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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  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         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  84         /* required last entry */
  85         {0, }
  86 };
  87 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  88
  89 #define I40E_MAX_VF_COUNT 128
  90 static int debug = -1;
  91 module_param(debug, int, 0);
  92 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  93
  94 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  95 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  96 MODULE_LICENSE("GPL");
  97 MODULE_VERSION(DRV_VERSION);
  98
  99 /**
 100  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 101  * @hw:   pointer to the HW structure
 102  * @mem:  ptr to mem struct to fill out
 103  * @size: size of memory requested
 104  * @alignment: what to align the allocation to
 105  **/
 106 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 107                             u64 size, u32 alignment)
 108 {
 109         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 110
 111         mem->size = ALIGN(size, alignment);
 112         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 113                                       &mem->pa, GFP_KERNEL);
 114         if (!mem->va)
 115                 return -ENOMEM;
 116
 117         return 0;
 118 }
 119
 120 /**
 121  * i40e_free_dma_mem_d - OS specific memory free for shared code
 122  * @hw:   pointer to the HW structure
 123  * @mem:  ptr to mem struct to free
 124  **/
 125 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 126 {
 127         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 128
 129         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 130         mem->va = NULL;
 131         mem->pa = 0;
 132         mem->size = 0;
 133
 134         return 0;
 135 }
 136
 137 /**
 138  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 139  * @hw:   pointer to the HW structure
 140  * @mem:  ptr to mem struct to fill out
 141  * @size: size of memory requested
 142  **/
 143 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 144                              u32 size)
 145 {
 146         mem->size = size;
 147         mem->va = kzalloc(size, GFP_KERNEL);
 148
 149         if (!mem->va)
 150                 return -ENOMEM;
 151
 152         return 0;
 153 }
 154
 155 /**
 156  * i40e_free_virt_mem_d - OS specific memory free for shared code
 157  * @hw:   pointer to the HW structure
 158  * @mem:  ptr to mem struct to free
 159  **/
 160 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 161 {
 162         /* it's ok to kfree a NULL pointer */
 163         kfree(mem->va);
 164         mem->va = NULL;
 165         mem->size = 0;
 166
 167         return 0;
 168 }
 169
 170 /**
 171  * i40e_get_lump - find a lump of free generic resource
 172  * @pf: board private structure
 173  * @pile: the pile of resource to search
 174  * @needed: the number of items needed
 175  * @id: an owner id to stick on the items assigned
 176  *
 177  * Returns the base item index of the lump, or negative for error
 178  *
 179  * The search_hint trick and lack of advanced fit-finding only work
 180  * because we're highly likely to have all the same size lump requests.
 181  * Linear search time and any fragmentation should be minimal.
 182  **/
 183 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 184                          u16 needed, u16 id)
 185 {
 186         int ret = -ENOMEM;
 187         int i, j;
 188
 189         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 190                 dev_info(&pf->pdev->dev,
 191                          "param err: pile=%p needed=%d id=0x%04x\n",
 192                          pile, needed, id);
 193                 return -EINVAL;
 194         }
 195
 196         /* start the linear search with an imperfect hint */
 197         i = pile->search_hint;
 198         while (i < pile->num_entries) {
 199                 /* skip already allocated entries */
 200                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 201                         i++;
 202                         continue;
 203                 }
 204
 205                 /* do we have enough in this lump? */
 206                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 207                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 208                                 break;
 209                 }
 210
 211                 if (j == needed) {
 212                         /* there was enough, so assign it to the requestor */
 213                         for (j = 0; j < needed; j++)
 214                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 215                         ret = i;
 216                         pile->search_hint = i + j;
 217                         break;
 218                 } else {
 219                         /* not enough, so skip over it and continue looking */
 220                         i += j;
 221                 }
 222         }
 223
 224         return ret;
 225 }
 226
 227 /**
 228  * i40e_put_lump - return a lump of generic resource
 229  * @pile: the pile of resource to search
 230  * @index: the base item index
 231  * @id: the owner id of the items assigned
 232  *
 233  * Returns the count of items in the lump
 234  **/
 235 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 236 {
 237         int valid_id = (id | I40E_PILE_VALID_BIT);
 238         int count = 0;
 239         int i;
 240
 241         if (!pile || index >= pile->num_entries)
 242                 return -EINVAL;
 243
 244         for (i = index;
 245              i < pile->num_entries && pile->list[i] == valid_id;
 246              i++) {
 247                 pile->list[i] = 0;
 248                 count++;
 249         }
 250
 251         if (count && index < pile->search_hint)
 252                 pile->search_hint = index;
 253
 254         return count;
 255 }
 256
 257 /**
 258  * i40e_find_vsi_from_id - searches for the vsi with the given id
 259  * @pf - the pf structure to search for the vsi
 260  * @id - id of the vsi it is searching for
 261  **/
 262 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 263 {
 264         int i;
 265
 266         for (i = 0; i < pf->num_alloc_vsi; i++)
 267                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 268                         return pf->vsi[i];
 269
 270         return NULL;
 271 }
 272
 273 /**
 274  * i40e_service_event_schedule - Schedule the service task to wake up
 275  * @pf: board private structure
 276  *
 277  * If not already scheduled, this puts the task into the work queue
 278  **/
 279 static void i40e_service_event_schedule(struct i40e_pf *pf)
 280 {
 281         if (!test_bit(__I40E_DOWN, &pf->state) &&
 282             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 283             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 284                 schedule_work(&pf->service_task);
 285 }
 286
 287 /**
 288  * i40e_tx_timeout - Respond to a Tx Hang
 289  * @netdev: network interface device structure
 290  *
 291  * If any port has noticed a Tx timeout, it is likely that the whole
 292  * device is munged, not just the one netdev port, so go for the full
 293  * reset.
 294  **/
 295 #ifdef I40E_FCOE
 296 void i40e_tx_timeout(struct net_device *netdev)
 297 #else
 298 static void i40e_tx_timeout(struct net_device *netdev)
 299 #endif
 300 {
 301         struct i40e_netdev_priv *np = netdev_priv(netdev);
 302         struct i40e_vsi *vsi = np->vsi;
 303         struct i40e_pf *pf = vsi->back;
 304         struct i40e_ring *tx_ring = NULL;
 305         unsigned int i, hung_queue = 0;
 306         u32 head, val;
 307
 308         pf->tx_timeout_count++;
 309
 310         /* find the stopped queue the same way the stack does */
 311         for (i = 0; i < netdev->num_tx_queues; i++) {
 312                 struct netdev_queue *q;
 313                 unsigned long trans_start;
 314
 315                 q = netdev_get_tx_queue(netdev, i);
 316                 trans_start = q->trans_start ? : netdev->trans_start;
 317                 if (netif_xmit_stopped(q) &&
 318                     time_after(jiffies,
 319                                (trans_start + netdev->watchdog_timeo))) {
 320                         hung_queue = i;
 321                         break;
 322                 }
 323         }
 324
 325         if (i == netdev->num_tx_queues) {
 326                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 327         } else {
 328                 /* now that we have an index, find the tx_ring struct */
 329                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 330                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 331                                 if (hung_queue ==
 332                                     vsi->tx_rings[i]->queue_index) {
 333                                         tx_ring = vsi->tx_rings[i];
 334                                         break;
 335                                 }
 336                         }
 337                 }
 338         }
 339
 340         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 341                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 342         else if (time_before(jiffies,
 343                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 344                 return;   /* don't do any new action before the next timeout */
 345
 346         if (tx_ring) {
 347                 head = i40e_get_head(tx_ring);
 348                 /* Read interrupt register */
 349                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 350                         val = rd32(&pf->hw,
 351                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 352                                                 tx_ring->vsi->base_vector - 1));
 353                 else
 354                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 355
 356                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 357                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 358                             head, tx_ring->next_to_use,
 359                             readl(tx_ring->tail), val);
 360         }
 361
 362         pf->tx_timeout_last_recovery = jiffies;
 363         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 364                     pf->tx_timeout_recovery_level, hung_queue);
 365
 366         switch (pf->tx_timeout_recovery_level) {
 367         case 1:
 368                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 369                 break;
 370         case 2:
 371                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 372                 break;
 373         case 3:
 374                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 375                 break;
 376         default:
 377                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 378                 break;
 379         }
 380
 381         i40e_service_event_schedule(pf);
 382         pf->tx_timeout_recovery_level++;
 383 }
 384
 385 /**
 386  * i40e_release_rx_desc - Store the new tail and head values
 387  * @rx_ring: ring to bump
 388  * @val: new head index
 389  **/
 390 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 391 {
 392         rx_ring->next_to_use = val;
 393
 394         /* Force memory writes to complete before letting h/w
 395          * know there are new descriptors to fetch.  (Only
 396          * applicable for weak-ordered memory model archs,
 397          * such as IA-64).
 398          */
 399         wmb();
 400         writel(val, rx_ring->tail);
 401 }
 402
 403 /**
 404  * i40e_get_vsi_stats_struct - Get System Network Statistics
 405  * @vsi: the VSI we care about
 406  *
 407  * Returns the address of the device statistics structure.
 408  * The statistics are actually updated from the service task.
 409  **/
 410 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 411 {
 412         return &vsi->net_stats;
 413 }
 414
 415 /**
 416  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 417  * @netdev: network interface device structure
 418  *
 419  * Returns the address of the device statistics structure.
 420  * The statistics are actually updated from the service task.
 421  **/
 422 #ifdef I40E_FCOE
 423 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 424                                              struct net_device *netdev,
 425                                              struct rtnl_link_stats64 *stats)
 426 #else
 427 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 428                                              struct net_device *netdev,
 429                                              struct rtnl_link_stats64 *stats)
 430 #endif
 431 {
 432         struct i40e_netdev_priv *np = netdev_priv(netdev);
 433         struct i40e_ring *tx_ring, *rx_ring;
 434         struct i40e_vsi *vsi = np->vsi;
 435         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 436         int i;
 437
 438         if (test_bit(__I40E_DOWN, &vsi->state))
 439                 return stats;
 440
 441         if (!vsi->tx_rings)
 442                 return stats;
 443
 444         rcu_read_lock();
 445         for (i = 0; i < vsi->num_queue_pairs; i++) {
 446                 u64 bytes, packets;
 447                 unsigned int start;
 448
 449                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 450                 if (!tx_ring)
 451                         continue;
 452
 453                 do {
 454                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 455                         packets = tx_ring->stats.packets;
 456                         bytes   = tx_ring->stats.bytes;
 457                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 458
 459                 stats->tx_packets += packets;
 460                 stats->tx_bytes   += bytes;
 461                 rx_ring = &tx_ring[1];
 462
 463                 do {
 464                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 465                         packets = rx_ring->stats.packets;
 466                         bytes   = rx_ring->stats.bytes;
 467                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 468
 469                 stats->rx_packets += packets;
 470                 stats->rx_bytes   += bytes;
 471         }
 472         rcu_read_unlock();
 473
 474         /* following stats updated by i40e_watchdog_subtask() */
 475         stats->multicast        = vsi_stats->multicast;
 476         stats->tx_errors        = vsi_stats->tx_errors;
 477         stats->tx_dropped       = vsi_stats->tx_dropped;
 478         stats->rx_errors        = vsi_stats->rx_errors;
 479         stats->rx_dropped       = vsi_stats->rx_dropped;
 480         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 481         stats->rx_length_errors = vsi_stats->rx_length_errors;
 482
 483         return stats;
 484 }
 485
 486 /**
 487  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 488  * @vsi: the VSI to have its stats reset
 489  **/
 490 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 491 {
 492         struct rtnl_link_stats64 *ns;
 493         int i;
 494
 495         if (!vsi)
 496                 return;
 497
 498         ns = i40e_get_vsi_stats_struct(vsi);
 499         memset(ns, 0, sizeof(*ns));
 500         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 501         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 502         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 503         if (vsi->rx_rings && vsi->rx_rings[0]) {
 504                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 505                         memset(&vsi->rx_rings[i]->stats, 0 ,
 506                                sizeof(vsi->rx_rings[i]->stats));
 507                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 508                                sizeof(vsi->rx_rings[i]->rx_stats));
 509                         memset(&vsi->tx_rings[i]->stats, 0 ,
 510                                sizeof(vsi->tx_rings[i]->stats));
 511                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 512                                sizeof(vsi->tx_rings[i]->tx_stats));
 513                 }
 514         }
 515         vsi->stat_offsets_loaded = false;
 516 }
 517
 518 /**
 519  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 520  * @pf: the PF to be reset
 521  **/
 522 void i40e_pf_reset_stats(struct i40e_pf *pf)
 523 {
 524         int i;
 525
 526         memset(&pf->stats, 0, sizeof(pf->stats));
 527         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 528         pf->stat_offsets_loaded = false;
 529
 530         for (i = 0; i < I40E_MAX_VEB; i++) {
 531                 if (pf->veb[i]) {
 532                         memset(&pf->veb[i]->stats, 0,
 533                                sizeof(pf->veb[i]->stats));
 534                         memset(&pf->veb[i]->stats_offsets, 0,
 535                                sizeof(pf->veb[i]->stats_offsets));
 536                         pf->veb[i]->stat_offsets_loaded = false;
 537                 }
 538         }
 539 }
 540
 541 /**
 542  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 543  * @hw: ptr to the hardware info
 544  * @hireg: the high 32 bit reg to read
 545  * @loreg: the low 32 bit reg to read
 546  * @offset_loaded: has the initial offset been loaded yet
 547  * @offset: ptr to current offset value
 548  * @stat: ptr to the stat
 549  *
 550  * Since the device stats are not reset at PFReset, they likely will not
 551  * be zeroed when the driver starts.  We'll save the first values read
 552  * and use them as offsets to be subtracted from the raw values in order
 553  * to report stats that count from zero.  In the process, we also manage
 554  * the potential roll-over.
 555  **/
 556 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 557                                bool offset_loaded, u64 *offset, u64 *stat)
 558 {
 559         u64 new_data;
 560
 561         if (hw->device_id == I40E_DEV_ID_QEMU) {
 562                 new_data = rd32(hw, loreg);
 563                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 564         } else {
 565                 new_data = rd64(hw, loreg);
 566         }
 567         if (!offset_loaded)
 568                 *offset = new_data;
 569         if (likely(new_data >= *offset))
 570                 *stat = new_data - *offset;
 571         else
 572                 *stat = (new_data + BIT_ULL(48)) - *offset;
 573         *stat &= 0xFFFFFFFFFFFFULL;
 574 }
 575
 576 /**
 577  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 578  * @hw: ptr to the hardware info
 579  * @reg: the hw reg to read
 580  * @offset_loaded: has the initial offset been loaded yet
 581  * @offset: ptr to current offset value
 582  * @stat: ptr to the stat
 583  **/
 584 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 585                                bool offset_loaded, u64 *offset, u64 *stat)
 586 {
 587         u32 new_data;
 588
 589         new_data = rd32(hw, reg);
 590         if (!offset_loaded)
 591                 *offset = new_data;
 592         if (likely(new_data >= *offset))
 593                 *stat = (u32)(new_data - *offset);
 594         else
 595                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 596 }
 597
 598 /**
 599  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 600  * @vsi: the VSI to be updated
 601  **/
 602 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 603 {
 604         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 605         struct i40e_pf *pf = vsi->back;
 606         struct i40e_hw *hw = &pf->hw;
 607         struct i40e_eth_stats *oes;
 608         struct i40e_eth_stats *es;     /* device's eth stats */
 609
 610         es = &vsi->eth_stats;
 611         oes = &vsi->eth_stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 615                            vsi->stat_offsets_loaded,
 616                            &oes->tx_errors, &es->tx_errors);
 617         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->rx_discards, &es->rx_discards);
 620         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 623         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->tx_errors, &es->tx_errors);
 626
 627         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 628                            I40E_GLV_GORCL(stat_idx),
 629                            vsi->stat_offsets_loaded,
 630                            &oes->rx_bytes, &es->rx_bytes);
 631         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 632                            I40E_GLV_UPRCL(stat_idx),
 633                            vsi->stat_offsets_loaded,
 634                            &oes->rx_unicast, &es->rx_unicast);
 635         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 636                            I40E_GLV_MPRCL(stat_idx),
 637                            vsi->stat_offsets_loaded,
 638                            &oes->rx_multicast, &es->rx_multicast);
 639         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 640                            I40E_GLV_BPRCL(stat_idx),
 641                            vsi->stat_offsets_loaded,
 642                            &oes->rx_broadcast, &es->rx_broadcast);
 643
 644         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 645                            I40E_GLV_GOTCL(stat_idx),
 646                            vsi->stat_offsets_loaded,
 647                            &oes->tx_bytes, &es->tx_bytes);
 648         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 649                            I40E_GLV_UPTCL(stat_idx),
 650                            vsi->stat_offsets_loaded,
 651                            &oes->tx_unicast, &es->tx_unicast);
 652         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 653                            I40E_GLV_MPTCL(stat_idx),
 654                            vsi->stat_offsets_loaded,
 655                            &oes->tx_multicast, &es->tx_multicast);
 656         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 657                            I40E_GLV_BPTCL(stat_idx),
 658                            vsi->stat_offsets_loaded,
 659                            &oes->tx_broadcast, &es->tx_broadcast);
 660         vsi->stat_offsets_loaded = true;
 661 }
 662
 663 /**
 664  * i40e_update_veb_stats - Update Switch component statistics
 665  * @veb: the VEB being updated
 666  **/
 667 static void i40e_update_veb_stats(struct i40e_veb *veb)
 668 {
 669         struct i40e_pf *pf = veb->pf;
 670         struct i40e_hw *hw = &pf->hw;
 671         struct i40e_eth_stats *oes;
 672         struct i40e_eth_stats *es;     /* device's eth stats */
 673         struct i40e_veb_tc_stats *veb_oes;
 674         struct i40e_veb_tc_stats *veb_es;
 675         int i, idx = 0;
 676
 677         idx = veb->stats_idx;
 678         es = &veb->stats;
 679         oes = &veb->stats_offsets;
 680         veb_es = &veb->tc_stats;
 681         veb_oes = &veb->tc_stats_offsets;
 682
 683         /* Gather up the stats that the hw collects */
 684         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 685                            veb->stat_offsets_loaded,
 686                            &oes->tx_discards, &es->tx_discards);
 687         if (hw->revision_id > 0)
 688                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 689                                    veb->stat_offsets_loaded,
 690                                    &oes->rx_unknown_protocol,
 691                                    &es->rx_unknown_protocol);
 692         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->rx_bytes, &es->rx_bytes);
 695         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_unicast, &es->rx_unicast);
 698         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_multicast, &es->rx_multicast);
 701         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->rx_broadcast, &es->rx_broadcast);
 704
 705         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->tx_bytes, &es->tx_bytes);
 708         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_unicast, &es->tx_unicast);
 711         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_multicast, &es->tx_multicast);
 714         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->tx_broadcast, &es->tx_broadcast);
 717         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 718                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 719                                    I40E_GLVEBTC_RPCL(i, idx),
 720                                    veb->stat_offsets_loaded,
 721                                    &veb_oes->tc_rx_packets[i],
 722                                    &veb_es->tc_rx_packets[i]);
 723                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 724                                    I40E_GLVEBTC_RBCL(i, idx),
 725                                    veb->stat_offsets_loaded,
 726                                    &veb_oes->tc_rx_bytes[i],
 727                                    &veb_es->tc_rx_bytes[i]);
 728                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 729                                    I40E_GLVEBTC_TPCL(i, idx),
 730                                    veb->stat_offsets_loaded,
 731                                    &veb_oes->tc_tx_packets[i],
 732                                    &veb_es->tc_tx_packets[i]);
 733                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 734                                    I40E_GLVEBTC_TBCL(i, idx),
 735                                    veb->stat_offsets_loaded,
 736                                    &veb_oes->tc_tx_bytes[i],
 737                                    &veb_es->tc_tx_bytes[i]);
 738         }
 739         veb->stat_offsets_loaded = true;
 740 }
 741
 742 #ifdef I40E_FCOE
 743 /**
 744  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 745  * @vsi: the VSI that is capable of doing FCoE
 746  **/
 747 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 748 {
 749         struct i40e_pf *pf = vsi->back;
 750         struct i40e_hw *hw = &pf->hw;
 751         struct i40e_fcoe_stats *ofs;
 752         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 753         int idx;
 754
 755         if (vsi->type != I40E_VSI_FCOE)
 756                 return;
 757
 758         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 759         fs = &vsi->fcoe_stats;
 760         ofs = &vsi->fcoe_stats_offsets;
 761
 762         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 763                            vsi->fcoe_stat_offsets_loaded,
 764                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 765         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 768         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 771         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 774         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 777         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 780         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 783         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 786
 787         vsi->fcoe_stat_offsets_loaded = true;
 788 }
 789
 790 #endif
 791 /**
 792  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 793  * @pf: the corresponding PF
 794  *
 795  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 796  **/
 797 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 798 {
 799         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 800         struct i40e_hw_port_stats *nsd = &pf->stats;
 801         struct i40e_hw *hw = &pf->hw;
 802         u64 xoff = 0;
 803
 804         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 805             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 806                 return;
 807
 808         xoff = nsd->link_xoff_rx;
 809         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 810                            pf->stat_offsets_loaded,
 811                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 812
 813         /* No new LFC xoff rx */
 814         if (!(nsd->link_xoff_rx - xoff))
 815                 return;
 816
 817 }
 818
 819 /**
 820  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 821  * @pf: the corresponding PF
 822  *
 823  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 824  **/
 825 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 826 {
 827         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 828         struct i40e_hw_port_stats *nsd = &pf->stats;
 829         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 830         struct i40e_dcbx_config *dcb_cfg;
 831         struct i40e_hw *hw = &pf->hw;
 832         u16 i;
 833         u8 tc;
 834
 835         dcb_cfg = &hw->local_dcbx_config;
 836
 837         /* Collect Link XOFF stats when PFC is disabled */
 838         if (!dcb_cfg->pfc.pfcenable) {
 839                 i40e_update_link_xoff_rx(pf);
 840                 return;
 841         }
 842
 843         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 844                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 845                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 846                                    pf->stat_offsets_loaded,
 847                                    &osd->priority_xoff_rx[i],
 848                                    &nsd->priority_xoff_rx[i]);
 849
 850                 /* No new PFC xoff rx */
 851                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 852                         continue;
 853                 /* Get the TC for given priority */
 854                 tc = dcb_cfg->etscfg.prioritytable[i];
 855                 xoff[tc] = true;
 856         }
 857 }
 858
 859 /**
 860  * i40e_update_vsi_stats - Update the vsi statistics counters.
 861  * @vsi: the VSI to be updated
 862  *
 863  * There are a few instances where we store the same stat in a
 864  * couple of different structs.  This is partly because we have
 865  * the netdev stats that need to be filled out, which is slightly
 866  * different from the "eth_stats" defined by the chip and used in
 867  * VF communications.  We sort it out here.
 868  **/
 869 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 870 {
 871         struct i40e_pf *pf = vsi->back;
 872         struct rtnl_link_stats64 *ons;
 873         struct rtnl_link_stats64 *ns;   /* netdev stats */
 874         struct i40e_eth_stats *oes;
 875         struct i40e_eth_stats *es;     /* device's eth stats */
 876         u32 tx_restart, tx_busy;
 877         struct i40e_ring *p;
 878         u32 rx_page, rx_buf;
 879         u64 bytes, packets;
 880         unsigned int start;
 881         u64 rx_p, rx_b;
 882         u64 tx_p, tx_b;
 883         u16 q;
 884
 885         if (test_bit(__I40E_DOWN, &vsi->state) ||
 886             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 887                 return;
 888
 889         ns = i40e_get_vsi_stats_struct(vsi);
 890         ons = &vsi->net_stats_offsets;
 891         es = &vsi->eth_stats;
 892         oes = &vsi->eth_stats_offsets;
 893
 894         /* Gather up the netdev and vsi stats that the driver collects
 895          * on the fly during packet processing
 896          */
 897         rx_b = rx_p = 0;
 898         tx_b = tx_p = 0;
 899         tx_restart = tx_busy = 0;
 900         rx_page = 0;
 901         rx_buf = 0;
 902         rcu_read_lock();
 903         for (q = 0; q < vsi->num_queue_pairs; q++) {
 904                 /* locate Tx ring */
 905                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 906
 907                 do {
 908                         start = u64_stats_fetch_begin_irq(&p->syncp);
 909                         packets = p->stats.packets;
 910                         bytes = p->stats.bytes;
 911                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 912                 tx_b += bytes;
 913                 tx_p += packets;
 914                 tx_restart += p->tx_stats.restart_queue;
 915                 tx_busy += p->tx_stats.tx_busy;
 916
 917                 /* Rx queue is part of the same block as Tx queue */
 918                 p = &p[1];
 919                 do {
 920                         start = u64_stats_fetch_begin_irq(&p->syncp);
 921                         packets = p->stats.packets;
 922                         bytes = p->stats.bytes;
 923                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 924                 rx_b += bytes;
 925                 rx_p += packets;
 926                 rx_buf += p->rx_stats.alloc_buff_failed;
 927                 rx_page += p->rx_stats.alloc_page_failed;
 928         }
 929         rcu_read_unlock();
 930         vsi->tx_restart = tx_restart;
 931         vsi->tx_busy = tx_busy;
 932         vsi->rx_page_failed = rx_page;
 933         vsi->rx_buf_failed = rx_buf;
 934
 935         ns->rx_packets = rx_p;
 936         ns->rx_bytes = rx_b;
 937         ns->tx_packets = tx_p;
 938         ns->tx_bytes = tx_b;
 939
 940         /* update netdev stats from eth stats */
 941         i40e_update_eth_stats(vsi);
 942         ons->tx_errors = oes->tx_errors;
 943         ns->tx_errors = es->tx_errors;
 944         ons->multicast = oes->rx_multicast;
 945         ns->multicast = es->rx_multicast;
 946         ons->rx_dropped = oes->rx_discards;
 947         ns->rx_dropped = es->rx_discards;
 948         ons->tx_dropped = oes->tx_discards;
 949         ns->tx_dropped = es->tx_discards;
 950
 951         /* pull in a couple PF stats if this is the main vsi */
 952         if (vsi == pf->vsi[pf->lan_vsi]) {
 953                 ns->rx_crc_errors = pf->stats.crc_errors;
 954                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 955                 ns->rx_length_errors = pf->stats.rx_length_errors;
 956         }
 957 }
 958
 959 /**
 960  * i40e_update_pf_stats - Update the PF statistics counters.
 961  * @pf: the PF to be updated
 962  **/
 963 static void i40e_update_pf_stats(struct i40e_pf *pf)
 964 {
 965         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 966         struct i40e_hw_port_stats *nsd = &pf->stats;
 967         struct i40e_hw *hw = &pf->hw;
 968         u32 val;
 969         int i;
 970
 971         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 972                            I40E_GLPRT_GORCL(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 975         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 976                            I40E_GLPRT_GOTCL(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 979         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 980                            pf->stat_offsets_loaded,
 981                            &osd->eth.rx_discards,
 982                            &nsd->eth.rx_discards);
 983         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 984                            I40E_GLPRT_UPRCL(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->eth.rx_unicast,
 987                            &nsd->eth.rx_unicast);
 988         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 989                            I40E_GLPRT_MPRCL(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_multicast,
 992                            &nsd->eth.rx_multicast);
 993         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 994                            I40E_GLPRT_BPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_broadcast,
 997                            &nsd->eth.rx_broadcast);
 998         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 999                            I40E_GLPRT_UPTCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.tx_unicast,
1002                            &nsd->eth.tx_unicast);
1003         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1004                            I40E_GLPRT_MPTCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.tx_multicast,
1007                            &nsd->eth.tx_multicast);
1008         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1009                            I40E_GLPRT_BPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_broadcast,
1012                            &nsd->eth.tx_broadcast);
1013
1014         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->tx_dropped_link_down,
1017                            &nsd->tx_dropped_link_down);
1018
1019         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->crc_errors, &nsd->crc_errors);
1022
1023         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->illegal_bytes, &nsd->illegal_bytes);
1026
1027         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->mac_local_faults,
1030                            &nsd->mac_local_faults);
1031         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->mac_remote_faults,
1034                            &nsd->mac_remote_faults);
1035
1036         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_length_errors,
1039                            &nsd->rx_length_errors);
1040
1041         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->link_xon_rx, &nsd->link_xon_rx);
1044         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->link_xon_tx, &nsd->link_xon_tx);
1047         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1048         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1049                            pf->stat_offsets_loaded,
1050                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1051
1052         for (i = 0; i < 8; i++) {
1053                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1054                                    pf->stat_offsets_loaded,
1055                                    &osd->priority_xon_rx[i],
1056                                    &nsd->priority_xon_rx[i]);
1057                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1058                                    pf->stat_offsets_loaded,
1059                                    &osd->priority_xon_tx[i],
1060                                    &nsd->priority_xon_tx[i]);
1061                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1062                                    pf->stat_offsets_loaded,
1063                                    &osd->priority_xoff_tx[i],
1064                                    &nsd->priority_xoff_tx[i]);
1065                 i40e_stat_update32(hw,
1066                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1067                                    pf->stat_offsets_loaded,
1068                                    &osd->priority_xon_2_xoff[i],
1069                                    &nsd->priority_xon_2_xoff[i]);
1070         }
1071
1072         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1073                            I40E_GLPRT_PRC64L(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->rx_size_64, &nsd->rx_size_64);
1076         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1077                            I40E_GLPRT_PRC127L(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_size_127, &nsd->rx_size_127);
1080         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1081                            I40E_GLPRT_PRC255L(hw->port),
1082                            pf->stat_offsets_loaded,
1083                            &osd->rx_size_255, &nsd->rx_size_255);
1084         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1085                            I40E_GLPRT_PRC511L(hw->port),
1086                            pf->stat_offsets_loaded,
1087                            &osd->rx_size_511, &nsd->rx_size_511);
1088         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1089                            I40E_GLPRT_PRC1023L(hw->port),
1090                            pf->stat_offsets_loaded,
1091                            &osd->rx_size_1023, &nsd->rx_size_1023);
1092         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1093                            I40E_GLPRT_PRC1522L(hw->port),
1094                            pf->stat_offsets_loaded,
1095                            &osd->rx_size_1522, &nsd->rx_size_1522);
1096         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1097                            I40E_GLPRT_PRC9522L(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_size_big, &nsd->rx_size_big);
1100
1101         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1102                            I40E_GLPRT_PTC64L(hw->port),
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_size_64, &nsd->tx_size_64);
1105         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1106                            I40E_GLPRT_PTC127L(hw->port),
1107                            pf->stat_offsets_loaded,
1108                            &osd->tx_size_127, &nsd->tx_size_127);
1109         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1110                            I40E_GLPRT_PTC255L(hw->port),
1111                            pf->stat_offsets_loaded,
1112                            &osd->tx_size_255, &nsd->tx_size_255);
1113         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1114                            I40E_GLPRT_PTC511L(hw->port),
1115                            pf->stat_offsets_loaded,
1116                            &osd->tx_size_511, &nsd->tx_size_511);
1117         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1118                            I40E_GLPRT_PTC1023L(hw->port),
1119                            pf->stat_offsets_loaded,
1120                            &osd->tx_size_1023, &nsd->tx_size_1023);
1121         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1122                            I40E_GLPRT_PTC1522L(hw->port),
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_size_1522, &nsd->tx_size_1522);
1125         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1126                            I40E_GLPRT_PTC9522L(hw->port),
1127                            pf->stat_offsets_loaded,
1128                            &osd->tx_size_big, &nsd->tx_size_big);
1129
1130         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1131                            pf->stat_offsets_loaded,
1132                            &osd->rx_undersize, &nsd->rx_undersize);
1133         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1134                            pf->stat_offsets_loaded,
1135                            &osd->rx_fragments, &nsd->rx_fragments);
1136         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1137                            pf->stat_offsets_loaded,
1138                            &osd->rx_oversize, &nsd->rx_oversize);
1139         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1140                            pf->stat_offsets_loaded,
1141                            &osd->rx_jabber, &nsd->rx_jabber);
1142
1143         /* FDIR stats */
1144         i40e_stat_update32(hw,
1145                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1146                            pf->stat_offsets_loaded,
1147                            &osd->fd_atr_match, &nsd->fd_atr_match);
1148         i40e_stat_update32(hw,
1149                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1150                            pf->stat_offsets_loaded,
1151                            &osd->fd_sb_match, &nsd->fd_sb_match);
1152         i40e_stat_update32(hw,
1153                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1154                       pf->stat_offsets_loaded,
1155                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1156
1157         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1158         nsd->tx_lpi_status =
1159                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1160                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1161         nsd->rx_lpi_status =
1162                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1163                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1164         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1165                            pf->stat_offsets_loaded,
1166                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1167         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1168                            pf->stat_offsets_loaded,
1169                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1170
1171         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1172             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1173                 nsd->fd_sb_status = true;
1174         else
1175                 nsd->fd_sb_status = false;
1176
1177         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1178             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1179                 nsd->fd_atr_status = true;
1180         else
1181                 nsd->fd_atr_status = false;
1182
1183         pf->stat_offsets_loaded = true;
1184 }
1185
1186 /**
1187  * i40e_update_stats - Update the various statistics counters.
1188  * @vsi: the VSI to be updated
1189  *
1190  * Update the various stats for this VSI and its related entities.
1191  **/
1192 void i40e_update_stats(struct i40e_vsi *vsi)
1193 {
1194         struct i40e_pf *pf = vsi->back;
1195
1196         if (vsi == pf->vsi[pf->lan_vsi])
1197                 i40e_update_pf_stats(pf);
1198
1199         i40e_update_vsi_stats(vsi);
1200 #ifdef I40E_FCOE
1201         i40e_update_fcoe_stats(vsi);
1202 #endif
1203 }
1204
1205 /**
1206  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1207  * @vsi: the VSI to be searched
1208  * @macaddr: the MAC address
1209  * @vlan: the vlan
1210  * @is_vf: make sure its a VF filter, else doesn't matter
1211  * @is_netdev: make sure its a netdev filter, else doesn't matter
1212  *
1213  * Returns ptr to the filter object or NULL
1214  **/
1215 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1216                                                 u8 *macaddr, s16 vlan,
1217                                                 bool is_vf, bool is_netdev)
1218 {
1219         struct i40e_mac_filter *f;
1220
1221         if (!vsi || !macaddr)
1222                 return NULL;
1223
1224         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1225                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1226                     (vlan == f->vlan)    &&
1227                     (!is_vf || f->is_vf) &&
1228                     (!is_netdev || f->is_netdev))
1229                         return f;
1230         }
1231         return NULL;
1232 }
1233
1234 /**
1235  * i40e_find_mac - Find a mac addr in the macvlan filters list
1236  * @vsi: the VSI to be searched
1237  * @macaddr: the MAC address we are searching for
1238  * @is_vf: make sure its a VF filter, else doesn't matter
1239  * @is_netdev: make sure its a netdev filter, else doesn't matter
1240  *
1241  * Returns the first filter with the provided MAC address or NULL if
1242  * MAC address was not found
1243  **/
1244 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1245                                       bool is_vf, bool is_netdev)
1246 {
1247         struct i40e_mac_filter *f;
1248
1249         if (!vsi || !macaddr)
1250                 return NULL;
1251
1252         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1253                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1254                     (!is_vf || f->is_vf) &&
1255                     (!is_netdev || f->is_netdev))
1256                         return f;
1257         }
1258         return NULL;
1259 }
1260
1261 /**
1262  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1263  * @vsi: the VSI to be searched
1264  *
1265  * Returns true if VSI is in vlan mode or false otherwise
1266  **/
1267 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1268 {
1269         struct i40e_mac_filter *f;
1270
1271         /* Only -1 for all the filters denotes not in vlan mode
1272          * so we have to go through all the list in order to make sure
1273          */
1274         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1275                 if (f->vlan >= 0 || vsi->info.pvid)
1276                         return true;
1277         }
1278
1279         return false;
1280 }
1281
1282 /**
1283  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1284  * @vsi: the VSI to be searched
1285  * @macaddr: the mac address to be filtered
1286  * @is_vf: true if it is a VF
1287  * @is_netdev: true if it is a netdev
1288  *
1289  * Goes through all the macvlan filters and adds a
1290  * macvlan filter for each unique vlan that already exists
1291  *
1292  * Returns first filter found on success, else NULL
1293  **/
1294 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1295                                              bool is_vf, bool is_netdev)
1296 {
1297         struct i40e_mac_filter *f;
1298
1299         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1300                 if (vsi->info.pvid)
1301                         f->vlan = le16_to_cpu(vsi->info.pvid);
1302                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1303                                       is_vf, is_netdev)) {
1304                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1305                                              is_vf, is_netdev))
1306                                 return NULL;
1307                 }
1308         }
1309
1310         return list_first_entry_or_null(&vsi->mac_filter_list,
1311                                         struct i40e_mac_filter, list);
1312 }
1313
1314 /**
1315  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1316  * @vsi: the PF Main VSI - inappropriate for any other VSI
1317  * @macaddr: the MAC address
1318  *
1319  * Some older firmware configurations set up a default promiscuous VLAN
1320  * filter that needs to be removed.
1321  **/
1322 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1323 {
1324         struct i40e_aqc_remove_macvlan_element_data element;
1325         struct i40e_pf *pf = vsi->back;
1326         i40e_status ret;
1327
1328         /* Only appropriate for the PF main VSI */
1329         if (vsi->type != I40E_VSI_MAIN)
1330                 return -EINVAL;
1331
1332         memset(&element, 0, sizeof(element));
1333         ether_addr_copy(element.mac_addr, macaddr);
1334         element.vlan_tag = 0;
1335         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1336                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1337         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1338         if (ret)
1339                 return -ENOENT;
1340
1341         return 0;
1342 }
1343
1344 /**
1345  * i40e_add_filter - Add a mac/vlan filter to the VSI
1346  * @vsi: the VSI to be searched
1347  * @macaddr: the MAC address
1348  * @vlan: the vlan
1349  * @is_vf: make sure its a VF filter, else doesn't matter
1350  * @is_netdev: make sure its a netdev filter, else doesn't matter
1351  *
1352  * Returns ptr to the filter object or NULL when no memory available.
