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 #if IS_ENABLED(CONFIG_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 4
  42 #define DRV_VERSION_BUILD 4
  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_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  59                               u16 rss_table_size, u16 rss_size);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  87         /* required last entry */
  88         {0, }
  89 };
  90 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  91
  92 #define I40E_MAX_VF_COUNT 128
  93 static int debug = -1;
  94 module_param(debug, int, 0);
  95 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  96
  97 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  98 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  99 MODULE_LICENSE("GPL");
 100 MODULE_VERSION(DRV_VERSION);
 101
 102 /**
 103  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 104  * @hw:   pointer to the HW structure
 105  * @mem:  ptr to mem struct to fill out
 106  * @size: size of memory requested
 107  * @alignment: what to align the allocation to
 108  **/
 109 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 110                             u64 size, u32 alignment)
 111 {
 112         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 113
 114         mem->size = ALIGN(size, alignment);
 115         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 116                                       &mem->pa, GFP_KERNEL);
 117         if (!mem->va)
 118                 return -ENOMEM;
 119
 120         return 0;
 121 }
 122
 123 /**
 124  * i40e_free_dma_mem_d - OS specific memory free for shared code
 125  * @hw:   pointer to the HW structure
 126  * @mem:  ptr to mem struct to free
 127  **/
 128 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 129 {
 130         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 131
 132         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 133         mem->va = NULL;
 134         mem->pa = 0;
 135         mem->size = 0;
 136
 137         return 0;
 138 }
 139
 140 /**
 141  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 142  * @hw:   pointer to the HW structure
 143  * @mem:  ptr to mem struct to fill out
 144  * @size: size of memory requested
 145  **/
 146 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 147                              u32 size)
 148 {
 149         mem->size = size;
 150         mem->va = kzalloc(size, GFP_KERNEL);
 151
 152         if (!mem->va)
 153                 return -ENOMEM;
 154
 155         return 0;
 156 }
 157
 158 /**
 159  * i40e_free_virt_mem_d - OS specific memory free for shared code
 160  * @hw:   pointer to the HW structure
 161  * @mem:  ptr to mem struct to free
 162  **/
 163 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 164 {
 165         /* it's ok to kfree a NULL pointer */
 166         kfree(mem->va);
 167         mem->va = NULL;
 168         mem->size = 0;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * i40e_get_lump - find a lump of free generic resource
 175  * @pf: board private structure
 176  * @pile: the pile of resource to search
 177  * @needed: the number of items needed
 178  * @id: an owner id to stick on the items assigned
 179  *
 180  * Returns the base item index of the lump, or negative for error
 181  *
 182  * The search_hint trick and lack of advanced fit-finding only work
 183  * because we're highly likely to have all the same size lump requests.
 184  * Linear search time and any fragmentation should be minimal.
 185  **/
 186 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 187                          u16 needed, u16 id)
 188 {
 189         int ret = -ENOMEM;
 190         int i, j;
 191
 192         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 193                 dev_info(&pf->pdev->dev,
 194                          "param err: pile=%p needed=%d id=0x%04x\n",
 195                          pile, needed, id);
 196                 return -EINVAL;
 197         }
 198
 199         /* start the linear search with an imperfect hint */
 200         i = pile->search_hint;
 201         while (i < pile->num_entries) {
 202                 /* skip already allocated entries */
 203                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 204                         i++;
 205                         continue;
 206                 }
 207
 208                 /* do we have enough in this lump? */
 209                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 210                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 211                                 break;
 212                 }
 213
 214                 if (j == needed) {
 215                         /* there was enough, so assign it to the requestor */
 216                         for (j = 0; j < needed; j++)
 217                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 218                         ret = i;
 219                         pile->search_hint = i + j;
 220                         break;
 221                 }
 222
 223                 /* not enough, so skip over it and continue looking */
 224                 i += j;
 225         }
 226
 227         return ret;
 228 }
 229
 230 /**
 231  * i40e_put_lump - return a lump of generic resource
 232  * @pile: the pile of resource to search
 233  * @index: the base item index
 234  * @id: the owner id of the items assigned
 235  *
 236  * Returns the count of items in the lump
 237  **/
 238 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 239 {
 240         int valid_id = (id | I40E_PILE_VALID_BIT);
 241         int count = 0;
 242         int i;
 243
 244         if (!pile || index >= pile->num_entries)
 245                 return -EINVAL;
 246
 247         for (i = index;
 248              i < pile->num_entries && pile->list[i] == valid_id;
 249              i++) {
 250                 pile->list[i] = 0;
 251                 count++;
 252         }
 253
 254         if (count && index < pile->search_hint)
 255                 pile->search_hint = index;
 256
 257         return count;
 258 }
 259
 260 /**
 261  * i40e_find_vsi_from_id - searches for the vsi with the given id
 262  * @pf - the pf structure to search for the vsi
 263  * @id - id of the vsi it is searching for
 264  **/
 265 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 266 {
 267         int i;
 268
 269         for (i = 0; i < pf->num_alloc_vsi; i++)
 270                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 271                         return pf->vsi[i];
 272
 273         return NULL;
 274 }
 275
 276 /**
 277  * i40e_service_event_schedule - Schedule the service task to wake up
 278  * @pf: board private structure
 279  *
 280  * If not already scheduled, this puts the task into the work queue
 281  **/
 282 static void i40e_service_event_schedule(struct i40e_pf *pf)
 283 {
 284         if (!test_bit(__I40E_DOWN, &pf->state) &&
 285             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 286             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 287                 schedule_work(&pf->service_task);
 288 }
 289
 290 /**
 291  * i40e_tx_timeout - Respond to a Tx Hang
 292  * @netdev: network interface device structure
 293  *
 294  * If any port has noticed a Tx timeout, it is likely that the whole
 295  * device is munged, not just the one netdev port, so go for the full
 296  * reset.
 297  **/
 298 #ifdef I40E_FCOE
 299 void i40e_tx_timeout(struct net_device *netdev)
 300 #else
 301 static void i40e_tx_timeout(struct net_device *netdev)
 302 #endif
 303 {
 304         struct i40e_netdev_priv *np = netdev_priv(netdev);
 305         struct i40e_vsi *vsi = np->vsi;
 306         struct i40e_pf *pf = vsi->back;
 307         struct i40e_ring *tx_ring = NULL;
 308         unsigned int i, hung_queue = 0;
 309         u32 head, val;
 310
 311         pf->tx_timeout_count++;
 312
 313         /* find the stopped queue the same way the stack does */
 314         for (i = 0; i < netdev->num_tx_queues; i++) {
 315                 struct netdev_queue *q;
 316                 unsigned long trans_start;
 317
 318                 q = netdev_get_tx_queue(netdev, i);
 319                 trans_start = q->trans_start ? : netdev->trans_start;
 320                 if (netif_xmit_stopped(q) &&
 321                     time_after(jiffies,
 322                                (trans_start + netdev->watchdog_timeo))) {
 323                         hung_queue = i;
 324                         break;
 325                 }
 326         }
 327
 328         if (i == netdev->num_tx_queues) {
 329                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 330         } else {
 331                 /* now that we have an index, find the tx_ring struct */
 332                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 333                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 334                                 if (hung_queue ==
 335                                     vsi->tx_rings[i]->queue_index) {
 336                                         tx_ring = vsi->tx_rings[i];
 337                                         break;
 338                                 }
 339                         }
 340                 }
 341         }
 342
 343         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 344                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 345         else if (time_before(jiffies,
 346                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 347                 return;   /* don't do any new action before the next timeout */
 348
 349         if (tx_ring) {
 350                 head = i40e_get_head(tx_ring);
 351                 /* Read interrupt register */
 352                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 353                         val = rd32(&pf->hw,
 354                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 355                                                 tx_ring->vsi->base_vector - 1));
 356                 else
 357                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 358
 359                 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",
 360                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 361                             head, tx_ring->next_to_use,
 362                             readl(tx_ring->tail), val);
 363         }
 364
 365         pf->tx_timeout_last_recovery = jiffies;
 366         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 367                     pf->tx_timeout_recovery_level, hung_queue);
 368
 369         switch (pf->tx_timeout_recovery_level) {
 370         case 1:
 371                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 372                 break;
 373         case 2:
 374                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 375                 break;
 376         case 3:
 377                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 378                 break;
 379         default:
 380                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 381                 break;
 382         }
 383
 384         i40e_service_event_schedule(pf);
 385         pf->tx_timeout_recovery_level++;
 386 }
 387
 388 /**
 389  * i40e_release_rx_desc - Store the new tail and head values
 390  * @rx_ring: ring to bump
 391  * @val: new head index
 392  **/
 393 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 394 {
 395         rx_ring->next_to_use = val;
 396
 397         /* Force memory writes to complete before letting h/w
 398          * know there are new descriptors to fetch.  (Only
 399          * applicable for weak-ordered memory model archs,
 400          * such as IA-64).
 401          */
 402         wmb();
 403         writel(val, rx_ring->tail);
 404 }
 405
 406 /**
 407  * i40e_get_vsi_stats_struct - Get System Network Statistics
 408  * @vsi: the VSI we care about
 409  *
 410  * Returns the address of the device statistics structure.
 411  * The statistics are actually updated from the service task.
 412  **/
 413 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 414 {
 415         return &vsi->net_stats;
 416 }
 417
 418 /**
 419  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 420  * @netdev: network interface device structure
 421  *
 422  * Returns the address of the device statistics structure.
 423  * The statistics are actually updated from the service task.
 424  **/
 425 #ifdef I40E_FCOE
 426 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 427                                              struct net_device *netdev,
 428                                              struct rtnl_link_stats64 *stats)
 429 #else
 430 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 431                                              struct net_device *netdev,
 432                                              struct rtnl_link_stats64 *stats)
 433 #endif
 434 {
 435         struct i40e_netdev_priv *np = netdev_priv(netdev);
 436         struct i40e_ring *tx_ring, *rx_ring;
 437         struct i40e_vsi *vsi = np->vsi;
 438         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 439         int i;
 440
 441         if (test_bit(__I40E_DOWN, &vsi->state))
 442                 return stats;
 443
 444         if (!vsi->tx_rings)
 445                 return stats;
 446
 447         rcu_read_lock();
 448         for (i = 0; i < vsi->num_queue_pairs; i++) {
 449                 u64 bytes, packets;
 450                 unsigned int start;
 451
 452                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 453                 if (!tx_ring)
 454                         continue;
 455
 456                 do {
 457                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 458                         packets = tx_ring->stats.packets;
 459                         bytes   = tx_ring->stats.bytes;
 460                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 461
 462                 stats->tx_packets += packets;
 463                 stats->tx_bytes   += bytes;
 464                 rx_ring = &tx_ring[1];
 465
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 468                         packets = rx_ring->stats.packets;
 469                         bytes   = rx_ring->stats.bytes;
 470                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 471
 472                 stats->rx_packets += packets;
 473                 stats->rx_bytes   += bytes;
 474         }
 475         rcu_read_unlock();
 476
 477         /* following stats updated by i40e_watchdog_subtask() */
 478         stats->multicast        = vsi_stats->multicast;
 479         stats->tx_errors        = vsi_stats->tx_errors;
 480         stats->tx_dropped       = vsi_stats->tx_dropped;
 481         stats->rx_errors        = vsi_stats->rx_errors;
 482         stats->rx_dropped       = vsi_stats->rx_dropped;
 483         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 484         stats->rx_length_errors = vsi_stats->rx_length_errors;
 485
 486         return stats;
 487 }
 488
 489 /**
 490  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 491  * @vsi: the VSI to have its stats reset
 492  **/
 493 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 494 {
 495         struct rtnl_link_stats64 *ns;
 496         int i;
 497
 498         if (!vsi)
 499                 return;
 500
 501         ns = i40e_get_vsi_stats_struct(vsi);
 502         memset(ns, 0, sizeof(*ns));
 503         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 504         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 505         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 506         if (vsi->rx_rings && vsi->rx_rings[0]) {
 507                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 508                         memset(&vsi->rx_rings[i]->stats, 0,
 509                                sizeof(vsi->rx_rings[i]->stats));
 510                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 511                                sizeof(vsi->rx_rings[i]->rx_stats));
 512                         memset(&vsi->tx_rings[i]->stats, 0,
 513                                sizeof(vsi->tx_rings[i]->stats));
 514                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 515                                sizeof(vsi->tx_rings[i]->tx_stats));
 516                 }
 517         }
 518         vsi->stat_offsets_loaded = false;
 519 }
 520
 521 /**
 522  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 523  * @pf: the PF to be reset
 524  **/
 525 void i40e_pf_reset_stats(struct i40e_pf *pf)
 526 {
 527         int i;
 528
 529         memset(&pf->stats, 0, sizeof(pf->stats));
 530         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 531         pf->stat_offsets_loaded = false;
 532
 533         for (i = 0; i < I40E_MAX_VEB; i++) {
 534                 if (pf->veb[i]) {
 535                         memset(&pf->veb[i]->stats, 0,
 536                                sizeof(pf->veb[i]->stats));
 537                         memset(&pf->veb[i]->stats_offsets, 0,
 538                                sizeof(pf->veb[i]->stats_offsets));
 539                         pf->veb[i]->stat_offsets_loaded = false;
 540                 }
 541         }
 542 }
 543
 544 /**
 545  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 546  * @hw: ptr to the hardware info
 547  * @hireg: the high 32 bit reg to read
 548  * @loreg: the low 32 bit reg to read
 549  * @offset_loaded: has the initial offset been loaded yet
 550  * @offset: ptr to current offset value
 551  * @stat: ptr to the stat
 552  *
 553  * Since the device stats are not reset at PFReset, they likely will not
 554  * be zeroed when the driver starts.  We'll save the first values read
 555  * and use them as offsets to be subtracted from the raw values in order
 556  * to report stats that count from zero.  In the process, we also manage
 557  * the potential roll-over.
 558  **/
 559 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 560                                bool offset_loaded, u64 *offset, u64 *stat)
 561 {
 562         u64 new_data;
 563
 564         if (hw->device_id == I40E_DEV_ID_QEMU) {
 565                 new_data = rd32(hw, loreg);
 566                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 567         } else {
 568                 new_data = rd64(hw, loreg);
 569         }
 570         if (!offset_loaded)
 571                 *offset = new_data;
 572         if (likely(new_data >= *offset))
 573                 *stat = new_data - *offset;
 574         else
 575                 *stat = (new_data + BIT_ULL(48)) - *offset;
 576         *stat &= 0xFFFFFFFFFFFFULL;
 577 }
 578
 579 /**
 580  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 581  * @hw: ptr to the hardware info
 582  * @reg: the hw reg to read
 583  * @offset_loaded: has the initial offset been loaded yet
 584  * @offset: ptr to current offset value
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 588                                bool offset_loaded, u64 *offset, u64 *stat)
 589 {
 590         u32 new_data;
 591
 592         new_data = rd32(hw, reg);
 593         if (!offset_loaded)
 594                 *offset = new_data;
 595         if (likely(new_data >= *offset))
 596                 *stat = (u32)(new_data - *offset);
 597         else
 598                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 599 }
 600
 601 /**
 602  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 603  * @vsi: the VSI to be updated
 604  **/
 605 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 606 {
 607         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 608         struct i40e_pf *pf = vsi->back;
 609         struct i40e_hw *hw = &pf->hw;
 610         struct i40e_eth_stats *oes;
 611         struct i40e_eth_stats *es;     /* device's eth stats */
 612
 613         es = &vsi->eth_stats;
 614         oes = &vsi->eth_stats_offsets;
 615
 616         /* Gather up the stats that the hw collects */
 617         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->tx_errors, &es->tx_errors);
 620         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_discards, &es->rx_discards);
 623         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 626         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->tx_errors, &es->tx_errors);
 629
 630         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 631                            I40E_GLV_GORCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_bytes, &es->rx_bytes);
 634         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 635                            I40E_GLV_UPRCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->rx_unicast, &es->rx_unicast);
 638         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 639                            I40E_GLV_MPRCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->rx_multicast, &es->rx_multicast);
 642         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 643                            I40E_GLV_BPRCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->rx_broadcast, &es->rx_broadcast);
 646
 647         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 648                            I40E_GLV_GOTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_bytes, &es->tx_bytes);
 651         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 652                            I40E_GLV_UPTCL(stat_idx),
 653                            vsi->stat_offsets_loaded,
 654                            &oes->tx_unicast, &es->tx_unicast);
 655         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 656                            I40E_GLV_MPTCL(stat_idx),
 657                            vsi->stat_offsets_loaded,
 658                            &oes->tx_multicast, &es->tx_multicast);
 659         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 660                            I40E_GLV_BPTCL(stat_idx),
 661                            vsi->stat_offsets_loaded,
 662                            &oes->tx_broadcast, &es->tx_broadcast);
 663         vsi->stat_offsets_loaded = true;
 664 }
 665
 666 /**
 667  * i40e_update_veb_stats - Update Switch component statistics
 668  * @veb: the VEB being updated
 669  **/
 670 static void i40e_update_veb_stats(struct i40e_veb *veb)
 671 {
 672         struct i40e_pf *pf = veb->pf;
 673         struct i40e_hw *hw = &pf->hw;
 674         struct i40e_eth_stats *oes;
 675         struct i40e_eth_stats *es;     /* device's eth stats */
 676         struct i40e_veb_tc_stats *veb_oes;
 677         struct i40e_veb_tc_stats *veb_es;
 678         int i, idx = 0;
 679
 680         idx = veb->stats_idx;
 681         es = &veb->stats;
 682         oes = &veb->stats_offsets;
 683         veb_es = &veb->tc_stats;
 684         veb_oes = &veb->tc_stats_offsets;
 685
 686         /* Gather up the stats that the hw collects */
 687         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->tx_discards, &es->tx_discards);
 690         if (hw->revision_id > 0)
 691                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 692                                    veb->stat_offsets_loaded,
 693                                    &oes->rx_unknown_protocol,
 694                                    &es->rx_unknown_protocol);
 695         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_bytes, &es->rx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_unicast, &es->rx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->rx_multicast, &es->rx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->rx_broadcast, &es->rx_broadcast);
 707
 708         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_bytes, &es->tx_bytes);
 711         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_unicast, &es->tx_unicast);
 714         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->tx_multicast, &es->tx_multicast);
 717         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 718                            veb->stat_offsets_loaded,
 719                            &oes->tx_broadcast, &es->tx_broadcast);
 720         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 721                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 722                                    I40E_GLVEBTC_RPCL(i, idx),
 723                                    veb->stat_offsets_loaded,
 724                                    &veb_oes->tc_rx_packets[i],
 725                                    &veb_es->tc_rx_packets[i]);
 726                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 727                                    I40E_GLVEBTC_RBCL(i, idx),
 728                                    veb->stat_offsets_loaded,
 729                                    &veb_oes->tc_rx_bytes[i],
 730                                    &veb_es->tc_rx_bytes[i]);
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 732                                    I40E_GLVEBTC_TPCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_tx_packets[i],
 735                                    &veb_es->tc_tx_packets[i]);
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 737                                    I40E_GLVEBTC_TBCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_tx_bytes[i],
 740                                    &veb_es->tc_tx_bytes[i]);
 741         }
 742         veb->stat_offsets_loaded = true;
 743 }
 744
 745 #ifdef I40E_FCOE
 746 /**
 747  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 748  * @vsi: the VSI that is capable of doing FCoE
 749  **/
 750 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 751 {
 752         struct i40e_pf *pf = vsi->back;
 753         struct i40e_hw *hw = &pf->hw;
 754         struct i40e_fcoe_stats *ofs;
 755         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 756         int idx;
 757
 758         if (vsi->type != I40E_VSI_FCOE)
 759                 return;
 760
 761         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 762         fs = &vsi->fcoe_stats;
 763         ofs = &vsi->fcoe_stats_offsets;
 764
 765         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 768         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 771         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 774         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 777         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 780         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 783         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 786         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 787                            vsi->fcoe_stat_offsets_loaded,
 788                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 789
 790         vsi->fcoe_stat_offsets_loaded = true;
 791 }
 792
 793 #endif
 794 /**
 795  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 796  * @pf: the corresponding PF
 797  *
 798  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 799  **/
 800 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 801 {
 802         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 803         struct i40e_hw_port_stats *nsd = &pf->stats;
 804         struct i40e_hw *hw = &pf->hw;
 805         u64 xoff = 0;
 806
 807         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 808             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 809                 return;
 810
 811         xoff = nsd->link_xoff_rx;
 812         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 813                            pf->stat_offsets_loaded,
 814                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 815
 816         /* No new LFC xoff rx */
 817         if (!(nsd->link_xoff_rx - xoff))
 818                 return;
 819
 820 }
 821
 822 /**
 823  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 824  * @pf: the corresponding PF
 825  *
 826  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 827  **/
 828 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 829 {
 830         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 831         struct i40e_hw_port_stats *nsd = &pf->stats;
 832         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 833         struct i40e_dcbx_config *dcb_cfg;
 834         struct i40e_hw *hw = &pf->hw;
 835         u16 i;
 836         u8 tc;
 837
 838         dcb_cfg = &hw->local_dcbx_config;
 839
 840         /* Collect Link XOFF stats when PFC is disabled */
 841         if (!dcb_cfg->pfc.pfcenable) {
 842                 i40e_update_link_xoff_rx(pf);
 843                 return;
 844         }
 845
 846         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 847                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 848
 849                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 850                                    pf->stat_offsets_loaded,
 851                                    &osd->priority_xoff_rx[i],
 852                                    &nsd->priority_xoff_rx[i]);
 853
 854                 /* No new PFC xoff rx */
 855                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 856                         continue;
 857                 /* Get the TC for given priority */
 858                 tc = dcb_cfg->etscfg.prioritytable[i];
 859                 xoff[tc] = true;
 860         }
 861 }
 862
 863 /**
 864  * i40e_update_vsi_stats - Update the vsi statistics counters.
 865  * @vsi: the VSI to be updated
 866  *
 867  * There are a few instances where we store the same stat in a
 868  * couple of different structs.  This is partly because we have
 869  * the netdev stats that need to be filled out, which is slightly
 870  * different from the "eth_stats" defined by the chip and used in
 871  * VF communications.  We sort it out here.
 872  **/
 873 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 874 {
 875         struct i40e_pf *pf = vsi->back;
 876         struct rtnl_link_stats64 *ons;
 877         struct rtnl_link_stats64 *ns;   /* netdev stats */
 878         struct i40e_eth_stats *oes;
 879         struct i40e_eth_stats *es;     /* device's eth stats */
 880         u32 tx_restart, tx_busy;
 881         struct i40e_ring *p;
 882         u32 rx_page, rx_buf;
 883         u64 bytes, packets;
 884         unsigned int start;
 885         u64 tx_linearize;
 886         u64 tx_force_wb;
 887         u64 rx_p, rx_b;
 888         u64 tx_p, tx_b;
 889         u16 q;
 890
 891         if (test_bit(__I40E_DOWN, &vsi->state) ||
 892             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 893                 return;
 894
 895         ns = i40e_get_vsi_stats_struct(vsi);
 896         ons = &vsi->net_stats_offsets;
 897         es = &vsi->eth_stats;
 898         oes = &vsi->eth_stats_offsets;
 899
 900         /* Gather up the netdev and vsi stats that the driver collects
 901          * on the fly during packet processing
 902          */
 903         rx_b = rx_p = 0;
 904         tx_b = tx_p = 0;
 905         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 906         rx_page = 0;
 907         rx_buf = 0;
 908         rcu_read_lock();
 909         for (q = 0; q < vsi->num_queue_pairs; q++) {
 910                 /* locate Tx ring */
 911                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 912
 913                 do {
 914                         start = u64_stats_fetch_begin_irq(&p->syncp);
 915                         packets = p->stats.packets;
 916                         bytes = p->stats.bytes;
 917                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 918                 tx_b += bytes;
 919                 tx_p += packets;
 920                 tx_restart += p->tx_stats.restart_queue;
 921                 tx_busy += p->tx_stats.tx_busy;
 922                 tx_linearize += p->tx_stats.tx_linearize;
 923                 tx_force_wb += p->tx_stats.tx_force_wb;
 924
 925                 /* Rx queue is part of the same block as Tx queue */
 926                 p = &p[1];
 927                 do {
 928                         start = u64_stats_fetch_begin_irq(&p->syncp);
 929                         packets = p->stats.packets;
 930                         bytes = p->stats.bytes;
 931                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 932                 rx_b += bytes;
 933                 rx_p += packets;
 934                 rx_buf += p->rx_stats.alloc_buff_failed;
 935                 rx_page += p->rx_stats.alloc_page_failed;
 936         }
 937         rcu_read_unlock();
 938         vsi->tx_restart = tx_restart;
 939         vsi->tx_busy = tx_busy;
 940         vsi->tx_linearize = tx_linearize;
 941         vsi->tx_force_wb = tx_force_wb;
 942         vsi->rx_page_failed = rx_page;
 943         vsi->rx_buf_failed = rx_buf;
 944
 945         ns->rx_packets = rx_p;
 946         ns->rx_bytes = rx_b;
 947         ns->tx_packets = tx_p;
 948         ns->tx_bytes = tx_b;
 949
 950         /* update netdev stats from eth stats */
 951         i40e_update_eth_stats(vsi);
 952         ons->tx_errors = oes->tx_errors;
 953         ns->tx_errors = es->tx_errors;
 954         ons->multicast = oes->rx_multicast;
 955         ns->multicast = es->rx_multicast;
 956         ons->rx_dropped = oes->rx_discards;
 957         ns->rx_dropped = es->rx_discards;
 958         ons->tx_dropped = oes->tx_discards;
 959         ns->tx_dropped = es->tx_discards;
 960
 961         /* pull in a couple PF stats if this is the main vsi */
 962         if (vsi == pf->vsi[pf->lan_vsi]) {
 963                 ns->rx_crc_errors = pf->stats.crc_errors;
 964                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 965                 ns->rx_length_errors = pf->stats.rx_length_errors;
 966         }
 967 }
 968
 969 /**
 970  * i40e_update_pf_stats - Update the PF statistics counters.
 971  * @pf: the PF to be updated
 972  **/
 973 static void i40e_update_pf_stats(struct i40e_pf *pf)
 974 {
 975         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 976         struct i40e_hw_port_stats *nsd = &pf->stats;
 977         struct i40e_hw *hw = &pf->hw;
 978         u32 val;
 979         int i;
 980
 981         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 982                            I40E_GLPRT_GORCL(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 985         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 986                            I40E_GLPRT_GOTCL(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 989         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_discards,
 992                            &nsd->eth.rx_discards);
 993         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 994                            I40E_GLPRT_UPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_unicast,
 997                            &nsd->eth.rx_unicast);
 998         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 999                            I40E_GLPRT_MPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_multicast,
1002                            &nsd->eth.rx_multicast);
1003         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1004                            I40E_GLPRT_BPRCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.rx_broadcast,
1007                            &nsd->eth.rx_broadcast);
1008         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1009                            I40E_GLPRT_UPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_unicast,
1012                            &nsd->eth.tx_unicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1014                            I40E_GLPRT_MPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_multicast,
1017                            &nsd->eth.tx_multicast);
1018         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1019                            I40E_GLPRT_BPTCL(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->eth.tx_broadcast,
1022                            &nsd->eth.tx_broadcast);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->tx_dropped_link_down,
1027                            &nsd->tx_dropped_link_down);
1028
1029         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->crc_errors, &nsd->crc_errors);
1032
1033         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->illegal_bytes, &nsd->illegal_bytes);
1036
1037         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->mac_local_faults,
1040                            &nsd->mac_local_faults);
1041         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->mac_remote_faults,
1044                            &nsd->mac_remote_faults);
1045
1046         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_length_errors,
1049                            &nsd->rx_length_errors);
1050
1051         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->link_xon_rx, &nsd->link_xon_rx);
1054         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->link_xon_tx, &nsd->link_xon_tx);
1057         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1058         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1061
1062         for (i = 0; i < 8; i++) {
1063                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1064                                    pf->stat_offsets_loaded,
1065                                    &osd->priority_xon_rx[i],
1066                                    &nsd->priority_xon_rx[i]);
1067                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1068                                    pf->stat_offsets_loaded,
1069                                    &osd->priority_xon_tx[i],
1070                                    &nsd->priority_xon_tx[i]);
1071                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1072                                    pf->stat_offsets_loaded,
1073                                    &osd->priority_xoff_tx[i],
1074                                    &nsd->priority_xoff_tx[i]);
1075                 i40e_stat_update32(hw,
1076                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1077                                    pf->stat_offsets_loaded,
1078                                    &osd->priority_xon_2_xoff[i],
1079                                    &nsd->priority_xon_2_xoff[i]);
1080         }
1081
1082         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1083                            I40E_GLPRT_PRC64L(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_size_64, &nsd->rx_size_64);
1086         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1087                            I40E_GLPRT_PRC127L(hw->port),
1088                            pf->stat_offsets_loaded,
1089                            &osd->rx_size_127, &nsd->rx_size_127);
1090         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1091                            I40E_GLPRT_PRC255L(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_size_255, &nsd->rx_size_255);
1094         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1095                            I40E_GLPRT_PRC511L(hw->port),
1096                            pf->stat_offsets_loaded,
1097                            &osd->rx_size_511, &nsd->rx_size_511);
1098         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1099                            I40E_GLPRT_PRC1023L(hw->port),
1100                            pf->stat_offsets_loaded,
1101                            &osd->rx_size_1023, &nsd->rx_size_1023);
1102         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1103                            I40E_GLPRT_PRC1522L(hw->port),
1104                            pf->stat_offsets_loaded,
1105                            &osd->rx_size_1522, &nsd->rx_size_1522);
1106         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1107                            I40E_GLPRT_PRC9522L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->rx_size_big, &nsd->rx_size_big);
1110
1111         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1112                            I40E_GLPRT_PTC64L(hw->port),
1113                            pf->stat_offsets_loaded,
1114                            &osd->tx_size_64, &nsd->tx_size_64);
1115         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1116                            I40E_GLPRT_PTC127L(hw->port),
1117                            pf->stat_offsets_loaded,
1118                            &osd->tx_size_127, &nsd->tx_size_127);
1119         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1120                            I40E_GLPRT_PTC255L(hw->port),
1121                            pf->stat_offsets_loaded,
1122                            &osd->tx_size_255, &nsd->tx_size_255);
1123         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1124                            I40E_GLPRT_PTC511L(hw->port),
1125                            pf->stat_offsets_loaded,
1126                            &osd->tx_size_511, &nsd->tx_size_511);
1127         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1128                            I40E_GLPRT_PTC1023L(hw->port),
1129                            pf->stat_offsets_loaded,
1130                            &osd->tx_size_1023, &nsd->tx_size_1023);
1131         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1132                            I40E_GLPRT_PTC1522L(hw->port),
1133                            pf->stat_offsets_loaded,
1134                            &osd->tx_size_1522, &nsd->tx_size_1522);
1135         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1136                            I40E_GLPRT_PTC9522L(hw->port),
1137                            pf->stat_offsets_loaded,
1138                            &osd->tx_size_big, &nsd->tx_size_big);
1139
1140         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_undersize, &nsd->rx_undersize);
1143         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1144                            pf->stat_offsets_loaded,
1145                            &osd->rx_fragments, &nsd->rx_fragments);
1146         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1147                            pf->stat_offsets_loaded,
1148                            &osd->rx_oversize, &nsd->rx_oversize);
1149         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1150                            pf->stat_offsets_loaded,
1151                            &osd->rx_jabber, &nsd->rx_jabber);
1152
1153         /* FDIR stats */
1154         i40e_stat_update32(hw,
1155                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1156                            pf->stat_offsets_loaded,
1157                            &osd->fd_atr_match, &nsd->fd_atr_match);
1158         i40e_stat_update32(hw,
1159                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1160                            pf->stat_offsets_loaded,
1161                            &osd->fd_sb_match, &nsd->fd_sb_match);
1162         i40e_stat_update32(hw,
1163                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1164                       pf->stat_offsets_loaded,
1165                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1166
1167         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1168         nsd->tx_lpi_status =
1169                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1170                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1171         nsd->rx_lpi_status =
1172                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1173                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1174         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1175                            pf->stat_offsets_loaded,
1176                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1177         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1178                            pf->stat_offsets_loaded,
1179                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1180
1181         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1182             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1183                 nsd->fd_sb_status = true;
1184         else
1185                 nsd->fd_sb_status = false;
1186
1187         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1188             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1189                 nsd->fd_atr_status = true;
1190         else
1191                 nsd->fd_atr_status = false;
1192
1193         pf->stat_offsets_loaded = true;
1194 }
1195
1196 /**
1197  * i40e_update_stats - Update the various statistics counters.
