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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 0
  42 #define DRV_VERSION_BUILD 21
  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         /* required last entry */
  79         {0, }
  80 };
  81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  82
  83 #define I40E_MAX_VF_COUNT 128
  84 static int debug = -1;
  85 module_param(debug, int, 0);
  86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  87
  88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  90 MODULE_LICENSE("GPL");
  91 MODULE_VERSION(DRV_VERSION);
  92
  93 /**
  94  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  95  * @hw:   pointer to the HW structure
  96  * @mem:  ptr to mem struct to fill out
  97  * @size: size of memory requested
  98  * @alignment: what to align the allocation to
  99  **/
 100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 101                             u64 size, u32 alignment)
 102 {
 103         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 104
 105         mem->size = ALIGN(size, alignment);
 106         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 107                                       &mem->pa, GFP_KERNEL);
 108         if (!mem->va)
 109                 return -ENOMEM;
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * i40e_free_dma_mem_d - OS specific memory free for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to free
 118  **/
 119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 120 {
 121         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 122
 123         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 124         mem->va = NULL;
 125         mem->pa = 0;
 126         mem->size = 0;
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 133  * @hw:   pointer to the HW structure
 134  * @mem:  ptr to mem struct to fill out
 135  * @size: size of memory requested
 136  **/
 137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 138                              u32 size)
 139 {
 140         mem->size = size;
 141         mem->va = kzalloc(size, GFP_KERNEL);
 142
 143         if (!mem->va)
 144                 return -ENOMEM;
 145
 146         return 0;
 147 }
 148
 149 /**
 150  * i40e_free_virt_mem_d - OS specific memory free for shared code
 151  * @hw:   pointer to the HW structure
 152  * @mem:  ptr to mem struct to free
 153  **/
 154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 155 {
 156         /* it's ok to kfree a NULL pointer */
 157         kfree(mem->va);
 158         mem->va = NULL;
 159         mem->size = 0;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_get_lump - find a lump of free generic resource
 166  * @pf: board private structure
 167  * @pile: the pile of resource to search
 168  * @needed: the number of items needed
 169  * @id: an owner id to stick on the items assigned
 170  *
 171  * Returns the base item index of the lump, or negative for error
 172  *
 173  * The search_hint trick and lack of advanced fit-finding only work
 174  * because we're highly likely to have all the same size lump requests.
 175  * Linear search time and any fragmentation should be minimal.
 176  **/
 177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 178                          u16 needed, u16 id)
 179 {
 180         int ret = -ENOMEM;
 181         int i, j;
 182
 183         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 184                 dev_info(&pf->pdev->dev,
 185                          "param err: pile=%p needed=%d id=0x%04x\n",
 186                          pile, needed, id);
 187                 return -EINVAL;
 188         }
 189
 190         /* start the linear search with an imperfect hint */
 191         i = pile->search_hint;
 192         while (i < pile->num_entries) {
 193                 /* skip already allocated entries */
 194                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 195                         i++;
 196                         continue;
 197                 }
 198
 199                 /* do we have enough in this lump? */
 200                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 201                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 202                                 break;
 203                 }
 204
 205                 if (j == needed) {
 206                         /* there was enough, so assign it to the requestor */
 207                         for (j = 0; j < needed; j++)
 208                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 209                         ret = i;
 210                         pile->search_hint = i + j;
 211                         break;
 212                 } else {
 213                         /* not enough, so skip over it and continue looking */
 214                         i += j;
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 /**
 222  * i40e_put_lump - return a lump of generic resource
 223  * @pile: the pile of resource to search
 224  * @index: the base item index
 225  * @id: the owner id of the items assigned
 226  *
 227  * Returns the count of items in the lump
 228  **/
 229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 230 {
 231         int valid_id = (id | I40E_PILE_VALID_BIT);
 232         int count = 0;
 233         int i;
 234
 235         if (!pile || index >= pile->num_entries)
 236                 return -EINVAL;
 237
 238         for (i = index;
 239              i < pile->num_entries && pile->list[i] == valid_id;
 240              i++) {
 241                 pile->list[i] = 0;
 242                 count++;
 243         }
 244
 245         if (count && index < pile->search_hint)
 246                 pile->search_hint = index;
 247
 248         return count;
 249 }
 250
 251 /**
 252  * i40e_service_event_schedule - Schedule the service task to wake up
 253  * @pf: board private structure
 254  *
 255  * If not already scheduled, this puts the task into the work queue
 256  **/
 257 static void i40e_service_event_schedule(struct i40e_pf *pf)
 258 {
 259         if (!test_bit(__I40E_DOWN, &pf->state) &&
 260             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 261             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 262                 schedule_work(&pf->service_task);
 263 }
 264
 265 /**
 266  * i40e_tx_timeout - Respond to a Tx Hang
 267  * @netdev: network interface device structure
 268  *
 269  * If any port has noticed a Tx timeout, it is likely that the whole
 270  * device is munged, not just the one netdev port, so go for the full
 271  * reset.
 272  **/
 273 #ifdef I40E_FCOE
 274 void i40e_tx_timeout(struct net_device *netdev)
 275 #else
 276 static void i40e_tx_timeout(struct net_device *netdev)
 277 #endif
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_vsi *vsi = np->vsi;
 281         struct i40e_pf *pf = vsi->back;
 282
 283         pf->tx_timeout_count++;
 284
 285         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 286                 pf->tx_timeout_recovery_level = 1;
 287         pf->tx_timeout_last_recovery = jiffies;
 288         netdev_info(netdev, "tx_timeout recovery level %d\n",
 289                     pf->tx_timeout_recovery_level);
 290
 291         switch (pf->tx_timeout_recovery_level) {
 292         case 0:
 293                 /* disable and re-enable queues for the VSI */
 294                 if (in_interrupt()) {
 295                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 296                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 297                 } else {
 298                         i40e_vsi_reinit_locked(vsi);
 299                 }
 300                 break;
 301         case 1:
 302                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 2:
 305                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 306                 break;
 307         case 3:
 308                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 309                 break;
 310         default:
 311                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 312                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 313                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 314                 break;
 315         }
 316         i40e_service_event_schedule(pf);
 317         pf->tx_timeout_recovery_level++;
 318 }
 319
 320 /**
 321  * i40e_release_rx_desc - Store the new tail and head values
 322  * @rx_ring: ring to bump
 323  * @val: new head index
 324  **/
 325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 326 {
 327         rx_ring->next_to_use = val;
 328
 329         /* Force memory writes to complete before letting h/w
 330          * know there are new descriptors to fetch.  (Only
 331          * applicable for weak-ordered memory model archs,
 332          * such as IA-64).
 333          */
 334         wmb();
 335         writel(val, rx_ring->tail);
 336 }
 337
 338 /**
 339  * i40e_get_vsi_stats_struct - Get System Network Statistics
 340  * @vsi: the VSI we care about
 341  *
 342  * Returns the address of the device statistics structure.
 343  * The statistics are actually updated from the service task.
 344  **/
 345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 346 {
 347         return &vsi->net_stats;
 348 }
 349
 350 /**
 351  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 352  * @netdev: network interface device structure
 353  *
 354  * Returns the address of the device statistics structure.
 355  * The statistics are actually updated from the service task.
 356  **/
 357 #ifdef I40E_FCOE
 358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 359                                              struct net_device *netdev,
 360                                              struct rtnl_link_stats64 *stats)
 361 #else
 362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 363                                              struct net_device *netdev,
 364                                              struct rtnl_link_stats64 *stats)
 365 #endif
 366 {
 367         struct i40e_netdev_priv *np = netdev_priv(netdev);
 368         struct i40e_ring *tx_ring, *rx_ring;
 369         struct i40e_vsi *vsi = np->vsi;
 370         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 371         int i;
 372
 373         if (test_bit(__I40E_DOWN, &vsi->state))
 374                 return stats;
 375
 376         if (!vsi->tx_rings)
 377                 return stats;
 378
 379         rcu_read_lock();
 380         for (i = 0; i < vsi->num_queue_pairs; i++) {
 381                 u64 bytes, packets;
 382                 unsigned int start;
 383
 384                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 385                 if (!tx_ring)
 386                         continue;
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 390                         packets = tx_ring->stats.packets;
 391                         bytes   = tx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 393
 394                 stats->tx_packets += packets;
 395                 stats->tx_bytes   += bytes;
 396                 rx_ring = &tx_ring[1];
 397
 398                 do {
 399                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 400                         packets = rx_ring->stats.packets;
 401                         bytes   = rx_ring->stats.bytes;
 402                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 403
 404                 stats->rx_packets += packets;
 405                 stats->rx_bytes   += bytes;
 406         }
 407         rcu_read_unlock();
 408
 409         /* following stats updated by i40e_watchdog_subtask() */
 410         stats->multicast        = vsi_stats->multicast;
 411         stats->tx_errors        = vsi_stats->tx_errors;
 412         stats->tx_dropped       = vsi_stats->tx_dropped;
 413         stats->rx_errors        = vsi_stats->rx_errors;
 414         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 415         stats->rx_length_errors = vsi_stats->rx_length_errors;
 416
 417         return stats;
 418 }
 419
 420 /**
 421  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 422  * @vsi: the VSI to have its stats reset
 423  **/
 424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 425 {
 426         struct rtnl_link_stats64 *ns;
 427         int i;
 428
 429         if (!vsi)
 430                 return;
 431
 432         ns = i40e_get_vsi_stats_struct(vsi);
 433         memset(ns, 0, sizeof(*ns));
 434         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 435         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 436         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 437         if (vsi->rx_rings && vsi->rx_rings[0]) {
 438                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 439                         memset(&vsi->rx_rings[i]->stats, 0 ,
 440                                sizeof(vsi->rx_rings[i]->stats));
 441                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 442                                sizeof(vsi->rx_rings[i]->rx_stats));
 443                         memset(&vsi->tx_rings[i]->stats, 0 ,
 444                                sizeof(vsi->tx_rings[i]->stats));
 445                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 446                                sizeof(vsi->tx_rings[i]->tx_stats));
 447                 }
 448         }
 449         vsi->stat_offsets_loaded = false;
 450 }
 451
 452 /**
 453  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 454  * @pf: the PF to be reset
 455  **/
 456 void i40e_pf_reset_stats(struct i40e_pf *pf)
 457 {
 458         int i;
 459
 460         memset(&pf->stats, 0, sizeof(pf->stats));
 461         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 462         pf->stat_offsets_loaded = false;
 463
 464         for (i = 0; i < I40E_MAX_VEB; i++) {
 465                 if (pf->veb[i]) {
 466                         memset(&pf->veb[i]->stats, 0,
 467                                sizeof(pf->veb[i]->stats));
 468                         memset(&pf->veb[i]->stats_offsets, 0,
 469                                sizeof(pf->veb[i]->stats_offsets));
 470                         pf->veb[i]->stat_offsets_loaded = false;
 471                 }
 472         }
 473 }
 474
 475 /**
 476  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 477  * @hw: ptr to the hardware info
 478  * @hireg: the high 32 bit reg to read
 479  * @loreg: the low 32 bit reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  *
 484  * Since the device stats are not reset at PFReset, they likely will not
 485  * be zeroed when the driver starts.  We'll save the first values read
 486  * and use them as offsets to be subtracted from the raw values in order
 487  * to report stats that count from zero.  In the process, we also manage
 488  * the potential roll-over.
 489  **/
 490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 491                                bool offset_loaded, u64 *offset, u64 *stat)
 492 {
 493         u64 new_data;
 494
 495         if (hw->device_id == I40E_DEV_ID_QEMU) {
 496                 new_data = rd32(hw, loreg);
 497                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 498         } else {
 499                 new_data = rd64(hw, loreg);
 500         }
 501         if (!offset_loaded)
 502                 *offset = new_data;
 503         if (likely(new_data >= *offset))
 504                 *stat = new_data - *offset;
 505         else
 506                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 507         *stat &= 0xFFFFFFFFFFFFULL;
 508 }
 509
 510 /**
 511  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 512  * @hw: ptr to the hardware info
 513  * @reg: the hw reg to read
 514  * @offset_loaded: has the initial offset been loaded yet
 515  * @offset: ptr to current offset value
 516  * @stat: ptr to the stat
 517  **/
 518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 519                                bool offset_loaded, u64 *offset, u64 *stat)
 520 {
 521         u32 new_data;
 522
 523         new_data = rd32(hw, reg);
 524         if (!offset_loaded)
 525                 *offset = new_data;
 526         if (likely(new_data >= *offset))
 527                 *stat = (u32)(new_data - *offset);
 528         else
 529                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 530 }
 531
 532 /**
 533  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 534  * @vsi: the VSI to be updated
 535  **/
 536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 537 {
 538         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 539         struct i40e_pf *pf = vsi->back;
 540         struct i40e_hw *hw = &pf->hw;
 541         struct i40e_eth_stats *oes;
 542         struct i40e_eth_stats *es;     /* device's eth stats */
 543
 544         es = &vsi->eth_stats;
 545         oes = &vsi->eth_stats_offsets;
 546
 547         /* Gather up the stats that the hw collects */
 548         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 549                            vsi->stat_offsets_loaded,
 550                            &oes->tx_errors, &es->tx_errors);
 551         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_discards, &es->rx_discards);
 554         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 557         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 558                            vsi->stat_offsets_loaded,
 559                            &oes->tx_errors, &es->tx_errors);
 560
 561         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 562                            I40E_GLV_GORCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->rx_bytes, &es->rx_bytes);
 565         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 566                            I40E_GLV_UPRCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->rx_unicast, &es->rx_unicast);
 569         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 570                            I40E_GLV_MPRCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->rx_multicast, &es->rx_multicast);
 573         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 574                            I40E_GLV_BPRCL(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_broadcast, &es->rx_broadcast);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 579                            I40E_GLV_GOTCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->tx_bytes, &es->tx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 583                            I40E_GLV_UPTCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->tx_unicast, &es->tx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 587                            I40E_GLV_MPTCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->tx_multicast, &es->tx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 591                            I40E_GLV_BPTCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->tx_broadcast, &es->tx_broadcast);
 594         vsi->stat_offsets_loaded = true;
 595 }
 596
 597 /**
 598  * i40e_update_veb_stats - Update Switch component statistics
 599  * @veb: the VEB being updated
 600  **/
 601 static void i40e_update_veb_stats(struct i40e_veb *veb)
 602 {
 603         struct i40e_pf *pf = veb->pf;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607         int idx = 0;
 608
 609         idx = veb->stats_idx;
 610         es = &veb->stats;
 611         oes = &veb->stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_discards, &es->tx_discards);
 617         if (hw->revision_id > 0)
 618                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 619                                    veb->stat_offsets_loaded,
 620                                    &oes->rx_unknown_protocol,
 621                                    &es->rx_unknown_protocol);
 622         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 623                            veb->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 626                            veb->stat_offsets_loaded,
 627                            &oes->rx_unicast, &es->rx_unicast);
 628         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 629                            veb->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 636                            veb->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_unicast, &es->tx_unicast);
 641         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 642                            veb->stat_offsets_loaded,
 643                            &oes->tx_multicast, &es->tx_multicast);
 644         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 645                            veb->stat_offsets_loaded,
 646                            &oes->tx_broadcast, &es->tx_broadcast);
 647         veb->stat_offsets_loaded = true;
 648 }
 649
 650 #ifdef I40E_FCOE
 651 /**
 652  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 653  * @vsi: the VSI that is capable of doing FCoE
 654  **/
 655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 656 {
 657         struct i40e_pf *pf = vsi->back;
 658         struct i40e_hw *hw = &pf->hw;
 659         struct i40e_fcoe_stats *ofs;
 660         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 661         int idx;
 662
 663         if (vsi->type != I40E_VSI_FCOE)
 664                 return;
 665
 666         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 667         fs = &vsi->fcoe_stats;
 668         ofs = &vsi->fcoe_stats_offsets;
 669
 670         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 671                            vsi->fcoe_stat_offsets_loaded,
 672                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 673         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 674                            vsi->fcoe_stat_offsets_loaded,
 675                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 676         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 677                            vsi->fcoe_stat_offsets_loaded,
 678                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 679         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 680                            vsi->fcoe_stat_offsets_loaded,
 681                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 682         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 683                            vsi->fcoe_stat_offsets_loaded,
 684                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 685         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 686                            vsi->fcoe_stat_offsets_loaded,
 687                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 688         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 689                            vsi->fcoe_stat_offsets_loaded,
 690                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 691         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 692                            vsi->fcoe_stat_offsets_loaded,
 693                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 694
 695         vsi->fcoe_stat_offsets_loaded = true;
 696 }
 697
 698 #endif
 699 /**
 700  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 701  * @pf: the corresponding PF
 702  *
 703  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 704  **/
 705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 706 {
 707         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 708         struct i40e_hw_port_stats *nsd = &pf->stats;
 709         struct i40e_hw *hw = &pf->hw;
 710         u64 xoff = 0;
 711         u16 i, v;
 712
 713         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 714             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 715                 return;
 716
 717         xoff = nsd->link_xoff_rx;
 718         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 719                            pf->stat_offsets_loaded,
 720                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 721
 722         /* No new LFC xoff rx */
 723         if (!(nsd->link_xoff_rx - xoff))
 724                 return;
 725
 726         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 727         for (v = 0; v < pf->num_alloc_vsi; v++) {
 728                 struct i40e_vsi *vsi = pf->vsi[v];
 729
 730                 if (!vsi || !vsi->tx_rings[0])
 731                         continue;
 732
 733                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 734                         struct i40e_ring *ring = vsi->tx_rings[i];
 735                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 736                 }
 737         }
 738 }
 739
 740 /**
 741  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 742  * @pf: the corresponding PF
 743  *
 744  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 745  **/
 746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 747 {
 748         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 749         struct i40e_hw_port_stats *nsd = &pf->stats;
 750         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 751         struct i40e_dcbx_config *dcb_cfg;
 752         struct i40e_hw *hw = &pf->hw;
 753         u16 i, v;
 754         u8 tc;
 755
 756         dcb_cfg = &hw->local_dcbx_config;
 757
 758         /* See if DCB enabled with PFC TC */
 759         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 760             !(dcb_cfg->pfc.pfcenable)) {
 761                 i40e_update_link_xoff_rx(pf);
 762                 return;
 763         }
 764
 765         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 766                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 767                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 768                                    pf->stat_offsets_loaded,
 769                                    &osd->priority_xoff_rx[i],
 770                                    &nsd->priority_xoff_rx[i]);
 771
 772                 /* No new PFC xoff rx */
 773                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 774                         continue;
 775                 /* Get the TC for given priority */
 776                 tc = dcb_cfg->etscfg.prioritytable[i];
 777                 xoff[tc] = true;
 778         }
 779
 780         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 781         for (v = 0; v < pf->num_alloc_vsi; v++) {
 782                 struct i40e_vsi *vsi = pf->vsi[v];
 783
 784                 if (!vsi || !vsi->tx_rings[0])
 785                         continue;
 786
 787                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 788                         struct i40e_ring *ring = vsi->tx_rings[i];
 789
 790                         tc = ring->dcb_tc;
 791                         if (xoff[tc])
 792                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 793                                           &ring->state);
 794                 }
 795         }
 796 }
 797
 798 /**
 799  * i40e_update_vsi_stats - Update the vsi statistics counters.
 800  * @vsi: the VSI to be updated
 801  *
 802  * There are a few instances where we store the same stat in a
 803  * couple of different structs.  This is partly because we have
 804  * the netdev stats that need to be filled out, which is slightly
 805  * different from the "eth_stats" defined by the chip and used in
 806  * VF communications.  We sort it out here.
 807  **/
 808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 809 {
 810         struct i40e_pf *pf = vsi->back;
 811         struct rtnl_link_stats64 *ons;
 812         struct rtnl_link_stats64 *ns;   /* netdev stats */
 813         struct i40e_eth_stats *oes;
 814         struct i40e_eth_stats *es;     /* device's eth stats */
 815         u32 tx_restart, tx_busy;
 816         struct i40e_ring *p;
 817         u32 rx_page, rx_buf;
 818         u64 bytes, packets;
 819         unsigned int start;
 820         u64 rx_p, rx_b;
 821         u64 tx_p, tx_b;
 822         u16 q;
 823
 824         if (test_bit(__I40E_DOWN, &vsi->state) ||
 825             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 826                 return;
 827
 828         ns = i40e_get_vsi_stats_struct(vsi);
 829         ons = &vsi->net_stats_offsets;
 830         es = &vsi->eth_stats;
 831         oes = &vsi->eth_stats_offsets;
 832
 833         /* Gather up the netdev and vsi stats that the driver collects
 834          * on the fly during packet processing
 835          */
 836         rx_b = rx_p = 0;
 837         tx_b = tx_p = 0;
 838         tx_restart = tx_busy = 0;
 839         rx_page = 0;
 840         rx_buf = 0;
 841         rcu_read_lock();
 842         for (q = 0; q < vsi->num_queue_pairs; q++) {
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.tx_discards,
 925                            &nsd->eth.tx_discards);
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 928                            I40E_GLPRT_UPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_unicast,
 931                            &nsd->eth.rx_unicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 933                            I40E_GLPRT_MPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_multicast,
 936                            &nsd->eth.rx_multicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 938                            I40E_GLPRT_BPRCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.rx_broadcast,
 941                            &nsd->eth.rx_broadcast);
 942         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 943                            I40E_GLPRT_UPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_unicast,
 946                            &nsd->eth.tx_unicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 948                            I40E_GLPRT_MPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_multicast,
 951                            &nsd->eth.tx_multicast);
 952         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 953                            I40E_GLPRT_BPTCL(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->eth.tx_broadcast,
 956                            &nsd->eth.tx_broadcast);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->tx_dropped_link_down,
 961                            &nsd->tx_dropped_link_down);
 962
 963         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->crc_errors, &nsd->crc_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->illegal_bytes, &nsd->illegal_bytes);
 970
 971         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->mac_local_faults,
 974                            &nsd->mac_local_faults);
 975         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->mac_remote_faults,
 978                            &nsd->mac_remote_faults);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->rx_length_errors,
 983                            &nsd->rx_length_errors);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_rx, &nsd->link_xon_rx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xon_tx, &nsd->link_xon_tx);
 991         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 992         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 995
 996         for (i = 0; i < 8; i++) {
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_rx[i],
1000                                    &nsd->priority_xon_rx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xon_tx[i],
1004                                    &nsd->priority_xon_tx[i]);
1005                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xoff_tx[i],
1008                                    &nsd->priority_xoff_tx[i]);
1009                 i40e_stat_update32(hw,
1010                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1011                                    pf->stat_offsets_loaded,
1012                                    &osd->priority_xon_2_xoff[i],
1013                                    &nsd->priority_xon_2_xoff[i]);
1014         }
1015
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1017                            I40E_GLPRT_PRC64L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_64, &nsd->rx_size_64);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1021                            I40E_GLPRT_PRC127L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_127, &nsd->rx_size_127);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1025                            I40E_GLPRT_PRC255L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_255, &nsd->rx_size_255);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1029                            I40E_GLPRT_PRC511L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_511, &nsd->rx_size_511);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1033                            I40E_GLPRT_PRC1023L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1023, &nsd->rx_size_1023);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1037                            I40E_GLPRT_PRC1522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_1522, &nsd->rx_size_1522);
1040         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1041                            I40E_GLPRT_PRC9522L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_size_big, &nsd->rx_size_big);
1044
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1046                            I40E_GLPRT_PTC64L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_64, &nsd->tx_size_64);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1050                            I40E_GLPRT_PTC127L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_127, &nsd->tx_size_127);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1054                            I40E_GLPRT_PTC255L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_255, &nsd->tx_size_255);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1058                            I40E_GLPRT_PTC511L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_511, &nsd->tx_size_511);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1062                            I40E_GLPRT_PTC1023L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1023, &nsd->tx_size_1023);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1066                            I40E_GLPRT_PTC1522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_1522, &nsd->tx_size_1522);
1069         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1070                            I40E_GLPRT_PTC9522L(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->tx_size_big, &nsd->tx_size_big);
1073
1074         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_undersize, &nsd->rx_undersize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_fragments, &nsd->rx_fragments);
1080         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_oversize, &nsd->rx_oversize);
1083         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_jabber, &nsd->rx_jabber);
1086
1087         /* FDIR stats */
1088         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_atr_match, &nsd->fd_atr_match);
1091         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1092                            pf->stat_offsets_loaded,
1093                            &osd->fd_sb_match, &nsd->fd_sb_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         pf->stat_offsets_loaded = true;
1110 }
1111
1112 /**
1113  * i40e_update_stats - Update the various statistics counters.
1114  * @vsi: the VSI to be updated
1115  *
1116  * Update the various stats for this VSI and its related entities.
1117  **/
1118 void i40e_update_stats(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_pf *pf = vsi->back;
1121
1122         if (vsi == pf->vsi[pf->lan_vsi])
1123                 i40e_update_pf_stats(pf);
1124
1125         i40e_update_vsi_stats(vsi);
1126 #ifdef I40E_FCOE
1127         i40e_update_fcoe_stats(vsi);
1128 #endif
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  * @is_vf: make sure its a vf filter, else doesn't matter
1137  * @is_netdev: make sure its a netdev filter, else doesn't matter
1138  *
1139  * Returns ptr to the filter object or NULL
1140  **/
1141 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1142                                                 u8 *macaddr, s16 vlan,
1143                                                 bool is_vf, bool is_netdev)
1144 {
1145         struct i40e_mac_filter *f;
1146
1147         if (!vsi || !macaddr)
1148                 return NULL;
1149
1150         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1151                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1152                     (vlan == f->vlan)    &&
1153                     (!is_vf || f->is_vf) &&
1154                     (!is_netdev || f->is_netdev))
1155                         return f;
1156         }
1157         return NULL;
1158 }
1159
1160 /**
1161  * i40e_find_mac - Find a mac addr in the macvlan filters list
1162  * @vsi: the VSI to be searched
1163  * @macaddr: the MAC address we are searching for
1164  * @is_vf: make sure its a vf filter, else doesn't matter
1165  * @is_netdev: make sure its a netdev filter, else doesn't matter
1166  *
1167  * Returns the first filter with the provided MAC address or NULL if
1168  * MAC address was not found
1169  **/
1170 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1171                                       bool is_vf, bool is_netdev)
1172 {
1173         struct i40e_mac_filter *f;
1174
1175         if (!vsi || !macaddr)
1176                 return NULL;
1177
1178         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1179                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1180                     (!is_vf || f->is_vf) &&
1181                     (!is_netdev || f->is_netdev))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_mac_filter *f;
1196
1197         /* Only -1 for all the filters denotes not in vlan mode
1198          * so we have to go through all the list in order to make sure
1199          */
1200         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1201                 if (f->vlan >= 0)
1202                         return true;
1203         }
1204
1205         return false;
1206 }
1207
1208 /**
1209  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1210  * @vsi: the VSI to be searched
1211  * @macaddr: the mac address to be filtered
1212  * @is_vf: true if it is a vf
1213  * @is_netdev: true if it is a netdev
1214  *
1215  * Goes through all the macvlan filters and adds a
1216  * macvlan filter for each unique vlan that already exists
1217  *
1218  * Returns first filter found on success, else NULL
1219  **/
1220 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1221                                              bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1227                                       is_vf, is_netdev)) {
1228                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1229                                              is_vf, is_netdev))
1230                                 return NULL;
1231                 }
1232         }
1233
1234         return list_first_entry_or_null(&vsi->mac_filter_list,
1235                                         struct i40e_mac_filter, list);
1236 }
1237
1238 /**
1239  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1240  * @vsi: the PF Main VSI - inappropriate for any other VSI
1241  * @macaddr: the MAC address
1242  *
1243  * Some older firmware configurations set up a default promiscuous VLAN
1244  * filter that needs to be removed.
1245  **/
1246 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1247 {
1248         struct i40e_aqc_remove_macvlan_element_data element;
1249         struct i40e_pf *pf = vsi->back;
1250         i40e_status aq_ret;
1251
1252         /* Only appropriate for the PF main VSI */
1253         if (vsi->type != I40E_VSI_MAIN)
1254                 return -EINVAL;
1255
1256         memset(&element, 0, sizeof(element));
1257         ether_addr_copy(element.mac_addr, macaddr);
1258         element.vlan_tag = 0;
1259         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1260                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1261         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1262         if (aq_ret)
1263                 return -ENOENT;
1264
1265         return 0;
1266 }
1267
1268 /**
1269  * i40e_add_filter - Add a mac/vlan filter to the VSI
1270  * @vsi: the VSI to be searched
1271  * @macaddr: the MAC address
1272  * @vlan: the vlan
1273  * @is_vf: make sure its a vf filter, else doesn't matter
1274  * @is_netdev: make sure its a netdev filter, else doesn't matter
1275  *
1276  * Returns ptr to the filter object or NULL when no memory available.
1277  **/
1278 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1279                                         u8 *macaddr, s16 vlan,
1280                                         bool is_vf, bool is_netdev)
1281 {
1282         struct i40e_mac_filter *f;
1283
1284         if (!vsi || !macaddr)
1285                 return NULL;
1286
1287         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1288         if (!f) {
1289                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1290                 if (!f)
1291                         goto add_filter_out;
1292
1293                 ether_addr_copy(f->macaddr, macaddr);
1294                 f->vlan = vlan;
1295                 f->changed = true;
1296
1297                 INIT_LIST_HEAD(&f->list);
1298                 list_add(&f->list, &vsi->mac_filter_list);
1299         }
1300
1301         /* increment counter and add a new flag if needed */
1302         if (is_vf) {
1303                 if (!f->is_vf) {
1304                         f->is_vf = true;
1305                         f->counter++;
1306                 }
1307         } else if (is_netdev) {
1308                 if (!f->is_netdev) {
1309                         f->is_netdev = true;
1310                         f->counter++;
1311                 }
1312         } else {
1313                 f->counter++;
1314         }
1315
1316         /* changed tells sync_filters_subtask to
1317          * push the filter down to the firmware
1318          */
1319         if (f->changed) {
1320                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1321                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1322         }
1323
1324 add_filter_out:
1325         return f;
1326 }
1327
1328 /**
1329  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1330  * @vsi: the VSI to be searched
1331  * @macaddr: the MAC address
1332  * @vlan: the vlan
1333  * @is_vf: make sure it's a vf filter, else doesn't matter
1334  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1335  **/
1336 void i40e_del_filter(struct i40e_vsi *vsi,
1337                      u8 *macaddr, s16 vlan,
1338                      bool is_vf, bool is_netdev)
1339 {
1340         struct i40e_mac_filter *f;
1341
1342         if (!vsi || !macaddr)
1343                 return;
1344
1345         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1346         if (!f || f->counter == 0)
1347                 return;
1348
1349         if (is_vf) {
1350                 if (f->is_vf) {
1351                         f->is_vf = false;
1352                         f->counter--;
1353                 }
1354         } else if (is_netdev) {
1355                 if (f->is_netdev) {
1356                         f->is_netdev = false;
1357                         f->counter--;
1358                 }
1359         } else {
1360                 /* make sure we don't remove a filter in use by vf or netdev */
1361                 int min_f = 0;
1362                 min_f += (f->is_vf ? 1 : 0);
1363                 min_f += (f->is_netdev ? 1 : 0);
1364
1365                 if (f->counter > min_f)
1366                         f->counter--;
1367         }
1368
1369         /* counter == 0 tells sync_filters_subtask to
1370          * remove the filter from the firmware's list
1371          */
1372         if (f->counter == 0) {
1373                 f->changed = true;
1374                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1375                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1376         }
1377 }
1378
1379 /**
1380  * i40e_set_mac - NDO callback to set mac address
1381  * @netdev: network interface device structure
1382  * @p: pointer to an address structure
1383  *
1384  * Returns 0 on success, negative on failure
1385  **/
1386 #ifdef I40E_FCOE
1387 int i40e_set_mac(struct net_device *netdev, void *p)
1388 #else
1389 static int i40e_set_mac(struct net_device *netdev, void *p)
1390 #endif
1391 {
1392         struct i40e_netdev_priv *np = netdev_priv(netdev);
1393         struct i40e_vsi *vsi = np->vsi;
1394         struct i40e_pf *pf = vsi->back;
1395         struct i40e_hw *hw = &pf->hw;
1396         struct sockaddr *addr = p;
1397         struct i40e_mac_filter *f;
1398
1399         if (!is_valid_ether_addr(addr->sa_data))
1400                 return -EADDRNOTAVAIL;
1401
1402         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1403                 netdev_info(netdev, "already using mac address %pM\n",
1404                             addr->sa_data);
1405                 return 0;
1406         }
1407
1408         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1409             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1410                 return -EADDRNOTAVAIL;
1411
1412         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1413                 netdev_info(netdev, "returning to hw mac address %pM\n",
1414                             hw->mac.addr);
1415         else
1416                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1417
1418         if (vsi->type == I40E_VSI_MAIN) {
1419                 i40e_status ret;
1420                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1421                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1422                                                 addr->sa_data, NULL);
1423                 if (ret) {
1424                         netdev_info(netdev,
1425                                     "Addr change for Main VSI failed: %d\n",
1426                                     ret);
1427                         return -EADDRNOTAVAIL;
1428                 }
1429         }
1430
1431         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1432                 struct i40e_aqc_remove_macvlan_element_data element;
1433
1434                 memset(&element, 0, sizeof(element));
1435                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1436                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1437                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1438         } else {
1439                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1440                                 false, false);
1441         }
1442
1443         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1444                 struct i40e_aqc_add_macvlan_element_data element;
1445
1446                 memset(&element, 0, sizeof(element));
1447                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1448                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1449                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450         } else {
1451                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1452                                     false, false);
1453                 if (f)
1454                         f->is_laa = true;
1455         }
1456
1457         i40e_sync_vsi_filters(vsi);
1458         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1459
1460         return 0;
1461 }
1462
1463 /**
1464  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1465  * @vsi: the VSI being setup
1466  * @ctxt: VSI context structure
1467  * @enabled_tc: Enabled TCs bitmap
1468  * @is_add: True if called before Add VSI
1469  *
1470  * Setup VSI queue mapping for enabled traffic classes.