1353  **/
1354 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1355                                         u8 *macaddr, s16 vlan,
1356                                         bool is_vf, bool is_netdev)
1357 {
1358         struct i40e_mac_filter *f;
1359
1360         if (!vsi || !macaddr)
1361                 return NULL;
1362
1363         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1364         if (!f) {
1365                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1366                 if (!f)
1367                         goto add_filter_out;
1368
1369                 ether_addr_copy(f->macaddr, macaddr);
1370                 f->vlan = vlan;
1371                 f->changed = true;
1372
1373                 INIT_LIST_HEAD(&f->list);
1374                 list_add(&f->list, &vsi->mac_filter_list);
1375         }
1376
1377         /* increment counter and add a new flag if needed */
1378         if (is_vf) {
1379                 if (!f->is_vf) {
1380                         f->is_vf = true;
1381                         f->counter++;
1382                 }
1383         } else if (is_netdev) {
1384                 if (!f->is_netdev) {
1385                         f->is_netdev = true;
1386                         f->counter++;
1387                 }
1388         } else {
1389                 f->counter++;
1390         }
1391
1392         /* changed tells sync_filters_subtask to
1393          * push the filter down to the firmware
1394          */
1395         if (f->changed) {
1396                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1397                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1398         }
1399
1400 add_filter_out:
1401         return f;
1402 }
1403
1404 /**
1405  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1406  * @vsi: the VSI to be searched
1407  * @macaddr: the MAC address
1408  * @vlan: the vlan
1409  * @is_vf: make sure it's a VF filter, else doesn't matter
1410  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1411  **/
1412 void i40e_del_filter(struct i40e_vsi *vsi,
1413                      u8 *macaddr, s16 vlan,
1414                      bool is_vf, bool is_netdev)
1415 {
1416         struct i40e_mac_filter *f;
1417
1418         if (!vsi || !macaddr)
1419                 return;
1420
1421         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1422         if (!f || f->counter == 0)
1423                 return;
1424
1425         if (is_vf) {
1426                 if (f->is_vf) {
1427                         f->is_vf = false;
1428                         f->counter--;
1429                 }
1430         } else if (is_netdev) {
1431                 if (f->is_netdev) {
1432                         f->is_netdev = false;
1433                         f->counter--;
1434                 }
1435         } else {
1436                 /* make sure we don't remove a filter in use by VF or netdev */
1437                 int min_f = 0;
1438                 min_f += (f->is_vf ? 1 : 0);
1439                 min_f += (f->is_netdev ? 1 : 0);
1440
1441                 if (f->counter > min_f)
1442                         f->counter--;
1443         }
1444
1445         /* counter == 0 tells sync_filters_subtask to
1446          * remove the filter from the firmware's list
1447          */
1448         if (f->counter == 0) {
1449                 f->changed = true;
1450                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1451                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1452         }
1453 }
1454
1455 /**
1456  * i40e_set_mac - NDO callback to set mac address
1457  * @netdev: network interface device structure
1458  * @p: pointer to an address structure
1459  *
1460  * Returns 0 on success, negative on failure
1461  **/
1462 #ifdef I40E_FCOE
1463 int i40e_set_mac(struct net_device *netdev, void *p)
1464 #else
1465 static int i40e_set_mac(struct net_device *netdev, void *p)
1466 #endif
1467 {
1468         struct i40e_netdev_priv *np = netdev_priv(netdev);
1469         struct i40e_vsi *vsi = np->vsi;
1470         struct i40e_pf *pf = vsi->back;
1471         struct i40e_hw *hw = &pf->hw;
1472         struct sockaddr *addr = p;
1473         struct i40e_mac_filter *f;
1474
1475         if (!is_valid_ether_addr(addr->sa_data))
1476                 return -EADDRNOTAVAIL;
1477
1478         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1479                 netdev_info(netdev, "already using mac address %pM\n",
1480                             addr->sa_data);
1481                 return 0;
1482         }
1483
1484         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1485             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1486                 return -EADDRNOTAVAIL;
1487
1488         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1489                 netdev_info(netdev, "returning to hw mac address %pM\n",
1490                             hw->mac.addr);
1491         else
1492                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1493
1494         if (vsi->type == I40E_VSI_MAIN) {
1495                 i40e_status ret;
1496                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1497                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1498                                                 addr->sa_data, NULL);
1499                 if (ret) {
1500                         netdev_info(netdev,
1501                                     "Addr change for Main VSI failed: %d\n",
1502                                     ret);
1503                         return -EADDRNOTAVAIL;
1504                 }
1505         }
1506
1507         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1508                 struct i40e_aqc_remove_macvlan_element_data element;
1509
1510                 memset(&element, 0, sizeof(element));
1511                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1512                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1513                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1514         } else {
1515                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1516                                 false, false);
1517         }
1518
1519         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1520                 struct i40e_aqc_add_macvlan_element_data element;
1521
1522                 memset(&element, 0, sizeof(element));
1523                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1524                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1525                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1526         } else {
1527                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1528                                     false, false);
1529                 if (f)
1530                         f->is_laa = true;
1531         }
1532
1533         i40e_sync_vsi_filters(vsi, false);
1534         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1535
1536         return 0;
1537 }
1538
1539 /**
1540  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1541  * @vsi: the VSI being setup
1542  * @ctxt: VSI context structure
1543  * @enabled_tc: Enabled TCs bitmap
1544  * @is_add: True if called before Add VSI
1545  *
1546  * Setup VSI queue mapping for enabled traffic classes.
1547  **/
1548 #ifdef I40E_FCOE
1549 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1550                               struct i40e_vsi_context *ctxt,
1551                               u8 enabled_tc,
1552                               bool is_add)
1553 #else
1554 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1555                                      struct i40e_vsi_context *ctxt,
1556                                      u8 enabled_tc,
1557                                      bool is_add)
1558 #endif
1559 {
1560         struct i40e_pf *pf = vsi->back;
1561         u16 sections = 0;
1562         u8 netdev_tc = 0;
1563         u16 numtc = 0;
1564         u16 qcount;
1565         u8 offset;
1566         u16 qmap;
1567         int i;
1568         u16 num_tc_qps = 0;
1569
1570         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1571         offset = 0;
1572
1573         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1574                 /* Find numtc from enabled TC bitmap */
1575                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1576                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1577                                 numtc++;
1578                 }
1579                 if (!numtc) {
1580                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1581                         numtc = 1;
1582                 }
1583         } else {
1584                 /* At least TC0 is enabled in case of non-DCB case */
1585                 numtc = 1;
1586         }
1587
1588         vsi->tc_config.numtc = numtc;
1589         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1590         /* Number of queues per enabled TC */
1591         /* In MFP case we can have a much lower count of MSIx
1592          * vectors available and so we need to lower the used
1593          * q count.
1594          */
1595         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1596                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1597         else
1598                 qcount = vsi->alloc_queue_pairs;
1599         num_tc_qps = qcount / numtc;
1600         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1601
1602         /* Setup queue offset/count for all TCs for given VSI */
1603         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1604                 /* See if the given TC is enabled for the given VSI */
1605                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1606                         /* TC is enabled */
1607                         int pow, num_qps;
1608
1609                         switch (vsi->type) {
1610                         case I40E_VSI_MAIN:
1611                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1612                                 break;
1613 #ifdef I40E_FCOE
1614                         case I40E_VSI_FCOE:
1615                                 qcount = num_tc_qps;
1616                                 break;
1617 #endif
1618                         case I40E_VSI_FDIR:
1619                         case I40E_VSI_SRIOV:
1620                         case I40E_VSI_VMDQ2:
1621                         default:
1622                                 qcount = num_tc_qps;
1623                                 WARN_ON(i != 0);
1624                                 break;
1625                         }
1626                         vsi->tc_config.tc_info[i].qoffset = offset;
1627                         vsi->tc_config.tc_info[i].qcount = qcount;
1628
1629                         /* find the next higher power-of-2 of num queue pairs */
1630                         num_qps = qcount;
1631                         pow = 0;
1632                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1633                                 pow++;
1634                                 num_qps >>= 1;
1635                         }
1636
1637                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1638                         qmap =
1639                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1640                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1641
1642                         offset += qcount;
1643                 } else {
1644                         /* TC is not enabled so set the offset to
1645                          * default queue and allocate one queue
1646                          * for the given TC.
1647                          */
1648                         vsi->tc_config.tc_info[i].qoffset = 0;
1649                         vsi->tc_config.tc_info[i].qcount = 1;
1650                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1651
1652                         qmap = 0;
1653                 }
1654                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1655         }
1656
1657         /* Set actual Tx/Rx queue pairs */
1658         vsi->num_queue_pairs = offset;
1659         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1660                 if (vsi->req_queue_pairs > 0)
1661                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1662                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1663                         vsi->num_queue_pairs = pf->num_lan_msix;
1664         }
1665
1666         /* Scheduler section valid can only be set for ADD VSI */
1667         if (is_add) {
1668                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1669
1670                 ctxt->info.up_enable_bits = enabled_tc;
1671         }
1672         if (vsi->type == I40E_VSI_SRIOV) {
1673                 ctxt->info.mapping_flags |=
1674                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1675                 for (i = 0; i < vsi->num_queue_pairs; i++)
1676                         ctxt->info.queue_mapping[i] =
1677                                                cpu_to_le16(vsi->base_queue + i);
1678         } else {
1679                 ctxt->info.mapping_flags |=
1680                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1681                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1682         }
1683         ctxt->info.valid_sections |= cpu_to_le16(sections);
1684 }
1685
1686 /**
1687  * i40e_set_rx_mode - NDO callback to set the netdev filters
1688  * @netdev: network interface device structure
1689  **/
1690 #ifdef I40E_FCOE
1691 void i40e_set_rx_mode(struct net_device *netdev)
1692 #else
1693 static void i40e_set_rx_mode(struct net_device *netdev)
1694 #endif
1695 {
1696         struct i40e_netdev_priv *np = netdev_priv(netdev);
1697         struct i40e_mac_filter *f, *ftmp;
1698         struct i40e_vsi *vsi = np->vsi;
1699         struct netdev_hw_addr *uca;
1700         struct netdev_hw_addr *mca;
1701         struct netdev_hw_addr *ha;
1702
1703         /* add addr if not already in the filter list */
1704         netdev_for_each_uc_addr(uca, netdev) {
1705                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1706                         if (i40e_is_vsi_in_vlan(vsi))
1707                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1708                                                      false, true);
1709                         else
1710                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1711                                                 false, true);
1712                 }
1713         }
1714
1715         netdev_for_each_mc_addr(mca, netdev) {
1716                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1717                         if (i40e_is_vsi_in_vlan(vsi))
1718                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1719                                                      false, true);
1720                         else
1721                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1722                                                 false, true);
1723                 }
1724         }
1725
1726         /* remove filter if not in netdev list */
1727         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1728                 bool found = false;
1729
1730                 if (!f->is_netdev)
1731                         continue;
1732
1733                 if (is_multicast_ether_addr(f->macaddr)) {
1734                         netdev_for_each_mc_addr(mca, netdev) {
1735                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1736                                         found = true;
1737                                         break;
1738                                 }
1739                         }
1740                 } else {
1741                         netdev_for_each_uc_addr(uca, netdev) {
1742                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1743                                         found = true;
1744                                         break;
1745                                 }
1746                         }
1747
1748                         for_each_dev_addr(netdev, ha) {
1749                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1750                                         found = true;
1751                                         break;
1752                                 }
1753                         }
1754                 }
1755                 if (!found)
1756                         i40e_del_filter(
1757                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1758         }
1759
1760         /* check for other flag changes */
1761         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1762                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1763                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1764         }
1765 }
1766
1767 /**
1768  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1769  * @vsi: ptr to the VSI
1770  * @grab_rtnl: whether RTNL needs to be grabbed
1771  *
1772  * Push any outstanding VSI filter changes through the AdminQ.
1773  *
1774  * Returns 0 or error value
1775  **/
1776 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1777 {
1778         struct i40e_mac_filter *f, *ftmp;
1779         bool promisc_forced_on = false;
1780         bool add_happened = false;
1781         int filter_list_len = 0;
1782         u32 changed_flags = 0;
1783         i40e_status ret = 0;
1784         struct i40e_pf *pf;
1785         int num_add = 0;
1786         int num_del = 0;
1787         int aq_err = 0;
1788         u16 cmd_flags;
1789
1790         /* empty array typed pointers, kcalloc later */
1791         struct i40e_aqc_add_macvlan_element_data *add_list;
1792         struct i40e_aqc_remove_macvlan_element_data *del_list;
1793
1794         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1795                 usleep_range(1000, 2000);
1796         pf = vsi->back;
1797
1798         if (vsi->netdev) {
1799                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1800                 vsi->current_netdev_flags = vsi->netdev->flags;
1801         }
1802
1803         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1804                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1805
1806                 filter_list_len = pf->hw.aq.asq_buf_size /
1807                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1808                 del_list = kcalloc(filter_list_len,
1809                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1810                             GFP_KERNEL);
1811                 if (!del_list)
1812                         return -ENOMEM;
1813
1814                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1815                         if (!f->changed)
1816                                 continue;
1817
1818                         if (f->counter != 0)
1819                                 continue;
1820                         f->changed = false;
1821                         cmd_flags = 0;
1822
1823                         /* add to delete list */
1824                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1825                         del_list[num_del].vlan_tag =
1826                                 cpu_to_le16((u16)(f->vlan ==
1827                                             I40E_VLAN_ANY ? 0 : f->vlan));
1828
1829                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1830                         del_list[num_del].flags = cmd_flags;
1831                         num_del++;
1832
1833                         /* unlink from filter list */
1834                         list_del(&f->list);
1835                         kfree(f);
1836
1837                         /* flush a full buffer */
1838                         if (num_del == filter_list_len) {
1839                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1840                                                   vsi->seid, del_list, num_del,
1841                                                   NULL);
1842                                 aq_err = pf->hw.aq.asq_last_status;
1843                                 num_del = 0;
1844                                 memset(del_list, 0, sizeof(*del_list));
1845
1846                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1847                                         dev_info(&pf->pdev->dev,
1848                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1849                                                  i40e_stat_str(&pf->hw, ret),
1850                                                  i40e_aq_str(&pf->hw, aq_err));
1851                         }
1852                 }
1853                 if (num_del) {
1854                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1855                                                      del_list, num_del, NULL);
1856                         aq_err = pf->hw.aq.asq_last_status;
1857                         num_del = 0;
1858
1859                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1860                                 dev_info(&pf->pdev->dev,
1861                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1862                                          i40e_stat_str(&pf->hw, ret),
1863                                          i40e_aq_str(&pf->hw, aq_err));
1864                 }
1865
1866                 kfree(del_list);
1867                 del_list = NULL;
1868
1869                 /* do all the adds now */
1870                 filter_list_len = pf->hw.aq.asq_buf_size /
1871                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1872                 add_list = kcalloc(filter_list_len,
1873                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1874                                GFP_KERNEL);
1875                 if (!add_list)
1876                         return -ENOMEM;
1877
1878                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1879                         if (!f->changed)
1880                                 continue;
1881
1882                         if (f->counter == 0)
1883                                 continue;
1884                         f->changed = false;
1885                         add_happened = true;
1886                         cmd_flags = 0;
1887
1888                         /* add to add array */
1889                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1890                         add_list[num_add].vlan_tag =
1891                                 cpu_to_le16(
1892                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1893                         add_list[num_add].queue_number = 0;
1894
1895                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1896                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1897                         num_add++;
1898
1899                         /* flush a full buffer */
1900                         if (num_add == filter_list_len) {
1901                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1902                                                           add_list, num_add,
1903                                                           NULL);
1904                                 aq_err = pf->hw.aq.asq_last_status;
1905                                 num_add = 0;
1906
1907                                 if (ret)
1908                                         break;
1909                                 memset(add_list, 0, sizeof(*add_list));
1910                         }
1911                 }
1912                 if (num_add) {
1913                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1914                                                   add_list, num_add, NULL);
1915                         aq_err = pf->hw.aq.asq_last_status;
1916                         num_add = 0;
1917                 }
1918                 kfree(add_list);
1919                 add_list = NULL;
1920
1921                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1922                         dev_info(&pf->pdev->dev,
1923                                  "add filter failed, err %s aq_err %s\n",
1924                                  i40e_stat_str(&pf->hw, ret),
1925                                  i40e_aq_str(&pf->hw, aq_err));
1926                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1927                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1928                                       &vsi->state)) {
1929                                 promisc_forced_on = true;
1930                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1931                                         &vsi->state);
1932                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1933                         }
1934                 }
1935         }
1936
1937         /* check for changes in promiscuous modes */
1938         if (changed_flags & IFF_ALLMULTI) {
1939                 bool cur_multipromisc;
1940                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1941                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1942                                                             vsi->seid,
1943                                                             cur_multipromisc,
1944                                                             NULL);
1945                 if (ret)
1946                         dev_info(&pf->pdev->dev,
1947                                  "set multi promisc failed, err %s aq_err %s\n",
1948                                  i40e_stat_str(&pf->hw, ret),
1949                                  i40e_aq_str(&pf->hw,
1950                                              pf->hw.aq.asq_last_status));
1951         }
1952         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1953                 bool cur_promisc;
1954                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1955                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1956                                         &vsi->state));
1957                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1958                         /* set defport ON for Main VSI instead of true promisc
1959                          * this way we will get all unicast/multicast and VLAN
1960                          * promisc behavior but will not get VF or VMDq traffic
1961                          * replicated on the Main VSI.
1962                          */
1963                         if (pf->cur_promisc != cur_promisc) {
1964                                 pf->cur_promisc = cur_promisc;
1965                                 if (grab_rtnl)
1966                                         i40e_do_reset_safe(pf,
1967                                                 BIT(__I40E_PF_RESET_REQUESTED));
1968                                 else
1969                                         i40e_do_reset(pf,
1970                                                 BIT(__I40E_PF_RESET_REQUESTED));
1971                         }
1972                 } else {
1973                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1974                                                           &vsi->back->hw,
1975                                                           vsi->seid,
1976                                                           cur_promisc, NULL);
1977                         if (ret)
1978                                 dev_info(&pf->pdev->dev,
1979                                          "set unicast promisc failed, err %d, aq_err %d\n",
1980                                          ret, pf->hw.aq.asq_last_status);
1981                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1982                                                           &vsi->back->hw,
1983                                                           vsi->seid,
1984                                                           cur_promisc, NULL);
1985                         if (ret)
1986                                 dev_info(&pf->pdev->dev,
1987                                          "set multicast promisc failed, err %d, aq_err %d\n",
1988                                          ret, pf->hw.aq.asq_last_status);
1989                 }
1990                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1991                                                 vsi->seid,
1992                                                 cur_promisc, NULL);
1993                 if (ret)
1994                         dev_info(&pf->pdev->dev,
1995                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1996                                  i40e_stat_str(&pf->hw, ret),
1997                                  i40e_aq_str(&pf->hw,
1998                                              pf->hw.aq.asq_last_status));
1999         }
2000
2001         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2002         return 0;
2003 }
2004
2005 /**
2006  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2007  * @pf: board private structure
2008  **/
2009 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2010 {
2011         int v;
2012
2013         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2014                 return;
2015         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2016
2017         for (v = 0; v < pf->num_alloc_vsi; v++) {
2018                 if (pf->vsi[v] &&
2019                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2020                         i40e_sync_vsi_filters(pf->vsi[v], true);
2021         }
2022 }
2023
2024 /**
2025  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2026  * @netdev: network interface device structure
2027  * @new_mtu: new value for maximum frame size
2028  *
2029  * Returns 0 on success, negative on failure
2030  **/
2031 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2032 {
2033         struct i40e_netdev_priv *np = netdev_priv(netdev);
2034         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2035         struct i40e_vsi *vsi = np->vsi;
2036
2037         /* MTU < 68 is an error and causes problems on some kernels */
2038         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2039                 return -EINVAL;
2040
2041         netdev_info(netdev, "changing MTU from %d to %d\n",
2042                     netdev->mtu, new_mtu);
2043         netdev->mtu = new_mtu;
2044         if (netif_running(netdev))
2045                 i40e_vsi_reinit_locked(vsi);
2046
2047         return 0;
2048 }
2049
2050 /**
2051  * i40e_ioctl - Access the hwtstamp interface
2052  * @netdev: network interface device structure
2053  * @ifr: interface request data
2054  * @cmd: ioctl command
2055  **/
2056 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2057 {
2058         struct i40e_netdev_priv *np = netdev_priv(netdev);
2059         struct i40e_pf *pf = np->vsi->back;
2060
2061         switch (cmd) {
2062         case SIOCGHWTSTAMP:
2063                 return i40e_ptp_get_ts_config(pf, ifr);
2064         case SIOCSHWTSTAMP:
2065                 return i40e_ptp_set_ts_config(pf, ifr);
2066         default:
2067                 return -EOPNOTSUPP;
2068         }
2069 }
2070
2071 /**
2072  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2073  * @vsi: the vsi being adjusted
2074  **/
2075 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2076 {
2077         struct i40e_vsi_context ctxt;
2078         i40e_status ret;
2079
2080         if ((vsi->info.valid_sections &
2081              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2082             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2083                 return;  /* already enabled */
2084
2085         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2086         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2087                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2088
2089         ctxt.seid = vsi->seid;
2090         ctxt.info = vsi->info;
2091         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2092         if (ret) {
2093                 dev_info(&vsi->back->pdev->dev,
2094                          "update vlan stripping failed, err %s aq_err %s\n",
2095                          i40e_stat_str(&vsi->back->hw, ret),
2096                          i40e_aq_str(&vsi->back->hw,
2097                                      vsi->back->hw.aq.asq_last_status));
2098         }
2099 }
2100
2101 /**
2102  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2103  * @vsi: the vsi being adjusted
2104  **/
2105 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2106 {
2107         struct i40e_vsi_context ctxt;
2108         i40e_status ret;
2109
2110         if ((vsi->info.valid_sections &
2111              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2112             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2113              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2114                 return;  /* already disabled */
2115
2116         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2117         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2118                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2119
2120         ctxt.seid = vsi->seid;
2121         ctxt.info = vsi->info;
2122         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2123         if (ret) {
2124                 dev_info(&vsi->back->pdev->dev,
2125                          "update vlan stripping failed, err %s aq_err %s\n",
2126                          i40e_stat_str(&vsi->back->hw, ret),
2127                          i40e_aq_str(&vsi->back->hw,
2128                                      vsi->back->hw.aq.asq_last_status));
2129         }
2130 }
2131
2132 /**
2133  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2134  * @netdev: network interface to be adjusted
2135  * @features: netdev features to test if VLAN offload is enabled or not
2136  **/
2137 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2138 {
2139         struct i40e_netdev_priv *np = netdev_priv(netdev);
2140         struct i40e_vsi *vsi = np->vsi;
2141
2142         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2143                 i40e_vlan_stripping_enable(vsi);
2144         else
2145                 i40e_vlan_stripping_disable(vsi);
2146 }
2147
2148 /**
2149  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2150  * @vsi: the vsi being configured
2151  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2152  **/
2153 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2154 {
2155         struct i40e_mac_filter *f, *add_f;
2156         bool is_netdev, is_vf;
2157
2158         is_vf = (vsi->type == I40E_VSI_SRIOV);
2159         is_netdev = !!(vsi->netdev);
2160
2161         if (is_netdev) {
2162                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2163                                         is_vf, is_netdev);
2164                 if (!add_f) {
2165                         dev_info(&vsi->back->pdev->dev,
2166                                  "Could not add vlan filter %d for %pM\n",
2167                                  vid, vsi->netdev->dev_addr);
2168                         return -ENOMEM;
2169                 }
2170         }
2171
2172         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2173                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2174                 if (!add_f) {
2175                         dev_info(&vsi->back->pdev->dev,
2176                                  "Could not add vlan filter %d for %pM\n",
2177                                  vid, f->macaddr);
2178                         return -ENOMEM;
2179                 }
2180         }
2181
2182         /* Now if we add a vlan tag, make sure to check if it is the first
2183          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2184          * with 0, so we now accept untagged and specified tagged traffic
2185          * (and not any taged and untagged)
2186          */
2187         if (vid > 0) {
2188                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2189                                                   I40E_VLAN_ANY,
2190                                                   is_vf, is_netdev)) {
2191                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2192                                         I40E_VLAN_ANY, is_vf, is_netdev);
2193                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2194                                                 is_vf, is_netdev);
2195                         if (!add_f) {
2196                                 dev_info(&vsi->back->pdev->dev,
2197                                          "Could not add filter 0 for %pM\n",
2198                                          vsi->netdev->dev_addr);
2199                                 return -ENOMEM;
2200                         }
2201                 }
2202         }
2203
2204         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2205         if (vid > 0 && !vsi->info.pvid) {
2206                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2207                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2208                                              is_vf, is_netdev)) {
2209                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2210                                                 is_vf, is_netdev);
2211                                 add_f = i40e_add_filter(vsi, f->macaddr,
2212                                                         0, is_vf, is_netdev);
2213                                 if (!add_f) {
2214                                         dev_info(&vsi->back->pdev->dev,
2215                                                  "Could not add filter 0 for %pM\n",
2216                                                  f->macaddr);
2217                                         return -ENOMEM;
2218                                 }
2219                         }
2220                 }
2221         }
2222
2223         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2224             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2225                 return 0;
2226
2227         return i40e_sync_vsi_filters(vsi, false);
2228 }
2229
2230 /**
2231  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2232  * @vsi: the vsi being configured
2233  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2234  *
2235  * Return: 0 on success or negative otherwise
2236  **/
2237 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2238 {
2239         struct net_device *netdev = vsi->netdev;
2240         struct i40e_mac_filter *f, *add_f;
2241         bool is_vf, is_netdev;
2242         int filter_count = 0;
2243
2244         is_vf = (vsi->type == I40E_VSI_SRIOV);
2245         is_netdev = !!(netdev);
2246
2247         if (is_netdev)
2248                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2249
2250         list_for_each_entry(f, &vsi->mac_filter_list, list)
2251                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2252
2253         /* go through all the filters for this VSI and if there is only
2254          * vid == 0 it means there are no other filters, so vid 0 must
2255          * be replaced with -1. This signifies that we should from now
2256          * on accept any traffic (with any tag present, or untagged)
2257          */
2258         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2259                 if (is_netdev) {
2260                         if (f->vlan &&
2261                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2262                                 filter_count++;
2263                 }
2264
2265                 if (f->vlan)
2266                         filter_count++;
2267         }
2268
2269         if (!filter_count && is_netdev) {
2270                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2271                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2272                                     is_vf, is_netdev);
2273                 if (!f) {
2274                         dev_info(&vsi->back->pdev->dev,
2275                                  "Could not add filter %d for %pM\n",
2276                                  I40E_VLAN_ANY, netdev->dev_addr);
2277                         return -ENOMEM;
2278                 }
2279         }
2280
2281         if (!filter_count) {
2282                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2283                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2284                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2285                                             is_vf, is_netdev);
2286                         if (!add_f) {
2287                                 dev_info(&vsi->back->pdev->dev,
2288                                          "Could not add filter %d for %pM\n",
2289                                          I40E_VLAN_ANY, f->macaddr);
2290                                 return -ENOMEM;
2291                         }
2292                 }
2293         }
2294
2295         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2296             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2297                 return 0;
2298
2299         return i40e_sync_vsi_filters(vsi, false);
2300 }
2301
2302 /**
2303  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2304  * @netdev: network interface to be adjusted
2305  * @vid: vlan id to be added
2306  *
2307  * net_device_ops implementation for adding vlan ids
2308  **/
2309 #ifdef I40E_FCOE
2310 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2311                          __always_unused __be16 proto, u16 vid)
2312 #else
2313 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2314                                 __always_unused __be16 proto, u16 vid)
2315 #endif
2316 {
2317         struct i40e_netdev_priv *np = netdev_priv(netdev);
2318         struct i40e_vsi *vsi = np->vsi;
2319         int ret = 0;
2320
2321         if (vid > 4095)
2322                 return -EINVAL;
2323
2324         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2325
2326         /* If the network stack called us with vid = 0 then
2327          * it is asking to receive priority tagged packets with
2328          * vlan id 0.  Our HW receives them by default when configured
2329          * to receive untagged packets so there is no need to add an
2330          * extra filter for vlan 0 tagged packets.
2331          */
2332         if (vid)
2333                 ret = i40e_vsi_add_vlan(vsi, vid);
2334
2335         if (!ret && (vid < VLAN_N_VID))
2336                 set_bit(vid, vsi->active_vlans);
2337
2338         return ret;
2339 }
2340
2341 /**
2342  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2343  * @netdev: network interface to be adjusted
2344  * @vid: vlan id to be removed
2345  *
2346  * net_device_ops implementation for removing vlan ids
2347  **/
2348 #ifdef I40E_FCOE
2349 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2350                           __always_unused __be16 proto, u16 vid)
2351 #else
2352 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2353                                  __always_unused __be16 proto, u16 vid)
2354 #endif
2355 {
2356         struct i40e_netdev_priv *np = netdev_priv(netdev);
2357         struct i40e_vsi *vsi = np->vsi;
2358
2359         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2360
2361         /* return code is ignored as there is nothing a user
2362          * can do about failure to remove and a log message was
2363          * already printed from the other function
2364          */
2365         i40e_vsi_kill_vlan(vsi, vid);
2366
2367         clear_bit(vid, vsi->active_vlans);
2368
2369         return 0;
2370 }
2371
2372 /**
2373  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2374  * @vsi: the vsi being brought back up
2375  **/
2376 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2377 {
2378         u16 vid;
2379
2380         if (!vsi->netdev)
2381                 return;
2382
2383         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2384
2385         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2386                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2387                                      vid);
2388 }
2389
2390 /**
2391  * i40e_vsi_add_pvid - Add pvid for the VSI
2392  * @vsi: the vsi being adjusted
2393  * @vid: the vlan id to set as a PVID
2394  **/
2395 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2396 {
2397         struct i40e_vsi_context ctxt;
2398         i40e_status ret;
2399
2400         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2401         vsi->info.pvid = cpu_to_le16(vid);
2402         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2403                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2404                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2405
2406         ctxt.seid = vsi->seid;
2407         ctxt.info = vsi->info;
2408         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2409         if (ret) {
2410                 dev_info(&vsi->back->pdev->dev,
2411                          "add pvid failed, err %s aq_err %s\n",
2412                          i40e_stat_str(&vsi->back->hw, ret),
2413                          i40e_aq_str(&vsi->back->hw,
2414                                      vsi->back->hw.aq.asq_last_status));
2415                 return -ENOENT;
2416         }
2417
2418         return 0;
2419 }
2420
2421 /**
2422  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2423  * @vsi: the vsi being adjusted
2424  *
2425  * Just use the vlan_rx_register() service to put it back to normal
2426  **/
2427 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2428 {
2429         i40e_vlan_stripping_disable(vsi);
2430
2431         vsi->info.pvid = 0;
2432 }
2433
2434 /**
2435  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2436  * @vsi: ptr to the VSI
2437  *
2438  * If this function returns with an error, then it's possible one or
2439  * more of the rings is populated (while the rest are not).  It is the
2440  * callers duty to clean those orphaned rings.
2441  *
2442  * Return 0 on success, negative on failure
2443  **/
2444 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2445 {
2446         int i, err = 0;
2447
2448         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2449                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2450
2451         return err;
2452 }
2453
2454 /**
2455  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2456  * @vsi: ptr to the VSI
2457  *
2458  * Free VSI's transmit software resources
2459  **/
2460 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2461 {
2462         int i;
2463
2464         if (!vsi->tx_rings)
2465                 return;
2466
2467         for (i = 0; i < vsi->num_queue_pairs; i++)
2468                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2469                         i40e_free_tx_resources(vsi->tx_rings[i]);
2470 }
2471
2472 /**
2473  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2474  * @vsi: ptr to the VSI
2475  *
2476  * If this function returns with an error, then it's possible one or
2477  * more of the rings is populated (while the rest are not).  It is the
2478  * callers duty to clean those orphaned rings.
2479  *
2480  * Return 0 on success, negative on failure
2481  **/
2482 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2483 {
2484         int i, err = 0;
2485
2486         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2487                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2488 #ifdef I40E_FCOE
2489         i40e_fcoe_setup_ddp_resources(vsi);
2490 #endif
2491         return err;
2492 }
2493
2494 /**
2495  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2496  * @vsi: ptr to the VSI
2497  *
2498  * Free all receive software resources
2499  **/
2500 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2501 {
2502         int i;
2503
2504         if (!vsi->rx_rings)
2505                 return;
2506
2507         for (i = 0; i < vsi->num_queue_pairs; i++)
2508                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2509                         i40e_free_rx_resources(vsi->rx_rings[i]);
2510 #ifdef I40E_FCOE
2511         i40e_fcoe_free_ddp_resources(vsi);
2512 #endif
2513 }
2514
2515 /**
2516  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2517  * @ring: The Tx ring to configure
2518  *
2519  * This enables/disables XPS for a given Tx descriptor ring
2520  * based on the TCs enabled for the VSI that ring belongs to.
2521  **/
2522 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2523 {
2524         struct i40e_vsi *vsi = ring->vsi;
2525         cpumask_var_t mask;
2526
2527         if (!ring->q_vector || !ring->netdev)
2528                 return;
2529
2530         /* Single TC mode enable XPS */
2531         if (vsi->tc_config.numtc <= 1) {
2532                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2533                         netif_set_xps_queue(ring->netdev,
2534                                             &ring->q_vector->affinity_mask,
2535                                             ring->queue_index);
2536         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2537                 /* Disable XPS to allow selection based on TC */
2538                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2539                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2540                 free_cpumask_var(mask);
2541         }
2542 }
2543
2544 /**
2545  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2546  * @ring: The Tx ring to configure
2547  *
2548  * Configure the Tx descriptor ring in the HMC context.
2549  **/
2550 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2551 {
2552         struct i40e_vsi *vsi = ring->vsi;
2553         u16 pf_q = vsi->base_queue + ring->queue_index;
2554         struct i40e_hw *hw = &vsi->back->hw;
2555         struct i40e_hmc_obj_txq tx_ctx;
2556         i40e_status err = 0;
2557         u32 qtx_ctl = 0;
2558
2559         /* some ATR related tx ring init */
2560         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2561                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2562                 ring->atr_count = 0;
2563         } else {
2564                 ring->atr_sample_rate = 0;
2565         }
2566
2567         /* configure XPS */
2568         i40e_config_xps_tx_ring(ring);
2569
2570         /* clear the context structure first */
2571         memset(&tx_ctx, 0, sizeof(tx_ctx));
2572
2573         tx_ctx.new_context = 1;
2574         tx_ctx.base = (ring->dma / 128);
2575         tx_ctx.qlen = ring->count;
2576         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2577                                                I40E_FLAG_FD_ATR_ENABLED));
2578 #ifdef I40E_FCOE
2579         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2580 #endif
2581         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2582         /* FDIR VSI tx ring can still use RS bit and writebacks */
2583         if (vsi->type != I40E_VSI_FDIR)
2584                 tx_ctx.head_wb_ena = 1;
2585         tx_ctx.head_wb_addr = ring->dma +
2586                               (ring->count * sizeof(struct i40e_tx_desc));
2587
2588         /* As part of VSI creation/update, FW allocates certain
2589          * Tx arbitration queue sets for each TC enabled for
2590          * the VSI. The FW returns the handles to these queue
2591          * sets as part of the response buffer to Add VSI,
2592          * Update VSI, etc. AQ commands. It is expected that
2593          * these queue set handles be associated with the Tx
2594          * queues by the driver as part of the TX queue context
2595          * initialization. This has to be done regardless of
2596          * DCB as by default everything is mapped to TC0.
2597          */
2598         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2599         tx_ctx.rdylist_act = 0;
2600
2601         /* clear the context in the HMC */
2602         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2603         if (err) {
2604                 dev_info(&vsi->back->pdev->dev,
2605                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2606                          ring->queue_index, pf_q, err);
2607                 return -ENOMEM;
2608         }
2609
2610         /* set the context in the HMC */
2611         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2612         if (err) {
2613                 dev_info(&vsi->back->pdev->dev,
2614                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2615                          ring->queue_index, pf_q, err);
2616                 return -ENOMEM;
2617         }
2618
2619         /* Now associate this queue with this PCI function */
2620         if (vsi->type == I40E_VSI_VMDQ2) {
2621                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2622                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2623                            I40E_QTX_CTL_VFVM_INDX_MASK;
2624         } else {
2625                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2626         }
2627
2628         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2629                     I40E_QTX_CTL_PF_INDX_MASK);
2630         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2631         i40e_flush(hw);
2632
2633         /* cache tail off for easier writes later */
2634         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2635
2636         return 0;
2637 }
2638
2639 /**
2640  * i40e_configure_rx_ring - Configure a receive ring context
2641  * @ring: The Rx ring to configure
2642  *
2643  * Configure the Rx descriptor ring in the HMC context.