1198  * @vsi: the VSI to be updated
1199  *
1200  * Update the various stats for this VSI and its related entities.
1201  **/
1202 void i40e_update_stats(struct i40e_vsi *vsi)
1203 {
1204         struct i40e_pf *pf = vsi->back;
1205
1206         if (vsi == pf->vsi[pf->lan_vsi])
1207                 i40e_update_pf_stats(pf);
1208
1209         i40e_update_vsi_stats(vsi);
1210 #ifdef I40E_FCOE
1211         i40e_update_fcoe_stats(vsi);
1212 #endif
1213 }
1214
1215 /**
1216  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1217  * @vsi: the VSI to be searched
1218  * @macaddr: the MAC address
1219  * @vlan: the vlan
1220  * @is_vf: make sure its a VF filter, else doesn't matter
1221  * @is_netdev: make sure its a netdev filter, else doesn't matter
1222  *
1223  * Returns ptr to the filter object or NULL
1224  **/
1225 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1226                                                 u8 *macaddr, s16 vlan,
1227                                                 bool is_vf, bool is_netdev)
1228 {
1229         struct i40e_mac_filter *f;
1230
1231         if (!vsi || !macaddr)
1232                 return NULL;
1233
1234         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1235                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1236                     (vlan == f->vlan)    &&
1237                     (!is_vf || f->is_vf) &&
1238                     (!is_netdev || f->is_netdev))
1239                         return f;
1240         }
1241         return NULL;
1242 }
1243
1244 /**
1245  * i40e_find_mac - Find a mac addr in the macvlan filters list
1246  * @vsi: the VSI to be searched
1247  * @macaddr: the MAC address we are searching for
1248  * @is_vf: make sure its a VF filter, else doesn't matter
1249  * @is_netdev: make sure its a netdev filter, else doesn't matter
1250  *
1251  * Returns the first filter with the provided MAC address or NULL if
1252  * MAC address was not found
1253  **/
1254 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1255                                       bool is_vf, bool is_netdev)
1256 {
1257         struct i40e_mac_filter *f;
1258
1259         if (!vsi || !macaddr)
1260                 return NULL;
1261
1262         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1263                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1264                     (!is_vf || f->is_vf) &&
1265                     (!is_netdev || f->is_netdev))
1266                         return f;
1267         }
1268         return NULL;
1269 }
1270
1271 /**
1272  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1273  * @vsi: the VSI to be searched
1274  *
1275  * Returns true if VSI is in vlan mode or false otherwise
1276  **/
1277 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1278 {
1279         struct i40e_mac_filter *f;
1280
1281         /* Only -1 for all the filters denotes not in vlan mode
1282          * so we have to go through all the list in order to make sure
1283          */
1284         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1285                 if (f->vlan >= 0 || vsi->info.pvid)
1286                         return true;
1287         }
1288
1289         return false;
1290 }
1291
1292 /**
1293  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1294  * @vsi: the VSI to be searched
1295  * @macaddr: the mac address to be filtered
1296  * @is_vf: true if it is a VF
1297  * @is_netdev: true if it is a netdev
1298  *
1299  * Goes through all the macvlan filters and adds a
1300  * macvlan filter for each unique vlan that already exists
1301  *
1302  * Returns first filter found on success, else NULL
1303  **/
1304 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1305                                              bool is_vf, bool is_netdev)
1306 {
1307         struct i40e_mac_filter *f;
1308
1309         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1310                 if (vsi->info.pvid)
1311                         f->vlan = le16_to_cpu(vsi->info.pvid);
1312                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1313                                       is_vf, is_netdev)) {
1314                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1315                                              is_vf, is_netdev))
1316                                 return NULL;
1317                 }
1318         }
1319
1320         return list_first_entry_or_null(&vsi->mac_filter_list,
1321                                         struct i40e_mac_filter, list);
1322 }
1323
1324 /**
1325  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1326  * @vsi: the PF Main VSI - inappropriate for any other VSI
1327  * @macaddr: the MAC address
1328  *
1329  * Some older firmware configurations set up a default promiscuous VLAN
1330  * filter that needs to be removed.
1331  **/
1332 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1333 {
1334         struct i40e_aqc_remove_macvlan_element_data element;
1335         struct i40e_pf *pf = vsi->back;
1336         i40e_status ret;
1337
1338         /* Only appropriate for the PF main VSI */
1339         if (vsi->type != I40E_VSI_MAIN)
1340                 return -EINVAL;
1341
1342         memset(&element, 0, sizeof(element));
1343         ether_addr_copy(element.mac_addr, macaddr);
1344         element.vlan_tag = 0;
1345         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1346                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1347         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1348         if (ret)
1349                 return -ENOENT;
1350
1351         return 0;
1352 }
1353
1354 /**
1355  * i40e_add_filter - Add a mac/vlan filter to the VSI
1356  * @vsi: the VSI to be searched
1357  * @macaddr: the MAC address
1358  * @vlan: the vlan
1359  * @is_vf: make sure its a VF filter, else doesn't matter
1360  * @is_netdev: make sure its a netdev filter, else doesn't matter
1361  *
1362  * Returns ptr to the filter object or NULL when no memory available.
1363  *
1364  * NOTE: This function is expected to be called with mac_filter_list_lock
1365  * being held.
1366  **/
1367 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1368                                         u8 *macaddr, s16 vlan,
1369                                         bool is_vf, bool is_netdev)
1370 {
1371         struct i40e_mac_filter *f;
1372
1373         if (!vsi || !macaddr)
1374                 return NULL;
1375
1376         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1377         if (!f) {
1378                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1379                 if (!f)
1380                         goto add_filter_out;
1381
1382                 ether_addr_copy(f->macaddr, macaddr);
1383                 f->vlan = vlan;
1384                 f->changed = true;
1385
1386                 INIT_LIST_HEAD(&f->list);
1387                 list_add(&f->list, &vsi->mac_filter_list);
1388         }
1389
1390         /* increment counter and add a new flag if needed */
1391         if (is_vf) {
1392                 if (!f->is_vf) {
1393                         f->is_vf = true;
1394                         f->counter++;
1395                 }
1396         } else if (is_netdev) {
1397                 if (!f->is_netdev) {
1398                         f->is_netdev = true;
1399                         f->counter++;
1400                 }
1401         } else {
1402                 f->counter++;
1403         }
1404
1405         /* changed tells sync_filters_subtask to
1406          * push the filter down to the firmware
1407          */
1408         if (f->changed) {
1409                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1410                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1411         }
1412
1413 add_filter_out:
1414         return f;
1415 }
1416
1417 /**
1418  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1419  * @vsi: the VSI to be searched
1420  * @macaddr: the MAC address
1421  * @vlan: the vlan
1422  * @is_vf: make sure it's a VF filter, else doesn't matter
1423  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1424  *
1425  * NOTE: This function is expected to be called with mac_filter_list_lock
1426  * being held.
1427  **/
1428 void i40e_del_filter(struct i40e_vsi *vsi,
1429                      u8 *macaddr, s16 vlan,
1430                      bool is_vf, bool is_netdev)
1431 {
1432         struct i40e_mac_filter *f;
1433
1434         if (!vsi || !macaddr)
1435                 return;
1436
1437         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1438         if (!f || f->counter == 0)
1439                 return;
1440
1441         if (is_vf) {
1442                 if (f->is_vf) {
1443                         f->is_vf = false;
1444                         f->counter--;
1445                 }
1446         } else if (is_netdev) {
1447                 if (f->is_netdev) {
1448                         f->is_netdev = false;
1449                         f->counter--;
1450                 }
1451         } else {
1452                 /* make sure we don't remove a filter in use by VF or netdev */
1453                 int min_f = 0;
1454
1455                 min_f += (f->is_vf ? 1 : 0);
1456                 min_f += (f->is_netdev ? 1 : 0);
1457
1458                 if (f->counter > min_f)
1459                         f->counter--;
1460         }
1461
1462         /* counter == 0 tells sync_filters_subtask to
1463          * remove the filter from the firmware's list
1464          */
1465         if (f->counter == 0) {
1466                 f->changed = true;
1467                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1468                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1469         }
1470 }
1471
1472 /**
1473  * i40e_set_mac - NDO callback to set mac address
1474  * @netdev: network interface device structure
1475  * @p: pointer to an address structure
1476  *
1477  * Returns 0 on success, negative on failure
1478  **/
1479 #ifdef I40E_FCOE
1480 int i40e_set_mac(struct net_device *netdev, void *p)
1481 #else
1482 static int i40e_set_mac(struct net_device *netdev, void *p)
1483 #endif
1484 {
1485         struct i40e_netdev_priv *np = netdev_priv(netdev);
1486         struct i40e_vsi *vsi = np->vsi;
1487         struct i40e_pf *pf = vsi->back;
1488         struct i40e_hw *hw = &pf->hw;
1489         struct sockaddr *addr = p;
1490         struct i40e_mac_filter *f;
1491
1492         if (!is_valid_ether_addr(addr->sa_data))
1493                 return -EADDRNOTAVAIL;
1494
1495         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1496                 netdev_info(netdev, "already using mac address %pM\n",
1497                             addr->sa_data);
1498                 return 0;
1499         }
1500
1501         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1502             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1503                 return -EADDRNOTAVAIL;
1504
1505         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1506                 netdev_info(netdev, "returning to hw mac address %pM\n",
1507                             hw->mac.addr);
1508         else
1509                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1510
1511         if (vsi->type == I40E_VSI_MAIN) {
1512                 i40e_status ret;
1513
1514                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1515                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1516                                                 addr->sa_data, NULL);
1517                 if (ret) {
1518                         netdev_info(netdev,
1519                                     "Addr change for Main VSI failed: %d\n",
1520                                     ret);
1521                         return -EADDRNOTAVAIL;
1522                 }
1523         }
1524
1525         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1526                 struct i40e_aqc_remove_macvlan_element_data element;
1527
1528                 memset(&element, 0, sizeof(element));
1529                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1530                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1531                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1532         } else {
1533                 spin_lock_bh(&vsi->mac_filter_list_lock);
1534                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1535                                 false, false);
1536                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1537         }
1538
1539         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1540                 struct i40e_aqc_add_macvlan_element_data element;
1541
1542                 memset(&element, 0, sizeof(element));
1543                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1544                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1545                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1546         } else {
1547                 spin_lock_bh(&vsi->mac_filter_list_lock);
1548                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1549                                     false, false);
1550                 if (f)
1551                         f->is_laa = true;
1552                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1553         }
1554
1555         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1556
1557         return i40e_sync_vsi_filters(vsi);
1558 }
1559
1560 /**
1561  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1562  * @vsi: the VSI being setup
1563  * @ctxt: VSI context structure
1564  * @enabled_tc: Enabled TCs bitmap
1565  * @is_add: True if called before Add VSI
1566  *
1567  * Setup VSI queue mapping for enabled traffic classes.
1568  **/
1569 #ifdef I40E_FCOE
1570 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1571                               struct i40e_vsi_context *ctxt,
1572                               u8 enabled_tc,
1573                               bool is_add)
1574 #else
1575 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1576                                      struct i40e_vsi_context *ctxt,
1577                                      u8 enabled_tc,
1578                                      bool is_add)
1579 #endif
1580 {
1581         struct i40e_pf *pf = vsi->back;
1582         u16 sections = 0;
1583         u8 netdev_tc = 0;
1584         u16 numtc = 0;
1585         u16 qcount;
1586         u8 offset;
1587         u16 qmap;
1588         int i;
1589         u16 num_tc_qps = 0;
1590
1591         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1592         offset = 0;
1593
1594         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1595                 /* Find numtc from enabled TC bitmap */
1596                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1597                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1598                                 numtc++;
1599                 }
1600                 if (!numtc) {
1601                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1602                         numtc = 1;
1603                 }
1604         } else {
1605                 /* At least TC0 is enabled in case of non-DCB case */
1606                 numtc = 1;
1607         }
1608
1609         vsi->tc_config.numtc = numtc;
1610         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1611         /* Number of queues per enabled TC */
1612         /* In MFP case we can have a much lower count of MSIx
1613          * vectors available and so we need to lower the used
1614          * q count.
1615          */
1616         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1617                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1618         else
1619                 qcount = vsi->alloc_queue_pairs;
1620         num_tc_qps = qcount / numtc;
1621         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1622
1623         /* Setup queue offset/count for all TCs for given VSI */
1624         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1625                 /* See if the given TC is enabled for the given VSI */
1626                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1627                         /* TC is enabled */
1628                         int pow, num_qps;
1629
1630                         switch (vsi->type) {
1631                         case I40E_VSI_MAIN:
1632                                 qcount = min_t(int, pf->alloc_rss_size,
1633                                                num_tc_qps);
1634                                 break;
1635 #ifdef I40E_FCOE
1636                         case I40E_VSI_FCOE:
1637                                 qcount = num_tc_qps;
1638                                 break;
1639 #endif
1640                         case I40E_VSI_FDIR:
1641                         case I40E_VSI_SRIOV:
1642                         case I40E_VSI_VMDQ2:
1643                         default:
1644                                 qcount = num_tc_qps;
1645                                 WARN_ON(i != 0);
1646                                 break;
1647                         }
1648                         vsi->tc_config.tc_info[i].qoffset = offset;
1649                         vsi->tc_config.tc_info[i].qcount = qcount;
1650
1651                         /* find the next higher power-of-2 of num queue pairs */
1652                         num_qps = qcount;
1653                         pow = 0;
1654                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1655                                 pow++;
1656                                 num_qps >>= 1;
1657                         }
1658
1659                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1660                         qmap =
1661                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1662                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1663
1664                         offset += qcount;
1665                 } else {
1666                         /* TC is not enabled so set the offset to
1667                          * default queue and allocate one queue
1668                          * for the given TC.
1669                          */
1670                         vsi->tc_config.tc_info[i].qoffset = 0;
1671                         vsi->tc_config.tc_info[i].qcount = 1;
1672                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1673
1674                         qmap = 0;
1675                 }
1676                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1677         }
1678
1679         /* Set actual Tx/Rx queue pairs */
1680         vsi->num_queue_pairs = offset;
1681         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1682                 if (vsi->req_queue_pairs > 0)
1683                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1684                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1685                         vsi->num_queue_pairs = pf->num_lan_msix;
1686         }
1687
1688         /* Scheduler section valid can only be set for ADD VSI */
1689         if (is_add) {
1690                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1691
1692                 ctxt->info.up_enable_bits = enabled_tc;
1693         }
1694         if (vsi->type == I40E_VSI_SRIOV) {
1695                 ctxt->info.mapping_flags |=
1696                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1697                 for (i = 0; i < vsi->num_queue_pairs; i++)
1698                         ctxt->info.queue_mapping[i] =
1699                                                cpu_to_le16(vsi->base_queue + i);
1700         } else {
1701                 ctxt->info.mapping_flags |=
1702                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1703                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1704         }
1705         ctxt->info.valid_sections |= cpu_to_le16(sections);
1706 }
1707
1708 /**
1709  * i40e_set_rx_mode - NDO callback to set the netdev filters
1710  * @netdev: network interface device structure
1711  **/
1712 #ifdef I40E_FCOE
1713 void i40e_set_rx_mode(struct net_device *netdev)
1714 #else
1715 static void i40e_set_rx_mode(struct net_device *netdev)
1716 #endif
1717 {
1718         struct i40e_netdev_priv *np = netdev_priv(netdev);
1719         struct i40e_mac_filter *f, *ftmp;
1720         struct i40e_vsi *vsi = np->vsi;
1721         struct netdev_hw_addr *uca;
1722         struct netdev_hw_addr *mca;
1723         struct netdev_hw_addr *ha;
1724
1725         spin_lock_bh(&vsi->mac_filter_list_lock);
1726
1727         /* add addr if not already in the filter list */
1728         netdev_for_each_uc_addr(uca, netdev) {
1729                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1730                         if (i40e_is_vsi_in_vlan(vsi))
1731                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1732                                                      false, true);
1733                         else
1734                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1735                                                 false, true);
1736                 }
1737         }
1738
1739         netdev_for_each_mc_addr(mca, netdev) {
1740                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1741                         if (i40e_is_vsi_in_vlan(vsi))
1742                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1743                                                      false, true);
1744                         else
1745                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1746                                                 false, true);
1747                 }
1748         }
1749
1750         /* remove filter if not in netdev list */
1751         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1752
1753                 if (!f->is_netdev)
1754                         continue;
1755
1756                 netdev_for_each_mc_addr(mca, netdev)
1757                         if (ether_addr_equal(mca->addr, f->macaddr))
1758                                 goto bottom_of_search_loop;
1759
1760                 netdev_for_each_uc_addr(uca, netdev)
1761                         if (ether_addr_equal(uca->addr, f->macaddr))
1762                                 goto bottom_of_search_loop;
1763
1764                 for_each_dev_addr(netdev, ha)
1765                         if (ether_addr_equal(ha->addr, f->macaddr))
1766                                 goto bottom_of_search_loop;
1767
1768                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1769                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1770
1771 bottom_of_search_loop:
1772                 continue;
1773         }
1774         spin_unlock_bh(&vsi->mac_filter_list_lock);
1775
1776         /* check for other flag changes */
1777         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1778                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1779                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1780         }
1781 }
1782
1783 /**
1784  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1785  * @src: source MAC filter entry to be clones
1786  *
1787  * Returns the pointer to newly cloned MAC filter entry or NULL
1788  * in case of error
1789  **/
1790 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1791                                         struct i40e_mac_filter *src)
1792 {
1793         struct i40e_mac_filter *f;
1794
1795         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1796         if (!f)
1797                 return NULL;
1798         *f = *src;
1799
1800         INIT_LIST_HEAD(&f->list);
1801
1802         return f;
1803 }
1804
1805 /**
1806  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1807  * @vsi: pointer to vsi struct
1808  * @from: Pointer to list which contains MAC filter entries - changes to
1809  *        those entries needs to be undone.
1810  *
1811  * MAC filter entries from list were slated to be removed from device.
1812  **/
1813 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1814                                          struct list_head *from)
1815 {
1816         struct i40e_mac_filter *f, *ftmp;
1817
1818         list_for_each_entry_safe(f, ftmp, from, list) {
1819                 f->changed = true;
1820                 /* Move the element back into MAC filter list*/
1821                 list_move_tail(&f->list, &vsi->mac_filter_list);
1822         }
1823 }
1824
1825 /**
1826  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1827  * @vsi: pointer to vsi struct
1828  *
1829  * MAC filter entries from list were slated to be added from device.
1830  **/
1831 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1832 {
1833         struct i40e_mac_filter *f, *ftmp;
1834
1835         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1836                 if (!f->changed && f->counter)
1837                         f->changed = true;
1838         }
1839 }
1840
1841 /**
1842  * i40e_cleanup_add_list - Deletes the element from add list and release
1843  *                      memory
1844  * @add_list: Pointer to list which contains MAC filter entries
1845  **/
1846 static void i40e_cleanup_add_list(struct list_head *add_list)
1847 {
1848         struct i40e_mac_filter *f, *ftmp;
1849
1850         list_for_each_entry_safe(f, ftmp, add_list, list) {
1851                 list_del(&f->list);
1852                 kfree(f);
1853         }
1854 }
1855
1856 /**
1857  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1858  * @vsi: ptr to the VSI
1859  *
1860  * Push any outstanding VSI filter changes through the AdminQ.
1861  *
1862  * Returns 0 or error value
1863  **/
1864 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1865 {
1866         struct list_head tmp_del_list, tmp_add_list;
1867         struct i40e_mac_filter *f, *ftmp, *fclone;
1868         bool promisc_forced_on = false;
1869         bool add_happened = false;
1870         int filter_list_len = 0;
1871         u32 changed_flags = 0;
1872         i40e_status aq_ret = 0;
1873         bool err_cond = false;
1874         int retval = 0;
1875         struct i40e_pf *pf;
1876         int num_add = 0;
1877         int num_del = 0;
1878         int aq_err = 0;
1879         u16 cmd_flags;
1880
1881         /* empty array typed pointers, kcalloc later */
1882         struct i40e_aqc_add_macvlan_element_data *add_list;
1883         struct i40e_aqc_remove_macvlan_element_data *del_list;
1884
1885         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1886                 usleep_range(1000, 2000);
1887         pf = vsi->back;
1888
1889         if (vsi->netdev) {
1890                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1891                 vsi->current_netdev_flags = vsi->netdev->flags;
1892         }
1893
1894         INIT_LIST_HEAD(&tmp_del_list);
1895         INIT_LIST_HEAD(&tmp_add_list);
1896
1897         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1898                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1899
1900                 spin_lock_bh(&vsi->mac_filter_list_lock);
1901                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1902                         if (!f->changed)
1903                                 continue;
1904
1905                         if (f->counter != 0)
1906                                 continue;
1907                         f->changed = false;
1908
1909                         /* Move the element into temporary del_list */
1910                         list_move_tail(&f->list, &tmp_del_list);
1911                 }
1912
1913                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1914                         if (!f->changed)
1915                                 continue;
1916
1917                         if (f->counter == 0)
1918                                 continue;
1919                         f->changed = false;
1920
1921                         /* Clone MAC filter entry and add into temporary list */
1922                         fclone = i40e_mac_filter_entry_clone(f);
1923                         if (!fclone) {
1924                                 err_cond = true;
1925                                 break;
1926                         }
1927                         list_add_tail(&fclone->list, &tmp_add_list);
1928                 }
1929
1930                 /* if failed to clone MAC filter entry - undo */
1931                 if (err_cond) {
1932                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1933                         i40e_undo_add_filter_entries(vsi);
1934                 }
1935                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1936
1937                 if (err_cond) {
1938                         i40e_cleanup_add_list(&tmp_add_list);
1939                         retval = -ENOMEM;
1940                         goto out;
1941                 }
1942         }
1943
1944         /* Now process 'del_list' outside the lock */
1945         if (!list_empty(&tmp_del_list)) {
1946                 filter_list_len = pf->hw.aq.asq_buf_size /
1947                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1948                 del_list = kcalloc(filter_list_len,
1949                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1950                             GFP_KERNEL);
1951                 if (!del_list) {
1952                         i40e_cleanup_add_list(&tmp_add_list);
1953
1954                         /* Undo VSI's MAC filter entry element updates */
1955                         spin_lock_bh(&vsi->mac_filter_list_lock);
1956                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1957                         i40e_undo_add_filter_entries(vsi);
1958                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1959                         retval = -ENOMEM;
1960                         goto out;
1961                 }
1962
1963                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1964                         cmd_flags = 0;
1965
1966                         /* add to delete list */
1967                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1968                         del_list[num_del].vlan_tag =
1969                                 cpu_to_le16((u16)(f->vlan ==
1970                                             I40E_VLAN_ANY ? 0 : f->vlan));
1971
1972                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1973                         del_list[num_del].flags = cmd_flags;
1974                         num_del++;
1975
1976                         /* flush a full buffer */
1977                         if (num_del == filter_list_len) {
1978                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1979                                                                 vsi->seid,
1980                                                                 del_list,
1981                                                                 num_del,
1982                                                                 NULL);
1983                                 aq_err = pf->hw.aq.asq_last_status;
1984                                 num_del = 0;
1985                                 memset(del_list, 0, sizeof(*del_list));
1986
1987                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1988                                         retval = -EIO;
1989                                         dev_err(&pf->pdev->dev,
1990                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1991                                                 i40e_stat_str(&pf->hw, aq_ret),
1992                                                 i40e_aq_str(&pf->hw, aq_err));
1993                                 }
1994                         }
1995                         /* Release memory for MAC filter entries which were
1996                          * synced up with HW.
1997                          */
1998                         list_del(&f->list);
1999                         kfree(f);
2000                 }
2001
2002                 if (num_del) {
2003                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
2004                                                         del_list, num_del,
2005                                                         NULL);
2006                         aq_err = pf->hw.aq.asq_last_status;
2007                         num_del = 0;
2008
2009                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
2010                                 dev_info(&pf->pdev->dev,
2011                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2012                                          i40e_stat_str(&pf->hw, aq_ret),
2013                                          i40e_aq_str(&pf->hw, aq_err));
2014                 }
2015
2016                 kfree(del_list);
2017                 del_list = NULL;
2018         }
2019
2020         if (!list_empty(&tmp_add_list)) {
2021
2022                 /* do all the adds now */
2023                 filter_list_len = pf->hw.aq.asq_buf_size /
2024                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2025                 add_list = kcalloc(filter_list_len,
2026                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2027                                GFP_KERNEL);
2028                 if (!add_list) {
2029                         /* Purge element from temporary lists */
2030                         i40e_cleanup_add_list(&tmp_add_list);
2031
2032                         /* Undo add filter entries from VSI MAC filter list */
2033                         spin_lock_bh(&vsi->mac_filter_list_lock);
2034                         i40e_undo_add_filter_entries(vsi);
2035                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2036                         retval = -ENOMEM;
2037                         goto out;
2038                 }
2039
2040                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2041
2042                         add_happened = true;
2043                         cmd_flags = 0;
2044
2045                         /* add to add array */
2046                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2047                         add_list[num_add].vlan_tag =
2048                                 cpu_to_le16(
2049                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2050                         add_list[num_add].queue_number = 0;
2051
2052                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2053                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2054                         num_add++;
2055
2056                         /* flush a full buffer */
2057                         if (num_add == filter_list_len) {
2058                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2059                                                              add_list, num_add,
2060                                                              NULL);
2061                                 aq_err = pf->hw.aq.asq_last_status;
2062                                 num_add = 0;
2063
2064                                 if (aq_ret)
2065                                         break;
2066                                 memset(add_list, 0, sizeof(*add_list));
2067                         }
2068                         /* Entries from tmp_add_list were cloned from MAC
2069                          * filter list, hence clean those cloned entries
2070                          */
2071                         list_del(&f->list);
2072                         kfree(f);
2073                 }
2074
2075                 if (num_add) {
2076                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2077                                                      add_list, num_add, NULL);
2078                         aq_err = pf->hw.aq.asq_last_status;
2079                         num_add = 0;
2080                 }
2081                 kfree(add_list);
2082                 add_list = NULL;
2083
2084                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2085                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2086                         dev_info(&pf->pdev->dev,
2087                                  "add filter failed, err %s aq_err %s\n",
2088                                  i40e_stat_str(&pf->hw, aq_ret),
2089                                  i40e_aq_str(&pf->hw, aq_err));
2090                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2091                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2092                                       &vsi->state)) {
2093                                 promisc_forced_on = true;
2094                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2095                                         &vsi->state);
2096                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2097                         }
2098                 }
2099         }
2100
2101         /* check for changes in promiscuous modes */
2102         if (changed_flags & IFF_ALLMULTI) {
2103                 bool cur_multipromisc;
2104
2105                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2106                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2107                                                                vsi->seid,
2108                                                                cur_multipromisc,
2109                                                                NULL);
2110                 if (aq_ret) {
2111                         retval = i40e_aq_rc_to_posix(aq_ret,
2112                                                      pf->hw.aq.asq_last_status);
2113                         dev_info(&pf->pdev->dev,
2114                                  "set multi promisc failed, err %s aq_err %s\n",
2115                                  i40e_stat_str(&pf->hw, aq_ret),
2116                                  i40e_aq_str(&pf->hw,
2117                                              pf->hw.aq.asq_last_status));
2118                 }
2119         }
2120         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2121                 bool cur_promisc;
2122
2123                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2124                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2125                                         &vsi->state));
2126                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2127                         /* set defport ON for Main VSI instead of true promisc
2128                          * this way we will get all unicast/multicast and VLAN
2129                          * promisc behavior but will not get VF or VMDq traffic
2130                          * replicated on the Main VSI.