1471  **/
1472 #ifdef I40E_FCOE
1473 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474                               struct i40e_vsi_context *ctxt,
1475                               u8 enabled_tc,
1476                               bool is_add)
1477 #else
1478 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1479                                      struct i40e_vsi_context *ctxt,
1480                                      u8 enabled_tc,
1481                                      bool is_add)
1482 #endif
1483 {
1484         struct i40e_pf *pf = vsi->back;
1485         u16 sections = 0;
1486         u8 netdev_tc = 0;
1487         u16 numtc = 0;
1488         u16 qcount;
1489         u8 offset;
1490         u16 qmap;
1491         int i;
1492         u16 num_tc_qps = 0;
1493
1494         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1495         offset = 0;
1496
1497         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1498                 /* Find numtc from enabled TC bitmap */
1499                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1500                         if (enabled_tc & (1 << i)) /* TC is enabled */
1501                                 numtc++;
1502                 }
1503                 if (!numtc) {
1504                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1505                         numtc = 1;
1506                 }
1507         } else {
1508                 /* At least TC0 is enabled in case of non-DCB case */
1509                 numtc = 1;
1510         }
1511
1512         vsi->tc_config.numtc = numtc;
1513         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1514         /* Number of queues per enabled TC */
1515         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1516         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518         /* Setup queue offset/count for all TCs for given VSI */
1519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520                 /* See if the given TC is enabled for the given VSI */
1521                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522                         int pow, num_qps;
1523
1524                         switch (vsi->type) {
1525                         case I40E_VSI_MAIN:
1526                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527                                 break;
1528 #ifdef I40E_FCOE
1529                         case I40E_VSI_FCOE:
1530                                 qcount = num_tc_qps;
1531                                 break;
1532 #endif
1533                         case I40E_VSI_FDIR:
1534                         case I40E_VSI_SRIOV:
1535                         case I40E_VSI_VMDQ2:
1536                         default:
1537                                 qcount = num_tc_qps;
1538                                 WARN_ON(i != 0);
1539                                 break;
1540                         }
1541                         vsi->tc_config.tc_info[i].qoffset = offset;
1542                         vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544                         /* find the power-of-2 of the number of queue pairs */
1545                         num_qps = qcount;
1546                         pow = 0;
1547                         while (num_qps && ((1 << pow) < qcount)) {
1548                                 pow++;
1549                                 num_qps >>= 1;
1550                         }
1551
1552                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553                         qmap =
1554                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557                         offset += qcount;
1558                 } else {
1559                         /* TC is not enabled so set the offset to
1560                          * default queue and allocate one queue
1561                          * for the given TC.
1562                          */
1563                         vsi->tc_config.tc_info[i].qoffset = 0;
1564                         vsi->tc_config.tc_info[i].qcount = 1;
1565                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567                         qmap = 0;
1568                 }
1569                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570         }
1571
1572         /* Set actual Tx/Rx queue pairs */
1573         vsi->num_queue_pairs = offset;
1574
1575         /* Scheduler section valid can only be set for ADD VSI */
1576         if (is_add) {
1577                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1578
1579                 ctxt->info.up_enable_bits = enabled_tc;
1580         }
1581         if (vsi->type == I40E_VSI_SRIOV) {
1582                 ctxt->info.mapping_flags |=
1583                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1584                 for (i = 0; i < vsi->num_queue_pairs; i++)
1585                         ctxt->info.queue_mapping[i] =
1586                                                cpu_to_le16(vsi->base_queue + i);
1587         } else {
1588                 ctxt->info.mapping_flags |=
1589                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1590                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1591         }
1592         ctxt->info.valid_sections |= cpu_to_le16(sections);
1593 }
1594
1595 /**
1596  * i40e_set_rx_mode - NDO callback to set the netdev filters
1597  * @netdev: network interface device structure
1598  **/
1599 #ifdef I40E_FCOE
1600 void i40e_set_rx_mode(struct net_device *netdev)
1601 #else
1602 static void i40e_set_rx_mode(struct net_device *netdev)
1603 #endif
1604 {
1605         struct i40e_netdev_priv *np = netdev_priv(netdev);
1606         struct i40e_mac_filter *f, *ftmp;
1607         struct i40e_vsi *vsi = np->vsi;
1608         struct netdev_hw_addr *uca;
1609         struct netdev_hw_addr *mca;
1610         struct netdev_hw_addr *ha;
1611
1612         /* add addr if not already in the filter list */
1613         netdev_for_each_uc_addr(uca, netdev) {
1614                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1615                         if (i40e_is_vsi_in_vlan(vsi))
1616                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1617                                                      false, true);
1618                         else
1619                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1620                                                 false, true);
1621                 }
1622         }
1623
1624         netdev_for_each_mc_addr(mca, netdev) {
1625                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1626                         if (i40e_is_vsi_in_vlan(vsi))
1627                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1628                                                      false, true);
1629                         else
1630                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1631                                                 false, true);
1632                 }
1633         }
1634
1635         /* remove filter if not in netdev list */
1636         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1637                 bool found = false;
1638
1639                 if (!f->is_netdev)
1640                         continue;
1641
1642                 if (is_multicast_ether_addr(f->macaddr)) {
1643                         netdev_for_each_mc_addr(mca, netdev) {
1644                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1645                                         found = true;
1646                                         break;
1647                                 }
1648                         }
1649                 } else {
1650                         netdev_for_each_uc_addr(uca, netdev) {
1651                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1652                                         found = true;
1653                                         break;
1654                                 }
1655                         }
1656
1657                         for_each_dev_addr(netdev, ha) {
1658                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1659                                         found = true;
1660                                         break;
1661                                 }
1662                         }
1663                 }
1664                 if (!found)
1665                         i40e_del_filter(
1666                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1667         }
1668
1669         /* check for other flag changes */
1670         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1671                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1672                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1673         }
1674 }
1675
1676 /**
1677  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1678  * @vsi: ptr to the VSI
1679  *
1680  * Push any outstanding VSI filter changes through the AdminQ.
1681  *
1682  * Returns 0 or error value
1683  **/
1684 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1685 {
1686         struct i40e_mac_filter *f, *ftmp;
1687         bool promisc_forced_on = false;
1688         bool add_happened = false;
1689         int filter_list_len = 0;
1690         u32 changed_flags = 0;
1691         i40e_status aq_ret = 0;
1692         struct i40e_pf *pf;
1693         int num_add = 0;
1694         int num_del = 0;
1695         u16 cmd_flags;
1696
1697         /* empty array typed pointers, kcalloc later */
1698         struct i40e_aqc_add_macvlan_element_data *add_list;
1699         struct i40e_aqc_remove_macvlan_element_data *del_list;
1700
1701         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1702                 usleep_range(1000, 2000);
1703         pf = vsi->back;
1704
1705         if (vsi->netdev) {
1706                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1707                 vsi->current_netdev_flags = vsi->netdev->flags;
1708         }
1709
1710         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1711                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1712
1713                 filter_list_len = pf->hw.aq.asq_buf_size /
1714                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1715                 del_list = kcalloc(filter_list_len,
1716                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1717                             GFP_KERNEL);
1718                 if (!del_list)
1719                         return -ENOMEM;
1720
1721                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722                         if (!f->changed)
1723                                 continue;
1724
1725                         if (f->counter != 0)
1726                                 continue;
1727                         f->changed = false;
1728                         cmd_flags = 0;
1729
1730                         /* add to delete list */
1731                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1732                         del_list[num_del].vlan_tag =
1733                                 cpu_to_le16((u16)(f->vlan ==
1734                                             I40E_VLAN_ANY ? 0 : f->vlan));
1735
1736                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1737                         del_list[num_del].flags = cmd_flags;
1738                         num_del++;
1739
1740                         /* unlink from filter list */
1741                         list_del(&f->list);
1742                         kfree(f);
1743
1744                         /* flush a full buffer */
1745                         if (num_del == filter_list_len) {
1746                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1747                                             vsi->seid, del_list, num_del,
1748                                             NULL);
1749                                 num_del = 0;
1750                                 memset(del_list, 0, sizeof(*del_list));
1751
1752                                 if (aq_ret &&
1753                                     pf->hw.aq.asq_last_status !=
1754                                                               I40E_AQ_RC_ENOENT)
1755                                         dev_info(&pf->pdev->dev,
1756                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1757                                                  aq_ret,
1758                                                  pf->hw.aq.asq_last_status);
1759                         }
1760                 }
1761                 if (num_del) {
1762                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1763                                                      del_list, num_del, NULL);
1764                         num_del = 0;
1765
1766                         if (aq_ret &&
1767                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1768                                 dev_info(&pf->pdev->dev,
1769                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1770                                          aq_ret, pf->hw.aq.asq_last_status);
1771                 }
1772
1773                 kfree(del_list);
1774                 del_list = NULL;
1775
1776                 /* do all the adds now */
1777                 filter_list_len = pf->hw.aq.asq_buf_size /
1778                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1779                 add_list = kcalloc(filter_list_len,
1780                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1781                                GFP_KERNEL);
1782                 if (!add_list)
1783                         return -ENOMEM;
1784
1785                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1786                         if (!f->changed)
1787                                 continue;
1788
1789                         if (f->counter == 0)
1790                                 continue;
1791                         f->changed = false;
1792                         add_happened = true;
1793                         cmd_flags = 0;
1794
1795                         /* add to add array */
1796                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1797                         add_list[num_add].vlan_tag =
1798                                 cpu_to_le16(
1799                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1800                         add_list[num_add].queue_number = 0;
1801
1802                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1803                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1804                         num_add++;
1805
1806                         /* flush a full buffer */
1807                         if (num_add == filter_list_len) {
1808                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1809                                                              add_list, num_add,
1810                                                              NULL);
1811                                 num_add = 0;
1812
1813                                 if (aq_ret)
1814                                         break;
1815                                 memset(add_list, 0, sizeof(*add_list));
1816                         }
1817                 }
1818                 if (num_add) {
1819                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1820                                                      add_list, num_add, NULL);
1821                         num_add = 0;
1822                 }
1823                 kfree(add_list);
1824                 add_list = NULL;
1825
1826                 if (add_happened && aq_ret &&
1827                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1828                         dev_info(&pf->pdev->dev,
1829                                  "add filter failed, err %d, aq_err %d\n",
1830                                  aq_ret, pf->hw.aq.asq_last_status);
1831                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1832                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833                                       &vsi->state)) {
1834                                 promisc_forced_on = true;
1835                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1836                                         &vsi->state);
1837                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1838                         }
1839                 }
1840         }
1841
1842         /* check for changes in promiscuous modes */
1843         if (changed_flags & IFF_ALLMULTI) {
1844                 bool cur_multipromisc;
1845                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1846                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1847                                                                vsi->seid,
1848                                                                cur_multipromisc,
1849                                                                NULL);
1850                 if (aq_ret)
1851                         dev_info(&pf->pdev->dev,
1852                                  "set multi promisc failed, err %d, aq_err %d\n",
1853                                  aq_ret, pf->hw.aq.asq_last_status);
1854         }
1855         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1856                 bool cur_promisc;
1857                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1858                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859                                         &vsi->state));
1860                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1861                                                              vsi->seid,
1862                                                              cur_promisc, NULL);
1863                 if (aq_ret)
1864                         dev_info(&pf->pdev->dev,
1865                                  "set uni promisc failed, err %d, aq_err %d\n",
1866                                  aq_ret, pf->hw.aq.asq_last_status);
1867                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1868                                                    vsi->seid,
1869                                                    cur_promisc, NULL);
1870                 if (aq_ret)
1871                         dev_info(&pf->pdev->dev,
1872                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1873                                  aq_ret, pf->hw.aq.asq_last_status);
1874         }
1875
1876         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1877         return 0;
1878 }
1879
1880 /**
1881  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1882  * @pf: board private structure
1883  **/
1884 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1885 {
1886         int v;
1887
1888         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1889                 return;
1890         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1891
1892         for (v = 0; v < pf->num_alloc_vsi; v++) {
1893                 if (pf->vsi[v] &&
1894                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1895                         i40e_sync_vsi_filters(pf->vsi[v]);
1896         }
1897 }
1898
1899 /**
1900  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1901  * @netdev: network interface device structure
1902  * @new_mtu: new value for maximum frame size
1903  *
1904  * Returns 0 on success, negative on failure
1905  **/
1906 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1907 {
1908         struct i40e_netdev_priv *np = netdev_priv(netdev);
1909         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1910         struct i40e_vsi *vsi = np->vsi;
1911
1912         /* MTU < 68 is an error and causes problems on some kernels */
1913         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1914                 return -EINVAL;
1915
1916         netdev_info(netdev, "changing MTU from %d to %d\n",
1917                     netdev->mtu, new_mtu);
1918         netdev->mtu = new_mtu;
1919         if (netif_running(netdev))
1920                 i40e_vsi_reinit_locked(vsi);
1921
1922         return 0;
1923 }
1924
1925 /**
1926  * i40e_ioctl - Access the hwtstamp interface
1927  * @netdev: network interface device structure
1928  * @ifr: interface request data
1929  * @cmd: ioctl command
1930  **/
1931 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1932 {
1933         struct i40e_netdev_priv *np = netdev_priv(netdev);
1934         struct i40e_pf *pf = np->vsi->back;
1935
1936         switch (cmd) {
1937         case SIOCGHWTSTAMP:
1938                 return i40e_ptp_get_ts_config(pf, ifr);
1939         case SIOCSHWTSTAMP:
1940                 return i40e_ptp_set_ts_config(pf, ifr);
1941         default:
1942                 return -EOPNOTSUPP;
1943         }
1944 }
1945
1946 /**
1947  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1948  * @vsi: the vsi being adjusted
1949  **/
1950 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1951 {
1952         struct i40e_vsi_context ctxt;
1953         i40e_status ret;
1954
1955         if ((vsi->info.valid_sections &
1956              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1957             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1958                 return;  /* already enabled */
1959
1960         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1961         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1962                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1963
1964         ctxt.seid = vsi->seid;
1965         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1966         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1967         if (ret) {
1968                 dev_info(&vsi->back->pdev->dev,
1969                          "%s: update vsi failed, aq_err=%d\n",
1970                          __func__, vsi->back->hw.aq.asq_last_status);
1971         }
1972 }
1973
1974 /**
1975  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1976  * @vsi: the vsi being adjusted
1977  **/
1978 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1979 {
1980         struct i40e_vsi_context ctxt;
1981         i40e_status ret;
1982
1983         if ((vsi->info.valid_sections &
1984              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1985             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1986              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1987                 return;  /* already disabled */
1988
1989         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1990         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1991                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1992
1993         ctxt.seid = vsi->seid;
1994         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1995         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1996         if (ret) {
1997                 dev_info(&vsi->back->pdev->dev,
1998                          "%s: update vsi failed, aq_err=%d\n",
1999                          __func__, vsi->back->hw.aq.asq_last_status);
2000         }
2001 }
2002
2003 /**
2004  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2005  * @netdev: network interface to be adjusted
2006  * @features: netdev features to test if VLAN offload is enabled or not
2007  **/
2008 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2009 {
2010         struct i40e_netdev_priv *np = netdev_priv(netdev);
2011         struct i40e_vsi *vsi = np->vsi;
2012
2013         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2014                 i40e_vlan_stripping_enable(vsi);
2015         else
2016                 i40e_vlan_stripping_disable(vsi);
2017 }
2018
2019 /**
2020  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2021  * @vsi: the vsi being configured
2022  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2023  **/
2024 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2025 {
2026         struct i40e_mac_filter *f, *add_f;
2027         bool is_netdev, is_vf;
2028
2029         is_vf = (vsi->type == I40E_VSI_SRIOV);
2030         is_netdev = !!(vsi->netdev);
2031
2032         if (is_netdev) {
2033                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2034                                         is_vf, is_netdev);
2035                 if (!add_f) {
2036                         dev_info(&vsi->back->pdev->dev,
2037                                  "Could not add vlan filter %d for %pM\n",
2038                                  vid, vsi->netdev->dev_addr);
2039                         return -ENOMEM;
2040                 }
2041         }
2042
2043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2045                 if (!add_f) {
2046                         dev_info(&vsi->back->pdev->dev,
2047                                  "Could not add vlan filter %d for %pM\n",
2048                                  vid, f->macaddr);
2049                         return -ENOMEM;
2050                 }
2051         }
2052
2053         /* Now if we add a vlan tag, make sure to check if it is the first
2054          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2055          * with 0, so we now accept untagged and specified tagged traffic
2056          * (and not any taged and untagged)
2057          */
2058         if (vid > 0) {
2059                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2060                                                   I40E_VLAN_ANY,
2061                                                   is_vf, is_netdev)) {
2062                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2063                                         I40E_VLAN_ANY, is_vf, is_netdev);
2064                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2065                                                 is_vf, is_netdev);
2066                         if (!add_f) {
2067                                 dev_info(&vsi->back->pdev->dev,
2068                                          "Could not add filter 0 for %pM\n",
2069                                          vsi->netdev->dev_addr);
2070                                 return -ENOMEM;
2071                         }
2072                 }
2073         }
2074
2075         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2076         if (vid > 0 && !vsi->info.pvid) {
2077                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2078                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2079                                              is_vf, is_netdev)) {
2080                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2081                                                 is_vf, is_netdev);
2082                                 add_f = i40e_add_filter(vsi, f->macaddr,
2083                                                         0, is_vf, is_netdev);
2084                                 if (!add_f) {
2085                                         dev_info(&vsi->back->pdev->dev,
2086                                                  "Could not add filter 0 for %pM\n",
2087                                                  f->macaddr);
2088                                         return -ENOMEM;
2089                                 }
2090                         }
2091                 }
2092         }
2093
2094         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2095             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2096                 return 0;
2097
2098         return i40e_sync_vsi_filters(vsi);
2099 }
2100
2101 /**
2102  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2103  * @vsi: the vsi being configured
2104  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2105  *
2106  * Return: 0 on success or negative otherwise
2107  **/
2108 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2109 {
2110         struct net_device *netdev = vsi->netdev;
2111         struct i40e_mac_filter *f, *add_f;
2112         bool is_vf, is_netdev;
2113         int filter_count = 0;
2114
2115         is_vf = (vsi->type == I40E_VSI_SRIOV);
2116         is_netdev = !!(netdev);
2117
2118         if (is_netdev)
2119                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2120
2121         list_for_each_entry(f, &vsi->mac_filter_list, list)
2122                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2123
2124         /* go through all the filters for this VSI and if there is only
2125          * vid == 0 it means there are no other filters, so vid 0 must
2126          * be replaced with -1. This signifies that we should from now
2127          * on accept any traffic (with any tag present, or untagged)
2128          */
2129         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2130                 if (is_netdev) {
2131                         if (f->vlan &&
2132                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2133                                 filter_count++;
2134                 }
2135
2136                 if (f->vlan)
2137                         filter_count++;
2138         }
2139
2140         if (!filter_count && is_netdev) {
2141                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2142                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2143                                     is_vf, is_netdev);
2144                 if (!f) {
2145                         dev_info(&vsi->back->pdev->dev,
2146                                  "Could not add filter %d for %pM\n",
2147                                  I40E_VLAN_ANY, netdev->dev_addr);
2148                         return -ENOMEM;
2149                 }
2150         }
2151
2152         if (!filter_count) {
2153                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2154                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2155                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2156                                             is_vf, is_netdev);
2157                         if (!add_f) {
2158                                 dev_info(&vsi->back->pdev->dev,
2159                                          "Could not add filter %d for %pM\n",
2160                                          I40E_VLAN_ANY, f->macaddr);
2161                                 return -ENOMEM;
2162                         }
2163                 }
2164         }
2165
2166         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2167             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2168                 return 0;
2169
2170         return i40e_sync_vsi_filters(vsi);
2171 }
2172
2173 /**
2174  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2175  * @netdev: network interface to be adjusted
2176  * @vid: vlan id to be added
2177  *
2178  * net_device_ops implementation for adding vlan ids
2179  **/
2180 #ifdef I40E_FCOE
2181 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2182                          __always_unused __be16 proto, u16 vid)
2183 #else
2184 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2185                                 __always_unused __be16 proto, u16 vid)
2186 #endif
2187 {
2188         struct i40e_netdev_priv *np = netdev_priv(netdev);
2189         struct i40e_vsi *vsi = np->vsi;
2190         int ret = 0;
2191
2192         if (vid > 4095)
2193                 return -EINVAL;
2194
2195         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2196
2197         /* If the network stack called us with vid = 0 then
2198          * it is asking to receive priority tagged packets with
2199          * vlan id 0.  Our HW receives them by default when configured
2200          * to receive untagged packets so there is no need to add an
2201          * extra filter for vlan 0 tagged packets.
2202          */
2203         if (vid)
2204                 ret = i40e_vsi_add_vlan(vsi, vid);
2205
2206         if (!ret && (vid < VLAN_N_VID))
2207                 set_bit(vid, vsi->active_vlans);
2208
2209         return ret;
2210 }
2211
2212 /**
2213  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2214  * @netdev: network interface to be adjusted
2215  * @vid: vlan id to be removed
2216  *
2217  * net_device_ops implementation for removing vlan ids
2218  **/
2219 #ifdef I40E_FCOE
2220 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2221                           __always_unused __be16 proto, u16 vid)
2222 #else
2223 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2224                                  __always_unused __be16 proto, u16 vid)
2225 #endif
2226 {
2227         struct i40e_netdev_priv *np = netdev_priv(netdev);
2228         struct i40e_vsi *vsi = np->vsi;
2229
2230         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2231
2232         /* return code is ignored as there is nothing a user
2233          * can do about failure to remove and a log message was
2234          * already printed from the other function
2235          */
2236         i40e_vsi_kill_vlan(vsi, vid);
2237
2238         clear_bit(vid, vsi->active_vlans);
2239
2240         return 0;
2241 }
2242
2243 /**
2244  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2245  * @vsi: the vsi being brought back up
2246  **/
2247 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2248 {
2249         u16 vid;
2250
2251         if (!vsi->netdev)
2252                 return;
2253
2254         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2255
2256         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2257                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2258                                      vid);
2259 }
2260
2261 /**
2262  * i40e_vsi_add_pvid - Add pvid for the VSI
2263  * @vsi: the vsi being adjusted
2264  * @vid: the vlan id to set as a PVID
2265  **/
2266 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2267 {
2268         struct i40e_vsi_context ctxt;
2269         i40e_status aq_ret;
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.pvid = cpu_to_le16(vid);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2274                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2275                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2276
2277         ctxt.seid = vsi->seid;
2278         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2279         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2280         if (aq_ret) {
2281                 dev_info(&vsi->back->pdev->dev,
2282                          "%s: update vsi failed, aq_err=%d\n",
2283                          __func__, vsi->back->hw.aq.asq_last_status);
2284                 return -ENOENT;
2285         }
2286
2287         return 0;
2288 }
2289
2290 /**
2291  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2292  * @vsi: the vsi being adjusted
2293  *
2294  * Just use the vlan_rx_register() service to put it back to normal
2295  **/
2296 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2297 {
2298         i40e_vlan_stripping_disable(vsi);
2299
2300         vsi->info.pvid = 0;
2301 }
2302
2303 /**
2304  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2305  * @vsi: ptr to the VSI
2306  *
2307  * If this function returns with an error, then it's possible one or
2308  * more of the rings is populated (while the rest are not).  It is the
2309  * callers duty to clean those orphaned rings.
2310  *
2311  * Return 0 on success, negative on failure
2312  **/
2313 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2314 {
2315         int i, err = 0;
2316
2317         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2318                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2319
2320         return err;
2321 }
2322
2323 /**
2324  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2325  * @vsi: ptr to the VSI
2326  *
2327  * Free VSI's transmit software resources
2328  **/
2329 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2330 {
2331         int i;
2332
2333         if (!vsi->tx_rings)
2334                 return;
2335
2336         for (i = 0; i < vsi->num_queue_pairs; i++)
2337                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338                         i40e_free_tx_resources(vsi->tx_rings[i]);
2339 }
2340
2341 /**
2342  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2343  * @vsi: ptr to the VSI
2344  *
2345  * If this function returns with an error, then it's possible one or
2346  * more of the rings is populated (while the rest are not).  It is the
2347  * callers duty to clean those orphaned rings.
2348  *
2349  * Return 0 on success, negative on failure
2350  **/
2351 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2352 {
2353         int i, err = 0;
2354
2355         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2356                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2357 #ifdef I40E_FCOE
2358         i40e_fcoe_setup_ddp_resources(vsi);
2359 #endif
2360         return err;
2361 }
2362
2363 /**
2364  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2365  * @vsi: ptr to the VSI
2366  *
2367  * Free all receive software resources
2368  **/
2369 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2370 {
2371         int i;
2372
2373         if (!vsi->rx_rings)
2374                 return;
2375
2376         for (i = 0; i < vsi->num_queue_pairs; i++)
2377                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378                         i40e_free_rx_resources(vsi->rx_rings[i]);
2379 #ifdef I40E_FCOE
2380         i40e_fcoe_free_ddp_resources(vsi);
2381 #endif
2382 }
2383
2384 /**
2385  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2386  * @ring: The Tx ring to configure
2387  *
2388  * Configure the Tx descriptor ring in the HMC context.
2389  **/
2390 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2391 {
2392         struct i40e_vsi *vsi = ring->vsi;
2393         u16 pf_q = vsi->base_queue + ring->queue_index;
2394         struct i40e_hw *hw = &vsi->back->hw;
2395         struct i40e_hmc_obj_txq tx_ctx;
2396         i40e_status err = 0;
2397         u32 qtx_ctl = 0;
2398
2399         /* some ATR related tx ring init */
2400         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2401                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2402                 ring->atr_count = 0;
2403         } else {
2404                 ring->atr_sample_rate = 0;
2405         }
2406
2407         /* initialize XPS */
2408         if (ring->q_vector && ring->netdev &&
2409             vsi->tc_config.numtc <= 1 &&
2410             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2411                 netif_set_xps_queue(ring->netdev,
2412                                     &ring->q_vector->affinity_mask,
2413                                     ring->queue_index);
2414
2415         /* clear the context structure first */
2416         memset(&tx_ctx, 0, sizeof(tx_ctx));
2417
2418         tx_ctx.new_context = 1;
2419         tx_ctx.base = (ring->dma / 128);
2420         tx_ctx.qlen = ring->count;
2421         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2422                                                I40E_FLAG_FD_ATR_ENABLED));
2423 #ifdef I40E_FCOE
2424         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2425 #endif
2426         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2427         /* FDIR VSI tx ring can still use RS bit and writebacks */
2428         if (vsi->type != I40E_VSI_FDIR)
2429                 tx_ctx.head_wb_ena = 1;
2430         tx_ctx.head_wb_addr = ring->dma +
2431                               (ring->count * sizeof(struct i40e_tx_desc));
2432
2433         /* As part of VSI creation/update, FW allocates certain
2434          * Tx arbitration queue sets for each TC enabled for
2435          * the VSI. The FW returns the handles to these queue
2436          * sets as part of the response buffer to Add VSI,
2437          * Update VSI, etc. AQ commands. It is expected that
2438          * these queue set handles be associated with the Tx
2439          * queues by the driver as part of the TX queue context
2440          * initialization. This has to be done regardless of
2441          * DCB as by default everything is mapped to TC0.
2442          */
2443         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2444         tx_ctx.rdylist_act = 0;
2445
2446         /* clear the context in the HMC */
2447         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2448         if (err) {
2449                 dev_info(&vsi->back->pdev->dev,
2450                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2451                          ring->queue_index, pf_q, err);
2452                 return -ENOMEM;
2453         }
2454
2455         /* set the context in the HMC */
2456         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2457         if (err) {
2458                 dev_info(&vsi->back->pdev->dev,
2459                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2460                          ring->queue_index, pf_q, err);
2461                 return -ENOMEM;
2462         }
2463
2464         /* Now associate this queue with this PCI function */
2465         if (vsi->type == I40E_VSI_VMDQ2) {
2466                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2467                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2468                            I40E_QTX_CTL_VFVM_INDX_MASK;
2469         } else {
2470                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2471         }
2472
2473         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2474                     I40E_QTX_CTL_PF_INDX_MASK);
2475         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2476         i40e_flush(hw);
2477
2478         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2479
2480         /* cache tail off for easier writes later */
2481         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2482
2483         return 0;
2484 }
2485
2486 /**
2487  * i40e_configure_rx_ring - Configure a receive ring context
2488  * @ring: The Rx ring to configure
2489  *
2490  * Configure the Rx descriptor ring in the HMC context.
2491  **/
2492 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2493 {
2494         struct i40e_vsi *vsi = ring->vsi;
2495         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2496         u16 pf_q = vsi->base_queue + ring->queue_index;
2497         struct i40e_hw *hw = &vsi->back->hw;
2498         struct i40e_hmc_obj_rxq rx_ctx;
2499         i40e_status err = 0;
2500
2501         ring->state = 0;
2502
2503         /* clear the context structure first */
2504         memset(&rx_ctx, 0, sizeof(rx_ctx));
2505
2506         ring->rx_buf_len = vsi->rx_buf_len;
2507         ring->rx_hdr_len = vsi->rx_hdr_len;
2508
2509         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2510         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2511
2512         rx_ctx.base = (ring->dma / 128);
2513         rx_ctx.qlen = ring->count;
2514
2515         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2516                 set_ring_16byte_desc_enabled(ring);
2517                 rx_ctx.dsize = 0;
2518         } else {
2519                 rx_ctx.dsize = 1;
2520         }
2521
2522         rx_ctx.dtype = vsi->dtype;
2523         if (vsi->dtype) {
2524                 set_ring_ps_enabled(ring);
2525                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2526                                   I40E_RX_SPLIT_IP      |
2527                                   I40E_RX_SPLIT_TCP_UDP |
2528                                   I40E_RX_SPLIT_SCTP;
2529         } else {
2530                 rx_ctx.hsplit_0 = 0;
2531         }
2532
2533         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2534                                   (chain_len * ring->rx_buf_len));
2535         if (hw->revision_id == 0)
2536                 rx_ctx.lrxqthresh = 0;
2537         else
2538                 rx_ctx.lrxqthresh = 2;
2539         rx_ctx.crcstrip = 1;
2540         rx_ctx.l2tsel = 1;
2541         rx_ctx.showiv = 1;
2542 #ifdef I40E_FCOE
2543         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2544 #endif
2545         /* set the prefena field to 1 because the manual says to */
2546         rx_ctx.prefena = 1;
2547
2548         /* clear the context in the HMC */
2549         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2550         if (err) {
2551                 dev_info(&vsi->back->pdev->dev,
2552                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2553                          ring->queue_index, pf_q, err);
2554                 return -ENOMEM;
2555         }
2556
2557         /* set the context in the HMC */
2558         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2559         if (err) {
2560                 dev_info(&vsi->back->pdev->dev,
2561                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2562                          ring->queue_index, pf_q, err);
2563                 return -ENOMEM;
2564         }
2565
2566         /* cache tail for quicker writes, and clear the reg before use */
2567         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2568         writel(0, ring->tail);
2569
2570         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2571
2572         return 0;
2573 }
2574
2575 /**
2576  * i40e_vsi_configure_tx - Configure the VSI for Tx
2577  * @vsi: VSI structure describing this set of rings and resources
2578  *
2579  * Configure the Tx VSI for operation.
2580  **/
2581 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2582 {
2583         int err = 0;
2584         u16 i;
2585
2586         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2587                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2588
2589         return err;
2590 }
2591
2592 /**
2593  * i40e_vsi_configure_rx - Configure the VSI for Rx
2594  * @vsi: the VSI being configured
2595  *
2596  * Configure the Rx VSI for operation.
