
2308 }
2309
2310 /**
2311  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2312  * @vsi: ptr to the VSI
2313  *
2314  * If this function returns with an error, then it's possible one or
2315  * more of the rings is populated (while the rest are not).  It is the
2316  * callers duty to clean those orphaned rings.
2317  *
2318  * Return 0 on success, negative on failure
2319  **/
2320 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2321 {
2322         int i, err = 0;
2323
2324         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2325                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2326
2327         return err;
2328 }
2329
2330 /**
2331  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2332  * @vsi: ptr to the VSI
2333  *
2334  * Free VSI's transmit software resources
2335  **/
2336 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2337 {
2338         int i;
2339
2340         if (!vsi->tx_rings)
2341                 return;
2342
2343         for (i = 0; i < vsi->num_queue_pairs; i++)
2344                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2345                         i40e_free_tx_resources(vsi->tx_rings[i]);
2346 }
2347
2348 /**
2349  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2350  * @vsi: ptr to the VSI
2351  *
2352  * If this function returns with an error, then it's possible one or
2353  * more of the rings is populated (while the rest are not).  It is the
2354  * callers duty to clean those orphaned rings.
2355  *
2356  * Return 0 on success, negative on failure
2357  **/
2358 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2359 {
2360         int i, err = 0;
2361
2362         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2363                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2364 #ifdef I40E_FCOE
2365         i40e_fcoe_setup_ddp_resources(vsi);
2366 #endif
2367         return err;
2368 }
2369
2370 /**
2371  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2372  * @vsi: ptr to the VSI
2373  *
2374  * Free all receive software resources
2375  **/
2376 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2377 {
2378         int i;
2379
2380         if (!vsi->rx_rings)
2381                 return;
2382
2383         for (i = 0; i < vsi->num_queue_pairs; i++)
2384                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2385                         i40e_free_rx_resources(vsi->rx_rings[i]);
2386 #ifdef I40E_FCOE
2387         i40e_fcoe_free_ddp_resources(vsi);
2388 #endif
2389 }
2390
2391 /**
2392  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2393  * @ring: The Tx ring to configure
2394  *
2395  * This enables/disables XPS for a given Tx descriptor ring
2396  * based on the TCs enabled for the VSI that ring belongs to.
2397  **/
2398 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2399 {
2400         struct i40e_vsi *vsi = ring->vsi;
2401         cpumask_var_t mask;
2402
2403         if (!ring->q_vector || !ring->netdev)
2404                 return;
2405
2406         /* Single TC mode enable XPS */
2407         if (vsi->tc_config.numtc <= 1) {
2408                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2409                         netif_set_xps_queue(ring->netdev,
2410                                             &ring->q_vector->affinity_mask,
2411                                             ring->queue_index);
2412         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2413                 /* Disable XPS to allow selection based on TC */
2414                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2415                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2416                 free_cpumask_var(mask);
2417         }
2418 }
2419
2420 /**
2421  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2422  * @ring: The Tx ring to configure
2423  *
2424  * Configure the Tx descriptor ring in the HMC context.
2425  **/
2426 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2427 {
2428         struct i40e_vsi *vsi = ring->vsi;
2429         u16 pf_q = vsi->base_queue + ring->queue_index;
2430         struct i40e_hw *hw = &vsi->back->hw;
2431         struct i40e_hmc_obj_txq tx_ctx;
2432         i40e_status err = 0;
2433         u32 qtx_ctl = 0;
2434
2435         /* some ATR related tx ring init */
2436         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2437                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2438                 ring->atr_count = 0;
2439         } else {
2440                 ring->atr_sample_rate = 0;
2441         }
2442
2443         /* configure XPS */
2444         i40e_config_xps_tx_ring(ring);
2445
2446         /* clear the context structure first */
2447         memset(&tx_ctx, 0, sizeof(tx_ctx));
2448
2449         tx_ctx.new_context = 1;
2450         tx_ctx.base = (ring->dma / 128);
2451         tx_ctx.qlen = ring->count;
2452         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2453                                                I40E_FLAG_FD_ATR_ENABLED));
2454 #ifdef I40E_FCOE
2455         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2456 #endif
2457         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2458         /* FDIR VSI tx ring can still use RS bit and writebacks */
2459         if (vsi->type != I40E_VSI_FDIR)
2460                 tx_ctx.head_wb_ena = 1;
2461         tx_ctx.head_wb_addr = ring->dma +
2462                               (ring->count * sizeof(struct i40e_tx_desc));
2463
2464         /* As part of VSI creation/update, FW allocates certain
2465          * Tx arbitration queue sets for each TC enabled for
2466          * the VSI. The FW returns the handles to these queue
2467          * sets as part of the response buffer to Add VSI,
2468          * Update VSI, etc. AQ commands. It is expected that
2469          * these queue set handles be associated with the Tx
2470          * queues by the driver as part of the TX queue context
2471          * initialization. This has to be done regardless of
2472          * DCB as by default everything is mapped to TC0.
2473          */
2474         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2475         tx_ctx.rdylist_act = 0;
2476
2477         /* clear the context in the HMC */
2478         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2479         if (err) {
2480                 dev_info(&vsi->back->pdev->dev,
2481                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2482                          ring->queue_index, pf_q, err);
2483                 return -ENOMEM;
2484         }
2485
2486         /* set the context in the HMC */
2487         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2488         if (err) {
2489                 dev_info(&vsi->back->pdev->dev,
2490                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2491                          ring->queue_index, pf_q, err);
2492                 return -ENOMEM;
2493         }
2494
2495         /* Now associate this queue with this PCI function */
2496         if (vsi->type == I40E_VSI_VMDQ2) {
2497                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2498                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2499                            I40E_QTX_CTL_VFVM_INDX_MASK;
2500         } else {
2501                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2502         }
2503
2504         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2505                     I40E_QTX_CTL_PF_INDX_MASK);
2506         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2507         i40e_flush(hw);
2508
2509         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2510
2511         /* cache tail off for easier writes later */
2512         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2513
2514         return 0;
2515 }
2516
2517 /**
2518  * i40e_configure_rx_ring - Configure a receive ring context
2519  * @ring: The Rx ring to configure
2520  *
2521  * Configure the Rx descriptor ring in the HMC context.
2522  **/
2523 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2524 {
2525         struct i40e_vsi *vsi = ring->vsi;
2526         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2527         u16 pf_q = vsi->base_queue + ring->queue_index;
2528         struct i40e_hw *hw = &vsi->back->hw;
2529         struct i40e_hmc_obj_rxq rx_ctx;
2530         i40e_status err = 0;
2531
2532         ring->state = 0;
2533
2534         /* clear the context structure first */
2535         memset(&rx_ctx, 0, sizeof(rx_ctx));
2536
2537         ring->rx_buf_len = vsi->rx_buf_len;
2538         ring->rx_hdr_len = vsi->rx_hdr_len;
2539
2540         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2541         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2542
2543         rx_ctx.base = (ring->dma / 128);
2544         rx_ctx.qlen = ring->count;
2545
2546         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2547                 set_ring_16byte_desc_enabled(ring);
2548                 rx_ctx.dsize = 0;
2549         } else {
2550                 rx_ctx.dsize = 1;
2551         }
2552
2553         rx_ctx.dtype = vsi->dtype;
2554         if (vsi->dtype) {
2555                 set_ring_ps_enabled(ring);
2556                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2557                                   I40E_RX_SPLIT_IP      |
2558                                   I40E_RX_SPLIT_TCP_UDP |
2559                                   I40E_RX_SPLIT_SCTP;
2560         } else {
2561                 rx_ctx.hsplit_0 = 0;
2562         }
2563
2564         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2565                                   (chain_len * ring->rx_buf_len));
2566         if (hw->revision_id == 0)
2567                 rx_ctx.lrxqthresh = 0;
2568         else
2569                 rx_ctx.lrxqthresh = 2;
2570         rx_ctx.crcstrip = 1;
2571         rx_ctx.l2tsel = 1;
2572         rx_ctx.showiv = 1;
2573 #ifdef I40E_FCOE
2574         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2575 #endif
2576         /* set the prefena field to 1 because the manual says to */
2577         rx_ctx.prefena = 1;
2578
2579         /* clear the context in the HMC */
2580         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2581         if (err) {
2582                 dev_info(&vsi->back->pdev->dev,
2583                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2584                          ring->queue_index, pf_q, err);
2585                 return -ENOMEM;
2586         }
2587
2588         /* set the context in the HMC */
2589         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2590         if (err) {
2591                 dev_info(&vsi->back->pdev->dev,
2592                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2593                          ring->queue_index, pf_q, err);
2594                 return -ENOMEM;
2595         }
2596
2597         /* cache tail for quicker writes, and clear the reg before use */
2598         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2599         writel(0, ring->tail);
2600
2601         if (ring_is_ps_enabled(ring)) {
2602                 i40e_alloc_rx_headers(ring);
2603                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2604         } else {
2605                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2606         }
2607
2608         return 0;
2609 }
2610
2611 /**
2612  * i40e_vsi_configure_tx - Configure the VSI for Tx
2613  * @vsi: VSI structure describing this set of rings and resources
2614  *
2615  * Configure the Tx VSI for operation.
2616  **/
2617 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2618 {
2619         int err = 0;
2620         u16 i;
2621
2622         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2623                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2624
2625         return err;
2626 }
2627
2628 /**
2629  * i40e_vsi_configure_rx - Configure the VSI for Rx
2630  * @vsi: the VSI being configured
2631  *
2632  * Configure the Rx VSI for operation.
2633  **/
2634 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2635 {
2636         int err = 0;
2637         u16 i;
2638
2639         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2640                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2641                                + ETH_FCS_LEN + VLAN_HLEN;
2642         else
2643                 vsi->max_frame = I40E_RXBUFFER_2048;
2644
2645         /* figure out correct receive buffer length */
2646         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2647                                     I40E_FLAG_RX_PS_ENABLED)) {
2648         case I40E_FLAG_RX_1BUF_ENABLED:
2649                 vsi->rx_hdr_len = 0;
2650                 vsi->rx_buf_len = vsi->max_frame;
2651                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2652                 break;
2653         case I40E_FLAG_RX_PS_ENABLED:
2654                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2655                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2656                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2657                 break;
2658         default:
2659                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2660                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2661                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2662                 break;
2663         }
2664
2665 #ifdef I40E_FCOE
2666         /* setup rx buffer for FCoE */
2667         if ((vsi->type == I40E_VSI_FCOE) &&
2668             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2669                 vsi->rx_hdr_len = 0;
2670                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2671                 vsi->max_frame = I40E_RXBUFFER_3072;
2672                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2673         }
2674
2675 #endif /* I40E_FCOE */
2676         /* round up for the chip's needs */
2677         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2678                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2679         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2680                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2681
2682         /* set up individual rings */
2683         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2684                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2685
2686         return err;
2687 }
2688
2689 /**
2690  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2691  * @vsi: ptr to the VSI
2692  **/
2693 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2694 {
2695         struct i40e_ring *tx_ring, *rx_ring;
2696         u16 qoffset, qcount;
2697         int i, n;
2698
2699         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2700                 /* Reset the TC information */
2701                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2702                         rx_ring = vsi->rx_rings[i];
2703                         tx_ring = vsi->tx_rings[i];
2704                         rx_ring->dcb_tc = 0;
2705                         tx_ring->dcb_tc = 0;
2706                 }
2707         }
2708
2709         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2710                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2711                         continue;
2712
2713                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2714                 qcount = vsi->tc_config.tc_info[n].qcount;
2715                 for (i = qoffset; i < (qoffset + qcount); i++) {
2716                         rx_ring = vsi->rx_rings[i];
2717                         tx_ring = vsi->tx_rings[i];
2718                         rx_ring->dcb_tc = n;
2719                         tx_ring->dcb_tc = n;
2720                 }
2721         }
2722 }
2723
2724 /**
2725  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2726  * @vsi: ptr to the VSI
2727  **/
2728 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2729 {
2730         if (vsi->netdev)
2731                 i40e_set_rx_mode(vsi->netdev);
2732 }
2733
2734 /**
2735  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2736  * @vsi: Pointer to the targeted VSI
2737  *
2738  * This function replays the hlist on the hw where all the SB Flow Director
2739  * filters were saved.
2740  **/
2741 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2742 {
2743         struct i40e_fdir_filter *filter;
2744         struct i40e_pf *pf = vsi->back;
2745         struct hlist_node *node;
2746
2747         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2748                 return;
2749
2750         hlist_for_each_entry_safe(filter, node,
2751                                   &pf->fdir_filter_list, fdir_node) {
2752                 i40e_add_del_fdir(vsi, filter, true);
2753         }
2754 }
2755
2756 /**
2757  * i40e_vsi_configure - Set up the VSI for action
2758  * @vsi: the VSI being configured
2759  **/
2760 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2761 {
2762         int err;
2763
2764         i40e_set_vsi_rx_mode(vsi);
2765         i40e_restore_vlan(vsi);
2766         i40e_vsi_config_dcb_rings(vsi);
2767         err = i40e_vsi_configure_tx(vsi);
2768         if (!err)
2769                 err = i40e_vsi_configure_rx(vsi);
2770
2771         return err;
2772 }
2773
2774 /**
2775  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2776  * @vsi: the VSI being configured
2777  **/
2778 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2779 {
2780         struct i40e_pf *pf = vsi->back;
2781         struct i40e_q_vector *q_vector;
2782         struct i40e_hw *hw = &pf->hw;
2783         u16 vector;
2784         int i, q;
2785         u32 val;
2786         u32 qp;
2787
2788         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2789          * and PFINT_LNKLSTn registers, e.g.:
2790          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2791          */
2792         qp = vsi->base_queue;
2793         vector = vsi->base_vector;
2794         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2795                 q_vector = vsi->q_vectors[i];
2796                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2797                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2798                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2799                      q_vector->rx.itr);
2800                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2801                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2802                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2803                      q_vector->tx.itr);
2804
2805                 /* Linked list for the queuepairs assigned to this vector */
2806                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2807                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2808                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2809                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2810                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2811                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2812                               (I40E_QUEUE_TYPE_TX
2813                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2814
2815                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2816
2817                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2818                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2819                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2820                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2821                               (I40E_QUEUE_TYPE_RX
2822                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2823
2824                         /* Terminate the linked list */
2825                         if (q == (q_vector->num_ringpairs - 1))
2826                                 val |= (I40E_QUEUE_END_OF_LIST
2827                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2828
2829                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2830                         qp++;
2831                 }
2832         }
2833
2834         i40e_flush(hw);
2835 }
2836
2837 /**
2838  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2839  * @hw: ptr to the hardware info
2840  **/
2841 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2842 {
2843         struct i40e_hw *hw = &pf->hw;
2844         u32 val;
2845
2846         /* clear things first */
2847         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2848         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2849
2850         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2851               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2852               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2853               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2854               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2855               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2856               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2857               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2858
2859         if (pf->flags & I40E_FLAG_PTP)
2860                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2861
2862         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2863
2864         /* SW_ITR_IDX = 0, but don't change INTENA */
2865         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2866                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2867
2868         /* OTHER_ITR_IDX = 0 */
2869         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2870 }
2871
2872 /**
2873  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2874  * @vsi: the VSI being configured
2875  **/
2876 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2877 {
2878         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2879         struct i40e_pf *pf = vsi->back;
2880         struct i40e_hw *hw = &pf->hw;
2881         u32 val;
2882
2883         /* set the ITR configuration */
2884         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2885         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2886         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2887         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2888         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2889         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2890
2891         i40e_enable_misc_int_causes(pf);
2892
2893         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2894         wr32(hw, I40E_PFINT_LNKLST0, 0);
2895
2896         /* Associate the queue pair to the vector and enable the queue int */
2897         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2898               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2899               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2900
2901         wr32(hw, I40E_QINT_RQCTL(0), val);
2902
2903         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2904               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2905               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2906
2907         wr32(hw, I40E_QINT_TQCTL(0), val);
2908         i40e_flush(hw);
2909 }
2910
2911 /**
2912  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2913  * @pf: board private structure
2914  **/
2915 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2916 {
2917         struct i40e_hw *hw = &pf->hw;
2918
2919         wr32(hw, I40E_PFINT_DYN_CTL0,
2920              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2921         i40e_flush(hw);
2922 }
2923
2924 /**
2925  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2926  * @pf: board private structure
2927  **/
2928 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2929 {
2930         struct i40e_hw *hw = &pf->hw;
2931         u32 val;
2932
2933         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2934               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2935               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2936
2937         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2938         i40e_flush(hw);
2939 }
2940
2941 /**
2942  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2943  * @vsi: pointer to a vsi
2944  * @vector: enable a particular Hw Interrupt vector
2945  **/
2946 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2947 {
2948         struct i40e_pf *pf = vsi->back;
2949         struct i40e_hw *hw = &pf->hw;
2950         u32 val;
2951
2952         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2953               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2954               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2955         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2956         /* skip the flush */
2957 }
2958
2959 /**
2960  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2961  * @vsi: pointer to a vsi
2962  * @vector: disable a particular Hw Interrupt vector
2963  **/
2964 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2965 {
2966         struct i40e_pf *pf = vsi->back;
2967         struct i40e_hw *hw = &pf->hw;
2968         u32 val;
2969
2970         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2971         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2972         i40e_flush(hw);
2973 }
2974
2975 /**
2976  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2977  * @irq: interrupt number
2978  * @data: pointer to a q_vector
2979  **/
2980 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2981 {
2982         struct i40e_q_vector *q_vector = data;
2983
2984         if (!q_vector->tx.ring && !q_vector->rx.ring)
2985                 return IRQ_HANDLED;
2986
2987         napi_schedule(&q_vector->napi);
2988
2989         return IRQ_HANDLED;
2990 }
2991
2992 /**
2993  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2994  * @vsi: the VSI being configured
2995  * @basename: name for the vector
2996  *
2997  * Allocates MSI-X vectors and requests interrupts from the kernel.
2998  **/
2999 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3000 {
3001         int q_vectors = vsi->num_q_vectors;
3002         struct i40e_pf *pf = vsi->back;
3003         int base = vsi->base_vector;
3004         int rx_int_idx = 0;
3005         int tx_int_idx = 0;
3006         int vector, err;
3007
3008         for (vector = 0; vector < q_vectors; vector++) {
3009                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3010
3011                 if (q_vector->tx.ring && q_vector->rx.ring) {
3012                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3013                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3014                         tx_int_idx++;
3015                 } else if (q_vector->rx.ring) {
3016                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3017                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3018                 } else if (q_vector->tx.ring) {
3019                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3020                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3021                 } else {
3022                         /* skip this unused q_vector */
3023                         continue;
3024                 }
3025                 err = request_irq(pf->msix_entries[base + vector].vector,
3026                                   vsi->irq_handler,
3027                                   0,
3028                                   q_vector->name,
3029                                   q_vector);
3030                 if (err) {
3031                         dev_info(&pf->pdev->dev,
3032                                  "%s: request_irq failed, error: %d\n",
3033                                  __func__, err);
3034                         goto free_queue_irqs;
3035                 }
3036                 /* assign the mask for this irq */
3037                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3038                                       &q_vector->affinity_mask);
3039         }
3040
3041         vsi->irqs_ready = true;
3042         return 0;
3043
3044 free_queue_irqs:
3045         while (vector) {
3046                 vector--;
3047                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3048                                       NULL);
3049                 free_irq(pf->msix_entries[base + vector].vector,
3050                          &(vsi->q_vectors[vector]));
3051         }
3052         return err;
3053 }
3054
3055 /**
3056  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3057  * @vsi: the VSI being un-configured
3058  **/
3059 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3060 {
3061         struct i40e_pf *pf = vsi->back;
3062         struct i40e_hw *hw = &pf->hw;
3063         int base = vsi->base_vector;
3064         int i;
3065
3066         for (i = 0; i < vsi->num_queue_pairs; i++) {
3067                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3068                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3069         }
3070
3071         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3072                 for (i = vsi->base_vector;
3073                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3074                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3075
3076                 i40e_flush(hw);
3077                 for (i = 0; i < vsi->num_q_vectors; i++)
3078                         synchronize_irq(pf->msix_entries[i + base].vector);
3079         } else {
3080                 /* Legacy and MSI mode - this stops all interrupt handling */
3081                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3082                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3083                 i40e_flush(hw);
3084                 synchronize_irq(pf->pdev->irq);
3085         }
3086 }
3087
3088 /**
3089  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3090  * @vsi: the VSI being configured
3091  **/
3092 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3093 {
3094         struct i40e_pf *pf = vsi->back;
3095         int i;
3096
3097         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3098                 for (i = vsi->base_vector;
3099                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3100                         i40e_irq_dynamic_enable(vsi, i);
3101         } else {
3102                 i40e_irq_dynamic_enable_icr0(pf);
3103         }
3104
3105         i40e_flush(&pf->hw);
3106         return 0;
3107 }
3108
3109 /**
3110  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3111  * @pf: board private structure
3112  **/
3113 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3114 {
3115         /* Disable ICR 0 */
3116         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3117         i40e_flush(&pf->hw);
3118 }
3119
3120 /**
3121  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3122  * @irq: interrupt number
3123  * @data: pointer to a q_vector
3124  *
3125  * This is the handler used for all MSI/Legacy interrupts, and deals
3126  * with both queue and non-queue interrupts.  This is also used in
3127  * MSIX mode to handle the non-queue interrupts.
3128  **/
3129 static irqreturn_t i40e_intr(int irq, void *data)
3130 {
3131         struct i40e_pf *pf = (struct i40e_pf *)data;
3132         struct i40e_hw *hw = &pf->hw;
3133         irqreturn_t ret = IRQ_NONE;
3134         u32 icr0, icr0_remaining;
3135         u32 val, ena_mask;
3136
3137         icr0 = rd32(hw, I40E_PFINT_ICR0);
3138         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3139
3140         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3141         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3142                 goto enable_intr;
3143
3144         /* if interrupt but no bits showing, must be SWINT */
3145         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3146             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3147                 pf->sw_int_count++;
3148
3149         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3150         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3151
3152                 /* temporarily disable queue cause for NAPI processing */
3153                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3154                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3155                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3156
3157                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3158                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3159                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3160
3161                 if (!test_bit(__I40E_DOWN, &pf->state))
3162                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3163         }
3164
3165         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3166                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3167                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3168         }
3169
3170         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3171                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3172                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3173         }
3174
3175         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3176                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3177                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3178         }
3179
3180         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3181                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3182                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3183                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3184                 val = rd32(hw, I40E_GLGEN_RSTAT);
3185                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3186                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3187                 if (val == I40E_RESET_CORER) {
3188                         pf->corer_count++;
3189                 } else if (val == I40E_RESET_GLOBR) {
3190                         pf->globr_count++;
3191                 } else if (val == I40E_RESET_EMPR) {
3192                         pf->empr_count++;
3193                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3194                 }
3195         }
3196
3197         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3198                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3199                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3200                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3201                          rd32(hw, I40E_PFHMC_ERRORINFO),
3202                          rd32(hw, I40E_PFHMC_ERRORDATA));
3203         }
3204
3205         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3206                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3207
3208                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3209                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3210                         i40e_ptp_tx_hwtstamp(pf);
3211                 }
3212         }
3213
3214         /* If a critical error is pending we have no choice but to reset the
3215          * device.
3216          * Report and mask out any remaining unexpected interrupts.
3217          */
3218         icr0_remaining = icr0 & ena_mask;
3219         if (icr0_remaining) {
3220                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3221                          icr0_remaining);
3222                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3223                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3224                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3225                         dev_info(&pf->pdev->dev, "device will be reset\n");
3226                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3227                         i40e_service_event_schedule(pf);
3228                 }
3229                 ena_mask &= ~icr0_remaining;
3230         }
3231         ret = IRQ_HANDLED;
3232
3233 enable_intr:
3234         /* re-enable interrupt causes */
3235         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3236         if (!test_bit(__I40E_DOWN, &pf->state)) {
3237                 i40e_service_event_schedule(pf);
3238                 i40e_irq_dynamic_enable_icr0(pf);
3239         }
3240
3241         return ret;
3242 }
3243
3244 /**
3245  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3246  * @tx_ring:  tx ring to clean
3247  * @budget:   how many cleans we're allowed
3248  *
3249  * Returns true if there's any budget left (e.g. the clean is finished)
3250  **/
3251 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3252 {
3253         struct i40e_vsi *vsi = tx_ring->vsi;
3254         u16 i = tx_ring->next_to_clean;
3255         struct i40e_tx_buffer *tx_buf;
3256         struct i40e_tx_desc *tx_desc;
3257
3258         tx_buf = &tx_ring->tx_bi[i];
3259         tx_desc = I40E_TX_DESC(tx_ring, i);
3260         i -= tx_ring->count;
3261
3262         do {
3263                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3264
3265                 /* if next_to_watch is not set then there is no work pending */
3266                 if (!eop_desc)
3267                         break;
3268
3269                 /* prevent any other reads prior to eop_desc */
3270                 read_barrier_depends();
3271
3272                 /* if the descriptor isn't done, no work yet to do */
3273                 if (!(eop_desc->cmd_type_offset_bsz &
3274                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3275                         break;
3276
3277                 /* clear next_to_watch to prevent false hangs */
3278                 tx_buf->next_to_watch = NULL;
3279
3280                 tx_desc->buffer_addr = 0;
3281                 tx_desc->cmd_type_offset_bsz = 0;
3282                 /* move past filter desc */
3283                 tx_buf++;
3284                 tx_desc++;
3285                 i++;
3286                 if (unlikely(!i)) {
3287                         i -= tx_ring->count;
3288                         tx_buf = tx_ring->tx_bi;
3289                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3290                 }
3291                 /* unmap skb header data */
3292                 dma_unmap_single(tx_ring->dev,
3293                                  dma_unmap_addr(tx_buf, dma),
3294                                  dma_unmap_len(tx_buf, len),
3295                                  DMA_TO_DEVICE);
3296                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3297                         kfree(tx_buf->raw_buf);
3298
3299                 tx_buf->raw_buf = NULL;
3300                 tx_buf->tx_flags = 0;
3301                 tx_buf->next_to_watch = NULL;
3302                 dma_unmap_len_set(tx_buf, len, 0);
3303                 tx_desc->buffer_addr = 0;
3304                 tx_desc->cmd_type_offset_bsz = 0;
3305
3306                 /* move us past the eop_desc for start of next FD desc */
3307                 tx_buf++;
3308                 tx_desc++;
3309                 i++;
3310                 if (unlikely(!i)) {
3311                         i -= tx_ring->count;
3312                         tx_buf = tx_ring->tx_bi;
3313                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3314                 }
3315
3316                 /* update budget accounting */
3317                 budget--;
3318         } while (likely(budget));
3319
3320         i += tx_ring->count;
3321         tx_ring->next_to_clean = i;
3322
3323         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3324                 i40e_irq_dynamic_enable(vsi,
3325                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3326         }
3327         return budget > 0;
3328 }
3329
3330 /**
3331  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3332  * @irq: interrupt number
3333  * @data: pointer to a q_vector
3334  **/
3335 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3336 {
3337         struct i40e_q_vector *q_vector = data;
3338         struct i40e_vsi *vsi;
3339
3340         if (!q_vector->tx.ring)
3341                 return IRQ_HANDLED;
3342
3343         vsi = q_vector->tx.ring->vsi;
3344         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3345
3346         return IRQ_HANDLED;
3347 }
3348
3349 /**
3350  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3351  * @vsi: the VSI being configured
3352  * @v_idx: vector index
3353  * @qp_idx: queue pair index
3354  **/
3355 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3356 {
3357         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3358         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3359         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3360
3361         tx_ring->q_vector = q_vector;
3362         tx_ring->next = q_vector->tx.ring;
3363         q_vector->tx.ring = tx_ring;
3364         q_vector->tx.count++;
3365
3366         rx_ring->q_vector = q_vector;
3367         rx_ring->next = q_vector->rx.ring;
3368         q_vector->rx.ring = rx_ring;
3369         q_vector->rx.count++;
3370 }
3371
3372 /**
3373  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3374  * @vsi: the VSI being configured
3375  *
3376  * This function maps descriptor rings to the queue-specific vectors
3377  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3378  * one vector per queue pair, but on a constrained vector budget, we
3379  * group the queue pairs as "efficiently" as possible.
3380  **/
3381 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3382 {
3383         int qp_remaining = vsi->num_queue_pairs;
3384         int q_vectors = vsi->num_q_vectors;
3385         int num_ringpairs;
3386         int v_start = 0;
3387         int qp_idx = 0;
3388
3389         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3390          * group them so there are multiple queues per vector.