2644  **/
2645 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2646 {
2647         struct i40e_vsi *vsi = ring->vsi;
2648         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2649         u16 pf_q = vsi->base_queue + ring->queue_index;
2650         struct i40e_hw *hw = &vsi->back->hw;
2651         struct i40e_hmc_obj_rxq rx_ctx;
2652         i40e_status err = 0;
2653
2654         ring->state = 0;
2655
2656         /* clear the context structure first */
2657         memset(&rx_ctx, 0, sizeof(rx_ctx));
2658
2659         ring->rx_buf_len = vsi->rx_buf_len;
2660         ring->rx_hdr_len = vsi->rx_hdr_len;
2661
2662         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2663         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2664
2665         rx_ctx.base = (ring->dma / 128);
2666         rx_ctx.qlen = ring->count;
2667
2668         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2669                 set_ring_16byte_desc_enabled(ring);
2670                 rx_ctx.dsize = 0;
2671         } else {
2672                 rx_ctx.dsize = 1;
2673         }
2674
2675         rx_ctx.dtype = vsi->dtype;
2676         if (vsi->dtype) {
2677                 set_ring_ps_enabled(ring);
2678                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2679                                   I40E_RX_SPLIT_IP      |
2680                                   I40E_RX_SPLIT_TCP_UDP |
2681                                   I40E_RX_SPLIT_SCTP;
2682         } else {
2683                 rx_ctx.hsplit_0 = 0;
2684         }
2685
2686         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2687                                   (chain_len * ring->rx_buf_len));
2688         if (hw->revision_id == 0)
2689                 rx_ctx.lrxqthresh = 0;
2690         else
2691                 rx_ctx.lrxqthresh = 2;
2692         rx_ctx.crcstrip = 1;
2693         rx_ctx.l2tsel = 1;
2694         /* this controls whether VLAN is stripped from inner headers */
2695         rx_ctx.showiv = 0;
2696 #ifdef I40E_FCOE
2697         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2698 #endif
2699         /* set the prefena field to 1 because the manual says to */
2700         rx_ctx.prefena = 1;
2701
2702         /* clear the context in the HMC */
2703         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2704         if (err) {
2705                 dev_info(&vsi->back->pdev->dev,
2706                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2707                          ring->queue_index, pf_q, err);
2708                 return -ENOMEM;
2709         }
2710
2711         /* set the context in the HMC */
2712         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2713         if (err) {
2714                 dev_info(&vsi->back->pdev->dev,
2715                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2716                          ring->queue_index, pf_q, err);
2717                 return -ENOMEM;
2718         }
2719
2720         /* cache tail for quicker writes, and clear the reg before use */
2721         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2722         writel(0, ring->tail);
2723
2724         if (ring_is_ps_enabled(ring)) {
2725                 i40e_alloc_rx_headers(ring);
2726                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2727         } else {
2728                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2729         }
2730
2731         return 0;
2732 }
2733
2734 /**
2735  * i40e_vsi_configure_tx - Configure the VSI for Tx
2736  * @vsi: VSI structure describing this set of rings and resources
2737  *
2738  * Configure the Tx VSI for operation.
2739  **/
2740 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2741 {
2742         int err = 0;
2743         u16 i;
2744
2745         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2746                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2747
2748         return err;
2749 }
2750
2751 /**
2752  * i40e_vsi_configure_rx - Configure the VSI for Rx
2753  * @vsi: the VSI being configured
2754  *
2755  * Configure the Rx VSI for operation.
2756  **/
2757 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2758 {
2759         int err = 0;
2760         u16 i;
2761
2762         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2763                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2764                                + ETH_FCS_LEN + VLAN_HLEN;
2765         else
2766                 vsi->max_frame = I40E_RXBUFFER_2048;
2767
2768         /* figure out correct receive buffer length */
2769         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2770                                     I40E_FLAG_RX_PS_ENABLED)) {
2771         case I40E_FLAG_RX_1BUF_ENABLED:
2772                 vsi->rx_hdr_len = 0;
2773                 vsi->rx_buf_len = vsi->max_frame;
2774                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2775                 break;
2776         case I40E_FLAG_RX_PS_ENABLED:
2777                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2778                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2779                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2780                 break;
2781         default:
2782                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2783                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2784                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2785                 break;
2786         }
2787
2788 #ifdef I40E_FCOE
2789         /* setup rx buffer for FCoE */
2790         if ((vsi->type == I40E_VSI_FCOE) &&
2791             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2792                 vsi->rx_hdr_len = 0;
2793                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2794                 vsi->max_frame = I40E_RXBUFFER_3072;
2795                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2796         }
2797
2798 #endif /* I40E_FCOE */
2799         /* round up for the chip's needs */
2800         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2801                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2802         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2803                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2804
2805         /* set up individual rings */
2806         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2807                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2808
2809         return err;
2810 }
2811
2812 /**
2813  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2814  * @vsi: ptr to the VSI
2815  **/
2816 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2817 {
2818         struct i40e_ring *tx_ring, *rx_ring;
2819         u16 qoffset, qcount;
2820         int i, n;
2821
2822         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2823                 /* Reset the TC information */
2824                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2825                         rx_ring = vsi->rx_rings[i];
2826                         tx_ring = vsi->tx_rings[i];
2827                         rx_ring->dcb_tc = 0;
2828                         tx_ring->dcb_tc = 0;
2829                 }
2830         }
2831
2832         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2833                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2834                         continue;
2835
2836                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2837                 qcount = vsi->tc_config.tc_info[n].qcount;
2838                 for (i = qoffset; i < (qoffset + qcount); i++) {
2839                         rx_ring = vsi->rx_rings[i];
2840                         tx_ring = vsi->tx_rings[i];
2841                         rx_ring->dcb_tc = n;
2842                         tx_ring->dcb_tc = n;
2843                 }
2844         }
2845 }
2846
2847 /**
2848  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2849  * @vsi: ptr to the VSI
2850  **/
2851 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2852 {
2853         if (vsi->netdev)
2854                 i40e_set_rx_mode(vsi->netdev);
2855 }
2856
2857 /**
2858  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2859  * @vsi: Pointer to the targeted VSI
2860  *
2861  * This function replays the hlist on the hw where all the SB Flow Director
2862  * filters were saved.
2863  **/
2864 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2865 {
2866         struct i40e_fdir_filter *filter;
2867         struct i40e_pf *pf = vsi->back;
2868         struct hlist_node *node;
2869
2870         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2871                 return;
2872
2873         hlist_for_each_entry_safe(filter, node,
2874                                   &pf->fdir_filter_list, fdir_node) {
2875                 i40e_add_del_fdir(vsi, filter, true);
2876         }
2877 }
2878
2879 /**
2880  * i40e_vsi_configure - Set up the VSI for action
2881  * @vsi: the VSI being configured
2882  **/
2883 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2884 {
2885         int err;
2886
2887         i40e_set_vsi_rx_mode(vsi);
2888         i40e_restore_vlan(vsi);
2889         i40e_vsi_config_dcb_rings(vsi);
2890         err = i40e_vsi_configure_tx(vsi);
2891         if (!err)
2892                 err = i40e_vsi_configure_rx(vsi);
2893
2894         return err;
2895 }
2896
2897 /**
2898  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2899  * @vsi: the VSI being configured
2900  **/
2901 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2902 {
2903         struct i40e_pf *pf = vsi->back;
2904         struct i40e_q_vector *q_vector;
2905         struct i40e_hw *hw = &pf->hw;
2906         u16 vector;
2907         int i, q;
2908         u32 val;
2909         u32 qp;
2910
2911         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2912          * and PFINT_LNKLSTn registers, e.g.:
2913          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2914          */
2915         qp = vsi->base_queue;
2916         vector = vsi->base_vector;
2917         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2918                 q_vector = vsi->q_vectors[i];
2919                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2920                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2921                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2922                      q_vector->rx.itr);
2923                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2924                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2925                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2926                      q_vector->tx.itr);
2927
2928                 /* Linked list for the queuepairs assigned to this vector */
2929                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2930                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2931                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2932                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2933                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2934                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2935                               (I40E_QUEUE_TYPE_TX
2936                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2937
2938                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2939
2940                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2941                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2942                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2943                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2944                               (I40E_QUEUE_TYPE_RX
2945                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2946
2947                         /* Terminate the linked list */
2948                         if (q == (q_vector->num_ringpairs - 1))
2949                                 val |= (I40E_QUEUE_END_OF_LIST
2950                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2951
2952                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2953                         qp++;
2954                 }
2955         }
2956
2957         i40e_flush(hw);
2958 }
2959
2960 /**
2961  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2962  * @hw: ptr to the hardware info
2963  **/
2964 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2965 {
2966         struct i40e_hw *hw = &pf->hw;
2967         u32 val;
2968
2969         /* clear things first */
2970         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2971         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2972
2973         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2974               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2975               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2976               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2977               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2978               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2979               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2980               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2981
2982         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2983                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2984
2985         if (pf->flags & I40E_FLAG_PTP)
2986                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2987
2988         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2989
2990         /* SW_ITR_IDX = 0, but don't change INTENA */
2991         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2992                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2993
2994         /* OTHER_ITR_IDX = 0 */
2995         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2996 }
2997
2998 /**
2999  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3000  * @vsi: the VSI being configured
3001  **/
3002 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3003 {
3004         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3005         struct i40e_pf *pf = vsi->back;
3006         struct i40e_hw *hw = &pf->hw;
3007         u32 val;
3008
3009         /* set the ITR configuration */
3010         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3011         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3012         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3013         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3014         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3015         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3016
3017         i40e_enable_misc_int_causes(pf);
3018
3019         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3020         wr32(hw, I40E_PFINT_LNKLST0, 0);
3021
3022         /* Associate the queue pair to the vector and enable the queue int */
3023         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3024               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3025               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3026
3027         wr32(hw, I40E_QINT_RQCTL(0), val);
3028
3029         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3030               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3031               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3032
3033         wr32(hw, I40E_QINT_TQCTL(0), val);
3034         i40e_flush(hw);
3035 }
3036
3037 /**
3038  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3039  * @pf: board private structure
3040  **/
3041 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3042 {
3043         struct i40e_hw *hw = &pf->hw;
3044
3045         wr32(hw, I40E_PFINT_DYN_CTL0,
3046              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3047         i40e_flush(hw);
3048 }
3049
3050 /**
3051  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3052  * @pf: board private structure
3053  **/
3054 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3055 {
3056         struct i40e_hw *hw = &pf->hw;
3057         u32 val;
3058
3059         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3060               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3061               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3062
3063         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3064         i40e_flush(hw);
3065 }
3066
3067 /**
3068  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3069  * @vsi: pointer to a vsi
3070  * @vector: enable a particular Hw Interrupt vector, without base_vector
3071  **/
3072 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3073 {
3074         struct i40e_pf *pf = vsi->back;
3075         struct i40e_hw *hw = &pf->hw;
3076         u32 val;
3077
3078         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3079               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3080               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3081         wr32(hw, I40E_PFINT_DYN_CTLN(vector + vsi->base_vector - 1), val);
3082         /* skip the flush */
3083 }
3084
3085 /**
3086  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3087  * @vsi: pointer to a vsi
3088  * @vector: disable a particular Hw Interrupt vector
3089  **/
3090 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3091 {
3092         struct i40e_pf *pf = vsi->back;
3093         struct i40e_hw *hw = &pf->hw;
3094         u32 val;
3095
3096         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3097         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3098         i40e_flush(hw);
3099 }
3100
3101 /**
3102  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3103  * @irq: interrupt number
3104  * @data: pointer to a q_vector
3105  **/
3106 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3107 {
3108         struct i40e_q_vector *q_vector = data;
3109
3110         if (!q_vector->tx.ring && !q_vector->rx.ring)
3111                 return IRQ_HANDLED;
3112
3113         napi_schedule(&q_vector->napi);
3114
3115         return IRQ_HANDLED;
3116 }
3117
3118 /**
3119  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3120  * @vsi: the VSI being configured
3121  * @basename: name for the vector
3122  *
3123  * Allocates MSI-X vectors and requests interrupts from the kernel.
3124  **/
3125 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3126 {
3127         int q_vectors = vsi->num_q_vectors;
3128         struct i40e_pf *pf = vsi->back;
3129         int base = vsi->base_vector;
3130         int rx_int_idx = 0;
3131         int tx_int_idx = 0;
3132         int vector, err;
3133
3134         for (vector = 0; vector < q_vectors; vector++) {
3135                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3136
3137                 if (q_vector->tx.ring && q_vector->rx.ring) {
3138                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3139                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3140                         tx_int_idx++;
3141                 } else if (q_vector->rx.ring) {
3142                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3143                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3144                 } else if (q_vector->tx.ring) {
3145                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3146                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3147                 } else {
3148                         /* skip this unused q_vector */
3149                         continue;
3150                 }
3151                 err = request_irq(pf->msix_entries[base + vector].vector,
3152                                   vsi->irq_handler,
3153                                   0,
3154                                   q_vector->name,
3155                                   q_vector);
3156                 if (err) {
3157                         dev_info(&pf->pdev->dev,
3158                                  "%s: request_irq failed, error: %d\n",
3159                                  __func__, err);
3160                         goto free_queue_irqs;
3161                 }
3162                 /* assign the mask for this irq */
3163                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3164                                       &q_vector->affinity_mask);
3165         }
3166
3167         vsi->irqs_ready = true;
3168         return 0;
3169
3170 free_queue_irqs:
3171         while (vector) {
3172                 vector--;
3173                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3174                                       NULL);
3175                 free_irq(pf->msix_entries[base + vector].vector,
3176                          &(vsi->q_vectors[vector]));
3177         }
3178         return err;
3179 }
3180
3181 /**
3182  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3183  * @vsi: the VSI being un-configured
3184  **/
3185 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3186 {
3187         struct i40e_pf *pf = vsi->back;
3188         struct i40e_hw *hw = &pf->hw;
3189         int base = vsi->base_vector;
3190         int i;
3191
3192         for (i = 0; i < vsi->num_queue_pairs; i++) {
3193                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3194                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3195         }
3196
3197         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3198                 for (i = vsi->base_vector;
3199                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3200                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3201
3202                 i40e_flush(hw);
3203                 for (i = 0; i < vsi->num_q_vectors; i++)
3204                         synchronize_irq(pf->msix_entries[i + base].vector);
3205         } else {
3206                 /* Legacy and MSI mode - this stops all interrupt handling */
3207                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3208                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3209                 i40e_flush(hw);
3210                 synchronize_irq(pf->pdev->irq);
3211         }
3212 }
3213
3214 /**
3215  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3216  * @vsi: the VSI being configured
3217  **/
3218 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3219 {
3220         struct i40e_pf *pf = vsi->back;
3221         int i;
3222
3223         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3224                 for (i = 0; i < vsi->num_q_vectors; i++)
3225                         i40e_irq_dynamic_enable(vsi, i);
3226         } else {
3227                 i40e_irq_dynamic_enable_icr0(pf);
3228         }
3229
3230         i40e_flush(&pf->hw);
3231         return 0;
3232 }
3233
3234 /**
3235  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3236  * @pf: board private structure
3237  **/
3238 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3239 {
3240         /* Disable ICR 0 */
3241         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3242         i40e_flush(&pf->hw);
3243 }
3244
3245 /**
3246  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3247  * @irq: interrupt number
3248  * @data: pointer to a q_vector
3249  *
3250  * This is the handler used for all MSI/Legacy interrupts, and deals
3251  * with both queue and non-queue interrupts.  This is also used in
3252  * MSIX mode to handle the non-queue interrupts.
3253  **/
3254 static irqreturn_t i40e_intr(int irq, void *data)
3255 {
3256         struct i40e_pf *pf = (struct i40e_pf *)data;
3257         struct i40e_hw *hw = &pf->hw;
3258         irqreturn_t ret = IRQ_NONE;
3259         u32 icr0, icr0_remaining;
3260         u32 val, ena_mask;
3261
3262         icr0 = rd32(hw, I40E_PFINT_ICR0);
3263         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3264
3265         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3266         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3267                 goto enable_intr;
3268
3269         /* if interrupt but no bits showing, must be SWINT */
3270         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3271             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3272                 pf->sw_int_count++;
3273
3274         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3275             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3276                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3277                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3278                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3279         }
3280
3281         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3282         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3283
3284                 /* temporarily disable queue cause for NAPI processing */
3285                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3286                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3287                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3288
3289                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3290                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3291                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3292
3293                 if (!test_bit(__I40E_DOWN, &pf->state))
3294                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3295         }
3296
3297         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3298                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3299                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3300         }
3301
3302         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3303                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3304                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3305         }
3306
3307         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3308                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3309                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3310         }
3311
3312         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3313                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3314                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3315                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3316                 val = rd32(hw, I40E_GLGEN_RSTAT);
3317                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3318                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3319                 if (val == I40E_RESET_CORER) {
3320                         pf->corer_count++;
3321                 } else if (val == I40E_RESET_GLOBR) {
3322                         pf->globr_count++;
3323                 } else if (val == I40E_RESET_EMPR) {
3324                         pf->empr_count++;
3325                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3326                 }
3327         }
3328
3329         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3330                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3331                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3332                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3333                          rd32(hw, I40E_PFHMC_ERRORINFO),
3334                          rd32(hw, I40E_PFHMC_ERRORDATA));
3335         }
3336
3337         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3338                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3339
3340                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3341                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3342                         i40e_ptp_tx_hwtstamp(pf);
3343                 }
3344         }
3345
3346         /* If a critical error is pending we have no choice but to reset the
3347          * device.
3348          * Report and mask out any remaining unexpected interrupts.
3349          */
3350         icr0_remaining = icr0 & ena_mask;
3351         if (icr0_remaining) {
3352                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3353                          icr0_remaining);
3354                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3355                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3356                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3357                         dev_info(&pf->pdev->dev, "device will be reset\n");
3358                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3359                         i40e_service_event_schedule(pf);
3360                 }
3361                 ena_mask &= ~icr0_remaining;
3362         }
3363         ret = IRQ_HANDLED;
3364
3365 enable_intr:
3366         /* re-enable interrupt causes */
3367         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3368         if (!test_bit(__I40E_DOWN, &pf->state)) {
3369                 i40e_service_event_schedule(pf);
3370                 i40e_irq_dynamic_enable_icr0(pf);
3371         }
3372
3373         return ret;
3374 }
3375
3376 /**
3377  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3378  * @tx_ring:  tx ring to clean
3379  * @budget:   how many cleans we're allowed
3380  *
3381  * Returns true if there's any budget left (e.g. the clean is finished)
3382  **/
3383 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3384 {
3385         struct i40e_vsi *vsi = tx_ring->vsi;
3386         u16 i = tx_ring->next_to_clean;
3387         struct i40e_tx_buffer *tx_buf;
3388         struct i40e_tx_desc *tx_desc;
3389
3390         tx_buf = &tx_ring->tx_bi[i];
3391         tx_desc = I40E_TX_DESC(tx_ring, i);
3392         i -= tx_ring->count;
3393
3394         do {
3395                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3396
3397                 /* if next_to_watch is not set then there is no work pending */
3398                 if (!eop_desc)
3399                         break;
3400
3401                 /* prevent any other reads prior to eop_desc */
3402                 read_barrier_depends();
3403
3404                 /* if the descriptor isn't done, no work yet to do */
3405                 if (!(eop_desc->cmd_type_offset_bsz &
3406                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3407                         break;
3408
3409                 /* clear next_to_watch to prevent false hangs */
3410                 tx_buf->next_to_watch = NULL;
3411
3412                 tx_desc->buffer_addr = 0;
3413                 tx_desc->cmd_type_offset_bsz = 0;
3414                 /* move past filter desc */
3415                 tx_buf++;
3416                 tx_desc++;
3417                 i++;
3418                 if (unlikely(!i)) {
3419                         i -= tx_ring->count;
3420                         tx_buf = tx_ring->tx_bi;
3421                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3422                 }
3423                 /* unmap skb header data */
3424                 dma_unmap_single(tx_ring->dev,
3425                                  dma_unmap_addr(tx_buf, dma),
3426                                  dma_unmap_len(tx_buf, len),
3427                                  DMA_TO_DEVICE);
3428                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3429                         kfree(tx_buf->raw_buf);
3430
3431                 tx_buf->raw_buf = NULL;
3432                 tx_buf->tx_flags = 0;
3433                 tx_buf->next_to_watch = NULL;
3434                 dma_unmap_len_set(tx_buf, len, 0);
3435                 tx_desc->buffer_addr = 0;
3436                 tx_desc->cmd_type_offset_bsz = 0;
3437
3438                 /* move us past the eop_desc for start of next FD desc */
3439                 tx_buf++;
3440                 tx_desc++;
3441                 i++;
3442                 if (unlikely(!i)) {
3443                         i -= tx_ring->count;
3444                         tx_buf = tx_ring->tx_bi;
3445                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3446                 }
3447
3448                 /* update budget accounting */
3449                 budget--;
3450         } while (likely(budget));
3451
3452         i += tx_ring->count;
3453         tx_ring->next_to_clean = i;
3454
3455         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3456                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3457         }
3458         return budget > 0;
3459 }
3460
3461 /**
3462  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3463  * @irq: interrupt number
3464  * @data: pointer to a q_vector
3465  **/
3466 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3467 {
3468         struct i40e_q_vector *q_vector = data;
3469         struct i40e_vsi *vsi;
3470
3471         if (!q_vector->tx.ring)
3472                 return IRQ_HANDLED;
3473
3474         vsi = q_vector->tx.ring->vsi;
3475         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3476
3477         return IRQ_HANDLED;
3478 }
3479
3480 /**
3481  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3482  * @vsi: the VSI being configured
3483  * @v_idx: vector index
3484  * @qp_idx: queue pair index
3485  **/
3486 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3487 {
3488         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3489         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3490         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3491
3492         tx_ring->q_vector = q_vector;
3493         tx_ring->next = q_vector->tx.ring;
3494         q_vector->tx.ring = tx_ring;
3495         q_vector->tx.count++;
3496
3497         rx_ring->q_vector = q_vector;
3498         rx_ring->next = q_vector->rx.ring;
3499         q_vector->rx.ring = rx_ring;
3500         q_vector->rx.count++;
3501 }
3502
3503 /**
3504  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3505  * @vsi: the VSI being configured
3506  *
3507  * This function maps descriptor rings to the queue-specific vectors
3508  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3509  * one vector per queue pair, but on a constrained vector budget, we
3510  * group the queue pairs as "efficiently" as possible.
3511  **/
3512 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3513 {
3514         int qp_remaining = vsi->num_queue_pairs;
3515         int q_vectors = vsi->num_q_vectors;
3516         int num_ringpairs;
3517         int v_start = 0;
3518         int qp_idx = 0;
3519
3520         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3521          * group them so there are multiple queues per vector.
3522          * It is also important to go through all the vectors available to be
3523          * sure that if we don't use all the vectors, that the remaining vectors
3524          * are cleared. This is especially important when decreasing the
3525          * number of queues in use.
3526          */
3527         for (; v_start < q_vectors; v_start++) {
3528                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3529
3530                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3531
3532                 q_vector->num_ringpairs = num_ringpairs;
3533
3534                 q_vector->rx.count = 0;
3535                 q_vector->tx.count = 0;
3536                 q_vector->rx.ring = NULL;
3537                 q_vector->tx.ring = NULL;
3538
3539                 while (num_ringpairs--) {
3540                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3541                         qp_idx++;
3542                         qp_remaining--;
3543                 }
3544         }
3545 }
3546
3547 /**
3548  * i40e_vsi_request_irq - Request IRQ from the OS
3549  * @vsi: the VSI being configured
3550  * @basename: name for the vector
3551  **/
3552 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3553 {
3554         struct i40e_pf *pf = vsi->back;
3555         int err;
3556
3557         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3558                 err = i40e_vsi_request_irq_msix(vsi, basename);
3559         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3560                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3561                                   pf->int_name, pf);
3562         else
3563                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3564                                   pf->int_name, pf);
3565
3566         if (err)
3567                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3568
3569         return err;
3570 }
3571
3572 #ifdef CONFIG_NET_POLL_CONTROLLER
3573 /**
3574  * i40e_netpoll - A Polling 'interrupt'handler
3575  * @netdev: network interface device structure
3576  *
3577  * This is used by netconsole to send skbs without having to re-enable
3578  * interrupts.  It's not called while the normal interrupt routine is executing.
3579  **/
3580 #ifdef I40E_FCOE
3581 void i40e_netpoll(struct net_device *netdev)
3582 #else
3583 static void i40e_netpoll(struct net_device *netdev)
3584 #endif
3585 {
3586         struct i40e_netdev_priv *np = netdev_priv(netdev);
3587         struct i40e_vsi *vsi = np->vsi;
3588         struct i40e_pf *pf = vsi->back;
3589         int i;
3590
3591         /* if interface is down do nothing */
3592         if (test_bit(__I40E_DOWN, &vsi->state))
3593                 return;
3594
3595         pf->flags |= I40E_FLAG_IN_NETPOLL;
3596         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3597                 for (i = 0; i < vsi->num_q_vectors; i++)
3598                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3599         } else {
3600                 i40e_intr(pf->pdev->irq, netdev);
3601         }
3602         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3603 }
3604 #endif
3605
3606 /**
3607  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3608  * @pf: the PF being configured
3609  * @pf_q: the PF queue
3610  * @enable: enable or disable state of the queue
3611  *
3612  * This routine will wait for the given Tx queue of the PF to reach the
3613  * enabled or disabled state.
3614  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3615  * multiple retries; else will return 0 in case of success.
3616  **/
3617 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3618 {
3619         int i;
3620         u32 tx_reg;
3621
3622         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3623                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3624                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3625                         break;
3626
3627                 usleep_range(10, 20);
3628         }
3629         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3630                 return -ETIMEDOUT;
3631
3632         return 0;
3633 }
3634
3635 /**
3636  * i40e_vsi_control_tx - Start or stop a VSI's rings
3637  * @vsi: the VSI being configured
3638  * @enable: start or stop the rings
3639  **/
3640 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3641 {
3642         struct i40e_pf *pf = vsi->back;
3643         struct i40e_hw *hw = &pf->hw;
3644         int i, j, pf_q, ret = 0;
3645         u32 tx_reg;
3646
3647         pf_q = vsi->base_queue;
3648         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3649
3650                 /* warn the TX unit of coming changes */
3651                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3652                 if (!enable)
3653                         usleep_range(10, 20);
3654
3655                 for (j = 0; j < 50; j++) {
3656                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3657                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3658                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3659                                 break;
3660                         usleep_range(1000, 2000);
3661                 }
3662                 /* Skip if the queue is already in the requested state */
3663                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3664                         continue;
3665
3666                 /* turn on/off the queue */
3667                 if (enable) {
3668                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3669                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3670                 } else {
3671                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3672                 }
3673
3674                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3675                 /* No waiting for the Tx queue to disable */
3676                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3677                         continue;
3678
3679                 /* wait for the change to finish */
3680                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3681                 if (ret) {
3682                         dev_info(&pf->pdev->dev,
3683                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3684                                  __func__, vsi->seid, pf_q,
3685                                  (enable ? "en" : "dis"));
3686                         break;
3687                 }
3688         }
3689
3690         if (hw->revision_id == 0)
3691                 mdelay(50);
3692         return ret;
3693 }
3694
3695 /**
3696  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3697  * @pf: the PF being configured
3698  * @pf_q: the PF queue
3699  * @enable: enable or disable state of the queue
3700  *
3701  * This routine will wait for the given Rx queue of the PF to reach the
3702  * enabled or disabled state.
3703  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3704  * multiple retries; else will return 0 in case of success.
3705  **/
3706 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3707 {
3708         int i;
3709         u32 rx_reg;
3710
3711         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3712                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3713                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3714                         break;
3715
3716                 usleep_range(10, 20);
3717         }
3718         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3719                 return -ETIMEDOUT;
3720
3721         return 0;
3722 }
3723
3724 /**
3725  * i40e_vsi_control_rx - Start or stop a VSI's rings
3726  * @vsi: the VSI being configured
3727  * @enable: start or stop the rings
3728  **/
3729 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3730 {
3731         struct i40e_pf *pf = vsi->back;
3732         struct i40e_hw *hw = &pf->hw;
3733         int i, j, pf_q, ret = 0;
3734         u32 rx_reg;
3735
3736         pf_q = vsi->base_queue;
3737         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3738                 for (j = 0; j < 50; j++) {
3739                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3740                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3741                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3742                                 break;
3743                         usleep_range(1000, 2000);
3744                 }
3745
3746                 /* Skip if the queue is already in the requested state */
3747                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3748                         continue;
3749
3750                 /* turn on/off the queue */
3751                 if (enable)
3752                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3753                 else
3754                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3755                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3756
3757                 /* wait for the change to finish */
3758                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3759                 if (ret) {
3760                         dev_info(&pf->pdev->dev,
3761                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3762                                  __func__, vsi->seid, pf_q,
3763                                  (enable ? "en" : "dis"));
3764                         break;
3765                 }
3766         }
3767
3768         return ret;
3769 }
3770
3771 /**
3772  * i40e_vsi_control_rings - Start or stop a VSI's rings
3773  * @vsi: the VSI being configured
3774  * @enable: start or stop the rings
3775  **/
3776 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3777 {
3778         int ret = 0;
3779
3780         /* do rx first for enable and last for disable */
3781         if (request) {
3782                 ret = i40e_vsi_control_rx(vsi, request);
3783                 if (ret)
3784                         return ret;
3785                 ret = i40e_vsi_control_tx(vsi, request);
3786         } else {
3787                 /* Ignore return value, we need to shutdown whatever we can */
3788                 i40e_vsi_control_tx(vsi, request);
3789                 i40e_vsi_control_rx(vsi, request);
3790         }
3791
3792         return ret;
3793 }
3794
3795 /**
3796  * i40e_vsi_free_irq - Free the irq association with the OS
3797  * @vsi: the VSI being configured
3798  **/
3799 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3800 {
3801         struct i40e_pf *pf = vsi->back;
3802         struct i40e_hw *hw = &pf->hw;
3803         int base = vsi->base_vector;
3804         u32 val, qp;
3805         int i;
3806
3807         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3808                 if (!vsi->q_vectors)
3809                         return;
3810
3811                 if (!vsi->irqs_ready)
3812                         return;
3813
3814                 vsi->irqs_ready = false;
3815                 for (i = 0; i < vsi->num_q_vectors; i++) {
3816                         u16 vector = i + base;
3817
3818                         /* free only the irqs that were actually requested */
3819                         if (!vsi->q_vectors[i] ||
3820                             !vsi->q_vectors[i]->num_ringpairs)
3821                                 continue;
3822
3823                         /* clear the affinity_mask in the IRQ descriptor */
3824                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3825                                               NULL);
3826                         free_irq(pf->msix_entries[vector].vector,
3827                                  vsi->q_vectors[i]);
3828
3829                         /* Tear down the interrupt queue link list
3830                          *
3831                          * We know that they come in pairs and always
3832                          * the Rx first, then the Tx.  To clear the
3833                          * link list, stick the EOL value into the
3834                          * next_q field of the registers.
3835                          */
3836                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3837                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3838                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3839                         val |= I40E_QUEUE_END_OF_LIST
3840                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3841                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3842
3843                         while (qp != I40E_QUEUE_END_OF_LIST) {
3844                                 u32 next;
3845
3846                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3847
3848                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3849                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3850                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3851                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3852
3853                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3854                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3855
3856                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3857
3858                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3859
3860                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3861                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3862
3863                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3864                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3865                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3866                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3867
3868                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3869                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3870
3871                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3872                                 qp = next;
3873                         }
3874                 }
3875         } else {
3876                 free_irq(pf->pdev->irq, pf);
3877
3878                 val = rd32(hw, I40E_PFINT_LNKLST0);
3879                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3880                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3881                 val |= I40E_QUEUE_END_OF_LIST
3882                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3883                 wr32(hw, I40E_PFINT_LNKLST0, val);
3884
3885                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3886                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3887                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3888                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3889                          I40E_QINT_RQCTL_INTEVENT_MASK);
3890
3891                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3892                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3893
3894                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3895
3896                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3897
3898                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3899                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3900                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3901                          I40E_QINT_TQCTL_INTEVENT_MASK);
3902
3903                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3904                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3905
3906                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3907         }
3908 }
3909
3910 /**
3911  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3912  * @vsi: the VSI being configured
3913  * @v_idx: Index of vector to be freed
3914  *
3915  * This function frees the memory allocated to the q_vector.  In addition if
3916  * NAPI is enabled it will delete any references to the NAPI struct prior
3917  * to freeing the q_vector.
3918  **/
3919 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3920 {
3921         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3922         struct i40e_ring *ring;
3923
3924         if (!q_vector)
3925                 return;
3926
3927         /* disassociate q_vector from rings */
3928         i40e_for_each_ring(ring, q_vector->tx)
3929                 ring->q_vector = NULL;
3930
3931         i40e_for_each_ring(ring, q_vector->rx)
3932                 ring->q_vector = NULL;
3933
3934         /* only VSI w/ an associated netdev is set up w/ NAPI */
3935         if (vsi->netdev)
3936                 netif_napi_del(&q_vector->napi);
3937
3938         vsi->q_vectors[v_idx] = NULL;
3939
3940         kfree_rcu(q_vector, rcu);
3941 }
3942
3943 /**
3944  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3945  * @vsi: the VSI being un-configured
3946  *
3947  * This frees the memory allocated to the q_vectors and
3948  * deletes references to the NAPI struct.
3949  **/
3950 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3951 {
3952         int v_idx;
3953
3954         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3955                 i40e_free_q_vector(vsi, v_idx);
3956 }
3957
3958 /**
3959  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3960  * @pf: board private structure
3961  **/
3962 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3963 {
3964         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3965         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3966                 pci_disable_msix(pf->pdev);
3967                 kfree(pf->msix_entries);
3968                 pf->msix_entries = NULL;
3969                 kfree(pf->irq_pile);
3970                 pf->irq_pile = NULL;
3971         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3972                 pci_disable_msi(pf->pdev);
3973         }
3974         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3975 }
3976
3977 /**
3978  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3979  * @pf: board private structure
3980  *
3981  * We go through and clear interrupt specific resources and reset the structure
3982  * to pre-load conditions
3983  **/
3984 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3985 {
3986         int i;
3987
3988         i40e_stop_misc_vector(pf);
3989         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3990                 synchronize_irq(pf->msix_entries[0].vector);
3991                 free_irq(pf->msix_entries[0].vector, pf);
3992         }
3993
3994         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3995         for (i = 0; i < pf->num_alloc_vsi; i++)
3996                 if (pf->vsi[i])
3997                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3998         i40e_reset_interrupt_capability(pf);
3999 }
4000
4001 /**
4002  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4003  * @vsi: the VSI being configured
4004  **/
4005 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4006 {
4007         int q_idx;
4008
4009         if (!vsi->netdev)
4010                 return;
4011
4012         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4013                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4014 }
4015
4016 /**
4017  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4018  * @vsi: the VSI being configured
4019  **/
4020 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4021 {
4022         int q_idx;
4023
4024         if (!vsi->netdev)
4025                 return;
4026
4027         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4028                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4029 }
4030
4031 /**
4032  * i40e_vsi_close - Shut down a VSI
4033  * @vsi: the vsi to be quelled
4034  **/
4035 static void i40e_vsi_close(struct i40e_vsi *vsi)
4036 {
4037         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4038                 i40e_down(vsi);
4039         i40e_vsi_free_irq(vsi);
4040         i40e_vsi_free_tx_resources(vsi);
4041         i40e_vsi_free_rx_resources(vsi);
4042         vsi->current_netdev_flags = 0;
4043 }
4044
4045 /**
4046  * i40e_quiesce_vsi - Pause a given VSI
4047  * @vsi: the VSI being paused
4048  **/
4049 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4050 {
4051         if (test_bit(__I40E_DOWN, &vsi->state))
4052                 return;
4053
4054         /* No need to disable FCoE VSI when Tx suspended */
4055         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4056             vsi->type == I40E_VSI_FCOE) {
4057                 dev_dbg(&vsi->back->pdev->dev,
4058                         "%s: VSI seid %d skipping FCoE VSI disable\n",
4059                          __func__, vsi->seid);
4060                 return;
4061         }
4062
4063         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4064         if (vsi->netdev && netif_running(vsi->netdev)) {
4065                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4066         } else {
4067                 i40e_vsi_close(vsi);
4068         }
4069 }
4070
4071 /**
4072  * i40e_unquiesce_vsi - Resume a given VSI
4073  * @vsi: the VSI being resumed
4074  **/
4075 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4076 {
4077         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4078                 return;
4079
4080         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4081         if (vsi->netdev && netif_running(vsi->netdev))
4082                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4083         else
4084                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4085 }
4086
4087 /**
4088  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4089  * @pf: the PF
4090  **/
4091 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4092 {
4093         int v;
4094
4095         for (v = 0; v < pf->num_alloc_vsi; v++) {
4096                 if (pf->vsi[v])
4097                         i40e_quiesce_vsi(pf->vsi[v]);
4098         }
4099 }
4100
4101 /**
4102  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4103  * @pf: the PF
4104  **/
4105 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4106 {
4107         int v;
4108
4109         for (v = 0; v < pf->num_alloc_vsi; v++) {
4110                 if (pf->vsi[v])
4111                         i40e_unquiesce_vsi(pf->vsi[v]);
4112         }
4113 }
4114
4115 #ifdef CONFIG_I40E_DCB
4116 /**
4117  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4118  * @vsi: the VSI being configured
4119  *
4120  * This function waits for the given VSI's Tx queues to be disabled.
4121  **/
4122 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4123 {
4124         struct i40e_pf *pf = vsi->back;
4125         int i, pf_q, ret;
4126
4127         pf_q = vsi->base_queue;
4128         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4129                 /* Check and wait for the disable status of the queue */
4130                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4131                 if (ret) {
4132                         dev_info(&pf->pdev->dev,
4133                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4134                                  __func__, vsi->seid, pf_q);
4135                         return ret;
4136                 }
4137         }
4138
4139         return 0;
4140 }
4141
4142 /**
4143  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4144  * @pf: the PF
4145  *
4146  * This function waits for the Tx queues to be in disabled state for all the
4147  * VSIs that are managed by this PF.
4148  **/
4149 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4150 {
4151         int v, ret = 0;
4152
4153         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4154                 /* No need to wait for FCoE VSI queues */
4155                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4156                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4157                         if (ret)
4158                                 break;
4159                 }
4160         }
4161
4162         return ret;
4163 }
4164
4165 #endif
4166
4167 /**
4168  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4169  * @q_idx: TX queue number
4170  * @vsi: Pointer to VSI struct
4171  *
4172  * This function checks specified queue for given VSI. Detects hung condition.
4173  * Sets hung bit since it is two step process. Before next run of service task
4174  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4175  * hung condition remain unchanged and during subsequent run, this function
4176  * issues SW interrupt to recover from hung condition.