2597  **/
2598 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2599 {
2600         int err = 0;
2601         u16 i;
2602
2603         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2604                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2605                                + ETH_FCS_LEN + VLAN_HLEN;
2606         else
2607                 vsi->max_frame = I40E_RXBUFFER_2048;
2608
2609         /* figure out correct receive buffer length */
2610         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2611                                     I40E_FLAG_RX_PS_ENABLED)) {
2612         case I40E_FLAG_RX_1BUF_ENABLED:
2613                 vsi->rx_hdr_len = 0;
2614                 vsi->rx_buf_len = vsi->max_frame;
2615                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2616                 break;
2617         case I40E_FLAG_RX_PS_ENABLED:
2618                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2619                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2620                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2621                 break;
2622         default:
2623                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2624                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2625                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2626                 break;
2627         }
2628
2629 #ifdef I40E_FCOE
2630         /* setup rx buffer for FCoE */
2631         if ((vsi->type == I40E_VSI_FCOE) &&
2632             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2633                 vsi->rx_hdr_len = 0;
2634                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2635                 vsi->max_frame = I40E_RXBUFFER_3072;
2636                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2637         }
2638
2639 #endif /* I40E_FCOE */
2640         /* round up for the chip's needs */
2641         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2642                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2643         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2644                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2645
2646         /* set up individual rings */
2647         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2648                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2649
2650         return err;
2651 }
2652
2653 /**
2654  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2655  * @vsi: ptr to the VSI
2656  **/
2657 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2658 {
2659         struct i40e_ring *tx_ring, *rx_ring;
2660         u16 qoffset, qcount;
2661         int i, n;
2662
2663         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2664                 return;
2665
2666         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2667                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2668                         continue;
2669
2670                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2671                 qcount = vsi->tc_config.tc_info[n].qcount;
2672                 for (i = qoffset; i < (qoffset + qcount); i++) {
2673                         rx_ring = vsi->rx_rings[i];
2674                         tx_ring = vsi->tx_rings[i];
2675                         rx_ring->dcb_tc = n;
2676                         tx_ring->dcb_tc = n;
2677                 }
2678         }
2679 }
2680
2681 /**
2682  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2683  * @vsi: ptr to the VSI
2684  **/
2685 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2686 {
2687         if (vsi->netdev)
2688                 i40e_set_rx_mode(vsi->netdev);
2689 }
2690
2691 /**
2692  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2693  * @vsi: Pointer to the targeted VSI
2694  *
2695  * This function replays the hlist on the hw where all the SB Flow Director
2696  * filters were saved.
2697  **/
2698 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2699 {
2700         struct i40e_fdir_filter *filter;
2701         struct i40e_pf *pf = vsi->back;
2702         struct hlist_node *node;
2703
2704         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2705                 return;
2706
2707         hlist_for_each_entry_safe(filter, node,
2708                                   &pf->fdir_filter_list, fdir_node) {
2709                 i40e_add_del_fdir(vsi, filter, true);
2710         }
2711 }
2712
2713 /**
2714  * i40e_vsi_configure - Set up the VSI for action
2715  * @vsi: the VSI being configured
2716  **/
2717 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2718 {
2719         int err;
2720
2721         i40e_set_vsi_rx_mode(vsi);
2722         i40e_restore_vlan(vsi);
2723         i40e_vsi_config_dcb_rings(vsi);
2724         err = i40e_vsi_configure_tx(vsi);
2725         if (!err)
2726                 err = i40e_vsi_configure_rx(vsi);
2727
2728         return err;
2729 }
2730
2731 /**
2732  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2733  * @vsi: the VSI being configured
2734  **/
2735 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2736 {
2737         struct i40e_pf *pf = vsi->back;
2738         struct i40e_q_vector *q_vector;
2739         struct i40e_hw *hw = &pf->hw;
2740         u16 vector;
2741         int i, q;
2742         u32 val;
2743         u32 qp;
2744
2745         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2746          * and PFINT_LNKLSTn registers, e.g.:
2747          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2748          */
2749         qp = vsi->base_queue;
2750         vector = vsi->base_vector;
2751         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2752                 q_vector = vsi->q_vectors[i];
2753                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2754                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2755                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2756                      q_vector->rx.itr);
2757                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2758                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2759                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2760                      q_vector->tx.itr);
2761
2762                 /* Linked list for the queuepairs assigned to this vector */
2763                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2764                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2765                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2766                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2767                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2768                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2769                               (I40E_QUEUE_TYPE_TX
2770                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2771
2772                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2773
2774                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2775                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2776                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2777                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2778                               (I40E_QUEUE_TYPE_RX
2779                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2780
2781                         /* Terminate the linked list */
2782                         if (q == (q_vector->num_ringpairs - 1))
2783                                 val |= (I40E_QUEUE_END_OF_LIST
2784                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2785
2786                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2787                         qp++;
2788                 }
2789         }
2790
2791         i40e_flush(hw);
2792 }
2793
2794 /**
2795  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2796  * @hw: ptr to the hardware info
2797  **/
2798 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2799 {
2800         u32 val;
2801
2802         /* clear things first */
2803         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2804         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2805
2806         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2807               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2808               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2809               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2810               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2811               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2812               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2813               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2814               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2815
2816         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2817
2818         /* SW_ITR_IDX = 0, but don't change INTENA */
2819         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2820                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2821
2822         /* OTHER_ITR_IDX = 0 */
2823         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2824 }
2825
2826 /**
2827  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2828  * @vsi: the VSI being configured
2829  **/
2830 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2831 {
2832         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2833         struct i40e_pf *pf = vsi->back;
2834         struct i40e_hw *hw = &pf->hw;
2835         u32 val;
2836
2837         /* set the ITR configuration */
2838         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2839         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2840         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2841         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2842         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2843         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2844
2845         i40e_enable_misc_int_causes(hw);
2846
2847         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2848         wr32(hw, I40E_PFINT_LNKLST0, 0);
2849
2850         /* Associate the queue pair to the vector and enable the queue int */
2851         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2852               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2853               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2854
2855         wr32(hw, I40E_QINT_RQCTL(0), val);
2856
2857         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2858               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2859               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2860
2861         wr32(hw, I40E_QINT_TQCTL(0), val);
2862         i40e_flush(hw);
2863 }
2864
2865 /**
2866  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2867  * @pf: board private structure
2868  **/
2869 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2870 {
2871         struct i40e_hw *hw = &pf->hw;
2872
2873         wr32(hw, I40E_PFINT_DYN_CTL0,
2874              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2875         i40e_flush(hw);
2876 }
2877
2878 /**
2879  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2880  * @pf: board private structure
2881  **/
2882 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2883 {
2884         struct i40e_hw *hw = &pf->hw;
2885         u32 val;
2886
2887         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2888               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2889               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2890
2891         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2892         i40e_flush(hw);
2893 }
2894
2895 /**
2896  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2897  * @vsi: pointer to a vsi
2898  * @vector: enable a particular Hw Interrupt vector
2899  **/
2900 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2901 {
2902         struct i40e_pf *pf = vsi->back;
2903         struct i40e_hw *hw = &pf->hw;
2904         u32 val;
2905
2906         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2907               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2908               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2909         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2910         /* skip the flush */
2911 }
2912
2913 /**
2914  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2915  * @vsi: pointer to a vsi
2916  * @vector: enable a particular Hw Interrupt vector
2917  **/
2918 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2919 {
2920         struct i40e_pf *pf = vsi->back;
2921         struct i40e_hw *hw = &pf->hw;
2922         u32 val;
2923
2924         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2925         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2926         i40e_flush(hw);
2927 }
2928
2929 /**
2930  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2931  * @irq: interrupt number
2932  * @data: pointer to a q_vector
2933  **/
2934 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2935 {
2936         struct i40e_q_vector *q_vector = data;
2937
2938         if (!q_vector->tx.ring && !q_vector->rx.ring)
2939                 return IRQ_HANDLED;
2940
2941         napi_schedule(&q_vector->napi);
2942
2943         return IRQ_HANDLED;
2944 }
2945
2946 /**
2947  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2948  * @vsi: the VSI being configured
2949  * @basename: name for the vector
2950  *
2951  * Allocates MSI-X vectors and requests interrupts from the kernel.
2952  **/
2953 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2954 {
2955         int q_vectors = vsi->num_q_vectors;
2956         struct i40e_pf *pf = vsi->back;
2957         int base = vsi->base_vector;
2958         int rx_int_idx = 0;
2959         int tx_int_idx = 0;
2960         int vector, err;
2961
2962         for (vector = 0; vector < q_vectors; vector++) {
2963                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2964
2965                 if (q_vector->tx.ring && q_vector->rx.ring) {
2966                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2967                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2968                         tx_int_idx++;
2969                 } else if (q_vector->rx.ring) {
2970                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2971                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2972                 } else if (q_vector->tx.ring) {
2973                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2974                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2975                 } else {
2976                         /* skip this unused q_vector */
2977                         continue;
2978                 }
2979                 err = request_irq(pf->msix_entries[base + vector].vector,
2980                                   vsi->irq_handler,
2981                                   0,
2982                                   q_vector->name,
2983                                   q_vector);
2984                 if (err) {
2985                         dev_info(&pf->pdev->dev,
2986                                  "%s: request_irq failed, error: %d\n",
2987                                  __func__, err);
2988                         goto free_queue_irqs;
2989                 }
2990                 /* assign the mask for this irq */
2991                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2992                                       &q_vector->affinity_mask);
2993         }
2994
2995         vsi->irqs_ready = true;
2996         return 0;
2997
2998 free_queue_irqs:
2999         while (vector) {
3000                 vector--;
3001                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3002                                       NULL);
3003                 free_irq(pf->msix_entries[base + vector].vector,
3004                          &(vsi->q_vectors[vector]));
3005         }
3006         return err;
3007 }
3008
3009 /**
3010  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3011  * @vsi: the VSI being un-configured
3012  **/
3013 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3014 {
3015         struct i40e_pf *pf = vsi->back;
3016         struct i40e_hw *hw = &pf->hw;
3017         int base = vsi->base_vector;
3018         int i;
3019
3020         for (i = 0; i < vsi->num_queue_pairs; i++) {
3021                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3022                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3023         }
3024
3025         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3026                 for (i = vsi->base_vector;
3027                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3028                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3029
3030                 i40e_flush(hw);
3031                 for (i = 0; i < vsi->num_q_vectors; i++)
3032                         synchronize_irq(pf->msix_entries[i + base].vector);
3033         } else {
3034                 /* Legacy and MSI mode - this stops all interrupt handling */
3035                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3036                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3037                 i40e_flush(hw);
3038                 synchronize_irq(pf->pdev->irq);
3039         }
3040 }
3041
3042 /**
3043  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3044  * @vsi: the VSI being configured
3045  **/
3046 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3047 {
3048         struct i40e_pf *pf = vsi->back;
3049         int i;
3050
3051         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3052                 for (i = vsi->base_vector;
3053                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3054                         i40e_irq_dynamic_enable(vsi, i);
3055         } else {
3056                 i40e_irq_dynamic_enable_icr0(pf);
3057         }
3058
3059         i40e_flush(&pf->hw);
3060         return 0;
3061 }
3062
3063 /**
3064  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3065  * @pf: board private structure
3066  **/
3067 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3068 {
3069         /* Disable ICR 0 */
3070         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3071         i40e_flush(&pf->hw);
3072 }
3073
3074 /**
3075  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3076  * @irq: interrupt number
3077  * @data: pointer to a q_vector
3078  *
3079  * This is the handler used for all MSI/Legacy interrupts, and deals
3080  * with both queue and non-queue interrupts.  This is also used in
3081  * MSIX mode to handle the non-queue interrupts.
3082  **/
3083 static irqreturn_t i40e_intr(int irq, void *data)
3084 {
3085         struct i40e_pf *pf = (struct i40e_pf *)data;
3086         struct i40e_hw *hw = &pf->hw;
3087         irqreturn_t ret = IRQ_NONE;
3088         u32 icr0, icr0_remaining;
3089         u32 val, ena_mask;
3090
3091         icr0 = rd32(hw, I40E_PFINT_ICR0);
3092         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3093
3094         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3095         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3096                 goto enable_intr;
3097
3098         /* if interrupt but no bits showing, must be SWINT */
3099         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3100             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3101                 pf->sw_int_count++;
3102
3103         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3104         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3105
3106                 /* temporarily disable queue cause for NAPI processing */
3107                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3108                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3109                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3110
3111                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3112                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3113                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3114
3115                 if (!test_bit(__I40E_DOWN, &pf->state))
3116                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3117         }
3118
3119         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3120                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3121                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3122         }
3123
3124         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3125                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3126                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3127         }
3128
3129         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3130                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3131                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3132         }
3133
3134         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3135                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3136                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3137                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3138                 val = rd32(hw, I40E_GLGEN_RSTAT);
3139                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3140                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3141                 if (val == I40E_RESET_CORER) {
3142                         pf->corer_count++;
3143                 } else if (val == I40E_RESET_GLOBR) {
3144                         pf->globr_count++;
3145                 } else if (val == I40E_RESET_EMPR) {
3146                         pf->empr_count++;
3147                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3148                 }
3149         }
3150
3151         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3152                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3153                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3154         }
3155
3156         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3157                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3158
3159                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3160                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3161                         i40e_ptp_tx_hwtstamp(pf);
3162                 }
3163         }
3164
3165         /* If a critical error is pending we have no choice but to reset the
3166          * device.
3167          * Report and mask out any remaining unexpected interrupts.
3168          */
3169         icr0_remaining = icr0 & ena_mask;
3170         if (icr0_remaining) {
3171                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3172                          icr0_remaining);
3173                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3174                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3175                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3176                         dev_info(&pf->pdev->dev, "device will be reset\n");
3177                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3178                         i40e_service_event_schedule(pf);
3179                 }
3180                 ena_mask &= ~icr0_remaining;
3181         }
3182         ret = IRQ_HANDLED;
3183
3184 enable_intr:
3185         /* re-enable interrupt causes */
3186         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3187         if (!test_bit(__I40E_DOWN, &pf->state)) {
3188                 i40e_service_event_schedule(pf);
3189                 i40e_irq_dynamic_enable_icr0(pf);
3190         }
3191
3192         return ret;
3193 }
3194
3195 /**
3196  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3197  * @tx_ring:  tx ring to clean
3198  * @budget:   how many cleans we're allowed
3199  *
3200  * Returns true if there's any budget left (e.g. the clean is finished)
3201  **/
3202 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3203 {
3204         struct i40e_vsi *vsi = tx_ring->vsi;
3205         u16 i = tx_ring->next_to_clean;
3206         struct i40e_tx_buffer *tx_buf;
3207         struct i40e_tx_desc *tx_desc;
3208
3209         tx_buf = &tx_ring->tx_bi[i];
3210         tx_desc = I40E_TX_DESC(tx_ring, i);
3211         i -= tx_ring->count;
3212
3213         do {
3214                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3215
3216                 /* if next_to_watch is not set then there is no work pending */
3217                 if (!eop_desc)
3218                         break;
3219
3220                 /* prevent any other reads prior to eop_desc */
3221                 read_barrier_depends();
3222
3223                 /* if the descriptor isn't done, no work yet to do */
3224                 if (!(eop_desc->cmd_type_offset_bsz &
3225                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3226                         break;
3227
3228                 /* clear next_to_watch to prevent false hangs */
3229                 tx_buf->next_to_watch = NULL;
3230
3231                 tx_desc->buffer_addr = 0;
3232                 tx_desc->cmd_type_offset_bsz = 0;
3233                 /* move past filter desc */
3234                 tx_buf++;
3235                 tx_desc++;
3236                 i++;
3237                 if (unlikely(!i)) {
3238                         i -= tx_ring->count;
3239                         tx_buf = tx_ring->tx_bi;
3240                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3241                 }
3242                 /* unmap skb header data */
3243                 dma_unmap_single(tx_ring->dev,
3244                                  dma_unmap_addr(tx_buf, dma),
3245                                  dma_unmap_len(tx_buf, len),
3246                                  DMA_TO_DEVICE);
3247                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3248                         kfree(tx_buf->raw_buf);
3249
3250                 tx_buf->raw_buf = NULL;
3251                 tx_buf->tx_flags = 0;
3252                 tx_buf->next_to_watch = NULL;
3253                 dma_unmap_len_set(tx_buf, len, 0);
3254                 tx_desc->buffer_addr = 0;
3255                 tx_desc->cmd_type_offset_bsz = 0;
3256
3257                 /* move us past the eop_desc for start of next FD desc */
3258                 tx_buf++;
3259                 tx_desc++;
3260                 i++;
3261                 if (unlikely(!i)) {
3262                         i -= tx_ring->count;
3263                         tx_buf = tx_ring->tx_bi;
3264                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3265                 }
3266
3267                 /* update budget accounting */
3268                 budget--;
3269         } while (likely(budget));
3270
3271         i += tx_ring->count;
3272         tx_ring->next_to_clean = i;
3273
3274         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3275                 i40e_irq_dynamic_enable(vsi,
3276                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3277         }
3278         return budget > 0;
3279 }
3280
3281 /**
3282  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3283  * @irq: interrupt number
3284  * @data: pointer to a q_vector
3285  **/
3286 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3287 {
3288         struct i40e_q_vector *q_vector = data;
3289         struct i40e_vsi *vsi;
3290
3291         if (!q_vector->tx.ring)
3292                 return IRQ_HANDLED;
3293
3294         vsi = q_vector->tx.ring->vsi;
3295         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3296
3297         return IRQ_HANDLED;
3298 }
3299
3300 /**
3301  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3302  * @vsi: the VSI being configured
3303  * @v_idx: vector index
3304  * @qp_idx: queue pair index
3305  **/
3306 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3307 {
3308         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3309         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3310         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3311
3312         tx_ring->q_vector = q_vector;
3313         tx_ring->next = q_vector->tx.ring;
3314         q_vector->tx.ring = tx_ring;
3315         q_vector->tx.count++;
3316
3317         rx_ring->q_vector = q_vector;
3318         rx_ring->next = q_vector->rx.ring;
3319         q_vector->rx.ring = rx_ring;
3320         q_vector->rx.count++;
3321 }
3322
3323 /**
3324  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3325  * @vsi: the VSI being configured
3326  *
3327  * This function maps descriptor rings to the queue-specific vectors
3328  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3329  * one vector per queue pair, but on a constrained vector budget, we
3330  * group the queue pairs as "efficiently" as possible.
3331  **/
3332 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3333 {
3334         int qp_remaining = vsi->num_queue_pairs;
3335         int q_vectors = vsi->num_q_vectors;
3336         int num_ringpairs;
3337         int v_start = 0;
3338         int qp_idx = 0;
3339
3340         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3341          * group them so there are multiple queues per vector.
3342          * It is also important to go through all the vectors available to be
3343          * sure that if we don't use all the vectors, that the remaining vectors
3344          * are cleared. This is especially important when decreasing the
3345          * number of queues in use.
3346          */
3347         for (; v_start < q_vectors; v_start++) {
3348                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3349
3350                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3351
3352                 q_vector->num_ringpairs = num_ringpairs;
3353
3354                 q_vector->rx.count = 0;
3355                 q_vector->tx.count = 0;
3356                 q_vector->rx.ring = NULL;
3357                 q_vector->tx.ring = NULL;
3358
3359                 while (num_ringpairs--) {
3360                         map_vector_to_qp(vsi, v_start, qp_idx);
3361                         qp_idx++;
3362                         qp_remaining--;
3363                 }
3364         }
3365 }
3366
3367 /**
3368  * i40e_vsi_request_irq - Request IRQ from the OS
3369  * @vsi: the VSI being configured
3370  * @basename: name for the vector
3371  **/
3372 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3373 {
3374         struct i40e_pf *pf = vsi->back;
3375         int err;
3376
3377         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3378                 err = i40e_vsi_request_irq_msix(vsi, basename);
3379         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3380                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3381                                   pf->misc_int_name, pf);
3382         else
3383                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3384                                   pf->misc_int_name, pf);
3385
3386         if (err)
3387                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3388
3389         return err;
3390 }
3391
3392 #ifdef CONFIG_NET_POLL_CONTROLLER
3393 /**
3394  * i40e_netpoll - A Polling 'interrupt'handler
3395  * @netdev: network interface device structure
3396  *
3397  * This is used by netconsole to send skbs without having to re-enable
3398  * interrupts.  It's not called while the normal interrupt routine is executing.
3399  **/
3400 #ifdef I40E_FCOE
3401 void i40e_netpoll(struct net_device *netdev)
3402 #else
3403 static void i40e_netpoll(struct net_device *netdev)
3404 #endif
3405 {
3406         struct i40e_netdev_priv *np = netdev_priv(netdev);
3407         struct i40e_vsi *vsi = np->vsi;
3408         struct i40e_pf *pf = vsi->back;
3409         int i;
3410
3411         /* if interface is down do nothing */
3412         if (test_bit(__I40E_DOWN, &vsi->state))
3413                 return;
3414
3415         pf->flags |= I40E_FLAG_IN_NETPOLL;
3416         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3417                 for (i = 0; i < vsi->num_q_vectors; i++)
3418                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3419         } else {
3420                 i40e_intr(pf->pdev->irq, netdev);
3421         }
3422         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3423 }
3424 #endif
3425
3426 /**
3427  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3428  * @pf: the PF being configured
3429  * @pf_q: the PF queue
3430  * @enable: enable or disable state of the queue
3431  *
3432  * This routine will wait for the given Tx queue of the PF to reach the
3433  * enabled or disabled state.
3434  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3435  * multiple retries; else will return 0 in case of success.
3436  **/
3437 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3438 {
3439         int i;
3440         u32 tx_reg;
3441
3442         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3443                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3444                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3445                         break;
3446
3447                 usleep_range(10, 20);
3448         }
3449         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3450                 return -ETIMEDOUT;
3451
3452         return 0;
3453 }
3454
3455 /**
3456  * i40e_vsi_control_tx - Start or stop a VSI's rings
3457  * @vsi: the VSI being configured
3458  * @enable: start or stop the rings
3459  **/
3460 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3461 {
3462         struct i40e_pf *pf = vsi->back;
3463         struct i40e_hw *hw = &pf->hw;
3464         int i, j, pf_q, ret = 0;
3465         u32 tx_reg;
3466
3467         pf_q = vsi->base_queue;
3468         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3469
3470                 /* warn the TX unit of coming changes */
3471                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3472                 if (!enable)
3473                         usleep_range(10, 20);
3474
3475                 for (j = 0; j < 50; j++) {
3476                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3477                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3478                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3479                                 break;
3480                         usleep_range(1000, 2000);
3481                 }
3482                 /* Skip if the queue is already in the requested state */
3483                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3484                         continue;
3485
3486                 /* turn on/off the queue */
3487                 if (enable) {
3488                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3489                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3490                 } else {
3491                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3492                 }
3493
3494                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3495
3496                 /* wait for the change to finish */
3497                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3498                 if (ret) {
3499                         dev_info(&pf->pdev->dev,
3500                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3501                                  __func__, vsi->seid, pf_q,
3502                                  (enable ? "en" : "dis"));
3503                         break;
3504                 }
3505         }
3506
3507         if (hw->revision_id == 0)
3508                 mdelay(50);
3509         return ret;
3510 }
3511
3512 /**
3513  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3514  * @pf: the PF being configured
3515  * @pf_q: the PF queue
3516  * @enable: enable or disable state of the queue
3517  *
3518  * This routine will wait for the given Rx queue of the PF to reach the
3519  * enabled or disabled state.
3520  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3521  * multiple retries; else will return 0 in case of success.
3522  **/
3523 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3524 {
3525         int i;
3526         u32 rx_reg;
3527
3528         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3529                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3530                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3531                         break;
3532
3533                 usleep_range(10, 20);
3534         }
3535         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3536                 return -ETIMEDOUT;
3537
3538         return 0;
3539 }
3540
3541 /**
3542  * i40e_vsi_control_rx - Start or stop a VSI's rings
3543  * @vsi: the VSI being configured
3544  * @enable: start or stop the rings
3545  **/
3546 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3547 {
3548         struct i40e_pf *pf = vsi->back;
3549         struct i40e_hw *hw = &pf->hw;
3550         int i, j, pf_q, ret = 0;
3551         u32 rx_reg;
3552
3553         pf_q = vsi->base_queue;
3554         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3555                 for (j = 0; j < 50; j++) {
3556                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3557                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3558                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3559                                 break;
3560                         usleep_range(1000, 2000);
3561                 }
3562
3563                 /* Skip if the queue is already in the requested state */
3564                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3565                         continue;
3566
3567                 /* turn on/off the queue */
3568                 if (enable)
3569                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3570                 else
3571                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3572                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3573
3574                 /* wait for the change to finish */
3575                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3576                 if (ret) {
3577                         dev_info(&pf->pdev->dev,
3578                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3579                                  __func__, vsi->seid, pf_q,
3580                                  (enable ? "en" : "dis"));
3581                         break;
3582                 }
3583         }
3584
3585         return ret;
3586 }
3587
3588 /**
3589  * i40e_vsi_control_rings - Start or stop a VSI's rings
3590  * @vsi: the VSI being configured
3591  * @enable: start or stop the rings
3592  **/
3593 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3594 {
3595         int ret = 0;
3596
3597         /* do rx first for enable and last for disable */
3598         if (request) {
3599                 ret = i40e_vsi_control_rx(vsi, request);
3600                 if (ret)
3601                         return ret;
3602                 ret = i40e_vsi_control_tx(vsi, request);
3603         } else {
3604                 /* Ignore return value, we need to shutdown whatever we can */
3605                 i40e_vsi_control_tx(vsi, request);
3606                 i40e_vsi_control_rx(vsi, request);
3607         }
3608
3609         return ret;
3610 }
3611
3612 /**
3613  * i40e_vsi_free_irq - Free the irq association with the OS
3614  * @vsi: the VSI being configured
3615  **/
3616 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3617 {
3618         struct i40e_pf *pf = vsi->back;
3619         struct i40e_hw *hw = &pf->hw;
3620         int base = vsi->base_vector;
3621         u32 val, qp;
3622         int i;
3623
3624         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3625                 if (!vsi->q_vectors)
3626                         return;
3627
3628                 if (!vsi->irqs_ready)
3629                         return;
3630
3631                 vsi->irqs_ready = false;
3632                 for (i = 0; i < vsi->num_q_vectors; i++) {
3633                         u16 vector = i + base;
3634
3635                         /* free only the irqs that were actually requested */
3636                         if (!vsi->q_vectors[i] ||
3637                             !vsi->q_vectors[i]->num_ringpairs)
3638                                 continue;
3639
3640                         /* clear the affinity_mask in the IRQ descriptor */
3641                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3642                                               NULL);
3643                         free_irq(pf->msix_entries[vector].vector,
3644                                  vsi->q_vectors[i]);
3645
3646                         /* Tear down the interrupt queue link list
3647                          *
3648                          * We know that they come in pairs and always
3649                          * the Rx first, then the Tx.  To clear the
3650                          * link list, stick the EOL value into the
3651                          * next_q field of the registers.
3652                          */
3653                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3654                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3655                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3656                         val |= I40E_QUEUE_END_OF_LIST
3657                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3658                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3659
3660                         while (qp != I40E_QUEUE_END_OF_LIST) {
3661                                 u32 next;
3662
3663                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3664
3665                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3666                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3667                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3668                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3669
3670                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3671                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3672
3673                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3674
3675                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3676
3677                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3678                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3679
3680                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3681                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3682                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3683                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3684
3685                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3686                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3687
3688                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3689                                 qp = next;
3690                         }
3691                 }
3692         } else {
3693                 free_irq(pf->pdev->irq, pf);
3694
3695                 val = rd32(hw, I40E_PFINT_LNKLST0);
3696                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3697                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3698                 val |= I40E_QUEUE_END_OF_LIST
3699                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3700                 wr32(hw, I40E_PFINT_LNKLST0, val);
3701
3702                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3703                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3704                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3705                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3706                          I40E_QINT_RQCTL_INTEVENT_MASK);
3707
3708                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3709                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3710
3711                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3712
3713                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3714
3715                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3716                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3717                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3718                          I40E_QINT_TQCTL_INTEVENT_MASK);
3719
3720                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3721                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3722
3723                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3724         }
3725 }
3726
3727 /**
3728  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3729  * @vsi: the VSI being configured
3730  * @v_idx: Index of vector to be freed
3731  *
3732  * This function frees the memory allocated to the q_vector.  In addition if
3733  * NAPI is enabled it will delete any references to the NAPI struct prior
3734  * to freeing the q_vector.
3735  **/
3736 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3737 {
3738         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3739         struct i40e_ring *ring;
3740
3741         if (!q_vector)
3742                 return;
3743
3744         /* disassociate q_vector from rings */
3745         i40e_for_each_ring(ring, q_vector->tx)
3746                 ring->q_vector = NULL;
3747
3748         i40e_for_each_ring(ring, q_vector->rx)
3749                 ring->q_vector = NULL;
3750
3751         /* only VSI w/ an associated netdev is set up w/ NAPI */
3752         if (vsi->netdev)
3753                 netif_napi_del(&q_vector->napi);
3754
3755         vsi->q_vectors[v_idx] = NULL;
3756
3757         kfree_rcu(q_vector, rcu);
3758 }
3759
3760 /**
3761  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3762  * @vsi: the VSI being un-configured
3763  *
3764  * This frees the memory allocated to the q_vectors and
3765  * deletes references to the NAPI struct.
3766  **/
3767 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3768 {
3769         int v_idx;
3770
3771         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3772                 i40e_free_q_vector(vsi, v_idx);
3773 }
3774
3775 /**
3776  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3777  * @pf: board private structure
3778  **/
3779 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3780 {
3781         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3782         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3783                 pci_disable_msix(pf->pdev);
3784                 kfree(pf->msix_entries);
3785                 pf->msix_entries = NULL;
3786         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3787                 pci_disable_msi(pf->pdev);
3788         }
3789         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3790 }
3791
3792 /**
3793  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3794  * @pf: board private structure
3795  *
3796  * We go through and clear interrupt specific resources and reset the structure
3797  * to pre-load conditions
3798  **/
3799 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3800 {
3801         int i;
3802
3803         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3804         for (i = 0; i < pf->num_alloc_vsi; i++)
3805                 if (pf->vsi[i])
3806                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3807         i40e_reset_interrupt_capability(pf);
3808 }
3809
3810 /**
3811  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3812  * @vsi: the VSI being configured
3813  **/
3814 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3815 {
3816         int q_idx;
3817
3818         if (!vsi->netdev)
3819                 return;
3820
3821         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3822                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3823 }
3824
3825 /**
3826  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3827  * @vsi: the VSI being configured
3828  **/
3829 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3830 {
3831         int q_idx;
3832
3833         if (!vsi->netdev)
3834                 return;
3835
3836         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3837                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3838 }
3839
3840 /**
3841  * i40e_vsi_close - Shut down a VSI
3842  * @vsi: the vsi to be quelled
3843  **/
3844 static void i40e_vsi_close(struct i40e_vsi *vsi)
3845 {
3846         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3847                 i40e_down(vsi);
3848         i40e_vsi_free_irq(vsi);
3849         i40e_vsi_free_tx_resources(vsi);
3850         i40e_vsi_free_rx_resources(vsi);
3851 }
3852
3853 /**
3854  * i40e_quiesce_vsi - Pause a given VSI
3855  * @vsi: the VSI being paused
3856  **/
3857 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3858 {
3859         if (test_bit(__I40E_DOWN, &vsi->state))
3860                 return;
3861
3862         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3863         if (vsi->netdev && netif_running(vsi->netdev)) {
3864                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3865         } else {
3866                 i40e_vsi_close(vsi);
3867         }
3868 }
3869
3870 /**
3871  * i40e_unquiesce_vsi - Resume a given VSI
3872  * @vsi: the VSI being resumed
3873  **/
3874 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3875 {
3876         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3877                 return;
3878
3879         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3880         if (vsi->netdev && netif_running(vsi->netdev))
3881                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3882         else
3883                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3884 }
3885
3886 /**
3887  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3888  * @pf: the PF
3889  **/
3890 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3891 {
3892         int v;
3893
3894         for (v = 0; v < pf->num_alloc_vsi; v++) {
3895                 if (pf->vsi[v])
3896                         i40e_quiesce_vsi(pf->vsi[v]);
3897         }
3898 }
3899
3900 /**
3901  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3902  * @pf: the PF
3903  **/
3904 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3905 {
3906         int v;
3907
3908         for (v = 0; v < pf->num_alloc_vsi; v++) {
3909                 if (pf->vsi[v])
3910                         i40e_unquiesce_vsi(pf->vsi[v]);
3911         }
3912 }
3913
3914 /**
3915  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3916  * @dcbcfg: the corresponding DCBx configuration structure
3917  *
3918  * Return the number of TCs from given DCBx configuration
3919  **/
3920 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3921 {
3922         u8 num_tc = 0;
3923         int i;
3924
3925         /* Scan the ETS Config Priority Table to find
3926          * traffic class enabled for a given priority
3927          * and use the traffic class index to get the
3928          * number of traffic classes enabled
3929          */
3930         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3931                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3932                         num_tc = dcbcfg->etscfg.prioritytable[i];
3933         }
3934
3935         /* Traffic class index starts from zero so
3936          * increment to return the actual count
3937          */
3938         return num_tc + 1;
3939 }
3940
3941 /**
3942  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3943  * @dcbcfg: the corresponding DCBx configuration structure
3944  *
3945  * Query the current DCB configuration and return the number of
3946  * traffic classes enabled from the given DCBX config
3947  **/
3948 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3949 {
3950         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3951         u8 enabled_tc = 1;
3952         u8 i;
3953
3954         for (i = 0; i < num_tc; i++)
3955                 enabled_tc |= 1 << i;
3956
3957         return enabled_tc;
3958 }
3959
3960 /**
3961  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3962  * @pf: PF being queried
3963  *
3964  * Return number of traffic classes enabled for the given PF
3965  **/
3966 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3967 {
3968         struct i40e_hw *hw = &pf->hw;
3969         u8 i, enabled_tc;
3970         u8 num_tc = 0;
3971         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3972
3973         /* If DCB is not enabled then always in single TC */
3974         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3975                 return 1;
3976
3977         /* MFP mode return count of enabled TCs for this PF */
3978         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3979                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3980                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3981                         if (enabled_tc & (1 << i))
3982                                 num_tc++;
3983                 }
3984                 return num_tc;
3985         }
3986
3987         /* SFP mode will be enabled for all TCs on port */
3988         return i40e_dcb_get_num_tc(dcbcfg);
3989 }
3990
3991 /**
3992  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3993  * @pf: PF being queried
3994  *
3995  * Return a bitmap for first enabled traffic class for this PF.