3391          * It is also important to go through all the vectors available to be
3392          * sure that if we don't use all the vectors, that the remaining vectors
3393          * are cleared. This is especially important when decreasing the
3394          * number of queues in use.
3395          */
3396         for (; v_start < q_vectors; v_start++) {
3397                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3398
3399                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3400
3401                 q_vector->num_ringpairs = num_ringpairs;
3402
3403                 q_vector->rx.count = 0;
3404                 q_vector->tx.count = 0;
3405                 q_vector->rx.ring = NULL;
3406                 q_vector->tx.ring = NULL;
3407
3408                 while (num_ringpairs--) {
3409                         map_vector_to_qp(vsi, v_start, qp_idx);
3410                         qp_idx++;
3411                         qp_remaining--;
3412                 }
3413         }
3414 }
3415
3416 /**
3417  * i40e_vsi_request_irq - Request IRQ from the OS
3418  * @vsi: the VSI being configured
3419  * @basename: name for the vector
3420  **/
3421 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3422 {
3423         struct i40e_pf *pf = vsi->back;
3424         int err;
3425
3426         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3427                 err = i40e_vsi_request_irq_msix(vsi, basename);
3428         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3429                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3430                                   pf->int_name, pf);
3431         else
3432                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3433                                   pf->int_name, pf);
3434
3435         if (err)
3436                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3437
3438         return err;
3439 }
3440
3441 #ifdef CONFIG_NET_POLL_CONTROLLER
3442 /**
3443  * i40e_netpoll - A Polling 'interrupt'handler
3444  * @netdev: network interface device structure
3445  *
3446  * This is used by netconsole to send skbs without having to re-enable
3447  * interrupts.  It's not called while the normal interrupt routine is executing.
3448  **/
3449 #ifdef I40E_FCOE
3450 void i40e_netpoll(struct net_device *netdev)
3451 #else
3452 static void i40e_netpoll(struct net_device *netdev)
3453 #endif
3454 {
3455         struct i40e_netdev_priv *np = netdev_priv(netdev);
3456         struct i40e_vsi *vsi = np->vsi;
3457         struct i40e_pf *pf = vsi->back;
3458         int i;
3459
3460         /* if interface is down do nothing */
3461         if (test_bit(__I40E_DOWN, &vsi->state))
3462                 return;
3463
3464         pf->flags |= I40E_FLAG_IN_NETPOLL;
3465         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3466                 for (i = 0; i < vsi->num_q_vectors; i++)
3467                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3468         } else {
3469                 i40e_intr(pf->pdev->irq, netdev);
3470         }
3471         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3472 }
3473 #endif
3474
3475 /**
3476  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3477  * @pf: the PF being configured
3478  * @pf_q: the PF queue
3479  * @enable: enable or disable state of the queue
3480  *
3481  * This routine will wait for the given Tx queue of the PF to reach the
3482  * enabled or disabled state.
3483  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3484  * multiple retries; else will return 0 in case of success.
3485  **/
3486 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3487 {
3488         int i;
3489         u32 tx_reg;
3490
3491         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3492                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3493                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3494                         break;
3495
3496                 usleep_range(10, 20);
3497         }
3498         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3499                 return -ETIMEDOUT;
3500
3501         return 0;
3502 }
3503
3504 /**
3505  * i40e_vsi_control_tx - Start or stop a VSI's rings
3506  * @vsi: the VSI being configured
3507  * @enable: start or stop the rings
3508  **/
3509 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3510 {
3511         struct i40e_pf *pf = vsi->back;
3512         struct i40e_hw *hw = &pf->hw;
3513         int i, j, pf_q, ret = 0;
3514         u32 tx_reg;
3515
3516         pf_q = vsi->base_queue;
3517         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3518
3519                 /* warn the TX unit of coming changes */
3520                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3521                 if (!enable)
3522                         usleep_range(10, 20);
3523
3524                 for (j = 0; j < 50; j++) {
3525                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3526                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3527                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3528                                 break;
3529                         usleep_range(1000, 2000);
3530                 }
3531                 /* Skip if the queue is already in the requested state */
3532                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3533                         continue;
3534
3535                 /* turn on/off the queue */
3536                 if (enable) {
3537                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3538                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3539                 } else {
3540                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3541                 }
3542
3543                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3544                 /* No waiting for the Tx queue to disable */
3545                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3546                         continue;
3547
3548                 /* wait for the change to finish */
3549                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3550                 if (ret) {
3551                         dev_info(&pf->pdev->dev,
3552                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3553                                  __func__, vsi->seid, pf_q,
3554                                  (enable ? "en" : "dis"));
3555                         break;
3556                 }
3557         }
3558
3559         if (hw->revision_id == 0)
3560                 mdelay(50);
3561         return ret;
3562 }
3563
3564 /**
3565  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3566  * @pf: the PF being configured
3567  * @pf_q: the PF queue
3568  * @enable: enable or disable state of the queue
3569  *
3570  * This routine will wait for the given Rx queue of the PF to reach the
3571  * enabled or disabled state.
3572  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3573  * multiple retries; else will return 0 in case of success.
3574  **/
3575 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3576 {
3577         int i;
3578         u32 rx_reg;
3579
3580         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3581                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3582                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3583                         break;
3584
3585                 usleep_range(10, 20);
3586         }
3587         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3588                 return -ETIMEDOUT;
3589
3590         return 0;
3591 }
3592
3593 /**
3594  * i40e_vsi_control_rx - Start or stop a VSI's rings
3595  * @vsi: the VSI being configured
3596  * @enable: start or stop the rings
3597  **/
3598 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3599 {
3600         struct i40e_pf *pf = vsi->back;
3601         struct i40e_hw *hw = &pf->hw;
3602         int i, j, pf_q, ret = 0;
3603         u32 rx_reg;
3604
3605         pf_q = vsi->base_queue;
3606         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3607                 for (j = 0; j < 50; j++) {
3608                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3609                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3610                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3611                                 break;
3612                         usleep_range(1000, 2000);
3613                 }
3614
3615                 /* Skip if the queue is already in the requested state */
3616                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3617                         continue;
3618
3619                 /* turn on/off the queue */
3620                 if (enable)
3621                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3622                 else
3623                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3624                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3625
3626                 /* wait for the change to finish */
3627                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3628                 if (ret) {
3629                         dev_info(&pf->pdev->dev,
3630                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3631                                  __func__, vsi->seid, pf_q,
3632                                  (enable ? "en" : "dis"));
3633                         break;
3634                 }
3635         }
3636
3637         return ret;
3638 }
3639
3640 /**
3641  * i40e_vsi_control_rings - Start or stop a VSI's rings
3642  * @vsi: the VSI being configured
3643  * @enable: start or stop the rings
3644  **/
3645 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3646 {
3647         int ret = 0;
3648
3649         /* do rx first for enable and last for disable */
3650         if (request) {
3651                 ret = i40e_vsi_control_rx(vsi, request);
3652                 if (ret)
3653                         return ret;
3654                 ret = i40e_vsi_control_tx(vsi, request);
3655         } else {
3656                 /* Ignore return value, we need to shutdown whatever we can */
3657                 i40e_vsi_control_tx(vsi, request);
3658                 i40e_vsi_control_rx(vsi, request);
3659         }
3660
3661         return ret;
3662 }
3663
3664 /**
3665  * i40e_vsi_free_irq - Free the irq association with the OS
3666  * @vsi: the VSI being configured
3667  **/
3668 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3669 {
3670         struct i40e_pf *pf = vsi->back;
3671         struct i40e_hw *hw = &pf->hw;
3672         int base = vsi->base_vector;
3673         u32 val, qp;
3674         int i;
3675
3676         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3677                 if (!vsi->q_vectors)
3678                         return;
3679
3680                 if (!vsi->irqs_ready)
3681                         return;
3682
3683                 vsi->irqs_ready = false;
3684                 for (i = 0; i < vsi->num_q_vectors; i++) {
3685                         u16 vector = i + base;
3686
3687                         /* free only the irqs that were actually requested */
3688                         if (!vsi->q_vectors[i] ||
3689                             !vsi->q_vectors[i]->num_ringpairs)
3690                                 continue;
3691
3692                         /* clear the affinity_mask in the IRQ descriptor */
3693                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3694                                               NULL);
3695                         free_irq(pf->msix_entries[vector].vector,
3696                                  vsi->q_vectors[i]);
3697
3698                         /* Tear down the interrupt queue link list
3699                          *
3700                          * We know that they come in pairs and always
3701                          * the Rx first, then the Tx.  To clear the
3702                          * link list, stick the EOL value into the
3703                          * next_q field of the registers.
3704                          */
3705                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3706                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3707                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3708                         val |= I40E_QUEUE_END_OF_LIST
3709                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3710                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3711
3712                         while (qp != I40E_QUEUE_END_OF_LIST) {
3713                                 u32 next;
3714
3715                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3716
3717                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3718                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3719                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3720                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3721
3722                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3723                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3724
3725                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3726
3727                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3728
3729                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3730                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3731
3732                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3733                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3734                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3735                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3736
3737                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3738                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3739
3740                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3741                                 qp = next;
3742                         }
3743                 }
3744         } else {
3745                 free_irq(pf->pdev->irq, pf);
3746
3747                 val = rd32(hw, I40E_PFINT_LNKLST0);
3748                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3749                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3750                 val |= I40E_QUEUE_END_OF_LIST
3751                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3752                 wr32(hw, I40E_PFINT_LNKLST0, val);
3753
3754                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3755                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3756                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3757                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3758                          I40E_QINT_RQCTL_INTEVENT_MASK);
3759
3760                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3761                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3762
3763                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3764
3765                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3766
3767                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3768                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3769                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3770                          I40E_QINT_TQCTL_INTEVENT_MASK);
3771
3772                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3773                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3774
3775                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3776         }
3777 }
3778
3779 /**
3780  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3781  * @vsi: the VSI being configured
3782  * @v_idx: Index of vector to be freed
3783  *
3784  * This function frees the memory allocated to the q_vector.  In addition if
3785  * NAPI is enabled it will delete any references to the NAPI struct prior
3786  * to freeing the q_vector.
3787  **/
3788 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3789 {
3790         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3791         struct i40e_ring *ring;
3792
3793         if (!q_vector)
3794                 return;
3795
3796         /* disassociate q_vector from rings */
3797         i40e_for_each_ring(ring, q_vector->tx)
3798                 ring->q_vector = NULL;
3799
3800         i40e_for_each_ring(ring, q_vector->rx)
3801                 ring->q_vector = NULL;
3802
3803         /* only VSI w/ an associated netdev is set up w/ NAPI */
3804         if (vsi->netdev)
3805                 netif_napi_del(&q_vector->napi);
3806
3807         vsi->q_vectors[v_idx] = NULL;
3808
3809         kfree_rcu(q_vector, rcu);
3810 }
3811
3812 /**
3813  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3814  * @vsi: the VSI being un-configured
3815  *
3816  * This frees the memory allocated to the q_vectors and
3817  * deletes references to the NAPI struct.
3818  **/
3819 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3820 {
3821         int v_idx;
3822
3823         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3824                 i40e_free_q_vector(vsi, v_idx);
3825 }
3826
3827 /**
3828  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3829  * @pf: board private structure
3830  **/
3831 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3832 {
3833         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3834         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3835                 pci_disable_msix(pf->pdev);
3836                 kfree(pf->msix_entries);
3837                 pf->msix_entries = NULL;
3838                 kfree(pf->irq_pile);
3839                 pf->irq_pile = NULL;
3840         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3841                 pci_disable_msi(pf->pdev);
3842         }
3843         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3844 }
3845
3846 /**
3847  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3848  * @pf: board private structure
3849  *
3850  * We go through and clear interrupt specific resources and reset the structure
3851  * to pre-load conditions
3852  **/
3853 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3854 {
3855         int i;
3856
3857         i40e_stop_misc_vector(pf);
3858         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3859                 synchronize_irq(pf->msix_entries[0].vector);
3860                 free_irq(pf->msix_entries[0].vector, pf);
3861         }
3862
3863         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3864         for (i = 0; i < pf->num_alloc_vsi; i++)
3865                 if (pf->vsi[i])
3866                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3867         i40e_reset_interrupt_capability(pf);
3868 }
3869
3870 /**
3871  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3872  * @vsi: the VSI being configured
3873  **/
3874 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3875 {
3876         int q_idx;
3877
3878         if (!vsi->netdev)
3879                 return;
3880
3881         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3882                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3883 }
3884
3885 /**
3886  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3887  * @vsi: the VSI being configured
3888  **/
3889 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3890 {
3891         int q_idx;
3892
3893         if (!vsi->netdev)
3894                 return;
3895
3896         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3897                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3898 }
3899
3900 /**
3901  * i40e_vsi_close - Shut down a VSI
3902  * @vsi: the vsi to be quelled
3903  **/
3904 static void i40e_vsi_close(struct i40e_vsi *vsi)
3905 {
3906         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3907                 i40e_down(vsi);
3908         i40e_vsi_free_irq(vsi);
3909         i40e_vsi_free_tx_resources(vsi);
3910         i40e_vsi_free_rx_resources(vsi);
3911 }
3912
3913 /**
3914  * i40e_quiesce_vsi - Pause a given VSI
3915  * @vsi: the VSI being paused
3916  **/
3917 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3918 {
3919         if (test_bit(__I40E_DOWN, &vsi->state))
3920                 return;
3921
3922         /* No need to disable FCoE VSI when Tx suspended */
3923         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3924             vsi->type == I40E_VSI_FCOE) {
3925                 dev_dbg(&vsi->back->pdev->dev,
3926                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3927                          __func__, vsi->seid);
3928                 return;
3929         }
3930
3931         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3932         if (vsi->netdev && netif_running(vsi->netdev)) {
3933                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3934         } else {
3935                 i40e_vsi_close(vsi);
3936         }
3937 }
3938
3939 /**
3940  * i40e_unquiesce_vsi - Resume a given VSI
3941  * @vsi: the VSI being resumed
3942  **/
3943 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3944 {
3945         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3946                 return;
3947
3948         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3949         if (vsi->netdev && netif_running(vsi->netdev))
3950                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3951         else
3952                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3953 }
3954
3955 /**
3956  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3957  * @pf: the PF
3958  **/
3959 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3960 {
3961         int v;
3962
3963         for (v = 0; v < pf->num_alloc_vsi; v++) {
3964                 if (pf->vsi[v])
3965                         i40e_quiesce_vsi(pf->vsi[v]);
3966         }
3967 }
3968
3969 /**
3970  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3971  * @pf: the PF
3972  **/
3973 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3974 {
3975         int v;
3976
3977         for (v = 0; v < pf->num_alloc_vsi; v++) {
3978                 if (pf->vsi[v])
3979                         i40e_unquiesce_vsi(pf->vsi[v]);
3980         }
3981 }
3982
3983 #ifdef CONFIG_I40E_DCB
3984 /**
3985  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3986  * @vsi: the VSI being configured
3987  *
3988  * This function waits for the given VSI's Tx queues to be disabled.
3989  **/
3990 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3991 {
3992         struct i40e_pf *pf = vsi->back;
3993         int i, pf_q, ret;
3994
3995         pf_q = vsi->base_queue;
3996         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3997                 /* Check and wait for the disable status of the queue */
3998                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3999                 if (ret) {
4000                         dev_info(&pf->pdev->dev,
4001                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4002                                  __func__, vsi->seid, pf_q);
4003                         return ret;
4004                 }
4005         }
4006
4007         return 0;
4008 }
4009
4010 /**
4011  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4012  * @pf: the PF
4013  *
4014  * This function waits for the Tx queues to be in disabled state for all the
4015  * VSIs that are managed by this PF.
4016  **/
4017 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4018 {
4019         int v, ret = 0;
4020
4021         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4022                 /* No need to wait for FCoE VSI queues */
4023                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4024                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4025                         if (ret)
4026                                 break;
4027                 }
4028         }
4029
4030         return ret;
4031 }
4032
4033 #endif
4034 /**
4035  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4036  * @pf: pointer to PF
4037  *
4038  * Get TC map for ISCSI PF type that will include iSCSI TC
4039  * and LAN TC.
4040  **/
4041 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4042 {
4043         struct i40e_dcb_app_priority_table app;
4044         struct i40e_hw *hw = &pf->hw;
4045         u8 enabled_tc = 1; /* TC0 is always enabled */
4046         u8 tc, i;
4047         /* Get the iSCSI APP TLV */
4048         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4049
4050         for (i = 0; i < dcbcfg->numapps; i++) {
4051                 app = dcbcfg->app[i];
4052                 if (app.selector == I40E_APP_SEL_TCPIP &&
4053                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4054                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4055                         enabled_tc |= (1 << tc);
4056                         break;
4057                 }
4058         }
4059
4060         return enabled_tc;
4061 }
4062
4063 /**
4064  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4065  * @dcbcfg: the corresponding DCBx configuration structure
4066  *
4067  * Return the number of TCs from given DCBx configuration
4068  **/
4069 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4070 {
4071         u8 num_tc = 0;
4072         int i;
4073
4074         /* Scan the ETS Config Priority Table to find
4075          * traffic class enabled for a given priority
4076          * and use the traffic class index to get the
4077          * number of traffic classes enabled
4078          */
4079         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4080                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4081                         num_tc = dcbcfg->etscfg.prioritytable[i];
4082         }
4083
4084         /* Traffic class index starts from zero so
4085          * increment to return the actual count
4086          */
4087         return num_tc + 1;
4088 }
4089
4090 /**
4091  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4092  * @dcbcfg: the corresponding DCBx configuration structure
4093  *
4094  * Query the current DCB configuration and return the number of
4095  * traffic classes enabled from the given DCBX config
4096  **/
4097 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4098 {
4099         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4100         u8 enabled_tc = 1;
4101         u8 i;
4102
4103         for (i = 0; i < num_tc; i++)
4104                 enabled_tc |= 1 << i;
4105
4106         return enabled_tc;
4107 }
4108
4109 /**
4110  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4111  * @pf: PF being queried
4112  *
4113  * Return number of traffic classes enabled for the given PF
4114  **/
4115 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4116 {
4117         struct i40e_hw *hw = &pf->hw;
4118         u8 i, enabled_tc;
4119         u8 num_tc = 0;
4120         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4121
4122         /* If DCB is not enabled then always in single TC */
4123         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4124                 return 1;
4125
4126         /* SFP mode will be enabled for all TCs on port */
4127         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4128                 return i40e_dcb_get_num_tc(dcbcfg);
4129
4130         /* MFP mode return count of enabled TCs for this PF */
4131         if (pf->hw.func_caps.iscsi)
4132                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4133         else
4134                 return 1; /* Only TC0 */
4135
4136         /* At least have TC0 */
4137         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4138         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4139                 if (enabled_tc & (1 << i))
4140                         num_tc++;
4141         }
4142         return num_tc;
4143 }
4144
4145 /**
4146  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4147  * @pf: PF being queried
4148  *
4149  * Return a bitmap for first enabled traffic class for this PF.
4150  **/
4151 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4152 {
4153         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4154         u8 i = 0;
4155
4156         if (!enabled_tc)
4157                 return 0x1; /* TC0 */
4158
4159         /* Find the first enabled TC */
4160         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4161                 if (enabled_tc & (1 << i))
4162                         break;
4163         }
4164
4165         return 1 << i;
4166 }
4167
4168 /**
4169  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4170  * @pf: PF being queried
4171  *
4172  * Return a bitmap for enabled traffic classes for this PF.
4173  **/
4174 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4175 {
4176         /* If DCB is not enabled for this PF then just return default TC */
4177         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4178                 return i40e_pf_get_default_tc(pf);
4179
4180         /* SFP mode we want PF to be enabled for all TCs */
4181         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4182                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4183
4184         /* MFP enabled and iSCSI PF type */
4185         if (pf->hw.func_caps.iscsi)
4186                 return i40e_get_iscsi_tc_map(pf);
4187         else
4188                 return i40e_pf_get_default_tc(pf);
4189 }
4190
4191 /**
4192  * i40e_vsi_get_bw_info - Query VSI BW Information
4193  * @vsi: the VSI being queried
4194  *
4195  * Returns 0 on success, negative value on failure
4196  **/
4197 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4198 {
4199         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4200         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4201         struct i40e_pf *pf = vsi->back;
4202         struct i40e_hw *hw = &pf->hw;
4203         i40e_status aq_ret;
4204         u32 tc_bw_max;
4205         int i;
4206
4207         /* Get the VSI level BW configuration */
4208         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4209         if (aq_ret) {
4210                 dev_info(&pf->pdev->dev,
4211                          "couldn't get PF vsi bw config, err %d, aq_err %d\n",
4212                          aq_ret, pf->hw.aq.asq_last_status);
4213                 return -EINVAL;
4214         }
4215
4216         /* Get the VSI level BW configuration per TC */
4217         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4218                                                   NULL);
4219         if (aq_ret) {
4220                 dev_info(&pf->pdev->dev,
4221                          "couldn't get PF vsi ets bw config, err %d, aq_err %d\n",
4222                          aq_ret, pf->hw.aq.asq_last_status);
4223                 return -EINVAL;
4224         }
4225
4226         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4227                 dev_info(&pf->pdev->dev,
4228                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4229                          bw_config.tc_valid_bits,
4230                          bw_ets_config.tc_valid_bits);
4231                 /* Still continuing */
4232         }
4233
4234         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4235         vsi->bw_max_quanta = bw_config.max_bw;
4236         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4237                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4238         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4239                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4240                 vsi->bw_ets_limit_credits[i] =
4241                                         le16_to_cpu(bw_ets_config.credits[i]);
4242                 /* 3 bits out of 4 for each TC */
4243                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4244         }
4245
4246         return 0;
4247 }
4248
4249 /**
4250  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4251  * @vsi: the VSI being configured
4252  * @enabled_tc: TC bitmap
4253  * @bw_credits: BW shared credits per TC
4254  *
4255  * Returns 0 on success, negative value on failure
4256  **/
4257 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4258                                        u8 *bw_share)
4259 {
4260         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4261         i40e_status aq_ret;
4262         int i;
4263
4264         bw_data.tc_valid_bits = enabled_tc;
4265         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4266                 bw_data.tc_bw_credits[i] = bw_share[i];
4267
4268         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4269                                           NULL);
4270         if (aq_ret) {
4271                 dev_info(&vsi->back->pdev->dev,
4272                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4273                          vsi->back->hw.aq.asq_last_status);
4274                 return -EINVAL;
4275         }
4276
4277         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4278                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4279
4280         return 0;
4281 }
4282
4283 /**
4284  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4285  * @vsi: the VSI being configured
4286  * @enabled_tc: TC map to be enabled
4287  *
4288  **/
4289 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4290 {
4291         struct net_device *netdev = vsi->netdev;
4292         struct i40e_pf *pf = vsi->back;
4293         struct i40e_hw *hw = &pf->hw;
4294         u8 netdev_tc = 0;
4295         int i;
4296         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4297
4298         if (!netdev)
4299                 return;
4300
4301         if (!enabled_tc) {
4302                 netdev_reset_tc(netdev);
4303                 return;
4304         }
4305
4306         /* Set up actual enabled TCs on the VSI */
4307         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4308                 return;
4309
4310         /* set per TC queues for the VSI */
4311         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4312                 /* Only set TC queues for enabled tcs
4313                  *
4314                  * e.g. For a VSI that has TC0 and TC3 enabled the
4315                  * enabled_tc bitmap would be 0x00001001; the driver
4316                  * will set the numtc for netdev as 2 that will be
4317                  * referenced by the netdev layer as TC 0 and 1.
4318                  */
4319                 if (vsi->tc_config.enabled_tc & (1 << i))
4320                         netdev_set_tc_queue(netdev,
4321                                         vsi->tc_config.tc_info[i].netdev_tc,
4322                                         vsi->tc_config.tc_info[i].qcount,
4323                                         vsi->tc_config.tc_info[i].qoffset);
4324         }
4325
4326         /* Assign UP2TC map for the VSI */
4327         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4328                 /* Get the actual TC# for the UP */
4329                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4330                 /* Get the mapped netdev TC# for the UP */
4331                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4332                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4333         }
4334 }
4335
4336 /**
4337  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4338  * @vsi: the VSI being configured
4339  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4340  **/
4341 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4342                                       struct i40e_vsi_context *ctxt)
4343 {
4344         /* copy just the sections touched not the entire info
4345          * since not all sections are valid as returned by
4346          * update vsi params
4347          */
4348         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4349         memcpy(&vsi->info.queue_mapping,
4350                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4351         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4352                sizeof(vsi->info.tc_mapping));
4353 }
4354
4355 /**
4356  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4357  * @vsi: VSI to be configured
4358  * @enabled_tc: TC bitmap
4359  *
4360  * This configures a particular VSI for TCs that are mapped to the
4361  * given TC bitmap. It uses default bandwidth share for TCs across
4362  * VSIs to configure TC for a particular VSI.
4363  *
4364  * NOTE:
4365  * It is expected that the VSI queues have been quisced before calling
4366  * this function.
4367  **/
4368 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4369 {
4370         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4371         struct i40e_vsi_context ctxt;
4372         int ret = 0;
4373         int i;
4374
4375         /* Check if enabled_tc is same as existing or new TCs */
4376         if (vsi->tc_config.enabled_tc == enabled_tc)
4377                 return ret;
4378
4379         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4380         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4381                 if (enabled_tc & (1 << i))
4382                         bw_share[i] = 1;
4383         }
4384
4385         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4386         if (ret) {
4387                 dev_info(&vsi->back->pdev->dev,
4388                          "Failed configuring TC map %d for VSI %d\n",
4389                          enabled_tc, vsi->seid);
4390                 goto out;
4391         }
4392
4393         /* Update Queue Pairs Mapping for currently enabled UPs */
4394         ctxt.seid = vsi->seid;
4395         ctxt.pf_num = vsi->back->hw.pf_id;
4396         ctxt.vf_num = 0;
4397         ctxt.uplink_seid = vsi->uplink_seid;
4398         ctxt.info = vsi->info;
4399         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4400
4401         /* Update the VSI after updating the VSI queue-mapping information */
4402         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4403         if (ret) {
4404                 dev_info(&vsi->back->pdev->dev,
4405                          "update vsi failed, aq_err=%d\n",
4406                          vsi->back->hw.aq.asq_last_status);
4407                 goto out;
4408         }
4409         /* update the local VSI info with updated queue map */
4410         i40e_vsi_update_queue_map(vsi, &ctxt);
4411         vsi->info.valid_sections = 0;
4412
4413         /* Update current VSI BW information */
4414         ret = i40e_vsi_get_bw_info(vsi);
4415         if (ret) {
4416                 dev_info(&vsi->back->pdev->dev,
4417                          "Failed updating vsi bw info, aq_err=%d\n",
4418                          vsi->back->hw.aq.asq_last_status);
4419                 goto out;
4420         }
4421
4422         /* Update the netdev TC setup */
4423         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4424 out:
4425         return ret;
4426 }
4427
4428 /**
4429  * i40e_veb_config_tc - Configure TCs for given VEB
4430  * @veb: given VEB
4431  * @enabled_tc: TC bitmap
4432  *
4433  * Configures given TC bitmap for VEB (switching) element
4434  **/
4435 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4436 {
4437         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4438         struct i40e_pf *pf = veb->pf;
4439         int ret = 0;
4440         int i;
4441
4442         /* No TCs or already enabled TCs just return */
4443         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4444                 return ret;
4445
4446         bw_data.tc_valid_bits = enabled_tc;
4447         /* bw_data.absolute_credits is not set (relative) */
4448
4449         /* Enable ETS TCs with equal BW Share for now */
4450         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4451                 if (enabled_tc & (1 << i))
4452                         bw_data.tc_bw_share_credits[i] = 1;
4453         }
4454
4455         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4456                                                    &bw_data, NULL);
4457         if (ret) {
4458                 dev_info(&pf->pdev->dev,
4459                          "veb bw config failed, aq_err=%d\n",
4460                          pf->hw.aq.asq_last_status);
4461                 goto out;
4462         }
4463
4464         /* Update the BW information */
4465         ret = i40e_veb_get_bw_info(veb);
4466         if (ret) {
4467                 dev_info(&pf->pdev->dev,
4468                          "Failed getting veb bw config, aq_err=%d\n",
4469                          pf->hw.aq.asq_last_status);
4470         }
4471
4472 out:
4473         return ret;
4474 }
4475
4476 #ifdef CONFIG_I40E_DCB
4477 /**
4478  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4479  * @pf: PF struct
4480  *
4481  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4482  * the caller would've quiesce all the VSIs before calling
4483  * this function
4484  **/
4485 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4486 {
4487         u8 tc_map = 0;
4488         int ret;
4489         u8 v;
4490
4491         /* Enable the TCs available on PF to all VEBs */
4492         tc_map = i40e_pf_get_tc_map(pf);
4493         for (v = 0; v < I40E_MAX_VEB; v++) {
4494                 if (!pf->veb[v])
4495                         continue;
4496                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4497                 if (ret) {
4498                         dev_info(&pf->pdev->dev,
4499                                  "Failed configuring TC for VEB seid=%d\n",
4500                                  pf->veb[v]->seid);
4501                         /* Will try to configure as many components */
4502                 }
4503         }
4504
4505         /* Update each VSI */
4506         for (v = 0; v < pf->num_alloc_vsi; v++) {
4507                 if (!pf->vsi[v])
4508                         continue;
4509
4510                 /* - Enable all TCs for the LAN VSI
4511 #ifdef I40E_FCOE
4512                  * - For FCoE VSI only enable the TC configured
4513                  *   as per the APP TLV
4514 #endif
4515                  * - For all others keep them at TC0 for now
4516                  */
4517                 if (v == pf->lan_vsi)
4518                         tc_map = i40e_pf_get_tc_map(pf);
4519                 else
4520                         tc_map = i40e_pf_get_default_tc(pf);
4521 #ifdef I40E_FCOE
4522                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4523                         tc_map = i40e_get_fcoe_tc_map(pf);
4524 #endif /* #ifdef I40E_FCOE */
4525
4526                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4527                 if (ret) {
4528                         dev_info(&pf->pdev->dev,
4529                                  "Failed configuring TC for VSI seid=%d\n",
4530                                  pf->vsi[v]->seid);
4531                         /* Will try to configure as many components */
4532                 } else {
4533                         /* Re-configure VSI vectors based on updated TC map */
4534                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4535                         if (pf->vsi[v]->netdev)
4536                                 i40e_dcbnl_set_all(pf->vsi[v]);
4537                 }
4538         }
4539 }
4540
4541 /**
4542  * i40e_resume_port_tx - Resume port Tx
4543  * @pf: PF struct
4544  *
4545  * Resume a port's Tx and issue a PF reset in case of failure to
4546  * resume.