2131                          */
2132                         if (pf->cur_promisc != cur_promisc) {
2133                                 pf->cur_promisc = cur_promisc;
2134                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2135                         }
2136                 } else {
2137                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2138                                                           &vsi->back->hw,
2139                                                           vsi->seid,
2140                                                           cur_promisc, NULL);
2141                         if (aq_ret) {
2142                                 retval =
2143                                 i40e_aq_rc_to_posix(aq_ret,
2144                                                     pf->hw.aq.asq_last_status);
2145                                 dev_info(&pf->pdev->dev,
2146                                          "set unicast promisc failed, err %d, aq_err %d\n",
2147                                          aq_ret, pf->hw.aq.asq_last_status);
2148                         }
2149                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2150                                                           &vsi->back->hw,
2151                                                           vsi->seid,
2152                                                           cur_promisc, NULL);
2153                         if (aq_ret) {
2154                                 retval =
2155                                 i40e_aq_rc_to_posix(aq_ret,
2156                                                     pf->hw.aq.asq_last_status);
2157                                 dev_info(&pf->pdev->dev,
2158                                          "set multicast promisc failed, err %d, aq_err %d\n",
2159                                          aq_ret, pf->hw.aq.asq_last_status);
2160                         }
2161                 }
2162                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2163                                                    vsi->seid,
2164                                                    cur_promisc, NULL);
2165                 if (aq_ret) {
2166                         retval = i40e_aq_rc_to_posix(aq_ret,
2167                                                      pf->hw.aq.asq_last_status);
2168                         dev_info(&pf->pdev->dev,
2169                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2170                                  i40e_stat_str(&pf->hw, aq_ret),
2171                                  i40e_aq_str(&pf->hw,
2172                                              pf->hw.aq.asq_last_status));
2173                 }
2174         }
2175 out:
2176         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2177         return retval;
2178 }
2179
2180 /**
2181  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2182  * @pf: board private structure
2183  **/
2184 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2185 {
2186         int v;
2187
2188         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2189                 return;
2190         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2191
2192         for (v = 0; v < pf->num_alloc_vsi; v++) {
2193                 if (pf->vsi[v] &&
2194                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2195                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2196
2197                         if (ret) {
2198                                 /* come back and try again later */
2199                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2200                                 break;
2201                         }
2202                 }
2203         }
2204 }
2205
2206 /**
2207  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2208  * @netdev: network interface device structure
2209  * @new_mtu: new value for maximum frame size
2210  *
2211  * Returns 0 on success, negative on failure
2212  **/
2213 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2214 {
2215         struct i40e_netdev_priv *np = netdev_priv(netdev);
2216         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2217         struct i40e_vsi *vsi = np->vsi;
2218
2219         /* MTU < 68 is an error and causes problems on some kernels */
2220         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2221                 return -EINVAL;
2222
2223         netdev_info(netdev, "changing MTU from %d to %d\n",
2224                     netdev->mtu, new_mtu);
2225         netdev->mtu = new_mtu;
2226         if (netif_running(netdev))
2227                 i40e_vsi_reinit_locked(vsi);
2228
2229         return 0;
2230 }
2231
2232 /**
2233  * i40e_ioctl - Access the hwtstamp interface
2234  * @netdev: network interface device structure
2235  * @ifr: interface request data
2236  * @cmd: ioctl command
2237  **/
2238 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2239 {
2240         struct i40e_netdev_priv *np = netdev_priv(netdev);
2241         struct i40e_pf *pf = np->vsi->back;
2242
2243         switch (cmd) {
2244         case SIOCGHWTSTAMP:
2245                 return i40e_ptp_get_ts_config(pf, ifr);
2246         case SIOCSHWTSTAMP:
2247                 return i40e_ptp_set_ts_config(pf, ifr);
2248         default:
2249                 return -EOPNOTSUPP;
2250         }
2251 }
2252
2253 /**
2254  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2255  * @vsi: the vsi being adjusted
2256  **/
2257 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2258 {
2259         struct i40e_vsi_context ctxt;
2260         i40e_status ret;
2261
2262         if ((vsi->info.valid_sections &
2263              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2264             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2265                 return;  /* already enabled */
2266
2267         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2268         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2269                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2270
2271         ctxt.seid = vsi->seid;
2272         ctxt.info = vsi->info;
2273         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2274         if (ret) {
2275                 dev_info(&vsi->back->pdev->dev,
2276                          "update vlan stripping failed, err %s aq_err %s\n",
2277                          i40e_stat_str(&vsi->back->hw, ret),
2278                          i40e_aq_str(&vsi->back->hw,
2279                                      vsi->back->hw.aq.asq_last_status));
2280         }
2281 }
2282
2283 /**
2284  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2285  * @vsi: the vsi being adjusted
2286  **/
2287 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2288 {
2289         struct i40e_vsi_context ctxt;
2290         i40e_status ret;
2291
2292         if ((vsi->info.valid_sections &
2293              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2294             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2295              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2296                 return;  /* already disabled */
2297
2298         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2299         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2300                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2301
2302         ctxt.seid = vsi->seid;
2303         ctxt.info = vsi->info;
2304         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2305         if (ret) {
2306                 dev_info(&vsi->back->pdev->dev,
2307                          "update vlan stripping failed, err %s aq_err %s\n",
2308                          i40e_stat_str(&vsi->back->hw, ret),
2309                          i40e_aq_str(&vsi->back->hw,
2310                                      vsi->back->hw.aq.asq_last_status));
2311         }
2312 }
2313
2314 /**
2315  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2316  * @netdev: network interface to be adjusted
2317  * @features: netdev features to test if VLAN offload is enabled or not
2318  **/
2319 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2320 {
2321         struct i40e_netdev_priv *np = netdev_priv(netdev);
2322         struct i40e_vsi *vsi = np->vsi;
2323
2324         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2325                 i40e_vlan_stripping_enable(vsi);
2326         else
2327                 i40e_vlan_stripping_disable(vsi);
2328 }
2329
2330 /**
2331  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2332  * @vsi: the vsi being configured
2333  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2334  **/
2335 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2336 {
2337         struct i40e_mac_filter *f, *add_f;
2338         bool is_netdev, is_vf;
2339
2340         is_vf = (vsi->type == I40E_VSI_SRIOV);
2341         is_netdev = !!(vsi->netdev);
2342
2343         /* Locked once because all functions invoked below iterates list*/
2344         spin_lock_bh(&vsi->mac_filter_list_lock);
2345
2346         if (is_netdev) {
2347                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2348                                         is_vf, is_netdev);
2349                 if (!add_f) {
2350                         dev_info(&vsi->back->pdev->dev,
2351                                  "Could not add vlan filter %d for %pM\n",
2352                                  vid, vsi->netdev->dev_addr);
2353                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2354                         return -ENOMEM;
2355                 }
2356         }
2357
2358         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2359                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2360                 if (!add_f) {
2361                         dev_info(&vsi->back->pdev->dev,
2362                                  "Could not add vlan filter %d for %pM\n",
2363                                  vid, f->macaddr);
2364                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2365                         return -ENOMEM;
2366                 }
2367         }
2368
2369         /* Now if we add a vlan tag, make sure to check if it is the first
2370          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2371          * with 0, so we now accept untagged and specified tagged traffic
2372          * (and not any taged and untagged)
2373          */
2374         if (vid > 0) {
2375                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2376                                                   I40E_VLAN_ANY,
2377                                                   is_vf, is_netdev)) {
2378                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2379                                         I40E_VLAN_ANY, is_vf, is_netdev);
2380                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2381                                                 is_vf, is_netdev);
2382                         if (!add_f) {
2383                                 dev_info(&vsi->back->pdev->dev,
2384                                          "Could not add filter 0 for %pM\n",
2385                                          vsi->netdev->dev_addr);
2386                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2387                                 return -ENOMEM;
2388                         }
2389                 }
2390         }
2391
2392         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2393         if (vid > 0 && !vsi->info.pvid) {
2394                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2395                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2396                                               is_vf, is_netdev))
2397                                 continue;
2398                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2399                                         is_vf, is_netdev);
2400                         add_f = i40e_add_filter(vsi, f->macaddr,
2401                                                 0, is_vf, is_netdev);
2402                         if (!add_f) {
2403                                 dev_info(&vsi->back->pdev->dev,
2404                                          "Could not add filter 0 for %pM\n",
2405                                         f->macaddr);
2406                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2407                                 return -ENOMEM;
2408                         }
2409                 }
2410         }
2411
2412         spin_unlock_bh(&vsi->mac_filter_list_lock);
2413
2414         /* schedule our worker thread which will take care of
2415          * applying the new filter changes
2416          */
2417         i40e_service_event_schedule(vsi->back);
2418         return 0;
2419 }
2420
2421 /**
2422  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2423  * @vsi: the vsi being configured
2424  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2425  *
2426  * Return: 0 on success or negative otherwise
2427  **/
2428 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2429 {
2430         struct net_device *netdev = vsi->netdev;
2431         struct i40e_mac_filter *f, *add_f;
2432         bool is_vf, is_netdev;
2433         int filter_count = 0;
2434
2435         is_vf = (vsi->type == I40E_VSI_SRIOV);
2436         is_netdev = !!(netdev);
2437
2438         /* Locked once because all functions invoked below iterates list */
2439         spin_lock_bh(&vsi->mac_filter_list_lock);
2440
2441         if (is_netdev)
2442                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2443
2444         list_for_each_entry(f, &vsi->mac_filter_list, list)
2445                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2446
2447         /* go through all the filters for this VSI and if there is only
2448          * vid == 0 it means there are no other filters, so vid 0 must
2449          * be replaced with -1. This signifies that we should from now
2450          * on accept any traffic (with any tag present, or untagged)
2451          */
2452         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2453                 if (is_netdev) {
2454                         if (f->vlan &&
2455                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2456                                 filter_count++;
2457                 }
2458
2459                 if (f->vlan)
2460                         filter_count++;
2461         }
2462
2463         if (!filter_count && is_netdev) {
2464                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2465                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2466                                     is_vf, is_netdev);
2467                 if (!f) {
2468                         dev_info(&vsi->back->pdev->dev,
2469                                  "Could not add filter %d for %pM\n",
2470                                  I40E_VLAN_ANY, netdev->dev_addr);
2471                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2472                         return -ENOMEM;
2473                 }
2474         }
2475
2476         if (!filter_count) {
2477                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2478                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2479                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2480                                                 is_vf, is_netdev);
2481                         if (!add_f) {
2482                                 dev_info(&vsi->back->pdev->dev,
2483                                          "Could not add filter %d for %pM\n",
2484                                          I40E_VLAN_ANY, f->macaddr);
2485                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2486                                 return -ENOMEM;
2487                         }
2488                 }
2489         }
2490
2491         spin_unlock_bh(&vsi->mac_filter_list_lock);
2492
2493         /* schedule our worker thread which will take care of
2494          * applying the new filter changes
2495          */
2496         i40e_service_event_schedule(vsi->back);
2497         return 0;
2498 }
2499
2500 /**
2501  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2502  * @netdev: network interface to be adjusted
2503  * @vid: vlan id to be added
2504  *
2505  * net_device_ops implementation for adding vlan ids
2506  **/
2507 #ifdef I40E_FCOE
2508 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2509                          __always_unused __be16 proto, u16 vid)
2510 #else
2511 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2512                                 __always_unused __be16 proto, u16 vid)
2513 #endif
2514 {
2515         struct i40e_netdev_priv *np = netdev_priv(netdev);
2516         struct i40e_vsi *vsi = np->vsi;
2517         int ret = 0;
2518
2519         if (vid > 4095)
2520                 return -EINVAL;
2521
2522         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2523
2524         /* If the network stack called us with vid = 0 then
2525          * it is asking to receive priority tagged packets with
2526          * vlan id 0.  Our HW receives them by default when configured
2527          * to receive untagged packets so there is no need to add an
2528          * extra filter for vlan 0 tagged packets.
2529          */
2530         if (vid)
2531                 ret = i40e_vsi_add_vlan(vsi, vid);
2532
2533         if (!ret && (vid < VLAN_N_VID))
2534                 set_bit(vid, vsi->active_vlans);
2535
2536         return ret;
2537 }
2538
2539 /**
2540  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2541  * @netdev: network interface to be adjusted
2542  * @vid: vlan id to be removed
2543  *
2544  * net_device_ops implementation for removing vlan ids
2545  **/
2546 #ifdef I40E_FCOE
2547 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2548                           __always_unused __be16 proto, u16 vid)
2549 #else
2550 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2551                                  __always_unused __be16 proto, u16 vid)
2552 #endif
2553 {
2554         struct i40e_netdev_priv *np = netdev_priv(netdev);
2555         struct i40e_vsi *vsi = np->vsi;
2556
2557         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2558
2559         /* return code is ignored as there is nothing a user
2560          * can do about failure to remove and a log message was
2561          * already printed from the other function
2562          */
2563         i40e_vsi_kill_vlan(vsi, vid);
2564
2565         clear_bit(vid, vsi->active_vlans);
2566
2567         return 0;
2568 }
2569
2570 /**
2571  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2572  * @vsi: the vsi being brought back up
2573  **/
2574 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2575 {
2576         u16 vid;
2577
2578         if (!vsi->netdev)
2579                 return;
2580
2581         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2582
2583         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2584                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2585                                      vid);
2586 }
2587
2588 /**
2589  * i40e_vsi_add_pvid - Add pvid for the VSI
2590  * @vsi: the vsi being adjusted
2591  * @vid: the vlan id to set as a PVID
2592  **/
2593 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2594 {
2595         struct i40e_vsi_context ctxt;
2596         i40e_status ret;
2597
2598         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2599         vsi->info.pvid = cpu_to_le16(vid);
2600         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2601                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2602                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2603
2604         ctxt.seid = vsi->seid;
2605         ctxt.info = vsi->info;
2606         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2607         if (ret) {
2608                 dev_info(&vsi->back->pdev->dev,
2609                          "add pvid failed, err %s aq_err %s\n",
2610                          i40e_stat_str(&vsi->back->hw, ret),
2611                          i40e_aq_str(&vsi->back->hw,
2612                                      vsi->back->hw.aq.asq_last_status));
2613                 return -ENOENT;
2614         }
2615
2616         return 0;
2617 }
2618
2619 /**
2620  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2621  * @vsi: the vsi being adjusted
2622  *
2623  * Just use the vlan_rx_register() service to put it back to normal
2624  **/
2625 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2626 {
2627         i40e_vlan_stripping_disable(vsi);
2628
2629         vsi->info.pvid = 0;
2630 }
2631
2632 /**
2633  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2634  * @vsi: ptr to the VSI
2635  *
2636  * If this function returns with an error, then it's possible one or
2637  * more of the rings is populated (while the rest are not).  It is the
2638  * callers duty to clean those orphaned rings.
2639  *
2640  * Return 0 on success, negative on failure
2641  **/
2642 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2643 {
2644         int i, err = 0;
2645
2646         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2647                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2648
2649         return err;
2650 }
2651
2652 /**
2653  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2654  * @vsi: ptr to the VSI
2655  *
2656  * Free VSI's transmit software resources
2657  **/
2658 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2659 {
2660         int i;
2661
2662         if (!vsi->tx_rings)
2663                 return;
2664
2665         for (i = 0; i < vsi->num_queue_pairs; i++)
2666                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2667                         i40e_free_tx_resources(vsi->tx_rings[i]);
2668 }
2669
2670 /**
2671  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2672  * @vsi: ptr to the VSI
2673  *
2674  * If this function returns with an error, then it's possible one or
2675  * more of the rings is populated (while the rest are not).  It is the
2676  * callers duty to clean those orphaned rings.
2677  *
2678  * Return 0 on success, negative on failure
2679  **/
2680 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2681 {
2682         int i, err = 0;
2683
2684         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2685                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2686 #ifdef I40E_FCOE
2687         i40e_fcoe_setup_ddp_resources(vsi);
2688 #endif
2689         return err;
2690 }
2691
2692 /**
2693  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2694  * @vsi: ptr to the VSI
2695  *
2696  * Free all receive software resources
2697  **/
2698 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2699 {
2700         int i;
2701
2702         if (!vsi->rx_rings)
2703                 return;
2704
2705         for (i = 0; i < vsi->num_queue_pairs; i++)
2706                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2707                         i40e_free_rx_resources(vsi->rx_rings[i]);
2708 #ifdef I40E_FCOE
2709         i40e_fcoe_free_ddp_resources(vsi);
2710 #endif
2711 }
2712
2713 /**
2714  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2715  * @ring: The Tx ring to configure
2716  *
2717  * This enables/disables XPS for a given Tx descriptor ring
2718  * based on the TCs enabled for the VSI that ring belongs to.
2719  **/
2720 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2721 {
2722         struct i40e_vsi *vsi = ring->vsi;
2723         cpumask_var_t mask;
2724
2725         if (!ring->q_vector || !ring->netdev)
2726                 return;
2727
2728         /* Single TC mode enable XPS */
2729         if (vsi->tc_config.numtc <= 1) {
2730                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2731                         netif_set_xps_queue(ring->netdev,
2732                                             &ring->q_vector->affinity_mask,
2733                                             ring->queue_index);
2734         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2735                 /* Disable XPS to allow selection based on TC */
2736                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2737                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2738                 free_cpumask_var(mask);
2739         }
2740
2741         /* schedule our worker thread which will take care of
2742          * applying the new filter changes
2743          */
2744         i40e_service_event_schedule(vsi->back);
2745 }
2746
2747 /**
2748  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2749  * @ring: The Tx ring to configure
2750  *
2751  * Configure the Tx descriptor ring in the HMC context.
2752  **/
2753 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2754 {
2755         struct i40e_vsi *vsi = ring->vsi;
2756         u16 pf_q = vsi->base_queue + ring->queue_index;
2757         struct i40e_hw *hw = &vsi->back->hw;
2758         struct i40e_hmc_obj_txq tx_ctx;
2759         i40e_status err = 0;
2760         u32 qtx_ctl = 0;
2761
2762         /* some ATR related tx ring init */
2763         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2764                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2765                 ring->atr_count = 0;
2766         } else {
2767                 ring->atr_sample_rate = 0;
2768         }
2769
2770         /* configure XPS */
2771         i40e_config_xps_tx_ring(ring);
2772
2773         /* clear the context structure first */
2774         memset(&tx_ctx, 0, sizeof(tx_ctx));
2775
2776         tx_ctx.new_context = 1;
2777         tx_ctx.base = (ring->dma / 128);
2778         tx_ctx.qlen = ring->count;
2779         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2780                                                I40E_FLAG_FD_ATR_ENABLED));
2781 #ifdef I40E_FCOE
2782         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2783 #endif
2784         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2785         /* FDIR VSI tx ring can still use RS bit and writebacks */
2786         if (vsi->type != I40E_VSI_FDIR)
2787                 tx_ctx.head_wb_ena = 1;
2788         tx_ctx.head_wb_addr = ring->dma +
2789                               (ring->count * sizeof(struct i40e_tx_desc));
2790
2791         /* As part of VSI creation/update, FW allocates certain
2792          * Tx arbitration queue sets for each TC enabled for
2793          * the VSI. The FW returns the handles to these queue
2794          * sets as part of the response buffer to Add VSI,
2795          * Update VSI, etc. AQ commands. It is expected that
2796          * these queue set handles be associated with the Tx
2797          * queues by the driver as part of the TX queue context
2798          * initialization. This has to be done regardless of
2799          * DCB as by default everything is mapped to TC0.
2800          */
2801         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2802         tx_ctx.rdylist_act = 0;
2803
2804         /* clear the context in the HMC */
2805         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2806         if (err) {
2807                 dev_info(&vsi->back->pdev->dev,
2808                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2809                          ring->queue_index, pf_q, err);
2810                 return -ENOMEM;
2811         }
2812
2813         /* set the context in the HMC */
2814         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2815         if (err) {
2816                 dev_info(&vsi->back->pdev->dev,
2817                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2818                          ring->queue_index, pf_q, err);
2819                 return -ENOMEM;
2820         }
2821
2822         /* Now associate this queue with this PCI function */
2823         if (vsi->type == I40E_VSI_VMDQ2) {
2824                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2825                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2826                            I40E_QTX_CTL_VFVM_INDX_MASK;
2827         } else {
2828                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2829         }
2830
2831         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2832                     I40E_QTX_CTL_PF_INDX_MASK);
2833         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2834         i40e_flush(hw);
2835
2836         /* cache tail off for easier writes later */
2837         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2838
2839         return 0;
2840 }
2841
2842 /**
2843  * i40e_configure_rx_ring - Configure a receive ring context
2844  * @ring: The Rx ring to configure
2845  *
2846  * Configure the Rx descriptor ring in the HMC context.
2847  **/
2848 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2849 {
2850         struct i40e_vsi *vsi = ring->vsi;
2851         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2852         u16 pf_q = vsi->base_queue + ring->queue_index;
2853         struct i40e_hw *hw = &vsi->back->hw;
2854         struct i40e_hmc_obj_rxq rx_ctx;
2855         i40e_status err = 0;
2856
2857         ring->state = 0;
2858
2859         /* clear the context structure first */
2860         memset(&rx_ctx, 0, sizeof(rx_ctx));
2861
2862         ring->rx_buf_len = vsi->rx_buf_len;
2863         ring->rx_hdr_len = vsi->rx_hdr_len;
2864
2865         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2866         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2867
2868         rx_ctx.base = (ring->dma / 128);
2869         rx_ctx.qlen = ring->count;
2870
2871         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2872                 set_ring_16byte_desc_enabled(ring);
2873                 rx_ctx.dsize = 0;
2874         } else {
2875                 rx_ctx.dsize = 1;
2876         }
2877
2878         rx_ctx.dtype = vsi->dtype;
2879         if (vsi->dtype) {
2880                 set_ring_ps_enabled(ring);
2881                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2882                                   I40E_RX_SPLIT_IP      |
2883                                   I40E_RX_SPLIT_TCP_UDP |
2884                                   I40E_RX_SPLIT_SCTP;
2885         } else {
2886                 rx_ctx.hsplit_0 = 0;
2887         }
2888
2889         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2890                                   (chain_len * ring->rx_buf_len));
2891         if (hw->revision_id == 0)
2892                 rx_ctx.lrxqthresh = 0;
2893         else
2894                 rx_ctx.lrxqthresh = 2;
2895         rx_ctx.crcstrip = 1;
2896         rx_ctx.l2tsel = 1;
2897         /* this controls whether VLAN is stripped from inner headers */
2898         rx_ctx.showiv = 0;
2899 #ifdef I40E_FCOE
2900         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2901 #endif
2902         /* set the prefena field to 1 because the manual says to */
2903         rx_ctx.prefena = 1;
2904
2905         /* clear the context in the HMC */
2906         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2907         if (err) {
2908                 dev_info(&vsi->back->pdev->dev,
2909                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2910                          ring->queue_index, pf_q, err);
2911                 return -ENOMEM;
2912         }
2913
2914         /* set the context in the HMC */
2915         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2916         if (err) {
2917                 dev_info(&vsi->back->pdev->dev,
2918                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2919                          ring->queue_index, pf_q, err);
2920                 return -ENOMEM;
2921         }
2922
2923         /* cache tail for quicker writes, and clear the reg before use */
2924         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2925         writel(0, ring->tail);
2926
2927         if (ring_is_ps_enabled(ring)) {
2928                 i40e_alloc_rx_headers(ring);
2929                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2930         } else {
2931                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2932         }
2933
2934         return 0;
2935 }
2936
2937 /**
2938  * i40e_vsi_configure_tx - Configure the VSI for Tx
2939  * @vsi: VSI structure describing this set of rings and resources
2940  *
2941  * Configure the Tx VSI for operation.
2942  **/
2943 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2944 {
2945         int err = 0;
2946         u16 i;
2947
2948         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2949                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2950
2951         return err;
2952 }
2953
2954 /**
2955  * i40e_vsi_configure_rx - Configure the VSI for Rx
2956  * @vsi: the VSI being configured
2957  *
2958  * Configure the Rx VSI for operation.
2959  **/
2960 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2961 {
2962         int err = 0;
2963         u16 i;
2964
2965         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2966                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2967                                + ETH_FCS_LEN + VLAN_HLEN;
2968         else
2969                 vsi->max_frame = I40E_RXBUFFER_2048;
2970
2971         /* figure out correct receive buffer length */
2972         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2973                                     I40E_FLAG_RX_PS_ENABLED)) {
2974         case I40E_FLAG_RX_1BUF_ENABLED:
2975                 vsi->rx_hdr_len = 0;
2976                 vsi->rx_buf_len = vsi->max_frame;
2977                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2978                 break;
2979         case I40E_FLAG_RX_PS_ENABLED:
2980                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2981                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2982                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2983                 break;
2984         default:
2985                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2986                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2987                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2988                 break;
2989         }
2990
2991 #ifdef I40E_FCOE
2992         /* setup rx buffer for FCoE */
2993         if ((vsi->type == I40E_VSI_FCOE) &&
2994             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2995                 vsi->rx_hdr_len = 0;
2996                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2997                 vsi->max_frame = I40E_RXBUFFER_3072;
2998                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2999         }
3000
3001 #endif /* I40E_FCOE */
3002         /* round up for the chip's needs */
3003         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
3004                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
3005         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3006                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3007
3008         /* set up individual rings */
3009         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3010                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3011
3012         return err;
3013 }
3014
3015 /**
3016  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3017  * @vsi: ptr to the VSI
3018  **/
3019 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3020 {
3021         struct i40e_ring *tx_ring, *rx_ring;
3022         u16 qoffset, qcount;
3023         int i, n;
3024
3025         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3026                 /* Reset the TC information */
3027                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3028                         rx_ring = vsi->rx_rings[i];
3029                         tx_ring = vsi->tx_rings[i];
3030                         rx_ring->dcb_tc = 0;
3031                         tx_ring->dcb_tc = 0;
3032                 }
3033         }
3034
3035         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3036                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3037                         continue;
3038
3039                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3040                 qcount = vsi->tc_config.tc_info[n].qcount;
3041                 for (i = qoffset; i < (qoffset + qcount); i++) {
3042                         rx_ring = vsi->rx_rings[i];
3043                         tx_ring = vsi->tx_rings[i];
3044                         rx_ring->dcb_tc = n;
3045                         tx_ring->dcb_tc = n;
3046                 }
3047         }
3048 }
3049
3050 /**
3051  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3052  * @vsi: ptr to the VSI
3053  **/
3054 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3055 {
3056         if (vsi->netdev)
3057                 i40e_set_rx_mode(vsi->netdev);
3058 }
3059
3060 /**
3061  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3062  * @vsi: Pointer to the targeted VSI
3063  *
3064  * This function replays the hlist on the hw where all the SB Flow Director
3065  * filters were saved.
3066  **/
3067 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3068 {
3069         struct i40e_fdir_filter *filter;
3070         struct i40e_pf *pf = vsi->back;
3071         struct hlist_node *node;
3072
3073         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3074                 return;
3075
3076         hlist_for_each_entry_safe(filter, node,
3077                                   &pf->fdir_filter_list, fdir_node) {
3078                 i40e_add_del_fdir(vsi, filter, true);
3079         }
3080 }
3081
3082 /**
3083  * i40e_vsi_configure - Set up the VSI for action
3084  * @vsi: the VSI being configured
3085  **/
3086 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3087 {
3088         int err;
3089
3090         i40e_set_vsi_rx_mode(vsi);
3091         i40e_restore_vlan(vsi);
3092         i40e_vsi_config_dcb_rings(vsi);
3093         err = i40e_vsi_configure_tx(vsi);
3094         if (!err)
3095                 err = i40e_vsi_configure_rx(vsi);
3096
3097         return err;
3098 }
3099
3100 /**
3101  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3102  * @vsi: the VSI being configured
3103  **/
3104 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3105 {
3106         struct i40e_pf *pf = vsi->back;
3107         struct i40e_hw *hw = &pf->hw;
3108         u16 vector;
3109         int i, q;
3110         u32 qp;
3111
3112         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3113          * and PFINT_LNKLSTn registers, e.g.:
3114          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3115          */
3116         qp = vsi->base_queue;
3117         vector = vsi->base_vector;
3118         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3119                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3120
3121                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3122                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3123                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3124                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3125                      q_vector->rx.itr);
3126                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3127                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3128                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3129                      q_vector->tx.itr);
3130                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3131                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3132
3133                 /* Linked list for the queuepairs assigned to this vector */
3134                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3135                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3136                         u32 val;
3137
3138                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3139                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3140                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3141                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3142                               (I40E_QUEUE_TYPE_TX
3143                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3144
3145                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3146
3147                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3148                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3149                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3150                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3151                               (I40E_QUEUE_TYPE_RX
3152                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3153
3154                         /* Terminate the linked list */
3155                         if (q == (q_vector->num_ringpairs - 1))
3156                                 val |= (I40E_QUEUE_END_OF_LIST
3157                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3158
3159                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3160                         qp++;
3161                 }
3162         }
3163
3164         i40e_flush(hw);
3165 }
3166
3167 /**
3168  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3169  * @hw: ptr to the hardware info
3170  **/
3171 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3172 {
3173         struct i40e_hw *hw = &pf->hw;
3174         u32 val;
3175
3176         /* clear things first */
3177         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3178         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3179
3180         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3181               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3182               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3183               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3184               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3185               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3186               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3187               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3188
3189         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3190                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3191
3192         if (pf->flags & I40E_FLAG_PTP)
3193                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3194
3195         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3196
3197         /* SW_ITR_IDX = 0, but don't change INTENA */
3198         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3199                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3200
3201         /* OTHER_ITR_IDX = 0 */
3202         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3203 }
3204
3205 /**
3206  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3207  * @vsi: the VSI being configured
3208  **/
3209 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3210 {
3211         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3212         struct i40e_pf *pf = vsi->back;
3213         struct i40e_hw *hw = &pf->hw;
3214         u32 val;
3215
3216         /* set the ITR configuration */
3217         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3218         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3219         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3220         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3221         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3222         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3223         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3224
3225         i40e_enable_misc_int_causes(pf);
3226
3227         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3228         wr32(hw, I40E_PFINT_LNKLST0, 0);
3229
3230         /* Associate the queue pair to the vector and enable the queue int */
3231         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3232               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3233               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3234
3235         wr32(hw, I40E_QINT_RQCTL(0), val);
3236
3237         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3238               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3239               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3240
3241         wr32(hw, I40E_QINT_TQCTL(0), val);
3242         i40e_flush(hw);
3243 }
3244
3245 /**
3246  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3247  * @pf: board private structure
3248  **/
3249 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3250 {
3251         struct i40e_hw *hw = &pf->hw;
3252
3253         wr32(hw, I40E_PFINT_DYN_CTL0,
3254              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3255         i40e_flush(hw);
3256 }
3257
3258 /**
3259  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3260  * @pf: board private structure
3261  **/
3262 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3263 {
3264         struct i40e_hw *hw = &pf->hw;
3265         u32 val;
3266
3267         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3268               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3269               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3270
3271         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3272         i40e_flush(hw);
3273 }
3274
3275 /**
3276  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3277  * @vsi: pointer to a vsi
3278  * @vector: disable a particular Hw Interrupt vector
3279  **/
3280 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3281 {
3282         struct i40e_pf *pf = vsi->back;
3283         struct i40e_hw *hw = &pf->hw;
3284         u32 val;
3285
3286         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3287         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3288         i40e_flush(hw);
3289 }
3290
3291 /**
3292  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3293  * @irq: interrupt number
3294  * @data: pointer to a q_vector
3295  **/
3296 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3297 {
3298         struct i40e_q_vector *q_vector = data;
3299
3300         if (!q_vector->tx.ring && !q_vector->rx.ring)
3301                 return IRQ_HANDLED;
3302
3303         napi_schedule_irqoff(&q_vector->napi);
3304
3305         return IRQ_HANDLED;
3306 }
3307
3308 /**
3309  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3310  * @vsi: the VSI being configured
3311  * @basename: name for the vector
3312  *
3313  * Allocates MSI-X vectors and requests interrupts from the kernel.
3314  **/
3315 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3316 {
3317         int q_vectors = vsi->num_q_vectors;
3318         struct i40e_pf *pf = vsi->back;
3319         int base = vsi->base_vector;
3320         int rx_int_idx = 0;
3321         int tx_int_idx = 0;
3322         int vector, err;
3323
3324         for (vector = 0; vector < q_vectors; vector++) {
3325                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3326
3327                 if (q_vector->tx.ring && q_vector->rx.ring) {
3328                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3329                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3330                         tx_int_idx++;
3331                 } else if (q_vector->rx.ring) {
3332                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3333                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3334                 } else if (q_vector->tx.ring) {
3335                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3336                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3337                 } else {
3338                         /* skip this unused q_vector */
3339                         continue;
3340                 }
3341                 err = request_irq(pf->msix_entries[base + vector].vector,
3342                                   vsi->irq_handler,
3343                                   0,
3344                                   q_vector->name,
3345                                   q_vector);
3346                 if (err) {
3347                         dev_info(&pf->pdev->dev,
3348                                  "MSIX request_irq failed, error: %d\n", err);
3349                         goto free_queue_irqs;
3350                 }
3351                 /* assign the mask for this irq */
3352                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3353                                       &q_vector->affinity_mask);
3354         }
3355
3356         vsi->irqs_ready = true;
3357         return 0;
3358
3359 free_queue_irqs:
3360         while (vector) {
3361                 vector--;
3362                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3363                                       NULL);
3364                 free_irq(pf->msix_entries[base + vector].vector,
3365                          &(vsi->q_vectors[vector]));
3366         }
3367         return err;
3368 }
3369
3370 /**
3371  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3372  * @vsi: the VSI being un-configured
3373  **/
3374 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3375 {
3376         struct i40e_pf *pf = vsi->back;
3377         struct i40e_hw *hw = &pf->hw;
3378         int base = vsi->base_vector;
3379         int i;
3380
3381         for (i = 0; i < vsi->num_queue_pairs; i++) {
3382                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3383                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3384         }
3385
3386         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3387                 for (i = vsi->base_vector;
3388                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3389                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3390
3391                 i40e_flush(hw);
3392                 for (i = 0; i < vsi->num_q_vectors; i++)
3393                         synchronize_irq(pf->msix_entries[i + base].vector);
3394         } else {
3395                 /* Legacy and MSI mode - this stops all interrupt handling */
3396                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3397                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3398                 i40e_flush(hw);
3399                 synchronize_irq(pf->pdev->irq);
3400         }
3401 }
3402
3403 /**
3404  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3405  * @vsi: the VSI being configured
3406  **/
3407 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3408 {
3409         struct i40e_pf *pf = vsi->back;
3410         int i;
3411
3412         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3413                 for (i = 0; i < vsi->num_q_vectors; i++)
3414                         i40e_irq_dynamic_enable(vsi, i);
3415         } else {
3416                 i40e_irq_dynamic_enable_icr0(pf);
3417         }
3418
3419         i40e_flush(&pf->hw);
3420         return 0;
3421 }
3422
3423 /**
3424  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3425  * @pf: board private structure
3426  **/
3427 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3428 {
3429         /* Disable ICR 0 */
3430         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3431         i40e_flush(&pf->hw);
3432 }
3433
3434 /**
3435  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3436  * @irq: interrupt number
3437  * @data: pointer to a q_vector
3438  *
3439  * This is the handler used for all MSI/Legacy interrupts, and deals
3440  * with both queue and non-queue interrupts.  This is also used in
3441  * MSIX mode to handle the non-queue interrupts.