3996  **/
3997 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3998 {
3999         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4000         u8 i = 0;
4001
4002         if (!enabled_tc)
4003                 return 0x1; /* TC0 */
4004
4005         /* Find the first enabled TC */
4006         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4007                 if (enabled_tc & (1 << i))
4008                         break;
4009         }
4010
4011         return 1 << i;
4012 }
4013
4014 /**
4015  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4016  * @pf: PF being queried
4017  *
4018  * Return a bitmap for enabled traffic classes for this PF.
4019  **/
4020 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4021 {
4022         /* If DCB is not enabled for this PF then just return default TC */
4023         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4024                 return i40e_pf_get_default_tc(pf);
4025
4026         /* MFP mode will have enabled TCs set by FW */
4027         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4028                 return pf->hw.func_caps.enabled_tcmap;
4029
4030         /* SFP mode we want PF to be enabled for all TCs */
4031         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4032 }
4033
4034 /**
4035  * i40e_vsi_get_bw_info - Query VSI BW Information
4036  * @vsi: the VSI being queried
4037  *
4038  * Returns 0 on success, negative value on failure
4039  **/
4040 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4041 {
4042         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4043         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4044         struct i40e_pf *pf = vsi->back;
4045         struct i40e_hw *hw = &pf->hw;
4046         i40e_status aq_ret;
4047         u32 tc_bw_max;
4048         int i;
4049
4050         /* Get the VSI level BW configuration */
4051         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4052         if (aq_ret) {
4053                 dev_info(&pf->pdev->dev,
4054                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4055                          aq_ret, pf->hw.aq.asq_last_status);
4056                 return -EINVAL;
4057         }
4058
4059         /* Get the VSI level BW configuration per TC */
4060         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4061                                                   NULL);
4062         if (aq_ret) {
4063                 dev_info(&pf->pdev->dev,
4064                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4065                          aq_ret, pf->hw.aq.asq_last_status);
4066                 return -EINVAL;
4067         }
4068
4069         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4070                 dev_info(&pf->pdev->dev,
4071                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4072                          bw_config.tc_valid_bits,
4073                          bw_ets_config.tc_valid_bits);
4074                 /* Still continuing */
4075         }
4076
4077         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4078         vsi->bw_max_quanta = bw_config.max_bw;
4079         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4080                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4081         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4082                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4083                 vsi->bw_ets_limit_credits[i] =
4084                                         le16_to_cpu(bw_ets_config.credits[i]);
4085                 /* 3 bits out of 4 for each TC */
4086                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4087         }
4088
4089         return 0;
4090 }
4091
4092 /**
4093  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4094  * @vsi: the VSI being configured
4095  * @enabled_tc: TC bitmap
4096  * @bw_credits: BW shared credits per TC
4097  *
4098  * Returns 0 on success, negative value on failure
4099  **/
4100 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4101                                        u8 *bw_share)
4102 {
4103         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4104         i40e_status aq_ret;
4105         int i;
4106
4107         bw_data.tc_valid_bits = enabled_tc;
4108         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4109                 bw_data.tc_bw_credits[i] = bw_share[i];
4110
4111         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4112                                           NULL);
4113         if (aq_ret) {
4114                 dev_info(&vsi->back->pdev->dev,
4115                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4116                          vsi->back->hw.aq.asq_last_status);
4117                 return -EINVAL;
4118         }
4119
4120         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4121                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4122
4123         return 0;
4124 }
4125
4126 /**
4127  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4128  * @vsi: the VSI being configured
4129  * @enabled_tc: TC map to be enabled
4130  *
4131  **/
4132 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4133 {
4134         struct net_device *netdev = vsi->netdev;
4135         struct i40e_pf *pf = vsi->back;
4136         struct i40e_hw *hw = &pf->hw;
4137         u8 netdev_tc = 0;
4138         int i;
4139         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4140
4141         if (!netdev)
4142                 return;
4143
4144         if (!enabled_tc) {
4145                 netdev_reset_tc(netdev);
4146                 return;
4147         }
4148
4149         /* Set up actual enabled TCs on the VSI */
4150         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4151                 return;
4152
4153         /* set per TC queues for the VSI */
4154         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4155                 /* Only set TC queues for enabled tcs
4156                  *
4157                  * e.g. For a VSI that has TC0 and TC3 enabled the
4158                  * enabled_tc bitmap would be 0x00001001; the driver
4159                  * will set the numtc for netdev as 2 that will be
4160                  * referenced by the netdev layer as TC 0 and 1.
4161                  */
4162                 if (vsi->tc_config.enabled_tc & (1 << i))
4163                         netdev_set_tc_queue(netdev,
4164                                         vsi->tc_config.tc_info[i].netdev_tc,
4165                                         vsi->tc_config.tc_info[i].qcount,
4166                                         vsi->tc_config.tc_info[i].qoffset);
4167         }
4168
4169         /* Assign UP2TC map for the VSI */
4170         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4171                 /* Get the actual TC# for the UP */
4172                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4173                 /* Get the mapped netdev TC# for the UP */
4174                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4175                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4176         }
4177 }
4178
4179 /**
4180  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4181  * @vsi: the VSI being configured
4182  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4183  **/
4184 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4185                                       struct i40e_vsi_context *ctxt)
4186 {
4187         /* copy just the sections touched not the entire info
4188          * since not all sections are valid as returned by
4189          * update vsi params
4190          */
4191         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4192         memcpy(&vsi->info.queue_mapping,
4193                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4194         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4195                sizeof(vsi->info.tc_mapping));
4196 }
4197
4198 /**
4199  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4200  * @vsi: VSI to be configured
4201  * @enabled_tc: TC bitmap
4202  *
4203  * This configures a particular VSI for TCs that are mapped to the
4204  * given TC bitmap. It uses default bandwidth share for TCs across
4205  * VSIs to configure TC for a particular VSI.
4206  *
4207  * NOTE:
4208  * It is expected that the VSI queues have been quisced before calling
4209  * this function.
4210  **/
4211 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4212 {
4213         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4214         struct i40e_vsi_context ctxt;
4215         int ret = 0;
4216         int i;
4217
4218         /* Check if enabled_tc is same as existing or new TCs */
4219         if (vsi->tc_config.enabled_tc == enabled_tc)
4220                 return ret;
4221
4222         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4223         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4224                 if (enabled_tc & (1 << i))
4225                         bw_share[i] = 1;
4226         }
4227
4228         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4229         if (ret) {
4230                 dev_info(&vsi->back->pdev->dev,
4231                          "Failed configuring TC map %d for VSI %d\n",
4232                          enabled_tc, vsi->seid);
4233                 goto out;
4234         }
4235
4236         /* Update Queue Pairs Mapping for currently enabled UPs */
4237         ctxt.seid = vsi->seid;
4238         ctxt.pf_num = vsi->back->hw.pf_id;
4239         ctxt.vf_num = 0;
4240         ctxt.uplink_seid = vsi->uplink_seid;
4241         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4242         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4243
4244         /* Update the VSI after updating the VSI queue-mapping information */
4245         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4246         if (ret) {
4247                 dev_info(&vsi->back->pdev->dev,
4248                          "update vsi failed, aq_err=%d\n",
4249                          vsi->back->hw.aq.asq_last_status);
4250                 goto out;
4251         }
4252         /* update the local VSI info with updated queue map */
4253         i40e_vsi_update_queue_map(vsi, &ctxt);
4254         vsi->info.valid_sections = 0;
4255
4256         /* Update current VSI BW information */
4257         ret = i40e_vsi_get_bw_info(vsi);
4258         if (ret) {
4259                 dev_info(&vsi->back->pdev->dev,
4260                          "Failed updating vsi bw info, aq_err=%d\n",
4261                          vsi->back->hw.aq.asq_last_status);
4262                 goto out;
4263         }
4264
4265         /* Update the netdev TC setup */
4266         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4267 out:
4268         return ret;
4269 }
4270
4271 /**
4272  * i40e_veb_config_tc - Configure TCs for given VEB
4273  * @veb: given VEB
4274  * @enabled_tc: TC bitmap
4275  *
4276  * Configures given TC bitmap for VEB (switching) element
4277  **/
4278 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4279 {
4280         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4281         struct i40e_pf *pf = veb->pf;
4282         int ret = 0;
4283         int i;
4284
4285         /* No TCs or already enabled TCs just return */
4286         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4287                 return ret;
4288
4289         bw_data.tc_valid_bits = enabled_tc;
4290         /* bw_data.absolute_credits is not set (relative) */
4291
4292         /* Enable ETS TCs with equal BW Share for now */
4293         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4294                 if (enabled_tc & (1 << i))
4295                         bw_data.tc_bw_share_credits[i] = 1;
4296         }
4297
4298         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4299                                                    &bw_data, NULL);
4300         if (ret) {
4301                 dev_info(&pf->pdev->dev,
4302                          "veb bw config failed, aq_err=%d\n",
4303                          pf->hw.aq.asq_last_status);
4304                 goto out;
4305         }
4306
4307         /* Update the BW information */
4308         ret = i40e_veb_get_bw_info(veb);
4309         if (ret) {
4310                 dev_info(&pf->pdev->dev,
4311                          "Failed getting veb bw config, aq_err=%d\n",
4312                          pf->hw.aq.asq_last_status);
4313         }
4314
4315 out:
4316         return ret;
4317 }
4318
4319 #ifdef CONFIG_I40E_DCB
4320 /**
4321  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4322  * @pf: PF struct
4323  *
4324  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4325  * the caller would've quiesce all the VSIs before calling
4326  * this function
4327  **/
4328 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4329 {
4330         u8 tc_map = 0;
4331         int ret;
4332         u8 v;
4333
4334         /* Enable the TCs available on PF to all VEBs */
4335         tc_map = i40e_pf_get_tc_map(pf);
4336         for (v = 0; v < I40E_MAX_VEB; v++) {
4337                 if (!pf->veb[v])
4338                         continue;
4339                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4340                 if (ret) {
4341                         dev_info(&pf->pdev->dev,
4342                                  "Failed configuring TC for VEB seid=%d\n",
4343                                  pf->veb[v]->seid);
4344                         /* Will try to configure as many components */
4345                 }
4346         }
4347
4348         /* Update each VSI */
4349         for (v = 0; v < pf->num_alloc_vsi; v++) {
4350                 if (!pf->vsi[v])
4351                         continue;
4352
4353                 /* - Enable all TCs for the LAN VSI
4354 #ifdef I40E_FCOE
4355                  * - For FCoE VSI only enable the TC configured
4356                  *   as per the APP TLV
4357 #endif
4358                  * - For all others keep them at TC0 for now
4359                  */
4360                 if (v == pf->lan_vsi)
4361                         tc_map = i40e_pf_get_tc_map(pf);
4362                 else
4363                         tc_map = i40e_pf_get_default_tc(pf);
4364 #ifdef I40E_FCOE
4365                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4366                         tc_map = i40e_get_fcoe_tc_map(pf);
4367 #endif /* #ifdef I40E_FCOE */
4368
4369                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4370                 if (ret) {
4371                         dev_info(&pf->pdev->dev,
4372                                  "Failed configuring TC for VSI seid=%d\n",
4373                                  pf->vsi[v]->seid);
4374                         /* Will try to configure as many components */
4375                 } else {
4376                         /* Re-configure VSI vectors based on updated TC map */
4377                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4378                         if (pf->vsi[v]->netdev)
4379                                 i40e_dcbnl_set_all(pf->vsi[v]);
4380                 }
4381         }
4382 }
4383
4384 /**
4385  * i40e_init_pf_dcb - Initialize DCB configuration
4386  * @pf: PF being configured
4387  *
4388  * Query the current DCB configuration and cache it
4389  * in the hardware structure
4390  **/
4391 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4392 {
4393         struct i40e_hw *hw = &pf->hw;
4394         int err = 0;
4395
4396         if (pf->hw.func_caps.npar_enable)
4397                 goto out;
4398
4399         /* Get the initial DCB configuration */
4400         err = i40e_init_dcb(hw);
4401         if (!err) {
4402                 /* Device/Function is not DCBX capable */
4403                 if ((!hw->func_caps.dcb) ||
4404                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4405                         dev_info(&pf->pdev->dev,
4406                                  "DCBX offload is not supported or is disabled for this PF.\n");
4407
4408                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4409                                 goto out;
4410
4411                 } else {
4412                         /* When status is not DISABLED then DCBX in FW */
4413                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4414                                        DCB_CAP_DCBX_VER_IEEE;
4415
4416                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4417                         /* Enable DCB tagging only when more than one TC */
4418                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4419                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4420                 }
4421         } else {
4422                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4423                          pf->hw.aq.asq_last_status);
4424         }
4425
4426 out:
4427         return err;
4428 }
4429 #endif /* CONFIG_I40E_DCB */
4430 #define SPEED_SIZE 14
4431 #define FC_SIZE 8
4432 /**
4433  * i40e_print_link_message - print link up or down
4434  * @vsi: the VSI for which link needs a message
4435  */
4436 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4437 {
4438         char speed[SPEED_SIZE] = "Unknown";
4439         char fc[FC_SIZE] = "RX/TX";
4440
4441         if (!isup) {
4442                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4443                 return;
4444         }
4445
4446         switch (vsi->back->hw.phy.link_info.link_speed) {
4447         case I40E_LINK_SPEED_40GB:
4448                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4449                 break;
4450         case I40E_LINK_SPEED_10GB:
4451                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4452                 break;
4453         case I40E_LINK_SPEED_1GB:
4454                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4455                 break;
4456         case I40E_LINK_SPEED_100MB:
4457                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4458                 break;
4459         default:
4460                 break;
4461         }
4462
4463         switch (vsi->back->hw.fc.current_mode) {
4464         case I40E_FC_FULL:
4465                 strlcpy(fc, "RX/TX", FC_SIZE);
4466                 break;
4467         case I40E_FC_TX_PAUSE:
4468                 strlcpy(fc, "TX", FC_SIZE);
4469                 break;
4470         case I40E_FC_RX_PAUSE:
4471                 strlcpy(fc, "RX", FC_SIZE);
4472                 break;
4473         default:
4474                 strlcpy(fc, "None", FC_SIZE);
4475                 break;
4476         }
4477
4478         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4479                     speed, fc);
4480 }
4481
4482 /**
4483  * i40e_up_complete - Finish the last steps of bringing up a connection
4484  * @vsi: the VSI being configured
4485  **/
4486 static int i40e_up_complete(struct i40e_vsi *vsi)
4487 {
4488         struct i40e_pf *pf = vsi->back;
4489         int err;
4490
4491         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4492                 i40e_vsi_configure_msix(vsi);
4493         else
4494                 i40e_configure_msi_and_legacy(vsi);
4495
4496         /* start rings */
4497         err = i40e_vsi_control_rings(vsi, true);
4498         if (err)
4499                 return err;
4500
4501         clear_bit(__I40E_DOWN, &vsi->state);
4502         i40e_napi_enable_all(vsi);
4503         i40e_vsi_enable_irq(vsi);
4504
4505         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4506             (vsi->netdev)) {
4507                 i40e_print_link_message(vsi, true);
4508                 netif_tx_start_all_queues(vsi->netdev);
4509                 netif_carrier_on(vsi->netdev);
4510         } else if (vsi->netdev) {
4511                 i40e_print_link_message(vsi, false);
4512                 /* need to check for qualified module here*/
4513                 if ((pf->hw.phy.link_info.link_info &
4514                         I40E_AQ_MEDIA_AVAILABLE) &&
4515                     (!(pf->hw.phy.link_info.an_info &
4516                         I40E_AQ_QUALIFIED_MODULE)))
4517                         netdev_err(vsi->netdev,
4518                                    "the driver failed to link because an unqualified module was detected.");
4519         }
4520
4521         /* replay FDIR SB filters */
4522         if (vsi->type == I40E_VSI_FDIR) {
4523                 /* reset fd counters */
4524                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4525                 if (pf->fd_tcp_rule > 0) {
4526                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4527                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4528                         pf->fd_tcp_rule = 0;
4529                 }
4530                 i40e_fdir_filter_restore(vsi);
4531         }
4532         i40e_service_event_schedule(pf);
4533
4534         return 0;
4535 }
4536
4537 /**
4538  * i40e_vsi_reinit_locked - Reset the VSI
4539  * @vsi: the VSI being configured
4540  *
4541  * Rebuild the ring structs after some configuration
4542  * has changed, e.g. MTU size.
4543  **/
4544 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4545 {
4546         struct i40e_pf *pf = vsi->back;
4547
4548         WARN_ON(in_interrupt());
4549         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4550                 usleep_range(1000, 2000);
4551         i40e_down(vsi);
4552
4553         /* Give a VF some time to respond to the reset.  The
4554          * two second wait is based upon the watchdog cycle in
4555          * the VF driver.
4556          */
4557         if (vsi->type == I40E_VSI_SRIOV)
4558                 msleep(2000);
4559         i40e_up(vsi);
4560         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4561 }
4562
4563 /**
4564  * i40e_up - Bring the connection back up after being down
4565  * @vsi: the VSI being configured
4566  **/
4567 int i40e_up(struct i40e_vsi *vsi)
4568 {
4569         int err;
4570
4571         err = i40e_vsi_configure(vsi);
4572         if (!err)
4573                 err = i40e_up_complete(vsi);
4574
4575         return err;
4576 }
4577
4578 /**
4579  * i40e_down - Shutdown the connection processing
4580  * @vsi: the VSI being stopped
4581  **/
4582 void i40e_down(struct i40e_vsi *vsi)
4583 {
4584         int i;
4585
4586         /* It is assumed that the caller of this function
4587          * sets the vsi->state __I40E_DOWN bit.
4588          */
4589         if (vsi->netdev) {
4590                 netif_carrier_off(vsi->netdev);
4591                 netif_tx_disable(vsi->netdev);
4592         }
4593         i40e_vsi_disable_irq(vsi);
4594         i40e_vsi_control_rings(vsi, false);
4595         i40e_napi_disable_all(vsi);
4596
4597         for (i = 0; i < vsi->num_queue_pairs; i++) {
4598                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4599                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4600         }
4601 }
4602
4603 /**
4604  * i40e_setup_tc - configure multiple traffic classes
4605  * @netdev: net device to configure
4606  * @tc: number of traffic classes to enable
4607  **/
4608 #ifdef I40E_FCOE
4609 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4610 #else
4611 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4612 #endif
4613 {
4614         struct i40e_netdev_priv *np = netdev_priv(netdev);
4615         struct i40e_vsi *vsi = np->vsi;
4616         struct i40e_pf *pf = vsi->back;
4617         u8 enabled_tc = 0;
4618         int ret = -EINVAL;
4619         int i;
4620
4621         /* Check if DCB enabled to continue */
4622         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4623                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4624                 goto exit;
4625         }
4626
4627         /* Check if MFP enabled */
4628         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4629                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4630                 goto exit;
4631         }
4632
4633         /* Check whether tc count is within enabled limit */
4634         if (tc > i40e_pf_get_num_tc(pf)) {
4635                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4636                 goto exit;
4637         }
4638
4639         /* Generate TC map for number of tc requested */
4640         for (i = 0; i < tc; i++)
4641                 enabled_tc |= (1 << i);
4642
4643         /* Requesting same TC configuration as already enabled */
4644         if (enabled_tc == vsi->tc_config.enabled_tc)
4645                 return 0;
4646
4647         /* Quiesce VSI queues */
4648         i40e_quiesce_vsi(vsi);
4649
4650         /* Configure VSI for enabled TCs */
4651         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4652         if (ret) {
4653                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4654                             vsi->seid);
4655                 goto exit;
4656         }
4657
4658         /* Unquiesce VSI */
4659         i40e_unquiesce_vsi(vsi);
4660
4661 exit:
4662         return ret;
4663 }
4664
4665 /**
4666  * i40e_open - Called when a network interface is made active
4667  * @netdev: network interface device structure
4668  *
4669  * The open entry point is called when a network interface is made
4670  * active by the system (IFF_UP).  At this point all resources needed
4671  * for transmit and receive operations are allocated, the interrupt
4672  * handler is registered with the OS, the netdev watchdog subtask is
4673  * enabled, and the stack is notified that the interface is ready.
4674  *
4675  * Returns 0 on success, negative value on failure
4676  **/
4677 #ifdef I40E_FCOE
4678 int i40e_open(struct net_device *netdev)
4679 #else
4680 static int i40e_open(struct net_device *netdev)
4681 #endif
4682 {
4683         struct i40e_netdev_priv *np = netdev_priv(netdev);
4684         struct i40e_vsi *vsi = np->vsi;
4685         struct i40e_pf *pf = vsi->back;
4686         int err;
4687
4688         /* disallow open during test or if eeprom is broken */
4689         if (test_bit(__I40E_TESTING, &pf->state) ||
4690             test_bit(__I40E_BAD_EEPROM, &pf->state))
4691                 return -EBUSY;
4692
4693         netif_carrier_off(netdev);
4694
4695         err = i40e_vsi_open(vsi);
4696         if (err)
4697                 return err;
4698
4699         /* configure global TSO hardware offload settings */
4700         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4701                                                        TCP_FLAG_FIN) >> 16);
4702         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4703                                                        TCP_FLAG_FIN |
4704                                                        TCP_FLAG_CWR) >> 16);
4705         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4706
4707 #ifdef CONFIG_I40E_VXLAN
4708         vxlan_get_rx_port(netdev);
4709 #endif
4710
4711         return 0;
4712 }
4713
4714 /**
4715  * i40e_vsi_open -
4716  * @vsi: the VSI to open
4717  *
4718  * Finish initialization of the VSI.
4719  *
4720  * Returns 0 on success, negative value on failure
4721  **/
4722 int i40e_vsi_open(struct i40e_vsi *vsi)
4723 {
4724         struct i40e_pf *pf = vsi->back;
4725         char int_name[IFNAMSIZ];
4726         int err;
4727
4728         /* allocate descriptors */
4729         err = i40e_vsi_setup_tx_resources(vsi);
4730         if (err)
4731                 goto err_setup_tx;
4732         err = i40e_vsi_setup_rx_resources(vsi);
4733         if (err)
4734                 goto err_setup_rx;
4735
4736         err = i40e_vsi_configure(vsi);
4737         if (err)
4738                 goto err_setup_rx;
4739
4740         if (vsi->netdev) {
4741                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4742                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4743                 err = i40e_vsi_request_irq(vsi, int_name);
4744                 if (err)
4745                         goto err_setup_rx;
4746
4747                 /* Notify the stack of the actual queue counts. */
4748                 err = netif_set_real_num_tx_queues(vsi->netdev,
4749                                                    vsi->num_queue_pairs);
4750                 if (err)
4751                         goto err_set_queues;
4752
4753                 err = netif_set_real_num_rx_queues(vsi->netdev,
4754                                                    vsi->num_queue_pairs);
4755                 if (err)
4756                         goto err_set_queues;
4757
4758         } else if (vsi->type == I40E_VSI_FDIR) {
4759                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4760                          dev_driver_string(&pf->pdev->dev));
4761                 err = i40e_vsi_request_irq(vsi, int_name);
4762         } else {
4763                 err = -EINVAL;
4764                 goto err_setup_rx;
4765         }
4766
4767         err = i40e_up_complete(vsi);
4768         if (err)
4769                 goto err_up_complete;
4770
4771         return 0;
4772
4773 err_up_complete:
4774         i40e_down(vsi);
4775 err_set_queues:
4776         i40e_vsi_free_irq(vsi);
4777 err_setup_rx:
4778         i40e_vsi_free_rx_resources(vsi);
4779 err_setup_tx:
4780         i40e_vsi_free_tx_resources(vsi);
4781         if (vsi == pf->vsi[pf->lan_vsi])
4782                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4783
4784         return err;
4785 }
4786
4787 /**
4788  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4789  * @pf: Pointer to pf
4790  *
4791  * This function destroys the hlist where all the Flow Director
4792  * filters were saved.
4793  **/
4794 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4795 {
4796         struct i40e_fdir_filter *filter;
4797         struct hlist_node *node2;
4798
4799         hlist_for_each_entry_safe(filter, node2,
4800                                   &pf->fdir_filter_list, fdir_node) {
4801                 hlist_del(&filter->fdir_node);
4802                 kfree(filter);
4803         }
4804         pf->fdir_pf_active_filters = 0;
4805 }
4806
4807 /**
4808  * i40e_close - Disables a network interface
4809  * @netdev: network interface device structure
4810  *
4811  * The close entry point is called when an interface is de-activated
4812  * by the OS.  The hardware is still under the driver's control, but
4813  * this netdev interface is disabled.
4814  *
4815  * Returns 0, this is not allowed to fail
4816  **/
4817 #ifdef I40E_FCOE
4818 int i40e_close(struct net_device *netdev)
4819 #else
4820 static int i40e_close(struct net_device *netdev)
4821 #endif
4822 {
4823         struct i40e_netdev_priv *np = netdev_priv(netdev);
4824         struct i40e_vsi *vsi = np->vsi;
4825
4826         i40e_vsi_close(vsi);
4827
4828         return 0;
4829 }
4830
4831 /**
4832  * i40e_do_reset - Start a PF or Core Reset sequence
4833  * @pf: board private structure
4834  * @reset_flags: which reset is requested
4835  *
4836  * The essential difference in resets is that the PF Reset
4837  * doesn't clear the packet buffers, doesn't reset the PE
4838  * firmware, and doesn't bother the other PFs on the chip.
4839  **/
4840 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4841 {
4842         u32 val;
4843
4844         WARN_ON(in_interrupt());
4845
4846         if (i40e_check_asq_alive(&pf->hw))
4847                 i40e_vc_notify_reset(pf);
4848
4849         /* do the biggest reset indicated */
4850         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4851
4852                 /* Request a Global Reset
4853                  *
4854                  * This will start the chip's countdown to the actual full
4855                  * chip reset event, and a warning interrupt to be sent
4856                  * to all PFs, including the requestor.  Our handler
4857                  * for the warning interrupt will deal with the shutdown
4858                  * and recovery of the switch setup.
4859                  */
4860                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4861                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4862                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4863                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4864
4865         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4866
4867                 /* Request a Core Reset
4868                  *
4869                  * Same as Global Reset, except does *not* include the MAC/PHY
4870                  */
4871                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4872                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4873                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4874                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4875                 i40e_flush(&pf->hw);
4876
4877         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4878
4879                 /* Request a Firmware Reset
4880                  *
4881                  * Same as Global reset, plus restarting the
4882                  * embedded firmware engine.
4883                  */
4884                 /* enable EMP Reset */
4885                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4886                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4887                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4888
4889                 /* force the reset */
4890                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4891                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4892                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4893                 i40e_flush(&pf->hw);
4894
4895         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4896
4897                 /* Request a PF Reset
4898                  *
4899                  * Resets only the PF-specific registers
4900                  *
4901                  * This goes directly to the tear-down and rebuild of
4902                  * the switch, since we need to do all the recovery as
4903                  * for the Core Reset.
4904                  */
4905                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4906                 i40e_handle_reset_warning(pf);
4907
4908         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4909                 int v;
4910
4911                 /* Find the VSI(s) that requested a re-init */
4912                 dev_info(&pf->pdev->dev,
4913                          "VSI reinit requested\n");
4914                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4915                         struct i40e_vsi *vsi = pf->vsi[v];
4916                         if (vsi != NULL &&
4917                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4918                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4919                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4920                         }
4921                 }
4922
4923                 /* no further action needed, so return now */
4924                 return;
4925         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4926                 int v;
4927
4928                 /* Find the VSI(s) that needs to be brought down */
4929                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4930                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4931                         struct i40e_vsi *vsi = pf->vsi[v];
4932                         if (vsi != NULL &&
4933                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4934                                 set_bit(__I40E_DOWN, &vsi->state);
4935                                 i40e_down(vsi);
4936                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4937                         }
4938                 }
4939
4940                 /* no further action needed, so return now */
4941                 return;
4942         } else {
4943                 dev_info(&pf->pdev->dev,
4944                          "bad reset request 0x%08x\n", reset_flags);
4945                 return;
4946         }
4947 }
4948
4949 #ifdef CONFIG_I40E_DCB
4950 /**
4951  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4952  * @pf: board private structure
4953  * @old_cfg: current DCB config
4954  * @new_cfg: new DCB config
4955  **/
4956 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4957                             struct i40e_dcbx_config *old_cfg,
4958                             struct i40e_dcbx_config *new_cfg)
4959 {
4960         bool need_reconfig = false;
4961
4962         /* Check if ETS configuration has changed */
4963         if (memcmp(&new_cfg->etscfg,
4964                    &old_cfg->etscfg,
4965                    sizeof(new_cfg->etscfg))) {
4966                 /* If Priority Table has changed reconfig is needed */
4967                 if (memcmp(&new_cfg->etscfg.prioritytable,
4968                            &old_cfg->etscfg.prioritytable,
4969                            sizeof(new_cfg->etscfg.prioritytable))) {
4970                         need_reconfig = true;
4971                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4972                 }
4973
4974                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4975                            &old_cfg->etscfg.tcbwtable,
4976                            sizeof(new_cfg->etscfg.tcbwtable)))
4977                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4978
4979                 if (memcmp(&new_cfg->etscfg.tsatable,
4980                            &old_cfg->etscfg.tsatable,
4981                            sizeof(new_cfg->etscfg.tsatable)))
4982                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4983         }
4984
4985         /* Check if PFC configuration has changed */
4986         if (memcmp(&new_cfg->pfc,
4987                    &old_cfg->pfc,
4988                    sizeof(new_cfg->pfc))) {
4989                 need_reconfig = true;
4990                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4991         }
4992
4993         /* Check if APP Table has changed */
4994         if (memcmp(&new_cfg->app,
4995                    &old_cfg->app,
4996                    sizeof(new_cfg->app))) {
4997                 need_reconfig = true;
4998                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4999         }
5000
5001         return need_reconfig;
5002 }
5003
5004 /**
5005  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5006  * @pf: board private structure
5007  * @e: event info posted on ARQ
5008  **/
5009 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5010                                   struct i40e_arq_event_info *e)
5011 {
5012         struct i40e_aqc_lldp_get_mib *mib =
5013                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5014         struct i40e_hw *hw = &pf->hw;
5015         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5016         struct i40e_dcbx_config tmp_dcbx_cfg;
5017         bool need_reconfig = false;
5018         int ret = 0;
5019         u8 type;
5020
5021         /* Not DCB capable or capability disabled */
5022         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5023                 return ret;
5024
5025         /* Ignore if event is not for Nearest Bridge */
5026         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5027                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5028         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5029                 return ret;
5030
5031         /* Check MIB Type and return if event for Remote MIB update */
5032         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5033         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5034                 /* Update the remote cached instance and return */
5035                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5036                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5037                                 &hw->remote_dcbx_config);
5038                 goto exit;
5039         }
5040
5041         /* Convert/store the DCBX data from LLDPDU temporarily */
5042         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5043         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
5044         if (ret) {
5045                 /* Error in LLDPDU parsing return */
5046                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
5047                 goto exit;
5048         }
5049
5050         /* No change detected in DCBX configs */
5051         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5052                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5053                 goto exit;
5054         }
5055
5056         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
5057
5058         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
5059
5060         /* Overwrite the new configuration */
5061         *dcbx_cfg = tmp_dcbx_cfg;
5062
5063         if (!need_reconfig)
5064                 goto exit;
5065
5066         /* Enable DCB tagging only when more than one TC */
5067         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5068                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5069         else
5070                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5071
5072         /* Reconfiguration needed quiesce all VSIs */
5073         i40e_pf_quiesce_all_vsi(pf);
5074
5075         /* Changes in configuration update VEB/VSI */
5076         i40e_dcb_reconfigure(pf);
5077
5078         i40e_pf_unquiesce_all_vsi(pf);
5079 exit:
5080         return ret;
5081 }
5082 #endif /* CONFIG_I40E_DCB */
5083
5084 /**
5085  * i40e_do_reset_safe - Protected reset path for userland calls.