4547  **/
4548 static int i40e_resume_port_tx(struct i40e_pf *pf)
4549 {
4550         struct i40e_hw *hw = &pf->hw;
4551         int ret;
4552
4553         ret = i40e_aq_resume_port_tx(hw, NULL);
4554         if (ret) {
4555                 dev_info(&pf->pdev->dev,
4556                          "AQ command Resume Port Tx failed = %d\n",
4557                           pf->hw.aq.asq_last_status);
4558                 /* Schedule PF reset to recover */
4559                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4560                 i40e_service_event_schedule(pf);
4561         }
4562
4563         return ret;
4564 }
4565
4566 /**
4567  * i40e_init_pf_dcb - Initialize DCB configuration
4568  * @pf: PF being configured
4569  *
4570  * Query the current DCB configuration and cache it
4571  * in the hardware structure
4572  **/
4573 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4574 {
4575         struct i40e_hw *hw = &pf->hw;
4576         int err = 0;
4577
4578         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4579         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4580             (pf->hw.aq.fw_maj_ver < 4))
4581                 goto out;
4582
4583         /* Get the initial DCB configuration */
4584         err = i40e_init_dcb(hw);
4585         if (!err) {
4586                 /* Device/Function is not DCBX capable */
4587                 if ((!hw->func_caps.dcb) ||
4588                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4589                         dev_info(&pf->pdev->dev,
4590                                  "DCBX offload is not supported or is disabled for this PF.\n");
4591
4592                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4593                                 goto out;
4594
4595                 } else {
4596                         /* When status is not DISABLED then DCBX in FW */
4597                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4598                                        DCB_CAP_DCBX_VER_IEEE;
4599
4600                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4601                         /* Enable DCB tagging only when more than one TC */
4602                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4603                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4604                         dev_dbg(&pf->pdev->dev,
4605                                 "DCBX offload is supported for this PF.\n");
4606                 }
4607         } else {
4608                 dev_info(&pf->pdev->dev,
4609                          "AQ Querying DCB configuration failed: aq_err %d\n",
4610                          pf->hw.aq.asq_last_status);
4611         }
4612
4613 out:
4614         return err;
4615 }
4616 #endif /* CONFIG_I40E_DCB */
4617 #define SPEED_SIZE 14
4618 #define FC_SIZE 8
4619 /**
4620  * i40e_print_link_message - print link up or down
4621  * @vsi: the VSI for which link needs a message
4622  */
4623 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4624 {
4625         char speed[SPEED_SIZE] = "Unknown";
4626         char fc[FC_SIZE] = "RX/TX";
4627
4628         if (!isup) {
4629                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4630                 return;
4631         }
4632
4633         /* Warn user if link speed on NPAR enabled partition is not at
4634          * least 10GB
4635          */
4636         if (vsi->back->hw.func_caps.npar_enable &&
4637             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4638              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4639                 netdev_warn(vsi->netdev,
4640                             "The partition detected link speed that is less than 10Gbps\n");
4641
4642         switch (vsi->back->hw.phy.link_info.link_speed) {
4643         case I40E_LINK_SPEED_40GB:
4644                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4645                 break;
4646         case I40E_LINK_SPEED_20GB:
4647                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4648                 break;
4649         case I40E_LINK_SPEED_10GB:
4650                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4651                 break;
4652         case I40E_LINK_SPEED_1GB:
4653                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4654                 break;
4655         case I40E_LINK_SPEED_100MB:
4656                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4657                 break;
4658         default:
4659                 break;
4660         }
4661
4662         switch (vsi->back->hw.fc.current_mode) {
4663         case I40E_FC_FULL:
4664                 strlcpy(fc, "RX/TX", FC_SIZE);
4665                 break;
4666         case I40E_FC_TX_PAUSE:
4667                 strlcpy(fc, "TX", FC_SIZE);
4668                 break;
4669         case I40E_FC_RX_PAUSE:
4670                 strlcpy(fc, "RX", FC_SIZE);
4671                 break;
4672         default:
4673                 strlcpy(fc, "None", FC_SIZE);
4674                 break;
4675         }
4676
4677         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4678                     speed, fc);
4679 }
4680
4681 /**
4682  * i40e_up_complete - Finish the last steps of bringing up a connection
4683  * @vsi: the VSI being configured
4684  **/
4685 static int i40e_up_complete(struct i40e_vsi *vsi)
4686 {
4687         struct i40e_pf *pf = vsi->back;
4688         int err;
4689
4690         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4691                 i40e_vsi_configure_msix(vsi);
4692         else
4693                 i40e_configure_msi_and_legacy(vsi);
4694
4695         /* start rings */
4696         err = i40e_vsi_control_rings(vsi, true);
4697         if (err)
4698                 return err;
4699
4700         clear_bit(__I40E_DOWN, &vsi->state);
4701         i40e_napi_enable_all(vsi);
4702         i40e_vsi_enable_irq(vsi);
4703
4704         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4705             (vsi->netdev)) {
4706                 i40e_print_link_message(vsi, true);
4707                 netif_tx_start_all_queues(vsi->netdev);
4708                 netif_carrier_on(vsi->netdev);
4709         } else if (vsi->netdev) {
4710                 i40e_print_link_message(vsi, false);
4711                 /* need to check for qualified module here*/
4712                 if ((pf->hw.phy.link_info.link_info &
4713                         I40E_AQ_MEDIA_AVAILABLE) &&
4714                     (!(pf->hw.phy.link_info.an_info &
4715                         I40E_AQ_QUALIFIED_MODULE)))
4716                         netdev_err(vsi->netdev,
4717                                    "the driver failed to link because an unqualified module was detected.");
4718         }
4719
4720         /* replay FDIR SB filters */
4721         if (vsi->type == I40E_VSI_FDIR) {
4722                 /* reset fd counters */
4723                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4724                 if (pf->fd_tcp_rule > 0) {
4725                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4726                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4727                         pf->fd_tcp_rule = 0;
4728                 }
4729                 i40e_fdir_filter_restore(vsi);
4730         }
4731         i40e_service_event_schedule(pf);
4732
4733         return 0;
4734 }
4735
4736 /**
4737  * i40e_vsi_reinit_locked - Reset the VSI
4738  * @vsi: the VSI being configured
4739  *
4740  * Rebuild the ring structs after some configuration
4741  * has changed, e.g. MTU size.
4742  **/
4743 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4744 {
4745         struct i40e_pf *pf = vsi->back;
4746
4747         WARN_ON(in_interrupt());
4748         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4749                 usleep_range(1000, 2000);
4750         i40e_down(vsi);
4751
4752         /* Give a VF some time to respond to the reset.  The
4753          * two second wait is based upon the watchdog cycle in
4754          * the VF driver.
4755          */
4756         if (vsi->type == I40E_VSI_SRIOV)
4757                 msleep(2000);
4758         i40e_up(vsi);
4759         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4760 }
4761
4762 /**
4763  * i40e_up - Bring the connection back up after being down
4764  * @vsi: the VSI being configured
4765  **/
4766 int i40e_up(struct i40e_vsi *vsi)
4767 {
4768         int err;
4769
4770         err = i40e_vsi_configure(vsi);
4771         if (!err)
4772                 err = i40e_up_complete(vsi);
4773
4774         return err;
4775 }
4776
4777 /**
4778  * i40e_down - Shutdown the connection processing
4779  * @vsi: the VSI being stopped
4780  **/
4781 void i40e_down(struct i40e_vsi *vsi)
4782 {
4783         int i;
4784
4785         /* It is assumed that the caller of this function
4786          * sets the vsi->state __I40E_DOWN bit.
4787          */
4788         if (vsi->netdev) {
4789                 netif_carrier_off(vsi->netdev);
4790                 netif_tx_disable(vsi->netdev);
4791         }
4792         i40e_vsi_disable_irq(vsi);
4793         i40e_vsi_control_rings(vsi, false);
4794         i40e_napi_disable_all(vsi);
4795
4796         for (i = 0; i < vsi->num_queue_pairs; i++) {
4797                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4798                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4799         }
4800 }
4801
4802 /**
4803  * i40e_setup_tc - configure multiple traffic classes
4804  * @netdev: net device to configure
4805  * @tc: number of traffic classes to enable
4806  **/
4807 #ifdef I40E_FCOE
4808 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4809 #else
4810 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4811 #endif
4812 {
4813         struct i40e_netdev_priv *np = netdev_priv(netdev);
4814         struct i40e_vsi *vsi = np->vsi;
4815         struct i40e_pf *pf = vsi->back;
4816         u8 enabled_tc = 0;
4817         int ret = -EINVAL;
4818         int i;
4819
4820         /* Check if DCB enabled to continue */
4821         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4822                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4823                 goto exit;
4824         }
4825
4826         /* Check if MFP enabled */
4827         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4828                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4829                 goto exit;
4830         }
4831
4832         /* Check whether tc count is within enabled limit */
4833         if (tc > i40e_pf_get_num_tc(pf)) {
4834                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4835                 goto exit;
4836         }
4837
4838         /* Generate TC map for number of tc requested */
4839         for (i = 0; i < tc; i++)
4840                 enabled_tc |= (1 << i);
4841
4842         /* Requesting same TC configuration as already enabled */
4843         if (enabled_tc == vsi->tc_config.enabled_tc)
4844                 return 0;
4845
4846         /* Quiesce VSI queues */
4847         i40e_quiesce_vsi(vsi);
4848
4849         /* Configure VSI for enabled TCs */
4850         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4851         if (ret) {
4852                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4853                             vsi->seid);
4854                 goto exit;
4855         }
4856
4857         /* Unquiesce VSI */
4858         i40e_unquiesce_vsi(vsi);
4859
4860 exit:
4861         return ret;
4862 }
4863
4864 /**
4865  * i40e_open - Called when a network interface is made active
4866  * @netdev: network interface device structure
4867  *
4868  * The open entry point is called when a network interface is made
4869  * active by the system (IFF_UP).  At this point all resources needed
4870  * for transmit and receive operations are allocated, the interrupt
4871  * handler is registered with the OS, the netdev watchdog subtask is
4872  * enabled, and the stack is notified that the interface is ready.
4873  *
4874  * Returns 0 on success, negative value on failure
4875  **/
4876 int i40e_open(struct net_device *netdev)
4877 {
4878         struct i40e_netdev_priv *np = netdev_priv(netdev);
4879         struct i40e_vsi *vsi = np->vsi;
4880         struct i40e_pf *pf = vsi->back;
4881         int err;
4882
4883         /* disallow open during test or if eeprom is broken */
4884         if (test_bit(__I40E_TESTING, &pf->state) ||
4885             test_bit(__I40E_BAD_EEPROM, &pf->state))
4886                 return -EBUSY;
4887
4888         netif_carrier_off(netdev);
4889
4890         err = i40e_vsi_open(vsi);
4891         if (err)
4892                 return err;
4893
4894         /* configure global TSO hardware offload settings */
4895         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4896                                                        TCP_FLAG_FIN) >> 16);
4897         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4898                                                        TCP_FLAG_FIN |
4899                                                        TCP_FLAG_CWR) >> 16);
4900         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4901
4902 #ifdef CONFIG_I40E_VXLAN
4903         vxlan_get_rx_port(netdev);
4904 #endif
4905
4906         return 0;
4907 }
4908
4909 /**
4910  * i40e_vsi_open -
4911  * @vsi: the VSI to open
4912  *
4913  * Finish initialization of the VSI.
4914  *
4915  * Returns 0 on success, negative value on failure
4916  **/
4917 int i40e_vsi_open(struct i40e_vsi *vsi)
4918 {
4919         struct i40e_pf *pf = vsi->back;
4920         char int_name[I40E_INT_NAME_STR_LEN];
4921         int err;
4922
4923         /* allocate descriptors */
4924         err = i40e_vsi_setup_tx_resources(vsi);
4925         if (err)
4926                 goto err_setup_tx;
4927         err = i40e_vsi_setup_rx_resources(vsi);
4928         if (err)
4929                 goto err_setup_rx;
4930
4931         err = i40e_vsi_configure(vsi);
4932         if (err)
4933                 goto err_setup_rx;
4934
4935         if (vsi->netdev) {
4936                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4937                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4938                 err = i40e_vsi_request_irq(vsi, int_name);
4939                 if (err)
4940                         goto err_setup_rx;
4941
4942                 /* Notify the stack of the actual queue counts. */
4943                 err = netif_set_real_num_tx_queues(vsi->netdev,
4944                                                    vsi->num_queue_pairs);
4945                 if (err)
4946                         goto err_set_queues;
4947
4948                 err = netif_set_real_num_rx_queues(vsi->netdev,
4949                                                    vsi->num_queue_pairs);
4950                 if (err)
4951                         goto err_set_queues;
4952
4953         } else if (vsi->type == I40E_VSI_FDIR) {
4954                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4955                          dev_driver_string(&pf->pdev->dev),
4956                          dev_name(&pf->pdev->dev));
4957                 err = i40e_vsi_request_irq(vsi, int_name);
4958
4959         } else {
4960                 err = -EINVAL;
4961                 goto err_setup_rx;
4962         }
4963
4964         err = i40e_up_complete(vsi);
4965         if (err)
4966                 goto err_up_complete;
4967
4968         return 0;
4969
4970 err_up_complete:
4971         i40e_down(vsi);
4972 err_set_queues:
4973         i40e_vsi_free_irq(vsi);
4974 err_setup_rx:
4975         i40e_vsi_free_rx_resources(vsi);
4976 err_setup_tx:
4977         i40e_vsi_free_tx_resources(vsi);
4978         if (vsi == pf->vsi[pf->lan_vsi])
4979                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4980
4981         return err;
4982 }
4983
4984 /**
4985  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4986  * @pf: Pointer to PF
4987  *
4988  * This function destroys the hlist where all the Flow Director
4989  * filters were saved.
4990  **/
4991 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4992 {
4993         struct i40e_fdir_filter *filter;
4994         struct hlist_node *node2;
4995
4996         hlist_for_each_entry_safe(filter, node2,
4997                                   &pf->fdir_filter_list, fdir_node) {
4998                 hlist_del(&filter->fdir_node);
4999                 kfree(filter);
5000         }
5001         pf->fdir_pf_active_filters = 0;
5002 }
5003
5004 /**
5005  * i40e_close - Disables a network interface
5006  * @netdev: network interface device structure
5007  *
5008  * The close entry point is called when an interface is de-activated
5009  * by the OS.  The hardware is still under the driver's control, but
5010  * this netdev interface is disabled.
5011  *
5012  * Returns 0, this is not allowed to fail
5013  **/
5014 #ifdef I40E_FCOE
5015 int i40e_close(struct net_device *netdev)
5016 #else
5017 static int i40e_close(struct net_device *netdev)
5018 #endif
5019 {
5020         struct i40e_netdev_priv *np = netdev_priv(netdev);
5021         struct i40e_vsi *vsi = np->vsi;
5022
5023         i40e_vsi_close(vsi);
5024
5025         return 0;
5026 }
5027
5028 /**
5029  * i40e_do_reset - Start a PF or Core Reset sequence
5030  * @pf: board private structure
5031  * @reset_flags: which reset is requested
5032  *
5033  * The essential difference in resets is that the PF Reset
5034  * doesn't clear the packet buffers, doesn't reset the PE
5035  * firmware, and doesn't bother the other PFs on the chip.
5036  **/
5037 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5038 {
5039         u32 val;
5040
5041         WARN_ON(in_interrupt());
5042
5043         if (i40e_check_asq_alive(&pf->hw))
5044                 i40e_vc_notify_reset(pf);
5045
5046         /* do the biggest reset indicated */
5047         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5048
5049                 /* Request a Global Reset
5050                  *
5051                  * This will start the chip's countdown to the actual full
5052                  * chip reset event, and a warning interrupt to be sent
5053                  * to all PFs, including the requestor.  Our handler
5054                  * for the warning interrupt will deal with the shutdown
5055                  * and recovery of the switch setup.
5056                  */
5057                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5058                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5059                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5060                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5061
5062         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5063
5064                 /* Request a Core Reset
5065                  *
5066                  * Same as Global Reset, except does *not* include the MAC/PHY
5067                  */
5068                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5069                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5070                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5071                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5072                 i40e_flush(&pf->hw);
5073
5074         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5075
5076                 /* Request a PF Reset
5077                  *
5078                  * Resets only the PF-specific registers
5079                  *
5080                  * This goes directly to the tear-down and rebuild of
5081                  * the switch, since we need to do all the recovery as
5082                  * for the Core Reset.
5083                  */
5084                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5085                 i40e_handle_reset_warning(pf);
5086
5087         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5088                 int v;
5089
5090                 /* Find the VSI(s) that requested a re-init */
5091                 dev_info(&pf->pdev->dev,
5092                          "VSI reinit requested\n");
5093                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5094                         struct i40e_vsi *vsi = pf->vsi[v];
5095                         if (vsi != NULL &&
5096                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5097                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5098                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5099                         }
5100                 }
5101
5102                 /* no further action needed, so return now */
5103                 return;
5104         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5105                 int v;
5106
5107                 /* Find the VSI(s) that needs to be brought down */
5108                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5109                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5110                         struct i40e_vsi *vsi = pf->vsi[v];
5111                         if (vsi != NULL &&
5112                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5113                                 set_bit(__I40E_DOWN, &vsi->state);
5114                                 i40e_down(vsi);
5115                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5116                         }
5117                 }
5118
5119                 /* no further action needed, so return now */
5120                 return;
5121         } else {
5122                 dev_info(&pf->pdev->dev,
5123                          "bad reset request 0x%08x\n", reset_flags);
5124                 return;
5125         }
5126 }
5127
5128 #ifdef CONFIG_I40E_DCB
5129 /**
5130  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5131  * @pf: board private structure
5132  * @old_cfg: current DCB config
5133  * @new_cfg: new DCB config
5134  **/
5135 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5136                             struct i40e_dcbx_config *old_cfg,
5137                             struct i40e_dcbx_config *new_cfg)
5138 {
5139         bool need_reconfig = false;
5140
5141         /* Check if ETS configuration has changed */
5142         if (memcmp(&new_cfg->etscfg,
5143                    &old_cfg->etscfg,
5144                    sizeof(new_cfg->etscfg))) {
5145                 /* If Priority Table has changed reconfig is needed */
5146                 if (memcmp(&new_cfg->etscfg.prioritytable,
5147                            &old_cfg->etscfg.prioritytable,
5148                            sizeof(new_cfg->etscfg.prioritytable))) {
5149                         need_reconfig = true;
5150                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5151                 }
5152
5153                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5154                            &old_cfg->etscfg.tcbwtable,
5155                            sizeof(new_cfg->etscfg.tcbwtable)))
5156                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5157
5158                 if (memcmp(&new_cfg->etscfg.tsatable,
5159                            &old_cfg->etscfg.tsatable,
5160                            sizeof(new_cfg->etscfg.tsatable)))
5161                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5162         }
5163
5164         /* Check if PFC configuration has changed */
5165         if (memcmp(&new_cfg->pfc,
5166                    &old_cfg->pfc,
5167                    sizeof(new_cfg->pfc))) {
5168                 need_reconfig = true;
5169                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5170         }
5171
5172         /* Check if APP Table has changed */
5173         if (memcmp(&new_cfg->app,
5174                    &old_cfg->app,
5175                    sizeof(new_cfg->app))) {
5176                 need_reconfig = true;
5177                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5178         }
5179
5180         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5181                 need_reconfig);
5182         return need_reconfig;
5183 }
5184
5185 /**
5186  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5187  * @pf: board private structure
5188  * @e: event info posted on ARQ
5189  **/
5190 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5191                                   struct i40e_arq_event_info *e)
5192 {
5193         struct i40e_aqc_lldp_get_mib *mib =
5194                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5195         struct i40e_hw *hw = &pf->hw;
5196         struct i40e_dcbx_config tmp_dcbx_cfg;
5197         bool need_reconfig = false;
5198         int ret = 0;
5199         u8 type;
5200
5201         /* Not DCB capable or capability disabled */
5202         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5203                 return ret;
5204
5205         /* Ignore if event is not for Nearest Bridge */
5206         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5207                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5208         dev_dbg(&pf->pdev->dev,
5209                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5210         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5211                 return ret;
5212
5213         /* Check MIB Type and return if event for Remote MIB update */
5214         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5215         dev_dbg(&pf->pdev->dev,
5216                 "%s: LLDP event mib type %s\n", __func__,
5217                 type ? "remote" : "local");
5218         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5219                 /* Update the remote cached instance and return */
5220                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5221                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5222                                 &hw->remote_dcbx_config);
5223                 goto exit;
5224         }
5225
5226         /* Store the old configuration */
5227         tmp_dcbx_cfg = hw->local_dcbx_config;
5228
5229         /* Reset the old DCBx configuration data */
5230         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5231         /* Get updated DCBX data from firmware */
5232         ret = i40e_get_dcb_config(&pf->hw);
5233         if (ret) {
5234                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5235                 goto exit;
5236         }
5237
5238         /* No change detected in DCBX configs */
5239         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5240                     sizeof(tmp_dcbx_cfg))) {
5241                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5242                 goto exit;
5243         }
5244
5245         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5246                                                &hw->local_dcbx_config);
5247
5248         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5249
5250         if (!need_reconfig)
5251                 goto exit;
5252
5253         /* Enable DCB tagging only when more than one TC */
5254         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5255                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5256         else
5257                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5258
5259         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5260         /* Reconfiguration needed quiesce all VSIs */
5261         i40e_pf_quiesce_all_vsi(pf);
5262
5263         /* Changes in configuration update VEB/VSI */
5264         i40e_dcb_reconfigure(pf);
5265
5266         ret = i40e_resume_port_tx(pf);
5267
5268         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5269         /* In case of error no point in resuming VSIs */
5270         if (ret)
5271                 goto exit;
5272
5273         /* Wait for the PF's Tx queues to be disabled */
5274         ret = i40e_pf_wait_txq_disabled(pf);
5275         if (ret) {
5276                 /* Schedule PF reset to recover */
5277                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5278                 i40e_service_event_schedule(pf);
5279         } else {
5280                 i40e_pf_unquiesce_all_vsi(pf);
5281         }
5282
5283 exit:
5284         return ret;
5285 }
5286 #endif /* CONFIG_I40E_DCB */
5287
5288 /**
5289  * i40e_do_reset_safe - Protected reset path for userland calls.
5290  * @pf: board private structure
5291  * @reset_flags: which reset is requested
5292  *
5293  **/
5294 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5295 {
5296         rtnl_lock();
5297         i40e_do_reset(pf, reset_flags);
5298         rtnl_unlock();
5299 }
5300
5301 /**
5302  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5303  * @pf: board private structure
5304  * @e: event info posted on ARQ
5305  *
5306  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5307  * and VF queues
5308  **/
5309 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5310                                            struct i40e_arq_event_info *e)
5311 {
5312         struct i40e_aqc_lan_overflow *data =
5313                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5314         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5315         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5316         struct i40e_hw *hw = &pf->hw;
5317         struct i40e_vf *vf;
5318         u16 vf_id;
5319
5320         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5321                 queue, qtx_ctl);
5322
5323         /* Queue belongs to VF, find the VF and issue VF reset */
5324         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5325             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5326                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5327                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5328                 vf_id -= hw->func_caps.vf_base_id;
5329                 vf = &pf->vf[vf_id];
5330                 i40e_vc_notify_vf_reset(vf);
5331                 /* Allow VF to process pending reset notification */
5332                 msleep(20);
5333                 i40e_reset_vf(vf, false);
5334         }
5335 }
5336
5337 /**
5338  * i40e_service_event_complete - Finish up the service event
5339  * @pf: board private structure
5340  **/
5341 static void i40e_service_event_complete(struct i40e_pf *pf)
5342 {
5343         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5344
5345         /* flush memory to make sure state is correct before next watchog */
5346         smp_mb__before_atomic();
5347         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5348 }
5349
5350 /**
5351  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5352  * @pf: board private structure
5353  **/
5354 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5355 {
5356         u32 val, fcnt_prog;
5357
5358         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5359         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5360         return fcnt_prog;
5361 }
5362
5363 /**
5364  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5365  * @pf: board private structure
5366  **/
5367 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5368 {
5369         u32 val, fcnt_prog;
5370
5371         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5372         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5373                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5374                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5375         return fcnt_prog;
5376 }
5377
5378 /**
5379  * i40e_get_global_fd_count - Get total FD filters programmed on device
5380  * @pf: board private structure
5381  **/
5382 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5383 {
5384         u32 val, fcnt_prog;
5385
5386         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5387         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5388                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5389                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5390         return fcnt_prog;
5391 }
5392
5393 /**
5394  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5395  * @pf: board private structure
5396  **/
5397 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5398 {
5399         u32 fcnt_prog, fcnt_avail;
5400
5401         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5402                 return;
5403
5404         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5405          * to re-enable
5406          */
5407         fcnt_prog = i40e_get_global_fd_count(pf);
5408         fcnt_avail = pf->fdir_pf_filter_count;
5409         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5410             (pf->fd_add_err == 0) ||
5411             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5412                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5413                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5414                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5415                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5416                 }
5417         }
5418         /* Wait for some more space to be available to turn on ATR */
5419         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5420                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5421                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5422                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5423                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5424                 }
5425         }
5426 }
5427
5428 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5429 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5430 /**
5431  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5432  * @pf: board private structure
5433  **/
5434 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5435 {
5436         unsigned long min_flush_time;
5437         int flush_wait_retry = 50;
5438         bool disable_atr = false;
5439         int fd_room;
5440         int reg;
5441
5442         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5443                 return;
5444
5445         if (time_after(jiffies, pf->fd_flush_timestamp +
5446                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5447                 /* If the flush is happening too quick and we have mostly
5448                  * SB rules we should not re-enable ATR for some time.
5449                  */
5450                 min_flush_time = pf->fd_flush_timestamp
5451                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5452                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5453
5454                 if (!(time_after(jiffies, min_flush_time)) &&
5455                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5456                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5457                         disable_atr = true;
5458                 }
5459
5460                 pf->fd_flush_timestamp = jiffies;
5461                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5462                 /* flush all filters */
5463                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5464                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5465                 i40e_flush(&pf->hw);
5466                 pf->fd_flush_cnt++;
5467                 pf->fd_add_err = 0;
5468                 do {
5469                         /* Check FD flush status every 5-6msec */
5470                         usleep_range(5000, 6000);
5471                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5472                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5473                                 break;
5474                 } while (flush_wait_retry--);
5475                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5476                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5477                 } else {
5478                         /* replay sideband filters */
5479                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5480                         if (!disable_atr)
5481                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5482                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5483                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5484                 }
5485         }
5486 }
5487
5488 /**
5489  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5490  * @pf: board private structure
5491  **/
5492 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5493 {
5494         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5495 }
5496
5497 /* We can see up to 256 filter programming desc in transit if the filters are
5498  * being applied really fast; before we see the first
5499  * filter miss error on Rx queue 0. Accumulating enough error messages before
5500  * reacting will make sure we don't cause flush too often.