4177  **/
4178 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4179 {
4180         struct i40e_ring *tx_ring = NULL;
4181         struct i40e_pf  *pf;
4182         u32 head, val, tx_pending;
4183         int i;
4184
4185         pf = vsi->back;
4186
4187         /* now that we have an index, find the tx_ring struct */
4188         for (i = 0; i < vsi->num_queue_pairs; i++) {
4189                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4190                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4191                                 tx_ring = vsi->tx_rings[i];
4192                                 break;
4193                         }
4194                 }
4195         }
4196
4197         if (!tx_ring)
4198                 return;
4199
4200         /* Read interrupt register */
4201         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4202                 val = rd32(&pf->hw,
4203                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4204                                                tx_ring->vsi->base_vector - 1));
4205         else
4206                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4207
4208         head = i40e_get_head(tx_ring);
4209
4210         tx_pending = i40e_get_tx_pending(tx_ring);
4211
4212         /* Interrupts are disabled and TX pending is non-zero,
4213          * trigger the SW interrupt (don't wait). Worst case
4214          * there will be one extra interrupt which may result
4215          * into not cleaning any queues because queues are cleaned.
4216          */
4217         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4218                 i40e_force_wb(vsi, tx_ring->q_vector);
4219 }
4220
4221 /**
4222  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4223  * @pf:  pointer to PF struct
4224  *
4225  * LAN VSI has netdev and netdev has TX queues. This function is to check
4226  * each of those TX queues if they are hung, trigger recovery by issuing
4227  * SW interrupt.
4228  **/
4229 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4230 {
4231         struct net_device *netdev;
4232         struct i40e_vsi *vsi;
4233         int i;
4234
4235         /* Only for LAN VSI */
4236         vsi = pf->vsi[pf->lan_vsi];
4237
4238         if (!vsi)
4239                 return;
4240
4241         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4242         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4243             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4244                 return;
4245
4246         /* Make sure type is MAIN VSI */
4247         if (vsi->type != I40E_VSI_MAIN)
4248                 return;
4249
4250         netdev = vsi->netdev;
4251         if (!netdev)
4252                 return;
4253
4254         /* Bail out if netif_carrier is not OK */
4255         if (!netif_carrier_ok(netdev))
4256                 return;
4257
4258         /* Go thru' TX queues for netdev */
4259         for (i = 0; i < netdev->num_tx_queues; i++) {
4260                 struct netdev_queue *q;
4261
4262                 q = netdev_get_tx_queue(netdev, i);
4263                 if (q)
4264                         i40e_detect_recover_hung_queue(i, vsi);
4265         }
4266 }
4267
4268 /**
4269  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4270  * @pf: pointer to PF
4271  *
4272  * Get TC map for ISCSI PF type that will include iSCSI TC
4273  * and LAN TC.
4274  **/
4275 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4276 {
4277         struct i40e_dcb_app_priority_table app;
4278         struct i40e_hw *hw = &pf->hw;
4279         u8 enabled_tc = 1; /* TC0 is always enabled */
4280         u8 tc, i;
4281         /* Get the iSCSI APP TLV */
4282         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4283
4284         for (i = 0; i < dcbcfg->numapps; i++) {
4285                 app = dcbcfg->app[i];
4286                 if (app.selector == I40E_APP_SEL_TCPIP &&
4287                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4288                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4289                         enabled_tc |= BIT_ULL(tc);
4290                         break;
4291                 }
4292         }
4293
4294         return enabled_tc;
4295 }
4296
4297 /**
4298  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4299  * @dcbcfg: the corresponding DCBx configuration structure
4300  *
4301  * Return the number of TCs from given DCBx configuration
4302  **/
4303 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4304 {
4305         u8 num_tc = 0;
4306         int i;
4307
4308         /* Scan the ETS Config Priority Table to find
4309          * traffic class enabled for a given priority
4310          * and use the traffic class index to get the
4311          * number of traffic classes enabled
4312          */
4313         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4314                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4315                         num_tc = dcbcfg->etscfg.prioritytable[i];
4316         }
4317
4318         /* Traffic class index starts from zero so
4319          * increment to return the actual count
4320          */
4321         return num_tc + 1;
4322 }
4323
4324 /**
4325  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4326  * @dcbcfg: the corresponding DCBx configuration structure
4327  *
4328  * Query the current DCB configuration and return the number of
4329  * traffic classes enabled from the given DCBX config
4330  **/
4331 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4332 {
4333         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4334         u8 enabled_tc = 1;
4335         u8 i;
4336
4337         for (i = 0; i < num_tc; i++)
4338                 enabled_tc |= BIT(i);
4339
4340         return enabled_tc;
4341 }
4342
4343 /**
4344  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4345  * @pf: PF being queried
4346  *
4347  * Return number of traffic classes enabled for the given PF
4348  **/
4349 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4350 {
4351         struct i40e_hw *hw = &pf->hw;
4352         u8 i, enabled_tc;
4353         u8 num_tc = 0;
4354         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4355
4356         /* If DCB is not enabled then always in single TC */
4357         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4358                 return 1;
4359
4360         /* SFP mode will be enabled for all TCs on port */
4361         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4362                 return i40e_dcb_get_num_tc(dcbcfg);
4363
4364         /* MFP mode return count of enabled TCs for this PF */
4365         if (pf->hw.func_caps.iscsi)
4366                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4367         else
4368                 return 1; /* Only TC0 */
4369
4370         /* At least have TC0 */
4371         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4372         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4373                 if (enabled_tc & BIT_ULL(i))
4374                         num_tc++;
4375         }
4376         return num_tc;
4377 }
4378
4379 /**
4380  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4381  * @pf: PF being queried
4382  *
4383  * Return a bitmap for first enabled traffic class for this PF.
4384  **/
4385 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4386 {
4387         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4388         u8 i = 0;
4389
4390         if (!enabled_tc)
4391                 return 0x1; /* TC0 */
4392
4393         /* Find the first enabled TC */
4394         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4395                 if (enabled_tc & BIT_ULL(i))
4396                         break;
4397         }
4398
4399         return BIT(i);
4400 }
4401
4402 /**
4403  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4404  * @pf: PF being queried
4405  *
4406  * Return a bitmap for enabled traffic classes for this PF.
4407  **/
4408 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4409 {
4410         /* If DCB is not enabled for this PF then just return default TC */
4411         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4412                 return i40e_pf_get_default_tc(pf);
4413
4414         /* SFP mode we want PF to be enabled for all TCs */
4415         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4416                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4417
4418         /* MFP enabled and iSCSI PF type */
4419         if (pf->hw.func_caps.iscsi)
4420                 return i40e_get_iscsi_tc_map(pf);
4421         else
4422                 return i40e_pf_get_default_tc(pf);
4423 }
4424
4425 /**
4426  * i40e_vsi_get_bw_info - Query VSI BW Information
4427  * @vsi: the VSI being queried
4428  *
4429  * Returns 0 on success, negative value on failure
4430  **/
4431 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4432 {
4433         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4434         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4435         struct i40e_pf *pf = vsi->back;
4436         struct i40e_hw *hw = &pf->hw;
4437         i40e_status ret;
4438         u32 tc_bw_max;
4439         int i;
4440
4441         /* Get the VSI level BW configuration */
4442         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4443         if (ret) {
4444                 dev_info(&pf->pdev->dev,
4445                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4446                          i40e_stat_str(&pf->hw, ret),
4447                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4448                 return -EINVAL;
4449         }
4450
4451         /* Get the VSI level BW configuration per TC */
4452         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4453                                                NULL);
4454         if (ret) {
4455                 dev_info(&pf->pdev->dev,
4456                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4457                          i40e_stat_str(&pf->hw, ret),
4458                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4459                 return -EINVAL;
4460         }
4461
4462         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4463                 dev_info(&pf->pdev->dev,
4464                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4465                          bw_config.tc_valid_bits,
4466                          bw_ets_config.tc_valid_bits);
4467                 /* Still continuing */
4468         }
4469
4470         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4471         vsi->bw_max_quanta = bw_config.max_bw;
4472         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4473                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4474         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4475                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4476                 vsi->bw_ets_limit_credits[i] =
4477                                         le16_to_cpu(bw_ets_config.credits[i]);
4478                 /* 3 bits out of 4 for each TC */
4479                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4480         }
4481
4482         return 0;
4483 }
4484
4485 /**
4486  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4487  * @vsi: the VSI being configured
4488  * @enabled_tc: TC bitmap
4489  * @bw_credits: BW shared credits per TC
4490  *
4491  * Returns 0 on success, negative value on failure
4492  **/
4493 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4494                                        u8 *bw_share)
4495 {
4496         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4497         i40e_status ret;
4498         int i;
4499
4500         bw_data.tc_valid_bits = enabled_tc;
4501         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4502                 bw_data.tc_bw_credits[i] = bw_share[i];
4503
4504         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4505                                        NULL);
4506         if (ret) {
4507                 dev_info(&vsi->back->pdev->dev,
4508                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4509                          vsi->back->hw.aq.asq_last_status);
4510                 return -EINVAL;
4511         }
4512
4513         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4514                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4515
4516         return 0;
4517 }
4518
4519 /**
4520  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4521  * @vsi: the VSI being configured
4522  * @enabled_tc: TC map to be enabled
4523  *
4524  **/
4525 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4526 {
4527         struct net_device *netdev = vsi->netdev;
4528         struct i40e_pf *pf = vsi->back;
4529         struct i40e_hw *hw = &pf->hw;
4530         u8 netdev_tc = 0;
4531         int i;
4532         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4533
4534         if (!netdev)
4535                 return;
4536
4537         if (!enabled_tc) {
4538                 netdev_reset_tc(netdev);
4539                 return;
4540         }
4541
4542         /* Set up actual enabled TCs on the VSI */
4543         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4544                 return;
4545
4546         /* set per TC queues for the VSI */
4547         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4548                 /* Only set TC queues for enabled tcs
4549                  *
4550                  * e.g. For a VSI that has TC0 and TC3 enabled the
4551                  * enabled_tc bitmap would be 0x00001001; the driver
4552                  * will set the numtc for netdev as 2 that will be
4553                  * referenced by the netdev layer as TC 0 and 1.
4554                  */
4555                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4556                         netdev_set_tc_queue(netdev,
4557                                         vsi->tc_config.tc_info[i].netdev_tc,
4558                                         vsi->tc_config.tc_info[i].qcount,
4559                                         vsi->tc_config.tc_info[i].qoffset);
4560         }
4561
4562         /* Assign UP2TC map for the VSI */
4563         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4564                 /* Get the actual TC# for the UP */
4565                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4566                 /* Get the mapped netdev TC# for the UP */
4567                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4568                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4569         }
4570 }
4571
4572 /**
4573  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4574  * @vsi: the VSI being configured
4575  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4576  **/
4577 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4578                                       struct i40e_vsi_context *ctxt)
4579 {
4580         /* copy just the sections touched not the entire info
4581          * since not all sections are valid as returned by
4582          * update vsi params
4583          */
4584         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4585         memcpy(&vsi->info.queue_mapping,
4586                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4587         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4588                sizeof(vsi->info.tc_mapping));
4589 }
4590
4591 /**
4592  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4593  * @vsi: VSI to be configured
4594  * @enabled_tc: TC bitmap
4595  *
4596  * This configures a particular VSI for TCs that are mapped to the
4597  * given TC bitmap. It uses default bandwidth share for TCs across
4598  * VSIs to configure TC for a particular VSI.
4599  *
4600  * NOTE:
4601  * It is expected that the VSI queues have been quisced before calling
4602  * this function.
4603  **/
4604 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4605 {
4606         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4607         struct i40e_vsi_context ctxt;
4608         int ret = 0;
4609         int i;
4610
4611         /* Check if enabled_tc is same as existing or new TCs */
4612         if (vsi->tc_config.enabled_tc == enabled_tc)
4613                 return ret;
4614
4615         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4616         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4617                 if (enabled_tc & BIT_ULL(i))
4618                         bw_share[i] = 1;
4619         }
4620
4621         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4622         if (ret) {
4623                 dev_info(&vsi->back->pdev->dev,
4624                          "Failed configuring TC map %d for VSI %d\n",
4625                          enabled_tc, vsi->seid);
4626                 goto out;
4627         }
4628
4629         /* Update Queue Pairs Mapping for currently enabled UPs */
4630         ctxt.seid = vsi->seid;
4631         ctxt.pf_num = vsi->back->hw.pf_id;
4632         ctxt.vf_num = 0;
4633         ctxt.uplink_seid = vsi->uplink_seid;
4634         ctxt.info = vsi->info;
4635         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4636
4637         /* Update the VSI after updating the VSI queue-mapping information */
4638         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4639         if (ret) {
4640                 dev_info(&vsi->back->pdev->dev,
4641                          "Update vsi tc config failed, err %s aq_err %s\n",
4642                          i40e_stat_str(&vsi->back->hw, ret),
4643                          i40e_aq_str(&vsi->back->hw,
4644                                      vsi->back->hw.aq.asq_last_status));
4645                 goto out;
4646         }
4647         /* update the local VSI info with updated queue map */
4648         i40e_vsi_update_queue_map(vsi, &ctxt);
4649         vsi->info.valid_sections = 0;
4650
4651         /* Update current VSI BW information */
4652         ret = i40e_vsi_get_bw_info(vsi);
4653         if (ret) {
4654                 dev_info(&vsi->back->pdev->dev,
4655                          "Failed updating vsi bw info, err %s aq_err %s\n",
4656                          i40e_stat_str(&vsi->back->hw, ret),
4657                          i40e_aq_str(&vsi->back->hw,
4658                                      vsi->back->hw.aq.asq_last_status));
4659                 goto out;
4660         }
4661
4662         /* Update the netdev TC setup */
4663         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4664 out:
4665         return ret;
4666 }
4667
4668 /**
4669  * i40e_veb_config_tc - Configure TCs for given VEB
4670  * @veb: given VEB
4671  * @enabled_tc: TC bitmap
4672  *
4673  * Configures given TC bitmap for VEB (switching) element
4674  **/
4675 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4676 {
4677         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4678         struct i40e_pf *pf = veb->pf;
4679         int ret = 0;
4680         int i;
4681
4682         /* No TCs or already enabled TCs just return */
4683         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4684                 return ret;
4685
4686         bw_data.tc_valid_bits = enabled_tc;
4687         /* bw_data.absolute_credits is not set (relative) */
4688
4689         /* Enable ETS TCs with equal BW Share for now */
4690         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4691                 if (enabled_tc & BIT_ULL(i))
4692                         bw_data.tc_bw_share_credits[i] = 1;
4693         }
4694
4695         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4696                                                    &bw_data, NULL);
4697         if (ret) {
4698                 dev_info(&pf->pdev->dev,
4699                          "VEB bw config failed, err %s aq_err %s\n",
4700                          i40e_stat_str(&pf->hw, ret),
4701                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4702                 goto out;
4703         }
4704
4705         /* Update the BW information */
4706         ret = i40e_veb_get_bw_info(veb);
4707         if (ret) {
4708                 dev_info(&pf->pdev->dev,
4709                          "Failed getting veb bw config, err %s aq_err %s\n",
4710                          i40e_stat_str(&pf->hw, ret),
4711                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4712         }
4713
4714 out:
4715         return ret;
4716 }
4717
4718 #ifdef CONFIG_I40E_DCB
4719 /**
4720  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4721  * @pf: PF struct
4722  *
4723  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4724  * the caller would've quiesce all the VSIs before calling
4725  * this function
4726  **/
4727 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4728 {
4729         u8 tc_map = 0;
4730         int ret;
4731         u8 v;
4732
4733         /* Enable the TCs available on PF to all VEBs */
4734         tc_map = i40e_pf_get_tc_map(pf);
4735         for (v = 0; v < I40E_MAX_VEB; v++) {
4736                 if (!pf->veb[v])
4737                         continue;
4738                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4739                 if (ret) {
4740                         dev_info(&pf->pdev->dev,
4741                                  "Failed configuring TC for VEB seid=%d\n",
4742                                  pf->veb[v]->seid);
4743                         /* Will try to configure as many components */
4744                 }
4745         }
4746
4747         /* Update each VSI */
4748         for (v = 0; v < pf->num_alloc_vsi; v++) {
4749                 if (!pf->vsi[v])
4750                         continue;
4751
4752                 /* - Enable all TCs for the LAN VSI
4753 #ifdef I40E_FCOE
4754                  * - For FCoE VSI only enable the TC configured
4755                  *   as per the APP TLV
4756 #endif
4757                  * - For all others keep them at TC0 for now
4758                  */
4759                 if (v == pf->lan_vsi)
4760                         tc_map = i40e_pf_get_tc_map(pf);
4761                 else
4762                         tc_map = i40e_pf_get_default_tc(pf);
4763 #ifdef I40E_FCOE
4764                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4765                         tc_map = i40e_get_fcoe_tc_map(pf);
4766 #endif /* #ifdef I40E_FCOE */
4767
4768                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4769                 if (ret) {
4770                         dev_info(&pf->pdev->dev,
4771                                  "Failed configuring TC for VSI seid=%d\n",
4772                                  pf->vsi[v]->seid);
4773                         /* Will try to configure as many components */
4774                 } else {
4775                         /* Re-configure VSI vectors based on updated TC map */
4776                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4777                         if (pf->vsi[v]->netdev)
4778                                 i40e_dcbnl_set_all(pf->vsi[v]);
4779                 }
4780         }
4781 }
4782
4783 /**
4784  * i40e_resume_port_tx - Resume port Tx
4785  * @pf: PF struct
4786  *
4787  * Resume a port's Tx and issue a PF reset in case of failure to
4788  * resume.
4789  **/
4790 static int i40e_resume_port_tx(struct i40e_pf *pf)
4791 {
4792         struct i40e_hw *hw = &pf->hw;
4793         int ret;
4794
4795         ret = i40e_aq_resume_port_tx(hw, NULL);
4796         if (ret) {
4797                 dev_info(&pf->pdev->dev,
4798                          "Resume Port Tx failed, err %s aq_err %s\n",
4799                           i40e_stat_str(&pf->hw, ret),
4800                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4801                 /* Schedule PF reset to recover */
4802                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4803                 i40e_service_event_schedule(pf);
4804         }
4805
4806         return ret;
4807 }
4808
4809 /**
4810  * i40e_init_pf_dcb - Initialize DCB configuration
4811  * @pf: PF being configured
4812  *
4813  * Query the current DCB configuration and cache it
4814  * in the hardware structure
4815  **/
4816 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4817 {
4818         struct i40e_hw *hw = &pf->hw;
4819         int err = 0;
4820
4821         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4822         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4823             (pf->hw.aq.fw_maj_ver < 4))
4824                 goto out;
4825
4826         /* Get the initial DCB configuration */
4827         err = i40e_init_dcb(hw);
4828         if (!err) {
4829                 /* Device/Function is not DCBX capable */
4830                 if ((!hw->func_caps.dcb) ||
4831                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4832                         dev_info(&pf->pdev->dev,
4833                                  "DCBX offload is not supported or is disabled for this PF.\n");
4834
4835                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4836                                 goto out;
4837
4838                 } else {
4839                         /* When status is not DISABLED then DCBX in FW */
4840                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4841                                        DCB_CAP_DCBX_VER_IEEE;
4842
4843                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4844                         /* Enable DCB tagging only when more than one TC */
4845                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4846                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4847                         dev_dbg(&pf->pdev->dev,
4848                                 "DCBX offload is supported for this PF.\n");
4849                 }
4850         } else {
4851                 dev_info(&pf->pdev->dev,
4852                          "Query for DCB configuration failed, err %s aq_err %s\n",
4853                          i40e_stat_str(&pf->hw, err),
4854                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4855         }
4856
4857 out:
4858         return err;
4859 }
4860 #endif /* CONFIG_I40E_DCB */
4861 #define SPEED_SIZE 14
4862 #define FC_SIZE 8
4863 /**
4864  * i40e_print_link_message - print link up or down
4865  * @vsi: the VSI for which link needs a message
4866  */
4867 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4868 {
4869         char speed[SPEED_SIZE] = "Unknown";
4870         char fc[FC_SIZE] = "RX/TX";
4871
4872         if (!isup) {
4873                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4874                 return;
4875         }
4876
4877         /* Warn user if link speed on NPAR enabled partition is not at
4878          * least 10GB
4879          */
4880         if (vsi->back->hw.func_caps.npar_enable &&
4881             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4882              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4883                 netdev_warn(vsi->netdev,
4884                             "The partition detected link speed that is less than 10Gbps\n");
4885
4886         switch (vsi->back->hw.phy.link_info.link_speed) {
4887         case I40E_LINK_SPEED_40GB:
4888                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4889                 break;
4890         case I40E_LINK_SPEED_20GB:
4891                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4892                 break;
4893         case I40E_LINK_SPEED_10GB:
4894                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4895                 break;
4896         case I40E_LINK_SPEED_1GB:
4897                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4898                 break;
4899         case I40E_LINK_SPEED_100MB:
4900                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4901                 break;
4902         default:
4903                 break;
4904         }
4905
4906         switch (vsi->back->hw.fc.current_mode) {
4907         case I40E_FC_FULL:
4908                 strlcpy(fc, "RX/TX", FC_SIZE);
4909                 break;
4910         case I40E_FC_TX_PAUSE:
4911                 strlcpy(fc, "TX", FC_SIZE);
4912                 break;
4913         case I40E_FC_RX_PAUSE:
4914                 strlcpy(fc, "RX", FC_SIZE);
4915                 break;
4916         default:
4917                 strlcpy(fc, "None", FC_SIZE);
4918                 break;
4919         }
4920
4921         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4922                     speed, fc);
4923 }
4924
4925 /**
4926  * i40e_up_complete - Finish the last steps of bringing up a connection
4927  * @vsi: the VSI being configured
4928  **/
4929 static int i40e_up_complete(struct i40e_vsi *vsi)
4930 {
4931         struct i40e_pf *pf = vsi->back;
4932         int err;
4933
4934         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4935                 i40e_vsi_configure_msix(vsi);
4936         else
4937                 i40e_configure_msi_and_legacy(vsi);
4938
4939         /* start rings */
4940         err = i40e_vsi_control_rings(vsi, true);
4941         if (err)
4942                 return err;
4943
4944         clear_bit(__I40E_DOWN, &vsi->state);
4945         i40e_napi_enable_all(vsi);
4946         i40e_vsi_enable_irq(vsi);
4947
4948         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4949             (vsi->netdev)) {
4950                 i40e_print_link_message(vsi, true);
4951                 netif_tx_start_all_queues(vsi->netdev);
4952                 netif_carrier_on(vsi->netdev);
4953         } else if (vsi->netdev) {
4954                 i40e_print_link_message(vsi, false);
4955                 /* need to check for qualified module here*/
4956                 if ((pf->hw.phy.link_info.link_info &
4957                         I40E_AQ_MEDIA_AVAILABLE) &&
4958                     (!(pf->hw.phy.link_info.an_info &
4959                         I40E_AQ_QUALIFIED_MODULE)))
4960                         netdev_err(vsi->netdev,
4961                                    "the driver failed to link because an unqualified module was detected.");
4962         }
4963
4964         /* replay FDIR SB filters */
4965         if (vsi->type == I40E_VSI_FDIR) {
4966                 /* reset fd counters */
4967                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4968                 if (pf->fd_tcp_rule > 0) {
4969                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4970                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4971                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4972                         pf->fd_tcp_rule = 0;
4973                 }
4974                 i40e_fdir_filter_restore(vsi);
4975         }
4976         i40e_service_event_schedule(pf);
4977
4978         return 0;
4979 }
4980
4981 /**
4982  * i40e_vsi_reinit_locked - Reset the VSI
4983  * @vsi: the VSI being configured
4984  *
4985  * Rebuild the ring structs after some configuration
4986  * has changed, e.g. MTU size.
4987  **/
4988 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4989 {
4990         struct i40e_pf *pf = vsi->back;
4991
4992         WARN_ON(in_interrupt());
4993         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4994                 usleep_range(1000, 2000);
4995         i40e_down(vsi);
4996
4997         /* Give a VF some time to respond to the reset.  The
4998          * two second wait is based upon the watchdog cycle in
4999          * the VF driver.
5000          */
5001         if (vsi->type == I40E_VSI_SRIOV)
5002                 msleep(2000);
5003         i40e_up(vsi);
5004         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5005 }
5006
5007 /**
5008  * i40e_up - Bring the connection back up after being down
5009  * @vsi: the VSI being configured
5010  **/
5011 int i40e_up(struct i40e_vsi *vsi)
5012 {
5013         int err;
5014
5015         err = i40e_vsi_configure(vsi);
5016         if (!err)
5017                 err = i40e_up_complete(vsi);
5018
5019         return err;
5020 }
5021
5022 /**
5023  * i40e_down - Shutdown the connection processing
5024  * @vsi: the VSI being stopped
5025  **/
5026 void i40e_down(struct i40e_vsi *vsi)
5027 {
5028         int i;
5029
5030         /* It is assumed that the caller of this function
5031          * sets the vsi->state __I40E_DOWN bit.
5032          */
5033         if (vsi->netdev) {
5034                 netif_carrier_off(vsi->netdev);
5035                 netif_tx_disable(vsi->netdev);
5036         }
5037         i40e_vsi_disable_irq(vsi);
5038         i40e_vsi_control_rings(vsi, false);
5039         i40e_napi_disable_all(vsi);
5040
5041         for (i = 0; i < vsi->num_queue_pairs; i++) {
5042                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5043                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5044         }
5045 }
5046
5047 /**
5048  * i40e_setup_tc - configure multiple traffic classes
5049  * @netdev: net device to configure
5050  * @tc: number of traffic classes to enable
5051  **/
5052 #ifdef I40E_FCOE
5053 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5054 #else
5055 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5056 #endif
5057 {
5058         struct i40e_netdev_priv *np = netdev_priv(netdev);
5059         struct i40e_vsi *vsi = np->vsi;
5060         struct i40e_pf *pf = vsi->back;
5061         u8 enabled_tc = 0;
5062         int ret = -EINVAL;
5063         int i;
5064
5065         /* Check if DCB enabled to continue */
5066         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5067                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5068                 goto exit;
5069         }
5070
5071         /* Check if MFP enabled */
5072         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5073                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5074                 goto exit;
5075         }
5076
5077         /* Check whether tc count is within enabled limit */
5078         if (tc > i40e_pf_get_num_tc(pf)) {
5079                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5080                 goto exit;
5081         }
5082
5083         /* Generate TC map for number of tc requested */
5084         for (i = 0; i < tc; i++)
5085                 enabled_tc |= BIT_ULL(i);
5086
5087         /* Requesting same TC configuration as already enabled */
5088         if (enabled_tc == vsi->tc_config.enabled_tc)
5089                 return 0;
5090
5091         /* Quiesce VSI queues */
5092         i40e_quiesce_vsi(vsi);
5093
5094         /* Configure VSI for enabled TCs */
5095         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5096         if (ret) {
5097                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5098                             vsi->seid);
5099                 goto exit;
5100         }
5101
5102         /* Unquiesce VSI */
5103         i40e_unquiesce_vsi(vsi);
5104
5105 exit:
5106         return ret;
5107 }
5108
5109 /**
5110  * i40e_open - Called when a network interface is made active
5111  * @netdev: network interface device structure
5112  *
5113  * The open entry point is called when a network interface is made
5114  * active by the system (IFF_UP).  At this point all resources needed
5115  * for transmit and receive operations are allocated, the interrupt
5116  * handler is registered with the OS, the netdev watchdog subtask is
5117  * enabled, and the stack is notified that the interface is ready.
5118  *
5119  * Returns 0 on success, negative value on failure
5120  **/
5121 int i40e_open(struct net_device *netdev)
5122 {
5123         struct i40e_netdev_priv *np = netdev_priv(netdev);
5124         struct i40e_vsi *vsi = np->vsi;
5125         struct i40e_pf *pf = vsi->back;
5126         int err;
5127
5128         /* disallow open during test or if eeprom is broken */
5129         if (test_bit(__I40E_TESTING, &pf->state) ||
5130             test_bit(__I40E_BAD_EEPROM, &pf->state))
5131                 return -EBUSY;
5132
5133         netif_carrier_off(netdev);
5134
5135         err = i40e_vsi_open(vsi);
5136         if (err)
5137                 return err;
5138
5139         /* configure global TSO hardware offload settings */
5140         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5141                                                        TCP_FLAG_FIN) >> 16);
5142         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5143                                                        TCP_FLAG_FIN |
5144                                                        TCP_FLAG_CWR) >> 16);
5145         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5146
5147 #ifdef CONFIG_I40E_VXLAN
5148         vxlan_get_rx_port(netdev);
5149 #endif
5150
5151         return 0;
5152 }
5153
5154 /**
5155  * i40e_vsi_open -
5156  * @vsi: the VSI to open
5157  *
5158  * Finish initialization of the VSI.
5159  *
5160  * Returns 0 on success, negative value on failure
5161  **/
5162 int i40e_vsi_open(struct i40e_vsi *vsi)
5163 {
5164         struct i40e_pf *pf = vsi->back;
5165         char int_name[I40E_INT_NAME_STR_LEN];
5166         int err;
5167
5168         /* allocate descriptors */
5169         err = i40e_vsi_setup_tx_resources(vsi);
5170         if (err)
5171                 goto err_setup_tx;
5172         err = i40e_vsi_setup_rx_resources(vsi);
5173         if (err)
5174                 goto err_setup_rx;
5175
5176         err = i40e_vsi_configure(vsi);
5177         if (err)
5178                 goto err_setup_rx;
5179
5180         if (vsi->netdev) {
5181                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5182                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5183                 err = i40e_vsi_request_irq(vsi, int_name);
5184                 if (err)
5185                         goto err_setup_rx;
5186
5187                 /* Notify the stack of the actual queue counts. */
5188                 err = netif_set_real_num_tx_queues(vsi->netdev,
5189                                                    vsi->num_queue_pairs);
5190                 if (err)
5191                         goto err_set_queues;
5192
5193                 err = netif_set_real_num_rx_queues(vsi->netdev,
5194                                                    vsi->num_queue_pairs);
5195                 if (err)
5196                         goto err_set_queues;
5197
5198         } else if (vsi->type == I40E_VSI_FDIR) {
5199                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5200                          dev_driver_string(&pf->pdev->dev),
5201                          dev_name(&pf->pdev->dev));
5202                 err = i40e_vsi_request_irq(vsi, int_name);
5203
5204         } else {
5205                 err = -EINVAL;
5206                 goto err_setup_rx;
5207         }
5208
5209         err = i40e_up_complete(vsi);
5210         if (err)
5211                 goto err_up_complete;
5212
5213         return 0;
5214
5215 err_up_complete:
5216         i40e_down(vsi);
5217 err_set_queues:
5218         i40e_vsi_free_irq(vsi);
5219 err_setup_rx:
5220         i40e_vsi_free_rx_resources(vsi);
5221 err_setup_tx:
5222         i40e_vsi_free_tx_resources(vsi);
5223         if (vsi == pf->vsi[pf->lan_vsi])
5224                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5225
5226         return err;
5227 }
5228
5229 /**
5230  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5231  * @pf: Pointer to PF
5232  *
5233  * This function destroys the hlist where all the Flow Director
5234  * filters were saved.
5235  **/
5236 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5237 {
5238         struct i40e_fdir_filter *filter;
5239         struct hlist_node *node2;
5240
5241         hlist_for_each_entry_safe(filter, node2,
5242                                   &pf->fdir_filter_list, fdir_node) {
5243                 hlist_del(&filter->fdir_node);
5244                 kfree(filter);
5245         }
5246         pf->fdir_pf_active_filters = 0;
5247 }
5248
5249 /**
5250  * i40e_close - Disables a network interface
5251  * @netdev: network interface device structure
5252  *
5253  * The close entry point is called when an interface is de-activated
5254  * by the OS.  The hardware is still under the driver's control, but
5255  * this netdev interface is disabled.
5256  *
5257  * Returns 0, this is not allowed to fail
5258  **/
5259 #ifdef I40E_FCOE
5260 int i40e_close(struct net_device *netdev)
5261 #else
5262 static int i40e_close(struct net_device *netdev)
5263 #endif
5264 {
5265         struct i40e_netdev_priv *np = netdev_priv(netdev);
5266         struct i40e_vsi *vsi = np->vsi;
5267
5268         i40e_vsi_close(vsi);
5269
5270         return 0;
5271 }
5272
5273 /**
5274  * i40e_do_reset - Start a PF or Core Reset sequence
5275  * @pf: board private structure
5276  * @reset_flags: which reset is requested
5277  *
5278  * The essential difference in resets is that the PF Reset
5279  * doesn't clear the packet buffers, doesn't reset the PE
5280  * firmware, and doesn't bother the other PFs on the chip.
5281  **/
5282 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5283 {
5284         u32 val;
5285
5286         WARN_ON(in_interrupt());
5287
5288         if (i40e_check_asq_alive(&pf->hw))
5289                 i40e_vc_notify_reset(pf);
5290
5291         /* do the biggest reset indicated */
5292         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5293
5294                 /* Request a Global Reset
5295                  *
5296                  * This will start the chip's countdown to the actual full
5297                  * chip reset event, and a warning interrupt to be sent
5298                  * to all PFs, including the requestor.  Our handler
5299                  * for the warning interrupt will deal with the shutdown
5300                  * and recovery of the switch setup.
5301                  */
5302                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5303                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5304                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5305                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5306
5307         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5308
5309                 /* Request a Core Reset
5310                  *
5311                  * Same as Global Reset, except does *not* include the MAC/PHY
5312                  */
5313                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5314                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5315                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5316                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5317                 i40e_flush(&pf->hw);
5318
5319         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5320
5321                 /* Request a PF Reset
5322                  *
5323                  * Resets only the PF-specific registers
5324                  *
5325                  * This goes directly to the tear-down and rebuild of
5326                  * the switch, since we need to do all the recovery as
5327                  * for the Core Reset.
5328                  */
5329                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5330                 i40e_handle_reset_warning(pf);
5331
5332         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5333                 int v;
5334
5335                 /* Find the VSI(s) that requested a re-init */
5336                 dev_info(&pf->pdev->dev,
5337                          "VSI reinit requested\n");
5338                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5339                         struct i40e_vsi *vsi = pf->vsi[v];
5340                         if (vsi != NULL &&
5341                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5342                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5343                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5344                         }
5345                 }
5346
5347                 /* no further action needed, so return now */
5348                 return;
5349         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5350                 int v;
5351
5352                 /* Find the VSI(s) that needs to be brought down */
5353                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5354                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5355                         struct i40e_vsi *vsi = pf->vsi[v];
5356                         if (vsi != NULL &&
5357                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5358                                 set_bit(__I40E_DOWN, &vsi->state);
5359                                 i40e_down(vsi);
5360                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5361                         }
5362                 }
5363
5364                 /* no further action needed, so return now */
5365                 return;
5366         } else {
5367                 dev_info(&pf->pdev->dev,
5368                          "bad reset request 0x%08x\n", reset_flags);
5369                 return;
5370         }
5371 }
5372
5373 #ifdef CONFIG_I40E_DCB
5374 /**
5375  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5376  * @pf: board private structure
5377  * @old_cfg: current DCB config
5378  * @new_cfg: new DCB config
5379  **/
5380 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5381                             struct i40e_dcbx_config *old_cfg,
5382                             struct i40e_dcbx_config *new_cfg)
5383 {
5384         bool need_reconfig = false;
5385
5386         /* Check if ETS configuration has changed */
5387         if (memcmp(&new_cfg->etscfg,
5388                    &old_cfg->etscfg,
5389                    sizeof(new_cfg->etscfg))) {
5390                 /* If Priority Table has changed reconfig is needed */
5391                 if (memcmp(&new_cfg->etscfg.prioritytable,
5392                            &old_cfg->etscfg.prioritytable,
5393                            sizeof(new_cfg->etscfg.prioritytable))) {
5394                         need_reconfig = true;
5395                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5396                 }
5397
5398                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5399                            &old_cfg->etscfg.tcbwtable,
5400                            sizeof(new_cfg->etscfg.tcbwtable)))
5401                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5402
5403                 if (memcmp(&new_cfg->etscfg.tsatable,
5404                            &old_cfg->etscfg.tsatable,
5405                            sizeof(new_cfg->etscfg.tsatable)))
5406                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5407         }
5408
5409         /* Check if PFC configuration has changed */
5410         if (memcmp(&new_cfg->pfc,
5411                    &old_cfg->pfc,
5412                    sizeof(new_cfg->pfc))) {
5413                 need_reconfig = true;
5414                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5415         }
5416
5417         /* Check if APP Table has changed */
5418         if (memcmp(&new_cfg->app,
5419                    &old_cfg->app,
5420                    sizeof(new_cfg->app))) {
5421                 need_reconfig = true;
5422                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5423         }
5424
5425         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5426                 need_reconfig);
5427         return need_reconfig;
5428 }
5429
5430 /**
5431  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5432  * @pf: board private structure
5433  * @e: event info posted on ARQ
5434  **/
5435 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5436                                   struct i40e_arq_event_info *e)
5437 {
5438         struct i40e_aqc_lldp_get_mib *mib =
5439                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5440         struct i40e_hw *hw = &pf->hw;
5441         struct i40e_dcbx_config tmp_dcbx_cfg;
5442         bool need_reconfig = false;
5443         int ret = 0;
5444         u8 type;
5445
5446         /* Not DCB capable or capability disabled */
5447         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5448                 return ret;
5449
5450         /* Ignore if event is not for Nearest Bridge */
5451         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5452                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5453         dev_dbg(&pf->pdev->dev,
5454                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5455         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5456                 return ret;
5457
5458         /* Check MIB Type and return if event for Remote MIB update */
5459         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5460         dev_dbg(&pf->pdev->dev,
5461                 "%s: LLDP event mib type %s\n", __func__,
5462                 type ? "remote" : "local");
5463         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5464                 /* Update the remote cached instance and return */
5465                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5466                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5467                                 &hw->remote_dcbx_config);
5468                 goto exit;
5469         }
5470
5471         /* Store the old configuration */
5472         tmp_dcbx_cfg = hw->local_dcbx_config;
5473
5474         /* Reset the old DCBx configuration data */
5475         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5476         /* Get updated DCBX data from firmware */
5477         ret = i40e_get_dcb_config(&pf->hw);
5478         if (ret) {
5479                 dev_info(&pf->pdev->dev,
5480                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5481                          i40e_stat_str(&pf->hw, ret),
5482                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5483                 goto exit;
5484         }
5485
5486         /* No change detected in DCBX configs */
5487         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5488                     sizeof(tmp_dcbx_cfg))) {
5489                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5490                 goto exit;
5491         }
5492
5493         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5494                                                &hw->local_dcbx_config);
5495
5496         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5497
5498         if (!need_reconfig)
5499                 goto exit;
5500
5501         /* Enable DCB tagging only when more than one TC */
5502         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5503                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5504         else
5505                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5506
5507         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5508         /* Reconfiguration needed quiesce all VSIs */
5509         i40e_pf_quiesce_all_vsi(pf);
5510
5511         /* Changes in configuration update VEB/VSI */
5512         i40e_dcb_reconfigure(pf);
5513
5514         ret = i40e_resume_port_tx(pf);
5515
5516         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5517         /* In case of error no point in resuming VSIs */
5518         if (ret)
5519                 goto exit;
5520
5521         /* Wait for the PF's Tx queues to be disabled */
5522         ret = i40e_pf_wait_txq_disabled(pf);
5523         if (ret) {
5524                 /* Schedule PF reset to recover */
5525                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5526                 i40e_service_event_schedule(pf);
5527         } else {
5528                 i40e_pf_unquiesce_all_vsi(pf);
5529         }
5530
5531 exit:
5532         return ret;
5533 }
5534 #endif /* CONFIG_I40E_DCB */
5535
5536 /**
5537  * i40e_do_reset_safe - Protected reset path for userland calls.