5086  * @pf: board private structure
5087  * @reset_flags: which reset is requested
5088  *
5089  **/
5090 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5091 {
5092         rtnl_lock();
5093         i40e_do_reset(pf, reset_flags);
5094         rtnl_unlock();
5095 }
5096
5097 /**
5098  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5099  * @pf: board private structure
5100  * @e: event info posted on ARQ
5101  *
5102  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5103  * and VF queues
5104  **/
5105 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5106                                            struct i40e_arq_event_info *e)
5107 {
5108         struct i40e_aqc_lan_overflow *data =
5109                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5110         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5111         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5112         struct i40e_hw *hw = &pf->hw;
5113         struct i40e_vf *vf;
5114         u16 vf_id;
5115
5116         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5117                 queue, qtx_ctl);
5118
5119         /* Queue belongs to VF, find the VF and issue VF reset */
5120         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5121             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5122                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5123                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5124                 vf_id -= hw->func_caps.vf_base_id;
5125                 vf = &pf->vf[vf_id];
5126                 i40e_vc_notify_vf_reset(vf);
5127                 /* Allow VF to process pending reset notification */
5128                 msleep(20);
5129                 i40e_reset_vf(vf, false);
5130         }
5131 }
5132
5133 /**
5134  * i40e_service_event_complete - Finish up the service event
5135  * @pf: board private structure
5136  **/
5137 static void i40e_service_event_complete(struct i40e_pf *pf)
5138 {
5139         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5140
5141         /* flush memory to make sure state is correct before next watchog */
5142         smp_mb__before_atomic();
5143         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5144 }
5145
5146 /**
5147  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5148  * @pf: board private structure
5149  **/
5150 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5151 {
5152         int val, fcnt_prog;
5153
5154         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5155         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5156         return fcnt_prog;
5157 }
5158
5159 /**
5160  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5161  * @pf: board private structure
5162  **/
5163 int i40e_get_current_fd_count(struct i40e_pf *pf)
5164 {
5165         int val, fcnt_prog;
5166         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5167         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5168                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5169                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5170         return fcnt_prog;
5171 }
5172
5173 /**
5174  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5175  * @pf: board private structure
5176  **/
5177 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5178 {
5179         u32 fcnt_prog, fcnt_avail;
5180
5181         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5182                 return;
5183
5184         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5185          * to re-enable
5186          */
5187         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5188         fcnt_avail = pf->fdir_pf_filter_count;
5189         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5190             (pf->fd_add_err == 0) ||
5191             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5192                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5193                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5194                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5195                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5196                 }
5197         }
5198         /* Wait for some more space to be available to turn on ATR */
5199         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5200                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5201                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5202                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5203                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5204                 }
5205         }
5206 }
5207
5208 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5209 /**
5210  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5211  * @pf: board private structure
5212  **/
5213 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5214 {
5215         int flush_wait_retry = 50;
5216         int reg;
5217
5218         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5219                 return;
5220
5221         if (time_after(jiffies, pf->fd_flush_timestamp +
5222                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5223                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5224                 pf->fd_flush_timestamp = jiffies;
5225                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5226                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5227                 /* flush all filters */
5228                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5229                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5230                 i40e_flush(&pf->hw);
5231                 pf->fd_flush_cnt++;
5232                 pf->fd_add_err = 0;
5233                 do {
5234                         /* Check FD flush status every 5-6msec */
5235                         usleep_range(5000, 6000);
5236                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5237                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5238                                 break;
5239                 } while (flush_wait_retry--);
5240                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5241                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5242                 } else {
5243                         /* replay sideband filters */
5244                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5245
5246                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5247                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5248                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5249                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5250                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5251                 }
5252         }
5253 }
5254
5255 /**
5256  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5257  * @pf: board private structure
5258  **/
5259 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5260 {
5261         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5262 }
5263
5264 /* We can see up to 256 filter programming desc in transit if the filters are
5265  * being applied really fast; before we see the first
5266  * filter miss error on Rx queue 0. Accumulating enough error messages before
5267  * reacting will make sure we don't cause flush too often.
5268  */
5269 #define I40E_MAX_FD_PROGRAM_ERROR 256
5270
5271 /**
5272  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5273  * @pf: board private structure
5274  **/
5275 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5276 {
5277
5278         /* if interface is down do nothing */
5279         if (test_bit(__I40E_DOWN, &pf->state))
5280                 return;
5281
5282         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5283                 return;
5284
5285         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5286             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5287             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5288                 i40e_fdir_flush_and_replay(pf);
5289
5290         i40e_fdir_check_and_reenable(pf);
5291
5292 }
5293
5294 /**
5295  * i40e_vsi_link_event - notify VSI of a link event
5296  * @vsi: vsi to be notified
5297  * @link_up: link up or down
5298  **/
5299 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5300 {
5301         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5302                 return;
5303
5304         switch (vsi->type) {
5305         case I40E_VSI_MAIN:
5306 #ifdef I40E_FCOE
5307         case I40E_VSI_FCOE:
5308 #endif
5309                 if (!vsi->netdev || !vsi->netdev_registered)
5310                         break;
5311
5312                 if (link_up) {
5313                         netif_carrier_on(vsi->netdev);
5314                         netif_tx_wake_all_queues(vsi->netdev);
5315                 } else {
5316                         netif_carrier_off(vsi->netdev);
5317                         netif_tx_stop_all_queues(vsi->netdev);
5318                 }
5319                 break;
5320
5321         case I40E_VSI_SRIOV:
5322                 break;
5323
5324         case I40E_VSI_VMDQ2:
5325         case I40E_VSI_CTRL:
5326         case I40E_VSI_MIRROR:
5327         default:
5328                 /* there is no notification for other VSIs */
5329                 break;
5330         }
5331 }
5332
5333 /**
5334  * i40e_veb_link_event - notify elements on the veb of a link event
5335  * @veb: veb to be notified
5336  * @link_up: link up or down
5337  **/
5338 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5339 {
5340         struct i40e_pf *pf;
5341         int i;
5342
5343         if (!veb || !veb->pf)
5344                 return;
5345         pf = veb->pf;
5346
5347         /* depth first... */
5348         for (i = 0; i < I40E_MAX_VEB; i++)
5349                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5350                         i40e_veb_link_event(pf->veb[i], link_up);
5351
5352         /* ... now the local VSIs */
5353         for (i = 0; i < pf->num_alloc_vsi; i++)
5354                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5355                         i40e_vsi_link_event(pf->vsi[i], link_up);
5356 }
5357
5358 /**
5359  * i40e_link_event - Update netif_carrier status
5360  * @pf: board private structure
5361  **/
5362 static void i40e_link_event(struct i40e_pf *pf)
5363 {
5364         bool new_link, old_link;
5365         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5366
5367         /* set this to force the get_link_status call to refresh state */
5368         pf->hw.phy.get_link_info = true;
5369
5370         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5371         new_link = i40e_get_link_status(&pf->hw);
5372
5373         if (new_link == old_link &&
5374             (test_bit(__I40E_DOWN, &vsi->state) ||
5375              new_link == netif_carrier_ok(vsi->netdev)))
5376                 return;
5377
5378         if (!test_bit(__I40E_DOWN, &vsi->state))
5379                 i40e_print_link_message(vsi, new_link);
5380
5381         /* Notify the base of the switch tree connected to
5382          * the link.  Floating VEBs are not notified.
5383          */
5384         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5385                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5386         else
5387                 i40e_vsi_link_event(vsi, new_link);
5388
5389         if (pf->vf)
5390                 i40e_vc_notify_link_state(pf);
5391
5392         if (pf->flags & I40E_FLAG_PTP)
5393                 i40e_ptp_set_increment(pf);
5394 }
5395
5396 /**
5397  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5398  * @pf: board private structure
5399  *
5400  * Set the per-queue flags to request a check for stuck queues in the irq
5401  * clean functions, then force interrupts to be sure the irq clean is called.
5402  **/
5403 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5404 {
5405         int i, v;
5406
5407         /* If we're down or resetting, just bail */
5408         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5409                 return;
5410
5411         /* for each VSI/netdev
5412          *     for each Tx queue
5413          *         set the check flag
5414          *     for each q_vector
5415          *         force an interrupt
5416          */
5417         for (v = 0; v < pf->num_alloc_vsi; v++) {
5418                 struct i40e_vsi *vsi = pf->vsi[v];
5419                 int armed = 0;
5420
5421                 if (!pf->vsi[v] ||
5422                     test_bit(__I40E_DOWN, &vsi->state) ||
5423                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5424                         continue;
5425
5426                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5427                         set_check_for_tx_hang(vsi->tx_rings[i]);
5428                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5429                                      &vsi->tx_rings[i]->state))
5430                                 armed++;
5431                 }
5432
5433                 if (armed) {
5434                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5435                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5436                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5437                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5438                         } else {
5439                                 u16 vec = vsi->base_vector - 1;
5440                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5441                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5442                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5443                                         wr32(&vsi->back->hw,
5444                                              I40E_PFINT_DYN_CTLN(vec), val);
5445                         }
5446                         i40e_flush(&vsi->back->hw);
5447                 }
5448         }
5449 }
5450
5451 /**
5452  * i40e_watchdog_subtask - periodic checks not using event driven response
5453  * @pf: board private structure
5454  **/
5455 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5456 {
5457         int i;
5458
5459         /* if interface is down do nothing */
5460         if (test_bit(__I40E_DOWN, &pf->state) ||
5461             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5462                 return;
5463
5464         /* make sure we don't do these things too often */
5465         if (time_before(jiffies, (pf->service_timer_previous +
5466                                   pf->service_timer_period)))
5467                 return;
5468         pf->service_timer_previous = jiffies;
5469
5470         i40e_check_hang_subtask(pf);
5471         i40e_link_event(pf);
5472
5473         /* Update the stats for active netdevs so the network stack
5474          * can look at updated numbers whenever it cares to
5475          */
5476         for (i = 0; i < pf->num_alloc_vsi; i++)
5477                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5478                         i40e_update_stats(pf->vsi[i]);
5479
5480         /* Update the stats for the active switching components */
5481         for (i = 0; i < I40E_MAX_VEB; i++)
5482                 if (pf->veb[i])
5483                         i40e_update_veb_stats(pf->veb[i]);
5484
5485         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5486 }
5487
5488 /**
5489  * i40e_reset_subtask - Set up for resetting the device and driver
5490  * @pf: board private structure
5491  **/
5492 static void i40e_reset_subtask(struct i40e_pf *pf)
5493 {
5494         u32 reset_flags = 0;
5495
5496         rtnl_lock();
5497         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5498                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5499                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5500         }
5501         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5502                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5503                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5504         }
5505         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5506                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5507                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5508         }
5509         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5510                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5511                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5512         }
5513         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5514                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5515                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5516         }
5517
5518         /* If there's a recovery already waiting, it takes
5519          * precedence before starting a new reset sequence.
5520          */
5521         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5522                 i40e_handle_reset_warning(pf);
5523                 goto unlock;
5524         }
5525
5526         /* If we're already down or resetting, just bail */
5527         if (reset_flags &&
5528             !test_bit(__I40E_DOWN, &pf->state) &&
5529             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5530                 i40e_do_reset(pf, reset_flags);
5531
5532 unlock:
5533         rtnl_unlock();
5534 }
5535
5536 /**
5537  * i40e_handle_link_event - Handle link event
5538  * @pf: board private structure
5539  * @e: event info posted on ARQ
5540  **/
5541 static void i40e_handle_link_event(struct i40e_pf *pf,
5542                                    struct i40e_arq_event_info *e)
5543 {
5544         struct i40e_hw *hw = &pf->hw;
5545         struct i40e_aqc_get_link_status *status =
5546                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5547         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5548
5549         /* save off old link status information */
5550         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5551                sizeof(pf->hw.phy.link_info_old));
5552
5553         /* Do a new status request to re-enable LSE reporting
5554          * and load new status information into the hw struct
5555          * This completely ignores any state information
5556          * in the ARQ event info, instead choosing to always
5557          * issue the AQ update link status command.
5558          */
5559         i40e_link_event(pf);
5560
5561         /* check for unqualified module, if link is down */
5562         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5563             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5564             (!(status->link_info & I40E_AQ_LINK_UP)))
5565                 dev_err(&pf->pdev->dev,
5566                         "The driver failed to link because an unqualified module was detected.\n");
5567 }
5568
5569 /**
5570  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5571  * @pf: board private structure
5572  **/
5573 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5574 {
5575         struct i40e_arq_event_info event;
5576         struct i40e_hw *hw = &pf->hw;
5577         u16 pending, i = 0;
5578         i40e_status ret;
5579         u16 opcode;
5580         u32 oldval;
5581         u32 val;
5582
5583         /* Do not run clean AQ when PF reset fails */
5584         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5585                 return;
5586
5587         /* check for error indications */
5588         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5589         oldval = val;
5590         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5591                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5592                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5593         }
5594         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5595                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5596                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5597         }
5598         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5599                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5600                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5601         }
5602         if (oldval != val)
5603                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5604
5605         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5606         oldval = val;
5607         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5608                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5609                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5610         }
5611         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5612                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5613                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5614         }
5615         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5616                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5617                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5618         }
5619         if (oldval != val)
5620                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5621
5622         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5623         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5624         if (!event.msg_buf)
5625                 return;
5626
5627         do {
5628                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5629                 ret = i40e_clean_arq_element(hw, &event, &pending);
5630                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5631                         break;
5632                 else if (ret) {
5633                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5634                         break;
5635                 }
5636
5637                 opcode = le16_to_cpu(event.desc.opcode);
5638                 switch (opcode) {
5639
5640                 case i40e_aqc_opc_get_link_status:
5641                         i40e_handle_link_event(pf, &event);
5642                         break;
5643                 case i40e_aqc_opc_send_msg_to_pf:
5644                         ret = i40e_vc_process_vf_msg(pf,
5645                                         le16_to_cpu(event.desc.retval),
5646                                         le32_to_cpu(event.desc.cookie_high),
5647                                         le32_to_cpu(event.desc.cookie_low),
5648                                         event.msg_buf,
5649                                         event.msg_size);
5650                         break;
5651                 case i40e_aqc_opc_lldp_update_mib:
5652                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5653 #ifdef CONFIG_I40E_DCB
5654                         rtnl_lock();
5655                         ret = i40e_handle_lldp_event(pf, &event);
5656                         rtnl_unlock();
5657 #endif /* CONFIG_I40E_DCB */
5658                         break;
5659                 case i40e_aqc_opc_event_lan_overflow:
5660                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5661                         i40e_handle_lan_overflow_event(pf, &event);
5662                         break;
5663                 case i40e_aqc_opc_send_msg_to_peer:
5664                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5665                         break;
5666                 default:
5667                         dev_info(&pf->pdev->dev,
5668                                  "ARQ Error: Unknown event 0x%04x received\n",
5669                                  opcode);
5670                         break;
5671                 }
5672         } while (pending && (i++ < pf->adminq_work_limit));
5673
5674         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5675         /* re-enable Admin queue interrupt cause */
5676         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5677         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5678         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5679         i40e_flush(hw);
5680
5681         kfree(event.msg_buf);
5682 }
5683
5684 /**
5685  * i40e_verify_eeprom - make sure eeprom is good to use
5686  * @pf: board private structure
5687  **/
5688 static void i40e_verify_eeprom(struct i40e_pf *pf)
5689 {
5690         int err;
5691
5692         err = i40e_diag_eeprom_test(&pf->hw);
5693         if (err) {
5694                 /* retry in case of garbage read */
5695                 err = i40e_diag_eeprom_test(&pf->hw);
5696                 if (err) {
5697                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5698                                  err);
5699                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5700                 }
5701         }
5702
5703         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5704                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5705                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5706         }
5707 }
5708
5709 /**
5710  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5711  * @veb: pointer to the VEB instance
5712  *
5713  * This is a recursive function that first builds the attached VSIs then
5714  * recurses in to build the next layer of VEB.  We track the connections
5715  * through our own index numbers because the seid's from the HW could
5716  * change across the reset.
5717  **/
5718 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5719 {
5720         struct i40e_vsi *ctl_vsi = NULL;
5721         struct i40e_pf *pf = veb->pf;
5722         int v, veb_idx;
5723         int ret;
5724
5725         /* build VSI that owns this VEB, temporarily attached to base VEB */
5726         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5727                 if (pf->vsi[v] &&
5728                     pf->vsi[v]->veb_idx == veb->idx &&
5729                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5730                         ctl_vsi = pf->vsi[v];
5731                         break;
5732                 }
5733         }
5734         if (!ctl_vsi) {
5735                 dev_info(&pf->pdev->dev,
5736                          "missing owner VSI for veb_idx %d\n", veb->idx);
5737                 ret = -ENOENT;
5738                 goto end_reconstitute;
5739         }
5740         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5741                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5742         ret = i40e_add_vsi(ctl_vsi);
5743         if (ret) {
5744                 dev_info(&pf->pdev->dev,
5745                          "rebuild of owner VSI failed: %d\n", ret);
5746                 goto end_reconstitute;
5747         }
5748         i40e_vsi_reset_stats(ctl_vsi);
5749
5750         /* create the VEB in the switch and move the VSI onto the VEB */
5751         ret = i40e_add_veb(veb, ctl_vsi);
5752         if (ret)
5753                 goto end_reconstitute;
5754
5755         /* create the remaining VSIs attached to this VEB */
5756         for (v = 0; v < pf->num_alloc_vsi; v++) {
5757                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5758                         continue;
5759
5760                 if (pf->vsi[v]->veb_idx == veb->idx) {
5761                         struct i40e_vsi *vsi = pf->vsi[v];
5762                         vsi->uplink_seid = veb->seid;
5763                         ret = i40e_add_vsi(vsi);
5764                         if (ret) {
5765                                 dev_info(&pf->pdev->dev,
5766                                          "rebuild of vsi_idx %d failed: %d\n",
5767                                          v, ret);
5768                                 goto end_reconstitute;
5769                         }
5770                         i40e_vsi_reset_stats(vsi);
5771                 }
5772         }
5773
5774         /* create any VEBs attached to this VEB - RECURSION */
5775         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5776                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5777                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5778                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5779                         if (ret)
5780                                 break;
5781                 }
5782         }
5783
5784 end_reconstitute:
5785         return ret;
5786 }
5787
5788 /**
5789  * i40e_get_capabilities - get info about the HW
5790  * @pf: the PF struct
5791  **/
5792 static int i40e_get_capabilities(struct i40e_pf *pf)
5793 {
5794         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5795         u16 data_size;
5796         int buf_len;
5797         int err;
5798
5799         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5800         do {
5801                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5802                 if (!cap_buf)
5803                         return -ENOMEM;
5804
5805                 /* this loads the data into the hw struct for us */
5806                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5807                                             &data_size,
5808                                             i40e_aqc_opc_list_func_capabilities,
5809                                             NULL);
5810                 /* data loaded, buffer no longer needed */
5811                 kfree(cap_buf);
5812
5813                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5814                         /* retry with a larger buffer */
5815                         buf_len = data_size;
5816                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5817                         dev_info(&pf->pdev->dev,
5818                                  "capability discovery failed: aq=%d\n",
5819                                  pf->hw.aq.asq_last_status);
5820                         return -ENODEV;
5821                 }
5822         } while (err);
5823
5824         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5825             (pf->hw.aq.fw_maj_ver < 2)) {
5826                 pf->hw.func_caps.num_msix_vectors++;
5827                 pf->hw.func_caps.num_msix_vectors_vf++;
5828         }
5829
5830         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5831                 dev_info(&pf->pdev->dev,
5832                          "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",
5833                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5834                          pf->hw.func_caps.num_msix_vectors,
5835                          pf->hw.func_caps.num_msix_vectors_vf,
5836                          pf->hw.func_caps.fd_filters_guaranteed,
5837                          pf->hw.func_caps.fd_filters_best_effort,
5838                          pf->hw.func_caps.num_tx_qp,
5839                          pf->hw.func_caps.num_vsis);
5840
5841 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5842                        + pf->hw.func_caps.num_vfs)
5843         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5844                 dev_info(&pf->pdev->dev,
5845                          "got num_vsis %d, setting num_vsis to %d\n",
5846                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5847                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5848         }
5849
5850         return 0;
5851 }
5852
5853 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5854
5855 /**
5856  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5857  * @pf: board private structure
5858  **/
5859 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5860 {
5861         struct i40e_vsi *vsi;
5862         int i;
5863
5864         /* quick workaround for an NVM issue that leaves a critical register
5865          * uninitialized
5866          */
5867         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5868                 static const u32 hkey[] = {
5869                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5870                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5871                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5872                         0x95b3a76d};
5873
5874                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5875                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5876         }
5877
5878         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5879                 return;
5880
5881         /* find existing VSI and see if it needs configuring */
5882         vsi = NULL;
5883         for (i = 0; i < pf->num_alloc_vsi; i++) {
5884                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5885                         vsi = pf->vsi[i];
5886                         break;
5887                 }
5888         }
5889
5890         /* create a new VSI if none exists */
5891         if (!vsi) {
5892                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5893                                      pf->vsi[pf->lan_vsi]->seid, 0);
5894                 if (!vsi) {
5895                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5896                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5897                         return;
5898                 }
5899         }
5900
5901         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5902 }
5903
5904 /**
5905  * i40e_fdir_teardown - release the Flow Director resources
5906  * @pf: board private structure
5907  **/
5908 static void i40e_fdir_teardown(struct i40e_pf *pf)
5909 {
5910         int i;
5911
5912         i40e_fdir_filter_exit(pf);
5913         for (i = 0; i < pf->num_alloc_vsi; i++) {
5914                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5915                         i40e_vsi_release(pf->vsi[i]);
5916                         break;
5917                 }
5918         }
5919 }
5920
5921 /**
5922  * i40e_prep_for_reset - prep for the core to reset
5923  * @pf: board private structure
5924  *
5925  * Close up the VFs and other things in prep for pf Reset.
5926   **/
5927 static void i40e_prep_for_reset(struct i40e_pf *pf)
5928 {
5929         struct i40e_hw *hw = &pf->hw;
5930         i40e_status ret = 0;
5931         u32 v;
5932
5933         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5934         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5935                 return;
5936
5937         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5938
5939         /* quiesce the VSIs and their queues that are not already DOWN */
5940         i40e_pf_quiesce_all_vsi(pf);
5941
5942         for (v = 0; v < pf->num_alloc_vsi; v++) {
5943                 if (pf->vsi[v])
5944                         pf->vsi[v]->seid = 0;
5945         }
5946
5947         i40e_shutdown_adminq(&pf->hw);
5948
5949         /* call shutdown HMC */
5950         if (hw->hmc.hmc_obj) {
5951                 ret = i40e_shutdown_lan_hmc(hw);
5952                 if (ret)
5953                         dev_warn(&pf->pdev->dev,
5954                                  "shutdown_lan_hmc failed: %d\n", ret);
5955         }
5956 }
5957
5958 /**
5959  * i40e_send_version - update firmware with driver version
5960  * @pf: PF struct
5961  */
5962 static void i40e_send_version(struct i40e_pf *pf)
5963 {
5964         struct i40e_driver_version dv;
5965
5966         dv.major_version = DRV_VERSION_MAJOR;
5967         dv.minor_version = DRV_VERSION_MINOR;
5968         dv.build_version = DRV_VERSION_BUILD;
5969         dv.subbuild_version = 0;
5970         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5971         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5972 }
5973
5974 /**
5975  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5976  * @pf: board private structure
5977  * @reinit: if the Main VSI needs to re-initialized.
5978  **/
5979 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5980 {
5981         struct i40e_hw *hw = &pf->hw;
5982         u8 set_fc_aq_fail = 0;
5983         i40e_status ret;
5984         u32 v;
5985
5986         /* Now we wait for GRST to settle out.
5987          * We don't have to delete the VEBs or VSIs from the hw switch
5988          * because the reset will make them disappear.
5989          */
5990         ret = i40e_pf_reset(hw);
5991         if (ret) {
5992                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5993                 set_bit(__I40E_RESET_FAILED, &pf->state);
5994                 goto clear_recovery;
5995         }
5996         pf->pfr_count++;
5997
5998         if (test_bit(__I40E_DOWN, &pf->state))
5999                 goto clear_recovery;
6000         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6001
6002         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6003         ret = i40e_init_adminq(&pf->hw);
6004         if (ret) {
6005                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6006                 goto clear_recovery;
6007         }
6008
6009         /* re-verify the eeprom if we just had an EMP reset */
6010         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
6011                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
6012                 i40e_verify_eeprom(pf);
6013         }
6014
6015         i40e_clear_pxe_mode(hw);
6016         ret = i40e_get_capabilities(pf);
6017         if (ret) {
6018                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6019                          ret);
6020                 goto end_core_reset;
6021         }
6022
6023         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6024                                 hw->func_caps.num_rx_qp,
6025                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6026         if (ret) {
6027                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6028                 goto end_core_reset;
6029         }
6030         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6031         if (ret) {
6032                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6033                 goto end_core_reset;
6034         }
6035
6036 #ifdef CONFIG_I40E_DCB
6037         ret = i40e_init_pf_dcb(pf);
6038         if (ret) {
6039                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
6040                 goto end_core_reset;
6041         }
6042 #endif /* CONFIG_I40E_DCB */
6043 #ifdef I40E_FCOE
6044         ret = i40e_init_pf_fcoe(pf);
6045         if (ret)
6046                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6047
6048 #endif
6049         /* do basic switch setup */
6050         ret = i40e_setup_pf_switch(pf, reinit);
6051         if (ret)
6052                 goto end_core_reset;
6053
6054         /* driver is only interested in link up/down and module qualification
6055          * reports from firmware
6056          */
6057         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6058                                        I40E_AQ_EVENT_LINK_UPDOWN |
6059                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6060         if (ret)
6061                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6062
6063         /* make sure our flow control settings are restored */
6064         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6065         if (ret)
6066                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6067
6068         /* Rebuild the VSIs and VEBs that existed before reset.
6069          * They are still in our local switch element arrays, so only
6070          * need to rebuild the switch model in the HW.
6071          *
6072          * If there were VEBs but the reconstitution failed, we'll try
6073          * try to recover minimal use by getting the basic PF VSI working.
6074          */
6075         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6076                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6077                 /* find the one VEB connected to the MAC, and find orphans */
6078                 for (v = 0; v < I40E_MAX_VEB; v++) {
6079                         if (!pf->veb[v])
6080                                 continue;
6081
6082                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6083                             pf->veb[v]->uplink_seid == 0) {
6084                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6085
6086                                 if (!ret)
6087                                         continue;
6088
6089                                 /* If Main VEB failed, we're in deep doodoo,
6090                                  * so give up rebuilding the switch and set up
6091                                  * for minimal rebuild of PF VSI.
6092                                  * If orphan failed, we'll report the error
6093                                  * but try to keep going.
6094                                  */
6095                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6096                                         dev_info(&pf->pdev->dev,
6097                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6098                                                  ret);
6099                                         pf->vsi[pf->lan_vsi]->uplink_seid
6100                                                                 = pf->mac_seid;
6101                                         break;
6102                                 } else if (pf->veb[v]->uplink_seid == 0) {
6103                                         dev_info(&pf->pdev->dev,
6104                                                  "rebuild of orphan VEB failed: %d\n",
6105                                                  ret);
6106                                 }
6107                         }
6108                 }
6109         }
6110
6111         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6112                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6113                 /* no VEB, so rebuild only the Main VSI */
6114                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6115                 if (ret) {
6116                         dev_info(&pf->pdev->dev,
6117                                  "rebuild of Main VSI failed: %d\n", ret);
6118                         goto end_core_reset;
6119                 }
6120         }
6121
6122         msleep(75);
6123         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6124         if (ret) {
6125                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6126                          pf->hw.aq.asq_last_status);
6127         }
6128
6129         /* reinit the misc interrupt */
6130         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6131                 ret = i40e_setup_misc_vector(pf);
6132
6133         /* restart the VSIs that were rebuilt and running before the reset */
6134         i40e_pf_unquiesce_all_vsi(pf);
6135
6136         if (pf->num_alloc_vfs) {
6137                 for (v = 0; v < pf->num_alloc_vfs; v++)
6138                         i40e_reset_vf(&pf->vf[v], true);
6139         }
6140
6141         /* tell the firmware that we're starting */
6142         i40e_send_version(pf);
6143
6144 end_core_reset:
6145         clear_bit(__I40E_RESET_FAILED, &pf->state);
6146 clear_recovery:
6147         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6148 }
6149
6150 /**
6151  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6152  * @pf: board private structure
6153  *
6154  * Close up the VFs and other things in prep for a Core Reset,
6155  * then get ready to rebuild the world.
6156  **/
6157 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6158 {
6159         i40e_prep_for_reset(pf);
6160         i40e_reset_and_rebuild(pf, false);
6161 }
6162
6163 /**
6164  * i40e_handle_mdd_event
6165  * @pf: pointer to the pf structure
6166  *
6167  * Called from the MDD irq handler to identify possibly malicious vfs
6168  **/
6169 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6170 {
6171         struct i40e_hw *hw = &pf->hw;
6172         bool mdd_detected = false;
6173         bool pf_mdd_detected = false;
6174         struct i40e_vf *vf;
6175         u32 reg;
6176         int i;
6177
6178         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6179                 return;
6180
6181         /* find what triggered the MDD event */
6182         reg = rd32(hw, I40E_GL_MDET_TX);
6183         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6184                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6185                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6186                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6187                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6188                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6189                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6190                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6191                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6192                                 pf->hw.func_caps.base_queue;
6193                 if (netif_msg_tx_err(pf))
6194                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6195                                  event, queue, pf_num, vf_num);
6196                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6197                 mdd_detected = true;
6198         }
6199         reg = rd32(hw, I40E_GL_MDET_RX);
6200         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6201                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6202                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6203                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6204                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6205                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6206                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6207                                 pf->hw.func_caps.base_queue;
6208                 if (netif_msg_rx_err(pf))
6209                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6210                                  event, queue, func);
6211                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6212                 mdd_detected = true;
6213         }
6214
6215         if (mdd_detected) {
6216                 reg = rd32(hw, I40E_PF_MDET_TX);
6217                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6218                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6219                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6220                         pf_mdd_detected = true;
6221                 }
6222                 reg = rd32(hw, I40E_PF_MDET_RX);
6223                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6224                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6225                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6226                         pf_mdd_detected = true;
6227                 }
6228                 /* Queue belongs to the PF, initiate a reset */
6229                 if (pf_mdd_detected) {
6230                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6231                         i40e_service_event_schedule(pf);
6232                 }
6233         }
6234
6235         /* see if one of the VFs needs its hand slapped */
6236         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6237                 vf = &(pf->vf[i]);
6238                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6239                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6240                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6241                         vf->num_mdd_events++;
6242                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6243                                  i);
6244                 }
6245
6246                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6247                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6248                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6249                         vf->num_mdd_events++;
6250                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6251                                  i);
6252                 }
6253
6254                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6255                         dev_info(&pf->pdev->dev,
6256                                  "Too many MDD events on VF %d, disabled\n", i);
6257                         dev_info(&pf->pdev->dev,
6258                                  "Use PF Control I/F to re-enable the VF\n");
6259                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6260                 }
6261         }
6262
6263         /* re-enable mdd interrupt cause */
6264         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6265         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6266         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6267         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6268         i40e_flush(hw);
6269 }
6270
6271 #ifdef CONFIG_I40E_VXLAN
6272 /**
6273  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6274  * @pf: board private structure
6275  **/
6276 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6277 {
6278         struct i40e_hw *hw = &pf->hw;
6279         i40e_status ret;
6280         u8 filter_index;
6281         __be16 port;
6282         int i;
6283
6284         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6285                 return;
6286
6287         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6288
6289         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6290                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6291                         pf->pending_vxlan_bitmap &= ~(1 << i);
6292                         port = pf->vxlan_ports[i];
6293                         ret = port ?
6294                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6295                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6296                                                      &filter_index, NULL)
6297                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6298
6299                         if (ret) {
6300                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6301                                          port ? "adding" : "deleting",
6302                                          ntohs(port), port ? i : i);
6303
6304                                 pf->vxlan_ports[i] = 0;
6305                         } else {
6306                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6307                                          port ? "Added" : "Deleted",
6308                                          ntohs(port), port ? i : filter_index);
6309                         }
6310                 }
6311         }
6312 }
6313
6314 #endif
6315 /**
6316  * i40e_service_task - Run the driver's async subtasks
6317  * @work: pointer to work_struct containing our data
6318  **/
6319 static void i40e_service_task(struct work_struct *work)
6320 {
6321         struct i40e_pf *pf = container_of(work,
6322                                           struct i40e_pf,
6323                                           service_task);
6324         unsigned long start_time = jiffies;
6325
6326         /* don't bother with service tasks if a reset is in progress */
6327         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6328                 i40e_service_event_complete(pf);
6329                 return;
6330         }
6331
6332         i40e_reset_subtask(pf);
6333         i40e_handle_mdd_event(pf);
6334         i40e_vc_process_vflr_event(pf);
6335         i40e_watchdog_subtask(pf);
6336         i40e_fdir_reinit_subtask(pf);
6337         i40e_sync_filters_subtask(pf);
6338 #ifdef CONFIG_I40E_VXLAN
6339         i40e_sync_vxlan_filters_subtask(pf);
6340 #endif
6341         i40e_clean_adminq_subtask(pf);
6342
6343         i40e_service_event_complete(pf);
6344
6345         /* If the tasks have taken longer than one timer cycle or there
6346          * is more work to be done, reschedule the service task now
6347          * rather than wait for the timer to tick again.