5501  */
5502 #define I40E_MAX_FD_PROGRAM_ERROR 256
5503
5504 /**
5505  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5506  * @pf: board private structure
5507  **/
5508 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5509 {
5510
5511         /* if interface is down do nothing */
5512         if (test_bit(__I40E_DOWN, &pf->state))
5513                 return;
5514
5515         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5516                 return;
5517
5518         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5519                 i40e_fdir_flush_and_replay(pf);
5520
5521         i40e_fdir_check_and_reenable(pf);
5522
5523 }
5524
5525 /**
5526  * i40e_vsi_link_event - notify VSI of a link event
5527  * @vsi: vsi to be notified
5528  * @link_up: link up or down
5529  **/
5530 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5531 {
5532         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5533                 return;
5534
5535         switch (vsi->type) {
5536         case I40E_VSI_MAIN:
5537 #ifdef I40E_FCOE
5538         case I40E_VSI_FCOE:
5539 #endif
5540                 if (!vsi->netdev || !vsi->netdev_registered)
5541                         break;
5542
5543                 if (link_up) {
5544                         netif_carrier_on(vsi->netdev);
5545                         netif_tx_wake_all_queues(vsi->netdev);
5546                 } else {
5547                         netif_carrier_off(vsi->netdev);
5548                         netif_tx_stop_all_queues(vsi->netdev);
5549                 }
5550                 break;
5551
5552         case I40E_VSI_SRIOV:
5553         case I40E_VSI_VMDQ2:
5554         case I40E_VSI_CTRL:
5555         case I40E_VSI_MIRROR:
5556         default:
5557                 /* there is no notification for other VSIs */
5558                 break;
5559         }
5560 }
5561
5562 /**
5563  * i40e_veb_link_event - notify elements on the veb of a link event
5564  * @veb: veb to be notified
5565  * @link_up: link up or down
5566  **/
5567 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5568 {
5569         struct i40e_pf *pf;
5570         int i;
5571
5572         if (!veb || !veb->pf)
5573                 return;
5574         pf = veb->pf;
5575
5576         /* depth first... */
5577         for (i = 0; i < I40E_MAX_VEB; i++)
5578                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5579                         i40e_veb_link_event(pf->veb[i], link_up);
5580
5581         /* ... now the local VSIs */
5582         for (i = 0; i < pf->num_alloc_vsi; i++)
5583                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5584                         i40e_vsi_link_event(pf->vsi[i], link_up);
5585 }
5586
5587 /**
5588  * i40e_link_event - Update netif_carrier status
5589  * @pf: board private structure
5590  **/
5591 static void i40e_link_event(struct i40e_pf *pf)
5592 {
5593         bool new_link, old_link;
5594         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5595         u8 new_link_speed, old_link_speed;
5596
5597         /* set this to force the get_link_status call to refresh state */
5598         pf->hw.phy.get_link_info = true;
5599
5600         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5601         new_link = i40e_get_link_status(&pf->hw);
5602         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5603         new_link_speed = pf->hw.phy.link_info.link_speed;
5604
5605         if (new_link == old_link &&
5606             new_link_speed == old_link_speed &&
5607             (test_bit(__I40E_DOWN, &vsi->state) ||
5608              new_link == netif_carrier_ok(vsi->netdev)))
5609                 return;
5610
5611         if (!test_bit(__I40E_DOWN, &vsi->state))
5612                 i40e_print_link_message(vsi, new_link);
5613
5614         /* Notify the base of the switch tree connected to
5615          * the link.  Floating VEBs are not notified.
5616          */
5617         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5618                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5619         else
5620                 i40e_vsi_link_event(vsi, new_link);
5621
5622         if (pf->vf)
5623                 i40e_vc_notify_link_state(pf);
5624
5625         if (pf->flags & I40E_FLAG_PTP)
5626                 i40e_ptp_set_increment(pf);
5627 }
5628
5629 /**
5630  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5631  * @pf: board private structure
5632  *
5633  * Set the per-queue flags to request a check for stuck queues in the irq
5634  * clean functions, then force interrupts to be sure the irq clean is called.
5635  **/
5636 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5637 {
5638         int i, v;
5639
5640         /* If we're down or resetting, just bail */
5641         if (test_bit(__I40E_DOWN, &pf->state) ||
5642             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5643                 return;
5644
5645         /* for each VSI/netdev
5646          *     for each Tx queue
5647          *         set the check flag
5648          *     for each q_vector
5649          *         force an interrupt
5650          */
5651         for (v = 0; v < pf->num_alloc_vsi; v++) {
5652                 struct i40e_vsi *vsi = pf->vsi[v];
5653                 int armed = 0;
5654
5655                 if (!pf->vsi[v] ||
5656                     test_bit(__I40E_DOWN, &vsi->state) ||
5657                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5658                         continue;
5659
5660                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5661                         set_check_for_tx_hang(vsi->tx_rings[i]);
5662                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5663                                      &vsi->tx_rings[i]->state))
5664                                 armed++;
5665                 }
5666
5667                 if (armed) {
5668                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5669                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5670                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5671                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5672                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5673                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5674                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5675                         } else {
5676                                 u16 vec = vsi->base_vector - 1;
5677                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5678                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5679                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5680                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5681                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5682                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5683                                         wr32(&vsi->back->hw,
5684                                              I40E_PFINT_DYN_CTLN(vec), val);
5685                         }
5686                         i40e_flush(&vsi->back->hw);
5687                 }
5688         }
5689 }
5690
5691 /**
5692  * i40e_watchdog_subtask - periodic checks not using event driven response
5693  * @pf: board private structure
5694  **/
5695 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5696 {
5697         int i;
5698
5699         /* if interface is down do nothing */
5700         if (test_bit(__I40E_DOWN, &pf->state) ||
5701             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5702                 return;
5703
5704         /* make sure we don't do these things too often */
5705         if (time_before(jiffies, (pf->service_timer_previous +
5706                                   pf->service_timer_period)))
5707                 return;
5708         pf->service_timer_previous = jiffies;
5709
5710         i40e_check_hang_subtask(pf);
5711         i40e_link_event(pf);
5712
5713         /* Update the stats for active netdevs so the network stack
5714          * can look at updated numbers whenever it cares to
5715          */
5716         for (i = 0; i < pf->num_alloc_vsi; i++)
5717                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5718                         i40e_update_stats(pf->vsi[i]);
5719
5720         /* Update the stats for the active switching components */
5721         for (i = 0; i < I40E_MAX_VEB; i++)
5722                 if (pf->veb[i])
5723                         i40e_update_veb_stats(pf->veb[i]);
5724
5725         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5726 }
5727
5728 /**
5729  * i40e_reset_subtask - Set up for resetting the device and driver
5730  * @pf: board private structure
5731  **/
5732 static void i40e_reset_subtask(struct i40e_pf *pf)
5733 {
5734         u32 reset_flags = 0;
5735
5736         rtnl_lock();
5737         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5738                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5739                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5740         }
5741         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5742                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5743                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5744         }
5745         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5746                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5747                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5748         }
5749         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5750                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5751                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5752         }
5753         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5754                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5755                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5756         }
5757
5758         /* If there's a recovery already waiting, it takes
5759          * precedence before starting a new reset sequence.
5760          */
5761         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5762                 i40e_handle_reset_warning(pf);
5763                 goto unlock;
5764         }
5765
5766         /* If we're already down or resetting, just bail */
5767         if (reset_flags &&
5768             !test_bit(__I40E_DOWN, &pf->state) &&
5769             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5770                 i40e_do_reset(pf, reset_flags);
5771
5772 unlock:
5773         rtnl_unlock();
5774 }
5775
5776 /**
5777  * i40e_handle_link_event - Handle link event
5778  * @pf: board private structure
5779  * @e: event info posted on ARQ
5780  **/
5781 static void i40e_handle_link_event(struct i40e_pf *pf,
5782                                    struct i40e_arq_event_info *e)
5783 {
5784         struct i40e_hw *hw = &pf->hw;
5785         struct i40e_aqc_get_link_status *status =
5786                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5787
5788         /* save off old link status information */
5789         hw->phy.link_info_old = hw->phy.link_info;
5790
5791         /* Do a new status request to re-enable LSE reporting
5792          * and load new status information into the hw struct
5793          * This completely ignores any state information
5794          * in the ARQ event info, instead choosing to always
5795          * issue the AQ update link status command.
5796          */
5797         i40e_link_event(pf);
5798
5799         /* check for unqualified module, if link is down */
5800         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5801             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5802             (!(status->link_info & I40E_AQ_LINK_UP)))
5803                 dev_err(&pf->pdev->dev,
5804                         "The driver failed to link because an unqualified module was detected.\n");
5805 }
5806
5807 /**
5808  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5809  * @pf: board private structure
5810  **/
5811 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5812 {
5813         struct i40e_arq_event_info event;
5814         struct i40e_hw *hw = &pf->hw;
5815         u16 pending, i = 0;
5816         i40e_status ret;
5817         u16 opcode;
5818         u32 oldval;
5819         u32 val;
5820
5821         /* Do not run clean AQ when PF reset fails */
5822         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5823                 return;
5824
5825         /* check for error indications */
5826         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5827         oldval = val;
5828         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5829                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5830                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5831         }
5832         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5833                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5834                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5835         }
5836         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5837                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5838                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5839         }
5840         if (oldval != val)
5841                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5842
5843         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5844         oldval = val;
5845         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5846                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5847                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5848         }
5849         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5850                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5851                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5852         }
5853         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5854                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5855                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5856         }
5857         if (oldval != val)
5858                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5859
5860         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5861         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5862         if (!event.msg_buf)
5863                 return;
5864
5865         do {
5866                 ret = i40e_clean_arq_element(hw, &event, &pending);
5867                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5868                         break;
5869                 else if (ret) {
5870                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5871                         break;
5872                 }
5873
5874                 opcode = le16_to_cpu(event.desc.opcode);
5875                 switch (opcode) {
5876
5877                 case i40e_aqc_opc_get_link_status:
5878                         i40e_handle_link_event(pf, &event);
5879                         break;
5880                 case i40e_aqc_opc_send_msg_to_pf:
5881                         ret = i40e_vc_process_vf_msg(pf,
5882                                         le16_to_cpu(event.desc.retval),
5883                                         le32_to_cpu(event.desc.cookie_high),
5884                                         le32_to_cpu(event.desc.cookie_low),
5885                                         event.msg_buf,
5886                                         event.msg_len);
5887                         break;
5888                 case i40e_aqc_opc_lldp_update_mib:
5889                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5890 #ifdef CONFIG_I40E_DCB
5891                         rtnl_lock();
5892                         ret = i40e_handle_lldp_event(pf, &event);
5893                         rtnl_unlock();
5894 #endif /* CONFIG_I40E_DCB */
5895                         break;
5896                 case i40e_aqc_opc_event_lan_overflow:
5897                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5898                         i40e_handle_lan_overflow_event(pf, &event);
5899                         break;
5900                 case i40e_aqc_opc_send_msg_to_peer:
5901                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5902                         break;
5903                 case i40e_aqc_opc_nvm_erase:
5904                 case i40e_aqc_opc_nvm_update:
5905                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
5906                         break;
5907                 default:
5908                         dev_info(&pf->pdev->dev,
5909                                  "ARQ Error: Unknown event 0x%04x received\n",
5910                                  opcode);
5911                         break;
5912                 }
5913         } while (pending && (i++ < pf->adminq_work_limit));
5914
5915         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5916         /* re-enable Admin queue interrupt cause */
5917         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5918         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5919         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5920         i40e_flush(hw);
5921
5922         kfree(event.msg_buf);
5923 }
5924
5925 /**
5926  * i40e_verify_eeprom - make sure eeprom is good to use
5927  * @pf: board private structure
5928  **/
5929 static void i40e_verify_eeprom(struct i40e_pf *pf)
5930 {
5931         int err;
5932
5933         err = i40e_diag_eeprom_test(&pf->hw);
5934         if (err) {
5935                 /* retry in case of garbage read */
5936                 err = i40e_diag_eeprom_test(&pf->hw);
5937                 if (err) {
5938                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5939                                  err);
5940                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5941                 }
5942         }
5943
5944         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5945                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5946                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5947         }
5948 }
5949
5950 /**
5951  * i40e_enable_pf_switch_lb
5952  * @pf: pointer to the PF structure
5953  *
5954  * enable switch loop back or die - no point in a return value
5955  **/
5956 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
5957 {
5958         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5959         struct i40e_vsi_context ctxt;
5960         int aq_ret;
5961
5962         ctxt.seid = pf->main_vsi_seid;
5963         ctxt.pf_num = pf->hw.pf_id;
5964         ctxt.vf_num = 0;
5965         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5966         if (aq_ret) {
5967                 dev_info(&pf->pdev->dev,
5968                          "%s couldn't get PF vsi config, err %d, aq_err %d\n",
5969                          __func__, aq_ret, pf->hw.aq.asq_last_status);
5970                 return;
5971         }
5972         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5973         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5974         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5975
5976         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
5977         if (aq_ret) {
5978                 dev_info(&pf->pdev->dev,
5979                          "%s: update vsi switch failed, aq_err=%d\n",
5980                          __func__, vsi->back->hw.aq.asq_last_status);
5981         }
5982 }
5983
5984 /**
5985  * i40e_disable_pf_switch_lb
5986  * @pf: pointer to the PF structure
5987  *
5988  * disable switch loop back or die - no point in a return value
5989  **/
5990 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
5991 {
5992         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5993         struct i40e_vsi_context ctxt;
5994         int aq_ret;
5995
5996         ctxt.seid = pf->main_vsi_seid;
5997         ctxt.pf_num = pf->hw.pf_id;
5998         ctxt.vf_num = 0;
5999         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6000         if (aq_ret) {
6001                 dev_info(&pf->pdev->dev,
6002                          "%s couldn't get PF vsi config, err %d, aq_err %d\n",
6003                          __func__, aq_ret, pf->hw.aq.asq_last_status);
6004                 return;
6005         }
6006         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6007         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6008         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6009
6010         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6011         if (aq_ret) {
6012                 dev_info(&pf->pdev->dev,
6013                          "%s: update vsi switch failed, aq_err=%d\n",
6014                          __func__, vsi->back->hw.aq.asq_last_status);
6015         }
6016 }
6017
6018 /**
6019  * i40e_config_bridge_mode - Configure the HW bridge mode
6020  * @veb: pointer to the bridge instance
6021  *
6022  * Configure the loop back mode for the LAN VSI that is downlink to the
6023  * specified HW bridge instance. It is expected this function is called
6024  * when a new HW bridge is instantiated.
6025  **/
6026 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6027 {
6028         struct i40e_pf *pf = veb->pf;
6029
6030         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6031                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6032         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6033                 i40e_disable_pf_switch_lb(pf);
6034         else
6035                 i40e_enable_pf_switch_lb(pf);
6036 }
6037
6038 /**
6039  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6040  * @veb: pointer to the VEB instance
6041  *
6042  * This is a recursive function that first builds the attached VSIs then
6043  * recurses in to build the next layer of VEB.  We track the connections
6044  * through our own index numbers because the seid's from the HW could
6045  * change across the reset.
6046  **/
6047 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6048 {
6049         struct i40e_vsi *ctl_vsi = NULL;
6050         struct i40e_pf *pf = veb->pf;
6051         int v, veb_idx;
6052         int ret;
6053
6054         /* build VSI that owns this VEB, temporarily attached to base VEB */
6055         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6056                 if (pf->vsi[v] &&
6057                     pf->vsi[v]->veb_idx == veb->idx &&
6058                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6059                         ctl_vsi = pf->vsi[v];
6060                         break;
6061                 }
6062         }
6063         if (!ctl_vsi) {
6064                 dev_info(&pf->pdev->dev,
6065                          "missing owner VSI for veb_idx %d\n", veb->idx);
6066                 ret = -ENOENT;
6067                 goto end_reconstitute;
6068         }
6069         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6070                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6071         ret = i40e_add_vsi(ctl_vsi);
6072         if (ret) {
6073                 dev_info(&pf->pdev->dev,
6074                          "rebuild of owner VSI failed: %d\n", ret);
6075                 goto end_reconstitute;
6076         }
6077         i40e_vsi_reset_stats(ctl_vsi);
6078
6079         /* create the VEB in the switch and move the VSI onto the VEB */
6080         ret = i40e_add_veb(veb, ctl_vsi);
6081         if (ret)
6082                 goto end_reconstitute;
6083
6084         i40e_config_bridge_mode(veb);
6085
6086         /* create the remaining VSIs attached to this VEB */
6087         for (v = 0; v < pf->num_alloc_vsi; v++) {
6088                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6089                         continue;
6090
6091                 if (pf->vsi[v]->veb_idx == veb->idx) {
6092                         struct i40e_vsi *vsi = pf->vsi[v];
6093                         vsi->uplink_seid = veb->seid;
6094                         ret = i40e_add_vsi(vsi);
6095                         if (ret) {
6096                                 dev_info(&pf->pdev->dev,
6097                                          "rebuild of vsi_idx %d failed: %d\n",
6098                                          v, ret);
6099                                 goto end_reconstitute;
6100                         }
6101                         i40e_vsi_reset_stats(vsi);
6102                 }
6103         }
6104
6105         /* create any VEBs attached to this VEB - RECURSION */
6106         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6107                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6108                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6109                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6110                         if (ret)
6111                                 break;
6112                 }
6113         }
6114
6115 end_reconstitute:
6116         return ret;
6117 }
6118
6119 /**
6120  * i40e_get_capabilities - get info about the HW
6121  * @pf: the PF struct
6122  **/
6123 static int i40e_get_capabilities(struct i40e_pf *pf)
6124 {
6125         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6126         u16 data_size;
6127         int buf_len;
6128         int err;
6129
6130         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6131         do {
6132                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6133                 if (!cap_buf)
6134                         return -ENOMEM;
6135
6136                 /* this loads the data into the hw struct for us */
6137                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6138                                             &data_size,
6139                                             i40e_aqc_opc_list_func_capabilities,
6140                                             NULL);
6141                 /* data loaded, buffer no longer needed */
6142                 kfree(cap_buf);
6143
6144                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6145                         /* retry with a larger buffer */
6146                         buf_len = data_size;
6147                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6148                         dev_info(&pf->pdev->dev,
6149                                  "capability discovery failed: aq=%d\n",
6150                                  pf->hw.aq.asq_last_status);
6151                         return -ENODEV;
6152                 }
6153         } while (err);
6154
6155         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6156             (pf->hw.aq.fw_maj_ver < 2)) {
6157                 pf->hw.func_caps.num_msix_vectors++;
6158                 pf->hw.func_caps.num_msix_vectors_vf++;
6159         }
6160
6161         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6162                 dev_info(&pf->pdev->dev,
6163                          "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",
6164                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6165                          pf->hw.func_caps.num_msix_vectors,
6166                          pf->hw.func_caps.num_msix_vectors_vf,
6167                          pf->hw.func_caps.fd_filters_guaranteed,
6168                          pf->hw.func_caps.fd_filters_best_effort,
6169                          pf->hw.func_caps.num_tx_qp,
6170                          pf->hw.func_caps.num_vsis);
6171
6172 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6173                        + pf->hw.func_caps.num_vfs)
6174         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6175                 dev_info(&pf->pdev->dev,
6176                          "got num_vsis %d, setting num_vsis to %d\n",
6177                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6178                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6179         }
6180
6181         return 0;
6182 }
6183
6184 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6185
6186 /**
6187  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6188  * @pf: board private structure
6189  **/
6190 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6191 {
6192         struct i40e_vsi *vsi;
6193         int i;
6194
6195         /* quick workaround for an NVM issue that leaves a critical register
6196          * uninitialized
6197          */
6198         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6199                 static const u32 hkey[] = {
6200                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6201                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6202                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6203                         0x95b3a76d};
6204
6205                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6206                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6207         }
6208
6209         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6210                 return;
6211
6212         /* find existing VSI and see if it needs configuring */
6213         vsi = NULL;
6214         for (i = 0; i < pf->num_alloc_vsi; i++) {
6215                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6216                         vsi = pf->vsi[i];
6217                         break;
6218                 }
6219         }
6220
6221         /* create a new VSI if none exists */
6222         if (!vsi) {
6223                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6224                                      pf->vsi[pf->lan_vsi]->seid, 0);
6225                 if (!vsi) {
6226                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6227                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6228                         return;
6229                 }
6230         }
6231
6232         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6233 }
6234
6235 /**
6236  * i40e_fdir_teardown - release the Flow Director resources
6237  * @pf: board private structure
6238  **/
6239 static void i40e_fdir_teardown(struct i40e_pf *pf)
6240 {
6241         int i;
6242
6243         i40e_fdir_filter_exit(pf);
6244         for (i = 0; i < pf->num_alloc_vsi; i++) {
6245                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6246                         i40e_vsi_release(pf->vsi[i]);
6247                         break;
6248                 }
6249         }
6250 }
6251
6252 /**
6253  * i40e_prep_for_reset - prep for the core to reset
6254  * @pf: board private structure
6255  *
6256  * Close up the VFs and other things in prep for PF Reset.
6257   **/
6258 static void i40e_prep_for_reset(struct i40e_pf *pf)
6259 {
6260         struct i40e_hw *hw = &pf->hw;
6261         i40e_status ret = 0;
6262         u32 v;
6263
6264         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6265         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6266                 return;
6267
6268         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6269
6270         /* quiesce the VSIs and their queues that are not already DOWN */
6271         i40e_pf_quiesce_all_vsi(pf);
6272
6273         for (v = 0; v < pf->num_alloc_vsi; v++) {
6274                 if (pf->vsi[v])
6275                         pf->vsi[v]->seid = 0;
6276         }
6277
6278         i40e_shutdown_adminq(&pf->hw);
6279
6280         /* call shutdown HMC */
6281         if (hw->hmc.hmc_obj) {
6282                 ret = i40e_shutdown_lan_hmc(hw);
6283                 if (ret)
6284                         dev_warn(&pf->pdev->dev,
6285                                  "shutdown_lan_hmc failed: %d\n", ret);
6286         }
6287 }
6288
6289 /**
6290  * i40e_send_version - update firmware with driver version
6291  * @pf: PF struct
6292  */
6293 static void i40e_send_version(struct i40e_pf *pf)
6294 {
6295         struct i40e_driver_version dv;
6296
6297         dv.major_version = DRV_VERSION_MAJOR;
6298         dv.minor_version = DRV_VERSION_MINOR;
6299         dv.build_version = DRV_VERSION_BUILD;
6300         dv.subbuild_version = 0;
6301         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6302         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6303 }
6304
6305 /**
6306  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6307  * @pf: board private structure
6308  * @reinit: if the Main VSI needs to re-initialized.
6309  **/
6310 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6311 {
6312         struct i40e_hw *hw = &pf->hw;
6313         u8 set_fc_aq_fail = 0;
6314         i40e_status ret;
6315         u32 v;
6316
6317         /* Now we wait for GRST to settle out.
6318          * We don't have to delete the VEBs or VSIs from the hw switch
6319          * because the reset will make them disappear.
6320          */
6321         ret = i40e_pf_reset(hw);
6322         if (ret) {
6323                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6324                 set_bit(__I40E_RESET_FAILED, &pf->state);
6325                 goto clear_recovery;
6326         }
6327         pf->pfr_count++;
6328
6329         if (test_bit(__I40E_DOWN, &pf->state))
6330                 goto clear_recovery;
6331         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6332
6333         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6334         ret = i40e_init_adminq(&pf->hw);
6335         if (ret) {
6336                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6337                 goto clear_recovery;
6338         }
6339
6340         /* re-verify the eeprom if we just had an EMP reset */
6341         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6342                 i40e_verify_eeprom(pf);
6343
6344         i40e_clear_pxe_mode(hw);
6345         ret = i40e_get_capabilities(pf);
6346         if (ret) {
6347                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6348                          ret);
6349                 goto end_core_reset;
6350         }
6351
6352         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6353                                 hw->func_caps.num_rx_qp,
6354                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6355         if (ret) {
6356                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6357                 goto end_core_reset;
6358         }
6359         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6360         if (ret) {
6361                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6362                 goto end_core_reset;
6363         }
6364
6365 #ifdef CONFIG_I40E_DCB
6366         ret = i40e_init_pf_dcb(pf);
6367         if (ret) {
6368                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6369                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6370                 /* Continue without DCB enabled */
6371         }
6372 #endif /* CONFIG_I40E_DCB */
6373 #ifdef I40E_FCOE
6374         ret = i40e_init_pf_fcoe(pf);
6375         if (ret)
6376                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6377
6378 #endif
6379         /* do basic switch setup */
6380         ret = i40e_setup_pf_switch(pf, reinit);
6381         if (ret)
6382                 goto end_core_reset;
6383
6384         /* driver is only interested in link up/down and module qualification
6385          * reports from firmware
6386          */
6387         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6388                                        I40E_AQ_EVENT_LINK_UPDOWN |
6389                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6390         if (ret)
6391                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6392
6393         /* make sure our flow control settings are restored */
6394         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6395         if (ret)
6396                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6397
6398         /* Rebuild the VSIs and VEBs that existed before reset.
6399          * They are still in our local switch element arrays, so only
6400          * need to rebuild the switch model in the HW.
6401          *
6402          * If there were VEBs but the reconstitution failed, we'll try
6403          * try to recover minimal use by getting the basic PF VSI working.
6404          */
6405         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6406                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6407                 /* find the one VEB connected to the MAC, and find orphans */
6408                 for (v = 0; v < I40E_MAX_VEB; v++) {
6409                         if (!pf->veb[v])
6410                                 continue;
6411
6412                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6413                             pf->veb[v]->uplink_seid == 0) {
6414                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6415
6416                                 if (!ret)
6417                                         continue;
6418
6419                                 /* If Main VEB failed, we're in deep doodoo,
6420                                  * so give up rebuilding the switch and set up
6421                                  * for minimal rebuild of PF VSI.
6422                                  * If orphan failed, we'll report the error
6423                                  * but try to keep going.
6424                                  */
6425                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6426                                         dev_info(&pf->pdev->dev,
6427                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6428                                                  ret);
6429                                         pf->vsi[pf->lan_vsi]->uplink_seid
6430                                                                 = pf->mac_seid;
6431                                         break;
6432                                 } else if (pf->veb[v]->uplink_seid == 0) {
6433                                         dev_info(&pf->pdev->dev,
6434                                                  "rebuild of orphan VEB failed: %d\n",
6435                                                  ret);
6436                                 }
6437                         }
6438                 }
6439         }
6440
6441         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6442                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6443                 /* no VEB, so rebuild only the Main VSI */
6444                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6445                 if (ret) {
6446                         dev_info(&pf->pdev->dev,
6447                                  "rebuild of Main VSI failed: %d\n", ret);
6448                         goto end_core_reset;
6449                 }
6450         }
6451
6452         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6453             (pf->hw.aq.fw_maj_ver < 4)) {
6454                 msleep(75);
6455                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6456                 if (ret)
6457                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6458                                  pf->hw.aq.asq_last_status);
6459         }
6460         /* reinit the misc interrupt */
6461         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6462                 ret = i40e_setup_misc_vector(pf);
6463
6464         /* restart the VSIs that were rebuilt and running before the reset */
6465         i40e_pf_unquiesce_all_vsi(pf);
6466
6467         if (pf->num_alloc_vfs) {
6468                 for (v = 0; v < pf->num_alloc_vfs; v++)
6469                         i40e_reset_vf(&pf->vf[v], true);
6470         }
6471
6472         /* tell the firmware that we're starting */
6473         i40e_send_version(pf);
6474
6475 end_core_reset:
6476         clear_bit(__I40E_RESET_FAILED, &pf->state);
6477 clear_recovery:
6478         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6479 }
6480
6481 /**
6482  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6483  * @pf: board private structure
6484  *
6485  * Close up the VFs and other things in prep for a Core Reset,
6486  * then get ready to rebuild the world.