5538  * @pf: board private structure
5539  * @reset_flags: which reset is requested
5540  *
5541  **/
5542 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5543 {
5544         rtnl_lock();
5545         i40e_do_reset(pf, reset_flags);
5546         rtnl_unlock();
5547 }
5548
5549 /**
5550  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5551  * @pf: board private structure
5552  * @e: event info posted on ARQ
5553  *
5554  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5555  * and VF queues
5556  **/
5557 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5558                                            struct i40e_arq_event_info *e)
5559 {
5560         struct i40e_aqc_lan_overflow *data =
5561                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5562         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5563         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5564         struct i40e_hw *hw = &pf->hw;
5565         struct i40e_vf *vf;
5566         u16 vf_id;
5567
5568         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5569                 queue, qtx_ctl);
5570
5571         /* Queue belongs to VF, find the VF and issue VF reset */
5572         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5573             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5574                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5575                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5576                 vf_id -= hw->func_caps.vf_base_id;
5577                 vf = &pf->vf[vf_id];
5578                 i40e_vc_notify_vf_reset(vf);
5579                 /* Allow VF to process pending reset notification */
5580                 msleep(20);
5581                 i40e_reset_vf(vf, false);
5582         }
5583 }
5584
5585 /**
5586  * i40e_service_event_complete - Finish up the service event
5587  * @pf: board private structure
5588  **/
5589 static void i40e_service_event_complete(struct i40e_pf *pf)
5590 {
5591         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5592
5593         /* flush memory to make sure state is correct before next watchog */
5594         smp_mb__before_atomic();
5595         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5596 }
5597
5598 /**
5599  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5600  * @pf: board private structure
5601  **/
5602 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5603 {
5604         u32 val, fcnt_prog;
5605
5606         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5607         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5608         return fcnt_prog;
5609 }
5610
5611 /**
5612  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5613  * @pf: board private structure
5614  **/
5615 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5616 {
5617         u32 val, fcnt_prog;
5618
5619         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5620         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5621                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5622                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5623         return fcnt_prog;
5624 }
5625
5626 /**
5627  * i40e_get_global_fd_count - Get total FD filters programmed on device
5628  * @pf: board private structure
5629  **/
5630 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5631 {
5632         u32 val, fcnt_prog;
5633
5634         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5635         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5636                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5637                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5638         return fcnt_prog;
5639 }
5640
5641 /**
5642  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5643  * @pf: board private structure
5644  **/
5645 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5646 {
5647         u32 fcnt_prog, fcnt_avail;
5648
5649         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5650                 return;
5651
5652         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5653          * to re-enable
5654          */
5655         fcnt_prog = i40e_get_global_fd_count(pf);
5656         fcnt_avail = pf->fdir_pf_filter_count;
5657         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5658             (pf->fd_add_err == 0) ||
5659             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5660                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5661                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5662                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5663                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5664                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5665                 }
5666         }
5667         /* Wait for some more space to be available to turn on ATR */
5668         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5669                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5670                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5671                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5672                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5673                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5674                 }
5675         }
5676 }
5677
5678 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5679 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5680 /**
5681  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5682  * @pf: board private structure
5683  **/
5684 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5685 {
5686         unsigned long min_flush_time;
5687         int flush_wait_retry = 50;
5688         bool disable_atr = false;
5689         int fd_room;
5690         int reg;
5691
5692         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5693                 return;
5694
5695         if (time_after(jiffies, pf->fd_flush_timestamp +
5696                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5697                 /* If the flush is happening too quick and we have mostly
5698                  * SB rules we should not re-enable ATR for some time.
5699                  */
5700                 min_flush_time = pf->fd_flush_timestamp
5701                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5702                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5703
5704                 if (!(time_after(jiffies, min_flush_time)) &&
5705                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5706                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5707                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5708                         disable_atr = true;
5709                 }
5710
5711                 pf->fd_flush_timestamp = jiffies;
5712                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5713                 /* flush all filters */
5714                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5715                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5716                 i40e_flush(&pf->hw);
5717                 pf->fd_flush_cnt++;
5718                 pf->fd_add_err = 0;
5719                 do {
5720                         /* Check FD flush status every 5-6msec */
5721                         usleep_range(5000, 6000);
5722                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5723                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5724                                 break;
5725                 } while (flush_wait_retry--);
5726                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5727                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5728                 } else {
5729                         /* replay sideband filters */
5730                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5731                         if (!disable_atr)
5732                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5733                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5734                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5735                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5736                 }
5737         }
5738 }
5739
5740 /**
5741  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5742  * @pf: board private structure
5743  **/
5744 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5745 {
5746         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5747 }
5748
5749 /* We can see up to 256 filter programming desc in transit if the filters are
5750  * being applied really fast; before we see the first
5751  * filter miss error on Rx queue 0. Accumulating enough error messages before
5752  * reacting will make sure we don't cause flush too often.
5753  */
5754 #define I40E_MAX_FD_PROGRAM_ERROR 256
5755
5756 /**
5757  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5758  * @pf: board private structure
5759  **/
5760 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5761 {
5762
5763         /* if interface is down do nothing */
5764         if (test_bit(__I40E_DOWN, &pf->state))
5765                 return;
5766
5767         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5768                 return;
5769
5770         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5771                 i40e_fdir_flush_and_replay(pf);
5772
5773         i40e_fdir_check_and_reenable(pf);
5774
5775 }
5776
5777 /**
5778  * i40e_vsi_link_event - notify VSI of a link event
5779  * @vsi: vsi to be notified
5780  * @link_up: link up or down
5781  **/
5782 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5783 {
5784         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5785                 return;
5786
5787         switch (vsi->type) {
5788         case I40E_VSI_MAIN:
5789 #ifdef I40E_FCOE
5790         case I40E_VSI_FCOE:
5791 #endif
5792                 if (!vsi->netdev || !vsi->netdev_registered)
5793                         break;
5794
5795                 if (link_up) {
5796                         netif_carrier_on(vsi->netdev);
5797                         netif_tx_wake_all_queues(vsi->netdev);
5798                 } else {
5799                         netif_carrier_off(vsi->netdev);
5800                         netif_tx_stop_all_queues(vsi->netdev);
5801                 }
5802                 break;
5803
5804         case I40E_VSI_SRIOV:
5805         case I40E_VSI_VMDQ2:
5806         case I40E_VSI_CTRL:
5807         case I40E_VSI_MIRROR:
5808         default:
5809                 /* there is no notification for other VSIs */
5810                 break;
5811         }
5812 }
5813
5814 /**
5815  * i40e_veb_link_event - notify elements on the veb of a link event
5816  * @veb: veb to be notified
5817  * @link_up: link up or down
5818  **/
5819 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5820 {
5821         struct i40e_pf *pf;
5822         int i;
5823
5824         if (!veb || !veb->pf)
5825                 return;
5826         pf = veb->pf;
5827
5828         /* depth first... */
5829         for (i = 0; i < I40E_MAX_VEB; i++)
5830                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5831                         i40e_veb_link_event(pf->veb[i], link_up);
5832
5833         /* ... now the local VSIs */
5834         for (i = 0; i < pf->num_alloc_vsi; i++)
5835                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5836                         i40e_vsi_link_event(pf->vsi[i], link_up);
5837 }
5838
5839 /**
5840  * i40e_link_event - Update netif_carrier status
5841  * @pf: board private structure
5842  **/
5843 static void i40e_link_event(struct i40e_pf *pf)
5844 {
5845         bool new_link, old_link;
5846         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5847         u8 new_link_speed, old_link_speed;
5848
5849         /* set this to force the get_link_status call to refresh state */
5850         pf->hw.phy.get_link_info = true;
5851
5852         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5853         new_link = i40e_get_link_status(&pf->hw);
5854         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5855         new_link_speed = pf->hw.phy.link_info.link_speed;
5856
5857         if (new_link == old_link &&
5858             new_link_speed == old_link_speed &&
5859             (test_bit(__I40E_DOWN, &vsi->state) ||
5860              new_link == netif_carrier_ok(vsi->netdev)))
5861                 return;
5862
5863         if (!test_bit(__I40E_DOWN, &vsi->state))
5864                 i40e_print_link_message(vsi, new_link);
5865
5866         /* Notify the base of the switch tree connected to
5867          * the link.  Floating VEBs are not notified.
5868          */
5869         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5870                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5871         else
5872                 i40e_vsi_link_event(vsi, new_link);
5873
5874         if (pf->vf)
5875                 i40e_vc_notify_link_state(pf);
5876
5877         if (pf->flags & I40E_FLAG_PTP)
5878                 i40e_ptp_set_increment(pf);
5879 }
5880
5881 /**
5882  * i40e_watchdog_subtask - periodic checks not using event driven response
5883  * @pf: board private structure
5884  **/
5885 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5886 {
5887         int i;
5888
5889         /* if interface is down do nothing */
5890         if (test_bit(__I40E_DOWN, &pf->state) ||
5891             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5892                 return;
5893
5894         /* make sure we don't do these things too often */
5895         if (time_before(jiffies, (pf->service_timer_previous +
5896                                   pf->service_timer_period)))
5897                 return;
5898         pf->service_timer_previous = jiffies;
5899
5900         i40e_link_event(pf);
5901
5902         /* Update the stats for active netdevs so the network stack
5903          * can look at updated numbers whenever it cares to
5904          */
5905         for (i = 0; i < pf->num_alloc_vsi; i++)
5906                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5907                         i40e_update_stats(pf->vsi[i]);
5908
5909         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5910                 /* Update the stats for the active switching components */
5911                 for (i = 0; i < I40E_MAX_VEB; i++)
5912                         if (pf->veb[i])
5913                                 i40e_update_veb_stats(pf->veb[i]);
5914         }
5915
5916         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5917 }
5918
5919 /**
5920  * i40e_reset_subtask - Set up for resetting the device and driver
5921  * @pf: board private structure
5922  **/
5923 static void i40e_reset_subtask(struct i40e_pf *pf)
5924 {
5925         u32 reset_flags = 0;
5926
5927         rtnl_lock();
5928         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5929                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5930                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5931         }
5932         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5933                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5934                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5935         }
5936         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5937                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5938                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5939         }
5940         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5941                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5942                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5943         }
5944         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5945                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5946                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5947         }
5948
5949         /* If there's a recovery already waiting, it takes
5950          * precedence before starting a new reset sequence.
5951          */
5952         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5953                 i40e_handle_reset_warning(pf);
5954                 goto unlock;
5955         }
5956
5957         /* If we're already down or resetting, just bail */
5958         if (reset_flags &&
5959             !test_bit(__I40E_DOWN, &pf->state) &&
5960             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5961                 i40e_do_reset(pf, reset_flags);
5962
5963 unlock:
5964         rtnl_unlock();
5965 }
5966
5967 /**
5968  * i40e_handle_link_event - Handle link event
5969  * @pf: board private structure
5970  * @e: event info posted on ARQ
5971  **/
5972 static void i40e_handle_link_event(struct i40e_pf *pf,
5973                                    struct i40e_arq_event_info *e)
5974 {
5975         struct i40e_hw *hw = &pf->hw;
5976         struct i40e_aqc_get_link_status *status =
5977                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5978
5979         /* save off old link status information */
5980         hw->phy.link_info_old = hw->phy.link_info;
5981
5982         /* Do a new status request to re-enable LSE reporting
5983          * and load new status information into the hw struct
5984          * This completely ignores any state information
5985          * in the ARQ event info, instead choosing to always
5986          * issue the AQ update link status command.
5987          */
5988         i40e_link_event(pf);
5989
5990         /* check for unqualified module, if link is down */
5991         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5992             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5993             (!(status->link_info & I40E_AQ_LINK_UP)))
5994                 dev_err(&pf->pdev->dev,
5995                         "The driver failed to link because an unqualified module was detected.\n");
5996 }
5997
5998 /**
5999  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6000  * @pf: board private structure
6001  **/
6002 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6003 {
6004         struct i40e_arq_event_info event;
6005         struct i40e_hw *hw = &pf->hw;
6006         u16 pending, i = 0;
6007         i40e_status ret;
6008         u16 opcode;
6009         u32 oldval;
6010         u32 val;
6011
6012         /* Do not run clean AQ when PF reset fails */
6013         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6014                 return;
6015
6016         /* check for error indications */
6017         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6018         oldval = val;
6019         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6020                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6021                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6022         }
6023         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6024                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6025                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6026         }
6027         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6028                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6029                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6030         }
6031         if (oldval != val)
6032                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6033
6034         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6035         oldval = val;
6036         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6037                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6038                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6039         }
6040         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6041                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6042                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6043         }
6044         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6045                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6046                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6047         }
6048         if (oldval != val)
6049                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6050
6051         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6052         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6053         if (!event.msg_buf)
6054                 return;
6055
6056         do {
6057                 ret = i40e_clean_arq_element(hw, &event, &pending);
6058                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6059                         break;
6060                 else if (ret) {
6061                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6062                         break;
6063                 }
6064
6065                 opcode = le16_to_cpu(event.desc.opcode);
6066                 switch (opcode) {
6067
6068                 case i40e_aqc_opc_get_link_status:
6069                         i40e_handle_link_event(pf, &event);
6070                         break;
6071                 case i40e_aqc_opc_send_msg_to_pf:
6072                         ret = i40e_vc_process_vf_msg(pf,
6073                                         le16_to_cpu(event.desc.retval),
6074                                         le32_to_cpu(event.desc.cookie_high),
6075                                         le32_to_cpu(event.desc.cookie_low),
6076                                         event.msg_buf,
6077                                         event.msg_len);
6078                         break;
6079                 case i40e_aqc_opc_lldp_update_mib:
6080                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6081 #ifdef CONFIG_I40E_DCB
6082                         rtnl_lock();
6083                         ret = i40e_handle_lldp_event(pf, &event);
6084                         rtnl_unlock();
6085 #endif /* CONFIG_I40E_DCB */
6086                         break;
6087                 case i40e_aqc_opc_event_lan_overflow:
6088                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6089                         i40e_handle_lan_overflow_event(pf, &event);
6090                         break;
6091                 case i40e_aqc_opc_send_msg_to_peer:
6092                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6093                         break;
6094                 case i40e_aqc_opc_nvm_erase:
6095                 case i40e_aqc_opc_nvm_update:
6096                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6097                         break;
6098                 default:
6099                         dev_info(&pf->pdev->dev,
6100                                  "ARQ Error: Unknown event 0x%04x received\n",
6101                                  opcode);
6102                         break;
6103                 }
6104         } while (pending && (i++ < pf->adminq_work_limit));
6105
6106         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6107         /* re-enable Admin queue interrupt cause */
6108         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6109         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6110         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6111         i40e_flush(hw);
6112
6113         kfree(event.msg_buf);
6114 }
6115
6116 /**
6117  * i40e_verify_eeprom - make sure eeprom is good to use
6118  * @pf: board private structure
6119  **/
6120 static void i40e_verify_eeprom(struct i40e_pf *pf)
6121 {
6122         int err;
6123
6124         err = i40e_diag_eeprom_test(&pf->hw);
6125         if (err) {
6126                 /* retry in case of garbage read */
6127                 err = i40e_diag_eeprom_test(&pf->hw);
6128                 if (err) {
6129                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6130                                  err);
6131                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6132                 }
6133         }
6134
6135         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6136                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6137                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6138         }
6139 }
6140
6141 /**
6142  * i40e_enable_pf_switch_lb
6143  * @pf: pointer to the PF structure
6144  *
6145  * enable switch loop back or die - no point in a return value
6146  **/
6147 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6148 {
6149         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6150         struct i40e_vsi_context ctxt;
6151         int ret;
6152
6153         ctxt.seid = pf->main_vsi_seid;
6154         ctxt.pf_num = pf->hw.pf_id;
6155         ctxt.vf_num = 0;
6156         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6157         if (ret) {
6158                 dev_info(&pf->pdev->dev,
6159                          "couldn't get PF vsi config, err %s aq_err %s\n",
6160                          i40e_stat_str(&pf->hw, ret),
6161                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6162                 return;
6163         }
6164         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6165         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6166         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6167
6168         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6169         if (ret) {
6170                 dev_info(&pf->pdev->dev,
6171                          "update vsi switch failed, err %s aq_err %s\n",
6172                          i40e_stat_str(&pf->hw, ret),
6173                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6174         }
6175 }
6176
6177 /**
6178  * i40e_disable_pf_switch_lb
6179  * @pf: pointer to the PF structure
6180  *
6181  * disable switch loop back or die - no point in a return value
6182  **/
6183 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6184 {
6185         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6186         struct i40e_vsi_context ctxt;
6187         int ret;
6188
6189         ctxt.seid = pf->main_vsi_seid;
6190         ctxt.pf_num = pf->hw.pf_id;
6191         ctxt.vf_num = 0;
6192         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6193         if (ret) {
6194                 dev_info(&pf->pdev->dev,
6195                          "couldn't get PF vsi config, err %s aq_err %s\n",
6196                          i40e_stat_str(&pf->hw, ret),
6197                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6198                 return;
6199         }
6200         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6201         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6202         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6203
6204         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6205         if (ret) {
6206                 dev_info(&pf->pdev->dev,
6207                          "update vsi switch failed, err %s aq_err %s\n",
6208                          i40e_stat_str(&pf->hw, ret),
6209                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6210         }
6211 }
6212
6213 /**
6214  * i40e_config_bridge_mode - Configure the HW bridge mode
6215  * @veb: pointer to the bridge instance
6216  *
6217  * Configure the loop back mode for the LAN VSI that is downlink to the
6218  * specified HW bridge instance. It is expected this function is called
6219  * when a new HW bridge is instantiated.
6220  **/
6221 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6222 {
6223         struct i40e_pf *pf = veb->pf;
6224
6225         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6226                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6227         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6228                 i40e_disable_pf_switch_lb(pf);
6229         else
6230                 i40e_enable_pf_switch_lb(pf);
6231 }
6232
6233 /**
6234  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6235  * @veb: pointer to the VEB instance
6236  *
6237  * This is a recursive function that first builds the attached VSIs then
6238  * recurses in to build the next layer of VEB.  We track the connections
6239  * through our own index numbers because the seid's from the HW could
6240  * change across the reset.
6241  **/
6242 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6243 {
6244         struct i40e_vsi *ctl_vsi = NULL;
6245         struct i40e_pf *pf = veb->pf;
6246         int v, veb_idx;
6247         int ret;
6248
6249         /* build VSI that owns this VEB, temporarily attached to base VEB */
6250         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6251                 if (pf->vsi[v] &&
6252                     pf->vsi[v]->veb_idx == veb->idx &&
6253                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6254                         ctl_vsi = pf->vsi[v];
6255                         break;
6256                 }
6257         }
6258         if (!ctl_vsi) {
6259                 dev_info(&pf->pdev->dev,
6260                          "missing owner VSI for veb_idx %d\n", veb->idx);
6261                 ret = -ENOENT;
6262                 goto end_reconstitute;
6263         }
6264         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6265                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6266         ret = i40e_add_vsi(ctl_vsi);
6267         if (ret) {
6268                 dev_info(&pf->pdev->dev,
6269                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6270                          veb->idx, ret);
6271                 goto end_reconstitute;
6272         }
6273         i40e_vsi_reset_stats(ctl_vsi);
6274
6275         /* create the VEB in the switch and move the VSI onto the VEB */
6276         ret = i40e_add_veb(veb, ctl_vsi);
6277         if (ret)
6278                 goto end_reconstitute;
6279
6280         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6281                 veb->bridge_mode = BRIDGE_MODE_VEB;
6282         else
6283                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6284         i40e_config_bridge_mode(veb);
6285
6286         /* create the remaining VSIs attached to this VEB */
6287         for (v = 0; v < pf->num_alloc_vsi; v++) {
6288                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6289                         continue;
6290
6291                 if (pf->vsi[v]->veb_idx == veb->idx) {
6292                         struct i40e_vsi *vsi = pf->vsi[v];
6293                         vsi->uplink_seid = veb->seid;
6294                         ret = i40e_add_vsi(vsi);
6295                         if (ret) {
6296                                 dev_info(&pf->pdev->dev,
6297                                          "rebuild of vsi_idx %d failed: %d\n",
6298                                          v, ret);
6299                                 goto end_reconstitute;
6300                         }
6301                         i40e_vsi_reset_stats(vsi);
6302                 }
6303         }
6304
6305         /* create any VEBs attached to this VEB - RECURSION */
6306         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6307                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6308                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6309                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6310                         if (ret)
6311                                 break;
6312                 }
6313         }
6314
6315 end_reconstitute:
6316         return ret;
6317 }
6318
6319 /**
6320  * i40e_get_capabilities - get info about the HW
6321  * @pf: the PF struct
6322  **/
6323 static int i40e_get_capabilities(struct i40e_pf *pf)
6324 {
6325         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6326         u16 data_size;
6327         int buf_len;
6328         int err;
6329
6330         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6331         do {
6332                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6333                 if (!cap_buf)
6334                         return -ENOMEM;
6335
6336                 /* this loads the data into the hw struct for us */
6337                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6338                                             &data_size,
6339                                             i40e_aqc_opc_list_func_capabilities,
6340                                             NULL);
6341                 /* data loaded, buffer no longer needed */
6342                 kfree(cap_buf);
6343
6344                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6345                         /* retry with a larger buffer */
6346                         buf_len = data_size;
6347                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6348                         dev_info(&pf->pdev->dev,
6349                                  "capability discovery failed, err %s aq_err %s\n",
6350                                  i40e_stat_str(&pf->hw, err),
6351                                  i40e_aq_str(&pf->hw,
6352                                              pf->hw.aq.asq_last_status));
6353                         return -ENODEV;
6354                 }
6355         } while (err);
6356
6357         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6358             (pf->hw.aq.fw_maj_ver < 2)) {
6359                 pf->hw.func_caps.num_msix_vectors++;
6360                 pf->hw.func_caps.num_msix_vectors_vf++;
6361         }
6362
6363         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6364                 dev_info(&pf->pdev->dev,
6365                          "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",
6366                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6367                          pf->hw.func_caps.num_msix_vectors,
6368                          pf->hw.func_caps.num_msix_vectors_vf,
6369                          pf->hw.func_caps.fd_filters_guaranteed,
6370                          pf->hw.func_caps.fd_filters_best_effort,
6371                          pf->hw.func_caps.num_tx_qp,
6372                          pf->hw.func_caps.num_vsis);
6373
6374 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6375                        + pf->hw.func_caps.num_vfs)
6376         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6377                 dev_info(&pf->pdev->dev,
6378                          "got num_vsis %d, setting num_vsis to %d\n",
6379                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6380                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6381         }
6382
6383         return 0;
6384 }
6385
6386 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6387
6388 /**
6389  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6390  * @pf: board private structure
6391  **/
6392 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6393 {
6394         struct i40e_vsi *vsi;
6395         int i;
6396
6397         /* quick workaround for an NVM issue that leaves a critical register
6398          * uninitialized
6399          */
6400         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6401                 static const u32 hkey[] = {
6402                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6403                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6404                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6405                         0x95b3a76d};
6406
6407                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6408                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6409         }
6410
6411         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6412                 return;
6413
6414         /* find existing VSI and see if it needs configuring */
6415         vsi = NULL;
6416         for (i = 0; i < pf->num_alloc_vsi; i++) {
6417                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6418                         vsi = pf->vsi[i];
6419                         break;
6420                 }
6421         }
6422
6423         /* create a new VSI if none exists */
6424         if (!vsi) {
6425                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6426                                      pf->vsi[pf->lan_vsi]->seid, 0);
6427                 if (!vsi) {
6428                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6429                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6430                         return;
6431                 }
6432         }
6433
6434         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6435 }
6436
6437 /**
6438  * i40e_fdir_teardown - release the Flow Director resources
6439  * @pf: board private structure
6440  **/
6441 static void i40e_fdir_teardown(struct i40e_pf *pf)
6442 {
6443         int i;
6444
6445         i40e_fdir_filter_exit(pf);
6446         for (i = 0; i < pf->num_alloc_vsi; i++) {
6447                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6448                         i40e_vsi_release(pf->vsi[i]);
6449                         break;
6450                 }
6451         }
6452 }
6453
6454 /**
6455  * i40e_prep_for_reset - prep for the core to reset
6456  * @pf: board private structure
6457  *
6458  * Close up the VFs and other things in prep for PF Reset.
6459   **/
6460 static void i40e_prep_for_reset(struct i40e_pf *pf)
6461 {
6462         struct i40e_hw *hw = &pf->hw;
6463         i40e_status ret = 0;
6464         u32 v;
6465
6466         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6467         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6468                 return;
6469
6470         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6471
6472         /* quiesce the VSIs and their queues that are not already DOWN */
6473         i40e_pf_quiesce_all_vsi(pf);
6474
6475         for (v = 0; v < pf->num_alloc_vsi; v++) {
6476                 if (pf->vsi[v])
6477                         pf->vsi[v]->seid = 0;
6478         }
6479
6480         i40e_shutdown_adminq(&pf->hw);
6481
6482         /* call shutdown HMC */
6483         if (hw->hmc.hmc_obj) {
6484                 ret = i40e_shutdown_lan_hmc(hw);
6485                 if (ret)
6486                         dev_warn(&pf->pdev->dev,
6487                                  "shutdown_lan_hmc failed: %d\n", ret);
6488         }
6489 }
6490
6491 /**
6492  * i40e_send_version - update firmware with driver version
6493  * @pf: PF struct
6494  */
6495 static void i40e_send_version(struct i40e_pf *pf)
6496 {
6497         struct i40e_driver_version dv;
6498
6499         dv.major_version = DRV_VERSION_MAJOR;
6500         dv.minor_version = DRV_VERSION_MINOR;
6501         dv.build_version = DRV_VERSION_BUILD;
6502         dv.subbuild_version = 0;
6503         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6504         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6505 }
6506
6507 /**
6508  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6509  * @pf: board private structure
6510  * @reinit: if the Main VSI needs to re-initialized.
6511  **/
6512 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6513 {
6514         struct i40e_hw *hw = &pf->hw;
6515         u8 set_fc_aq_fail = 0;
6516         i40e_status ret;
6517         u32 v;
6518
6519         /* Now we wait for GRST to settle out.
6520          * We don't have to delete the VEBs or VSIs from the hw switch
6521          * because the reset will make them disappear.
6522          */
6523         ret = i40e_pf_reset(hw);
6524         if (ret) {
6525                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6526                 set_bit(__I40E_RESET_FAILED, &pf->state);
6527                 goto clear_recovery;
6528         }
6529         pf->pfr_count++;
6530
6531         if (test_bit(__I40E_DOWN, &pf->state))
6532                 goto clear_recovery;
6533         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6534
6535         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6536         ret = i40e_init_adminq(&pf->hw);
6537         if (ret) {
6538                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6539                          i40e_stat_str(&pf->hw, ret),
6540                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6541                 goto clear_recovery;
6542         }
6543
6544         /* re-verify the eeprom if we just had an EMP reset */
6545         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6546                 i40e_verify_eeprom(pf);
6547
6548         i40e_clear_pxe_mode(hw);
6549         ret = i40e_get_capabilities(pf);
6550         if (ret)
6551                 goto end_core_reset;
6552
6553         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6554                                 hw->func_caps.num_rx_qp,
6555                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6556         if (ret) {
6557                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6558                 goto end_core_reset;
6559         }
6560         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6561         if (ret) {
6562                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6563                 goto end_core_reset;
6564         }
6565
6566 #ifdef CONFIG_I40E_DCB
6567         ret = i40e_init_pf_dcb(pf);
6568         if (ret) {
6569                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6570                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6571                 /* Continue without DCB enabled */
6572         }
6573 #endif /* CONFIG_I40E_DCB */
6574 #ifdef I40E_FCOE
6575         ret = i40e_init_pf_fcoe(pf);
6576         if (ret)
6577                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6578
6579 #endif
6580         /* do basic switch setup */
6581         ret = i40e_setup_pf_switch(pf, reinit);
6582         if (ret)
6583                 goto end_core_reset;
6584
6585         /* driver is only interested in link up/down and module qualification
6586          * reports from firmware
6587          */
6588         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6589                                        I40E_AQ_EVENT_LINK_UPDOWN |
6590                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6591         if (ret)
6592                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6593                          i40e_stat_str(&pf->hw, ret),
6594                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6595
6596         /* make sure our flow control settings are restored */
6597         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6598         if (ret)
6599                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6600                          i40e_stat_str(&pf->hw, ret),
6601                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6602
6603         /* Rebuild the VSIs and VEBs that existed before reset.
6604          * They are still in our local switch element arrays, so only
6605          * need to rebuild the switch model in the HW.
6606          *
6607          * If there were VEBs but the reconstitution failed, we'll try
6608          * try to recover minimal use by getting the basic PF VSI working.
6609          */
6610         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6611                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6612                 /* find the one VEB connected to the MAC, and find orphans */
6613                 for (v = 0; v < I40E_MAX_VEB; v++) {
6614                         if (!pf->veb[v])
6615                                 continue;
6616
6617                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6618                             pf->veb[v]->uplink_seid == 0) {
6619                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6620
6621                                 if (!ret)
6622                                         continue;
6623
6624                                 /* If Main VEB failed, we're in deep doodoo,
6625                                  * so give up rebuilding the switch and set up
6626                                  * for minimal rebuild of PF VSI.
6627                                  * If orphan failed, we'll report the error
6628                                  * but try to keep going.
6629                                  */
6630                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6631                                         dev_info(&pf->pdev->dev,
6632                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6633                                                  ret);
6634                                         pf->vsi[pf->lan_vsi]->uplink_seid
6635                                                                 = pf->mac_seid;
6636                                         break;
6637                                 } else if (pf->veb[v]->uplink_seid == 0) {
6638                                         dev_info(&pf->pdev->dev,
6639                                                  "rebuild of orphan VEB failed: %d\n",
6640                                                  ret);
6641                                 }
6642                         }
6643                 }
6644         }
6645
6646         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6647                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6648                 /* no VEB, so rebuild only the Main VSI */
6649                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6650                 if (ret) {
6651                         dev_info(&pf->pdev->dev,
6652                                  "rebuild of Main VSI failed: %d\n", ret);
6653                         goto end_core_reset;
6654                 }
6655         }
6656
6657         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6658             (pf->hw.aq.fw_maj_ver < 4)) {
6659                 msleep(75);
6660                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6661                 if (ret)
6662                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6663                                  i40e_stat_str(&pf->hw, ret),
6664                                  i40e_aq_str(&pf->hw,
6665                                              pf->hw.aq.asq_last_status));
6666         }
6667         /* reinit the misc interrupt */
6668         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6669                 ret = i40e_setup_misc_vector(pf);
6670
6671         /* restart the VSIs that were rebuilt and running before the reset */
6672         i40e_pf_unquiesce_all_vsi(pf);
6673
6674         if (pf->num_alloc_vfs) {
6675                 for (v = 0; v < pf->num_alloc_vfs; v++)
6676                         i40e_reset_vf(&pf->vf[v], true);
6677         }
6678
6679         /* tell the firmware that we're starting */
6680         i40e_send_version(pf);
6681
6682 end_core_reset:
6683         clear_bit(__I40E_RESET_FAILED, &pf->state);
6684 clear_recovery:
6685         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6686 }
6687
6688 /**
6689  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6690  * @pf: board private structure
6691  *
6692  * Close up the VFs and other things in prep for a Core Reset,
6693  * then get ready to rebuild the world.
6694  **/
6695 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6696 {
6697         i40e_prep_for_reset(pf);
6698         i40e_reset_and_rebuild(pf, false);
6699 }
6700
6701 /**
6702  * i40e_handle_mdd_event
6703  * @pf: pointer to the PF structure
6704  *
6705  * Called from the MDD irq handler to identify possibly malicious vfs
6706  **/
6707 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6708 {
6709         struct i40e_hw *hw = &pf->hw;
6710         bool mdd_detected = false;
6711         bool pf_mdd_detected = false;
6712         struct i40e_vf *vf;
6713         u32 reg;
6714         int i;
6715
6716         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6717                 return;
6718
6719         /* find what triggered the MDD event */
6720         reg = rd32(hw, I40E_GL_MDET_TX);
6721         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6722                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6723                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6724                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6725                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6726                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6727                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6728                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6729                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6730                                 pf->hw.func_caps.base_queue;
6731                 if (netif_msg_tx_err(pf))
6732                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6733                                  event, queue, pf_num, vf_num);
6734                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6735                 mdd_detected = true;
6736         }
6737         reg = rd32(hw, I40E_GL_MDET_RX);
6738         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6739                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6740                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6741                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6742                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6743                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6744                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6745                                 pf->hw.func_caps.base_queue;
6746                 if (netif_msg_rx_err(pf))
6747                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6748                                  event, queue, func);
6749                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6750                 mdd_detected = true;
6751         }
6752
6753         if (mdd_detected) {
6754                 reg = rd32(hw, I40E_PF_MDET_TX);
6755                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6756                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6757                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6758                         pf_mdd_detected = true;
6759                 }
6760                 reg = rd32(hw, I40E_PF_MDET_RX);
6761                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6762                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6763                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6764                         pf_mdd_detected = true;
6765                 }
6766                 /* Queue belongs to the PF, initiate a reset */
6767                 if (pf_mdd_detected) {
6768                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6769                         i40e_service_event_schedule(pf);
6770                 }
6771         }
6772
6773         /* see if one of the VFs needs its hand slapped */
6774         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6775                 vf = &(pf->vf[i]);
6776                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6777                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6778                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6779                         vf->num_mdd_events++;
6780                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6781                                  i);
6782                 }
6783
6784                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6785                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6786                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6787                         vf->num_mdd_events++;
6788                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6789                                  i);
6790                 }
6791
6792                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6793                         dev_info(&pf->pdev->dev,
6794                                  "Too many MDD events on VF %d, disabled\n", i);
6795                         dev_info(&pf->pdev->dev,
6796                                  "Use PF Control I/F to re-enable the VF\n");
6797                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6798                 }
6799         }
6800
6801         /* re-enable mdd interrupt cause */
6802         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6803         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6804         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6805         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6806         i40e_flush(hw);
6807 }
6808
6809 #ifdef CONFIG_I40E_VXLAN
6810 /**
6811  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6812  * @pf: board private structure
6813  **/
6814 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6815 {
6816         struct i40e_hw *hw = &pf->hw;
6817         i40e_status ret;
6818         __be16 port;
6819         int i;
6820
6821         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6822                 return;
6823
6824         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6825
6826         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6827                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6828                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6829                         port = pf->vxlan_ports[i];
6830                         if (port)
6831                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6832                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6833                                                      NULL, NULL);
6834                         else
6835                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6836
6837                         if (ret) {
6838                                 dev_info(&pf->pdev->dev,
6839                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6840                                          port ? "add" : "delete",
6841                                          ntohs(port), i,
6842                                          i40e_stat_str(&pf->hw, ret),
6843                                          i40e_aq_str(&pf->hw,
6844                                                     pf->hw.aq.asq_last_status));
6845                                 pf->vxlan_ports[i] = 0;
6846                         }
6847                 }
6848         }
6849 }
6850
6851 #endif
6852 /**
6853  * i40e_service_task - Run the driver's async subtasks
6854  * @work: pointer to work_struct containing our data
6855  **/
6856 static void i40e_service_task(struct work_struct *work)
6857 {
6858         struct i40e_pf *pf = container_of(work,
6859                                           struct i40e_pf,
6860                                           service_task);
6861         unsigned long start_time = jiffies;
6862
6863         /* don't bother with service tasks if a reset is in progress */
6864         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6865                 i40e_service_event_complete(pf);
6866                 return;
6867         }
6868
6869         i40e_detect_recover_hung(pf);
6870         i40e_reset_subtask(pf);
6871         i40e_handle_mdd_event(pf);
6872         i40e_vc_process_vflr_event(pf);
6873         i40e_watchdog_subtask(pf);
6874         i40e_fdir_reinit_subtask(pf);
6875         i40e_sync_filters_subtask(pf);
6876 #ifdef CONFIG_I40E_VXLAN
6877         i40e_sync_vxlan_filters_subtask(pf);
6878 #endif
6879         i40e_clean_adminq_subtask(pf);
6880
6881         i40e_service_event_complete(pf);
6882
6883         /* If the tasks have taken longer than one timer cycle or there
6884          * is more work to be done, reschedule the service task now
6885          * rather than wait for the timer to tick again.