6348          */
6349         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6350             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6351             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6352             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6353                 i40e_service_event_schedule(pf);
6354 }
6355
6356 /**
6357  * i40e_service_timer - timer callback
6358  * @data: pointer to PF struct
6359  **/
6360 static void i40e_service_timer(unsigned long data)
6361 {
6362         struct i40e_pf *pf = (struct i40e_pf *)data;
6363
6364         mod_timer(&pf->service_timer,
6365                   round_jiffies(jiffies + pf->service_timer_period));
6366         i40e_service_event_schedule(pf);
6367 }
6368
6369 /**
6370  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6371  * @vsi: the VSI being configured
6372  **/
6373 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6374 {
6375         struct i40e_pf *pf = vsi->back;
6376
6377         switch (vsi->type) {
6378         case I40E_VSI_MAIN:
6379                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6380                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6381                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6382                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6383                         vsi->num_q_vectors = pf->num_lan_msix;
6384                 else
6385                         vsi->num_q_vectors = 1;
6386
6387                 break;
6388
6389         case I40E_VSI_FDIR:
6390                 vsi->alloc_queue_pairs = 1;
6391                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6392                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6393                 vsi->num_q_vectors = 1;
6394                 break;
6395
6396         case I40E_VSI_VMDQ2:
6397                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6398                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6399                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6400                 vsi->num_q_vectors = pf->num_vmdq_msix;
6401                 break;
6402
6403         case I40E_VSI_SRIOV:
6404                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6405                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6406                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6407                 break;
6408
6409 #ifdef I40E_FCOE
6410         case I40E_VSI_FCOE:
6411                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6412                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6413                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6414                 vsi->num_q_vectors = pf->num_fcoe_msix;
6415                 break;
6416
6417 #endif /* I40E_FCOE */
6418         default:
6419                 WARN_ON(1);
6420                 return -ENODATA;
6421         }
6422
6423         return 0;
6424 }
6425
6426 /**
6427  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6428  * @type: VSI pointer
6429  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6430  *
6431  * On error: returns error code (negative)
6432  * On success: returns 0
6433  **/
6434 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6435 {
6436         int size;
6437         int ret = 0;
6438
6439         /* allocate memory for both Tx and Rx ring pointers */
6440         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6441         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6442         if (!vsi->tx_rings)
6443                 return -ENOMEM;
6444         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6445
6446         if (alloc_qvectors) {
6447                 /* allocate memory for q_vector pointers */
6448                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6449                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6450                 if (!vsi->q_vectors) {
6451                         ret = -ENOMEM;
6452                         goto err_vectors;
6453                 }
6454         }
6455         return ret;
6456
6457 err_vectors:
6458         kfree(vsi->tx_rings);
6459         return ret;
6460 }
6461
6462 /**
6463  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6464  * @pf: board private structure
6465  * @type: type of VSI
6466  *
6467  * On error: returns error code (negative)
6468  * On success: returns vsi index in PF (positive)
6469  **/
6470 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6471 {
6472         int ret = -ENODEV;
6473         struct i40e_vsi *vsi;
6474         int vsi_idx;
6475         int i;
6476
6477         /* Need to protect the allocation of the VSIs at the PF level */
6478         mutex_lock(&pf->switch_mutex);
6479
6480         /* VSI list may be fragmented if VSI creation/destruction has
6481          * been happening.  We can afford to do a quick scan to look
6482          * for any free VSIs in the list.
6483          *
6484          * find next empty vsi slot, looping back around if necessary
6485          */
6486         i = pf->next_vsi;
6487         while (i < pf->num_alloc_vsi && pf->vsi[i])
6488                 i++;
6489         if (i >= pf->num_alloc_vsi) {
6490                 i = 0;
6491                 while (i < pf->next_vsi && pf->vsi[i])
6492                         i++;
6493         }
6494
6495         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6496                 vsi_idx = i;             /* Found one! */
6497         } else {
6498                 ret = -ENODEV;
6499                 goto unlock_pf;  /* out of VSI slots! */
6500         }
6501         pf->next_vsi = ++i;
6502
6503         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6504         if (!vsi) {
6505                 ret = -ENOMEM;
6506                 goto unlock_pf;
6507         }
6508         vsi->type = type;
6509         vsi->back = pf;
6510         set_bit(__I40E_DOWN, &vsi->state);
6511         vsi->flags = 0;
6512         vsi->idx = vsi_idx;
6513         vsi->rx_itr_setting = pf->rx_itr_default;
6514         vsi->tx_itr_setting = pf->tx_itr_default;
6515         vsi->netdev_registered = false;
6516         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6517         INIT_LIST_HEAD(&vsi->mac_filter_list);
6518         vsi->irqs_ready = false;
6519
6520         ret = i40e_set_num_rings_in_vsi(vsi);
6521         if (ret)
6522                 goto err_rings;
6523
6524         ret = i40e_vsi_alloc_arrays(vsi, true);
6525         if (ret)
6526                 goto err_rings;
6527
6528         /* Setup default MSIX irq handler for VSI */
6529         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6530
6531         pf->vsi[vsi_idx] = vsi;
6532         ret = vsi_idx;
6533         goto unlock_pf;
6534
6535 err_rings:
6536         pf->next_vsi = i - 1;
6537         kfree(vsi);
6538 unlock_pf:
6539         mutex_unlock(&pf->switch_mutex);
6540         return ret;
6541 }
6542
6543 /**
6544  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6545  * @type: VSI pointer
6546  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6547  *
6548  * On error: returns error code (negative)
6549  * On success: returns 0
6550  **/
6551 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6552 {
6553         /* free the ring and vector containers */
6554         if (free_qvectors) {
6555                 kfree(vsi->q_vectors);
6556                 vsi->q_vectors = NULL;
6557         }
6558         kfree(vsi->tx_rings);
6559         vsi->tx_rings = NULL;
6560         vsi->rx_rings = NULL;
6561 }
6562
6563 /**
6564  * i40e_vsi_clear - Deallocate the VSI provided
6565  * @vsi: the VSI being un-configured
6566  **/
6567 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6568 {
6569         struct i40e_pf *pf;
6570
6571         if (!vsi)
6572                 return 0;
6573
6574         if (!vsi->back)
6575                 goto free_vsi;
6576         pf = vsi->back;
6577
6578         mutex_lock(&pf->switch_mutex);
6579         if (!pf->vsi[vsi->idx]) {
6580                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6581                         vsi->idx, vsi->idx, vsi, vsi->type);
6582                 goto unlock_vsi;
6583         }
6584
6585         if (pf->vsi[vsi->idx] != vsi) {
6586                 dev_err(&pf->pdev->dev,
6587                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6588                         pf->vsi[vsi->idx]->idx,
6589                         pf->vsi[vsi->idx],
6590                         pf->vsi[vsi->idx]->type,
6591                         vsi->idx, vsi, vsi->type);
6592                 goto unlock_vsi;
6593         }
6594
6595         /* updates the pf for this cleared vsi */
6596         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6597         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6598
6599         i40e_vsi_free_arrays(vsi, true);
6600
6601         pf->vsi[vsi->idx] = NULL;
6602         if (vsi->idx < pf->next_vsi)
6603                 pf->next_vsi = vsi->idx;
6604
6605 unlock_vsi:
6606         mutex_unlock(&pf->switch_mutex);
6607 free_vsi:
6608         kfree(vsi);
6609
6610         return 0;
6611 }
6612
6613 /**
6614  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6615  * @vsi: the VSI being cleaned
6616  **/
6617 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6618 {
6619         int i;
6620
6621         if (vsi->tx_rings && vsi->tx_rings[0]) {
6622                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6623                         kfree_rcu(vsi->tx_rings[i], rcu);
6624                         vsi->tx_rings[i] = NULL;
6625                         vsi->rx_rings[i] = NULL;
6626                 }
6627         }
6628 }
6629
6630 /**
6631  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6632  * @vsi: the VSI being configured
6633  **/
6634 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6635 {
6636         struct i40e_ring *tx_ring, *rx_ring;
6637         struct i40e_pf *pf = vsi->back;
6638         int i;
6639
6640         /* Set basic values in the rings to be used later during open() */
6641         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6642                 /* allocate space for both Tx and Rx in one shot */
6643                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6644                 if (!tx_ring)
6645                         goto err_out;
6646
6647                 tx_ring->queue_index = i;
6648                 tx_ring->reg_idx = vsi->base_queue + i;
6649                 tx_ring->ring_active = false;
6650                 tx_ring->vsi = vsi;
6651                 tx_ring->netdev = vsi->netdev;
6652                 tx_ring->dev = &pf->pdev->dev;
6653                 tx_ring->count = vsi->num_desc;
6654                 tx_ring->size = 0;
6655                 tx_ring->dcb_tc = 0;
6656                 vsi->tx_rings[i] = tx_ring;
6657
6658                 rx_ring = &tx_ring[1];
6659                 rx_ring->queue_index = i;
6660                 rx_ring->reg_idx = vsi->base_queue + i;
6661                 rx_ring->ring_active = false;
6662                 rx_ring->vsi = vsi;
6663                 rx_ring->netdev = vsi->netdev;
6664                 rx_ring->dev = &pf->pdev->dev;
6665                 rx_ring->count = vsi->num_desc;
6666                 rx_ring->size = 0;
6667                 rx_ring->dcb_tc = 0;
6668                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6669                         set_ring_16byte_desc_enabled(rx_ring);
6670                 else
6671                         clear_ring_16byte_desc_enabled(rx_ring);
6672                 vsi->rx_rings[i] = rx_ring;
6673         }
6674
6675         return 0;
6676
6677 err_out:
6678         i40e_vsi_clear_rings(vsi);
6679         return -ENOMEM;
6680 }
6681
6682 /**
6683  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6684  * @pf: board private structure
6685  * @vectors: the number of MSI-X vectors to request
6686  *
6687  * Returns the number of vectors reserved, or error
6688  **/
6689 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6690 {
6691         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6692                                         I40E_MIN_MSIX, vectors);
6693         if (vectors < 0) {
6694                 dev_info(&pf->pdev->dev,
6695                          "MSI-X vector reservation failed: %d\n", vectors);
6696                 vectors = 0;
6697         }
6698
6699         return vectors;
6700 }
6701
6702 /**
6703  * i40e_init_msix - Setup the MSIX capability
6704  * @pf: board private structure
6705  *
6706  * Work with the OS to set up the MSIX vectors needed.
6707  *
6708  * Returns 0 on success, negative on failure
6709  **/
6710 static int i40e_init_msix(struct i40e_pf *pf)
6711 {
6712         i40e_status err = 0;
6713         struct i40e_hw *hw = &pf->hw;
6714         int other_vecs = 0;
6715         int v_budget, i;
6716         int vec;
6717
6718         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6719                 return -ENODEV;
6720
6721         /* The number of vectors we'll request will be comprised of:
6722          *   - Add 1 for "other" cause for Admin Queue events, etc.
6723          *   - The number of LAN queue pairs
6724          *      - Queues being used for RSS.
6725          *              We don't need as many as max_rss_size vectors.
6726          *              use rss_size instead in the calculation since that
6727          *              is governed by number of cpus in the system.
6728          *      - assumes symmetric Tx/Rx pairing
6729          *   - The number of VMDq pairs
6730 #ifdef I40E_FCOE
6731          *   - The number of FCOE qps.
6732 #endif
6733          * Once we count this up, try the request.
6734          *
6735          * If we can't get what we want, we'll simplify to nearly nothing
6736          * and try again.  If that still fails, we punt.
6737          */
6738         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6739         pf->num_vmdq_msix = pf->num_vmdq_qps;
6740         other_vecs = 1;
6741         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6742         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6743                 other_vecs++;
6744
6745 #ifdef I40E_FCOE
6746         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6747                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6748                 v_budget += pf->num_fcoe_msix;
6749         }
6750
6751 #endif
6752         /* Scale down if necessary, and the rings will share vectors */
6753         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6754                         (hw->func_caps.num_msix_vectors - other_vecs));
6755         v_budget = pf->num_lan_msix + other_vecs;
6756
6757         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6758                                    GFP_KERNEL);
6759         if (!pf->msix_entries)
6760                 return -ENOMEM;
6761
6762         for (i = 0; i < v_budget; i++)
6763                 pf->msix_entries[i].entry = i;
6764         vec = i40e_reserve_msix_vectors(pf, v_budget);
6765
6766         if (vec != v_budget) {
6767                 /* If we have limited resources, we will start with no vectors
6768                  * for the special features and then allocate vectors to some
6769                  * of these features based on the policy and at the end disable
6770                  * the features that did not get any vectors.
6771                  */
6772 #ifdef I40E_FCOE
6773                 pf->num_fcoe_qps = 0;
6774                 pf->num_fcoe_msix = 0;
6775 #endif
6776                 pf->num_vmdq_msix = 0;
6777         }
6778
6779         if (vec < I40E_MIN_MSIX) {
6780                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6781                 kfree(pf->msix_entries);
6782                 pf->msix_entries = NULL;
6783                 return -ENODEV;
6784
6785         } else if (vec == I40E_MIN_MSIX) {
6786                 /* Adjust for minimal MSIX use */
6787                 pf->num_vmdq_vsis = 0;
6788                 pf->num_vmdq_qps = 0;
6789                 pf->num_lan_qps = 1;
6790                 pf->num_lan_msix = 1;
6791
6792         } else if (vec != v_budget) {
6793                 /* reserve the misc vector */
6794                 vec--;
6795
6796                 /* Scale vector usage down */
6797                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6798                 pf->num_vmdq_vsis = 1;
6799
6800                 /* partition out the remaining vectors */
6801                 switch (vec) {
6802                 case 2:
6803                         pf->num_lan_msix = 1;
6804                         break;
6805                 case 3:
6806 #ifdef I40E_FCOE
6807                         /* give one vector to FCoE */
6808                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6809                                 pf->num_lan_msix = 1;
6810                                 pf->num_fcoe_msix = 1;
6811                         }
6812 #else
6813                         pf->num_lan_msix = 2;
6814 #endif
6815                         break;
6816                 default:
6817 #ifdef I40E_FCOE
6818                         /* give one vector to FCoE */
6819                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6820                                 pf->num_fcoe_msix = 1;
6821                                 vec--;
6822                         }
6823 #endif
6824                         pf->num_lan_msix = min_t(int, (vec / 2),
6825                                                  pf->num_lan_qps);
6826                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6827                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6828                         break;
6829                 }
6830         }
6831
6832         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6833             (pf->num_vmdq_msix == 0)) {
6834                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6835                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6836         }
6837 #ifdef I40E_FCOE
6838
6839         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
6840                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
6841                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
6842         }
6843 #endif
6844         return err;
6845 }
6846
6847 /**
6848  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6849  * @vsi: the VSI being configured
6850  * @v_idx: index of the vector in the vsi struct
6851  *
6852  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6853  **/
6854 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6855 {
6856         struct i40e_q_vector *q_vector;
6857
6858         /* allocate q_vector */
6859         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6860         if (!q_vector)
6861                 return -ENOMEM;
6862
6863         q_vector->vsi = vsi;
6864         q_vector->v_idx = v_idx;
6865         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6866         if (vsi->netdev)
6867                 netif_napi_add(vsi->netdev, &q_vector->napi,
6868                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6869
6870         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6871         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6872
6873         /* tie q_vector and vsi together */
6874         vsi->q_vectors[v_idx] = q_vector;
6875
6876         return 0;
6877 }
6878
6879 /**
6880  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6881  * @vsi: the VSI being configured
6882  *
6883  * We allocate one q_vector per queue interrupt.  If allocation fails we
6884  * return -ENOMEM.
6885  **/
6886 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6887 {
6888         struct i40e_pf *pf = vsi->back;
6889         int v_idx, num_q_vectors;
6890         int err;
6891
6892         /* if not MSIX, give the one vector only to the LAN VSI */
6893         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6894                 num_q_vectors = vsi->num_q_vectors;
6895         else if (vsi == pf->vsi[pf->lan_vsi])
6896                 num_q_vectors = 1;
6897         else
6898                 return -EINVAL;
6899
6900         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6901                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6902                 if (err)
6903                         goto err_out;
6904         }
6905
6906         return 0;
6907
6908 err_out:
6909         while (v_idx--)
6910                 i40e_free_q_vector(vsi, v_idx);
6911
6912         return err;
6913 }
6914
6915 /**
6916  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6917  * @pf: board private structure to initialize
6918  **/
6919 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6920 {
6921         int err = 0;
6922
6923         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6924                 err = i40e_init_msix(pf);
6925                 if (err) {
6926                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6927 #ifdef I40E_FCOE
6928                                        I40E_FLAG_FCOE_ENABLED   |
6929 #endif
6930                                        I40E_FLAG_RSS_ENABLED    |
6931                                        I40E_FLAG_DCB_CAPABLE    |
6932                                        I40E_FLAG_SRIOV_ENABLED  |
6933                                        I40E_FLAG_FD_SB_ENABLED  |
6934                                        I40E_FLAG_FD_ATR_ENABLED |
6935                                        I40E_FLAG_VMDQ_ENABLED);
6936
6937                         /* rework the queue expectations without MSIX */
6938                         i40e_determine_queue_usage(pf);
6939                 }
6940         }
6941
6942         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6943             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6944                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6945                 err = pci_enable_msi(pf->pdev);
6946                 if (err) {
6947                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6948                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6949                 }
6950         }
6951
6952         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6953                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6954
6955         /* track first vector for misc interrupts */
6956         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6957 }
6958
6959 /**
6960  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6961  * @pf: board private structure
6962  *
6963  * This sets up the handler for MSIX 0, which is used to manage the
6964  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6965  * when in MSI or Legacy interrupt mode.
6966  **/
6967 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6968 {
6969         struct i40e_hw *hw = &pf->hw;
6970         int err = 0;
6971
6972         /* Only request the irq if this is the first time through, and
6973          * not when we're rebuilding after a Reset
6974          */
6975         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6976                 err = request_irq(pf->msix_entries[0].vector,
6977                                   i40e_intr, 0, pf->misc_int_name, pf);
6978                 if (err) {
6979                         dev_info(&pf->pdev->dev,
6980                                  "request_irq for %s failed: %d\n",
6981                                  pf->misc_int_name, err);
6982                         return -EFAULT;
6983                 }
6984         }
6985
6986         i40e_enable_misc_int_causes(hw);
6987
6988         /* associate no queues to the misc vector */
6989         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6990         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6991
6992         i40e_flush(hw);
6993
6994         i40e_irq_dynamic_enable_icr0(pf);
6995
6996         return err;
6997 }
6998
6999 /**
7000  * i40e_config_rss - Prepare for RSS if used
7001  * @pf: board private structure
7002  **/
7003 static int i40e_config_rss(struct i40e_pf *pf)
7004 {
7005         /* Set of random keys generated using kernel random number generator */
7006         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
7007                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
7008                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
7009                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
7010         struct i40e_hw *hw = &pf->hw;
7011         u32 lut = 0;
7012         int i, j;
7013         u64 hena;
7014         u32 reg_val;
7015
7016         /* Fill out hash function seed */
7017         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7018                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
7019
7020         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7021         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7022                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7023         hena |= I40E_DEFAULT_RSS_HENA;
7024         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7025         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7026
7027         /* Check capability and Set table size and register per hw expectation*/
7028         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7029         if (hw->func_caps.rss_table_size == 512) {
7030                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7031                 pf->rss_table_size = 512;
7032         } else {
7033                 pf->rss_table_size = 128;
7034                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7035         }
7036         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7037
7038         /* Populate the LUT with max no. of queues in round robin fashion */
7039         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7040
7041                 /* The assumption is that lan qp count will be the highest
7042                  * qp count for any PF VSI that needs RSS.
7043                  * If multiple VSIs need RSS support, all the qp counts
7044                  * for those VSIs should be a power of 2 for RSS to work.
7045                  * If LAN VSI is the only consumer for RSS then this requirement
7046                  * is not necessary.
7047                  */
7048                 if (j == pf->rss_size)
7049                         j = 0;
7050                 /* lut = 4-byte sliding window of 4 lut entries */
7051                 lut = (lut << 8) | (j &
7052                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7053                 /* On i = 3, we have 4 entries in lut; write to the register */
7054                 if ((i & 3) == 3)
7055                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7056         }
7057         i40e_flush(hw);
7058
7059         return 0;
7060 }
7061
7062 /**
7063  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7064  * @pf: board private structure
7065  * @queue_count: the requested queue count for rss.
7066  *
7067  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7068  * count which may be different from the requested queue count.
7069  **/
7070 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7071 {
7072         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7073                 return 0;
7074
7075         queue_count = min_t(int, queue_count, pf->rss_size_max);
7076
7077         if (queue_count != pf->rss_size) {
7078                 i40e_prep_for_reset(pf);
7079
7080                 pf->rss_size = queue_count;
7081
7082                 i40e_reset_and_rebuild(pf, true);
7083                 i40e_config_rss(pf);
7084         }
7085         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7086         return pf->rss_size;
7087 }
7088
7089 /**
7090  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7091  * @pf: board private structure to initialize
7092  *
7093  * i40e_sw_init initializes the Adapter private data structure.
7094  * Fields are initialized based on PCI device information and
7095  * OS network device settings (MTU size).
7096  **/
7097 static int i40e_sw_init(struct i40e_pf *pf)
7098 {
7099         int err = 0;
7100         int size;
7101
7102         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7103                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7104         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7105         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7106                 if (I40E_DEBUG_USER & debug)
7107                         pf->hw.debug_mask = debug;
7108                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7109                                                 I40E_DEFAULT_MSG_ENABLE);
7110         }
7111
7112         /* Set default capability flags */
7113         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7114                     I40E_FLAG_MSI_ENABLED     |
7115                     I40E_FLAG_MSIX_ENABLED    |
7116                     I40E_FLAG_RX_1BUF_ENABLED;
7117
7118         /* Set default ITR */
7119         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7120         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7121
7122         /* Depending on PF configurations, it is possible that the RSS
7123          * maximum might end up larger than the available queues
7124          */
7125         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7126         pf->rss_size = 1;
7127         pf->rss_size_max = min_t(int, pf->rss_size_max,
7128                                  pf->hw.func_caps.num_tx_qp);
7129         if (pf->hw.func_caps.rss) {
7130                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7131                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7132         }
7133
7134         /* MFP mode enabled */
7135         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7136                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7137                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7138         }
7139
7140         /* FW/NVM is not yet fixed in this regard */
7141         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7142             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7143                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7144                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7145                 /* Setup a counter for fd_atr per pf */
7146                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7147                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7148                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7149                         /* Setup a counter for fd_sb per pf */
7150                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7151                 } else {
7152                         dev_info(&pf->pdev->dev,
7153                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7154                 }
7155                 pf->fdir_pf_filter_count =
7156                                  pf->hw.func_caps.fd_filters_guaranteed;
7157                 pf->hw.fdir_shared_filter_count =
7158                                  pf->hw.func_caps.fd_filters_best_effort;
7159         }
7160
7161         if (pf->hw.func_caps.vmdq) {
7162                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7163                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7164                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7165         }
7166
7167 #ifdef I40E_FCOE
7168         err = i40e_init_pf_fcoe(pf);
7169         if (err)
7170                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7171
7172 #endif /* I40E_FCOE */
7173 #ifdef CONFIG_PCI_IOV
7174         if (pf->hw.func_caps.num_vfs) {
7175                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7176                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7177                 pf->num_req_vfs = min_t(int,
7178                                         pf->hw.func_caps.num_vfs,
7179                                         I40E_MAX_VF_COUNT);
7180         }
7181 #endif /* CONFIG_PCI_IOV */
7182         pf->eeprom_version = 0xDEAD;
7183         pf->lan_veb = I40E_NO_VEB;
7184         pf->lan_vsi = I40E_NO_VSI;
7185
7186         /* set up queue assignment tracking */
7187         size = sizeof(struct i40e_lump_tracking)
7188                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7189         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7190         if (!pf->qp_pile) {
7191                 err = -ENOMEM;
7192                 goto sw_init_done;
7193         }
7194         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7195         pf->qp_pile->search_hint = 0;
7196
7197         /* set up vector assignment tracking */
7198         size = sizeof(struct i40e_lump_tracking)
7199                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7200         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7201         if (!pf->irq_pile) {
7202                 kfree(pf->qp_pile);
7203                 err = -ENOMEM;
7204                 goto sw_init_done;
7205         }
7206         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7207         pf->irq_pile->search_hint = 0;
7208
7209         pf->tx_timeout_recovery_level = 1;
7210
7211         mutex_init(&pf->switch_mutex);
7212
7213 sw_init_done:
7214         return err;
7215 }
7216
7217 /**
7218  * i40e_set_ntuple - set the ntuple feature flag and take action
7219  * @pf: board private structure to initialize
7220  * @features: the feature set that the stack is suggesting
7221  *
7222  * returns a bool to indicate if reset needs to happen
7223  **/
7224 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7225 {
7226         bool need_reset = false;
7227
7228         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7229          * the state changed, we need to reset.
7230          */
7231         if (features & NETIF_F_NTUPLE) {
7232                 /* Enable filters and mark for reset */
7233                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7234                         need_reset = true;
7235                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7236         } else {
7237                 /* turn off filters, mark for reset and clear SW filter list */
7238                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7239                         need_reset = true;
7240                         i40e_fdir_filter_exit(pf);
7241                 }
7242                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7243                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7244                 /* reset fd counters */
7245                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7246                 pf->fdir_pf_active_filters = 0;
7247                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7248                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7249                 /* if ATR was auto disabled it can be re-enabled. */
7250                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7251                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7252                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7253         }
7254         return need_reset;
7255 }
7256
7257 /**
7258  * i40e_set_features - set the netdev feature flags
7259  * @netdev: ptr to the netdev being adjusted
7260  * @features: the feature set that the stack is suggesting
7261  **/
7262 static int i40e_set_features(struct net_device *netdev,
7263                              netdev_features_t features)
7264 {
7265         struct i40e_netdev_priv *np = netdev_priv(netdev);
7266         struct i40e_vsi *vsi = np->vsi;
7267         struct i40e_pf *pf = vsi->back;
7268         bool need_reset;
7269
7270         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7271                 i40e_vlan_stripping_enable(vsi);
7272         else
7273                 i40e_vlan_stripping_disable(vsi);
7274
7275         need_reset = i40e_set_ntuple(pf, features);
7276
7277         if (need_reset)
7278                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7279
7280         return 0;
7281 }
7282
7283 #ifdef CONFIG_I40E_VXLAN
7284 /**
7285  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7286  * @pf: board private structure
7287  * @port: The UDP port to look up
7288  *
7289  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7290  **/
7291 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7292 {
7293         u8 i;
7294
7295         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7296                 if (pf->vxlan_ports[i] == port)
7297                         return i;
7298         }
7299
7300         return i;
7301 }
7302
7303 /**
7304  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7305  * @netdev: This physical port's netdev
7306  * @sa_family: Socket Family that VXLAN is notifying us about
7307  * @port: New UDP port number that VXLAN started listening to
7308  **/
7309 static void i40e_add_vxlan_port(struct net_device *netdev,
7310                                 sa_family_t sa_family, __be16 port)
7311 {
7312         struct i40e_netdev_priv *np = netdev_priv(netdev);
7313         struct i40e_vsi *vsi = np->vsi;
7314         struct i40e_pf *pf = vsi->back;
7315         u8 next_idx;
7316         u8 idx;
7317
7318         if (sa_family == AF_INET6)
7319                 return;
7320
7321         idx = i40e_get_vxlan_port_idx(pf, port);
7322
7323         /* Check if port already exists */
7324         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7325                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7326                 return;
7327         }
7328
7329         /* Now check if there is space to add the new port */
7330         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7331
7332         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7333                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7334                             ntohs(port));
7335                 return;
7336         }
7337
7338         /* New port: add it and mark its index in the bitmap */
7339         pf->vxlan_ports[next_idx] = port;
7340         pf->pending_vxlan_bitmap |= (1 << next_idx);
7341
7342         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7343 }
7344
7345 /**
7346  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7347  * @netdev: This physical port's netdev
7348  * @sa_family: Socket Family that VXLAN is notifying us about
7349  * @port: UDP port number that VXLAN stopped listening to
7350  **/
7351 static void i40e_del_vxlan_port(struct net_device *netdev,
7352                                 sa_family_t sa_family, __be16 port)
7353 {
7354         struct i40e_netdev_priv *np = netdev_priv(netdev);
7355         struct i40e_vsi *vsi = np->vsi;
7356         struct i40e_pf *pf = vsi->back;
7357         u8 idx;
7358
7359         if (sa_family == AF_INET6)
7360                 return;
7361
7362         idx = i40e_get_vxlan_port_idx(pf, port);
7363
7364         /* Check if port already exists */
7365         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7366                 /* if port exists, set it to 0 (mark for deletion)
7367                  * and make it pending
7368                  */
7369                 pf->vxlan_ports[idx] = 0;
7370
7371                 pf->pending_vxlan_bitmap |= (1 << idx);
7372
7373                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7374         } else {
7375                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7376                             ntohs(port));
7377         }
7378 }
7379
7380 #endif
7381 static int i40e_get_phys_port_id(struct net_device *netdev,
7382                                  struct netdev_phys_port_id *ppid)
7383 {
7384         struct i40e_netdev_priv *np = netdev_priv(netdev);
7385         struct i40e_pf *pf = np->vsi->back;
7386         struct i40e_hw *hw = &pf->hw;
7387
7388         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7389                 return -EOPNOTSUPP;
7390
7391         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7392         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7393
7394         return 0;
7395 }
7396
7397 #ifdef HAVE_FDB_OPS
7398 #ifdef USE_CONST_DEV_UC_CHAR
7399 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7400                             struct net_device *dev,
7401                             const unsigned char *addr,
7402                             u16 flags)
7403 #else
7404 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7405                             struct net_device *dev,
7406                             unsigned char *addr,
7407                             u16 flags)
7408 #endif
7409 {
7410         struct i40e_netdev_priv *np = netdev_priv(dev);
7411         struct i40e_pf *pf = np->vsi->back;
7412         int err = 0;
7413
7414         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7415                 return -EOPNOTSUPP;
7416
7417         /* Hardware does not support aging addresses so if a
7418          * ndm_state is given only allow permanent addresses
7419          */
7420         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7421                 netdev_info(dev, "FDB only supports static addresses\n");
7422                 return -EINVAL;
7423         }
7424
7425         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7426                 err = dev_uc_add_excl(dev, addr);
7427         else if (is_multicast_ether_addr(addr))
7428                 err = dev_mc_add_excl(dev, addr);
7429         else
7430                 err = -EINVAL;
7431
7432         /* Only return duplicate errors if NLM_F_EXCL is set */
7433         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7434                 err = 0;
7435
7436         return err;
7437 }
7438
7439 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7440 #ifdef USE_CONST_DEV_UC_CHAR
7441 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7442                             struct net_device *dev,
7443                             const unsigned char *addr)
7444 #else
7445 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7446                             struct net_device *dev,
7447                             unsigned char *addr)
7448 #endif
7449 {
7450         struct i40e_netdev_priv *np = netdev_priv(dev);
7451         struct i40e_pf *pf = np->vsi->back;
7452         int err = -EOPNOTSUPP;
7453
7454         if (ndm->ndm_state & NUD_PERMANENT) {
7455                 netdev_info(dev, "FDB only supports static addresses\n");
7456                 return -EINVAL;
7457         }
7458
7459         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7460                 if (is_unicast_ether_addr(addr))
7461                         err = dev_uc_del(dev, addr);
7462                 else if (is_multicast_ether_addr(addr))
7463                         err = dev_mc_del(dev, addr);
7464                 else
7465                         err = -EINVAL;
7466         }
7467
7468         return err;
7469 }
7470
7471 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7472                              struct netlink_callback *cb,
7473                              struct net_device *dev,
7474                              struct net_device *filter_dev,
7475                              int idx)
7476 {
7477         struct i40e_netdev_priv *np = netdev_priv(dev);
7478         struct i40e_pf *pf = np->vsi->back;
7479
7480         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7481                 idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7482
7483         return idx;
7484 }
7485
7486 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7487 #endif /* HAVE_FDB_OPS */
7488 static const struct net_device_ops i40e_netdev_ops = {
7489         .ndo_open               = i40e_open,
7490         .ndo_stop               = i40e_close,
7491         .ndo_start_xmit         = i40e_lan_xmit_frame,
7492         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7493         .ndo_set_rx_mode        = i40e_set_rx_mode,
7494         .ndo_validate_addr      = eth_validate_addr,
7495         .ndo_set_mac_address    = i40e_set_mac,
7496         .ndo_change_mtu         = i40e_change_mtu,
7497         .ndo_do_ioctl           = i40e_ioctl,
7498         .ndo_tx_timeout         = i40e_tx_timeout,
7499         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7500         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7501 #ifdef CONFIG_NET_POLL_CONTROLLER
7502         .ndo_poll_controller    = i40e_netpoll,
7503 #endif
7504         .ndo_setup_tc           = i40e_setup_tc,
7505 #ifdef I40E_FCOE
7506         .ndo_fcoe_enable        = i40e_fcoe_enable,
7507         .ndo_fcoe_disable       = i40e_fcoe_disable,
7508 #endif
7509         .ndo_set_features       = i40e_set_features,
7510         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7511         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7512         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7513         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7514         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7515         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7516 #ifdef CONFIG_I40E_VXLAN
7517         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7518         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7519 #endif
7520         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7521 #ifdef HAVE_FDB_OPS
7522         .ndo_fdb_add            = i40e_ndo_fdb_add,
7523 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7524         .ndo_fdb_del            = i40e_ndo_fdb_del,
7525         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7526 #endif
7527 #endif
7528 };
7529
7530 /**
7531  * i40e_config_netdev - Setup the netdev flags
7532  * @vsi: the VSI being configured
7533  *
7534  * Returns 0 on success, negative value on failure
7535  **/
7536 static int i40e_config_netdev(struct i40e_vsi *vsi)
7537 {
7538         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7539         struct i40e_pf *pf = vsi->back;
7540         struct i40e_hw *hw = &pf->hw;
7541         struct i40e_netdev_priv *np;
7542         struct net_device *netdev;
7543         u8 mac_addr[ETH_ALEN];
7544         int etherdev_size;
7545
7546         etherdev_size = sizeof(struct i40e_netdev_priv);
7547         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7548         if (!netdev)
7549                 return -ENOMEM;
7550
7551         vsi->netdev = netdev;
7552         np = netdev_priv(netdev);
7553         np->vsi = vsi;
7554
7555         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7556                                   NETIF_F_GSO_UDP_TUNNEL |
7557                                   NETIF_F_TSO;
7558
7559         netdev->features = NETIF_F_SG                  |
7560                            NETIF_F_IP_CSUM             |
7561                            NETIF_F_SCTP_CSUM           |
7562                            NETIF_F_HIGHDMA             |
7563                            NETIF_F_GSO_UDP_TUNNEL      |
7564                            NETIF_F_HW_VLAN_CTAG_TX     |
7565                            NETIF_F_HW_VLAN_CTAG_RX     |
7566                            NETIF_F_HW_VLAN_CTAG_FILTER |
7567                            NETIF_F_IPV6_CSUM           |
7568                            NETIF_F_TSO                 |
7569                            NETIF_F_TSO_ECN             |
7570                            NETIF_F_TSO6                |
7571                            NETIF_F_RXCSUM              |
7572                            NETIF_F_RXHASH              |
7573                            0;
7574
7575         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7576                 netdev->features |= NETIF_F_NTUPLE;
7577
7578         /* copy netdev features into list of user selectable features */
7579         netdev->hw_features |= netdev->features;
7580
7581         if (vsi->type == I40E_VSI_MAIN) {
7582                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7583                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7584                 /* The following steps are necessary to prevent reception
7585                  * of tagged packets - some older NVM configurations load a
7586                  * default a MAC-VLAN filter that accepts any tagged packet
7587                  * which must be replaced by a normal filter.