6487  **/
6488 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6489 {
6490         i40e_prep_for_reset(pf);
6491         i40e_reset_and_rebuild(pf, false);
6492 }
6493
6494 /**
6495  * i40e_handle_mdd_event
6496  * @pf: pointer to the PF structure
6497  *
6498  * Called from the MDD irq handler to identify possibly malicious vfs
6499  **/
6500 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6501 {
6502         struct i40e_hw *hw = &pf->hw;
6503         bool mdd_detected = false;
6504         bool pf_mdd_detected = false;
6505         struct i40e_vf *vf;
6506         u32 reg;
6507         int i;
6508
6509         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6510                 return;
6511
6512         /* find what triggered the MDD event */
6513         reg = rd32(hw, I40E_GL_MDET_TX);
6514         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6515                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6516                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6517                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6518                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6519                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6520                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6521                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6522                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6523                                 pf->hw.func_caps.base_queue;
6524                 if (netif_msg_tx_err(pf))
6525                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6526                                  event, queue, pf_num, vf_num);
6527                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6528                 mdd_detected = true;
6529         }
6530         reg = rd32(hw, I40E_GL_MDET_RX);
6531         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6532                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6533                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6534                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6535                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6536                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6537                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6538                                 pf->hw.func_caps.base_queue;
6539                 if (netif_msg_rx_err(pf))
6540                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6541                                  event, queue, func);
6542                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6543                 mdd_detected = true;
6544         }
6545
6546         if (mdd_detected) {
6547                 reg = rd32(hw, I40E_PF_MDET_TX);
6548                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6549                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6550                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6551                         pf_mdd_detected = true;
6552                 }
6553                 reg = rd32(hw, I40E_PF_MDET_RX);
6554                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6555                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6556                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6557                         pf_mdd_detected = true;
6558                 }
6559                 /* Queue belongs to the PF, initiate a reset */
6560                 if (pf_mdd_detected) {
6561                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6562                         i40e_service_event_schedule(pf);
6563                 }
6564         }
6565
6566         /* see if one of the VFs needs its hand slapped */
6567         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6568                 vf = &(pf->vf[i]);
6569                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6570                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6571                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6572                         vf->num_mdd_events++;
6573                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6574                                  i);
6575                 }
6576
6577                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6578                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6579                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6580                         vf->num_mdd_events++;
6581                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6582                                  i);
6583                 }
6584
6585                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6586                         dev_info(&pf->pdev->dev,
6587                                  "Too many MDD events on VF %d, disabled\n", i);
6588                         dev_info(&pf->pdev->dev,
6589                                  "Use PF Control I/F to re-enable the VF\n");
6590                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6591                 }
6592         }
6593
6594         /* re-enable mdd interrupt cause */
6595         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6596         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6597         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6598         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6599         i40e_flush(hw);
6600 }
6601
6602 #ifdef CONFIG_I40E_VXLAN
6603 /**
6604  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6605  * @pf: board private structure
6606  **/
6607 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6608 {
6609         struct i40e_hw *hw = &pf->hw;
6610         i40e_status ret;
6611         __be16 port;
6612         int i;
6613
6614         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6615                 return;
6616
6617         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6618
6619         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6620                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6621                         pf->pending_vxlan_bitmap &= ~(1 << i);
6622                         port = pf->vxlan_ports[i];
6623                         if (port)
6624                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6625                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6626                                                      NULL, NULL);
6627                         else
6628                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6629
6630                         if (ret) {
6631                                 dev_info(&pf->pdev->dev,
6632                                          "%s vxlan port %d, index %d failed, err %d, aq_err %d\n",
6633                                          port ? "add" : "delete",
6634                                          ntohs(port), i, ret,
6635                                          pf->hw.aq.asq_last_status);
6636                                 pf->vxlan_ports[i] = 0;
6637                         }
6638                 }
6639         }
6640 }
6641
6642 #endif
6643 /**
6644  * i40e_service_task - Run the driver's async subtasks
6645  * @work: pointer to work_struct containing our data
6646  **/
6647 static void i40e_service_task(struct work_struct *work)
6648 {
6649         struct i40e_pf *pf = container_of(work,
6650                                           struct i40e_pf,
6651                                           service_task);
6652         unsigned long start_time = jiffies;
6653
6654         /* don't bother with service tasks if a reset is in progress */
6655         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6656                 i40e_service_event_complete(pf);
6657                 return;
6658         }
6659
6660         i40e_reset_subtask(pf);
6661         i40e_handle_mdd_event(pf);
6662         i40e_vc_process_vflr_event(pf);
6663         i40e_watchdog_subtask(pf);
6664         i40e_fdir_reinit_subtask(pf);
6665         i40e_sync_filters_subtask(pf);
6666 #ifdef CONFIG_I40E_VXLAN
6667         i40e_sync_vxlan_filters_subtask(pf);
6668 #endif
6669         i40e_clean_adminq_subtask(pf);
6670
6671         i40e_service_event_complete(pf);
6672
6673         /* If the tasks have taken longer than one timer cycle or there
6674          * is more work to be done, reschedule the service task now
6675          * rather than wait for the timer to tick again.
6676          */
6677         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6678             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6679             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6680             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6681                 i40e_service_event_schedule(pf);
6682 }
6683
6684 /**
6685  * i40e_service_timer - timer callback
6686  * @data: pointer to PF struct
6687  **/
6688 static void i40e_service_timer(unsigned long data)
6689 {
6690         struct i40e_pf *pf = (struct i40e_pf *)data;
6691
6692         mod_timer(&pf->service_timer,
6693                   round_jiffies(jiffies + pf->service_timer_period));
6694         i40e_service_event_schedule(pf);
6695 }
6696
6697 /**
6698  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6699  * @vsi: the VSI being configured
6700  **/
6701 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6702 {
6703         struct i40e_pf *pf = vsi->back;
6704
6705         switch (vsi->type) {
6706         case I40E_VSI_MAIN:
6707                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6708                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6709                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6710                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6711                         vsi->num_q_vectors = pf->num_lan_msix;
6712                 else
6713                         vsi->num_q_vectors = 1;
6714
6715                 break;
6716
6717         case I40E_VSI_FDIR:
6718                 vsi->alloc_queue_pairs = 1;
6719                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6720                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6721                 vsi->num_q_vectors = 1;
6722                 break;
6723
6724         case I40E_VSI_VMDQ2:
6725                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6726                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6727                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6728                 vsi->num_q_vectors = pf->num_vmdq_msix;
6729                 break;
6730
6731         case I40E_VSI_SRIOV:
6732                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6733                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6734                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6735                 break;
6736
6737 #ifdef I40E_FCOE
6738         case I40E_VSI_FCOE:
6739                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6740                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6741                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6742                 vsi->num_q_vectors = pf->num_fcoe_msix;
6743                 break;
6744
6745 #endif /* I40E_FCOE */
6746         default:
6747                 WARN_ON(1);
6748                 return -ENODATA;
6749         }
6750
6751         return 0;
6752 }
6753
6754 /**
6755  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6756  * @type: VSI pointer
6757  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6758  *
6759  * On error: returns error code (negative)
6760  * On success: returns 0
6761  **/
6762 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6763 {
6764         int size;
6765         int ret = 0;
6766
6767         /* allocate memory for both Tx and Rx ring pointers */
6768         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6769         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6770         if (!vsi->tx_rings)
6771                 return -ENOMEM;
6772         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6773
6774         if (alloc_qvectors) {
6775                 /* allocate memory for q_vector pointers */
6776                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6777                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6778                 if (!vsi->q_vectors) {
6779                         ret = -ENOMEM;
6780                         goto err_vectors;
6781                 }
6782         }
6783         return ret;
6784
6785 err_vectors:
6786         kfree(vsi->tx_rings);
6787         return ret;
6788 }
6789
6790 /**
6791  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6792  * @pf: board private structure
6793  * @type: type of VSI
6794  *
6795  * On error: returns error code (negative)
6796  * On success: returns vsi index in PF (positive)
6797  **/
6798 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6799 {
6800         int ret = -ENODEV;
6801         struct i40e_vsi *vsi;
6802         int vsi_idx;
6803         int i;
6804
6805         /* Need to protect the allocation of the VSIs at the PF level */
6806         mutex_lock(&pf->switch_mutex);
6807
6808         /* VSI list may be fragmented if VSI creation/destruction has
6809          * been happening.  We can afford to do a quick scan to look
6810          * for any free VSIs in the list.
6811          *
6812          * find next empty vsi slot, looping back around if necessary
6813          */
6814         i = pf->next_vsi;
6815         while (i < pf->num_alloc_vsi && pf->vsi[i])
6816                 i++;
6817         if (i >= pf->num_alloc_vsi) {
6818                 i = 0;
6819                 while (i < pf->next_vsi && pf->vsi[i])
6820                         i++;
6821         }
6822
6823         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6824                 vsi_idx = i;             /* Found one! */
6825         } else {
6826                 ret = -ENODEV;
6827                 goto unlock_pf;  /* out of VSI slots! */
6828         }
6829         pf->next_vsi = ++i;
6830
6831         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6832         if (!vsi) {
6833                 ret = -ENOMEM;
6834                 goto unlock_pf;
6835         }
6836         vsi->type = type;
6837         vsi->back = pf;
6838         set_bit(__I40E_DOWN, &vsi->state);
6839         vsi->flags = 0;
6840         vsi->idx = vsi_idx;
6841         vsi->rx_itr_setting = pf->rx_itr_default;
6842         vsi->tx_itr_setting = pf->tx_itr_default;
6843         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6844                                 pf->rss_table_size : 64;
6845         vsi->netdev_registered = false;
6846         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6847         INIT_LIST_HEAD(&vsi->mac_filter_list);
6848         vsi->irqs_ready = false;
6849
6850         ret = i40e_set_num_rings_in_vsi(vsi);
6851         if (ret)
6852                 goto err_rings;
6853
6854         ret = i40e_vsi_alloc_arrays(vsi, true);
6855         if (ret)
6856                 goto err_rings;
6857
6858         /* Setup default MSIX irq handler for VSI */
6859         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6860
6861         pf->vsi[vsi_idx] = vsi;
6862         ret = vsi_idx;
6863         goto unlock_pf;
6864
6865 err_rings:
6866         pf->next_vsi = i - 1;
6867         kfree(vsi);
6868 unlock_pf:
6869         mutex_unlock(&pf->switch_mutex);
6870         return ret;
6871 }
6872
6873 /**
6874  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6875  * @type: VSI pointer
6876  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6877  *
6878  * On error: returns error code (negative)
6879  * On success: returns 0
6880  **/
6881 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6882 {
6883         /* free the ring and vector containers */
6884         if (free_qvectors) {
6885                 kfree(vsi->q_vectors);
6886                 vsi->q_vectors = NULL;
6887         }
6888         kfree(vsi->tx_rings);
6889         vsi->tx_rings = NULL;
6890         vsi->rx_rings = NULL;
6891 }
6892
6893 /**
6894  * i40e_vsi_clear - Deallocate the VSI provided
6895  * @vsi: the VSI being un-configured
6896  **/
6897 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6898 {
6899         struct i40e_pf *pf;
6900
6901         if (!vsi)
6902                 return 0;
6903
6904         if (!vsi->back)
6905                 goto free_vsi;
6906         pf = vsi->back;
6907
6908         mutex_lock(&pf->switch_mutex);
6909         if (!pf->vsi[vsi->idx]) {
6910                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6911                         vsi->idx, vsi->idx, vsi, vsi->type);
6912                 goto unlock_vsi;
6913         }
6914
6915         if (pf->vsi[vsi->idx] != vsi) {
6916                 dev_err(&pf->pdev->dev,
6917                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6918                         pf->vsi[vsi->idx]->idx,
6919                         pf->vsi[vsi->idx],
6920                         pf->vsi[vsi->idx]->type,
6921                         vsi->idx, vsi, vsi->type);
6922                 goto unlock_vsi;
6923         }
6924
6925         /* updates the PF for this cleared vsi */
6926         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6927         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6928
6929         i40e_vsi_free_arrays(vsi, true);
6930
6931         pf->vsi[vsi->idx] = NULL;
6932         if (vsi->idx < pf->next_vsi)
6933                 pf->next_vsi = vsi->idx;
6934
6935 unlock_vsi:
6936         mutex_unlock(&pf->switch_mutex);
6937 free_vsi:
6938         kfree(vsi);
6939
6940         return 0;
6941 }
6942
6943 /**
6944  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6945  * @vsi: the VSI being cleaned
6946  **/
6947 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6948 {
6949         int i;
6950
6951         if (vsi->tx_rings && vsi->tx_rings[0]) {
6952                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6953                         kfree_rcu(vsi->tx_rings[i], rcu);
6954                         vsi->tx_rings[i] = NULL;
6955                         vsi->rx_rings[i] = NULL;
6956                 }
6957         }
6958 }
6959
6960 /**
6961  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6962  * @vsi: the VSI being configured
6963  **/
6964 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6965 {
6966         struct i40e_ring *tx_ring, *rx_ring;
6967         struct i40e_pf *pf = vsi->back;
6968         int i;
6969
6970         /* Set basic values in the rings to be used later during open() */
6971         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6972                 /* allocate space for both Tx and Rx in one shot */
6973                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6974                 if (!tx_ring)
6975                         goto err_out;
6976
6977                 tx_ring->queue_index = i;
6978                 tx_ring->reg_idx = vsi->base_queue + i;
6979                 tx_ring->ring_active = false;
6980                 tx_ring->vsi = vsi;
6981                 tx_ring->netdev = vsi->netdev;
6982                 tx_ring->dev = &pf->pdev->dev;
6983                 tx_ring->count = vsi->num_desc;
6984                 tx_ring->size = 0;
6985                 tx_ring->dcb_tc = 0;
6986                 vsi->tx_rings[i] = tx_ring;
6987
6988                 rx_ring = &tx_ring[1];
6989                 rx_ring->queue_index = i;
6990                 rx_ring->reg_idx = vsi->base_queue + i;
6991                 rx_ring->ring_active = false;
6992                 rx_ring->vsi = vsi;
6993                 rx_ring->netdev = vsi->netdev;
6994                 rx_ring->dev = &pf->pdev->dev;
6995                 rx_ring->count = vsi->num_desc;
6996                 rx_ring->size = 0;
6997                 rx_ring->dcb_tc = 0;
6998                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6999                         set_ring_16byte_desc_enabled(rx_ring);
7000                 else
7001                         clear_ring_16byte_desc_enabled(rx_ring);
7002                 vsi->rx_rings[i] = rx_ring;
7003         }
7004
7005         return 0;
7006
7007 err_out:
7008         i40e_vsi_clear_rings(vsi);
7009         return -ENOMEM;
7010 }
7011
7012 /**
7013  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7014  * @pf: board private structure
7015  * @vectors: the number of MSI-X vectors to request
7016  *
7017  * Returns the number of vectors reserved, or error
7018  **/
7019 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7020 {
7021         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7022                                         I40E_MIN_MSIX, vectors);
7023         if (vectors < 0) {
7024                 dev_info(&pf->pdev->dev,
7025                          "MSI-X vector reservation failed: %d\n", vectors);
7026                 vectors = 0;
7027         }
7028
7029         return vectors;
7030 }
7031
7032 /**
7033  * i40e_init_msix - Setup the MSIX capability
7034  * @pf: board private structure
7035  *
7036  * Work with the OS to set up the MSIX vectors needed.
7037  *
7038  * Returns the number of vectors reserved or negative on failure
7039  **/
7040 static int i40e_init_msix(struct i40e_pf *pf)
7041 {
7042         struct i40e_hw *hw = &pf->hw;
7043         int vectors_left;
7044         int v_budget, i;
7045         int v_actual;
7046
7047         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7048                 return -ENODEV;
7049
7050         /* The number of vectors we'll request will be comprised of:
7051          *   - Add 1 for "other" cause for Admin Queue events, etc.
7052          *   - The number of LAN queue pairs
7053          *      - Queues being used for RSS.
7054          *              We don't need as many as max_rss_size vectors.
7055          *              use rss_size instead in the calculation since that
7056          *              is governed by number of cpus in the system.
7057          *      - assumes symmetric Tx/Rx pairing
7058          *   - The number of VMDq pairs
7059 #ifdef I40E_FCOE
7060          *   - The number of FCOE qps.
7061 #endif
7062          * Once we count this up, try the request.
7063          *
7064          * If we can't get what we want, we'll simplify to nearly nothing
7065          * and try again.  If that still fails, we punt.
7066          */
7067         vectors_left = hw->func_caps.num_msix_vectors;
7068         v_budget = 0;
7069
7070         /* reserve one vector for miscellaneous handler */
7071         if (vectors_left) {
7072                 v_budget++;
7073                 vectors_left--;
7074         }
7075
7076         /* reserve vectors for the main PF traffic queues */
7077         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7078         vectors_left -= pf->num_lan_msix;
7079         v_budget += pf->num_lan_msix;
7080
7081         /* reserve one vector for sideband flow director */
7082         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7083                 if (vectors_left) {
7084                         v_budget++;
7085                         vectors_left--;
7086                 } else {
7087                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7088                 }
7089         }
7090
7091 #ifdef I40E_FCOE
7092         /* can we reserve enough for FCoE? */
7093         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7094                 if (!vectors_left)
7095                         pf->num_fcoe_msix = 0;
7096                 else if (vectors_left >= pf->num_fcoe_qps)
7097                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7098                 else
7099                         pf->num_fcoe_msix = 1;
7100                 v_budget += pf->num_fcoe_msix;
7101                 vectors_left -= pf->num_fcoe_msix;
7102         }
7103
7104 #endif
7105         /* any vectors left over go for VMDq support */
7106         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7107                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7108                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7109
7110                 /* if we're short on vectors for what's desired, we limit
7111                  * the queues per vmdq.  If this is still more than are
7112                  * available, the user will need to change the number of
7113                  * queues/vectors used by the PF later with the ethtool
7114                  * channels command
7115                  */
7116                 if (vmdq_vecs < vmdq_vecs_wanted)
7117                         pf->num_vmdq_qps = 1;
7118                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7119
7120                 v_budget += vmdq_vecs;
7121                 vectors_left -= vmdq_vecs;
7122         }
7123
7124         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7125                                    GFP_KERNEL);
7126         if (!pf->msix_entries)
7127                 return -ENOMEM;
7128
7129         for (i = 0; i < v_budget; i++)
7130                 pf->msix_entries[i].entry = i;
7131         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7132
7133         if (v_actual != v_budget) {
7134                 /* If we have limited resources, we will start with no vectors
7135                  * for the special features and then allocate vectors to some
7136                  * of these features based on the policy and at the end disable
7137                  * the features that did not get any vectors.
7138                  */
7139 #ifdef I40E_FCOE
7140                 pf->num_fcoe_qps = 0;
7141                 pf->num_fcoe_msix = 0;
7142 #endif
7143                 pf->num_vmdq_msix = 0;
7144         }
7145
7146         if (v_actual < I40E_MIN_MSIX) {
7147                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7148                 kfree(pf->msix_entries);
7149                 pf->msix_entries = NULL;
7150                 return -ENODEV;
7151
7152         } else if (v_actual == I40E_MIN_MSIX) {
7153                 /* Adjust for minimal MSIX use */
7154                 pf->num_vmdq_vsis = 0;
7155                 pf->num_vmdq_qps = 0;
7156                 pf->num_lan_qps = 1;
7157                 pf->num_lan_msix = 1;
7158
7159         } else if (v_actual != v_budget) {
7160                 int vec;
7161
7162                 /* reserve the misc vector */
7163                 vec = v_actual - 1;
7164
7165                 /* Scale vector usage down */
7166                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7167                 pf->num_vmdq_vsis = 1;
7168                 pf->num_vmdq_qps = 1;
7169                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7170
7171                 /* partition out the remaining vectors */
7172                 switch (vec) {
7173                 case 2:
7174                         pf->num_lan_msix = 1;
7175                         break;
7176                 case 3:
7177 #ifdef I40E_FCOE
7178                         /* give one vector to FCoE */
7179                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7180                                 pf->num_lan_msix = 1;
7181                                 pf->num_fcoe_msix = 1;
7182                         }
7183 #else
7184                         pf->num_lan_msix = 2;
7185 #endif
7186                         break;
7187                 default:
7188 #ifdef I40E_FCOE
7189                         /* give one vector to FCoE */
7190                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7191                                 pf->num_fcoe_msix = 1;
7192                                 vec--;
7193                         }
7194 #endif
7195                         /* give the rest to the PF */
7196                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7197                         break;
7198                 }
7199         }
7200
7201         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7202             (pf->num_vmdq_msix == 0)) {
7203                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7204                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7205         }
7206 #ifdef I40E_FCOE
7207
7208         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7209                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7210                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7211         }
7212 #endif
7213         return v_actual;
7214 }
7215
7216 /**
7217  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7218  * @vsi: the VSI being configured
7219  * @v_idx: index of the vector in the vsi struct
7220  *
7221  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7222  **/
7223 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7224 {
7225         struct i40e_q_vector *q_vector;
7226
7227         /* allocate q_vector */
7228         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7229         if (!q_vector)
7230                 return -ENOMEM;
7231
7232         q_vector->vsi = vsi;
7233         q_vector->v_idx = v_idx;
7234         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7235         if (vsi->netdev)
7236                 netif_napi_add(vsi->netdev, &q_vector->napi,
7237                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7238
7239         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7240         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7241
7242         /* tie q_vector and vsi together */
7243         vsi->q_vectors[v_idx] = q_vector;
7244
7245         return 0;
7246 }
7247
7248 /**
7249  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7250  * @vsi: the VSI being configured
7251  *
7252  * We allocate one q_vector per queue interrupt.  If allocation fails we
7253  * return -ENOMEM.
7254  **/
7255 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7256 {
7257         struct i40e_pf *pf = vsi->back;
7258         int v_idx, num_q_vectors;
7259         int err;
7260
7261         /* if not MSIX, give the one vector only to the LAN VSI */
7262         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7263                 num_q_vectors = vsi->num_q_vectors;
7264         else if (vsi == pf->vsi[pf->lan_vsi])
7265                 num_q_vectors = 1;
7266         else
7267                 return -EINVAL;
7268
7269         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7270                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7271                 if (err)
7272                         goto err_out;
7273         }
7274
7275         return 0;
7276
7277 err_out:
7278         while (v_idx--)
7279                 i40e_free_q_vector(vsi, v_idx);
7280
7281         return err;
7282 }
7283
7284 /**
7285  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7286  * @pf: board private structure to initialize
7287  **/
7288 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7289 {
7290         int vectors = 0;
7291         ssize_t size;
7292
7293         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7294                 vectors = i40e_init_msix(pf);
7295                 if (vectors < 0) {
7296                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7297 #ifdef I40E_FCOE
7298                                        I40E_FLAG_FCOE_ENABLED   |
7299 #endif
7300                                        I40E_FLAG_RSS_ENABLED    |
7301                                        I40E_FLAG_DCB_CAPABLE    |
7302                                        I40E_FLAG_SRIOV_ENABLED  |
7303                                        I40E_FLAG_FD_SB_ENABLED  |
7304                                        I40E_FLAG_FD_ATR_ENABLED |
7305                                        I40E_FLAG_VMDQ_ENABLED);
7306
7307                         /* rework the queue expectations without MSIX */
7308                         i40e_determine_queue_usage(pf);
7309                 }
7310         }
7311
7312         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7313             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7314                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7315                 vectors = pci_enable_msi(pf->pdev);
7316                 if (vectors < 0) {
7317                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7318                                  vectors);
7319                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7320                 }
7321                 vectors = 1;  /* one MSI or Legacy vector */
7322         }
7323
7324         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7325                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7326
7327         /* set up vector assignment tracking */
7328         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7329         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7330         pf->irq_pile->num_entries = vectors;
7331         pf->irq_pile->search_hint = 0;
7332
7333         /* track first vector for misc interrupts */
7334         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7335 }
7336
7337 /**
7338  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7339  * @pf: board private structure
7340  *
7341  * This sets up the handler for MSIX 0, which is used to manage the
7342  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7343  * when in MSI or Legacy interrupt mode.
7344  **/
7345 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7346 {
7347         struct i40e_hw *hw = &pf->hw;
7348         int err = 0;
7349
7350         /* Only request the irq if this is the first time through, and
7351          * not when we're rebuilding after a Reset
7352          */
7353         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7354                 err = request_irq(pf->msix_entries[0].vector,
7355                                   i40e_intr, 0, pf->int_name, pf);
7356                 if (err) {
7357                         dev_info(&pf->pdev->dev,
7358                                  "request_irq for %s failed: %d\n",
7359                                  pf->int_name, err);
7360                         return -EFAULT;
7361                 }
7362         }
7363
7364         i40e_enable_misc_int_causes(pf);
7365
7366         /* associate no queues to the misc vector */
7367         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7368         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7369
7370         i40e_flush(hw);
7371
7372         i40e_irq_dynamic_enable_icr0(pf);
7373
7374         return err;
7375 }
7376
7377 /**
7378  * i40e_config_rss - Prepare for RSS if used
7379  * @pf: board private structure
7380  **/
7381 static int i40e_config_rss(struct i40e_pf *pf)
7382 {
7383         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7384         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7385         struct i40e_hw *hw = &pf->hw;
7386         u32 lut = 0;
7387         int i, j;
7388         u64 hena;
7389         u32 reg_val;
7390
7391         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7392         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7393                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7394
7395         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7396         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7397                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7398         hena |= I40E_DEFAULT_RSS_HENA;
7399         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7400         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7401
7402         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7403
7404         /* Check capability and Set table size and register per hw expectation*/
7405         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7406         if (pf->rss_table_size == 512)
7407                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7408         else
7409                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7410         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7411
7412         /* Populate the LUT with max no. of queues in round robin fashion */
7413         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7414
7415                 /* The assumption is that lan qp count will be the highest
7416                  * qp count for any PF VSI that needs RSS.
7417                  * If multiple VSIs need RSS support, all the qp counts
7418                  * for those VSIs should be a power of 2 for RSS to work.
7419                  * If LAN VSI is the only consumer for RSS then this requirement
7420                  * is not necessary.
7421                  */
7422                 if (j == vsi->rss_size)
7423                         j = 0;
7424                 /* lut = 4-byte sliding window of 4 lut entries */
7425                 lut = (lut << 8) | (j &
7426                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7427                 /* On i = 3, we have 4 entries in lut; write to the register */
7428                 if ((i & 3) == 3)
7429                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7430         }
7431         i40e_flush(hw);
7432
7433         return 0;
7434 }
7435
7436 /**
7437  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7438  * @pf: board private structure
7439  * @queue_count: the requested queue count for rss.
7440  *
7441  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7442  * count which may be different from the requested queue count.
7443  **/
7444 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7445 {
7446         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7447         int new_rss_size;
7448
7449         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7450                 return 0;
7451
7452         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7453
7454         if (queue_count != vsi->num_queue_pairs) {
7455                 vsi->req_queue_pairs = queue_count;
7456                 i40e_prep_for_reset(pf);
7457
7458                 pf->rss_size = new_rss_size;
7459
7460                 i40e_reset_and_rebuild(pf, true);
7461                 i40e_config_rss(pf);
7462         }
7463         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7464         return pf->rss_size;
7465 }
7466
7467 /**
7468  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7469  * @pf: board private structure
7470  **/
7471 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7472 {
7473         i40e_status status;
7474         bool min_valid, max_valid;
7475         u32 max_bw, min_bw;
7476
7477         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7478                                            &min_valid, &max_valid);
7479
7480         if (!status) {
7481                 if (min_valid)
7482                         pf->npar_min_bw = min_bw;
7483                 if (max_valid)
7484                         pf->npar_max_bw = max_bw;
7485         }
7486
7487         return status;
7488 }
7489
7490 /**
7491  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7492  * @pf: board private structure
7493  **/
7494 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7495 {
7496         struct i40e_aqc_configure_partition_bw_data bw_data;
7497         i40e_status status;
7498
7499         /* Set the valid bit for this PF */
7500         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7501         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7502         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7503
7504         /* Set the new bandwidths */
7505         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7506
7507         return status;
7508 }
7509
7510 /**
7511  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7512  * @pf: board private structure
7513  **/
7514 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7515 {
7516         /* Commit temporary BW setting to permanent NVM image */
7517         enum i40e_admin_queue_err last_aq_status;
7518         i40e_status ret;
7519         u16 nvm_word;
7520
7521         if (pf->hw.partition_id != 1) {
7522                 dev_info(&pf->pdev->dev,
7523                          "Commit BW only works on partition 1! This is partition %d",
7524                          pf->hw.partition_id);
7525                 ret = I40E_NOT_SUPPORTED;
7526                 goto bw_commit_out;
7527         }
7528
7529         /* Acquire NVM for read access */
7530         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7531         last_aq_status = pf->hw.aq.asq_last_status;
7532         if (ret) {
7533                 dev_info(&pf->pdev->dev,
7534                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7535                          ret, last_aq_status);
7536                 goto bw_commit_out;
7537         }
7538
7539         /* Read word 0x10 of NVM - SW compatibility word 1 */
7540         ret = i40e_aq_read_nvm(&pf->hw,
7541                                I40E_SR_NVM_CONTROL_WORD,
7542                                0x10, sizeof(nvm_word), &nvm_word,
7543                                false, NULL);
7544         /* Save off last admin queue command status before releasing
7545          * the NVM
7546          */
7547         last_aq_status = pf->hw.aq.asq_last_status;
7548         i40e_release_nvm(&pf->hw);
7549         if (ret) {
7550                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7551                          ret, last_aq_status);
7552                 goto bw_commit_out;
7553         }
7554
7555         /* Wait a bit for NVM release to complete */
7556         msleep(50);
7557
7558         /* Acquire NVM for write access */
7559         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7560         last_aq_status = pf->hw.aq.asq_last_status;
7561         if (ret) {
7562                 dev_info(&pf->pdev->dev,
7563                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7564                          ret, last_aq_status);
7565                 goto bw_commit_out;
7566         }
7567         /* Write it back out unchanged to initiate update NVM,
7568          * which will force a write of the shadow (alt) RAM to
7569          * the NVM - thus storing the bandwidth values permanently.