6886          */
6887         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6888             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6889             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6890             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6891                 i40e_service_event_schedule(pf);
6892 }
6893
6894 /**
6895  * i40e_service_timer - timer callback
6896  * @data: pointer to PF struct
6897  **/
6898 static void i40e_service_timer(unsigned long data)
6899 {
6900         struct i40e_pf *pf = (struct i40e_pf *)data;
6901
6902         mod_timer(&pf->service_timer,
6903                   round_jiffies(jiffies + pf->service_timer_period));
6904         i40e_service_event_schedule(pf);
6905 }
6906
6907 /**
6908  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6909  * @vsi: the VSI being configured
6910  **/
6911 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6912 {
6913         struct i40e_pf *pf = vsi->back;
6914
6915         switch (vsi->type) {
6916         case I40E_VSI_MAIN:
6917                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6918                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6919                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6920                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6921                         vsi->num_q_vectors = pf->num_lan_msix;
6922                 else
6923                         vsi->num_q_vectors = 1;
6924
6925                 break;
6926
6927         case I40E_VSI_FDIR:
6928                 vsi->alloc_queue_pairs = 1;
6929                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6930                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6931                 vsi->num_q_vectors = 1;
6932                 break;
6933
6934         case I40E_VSI_VMDQ2:
6935                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6936                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6937                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6938                 vsi->num_q_vectors = pf->num_vmdq_msix;
6939                 break;
6940
6941         case I40E_VSI_SRIOV:
6942                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6943                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6944                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6945                 break;
6946
6947 #ifdef I40E_FCOE
6948         case I40E_VSI_FCOE:
6949                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6950                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6951                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6952                 vsi->num_q_vectors = pf->num_fcoe_msix;
6953                 break;
6954
6955 #endif /* I40E_FCOE */
6956         default:
6957                 WARN_ON(1);
6958                 return -ENODATA;
6959         }
6960
6961         return 0;
6962 }
6963
6964 /**
6965  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6966  * @type: VSI pointer
6967  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6968  *
6969  * On error: returns error code (negative)
6970  * On success: returns 0
6971  **/
6972 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6973 {
6974         int size;
6975         int ret = 0;
6976
6977         /* allocate memory for both Tx and Rx ring pointers */
6978         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6979         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6980         if (!vsi->tx_rings)
6981                 return -ENOMEM;
6982         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6983
6984         if (alloc_qvectors) {
6985                 /* allocate memory for q_vector pointers */
6986                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6987                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6988                 if (!vsi->q_vectors) {
6989                         ret = -ENOMEM;
6990                         goto err_vectors;
6991                 }
6992         }
6993         return ret;
6994
6995 err_vectors:
6996         kfree(vsi->tx_rings);
6997         return ret;
6998 }
6999
7000 /**
7001  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7002  * @pf: board private structure
7003  * @type: type of VSI
7004  *
7005  * On error: returns error code (negative)
7006  * On success: returns vsi index in PF (positive)
7007  **/
7008 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7009 {
7010         int ret = -ENODEV;
7011         struct i40e_vsi *vsi;
7012         int vsi_idx;
7013         int i;
7014
7015         /* Need to protect the allocation of the VSIs at the PF level */
7016         mutex_lock(&pf->switch_mutex);
7017
7018         /* VSI list may be fragmented if VSI creation/destruction has
7019          * been happening.  We can afford to do a quick scan to look
7020          * for any free VSIs in the list.
7021          *
7022          * find next empty vsi slot, looping back around if necessary
7023          */
7024         i = pf->next_vsi;
7025         while (i < pf->num_alloc_vsi && pf->vsi[i])
7026                 i++;
7027         if (i >= pf->num_alloc_vsi) {
7028                 i = 0;
7029                 while (i < pf->next_vsi && pf->vsi[i])
7030                         i++;
7031         }
7032
7033         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7034                 vsi_idx = i;             /* Found one! */
7035         } else {
7036                 ret = -ENODEV;
7037                 goto unlock_pf;  /* out of VSI slots! */
7038         }
7039         pf->next_vsi = ++i;
7040
7041         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7042         if (!vsi) {
7043                 ret = -ENOMEM;
7044                 goto unlock_pf;
7045         }
7046         vsi->type = type;
7047         vsi->back = pf;
7048         set_bit(__I40E_DOWN, &vsi->state);
7049         vsi->flags = 0;
7050         vsi->idx = vsi_idx;
7051         vsi->rx_itr_setting = pf->rx_itr_default;
7052         vsi->tx_itr_setting = pf->tx_itr_default;
7053         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7054                                 pf->rss_table_size : 64;
7055         vsi->netdev_registered = false;
7056         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7057         INIT_LIST_HEAD(&vsi->mac_filter_list);
7058         vsi->irqs_ready = false;
7059
7060         ret = i40e_set_num_rings_in_vsi(vsi);
7061         if (ret)
7062                 goto err_rings;
7063
7064         ret = i40e_vsi_alloc_arrays(vsi, true);
7065         if (ret)
7066                 goto err_rings;
7067
7068         /* Setup default MSIX irq handler for VSI */
7069         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7070
7071         pf->vsi[vsi_idx] = vsi;
7072         ret = vsi_idx;
7073         goto unlock_pf;
7074
7075 err_rings:
7076         pf->next_vsi = i - 1;
7077         kfree(vsi);
7078 unlock_pf:
7079         mutex_unlock(&pf->switch_mutex);
7080         return ret;
7081 }
7082
7083 /**
7084  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7085  * @type: VSI pointer
7086  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7087  *
7088  * On error: returns error code (negative)
7089  * On success: returns 0
7090  **/
7091 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7092 {
7093         /* free the ring and vector containers */
7094         if (free_qvectors) {
7095                 kfree(vsi->q_vectors);
7096                 vsi->q_vectors = NULL;
7097         }
7098         kfree(vsi->tx_rings);
7099         vsi->tx_rings = NULL;
7100         vsi->rx_rings = NULL;
7101 }
7102
7103 /**
7104  * i40e_vsi_clear - Deallocate the VSI provided
7105  * @vsi: the VSI being un-configured
7106  **/
7107 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7108 {
7109         struct i40e_pf *pf;
7110
7111         if (!vsi)
7112                 return 0;
7113
7114         if (!vsi->back)
7115                 goto free_vsi;
7116         pf = vsi->back;
7117
7118         mutex_lock(&pf->switch_mutex);
7119         if (!pf->vsi[vsi->idx]) {
7120                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7121                         vsi->idx, vsi->idx, vsi, vsi->type);
7122                 goto unlock_vsi;
7123         }
7124
7125         if (pf->vsi[vsi->idx] != vsi) {
7126                 dev_err(&pf->pdev->dev,
7127                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7128                         pf->vsi[vsi->idx]->idx,
7129                         pf->vsi[vsi->idx],
7130                         pf->vsi[vsi->idx]->type,
7131                         vsi->idx, vsi, vsi->type);
7132                 goto unlock_vsi;
7133         }
7134
7135         /* updates the PF for this cleared vsi */
7136         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7137         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7138
7139         i40e_vsi_free_arrays(vsi, true);
7140
7141         pf->vsi[vsi->idx] = NULL;
7142         if (vsi->idx < pf->next_vsi)
7143                 pf->next_vsi = vsi->idx;
7144
7145 unlock_vsi:
7146         mutex_unlock(&pf->switch_mutex);
7147 free_vsi:
7148         kfree(vsi);
7149
7150         return 0;
7151 }
7152
7153 /**
7154  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7155  * @vsi: the VSI being cleaned
7156  **/
7157 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7158 {
7159         int i;
7160
7161         if (vsi->tx_rings && vsi->tx_rings[0]) {
7162                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7163                         kfree_rcu(vsi->tx_rings[i], rcu);
7164                         vsi->tx_rings[i] = NULL;
7165                         vsi->rx_rings[i] = NULL;
7166                 }
7167         }
7168 }
7169
7170 /**
7171  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7172  * @vsi: the VSI being configured
7173  **/
7174 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7175 {
7176         struct i40e_ring *tx_ring, *rx_ring;
7177         struct i40e_pf *pf = vsi->back;
7178         int i;
7179
7180         /* Set basic values in the rings to be used later during open() */
7181         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7182                 /* allocate space for both Tx and Rx in one shot */
7183                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7184                 if (!tx_ring)
7185                         goto err_out;
7186
7187                 tx_ring->queue_index = i;
7188                 tx_ring->reg_idx = vsi->base_queue + i;
7189                 tx_ring->ring_active = false;
7190                 tx_ring->vsi = vsi;
7191                 tx_ring->netdev = vsi->netdev;
7192                 tx_ring->dev = &pf->pdev->dev;
7193                 tx_ring->count = vsi->num_desc;
7194                 tx_ring->size = 0;
7195                 tx_ring->dcb_tc = 0;
7196                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7197                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7198                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7199                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7200                 vsi->tx_rings[i] = tx_ring;
7201
7202                 rx_ring = &tx_ring[1];
7203                 rx_ring->queue_index = i;
7204                 rx_ring->reg_idx = vsi->base_queue + i;
7205                 rx_ring->ring_active = false;
7206                 rx_ring->vsi = vsi;
7207                 rx_ring->netdev = vsi->netdev;
7208                 rx_ring->dev = &pf->pdev->dev;
7209                 rx_ring->count = vsi->num_desc;
7210                 rx_ring->size = 0;
7211                 rx_ring->dcb_tc = 0;
7212                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7213                         set_ring_16byte_desc_enabled(rx_ring);
7214                 else
7215                         clear_ring_16byte_desc_enabled(rx_ring);
7216                 vsi->rx_rings[i] = rx_ring;
7217         }
7218
7219         return 0;
7220
7221 err_out:
7222         i40e_vsi_clear_rings(vsi);
7223         return -ENOMEM;
7224 }
7225
7226 /**
7227  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7228  * @pf: board private structure
7229  * @vectors: the number of MSI-X vectors to request
7230  *
7231  * Returns the number of vectors reserved, or error
7232  **/
7233 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7234 {
7235         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7236                                         I40E_MIN_MSIX, vectors);
7237         if (vectors < 0) {
7238                 dev_info(&pf->pdev->dev,
7239                          "MSI-X vector reservation failed: %d\n", vectors);
7240                 vectors = 0;
7241         }
7242
7243         return vectors;
7244 }
7245
7246 /**
7247  * i40e_init_msix - Setup the MSIX capability
7248  * @pf: board private structure
7249  *
7250  * Work with the OS to set up the MSIX vectors needed.
7251  *
7252  * Returns the number of vectors reserved or negative on failure
7253  **/
7254 static int i40e_init_msix(struct i40e_pf *pf)
7255 {
7256         struct i40e_hw *hw = &pf->hw;
7257         int vectors_left;
7258         int v_budget, i;
7259         int v_actual;
7260
7261         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7262                 return -ENODEV;
7263
7264         /* The number of vectors we'll request will be comprised of:
7265          *   - Add 1 for "other" cause for Admin Queue events, etc.
7266          *   - The number of LAN queue pairs
7267          *      - Queues being used for RSS.
7268          *              We don't need as many as max_rss_size vectors.
7269          *              use rss_size instead in the calculation since that
7270          *              is governed by number of cpus in the system.
7271          *      - assumes symmetric Tx/Rx pairing
7272          *   - The number of VMDq pairs
7273 #ifdef I40E_FCOE
7274          *   - The number of FCOE qps.
7275 #endif
7276          * Once we count this up, try the request.
7277          *
7278          * If we can't get what we want, we'll simplify to nearly nothing
7279          * and try again.  If that still fails, we punt.
7280          */
7281         vectors_left = hw->func_caps.num_msix_vectors;
7282         v_budget = 0;
7283
7284         /* reserve one vector for miscellaneous handler */
7285         if (vectors_left) {
7286                 v_budget++;
7287                 vectors_left--;
7288         }
7289
7290         /* reserve vectors for the main PF traffic queues */
7291         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7292         vectors_left -= pf->num_lan_msix;
7293         v_budget += pf->num_lan_msix;
7294
7295         /* reserve one vector for sideband flow director */
7296         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7297                 if (vectors_left) {
7298                         v_budget++;
7299                         vectors_left--;
7300                 } else {
7301                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7302                 }
7303         }
7304
7305 #ifdef I40E_FCOE
7306         /* can we reserve enough for FCoE? */
7307         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7308                 if (!vectors_left)
7309                         pf->num_fcoe_msix = 0;
7310                 else if (vectors_left >= pf->num_fcoe_qps)
7311                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7312                 else
7313                         pf->num_fcoe_msix = 1;
7314                 v_budget += pf->num_fcoe_msix;
7315                 vectors_left -= pf->num_fcoe_msix;
7316         }
7317
7318 #endif
7319         /* any vectors left over go for VMDq support */
7320         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7321                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7322                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7323
7324                 /* if we're short on vectors for what's desired, we limit
7325                  * the queues per vmdq.  If this is still more than are
7326                  * available, the user will need to change the number of
7327                  * queues/vectors used by the PF later with the ethtool
7328                  * channels command
7329                  */
7330                 if (vmdq_vecs < vmdq_vecs_wanted)
7331                         pf->num_vmdq_qps = 1;
7332                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7333
7334                 v_budget += vmdq_vecs;
7335                 vectors_left -= vmdq_vecs;
7336         }
7337
7338         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7339                                    GFP_KERNEL);
7340         if (!pf->msix_entries)
7341                 return -ENOMEM;
7342
7343         for (i = 0; i < v_budget; i++)
7344                 pf->msix_entries[i].entry = i;
7345         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7346
7347         if (v_actual != v_budget) {
7348                 /* If we have limited resources, we will start with no vectors
7349                  * for the special features and then allocate vectors to some
7350                  * of these features based on the policy and at the end disable
7351                  * the features that did not get any vectors.
7352                  */
7353 #ifdef I40E_FCOE
7354                 pf->num_fcoe_qps = 0;
7355                 pf->num_fcoe_msix = 0;
7356 #endif
7357                 pf->num_vmdq_msix = 0;
7358         }
7359
7360         if (v_actual < I40E_MIN_MSIX) {
7361                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7362                 kfree(pf->msix_entries);
7363                 pf->msix_entries = NULL;
7364                 return -ENODEV;
7365
7366         } else if (v_actual == I40E_MIN_MSIX) {
7367                 /* Adjust for minimal MSIX use */
7368                 pf->num_vmdq_vsis = 0;
7369                 pf->num_vmdq_qps = 0;
7370                 pf->num_lan_qps = 1;
7371                 pf->num_lan_msix = 1;
7372
7373         } else if (v_actual != v_budget) {
7374                 int vec;
7375
7376                 /* reserve the misc vector */
7377                 vec = v_actual - 1;
7378
7379                 /* Scale vector usage down */
7380                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7381                 pf->num_vmdq_vsis = 1;
7382                 pf->num_vmdq_qps = 1;
7383                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7384
7385                 /* partition out the remaining vectors */
7386                 switch (vec) {
7387                 case 2:
7388                         pf->num_lan_msix = 1;
7389                         break;
7390                 case 3:
7391 #ifdef I40E_FCOE
7392                         /* give one vector to FCoE */
7393                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7394                                 pf->num_lan_msix = 1;
7395                                 pf->num_fcoe_msix = 1;
7396                         }
7397 #else
7398                         pf->num_lan_msix = 2;
7399 #endif
7400                         break;
7401                 default:
7402 #ifdef I40E_FCOE
7403                         /* give one vector to FCoE */
7404                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7405                                 pf->num_fcoe_msix = 1;
7406                                 vec--;
7407                         }
7408 #endif
7409                         /* give the rest to the PF */
7410                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7411                         break;
7412                 }
7413         }
7414
7415         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7416             (pf->num_vmdq_msix == 0)) {
7417                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7418                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7419         }
7420 #ifdef I40E_FCOE
7421
7422         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7423                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7424                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7425         }
7426 #endif
7427         return v_actual;
7428 }
7429
7430 /**
7431  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7432  * @vsi: the VSI being configured
7433  * @v_idx: index of the vector in the vsi struct
7434  *
7435  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7436  **/
7437 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7438 {
7439         struct i40e_q_vector *q_vector;
7440
7441         /* allocate q_vector */
7442         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7443         if (!q_vector)
7444                 return -ENOMEM;
7445
7446         q_vector->vsi = vsi;
7447         q_vector->v_idx = v_idx;
7448         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7449         if (vsi->netdev)
7450                 netif_napi_add(vsi->netdev, &q_vector->napi,
7451                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7452
7453         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7454         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7455
7456         /* tie q_vector and vsi together */
7457         vsi->q_vectors[v_idx] = q_vector;
7458
7459         return 0;
7460 }
7461
7462 /**
7463  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7464  * @vsi: the VSI being configured
7465  *
7466  * We allocate one q_vector per queue interrupt.  If allocation fails we
7467  * return -ENOMEM.
7468  **/
7469 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7470 {
7471         struct i40e_pf *pf = vsi->back;
7472         int v_idx, num_q_vectors;
7473         int err;
7474
7475         /* if not MSIX, give the one vector only to the LAN VSI */
7476         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7477                 num_q_vectors = vsi->num_q_vectors;
7478         else if (vsi == pf->vsi[pf->lan_vsi])
7479                 num_q_vectors = 1;
7480         else
7481                 return -EINVAL;
7482
7483         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7484                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7485                 if (err)
7486                         goto err_out;
7487         }
7488
7489         return 0;
7490
7491 err_out:
7492         while (v_idx--)
7493                 i40e_free_q_vector(vsi, v_idx);
7494
7495         return err;
7496 }
7497
7498 /**
7499  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7500  * @pf: board private structure to initialize
7501  **/
7502 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7503 {
7504         int vectors = 0;
7505         ssize_t size;
7506
7507         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7508                 vectors = i40e_init_msix(pf);
7509                 if (vectors < 0) {
7510                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7511 #ifdef I40E_FCOE
7512                                        I40E_FLAG_FCOE_ENABLED   |
7513 #endif
7514                                        I40E_FLAG_RSS_ENABLED    |
7515                                        I40E_FLAG_DCB_CAPABLE    |
7516                                        I40E_FLAG_SRIOV_ENABLED  |
7517                                        I40E_FLAG_FD_SB_ENABLED  |
7518                                        I40E_FLAG_FD_ATR_ENABLED |
7519                                        I40E_FLAG_VMDQ_ENABLED);
7520
7521                         /* rework the queue expectations without MSIX */
7522                         i40e_determine_queue_usage(pf);
7523                 }
7524         }
7525
7526         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7527             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7528                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7529                 vectors = pci_enable_msi(pf->pdev);
7530                 if (vectors < 0) {
7531                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7532                                  vectors);
7533                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7534                 }
7535                 vectors = 1;  /* one MSI or Legacy vector */
7536         }
7537
7538         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7539                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7540
7541         /* set up vector assignment tracking */
7542         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7543         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7544         if (!pf->irq_pile) {
7545                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7546                 return -ENOMEM;
7547         }
7548         pf->irq_pile->num_entries = vectors;
7549         pf->irq_pile->search_hint = 0;
7550
7551         /* track first vector for misc interrupts, ignore return */
7552         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7553
7554         return 0;
7555 }
7556
7557 /**
7558  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7559  * @pf: board private structure
7560  *
7561  * This sets up the handler for MSIX 0, which is used to manage the
7562  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7563  * when in MSI or Legacy interrupt mode.
7564  **/
7565 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7566 {
7567         struct i40e_hw *hw = &pf->hw;
7568         int err = 0;
7569
7570         /* Only request the irq if this is the first time through, and
7571          * not when we're rebuilding after a Reset
7572          */
7573         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7574                 err = request_irq(pf->msix_entries[0].vector,
7575                                   i40e_intr, 0, pf->int_name, pf);
7576                 if (err) {
7577                         dev_info(&pf->pdev->dev,
7578                                  "request_irq for %s failed: %d\n",
7579                                  pf->int_name, err);
7580                         return -EFAULT;
7581                 }
7582         }
7583
7584         i40e_enable_misc_int_causes(pf);
7585
7586         /* associate no queues to the misc vector */
7587         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7588         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7589
7590         i40e_flush(hw);
7591
7592         i40e_irq_dynamic_enable_icr0(pf);
7593
7594         return err;
7595 }
7596
7597 /**
7598  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7599  * @vsi: vsi structure
7600  * @seed: RSS hash seed
7601  **/
7602 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7603 {
7604         struct i40e_aqc_get_set_rss_key_data rss_key;
7605         struct i40e_pf *pf = vsi->back;
7606         struct i40e_hw *hw = &pf->hw;
7607         bool pf_lut = false;
7608         u8 *rss_lut;
7609         int ret, i;
7610
7611         memset(&rss_key, 0, sizeof(rss_key));
7612         memcpy(&rss_key, seed, sizeof(rss_key));
7613
7614         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7615         if (!rss_lut)
7616                 return -ENOMEM;
7617
7618         /* Populate the LUT with max no. of queues in round robin fashion */
7619         for (i = 0; i < vsi->rss_table_size; i++)
7620                 rss_lut[i] = i % vsi->rss_size;
7621
7622         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7623         if (ret) {
7624                 dev_info(&pf->pdev->dev,
7625                          "Cannot set RSS key, err %s aq_err %s\n",
7626                          i40e_stat_str(&pf->hw, ret),
7627                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7628                 goto config_rss_aq_out;
7629         }
7630
7631         if (vsi->type == I40E_VSI_MAIN)
7632                 pf_lut = true;
7633
7634         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7635                                   vsi->rss_table_size);
7636         if (ret)
7637                 dev_info(&pf->pdev->dev,
7638                          "Cannot set RSS lut, err %s aq_err %s\n",
7639                          i40e_stat_str(&pf->hw, ret),
7640                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7641
7642 config_rss_aq_out:
7643         kfree(rss_lut);
7644         return ret;
7645 }
7646
7647 /**
7648  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7649  * @vsi: VSI structure
7650  **/
7651 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7652 {
7653         u8 seed[I40E_HKEY_ARRAY_SIZE];
7654         struct i40e_pf *pf = vsi->back;
7655
7656         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7657         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7658
7659         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7660                 return i40e_config_rss_aq(vsi, seed);
7661
7662         return 0;
7663 }
7664
7665 /**
7666  * i40e_config_rss_reg - Prepare for RSS if used
7667  * @pf: board private structure
7668  * @seed: RSS hash seed
7669  **/
7670 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7671 {
7672         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7673         struct i40e_hw *hw = &pf->hw;
7674         u32 *seed_dw = (u32 *)seed;
7675         u32 current_queue = 0;
7676         u32 lut = 0;
7677         int i, j;
7678
7679         /* Fill out hash function seed */
7680         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7681                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7682
7683         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7684                 lut = 0;
7685                 for (j = 0; j < 4; j++) {
7686                         if (current_queue == vsi->rss_size)
7687                                 current_queue = 0;
7688                         lut |= ((current_queue) << (8 * j));
7689                         current_queue++;
7690                 }
7691                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7692         }
7693         i40e_flush(hw);
7694
7695         return 0;
7696 }
7697
7698 /**
7699  * i40e_config_rss - Prepare for RSS if used
7700  * @pf: board private structure
7701  **/
7702 static int i40e_config_rss(struct i40e_pf *pf)
7703 {
7704         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7705         u8 seed[I40E_HKEY_ARRAY_SIZE];
7706         struct i40e_hw *hw = &pf->hw;
7707         u32 reg_val;
7708         u64 hena;
7709
7710         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7711
7712         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7713         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7714                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7715         hena |= i40e_pf_get_default_rss_hena(pf);
7716
7717         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7718         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7719
7720         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7721
7722         /* Determine the RSS table size based on the hardware capabilities */
7723         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7724         reg_val = (pf->rss_table_size == 512) ?
7725                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7726                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7727         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7728
7729         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7730                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7731         else
7732                 return i40e_config_rss_reg(pf, seed);
7733 }
7734
7735 /**
7736  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7737  * @pf: board private structure
7738  * @queue_count: the requested queue count for rss.
7739  *
7740  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7741  * count which may be different from the requested queue count.
7742  **/
7743 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7744 {
7745         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7746         int new_rss_size;
7747
7748         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7749                 return 0;
7750
7751         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7752
7753         if (queue_count != vsi->num_queue_pairs) {
7754                 vsi->req_queue_pairs = queue_count;
7755                 i40e_prep_for_reset(pf);
7756
7757                 pf->rss_size = new_rss_size;
7758
7759                 i40e_reset_and_rebuild(pf, true);
7760                 i40e_config_rss(pf);
7761         }
7762         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7763         return pf->rss_size;
7764 }
7765
7766 /**
7767  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7768  * @pf: board private structure
7769  **/
7770 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7771 {
7772         i40e_status status;
7773         bool min_valid, max_valid;
7774         u32 max_bw, min_bw;
7775
7776         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7777                                            &min_valid, &max_valid);
7778
7779         if (!status) {
7780                 if (min_valid)
7781                         pf->npar_min_bw = min_bw;
7782                 if (max_valid)
7783                         pf->npar_max_bw = max_bw;
7784         }
7785
7786         return status;
7787 }
7788
7789 /**
7790  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7791  * @pf: board private structure
7792  **/
7793 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7794 {
7795         struct i40e_aqc_configure_partition_bw_data bw_data;
7796         i40e_status status;
7797
7798         /* Set the valid bit for this PF */
7799         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7800         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7801         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7802
7803         /* Set the new bandwidths */
7804         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7805
7806         return status;
7807 }
7808
7809 /**
7810  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7811  * @pf: board private structure
7812  **/
7813 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7814 {
7815         /* Commit temporary BW setting to permanent NVM image */
7816         enum i40e_admin_queue_err last_aq_status;
7817         i40e_status ret;
7818         u16 nvm_word;
7819
7820         if (pf->hw.partition_id != 1) {
7821                 dev_info(&pf->pdev->dev,
7822                          "Commit BW only works on partition 1! This is partition %d",
7823                          pf->hw.partition_id);
7824                 ret = I40E_NOT_SUPPORTED;
7825                 goto bw_commit_out;
7826         }
7827
7828         /* Acquire NVM for read access */
7829         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7830         last_aq_status = pf->hw.aq.asq_last_status;
7831         if (ret) {
7832                 dev_info(&pf->pdev->dev,
7833                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7834                          i40e_stat_str(&pf->hw, ret),
7835                          i40e_aq_str(&pf->hw, last_aq_status));
7836                 goto bw_commit_out;
7837         }
7838
7839         /* Read word 0x10 of NVM - SW compatibility word 1 */
7840         ret = i40e_aq_read_nvm(&pf->hw,
7841                                I40E_SR_NVM_CONTROL_WORD,
7842                                0x10, sizeof(nvm_word), &nvm_word,
7843                                false, NULL);
7844         /* Save off last admin queue command status before releasing
7845          * the NVM
7846          */
7847         last_aq_status = pf->hw.aq.asq_last_status;
7848         i40e_release_nvm(&pf->hw);
7849         if (ret) {
7850                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7851                          i40e_stat_str(&pf->hw, ret),
7852                          i40e_aq_str(&pf->hw, last_aq_status));
7853                 goto bw_commit_out;
7854         }
7855
7856         /* Wait a bit for NVM release to complete */
7857         msleep(50);
7858
7859         /* Acquire NVM for write access */
7860         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7861         last_aq_status = pf->hw.aq.asq_last_status;
7862         if (ret) {
7863                 dev_info(&pf->pdev->dev,
7864                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7865                          i40e_stat_str(&pf->hw, ret),
7866                          i40e_aq_str(&pf->hw, last_aq_status));
7867                 goto bw_commit_out;
7868         }
7869         /* Write it back out unchanged to initiate update NVM,
7870          * which will force a write of the shadow (alt) RAM to
7871          * the NVM - thus storing the bandwidth values permanently.
7872          */
7873         ret = i40e_aq_update_nvm(&pf->hw,
7874                                  I40E_SR_NVM_CONTROL_WORD,
7875                                  0x10, sizeof(nvm_word),
7876                                  &nvm_word, true, NULL);
7877         /* Save off last admin queue command status before releasing
7878          * the NVM
7879          */
7880         last_aq_status = pf->hw.aq.asq_last_status;
7881         i40e_release_nvm(&pf->hw);
7882         if (ret)
7883                 dev_info(&pf->pdev->dev,
7884                          "BW settings NOT SAVED, err %s aq_err %s\n",
7885                          i40e_stat_str(&pf->hw, ret),
7886                          i40e_aq_str(&pf->hw, last_aq_status));
7887 bw_commit_out:
7888
7889         return ret;
7890 }
7891
7892 /**
7893  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7894  * @pf: board private structure to initialize
7895  *
7896  * i40e_sw_init initializes the Adapter private data structure.
7897  * Fields are initialized based on PCI device information and
7898  * OS network device settings (MTU size).
7899  **/
7900 static int i40e_sw_init(struct i40e_pf *pf)
7901 {
7902         int err = 0;
7903         int size;
7904
7905         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7906                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7907         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7908         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7909                 if (I40E_DEBUG_USER & debug)
7910                         pf->hw.debug_mask = debug;
7911                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7912                                                 I40E_DEFAULT_MSG_ENABLE);
7913         }
7914
7915         /* Set default capability flags */
7916         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7917                     I40E_FLAG_MSI_ENABLED     |
7918                     I40E_FLAG_MSIX_ENABLED;
7919
7920         if (iommu_present(&pci_bus_type))
7921                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7922         else
7923                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7924
7925         /* Set default ITR */
7926         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7927         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7928
7929         /* Depending on PF configurations, it is possible that the RSS
7930          * maximum might end up larger than the available queues
7931          */
7932         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7933         pf->rss_size = 1;
7934         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7935         pf->rss_size_max = min_t(int, pf->rss_size_max,
7936                                  pf->hw.func_caps.num_tx_qp);
7937         if (pf->hw.func_caps.rss) {
7938                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7939                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7940         }
7941
7942         /* MFP mode enabled */
7943         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7944                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7945                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7946                 if (i40e_get_npar_bw_setting(pf))
7947                         dev_warn(&pf->pdev->dev,
7948                                  "Could not get NPAR bw settings\n");
7949                 else
7950                         dev_info(&pf->pdev->dev,
7951                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7952                                  pf->npar_min_bw, pf->npar_max_bw);
7953         }
7954
7955         /* FW/NVM is not yet fixed in this regard */
7956         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7957             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7958                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7959                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7960                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7961                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7962                 } else {
7963                         dev_info(&pf->pdev->dev,
7964                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7965                 }
7966                 pf->fdir_pf_filter_count =
7967                                  pf->hw.func_caps.fd_filters_guaranteed;
7968                 pf->hw.fdir_shared_filter_count =
7969                                  pf->hw.func_caps.fd_filters_best_effort;
7970         }
7971
7972         if (pf->hw.func_caps.vmdq) {
7973                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7974                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7975         }
7976
7977 #ifdef I40E_FCOE
7978         err = i40e_init_pf_fcoe(pf);
7979         if (err)
7980                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7981
7982 #endif /* I40E_FCOE */
7983 #ifdef CONFIG_PCI_IOV
7984         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7985                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7986                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7987                 pf->num_req_vfs = min_t(int,
7988                                         pf->hw.func_caps.num_vfs,
7989                                         I40E_MAX_VF_COUNT);
7990         }
7991 #endif /* CONFIG_PCI_IOV */
7992         if (pf->hw.mac.type == I40E_MAC_X722) {
7993                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7994                              I40E_FLAG_128_QP_RSS_CAPABLE |
7995                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7996                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7997                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7998                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7999         }
8000         pf->eeprom_version = 0xDEAD;
8001         pf->lan_veb = I40E_NO_VEB;
8002         pf->lan_vsi = I40E_NO_VSI;
8003
8004         /* By default FW has this off for performance reasons */
8005         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8006
8007         /* set up queue assignment tracking */
8008         size = sizeof(struct i40e_lump_tracking)
8009                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8010         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8011         if (!pf->qp_pile) {
8012                 err = -ENOMEM;
8013                 goto sw_init_done;
8014         }
8015         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8016         pf->qp_pile->search_hint = 0;
8017
8018         pf->tx_timeout_recovery_level = 1;
8019
8020         mutex_init(&pf->switch_mutex);
8021
8022         /* If NPAR is enabled nudge the Tx scheduler */
8023         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8024                 i40e_set_npar_bw_setting(pf);
8025
8026 sw_init_done:
8027         return err;
8028 }
8029
8030 /**
8031  * i40e_set_ntuple - set the ntuple feature flag and take action
8032  * @pf: board private structure to initialize
8033  * @features: the feature set that the stack is suggesting
8034  *
8035  * returns a bool to indicate if reset needs to happen
8036  **/
8037 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8038 {
8039         bool need_reset = false;
8040
8041         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8042          * the state changed, we need to reset.
8043          */
8044         if (features & NETIF_F_NTUPLE) {
8045                 /* Enable filters and mark for reset */
8046                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8047                         need_reset = true;
8048                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8049         } else {
8050                 /* turn off filters, mark for reset and clear SW filter list */
8051                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8052                         need_reset = true;
8053                         i40e_fdir_filter_exit(pf);
8054                 }
8055                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8056                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8057                 /* reset fd counters */
8058                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8059                 pf->fdir_pf_active_filters = 0;
8060                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8061                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8062                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8063                 /* if ATR was auto disabled it can be re-enabled. */
8064                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8065                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8066                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8067         }
8068         return need_reset;
8069 }
8070
8071 /**
8072  * i40e_set_features - set the netdev feature flags
8073  * @netdev: ptr to the netdev being adjusted
8074  * @features: the feature set that the stack is suggesting
8075  **/
8076 static int i40e_set_features(struct net_device *netdev,
8077                              netdev_features_t features)
8078 {
8079         struct i40e_netdev_priv *np = netdev_priv(netdev);
8080         struct i40e_vsi *vsi = np->vsi;
8081         struct i40e_pf *pf = vsi->back;
8082         bool need_reset;
8083
8084         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8085                 i40e_vlan_stripping_enable(vsi);
8086         else
8087                 i40e_vlan_stripping_disable(vsi);
8088
8089         need_reset = i40e_set_ntuple(pf, features);
8090
8091         if (need_reset)
8092                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8093
8094         return 0;
8095 }
8096
8097 #ifdef CONFIG_I40E_VXLAN
8098 /**
8099  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8100  * @pf: board private structure
8101  * @port: The UDP port to look up
8102  *
8103  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8104  **/
8105 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8106 {
8107         u8 i;
8108
8109         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8110                 if (pf->vxlan_ports[i] == port)
8111                         return i;
8112         }
8113
8114         return i;
8115 }
8116
8117 /**
8118  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8119  * @netdev: This physical port's netdev
8120  * @sa_family: Socket Family that VXLAN is notifying us about
8121  * @port: New UDP port number that VXLAN started listening to
8122  **/
8123 static void i40e_add_vxlan_port(struct net_device *netdev,
8124                                 sa_family_t sa_family, __be16 port)
8125 {
8126         struct i40e_netdev_priv *np = netdev_priv(netdev);
8127         struct i40e_vsi *vsi = np->vsi;
8128         struct i40e_pf *pf = vsi->back;
8129         u8 next_idx;
8130         u8 idx;
8131
8132         if (sa_family == AF_INET6)
8133                 return;
8134
8135         idx = i40e_get_vxlan_port_idx(pf, port);
8136
8137         /* Check if port already exists */
8138         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8139                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8140                             ntohs(port));
8141                 return;
8142         }
8143
8144         /* Now check if there is space to add the new port */
8145         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8146
8147         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8148                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8149                             ntohs(port));
8150                 return;
8151         }
8152
8153         /* New port: add it and mark its index in the bitmap */
8154         pf->vxlan_ports[next_idx] = port;
8155         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8156         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8157 }
8158
8159 /**
8160  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8161  * @netdev: This physical port's netdev
8162  * @sa_family: Socket Family that VXLAN is notifying us about
8163  * @port: UDP port number that VXLAN stopped listening to
8164  **/
8165 static void i40e_del_vxlan_port(struct net_device *netdev,
8166                                 sa_family_t sa_family, __be16 port)
8167 {
8168         struct i40e_netdev_priv *np = netdev_priv(netdev);
8169         struct i40e_vsi *vsi = np->vsi;
8170         struct i40e_pf *pf = vsi->back;
8171         u8 idx;
8172
8173         if (sa_family == AF_INET6)
8174                 return;
8175
8176         idx = i40e_get_vxlan_port_idx(pf, port);
8177
8178         /* Check if port already exists */
8179         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8180                 /* if port exists, set it to 0 (mark for deletion)
8181                  * and make it pending
8182                  */
8183                 pf->vxlan_ports[idx] = 0;
8184                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8185                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8186         } else {
8187                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8188                             ntohs(port));
8189         }
8190 }
8191
8192 #endif
8193 static int i40e_get_phys_port_id(struct net_device *netdev,
8194                                  struct netdev_phys_item_id *ppid)
8195 {
8196         struct i40e_netdev_priv *np = netdev_priv(netdev);
8197         struct i40e_pf *pf = np->vsi->back;
8198         struct i40e_hw *hw = &pf->hw;
8199
8200         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8201                 return -EOPNOTSUPP;
8202
8203         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8204         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8205
8206         return 0;
8207 }
8208
8209 /**
8210  * i40e_ndo_fdb_add - add an entry to the hardware database
8211  * @ndm: the input from the stack
8212  * @tb: pointer to array of nladdr (unused)
8213  * @dev: the net device pointer
8214  * @addr: the MAC address entry being added
8215  * @flags: instructions from stack about fdb operation
8216  */
8217 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8218                             struct net_device *dev,
8219                             const unsigned char *addr, u16 vid,
8220                             u16 flags)
8221 {
8222         struct i40e_netdev_priv *np = netdev_priv(dev);
8223         struct i40e_pf *pf = np->vsi->back;
8224         int err = 0;
8225
8226         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8227                 return -EOPNOTSUPP;
8228
8229         if (vid) {
8230                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8231                 return -EINVAL;
8232         }
8233
8234         /* Hardware does not support aging addresses so if a
8235          * ndm_state is given only allow permanent addresses
8236          */
8237         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8238                 netdev_info(dev, "FDB only supports static addresses\n");
8239                 return -EINVAL;
8240         }
8241
8242         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8243                 err = dev_uc_add_excl(dev, addr);
8244         else if (is_multicast_ether_addr(addr))
8245                 err = dev_mc_add_excl(dev, addr);
8246         else
8247                 err = -EINVAL;
8248
8249         /* Only return duplicate errors if NLM_F_EXCL is set */
8250         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8251                 err = 0;
8252
8253         return err;
8254 }
8255
8256 /**
8257  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8258  * @dev: the netdev being configured
8259  * @nlh: RTNL message
8260  *
8261  * Inserts a new hardware bridge if not already created and
8262  * enables the bridging mode requested (VEB or VEPA). If the
8263  * hardware bridge has already been inserted and the request
8264  * is to change the mode then that requires a PF reset to
8265  * allow rebuild of the components with required hardware
8266  * bridge mode enabled.