3442  **/
3443 static irqreturn_t i40e_intr(int irq, void *data)
3444 {
3445         struct i40e_pf *pf = (struct i40e_pf *)data;
3446         struct i40e_hw *hw = &pf->hw;
3447         irqreturn_t ret = IRQ_NONE;
3448         u32 icr0, icr0_remaining;
3449         u32 val, ena_mask;
3450
3451         icr0 = rd32(hw, I40E_PFINT_ICR0);
3452         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3453
3454         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3455         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3456                 goto enable_intr;
3457
3458         /* if interrupt but no bits showing, must be SWINT */
3459         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3460             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3461                 pf->sw_int_count++;
3462
3463         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3464             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3465                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3466                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3467                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3468         }
3469
3470         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3471         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3472                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3473                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3474
3475                 /* temporarily disable queue cause for NAPI processing */
3476                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3477
3478                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3479                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3480
3481                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3482                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3483                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3484
3485                 if (!test_bit(__I40E_DOWN, &pf->state))
3486                         napi_schedule_irqoff(&q_vector->napi);
3487         }
3488
3489         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3490                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3491                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3492         }
3493
3494         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3495                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3496                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3497         }
3498
3499         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3500                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3501                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3502         }
3503
3504         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3505                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3506                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3507                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3508                 val = rd32(hw, I40E_GLGEN_RSTAT);
3509                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3510                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3511                 if (val == I40E_RESET_CORER) {
3512                         pf->corer_count++;
3513                 } else if (val == I40E_RESET_GLOBR) {
3514                         pf->globr_count++;
3515                 } else if (val == I40E_RESET_EMPR) {
3516                         pf->empr_count++;
3517                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3518                 }
3519         }
3520
3521         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3522                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3523                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3524                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3525                          rd32(hw, I40E_PFHMC_ERRORINFO),
3526                          rd32(hw, I40E_PFHMC_ERRORDATA));
3527         }
3528
3529         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3530                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3531
3532                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3533                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3534                         i40e_ptp_tx_hwtstamp(pf);
3535                 }
3536         }
3537
3538         /* If a critical error is pending we have no choice but to reset the
3539          * device.
3540          * Report and mask out any remaining unexpected interrupts.
3541          */
3542         icr0_remaining = icr0 & ena_mask;
3543         if (icr0_remaining) {
3544                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3545                          icr0_remaining);
3546                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3547                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3548                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3549                         dev_info(&pf->pdev->dev, "device will be reset\n");
3550                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3551                         i40e_service_event_schedule(pf);
3552                 }
3553                 ena_mask &= ~icr0_remaining;
3554         }
3555         ret = IRQ_HANDLED;
3556
3557 enable_intr:
3558         /* re-enable interrupt causes */
3559         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3560         if (!test_bit(__I40E_DOWN, &pf->state)) {
3561                 i40e_service_event_schedule(pf);
3562                 i40e_irq_dynamic_enable_icr0(pf);
3563         }
3564
3565         return ret;
3566 }
3567
3568 /**
3569  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3570  * @tx_ring:  tx ring to clean
3571  * @budget:   how many cleans we're allowed
3572  *
3573  * Returns true if there's any budget left (e.g. the clean is finished)
3574  **/
3575 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3576 {
3577         struct i40e_vsi *vsi = tx_ring->vsi;
3578         u16 i = tx_ring->next_to_clean;
3579         struct i40e_tx_buffer *tx_buf;
3580         struct i40e_tx_desc *tx_desc;
3581
3582         tx_buf = &tx_ring->tx_bi[i];
3583         tx_desc = I40E_TX_DESC(tx_ring, i);
3584         i -= tx_ring->count;
3585
3586         do {
3587                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3588
3589                 /* if next_to_watch is not set then there is no work pending */
3590                 if (!eop_desc)
3591                         break;
3592
3593                 /* prevent any other reads prior to eop_desc */
3594                 read_barrier_depends();
3595
3596                 /* if the descriptor isn't done, no work yet to do */
3597                 if (!(eop_desc->cmd_type_offset_bsz &
3598                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3599                         break;
3600
3601                 /* clear next_to_watch to prevent false hangs */
3602                 tx_buf->next_to_watch = NULL;
3603
3604                 tx_desc->buffer_addr = 0;
3605                 tx_desc->cmd_type_offset_bsz = 0;
3606                 /* move past filter desc */
3607                 tx_buf++;
3608                 tx_desc++;
3609                 i++;
3610                 if (unlikely(!i)) {
3611                         i -= tx_ring->count;
3612                         tx_buf = tx_ring->tx_bi;
3613                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3614                 }
3615                 /* unmap skb header data */
3616                 dma_unmap_single(tx_ring->dev,
3617                                  dma_unmap_addr(tx_buf, dma),
3618                                  dma_unmap_len(tx_buf, len),
3619                                  DMA_TO_DEVICE);
3620                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3621                         kfree(tx_buf->raw_buf);
3622
3623                 tx_buf->raw_buf = NULL;
3624                 tx_buf->tx_flags = 0;
3625                 tx_buf->next_to_watch = NULL;
3626                 dma_unmap_len_set(tx_buf, len, 0);
3627                 tx_desc->buffer_addr = 0;
3628                 tx_desc->cmd_type_offset_bsz = 0;
3629
3630                 /* move us past the eop_desc for start of next FD desc */
3631                 tx_buf++;
3632                 tx_desc++;
3633                 i++;
3634                 if (unlikely(!i)) {
3635                         i -= tx_ring->count;
3636                         tx_buf = tx_ring->tx_bi;
3637                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3638                 }
3639
3640                 /* update budget accounting */
3641                 budget--;
3642         } while (likely(budget));
3643
3644         i += tx_ring->count;
3645         tx_ring->next_to_clean = i;
3646
3647         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3648                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3649
3650         return budget > 0;
3651 }
3652
3653 /**
3654  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3655  * @irq: interrupt number
3656  * @data: pointer to a q_vector
3657  **/
3658 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3659 {
3660         struct i40e_q_vector *q_vector = data;
3661         struct i40e_vsi *vsi;
3662
3663         if (!q_vector->tx.ring)
3664                 return IRQ_HANDLED;
3665
3666         vsi = q_vector->tx.ring->vsi;
3667         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3668
3669         return IRQ_HANDLED;
3670 }
3671
3672 /**
3673  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3674  * @vsi: the VSI being configured
3675  * @v_idx: vector index
3676  * @qp_idx: queue pair index
3677  **/
3678 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3679 {
3680         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3681         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3682         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3683
3684         tx_ring->q_vector = q_vector;
3685         tx_ring->next = q_vector->tx.ring;
3686         q_vector->tx.ring = tx_ring;
3687         q_vector->tx.count++;
3688
3689         rx_ring->q_vector = q_vector;
3690         rx_ring->next = q_vector->rx.ring;
3691         q_vector->rx.ring = rx_ring;
3692         q_vector->rx.count++;
3693 }
3694
3695 /**
3696  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3697  * @vsi: the VSI being configured
3698  *
3699  * This function maps descriptor rings to the queue-specific vectors
3700  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3701  * one vector per queue pair, but on a constrained vector budget, we
3702  * group the queue pairs as "efficiently" as possible.
3703  **/
3704 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3705 {
3706         int qp_remaining = vsi->num_queue_pairs;
3707         int q_vectors = vsi->num_q_vectors;
3708         int num_ringpairs;
3709         int v_start = 0;
3710         int qp_idx = 0;
3711
3712         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3713          * group them so there are multiple queues per vector.
3714          * It is also important to go through all the vectors available to be
3715          * sure that if we don't use all the vectors, that the remaining vectors
3716          * are cleared. This is especially important when decreasing the
3717          * number of queues in use.
3718          */
3719         for (; v_start < q_vectors; v_start++) {
3720                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3721
3722                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3723
3724                 q_vector->num_ringpairs = num_ringpairs;
3725
3726                 q_vector->rx.count = 0;
3727                 q_vector->tx.count = 0;
3728                 q_vector->rx.ring = NULL;
3729                 q_vector->tx.ring = NULL;
3730
3731                 while (num_ringpairs--) {
3732                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3733                         qp_idx++;
3734                         qp_remaining--;
3735                 }
3736         }
3737 }
3738
3739 /**
3740  * i40e_vsi_request_irq - Request IRQ from the OS
3741  * @vsi: the VSI being configured
3742  * @basename: name for the vector
3743  **/
3744 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3745 {
3746         struct i40e_pf *pf = vsi->back;
3747         int err;
3748
3749         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3750                 err = i40e_vsi_request_irq_msix(vsi, basename);
3751         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3752                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3753                                   pf->int_name, pf);
3754         else
3755                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3756                                   pf->int_name, pf);
3757
3758         if (err)
3759                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3760
3761         return err;
3762 }
3763
3764 #ifdef CONFIG_NET_POLL_CONTROLLER
3765 /**
3766  * i40e_netpoll - A Polling 'interrupt'handler
3767  * @netdev: network interface device structure
3768  *
3769  * This is used by netconsole to send skbs without having to re-enable
3770  * interrupts.  It's not called while the normal interrupt routine is executing.
3771  **/
3772 #ifdef I40E_FCOE
3773 void i40e_netpoll(struct net_device *netdev)
3774 #else
3775 static void i40e_netpoll(struct net_device *netdev)
3776 #endif
3777 {
3778         struct i40e_netdev_priv *np = netdev_priv(netdev);
3779         struct i40e_vsi *vsi = np->vsi;
3780         struct i40e_pf *pf = vsi->back;
3781         int i;
3782
3783         /* if interface is down do nothing */
3784         if (test_bit(__I40E_DOWN, &vsi->state))
3785                 return;
3786
3787         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3788                 for (i = 0; i < vsi->num_q_vectors; i++)
3789                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3790         } else {
3791                 i40e_intr(pf->pdev->irq, netdev);
3792         }
3793 }
3794 #endif
3795
3796 /**
3797  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3798  * @pf: the PF being configured
3799  * @pf_q: the PF queue
3800  * @enable: enable or disable state of the queue
3801  *
3802  * This routine will wait for the given Tx queue of the PF to reach the
3803  * enabled or disabled state.
3804  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3805  * multiple retries; else will return 0 in case of success.
3806  **/
3807 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3808 {
3809         int i;
3810         u32 tx_reg;
3811
3812         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3813                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3814                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3815                         break;
3816
3817                 usleep_range(10, 20);
3818         }
3819         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3820                 return -ETIMEDOUT;
3821
3822         return 0;
3823 }
3824
3825 /**
3826  * i40e_vsi_control_tx - Start or stop a VSI's rings
3827  * @vsi: the VSI being configured
3828  * @enable: start or stop the rings
3829  **/
3830 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3831 {
3832         struct i40e_pf *pf = vsi->back;
3833         struct i40e_hw *hw = &pf->hw;
3834         int i, j, pf_q, ret = 0;
3835         u32 tx_reg;
3836
3837         pf_q = vsi->base_queue;
3838         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3839
3840                 /* warn the TX unit of coming changes */
3841                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3842                 if (!enable)
3843                         usleep_range(10, 20);
3844
3845                 for (j = 0; j < 50; j++) {
3846                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3847                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3848                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3849                                 break;
3850                         usleep_range(1000, 2000);
3851                 }
3852                 /* Skip if the queue is already in the requested state */
3853                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3854                         continue;
3855
3856                 /* turn on/off the queue */
3857                 if (enable) {
3858                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3859                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3860                 } else {
3861                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3862                 }
3863
3864                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3865                 /* No waiting for the Tx queue to disable */
3866                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3867                         continue;
3868
3869                 /* wait for the change to finish */
3870                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3871                 if (ret) {
3872                         dev_info(&pf->pdev->dev,
3873                                  "VSI seid %d Tx ring %d %sable timeout\n",
3874                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3875                         break;
3876                 }
3877         }
3878
3879         if (hw->revision_id == 0)
3880                 mdelay(50);
3881         return ret;
3882 }
3883
3884 /**
3885  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3886  * @pf: the PF being configured
3887  * @pf_q: the PF queue
3888  * @enable: enable or disable state of the queue
3889  *
3890  * This routine will wait for the given Rx queue of the PF to reach the
3891  * enabled or disabled state.
3892  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3893  * multiple retries; else will return 0 in case of success.
3894  **/
3895 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3896 {
3897         int i;
3898         u32 rx_reg;
3899
3900         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3901                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3902                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3903                         break;
3904
3905                 usleep_range(10, 20);
3906         }
3907         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3908                 return -ETIMEDOUT;
3909
3910         return 0;
3911 }
3912
3913 /**
3914  * i40e_vsi_control_rx - Start or stop a VSI's rings
3915  * @vsi: the VSI being configured
3916  * @enable: start or stop the rings
3917  **/
3918 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3919 {
3920         struct i40e_pf *pf = vsi->back;
3921         struct i40e_hw *hw = &pf->hw;
3922         int i, j, pf_q, ret = 0;
3923         u32 rx_reg;
3924
3925         pf_q = vsi->base_queue;
3926         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3927                 for (j = 0; j < 50; j++) {
3928                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3929                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3930                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3931                                 break;
3932                         usleep_range(1000, 2000);
3933                 }
3934
3935                 /* Skip if the queue is already in the requested state */
3936                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3937                         continue;
3938
3939                 /* turn on/off the queue */
3940                 if (enable)
3941                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3942                 else
3943                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3944                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3945
3946                 /* wait for the change to finish */
3947                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3948                 if (ret) {
3949                         dev_info(&pf->pdev->dev,
3950                                  "VSI seid %d Rx ring %d %sable timeout\n",
3951                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3952                         break;
3953                 }
3954         }
3955
3956         return ret;
3957 }
3958
3959 /**
3960  * i40e_vsi_control_rings - Start or stop a VSI's rings
3961  * @vsi: the VSI being configured
3962  * @enable: start or stop the rings
3963  **/
3964 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3965 {
3966         int ret = 0;
3967
3968         /* do rx first for enable and last for disable */
3969         if (request) {
3970                 ret = i40e_vsi_control_rx(vsi, request);
3971                 if (ret)
3972                         return ret;
3973                 ret = i40e_vsi_control_tx(vsi, request);
3974         } else {
3975                 /* Ignore return value, we need to shutdown whatever we can */
3976                 i40e_vsi_control_tx(vsi, request);
3977                 i40e_vsi_control_rx(vsi, request);
3978         }
3979
3980         return ret;
3981 }
3982
3983 /**
3984  * i40e_vsi_free_irq - Free the irq association with the OS
3985  * @vsi: the VSI being configured
3986  **/
3987 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3988 {
3989         struct i40e_pf *pf = vsi->back;
3990         struct i40e_hw *hw = &pf->hw;
3991         int base = vsi->base_vector;
3992         u32 val, qp;
3993         int i;
3994
3995         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3996                 if (!vsi->q_vectors)
3997                         return;
3998
3999                 if (!vsi->irqs_ready)
4000                         return;
4001
4002                 vsi->irqs_ready = false;
4003                 for (i = 0; i < vsi->num_q_vectors; i++) {
4004                         u16 vector = i + base;
4005
4006                         /* free only the irqs that were actually requested */
4007                         if (!vsi->q_vectors[i] ||
4008                             !vsi->q_vectors[i]->num_ringpairs)
4009                                 continue;
4010
4011                         /* clear the affinity_mask in the IRQ descriptor */
4012                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4013                                               NULL);
4014                         free_irq(pf->msix_entries[vector].vector,
4015                                  vsi->q_vectors[i]);
4016
4017                         /* Tear down the interrupt queue link list
4018                          *
4019                          * We know that they come in pairs and always
4020                          * the Rx first, then the Tx.  To clear the
4021                          * link list, stick the EOL value into the
4022                          * next_q field of the registers.
4023                          */
4024                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4025                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4026                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4027                         val |= I40E_QUEUE_END_OF_LIST
4028                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4029                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4030
4031                         while (qp != I40E_QUEUE_END_OF_LIST) {
4032                                 u32 next;
4033
4034                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4035
4036                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4037                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4038                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4039                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4040
4041                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4042                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4043
4044                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4045
4046                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4047
4048                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4049                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4050
4051                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4052                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4053                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4054                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4055
4056                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4057                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4058
4059                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4060                                 qp = next;
4061                         }
4062                 }
4063         } else {
4064                 free_irq(pf->pdev->irq, pf);
4065
4066                 val = rd32(hw, I40E_PFINT_LNKLST0);
4067                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4068                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4069                 val |= I40E_QUEUE_END_OF_LIST
4070                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4071                 wr32(hw, I40E_PFINT_LNKLST0, val);
4072
4073                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4074                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4075                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4076                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4077                          I40E_QINT_RQCTL_INTEVENT_MASK);
4078
4079                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4080                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4081
4082                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4083
4084                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4085
4086                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4087                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4088                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4089                          I40E_QINT_TQCTL_INTEVENT_MASK);
4090
4091                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4092                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4093
4094                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4095         }
4096 }
4097
4098 /**
4099  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4100  * @vsi: the VSI being configured
4101  * @v_idx: Index of vector to be freed
4102  *
4103  * This function frees the memory allocated to the q_vector.  In addition if
4104  * NAPI is enabled it will delete any references to the NAPI struct prior
4105  * to freeing the q_vector.
4106  **/
4107 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4108 {
4109         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4110         struct i40e_ring *ring;
4111
4112         if (!q_vector)
4113                 return;
4114
4115         /* disassociate q_vector from rings */
4116         i40e_for_each_ring(ring, q_vector->tx)
4117                 ring->q_vector = NULL;
4118
4119         i40e_for_each_ring(ring, q_vector->rx)
4120                 ring->q_vector = NULL;
4121
4122         /* only VSI w/ an associated netdev is set up w/ NAPI */
4123         if (vsi->netdev)
4124                 netif_napi_del(&q_vector->napi);
4125
4126         vsi->q_vectors[v_idx] = NULL;
4127
4128         kfree_rcu(q_vector, rcu);
4129 }
4130
4131 /**
4132  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4133  * @vsi: the VSI being un-configured
4134  *
4135  * This frees the memory allocated to the q_vectors and
4136  * deletes references to the NAPI struct.
4137  **/
4138 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4139 {
4140         int v_idx;
4141
4142         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4143                 i40e_free_q_vector(vsi, v_idx);
4144 }
4145
4146 /**
4147  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4148  * @pf: board private structure
4149  **/
4150 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4151 {
4152         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4153         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4154                 pci_disable_msix(pf->pdev);
4155                 kfree(pf->msix_entries);
4156                 pf->msix_entries = NULL;
4157                 kfree(pf->irq_pile);
4158                 pf->irq_pile = NULL;
4159         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4160                 pci_disable_msi(pf->pdev);
4161         }
4162         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4163 }
4164
4165 /**
4166  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4167  * @pf: board private structure
4168  *
4169  * We go through and clear interrupt specific resources and reset the structure
4170  * to pre-load conditions
4171  **/
4172 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4173 {
4174         int i;
4175
4176         i40e_stop_misc_vector(pf);
4177         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4178                 synchronize_irq(pf->msix_entries[0].vector);
4179                 free_irq(pf->msix_entries[0].vector, pf);
4180         }
4181
4182         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4183         for (i = 0; i < pf->num_alloc_vsi; i++)
4184                 if (pf->vsi[i])
4185                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4186         i40e_reset_interrupt_capability(pf);
4187 }
4188
4189 /**
4190  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4191  * @vsi: the VSI being configured
4192  **/
4193 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4194 {
4195         int q_idx;
4196
4197         if (!vsi->netdev)
4198                 return;
4199
4200         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4201                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4202 }
4203
4204 /**
4205  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4206  * @vsi: the VSI being configured
4207  **/
4208 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4209 {
4210         int q_idx;
4211
4212         if (!vsi->netdev)
4213                 return;
4214
4215         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4216                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4217 }
4218
4219 /**
4220  * i40e_vsi_close - Shut down a VSI
4221  * @vsi: the vsi to be quelled
4222  **/
4223 static void i40e_vsi_close(struct i40e_vsi *vsi)
4224 {
4225         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4226                 i40e_down(vsi);
4227         i40e_vsi_free_irq(vsi);
4228         i40e_vsi_free_tx_resources(vsi);
4229         i40e_vsi_free_rx_resources(vsi);
4230         vsi->current_netdev_flags = 0;
4231 }
4232
4233 /**
4234  * i40e_quiesce_vsi - Pause a given VSI
4235  * @vsi: the VSI being paused
4236  **/
4237 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4238 {
4239         if (test_bit(__I40E_DOWN, &vsi->state))
4240                 return;
4241
4242         /* No need to disable FCoE VSI when Tx suspended */
4243         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4244             vsi->type == I40E_VSI_FCOE) {
4245                 dev_dbg(&vsi->back->pdev->dev,
4246                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4247                 return;
4248         }
4249
4250         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4251         if (vsi->netdev && netif_running(vsi->netdev))
4252                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4253         else
4254                 i40e_vsi_close(vsi);
4255 }
4256
4257 /**
4258  * i40e_unquiesce_vsi - Resume a given VSI
4259  * @vsi: the VSI being resumed
4260  **/
4261 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4262 {
4263         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4264                 return;
4265
4266         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4267         if (vsi->netdev && netif_running(vsi->netdev))
4268                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4269         else
4270                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4271 }
4272
4273 /**
4274  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4275  * @pf: the PF
4276  **/
4277 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4278 {
4279         int v;
4280
4281         for (v = 0; v < pf->num_alloc_vsi; v++) {
4282                 if (pf->vsi[v])
4283                         i40e_quiesce_vsi(pf->vsi[v]);
4284         }
4285 }
4286
4287 /**
4288  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4289  * @pf: the PF
4290  **/
4291 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4292 {
4293         int v;
4294
4295         for (v = 0; v < pf->num_alloc_vsi; v++) {
4296                 if (pf->vsi[v])
4297                         i40e_unquiesce_vsi(pf->vsi[v]);
4298         }
4299 }
4300
4301 #ifdef CONFIG_I40E_DCB
4302 /**
4303  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4304  * @vsi: the VSI being configured
4305  *
4306  * This function waits for the given VSI's Tx queues to be disabled.
4307  **/
4308 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4309 {
4310         struct i40e_pf *pf = vsi->back;
4311         int i, pf_q, ret;
4312
4313         pf_q = vsi->base_queue;
4314         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4315                 /* Check and wait for the disable status of the queue */
4316                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4317                 if (ret) {
4318                         dev_info(&pf->pdev->dev,
4319                                  "VSI seid %d Tx ring %d disable timeout\n",
4320                                  vsi->seid, pf_q);
4321                         return ret;
4322                 }
4323         }
4324
4325         return 0;
4326 }
4327
4328 /**
4329  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4330  * @pf: the PF
4331  *
4332  * This function waits for the Tx queues to be in disabled state for all the
4333  * VSIs that are managed by this PF.
4334  **/
4335 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4336 {
4337         int v, ret = 0;
4338
4339         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4340                 /* No need to wait for FCoE VSI queues */
4341                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4342                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4343                         if (ret)
4344                                 break;
4345                 }
4346         }
4347
4348         return ret;
4349 }
4350
4351 #endif
4352
4353 /**
4354  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4355  * @q_idx: TX queue number
4356  * @vsi: Pointer to VSI struct
4357  *
4358  * This function checks specified queue for given VSI. Detects hung condition.
4359  * Sets hung bit since it is two step process. Before next run of service task
4360  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4361  * hung condition remain unchanged and during subsequent run, this function
4362  * issues SW interrupt to recover from hung condition.
4363  **/
4364 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4365 {
4366         struct i40e_ring *tx_ring = NULL;
4367         struct i40e_pf  *pf;
4368         u32 head, val, tx_pending;
4369         int i;
4370
4371         pf = vsi->back;
4372
4373         /* now that we have an index, find the tx_ring struct */
4374         for (i = 0; i < vsi->num_queue_pairs; i++) {
4375                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4376                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4377                                 tx_ring = vsi->tx_rings[i];
4378                                 break;
4379                         }
4380                 }
4381         }
4382
4383         if (!tx_ring)
4384                 return;
4385
4386         /* Read interrupt register */
4387         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4388                 val = rd32(&pf->hw,
4389                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4390                                                tx_ring->vsi->base_vector - 1));
4391         else
4392                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4393
4394         /* Bail out if interrupts are disabled because napi_poll
4395          * execution in-progress or will get scheduled soon.
4396          * napi_poll cleans TX and RX queues and updates 'next_to_clean'.
4397          */
4398         if (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))
4399                 return;
4400
4401         head = i40e_get_head(tx_ring);
4402
4403         tx_pending = i40e_get_tx_pending(tx_ring);
4404
4405         /* HW is done executing descriptors, updated HEAD write back,
4406          * but SW hasn't processed those descriptors. If interrupt is
4407          * not generated from this point ON, it could result into
4408          * dev_watchdog detecting timeout on those netdev_queue,
4409          * hence proactively trigger SW interrupt.
4410          */
4411         if (tx_pending) {
4412                 /* NAPI Poll didn't run and clear since it was set */
4413                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4414                                        &tx_ring->q_vector->hung_detected)) {
4415                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4416                                     vsi->seid, q_idx, tx_pending,
4417                                     tx_ring->next_to_clean, head,
4418                                     tx_ring->next_to_use,
4419                                     readl(tx_ring->tail));
4420                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4421                                     vsi->seid, q_idx, val);
4422                         i40e_force_wb(vsi, tx_ring->q_vector);
4423                 } else {
4424                         /* First Chance - detected possible hung */
4425                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4426                                 &tx_ring->q_vector->hung_detected);
4427                 }
4428         }
4429 }
4430
4431 /**
4432  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4433  * @pf:  pointer to PF struct
4434  *
4435  * LAN VSI has netdev and netdev has TX queues. This function is to check
4436  * each of those TX queues if they are hung, trigger recovery by issuing
4437  * SW interrupt.
4438  **/
4439 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4440 {
4441         struct net_device *netdev;
4442         struct i40e_vsi *vsi;
4443         int i;
4444
4445         /* Only for LAN VSI */
4446         vsi = pf->vsi[pf->lan_vsi];
4447
4448         if (!vsi)
4449                 return;
4450
4451         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4452         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4453             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4454                 return;
4455
4456         /* Make sure type is MAIN VSI */
4457         if (vsi->type != I40E_VSI_MAIN)
4458                 return;
4459
4460         netdev = vsi->netdev;
4461         if (!netdev)
4462                 return;
4463
4464         /* Bail out if netif_carrier is not OK */
4465         if (!netif_carrier_ok(netdev))
4466                 return;
4467
4468         /* Go thru' TX queues for netdev */
4469         for (i = 0; i < netdev->num_tx_queues; i++) {
4470                 struct netdev_queue *q;
4471
4472                 q = netdev_get_tx_queue(netdev, i);
4473                 if (q)
4474                         i40e_detect_recover_hung_queue(i, vsi);
4475         }
4476 }
4477
4478 /**
4479  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4480  * @pf: pointer to PF
4481  *
4482  * Get TC map for ISCSI PF type that will include iSCSI TC
4483  * and LAN TC.
4484  **/
4485 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4486 {
4487         struct i40e_dcb_app_priority_table app;
4488         struct i40e_hw *hw = &pf->hw;
4489         u8 enabled_tc = 1; /* TC0 is always enabled */
4490         u8 tc, i;
4491         /* Get the iSCSI APP TLV */
4492         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4493
4494         for (i = 0; i < dcbcfg->numapps; i++) {
4495                 app = dcbcfg->app[i];
4496                 if (app.selector == I40E_APP_SEL_TCPIP &&
4497                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4498                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4499                         enabled_tc |= BIT_ULL(tc);
4500                         break;
4501                 }
4502         }
4503
4504         return enabled_tc;
4505 }
4506
4507 /**
4508  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4509  * @dcbcfg: the corresponding DCBx configuration structure
4510  *
4511  * Return the number of TCs from given DCBx configuration
4512  **/
4513 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4514 {
4515         u8 num_tc = 0;
4516         int i;
4517
4518         /* Scan the ETS Config Priority Table to find
4519          * traffic class enabled for a given priority
4520          * and use the traffic class index to get the
4521          * number of traffic classes enabled
4522          */
4523         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4524                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4525                         num_tc = dcbcfg->etscfg.prioritytable[i];
4526         }
4527
4528         /* Traffic class index starts from zero so
4529          * increment to return the actual count
4530          */
4531         return num_tc + 1;
4532 }
4533
4534 /**
4535  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4536  * @dcbcfg: the corresponding DCBx configuration structure
4537  *
4538  * Query the current DCB configuration and return the number of
4539  * traffic classes enabled from the given DCBX config
4540  **/
4541 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4542 {
4543         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4544         u8 enabled_tc = 1;
4545         u8 i;
4546
4547         for (i = 0; i < num_tc; i++)
4548                 enabled_tc |= BIT(i);
4549
4550         return enabled_tc;
4551 }
4552
4553 /**
4554  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4555  * @pf: PF being queried
4556  *
4557  * Return number of traffic classes enabled for the given PF
4558  **/
4559 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4560 {
4561         struct i40e_hw *hw = &pf->hw;
4562         u8 i, enabled_tc;
4563         u8 num_tc = 0;
4564         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4565
4566         /* If DCB is not enabled then always in single TC */
4567         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4568                 return 1;
4569
4570         /* SFP mode will be enabled for all TCs on port */
4571         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4572                 return i40e_dcb_get_num_tc(dcbcfg);
4573
4574         /* MFP mode return count of enabled TCs for this PF */
4575         if (pf->hw.func_caps.iscsi)
4576                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4577         else
4578                 return 1; /* Only TC0 */
4579
4580         /* At least have TC0 */
4581         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4582         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4583                 if (enabled_tc & BIT_ULL(i))
4584                         num_tc++;
4585         }
4586         return num_tc;
4587 }
4588
4589 /**
4590  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4591  * @pf: PF being queried
4592  *
4593  * Return a bitmap for first enabled traffic class for this PF.
4594  **/
4595 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4596 {
4597         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4598         u8 i = 0;
4599
4600         if (!enabled_tc)
4601                 return 0x1; /* TC0 */
4602
4603         /* Find the first enabled TC */
4604         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4605                 if (enabled_tc & BIT_ULL(i))
4606                         break;
4607         }
4608
4609         return BIT(i);
4610 }
4611
4612 /**
4613  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4614  * @pf: PF being queried
4615  *
4616  * Return a bitmap for enabled traffic classes for this PF.