7570          */
7571         ret = i40e_aq_update_nvm(&pf->hw,
7572                                  I40E_SR_NVM_CONTROL_WORD,
7573                                  0x10, sizeof(nvm_word),
7574                                  &nvm_word, true, NULL);
7575         /* Save off last admin queue command status before releasing
7576          * the NVM
7577          */
7578         last_aq_status = pf->hw.aq.asq_last_status;
7579         i40e_release_nvm(&pf->hw);
7580         if (ret)
7581                 dev_info(&pf->pdev->dev,
7582                          "BW settings NOT SAVED, err %d aq_err %d\n",
7583                          ret, last_aq_status);
7584 bw_commit_out:
7585
7586         return ret;
7587 }
7588
7589 /**
7590  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7591  * @pf: board private structure to initialize
7592  *
7593  * i40e_sw_init initializes the Adapter private data structure.
7594  * Fields are initialized based on PCI device information and
7595  * OS network device settings (MTU size).
7596  **/
7597 static int i40e_sw_init(struct i40e_pf *pf)
7598 {
7599         int err = 0;
7600         int size;
7601
7602         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7603                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7604         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7605         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7606                 if (I40E_DEBUG_USER & debug)
7607                         pf->hw.debug_mask = debug;
7608                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7609                                                 I40E_DEFAULT_MSG_ENABLE);
7610         }
7611
7612         /* Set default capability flags */
7613         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7614                     I40E_FLAG_MSI_ENABLED     |
7615                     I40E_FLAG_MSIX_ENABLED;
7616
7617         if (iommu_present(&pci_bus_type))
7618                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7619         else
7620                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7621
7622         /* Set default ITR */
7623         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7624         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7625
7626         /* Depending on PF configurations, it is possible that the RSS
7627          * maximum might end up larger than the available queues
7628          */
7629         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7630         pf->rss_size = 1;
7631         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7632         pf->rss_size_max = min_t(int, pf->rss_size_max,
7633                                  pf->hw.func_caps.num_tx_qp);
7634         if (pf->hw.func_caps.rss) {
7635                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7636                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7637         }
7638
7639         /* MFP mode enabled */
7640         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7641                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7642                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7643                 if (i40e_get_npar_bw_setting(pf))
7644                         dev_warn(&pf->pdev->dev,
7645                                  "Could not get NPAR bw settings\n");
7646                 else
7647                         dev_info(&pf->pdev->dev,
7648                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7649                                  pf->npar_min_bw, pf->npar_max_bw);
7650         }
7651
7652         /* FW/NVM is not yet fixed in this regard */
7653         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7654             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7655                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7656                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7657                 /* Setup a counter for fd_atr per PF */
7658                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7659                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7660                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7661                         /* Setup a counter for fd_sb per PF */
7662                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7663                 } else {
7664                         dev_info(&pf->pdev->dev,
7665                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7666                 }
7667                 pf->fdir_pf_filter_count =
7668                                  pf->hw.func_caps.fd_filters_guaranteed;
7669                 pf->hw.fdir_shared_filter_count =
7670                                  pf->hw.func_caps.fd_filters_best_effort;
7671         }
7672
7673         if (pf->hw.func_caps.vmdq) {
7674                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7675                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7676                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7677         }
7678
7679 #ifdef I40E_FCOE
7680         err = i40e_init_pf_fcoe(pf);
7681         if (err)
7682                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7683
7684 #endif /* I40E_FCOE */
7685 #ifdef CONFIG_PCI_IOV
7686         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7687                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7688                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7689                 pf->num_req_vfs = min_t(int,
7690                                         pf->hw.func_caps.num_vfs,
7691                                         I40E_MAX_VF_COUNT);
7692         }
7693 #endif /* CONFIG_PCI_IOV */
7694         pf->eeprom_version = 0xDEAD;
7695         pf->lan_veb = I40E_NO_VEB;
7696         pf->lan_vsi = I40E_NO_VSI;
7697
7698         /* set up queue assignment tracking */
7699         size = sizeof(struct i40e_lump_tracking)
7700                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7701         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7702         if (!pf->qp_pile) {
7703                 err = -ENOMEM;
7704                 goto sw_init_done;
7705         }
7706         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7707         pf->qp_pile->search_hint = 0;
7708
7709         pf->tx_timeout_recovery_level = 1;
7710
7711         mutex_init(&pf->switch_mutex);
7712
7713         /* If NPAR is enabled nudge the Tx scheduler */
7714         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7715                 i40e_set_npar_bw_setting(pf);
7716
7717 sw_init_done:
7718         return err;
7719 }
7720
7721 /**
7722  * i40e_set_ntuple - set the ntuple feature flag and take action
7723  * @pf: board private structure to initialize
7724  * @features: the feature set that the stack is suggesting
7725  *
7726  * returns a bool to indicate if reset needs to happen
7727  **/
7728 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7729 {
7730         bool need_reset = false;
7731
7732         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7733          * the state changed, we need to reset.
7734          */
7735         if (features & NETIF_F_NTUPLE) {
7736                 /* Enable filters and mark for reset */
7737                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7738                         need_reset = true;
7739                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7740         } else {
7741                 /* turn off filters, mark for reset and clear SW filter list */
7742                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7743                         need_reset = true;
7744                         i40e_fdir_filter_exit(pf);
7745                 }
7746                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7747                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7748                 /* reset fd counters */
7749                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7750                 pf->fdir_pf_active_filters = 0;
7751                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7752                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7753                 /* if ATR was auto disabled it can be re-enabled. */
7754                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7755                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7756                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7757         }
7758         return need_reset;
7759 }
7760
7761 /**
7762  * i40e_set_features - set the netdev feature flags
7763  * @netdev: ptr to the netdev being adjusted
7764  * @features: the feature set that the stack is suggesting
7765  **/
7766 static int i40e_set_features(struct net_device *netdev,
7767                              netdev_features_t features)
7768 {
7769         struct i40e_netdev_priv *np = netdev_priv(netdev);
7770         struct i40e_vsi *vsi = np->vsi;
7771         struct i40e_pf *pf = vsi->back;
7772         bool need_reset;
7773
7774         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7775                 i40e_vlan_stripping_enable(vsi);
7776         else
7777                 i40e_vlan_stripping_disable(vsi);
7778
7779         need_reset = i40e_set_ntuple(pf, features);
7780
7781         if (need_reset)
7782                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7783
7784         return 0;
7785 }
7786
7787 #ifdef CONFIG_I40E_VXLAN
7788 /**
7789  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7790  * @pf: board private structure
7791  * @port: The UDP port to look up
7792  *
7793  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7794  **/
7795 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7796 {
7797         u8 i;
7798
7799         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7800                 if (pf->vxlan_ports[i] == port)
7801                         return i;
7802         }
7803
7804         return i;
7805 }
7806
7807 /**
7808  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7809  * @netdev: This physical port's netdev
7810  * @sa_family: Socket Family that VXLAN is notifying us about
7811  * @port: New UDP port number that VXLAN started listening to
7812  **/
7813 static void i40e_add_vxlan_port(struct net_device *netdev,
7814                                 sa_family_t sa_family, __be16 port)
7815 {
7816         struct i40e_netdev_priv *np = netdev_priv(netdev);
7817         struct i40e_vsi *vsi = np->vsi;
7818         struct i40e_pf *pf = vsi->back;
7819         u8 next_idx;
7820         u8 idx;
7821
7822         if (sa_family == AF_INET6)
7823                 return;
7824
7825         idx = i40e_get_vxlan_port_idx(pf, port);
7826
7827         /* Check if port already exists */
7828         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7829                 netdev_info(netdev, "vxlan port %d already offloaded\n",
7830                             ntohs(port));
7831                 return;
7832         }
7833
7834         /* Now check if there is space to add the new port */
7835         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7836
7837         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7838                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
7839                             ntohs(port));
7840                 return;
7841         }
7842
7843         /* New port: add it and mark its index in the bitmap */
7844         pf->vxlan_ports[next_idx] = port;
7845         pf->pending_vxlan_bitmap |= (1 << next_idx);
7846         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7847
7848         dev_info(&pf->pdev->dev, "adding vxlan port %d\n", ntohs(port));
7849 }
7850
7851 /**
7852  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7853  * @netdev: This physical port's netdev
7854  * @sa_family: Socket Family that VXLAN is notifying us about
7855  * @port: UDP port number that VXLAN stopped listening to
7856  **/
7857 static void i40e_del_vxlan_port(struct net_device *netdev,
7858                                 sa_family_t sa_family, __be16 port)
7859 {
7860         struct i40e_netdev_priv *np = netdev_priv(netdev);
7861         struct i40e_vsi *vsi = np->vsi;
7862         struct i40e_pf *pf = vsi->back;
7863         u8 idx;
7864
7865         if (sa_family == AF_INET6)
7866                 return;
7867
7868         idx = i40e_get_vxlan_port_idx(pf, port);
7869
7870         /* Check if port already exists */
7871         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7872                 /* if port exists, set it to 0 (mark for deletion)
7873                  * and make it pending
7874                  */
7875                 pf->vxlan_ports[idx] = 0;
7876                 pf->pending_vxlan_bitmap |= (1 << idx);
7877                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7878
7879                 dev_info(&pf->pdev->dev, "deleting vxlan port %d\n",
7880                          ntohs(port));
7881         } else {
7882                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
7883                             ntohs(port));
7884         }
7885 }
7886
7887 #endif
7888 static int i40e_get_phys_port_id(struct net_device *netdev,
7889                                  struct netdev_phys_item_id *ppid)
7890 {
7891         struct i40e_netdev_priv *np = netdev_priv(netdev);
7892         struct i40e_pf *pf = np->vsi->back;
7893         struct i40e_hw *hw = &pf->hw;
7894
7895         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7896                 return -EOPNOTSUPP;
7897
7898         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7899         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7900
7901         return 0;
7902 }
7903
7904 /**
7905  * i40e_ndo_fdb_add - add an entry to the hardware database
7906  * @ndm: the input from the stack
7907  * @tb: pointer to array of nladdr (unused)
7908  * @dev: the net device pointer
7909  * @addr: the MAC address entry being added
7910  * @flags: instructions from stack about fdb operation
7911  */
7912 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7913                             struct net_device *dev,
7914                             const unsigned char *addr, u16 vid,
7915                             u16 flags)
7916 {
7917         struct i40e_netdev_priv *np = netdev_priv(dev);
7918         struct i40e_pf *pf = np->vsi->back;
7919         int err = 0;
7920
7921         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7922                 return -EOPNOTSUPP;
7923
7924         if (vid) {
7925                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7926                 return -EINVAL;
7927         }
7928
7929         /* Hardware does not support aging addresses so if a
7930          * ndm_state is given only allow permanent addresses
7931          */
7932         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7933                 netdev_info(dev, "FDB only supports static addresses\n");
7934                 return -EINVAL;
7935         }
7936
7937         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7938                 err = dev_uc_add_excl(dev, addr);
7939         else if (is_multicast_ether_addr(addr))
7940                 err = dev_mc_add_excl(dev, addr);
7941         else
7942                 err = -EINVAL;
7943
7944         /* Only return duplicate errors if NLM_F_EXCL is set */
7945         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7946                 err = 0;
7947
7948         return err;
7949 }
7950
7951 #ifdef HAVE_BRIDGE_ATTRIBS
7952 /**
7953  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7954  * @dev: the netdev being configured
7955  * @nlh: RTNL message
7956  *
7957  * Inserts a new hardware bridge if not already created and
7958  * enables the bridging mode requested (VEB or VEPA). If the
7959  * hardware bridge has already been inserted and the request
7960  * is to change the mode then that requires a PF reset to
7961  * allow rebuild of the components with required hardware
7962  * bridge mode enabled.
7963  **/
7964 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7965                                    struct nlmsghdr *nlh)
7966 {
7967         struct i40e_netdev_priv *np = netdev_priv(dev);
7968         struct i40e_vsi *vsi = np->vsi;
7969         struct i40e_pf *pf = vsi->back;
7970         struct i40e_veb *veb = NULL;
7971         struct nlattr *attr, *br_spec;
7972         int i, rem;
7973
7974         /* Only for PF VSI for now */
7975         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7976                 return -EOPNOTSUPP;
7977
7978         /* Find the HW bridge for PF VSI */
7979         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7980                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7981                         veb = pf->veb[i];
7982         }
7983
7984         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
7985
7986         nla_for_each_nested(attr, br_spec, rem) {
7987                 __u16 mode;
7988
7989                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
7990                         continue;
7991
7992                 mode = nla_get_u16(attr);
7993                 if ((mode != BRIDGE_MODE_VEPA) &&
7994                     (mode != BRIDGE_MODE_VEB))
7995                         return -EINVAL;
7996
7997                 /* Insert a new HW bridge */
7998                 if (!veb) {
7999                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8000                                              vsi->tc_config.enabled_tc);
8001                         if (veb) {
8002                                 veb->bridge_mode = mode;
8003                                 i40e_config_bridge_mode(veb);
8004                         } else {
8005                                 /* No Bridge HW offload available */
8006                                 return -ENOENT;
8007                         }
8008                         break;
8009                 } else if (mode != veb->bridge_mode) {
8010                         /* Existing HW bridge but different mode needs reset */
8011                         veb->bridge_mode = mode;
8012                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
8013                         break;
8014                 }
8015         }
8016
8017         return 0;
8018 }
8019
8020 /**
8021  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8022  * @skb: skb buff
8023  * @pid: process id
8024  * @seq: RTNL message seq #
8025  * @dev: the netdev being configured
8026  * @filter_mask: unused
8027  *
8028  * Return the mode in which the hardware bridge is operating in
8029  * i.e VEB or VEPA.
8030  **/
8031 #ifdef HAVE_BRIDGE_FILTER
8032 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8033                                    struct net_device *dev,
8034                                    u32 __always_unused filter_mask)
8035 #else
8036 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8037                                    struct net_device *dev)
8038 #endif /* HAVE_BRIDGE_FILTER */
8039 {
8040         struct i40e_netdev_priv *np = netdev_priv(dev);
8041         struct i40e_vsi *vsi = np->vsi;
8042         struct i40e_pf *pf = vsi->back;
8043         struct i40e_veb *veb = NULL;
8044         int i;
8045
8046         /* Only for PF VSI for now */
8047         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8048                 return -EOPNOTSUPP;
8049
8050         /* Find the HW bridge for the PF VSI */
8051         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8052                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8053                         veb = pf->veb[i];
8054         }
8055
8056         if (!veb)
8057                 return 0;
8058
8059         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
8060 }
8061 #endif /* HAVE_BRIDGE_ATTRIBS */
8062
8063 static const struct net_device_ops i40e_netdev_ops = {
8064         .ndo_open               = i40e_open,
8065         .ndo_stop               = i40e_close,
8066         .ndo_start_xmit         = i40e_lan_xmit_frame,
8067         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8068         .ndo_set_rx_mode        = i40e_set_rx_mode,
8069         .ndo_validate_addr      = eth_validate_addr,
8070         .ndo_set_mac_address    = i40e_set_mac,
8071         .ndo_change_mtu         = i40e_change_mtu,
8072         .ndo_do_ioctl           = i40e_ioctl,
8073         .ndo_tx_timeout         = i40e_tx_timeout,
8074         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8075         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8076 #ifdef CONFIG_NET_POLL_CONTROLLER
8077         .ndo_poll_controller    = i40e_netpoll,
8078 #endif
8079         .ndo_setup_tc           = i40e_setup_tc,
8080 #ifdef I40E_FCOE
8081         .ndo_fcoe_enable        = i40e_fcoe_enable,
8082         .ndo_fcoe_disable       = i40e_fcoe_disable,
8083 #endif
8084         .ndo_set_features       = i40e_set_features,
8085         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8086         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8087         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8088         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8089         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8090         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8091 #ifdef CONFIG_I40E_VXLAN
8092         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8093         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8094 #endif
8095         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8096         .ndo_fdb_add            = i40e_ndo_fdb_add,
8097 #ifdef HAVE_BRIDGE_ATTRIBS
8098         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8099         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8100 #endif /* HAVE_BRIDGE_ATTRIBS */
8101 };
8102
8103 /**
8104  * i40e_config_netdev - Setup the netdev flags
8105  * @vsi: the VSI being configured
8106  *
8107  * Returns 0 on success, negative value on failure
8108  **/
8109 static int i40e_config_netdev(struct i40e_vsi *vsi)
8110 {
8111         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8112         struct i40e_pf *pf = vsi->back;
8113         struct i40e_hw *hw = &pf->hw;
8114         struct i40e_netdev_priv *np;
8115         struct net_device *netdev;
8116         u8 mac_addr[ETH_ALEN];
8117         int etherdev_size;
8118
8119         etherdev_size = sizeof(struct i40e_netdev_priv);
8120         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8121         if (!netdev)
8122                 return -ENOMEM;
8123
8124         vsi->netdev = netdev;
8125         np = netdev_priv(netdev);
8126         np->vsi = vsi;
8127
8128         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8129                                   NETIF_F_GSO_UDP_TUNNEL |
8130                                   NETIF_F_TSO;
8131
8132         netdev->features = NETIF_F_SG                  |
8133                            NETIF_F_IP_CSUM             |
8134                            NETIF_F_SCTP_CSUM           |
8135                            NETIF_F_HIGHDMA             |
8136                            NETIF_F_GSO_UDP_TUNNEL      |
8137                            NETIF_F_HW_VLAN_CTAG_TX     |
8138                            NETIF_F_HW_VLAN_CTAG_RX     |
8139                            NETIF_F_HW_VLAN_CTAG_FILTER |
8140                            NETIF_F_IPV6_CSUM           |
8141                            NETIF_F_TSO                 |
8142                            NETIF_F_TSO_ECN             |
8143                            NETIF_F_TSO6                |
8144                            NETIF_F_RXCSUM              |
8145                            NETIF_F_RXHASH              |
8146                            0;
8147
8148         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8149                 netdev->features |= NETIF_F_NTUPLE;
8150
8151         /* copy netdev features into list of user selectable features */
8152         netdev->hw_features |= netdev->features;
8153
8154         if (vsi->type == I40E_VSI_MAIN) {
8155                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8156                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8157                 /* The following steps are necessary to prevent reception
8158                  * of tagged packets - some older NVM configurations load a
8159                  * default a MAC-VLAN filter that accepts any tagged packet
8160                  * which must be replaced by a normal filter.
8161                  */
8162                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8163                         i40e_add_filter(vsi, mac_addr,
8164                                         I40E_VLAN_ANY, false, true);
8165         } else {
8166                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8167                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8168                          pf->vsi[pf->lan_vsi]->netdev->name);
8169                 random_ether_addr(mac_addr);
8170                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8171         }
8172         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8173
8174         ether_addr_copy(netdev->dev_addr, mac_addr);
8175         ether_addr_copy(netdev->perm_addr, mac_addr);
8176         /* vlan gets same features (except vlan offload)
8177          * after any tweaks for specific VSI types
8178          */
8179         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8180                                                      NETIF_F_HW_VLAN_CTAG_RX |
8181                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8182         netdev->priv_flags |= IFF_UNICAST_FLT;
8183         netdev->priv_flags |= IFF_SUPP_NOFCS;
8184         /* Setup netdev TC information */
8185         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8186
8187         netdev->netdev_ops = &i40e_netdev_ops;
8188         netdev->watchdog_timeo = 5 * HZ;
8189         i40e_set_ethtool_ops(netdev);
8190 #ifdef I40E_FCOE
8191         i40e_fcoe_config_netdev(netdev, vsi);
8192 #endif
8193
8194         return 0;
8195 }
8196
8197 /**
8198  * i40e_vsi_delete - Delete a VSI from the switch
8199  * @vsi: the VSI being removed
8200  *
8201  * Returns 0 on success, negative value on failure
8202  **/
8203 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8204 {
8205         /* remove default VSI is not allowed */
8206         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8207                 return;
8208
8209         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8210 }
8211
8212 /**
8213  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8214  * @vsi: the VSI being queried
8215  *
8216  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8217  **/
8218 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8219 {
8220         struct i40e_veb *veb;
8221         struct i40e_pf *pf = vsi->back;
8222
8223         /* Uplink is not a bridge so default to VEB */
8224         if (vsi->veb_idx == I40E_NO_VEB)
8225                 return 1;
8226
8227         veb = pf->veb[vsi->veb_idx];
8228         /* Uplink is a bridge in VEPA mode */
8229         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8230                 return 0;
8231
8232         /* Uplink is a bridge in VEB mode */
8233         return 1;
8234 }
8235
8236 /**
8237  * i40e_add_vsi - Add a VSI to the switch
8238  * @vsi: the VSI being configured
8239  *
8240  * This initializes a VSI context depending on the VSI type to be added and
8241  * passes it down to the add_vsi aq command.
8242  **/
8243 static int i40e_add_vsi(struct i40e_vsi *vsi)
8244 {
8245         int ret = -ENODEV;
8246         struct i40e_mac_filter *f, *ftmp;
8247         struct i40e_pf *pf = vsi->back;
8248         struct i40e_hw *hw = &pf->hw;
8249         struct i40e_vsi_context ctxt;
8250         u8 enabled_tc = 0x1; /* TC0 enabled */
8251         int f_count = 0;
8252
8253         memset(&ctxt, 0, sizeof(ctxt));
8254         switch (vsi->type) {
8255         case I40E_VSI_MAIN:
8256                 /* The PF's main VSI is already setup as part of the
8257                  * device initialization, so we'll not bother with
8258                  * the add_vsi call, but we will retrieve the current
8259                  * VSI context.
8260                  */
8261                 ctxt.seid = pf->main_vsi_seid;
8262                 ctxt.pf_num = pf->hw.pf_id;
8263                 ctxt.vf_num = 0;
8264                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8265                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8266                 if (ret) {
8267                         dev_info(&pf->pdev->dev,
8268                                  "couldn't get PF vsi config, err %d, aq_err %d\n",
8269                                  ret, pf->hw.aq.asq_last_status);
8270                         return -ENOENT;
8271                 }
8272                 vsi->info = ctxt.info;
8273                 vsi->info.valid_sections = 0;
8274
8275                 vsi->seid = ctxt.seid;
8276                 vsi->id = ctxt.vsi_number;
8277
8278                 enabled_tc = i40e_pf_get_tc_map(pf);
8279
8280                 /* MFP mode setup queue map and update VSI */
8281                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8282                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8283                         memset(&ctxt, 0, sizeof(ctxt));
8284                         ctxt.seid = pf->main_vsi_seid;
8285                         ctxt.pf_num = pf->hw.pf_id;
8286                         ctxt.vf_num = 0;
8287                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8288                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8289                         if (ret) {
8290                                 dev_info(&pf->pdev->dev,
8291                                          "update vsi failed, aq_err=%d\n",
8292                                          pf->hw.aq.asq_last_status);
8293                                 ret = -ENOENT;
8294                                 goto err;
8295                         }
8296                         /* update the local VSI info queue map */
8297                         i40e_vsi_update_queue_map(vsi, &ctxt);
8298                         vsi->info.valid_sections = 0;
8299                 } else {
8300                         /* Default/Main VSI is only enabled for TC0
8301                          * reconfigure it to enable all TCs that are
8302                          * available on the port in SFP mode.
8303                          * For MFP case the iSCSI PF would use this
8304                          * flow to enable LAN+iSCSI TC.
8305                          */
8306                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8307                         if (ret) {
8308                                 dev_info(&pf->pdev->dev,
8309                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8310                                          enabled_tc, ret,
8311                                          pf->hw.aq.asq_last_status);
8312                                 ret = -ENOENT;
8313                         }
8314                 }
8315                 break;
8316
8317         case I40E_VSI_FDIR:
8318                 ctxt.pf_num = hw->pf_id;
8319                 ctxt.vf_num = 0;
8320                 ctxt.uplink_seid = vsi->uplink_seid;
8321                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8322                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8323                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8324                         ctxt.info.valid_sections |=
8325                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8326                         ctxt.info.switch_id =
8327                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8328                 }
8329                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8330                 break;
8331
8332         case I40E_VSI_VMDQ2:
8333                 ctxt.pf_num = hw->pf_id;
8334                 ctxt.vf_num = 0;
8335                 ctxt.uplink_seid = vsi->uplink_seid;
8336                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8337                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8338
8339                 /* This VSI is connected to VEB so the switch_id
8340                  * should be set to zero by default.
8341                  */
8342                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8343                         ctxt.info.valid_sections |=
8344                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8345                         ctxt.info.switch_id =
8346                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8347                 }
8348
8349                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8350                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8351                 break;
8352
8353         case I40E_VSI_SRIOV:
8354                 ctxt.pf_num = hw->pf_id;
8355                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8356                 ctxt.uplink_seid = vsi->uplink_seid;
8357                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8358                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8359
8360                 /* This VSI is connected to VEB so the switch_id
8361                  * should be set to zero by default.
8362                  */
8363                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8364                         ctxt.info.valid_sections |=
8365                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8366                         ctxt.info.switch_id =
8367                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8368                 }
8369
8370                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8371                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8372                 if (pf->vf[vsi->vf_id].spoofchk) {
8373                         ctxt.info.valid_sections |=
8374                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8375                         ctxt.info.sec_flags |=
8376                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8377                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8378                 }
8379                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8380                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8381                 break;
8382
8383 #ifdef I40E_FCOE
8384         case I40E_VSI_FCOE:
8385                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8386                 if (ret) {
8387                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8388                         return ret;
8389                 }
8390                 break;
8391
8392 #endif /* I40E_FCOE */
8393         default:
8394                 return -ENODEV;
8395         }
8396
8397         if (vsi->type != I40E_VSI_MAIN) {
8398                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8399                 if (ret) {
8400                         dev_info(&vsi->back->pdev->dev,
8401                                  "add vsi failed, aq_err=%d\n",
8402                                  vsi->back->hw.aq.asq_last_status);
8403                         ret = -ENOENT;
8404                         goto err;
8405                 }
8406                 vsi->info = ctxt.info;
8407                 vsi->info.valid_sections = 0;
8408                 vsi->seid = ctxt.seid;
8409                 vsi->id = ctxt.vsi_number;
8410         }
8411
8412         /* If macvlan filters already exist, force them to get loaded */
8413         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8414                 f->changed = true;
8415                 f_count++;
8416
8417                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8418                         struct i40e_aqc_remove_macvlan_element_data element;
8419
8420                         memset(&element, 0, sizeof(element));
8421                         ether_addr_copy(element.mac_addr, f->macaddr);
8422                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8423                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8424                                                      &element, 1, NULL);
8425                         if (ret) {
8426                                 /* some older FW has a different default */
8427                                 element.flags |=
8428                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8429                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8430                                                        &element, 1, NULL);
8431                         }
8432
8433                         i40e_aq_mac_address_write(hw,
8434                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8435                                                   f->macaddr, NULL);
8436                 }
8437         }
8438         if (f_count) {
8439                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8440                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8441         }
8442
8443         /* Update VSI BW information */
8444         ret = i40e_vsi_get_bw_info(vsi);
8445         if (ret) {
8446                 dev_info(&pf->pdev->dev,
8447                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8448                          ret, pf->hw.aq.asq_last_status);
8449                 /* VSI is already added so not tearing that up */
8450                 ret = 0;
8451         }
8452
8453 err:
8454         return ret;
8455 }
8456
8457 /**
8458  * i40e_vsi_release - Delete a VSI and free its resources
8459  * @vsi: the VSI being removed
8460  *
8461  * Returns 0 on success or < 0 on error
8462  **/
8463 int i40e_vsi_release(struct i40e_vsi *vsi)
8464 {
8465         struct i40e_mac_filter *f, *ftmp;
8466         struct i40e_veb *veb = NULL;
8467         struct i40e_pf *pf;
8468         u16 uplink_seid;
8469         int i, n;
8470
8471         pf = vsi->back;
8472
8473         /* release of a VEB-owner or last VSI is not allowed */
8474         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8475                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8476                          vsi->seid, vsi->uplink_seid);
8477                 return -ENODEV;
8478         }
8479         if (vsi == pf->vsi[pf->lan_vsi] &&
8480             !test_bit(__I40E_DOWN, &pf->state)) {
8481                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8482                 return -ENODEV;
8483         }
8484
8485         uplink_seid = vsi->uplink_seid;
8486         if (vsi->type != I40E_VSI_SRIOV) {
8487                 if (vsi->netdev_registered) {
8488                         vsi->netdev_registered = false;
8489                         if (vsi->netdev) {
8490                                 /* results in a call to i40e_close() */
8491                                 unregister_netdev(vsi->netdev);
8492                         }
8493                 } else {
8494                         i40e_vsi_close(vsi);
8495                 }
8496                 i40e_vsi_disable_irq(vsi);
8497         }
8498
8499         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8500                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8501                                 f->is_vf, f->is_netdev);
8502         i40e_sync_vsi_filters(vsi);
8503
8504         i40e_vsi_delete(vsi);
8505         i40e_vsi_free_q_vectors(vsi);
8506         if (vsi->netdev) {
8507                 free_netdev(vsi->netdev);
8508                 vsi->netdev = NULL;
8509         }
8510         i40e_vsi_clear_rings(vsi);
8511         i40e_vsi_clear(vsi);
8512
8513         /* If this was the last thing on the VEB, except for the
8514          * controlling VSI, remove the VEB, which puts the controlling
8515          * VSI onto the next level down in the switch.