8267  **/
8268 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8269                                    struct nlmsghdr *nlh,
8270                                    u16 flags)
8271 {
8272         struct i40e_netdev_priv *np = netdev_priv(dev);
8273         struct i40e_vsi *vsi = np->vsi;
8274         struct i40e_pf *pf = vsi->back;
8275         struct i40e_veb *veb = NULL;
8276         struct nlattr *attr, *br_spec;
8277         int i, rem;
8278
8279         /* Only for PF VSI for now */
8280         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8281                 return -EOPNOTSUPP;
8282
8283         /* Find the HW bridge for PF VSI */
8284         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8285                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8286                         veb = pf->veb[i];
8287         }
8288
8289         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8290
8291         nla_for_each_nested(attr, br_spec, rem) {
8292                 __u16 mode;
8293
8294                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8295                         continue;
8296
8297                 mode = nla_get_u16(attr);
8298                 if ((mode != BRIDGE_MODE_VEPA) &&
8299                     (mode != BRIDGE_MODE_VEB))
8300                         return -EINVAL;
8301
8302                 /* Insert a new HW bridge */
8303                 if (!veb) {
8304                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8305                                              vsi->tc_config.enabled_tc);
8306                         if (veb) {
8307                                 veb->bridge_mode = mode;
8308                                 i40e_config_bridge_mode(veb);
8309                         } else {
8310                                 /* No Bridge HW offload available */
8311                                 return -ENOENT;
8312                         }
8313                         break;
8314                 } else if (mode != veb->bridge_mode) {
8315                         /* Existing HW bridge but different mode needs reset */
8316                         veb->bridge_mode = mode;
8317                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8318                         if (mode == BRIDGE_MODE_VEB)
8319                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8320                         else
8321                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8322                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8323                         break;
8324                 }
8325         }
8326
8327         return 0;
8328 }
8329
8330 /**
8331  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8332  * @skb: skb buff
8333  * @pid: process id
8334  * @seq: RTNL message seq #
8335  * @dev: the netdev being configured
8336  * @filter_mask: unused
8337  *
8338  * Return the mode in which the hardware bridge is operating in
8339  * i.e VEB or VEPA.
8340  **/
8341 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8342                                    struct net_device *dev,
8343                                    u32 filter_mask, int nlflags)
8344 {
8345         struct i40e_netdev_priv *np = netdev_priv(dev);
8346         struct i40e_vsi *vsi = np->vsi;
8347         struct i40e_pf *pf = vsi->back;
8348         struct i40e_veb *veb = NULL;
8349         int i;
8350
8351         /* Only for PF VSI for now */
8352         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8353                 return -EOPNOTSUPP;
8354
8355         /* Find the HW bridge for the PF VSI */
8356         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8357                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8358                         veb = pf->veb[i];
8359         }
8360
8361         if (!veb)
8362                 return 0;
8363
8364         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8365                                        nlflags, 0, 0, filter_mask, NULL);
8366 }
8367
8368 #define I40E_MAX_TUNNEL_HDR_LEN 80
8369 /**
8370  * i40e_features_check - Validate encapsulated packet conforms to limits
8371  * @skb: skb buff
8372  * @netdev: This physical port's netdev
8373  * @features: Offload features that the stack believes apply
8374  **/
8375 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8376                                              struct net_device *dev,
8377                                              netdev_features_t features)
8378 {
8379         if (skb->encapsulation &&
8380             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8381              I40E_MAX_TUNNEL_HDR_LEN))
8382                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8383
8384         return features;
8385 }
8386
8387 static const struct net_device_ops i40e_netdev_ops = {
8388         .ndo_open               = i40e_open,
8389         .ndo_stop               = i40e_close,
8390         .ndo_start_xmit         = i40e_lan_xmit_frame,
8391         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8392         .ndo_set_rx_mode        = i40e_set_rx_mode,
8393         .ndo_validate_addr      = eth_validate_addr,
8394         .ndo_set_mac_address    = i40e_set_mac,
8395         .ndo_change_mtu         = i40e_change_mtu,
8396         .ndo_do_ioctl           = i40e_ioctl,
8397         .ndo_tx_timeout         = i40e_tx_timeout,
8398         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8399         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8400 #ifdef CONFIG_NET_POLL_CONTROLLER
8401         .ndo_poll_controller    = i40e_netpoll,
8402 #endif
8403         .ndo_setup_tc           = i40e_setup_tc,
8404 #ifdef I40E_FCOE
8405         .ndo_fcoe_enable        = i40e_fcoe_enable,
8406         .ndo_fcoe_disable       = i40e_fcoe_disable,
8407 #endif
8408         .ndo_set_features       = i40e_set_features,
8409         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8410         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8411         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8412         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8413         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8414         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8415 #ifdef CONFIG_I40E_VXLAN
8416         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8417         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8418 #endif
8419         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8420         .ndo_fdb_add            = i40e_ndo_fdb_add,
8421         .ndo_features_check     = i40e_features_check,
8422         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8423         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8424 };
8425
8426 /**
8427  * i40e_config_netdev - Setup the netdev flags
8428  * @vsi: the VSI being configured
8429  *
8430  * Returns 0 on success, negative value on failure
8431  **/
8432 static int i40e_config_netdev(struct i40e_vsi *vsi)
8433 {
8434         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8435         struct i40e_pf *pf = vsi->back;
8436         struct i40e_hw *hw = &pf->hw;
8437         struct i40e_netdev_priv *np;
8438         struct net_device *netdev;
8439         u8 mac_addr[ETH_ALEN];
8440         int etherdev_size;
8441
8442         etherdev_size = sizeof(struct i40e_netdev_priv);
8443         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8444         if (!netdev)
8445                 return -ENOMEM;
8446
8447         vsi->netdev = netdev;
8448         np = netdev_priv(netdev);
8449         np->vsi = vsi;
8450
8451         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8452                                   NETIF_F_GSO_UDP_TUNNEL |
8453                                   NETIF_F_TSO;
8454
8455         netdev->features = NETIF_F_SG                  |
8456                            NETIF_F_IP_CSUM             |
8457                            NETIF_F_SCTP_CSUM           |
8458                            NETIF_F_HIGHDMA             |
8459                            NETIF_F_GSO_UDP_TUNNEL      |
8460                            NETIF_F_HW_VLAN_CTAG_TX     |
8461                            NETIF_F_HW_VLAN_CTAG_RX     |
8462                            NETIF_F_HW_VLAN_CTAG_FILTER |
8463                            NETIF_F_IPV6_CSUM           |
8464                            NETIF_F_TSO                 |
8465                            NETIF_F_TSO_ECN             |
8466                            NETIF_F_TSO6                |
8467                            NETIF_F_RXCSUM              |
8468                            NETIF_F_RXHASH              |
8469                            0;
8470
8471         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8472                 netdev->features |= NETIF_F_NTUPLE;
8473
8474         /* copy netdev features into list of user selectable features */
8475         netdev->hw_features |= netdev->features;
8476
8477         if (vsi->type == I40E_VSI_MAIN) {
8478                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8479                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8480                 /* The following steps are necessary to prevent reception
8481                  * of tagged packets - some older NVM configurations load a
8482                  * default a MAC-VLAN filter that accepts any tagged packet
8483                  * which must be replaced by a normal filter.
8484                  */
8485                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8486                         i40e_add_filter(vsi, mac_addr,
8487                                         I40E_VLAN_ANY, false, true);
8488         } else {
8489                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8490                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8491                          pf->vsi[pf->lan_vsi]->netdev->name);
8492                 random_ether_addr(mac_addr);
8493                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8494         }
8495         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8496
8497         ether_addr_copy(netdev->dev_addr, mac_addr);
8498         ether_addr_copy(netdev->perm_addr, mac_addr);
8499         /* vlan gets same features (except vlan offload)
8500          * after any tweaks for specific VSI types
8501          */
8502         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8503                                                      NETIF_F_HW_VLAN_CTAG_RX |
8504                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8505         netdev->priv_flags |= IFF_UNICAST_FLT;
8506         netdev->priv_flags |= IFF_SUPP_NOFCS;
8507         /* Setup netdev TC information */
8508         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8509
8510         netdev->netdev_ops = &i40e_netdev_ops;
8511         netdev->watchdog_timeo = 5 * HZ;
8512         i40e_set_ethtool_ops(netdev);
8513 #ifdef I40E_FCOE
8514         i40e_fcoe_config_netdev(netdev, vsi);
8515 #endif
8516
8517         return 0;
8518 }
8519
8520 /**
8521  * i40e_vsi_delete - Delete a VSI from the switch
8522  * @vsi: the VSI being removed
8523  *
8524  * Returns 0 on success, negative value on failure
8525  **/
8526 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8527 {
8528         /* remove default VSI is not allowed */
8529         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8530                 return;
8531
8532         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8533 }
8534
8535 /**
8536  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8537  * @vsi: the VSI being queried
8538  *
8539  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8540  **/
8541 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8542 {
8543         struct i40e_veb *veb;
8544         struct i40e_pf *pf = vsi->back;
8545
8546         /* Uplink is not a bridge so default to VEB */
8547         if (vsi->veb_idx == I40E_NO_VEB)
8548                 return 1;
8549
8550         veb = pf->veb[vsi->veb_idx];
8551         /* Uplink is a bridge in VEPA mode */
8552         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8553                 return 0;
8554
8555         /* Uplink is a bridge in VEB mode */
8556         return 1;
8557 }
8558
8559 /**
8560  * i40e_add_vsi - Add a VSI to the switch
8561  * @vsi: the VSI being configured
8562  *
8563  * This initializes a VSI context depending on the VSI type to be added and
8564  * passes it down to the add_vsi aq command.
8565  **/
8566 static int i40e_add_vsi(struct i40e_vsi *vsi)
8567 {
8568         int ret = -ENODEV;
8569         struct i40e_mac_filter *f, *ftmp;
8570         struct i40e_pf *pf = vsi->back;
8571         struct i40e_hw *hw = &pf->hw;
8572         struct i40e_vsi_context ctxt;
8573         u8 enabled_tc = 0x1; /* TC0 enabled */
8574         int f_count = 0;
8575
8576         memset(&ctxt, 0, sizeof(ctxt));
8577         switch (vsi->type) {
8578         case I40E_VSI_MAIN:
8579                 /* The PF's main VSI is already setup as part of the
8580                  * device initialization, so we'll not bother with
8581                  * the add_vsi call, but we will retrieve the current
8582                  * VSI context.
8583                  */
8584                 ctxt.seid = pf->main_vsi_seid;
8585                 ctxt.pf_num = pf->hw.pf_id;
8586                 ctxt.vf_num = 0;
8587                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8588                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8589                 if (ret) {
8590                         dev_info(&pf->pdev->dev,
8591                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8592                                  i40e_stat_str(&pf->hw, ret),
8593                                  i40e_aq_str(&pf->hw,
8594                                              pf->hw.aq.asq_last_status));
8595                         return -ENOENT;
8596                 }
8597                 vsi->info = ctxt.info;
8598                 vsi->info.valid_sections = 0;
8599
8600                 vsi->seid = ctxt.seid;
8601                 vsi->id = ctxt.vsi_number;
8602
8603                 enabled_tc = i40e_pf_get_tc_map(pf);
8604
8605                 /* MFP mode setup queue map and update VSI */
8606                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8607                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8608                         memset(&ctxt, 0, sizeof(ctxt));
8609                         ctxt.seid = pf->main_vsi_seid;
8610                         ctxt.pf_num = pf->hw.pf_id;
8611                         ctxt.vf_num = 0;
8612                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8613                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8614                         if (ret) {
8615                                 dev_info(&pf->pdev->dev,
8616                                          "update vsi failed, err %s aq_err %s\n",
8617                                          i40e_stat_str(&pf->hw, ret),
8618                                          i40e_aq_str(&pf->hw,
8619                                                     pf->hw.aq.asq_last_status));
8620                                 ret = -ENOENT;
8621                                 goto err;
8622                         }
8623                         /* update the local VSI info queue map */
8624                         i40e_vsi_update_queue_map(vsi, &ctxt);
8625                         vsi->info.valid_sections = 0;
8626                 } else {
8627                         /* Default/Main VSI is only enabled for TC0
8628                          * reconfigure it to enable all TCs that are
8629                          * available on the port in SFP mode.
8630                          * For MFP case the iSCSI PF would use this
8631                          * flow to enable LAN+iSCSI TC.
8632                          */
8633                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8634                         if (ret) {
8635                                 dev_info(&pf->pdev->dev,
8636                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8637                                          enabled_tc,
8638                                          i40e_stat_str(&pf->hw, ret),
8639                                          i40e_aq_str(&pf->hw,
8640                                                     pf->hw.aq.asq_last_status));
8641                                 ret = -ENOENT;
8642                         }
8643                 }
8644                 break;
8645
8646         case I40E_VSI_FDIR:
8647                 ctxt.pf_num = hw->pf_id;
8648                 ctxt.vf_num = 0;
8649                 ctxt.uplink_seid = vsi->uplink_seid;
8650                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8651                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8652                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8653                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8654                         ctxt.info.valid_sections |=
8655                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8656                         ctxt.info.switch_id =
8657                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8658                 }
8659                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8660                 break;
8661
8662         case I40E_VSI_VMDQ2:
8663                 ctxt.pf_num = hw->pf_id;
8664                 ctxt.vf_num = 0;
8665                 ctxt.uplink_seid = vsi->uplink_seid;
8666                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8667                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8668
8669                 /* This VSI is connected to VEB so the switch_id
8670                  * should be set to zero by default.
8671                  */
8672                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8673                         ctxt.info.valid_sections |=
8674                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8675                         ctxt.info.switch_id =
8676                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8677                 }
8678
8679                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8680                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8681                 break;
8682
8683         case I40E_VSI_SRIOV:
8684                 ctxt.pf_num = hw->pf_id;
8685                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8686                 ctxt.uplink_seid = vsi->uplink_seid;
8687                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8688                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8689
8690                 /* This VSI is connected to VEB so the switch_id
8691                  * should be set to zero by default.
8692                  */
8693                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8694                         ctxt.info.valid_sections |=
8695                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8696                         ctxt.info.switch_id =
8697                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8698                 }
8699
8700                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8701                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8702                 if (pf->vf[vsi->vf_id].spoofchk) {
8703                         ctxt.info.valid_sections |=
8704                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8705                         ctxt.info.sec_flags |=
8706                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8707                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8708                 }
8709                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8710                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8711                 break;
8712
8713 #ifdef I40E_FCOE
8714         case I40E_VSI_FCOE:
8715                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8716                 if (ret) {
8717                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8718                         return ret;
8719                 }
8720                 break;
8721
8722 #endif /* I40E_FCOE */
8723         default:
8724                 return -ENODEV;
8725         }
8726
8727         if (vsi->type != I40E_VSI_MAIN) {
8728                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8729                 if (ret) {
8730                         dev_info(&vsi->back->pdev->dev,
8731                                  "add vsi failed, err %s aq_err %s\n",
8732                                  i40e_stat_str(&pf->hw, ret),
8733                                  i40e_aq_str(&pf->hw,
8734                                              pf->hw.aq.asq_last_status));
8735                         ret = -ENOENT;
8736                         goto err;
8737                 }
8738                 vsi->info = ctxt.info;
8739                 vsi->info.valid_sections = 0;
8740                 vsi->seid = ctxt.seid;
8741                 vsi->id = ctxt.vsi_number;
8742         }
8743
8744         /* If macvlan filters already exist, force them to get loaded */
8745         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8746                 f->changed = true;
8747                 f_count++;
8748
8749                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8750                         struct i40e_aqc_remove_macvlan_element_data element;
8751
8752                         memset(&element, 0, sizeof(element));
8753                         ether_addr_copy(element.mac_addr, f->macaddr);
8754                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8755                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8756                                                      &element, 1, NULL);
8757                         if (ret) {
8758                                 /* some older FW has a different default */
8759                                 element.flags |=
8760                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8761                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8762                                                        &element, 1, NULL);
8763                         }
8764
8765                         i40e_aq_mac_address_write(hw,
8766                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8767                                                   f->macaddr, NULL);
8768                 }
8769         }
8770         if (f_count) {
8771                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8772                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8773         }
8774
8775         /* Update VSI BW information */
8776         ret = i40e_vsi_get_bw_info(vsi);
8777         if (ret) {
8778                 dev_info(&pf->pdev->dev,
8779                          "couldn't get vsi bw info, err %s aq_err %s\n",
8780                          i40e_stat_str(&pf->hw, ret),
8781                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8782                 /* VSI is already added so not tearing that up */
8783                 ret = 0;
8784         }
8785
8786 err:
8787         return ret;
8788 }
8789
8790 /**
8791  * i40e_vsi_release - Delete a VSI and free its resources
8792  * @vsi: the VSI being removed
8793  *
8794  * Returns 0 on success or < 0 on error
8795  **/
8796 int i40e_vsi_release(struct i40e_vsi *vsi)
8797 {
8798         struct i40e_mac_filter *f, *ftmp;
8799         struct i40e_veb *veb = NULL;
8800         struct i40e_pf *pf;
8801         u16 uplink_seid;
8802         int i, n;
8803
8804         pf = vsi->back;
8805
8806         /* release of a VEB-owner or last VSI is not allowed */
8807         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8808                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8809                          vsi->seid, vsi->uplink_seid);
8810                 return -ENODEV;
8811         }
8812         if (vsi == pf->vsi[pf->lan_vsi] &&
8813             !test_bit(__I40E_DOWN, &pf->state)) {
8814                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8815                 return -ENODEV;
8816         }
8817
8818         uplink_seid = vsi->uplink_seid;
8819         if (vsi->type != I40E_VSI_SRIOV) {
8820                 if (vsi->netdev_registered) {
8821                         vsi->netdev_registered = false;
8822                         if (vsi->netdev) {
8823                                 /* results in a call to i40e_close() */
8824                                 unregister_netdev(vsi->netdev);
8825                         }
8826                 } else {
8827                         i40e_vsi_close(vsi);
8828                 }
8829                 i40e_vsi_disable_irq(vsi);
8830         }
8831
8832         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8833                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8834                                 f->is_vf, f->is_netdev);
8835         i40e_sync_vsi_filters(vsi, false);
8836
8837         i40e_vsi_delete(vsi);
8838         i40e_vsi_free_q_vectors(vsi);
8839         if (vsi->netdev) {
8840                 free_netdev(vsi->netdev);
8841                 vsi->netdev = NULL;
8842         }
8843         i40e_vsi_clear_rings(vsi);
8844         i40e_vsi_clear(vsi);
8845
8846         /* If this was the last thing on the VEB, except for the
8847          * controlling VSI, remove the VEB, which puts the controlling
8848          * VSI onto the next level down in the switch.
8849          *
8850          * Well, okay, there's one more exception here: don't remove
8851          * the orphan VEBs yet.  We'll wait for an explicit remove request
8852          * from up the network stack.
8853          */
8854         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8855                 if (pf->vsi[i] &&
8856                     pf->vsi[i]->uplink_seid == uplink_seid &&
8857                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8858                         n++;      /* count the VSIs */
8859                 }
8860         }
8861         for (i = 0; i < I40E_MAX_VEB; i++) {
8862                 if (!pf->veb[i])
8863                         continue;
8864                 if (pf->veb[i]->uplink_seid == uplink_seid)
8865                         n++;     /* count the VEBs */
8866                 if (pf->veb[i]->seid == uplink_seid)
8867                         veb = pf->veb[i];
8868         }
8869         if (n == 0 && veb && veb->uplink_seid != 0)
8870                 i40e_veb_release(veb);
8871
8872         return 0;
8873 }
8874
8875 /**
8876  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8877  * @vsi: ptr to the VSI
8878  *
8879  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8880  * corresponding SW VSI structure and initializes num_queue_pairs for the
8881  * newly allocated VSI.
8882  *
8883  * Returns 0 on success or negative on failure
8884  **/
8885 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8886 {
8887         int ret = -ENOENT;
8888         struct i40e_pf *pf = vsi->back;
8889
8890         if (vsi->q_vectors[0]) {
8891                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8892                          vsi->seid);
8893                 return -EEXIST;
8894         }
8895
8896         if (vsi->base_vector) {
8897                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8898                          vsi->seid, vsi->base_vector);
8899                 return -EEXIST;
8900         }
8901
8902         ret = i40e_vsi_alloc_q_vectors(vsi);
8903         if (ret) {
8904                 dev_info(&pf->pdev->dev,
8905                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8906                          vsi->num_q_vectors, vsi->seid, ret);
8907                 vsi->num_q_vectors = 0;
8908                 goto vector_setup_out;
8909         }
8910
8911         /* In Legacy mode, we do not have to get any other vector since we
8912          * piggyback on the misc/ICR0 for queue interrupts.
8913         */
8914         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8915                 return ret;
8916         if (vsi->num_q_vectors)
8917                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8918                                                  vsi->num_q_vectors, vsi->idx);
8919         if (vsi->base_vector < 0) {
8920                 dev_info(&pf->pdev->dev,
8921                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8922                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8923                 i40e_vsi_free_q_vectors(vsi);
8924                 ret = -ENOENT;
8925                 goto vector_setup_out;
8926         }
8927
8928 vector_setup_out:
8929         return ret;
8930 }
8931
8932 /**
8933  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8934  * @vsi: pointer to the vsi.
8935  *
8936  * This re-allocates a vsi's queue resources.
8937  *
8938  * Returns pointer to the successfully allocated and configured VSI sw struct
8939  * on success, otherwise returns NULL on failure.
8940  **/
8941 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8942 {
8943         struct i40e_pf *pf = vsi->back;
8944         u8 enabled_tc;
8945         int ret;
8946
8947         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8948         i40e_vsi_clear_rings(vsi);
8949
8950         i40e_vsi_free_arrays(vsi, false);
8951         i40e_set_num_rings_in_vsi(vsi);
8952         ret = i40e_vsi_alloc_arrays(vsi, false);
8953         if (ret)
8954                 goto err_vsi;
8955
8956         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8957         if (ret < 0) {
8958                 dev_info(&pf->pdev->dev,
8959                          "failed to get tracking for %d queues for VSI %d err %d\n",
8960                          vsi->alloc_queue_pairs, vsi->seid, ret);
8961                 goto err_vsi;
8962         }
8963         vsi->base_queue = ret;
8964
8965         /* Update the FW view of the VSI. Force a reset of TC and queue
8966          * layout configurations.
8967          */
8968         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8969         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8970         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8971         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8972
8973         /* assign it some queues */
8974         ret = i40e_alloc_rings(vsi);
8975         if (ret)
8976                 goto err_rings;
8977
8978         /* map all of the rings to the q_vectors */
8979         i40e_vsi_map_rings_to_vectors(vsi);
8980         return vsi;
8981
8982 err_rings:
8983         i40e_vsi_free_q_vectors(vsi);
8984         if (vsi->netdev_registered) {
8985                 vsi->netdev_registered = false;
8986                 unregister_netdev(vsi->netdev);
8987                 free_netdev(vsi->netdev);
8988                 vsi->netdev = NULL;
8989         }
8990         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8991 err_vsi:
8992         i40e_vsi_clear(vsi);
8993         return NULL;
8994 }
8995
8996 /**
8997  * i40e_vsi_setup - Set up a VSI by a given type
8998  * @pf: board private structure
8999  * @type: VSI type
9000  * @uplink_seid: the switch element to link to
9001  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9002  *
9003  * This allocates the sw VSI structure and its queue resources, then add a VSI
9004  * to the identified VEB.
9005  *
9006  * Returns pointer to the successfully allocated and configure VSI sw struct on
9007  * success, otherwise returns NULL on failure.
9008  **/
9009 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9010                                 u16 uplink_seid, u32 param1)
9011 {
9012         struct i40e_vsi *vsi = NULL;
9013         struct i40e_veb *veb = NULL;
9014         int ret, i;
9015         int v_idx;
9016
9017         /* The requested uplink_seid must be either
9018          *     - the PF's port seid
9019          *              no VEB is needed because this is the PF
9020          *              or this is a Flow Director special case VSI
9021          *     - seid of an existing VEB
9022          *     - seid of a VSI that owns an existing VEB
9023          *     - seid of a VSI that doesn't own a VEB
9024          *              a new VEB is created and the VSI becomes the owner
9025          *     - seid of the PF VSI, which is what creates the first VEB
9026          *              this is a special case of the previous
9027          *
9028          * Find which uplink_seid we were given and create a new VEB if needed
9029          */
9030         for (i = 0; i < I40E_MAX_VEB; i++) {
9031                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9032                         veb = pf->veb[i];
9033                         break;
9034                 }
9035         }
9036
9037         if (!veb && uplink_seid != pf->mac_seid) {
9038
9039                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9040                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9041                                 vsi = pf->vsi[i];
9042                                 break;
9043                         }
9044                 }
9045                 if (!vsi) {
9046                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9047                                  uplink_seid);
9048                         return NULL;
9049                 }
9050
9051                 if (vsi->uplink_seid == pf->mac_seid)
9052                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9053                                              vsi->tc_config.enabled_tc);
9054                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9055                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9056                                              vsi->tc_config.enabled_tc);
9057                 if (veb) {
9058                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9059                                 dev_info(&vsi->back->pdev->dev,
9060                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
9061                                          __func__);
9062                                 return NULL;
9063                         }
9064                         /* We come up by default in VEPA mode if SRIOV is not
9065                          * already enabled, in which case we can't force VEPA
9066                          * mode.
9067                          */
9068                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9069                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9070                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9071                         }
9072                         i40e_config_bridge_mode(veb);
9073                 }
9074                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9075                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9076                                 veb = pf->veb[i];
9077                 }
9078                 if (!veb) {
9079                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9080                         return NULL;
9081                 }
9082
9083                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9084                 uplink_seid = veb->seid;
9085         }
9086
9087         /* get vsi sw struct */
9088         v_idx = i40e_vsi_mem_alloc(pf, type);
9089         if (v_idx < 0)
9090                 goto err_alloc;
9091         vsi = pf->vsi[v_idx];
9092         if (!vsi)
9093                 goto err_alloc;
9094         vsi->type = type;
9095         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9096
9097         if (type == I40E_VSI_MAIN)
9098                 pf->lan_vsi = v_idx;
9099         else if (type == I40E_VSI_SRIOV)
9100                 vsi->vf_id = param1;
9101         /* assign it some queues */
9102         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9103                                 vsi->idx);
9104         if (ret < 0) {
9105                 dev_info(&pf->pdev->dev,
9106                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9107                          vsi->alloc_queue_pairs, vsi->seid, ret);
9108                 goto err_vsi;
9109         }
9110         vsi->base_queue = ret;
9111
9112         /* get a VSI from the hardware */
9113         vsi->uplink_seid = uplink_seid;
9114         ret = i40e_add_vsi(vsi);
9115         if (ret)
9116                 goto err_vsi;
9117
9118         switch (vsi->type) {
9119         /* setup the netdev if needed */
9120         case I40E_VSI_MAIN:
9121         case I40E_VSI_VMDQ2:
9122         case I40E_VSI_FCOE:
9123                 ret = i40e_config_netdev(vsi);
9124                 if (ret)
9125                         goto err_netdev;
9126                 ret = register_netdev(vsi->netdev);
9127                 if (ret)
9128                         goto err_netdev;
9129                 vsi->netdev_registered = true;
9130                 netif_carrier_off(vsi->netdev);
9131 #ifdef CONFIG_I40E_DCB
9132                 /* Setup DCB netlink interface */
9133                 i40e_dcbnl_setup(vsi);
9134 #endif /* CONFIG_I40E_DCB */
9135                 /* fall through */
9136
9137         case I40E_VSI_FDIR:
9138                 /* set up vectors and rings if needed */
9139                 ret = i40e_vsi_setup_vectors(vsi);
9140                 if (ret)
9141                         goto err_msix;
9142
9143                 ret = i40e_alloc_rings(vsi);
9144                 if (ret)
9145                         goto err_rings;
9146
9147                 /* map all of the rings to the q_vectors */
9148                 i40e_vsi_map_rings_to_vectors(vsi);
9149
9150                 i40e_vsi_reset_stats(vsi);
9151                 break;
9152
9153         default:
9154                 /* no netdev or rings for the other VSI types */
9155                 break;
9156         }
9157
9158         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9159             (vsi->type == I40E_VSI_VMDQ2)) {
9160                 ret = i40e_vsi_config_rss(vsi);
9161         }
9162         return vsi;
9163
9164 err_rings:
9165         i40e_vsi_free_q_vectors(vsi);
9166 err_msix:
9167         if (vsi->netdev_registered) {
9168                 vsi->netdev_registered = false;
9169                 unregister_netdev(vsi->netdev);
9170                 free_netdev(vsi->netdev);
9171                 vsi->netdev = NULL;
9172         }
9173 err_netdev:
9174         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9175 err_vsi:
9176         i40e_vsi_clear(vsi);
9177 err_alloc:
9178         return NULL;
9179 }
9180
9181 /**
9182  * i40e_veb_get_bw_info - Query VEB BW information
9183  * @veb: the veb to query
9184  *
9185  * Query the Tx scheduler BW configuration data for given VEB
9186  **/
9187 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9188 {
9189         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9190         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9191         struct i40e_pf *pf = veb->pf;
9192         struct i40e_hw *hw = &pf->hw;
9193         u32 tc_bw_max;
9194         int ret = 0;
9195         int i;
9196
9197         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9198                                                   &bw_data, NULL);
9199         if (ret) {
9200                 dev_info(&pf->pdev->dev,
9201                          "query veb bw config failed, err %s aq_err %s\n",
9202                          i40e_stat_str(&pf->hw, ret),
9203                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9204                 goto out;
9205         }
9206
9207         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9208                                                    &ets_data, NULL);
9209         if (ret) {
9210                 dev_info(&pf->pdev->dev,
9211                          "query veb bw ets config failed, err %s aq_err %s\n",
9212                          i40e_stat_str(&pf->hw, ret),
9213                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9214                 goto out;
9215         }
9216
9217         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9218         veb->bw_max_quanta = ets_data.tc_bw_max;
9219         veb->is_abs_credits = bw_data.absolute_credits_enable;
9220         veb->enabled_tc = ets_data.tc_valid_bits;
9221         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9222                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9223         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9224                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9225                 veb->bw_tc_limit_credits[i] =
9226                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9227                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9228         }
9229
9230 out:
9231         return ret;
9232 }
9233
9234 /**
9235  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9236  * @pf: board private structure
9237  *
9238  * On error: returns error code (negative)
9239  * On success: returns vsi index in PF (positive)
9240  **/
9241 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9242 {
9243         int ret = -ENOENT;
9244         struct i40e_veb *veb;
9245         int i;
9246
9247         /* Need to protect the allocation of switch elements at the PF level */
9248         mutex_lock(&pf->switch_mutex);
9249
9250         /* VEB list may be fragmented if VEB creation/destruction has
9251          * been happening.  We can afford to do a quick scan to look
9252          * for any free slots in the list.
9253          *
9254          * find next empty veb slot, looping back around if necessary
9255          */
9256         i = 0;
9257         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9258                 i++;
9259         if (i >= I40E_MAX_VEB) {
9260                 ret = -ENOMEM;
9261                 goto err_alloc_veb;  /* out of VEB slots! */
9262         }
9263
9264         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9265         if (!veb) {
9266                 ret = -ENOMEM;
9267                 goto err_alloc_veb;
9268         }
9269         veb->pf = pf;
9270         veb->idx = i;
9271         veb->enabled_tc = 1;
9272
9273         pf->veb[i] = veb;
9274         ret = i;
9275 err_alloc_veb:
9276         mutex_unlock(&pf->switch_mutex);
9277         return ret;
9278 }
9279
9280 /**
9281  * i40e_switch_branch_release - Delete a branch of the switch tree
9282  * @branch: where to start deleting
9283  *
9284  * This uses recursion to find the tips of the branch to be
9285  * removed, deleting until we get back to and can delete this VEB.
9286  **/
9287 static void i40e_switch_branch_release(struct i40e_veb *branch)
9288 {
9289         struct i40e_pf *pf = branch->pf;
9290         u16 branch_seid = branch->seid;
9291         u16 veb_idx = branch->idx;
9292         int i;
9293
9294         /* release any VEBs on this VEB - RECURSION */
9295         for (i = 0; i < I40E_MAX_VEB; i++) {
9296                 if (!pf->veb[i])
9297                         continue;
9298                 if (pf->veb[i]->uplink_seid == branch->seid)
9299                         i40e_switch_branch_release(pf->veb[i]);
9300         }
9301
9302         /* Release the VSIs on this VEB, but not the owner VSI.
9303          *
9304          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9305          *       the VEB itself, so don't use (*branch) after this loop.
9306          */
9307         for (i = 0; i < pf->num_alloc_vsi; i++) {
9308                 if (!pf->vsi[i])
9309                         continue;
9310                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9311                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9312                         i40e_vsi_release(pf->vsi[i]);
9313                 }
9314         }
9315
9316         /* There's one corner case where the VEB might not have been
9317          * removed, so double check it here and remove it if needed.
9318          * This case happens if the veb was created from the debugfs
9319          * commands and no VSIs were added to it.
9320          */
9321         if (pf->veb[veb_idx])
9322                 i40e_veb_release(pf->veb[veb_idx]);
9323 }
9324
9325 /**
9326  * i40e_veb_clear - remove veb struct
9327  * @veb: the veb to remove
9328  **/
9329 static void i40e_veb_clear(struct i40e_veb *veb)
9330 {
9331         if (!veb)
9332                 return;
9333
9334         if (veb->pf) {
9335                 struct i40e_pf *pf = veb->pf;
9336
9337                 mutex_lock(&pf->switch_mutex);
9338                 if (pf->veb[veb->idx] == veb)
9339                         pf->veb[veb->idx] = NULL;
9340                 mutex_unlock(&pf->switch_mutex);
9341         }
9342
9343         kfree(veb);
9344 }
9345
9346 /**
9347  * i40e_veb_release - Delete a VEB and free its resources
9348  * @veb: the VEB being removed
9349  **/
9350 void i40e_veb_release(struct i40e_veb *veb)
9351 {
9352         struct i40e_vsi *vsi = NULL;
9353         struct i40e_pf *pf;
9354         int i, n = 0;
9355
9356         pf = veb->pf;
9357
9358         /* find the remaining VSI and check for extras */
9359         for (i = 0; i < pf->num_alloc_vsi; i++) {
9360                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9361                         n++;
9362                         vsi = pf->vsi[i];
9363                 }
9364         }
9365         if (n != 1) {
9366                 dev_info(&pf->pdev->dev,
9367                          "can't remove VEB %d with %d VSIs left\n",
9368                          veb->seid, n);
9369                 return;
9370         }
9371
9372         /* move the remaining VSI to uplink veb */
9373         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9374         if (veb->uplink_seid) {
9375                 vsi->uplink_seid = veb->uplink_seid;
9376                 if (veb->uplink_seid == pf->mac_seid)
9377                         vsi->veb_idx = I40E_NO_VEB;
9378                 else
9379                         vsi->veb_idx = veb->veb_idx;
9380         } else {
9381                 /* floating VEB */
9382                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9383                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9384         }
9385
9386         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9387         i40e_veb_clear(veb);
9388 }
9389
9390 /**
9391  * i40e_add_veb - create the VEB in the switch
9392  * @veb: the VEB to be instantiated
9393  * @vsi: the controlling VSI
9394  **/
9395 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9396 {
9397         struct i40e_pf *pf = veb->pf;
9398         bool is_default = veb->pf->cur_promisc;
9399         bool is_cloud = false;
9400         int ret;
9401
9402         /* get a VEB from the hardware */
9403         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9404                               veb->enabled_tc, is_default,
9405                               is_cloud, &veb->seid, NULL);
9406         if (ret) {
9407                 dev_info(&pf->pdev->dev,
9408                          "couldn't add VEB, err %s aq_err %s\n",
9409                          i40e_stat_str(&pf->hw, ret),
9410                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9411                 return -EPERM;
9412         }
9413
9414         /* get statistics counter */
9415         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9416                                          &veb->stats_idx, NULL, NULL, NULL);
9417         if (ret) {
9418                 dev_info(&pf->pdev->dev,
9419                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9420                          i40e_stat_str(&pf->hw, ret),
9421                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9422                 return -EPERM;
9423         }
9424         ret = i40e_veb_get_bw_info(veb);
9425         if (ret) {
9426                 dev_info(&pf->pdev->dev,
9427                          "couldn't get VEB bw info, err %s aq_err %s\n",
9428                          i40e_stat_str(&pf->hw, ret),
9429                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9430                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9431                 return -ENOENT;
9432         }
9433
9434         vsi->uplink_seid = veb->seid;
9435         vsi->veb_idx = veb->idx;
9436         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9437
9438         return 0;
9439 }
9440
9441 /**
9442  * i40e_veb_setup - Set up a VEB
9443  * @pf: board private structure
9444  * @flags: VEB setup flags
9445  * @uplink_seid: the switch element to link to
9446  * @vsi_seid: the initial VSI seid
9447  * @enabled_tc: Enabled TC bit-map
9448  *
9449  * This allocates the sw VEB structure and links it into the switch
9450  * It is possible and legal for this to be a duplicate of an already
9451  * existing VEB.  It is also possible for both uplink and vsi seids
9452  * to be zero, in order to create a floating VEB.