4617  **/
4618 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4619 {
4620         /* If DCB is not enabled for this PF then just return default TC */
4621         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4622                 return i40e_pf_get_default_tc(pf);
4623
4624         /* SFP mode we want PF to be enabled for all TCs */
4625         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4626                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4627
4628         /* MFP enabled and iSCSI PF type */
4629         if (pf->hw.func_caps.iscsi)
4630                 return i40e_get_iscsi_tc_map(pf);
4631         else
4632                 return i40e_pf_get_default_tc(pf);
4633 }
4634
4635 /**
4636  * i40e_vsi_get_bw_info - Query VSI BW Information
4637  * @vsi: the VSI being queried
4638  *
4639  * Returns 0 on success, negative value on failure
4640  **/
4641 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4642 {
4643         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4644         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4645         struct i40e_pf *pf = vsi->back;
4646         struct i40e_hw *hw = &pf->hw;
4647         i40e_status ret;
4648         u32 tc_bw_max;
4649         int i;
4650
4651         /* Get the VSI level BW configuration */
4652         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4653         if (ret) {
4654                 dev_info(&pf->pdev->dev,
4655                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4656                          i40e_stat_str(&pf->hw, ret),
4657                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4658                 return -EINVAL;
4659         }
4660
4661         /* Get the VSI level BW configuration per TC */
4662         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4663                                                NULL);
4664         if (ret) {
4665                 dev_info(&pf->pdev->dev,
4666                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4667                          i40e_stat_str(&pf->hw, ret),
4668                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4669                 return -EINVAL;
4670         }
4671
4672         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4673                 dev_info(&pf->pdev->dev,
4674                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4675                          bw_config.tc_valid_bits,
4676                          bw_ets_config.tc_valid_bits);
4677                 /* Still continuing */
4678         }
4679
4680         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4681         vsi->bw_max_quanta = bw_config.max_bw;
4682         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4683                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4684         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4685                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4686                 vsi->bw_ets_limit_credits[i] =
4687                                         le16_to_cpu(bw_ets_config.credits[i]);
4688                 /* 3 bits out of 4 for each TC */
4689                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4690         }
4691
4692         return 0;
4693 }
4694
4695 /**
4696  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4697  * @vsi: the VSI being configured
4698  * @enabled_tc: TC bitmap
4699  * @bw_credits: BW shared credits per TC
4700  *
4701  * Returns 0 on success, negative value on failure
4702  **/
4703 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4704                                        u8 *bw_share)
4705 {
4706         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4707         i40e_status ret;
4708         int i;
4709
4710         bw_data.tc_valid_bits = enabled_tc;
4711         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4712                 bw_data.tc_bw_credits[i] = bw_share[i];
4713
4714         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4715                                        NULL);
4716         if (ret) {
4717                 dev_info(&vsi->back->pdev->dev,
4718                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4719                          vsi->back->hw.aq.asq_last_status);
4720                 return -EINVAL;
4721         }
4722
4723         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4724                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4725
4726         return 0;
4727 }
4728
4729 /**
4730  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4731  * @vsi: the VSI being configured
4732  * @enabled_tc: TC map to be enabled
4733  *
4734  **/
4735 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4736 {
4737         struct net_device *netdev = vsi->netdev;
4738         struct i40e_pf *pf = vsi->back;
4739         struct i40e_hw *hw = &pf->hw;
4740         u8 netdev_tc = 0;
4741         int i;
4742         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4743
4744         if (!netdev)
4745                 return;
4746
4747         if (!enabled_tc) {
4748                 netdev_reset_tc(netdev);
4749                 return;
4750         }
4751
4752         /* Set up actual enabled TCs on the VSI */
4753         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4754                 return;
4755
4756         /* set per TC queues for the VSI */
4757         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4758                 /* Only set TC queues for enabled tcs
4759                  *
4760                  * e.g. For a VSI that has TC0 and TC3 enabled the
4761                  * enabled_tc bitmap would be 0x00001001; the driver
4762                  * will set the numtc for netdev as 2 that will be
4763                  * referenced by the netdev layer as TC 0 and 1.
4764                  */
4765                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4766                         netdev_set_tc_queue(netdev,
4767                                         vsi->tc_config.tc_info[i].netdev_tc,
4768                                         vsi->tc_config.tc_info[i].qcount,
4769                                         vsi->tc_config.tc_info[i].qoffset);
4770         }
4771
4772         /* Assign UP2TC map for the VSI */
4773         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4774                 /* Get the actual TC# for the UP */
4775                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4776                 /* Get the mapped netdev TC# for the UP */
4777                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4778                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4779         }
4780 }
4781
4782 /**
4783  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4784  * @vsi: the VSI being configured
4785  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4786  **/
4787 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4788                                       struct i40e_vsi_context *ctxt)
4789 {
4790         /* copy just the sections touched not the entire info
4791          * since not all sections are valid as returned by
4792          * update vsi params
4793          */
4794         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4795         memcpy(&vsi->info.queue_mapping,
4796                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4797         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4798                sizeof(vsi->info.tc_mapping));
4799 }
4800
4801 /**
4802  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4803  * @vsi: VSI to be configured
4804  * @enabled_tc: TC bitmap
4805  *
4806  * This configures a particular VSI for TCs that are mapped to the
4807  * given TC bitmap. It uses default bandwidth share for TCs across
4808  * VSIs to configure TC for a particular VSI.
4809  *
4810  * NOTE:
4811  * It is expected that the VSI queues have been quisced before calling
4812  * this function.
4813  **/
4814 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4815 {
4816         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4817         struct i40e_vsi_context ctxt;
4818         int ret = 0;
4819         int i;
4820
4821         /* Check if enabled_tc is same as existing or new TCs */
4822         if (vsi->tc_config.enabled_tc == enabled_tc)
4823                 return ret;
4824
4825         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4826         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4827                 if (enabled_tc & BIT_ULL(i))
4828                         bw_share[i] = 1;
4829         }
4830
4831         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4832         if (ret) {
4833                 dev_info(&vsi->back->pdev->dev,
4834                          "Failed configuring TC map %d for VSI %d\n",
4835                          enabled_tc, vsi->seid);
4836                 goto out;
4837         }
4838
4839         /* Update Queue Pairs Mapping for currently enabled UPs */
4840         ctxt.seid = vsi->seid;
4841         ctxt.pf_num = vsi->back->hw.pf_id;
4842         ctxt.vf_num = 0;
4843         ctxt.uplink_seid = vsi->uplink_seid;
4844         ctxt.info = vsi->info;
4845         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4846
4847         /* Update the VSI after updating the VSI queue-mapping information */
4848         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4849         if (ret) {
4850                 dev_info(&vsi->back->pdev->dev,
4851                          "Update vsi tc config failed, err %s aq_err %s\n",
4852                          i40e_stat_str(&vsi->back->hw, ret),
4853                          i40e_aq_str(&vsi->back->hw,
4854                                      vsi->back->hw.aq.asq_last_status));
4855                 goto out;
4856         }
4857         /* update the local VSI info with updated queue map */
4858         i40e_vsi_update_queue_map(vsi, &ctxt);
4859         vsi->info.valid_sections = 0;
4860
4861         /* Update current VSI BW information */
4862         ret = i40e_vsi_get_bw_info(vsi);
4863         if (ret) {
4864                 dev_info(&vsi->back->pdev->dev,
4865                          "Failed updating vsi bw info, err %s aq_err %s\n",
4866                          i40e_stat_str(&vsi->back->hw, ret),
4867                          i40e_aq_str(&vsi->back->hw,
4868                                      vsi->back->hw.aq.asq_last_status));
4869                 goto out;
4870         }
4871
4872         /* Update the netdev TC setup */
4873         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4874 out:
4875         return ret;
4876 }
4877
4878 /**
4879  * i40e_veb_config_tc - Configure TCs for given VEB
4880  * @veb: given VEB
4881  * @enabled_tc: TC bitmap
4882  *
4883  * Configures given TC bitmap for VEB (switching) element
4884  **/
4885 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4886 {
4887         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4888         struct i40e_pf *pf = veb->pf;
4889         int ret = 0;
4890         int i;
4891
4892         /* No TCs or already enabled TCs just return */
4893         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4894                 return ret;
4895
4896         bw_data.tc_valid_bits = enabled_tc;
4897         /* bw_data.absolute_credits is not set (relative) */
4898
4899         /* Enable ETS TCs with equal BW Share for now */
4900         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4901                 if (enabled_tc & BIT_ULL(i))
4902                         bw_data.tc_bw_share_credits[i] = 1;
4903         }
4904
4905         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4906                                                    &bw_data, NULL);
4907         if (ret) {
4908                 dev_info(&pf->pdev->dev,
4909                          "VEB bw config failed, err %s aq_err %s\n",
4910                          i40e_stat_str(&pf->hw, ret),
4911                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4912                 goto out;
4913         }
4914
4915         /* Update the BW information */
4916         ret = i40e_veb_get_bw_info(veb);
4917         if (ret) {
4918                 dev_info(&pf->pdev->dev,
4919                          "Failed getting veb bw config, err %s aq_err %s\n",
4920                          i40e_stat_str(&pf->hw, ret),
4921                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4922         }
4923
4924 out:
4925         return ret;
4926 }
4927
4928 #ifdef CONFIG_I40E_DCB
4929 /**
4930  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4931  * @pf: PF struct
4932  *
4933  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4934  * the caller would've quiesce all the VSIs before calling
4935  * this function
4936  **/
4937 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4938 {
4939         u8 tc_map = 0;
4940         int ret;
4941         u8 v;
4942
4943         /* Enable the TCs available on PF to all VEBs */
4944         tc_map = i40e_pf_get_tc_map(pf);
4945         for (v = 0; v < I40E_MAX_VEB; v++) {
4946                 if (!pf->veb[v])
4947                         continue;
4948                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4949                 if (ret) {
4950                         dev_info(&pf->pdev->dev,
4951                                  "Failed configuring TC for VEB seid=%d\n",
4952                                  pf->veb[v]->seid);
4953                         /* Will try to configure as many components */
4954                 }
4955         }
4956
4957         /* Update each VSI */
4958         for (v = 0; v < pf->num_alloc_vsi; v++) {
4959                 if (!pf->vsi[v])
4960                         continue;
4961
4962                 /* - Enable all TCs for the LAN VSI
4963 #ifdef I40E_FCOE
4964                  * - For FCoE VSI only enable the TC configured
4965                  *   as per the APP TLV
4966 #endif
4967                  * - For all others keep them at TC0 for now
4968                  */
4969                 if (v == pf->lan_vsi)
4970                         tc_map = i40e_pf_get_tc_map(pf);
4971                 else
4972                         tc_map = i40e_pf_get_default_tc(pf);
4973 #ifdef I40E_FCOE
4974                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4975                         tc_map = i40e_get_fcoe_tc_map(pf);
4976 #endif /* #ifdef I40E_FCOE */
4977
4978                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4979                 if (ret) {
4980                         dev_info(&pf->pdev->dev,
4981                                  "Failed configuring TC for VSI seid=%d\n",
4982                                  pf->vsi[v]->seid);
4983                         /* Will try to configure as many components */
4984                 } else {
4985                         /* Re-configure VSI vectors based on updated TC map */
4986                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4987                         if (pf->vsi[v]->netdev)
4988                                 i40e_dcbnl_set_all(pf->vsi[v]);
4989                 }
4990         }
4991 }
4992
4993 /**
4994  * i40e_resume_port_tx - Resume port Tx
4995  * @pf: PF struct
4996  *
4997  * Resume a port's Tx and issue a PF reset in case of failure to
4998  * resume.
4999  **/
5000 static int i40e_resume_port_tx(struct i40e_pf *pf)
5001 {
5002         struct i40e_hw *hw = &pf->hw;
5003         int ret;
5004
5005         ret = i40e_aq_resume_port_tx(hw, NULL);
5006         if (ret) {
5007                 dev_info(&pf->pdev->dev,
5008                          "Resume Port Tx failed, err %s aq_err %s\n",
5009                           i40e_stat_str(&pf->hw, ret),
5010                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5011                 /* Schedule PF reset to recover */
5012                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5013                 i40e_service_event_schedule(pf);
5014         }
5015
5016         return ret;
5017 }
5018
5019 /**
5020  * i40e_init_pf_dcb - Initialize DCB configuration
5021  * @pf: PF being configured
5022  *
5023  * Query the current DCB configuration and cache it
5024  * in the hardware structure
5025  **/
5026 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5027 {
5028         struct i40e_hw *hw = &pf->hw;
5029         int err = 0;
5030
5031         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5032         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
5033             (pf->hw.aq.fw_maj_ver < 4))
5034                 goto out;
5035
5036         /* Get the initial DCB configuration */
5037         err = i40e_init_dcb(hw);
5038         if (!err) {
5039                 /* Device/Function is not DCBX capable */
5040                 if ((!hw->func_caps.dcb) ||
5041                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5042                         dev_info(&pf->pdev->dev,
5043                                  "DCBX offload is not supported or is disabled for this PF.\n");
5044
5045                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5046                                 goto out;
5047
5048                 } else {
5049                         /* When status is not DISABLED then DCBX in FW */
5050                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5051                                        DCB_CAP_DCBX_VER_IEEE;
5052
5053                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5054                         /* Enable DCB tagging only when more than one TC */
5055                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5056                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5057                         dev_dbg(&pf->pdev->dev,
5058                                 "DCBX offload is supported for this PF.\n");
5059                 }
5060         } else {
5061                 dev_info(&pf->pdev->dev,
5062                          "Query for DCB configuration failed, err %s aq_err %s\n",
5063                          i40e_stat_str(&pf->hw, err),
5064                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5065         }
5066
5067 out:
5068         return err;
5069 }
5070 #endif /* CONFIG_I40E_DCB */
5071 #define SPEED_SIZE 14
5072 #define FC_SIZE 8
5073 /**
5074  * i40e_print_link_message - print link up or down
5075  * @vsi: the VSI for which link needs a message
5076  */
5077 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5078 {
5079         char *speed = "Unknown";
5080         char *fc = "Unknown";
5081
5082         if (vsi->current_isup == isup)
5083                 return;
5084         vsi->current_isup = isup;
5085         if (!isup) {
5086                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5087                 return;
5088         }
5089
5090         /* Warn user if link speed on NPAR enabled partition is not at
5091          * least 10GB
5092          */
5093         if (vsi->back->hw.func_caps.npar_enable &&
5094             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5095              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5096                 netdev_warn(vsi->netdev,
5097                             "The partition detected link speed that is less than 10Gbps\n");
5098
5099         switch (vsi->back->hw.phy.link_info.link_speed) {
5100         case I40E_LINK_SPEED_40GB:
5101                 speed = "40 G";
5102                 break;
5103         case I40E_LINK_SPEED_20GB:
5104                 speed = "20 G";
5105                 break;
5106         case I40E_LINK_SPEED_10GB:
5107                 speed = "10 G";
5108                 break;
5109         case I40E_LINK_SPEED_1GB:
5110                 speed = "1000 M";
5111                 break;
5112         case I40E_LINK_SPEED_100MB:
5113                 speed = "100 M";
5114                 break;
5115         default:
5116                 break;
5117         }
5118
5119         switch (vsi->back->hw.fc.current_mode) {
5120         case I40E_FC_FULL:
5121                 fc = "RX/TX";
5122                 break;
5123         case I40E_FC_TX_PAUSE:
5124                 fc = "TX";
5125                 break;
5126         case I40E_FC_RX_PAUSE:
5127                 fc = "RX";
5128                 break;
5129         default:
5130                 fc = "None";
5131                 break;
5132         }
5133
5134         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5135                     speed, fc);
5136 }
5137
5138 /**
5139  * i40e_up_complete - Finish the last steps of bringing up a connection
5140  * @vsi: the VSI being configured
5141  **/
5142 static int i40e_up_complete(struct i40e_vsi *vsi)
5143 {
5144         struct i40e_pf *pf = vsi->back;
5145         int err;
5146
5147         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5148                 i40e_vsi_configure_msix(vsi);
5149         else
5150                 i40e_configure_msi_and_legacy(vsi);
5151
5152         /* start rings */
5153         err = i40e_vsi_control_rings(vsi, true);
5154         if (err)
5155                 return err;
5156
5157         clear_bit(__I40E_DOWN, &vsi->state);
5158         i40e_napi_enable_all(vsi);
5159         i40e_vsi_enable_irq(vsi);
5160
5161         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5162             (vsi->netdev)) {
5163                 i40e_print_link_message(vsi, true);
5164                 netif_tx_start_all_queues(vsi->netdev);
5165                 netif_carrier_on(vsi->netdev);
5166         } else if (vsi->netdev) {
5167                 i40e_print_link_message(vsi, false);
5168                 /* need to check for qualified module here*/
5169                 if ((pf->hw.phy.link_info.link_info &
5170                         I40E_AQ_MEDIA_AVAILABLE) &&
5171                     (!(pf->hw.phy.link_info.an_info &
5172                         I40E_AQ_QUALIFIED_MODULE)))
5173                         netdev_err(vsi->netdev,
5174                                    "the driver failed to link because an unqualified module was detected.");
5175         }
5176
5177         /* replay FDIR SB filters */
5178         if (vsi->type == I40E_VSI_FDIR) {
5179                 /* reset fd counters */
5180                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5181                 if (pf->fd_tcp_rule > 0) {
5182                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5183                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5184                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5185                         pf->fd_tcp_rule = 0;
5186                 }
5187                 i40e_fdir_filter_restore(vsi);
5188         }
5189         i40e_service_event_schedule(pf);
5190
5191         return 0;
5192 }
5193
5194 /**
5195  * i40e_vsi_reinit_locked - Reset the VSI
5196  * @vsi: the VSI being configured
5197  *
5198  * Rebuild the ring structs after some configuration
5199  * has changed, e.g. MTU size.
5200  **/
5201 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5202 {
5203         struct i40e_pf *pf = vsi->back;
5204
5205         WARN_ON(in_interrupt());
5206         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5207                 usleep_range(1000, 2000);
5208         i40e_down(vsi);
5209
5210         /* Give a VF some time to respond to the reset.  The
5211          * two second wait is based upon the watchdog cycle in
5212          * the VF driver.
5213          */
5214         if (vsi->type == I40E_VSI_SRIOV)
5215                 msleep(2000);
5216         i40e_up(vsi);
5217         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5218 }
5219
5220 /**
5221  * i40e_up - Bring the connection back up after being down
5222  * @vsi: the VSI being configured
5223  **/
5224 int i40e_up(struct i40e_vsi *vsi)
5225 {
5226         int err;
5227
5228         err = i40e_vsi_configure(vsi);
5229         if (!err)
5230                 err = i40e_up_complete(vsi);
5231
5232         return err;
5233 }
5234
5235 /**
5236  * i40e_down - Shutdown the connection processing
5237  * @vsi: the VSI being stopped
5238  **/
5239 void i40e_down(struct i40e_vsi *vsi)
5240 {
5241         int i;
5242
5243         /* It is assumed that the caller of this function
5244          * sets the vsi->state __I40E_DOWN bit.
5245          */
5246         if (vsi->netdev) {
5247                 netif_carrier_off(vsi->netdev);
5248                 netif_tx_disable(vsi->netdev);
5249         }
5250         i40e_vsi_disable_irq(vsi);
5251         i40e_vsi_control_rings(vsi, false);
5252         i40e_napi_disable_all(vsi);
5253
5254         for (i = 0; i < vsi->num_queue_pairs; i++) {
5255                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5256                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5257         }
5258 }
5259
5260 /**
5261  * i40e_setup_tc - configure multiple traffic classes
5262  * @netdev: net device to configure
5263  * @tc: number of traffic classes to enable
5264  **/
5265 #ifdef I40E_FCOE
5266 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5267 #else
5268 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5269 #endif
5270 {
5271         struct i40e_netdev_priv *np = netdev_priv(netdev);
5272         struct i40e_vsi *vsi = np->vsi;
5273         struct i40e_pf *pf = vsi->back;
5274         u8 enabled_tc = 0;
5275         int ret = -EINVAL;
5276         int i;
5277
5278         /* Check if DCB enabled to continue */
5279         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5280                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5281                 goto exit;
5282         }
5283
5284         /* Check if MFP enabled */
5285         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5286                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5287                 goto exit;
5288         }
5289
5290         /* Check whether tc count is within enabled limit */
5291         if (tc > i40e_pf_get_num_tc(pf)) {
5292                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5293                 goto exit;
5294         }
5295
5296         /* Generate TC map for number of tc requested */
5297         for (i = 0; i < tc; i++)
5298                 enabled_tc |= BIT_ULL(i);
5299
5300         /* Requesting same TC configuration as already enabled */
5301         if (enabled_tc == vsi->tc_config.enabled_tc)
5302                 return 0;
5303
5304         /* Quiesce VSI queues */
5305         i40e_quiesce_vsi(vsi);
5306
5307         /* Configure VSI for enabled TCs */
5308         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5309         if (ret) {
5310                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5311                             vsi->seid);
5312                 goto exit;
5313         }
5314
5315         /* Unquiesce VSI */
5316         i40e_unquiesce_vsi(vsi);
5317
5318 exit:
5319         return ret;
5320 }
5321
5322 /**
5323  * i40e_open - Called when a network interface is made active
5324  * @netdev: network interface device structure
5325  *
5326  * The open entry point is called when a network interface is made
5327  * active by the system (IFF_UP).  At this point all resources needed
5328  * for transmit and receive operations are allocated, the interrupt
5329  * handler is registered with the OS, the netdev watchdog subtask is
5330  * enabled, and the stack is notified that the interface is ready.
5331  *
5332  * Returns 0 on success, negative value on failure
5333  **/
5334 int i40e_open(struct net_device *netdev)
5335 {
5336         struct i40e_netdev_priv *np = netdev_priv(netdev);
5337         struct i40e_vsi *vsi = np->vsi;
5338         struct i40e_pf *pf = vsi->back;
5339         int err;
5340
5341         /* disallow open during test or if eeprom is broken */
5342         if (test_bit(__I40E_TESTING, &pf->state) ||
5343             test_bit(__I40E_BAD_EEPROM, &pf->state))
5344                 return -EBUSY;
5345
5346         netif_carrier_off(netdev);
5347
5348         err = i40e_vsi_open(vsi);
5349         if (err)
5350                 return err;
5351
5352         /* configure global TSO hardware offload settings */
5353         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5354                                                        TCP_FLAG_FIN) >> 16);
5355         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5356                                                        TCP_FLAG_FIN |
5357                                                        TCP_FLAG_CWR) >> 16);
5358         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5359
5360 #if IS_ENABLED(CONFIG_VXLAN)
5361         vxlan_get_rx_port(netdev);
5362 #endif
5363
5364         return 0;
5365 }
5366
5367 /**
5368  * i40e_vsi_open -
5369  * @vsi: the VSI to open
5370  *
5371  * Finish initialization of the VSI.
5372  *
5373  * Returns 0 on success, negative value on failure
5374  **/
5375 int i40e_vsi_open(struct i40e_vsi *vsi)
5376 {
5377         struct i40e_pf *pf = vsi->back;
5378         char int_name[I40E_INT_NAME_STR_LEN];
5379         int err;
5380
5381         /* allocate descriptors */
5382         err = i40e_vsi_setup_tx_resources(vsi);
5383         if (err)
5384                 goto err_setup_tx;
5385         err = i40e_vsi_setup_rx_resources(vsi);
5386         if (err)
5387                 goto err_setup_rx;
5388
5389         err = i40e_vsi_configure(vsi);
5390         if (err)
5391                 goto err_setup_rx;
5392
5393         if (vsi->netdev) {
5394                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5395                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5396                 err = i40e_vsi_request_irq(vsi, int_name);
5397                 if (err)
5398                         goto err_setup_rx;
5399
5400                 /* Notify the stack of the actual queue counts. */
5401                 err = netif_set_real_num_tx_queues(vsi->netdev,
5402                                                    vsi->num_queue_pairs);
5403                 if (err)
5404                         goto err_set_queues;
5405
5406                 err = netif_set_real_num_rx_queues(vsi->netdev,
5407                                                    vsi->num_queue_pairs);
5408                 if (err)
5409                         goto err_set_queues;
5410
5411         } else if (vsi->type == I40E_VSI_FDIR) {
5412                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5413                          dev_driver_string(&pf->pdev->dev),
5414                          dev_name(&pf->pdev->dev));
5415                 err = i40e_vsi_request_irq(vsi, int_name);
5416
5417         } else {
5418                 err = -EINVAL;
5419                 goto err_setup_rx;
5420         }
5421
5422         err = i40e_up_complete(vsi);
5423         if (err)
5424                 goto err_up_complete;
5425
5426         return 0;
5427
5428 err_up_complete:
5429         i40e_down(vsi);
5430 err_set_queues:
5431         i40e_vsi_free_irq(vsi);
5432 err_setup_rx:
5433         i40e_vsi_free_rx_resources(vsi);
5434 err_setup_tx:
5435         i40e_vsi_free_tx_resources(vsi);
5436         if (vsi == pf->vsi[pf->lan_vsi])
5437                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5438
5439         return err;
5440 }
5441
5442 /**
5443  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5444  * @pf: Pointer to PF
5445  *
5446  * This function destroys the hlist where all the Flow Director
5447  * filters were saved.
5448  **/
5449 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5450 {
5451         struct i40e_fdir_filter *filter;
5452         struct hlist_node *node2;
5453
5454         hlist_for_each_entry_safe(filter, node2,
5455                                   &pf->fdir_filter_list, fdir_node) {
5456                 hlist_del(&filter->fdir_node);
5457                 kfree(filter);
5458         }
5459         pf->fdir_pf_active_filters = 0;
5460 }
5461
5462 /**
5463  * i40e_close - Disables a network interface
5464  * @netdev: network interface device structure
5465  *
5466  * The close entry point is called when an interface is de-activated
5467  * by the OS.  The hardware is still under the driver's control, but
5468  * this netdev interface is disabled.
5469  *
5470  * Returns 0, this is not allowed to fail
5471  **/
5472 #ifdef I40E_FCOE
5473 int i40e_close(struct net_device *netdev)
5474 #else
5475 static int i40e_close(struct net_device *netdev)
5476 #endif
5477 {
5478         struct i40e_netdev_priv *np = netdev_priv(netdev);
5479         struct i40e_vsi *vsi = np->vsi;
5480
5481         i40e_vsi_close(vsi);
5482
5483         return 0;
5484 }
5485
5486 /**
5487  * i40e_do_reset - Start a PF or Core Reset sequence
5488  * @pf: board private structure
5489  * @reset_flags: which reset is requested
5490  *
5491  * The essential difference in resets is that the PF Reset
5492  * doesn't clear the packet buffers, doesn't reset the PE
5493  * firmware, and doesn't bother the other PFs on the chip.
5494  **/
5495 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5496 {
5497         u32 val;
5498
5499         WARN_ON(in_interrupt());
5500
5501         if (i40e_check_asq_alive(&pf->hw))
5502                 i40e_vc_notify_reset(pf);
5503
5504         /* do the biggest reset indicated */
5505         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5506
5507                 /* Request a Global Reset
5508                  *
5509                  * This will start the chip's countdown to the actual full
5510                  * chip reset event, and a warning interrupt to be sent
5511                  * to all PFs, including the requestor.  Our handler
5512                  * for the warning interrupt will deal with the shutdown
5513                  * and recovery of the switch setup.
5514                  */
5515                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5516                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5517                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5518                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5519
5520         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5521
5522                 /* Request a Core Reset
5523                  *
5524                  * Same as Global Reset, except does *not* include the MAC/PHY
5525                  */
5526                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5527                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5528                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5529                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5530                 i40e_flush(&pf->hw);
5531
5532         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5533
5534                 /* Request a PF Reset
5535                  *
5536                  * Resets only the PF-specific registers
5537                  *
5538                  * This goes directly to the tear-down and rebuild of
5539                  * the switch, since we need to do all the recovery as
5540                  * for the Core Reset.
5541                  */
5542                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5543                 i40e_handle_reset_warning(pf);
5544
5545         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5546                 int v;
5547
5548                 /* Find the VSI(s) that requested a re-init */
5549                 dev_info(&pf->pdev->dev,
5550                          "VSI reinit requested\n");
5551                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5552                         struct i40e_vsi *vsi = pf->vsi[v];
5553
5554                         if (vsi != NULL &&
5555                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5556                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5557                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5558                         }
5559                 }
5560         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5561                 int v;
5562
5563                 /* Find the VSI(s) that needs to be brought down */
5564                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5565                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5566                         struct i40e_vsi *vsi = pf->vsi[v];
5567
5568                         if (vsi != NULL &&
5569                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5570                                 set_bit(__I40E_DOWN, &vsi->state);
5571                                 i40e_down(vsi);
5572                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5573                         }
5574                 }
5575         } else {
5576                 dev_info(&pf->pdev->dev,
5577                          "bad reset request 0x%08x\n", reset_flags);
5578         }
5579 }
5580
5581 #ifdef CONFIG_I40E_DCB
5582 /**
5583  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5584  * @pf: board private structure
5585  * @old_cfg: current DCB config
5586  * @new_cfg: new DCB config
5587  **/
5588 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5589                             struct i40e_dcbx_config *old_cfg,
5590                             struct i40e_dcbx_config *new_cfg)
5591 {
5592         bool need_reconfig = false;
5593
5594         /* Check if ETS configuration has changed */
5595         if (memcmp(&new_cfg->etscfg,
5596                    &old_cfg->etscfg,
5597                    sizeof(new_cfg->etscfg))) {
5598                 /* If Priority Table has changed reconfig is needed */
5599                 if (memcmp(&new_cfg->etscfg.prioritytable,
5600                            &old_cfg->etscfg.prioritytable,
5601                            sizeof(new_cfg->etscfg.prioritytable))) {
5602                         need_reconfig = true;
5603                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5604                 }
5605
5606                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5607                            &old_cfg->etscfg.tcbwtable,
5608                            sizeof(new_cfg->etscfg.tcbwtable)))
5609                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5610
5611                 if (memcmp(&new_cfg->etscfg.tsatable,
5612                            &old_cfg->etscfg.tsatable,
5613                            sizeof(new_cfg->etscfg.tsatable)))
5614                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5615         }
5616
5617         /* Check if PFC configuration has changed */
5618         if (memcmp(&new_cfg->pfc,
5619                    &old_cfg->pfc,
5620                    sizeof(new_cfg->pfc))) {
5621                 need_reconfig = true;
5622                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5623         }
5624
5625         /* Check if APP Table has changed */
5626         if (memcmp(&new_cfg->app,
5627                    &old_cfg->app,
5628                    sizeof(new_cfg->app))) {
5629                 need_reconfig = true;
5630                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5631         }
5632
5633         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5634         return need_reconfig;
5635 }
5636
5637 /**
5638  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5639  * @pf: board private structure
5640  * @e: event info posted on ARQ
5641  **/
5642 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5643                                   struct i40e_arq_event_info *e)
5644 {
5645         struct i40e_aqc_lldp_get_mib *mib =
5646                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5647         struct i40e_hw *hw = &pf->hw;
5648         struct i40e_dcbx_config tmp_dcbx_cfg;
5649         bool need_reconfig = false;
5650         int ret = 0;
5651         u8 type;
5652
5653         /* Not DCB capable or capability disabled */
5654         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5655                 return ret;
5656
5657         /* Ignore if event is not for Nearest Bridge */
5658         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5659                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5660         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5661         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5662                 return ret;
5663
5664         /* Check MIB Type and return if event for Remote MIB update */
5665         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5666         dev_dbg(&pf->pdev->dev,
5667                 "LLDP event mib type %s\n", type ? "remote" : "local");
5668         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5669                 /* Update the remote cached instance and return */
5670                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5671                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5672                                 &hw->remote_dcbx_config);
5673                 goto exit;
5674         }
5675
5676         /* Store the old configuration */
5677         tmp_dcbx_cfg = hw->local_dcbx_config;
5678
5679         /* Reset the old DCBx configuration data */
5680         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5681         /* Get updated DCBX data from firmware */
5682         ret = i40e_get_dcb_config(&pf->hw);
5683         if (ret) {
5684                 dev_info(&pf->pdev->dev,
5685                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5686                          i40e_stat_str(&pf->hw, ret),
5687                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5688                 goto exit;
5689         }
5690
5691         /* No change detected in DCBX configs */
5692         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5693                     sizeof(tmp_dcbx_cfg))) {
5694                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5695                 goto exit;
5696         }
5697
5698         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5699                                                &hw->local_dcbx_config);
5700
5701         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5702
5703         if (!need_reconfig)
5704                 goto exit;
5705
5706         /* Enable DCB tagging only when more than one TC */
5707         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5708                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5709         else
5710                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5711
5712         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5713         /* Reconfiguration needed quiesce all VSIs */
5714         i40e_pf_quiesce_all_vsi(pf);
5715
5716         /* Changes in configuration update VEB/VSI */
5717         i40e_dcb_reconfigure(pf);
5718
5719         ret = i40e_resume_port_tx(pf);
5720
5721         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5722         /* In case of error no point in resuming VSIs */
5723         if (ret)
5724                 goto exit;
5725
5726         /* Wait for the PF's Tx queues to be disabled */
5727         ret = i40e_pf_wait_txq_disabled(pf);
5728         if (ret) {
5729                 /* Schedule PF reset to recover */
5730                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5731                 i40e_service_event_schedule(pf);
5732         } else {
5733                 i40e_pf_unquiesce_all_vsi(pf);
5734         }
5735
5736 exit:
5737         return ret;
5738 }
5739 #endif /* CONFIG_I40E_DCB */
5740
5741 /**
5742  * i40e_do_reset_safe - Protected reset path for userland calls.