8516          *
8517          * Well, okay, there's one more exception here: don't remove
8518          * the orphan VEBs yet.  We'll wait for an explicit remove request
8519          * from up the network stack.
8520          */
8521         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8522                 if (pf->vsi[i] &&
8523                     pf->vsi[i]->uplink_seid == uplink_seid &&
8524                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8525                         n++;      /* count the VSIs */
8526                 }
8527         }
8528         for (i = 0; i < I40E_MAX_VEB; i++) {
8529                 if (!pf->veb[i])
8530                         continue;
8531                 if (pf->veb[i]->uplink_seid == uplink_seid)
8532                         n++;     /* count the VEBs */
8533                 if (pf->veb[i]->seid == uplink_seid)
8534                         veb = pf->veb[i];
8535         }
8536         if (n == 0 && veb && veb->uplink_seid != 0)
8537                 i40e_veb_release(veb);
8538
8539         return 0;
8540 }
8541
8542 /**
8543  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8544  * @vsi: ptr to the VSI
8545  *
8546  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8547  * corresponding SW VSI structure and initializes num_queue_pairs for the
8548  * newly allocated VSI.
8549  *
8550  * Returns 0 on success or negative on failure
8551  **/
8552 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8553 {
8554         int ret = -ENOENT;
8555         struct i40e_pf *pf = vsi->back;
8556
8557         if (vsi->q_vectors[0]) {
8558                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8559                          vsi->seid);
8560                 return -EEXIST;
8561         }
8562
8563         if (vsi->base_vector) {
8564                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8565                          vsi->seid, vsi->base_vector);
8566                 return -EEXIST;
8567         }
8568
8569         ret = i40e_vsi_alloc_q_vectors(vsi);
8570         if (ret) {
8571                 dev_info(&pf->pdev->dev,
8572                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8573                          vsi->num_q_vectors, vsi->seid, ret);
8574                 vsi->num_q_vectors = 0;
8575                 goto vector_setup_out;
8576         }
8577
8578         if (vsi->num_q_vectors)
8579                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8580                                                  vsi->num_q_vectors, vsi->idx);
8581         if (vsi->base_vector < 0) {
8582                 dev_info(&pf->pdev->dev,
8583                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8584                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8585                 i40e_vsi_free_q_vectors(vsi);
8586                 ret = -ENOENT;
8587                 goto vector_setup_out;
8588         }
8589
8590 vector_setup_out:
8591         return ret;
8592 }
8593
8594 /**
8595  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8596  * @vsi: pointer to the vsi.
8597  *
8598  * This re-allocates a vsi's queue resources.
8599  *
8600  * Returns pointer to the successfully allocated and configured VSI sw struct
8601  * on success, otherwise returns NULL on failure.
8602  **/
8603 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8604 {
8605         struct i40e_pf *pf = vsi->back;
8606         u8 enabled_tc;
8607         int ret;
8608
8609         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8610         i40e_vsi_clear_rings(vsi);
8611
8612         i40e_vsi_free_arrays(vsi, false);
8613         i40e_set_num_rings_in_vsi(vsi);
8614         ret = i40e_vsi_alloc_arrays(vsi, false);
8615         if (ret)
8616                 goto err_vsi;
8617
8618         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8619         if (ret < 0) {
8620                 dev_info(&pf->pdev->dev,
8621                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8622                          vsi->alloc_queue_pairs, vsi->seid, ret);
8623                 goto err_vsi;
8624         }
8625         vsi->base_queue = ret;
8626
8627         /* Update the FW view of the VSI. Force a reset of TC and queue
8628          * layout configurations.
8629          */
8630         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8631         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8632         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8633         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8634
8635         /* assign it some queues */
8636         ret = i40e_alloc_rings(vsi);
8637         if (ret)
8638                 goto err_rings;
8639
8640         /* map all of the rings to the q_vectors */
8641         i40e_vsi_map_rings_to_vectors(vsi);
8642         return vsi;
8643
8644 err_rings:
8645         i40e_vsi_free_q_vectors(vsi);
8646         if (vsi->netdev_registered) {
8647                 vsi->netdev_registered = false;
8648                 unregister_netdev(vsi->netdev);
8649                 free_netdev(vsi->netdev);
8650                 vsi->netdev = NULL;
8651         }
8652         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8653 err_vsi:
8654         i40e_vsi_clear(vsi);
8655         return NULL;
8656 }
8657
8658 /**
8659  * i40e_vsi_setup - Set up a VSI by a given type
8660  * @pf: board private structure
8661  * @type: VSI type
8662  * @uplink_seid: the switch element to link to
8663  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8664  *
8665  * This allocates the sw VSI structure and its queue resources, then add a VSI
8666  * to the identified VEB.
8667  *
8668  * Returns pointer to the successfully allocated and configure VSI sw struct on
8669  * success, otherwise returns NULL on failure.
8670  **/
8671 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8672                                 u16 uplink_seid, u32 param1)
8673 {
8674         struct i40e_vsi *vsi = NULL;
8675         struct i40e_veb *veb = NULL;
8676         int ret, i;
8677         int v_idx;
8678
8679         /* The requested uplink_seid must be either
8680          *     - the PF's port seid
8681          *              no VEB is needed because this is the PF
8682          *              or this is a Flow Director special case VSI
8683          *     - seid of an existing VEB
8684          *     - seid of a VSI that owns an existing VEB
8685          *     - seid of a VSI that doesn't own a VEB
8686          *              a new VEB is created and the VSI becomes the owner
8687          *     - seid of the PF VSI, which is what creates the first VEB
8688          *              this is a special case of the previous
8689          *
8690          * Find which uplink_seid we were given and create a new VEB if needed
8691          */
8692         for (i = 0; i < I40E_MAX_VEB; i++) {
8693                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8694                         veb = pf->veb[i];
8695                         break;
8696                 }
8697         }
8698
8699         if (!veb && uplink_seid != pf->mac_seid) {
8700
8701                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8702                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8703                                 vsi = pf->vsi[i];
8704                                 break;
8705                         }
8706                 }
8707                 if (!vsi) {
8708                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8709                                  uplink_seid);
8710                         return NULL;
8711                 }
8712
8713                 if (vsi->uplink_seid == pf->mac_seid)
8714                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8715                                              vsi->tc_config.enabled_tc);
8716                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8717                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8718                                              vsi->tc_config.enabled_tc);
8719                 if (veb) {
8720                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8721                                 dev_info(&vsi->back->pdev->dev,
8722                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8723                                          __func__);
8724                                 return NULL;
8725                         }
8726                         i40e_config_bridge_mode(veb);
8727                 }
8728                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8729                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8730                                 veb = pf->veb[i];
8731                 }
8732                 if (!veb) {
8733                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8734                         return NULL;
8735                 }
8736
8737                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8738                 uplink_seid = veb->seid;
8739         }
8740
8741         /* get vsi sw struct */
8742         v_idx = i40e_vsi_mem_alloc(pf, type);
8743         if (v_idx < 0)
8744                 goto err_alloc;
8745         vsi = pf->vsi[v_idx];
8746         if (!vsi)
8747                 goto err_alloc;
8748         vsi->type = type;
8749         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8750
8751         if (type == I40E_VSI_MAIN)
8752                 pf->lan_vsi = v_idx;
8753         else if (type == I40E_VSI_SRIOV)
8754                 vsi->vf_id = param1;
8755         /* assign it some queues */
8756         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8757                                 vsi->idx);
8758         if (ret < 0) {
8759                 dev_info(&pf->pdev->dev,
8760                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8761                          vsi->alloc_queue_pairs, vsi->seid, ret);
8762                 goto err_vsi;
8763         }
8764         vsi->base_queue = ret;
8765
8766         /* get a VSI from the hardware */
8767         vsi->uplink_seid = uplink_seid;
8768         ret = i40e_add_vsi(vsi);
8769         if (ret)
8770                 goto err_vsi;
8771
8772         switch (vsi->type) {
8773         /* setup the netdev if needed */
8774         case I40E_VSI_MAIN:
8775         case I40E_VSI_VMDQ2:
8776         case I40E_VSI_FCOE:
8777                 ret = i40e_config_netdev(vsi);
8778                 if (ret)
8779                         goto err_netdev;
8780                 ret = register_netdev(vsi->netdev);
8781                 if (ret)
8782                         goto err_netdev;
8783                 vsi->netdev_registered = true;
8784                 netif_carrier_off(vsi->netdev);
8785 #ifdef CONFIG_I40E_DCB
8786                 /* Setup DCB netlink interface */
8787                 i40e_dcbnl_setup(vsi);
8788 #endif /* CONFIG_I40E_DCB */
8789                 /* fall through */
8790
8791         case I40E_VSI_FDIR:
8792                 /* set up vectors and rings if needed */
8793                 ret = i40e_vsi_setup_vectors(vsi);
8794                 if (ret)
8795                         goto err_msix;
8796
8797                 ret = i40e_alloc_rings(vsi);
8798                 if (ret)
8799                         goto err_rings;
8800
8801                 /* map all of the rings to the q_vectors */
8802                 i40e_vsi_map_rings_to_vectors(vsi);
8803
8804                 i40e_vsi_reset_stats(vsi);
8805                 break;
8806
8807         default:
8808                 /* no netdev or rings for the other VSI types */
8809                 break;
8810         }
8811
8812         return vsi;
8813
8814 err_rings:
8815         i40e_vsi_free_q_vectors(vsi);
8816 err_msix:
8817         if (vsi->netdev_registered) {
8818                 vsi->netdev_registered = false;
8819                 unregister_netdev(vsi->netdev);
8820                 free_netdev(vsi->netdev);
8821                 vsi->netdev = NULL;
8822         }
8823 err_netdev:
8824         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8825 err_vsi:
8826         i40e_vsi_clear(vsi);
8827 err_alloc:
8828         return NULL;
8829 }
8830
8831 /**
8832  * i40e_veb_get_bw_info - Query VEB BW information
8833  * @veb: the veb to query
8834  *
8835  * Query the Tx scheduler BW configuration data for given VEB
8836  **/
8837 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8838 {
8839         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8840         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8841         struct i40e_pf *pf = veb->pf;
8842         struct i40e_hw *hw = &pf->hw;
8843         u32 tc_bw_max;
8844         int ret = 0;
8845         int i;
8846
8847         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8848                                                   &bw_data, NULL);
8849         if (ret) {
8850                 dev_info(&pf->pdev->dev,
8851                          "query veb bw config failed, aq_err=%d\n",
8852                          hw->aq.asq_last_status);
8853                 goto out;
8854         }
8855
8856         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8857                                                    &ets_data, NULL);
8858         if (ret) {
8859                 dev_info(&pf->pdev->dev,
8860                          "query veb bw ets config failed, aq_err=%d\n",
8861                          hw->aq.asq_last_status);
8862                 goto out;
8863         }
8864
8865         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8866         veb->bw_max_quanta = ets_data.tc_bw_max;
8867         veb->is_abs_credits = bw_data.absolute_credits_enable;
8868         veb->enabled_tc = ets_data.tc_valid_bits;
8869         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8870                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8871         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8872                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8873                 veb->bw_tc_limit_credits[i] =
8874                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8875                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8876         }
8877
8878 out:
8879         return ret;
8880 }
8881
8882 /**
8883  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8884  * @pf: board private structure
8885  *
8886  * On error: returns error code (negative)
8887  * On success: returns vsi index in PF (positive)
8888  **/
8889 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8890 {
8891         int ret = -ENOENT;
8892         struct i40e_veb *veb;
8893         int i;
8894
8895         /* Need to protect the allocation of switch elements at the PF level */
8896         mutex_lock(&pf->switch_mutex);
8897
8898         /* VEB list may be fragmented if VEB creation/destruction has
8899          * been happening.  We can afford to do a quick scan to look
8900          * for any free slots in the list.
8901          *
8902          * find next empty veb slot, looping back around if necessary
8903          */
8904         i = 0;
8905         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8906                 i++;
8907         if (i >= I40E_MAX_VEB) {
8908                 ret = -ENOMEM;
8909                 goto err_alloc_veb;  /* out of VEB slots! */
8910         }
8911
8912         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8913         if (!veb) {
8914                 ret = -ENOMEM;
8915                 goto err_alloc_veb;
8916         }
8917         veb->pf = pf;
8918         veb->idx = i;
8919         veb->enabled_tc = 1;
8920
8921         pf->veb[i] = veb;
8922         ret = i;
8923 err_alloc_veb:
8924         mutex_unlock(&pf->switch_mutex);
8925         return ret;
8926 }
8927
8928 /**
8929  * i40e_switch_branch_release - Delete a branch of the switch tree
8930  * @branch: where to start deleting
8931  *
8932  * This uses recursion to find the tips of the branch to be
8933  * removed, deleting until we get back to and can delete this VEB.
8934  **/
8935 static void i40e_switch_branch_release(struct i40e_veb *branch)
8936 {
8937         struct i40e_pf *pf = branch->pf;
8938         u16 branch_seid = branch->seid;
8939         u16 veb_idx = branch->idx;
8940         int i;
8941
8942         /* release any VEBs on this VEB - RECURSION */
8943         for (i = 0; i < I40E_MAX_VEB; i++) {
8944                 if (!pf->veb[i])
8945                         continue;
8946                 if (pf->veb[i]->uplink_seid == branch->seid)
8947                         i40e_switch_branch_release(pf->veb[i]);
8948         }
8949
8950         /* Release the VSIs on this VEB, but not the owner VSI.
8951          *
8952          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8953          *       the VEB itself, so don't use (*branch) after this loop.
8954          */
8955         for (i = 0; i < pf->num_alloc_vsi; i++) {
8956                 if (!pf->vsi[i])
8957                         continue;
8958                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8959                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8960                         i40e_vsi_release(pf->vsi[i]);
8961                 }
8962         }
8963
8964         /* There's one corner case where the VEB might not have been
8965          * removed, so double check it here and remove it if needed.
8966          * This case happens if the veb was created from the debugfs
8967          * commands and no VSIs were added to it.
8968          */
8969         if (pf->veb[veb_idx])
8970                 i40e_veb_release(pf->veb[veb_idx]);
8971 }
8972
8973 /**
8974  * i40e_veb_clear - remove veb struct
8975  * @veb: the veb to remove
8976  **/
8977 static void i40e_veb_clear(struct i40e_veb *veb)
8978 {
8979         if (!veb)
8980                 return;
8981
8982         if (veb->pf) {
8983                 struct i40e_pf *pf = veb->pf;
8984
8985                 mutex_lock(&pf->switch_mutex);
8986                 if (pf->veb[veb->idx] == veb)
8987                         pf->veb[veb->idx] = NULL;
8988                 mutex_unlock(&pf->switch_mutex);
8989         }
8990
8991         kfree(veb);
8992 }
8993
8994 /**
8995  * i40e_veb_release - Delete a VEB and free its resources
8996  * @veb: the VEB being removed
8997  **/
8998 void i40e_veb_release(struct i40e_veb *veb)
8999 {
9000         struct i40e_vsi *vsi = NULL;
9001         struct i40e_pf *pf;
9002         int i, n = 0;
9003
9004         pf = veb->pf;
9005
9006         /* find the remaining VSI and check for extras */
9007         for (i = 0; i < pf->num_alloc_vsi; i++) {
9008                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9009                         n++;
9010                         vsi = pf->vsi[i];
9011                 }
9012         }
9013         if (n != 1) {
9014                 dev_info(&pf->pdev->dev,
9015                          "can't remove VEB %d with %d VSIs left\n",
9016                          veb->seid, n);
9017                 return;
9018         }
9019
9020         /* move the remaining VSI to uplink veb */
9021         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9022         if (veb->uplink_seid) {
9023                 vsi->uplink_seid = veb->uplink_seid;
9024                 if (veb->uplink_seid == pf->mac_seid)
9025                         vsi->veb_idx = I40E_NO_VEB;
9026                 else
9027                         vsi->veb_idx = veb->veb_idx;
9028         } else {
9029                 /* floating VEB */
9030                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9031                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9032         }
9033
9034         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9035         i40e_veb_clear(veb);
9036 }
9037
9038 /**
9039  * i40e_add_veb - create the VEB in the switch
9040  * @veb: the VEB to be instantiated
9041  * @vsi: the controlling VSI
9042  **/
9043 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9044 {
9045         bool is_default = false;
9046         bool is_cloud = false;
9047         int ret;
9048
9049         /* get a VEB from the hardware */
9050         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
9051                               veb->enabled_tc, is_default,
9052                               is_cloud, &veb->seid, NULL);
9053         if (ret) {
9054                 dev_info(&veb->pf->pdev->dev,
9055                          "couldn't add VEB, err %d, aq_err %d\n",
9056                          ret, veb->pf->hw.aq.asq_last_status);
9057                 return -EPERM;
9058         }
9059
9060         /* get statistics counter */
9061         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
9062                                          &veb->stats_idx, NULL, NULL, NULL);
9063         if (ret) {
9064                 dev_info(&veb->pf->pdev->dev,
9065                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
9066                          ret, veb->pf->hw.aq.asq_last_status);
9067                 return -EPERM;
9068         }
9069         ret = i40e_veb_get_bw_info(veb);
9070         if (ret) {
9071                 dev_info(&veb->pf->pdev->dev,
9072                          "couldn't get VEB bw info, err %d, aq_err %d\n",
9073                          ret, veb->pf->hw.aq.asq_last_status);
9074                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
9075                 return -ENOENT;
9076         }
9077
9078         vsi->uplink_seid = veb->seid;
9079         vsi->veb_idx = veb->idx;
9080         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9081
9082         return 0;
9083 }
9084
9085 /**
9086  * i40e_veb_setup - Set up a VEB
9087  * @pf: board private structure
9088  * @flags: VEB setup flags
9089  * @uplink_seid: the switch element to link to
9090  * @vsi_seid: the initial VSI seid
9091  * @enabled_tc: Enabled TC bit-map
9092  *
9093  * This allocates the sw VEB structure and links it into the switch
9094  * It is possible and legal for this to be a duplicate of an already
9095  * existing VEB.  It is also possible for both uplink and vsi seids
9096  * to be zero, in order to create a floating VEB.
9097  *
9098  * Returns pointer to the successfully allocated VEB sw struct on
9099  * success, otherwise returns NULL on failure.
9100  **/
9101 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9102                                 u16 uplink_seid, u16 vsi_seid,
9103                                 u8 enabled_tc)
9104 {
9105         struct i40e_veb *veb, *uplink_veb = NULL;
9106         int vsi_idx, veb_idx;
9107         int ret;
9108
9109         /* if one seid is 0, the other must be 0 to create a floating relay */
9110         if ((uplink_seid == 0 || vsi_seid == 0) &&
9111             (uplink_seid + vsi_seid != 0)) {
9112                 dev_info(&pf->pdev->dev,
9113                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9114                          uplink_seid, vsi_seid);
9115                 return NULL;
9116         }
9117
9118         /* make sure there is such a vsi and uplink */
9119         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9120                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9121                         break;
9122         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9123                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9124                          vsi_seid);
9125                 return NULL;
9126         }
9127
9128         if (uplink_seid && uplink_seid != pf->mac_seid) {
9129                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9130                         if (pf->veb[veb_idx] &&
9131                             pf->veb[veb_idx]->seid == uplink_seid) {
9132                                 uplink_veb = pf->veb[veb_idx];
9133                                 break;
9134                         }
9135                 }
9136                 if (!uplink_veb) {
9137                         dev_info(&pf->pdev->dev,
9138                                  "uplink seid %d not found\n", uplink_seid);
9139                         return NULL;
9140                 }
9141         }
9142
9143         /* get veb sw struct */
9144         veb_idx = i40e_veb_mem_alloc(pf);
9145         if (veb_idx < 0)
9146                 goto err_alloc;
9147         veb = pf->veb[veb_idx];
9148         veb->flags = flags;
9149         veb->uplink_seid = uplink_seid;
9150         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9151         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9152
9153         /* create the VEB in the switch */
9154         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9155         if (ret)
9156                 goto err_veb;
9157         if (vsi_idx == pf->lan_vsi)
9158                 pf->lan_veb = veb->idx;
9159
9160         return veb;
9161
9162 err_veb:
9163         i40e_veb_clear(veb);
9164 err_alloc:
9165         return NULL;
9166 }
9167
9168 /**
9169  * i40e_setup_pf_switch_element - set PF vars based on switch type
9170  * @pf: board private structure
9171  * @ele: element we are building info from
9172  * @num_reported: total number of elements
9173  * @printconfig: should we print the contents
9174  *
9175  * helper function to assist in extracting a few useful SEID values.
9176  **/
9177 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9178                                 struct i40e_aqc_switch_config_element_resp *ele,
9179                                 u16 num_reported, bool printconfig)
9180 {
9181         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9182         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9183         u8 element_type = ele->element_type;
9184         u16 seid = le16_to_cpu(ele->seid);
9185
9186         if (printconfig)
9187                 dev_info(&pf->pdev->dev,
9188                          "type=%d seid=%d uplink=%d downlink=%d\n",
9189                          element_type, seid, uplink_seid, downlink_seid);
9190
9191         switch (element_type) {
9192         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9193                 pf->mac_seid = seid;
9194                 break;
9195         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9196                 /* Main VEB? */
9197                 if (uplink_seid != pf->mac_seid)
9198                         break;
9199                 if (pf->lan_veb == I40E_NO_VEB) {
9200                         int v;
9201
9202                         /* find existing or else empty VEB */
9203                         for (v = 0; v < I40E_MAX_VEB; v++) {
9204                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9205                                         pf->lan_veb = v;
9206                                         break;
9207                                 }
9208                         }
9209                         if (pf->lan_veb == I40E_NO_VEB) {
9210                                 v = i40e_veb_mem_alloc(pf);
9211                                 if (v < 0)
9212                                         break;
9213                                 pf->lan_veb = v;
9214                         }
9215                 }
9216
9217                 pf->veb[pf->lan_veb]->seid = seid;
9218                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9219                 pf->veb[pf->lan_veb]->pf = pf;
9220                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9221                 break;
9222         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9223                 if (num_reported != 1)
9224                         break;
9225                 /* This is immediately after a reset so we can assume this is
9226                  * the PF's VSI
9227                  */
9228                 pf->mac_seid = uplink_seid;
9229                 pf->pf_seid = downlink_seid;
9230                 pf->main_vsi_seid = seid;
9231                 if (printconfig)
9232                         dev_info(&pf->pdev->dev,
9233                                  "pf_seid=%d main_vsi_seid=%d\n",
9234                                  pf->pf_seid, pf->main_vsi_seid);
9235                 break;
9236         case I40E_SWITCH_ELEMENT_TYPE_PF:
9237         case I40E_SWITCH_ELEMENT_TYPE_VF:
9238         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9239         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9240         case I40E_SWITCH_ELEMENT_TYPE_PE:
9241         case I40E_SWITCH_ELEMENT_TYPE_PA:
9242                 /* ignore these for now */
9243                 break;
9244         default:
9245                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9246                          element_type, seid);
9247                 break;
9248         }
9249 }
9250
9251 /**
9252  * i40e_fetch_switch_configuration - Get switch config from firmware
9253  * @pf: board private structure
9254  * @printconfig: should we print the contents
9255  *
9256  * Get the current switch configuration from the device and
9257  * extract a few useful SEID values.
9258  **/
9259 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9260 {
9261         struct i40e_aqc_get_switch_config_resp *sw_config;
9262         u16 next_seid = 0;
9263         int ret = 0;
9264         u8 *aq_buf;
9265         int i;
9266
9267         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9268         if (!aq_buf)
9269                 return -ENOMEM;
9270
9271         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9272         do {
9273                 u16 num_reported, num_total;
9274
9275                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9276                                                 I40E_AQ_LARGE_BUF,
9277                                                 &next_seid, NULL);
9278                 if (ret) {
9279                         dev_info(&pf->pdev->dev,
9280                                  "get switch config failed %d aq_err=%x\n",
9281                                  ret, pf->hw.aq.asq_last_status);
9282                         kfree(aq_buf);
9283                         return -ENOENT;
9284                 }
9285
9286                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9287                 num_total = le16_to_cpu(sw_config->header.num_total);
9288
9289                 if (printconfig)
9290                         dev_info(&pf->pdev->dev,
9291                                  "header: %d reported %d total\n",
9292                                  num_reported, num_total);
9293
9294                 for (i = 0; i < num_reported; i++) {
9295                         struct i40e_aqc_switch_config_element_resp *ele =
9296                                 &sw_config->element[i];
9297
9298                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9299                                                      printconfig);
9300                 }
9301         } while (next_seid != 0);
9302
9303         kfree(aq_buf);
9304         return ret;
9305 }
9306
9307 /**
9308  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9309  * @pf: board private structure
9310  * @reinit: if the Main VSI needs to re-initialized.
9311  *
9312  * Returns 0 on success, negative value on failure
9313  **/
9314 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9315 {
9316         int ret;
9317
9318         /* find out what's out there already */
9319         ret = i40e_fetch_switch_configuration(pf, false);
9320         if (ret) {
9321                 dev_info(&pf->pdev->dev,
9322                          "couldn't fetch switch config, err %d, aq_err %d\n",
9323                          ret, pf->hw.aq.asq_last_status);
9324                 return ret;
9325         }
9326         i40e_pf_reset_stats(pf);
9327
9328         /* first time setup */
9329         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9330                 struct i40e_vsi *vsi = NULL;
9331                 u16 uplink_seid;
9332
9333                 /* Set up the PF VSI associated with the PF's main VSI
9334                  * that is already in the HW switch
9335                  */
9336                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9337                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9338                 else
9339                         uplink_seid = pf->mac_seid;
9340                 if (pf->lan_vsi == I40E_NO_VSI)
9341                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9342                 else if (reinit)
9343                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9344                 if (!vsi) {
9345                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9346                         i40e_fdir_teardown(pf);
9347                         return -EAGAIN;
9348                 }
9349         } else {
9350                 /* force a reset of TC and queue layout configurations */
9351                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9352                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9353                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9354                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9355         }
9356         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9357
9358         i40e_fdir_sb_setup(pf);
9359
9360         /* Setup static PF queue filter control settings */
9361         ret = i40e_setup_pf_filter_control(pf);
9362         if (ret) {
9363                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9364                          ret);
9365                 /* Failure here should not stop continuing other steps */
9366         }
9367
9368         /* enable RSS in the HW, even for only one queue, as the stack can use
9369          * the hash
9370          */
9371         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9372                 i40e_config_rss(pf);
9373
9374         /* fill in link information and enable LSE reporting */
9375         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9376         i40e_link_event(pf);
9377
9378         /* Initialize user-specific link properties */
9379         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9380                                   I40E_AQ_AN_COMPLETED) ? true : false);
9381
9382         i40e_ptp_init(pf);
9383
9384         return ret;
9385 }
9386
9387 /**
9388  * i40e_determine_queue_usage - Work out queue distribution
9389  * @pf: board private structure
9390  **/
9391 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9392 {
9393         int queues_left;
9394
9395         pf->num_lan_qps = 0;
9396 #ifdef I40E_FCOE
9397         pf->num_fcoe_qps = 0;
9398 #endif
9399
9400         /* Find the max queues to be put into basic use.  We'll always be
9401          * using TC0, whether or not DCB is running, and TC0 will get the
9402          * big RSS set.