9453  *
9454  * Returns pointer to the successfully allocated VEB sw struct on
9455  * success, otherwise returns NULL on failure.
9456  **/
9457 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9458                                 u16 uplink_seid, u16 vsi_seid,
9459                                 u8 enabled_tc)
9460 {
9461         struct i40e_veb *veb, *uplink_veb = NULL;
9462         int vsi_idx, veb_idx;
9463         int ret;
9464
9465         /* if one seid is 0, the other must be 0 to create a floating relay */
9466         if ((uplink_seid == 0 || vsi_seid == 0) &&
9467             (uplink_seid + vsi_seid != 0)) {
9468                 dev_info(&pf->pdev->dev,
9469                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9470                          uplink_seid, vsi_seid);
9471                 return NULL;
9472         }
9473
9474         /* make sure there is such a vsi and uplink */
9475         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9476                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9477                         break;
9478         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9479                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9480                          vsi_seid);
9481                 return NULL;
9482         }
9483
9484         if (uplink_seid && uplink_seid != pf->mac_seid) {
9485                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9486                         if (pf->veb[veb_idx] &&
9487                             pf->veb[veb_idx]->seid == uplink_seid) {
9488                                 uplink_veb = pf->veb[veb_idx];
9489                                 break;
9490                         }
9491                 }
9492                 if (!uplink_veb) {
9493                         dev_info(&pf->pdev->dev,
9494                                  "uplink seid %d not found\n", uplink_seid);
9495                         return NULL;
9496                 }
9497         }
9498
9499         /* get veb sw struct */
9500         veb_idx = i40e_veb_mem_alloc(pf);
9501         if (veb_idx < 0)
9502                 goto err_alloc;
9503         veb = pf->veb[veb_idx];
9504         veb->flags = flags;
9505         veb->uplink_seid = uplink_seid;
9506         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9507         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9508
9509         /* create the VEB in the switch */
9510         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9511         if (ret)
9512                 goto err_veb;
9513         if (vsi_idx == pf->lan_vsi)
9514                 pf->lan_veb = veb->idx;
9515
9516         return veb;
9517
9518 err_veb:
9519         i40e_veb_clear(veb);
9520 err_alloc:
9521         return NULL;
9522 }
9523
9524 /**
9525  * i40e_setup_pf_switch_element - set PF vars based on switch type
9526  * @pf: board private structure
9527  * @ele: element we are building info from
9528  * @num_reported: total number of elements
9529  * @printconfig: should we print the contents
9530  *
9531  * helper function to assist in extracting a few useful SEID values.
9532  **/
9533 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9534                                 struct i40e_aqc_switch_config_element_resp *ele,
9535                                 u16 num_reported, bool printconfig)
9536 {
9537         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9538         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9539         u8 element_type = ele->element_type;
9540         u16 seid = le16_to_cpu(ele->seid);
9541
9542         if (printconfig)
9543                 dev_info(&pf->pdev->dev,
9544                          "type=%d seid=%d uplink=%d downlink=%d\n",
9545                          element_type, seid, uplink_seid, downlink_seid);
9546
9547         switch (element_type) {
9548         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9549                 pf->mac_seid = seid;
9550                 break;
9551         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9552                 /* Main VEB? */
9553                 if (uplink_seid != pf->mac_seid)
9554                         break;
9555                 if (pf->lan_veb == I40E_NO_VEB) {
9556                         int v;
9557
9558                         /* find existing or else empty VEB */
9559                         for (v = 0; v < I40E_MAX_VEB; v++) {
9560                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9561                                         pf->lan_veb = v;
9562                                         break;
9563                                 }
9564                         }
9565                         if (pf->lan_veb == I40E_NO_VEB) {
9566                                 v = i40e_veb_mem_alloc(pf);
9567                                 if (v < 0)
9568                                         break;
9569                                 pf->lan_veb = v;
9570                         }
9571                 }
9572
9573                 pf->veb[pf->lan_veb]->seid = seid;
9574                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9575                 pf->veb[pf->lan_veb]->pf = pf;
9576                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9577                 break;
9578         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9579                 if (num_reported != 1)
9580                         break;
9581                 /* This is immediately after a reset so we can assume this is
9582                  * the PF's VSI
9583                  */
9584                 pf->mac_seid = uplink_seid;
9585                 pf->pf_seid = downlink_seid;
9586                 pf->main_vsi_seid = seid;
9587                 if (printconfig)
9588                         dev_info(&pf->pdev->dev,
9589                                  "pf_seid=%d main_vsi_seid=%d\n",
9590                                  pf->pf_seid, pf->main_vsi_seid);
9591                 break;
9592         case I40E_SWITCH_ELEMENT_TYPE_PF:
9593         case I40E_SWITCH_ELEMENT_TYPE_VF:
9594         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9595         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9596         case I40E_SWITCH_ELEMENT_TYPE_PE:
9597         case I40E_SWITCH_ELEMENT_TYPE_PA:
9598                 /* ignore these for now */
9599                 break;
9600         default:
9601                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9602                          element_type, seid);
9603                 break;
9604         }
9605 }
9606
9607 /**
9608  * i40e_fetch_switch_configuration - Get switch config from firmware
9609  * @pf: board private structure
9610  * @printconfig: should we print the contents
9611  *
9612  * Get the current switch configuration from the device and
9613  * extract a few useful SEID values.
9614  **/
9615 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9616 {
9617         struct i40e_aqc_get_switch_config_resp *sw_config;
9618         u16 next_seid = 0;
9619         int ret = 0;
9620         u8 *aq_buf;
9621         int i;
9622
9623         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9624         if (!aq_buf)
9625                 return -ENOMEM;
9626
9627         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9628         do {
9629                 u16 num_reported, num_total;
9630
9631                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9632                                                 I40E_AQ_LARGE_BUF,
9633                                                 &next_seid, NULL);
9634                 if (ret) {
9635                         dev_info(&pf->pdev->dev,
9636                                  "get switch config failed err %s aq_err %s\n",
9637                                  i40e_stat_str(&pf->hw, ret),
9638                                  i40e_aq_str(&pf->hw,
9639                                              pf->hw.aq.asq_last_status));
9640                         kfree(aq_buf);
9641                         return -ENOENT;
9642                 }
9643
9644                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9645                 num_total = le16_to_cpu(sw_config->header.num_total);
9646
9647                 if (printconfig)
9648                         dev_info(&pf->pdev->dev,
9649                                  "header: %d reported %d total\n",
9650                                  num_reported, num_total);
9651
9652                 for (i = 0; i < num_reported; i++) {
9653                         struct i40e_aqc_switch_config_element_resp *ele =
9654                                 &sw_config->element[i];
9655
9656                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9657                                                      printconfig);
9658                 }
9659         } while (next_seid != 0);
9660
9661         kfree(aq_buf);
9662         return ret;
9663 }
9664
9665 /**
9666  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9667  * @pf: board private structure
9668  * @reinit: if the Main VSI needs to re-initialized.
9669  *
9670  * Returns 0 on success, negative value on failure
9671  **/
9672 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9673 {
9674         int ret;
9675
9676         /* find out what's out there already */
9677         ret = i40e_fetch_switch_configuration(pf, false);
9678         if (ret) {
9679                 dev_info(&pf->pdev->dev,
9680                          "couldn't fetch switch config, err %s aq_err %s\n",
9681                          i40e_stat_str(&pf->hw, ret),
9682                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9683                 return ret;
9684         }
9685         i40e_pf_reset_stats(pf);
9686
9687         /* first time setup */
9688         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9689                 struct i40e_vsi *vsi = NULL;
9690                 u16 uplink_seid;
9691
9692                 /* Set up the PF VSI associated with the PF's main VSI
9693                  * that is already in the HW switch
9694                  */
9695                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9696                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9697                 else
9698                         uplink_seid = pf->mac_seid;
9699                 if (pf->lan_vsi == I40E_NO_VSI)
9700                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9701                 else if (reinit)
9702                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9703                 if (!vsi) {
9704                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9705                         i40e_fdir_teardown(pf);
9706                         return -EAGAIN;
9707                 }
9708         } else {
9709                 /* force a reset of TC and queue layout configurations */
9710                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9711                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9712                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9713                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9714         }
9715         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9716
9717         i40e_fdir_sb_setup(pf);
9718
9719         /* Setup static PF queue filter control settings */
9720         ret = i40e_setup_pf_filter_control(pf);
9721         if (ret) {
9722                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9723                          ret);
9724                 /* Failure here should not stop continuing other steps */
9725         }
9726
9727         /* enable RSS in the HW, even for only one queue, as the stack can use
9728          * the hash
9729          */
9730         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9731                 i40e_config_rss(pf);
9732
9733         /* fill in link information and enable LSE reporting */
9734         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9735         i40e_link_event(pf);
9736
9737         /* Initialize user-specific link properties */
9738         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9739                                   I40E_AQ_AN_COMPLETED) ? true : false);
9740
9741         i40e_ptp_init(pf);
9742
9743         return ret;
9744 }
9745
9746 /**
9747  * i40e_determine_queue_usage - Work out queue distribution
9748  * @pf: board private structure
9749  **/
9750 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9751 {
9752         int queues_left;
9753
9754         pf->num_lan_qps = 0;
9755 #ifdef I40E_FCOE
9756         pf->num_fcoe_qps = 0;
9757 #endif
9758
9759         /* Find the max queues to be put into basic use.  We'll always be
9760          * using TC0, whether or not DCB is running, and TC0 will get the
9761          * big RSS set.
9762          */
9763         queues_left = pf->hw.func_caps.num_tx_qp;
9764
9765         if ((queues_left == 1) ||
9766             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9767                 /* one qp for PF, no queues for anything else */
9768                 queues_left = 0;
9769                 pf->rss_size = pf->num_lan_qps = 1;
9770
9771                 /* make sure all the fancies are disabled */
9772                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9773 #ifdef I40E_FCOE
9774                                I40E_FLAG_FCOE_ENABLED   |
9775 #endif
9776                                I40E_FLAG_FD_SB_ENABLED  |
9777                                I40E_FLAG_FD_ATR_ENABLED |
9778                                I40E_FLAG_DCB_CAPABLE    |
9779                                I40E_FLAG_SRIOV_ENABLED  |
9780                                I40E_FLAG_VMDQ_ENABLED);
9781         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9782                                   I40E_FLAG_FD_SB_ENABLED |
9783                                   I40E_FLAG_FD_ATR_ENABLED |
9784                                   I40E_FLAG_DCB_CAPABLE))) {
9785                 /* one qp for PF */
9786                 pf->rss_size = pf->num_lan_qps = 1;
9787                 queues_left -= pf->num_lan_qps;
9788
9789                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9790 #ifdef I40E_FCOE
9791                                I40E_FLAG_FCOE_ENABLED   |
9792 #endif
9793                                I40E_FLAG_FD_SB_ENABLED  |
9794                                I40E_FLAG_FD_ATR_ENABLED |
9795                                I40E_FLAG_DCB_ENABLED    |
9796                                I40E_FLAG_VMDQ_ENABLED);
9797         } else {
9798                 /* Not enough queues for all TCs */
9799                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9800                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9801                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9802                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9803                 }
9804                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9805                                         num_online_cpus());
9806                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9807                                         pf->hw.func_caps.num_tx_qp);
9808
9809                 queues_left -= pf->num_lan_qps;
9810         }
9811
9812 #ifdef I40E_FCOE
9813         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9814                 if (I40E_DEFAULT_FCOE <= queues_left) {
9815                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9816                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9817                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9818                 } else {
9819                         pf->num_fcoe_qps = 0;
9820                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9821                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9822                 }
9823
9824                 queues_left -= pf->num_fcoe_qps;
9825         }
9826
9827 #endif
9828         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9829                 if (queues_left > 1) {
9830                         queues_left -= 1; /* save 1 queue for FD */
9831                 } else {
9832                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9833                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9834                 }
9835         }
9836
9837         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9838             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9839                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9840                                         (queues_left / pf->num_vf_qps));
9841                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9842         }
9843
9844         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9845             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9846                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9847                                           (queues_left / pf->num_vmdq_qps));
9848                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9849         }
9850
9851         pf->queues_left = queues_left;
9852 #ifdef I40E_FCOE
9853         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9854 #endif
9855 }
9856
9857 /**
9858  * i40e_setup_pf_filter_control - Setup PF static filter control
9859  * @pf: PF to be setup
9860  *
9861  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9862  * settings. If PE/FCoE are enabled then it will also set the per PF
9863  * based filter sizes required for them. It also enables Flow director,
9864  * ethertype and macvlan type filter settings for the pf.
9865  *
9866  * Returns 0 on success, negative on failure
9867  **/
9868 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9869 {
9870         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9871
9872         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9873
9874         /* Flow Director is enabled */
9875         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9876                 settings->enable_fdir = true;
9877
9878         /* Ethtype and MACVLAN filters enabled for PF */
9879         settings->enable_ethtype = true;
9880         settings->enable_macvlan = true;
9881
9882         if (i40e_set_filter_control(&pf->hw, settings))
9883                 return -ENOENT;
9884
9885         return 0;
9886 }
9887
9888 #define INFO_STRING_LEN 255
9889 static void i40e_print_features(struct i40e_pf *pf)
9890 {
9891         struct i40e_hw *hw = &pf->hw;
9892         char *buf, *string;
9893
9894         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9895         if (!string) {
9896                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9897                 return;
9898         }
9899
9900         buf = string;
9901
9902         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9903 #ifdef CONFIG_PCI_IOV
9904         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9905 #endif
9906         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9907                        pf->hw.func_caps.num_vsis,
9908                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9909                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9910
9911         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9912                 buf += sprintf(buf, "RSS ");
9913         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9914                 buf += sprintf(buf, "FD_ATR ");
9915         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9916                 buf += sprintf(buf, "FD_SB ");
9917                 buf += sprintf(buf, "NTUPLE ");
9918         }
9919         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9920                 buf += sprintf(buf, "DCB ");
9921         if (pf->flags & I40E_FLAG_PTP)
9922                 buf += sprintf(buf, "PTP ");
9923 #ifdef I40E_FCOE
9924         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9925                 buf += sprintf(buf, "FCOE ");
9926 #endif
9927
9928         BUG_ON(buf > (string + INFO_STRING_LEN));
9929         dev_info(&pf->pdev->dev, "%s\n", string);
9930         kfree(string);
9931 }
9932
9933 /**
9934  * i40e_probe - Device initialization routine
9935  * @pdev: PCI device information struct
9936  * @ent: entry in i40e_pci_tbl
9937  *
9938  * i40e_probe initializes a PF identified by a pci_dev structure.
9939  * The OS initialization, configuring of the PF private structure,
9940  * and a hardware reset occur.
9941  *
9942  * Returns 0 on success, negative on failure
9943  **/
9944 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9945 {
9946         struct i40e_aq_get_phy_abilities_resp abilities;
9947         struct i40e_pf *pf;
9948         struct i40e_hw *hw;
9949         static u16 pfs_found;
9950         u16 link_status;
9951         int err = 0;
9952         u32 len;
9953         u32 i;
9954
9955         err = pci_enable_device_mem(pdev);
9956         if (err)
9957                 return err;
9958
9959         /* set up for high or low dma */
9960         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9961         if (err) {
9962                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9963                 if (err) {
9964                         dev_err(&pdev->dev,
9965                                 "DMA configuration failed: 0x%x\n", err);
9966                         goto err_dma;
9967                 }
9968         }
9969
9970         /* set up pci connections */
9971         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9972                                            IORESOURCE_MEM), i40e_driver_name);
9973         if (err) {
9974                 dev_info(&pdev->dev,
9975                          "pci_request_selected_regions failed %d\n", err);
9976                 goto err_pci_reg;
9977         }
9978
9979         pci_enable_pcie_error_reporting(pdev);
9980         pci_set_master(pdev);
9981
9982         /* Now that we have a PCI connection, we need to do the
9983          * low level device setup.  This is primarily setting up
9984          * the Admin Queue structures and then querying for the
9985          * device's current profile information.
9986          */
9987         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9988         if (!pf) {
9989                 err = -ENOMEM;
9990                 goto err_pf_alloc;
9991         }
9992         pf->next_vsi = 0;
9993         pf->pdev = pdev;
9994         set_bit(__I40E_DOWN, &pf->state);
9995
9996         hw = &pf->hw;
9997         hw->back = pf;
9998
9999         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10000                                 I40E_MAX_CSR_SPACE);
10001
10002         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10003         if (!hw->hw_addr) {
10004                 err = -EIO;
10005                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10006                          (unsigned int)pci_resource_start(pdev, 0),
10007                          pf->ioremap_len, err);
10008                 goto err_ioremap;
10009         }
10010         hw->vendor_id = pdev->vendor;
10011         hw->device_id = pdev->device;
10012         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10013         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10014         hw->subsystem_device_id = pdev->subsystem_device;
10015         hw->bus.device = PCI_SLOT(pdev->devfn);
10016         hw->bus.func = PCI_FUNC(pdev->devfn);
10017         pf->instance = pfs_found;
10018
10019         if (debug != -1) {
10020                 pf->msg_enable = pf->hw.debug_mask;
10021                 pf->msg_enable = debug;
10022         }
10023
10024         /* do a special CORER for clearing PXE mode once at init */
10025         if (hw->revision_id == 0 &&
10026             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10027                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10028                 i40e_flush(hw);
10029                 msleep(200);
10030                 pf->corer_count++;
10031
10032                 i40e_clear_pxe_mode(hw);
10033         }
10034
10035         /* Reset here to make sure all is clean and to define PF 'n' */
10036         i40e_clear_hw(hw);
10037         err = i40e_pf_reset(hw);
10038         if (err) {
10039                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10040                 goto err_pf_reset;
10041         }
10042         pf->pfr_count++;
10043
10044         hw->aq.num_arq_entries = I40E_AQ_LEN;
10045         hw->aq.num_asq_entries = I40E_AQ_LEN;
10046         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10047         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10048         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10049
10050         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10051                  "%s-%s:misc",
10052                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10053
10054         err = i40e_init_shared_code(hw);
10055         if (err) {
10056                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10057                          err);
10058                 goto err_pf_reset;
10059         }
10060
10061         /* set up a default setting for link flow control */
10062         pf->hw.fc.requested_mode = I40E_FC_NONE;
10063
10064         err = i40e_init_adminq(hw);
10065         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10066         if (err) {
10067                 dev_info(&pdev->dev,
10068                          "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");
10069                 goto err_pf_reset;
10070         }
10071
10072         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10073             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10074                 dev_info(&pdev->dev,
10075                          "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");
10076         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10077                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10078                 dev_info(&pdev->dev,
10079                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10080
10081         i40e_verify_eeprom(pf);
10082
10083         /* Rev 0 hardware was never productized */
10084         if (hw->revision_id < 1)
10085                 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");
10086
10087         i40e_clear_pxe_mode(hw);
10088         err = i40e_get_capabilities(pf);
10089         if (err)
10090                 goto err_adminq_setup;
10091
10092         err = i40e_sw_init(pf);
10093         if (err) {
10094                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10095                 goto err_sw_init;
10096         }
10097
10098         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10099                                 hw->func_caps.num_rx_qp,
10100                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10101         if (err) {
10102                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10103                 goto err_init_lan_hmc;
10104         }
10105
10106         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10107         if (err) {
10108                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10109                 err = -ENOENT;
10110                 goto err_configure_lan_hmc;
10111         }
10112
10113         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10114          * Ignore error return codes because if it was already disabled via
10115          * hardware settings this will fail
10116          */
10117         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10118             (pf->hw.aq.fw_maj_ver < 4)) {
10119                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10120                 i40e_aq_stop_lldp(hw, true, NULL);
10121         }
10122
10123         i40e_get_mac_addr(hw, hw->mac.addr);
10124         if (!is_valid_ether_addr(hw->mac.addr)) {
10125                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10126                 err = -EIO;
10127                 goto err_mac_addr;
10128         }
10129         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10130         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10131         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10132         if (is_valid_ether_addr(hw->mac.port_addr))
10133                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10134 #ifdef I40E_FCOE
10135         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10136         if (err)
10137                 dev_info(&pdev->dev,
10138                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10139         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10140                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10141                          hw->mac.san_addr);
10142                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10143         }
10144         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10145 #endif /* I40E_FCOE */
10146
10147         pci_set_drvdata(pdev, pf);
10148         pci_save_state(pdev);
10149 #ifdef CONFIG_I40E_DCB
10150         err = i40e_init_pf_dcb(pf);
10151         if (err) {
10152                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10153                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10154                 /* Continue without DCB enabled */
10155         }
10156 #endif /* CONFIG_I40E_DCB */
10157
10158         /* set up periodic task facility */
10159         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10160         pf->service_timer_period = HZ;
10161
10162         INIT_WORK(&pf->service_task, i40e_service_task);
10163         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10164         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10165
10166         /* WoL defaults to disabled */
10167         pf->wol_en = false;
10168         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10169
10170         /* set up the main switch operations */
10171         i40e_determine_queue_usage(pf);
10172         err = i40e_init_interrupt_scheme(pf);
10173         if (err)
10174                 goto err_switch_setup;
10175
10176         /* The number of VSIs reported by the FW is the minimum guaranteed
10177          * to us; HW supports far more and we share the remaining pool with
10178          * the other PFs. We allocate space for more than the guarantee with
10179          * the understanding that we might not get them all later.
10180          */
10181         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10182                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10183         else
10184                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10185
10186         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10187         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10188         pf->vsi = kzalloc(len, GFP_KERNEL);
10189         if (!pf->vsi) {
10190                 err = -ENOMEM;
10191                 goto err_switch_setup;
10192         }
10193
10194 #ifdef CONFIG_PCI_IOV
10195         /* prep for VF support */
10196         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10197             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10198             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10199                 if (pci_num_vf(pdev))
10200                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10201         }
10202 #endif
10203         err = i40e_setup_pf_switch(pf, false);
10204         if (err) {
10205                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10206                 goto err_vsis;
10207         }
10208         /* if FDIR VSI was set up, start it now */
10209         for (i = 0; i < pf->num_alloc_vsi; i++) {
10210                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10211                         i40e_vsi_open(pf->vsi[i]);
10212                         break;
10213                 }
10214         }
10215
10216         /* driver is only interested in link up/down and module qualification
10217          * reports from firmware
10218          */
10219         err = i40e_aq_set_phy_int_mask(&pf->hw,
10220                                        I40E_AQ_EVENT_LINK_UPDOWN |
10221                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10222         if (err)
10223                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10224                          i40e_stat_str(&pf->hw, err),
10225                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10226
10227         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10228             (pf->hw.aq.fw_maj_ver < 4)) {
10229                 msleep(75);
10230                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10231                 if (err)
10232                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10233                                  i40e_stat_str(&pf->hw, err),
10234                                  i40e_aq_str(&pf->hw,
10235                                              pf->hw.aq.asq_last_status));
10236         }
10237         /* The main driver is (mostly) up and happy. We need to set this state
10238          * before setting up the misc vector or we get a race and the vector
10239          * ends up disabled forever.
10240          */
10241         clear_bit(__I40E_DOWN, &pf->state);
10242
10243         /* In case of MSIX we are going to setup the misc vector right here
10244          * to handle admin queue events etc. In case of legacy and MSI
10245          * the misc functionality and queue processing is combined in
10246          * the same vector and that gets setup at open.
10247          */
10248         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10249                 err = i40e_setup_misc_vector(pf);
10250                 if (err) {
10251                         dev_info(&pdev->dev,
10252                                  "setup of misc vector failed: %d\n", err);
10253                         goto err_vsis;
10254                 }
10255         }
10256
10257 #ifdef CONFIG_PCI_IOV
10258         /* prep for VF support */
10259         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10260             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10261             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10262                 u32 val;
10263
10264                 /* disable link interrupts for VFs */
10265                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10266                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10267                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10268                 i40e_flush(hw);
10269
10270                 if (pci_num_vf(pdev)) {
10271                         dev_info(&pdev->dev,
10272                                  "Active VFs found, allocating resources.\n");
10273                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10274                         if (err)
10275                                 dev_info(&pdev->dev,
10276                                          "Error %d allocating resources for existing VFs\n",
10277                                          err);
10278                 }
10279         }
10280 #endif /* CONFIG_PCI_IOV */
10281
10282         pfs_found++;
10283
10284         i40e_dbg_pf_init(pf);
10285
10286         /* tell the firmware that we're starting */
10287         i40e_send_version(pf);
10288
10289         /* since everything's happy, start the service_task timer */
10290         mod_timer(&pf->service_timer,
10291                   round_jiffies(jiffies + pf->service_timer_period));
10292
10293 #ifdef I40E_FCOE
10294         /* create FCoE interface */
10295         i40e_fcoe_vsi_setup(pf);
10296
10297 #endif
10298         /* Get the negotiated link width and speed from PCI config space */
10299         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10300
10301         i40e_set_pci_config_data(hw, link_status);
10302
10303         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10304                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10305                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10306                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10307                  "Unknown"),
10308                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10309                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10310                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10311                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10312                  "Unknown"));
10313
10314         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10315             hw->bus.speed < i40e_bus_speed_8000) {
10316                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10317                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10318         }
10319
10320         /* get the requested speeds from the fw */
10321         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10322         if (err)
10323                 dev_info(&pf->pdev->dev,
10324                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10325                          i40e_stat_str(&pf->hw, err),
10326                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10327         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10328
10329         /* print a string summarizing features */
10330         i40e_print_features(pf);
10331
10332         return 0;
10333
10334         /* Unwind what we've done if something failed in the setup */
10335 err_vsis:
10336         set_bit(__I40E_DOWN, &pf->state);
10337         i40e_clear_interrupt_scheme(pf);
10338         kfree(pf->vsi);
10339 err_switch_setup:
10340         i40e_reset_interrupt_capability(pf);
10341         del_timer_sync(&pf->service_timer);
10342 err_mac_addr:
10343 err_configure_lan_hmc:
10344         (void)i40e_shutdown_lan_hmc(hw);
10345 err_init_lan_hmc:
10346         kfree(pf->qp_pile);
10347 err_sw_init:
10348 err_adminq_setup:
10349         (void)i40e_shutdown_adminq(hw);
10350 err_pf_reset:
10351         iounmap(hw->hw_addr);
10352 err_ioremap:
10353         kfree(pf);
10354 err_pf_alloc:
10355         pci_disable_pcie_error_reporting(pdev);
10356         pci_release_selected_regions(pdev,
10357                                      pci_select_bars(pdev, IORESOURCE_MEM));
10358 err_pci_reg:
10359 err_dma:
10360         pci_disable_device(pdev);
10361         return err;
10362 }
10363
10364 /**
10365  * i40e_remove - Device removal routine
10366  * @pdev: PCI device information struct
10367  *
10368  * i40e_remove is called by the PCI subsystem to alert the driver
10369  * that is should release a PCI device.  This could be caused by a
10370  * Hot-Plug event, or because the driver is going to be removed from
10371  * memory.
10372  **/
10373 static void i40e_remove(struct pci_dev *pdev)
10374 {
10375         struct i40e_pf *pf = pci_get_drvdata(pdev);
10376         i40e_status ret_code;
10377         int i;
10378
10379         i40e_dbg_pf_exit(pf);
10380
10381         i40e_ptp_stop(pf);
10382
10383         /* no more scheduling of any task */
10384         set_bit(__I40E_DOWN, &pf->state);
10385         del_timer_sync(&pf->service_timer);
10386         cancel_work_sync(&pf->service_task);
10387         i40e_fdir_teardown(pf);
10388
10389         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10390                 i40e_free_vfs(pf);
10391                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10392         }
10393
10394         i40e_fdir_teardown(pf);
10395
10396         /* If there is a switch structure or any orphans, remove them.
10397          * This will leave only the PF's VSI remaining.
10398          */
10399         for (i = 0; i < I40E_MAX_VEB; i++) {
10400                 if (!pf->veb[i])
10401                         continue;
10402
10403                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10404                     pf->veb[i]->uplink_seid == 0)
10405                         i40e_switch_branch_release(pf->veb[i]);
10406         }
10407
10408         /* Now we can shutdown the PF's VSI, just before we kill
10409          * adminq and hmc.
10410          */
10411         if (pf->vsi[pf->lan_vsi])
10412                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10413
10414         /* shutdown and destroy the HMC */
10415         if (pf->hw.hmc.hmc_obj) {
10416                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10417                 if (ret_code)
10418                         dev_warn(&pdev->dev,
10419                                  "Failed to destroy the HMC resources: %d\n",
10420                                  ret_code);
10421         }
10422
10423         /* shutdown the adminq */
10424         ret_code = i40e_shutdown_adminq(&pf->hw);
10425         if (ret_code)
10426                 dev_warn(&pdev->dev,
10427                          "Failed to destroy the Admin Queue resources: %d\n",
10428                          ret_code);
10429
10430         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10431         i40e_clear_interrupt_scheme(pf);
10432         for (i = 0; i < pf->num_alloc_vsi; i++) {
10433                 if (pf->vsi[i]) {
10434                         i40e_vsi_clear_rings(pf->vsi[i]);
10435                         i40e_vsi_clear(pf->vsi[i]);
10436                         pf->vsi[i] = NULL;
10437                 }
10438         }
10439
10440         for (i = 0; i < I40E_MAX_VEB; i++) {
10441                 kfree(pf->veb[i]);
10442                 pf->veb[i] = NULL;
10443         }
10444
10445         kfree(pf->qp_pile);
10446         kfree(pf->vsi);
10447
10448         iounmap(pf->hw.hw_addr);
10449         kfree(pf);
10450         pci_release_selected_regions(pdev,
10451                                      pci_select_bars(pdev, IORESOURCE_MEM));
10452
10453         pci_disable_pcie_error_reporting(pdev);
10454         pci_disable_device(pdev);
10455 }
10456
10457 /**
10458  * i40e_pci_error_detected - warning that something funky happened in PCI land
10459  * @pdev: PCI device information struct
10460  *
10461  * Called to warn that something happened and the error handling steps
10462  * are in progress.  Allows the driver to quiesce things, be ready for
10463  * remediation.
10464  **/
10465 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10466                                                 enum pci_channel_state error)
10467 {
10468         struct i40e_pf *pf = pci_get_drvdata(pdev);
10469
10470         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10471
10472         /* shutdown all operations */
10473         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10474                 rtnl_lock();
10475                 i40e_prep_for_reset(pf);
10476                 rtnl_unlock();
10477         }
10478
10479         /* Request a slot reset */
10480         return PCI_ERS_RESULT_NEED_RESET;
10481 }
10482
10483 /**
10484  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10485  * @pdev: PCI device information struct
10486  *
10487  * Called to find if the driver can work with the device now that
10488  * the pci slot has been reset.  If a basic connection seems good
10489  * (registers are readable and have sane content) then return a
10490  * happy little PCI_ERS_RESULT_xxx.
10491  **/
10492 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10493 {
10494         struct i40e_pf *pf = pci_get_drvdata(pdev);
10495         pci_ers_result_t result;
10496         int err;
10497         u32 reg;
10498
10499         dev_info(&pdev->dev, "%s\n", __func__);
10500         if (pci_enable_device_mem(pdev)) {
10501                 dev_info(&pdev->dev,
10502                          "Cannot re-enable PCI device after reset.\n");
10503                 result = PCI_ERS_RESULT_DISCONNECT;
10504         } else {
10505                 pci_set_master(pdev);
10506                 pci_restore_state(pdev);
10507                 pci_save_state(pdev);
10508                 pci_wake_from_d3(pdev, false);
10509
10510                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10511                 if (reg == 0)
10512                         result = PCI_ERS_RESULT_RECOVERED;
10513                 else
10514                         result = PCI_ERS_RESULT_DISCONNECT;
10515         }
10516
10517         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10518         if (err) {
10519                 dev_info(&pdev->dev,
10520                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10521                          err);
10522                 /* non-fatal, continue */
10523         }
10524
10525         return result;
10526 }
10527
10528 /**
10529  * i40e_pci_error_resume - restart operations after PCI error recovery
10530  * @pdev: PCI device information struct
10531  *
10532  * Called to allow the driver to bring things back up after PCI error
10533  * and/or reset recovery has finished.
10534  **/
10535 static void i40e_pci_error_resume(struct pci_dev *pdev)
10536 {
10537         struct i40e_pf *pf = pci_get_drvdata(pdev);
10538
10539         dev_info(&pdev->dev, "%s\n", __func__);
10540         if (test_bit(__I40E_SUSPENDED, &pf->state))
10541                 return;
10542
10543         rtnl_lock();
10544         i40e_handle_reset_warning(pf);
10545         rtnl_unlock();
10546 }
10547
10548 /**
10549  * i40e_shutdown - PCI callback for shutting down
10550  * @pdev: PCI device information struct
10551  **/
10552 static void i40e_shutdown(struct pci_dev *pdev)
10553 {
10554         struct i40e_pf *pf = pci_get_drvdata(pdev);
10555         struct i40e_hw *hw = &pf->hw;
10556
10557         set_bit(__I40E_SUSPENDED, &pf->state);
10558         set_bit(__I40E_DOWN, &pf->state);
10559         rtnl_lock();
10560         i40e_prep_for_reset(pf);
10561         rtnl_unlock();
10562
10563         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10564         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10565
10566         del_timer_sync(&pf->service_timer);
10567         cancel_work_sync(&pf->service_task);
10568         i40e_fdir_teardown(pf);
10569
10570         rtnl_lock();
10571         i40e_prep_for_reset(pf);
10572         rtnl_unlock();
10573
10574         wr32(hw, I40E_PFPM_APM,
10575              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10576         wr32(hw, I40E_PFPM_WUFC,
10577              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10578
10579         i40e_clear_interrupt_scheme(pf);
10580
10581         if (system_state == SYSTEM_POWER_OFF) {
10582                 pci_wake_from_d3(pdev, pf->wol_en);
10583                 pci_set_power_state(pdev, PCI_D3hot);
10584         }
10585 }
10586
10587 #ifdef CONFIG_PM
10588 /**
10589  * i40e_suspend - PCI callback for moving to D3
10590  * @pdev: PCI device information struct
10591  **/
10592 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10593 {
10594         struct i40e_pf *pf = pci_get_drvdata(pdev);
10595         struct i40e_hw *hw = &pf->hw;
10596
10597         set_bit(__I40E_SUSPENDED, &pf->state);
10598         set_bit(__I40E_DOWN, &pf->state);
10599
10600         rtnl_lock();
10601         i40e_prep_for_reset(pf);
10602         rtnl_unlock();
10603
10604         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10605         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10606
10607         pci_wake_from_d3(pdev, pf->wol_en);
10608         pci_set_power_state(pdev, PCI_D3hot);
10609
10610         return 0;
10611 }
10612
10613 /**
10614  * i40e_resume - PCI callback for waking up from D3
10615  * @pdev: PCI device information struct
10616  **/
10617 static int i40e_resume(struct pci_dev *pdev)
10618 {
10619         struct i40e_pf *pf = pci_get_drvdata(pdev);
10620         u32 err;
10621
10622         pci_set_power_state(pdev, PCI_D0);
10623         pci_restore_state(pdev);
10624         /* pci_restore_state() clears dev->state_saves, so
10625          * call pci_save_state() again to restore it.
10626          */
10627         pci_save_state(pdev);
10628
10629         err = pci_enable_device_mem(pdev);
10630         if (err) {
10631                 dev_err(&pdev->dev,
10632                         "%s: Cannot enable PCI device from suspend\n",
10633                         __func__);
10634                 return err;
10635         }
10636         pci_set_master(pdev);
10637
10638         /* no wakeup events while running */
10639         pci_wake_from_d3(pdev, false);
10640
10641         /* handling the reset will rebuild the device state */
10642         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10643                 clear_bit(__I40E_DOWN, &pf->state);
10644                 rtnl_lock();
10645                 i40e_reset_and_rebuild(pf, false);
10646                 rtnl_unlock();
10647         }
10648
10649         return 0;
10650 }
10651
10652 #endif
10653 static const struct pci_error_handlers i40e_err_handler = {
10654         .error_detected = i40e_pci_error_detected,
10655         .slot_reset = i40e_pci_error_slot_reset,
10656         .resume = i40e_pci_error_resume,
10657 };
10658
10659 static struct pci_driver i40e_driver = {
10660         .name     = i40e_driver_name,
10661         .id_table = i40e_pci_tbl,
10662         .probe    = i40e_probe,
10663         .remove   = i40e_remove,
10664 #ifdef CONFIG_PM
10665         .suspend  = i40e_suspend,
10666         .resume   = i40e_resume,
10667 #endif
10668         .shutdown = i40e_shutdown,
10669         .err_handler = &i40e_err_handler,
10670         .sriov_configure = i40e_pci_sriov_configure,
10671 };
10672
10673 /**
10674  * i40e_init_module - Driver registration routine
10675  *
10676  * i40e_init_module is the first routine called when the driver is
10677  * loaded. All it does is register with the PCI subsystem.
10678  **/
10679 static int __init i40e_init_module(void)
10680 {
10681         pr_info("%s: %s - version %s\n", i40e_driver_name,
10682                 i40e_driver_string, i40e_driver_version_str);
10683         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10684
10685         i40e_dbg_init();
10686         return pci_register_driver(&i40e_driver);
10687 }
10688 module_init(i40e_init_module);
10689
10690 /**
10691  * i40e_exit_module - Driver exit cleanup routine
10692  *
10693  * i40e_exit_module is called just before the driver is removed
10694  * from memory.
10695  **/
10696 static void __exit i40e_exit_module(void)
10697 {
10698         pci_unregister_driver(&i40e_driver);
10699         i40e_dbg_exit();
10700 }
10701 module_exit(i40e_exit_module);