5743  * @pf: board private structure
5744  * @reset_flags: which reset is requested
5745  *
5746  **/
5747 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5748 {
5749         rtnl_lock();
5750         i40e_do_reset(pf, reset_flags);
5751         rtnl_unlock();
5752 }
5753
5754 /**
5755  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5756  * @pf: board private structure
5757  * @e: event info posted on ARQ
5758  *
5759  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5760  * and VF queues
5761  **/
5762 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5763                                            struct i40e_arq_event_info *e)
5764 {
5765         struct i40e_aqc_lan_overflow *data =
5766                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5767         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5768         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5769         struct i40e_hw *hw = &pf->hw;
5770         struct i40e_vf *vf;
5771         u16 vf_id;
5772
5773         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5774                 queue, qtx_ctl);
5775
5776         /* Queue belongs to VF, find the VF and issue VF reset */
5777         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5778             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5779                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5780                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5781                 vf_id -= hw->func_caps.vf_base_id;
5782                 vf = &pf->vf[vf_id];
5783                 i40e_vc_notify_vf_reset(vf);
5784                 /* Allow VF to process pending reset notification */
5785                 msleep(20);
5786                 i40e_reset_vf(vf, false);
5787         }
5788 }
5789
5790 /**
5791  * i40e_service_event_complete - Finish up the service event
5792  * @pf: board private structure
5793  **/
5794 static void i40e_service_event_complete(struct i40e_pf *pf)
5795 {
5796         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5797
5798         /* flush memory to make sure state is correct before next watchog */
5799         smp_mb__before_atomic();
5800         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5801 }
5802
5803 /**
5804  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5805  * @pf: board private structure
5806  **/
5807 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5808 {
5809         u32 val, fcnt_prog;
5810
5811         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5812         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5813         return fcnt_prog;
5814 }
5815
5816 /**
5817  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5818  * @pf: board private structure
5819  **/
5820 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5821 {
5822         u32 val, fcnt_prog;
5823
5824         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5825         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5826                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5827                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5828         return fcnt_prog;
5829 }
5830
5831 /**
5832  * i40e_get_global_fd_count - Get total FD filters programmed on device
5833  * @pf: board private structure
5834  **/
5835 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5836 {
5837         u32 val, fcnt_prog;
5838
5839         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5840         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5841                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5842                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5843         return fcnt_prog;
5844 }
5845
5846 /**
5847  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5848  * @pf: board private structure
5849  **/
5850 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5851 {
5852         struct i40e_fdir_filter *filter;
5853         u32 fcnt_prog, fcnt_avail;
5854         struct hlist_node *node;
5855
5856         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5857                 return;
5858
5859         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5860          * to re-enable
5861          */
5862         fcnt_prog = i40e_get_global_fd_count(pf);
5863         fcnt_avail = pf->fdir_pf_filter_count;
5864         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5865             (pf->fd_add_err == 0) ||
5866             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5867                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5868                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5869                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5870                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5871                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5872                 }
5873         }
5874         /* Wait for some more space to be available to turn on ATR */
5875         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5876                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5877                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5878                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5879                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5880                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5881                 }
5882         }
5883
5884         /* if hw had a problem adding a filter, delete it */
5885         if (pf->fd_inv > 0) {
5886                 hlist_for_each_entry_safe(filter, node,
5887                                           &pf->fdir_filter_list, fdir_node) {
5888                         if (filter->fd_id == pf->fd_inv) {
5889                                 hlist_del(&filter->fdir_node);
5890                                 kfree(filter);
5891                                 pf->fdir_pf_active_filters--;
5892                         }
5893                 }
5894         }
5895 }
5896
5897 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5898 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5899 /**
5900  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5901  * @pf: board private structure
5902  **/
5903 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5904 {
5905         unsigned long min_flush_time;
5906         int flush_wait_retry = 50;
5907         bool disable_atr = false;
5908         int fd_room;
5909         int reg;
5910
5911         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5912                 return;
5913
5914         if (!time_after(jiffies, pf->fd_flush_timestamp +
5915                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5916                 return;
5917
5918         /* If the flush is happening too quick and we have mostly SB rules we
5919          * should not re-enable ATR for some time.
5920          */
5921         min_flush_time = pf->fd_flush_timestamp +
5922                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5923         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5924
5925         if (!(time_after(jiffies, min_flush_time)) &&
5926             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5927                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5928                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5929                 disable_atr = true;
5930         }
5931
5932         pf->fd_flush_timestamp = jiffies;
5933         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5934         /* flush all filters */
5935         wr32(&pf->hw, I40E_PFQF_CTL_1,
5936              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5937         i40e_flush(&pf->hw);
5938         pf->fd_flush_cnt++;
5939         pf->fd_add_err = 0;
5940         do {
5941                 /* Check FD flush status every 5-6msec */
5942                 usleep_range(5000, 6000);
5943                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5944                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5945                         break;
5946         } while (flush_wait_retry--);
5947         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5948                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5949         } else {
5950                 /* replay sideband filters */
5951                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5952                 if (!disable_atr)
5953                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5954                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5955                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5956                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5957         }
5958
5959 }
5960
5961 /**
5962  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5963  * @pf: board private structure
5964  **/
5965 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5966 {
5967         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5968 }
5969
5970 /* We can see up to 256 filter programming desc in transit if the filters are
5971  * being applied really fast; before we see the first
5972  * filter miss error on Rx queue 0. Accumulating enough error messages before
5973  * reacting will make sure we don't cause flush too often.
5974  */
5975 #define I40E_MAX_FD_PROGRAM_ERROR 256
5976
5977 /**
5978  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5979  * @pf: board private structure
5980  **/
5981 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5982 {
5983
5984         /* if interface is down do nothing */
5985         if (test_bit(__I40E_DOWN, &pf->state))
5986                 return;
5987
5988         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5989                 return;
5990
5991         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5992                 i40e_fdir_flush_and_replay(pf);
5993
5994         i40e_fdir_check_and_reenable(pf);
5995
5996 }
5997
5998 /**
5999  * i40e_vsi_link_event - notify VSI of a link event
6000  * @vsi: vsi to be notified
6001  * @link_up: link up or down
6002  **/
6003 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6004 {
6005         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6006                 return;
6007
6008         switch (vsi->type) {
6009         case I40E_VSI_MAIN:
6010 #ifdef I40E_FCOE
6011         case I40E_VSI_FCOE:
6012 #endif
6013                 if (!vsi->netdev || !vsi->netdev_registered)
6014                         break;
6015
6016                 if (link_up) {
6017                         netif_carrier_on(vsi->netdev);
6018                         netif_tx_wake_all_queues(vsi->netdev);
6019                 } else {
6020                         netif_carrier_off(vsi->netdev);
6021                         netif_tx_stop_all_queues(vsi->netdev);
6022                 }
6023                 break;
6024
6025         case I40E_VSI_SRIOV:
6026         case I40E_VSI_VMDQ2:
6027         case I40E_VSI_CTRL:
6028         case I40E_VSI_MIRROR:
6029         default:
6030                 /* there is no notification for other VSIs */
6031                 break;
6032         }
6033 }
6034
6035 /**
6036  * i40e_veb_link_event - notify elements on the veb of a link event
6037  * @veb: veb to be notified
6038  * @link_up: link up or down
6039  **/
6040 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6041 {
6042         struct i40e_pf *pf;
6043         int i;
6044
6045         if (!veb || !veb->pf)
6046                 return;
6047         pf = veb->pf;
6048
6049         /* depth first... */
6050         for (i = 0; i < I40E_MAX_VEB; i++)
6051                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6052                         i40e_veb_link_event(pf->veb[i], link_up);
6053
6054         /* ... now the local VSIs */
6055         for (i = 0; i < pf->num_alloc_vsi; i++)
6056                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6057                         i40e_vsi_link_event(pf->vsi[i], link_up);
6058 }
6059
6060 /**
6061  * i40e_link_event - Update netif_carrier status
6062  * @pf: board private structure
6063  **/
6064 static void i40e_link_event(struct i40e_pf *pf)
6065 {
6066         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6067         u8 new_link_speed, old_link_speed;
6068         i40e_status status;
6069         bool new_link, old_link;
6070
6071         /* save off old link status information */
6072         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6073
6074         /* set this to force the get_link_status call to refresh state */
6075         pf->hw.phy.get_link_info = true;
6076
6077         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6078
6079         status = i40e_get_link_status(&pf->hw, &new_link);
6080         if (status) {
6081                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6082                         status);
6083                 return;
6084         }
6085
6086         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6087         new_link_speed = pf->hw.phy.link_info.link_speed;
6088
6089         if (new_link == old_link &&
6090             new_link_speed == old_link_speed &&
6091             (test_bit(__I40E_DOWN, &vsi->state) ||
6092              new_link == netif_carrier_ok(vsi->netdev)))
6093                 return;
6094
6095         if (!test_bit(__I40E_DOWN, &vsi->state))
6096                 i40e_print_link_message(vsi, new_link);
6097
6098         /* Notify the base of the switch tree connected to
6099          * the link.  Floating VEBs are not notified.
6100          */
6101         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6102                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6103         else
6104                 i40e_vsi_link_event(vsi, new_link);
6105
6106         if (pf->vf)
6107                 i40e_vc_notify_link_state(pf);
6108
6109         if (pf->flags & I40E_FLAG_PTP)
6110                 i40e_ptp_set_increment(pf);
6111 }
6112
6113 /**
6114  * i40e_watchdog_subtask - periodic checks not using event driven response
6115  * @pf: board private structure
6116  **/
6117 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6118 {
6119         int i;
6120
6121         /* if interface is down do nothing */
6122         if (test_bit(__I40E_DOWN, &pf->state) ||
6123             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6124                 return;
6125
6126         /* make sure we don't do these things too often */
6127         if (time_before(jiffies, (pf->service_timer_previous +
6128                                   pf->service_timer_period)))
6129                 return;
6130         pf->service_timer_previous = jiffies;
6131
6132         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6133                 i40e_link_event(pf);
6134
6135         /* Update the stats for active netdevs so the network stack
6136          * can look at updated numbers whenever it cares to
6137          */
6138         for (i = 0; i < pf->num_alloc_vsi; i++)
6139                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6140                         i40e_update_stats(pf->vsi[i]);
6141
6142         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6143                 /* Update the stats for the active switching components */
6144                 for (i = 0; i < I40E_MAX_VEB; i++)
6145                         if (pf->veb[i])
6146                                 i40e_update_veb_stats(pf->veb[i]);
6147         }
6148
6149         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6150 }
6151
6152 /**
6153  * i40e_reset_subtask - Set up for resetting the device and driver
6154  * @pf: board private structure
6155  **/
6156 static void i40e_reset_subtask(struct i40e_pf *pf)
6157 {
6158         u32 reset_flags = 0;
6159
6160         rtnl_lock();
6161         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6162                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6163                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6164         }
6165         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6166                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6167                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6168         }
6169         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6170                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6171                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6172         }
6173         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6174                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6175                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6176         }
6177         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6178                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6179                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6180         }
6181
6182         /* If there's a recovery already waiting, it takes
6183          * precedence before starting a new reset sequence.
6184          */
6185         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6186                 i40e_handle_reset_warning(pf);
6187                 goto unlock;
6188         }
6189
6190         /* If we're already down or resetting, just bail */
6191         if (reset_flags &&
6192             !test_bit(__I40E_DOWN, &pf->state) &&
6193             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6194                 i40e_do_reset(pf, reset_flags);
6195
6196 unlock:
6197         rtnl_unlock();
6198 }
6199
6200 /**
6201  * i40e_handle_link_event - Handle link event
6202  * @pf: board private structure
6203  * @e: event info posted on ARQ
6204  **/
6205 static void i40e_handle_link_event(struct i40e_pf *pf,
6206                                    struct i40e_arq_event_info *e)
6207 {
6208         struct i40e_aqc_get_link_status *status =
6209                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6210
6211         /* Do a new status request to re-enable LSE reporting
6212          * and load new status information into the hw struct
6213          * This completely ignores any state information
6214          * in the ARQ event info, instead choosing to always
6215          * issue the AQ update link status command.
6216          */
6217         i40e_link_event(pf);
6218
6219         /* check for unqualified module, if link is down */
6220         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6221             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6222             (!(status->link_info & I40E_AQ_LINK_UP)))
6223                 dev_err(&pf->pdev->dev,
6224                         "The driver failed to link because an unqualified module was detected.\n");
6225 }
6226
6227 /**
6228  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6229  * @pf: board private structure
6230  **/
6231 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6232 {
6233         struct i40e_arq_event_info event;
6234         struct i40e_hw *hw = &pf->hw;
6235         u16 pending, i = 0;
6236         i40e_status ret;
6237         u16 opcode;
6238         u32 oldval;
6239         u32 val;
6240
6241         /* Do not run clean AQ when PF reset fails */
6242         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6243                 return;
6244
6245         /* check for error indications */
6246         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6247         oldval = val;
6248         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6249                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6250                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6251         }
6252         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6253                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6254                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6255         }
6256         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6257                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6258                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6259         }
6260         if (oldval != val)
6261                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6262
6263         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6264         oldval = val;
6265         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6266                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6267                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6268         }
6269         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6270                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6271                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6272         }
6273         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6274                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6275                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6276         }
6277         if (oldval != val)
6278                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6279
6280         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6281         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6282         if (!event.msg_buf)
6283                 return;
6284
6285         do {
6286                 ret = i40e_clean_arq_element(hw, &event, &pending);
6287                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6288                         break;
6289                 else if (ret) {
6290                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6291                         break;
6292                 }
6293
6294                 opcode = le16_to_cpu(event.desc.opcode);
6295                 switch (opcode) {
6296
6297                 case i40e_aqc_opc_get_link_status:
6298                         i40e_handle_link_event(pf, &event);
6299                         break;
6300                 case i40e_aqc_opc_send_msg_to_pf:
6301                         ret = i40e_vc_process_vf_msg(pf,
6302                                         le16_to_cpu(event.desc.retval),
6303                                         le32_to_cpu(event.desc.cookie_high),
6304                                         le32_to_cpu(event.desc.cookie_low),
6305                                         event.msg_buf,
6306                                         event.msg_len);
6307                         break;
6308                 case i40e_aqc_opc_lldp_update_mib:
6309                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6310 #ifdef CONFIG_I40E_DCB
6311                         rtnl_lock();
6312                         ret = i40e_handle_lldp_event(pf, &event);
6313                         rtnl_unlock();
6314 #endif /* CONFIG_I40E_DCB */
6315                         break;
6316                 case i40e_aqc_opc_event_lan_overflow:
6317                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6318                         i40e_handle_lan_overflow_event(pf, &event);
6319                         break;
6320                 case i40e_aqc_opc_send_msg_to_peer:
6321                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6322                         break;
6323                 case i40e_aqc_opc_nvm_erase:
6324                 case i40e_aqc_opc_nvm_update:
6325                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6326                         break;
6327                 default:
6328                         dev_info(&pf->pdev->dev,
6329                                  "ARQ Error: Unknown event 0x%04x received\n",
6330                                  opcode);
6331                         break;
6332                 }
6333         } while (pending && (i++ < pf->adminq_work_limit));
6334
6335         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6336         /* re-enable Admin queue interrupt cause */
6337         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6338         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6339         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6340         i40e_flush(hw);
6341
6342         kfree(event.msg_buf);
6343 }
6344
6345 /**
6346  * i40e_verify_eeprom - make sure eeprom is good to use
6347  * @pf: board private structure
6348  **/
6349 static void i40e_verify_eeprom(struct i40e_pf *pf)
6350 {
6351         int err;
6352
6353         err = i40e_diag_eeprom_test(&pf->hw);
6354         if (err) {
6355                 /* retry in case of garbage read */
6356                 err = i40e_diag_eeprom_test(&pf->hw);
6357                 if (err) {
6358                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6359                                  err);
6360                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6361                 }
6362         }
6363
6364         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6365                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6366                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6367         }
6368 }
6369
6370 /**
6371  * i40e_enable_pf_switch_lb
6372  * @pf: pointer to the PF structure
6373  *
6374  * enable switch loop back or die - no point in a return value
6375  **/
6376 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6377 {
6378         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6379         struct i40e_vsi_context ctxt;
6380         int ret;
6381
6382         ctxt.seid = pf->main_vsi_seid;
6383         ctxt.pf_num = pf->hw.pf_id;
6384         ctxt.vf_num = 0;
6385         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6386         if (ret) {
6387                 dev_info(&pf->pdev->dev,
6388                          "couldn't get PF vsi config, err %s aq_err %s\n",
6389                          i40e_stat_str(&pf->hw, ret),
6390                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6391                 return;
6392         }
6393         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6394         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6395         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6396
6397         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6398         if (ret) {
6399                 dev_info(&pf->pdev->dev,
6400                          "update vsi switch failed, err %s aq_err %s\n",
6401                          i40e_stat_str(&pf->hw, ret),
6402                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6403         }
6404 }
6405
6406 /**
6407  * i40e_disable_pf_switch_lb
6408  * @pf: pointer to the PF structure
6409  *
6410  * disable switch loop back or die - no point in a return value
6411  **/
6412 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6413 {
6414         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6415         struct i40e_vsi_context ctxt;
6416         int ret;
6417
6418         ctxt.seid = pf->main_vsi_seid;
6419         ctxt.pf_num = pf->hw.pf_id;
6420         ctxt.vf_num = 0;
6421         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6422         if (ret) {
6423                 dev_info(&pf->pdev->dev,
6424                          "couldn't get PF vsi config, err %s aq_err %s\n",
6425                          i40e_stat_str(&pf->hw, ret),
6426                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6427                 return;
6428         }
6429         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6430         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6431         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6432
6433         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6434         if (ret) {
6435                 dev_info(&pf->pdev->dev,
6436                          "update vsi switch failed, err %s aq_err %s\n",
6437                          i40e_stat_str(&pf->hw, ret),
6438                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6439         }
6440 }
6441
6442 /**
6443  * i40e_config_bridge_mode - Configure the HW bridge mode
6444  * @veb: pointer to the bridge instance
6445  *
6446  * Configure the loop back mode for the LAN VSI that is downlink to the
6447  * specified HW bridge instance. It is expected this function is called
6448  * when a new HW bridge is instantiated.
6449  **/
6450 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6451 {
6452         struct i40e_pf *pf = veb->pf;
6453
6454         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6455                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6456                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6457         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6458                 i40e_disable_pf_switch_lb(pf);
6459         else
6460                 i40e_enable_pf_switch_lb(pf);
6461 }
6462
6463 /**
6464  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6465  * @veb: pointer to the VEB instance
6466  *
6467  * This is a recursive function that first builds the attached VSIs then
6468  * recurses in to build the next layer of VEB.  We track the connections
6469  * through our own index numbers because the seid's from the HW could
6470  * change across the reset.
6471  **/
6472 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6473 {
6474         struct i40e_vsi *ctl_vsi = NULL;
6475         struct i40e_pf *pf = veb->pf;
6476         int v, veb_idx;
6477         int ret;
6478
6479         /* build VSI that owns this VEB, temporarily attached to base VEB */
6480         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6481                 if (pf->vsi[v] &&
6482                     pf->vsi[v]->veb_idx == veb->idx &&
6483                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6484                         ctl_vsi = pf->vsi[v];
6485                         break;
6486                 }
6487         }
6488         if (!ctl_vsi) {
6489                 dev_info(&pf->pdev->dev,
6490                          "missing owner VSI for veb_idx %d\n", veb->idx);
6491                 ret = -ENOENT;
6492                 goto end_reconstitute;
6493         }
6494         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6495                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6496         ret = i40e_add_vsi(ctl_vsi);
6497         if (ret) {
6498                 dev_info(&pf->pdev->dev,
6499                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6500                          veb->idx, ret);
6501                 goto end_reconstitute;
6502         }
6503         i40e_vsi_reset_stats(ctl_vsi);
6504
6505         /* create the VEB in the switch and move the VSI onto the VEB */
6506         ret = i40e_add_veb(veb, ctl_vsi);
6507         if (ret)
6508                 goto end_reconstitute;
6509
6510         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6511                 veb->bridge_mode = BRIDGE_MODE_VEB;
6512         else
6513                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6514         i40e_config_bridge_mode(veb);
6515
6516         /* create the remaining VSIs attached to this VEB */
6517         for (v = 0; v < pf->num_alloc_vsi; v++) {
6518                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6519                         continue;
6520
6521                 if (pf->vsi[v]->veb_idx == veb->idx) {
6522                         struct i40e_vsi *vsi = pf->vsi[v];
6523
6524                         vsi->uplink_seid = veb->seid;
6525                         ret = i40e_add_vsi(vsi);
6526                         if (ret) {
6527                                 dev_info(&pf->pdev->dev,
6528                                          "rebuild of vsi_idx %d failed: %d\n",
6529                                          v, ret);
6530                                 goto end_reconstitute;
6531                         }
6532                         i40e_vsi_reset_stats(vsi);
6533                 }
6534         }
6535
6536         /* create any VEBs attached to this VEB - RECURSION */
6537         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6538                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6539                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6540                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6541                         if (ret)
6542                                 break;
6543                 }
6544         }
6545
6546 end_reconstitute:
6547         return ret;
6548 }
6549
6550 /**
6551  * i40e_get_capabilities - get info about the HW
6552  * @pf: the PF struct
6553  **/
6554 static int i40e_get_capabilities(struct i40e_pf *pf)
6555 {
6556         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6557         u16 data_size;
6558         int buf_len;
6559         int err;
6560
6561         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6562         do {
6563                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6564                 if (!cap_buf)
6565                         return -ENOMEM;
6566
6567                 /* this loads the data into the hw struct for us */
6568                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6569                                             &data_size,
6570                                             i40e_aqc_opc_list_func_capabilities,
6571                                             NULL);
6572                 /* data loaded, buffer no longer needed */
6573                 kfree(cap_buf);
6574
6575                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6576                         /* retry with a larger buffer */
6577                         buf_len = data_size;
6578                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6579                         dev_info(&pf->pdev->dev,
6580                                  "capability discovery failed, err %s aq_err %s\n",
6581                                  i40e_stat_str(&pf->hw, err),
6582                                  i40e_aq_str(&pf->hw,
6583                                              pf->hw.aq.asq_last_status));
6584                         return -ENODEV;
6585                 }
6586         } while (err);
6587
6588         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6589                 dev_info(&pf->pdev->dev,
6590                          "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",
6591                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6592                          pf->hw.func_caps.num_msix_vectors,
6593                          pf->hw.func_caps.num_msix_vectors_vf,
6594                          pf->hw.func_caps.fd_filters_guaranteed,
6595                          pf->hw.func_caps.fd_filters_best_effort,
6596                          pf->hw.func_caps.num_tx_qp,
6597                          pf->hw.func_caps.num_vsis);
6598
6599 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6600                        + pf->hw.func_caps.num_vfs)
6601         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6602                 dev_info(&pf->pdev->dev,
6603                          "got num_vsis %d, setting num_vsis to %d\n",
6604                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6605                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6606         }
6607
6608         return 0;
6609 }
6610
6611 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6612
6613 /**
6614  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6615  * @pf: board private structure
6616  **/
6617 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6618 {
6619         struct i40e_vsi *vsi;
6620         int i;
6621
6622         /* quick workaround for an NVM issue that leaves a critical register
6623          * uninitialized
6624          */
6625         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6626                 static const u32 hkey[] = {
6627                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6628                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6629                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6630                         0x95b3a76d};
6631
6632                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6633                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6634         }
6635
6636         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6637                 return;
6638
6639         /* find existing VSI and see if it needs configuring */
6640         vsi = NULL;
6641         for (i = 0; i < pf->num_alloc_vsi; i++) {
6642                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6643                         vsi = pf->vsi[i];
6644                         break;
6645                 }
6646         }
6647
6648         /* create a new VSI if none exists */
6649         if (!vsi) {
6650                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6651                                      pf->vsi[pf->lan_vsi]->seid, 0);
6652                 if (!vsi) {
6653                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6654                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6655                         return;
6656                 }
6657         }
6658
6659         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6660 }
6661
6662 /**
6663  * i40e_fdir_teardown - release the Flow Director resources
6664  * @pf: board private structure
6665  **/
6666 static void i40e_fdir_teardown(struct i40e_pf *pf)
6667 {
6668         int i;
6669
6670         i40e_fdir_filter_exit(pf);
6671         for (i = 0; i < pf->num_alloc_vsi; i++) {
6672                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6673                         i40e_vsi_release(pf->vsi[i]);
6674                         break;
6675                 }
6676         }
6677 }
6678
6679 /**
6680  * i40e_prep_for_reset - prep for the core to reset
6681  * @pf: board private structure
6682  *
6683  * Close up the VFs and other things in prep for PF Reset.
6684   **/
6685 static void i40e_prep_for_reset(struct i40e_pf *pf)
6686 {
6687         struct i40e_hw *hw = &pf->hw;
6688         i40e_status ret = 0;
6689         u32 v;
6690
6691         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6692         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6693                 return;
6694
6695         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6696
6697         /* quiesce the VSIs and their queues that are not already DOWN */
6698         i40e_pf_quiesce_all_vsi(pf);
6699
6700         for (v = 0; v < pf->num_alloc_vsi; v++) {
6701                 if (pf->vsi[v])
6702                         pf->vsi[v]->seid = 0;
6703         }
6704
6705         i40e_shutdown_adminq(&pf->hw);
6706
6707         /* call shutdown HMC */
6708         if (hw->hmc.hmc_obj) {
6709                 ret = i40e_shutdown_lan_hmc(hw);
6710                 if (ret)
6711                         dev_warn(&pf->pdev->dev,
6712                                  "shutdown_lan_hmc failed: %d\n", ret);
6713         }
6714 }
6715
6716 /**
6717  * i40e_send_version - update firmware with driver version
6718  * @pf: PF struct
6719  */
6720 static void i40e_send_version(struct i40e_pf *pf)
6721 {
6722         struct i40e_driver_version dv;
6723
6724         dv.major_version = DRV_VERSION_MAJOR;
6725         dv.minor_version = DRV_VERSION_MINOR;
6726         dv.build_version = DRV_VERSION_BUILD;
6727         dv.subbuild_version = 0;
6728         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6729         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6730 }
6731
6732 /**
6733  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6734  * @pf: board private structure
6735  * @reinit: if the Main VSI needs to re-initialized.
6736  **/
6737 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6738 {
6739         struct i40e_hw *hw = &pf->hw;
6740         u8 set_fc_aq_fail = 0;
6741         i40e_status ret;
6742         u32 val;
6743         u32 v;
6744
6745         /* Now we wait for GRST to settle out.
6746          * We don't have to delete the VEBs or VSIs from the hw switch
6747          * because the reset will make them disappear.
6748          */
6749         ret = i40e_pf_reset(hw);
6750         if (ret) {
6751                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6752                 set_bit(__I40E_RESET_FAILED, &pf->state);
6753                 goto clear_recovery;
6754         }
6755         pf->pfr_count++;
6756
6757         if (test_bit(__I40E_DOWN, &pf->state))
6758                 goto clear_recovery;
6759         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6760
6761         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6762         ret = i40e_init_adminq(&pf->hw);
6763         if (ret) {
6764                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6765                          i40e_stat_str(&pf->hw, ret),
6766                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6767                 goto clear_recovery;
6768         }
6769
6770         /* re-verify the eeprom if we just had an EMP reset */
6771         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6772                 i40e_verify_eeprom(pf);
6773
6774         i40e_clear_pxe_mode(hw);
6775         ret = i40e_get_capabilities(pf);
6776         if (ret)
6777                 goto end_core_reset;
6778
6779         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6780                                 hw->func_caps.num_rx_qp,
6781                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6782         if (ret) {
6783                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6784                 goto end_core_reset;
6785         }
6786         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6787         if (ret) {
6788                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6789                 goto end_core_reset;
6790         }
6791
6792 #ifdef CONFIG_I40E_DCB
6793         ret = i40e_init_pf_dcb(pf);
6794         if (ret) {
6795                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6796                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6797                 /* Continue without DCB enabled */
6798         }
6799 #endif /* CONFIG_I40E_DCB */
6800 #ifdef I40E_FCOE
6801         i40e_init_pf_fcoe(pf);
6802
6803 #endif
6804         /* do basic switch setup */
6805         ret = i40e_setup_pf_switch(pf, reinit);
6806         if (ret)
6807                 goto end_core_reset;
6808
6809         /* driver is only interested in link up/down and module qualification
6810          * reports from firmware
6811          */
6812         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6813                                        I40E_AQ_EVENT_LINK_UPDOWN |
6814                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6815         if (ret)
6816                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6817                          i40e_stat_str(&pf->hw, ret),
6818                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6819
6820         /* make sure our flow control settings are restored */
6821         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6822         if (ret)
6823                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6824                         i40e_stat_str(&pf->hw, ret),
6825                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6826
6827         /* Rebuild the VSIs and VEBs that existed before reset.
6828          * They are still in our local switch element arrays, so only
6829          * need to rebuild the switch model in the HW.
6830          *
6831          * If there were VEBs but the reconstitution failed, we'll try
6832          * try to recover minimal use by getting the basic PF VSI working.
6833          */
6834         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6835                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6836                 /* find the one VEB connected to the MAC, and find orphans */
6837                 for (v = 0; v < I40E_MAX_VEB; v++) {
6838                         if (!pf->veb[v])
6839                                 continue;
6840
6841                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6842                             pf->veb[v]->uplink_seid == 0) {
6843                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6844
6845                                 if (!ret)
6846                                         continue;
6847
6848                                 /* If Main VEB failed, we're in deep doodoo,
6849                                  * so give up rebuilding the switch and set up
6850                                  * for minimal rebuild of PF VSI.
6851                                  * If orphan failed, we'll report the error
6852                                  * but try to keep going.
6853                                  */
6854                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6855                                         dev_info(&pf->pdev->dev,
6856                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6857                                                  ret);
6858                                         pf->vsi[pf->lan_vsi]->uplink_seid
6859                                                                 = pf->mac_seid;
6860                                         break;
6861                                 } else if (pf->veb[v]->uplink_seid == 0) {
6862                                         dev_info(&pf->pdev->dev,
6863                                                  "rebuild of orphan VEB failed: %d\n",
6864                                                  ret);
6865                                 }
6866                         }
6867                 }
6868         }
6869
6870         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6871                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6872                 /* no VEB, so rebuild only the Main VSI */
6873                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6874                 if (ret) {
6875                         dev_info(&pf->pdev->dev,
6876                                  "rebuild of Main VSI failed: %d\n", ret);
6877                         goto end_core_reset;
6878                 }
6879         }
6880
6881         /* Reconfigure hardware for allowing smaller MSS in the case
6882          * of TSO, so that we avoid the MDD being fired and causing
6883          * a reset in the case of small MSS+TSO.
6884          */
6885 #define I40E_REG_MSS          0x000E64DC
6886 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6887 #define I40E_64BYTE_MSS       0x400000
6888         val = rd32(hw, I40E_REG_MSS);
6889         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6890                 val &= ~I40E_REG_MSS_MIN_MASK;
6891                 val |= I40E_64BYTE_MSS;
6892                 wr32(hw, I40E_REG_MSS, val);
6893         }
6894
6895         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6896             (pf->hw.aq.fw_maj_ver < 4)) {
6897                 msleep(75);
6898                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6899                 if (ret)
6900                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6901                                  i40e_stat_str(&pf->hw, ret),
6902                                  i40e_aq_str(&pf->hw,
6903                                              pf->hw.aq.asq_last_status));
6904         }
6905         /* reinit the misc interrupt */
6906         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6907                 ret = i40e_setup_misc_vector(pf);
6908
6909         /* Add a filter to drop all Flow control frames from any VSI from being
6910          * transmitted. By doing so we stop a malicious VF from sending out
6911          * PAUSE or PFC frames and potentially controlling traffic for other
6912          * PF/VF VSIs.