9403          */
9404         queues_left = pf->hw.func_caps.num_tx_qp;
9405
9406         if ((queues_left == 1) ||
9407             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9408                 /* one qp for PF, no queues for anything else */
9409                 queues_left = 0;
9410                 pf->rss_size = pf->num_lan_qps = 1;
9411
9412                 /* make sure all the fancies are disabled */
9413                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9414 #ifdef I40E_FCOE
9415                                I40E_FLAG_FCOE_ENABLED   |
9416 #endif
9417                                I40E_FLAG_FD_SB_ENABLED  |
9418                                I40E_FLAG_FD_ATR_ENABLED |
9419                                I40E_FLAG_DCB_CAPABLE    |
9420                                I40E_FLAG_SRIOV_ENABLED  |
9421                                I40E_FLAG_VMDQ_ENABLED);
9422         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9423                                   I40E_FLAG_FD_SB_ENABLED |
9424                                   I40E_FLAG_FD_ATR_ENABLED |
9425                                   I40E_FLAG_DCB_CAPABLE))) {
9426                 /* one qp for PF */
9427                 pf->rss_size = pf->num_lan_qps = 1;
9428                 queues_left -= pf->num_lan_qps;
9429
9430                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9431 #ifdef I40E_FCOE
9432                                I40E_FLAG_FCOE_ENABLED   |
9433 #endif
9434                                I40E_FLAG_FD_SB_ENABLED  |
9435                                I40E_FLAG_FD_ATR_ENABLED |
9436                                I40E_FLAG_DCB_ENABLED    |
9437                                I40E_FLAG_VMDQ_ENABLED);
9438         } else {
9439                 /* Not enough queues for all TCs */
9440                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9441                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9442                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9443                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9444                 }
9445                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9446                                         num_online_cpus());
9447                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9448                                         pf->hw.func_caps.num_tx_qp);
9449
9450                 queues_left -= pf->num_lan_qps;
9451         }
9452
9453 #ifdef I40E_FCOE
9454         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9455                 if (I40E_DEFAULT_FCOE <= queues_left) {
9456                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9457                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9458                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9459                 } else {
9460                         pf->num_fcoe_qps = 0;
9461                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9462                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9463                 }
9464
9465                 queues_left -= pf->num_fcoe_qps;
9466         }
9467
9468 #endif
9469         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9470                 if (queues_left > 1) {
9471                         queues_left -= 1; /* save 1 queue for FD */
9472                 } else {
9473                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9474                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9475                 }
9476         }
9477
9478         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9479             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9480                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9481                                         (queues_left / pf->num_vf_qps));
9482                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9483         }
9484
9485         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9486             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9487                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9488                                           (queues_left / pf->num_vmdq_qps));
9489                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9490         }
9491
9492         pf->queues_left = queues_left;
9493 #ifdef I40E_FCOE
9494         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9495 #endif
9496 }
9497
9498 /**
9499  * i40e_setup_pf_filter_control - Setup PF static filter control
9500  * @pf: PF to be setup
9501  *
9502  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9503  * settings. If PE/FCoE are enabled then it will also set the per PF
9504  * based filter sizes required for them. It also enables Flow director,
9505  * ethertype and macvlan type filter settings for the pf.
9506  *
9507  * Returns 0 on success, negative on failure
9508  **/
9509 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9510 {
9511         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9512
9513         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9514
9515         /* Flow Director is enabled */
9516         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9517                 settings->enable_fdir = true;
9518
9519         /* Ethtype and MACVLAN filters enabled for PF */
9520         settings->enable_ethtype = true;
9521         settings->enable_macvlan = true;
9522
9523         if (i40e_set_filter_control(&pf->hw, settings))
9524                 return -ENOENT;
9525
9526         return 0;
9527 }
9528
9529 #define INFO_STRING_LEN 255
9530 static void i40e_print_features(struct i40e_pf *pf)
9531 {
9532         struct i40e_hw *hw = &pf->hw;
9533         char *buf, *string;
9534
9535         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9536         if (!string) {
9537                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9538                 return;
9539         }
9540
9541         buf = string;
9542
9543         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9544 #ifdef CONFIG_PCI_IOV
9545         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9546 #endif
9547         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9548                        pf->hw.func_caps.num_vsis,
9549                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9550                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9551
9552         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9553                 buf += sprintf(buf, "RSS ");
9554         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9555                 buf += sprintf(buf, "FD_ATR ");
9556         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9557                 buf += sprintf(buf, "FD_SB ");
9558                 buf += sprintf(buf, "NTUPLE ");
9559         }
9560         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9561                 buf += sprintf(buf, "DCB ");
9562         if (pf->flags & I40E_FLAG_PTP)
9563                 buf += sprintf(buf, "PTP ");
9564 #ifdef I40E_FCOE
9565         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9566                 buf += sprintf(buf, "FCOE ");
9567 #endif
9568
9569         BUG_ON(buf > (string + INFO_STRING_LEN));
9570         dev_info(&pf->pdev->dev, "%s\n", string);
9571         kfree(string);
9572 }
9573
9574 /**
9575  * i40e_probe - Device initialization routine
9576  * @pdev: PCI device information struct
9577  * @ent: entry in i40e_pci_tbl
9578  *
9579  * i40e_probe initializes a PF identified by a pci_dev structure.
9580  * The OS initialization, configuring of the PF private structure,
9581  * and a hardware reset occur.
9582  *
9583  * Returns 0 on success, negative on failure
9584  **/
9585 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9586 {
9587         struct i40e_aq_get_phy_abilities_resp abilities;
9588         unsigned long ioremap_len;
9589         struct i40e_pf *pf;
9590         struct i40e_hw *hw;
9591         static u16 pfs_found;
9592         u16 link_status;
9593         int err = 0;
9594         u32 len;
9595         u32 i;
9596
9597         err = pci_enable_device_mem(pdev);
9598         if (err)
9599                 return err;
9600
9601         /* set up for high or low dma */
9602         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9603         if (err) {
9604                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9605                 if (err) {
9606                         dev_err(&pdev->dev,
9607                                 "DMA configuration failed: 0x%x\n", err);
9608                         goto err_dma;
9609                 }
9610         }
9611
9612         /* set up pci connections */
9613         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9614                                            IORESOURCE_MEM), i40e_driver_name);
9615         if (err) {
9616                 dev_info(&pdev->dev,
9617                          "pci_request_selected_regions failed %d\n", err);
9618                 goto err_pci_reg;
9619         }
9620
9621         pci_enable_pcie_error_reporting(pdev);
9622         pci_set_master(pdev);
9623
9624         /* Now that we have a PCI connection, we need to do the
9625          * low level device setup.  This is primarily setting up
9626          * the Admin Queue structures and then querying for the
9627          * device's current profile information.
9628          */
9629         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9630         if (!pf) {
9631                 err = -ENOMEM;
9632                 goto err_pf_alloc;
9633         }
9634         pf->next_vsi = 0;
9635         pf->pdev = pdev;
9636         set_bit(__I40E_DOWN, &pf->state);
9637
9638         hw = &pf->hw;
9639         hw->back = pf;
9640
9641         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9642                             I40E_MAX_CSR_SPACE);
9643
9644         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9645         if (!hw->hw_addr) {
9646                 err = -EIO;
9647                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9648                          (unsigned int)pci_resource_start(pdev, 0),
9649                          (unsigned int)pci_resource_len(pdev, 0), err);
9650                 goto err_ioremap;
9651         }
9652         hw->vendor_id = pdev->vendor;
9653         hw->device_id = pdev->device;
9654         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9655         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9656         hw->subsystem_device_id = pdev->subsystem_device;
9657         hw->bus.device = PCI_SLOT(pdev->devfn);
9658         hw->bus.func = PCI_FUNC(pdev->devfn);
9659         pf->instance = pfs_found;
9660
9661         if (debug != -1) {
9662                 pf->msg_enable = pf->hw.debug_mask;
9663                 pf->msg_enable = debug;
9664         }
9665
9666         /* do a special CORER for clearing PXE mode once at init */
9667         if (hw->revision_id == 0 &&
9668             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9669                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9670                 i40e_flush(hw);
9671                 msleep(200);
9672                 pf->corer_count++;
9673
9674                 i40e_clear_pxe_mode(hw);
9675         }
9676
9677         /* Reset here to make sure all is clean and to define PF 'n' */
9678         i40e_clear_hw(hw);
9679         err = i40e_pf_reset(hw);
9680         if (err) {
9681                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9682                 goto err_pf_reset;
9683         }
9684         pf->pfr_count++;
9685
9686         hw->aq.num_arq_entries = I40E_AQ_LEN;
9687         hw->aq.num_asq_entries = I40E_AQ_LEN;
9688         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9689         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9690         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9691
9692         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9693                  "%s-%s:misc",
9694                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9695
9696         err = i40e_init_shared_code(hw);
9697         if (err) {
9698                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9699                 goto err_pf_reset;
9700         }
9701
9702         /* set up a default setting for link flow control */
9703         pf->hw.fc.requested_mode = I40E_FC_NONE;
9704
9705         err = i40e_init_adminq(hw);
9706         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9707         if (err) {
9708                 dev_info(&pdev->dev,
9709                          "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
9710                 goto err_pf_reset;
9711         }
9712
9713         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9714             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9715                 dev_info(&pdev->dev,
9716                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
9717         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9718                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9719                 dev_info(&pdev->dev,
9720                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9721
9722         i40e_verify_eeprom(pf);
9723
9724         /* Rev 0 hardware was never productized */
9725         if (hw->revision_id < 1)
9726                 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");
9727
9728         i40e_clear_pxe_mode(hw);
9729         err = i40e_get_capabilities(pf);
9730         if (err)
9731                 goto err_adminq_setup;
9732
9733         err = i40e_sw_init(pf);
9734         if (err) {
9735                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9736                 goto err_sw_init;
9737         }
9738
9739         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9740                                 hw->func_caps.num_rx_qp,
9741                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9742         if (err) {
9743                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9744                 goto err_init_lan_hmc;
9745         }
9746
9747         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9748         if (err) {
9749                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9750                 err = -ENOENT;
9751                 goto err_configure_lan_hmc;
9752         }
9753
9754         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9755          * Ignore error return codes because if it was already disabled via
9756          * hardware settings this will fail
9757          */
9758         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9759             (pf->hw.aq.fw_maj_ver < 4)) {
9760                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9761                 i40e_aq_stop_lldp(hw, true, NULL);
9762         }
9763
9764         i40e_get_mac_addr(hw, hw->mac.addr);
9765         if (!is_valid_ether_addr(hw->mac.addr)) {
9766                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9767                 err = -EIO;
9768                 goto err_mac_addr;
9769         }
9770         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9771         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9772         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9773         if (is_valid_ether_addr(hw->mac.port_addr))
9774                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9775 #ifdef I40E_FCOE
9776         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9777         if (err)
9778                 dev_info(&pdev->dev,
9779                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9780         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9781                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9782                          hw->mac.san_addr);
9783                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9784         }
9785         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9786 #endif /* I40E_FCOE */
9787
9788         pci_set_drvdata(pdev, pf);
9789         pci_save_state(pdev);
9790 #ifdef CONFIG_I40E_DCB
9791         err = i40e_init_pf_dcb(pf);
9792         if (err) {
9793                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9794                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9795                 /* Continue without DCB enabled */
9796         }
9797 #endif /* CONFIG_I40E_DCB */
9798
9799         /* set up periodic task facility */
9800         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9801         pf->service_timer_period = HZ;
9802
9803         INIT_WORK(&pf->service_task, i40e_service_task);
9804         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9805         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9806         pf->link_check_timeout = jiffies;
9807
9808         /* WoL defaults to disabled */
9809         pf->wol_en = false;
9810         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9811
9812         /* set up the main switch operations */
9813         i40e_determine_queue_usage(pf);
9814         i40e_init_interrupt_scheme(pf);
9815
9816         /* The number of VSIs reported by the FW is the minimum guaranteed
9817          * to us; HW supports far more and we share the remaining pool with
9818          * the other PFs. We allocate space for more than the guarantee with
9819          * the understanding that we might not get them all later.
9820          */
9821         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9822                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9823         else
9824                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9825
9826         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9827         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9828         pf->vsi = kzalloc(len, GFP_KERNEL);
9829         if (!pf->vsi) {
9830                 err = -ENOMEM;
9831                 goto err_switch_setup;
9832         }
9833
9834         err = i40e_setup_pf_switch(pf, false);
9835         if (err) {
9836                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9837                 goto err_vsis;
9838         }
9839         /* if FDIR VSI was set up, start it now */
9840         for (i = 0; i < pf->num_alloc_vsi; i++) {
9841                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9842                         i40e_vsi_open(pf->vsi[i]);
9843                         break;
9844                 }
9845         }
9846
9847         /* driver is only interested in link up/down and module qualification
9848          * reports from firmware
9849          */
9850         err = i40e_aq_set_phy_int_mask(&pf->hw,
9851                                        I40E_AQ_EVENT_LINK_UPDOWN |
9852                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9853         if (err)
9854                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9855
9856         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
9857             (pf->hw.aq.fw_maj_ver < 4)) {
9858                 msleep(75);
9859                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9860                 if (err)
9861                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9862                                  pf->hw.aq.asq_last_status);
9863         }
9864         /* The main driver is (mostly) up and happy. We need to set this state
9865          * before setting up the misc vector or we get a race and the vector
9866          * ends up disabled forever.
9867          */
9868         clear_bit(__I40E_DOWN, &pf->state);
9869
9870         /* In case of MSIX we are going to setup the misc vector right here
9871          * to handle admin queue events etc. In case of legacy and MSI
9872          * the misc functionality and queue processing is combined in
9873          * the same vector and that gets setup at open.
9874          */
9875         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9876                 err = i40e_setup_misc_vector(pf);
9877                 if (err) {
9878                         dev_info(&pdev->dev,
9879                                  "setup of misc vector failed: %d\n", err);
9880                         goto err_vsis;
9881                 }
9882         }
9883
9884 #ifdef CONFIG_PCI_IOV
9885         /* prep for VF support */
9886         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9887             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9888             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9889                 u32 val;
9890
9891                 /* disable link interrupts for VFs */
9892                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9893                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9894                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9895                 i40e_flush(hw);
9896
9897                 if (pci_num_vf(pdev)) {
9898                         dev_info(&pdev->dev,
9899                                  "Active VFs found, allocating resources.\n");
9900                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9901                         if (err)
9902                                 dev_info(&pdev->dev,
9903                                          "Error %d allocating resources for existing VFs\n",
9904                                          err);
9905                 }
9906         }
9907 #endif /* CONFIG_PCI_IOV */
9908
9909         pfs_found++;
9910
9911         i40e_dbg_pf_init(pf);
9912
9913         /* tell the firmware that we're starting */
9914         i40e_send_version(pf);
9915
9916         /* since everything's happy, start the service_task timer */
9917         mod_timer(&pf->service_timer,
9918                   round_jiffies(jiffies + pf->service_timer_period));
9919
9920 #ifdef I40E_FCOE
9921         /* create FCoE interface */
9922         i40e_fcoe_vsi_setup(pf);
9923
9924 #endif
9925         /* Get the negotiated link width and speed from PCI config space */
9926         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9927
9928         i40e_set_pci_config_data(hw, link_status);
9929
9930         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9931                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9932                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9933                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9934                  "Unknown"),
9935                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9936                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9937                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9938                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9939                  "Unknown"));
9940
9941         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9942             hw->bus.speed < i40e_bus_speed_8000) {
9943                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9944                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9945         }
9946
9947         /* get the requested speeds from the fw */
9948         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9949         if (err)
9950                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9951                          err);
9952         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9953
9954         /* print a string summarizing features */
9955         i40e_print_features(pf);
9956
9957         return 0;
9958
9959         /* Unwind what we've done if something failed in the setup */
9960 err_vsis:
9961         set_bit(__I40E_DOWN, &pf->state);
9962         i40e_clear_interrupt_scheme(pf);
9963         kfree(pf->vsi);
9964 err_switch_setup:
9965         i40e_reset_interrupt_capability(pf);
9966         del_timer_sync(&pf->service_timer);
9967 err_mac_addr:
9968 err_configure_lan_hmc:
9969         (void)i40e_shutdown_lan_hmc(hw);
9970 err_init_lan_hmc:
9971         kfree(pf->qp_pile);
9972 err_sw_init:
9973 err_adminq_setup:
9974         (void)i40e_shutdown_adminq(hw);
9975 err_pf_reset:
9976         iounmap(hw->hw_addr);
9977 err_ioremap:
9978         kfree(pf);
9979 err_pf_alloc:
9980         pci_disable_pcie_error_reporting(pdev);
9981         pci_release_selected_regions(pdev,
9982                                      pci_select_bars(pdev, IORESOURCE_MEM));
9983 err_pci_reg:
9984 err_dma:
9985         pci_disable_device(pdev);
9986         return err;
9987 }
9988
9989 /**
9990  * i40e_remove - Device removal routine
9991  * @pdev: PCI device information struct
9992  *
9993  * i40e_remove is called by the PCI subsystem to alert the driver
9994  * that is should release a PCI device.  This could be caused by a
9995  * Hot-Plug event, or because the driver is going to be removed from
9996  * memory.
9997  **/
9998 static void i40e_remove(struct pci_dev *pdev)
9999 {
10000         struct i40e_pf *pf = pci_get_drvdata(pdev);
10001         i40e_status ret_code;
10002         int i;
10003
10004         i40e_dbg_pf_exit(pf);
10005
10006         i40e_ptp_stop(pf);
10007
10008         /* no more scheduling of any task */
10009         set_bit(__I40E_DOWN, &pf->state);
10010         del_timer_sync(&pf->service_timer);
10011         cancel_work_sync(&pf->service_task);
10012         i40e_fdir_teardown(pf);
10013
10014         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10015                 i40e_free_vfs(pf);
10016                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10017         }
10018
10019         i40e_fdir_teardown(pf);
10020
10021         /* If there is a switch structure or any orphans, remove them.
10022          * This will leave only the PF's VSI remaining.
10023          */
10024         for (i = 0; i < I40E_MAX_VEB; i++) {
10025                 if (!pf->veb[i])
10026                         continue;
10027
10028                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10029                     pf->veb[i]->uplink_seid == 0)
10030                         i40e_switch_branch_release(pf->veb[i]);
10031         }
10032
10033         /* Now we can shutdown the PF's VSI, just before we kill
10034          * adminq and hmc.
10035          */
10036         if (pf->vsi[pf->lan_vsi])
10037                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10038
10039         /* shutdown and destroy the HMC */
10040         if (pf->hw.hmc.hmc_obj) {
10041                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10042                 if (ret_code)
10043                         dev_warn(&pdev->dev,
10044                                  "Failed to destroy the HMC resources: %d\n",
10045                                  ret_code);
10046         }
10047
10048         /* shutdown the adminq */
10049         ret_code = i40e_shutdown_adminq(&pf->hw);
10050         if (ret_code)
10051                 dev_warn(&pdev->dev,
10052                          "Failed to destroy the Admin Queue resources: %d\n",
10053                          ret_code);
10054
10055         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10056         i40e_clear_interrupt_scheme(pf);
10057         for (i = 0; i < pf->num_alloc_vsi; i++) {
10058                 if (pf->vsi[i]) {
10059                         i40e_vsi_clear_rings(pf->vsi[i]);
10060                         i40e_vsi_clear(pf->vsi[i]);
10061                         pf->vsi[i] = NULL;
10062                 }
10063         }
10064
10065         for (i = 0; i < I40E_MAX_VEB; i++) {
10066                 kfree(pf->veb[i]);
10067                 pf->veb[i] = NULL;
10068         }
10069
10070         kfree(pf->qp_pile);
10071         kfree(pf->vsi);
10072
10073         iounmap(pf->hw.hw_addr);
10074         kfree(pf);
10075         pci_release_selected_regions(pdev,
10076                                      pci_select_bars(pdev, IORESOURCE_MEM));
10077
10078         pci_disable_pcie_error_reporting(pdev);
10079         pci_disable_device(pdev);
10080 }
10081
10082 /**
10083  * i40e_pci_error_detected - warning that something funky happened in PCI land
10084  * @pdev: PCI device information struct
10085  *
10086  * Called to warn that something happened and the error handling steps
10087  * are in progress.  Allows the driver to quiesce things, be ready for
10088  * remediation.
10089  **/
10090 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10091                                                 enum pci_channel_state error)
10092 {
10093         struct i40e_pf *pf = pci_get_drvdata(pdev);
10094
10095         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10096
10097         /* shutdown all operations */
10098         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10099                 rtnl_lock();
10100                 i40e_prep_for_reset(pf);
10101                 rtnl_unlock();
10102         }
10103
10104         /* Request a slot reset */
10105         return PCI_ERS_RESULT_NEED_RESET;
10106 }
10107
10108 /**
10109  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10110  * @pdev: PCI device information struct
10111  *
10112  * Called to find if the driver can work with the device now that
10113  * the pci slot has been reset.  If a basic connection seems good
10114  * (registers are readable and have sane content) then return a
10115  * happy little PCI_ERS_RESULT_xxx.
10116  **/
10117 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10118 {
10119         struct i40e_pf *pf = pci_get_drvdata(pdev);
10120         pci_ers_result_t result;
10121         int err;
10122         u32 reg;
10123
10124         dev_info(&pdev->dev, "%s\n", __func__);
10125         if (pci_enable_device_mem(pdev)) {
10126                 dev_info(&pdev->dev,
10127                          "Cannot re-enable PCI device after reset.\n");
10128                 result = PCI_ERS_RESULT_DISCONNECT;
10129         } else {
10130                 pci_set_master(pdev);
10131                 pci_restore_state(pdev);
10132                 pci_save_state(pdev);
10133                 pci_wake_from_d3(pdev, false);
10134
10135                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10136                 if (reg == 0)
10137                         result = PCI_ERS_RESULT_RECOVERED;
10138                 else
10139                         result = PCI_ERS_RESULT_DISCONNECT;
10140         }
10141
10142         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10143         if (err) {
10144                 dev_info(&pdev->dev,
10145                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10146                          err);
10147                 /* non-fatal, continue */
10148         }
10149
10150         return result;
10151 }
10152
10153 /**
10154  * i40e_pci_error_resume - restart operations after PCI error recovery
10155  * @pdev: PCI device information struct
10156  *
10157  * Called to allow the driver to bring things back up after PCI error
10158  * and/or reset recovery has finished.
10159  **/
10160 static void i40e_pci_error_resume(struct pci_dev *pdev)
10161 {
10162         struct i40e_pf *pf = pci_get_drvdata(pdev);
10163
10164         dev_info(&pdev->dev, "%s\n", __func__);
10165         if (test_bit(__I40E_SUSPENDED, &pf->state))
10166                 return;
10167
10168         rtnl_lock();
10169         i40e_handle_reset_warning(pf);
10170         rtnl_lock();
10171 }
10172
10173 /**
10174  * i40e_shutdown - PCI callback for shutting down
10175  * @pdev: PCI device information struct
10176  **/
10177 static void i40e_shutdown(struct pci_dev *pdev)
10178 {
10179         struct i40e_pf *pf = pci_get_drvdata(pdev);
10180         struct i40e_hw *hw = &pf->hw;
10181
10182         set_bit(__I40E_SUSPENDED, &pf->state);
10183         set_bit(__I40E_DOWN, &pf->state);
10184         rtnl_lock();
10185         i40e_prep_for_reset(pf);
10186         rtnl_unlock();
10187
10188         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10189         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10190
10191         i40e_clear_interrupt_scheme(pf);
10192
10193         if (system_state == SYSTEM_POWER_OFF) {
10194                 pci_wake_from_d3(pdev, pf->wol_en);
10195                 pci_set_power_state(pdev, PCI_D3hot);
10196         }
10197 }
10198
10199 #ifdef CONFIG_PM
10200 /**
10201  * i40e_suspend - PCI callback for moving to D3
10202  * @pdev: PCI device information struct
10203  **/
10204 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10205 {
10206         struct i40e_pf *pf = pci_get_drvdata(pdev);
10207         struct i40e_hw *hw = &pf->hw;
10208
10209         set_bit(__I40E_SUSPENDED, &pf->state);
10210         set_bit(__I40E_DOWN, &pf->state);
10211         del_timer_sync(&pf->service_timer);
10212         cancel_work_sync(&pf->service_task);
10213         i40e_fdir_teardown(pf);
10214
10215         rtnl_lock();
10216         i40e_prep_for_reset(pf);
10217         rtnl_unlock();
10218
10219         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10220         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10221
10222         pci_wake_from_d3(pdev, pf->wol_en);
10223         pci_set_power_state(pdev, PCI_D3hot);
10224
10225         return 0;
10226 }
10227
10228 /**
10229  * i40e_resume - PCI callback for waking up from D3
10230  * @pdev: PCI device information struct
10231  **/
10232 static int i40e_resume(struct pci_dev *pdev)
10233 {
10234         struct i40e_pf *pf = pci_get_drvdata(pdev);
10235         u32 err;
10236
10237         pci_set_power_state(pdev, PCI_D0);
10238         pci_restore_state(pdev);
10239         /* pci_restore_state() clears dev->state_saves, so
10240          * call pci_save_state() again to restore it.
10241          */
10242         pci_save_state(pdev);
10243
10244         err = pci_enable_device_mem(pdev);
10245         if (err) {
10246                 dev_err(&pdev->dev,
10247                         "%s: Cannot enable PCI device from suspend\n",
10248                         __func__);
10249                 return err;
10250         }
10251         pci_set_master(pdev);
10252
10253         /* no wakeup events while running */
10254         pci_wake_from_d3(pdev, false);
10255
10256         /* handling the reset will rebuild the device state */
10257         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10258                 clear_bit(__I40E_DOWN, &pf->state);
10259                 rtnl_lock();
10260                 i40e_reset_and_rebuild(pf, false);
10261                 rtnl_unlock();
10262         }
10263
10264         return 0;
10265 }
10266
10267 #endif
10268 static const struct pci_error_handlers i40e_err_handler = {
10269         .error_detected = i40e_pci_error_detected,
10270         .slot_reset = i40e_pci_error_slot_reset,
10271         .resume = i40e_pci_error_resume,
10272 };
10273
10274 static struct pci_driver i40e_driver = {
10275         .name     = i40e_driver_name,
10276         .id_table = i40e_pci_tbl,
10277         .probe    = i40e_probe,
10278         .remove   = i40e_remove,
10279 #ifdef CONFIG_PM
10280         .suspend  = i40e_suspend,
10281         .resume   = i40e_resume,
10282 #endif
10283         .shutdown = i40e_shutdown,
10284         .err_handler = &i40e_err_handler,
10285         .sriov_configure = i40e_pci_sriov_configure,
10286 };
10287
10288 /**
10289  * i40e_init_module - Driver registration routine
10290  *
10291  * i40e_init_module is the first routine called when the driver is
10292  * loaded. All it does is register with the PCI subsystem.
10293  **/
10294 static int __init i40e_init_module(void)
10295 {
10296         pr_info("%s: %s - version %s\n", i40e_driver_name,
10297                 i40e_driver_string, i40e_driver_version_str);
10298         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10299
10300         i40e_dbg_init();
10301         return pci_register_driver(&i40e_driver);
10302 }
10303 module_init(i40e_init_module);
10304
10305 /**
10306  * i40e_exit_module - Driver exit cleanup routine
10307  *
10308  * i40e_exit_module is called just before the driver is removed
10309  * from memory.
10310  **/
10311 static void __exit i40e_exit_module(void)
10312 {
10313         pci_unregister_driver(&i40e_driver);
10314         i40e_dbg_exit();
10315 }
10316 module_exit(i40e_exit_module);