7588                  */
7589                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7590                         i40e_add_filter(vsi, mac_addr,
7591                                         I40E_VLAN_ANY, false, true);
7592         } else {
7593                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7594                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7595                          pf->vsi[pf->lan_vsi]->netdev->name);
7596                 random_ether_addr(mac_addr);
7597                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7598         }
7599         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7600
7601         ether_addr_copy(netdev->dev_addr, mac_addr);
7602         ether_addr_copy(netdev->perm_addr, mac_addr);
7603         /* vlan gets same features (except vlan offload)
7604          * after any tweaks for specific VSI types
7605          */
7606         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7607                                                      NETIF_F_HW_VLAN_CTAG_RX |
7608                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7609         netdev->priv_flags |= IFF_UNICAST_FLT;
7610         netdev->priv_flags |= IFF_SUPP_NOFCS;
7611         /* Setup netdev TC information */
7612         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7613
7614         netdev->netdev_ops = &i40e_netdev_ops;
7615         netdev->watchdog_timeo = 5 * HZ;
7616         i40e_set_ethtool_ops(netdev);
7617 #ifdef I40E_FCOE
7618         i40e_fcoe_config_netdev(netdev, vsi);
7619 #endif
7620
7621         return 0;
7622 }
7623
7624 /**
7625  * i40e_vsi_delete - Delete a VSI from the switch
7626  * @vsi: the VSI being removed
7627  *
7628  * Returns 0 on success, negative value on failure
7629  **/
7630 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7631 {
7632         /* remove default VSI is not allowed */
7633         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7634                 return;
7635
7636         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7637 }
7638
7639 /**
7640  * i40e_add_vsi - Add a VSI to the switch
7641  * @vsi: the VSI being configured
7642  *
7643  * This initializes a VSI context depending on the VSI type to be added and
7644  * passes it down to the add_vsi aq command.
7645  **/
7646 static int i40e_add_vsi(struct i40e_vsi *vsi)
7647 {
7648         int ret = -ENODEV;
7649         struct i40e_mac_filter *f, *ftmp;
7650         struct i40e_pf *pf = vsi->back;
7651         struct i40e_hw *hw = &pf->hw;
7652         struct i40e_vsi_context ctxt;
7653         u8 enabled_tc = 0x1; /* TC0 enabled */
7654         int f_count = 0;
7655
7656         memset(&ctxt, 0, sizeof(ctxt));
7657         switch (vsi->type) {
7658         case I40E_VSI_MAIN:
7659                 /* The PF's main VSI is already setup as part of the
7660                  * device initialization, so we'll not bother with
7661                  * the add_vsi call, but we will retrieve the current
7662                  * VSI context.
7663                  */
7664                 ctxt.seid = pf->main_vsi_seid;
7665                 ctxt.pf_num = pf->hw.pf_id;
7666                 ctxt.vf_num = 0;
7667                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7668                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7669                 if (ret) {
7670                         dev_info(&pf->pdev->dev,
7671                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7672                                  ret, pf->hw.aq.asq_last_status);
7673                         return -ENOENT;
7674                 }
7675                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7676                 vsi->info.valid_sections = 0;
7677
7678                 vsi->seid = ctxt.seid;
7679                 vsi->id = ctxt.vsi_number;
7680
7681                 enabled_tc = i40e_pf_get_tc_map(pf);
7682
7683                 /* MFP mode setup queue map and update VSI */
7684                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7685                         memset(&ctxt, 0, sizeof(ctxt));
7686                         ctxt.seid = pf->main_vsi_seid;
7687                         ctxt.pf_num = pf->hw.pf_id;
7688                         ctxt.vf_num = 0;
7689                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7690                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7691                         if (ret) {
7692                                 dev_info(&pf->pdev->dev,
7693                                          "update vsi failed, aq_err=%d\n",
7694                                          pf->hw.aq.asq_last_status);
7695                                 ret = -ENOENT;
7696                                 goto err;
7697                         }
7698                         /* update the local VSI info queue map */
7699                         i40e_vsi_update_queue_map(vsi, &ctxt);
7700                         vsi->info.valid_sections = 0;
7701                 } else {
7702                         /* Default/Main VSI is only enabled for TC0
7703                          * reconfigure it to enable all TCs that are
7704                          * available on the port in SFP mode.
7705                          */
7706                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7707                         if (ret) {
7708                                 dev_info(&pf->pdev->dev,
7709                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7710                                          enabled_tc, ret,
7711                                          pf->hw.aq.asq_last_status);
7712                                 ret = -ENOENT;
7713                         }
7714                 }
7715                 break;
7716
7717         case I40E_VSI_FDIR:
7718                 ctxt.pf_num = hw->pf_id;
7719                 ctxt.vf_num = 0;
7720                 ctxt.uplink_seid = vsi->uplink_seid;
7721                 ctxt.connection_type = 0x1;     /* regular data port */
7722                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7723                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7724                 break;
7725
7726         case I40E_VSI_VMDQ2:
7727                 ctxt.pf_num = hw->pf_id;
7728                 ctxt.vf_num = 0;
7729                 ctxt.uplink_seid = vsi->uplink_seid;
7730                 ctxt.connection_type = 0x1;     /* regular data port */
7731                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7732
7733                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7734
7735                 /* This VSI is connected to VEB so the switch_id
7736                  * should be set to zero by default.
7737                  */
7738                 ctxt.info.switch_id = 0;
7739                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7740
7741                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7742                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7743                 break;
7744
7745         case I40E_VSI_SRIOV:
7746                 ctxt.pf_num = hw->pf_id;
7747                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7748                 ctxt.uplink_seid = vsi->uplink_seid;
7749                 ctxt.connection_type = 0x1;     /* regular data port */
7750                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7751
7752                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7753
7754                 /* This VSI is connected to VEB so the switch_id
7755                  * should be set to zero by default.
7756                  */
7757                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7758
7759                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7760                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7761                 if (pf->vf[vsi->vf_id].spoofchk) {
7762                         ctxt.info.valid_sections |=
7763                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7764                         ctxt.info.sec_flags |=
7765                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7766                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7767                 }
7768                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7769                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7770                 break;
7771
7772 #ifdef I40E_FCOE
7773         case I40E_VSI_FCOE:
7774                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7775                 if (ret) {
7776                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7777                         return ret;
7778                 }
7779                 break;
7780
7781 #endif /* I40E_FCOE */
7782         default:
7783                 return -ENODEV;
7784         }
7785
7786         if (vsi->type != I40E_VSI_MAIN) {
7787                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7788                 if (ret) {
7789                         dev_info(&vsi->back->pdev->dev,
7790                                  "add vsi failed, aq_err=%d\n",
7791                                  vsi->back->hw.aq.asq_last_status);
7792                         ret = -ENOENT;
7793                         goto err;
7794                 }
7795                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7796                 vsi->info.valid_sections = 0;
7797                 vsi->seid = ctxt.seid;
7798                 vsi->id = ctxt.vsi_number;
7799         }
7800
7801         /* If macvlan filters already exist, force them to get loaded */
7802         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7803                 f->changed = true;
7804                 f_count++;
7805
7806                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7807                         struct i40e_aqc_remove_macvlan_element_data element;
7808
7809                         memset(&element, 0, sizeof(element));
7810                         ether_addr_copy(element.mac_addr, f->macaddr);
7811                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7812                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7813                                                      &element, 1, NULL);
7814                         if (ret) {
7815                                 /* some older FW has a different default */
7816                                 element.flags |=
7817                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7818                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7819                                                        &element, 1, NULL);
7820                         }
7821
7822                         i40e_aq_mac_address_write(hw,
7823                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7824                                                   f->macaddr, NULL);
7825                 }
7826         }
7827         if (f_count) {
7828                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7829                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7830         }
7831
7832         /* Update VSI BW information */
7833         ret = i40e_vsi_get_bw_info(vsi);
7834         if (ret) {
7835                 dev_info(&pf->pdev->dev,
7836                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7837                          ret, pf->hw.aq.asq_last_status);
7838                 /* VSI is already added so not tearing that up */
7839                 ret = 0;
7840         }
7841
7842 err:
7843         return ret;
7844 }
7845
7846 /**
7847  * i40e_vsi_release - Delete a VSI and free its resources
7848  * @vsi: the VSI being removed
7849  *
7850  * Returns 0 on success or < 0 on error
7851  **/
7852 int i40e_vsi_release(struct i40e_vsi *vsi)
7853 {
7854         struct i40e_mac_filter *f, *ftmp;
7855         struct i40e_veb *veb = NULL;
7856         struct i40e_pf *pf;
7857         u16 uplink_seid;
7858         int i, n;
7859
7860         pf = vsi->back;
7861
7862         /* release of a VEB-owner or last VSI is not allowed */
7863         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7864                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7865                          vsi->seid, vsi->uplink_seid);
7866                 return -ENODEV;
7867         }
7868         if (vsi == pf->vsi[pf->lan_vsi] &&
7869             !test_bit(__I40E_DOWN, &pf->state)) {
7870                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7871                 return -ENODEV;
7872         }
7873
7874         uplink_seid = vsi->uplink_seid;
7875         if (vsi->type != I40E_VSI_SRIOV) {
7876                 if (vsi->netdev_registered) {
7877                         vsi->netdev_registered = false;
7878                         if (vsi->netdev) {
7879                                 /* results in a call to i40e_close() */
7880                                 unregister_netdev(vsi->netdev);
7881                         }
7882                 } else {
7883                         i40e_vsi_close(vsi);
7884                 }
7885                 i40e_vsi_disable_irq(vsi);
7886         }
7887
7888         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7889                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7890                                 f->is_vf, f->is_netdev);
7891         i40e_sync_vsi_filters(vsi);
7892
7893         i40e_vsi_delete(vsi);
7894         i40e_vsi_free_q_vectors(vsi);
7895         if (vsi->netdev) {
7896                 free_netdev(vsi->netdev);
7897                 vsi->netdev = NULL;
7898         }
7899         i40e_vsi_clear_rings(vsi);
7900         i40e_vsi_clear(vsi);
7901
7902         /* If this was the last thing on the VEB, except for the
7903          * controlling VSI, remove the VEB, which puts the controlling
7904          * VSI onto the next level down in the switch.
7905          *
7906          * Well, okay, there's one more exception here: don't remove
7907          * the orphan VEBs yet.  We'll wait for an explicit remove request
7908          * from up the network stack.
7909          */
7910         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7911                 if (pf->vsi[i] &&
7912                     pf->vsi[i]->uplink_seid == uplink_seid &&
7913                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7914                         n++;      /* count the VSIs */
7915                 }
7916         }
7917         for (i = 0; i < I40E_MAX_VEB; i++) {
7918                 if (!pf->veb[i])
7919                         continue;
7920                 if (pf->veb[i]->uplink_seid == uplink_seid)
7921                         n++;     /* count the VEBs */
7922                 if (pf->veb[i]->seid == uplink_seid)
7923                         veb = pf->veb[i];
7924         }
7925         if (n == 0 && veb && veb->uplink_seid != 0)
7926                 i40e_veb_release(veb);
7927
7928         return 0;
7929 }
7930
7931 /**
7932  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7933  * @vsi: ptr to the VSI
7934  *
7935  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7936  * corresponding SW VSI structure and initializes num_queue_pairs for the
7937  * newly allocated VSI.
7938  *
7939  * Returns 0 on success or negative on failure
7940  **/
7941 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7942 {
7943         int ret = -ENOENT;
7944         struct i40e_pf *pf = vsi->back;
7945
7946         if (vsi->q_vectors[0]) {
7947                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7948                          vsi->seid);
7949                 return -EEXIST;
7950         }
7951
7952         if (vsi->base_vector) {
7953                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7954                          vsi->seid, vsi->base_vector);
7955                 return -EEXIST;
7956         }
7957
7958         ret = i40e_vsi_alloc_q_vectors(vsi);
7959         if (ret) {
7960                 dev_info(&pf->pdev->dev,
7961                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7962                          vsi->num_q_vectors, vsi->seid, ret);
7963                 vsi->num_q_vectors = 0;
7964                 goto vector_setup_out;
7965         }
7966
7967         if (vsi->num_q_vectors)
7968                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7969                                                  vsi->num_q_vectors, vsi->idx);
7970         if (vsi->base_vector < 0) {
7971                 dev_info(&pf->pdev->dev,
7972                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
7973                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
7974                 i40e_vsi_free_q_vectors(vsi);
7975                 ret = -ENOENT;
7976                 goto vector_setup_out;
7977         }
7978
7979 vector_setup_out:
7980         return ret;
7981 }
7982
7983 /**
7984  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7985  * @vsi: pointer to the vsi.
7986  *
7987  * This re-allocates a vsi's queue resources.
7988  *
7989  * Returns pointer to the successfully allocated and configured VSI sw struct
7990  * on success, otherwise returns NULL on failure.
7991  **/
7992 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7993 {
7994         struct i40e_pf *pf = vsi->back;
7995         u8 enabled_tc;
7996         int ret;
7997
7998         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7999         i40e_vsi_clear_rings(vsi);
8000
8001         i40e_vsi_free_arrays(vsi, false);
8002         i40e_set_num_rings_in_vsi(vsi);
8003         ret = i40e_vsi_alloc_arrays(vsi, false);
8004         if (ret)
8005                 goto err_vsi;
8006
8007         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8008         if (ret < 0) {
8009                 dev_info(&pf->pdev->dev,
8010                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8011                          vsi->alloc_queue_pairs, vsi->seid, ret);
8012                 goto err_vsi;
8013         }
8014         vsi->base_queue = ret;
8015
8016         /* Update the FW view of the VSI. Force a reset of TC and queue
8017          * layout configurations.
8018          */
8019         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8020         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8021         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8022         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8023
8024         /* assign it some queues */
8025         ret = i40e_alloc_rings(vsi);
8026         if (ret)
8027                 goto err_rings;
8028
8029         /* map all of the rings to the q_vectors */
8030         i40e_vsi_map_rings_to_vectors(vsi);
8031         return vsi;
8032
8033 err_rings:
8034         i40e_vsi_free_q_vectors(vsi);
8035         if (vsi->netdev_registered) {
8036                 vsi->netdev_registered = false;
8037                 unregister_netdev(vsi->netdev);
8038                 free_netdev(vsi->netdev);
8039                 vsi->netdev = NULL;
8040         }
8041         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8042 err_vsi:
8043         i40e_vsi_clear(vsi);
8044         return NULL;
8045 }
8046
8047 /**
8048  * i40e_vsi_setup - Set up a VSI by a given type
8049  * @pf: board private structure
8050  * @type: VSI type
8051  * @uplink_seid: the switch element to link to
8052  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8053  *
8054  * This allocates the sw VSI structure and its queue resources, then add a VSI
8055  * to the identified VEB.
8056  *
8057  * Returns pointer to the successfully allocated and configure VSI sw struct on
8058  * success, otherwise returns NULL on failure.
8059  **/
8060 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8061                                 u16 uplink_seid, u32 param1)
8062 {
8063         struct i40e_vsi *vsi = NULL;
8064         struct i40e_veb *veb = NULL;
8065         int ret, i;
8066         int v_idx;
8067
8068         /* The requested uplink_seid must be either
8069          *     - the PF's port seid
8070          *              no VEB is needed because this is the PF
8071          *              or this is a Flow Director special case VSI
8072          *     - seid of an existing VEB
8073          *     - seid of a VSI that owns an existing VEB
8074          *     - seid of a VSI that doesn't own a VEB
8075          *              a new VEB is created and the VSI becomes the owner
8076          *     - seid of the PF VSI, which is what creates the first VEB
8077          *              this is a special case of the previous
8078          *
8079          * Find which uplink_seid we were given and create a new VEB if needed
8080          */
8081         for (i = 0; i < I40E_MAX_VEB; i++) {
8082                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8083                         veb = pf->veb[i];
8084                         break;
8085                 }
8086         }
8087
8088         if (!veb && uplink_seid != pf->mac_seid) {
8089
8090                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8091                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8092                                 vsi = pf->vsi[i];
8093                                 break;
8094                         }
8095                 }
8096                 if (!vsi) {
8097                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8098                                  uplink_seid);
8099                         return NULL;
8100                 }
8101
8102                 if (vsi->uplink_seid == pf->mac_seid)
8103                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8104                                              vsi->tc_config.enabled_tc);
8105                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8106                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8107                                              vsi->tc_config.enabled_tc);
8108
8109                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8110                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8111                                 veb = pf->veb[i];
8112                 }
8113                 if (!veb) {
8114                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8115                         return NULL;
8116                 }
8117
8118                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8119                 uplink_seid = veb->seid;
8120         }
8121
8122         /* get vsi sw struct */
8123         v_idx = i40e_vsi_mem_alloc(pf, type);
8124         if (v_idx < 0)
8125                 goto err_alloc;
8126         vsi = pf->vsi[v_idx];
8127         if (!vsi)
8128                 goto err_alloc;
8129         vsi->type = type;
8130         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8131
8132         if (type == I40E_VSI_MAIN)
8133                 pf->lan_vsi = v_idx;
8134         else if (type == I40E_VSI_SRIOV)
8135                 vsi->vf_id = param1;
8136         /* assign it some queues */
8137         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8138                                 vsi->idx);
8139         if (ret < 0) {
8140                 dev_info(&pf->pdev->dev,
8141                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8142                          vsi->alloc_queue_pairs, vsi->seid, ret);
8143                 goto err_vsi;
8144         }
8145         vsi->base_queue = ret;
8146
8147         /* get a VSI from the hardware */
8148         vsi->uplink_seid = uplink_seid;
8149         ret = i40e_add_vsi(vsi);
8150         if (ret)
8151                 goto err_vsi;
8152
8153         switch (vsi->type) {
8154         /* setup the netdev if needed */
8155         case I40E_VSI_MAIN:
8156         case I40E_VSI_VMDQ2:
8157         case I40E_VSI_FCOE:
8158                 ret = i40e_config_netdev(vsi);
8159                 if (ret)
8160                         goto err_netdev;
8161                 ret = register_netdev(vsi->netdev);
8162                 if (ret)
8163                         goto err_netdev;
8164                 vsi->netdev_registered = true;
8165                 netif_carrier_off(vsi->netdev);
8166 #ifdef CONFIG_I40E_DCB
8167                 /* Setup DCB netlink interface */
8168                 i40e_dcbnl_setup(vsi);
8169 #endif /* CONFIG_I40E_DCB */
8170                 /* fall through */
8171
8172         case I40E_VSI_FDIR:
8173                 /* set up vectors and rings if needed */
8174                 ret = i40e_vsi_setup_vectors(vsi);
8175                 if (ret)
8176                         goto err_msix;
8177
8178                 ret = i40e_alloc_rings(vsi);
8179                 if (ret)
8180                         goto err_rings;
8181
8182                 /* map all of the rings to the q_vectors */
8183                 i40e_vsi_map_rings_to_vectors(vsi);
8184
8185                 i40e_vsi_reset_stats(vsi);
8186                 break;
8187
8188         default:
8189                 /* no netdev or rings for the other VSI types */
8190                 break;
8191         }
8192
8193         return vsi;
8194
8195 err_rings:
8196         i40e_vsi_free_q_vectors(vsi);
8197 err_msix:
8198         if (vsi->netdev_registered) {
8199                 vsi->netdev_registered = false;
8200                 unregister_netdev(vsi->netdev);
8201                 free_netdev(vsi->netdev);
8202                 vsi->netdev = NULL;
8203         }
8204 err_netdev:
8205         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8206 err_vsi:
8207         i40e_vsi_clear(vsi);
8208 err_alloc:
8209         return NULL;
8210 }
8211
8212 /**
8213  * i40e_veb_get_bw_info - Query VEB BW information
8214  * @veb: the veb to query
8215  *
8216  * Query the Tx scheduler BW configuration data for given VEB
8217  **/
8218 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8219 {
8220         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8221         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8222         struct i40e_pf *pf = veb->pf;
8223         struct i40e_hw *hw = &pf->hw;
8224         u32 tc_bw_max;
8225         int ret = 0;
8226         int i;
8227
8228         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8229                                                   &bw_data, NULL);
8230         if (ret) {
8231                 dev_info(&pf->pdev->dev,
8232                          "query veb bw config failed, aq_err=%d\n",
8233                          hw->aq.asq_last_status);
8234                 goto out;
8235         }
8236
8237         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8238                                                    &ets_data, NULL);
8239         if (ret) {
8240                 dev_info(&pf->pdev->dev,
8241                          "query veb bw ets config failed, aq_err=%d\n",
8242                          hw->aq.asq_last_status);
8243                 goto out;
8244         }
8245
8246         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8247         veb->bw_max_quanta = ets_data.tc_bw_max;
8248         veb->is_abs_credits = bw_data.absolute_credits_enable;
8249         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8250                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8251         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8252                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8253                 veb->bw_tc_limit_credits[i] =
8254                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8255                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8256         }
8257
8258 out:
8259         return ret;
8260 }
8261
8262 /**
8263  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8264  * @pf: board private structure
8265  *
8266  * On error: returns error code (negative)
8267  * On success: returns vsi index in PF (positive)
8268  **/
8269 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8270 {
8271         int ret = -ENOENT;
8272         struct i40e_veb *veb;
8273         int i;
8274
8275         /* Need to protect the allocation of switch elements at the PF level */
8276         mutex_lock(&pf->switch_mutex);
8277
8278         /* VEB list may be fragmented if VEB creation/destruction has
8279          * been happening.  We can afford to do a quick scan to look
8280          * for any free slots in the list.
8281          *
8282          * find next empty veb slot, looping back around if necessary
8283          */
8284         i = 0;
8285         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8286                 i++;
8287         if (i >= I40E_MAX_VEB) {
8288                 ret = -ENOMEM;
8289                 goto err_alloc_veb;  /* out of VEB slots! */
8290         }
8291
8292         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8293         if (!veb) {
8294                 ret = -ENOMEM;
8295                 goto err_alloc_veb;
8296         }
8297         veb->pf = pf;
8298         veb->idx = i;
8299         veb->enabled_tc = 1;
8300
8301         pf->veb[i] = veb;
8302         ret = i;
8303 err_alloc_veb:
8304         mutex_unlock(&pf->switch_mutex);
8305         return ret;
8306 }
8307
8308 /**
8309  * i40e_switch_branch_release - Delete a branch of the switch tree
8310  * @branch: where to start deleting
8311  *
8312  * This uses recursion to find the tips of the branch to be
8313  * removed, deleting until we get back to and can delete this VEB.
8314  **/
8315 static void i40e_switch_branch_release(struct i40e_veb *branch)
8316 {
8317         struct i40e_pf *pf = branch->pf;
8318         u16 branch_seid = branch->seid;
8319         u16 veb_idx = branch->idx;
8320         int i;
8321
8322         /* release any VEBs on this VEB - RECURSION */
8323         for (i = 0; i < I40E_MAX_VEB; i++) {
8324                 if (!pf->veb[i])
8325                         continue;
8326                 if (pf->veb[i]->uplink_seid == branch->seid)
8327                         i40e_switch_branch_release(pf->veb[i]);
8328         }
8329
8330         /* Release the VSIs on this VEB, but not the owner VSI.
8331          *
8332          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8333          *       the VEB itself, so don't use (*branch) after this loop.
8334          */
8335         for (i = 0; i < pf->num_alloc_vsi; i++) {
8336                 if (!pf->vsi[i])
8337                         continue;
8338                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8339                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8340                         i40e_vsi_release(pf->vsi[i]);
8341                 }
8342         }
8343
8344         /* There's one corner case where the VEB might not have been
8345          * removed, so double check it here and remove it if needed.
8346          * This case happens if the veb was created from the debugfs
8347          * commands and no VSIs were added to it.
8348          */
8349         if (pf->veb[veb_idx])
8350                 i40e_veb_release(pf->veb[veb_idx]);
8351 }
8352
8353 /**
8354  * i40e_veb_clear - remove veb struct
8355  * @veb: the veb to remove
8356  **/
8357 static void i40e_veb_clear(struct i40e_veb *veb)
8358 {
8359         if (!veb)
8360                 return;
8361
8362         if (veb->pf) {
8363                 struct i40e_pf *pf = veb->pf;
8364
8365                 mutex_lock(&pf->switch_mutex);
8366                 if (pf->veb[veb->idx] == veb)
8367                         pf->veb[veb->idx] = NULL;
8368                 mutex_unlock(&pf->switch_mutex);
8369         }
8370
8371         kfree(veb);
8372 }
8373
8374 /**
8375  * i40e_veb_release - Delete a VEB and free its resources
8376  * @veb: the VEB being removed
8377  **/
8378 void i40e_veb_release(struct i40e_veb *veb)
8379 {
8380         struct i40e_vsi *vsi = NULL;
8381         struct i40e_pf *pf;
8382         int i, n = 0;
8383
8384         pf = veb->pf;
8385
8386         /* find the remaining VSI and check for extras */
8387         for (i = 0; i < pf->num_alloc_vsi; i++) {
8388                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8389                         n++;
8390                         vsi = pf->vsi[i];
8391                 }
8392         }
8393         if (n != 1) {
8394                 dev_info(&pf->pdev->dev,
8395                          "can't remove VEB %d with %d VSIs left\n",
8396                          veb->seid, n);
8397                 return;
8398         }
8399
8400         /* move the remaining VSI to uplink veb */
8401         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8402         if (veb->uplink_seid) {
8403                 vsi->uplink_seid = veb->uplink_seid;
8404                 if (veb->uplink_seid == pf->mac_seid)
8405                         vsi->veb_idx = I40E_NO_VEB;
8406                 else
8407                         vsi->veb_idx = veb->veb_idx;
8408         } else {
8409                 /* floating VEB */
8410                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8411                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8412         }
8413
8414         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8415         i40e_veb_clear(veb);
8416 }
8417
8418 /**
8419  * i40e_add_veb - create the VEB in the switch
8420  * @veb: the VEB to be instantiated
8421  * @vsi: the controlling VSI
8422  **/
8423 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8424 {
8425         bool is_default = false;
8426         bool is_cloud = false;
8427         int ret;
8428
8429         /* get a VEB from the hardware */
8430         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8431                               veb->enabled_tc, is_default,
8432                               is_cloud, &veb->seid, NULL);
8433         if (ret) {
8434                 dev_info(&veb->pf->pdev->dev,
8435                          "couldn't add VEB, err %d, aq_err %d\n",
8436                          ret, veb->pf->hw.aq.asq_last_status);
8437                 return -EPERM;
8438         }
8439
8440         /* get statistics counter */
8441         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8442                                          &veb->stats_idx, NULL, NULL, NULL);
8443         if (ret) {
8444                 dev_info(&veb->pf->pdev->dev,
8445                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8446                          ret, veb->pf->hw.aq.asq_last_status);
8447                 return -EPERM;
8448         }
8449         ret = i40e_veb_get_bw_info(veb);
8450         if (ret) {
8451                 dev_info(&veb->pf->pdev->dev,
8452                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8453                          ret, veb->pf->hw.aq.asq_last_status);
8454                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8455                 return -ENOENT;
8456         }
8457
8458         vsi->uplink_seid = veb->seid;
8459         vsi->veb_idx = veb->idx;
8460         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8461
8462         return 0;
8463 }
8464
8465 /**
8466  * i40e_veb_setup - Set up a VEB
8467  * @pf: board private structure
8468  * @flags: VEB setup flags
8469  * @uplink_seid: the switch element to link to
8470  * @vsi_seid: the initial VSI seid
8471  * @enabled_tc: Enabled TC bit-map
8472  *
8473  * This allocates the sw VEB structure and links it into the switch
8474  * It is possible and legal for this to be a duplicate of an already
8475  * existing VEB.  It is also possible for both uplink and vsi seids
8476  * to be zero, in order to create a floating VEB.
8477  *
8478  * Returns pointer to the successfully allocated VEB sw struct on
8479  * success, otherwise returns NULL on failure.
8480  **/
8481 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8482                                 u16 uplink_seid, u16 vsi_seid,
8483                                 u8 enabled_tc)
8484 {
8485         struct i40e_veb *veb, *uplink_veb = NULL;
8486         int vsi_idx, veb_idx;
8487         int ret;
8488
8489         /* if one seid is 0, the other must be 0 to create a floating relay */
8490         if ((uplink_seid == 0 || vsi_seid == 0) &&
8491             (uplink_seid + vsi_seid != 0)) {
8492                 dev_info(&pf->pdev->dev,
8493                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8494                          uplink_seid, vsi_seid);
8495                 return NULL;
8496         }
8497
8498         /* make sure there is such a vsi and uplink */
8499         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8500                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8501                         break;
8502         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8503                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8504                          vsi_seid);
8505                 return NULL;
8506         }
8507
8508         if (uplink_seid && uplink_seid != pf->mac_seid) {
8509                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8510                         if (pf->veb[veb_idx] &&
8511                             pf->veb[veb_idx]->seid == uplink_seid) {
8512                                 uplink_veb = pf->veb[veb_idx];
8513                                 break;
8514                         }
8515                 }
8516                 if (!uplink_veb) {
8517                         dev_info(&pf->pdev->dev,
8518                                  "uplink seid %d not found\n", uplink_seid);
8519                         return NULL;
8520                 }
8521         }
8522
8523         /* get veb sw struct */
8524         veb_idx = i40e_veb_mem_alloc(pf);
8525         if (veb_idx < 0)
8526                 goto err_alloc;
8527         veb = pf->veb[veb_idx];
8528         veb->flags = flags;
8529         veb->uplink_seid = uplink_seid;
8530         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8531         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8532
8533         /* create the VEB in the switch */
8534         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8535         if (ret)
8536                 goto err_veb;
8537         if (vsi_idx == pf->lan_vsi)
8538                 pf->lan_veb = veb->idx;
8539
8540         return veb;
8541
8542 err_veb:
8543         i40e_veb_clear(veb);
8544 err_alloc:
8545         return NULL;
8546 }
8547
8548 /**
8549  * i40e_setup_pf_switch_element - set pf vars based on switch type
8550  * @pf: board private structure
8551  * @ele: element we are building info from
8552  * @num_reported: total number of elements
8553  * @printconfig: should we print the contents
8554  *
8555  * helper function to assist in extracting a few useful SEID values.