6913          * The FW can still send Flow control frames if enabled.
6914          */
6915         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6916                                                        pf->main_vsi_seid);
6917
6918         /* restart the VSIs that were rebuilt and running before the reset */
6919         i40e_pf_unquiesce_all_vsi(pf);
6920
6921         if (pf->num_alloc_vfs) {
6922                 for (v = 0; v < pf->num_alloc_vfs; v++)
6923                         i40e_reset_vf(&pf->vf[v], true);
6924         }
6925
6926         /* tell the firmware that we're starting */
6927         i40e_send_version(pf);
6928
6929 end_core_reset:
6930         clear_bit(__I40E_RESET_FAILED, &pf->state);
6931 clear_recovery:
6932         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6933 }
6934
6935 /**
6936  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6937  * @pf: board private structure
6938  *
6939  * Close up the VFs and other things in prep for a Core Reset,
6940  * then get ready to rebuild the world.
6941  **/
6942 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6943 {
6944         i40e_prep_for_reset(pf);
6945         i40e_reset_and_rebuild(pf, false);
6946 }
6947
6948 /**
6949  * i40e_handle_mdd_event
6950  * @pf: pointer to the PF structure
6951  *
6952  * Called from the MDD irq handler to identify possibly malicious vfs
6953  **/
6954 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6955 {
6956         struct i40e_hw *hw = &pf->hw;
6957         bool mdd_detected = false;
6958         bool pf_mdd_detected = false;
6959         struct i40e_vf *vf;
6960         u32 reg;
6961         int i;
6962
6963         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6964                 return;
6965
6966         /* find what triggered the MDD event */
6967         reg = rd32(hw, I40E_GL_MDET_TX);
6968         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6969                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6970                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6971                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6972                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6973                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6974                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6975                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6976                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6977                                 pf->hw.func_caps.base_queue;
6978                 if (netif_msg_tx_err(pf))
6979                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6980                                  event, queue, pf_num, vf_num);
6981                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6982                 mdd_detected = true;
6983         }
6984         reg = rd32(hw, I40E_GL_MDET_RX);
6985         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6986                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6987                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6988                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6989                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6990                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6991                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6992                                 pf->hw.func_caps.base_queue;
6993                 if (netif_msg_rx_err(pf))
6994                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6995                                  event, queue, func);
6996                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6997                 mdd_detected = true;
6998         }
6999
7000         if (mdd_detected) {
7001                 reg = rd32(hw, I40E_PF_MDET_TX);
7002                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7003                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7004                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7005                         pf_mdd_detected = true;
7006                 }
7007                 reg = rd32(hw, I40E_PF_MDET_RX);
7008                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7009                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7010                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7011                         pf_mdd_detected = true;
7012                 }
7013                 /* Queue belongs to the PF, initiate a reset */
7014                 if (pf_mdd_detected) {
7015                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7016                         i40e_service_event_schedule(pf);
7017                 }
7018         }
7019
7020         /* see if one of the VFs needs its hand slapped */
7021         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7022                 vf = &(pf->vf[i]);
7023                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7024                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7025                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7026                         vf->num_mdd_events++;
7027                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7028                                  i);
7029                 }
7030
7031                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7032                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7033                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7034                         vf->num_mdd_events++;
7035                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7036                                  i);
7037                 }
7038
7039                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7040                         dev_info(&pf->pdev->dev,
7041                                  "Too many MDD events on VF %d, disabled\n", i);
7042                         dev_info(&pf->pdev->dev,
7043                                  "Use PF Control I/F to re-enable the VF\n");
7044                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7045                 }
7046         }
7047
7048         /* re-enable mdd interrupt cause */
7049         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7050         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7051         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7052         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7053         i40e_flush(hw);
7054 }
7055
7056 #if IS_ENABLED(CONFIG_VXLAN)
7057 /**
7058  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7059  * @pf: board private structure
7060  **/
7061 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7062 {
7063         struct i40e_hw *hw = &pf->hw;
7064         i40e_status ret;
7065         __be16 port;
7066         int i;
7067
7068         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7069                 return;
7070
7071         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7072
7073         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7074                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7075                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7076                         port = pf->vxlan_ports[i];
7077                         if (port)
7078                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7079                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7080                                                      NULL, NULL);
7081                         else
7082                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7083
7084                         if (ret) {
7085                                 dev_info(&pf->pdev->dev,
7086                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7087                                          port ? "add" : "delete",
7088                                          ntohs(port), i,
7089                                          i40e_stat_str(&pf->hw, ret),
7090                                          i40e_aq_str(&pf->hw,
7091                                                     pf->hw.aq.asq_last_status));
7092                                 pf->vxlan_ports[i] = 0;
7093                         }
7094                 }
7095         }
7096 }
7097
7098 #endif
7099 /**
7100  * i40e_service_task - Run the driver's async subtasks
7101  * @work: pointer to work_struct containing our data
7102  **/
7103 static void i40e_service_task(struct work_struct *work)
7104 {
7105         struct i40e_pf *pf = container_of(work,
7106                                           struct i40e_pf,
7107                                           service_task);
7108         unsigned long start_time = jiffies;
7109
7110         /* don't bother with service tasks if a reset is in progress */
7111         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7112                 i40e_service_event_complete(pf);
7113                 return;
7114         }
7115
7116         i40e_detect_recover_hung(pf);
7117         i40e_reset_subtask(pf);
7118         i40e_handle_mdd_event(pf);
7119         i40e_vc_process_vflr_event(pf);
7120         i40e_watchdog_subtask(pf);
7121         i40e_fdir_reinit_subtask(pf);
7122         i40e_sync_filters_subtask(pf);
7123 #if IS_ENABLED(CONFIG_VXLAN)
7124         i40e_sync_vxlan_filters_subtask(pf);
7125 #endif
7126         i40e_clean_adminq_subtask(pf);
7127
7128         i40e_service_event_complete(pf);
7129
7130         /* If the tasks have taken longer than one timer cycle or there
7131          * is more work to be done, reschedule the service task now
7132          * rather than wait for the timer to tick again.
7133          */
7134         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7135             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7136             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7137             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7138                 i40e_service_event_schedule(pf);
7139 }
7140
7141 /**
7142  * i40e_service_timer - timer callback
7143  * @data: pointer to PF struct
7144  **/
7145 static void i40e_service_timer(unsigned long data)
7146 {
7147         struct i40e_pf *pf = (struct i40e_pf *)data;
7148
7149         mod_timer(&pf->service_timer,
7150                   round_jiffies(jiffies + pf->service_timer_period));
7151         i40e_service_event_schedule(pf);
7152 }
7153
7154 /**
7155  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7156  * @vsi: the VSI being configured
7157  **/
7158 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7159 {
7160         struct i40e_pf *pf = vsi->back;
7161
7162         switch (vsi->type) {
7163         case I40E_VSI_MAIN:
7164                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7165                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7166                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7167                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7168                         vsi->num_q_vectors = pf->num_lan_msix;
7169                 else
7170                         vsi->num_q_vectors = 1;
7171
7172                 break;
7173
7174         case I40E_VSI_FDIR:
7175                 vsi->alloc_queue_pairs = 1;
7176                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7177                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7178                 vsi->num_q_vectors = 1;
7179                 break;
7180
7181         case I40E_VSI_VMDQ2:
7182                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7183                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7184                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7185                 vsi->num_q_vectors = pf->num_vmdq_msix;
7186                 break;
7187
7188         case I40E_VSI_SRIOV:
7189                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7190                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7191                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7192                 break;
7193
7194 #ifdef I40E_FCOE
7195         case I40E_VSI_FCOE:
7196                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7197                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7198                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7199                 vsi->num_q_vectors = pf->num_fcoe_msix;
7200                 break;
7201
7202 #endif /* I40E_FCOE */
7203         default:
7204                 WARN_ON(1);
7205                 return -ENODATA;
7206         }
7207
7208         return 0;
7209 }
7210
7211 /**
7212  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7213  * @type: VSI pointer
7214  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7215  *
7216  * On error: returns error code (negative)
7217  * On success: returns 0
7218  **/
7219 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7220 {
7221         int size;
7222         int ret = 0;
7223
7224         /* allocate memory for both Tx and Rx ring pointers */
7225         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7226         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7227         if (!vsi->tx_rings)
7228                 return -ENOMEM;
7229         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7230
7231         if (alloc_qvectors) {
7232                 /* allocate memory for q_vector pointers */
7233                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7234                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7235                 if (!vsi->q_vectors) {
7236                         ret = -ENOMEM;
7237                         goto err_vectors;
7238                 }
7239         }
7240         return ret;
7241
7242 err_vectors:
7243         kfree(vsi->tx_rings);
7244         return ret;
7245 }
7246
7247 /**
7248  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7249  * @pf: board private structure
7250  * @type: type of VSI
7251  *
7252  * On error: returns error code (negative)
7253  * On success: returns vsi index in PF (positive)
7254  **/
7255 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7256 {
7257         int ret = -ENODEV;
7258         struct i40e_vsi *vsi;
7259         int vsi_idx;
7260         int i;
7261
7262         /* Need to protect the allocation of the VSIs at the PF level */
7263         mutex_lock(&pf->switch_mutex);
7264
7265         /* VSI list may be fragmented if VSI creation/destruction has
7266          * been happening.  We can afford to do a quick scan to look
7267          * for any free VSIs in the list.
7268          *
7269          * find next empty vsi slot, looping back around if necessary
7270          */
7271         i = pf->next_vsi;
7272         while (i < pf->num_alloc_vsi && pf->vsi[i])
7273                 i++;
7274         if (i >= pf->num_alloc_vsi) {
7275                 i = 0;
7276                 while (i < pf->next_vsi && pf->vsi[i])
7277                         i++;
7278         }
7279
7280         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7281                 vsi_idx = i;             /* Found one! */
7282         } else {
7283                 ret = -ENODEV;
7284                 goto unlock_pf;  /* out of VSI slots! */
7285         }
7286         pf->next_vsi = ++i;
7287
7288         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7289         if (!vsi) {
7290                 ret = -ENOMEM;
7291                 goto unlock_pf;
7292         }
7293         vsi->type = type;
7294         vsi->back = pf;
7295         set_bit(__I40E_DOWN, &vsi->state);
7296         vsi->flags = 0;
7297         vsi->idx = vsi_idx;
7298         vsi->rx_itr_setting = pf->rx_itr_default;
7299         vsi->tx_itr_setting = pf->tx_itr_default;
7300         vsi->int_rate_limit = 0;
7301         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7302                                 pf->rss_table_size : 64;
7303         vsi->netdev_registered = false;
7304         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7305         INIT_LIST_HEAD(&vsi->mac_filter_list);
7306         vsi->irqs_ready = false;
7307
7308         ret = i40e_set_num_rings_in_vsi(vsi);
7309         if (ret)
7310                 goto err_rings;
7311
7312         ret = i40e_vsi_alloc_arrays(vsi, true);
7313         if (ret)
7314                 goto err_rings;
7315
7316         /* Setup default MSIX irq handler for VSI */
7317         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7318
7319         /* Initialize VSI lock */
7320         spin_lock_init(&vsi->mac_filter_list_lock);
7321         pf->vsi[vsi_idx] = vsi;
7322         ret = vsi_idx;
7323         goto unlock_pf;
7324
7325 err_rings:
7326         pf->next_vsi = i - 1;
7327         kfree(vsi);
7328 unlock_pf:
7329         mutex_unlock(&pf->switch_mutex);
7330         return ret;
7331 }
7332
7333 /**
7334  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7335  * @type: VSI pointer
7336  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7337  *
7338  * On error: returns error code (negative)
7339  * On success: returns 0
7340  **/
7341 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7342 {
7343         /* free the ring and vector containers */
7344         if (free_qvectors) {
7345                 kfree(vsi->q_vectors);
7346                 vsi->q_vectors = NULL;
7347         }
7348         kfree(vsi->tx_rings);
7349         vsi->tx_rings = NULL;
7350         vsi->rx_rings = NULL;
7351 }
7352
7353 /**
7354  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7355  * and lookup table
7356  * @vsi: Pointer to VSI structure
7357  */
7358 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7359 {
7360         if (!vsi)
7361                 return;
7362
7363         kfree(vsi->rss_hkey_user);
7364         vsi->rss_hkey_user = NULL;
7365
7366         kfree(vsi->rss_lut_user);
7367         vsi->rss_lut_user = NULL;
7368 }
7369
7370 /**
7371  * i40e_vsi_clear - Deallocate the VSI provided
7372  * @vsi: the VSI being un-configured
7373  **/
7374 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7375 {
7376         struct i40e_pf *pf;
7377
7378         if (!vsi)
7379                 return 0;
7380
7381         if (!vsi->back)
7382                 goto free_vsi;
7383         pf = vsi->back;
7384
7385         mutex_lock(&pf->switch_mutex);
7386         if (!pf->vsi[vsi->idx]) {
7387                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7388                         vsi->idx, vsi->idx, vsi, vsi->type);
7389                 goto unlock_vsi;
7390         }
7391
7392         if (pf->vsi[vsi->idx] != vsi) {
7393                 dev_err(&pf->pdev->dev,
7394                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7395                         pf->vsi[vsi->idx]->idx,
7396                         pf->vsi[vsi->idx],
7397                         pf->vsi[vsi->idx]->type,
7398                         vsi->idx, vsi, vsi->type);
7399                 goto unlock_vsi;
7400         }
7401
7402         /* updates the PF for this cleared vsi */
7403         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7404         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7405
7406         i40e_vsi_free_arrays(vsi, true);
7407         i40e_clear_rss_config_user(vsi);
7408
7409         pf->vsi[vsi->idx] = NULL;
7410         if (vsi->idx < pf->next_vsi)
7411                 pf->next_vsi = vsi->idx;
7412
7413 unlock_vsi:
7414         mutex_unlock(&pf->switch_mutex);
7415 free_vsi:
7416         kfree(vsi);
7417
7418         return 0;
7419 }
7420
7421 /**
7422  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7423  * @vsi: the VSI being cleaned
7424  **/
7425 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7426 {
7427         int i;
7428
7429         if (vsi->tx_rings && vsi->tx_rings[0]) {
7430                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7431                         kfree_rcu(vsi->tx_rings[i], rcu);
7432                         vsi->tx_rings[i] = NULL;
7433                         vsi->rx_rings[i] = NULL;
7434                 }
7435         }
7436 }
7437
7438 /**
7439  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7440  * @vsi: the VSI being configured
7441  **/
7442 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7443 {
7444         struct i40e_ring *tx_ring, *rx_ring;
7445         struct i40e_pf *pf = vsi->back;
7446         int i;
7447
7448         /* Set basic values in the rings to be used later during open() */
7449         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7450                 /* allocate space for both Tx and Rx in one shot */
7451                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7452                 if (!tx_ring)
7453                         goto err_out;
7454
7455                 tx_ring->queue_index = i;
7456                 tx_ring->reg_idx = vsi->base_queue + i;
7457                 tx_ring->ring_active = false;
7458                 tx_ring->vsi = vsi;
7459                 tx_ring->netdev = vsi->netdev;
7460                 tx_ring->dev = &pf->pdev->dev;
7461                 tx_ring->count = vsi->num_desc;
7462                 tx_ring->size = 0;
7463                 tx_ring->dcb_tc = 0;
7464                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7465                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7466                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7467                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7468                 vsi->tx_rings[i] = tx_ring;
7469
7470                 rx_ring = &tx_ring[1];
7471                 rx_ring->queue_index = i;
7472                 rx_ring->reg_idx = vsi->base_queue + i;
7473                 rx_ring->ring_active = false;
7474                 rx_ring->vsi = vsi;
7475                 rx_ring->netdev = vsi->netdev;
7476                 rx_ring->dev = &pf->pdev->dev;
7477                 rx_ring->count = vsi->num_desc;
7478                 rx_ring->size = 0;
7479                 rx_ring->dcb_tc = 0;
7480                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7481                         set_ring_16byte_desc_enabled(rx_ring);
7482                 else
7483                         clear_ring_16byte_desc_enabled(rx_ring);
7484                 vsi->rx_rings[i] = rx_ring;
7485         }
7486
7487         return 0;
7488
7489 err_out:
7490         i40e_vsi_clear_rings(vsi);
7491         return -ENOMEM;
7492 }
7493
7494 /**
7495  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7496  * @pf: board private structure
7497  * @vectors: the number of MSI-X vectors to request
7498  *
7499  * Returns the number of vectors reserved, or error
7500  **/
7501 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7502 {
7503         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7504                                         I40E_MIN_MSIX, vectors);
7505         if (vectors < 0) {
7506                 dev_info(&pf->pdev->dev,
7507                          "MSI-X vector reservation failed: %d\n", vectors);
7508                 vectors = 0;
7509         }
7510
7511         return vectors;
7512 }
7513
7514 /**
7515  * i40e_init_msix - Setup the MSIX capability
7516  * @pf: board private structure
7517  *
7518  * Work with the OS to set up the MSIX vectors needed.
7519  *
7520  * Returns the number of vectors reserved or negative on failure
7521  **/
7522 static int i40e_init_msix(struct i40e_pf *pf)
7523 {
7524         struct i40e_hw *hw = &pf->hw;
7525         int vectors_left;
7526         int v_budget, i;
7527         int v_actual;
7528
7529         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7530                 return -ENODEV;
7531
7532         /* The number of vectors we'll request will be comprised of:
7533          *   - Add 1 for "other" cause for Admin Queue events, etc.
7534          *   - The number of LAN queue pairs
7535          *      - Queues being used for RSS.
7536          *              We don't need as many as max_rss_size vectors.
7537          *              use rss_size instead in the calculation since that
7538          *              is governed by number of cpus in the system.
7539          *      - assumes symmetric Tx/Rx pairing
7540          *   - The number of VMDq pairs
7541 #ifdef I40E_FCOE
7542          *   - The number of FCOE qps.
7543 #endif
7544          * Once we count this up, try the request.
7545          *
7546          * If we can't get what we want, we'll simplify to nearly nothing
7547          * and try again.  If that still fails, we punt.
7548          */
7549         vectors_left = hw->func_caps.num_msix_vectors;
7550         v_budget = 0;
7551
7552         /* reserve one vector for miscellaneous handler */
7553         if (vectors_left) {
7554                 v_budget++;
7555                 vectors_left--;
7556         }
7557
7558         /* reserve vectors for the main PF traffic queues */
7559         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7560         vectors_left -= pf->num_lan_msix;
7561         v_budget += pf->num_lan_msix;
7562
7563         /* reserve one vector for sideband flow director */
7564         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7565                 if (vectors_left) {
7566                         v_budget++;
7567                         vectors_left--;
7568                 } else {
7569                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7570                 }
7571         }
7572
7573 #ifdef I40E_FCOE
7574         /* can we reserve enough for FCoE? */
7575         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7576                 if (!vectors_left)
7577                         pf->num_fcoe_msix = 0;
7578                 else if (vectors_left >= pf->num_fcoe_qps)
7579                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7580                 else
7581                         pf->num_fcoe_msix = 1;
7582                 v_budget += pf->num_fcoe_msix;
7583                 vectors_left -= pf->num_fcoe_msix;
7584         }
7585
7586 #endif
7587         /* any vectors left over go for VMDq support */
7588         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7589                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7590                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7591
7592                 /* if we're short on vectors for what's desired, we limit
7593                  * the queues per vmdq.  If this is still more than are
7594                  * available, the user will need to change the number of
7595                  * queues/vectors used by the PF later with the ethtool
7596                  * channels command
7597                  */
7598                 if (vmdq_vecs < vmdq_vecs_wanted)
7599                         pf->num_vmdq_qps = 1;
7600                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7601
7602                 v_budget += vmdq_vecs;
7603                 vectors_left -= vmdq_vecs;
7604         }
7605
7606         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7607                                    GFP_KERNEL);
7608         if (!pf->msix_entries)
7609                 return -ENOMEM;
7610
7611         for (i = 0; i < v_budget; i++)
7612                 pf->msix_entries[i].entry = i;
7613         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7614
7615         if (v_actual != v_budget) {
7616                 /* If we have limited resources, we will start with no vectors
7617                  * for the special features and then allocate vectors to some
7618                  * of these features based on the policy and at the end disable
7619                  * the features that did not get any vectors.
7620                  */
7621 #ifdef I40E_FCOE
7622                 pf->num_fcoe_qps = 0;
7623                 pf->num_fcoe_msix = 0;
7624 #endif
7625                 pf->num_vmdq_msix = 0;
7626         }
7627
7628         if (v_actual < I40E_MIN_MSIX) {
7629                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7630                 kfree(pf->msix_entries);
7631                 pf->msix_entries = NULL;
7632                 return -ENODEV;
7633
7634         } else if (v_actual == I40E_MIN_MSIX) {
7635                 /* Adjust for minimal MSIX use */
7636                 pf->num_vmdq_vsis = 0;
7637                 pf->num_vmdq_qps = 0;
7638                 pf->num_lan_qps = 1;
7639                 pf->num_lan_msix = 1;
7640
7641         } else if (v_actual != v_budget) {
7642                 int vec;
7643
7644                 /* reserve the misc vector */
7645                 vec = v_actual - 1;
7646
7647                 /* Scale vector usage down */
7648                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7649                 pf->num_vmdq_vsis = 1;
7650                 pf->num_vmdq_qps = 1;
7651                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7652
7653                 /* partition out the remaining vectors */
7654                 switch (vec) {
7655                 case 2:
7656                         pf->num_lan_msix = 1;
7657                         break;
7658                 case 3:
7659 #ifdef I40E_FCOE
7660                         /* give one vector to FCoE */
7661                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7662                                 pf->num_lan_msix = 1;
7663                                 pf->num_fcoe_msix = 1;
7664                         }
7665 #else
7666                         pf->num_lan_msix = 2;
7667 #endif
7668                         break;
7669                 default:
7670 #ifdef I40E_FCOE
7671                         /* give one vector to FCoE */
7672                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7673                                 pf->num_fcoe_msix = 1;
7674                                 vec--;
7675                         }
7676 #endif
7677                         /* give the rest to the PF */
7678                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7679                         break;
7680                 }
7681         }
7682
7683         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7684             (pf->num_vmdq_msix == 0)) {
7685                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7686                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7687         }
7688 #ifdef I40E_FCOE
7689
7690         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7691                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7692                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7693         }
7694 #endif
7695         return v_actual;
7696 }
7697
7698 /**
7699  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7700  * @vsi: the VSI being configured
7701  * @v_idx: index of the vector in the vsi struct
7702  *
7703  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7704  **/
7705 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7706 {
7707         struct i40e_q_vector *q_vector;
7708
7709         /* allocate q_vector */
7710         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7711         if (!q_vector)
7712                 return -ENOMEM;
7713
7714         q_vector->vsi = vsi;
7715         q_vector->v_idx = v_idx;
7716         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7717         if (vsi->netdev)
7718                 netif_napi_add(vsi->netdev, &q_vector->napi,
7719                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7720
7721         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7722         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7723
7724         /* tie q_vector and vsi together */
7725         vsi->q_vectors[v_idx] = q_vector;
7726
7727         return 0;
7728 }
7729
7730 /**
7731  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7732  * @vsi: the VSI being configured
7733  *
7734  * We allocate one q_vector per queue interrupt.  If allocation fails we
7735  * return -ENOMEM.
7736  **/
7737 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7738 {
7739         struct i40e_pf *pf = vsi->back;
7740         int v_idx, num_q_vectors;
7741         int err;
7742
7743         /* if not MSIX, give the one vector only to the LAN VSI */
7744         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7745                 num_q_vectors = vsi->num_q_vectors;
7746         else if (vsi == pf->vsi[pf->lan_vsi])
7747                 num_q_vectors = 1;
7748         else
7749                 return -EINVAL;
7750
7751         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7752                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7753                 if (err)
7754                         goto err_out;
7755         }
7756
7757         return 0;
7758
7759 err_out:
7760         while (v_idx--)
7761                 i40e_free_q_vector(vsi, v_idx);
7762
7763         return err;
7764 }
7765
7766 /**
7767  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7768  * @pf: board private structure to initialize
7769  **/
7770 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7771 {
7772         int vectors = 0;
7773         ssize_t size;
7774
7775         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7776                 vectors = i40e_init_msix(pf);
7777                 if (vectors < 0) {
7778                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7779 #ifdef I40E_FCOE
7780                                        I40E_FLAG_FCOE_ENABLED   |
7781 #endif
7782                                        I40E_FLAG_RSS_ENABLED    |
7783                                        I40E_FLAG_DCB_CAPABLE    |
7784                                        I40E_FLAG_SRIOV_ENABLED  |
7785                                        I40E_FLAG_FD_SB_ENABLED  |
7786                                        I40E_FLAG_FD_ATR_ENABLED |
7787                                        I40E_FLAG_VMDQ_ENABLED);
7788
7789                         /* rework the queue expectations without MSIX */
7790                         i40e_determine_queue_usage(pf);
7791                 }
7792         }
7793
7794         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7795             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7796                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7797                 vectors = pci_enable_msi(pf->pdev);
7798                 if (vectors < 0) {
7799                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7800                                  vectors);
7801                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7802                 }
7803                 vectors = 1;  /* one MSI or Legacy vector */
7804         }
7805
7806         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7807                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7808
7809         /* set up vector assignment tracking */
7810         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7811         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7812         if (!pf->irq_pile) {
7813                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7814                 return -ENOMEM;
7815         }
7816         pf->irq_pile->num_entries = vectors;
7817         pf->irq_pile->search_hint = 0;
7818
7819         /* track first vector for misc interrupts, ignore return */
7820         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7821
7822         return 0;
7823 }
7824
7825 /**
7826  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7827  * @pf: board private structure
7828  *
7829  * This sets up the handler for MSIX 0, which is used to manage the
7830  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7831  * when in MSI or Legacy interrupt mode.
7832  **/
7833 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7834 {
7835         struct i40e_hw *hw = &pf->hw;
7836         int err = 0;
7837
7838         /* Only request the irq if this is the first time through, and
7839          * not when we're rebuilding after a Reset
7840          */
7841         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7842                 err = request_irq(pf->msix_entries[0].vector,
7843                                   i40e_intr, 0, pf->int_name, pf);
7844                 if (err) {
7845                         dev_info(&pf->pdev->dev,
7846                                  "request_irq for %s failed: %d\n",
7847                                  pf->int_name, err);
7848                         return -EFAULT;
7849                 }
7850         }
7851
7852         i40e_enable_misc_int_causes(pf);
7853
7854         /* associate no queues to the misc vector */
7855         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7856         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7857
7858         i40e_flush(hw);
7859
7860         i40e_irq_dynamic_enable_icr0(pf);
7861
7862         return err;
7863 }
7864
7865 /**
7866  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7867  * @vsi: vsi structure
7868  * @seed: RSS hash seed
7869  **/
7870 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7871                               u8 *lut, u16 lut_size)
7872 {
7873         struct i40e_aqc_get_set_rss_key_data rss_key;
7874         struct i40e_pf *pf = vsi->back;
7875         struct i40e_hw *hw = &pf->hw;
7876         bool pf_lut = false;
7877         u8 *rss_lut;
7878         int ret, i;
7879
7880         memset(&rss_key, 0, sizeof(rss_key));
7881         memcpy(&rss_key, seed, sizeof(rss_key));
7882
7883         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7884         if (!rss_lut)
7885                 return -ENOMEM;
7886
7887         /* Populate the LUT with max no. of queues in round robin fashion */
7888         for (i = 0; i < vsi->rss_table_size; i++)
7889                 rss_lut[i] = i % vsi->rss_size;
7890
7891         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7892         if (ret) {
7893                 dev_info(&pf->pdev->dev,
7894                          "Cannot set RSS key, err %s aq_err %s\n",
7895                          i40e_stat_str(&pf->hw, ret),
7896                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7897                 goto config_rss_aq_out;
7898         }
7899
7900         if (vsi->type == I40E_VSI_MAIN)
7901                 pf_lut = true;
7902
7903         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7904                                   vsi->rss_table_size);
7905         if (ret)
7906                 dev_info(&pf->pdev->dev,
7907                          "Cannot set RSS lut, err %s aq_err %s\n",
7908                          i40e_stat_str(&pf->hw, ret),
7909                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7910
7911 config_rss_aq_out:
7912         kfree(rss_lut);
7913         return ret;
7914 }
7915
7916 /**
7917  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7918  * @vsi: VSI structure
7919  **/
7920 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7921 {
7922         u8 seed[I40E_HKEY_ARRAY_SIZE];
7923         struct i40e_pf *pf = vsi->back;
7924         u8 *lut;
7925         int ret;
7926
7927         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7928                 return 0;
7929
7930         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7931         if (!lut)
7932                 return -ENOMEM;
7933
7934         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7935         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7936         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7937         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7938         kfree(lut);
7939
7940         return ret;
7941 }
7942
7943 /**
7944  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7945  * @vsi: Pointer to vsi structure
7946  * @seed: RSS hash seed
7947  * @lut: Lookup table
7948  * @lut_size: Lookup table size
7949  *
7950  * Returns 0 on success, negative on failure
7951  **/
7952 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7953                                const u8 *lut, u16 lut_size)
7954 {
7955         struct i40e_pf *pf = vsi->back;
7956         struct i40e_hw *hw = &pf->hw;
7957         u8 i;
7958
7959         /* Fill out hash function seed */
7960         if (seed) {
7961                 u32 *seed_dw = (u32 *)seed;
7962
7963                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7964                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7965         }
7966
7967         if (lut) {
7968                 u32 *lut_dw = (u32 *)lut;
7969
7970                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7971                         return -EINVAL;
7972
7973                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7974                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7975         }
7976         i40e_flush(hw);
7977
7978         return 0;
7979 }
7980
7981 /**
7982  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7983  * @vsi: Pointer to VSI structure
7984  * @seed: Buffer to store the keys
7985  * @lut: Buffer to store the lookup table entries
7986  * @lut_size: Size of buffer to store the lookup table entries
7987  *
7988  * Returns 0 on success, negative on failure
7989  */
7990 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7991                             u8 *lut, u16 lut_size)
7992 {
7993         struct i40e_pf *pf = vsi->back;
7994         struct i40e_hw *hw = &pf->hw;
7995         u16 i;
7996
7997         if (seed) {
7998                 u32 *seed_dw = (u32 *)seed;
7999
8000                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8001                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
8002         }
8003         if (lut) {
8004                 u32 *lut_dw = (u32 *)lut;
8005
8006                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8007                         return -EINVAL;
8008                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8009                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8010         }
8011
8012         return 0;
8013 }
8014
8015 /**
8016  * i40e_config_rss - Configure RSS keys and lut
8017  * @vsi: Pointer to VSI structure
8018  * @seed: RSS hash seed
8019  * @lut: Lookup table
8020  * @lut_size: Lookup table size
8021  *
8022  * Returns 0 on success, negative on failure
8023  */
8024 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8025 {
8026         struct i40e_pf *pf = vsi->back;
8027
8028         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8029                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8030         else
8031                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8032 }
8033
8034 /**
8035  * i40e_get_rss - Get RSS keys and lut
8036  * @vsi: Pointer to VSI structure
8037  * @seed: Buffer to store the keys
8038  * @lut: Buffer to store the lookup table entries
8039  * lut_size: Size of buffer to store the lookup table entries
8040  *
8041  * Returns 0 on success, negative on failure
8042  */
8043 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8044 {
8045         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8046 }
8047
8048 /**
8049  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8050  * @pf: Pointer to board private structure
8051  * @lut: Lookup table
8052  * @rss_table_size: Lookup table size
8053  * @rss_size: Range of queue number for hashing
8054  */
8055 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8056                               u16 rss_table_size, u16 rss_size)
8057 {
8058         u16 i;
8059
8060         for (i = 0; i < rss_table_size; i++)
8061                 lut[i] = i % rss_size;
8062 }
8063
8064 /**
8065  * i40e_pf_config_rss - Prepare for RSS if used
8066  * @pf: board private structure
8067  **/
8068 static int i40e_pf_config_rss(struct i40e_pf *pf)
8069 {
8070         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8071         u8 seed[I40E_HKEY_ARRAY_SIZE];
8072         u8 *lut;
8073         struct i40e_hw *hw = &pf->hw;
8074         u32 reg_val;
8075         u64 hena;
8076         int ret;
8077
8078         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8079         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8080                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8081         hena |= i40e_pf_get_default_rss_hena(pf);
8082
8083         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8084         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8085
8086         /* Determine the RSS table size based on the hardware capabilities */
8087         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8088         reg_val = (pf->rss_table_size == 512) ?