8556  **/
8557 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8558                                 struct i40e_aqc_switch_config_element_resp *ele,
8559                                 u16 num_reported, bool printconfig)
8560 {
8561         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8562         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8563         u8 element_type = ele->element_type;
8564         u16 seid = le16_to_cpu(ele->seid);
8565
8566         if (printconfig)
8567                 dev_info(&pf->pdev->dev,
8568                          "type=%d seid=%d uplink=%d downlink=%d\n",
8569                          element_type, seid, uplink_seid, downlink_seid);
8570
8571         switch (element_type) {
8572         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8573                 pf->mac_seid = seid;
8574                 break;
8575         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8576                 /* Main VEB? */
8577                 if (uplink_seid != pf->mac_seid)
8578                         break;
8579                 if (pf->lan_veb == I40E_NO_VEB) {
8580                         int v;
8581
8582                         /* find existing or else empty VEB */
8583                         for (v = 0; v < I40E_MAX_VEB; v++) {
8584                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8585                                         pf->lan_veb = v;
8586                                         break;
8587                                 }
8588                         }
8589                         if (pf->lan_veb == I40E_NO_VEB) {
8590                                 v = i40e_veb_mem_alloc(pf);
8591                                 if (v < 0)
8592                                         break;
8593                                 pf->lan_veb = v;
8594                         }
8595                 }
8596
8597                 pf->veb[pf->lan_veb]->seid = seid;
8598                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8599                 pf->veb[pf->lan_veb]->pf = pf;
8600                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8601                 break;
8602         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8603                 if (num_reported != 1)
8604                         break;
8605                 /* This is immediately after a reset so we can assume this is
8606                  * the PF's VSI
8607                  */
8608                 pf->mac_seid = uplink_seid;
8609                 pf->pf_seid = downlink_seid;
8610                 pf->main_vsi_seid = seid;
8611                 if (printconfig)
8612                         dev_info(&pf->pdev->dev,
8613                                  "pf_seid=%d main_vsi_seid=%d\n",
8614                                  pf->pf_seid, pf->main_vsi_seid);
8615                 break;
8616         case I40E_SWITCH_ELEMENT_TYPE_PF:
8617         case I40E_SWITCH_ELEMENT_TYPE_VF:
8618         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8619         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8620         case I40E_SWITCH_ELEMENT_TYPE_PE:
8621         case I40E_SWITCH_ELEMENT_TYPE_PA:
8622                 /* ignore these for now */
8623                 break;
8624         default:
8625                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8626                          element_type, seid);
8627                 break;
8628         }
8629 }
8630
8631 /**
8632  * i40e_fetch_switch_configuration - Get switch config from firmware
8633  * @pf: board private structure
8634  * @printconfig: should we print the contents
8635  *
8636  * Get the current switch configuration from the device and
8637  * extract a few useful SEID values.
8638  **/
8639 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8640 {
8641         struct i40e_aqc_get_switch_config_resp *sw_config;
8642         u16 next_seid = 0;
8643         int ret = 0;
8644         u8 *aq_buf;
8645         int i;
8646
8647         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8648         if (!aq_buf)
8649                 return -ENOMEM;
8650
8651         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8652         do {
8653                 u16 num_reported, num_total;
8654
8655                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8656                                                 I40E_AQ_LARGE_BUF,
8657                                                 &next_seid, NULL);
8658                 if (ret) {
8659                         dev_info(&pf->pdev->dev,
8660                                  "get switch config failed %d aq_err=%x\n",
8661                                  ret, pf->hw.aq.asq_last_status);
8662                         kfree(aq_buf);
8663                         return -ENOENT;
8664                 }
8665
8666                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8667                 num_total = le16_to_cpu(sw_config->header.num_total);
8668
8669                 if (printconfig)
8670                         dev_info(&pf->pdev->dev,
8671                                  "header: %d reported %d total\n",
8672                                  num_reported, num_total);
8673
8674                 for (i = 0; i < num_reported; i++) {
8675                         struct i40e_aqc_switch_config_element_resp *ele =
8676                                 &sw_config->element[i];
8677
8678                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8679                                                      printconfig);
8680                 }
8681         } while (next_seid != 0);
8682
8683         kfree(aq_buf);
8684         return ret;
8685 }
8686
8687 /**
8688  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8689  * @pf: board private structure
8690  * @reinit: if the Main VSI needs to re-initialized.
8691  *
8692  * Returns 0 on success, negative value on failure
8693  **/
8694 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8695 {
8696         int ret;
8697
8698         /* find out what's out there already */
8699         ret = i40e_fetch_switch_configuration(pf, false);
8700         if (ret) {
8701                 dev_info(&pf->pdev->dev,
8702                          "couldn't fetch switch config, err %d, aq_err %d\n",
8703                          ret, pf->hw.aq.asq_last_status);
8704                 return ret;
8705         }
8706         i40e_pf_reset_stats(pf);
8707
8708         /* first time setup */
8709         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8710                 struct i40e_vsi *vsi = NULL;
8711                 u16 uplink_seid;
8712
8713                 /* Set up the PF VSI associated with the PF's main VSI
8714                  * that is already in the HW switch
8715                  */
8716                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8717                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8718                 else
8719                         uplink_seid = pf->mac_seid;
8720                 if (pf->lan_vsi == I40E_NO_VSI)
8721                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8722                 else if (reinit)
8723                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8724                 if (!vsi) {
8725                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8726                         i40e_fdir_teardown(pf);
8727                         return -EAGAIN;
8728                 }
8729         } else {
8730                 /* force a reset of TC and queue layout configurations */
8731                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8732                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8733                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8734                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8735         }
8736         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8737
8738         i40e_fdir_sb_setup(pf);
8739
8740         /* Setup static PF queue filter control settings */
8741         ret = i40e_setup_pf_filter_control(pf);
8742         if (ret) {
8743                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8744                          ret);
8745                 /* Failure here should not stop continuing other steps */
8746         }
8747
8748         /* enable RSS in the HW, even for only one queue, as the stack can use
8749          * the hash
8750          */
8751         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8752                 i40e_config_rss(pf);
8753
8754         /* fill in link information and enable LSE reporting */
8755         i40e_update_link_info(&pf->hw, true);
8756         i40e_link_event(pf);
8757
8758         /* Initialize user-specific link properties */
8759         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8760                                   I40E_AQ_AN_COMPLETED) ? true : false);
8761
8762         /* fill in link information and enable LSE reporting */
8763         i40e_update_link_info(&pf->hw, true);
8764         i40e_link_event(pf);
8765
8766         /* Initialize user-specific link properties */
8767         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8768                                   I40E_AQ_AN_COMPLETED) ? true : false);
8769
8770         i40e_ptp_init(pf);
8771
8772         return ret;
8773 }
8774
8775 /**
8776  * i40e_determine_queue_usage - Work out queue distribution
8777  * @pf: board private structure
8778  **/
8779 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8780 {
8781         int queues_left;
8782
8783         pf->num_lan_qps = 0;
8784 #ifdef I40E_FCOE
8785         pf->num_fcoe_qps = 0;
8786 #endif
8787
8788         /* Find the max queues to be put into basic use.  We'll always be
8789          * using TC0, whether or not DCB is running, and TC0 will get the
8790          * big RSS set.
8791          */
8792         queues_left = pf->hw.func_caps.num_tx_qp;
8793
8794         if ((queues_left == 1) ||
8795             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8796                 /* one qp for PF, no queues for anything else */
8797                 queues_left = 0;
8798                 pf->rss_size = pf->num_lan_qps = 1;
8799
8800                 /* make sure all the fancies are disabled */
8801                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8802 #ifdef I40E_FCOE
8803                                I40E_FLAG_FCOE_ENABLED   |
8804 #endif
8805                                I40E_FLAG_FD_SB_ENABLED  |
8806                                I40E_FLAG_FD_ATR_ENABLED |
8807                                I40E_FLAG_DCB_CAPABLE    |
8808                                I40E_FLAG_SRIOV_ENABLED  |
8809                                I40E_FLAG_VMDQ_ENABLED);
8810         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8811                                   I40E_FLAG_FD_SB_ENABLED |
8812                                   I40E_FLAG_FD_ATR_ENABLED |
8813                                   I40E_FLAG_DCB_CAPABLE))) {
8814                 /* one qp for PF */
8815                 pf->rss_size = pf->num_lan_qps = 1;
8816                 queues_left -= pf->num_lan_qps;
8817
8818                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8819 #ifdef I40E_FCOE
8820                                I40E_FLAG_FCOE_ENABLED   |
8821 #endif
8822                                I40E_FLAG_FD_SB_ENABLED  |
8823                                I40E_FLAG_FD_ATR_ENABLED |
8824                                I40E_FLAG_DCB_ENABLED    |
8825                                I40E_FLAG_VMDQ_ENABLED);
8826         } else {
8827                 /* Not enough queues for all TCs */
8828                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8829                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8830                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8831                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8832                 }
8833                 pf->num_lan_qps = pf->rss_size_max;
8834                 queues_left -= pf->num_lan_qps;
8835         }
8836
8837 #ifdef I40E_FCOE
8838         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8839                 if (I40E_DEFAULT_FCOE <= queues_left) {
8840                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8841                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8842                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8843                 } else {
8844                         pf->num_fcoe_qps = 0;
8845                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8846                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8847                 }
8848
8849                 queues_left -= pf->num_fcoe_qps;
8850         }
8851
8852 #endif
8853         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8854                 if (queues_left > 1) {
8855                         queues_left -= 1; /* save 1 queue for FD */
8856                 } else {
8857                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8858                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8859                 }
8860         }
8861
8862         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8863             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8864                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8865                                         (queues_left / pf->num_vf_qps));
8866                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8867         }
8868
8869         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8870             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8871                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8872                                           (queues_left / pf->num_vmdq_qps));
8873                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8874         }
8875
8876         pf->queues_left = queues_left;
8877 #ifdef I40E_FCOE
8878         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
8879 #endif
8880 }
8881
8882 /**
8883  * i40e_setup_pf_filter_control - Setup PF static filter control
8884  * @pf: PF to be setup
8885  *
8886  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8887  * settings. If PE/FCoE are enabled then it will also set the per PF
8888  * based filter sizes required for them. It also enables Flow director,
8889  * ethertype and macvlan type filter settings for the pf.
8890  *
8891  * Returns 0 on success, negative on failure
8892  **/
8893 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8894 {
8895         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8896
8897         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8898
8899         /* Flow Director is enabled */
8900         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8901                 settings->enable_fdir = true;
8902
8903         /* Ethtype and MACVLAN filters enabled for PF */
8904         settings->enable_ethtype = true;
8905         settings->enable_macvlan = true;
8906
8907         if (i40e_set_filter_control(&pf->hw, settings))
8908                 return -ENOENT;
8909
8910         return 0;
8911 }
8912
8913 #define INFO_STRING_LEN 255
8914 static void i40e_print_features(struct i40e_pf *pf)
8915 {
8916         struct i40e_hw *hw = &pf->hw;
8917         char *buf, *string;
8918
8919         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8920         if (!string) {
8921                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8922                 return;
8923         }
8924
8925         buf = string;
8926
8927         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8928 #ifdef CONFIG_PCI_IOV
8929         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8930 #endif
8931         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8932                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8933
8934         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8935                 buf += sprintf(buf, "RSS ");
8936         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8937                 buf += sprintf(buf, "FD_ATR ");
8938         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8939                 buf += sprintf(buf, "FD_SB ");
8940                 buf += sprintf(buf, "NTUPLE ");
8941         }
8942         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8943                 buf += sprintf(buf, "DCB ");
8944         if (pf->flags & I40E_FLAG_PTP)
8945                 buf += sprintf(buf, "PTP ");
8946 #ifdef I40E_FCOE
8947         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
8948                 buf += sprintf(buf, "FCOE ");
8949 #endif
8950
8951         BUG_ON(buf > (string + INFO_STRING_LEN));
8952         dev_info(&pf->pdev->dev, "%s\n", string);
8953         kfree(string);
8954 }
8955
8956 /**
8957  * i40e_probe - Device initialization routine
8958  * @pdev: PCI device information struct
8959  * @ent: entry in i40e_pci_tbl
8960  *
8961  * i40e_probe initializes a pf identified by a pci_dev structure.
8962  * The OS initialization, configuring of the pf private structure,
8963  * and a hardware reset occur.
8964  *
8965  * Returns 0 on success, negative on failure
8966  **/
8967 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8968 {
8969         struct i40e_pf *pf;
8970         struct i40e_hw *hw;
8971         static u16 pfs_found;
8972         u16 link_status;
8973         int err = 0;
8974         u32 len;
8975         u32 i;
8976
8977         err = pci_enable_device_mem(pdev);
8978         if (err)
8979                 return err;
8980
8981         /* set up for high or low dma */
8982         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8983         if (err) {
8984                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8985                 if (err) {
8986                         dev_err(&pdev->dev,
8987                                 "DMA configuration failed: 0x%x\n", err);
8988                         goto err_dma;
8989                 }
8990         }
8991
8992         /* set up pci connections */
8993         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8994                                            IORESOURCE_MEM), i40e_driver_name);
8995         if (err) {
8996                 dev_info(&pdev->dev,
8997                          "pci_request_selected_regions failed %d\n", err);
8998                 goto err_pci_reg;
8999         }
9000
9001         pci_enable_pcie_error_reporting(pdev);
9002         pci_set_master(pdev);
9003
9004         /* Now that we have a PCI connection, we need to do the
9005          * low level device setup.  This is primarily setting up
9006          * the Admin Queue structures and then querying for the
9007          * device's current profile information.
9008          */
9009         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9010         if (!pf) {
9011                 err = -ENOMEM;
9012                 goto err_pf_alloc;
9013         }
9014         pf->next_vsi = 0;
9015         pf->pdev = pdev;
9016         set_bit(__I40E_DOWN, &pf->state);
9017
9018         hw = &pf->hw;
9019         hw->back = pf;
9020         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9021                               pci_resource_len(pdev, 0));
9022         if (!hw->hw_addr) {
9023                 err = -EIO;
9024                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9025                          (unsigned int)pci_resource_start(pdev, 0),
9026                          (unsigned int)pci_resource_len(pdev, 0), err);
9027                 goto err_ioremap;
9028         }
9029         hw->vendor_id = pdev->vendor;
9030         hw->device_id = pdev->device;
9031         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9032         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9033         hw->subsystem_device_id = pdev->subsystem_device;
9034         hw->bus.device = PCI_SLOT(pdev->devfn);
9035         hw->bus.func = PCI_FUNC(pdev->devfn);
9036         pf->instance = pfs_found;
9037
9038         if (debug != -1) {
9039                 pf->msg_enable = pf->hw.debug_mask;
9040                 pf->msg_enable = debug;
9041         }
9042
9043         /* do a special CORER for clearing PXE mode once at init */
9044         if (hw->revision_id == 0 &&
9045             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9046                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9047                 i40e_flush(hw);
9048                 msleep(200);
9049                 pf->corer_count++;
9050
9051                 i40e_clear_pxe_mode(hw);
9052         }
9053
9054         /* Reset here to make sure all is clean and to define PF 'n' */
9055         i40e_clear_hw(hw);
9056         err = i40e_pf_reset(hw);
9057         if (err) {
9058                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9059                 goto err_pf_reset;
9060         }
9061         pf->pfr_count++;
9062
9063         hw->aq.num_arq_entries = I40E_AQ_LEN;
9064         hw->aq.num_asq_entries = I40E_AQ_LEN;
9065         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9066         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9067         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9068         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
9069                  "%s-pf%d:misc",
9070                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
9071
9072         err = i40e_init_shared_code(hw);
9073         if (err) {
9074                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9075                 goto err_pf_reset;
9076         }
9077
9078         /* set up a default setting for link flow control */
9079         pf->hw.fc.requested_mode = I40E_FC_NONE;
9080
9081         err = i40e_init_adminq(hw);
9082         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9083         if (err) {
9084                 dev_info(&pdev->dev,
9085                          "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");
9086                 goto err_pf_reset;
9087         }
9088
9089         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9090             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9091                 dev_info(&pdev->dev,
9092                          "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");
9093         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9094                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9095                 dev_info(&pdev->dev,
9096                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9097
9098
9099         i40e_verify_eeprom(pf);
9100
9101         /* Rev 0 hardware was never productized */
9102         if (hw->revision_id < 1)
9103                 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");
9104
9105         i40e_clear_pxe_mode(hw);
9106         err = i40e_get_capabilities(pf);
9107         if (err)
9108                 goto err_adminq_setup;
9109
9110         err = i40e_sw_init(pf);
9111         if (err) {
9112                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9113                 goto err_sw_init;
9114         }
9115
9116         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9117                                 hw->func_caps.num_rx_qp,
9118                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9119         if (err) {
9120                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9121                 goto err_init_lan_hmc;
9122         }
9123
9124         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9125         if (err) {
9126                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9127                 err = -ENOENT;
9128                 goto err_configure_lan_hmc;
9129         }
9130
9131         i40e_get_mac_addr(hw, hw->mac.addr);
9132         if (!is_valid_ether_addr(hw->mac.addr)) {
9133                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9134                 err = -EIO;
9135                 goto err_mac_addr;
9136         }
9137         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9138         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9139         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9140         if (is_valid_ether_addr(hw->mac.port_addr))
9141                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9142 #ifdef I40E_FCOE
9143         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9144         if (err)
9145                 dev_info(&pdev->dev,
9146                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9147         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9148                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9149                          hw->mac.san_addr);
9150                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9151         }
9152         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9153 #endif /* I40E_FCOE */
9154
9155         pci_set_drvdata(pdev, pf);
9156         pci_save_state(pdev);
9157 #ifdef CONFIG_I40E_DCB
9158         err = i40e_init_pf_dcb(pf);
9159         if (err) {
9160                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
9161                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9162                 /* Continue without DCB enabled */
9163         }
9164 #endif /* CONFIG_I40E_DCB */
9165
9166         /* set up periodic task facility */
9167         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9168         pf->service_timer_period = HZ;
9169
9170         INIT_WORK(&pf->service_task, i40e_service_task);
9171         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9172         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9173         pf->link_check_timeout = jiffies;
9174
9175         /* WoL defaults to disabled */
9176         pf->wol_en = false;
9177         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9178
9179         /* set up the main switch operations */
9180         i40e_determine_queue_usage(pf);
9181         i40e_init_interrupt_scheme(pf);
9182
9183         /* The number of VSIs reported by the FW is the minimum guaranteed
9184          * to us; HW supports far more and we share the remaining pool with
9185          * the other PFs. We allocate space for more than the guarantee with
9186          * the understanding that we might not get them all later.
9187          */
9188         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9189                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9190         else
9191                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9192
9193         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9194         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9195         pf->vsi = kzalloc(len, GFP_KERNEL);
9196         if (!pf->vsi) {
9197                 err = -ENOMEM;
9198                 goto err_switch_setup;
9199         }
9200
9201         err = i40e_setup_pf_switch(pf, false);
9202         if (err) {
9203                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9204                 goto err_vsis;
9205         }
9206         /* if FDIR VSI was set up, start it now */
9207         for (i = 0; i < pf->num_alloc_vsi; i++) {
9208                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9209                         i40e_vsi_open(pf->vsi[i]);
9210                         break;
9211                 }
9212         }
9213
9214         /* driver is only interested in link up/down and module qualification
9215          * reports from firmware
9216          */
9217         err = i40e_aq_set_phy_int_mask(&pf->hw,
9218                                        I40E_AQ_EVENT_LINK_UPDOWN |
9219                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9220         if (err)
9221                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9222
9223         msleep(75);
9224         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9225         if (err) {
9226                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9227                          pf->hw.aq.asq_last_status);
9228         }
9229
9230         /* The main driver is (mostly) up and happy. We need to set this state
9231          * before setting up the misc vector or we get a race and the vector
9232          * ends up disabled forever.
9233          */
9234         clear_bit(__I40E_DOWN, &pf->state);
9235
9236         /* In case of MSIX we are going to setup the misc vector right here
9237          * to handle admin queue events etc. In case of legacy and MSI
9238          * the misc functionality and queue processing is combined in
9239          * the same vector and that gets setup at open.
9240          */
9241         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9242                 err = i40e_setup_misc_vector(pf);
9243                 if (err) {
9244                         dev_info(&pdev->dev,
9245                                  "setup of misc vector failed: %d\n", err);
9246                         goto err_vsis;
9247                 }
9248         }
9249
9250 #ifdef CONFIG_PCI_IOV
9251         /* prep for VF support */
9252         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9253             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9254             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9255                 u32 val;
9256
9257                 /* disable link interrupts for VFs */
9258                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9259                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9260                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9261                 i40e_flush(hw);
9262
9263                 if (pci_num_vf(pdev)) {
9264                         dev_info(&pdev->dev,
9265                                  "Active VFs found, allocating resources.\n");
9266                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9267                         if (err)
9268                                 dev_info(&pdev->dev,
9269                                          "Error %d allocating resources for existing VFs\n",
9270                                          err);
9271                 }
9272         }
9273 #endif /* CONFIG_PCI_IOV */
9274
9275         pfs_found++;
9276
9277         i40e_dbg_pf_init(pf);
9278
9279         /* tell the firmware that we're starting */
9280         i40e_send_version(pf);
9281
9282         /* since everything's happy, start the service_task timer */
9283         mod_timer(&pf->service_timer,
9284                   round_jiffies(jiffies + pf->service_timer_period));
9285
9286 #ifdef I40E_FCOE
9287         /* create FCoE interface */
9288         i40e_fcoe_vsi_setup(pf);
9289
9290 #endif
9291         /* Get the negotiated link width and speed from PCI config space */
9292         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9293
9294         i40e_set_pci_config_data(hw, link_status);
9295
9296         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9297                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9298                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9299                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9300                  "Unknown"),
9301                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9302                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9303                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9304                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9305                  "Unknown"));
9306
9307         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9308             hw->bus.speed < i40e_bus_speed_8000) {
9309                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9310                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9311         }
9312
9313         /* print a string summarizing features */
9314         i40e_print_features(pf);
9315
9316         return 0;
9317
9318         /* Unwind what we've done if something failed in the setup */
9319 err_vsis:
9320         set_bit(__I40E_DOWN, &pf->state);
9321         i40e_clear_interrupt_scheme(pf);
9322         kfree(pf->vsi);
9323 err_switch_setup:
9324         i40e_reset_interrupt_capability(pf);
9325         del_timer_sync(&pf->service_timer);
9326 err_mac_addr:
9327 err_configure_lan_hmc:
9328         (void)i40e_shutdown_lan_hmc(hw);
9329 err_init_lan_hmc:
9330         kfree(pf->qp_pile);
9331         kfree(pf->irq_pile);
9332 err_sw_init:
9333 err_adminq_setup:
9334         (void)i40e_shutdown_adminq(hw);
9335 err_pf_reset:
9336         iounmap(hw->hw_addr);
9337 err_ioremap:
9338         kfree(pf);
9339 err_pf_alloc:
9340         pci_disable_pcie_error_reporting(pdev);
9341         pci_release_selected_regions(pdev,
9342                                      pci_select_bars(pdev, IORESOURCE_MEM));
9343 err_pci_reg:
9344 err_dma:
9345         pci_disable_device(pdev);
9346         return err;
9347 }
9348
9349 /**
9350  * i40e_remove - Device removal routine
9351  * @pdev: PCI device information struct
9352  *
9353  * i40e_remove is called by the PCI subsystem to alert the driver
9354  * that is should release a PCI device.  This could be caused by a
9355  * Hot-Plug event, or because the driver is going to be removed from
9356  * memory.
9357  **/
9358 static void i40e_remove(struct pci_dev *pdev)
9359 {
9360         struct i40e_pf *pf = pci_get_drvdata(pdev);
9361         i40e_status ret_code;
9362         int i;
9363
9364         i40e_dbg_pf_exit(pf);
9365
9366         i40e_ptp_stop(pf);
9367
9368         /* no more scheduling of any task */
9369         set_bit(__I40E_DOWN, &pf->state);
9370         del_timer_sync(&pf->service_timer);
9371         cancel_work_sync(&pf->service_task);
9372
9373         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9374                 i40e_free_vfs(pf);
9375                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9376         }
9377
9378         i40e_fdir_teardown(pf);
9379
9380         /* If there is a switch structure or any orphans, remove them.
9381          * This will leave only the PF's VSI remaining.
9382          */
9383         for (i = 0; i < I40E_MAX_VEB; i++) {
9384                 if (!pf->veb[i])
9385                         continue;
9386
9387                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9388                     pf->veb[i]->uplink_seid == 0)
9389                         i40e_switch_branch_release(pf->veb[i]);
9390         }
9391
9392         /* Now we can shutdown the PF's VSI, just before we kill
9393          * adminq and hmc.
9394          */
9395         if (pf->vsi[pf->lan_vsi])
9396                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9397
9398         i40e_stop_misc_vector(pf);
9399         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9400                 synchronize_irq(pf->msix_entries[0].vector);
9401                 free_irq(pf->msix_entries[0].vector, pf);
9402         }
9403
9404         /* shutdown and destroy the HMC */
9405         if (pf->hw.hmc.hmc_obj) {
9406                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9407                 if (ret_code)
9408                         dev_warn(&pdev->dev,
9409                                  "Failed to destroy the HMC resources: %d\n",
9410                                  ret_code);
9411         }
9412
9413         /* shutdown the adminq */
9414         ret_code = i40e_shutdown_adminq(&pf->hw);
9415         if (ret_code)
9416                 dev_warn(&pdev->dev,
9417                          "Failed to destroy the Admin Queue resources: %d\n",
9418                          ret_code);
9419
9420         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9421         i40e_clear_interrupt_scheme(pf);
9422         for (i = 0; i < pf->num_alloc_vsi; i++) {
9423                 if (pf->vsi[i]) {
9424                         i40e_vsi_clear_rings(pf->vsi[i]);
9425                         i40e_vsi_clear(pf->vsi[i]);
9426                         pf->vsi[i] = NULL;
9427                 }
9428         }
9429
9430         for (i = 0; i < I40E_MAX_VEB; i++) {
9431                 kfree(pf->veb[i]);
9432                 pf->veb[i] = NULL;
9433         }
9434
9435         kfree(pf->qp_pile);
9436         kfree(pf->irq_pile);
9437         kfree(pf->vsi);
9438
9439         iounmap(pf->hw.hw_addr);
9440         kfree(pf);
9441         pci_release_selected_regions(pdev,
9442                                      pci_select_bars(pdev, IORESOURCE_MEM));
9443
9444         pci_disable_pcie_error_reporting(pdev);
9445         pci_disable_device(pdev);
9446 }
9447
9448 /**
9449  * i40e_pci_error_detected - warning that something funky happened in PCI land
9450  * @pdev: PCI device information struct
9451  *
9452  * Called to warn that something happened and the error handling steps
9453  * are in progress.  Allows the driver to quiesce things, be ready for
9454  * remediation.
9455  **/
9456 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9457                                                 enum pci_channel_state error)
9458 {
9459         struct i40e_pf *pf = pci_get_drvdata(pdev);
9460
9461         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9462
9463         /* shutdown all operations */
9464         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9465                 rtnl_lock();
9466                 i40e_prep_for_reset(pf);
9467                 rtnl_unlock();
9468         }
9469
9470         /* Request a slot reset */
9471         return PCI_ERS_RESULT_NEED_RESET;
9472 }
9473
9474 /**
9475  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9476  * @pdev: PCI device information struct
9477  *
9478  * Called to find if the driver can work with the device now that
9479  * the pci slot has been reset.  If a basic connection seems good
9480  * (registers are readable and have sane content) then return a
9481  * happy little PCI_ERS_RESULT_xxx.
9482  **/
9483 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9484 {
9485         struct i40e_pf *pf = pci_get_drvdata(pdev);
9486         pci_ers_result_t result;
9487         int err;
9488         u32 reg;
9489
9490         dev_info(&pdev->dev, "%s\n", __func__);
9491         if (pci_enable_device_mem(pdev)) {
9492                 dev_info(&pdev->dev,
9493                          "Cannot re-enable PCI device after reset.\n");
9494                 result = PCI_ERS_RESULT_DISCONNECT;
9495         } else {
9496                 pci_set_master(pdev);
9497                 pci_restore_state(pdev);
9498                 pci_save_state(pdev);
9499                 pci_wake_from_d3(pdev, false);
9500
9501                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9502                 if (reg == 0)
9503                         result = PCI_ERS_RESULT_RECOVERED;
9504                 else
9505                         result = PCI_ERS_RESULT_DISCONNECT;
9506         }
9507
9508         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9509         if (err) {
9510                 dev_info(&pdev->dev,
9511                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9512                          err);
9513                 /* non-fatal, continue */
9514         }
9515
9516         return result;
9517 }
9518
9519 /**
9520  * i40e_pci_error_resume - restart operations after PCI error recovery
9521  * @pdev: PCI device information struct
9522  *
9523  * Called to allow the driver to bring things back up after PCI error
9524  * and/or reset recovery has finished.
9525  **/
9526 static void i40e_pci_error_resume(struct pci_dev *pdev)
9527 {
9528         struct i40e_pf *pf = pci_get_drvdata(pdev);
9529
9530         dev_info(&pdev->dev, "%s\n", __func__);
9531         if (test_bit(__I40E_SUSPENDED, &pf->state))
9532                 return;
9533
9534         rtnl_lock();
9535         i40e_handle_reset_warning(pf);
9536         rtnl_lock();
9537 }
9538
9539 /**
9540  * i40e_shutdown - PCI callback for shutting down
9541  * @pdev: PCI device information struct
9542  **/
9543 static void i40e_shutdown(struct pci_dev *pdev)
9544 {
9545         struct i40e_pf *pf = pci_get_drvdata(pdev);
9546         struct i40e_hw *hw = &pf->hw;
9547
9548         set_bit(__I40E_SUSPENDED, &pf->state);
9549         set_bit(__I40E_DOWN, &pf->state);
9550         rtnl_lock();
9551         i40e_prep_for_reset(pf);
9552         rtnl_unlock();
9553
9554         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9555         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9556
9557         if (system_state == SYSTEM_POWER_OFF) {
9558                 pci_wake_from_d3(pdev, pf->wol_en);
9559                 pci_set_power_state(pdev, PCI_D3hot);
9560         }
9561 }
9562
9563 #ifdef CONFIG_PM
9564 /**
9565  * i40e_suspend - PCI callback for moving to D3
9566  * @pdev: PCI device information struct
9567  **/
9568 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9569 {
9570         struct i40e_pf *pf = pci_get_drvdata(pdev);
9571         struct i40e_hw *hw = &pf->hw;
9572
9573         set_bit(__I40E_SUSPENDED, &pf->state);
9574         set_bit(__I40E_DOWN, &pf->state);
9575         rtnl_lock();
9576         i40e_prep_for_reset(pf);
9577         rtnl_unlock();
9578
9579         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9580         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9581
9582         pci_wake_from_d3(pdev, pf->wol_en);
9583         pci_set_power_state(pdev, PCI_D3hot);
9584
9585         return 0;
9586 }
9587
9588 /**
9589  * i40e_resume - PCI callback for waking up from D3
9590  * @pdev: PCI device information struct
9591  **/
9592 static int i40e_resume(struct pci_dev *pdev)
9593 {
9594         struct i40e_pf *pf = pci_get_drvdata(pdev);
9595         u32 err;
9596
9597         pci_set_power_state(pdev, PCI_D0);
9598         pci_restore_state(pdev);
9599         /* pci_restore_state() clears dev->state_saves, so
9600          * call pci_save_state() again to restore it.
9601          */
9602         pci_save_state(pdev);
9603
9604         err = pci_enable_device_mem(pdev);
9605         if (err) {
9606                 dev_err(&pdev->dev,
9607                         "%s: Cannot enable PCI device from suspend\n",
9608                         __func__);
9609                 return err;
9610         }
9611         pci_set_master(pdev);
9612
9613         /* no wakeup events while running */
9614         pci_wake_from_d3(pdev, false);
9615
9616         /* handling the reset will rebuild the device state */
9617         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9618                 clear_bit(__I40E_DOWN, &pf->state);
9619                 rtnl_lock();
9620                 i40e_reset_and_rebuild(pf, false);
9621                 rtnl_unlock();
9622         }
9623
9624         return 0;
9625 }
9626
9627 #endif
9628 static const struct pci_error_handlers i40e_err_handler = {
9629         .error_detected = i40e_pci_error_detected,
9630         .slot_reset = i40e_pci_error_slot_reset,
9631         .resume = i40e_pci_error_resume,
9632 };
9633
9634 static struct pci_driver i40e_driver = {
9635         .name     = i40e_driver_name,
9636         .id_table = i40e_pci_tbl,
9637         .probe    = i40e_probe,
9638         .remove   = i40e_remove,
9639 #ifdef CONFIG_PM
9640         .suspend  = i40e_suspend,
9641         .resume   = i40e_resume,
9642 #endif
9643         .shutdown = i40e_shutdown,
9644         .err_handler = &i40e_err_handler,
9645         .sriov_configure = i40e_pci_sriov_configure,
9646 };
9647
9648 /**
9649  * i40e_init_module - Driver registration routine
9650  *
9651  * i40e_init_module is the first routine called when the driver is
9652  * loaded. All it does is register with the PCI subsystem.
9653  **/
9654 static int __init i40e_init_module(void)
9655 {
9656         pr_info("%s: %s - version %s\n", i40e_driver_name,
9657                 i40e_driver_string, i40e_driver_version_str);
9658         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9659         i40e_dbg_init();
9660         return pci_register_driver(&i40e_driver);
9661 }
9662 module_init(i40e_init_module);
9663
9664 /**
9665  * i40e_exit_module - Driver exit cleanup routine
9666  *
9667  * i40e_exit_module is called just before the driver is removed
9668  * from memory.
9669  **/
9670 static void __exit i40e_exit_module(void)
9671 {
9672         pci_unregister_driver(&i40e_driver);
9673         i40e_dbg_exit();
9674 }
9675 module_exit(i40e_exit_module);