8089                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8090                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8091         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8092
8093         /* Determine the RSS size of the VSI */
8094         if (!vsi->rss_size)
8095                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8096                                       vsi->num_queue_pairs);
8097
8098         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8099         if (!lut)
8100                 return -ENOMEM;
8101
8102         /* Use user configured lut if there is one, otherwise use default */
8103         if (vsi->rss_lut_user)
8104                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8105         else
8106                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8107
8108         /* Use user configured hash key if there is one, otherwise
8109          * use default.
8110          */
8111         if (vsi->rss_hkey_user)
8112                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8113         else
8114                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8115         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8116         kfree(lut);
8117
8118         return ret;
8119 }
8120
8121 /**
8122  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8123  * @pf: board private structure
8124  * @queue_count: the requested queue count for rss.
8125  *
8126  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8127  * count which may be different from the requested queue count.
8128  **/
8129 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8130 {
8131         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8132         int new_rss_size;
8133
8134         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8135                 return 0;
8136
8137         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8138
8139         if (queue_count != vsi->num_queue_pairs) {
8140                 vsi->req_queue_pairs = queue_count;
8141                 i40e_prep_for_reset(pf);
8142
8143                 pf->alloc_rss_size = new_rss_size;
8144
8145                 i40e_reset_and_rebuild(pf, true);
8146
8147                 /* Discard the user configured hash keys and lut, if less
8148                  * queues are enabled.
8149                  */
8150                 if (queue_count < vsi->rss_size) {
8151                         i40e_clear_rss_config_user(vsi);
8152                         dev_dbg(&pf->pdev->dev,
8153                                 "discard user configured hash keys and lut\n");
8154                 }
8155
8156                 /* Reset vsi->rss_size, as number of enabled queues changed */
8157                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8158                                       vsi->num_queue_pairs);
8159
8160                 i40e_pf_config_rss(pf);
8161         }
8162         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8163                  pf->alloc_rss_size, pf->rss_size_max);
8164         return pf->alloc_rss_size;
8165 }
8166
8167 /**
8168  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8169  * @pf: board private structure
8170  **/
8171 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8172 {
8173         i40e_status status;
8174         bool min_valid, max_valid;
8175         u32 max_bw, min_bw;
8176
8177         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8178                                            &min_valid, &max_valid);
8179
8180         if (!status) {
8181                 if (min_valid)
8182                         pf->npar_min_bw = min_bw;
8183                 if (max_valid)
8184                         pf->npar_max_bw = max_bw;
8185         }
8186
8187         return status;
8188 }
8189
8190 /**
8191  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8192  * @pf: board private structure
8193  **/
8194 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8195 {
8196         struct i40e_aqc_configure_partition_bw_data bw_data;
8197         i40e_status status;
8198
8199         /* Set the valid bit for this PF */
8200         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8201         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8202         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8203
8204         /* Set the new bandwidths */
8205         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8206
8207         return status;
8208 }
8209
8210 /**
8211  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8212  * @pf: board private structure
8213  **/
8214 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8215 {
8216         /* Commit temporary BW setting to permanent NVM image */
8217         enum i40e_admin_queue_err last_aq_status;
8218         i40e_status ret;
8219         u16 nvm_word;
8220
8221         if (pf->hw.partition_id != 1) {
8222                 dev_info(&pf->pdev->dev,
8223                          "Commit BW only works on partition 1! This is partition %d",
8224                          pf->hw.partition_id);
8225                 ret = I40E_NOT_SUPPORTED;
8226                 goto bw_commit_out;
8227         }
8228
8229         /* Acquire NVM for read access */
8230         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8231         last_aq_status = pf->hw.aq.asq_last_status;
8232         if (ret) {
8233                 dev_info(&pf->pdev->dev,
8234                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8235                          i40e_stat_str(&pf->hw, ret),
8236                          i40e_aq_str(&pf->hw, last_aq_status));
8237                 goto bw_commit_out;
8238         }
8239
8240         /* Read word 0x10 of NVM - SW compatibility word 1 */
8241         ret = i40e_aq_read_nvm(&pf->hw,
8242                                I40E_SR_NVM_CONTROL_WORD,
8243                                0x10, sizeof(nvm_word), &nvm_word,
8244                                false, NULL);
8245         /* Save off last admin queue command status before releasing
8246          * the NVM
8247          */
8248         last_aq_status = pf->hw.aq.asq_last_status;
8249         i40e_release_nvm(&pf->hw);
8250         if (ret) {
8251                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8252                          i40e_stat_str(&pf->hw, ret),
8253                          i40e_aq_str(&pf->hw, last_aq_status));
8254                 goto bw_commit_out;
8255         }
8256
8257         /* Wait a bit for NVM release to complete */
8258         msleep(50);
8259
8260         /* Acquire NVM for write access */
8261         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8262         last_aq_status = pf->hw.aq.asq_last_status;
8263         if (ret) {
8264                 dev_info(&pf->pdev->dev,
8265                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8266                          i40e_stat_str(&pf->hw, ret),
8267                          i40e_aq_str(&pf->hw, last_aq_status));
8268                 goto bw_commit_out;
8269         }
8270         /* Write it back out unchanged to initiate update NVM,
8271          * which will force a write of the shadow (alt) RAM to
8272          * the NVM - thus storing the bandwidth values permanently.
8273          */
8274         ret = i40e_aq_update_nvm(&pf->hw,
8275                                  I40E_SR_NVM_CONTROL_WORD,
8276                                  0x10, sizeof(nvm_word),
8277                                  &nvm_word, true, NULL);
8278         /* Save off last admin queue command status before releasing
8279          * the NVM
8280          */
8281         last_aq_status = pf->hw.aq.asq_last_status;
8282         i40e_release_nvm(&pf->hw);
8283         if (ret)
8284                 dev_info(&pf->pdev->dev,
8285                          "BW settings NOT SAVED, err %s aq_err %s\n",
8286                          i40e_stat_str(&pf->hw, ret),
8287                          i40e_aq_str(&pf->hw, last_aq_status));
8288 bw_commit_out:
8289
8290         return ret;
8291 }
8292
8293 /**
8294  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8295  * @pf: board private structure to initialize
8296  *
8297  * i40e_sw_init initializes the Adapter private data structure.
8298  * Fields are initialized based on PCI device information and
8299  * OS network device settings (MTU size).
8300  **/
8301 static int i40e_sw_init(struct i40e_pf *pf)
8302 {
8303         int err = 0;
8304         int size;
8305
8306         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8307                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8308         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8309         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8310                 if (I40E_DEBUG_USER & debug)
8311                         pf->hw.debug_mask = debug;
8312                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8313                                                 I40E_DEFAULT_MSG_ENABLE);
8314         }
8315
8316         /* Set default capability flags */
8317         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8318                     I40E_FLAG_MSI_ENABLED     |
8319                     I40E_FLAG_LINK_POLLING_ENABLED |
8320                     I40E_FLAG_MSIX_ENABLED;
8321
8322         if (iommu_present(&pci_bus_type))
8323                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8324         else
8325                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8326
8327         /* Set default ITR */
8328         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8329         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8330
8331         /* Depending on PF configurations, it is possible that the RSS
8332          * maximum might end up larger than the available queues
8333          */
8334         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8335         pf->alloc_rss_size = 1;
8336         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8337         pf->rss_size_max = min_t(int, pf->rss_size_max,
8338                                  pf->hw.func_caps.num_tx_qp);
8339         if (pf->hw.func_caps.rss) {
8340                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8341                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8342                                            num_online_cpus());
8343         }
8344
8345         /* MFP mode enabled */
8346         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8347                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8348                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8349                 if (i40e_get_npar_bw_setting(pf))
8350                         dev_warn(&pf->pdev->dev,
8351                                  "Could not get NPAR bw settings\n");
8352                 else
8353                         dev_info(&pf->pdev->dev,
8354                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8355                                  pf->npar_min_bw, pf->npar_max_bw);
8356         }
8357
8358         /* FW/NVM is not yet fixed in this regard */
8359         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8360             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8361                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8362                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8363                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8364                     pf->hw.num_partitions > 1)
8365                         dev_info(&pf->pdev->dev,
8366                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8367                 else
8368                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8369                 pf->fdir_pf_filter_count =
8370                                  pf->hw.func_caps.fd_filters_guaranteed;
8371                 pf->hw.fdir_shared_filter_count =
8372                                  pf->hw.func_caps.fd_filters_best_effort;
8373         }
8374
8375         if (pf->hw.func_caps.vmdq) {
8376                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8377                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8378                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8379         }
8380
8381 #ifdef I40E_FCOE
8382         i40e_init_pf_fcoe(pf);
8383
8384 #endif /* I40E_FCOE */
8385 #ifdef CONFIG_PCI_IOV
8386         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8387                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8388                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8389                 pf->num_req_vfs = min_t(int,
8390                                         pf->hw.func_caps.num_vfs,
8391                                         I40E_MAX_VF_COUNT);
8392         }
8393 #endif /* CONFIG_PCI_IOV */
8394         if (pf->hw.mac.type == I40E_MAC_X722) {
8395                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8396                              I40E_FLAG_128_QP_RSS_CAPABLE |
8397                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8398                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8399                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8400                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8401         }
8402         pf->eeprom_version = 0xDEAD;
8403         pf->lan_veb = I40E_NO_VEB;
8404         pf->lan_vsi = I40E_NO_VSI;
8405
8406         /* By default FW has this off for performance reasons */
8407         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8408
8409         /* set up queue assignment tracking */
8410         size = sizeof(struct i40e_lump_tracking)
8411                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8412         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8413         if (!pf->qp_pile) {
8414                 err = -ENOMEM;
8415                 goto sw_init_done;
8416         }
8417         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8418         pf->qp_pile->search_hint = 0;
8419
8420         pf->tx_timeout_recovery_level = 1;
8421
8422         mutex_init(&pf->switch_mutex);
8423
8424         /* If NPAR is enabled nudge the Tx scheduler */
8425         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8426                 i40e_set_npar_bw_setting(pf);
8427
8428 sw_init_done:
8429         return err;
8430 }
8431
8432 /**
8433  * i40e_set_ntuple - set the ntuple feature flag and take action
8434  * @pf: board private structure to initialize
8435  * @features: the feature set that the stack is suggesting
8436  *
8437  * returns a bool to indicate if reset needs to happen
8438  **/
8439 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8440 {
8441         bool need_reset = false;
8442
8443         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8444          * the state changed, we need to reset.
8445          */
8446         if (features & NETIF_F_NTUPLE) {
8447                 /* Enable filters and mark for reset */
8448                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8449                         need_reset = true;
8450                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8451         } else {
8452                 /* turn off filters, mark for reset and clear SW filter list */
8453                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8454                         need_reset = true;
8455                         i40e_fdir_filter_exit(pf);
8456                 }
8457                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8458                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8459                 /* reset fd counters */
8460                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8461                 pf->fdir_pf_active_filters = 0;
8462                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8463                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8464                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8465                 /* if ATR was auto disabled it can be re-enabled. */
8466                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8467                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8468                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8469         }
8470         return need_reset;
8471 }
8472
8473 /**
8474  * i40e_set_features - set the netdev feature flags
8475  * @netdev: ptr to the netdev being adjusted
8476  * @features: the feature set that the stack is suggesting
8477  **/
8478 static int i40e_set_features(struct net_device *netdev,
8479                              netdev_features_t features)
8480 {
8481         struct i40e_netdev_priv *np = netdev_priv(netdev);
8482         struct i40e_vsi *vsi = np->vsi;
8483         struct i40e_pf *pf = vsi->back;
8484         bool need_reset;
8485
8486         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8487                 i40e_vlan_stripping_enable(vsi);
8488         else
8489                 i40e_vlan_stripping_disable(vsi);
8490
8491         need_reset = i40e_set_ntuple(pf, features);
8492
8493         if (need_reset)
8494                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8495
8496         return 0;
8497 }
8498
8499 #if IS_ENABLED(CONFIG_VXLAN)
8500 /**
8501  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8502  * @pf: board private structure
8503  * @port: The UDP port to look up
8504  *
8505  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8506  **/
8507 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8508 {
8509         u8 i;
8510
8511         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8512                 if (pf->vxlan_ports[i] == port)
8513                         return i;
8514         }
8515
8516         return i;
8517 }
8518
8519 /**
8520  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8521  * @netdev: This physical port's netdev
8522  * @sa_family: Socket Family that VXLAN is notifying us about
8523  * @port: New UDP port number that VXLAN started listening to
8524  **/
8525 static void i40e_add_vxlan_port(struct net_device *netdev,
8526                                 sa_family_t sa_family, __be16 port)
8527 {
8528         struct i40e_netdev_priv *np = netdev_priv(netdev);
8529         struct i40e_vsi *vsi = np->vsi;
8530         struct i40e_pf *pf = vsi->back;
8531         u8 next_idx;
8532         u8 idx;
8533
8534         if (sa_family == AF_INET6)
8535                 return;
8536
8537         idx = i40e_get_vxlan_port_idx(pf, port);
8538
8539         /* Check if port already exists */
8540         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8541                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8542                             ntohs(port));
8543                 return;
8544         }
8545
8546         /* Now check if there is space to add the new port */
8547         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8548
8549         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8550                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8551                             ntohs(port));
8552                 return;
8553         }
8554
8555         /* New port: add it and mark its index in the bitmap */
8556         pf->vxlan_ports[next_idx] = port;
8557         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8558         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8559 }
8560
8561 /**
8562  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8563  * @netdev: This physical port's netdev
8564  * @sa_family: Socket Family that VXLAN is notifying us about
8565  * @port: UDP port number that VXLAN stopped listening to
8566  **/
8567 static void i40e_del_vxlan_port(struct net_device *netdev,
8568                                 sa_family_t sa_family, __be16 port)
8569 {
8570         struct i40e_netdev_priv *np = netdev_priv(netdev);
8571         struct i40e_vsi *vsi = np->vsi;
8572         struct i40e_pf *pf = vsi->back;
8573         u8 idx;
8574
8575         if (sa_family == AF_INET6)
8576                 return;
8577
8578         idx = i40e_get_vxlan_port_idx(pf, port);
8579
8580         /* Check if port already exists */
8581         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8582                 /* if port exists, set it to 0 (mark for deletion)
8583                  * and make it pending
8584                  */
8585                 pf->vxlan_ports[idx] = 0;
8586                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8587                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8588         } else {
8589                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8590                             ntohs(port));
8591         }
8592 }
8593
8594 #endif
8595 static int i40e_get_phys_port_id(struct net_device *netdev,
8596                                  struct netdev_phys_item_id *ppid)
8597 {
8598         struct i40e_netdev_priv *np = netdev_priv(netdev);
8599         struct i40e_pf *pf = np->vsi->back;
8600         struct i40e_hw *hw = &pf->hw;
8601
8602         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8603                 return -EOPNOTSUPP;
8604
8605         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8606         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8607
8608         return 0;
8609 }
8610
8611 /**
8612  * i40e_ndo_fdb_add - add an entry to the hardware database
8613  * @ndm: the input from the stack
8614  * @tb: pointer to array of nladdr (unused)
8615  * @dev: the net device pointer
8616  * @addr: the MAC address entry being added
8617  * @flags: instructions from stack about fdb operation
8618  */
8619 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8620                             struct net_device *dev,
8621                             const unsigned char *addr, u16 vid,
8622                             u16 flags)
8623 {
8624         struct i40e_netdev_priv *np = netdev_priv(dev);
8625         struct i40e_pf *pf = np->vsi->back;
8626         int err = 0;
8627
8628         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8629                 return -EOPNOTSUPP;
8630
8631         if (vid) {
8632                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8633                 return -EINVAL;
8634         }
8635
8636         /* Hardware does not support aging addresses so if a
8637          * ndm_state is given only allow permanent addresses
8638          */
8639         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8640                 netdev_info(dev, "FDB only supports static addresses\n");
8641                 return -EINVAL;
8642         }
8643
8644         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8645                 err = dev_uc_add_excl(dev, addr);
8646         else if (is_multicast_ether_addr(addr))
8647                 err = dev_mc_add_excl(dev, addr);
8648         else
8649                 err = -EINVAL;
8650
8651         /* Only return duplicate errors if NLM_F_EXCL is set */
8652         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8653                 err = 0;
8654
8655         return err;
8656 }
8657
8658 /**
8659  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8660  * @dev: the netdev being configured
8661  * @nlh: RTNL message
8662  *
8663  * Inserts a new hardware bridge if not already created and
8664  * enables the bridging mode requested (VEB or VEPA). If the
8665  * hardware bridge has already been inserted and the request
8666  * is to change the mode then that requires a PF reset to
8667  * allow rebuild of the components with required hardware
8668  * bridge mode enabled.
8669  **/
8670 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8671                                    struct nlmsghdr *nlh,
8672                                    u16 flags)
8673 {
8674         struct i40e_netdev_priv *np = netdev_priv(dev);
8675         struct i40e_vsi *vsi = np->vsi;
8676         struct i40e_pf *pf = vsi->back;
8677         struct i40e_veb *veb = NULL;
8678         struct nlattr *attr, *br_spec;
8679         int i, rem;
8680
8681         /* Only for PF VSI for now */
8682         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8683                 return -EOPNOTSUPP;
8684
8685         /* Find the HW bridge for PF VSI */
8686         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8687                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8688                         veb = pf->veb[i];
8689         }
8690
8691         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8692
8693         nla_for_each_nested(attr, br_spec, rem) {
8694                 __u16 mode;
8695
8696                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8697                         continue;
8698
8699                 mode = nla_get_u16(attr);
8700                 if ((mode != BRIDGE_MODE_VEPA) &&
8701                     (mode != BRIDGE_MODE_VEB))
8702                         return -EINVAL;
8703
8704                 /* Insert a new HW bridge */
8705                 if (!veb) {
8706                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8707                                              vsi->tc_config.enabled_tc);
8708                         if (veb) {
8709                                 veb->bridge_mode = mode;
8710                                 i40e_config_bridge_mode(veb);
8711                         } else {
8712                                 /* No Bridge HW offload available */
8713                                 return -ENOENT;
8714                         }
8715                         break;
8716                 } else if (mode != veb->bridge_mode) {
8717                         /* Existing HW bridge but different mode needs reset */
8718                         veb->bridge_mode = mode;
8719                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8720                         if (mode == BRIDGE_MODE_VEB)
8721                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8722                         else
8723                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8724                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8725                         break;
8726                 }
8727         }
8728
8729         return 0;
8730 }
8731
8732 /**
8733  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8734  * @skb: skb buff
8735  * @pid: process id
8736  * @seq: RTNL message seq #
8737  * @dev: the netdev being configured
8738  * @filter_mask: unused
8739  * @nlflags: netlink flags passed in
8740  *
8741  * Return the mode in which the hardware bridge is operating in
8742  * i.e VEB or VEPA.
8743  **/
8744 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8745                                    struct net_device *dev,
8746                                    u32 __always_unused filter_mask,
8747                                    int nlflags)
8748 {
8749         struct i40e_netdev_priv *np = netdev_priv(dev);
8750         struct i40e_vsi *vsi = np->vsi;
8751         struct i40e_pf *pf = vsi->back;
8752         struct i40e_veb *veb = NULL;
8753         int i;
8754
8755         /* Only for PF VSI for now */
8756         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8757                 return -EOPNOTSUPP;
8758
8759         /* Find the HW bridge for the PF VSI */
8760         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8761                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8762                         veb = pf->veb[i];
8763         }
8764
8765         if (!veb)
8766                 return 0;
8767
8768         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8769                                        nlflags, 0, 0, filter_mask, NULL);
8770 }
8771
8772 #define I40E_MAX_TUNNEL_HDR_LEN 80
8773 /**
8774  * i40e_features_check - Validate encapsulated packet conforms to limits
8775  * @skb: skb buff
8776  * @dev: This physical port's netdev
8777  * @features: Offload features that the stack believes apply
8778  **/
8779 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8780                                              struct net_device *dev,
8781                                              netdev_features_t features)
8782 {
8783         if (skb->encapsulation &&
8784             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8785              I40E_MAX_TUNNEL_HDR_LEN))
8786                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8787
8788         return features;
8789 }
8790
8791 static const struct net_device_ops i40e_netdev_ops = {
8792         .ndo_open               = i40e_open,
8793         .ndo_stop               = i40e_close,
8794         .ndo_start_xmit         = i40e_lan_xmit_frame,
8795         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8796         .ndo_set_rx_mode        = i40e_set_rx_mode,
8797         .ndo_validate_addr      = eth_validate_addr,
8798         .ndo_set_mac_address    = i40e_set_mac,
8799         .ndo_change_mtu         = i40e_change_mtu,
8800         .ndo_do_ioctl           = i40e_ioctl,
8801         .ndo_tx_timeout         = i40e_tx_timeout,
8802         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8803         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8804 #ifdef CONFIG_NET_POLL_CONTROLLER
8805         .ndo_poll_controller    = i40e_netpoll,
8806 #endif
8807         .ndo_setup_tc           = i40e_setup_tc,
8808 #ifdef I40E_FCOE
8809         .ndo_fcoe_enable        = i40e_fcoe_enable,
8810         .ndo_fcoe_disable       = i40e_fcoe_disable,
8811 #endif
8812         .ndo_set_features       = i40e_set_features,
8813         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8814         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8815         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8816         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8817         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8818         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8819 #if IS_ENABLED(CONFIG_VXLAN)
8820         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8821         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8822 #endif
8823         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8824         .ndo_fdb_add            = i40e_ndo_fdb_add,
8825         .ndo_features_check     = i40e_features_check,
8826         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8827         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8828 };
8829
8830 /**
8831  * i40e_config_netdev - Setup the netdev flags
8832  * @vsi: the VSI being configured
8833  *
8834  * Returns 0 on success, negative value on failure
8835  **/
8836 static int i40e_config_netdev(struct i40e_vsi *vsi)
8837 {
8838         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8839         struct i40e_pf *pf = vsi->back;
8840         struct i40e_hw *hw = &pf->hw;
8841         struct i40e_netdev_priv *np;
8842         struct net_device *netdev;
8843         u8 mac_addr[ETH_ALEN];
8844         int etherdev_size;
8845
8846         etherdev_size = sizeof(struct i40e_netdev_priv);
8847         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8848         if (!netdev)
8849                 return -ENOMEM;
8850
8851         vsi->netdev = netdev;
8852         np = netdev_priv(netdev);
8853         np->vsi = vsi;
8854
8855         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8856                                   NETIF_F_GSO_UDP_TUNNEL |
8857                                   NETIF_F_GSO_GRE        |
8858                                   NETIF_F_TSO;
8859
8860         netdev->features = NETIF_F_SG                  |
8861                            NETIF_F_IP_CSUM             |
8862                            NETIF_F_SCTP_CSUM           |
8863                            NETIF_F_HIGHDMA             |
8864                            NETIF_F_GSO_UDP_TUNNEL      |
8865                            NETIF_F_GSO_GRE             |
8866                            NETIF_F_HW_VLAN_CTAG_TX     |
8867                            NETIF_F_HW_VLAN_CTAG_RX     |
8868                            NETIF_F_HW_VLAN_CTAG_FILTER |
8869                            NETIF_F_IPV6_CSUM           |
8870                            NETIF_F_TSO                 |
8871                            NETIF_F_TSO_ECN             |
8872                            NETIF_F_TSO6                |
8873                            NETIF_F_RXCSUM              |
8874                            NETIF_F_RXHASH              |
8875                            0;
8876
8877         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8878                 netdev->features |= NETIF_F_NTUPLE;
8879
8880         /* copy netdev features into list of user selectable features */
8881         netdev->hw_features |= netdev->features;
8882
8883         if (vsi->type == I40E_VSI_MAIN) {
8884                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8885                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8886                 /* The following steps are necessary to prevent reception
8887                  * of tagged packets - some older NVM configurations load a
8888                  * default a MAC-VLAN filter that accepts any tagged packet
8889                  * which must be replaced by a normal filter.
8890                  */
8891                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8892                         spin_lock_bh(&vsi->mac_filter_list_lock);
8893                         i40e_add_filter(vsi, mac_addr,
8894                                         I40E_VLAN_ANY, false, true);
8895                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8896                 }
8897         } else {
8898                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8899                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8900                          pf->vsi[pf->lan_vsi]->netdev->name);
8901                 random_ether_addr(mac_addr);
8902
8903                 spin_lock_bh(&vsi->mac_filter_list_lock);
8904                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8905                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8906         }
8907
8908         spin_lock_bh(&vsi->mac_filter_list_lock);
8909         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8910         spin_unlock_bh(&vsi->mac_filter_list_lock);
8911
8912         ether_addr_copy(netdev->dev_addr, mac_addr);
8913         ether_addr_copy(netdev->perm_addr, mac_addr);
8914         /* vlan gets same features (except vlan offload)
8915          * after any tweaks for specific VSI types
8916          */
8917         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8918                                                      NETIF_F_HW_VLAN_CTAG_RX |
8919                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8920         netdev->priv_flags |= IFF_UNICAST_FLT;
8921         netdev->priv_flags |= IFF_SUPP_NOFCS;
8922         /* Setup netdev TC information */
8923         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8924
8925         netdev->netdev_ops = &i40e_netdev_ops;
8926         netdev->watchdog_timeo = 5 * HZ;
8927         i40e_set_ethtool_ops(netdev);
8928 #ifdef I40E_FCOE
8929         i40e_fcoe_config_netdev(netdev, vsi);
8930 #endif
8931
8932         return 0;
8933 }
8934
8935 /**
8936  * i40e_vsi_delete - Delete a VSI from the switch
8937  * @vsi: the VSI being removed
8938  *
8939  * Returns 0 on success, negative value on failure
8940  **/
8941 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8942 {
8943         /* remove default VSI is not allowed */
8944         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8945                 return;
8946
8947         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8948 }
8949
8950 /**
8951  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8952  * @vsi: the VSI being queried
8953  *
8954  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8955  **/
8956 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8957 {
8958         struct i40e_veb *veb;
8959         struct i40e_pf *pf = vsi->back;
8960
8961         /* Uplink is not a bridge so default to VEB */
8962         if (vsi->veb_idx == I40E_NO_VEB)
8963                 return 1;
8964
8965         veb = pf->veb[vsi->veb_idx];
8966         if (!veb) {
8967                 dev_info(&pf->pdev->dev,
8968                          "There is no veb associated with the bridge\n");
8969                 return -ENOENT;
8970         }
8971
8972         /* Uplink is a bridge in VEPA mode */
8973         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8974                 return 0;
8975         } else {
8976                 /* Uplink is a bridge in VEB mode */
8977                 return 1;
8978         }
8979
8980         /* VEPA is now default bridge, so return 0 */
8981         return 0;
8982 }
8983
8984 /**
8985  * i40e_add_vsi - Add a VSI to the switch
8986  * @vsi: the VSI being configured
8987  *
8988  * This initializes a VSI context depending on the VSI type to be added and
8989  * passes it down to the add_vsi aq command.
8990  **/
8991 static int i40e_add_vsi(struct i40e_vsi *vsi)
8992 {
8993         int ret = -ENODEV;
8994         u8 laa_macaddr[ETH_ALEN];
8995         bool found_laa_mac_filter = false;
8996         struct i40e_pf *pf = vsi->back;
8997         struct i40e_hw *hw = &pf->hw;
8998         struct i40e_vsi_context ctxt;
8999         struct i40e_mac_filter *f, *ftmp;
9000
9001         u8 enabled_tc = 0x1; /* TC0 enabled */
9002         int f_count = 0;
9003
9004         memset(&ctxt, 0, sizeof(ctxt));
9005         switch (vsi->type) {
9006         case I40E_VSI_MAIN:
9007                 /* The PF's main VSI is already setup as part of the
9008                  * device initialization, so we'll not bother with
9009                  * the add_vsi call, but we will retrieve the current
9010                  * VSI context.
9011                  */
9012                 ctxt.seid = pf->main_vsi_seid;
9013                 ctxt.pf_num = pf->hw.pf_id;
9014                 ctxt.vf_num = 0;
9015                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9016                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9017                 if (ret) {
9018                         dev_info(&pf->pdev->dev,
9019                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9020                                  i40e_stat_str(&pf->hw, ret),
9021                                  i40e_aq_str(&pf->hw,
9022                                              pf->hw.aq.asq_last_status));
9023                         return -ENOENT;
9024                 }
9025                 vsi->info = ctxt.info;
9026                 vsi->info.valid_sections = 0;
9027
9028                 vsi->seid = ctxt.seid;
9029                 vsi->id = ctxt.vsi_number;
9030
9031                 enabled_tc = i40e_pf_get_tc_map(pf);
9032
9033                 /* MFP mode setup queue map and update VSI */
9034                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9035                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9036                         memset(&ctxt, 0, sizeof(ctxt));
9037                         ctxt.seid = pf->main_vsi_seid;
9038                         ctxt.pf_num = pf->hw.pf_id;
9039                         ctxt.vf_num = 0;
9040                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9041                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9042                         if (ret) {
9043                                 dev_info(&pf->pdev->dev,
9044                                          "update vsi failed, err %s aq_err %s\n",
9045                                          i40e_stat_str(&pf->hw, ret),
9046                                          i40e_aq_str(&pf->hw,
9047                                                     pf->hw.aq.asq_last_status));
9048                                 ret = -ENOENT;
9049                                 goto err;
9050                         }
9051                         /* update the local VSI info queue map */
9052                         i40e_vsi_update_queue_map(vsi, &ctxt);
9053                         vsi->info.valid_sections = 0;
9054                 } else {
9055                         /* Default/Main VSI is only enabled for TC0
9056                          * reconfigure it to enable all TCs that are
9057                          * available on the port in SFP mode.
9058                          * For MFP case the iSCSI PF would use this
9059                          * flow to enable LAN+iSCSI TC.
9060                          */
9061                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9062                         if (ret) {
9063                                 dev_info(&pf->pdev->dev,
9064                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9065                                          enabled_tc,
9066                                          i40e_stat_str(&pf->hw, ret),
9067                                          i40e_aq_str(&pf->hw,
9068                                                     pf->hw.aq.asq_last_status));
9069                                 ret = -ENOENT;
9070                         }
9071                 }
9072                 break;
9073
9074         case I40E_VSI_FDIR:
9075                 ctxt.pf_num = hw->pf_id;
9076                 ctxt.vf_num = 0;
9077                 ctxt.uplink_seid = vsi->uplink_seid;
9078                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9079                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9080                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9081                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9082                         ctxt.info.valid_sections |=
9083                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9084                         ctxt.info.switch_id =
9085                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9086                 }
9087                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9088                 break;
9089
9090         case I40E_VSI_VMDQ2:
9091                 ctxt.pf_num = hw->pf_id;
9092                 ctxt.vf_num = 0;
9093                 ctxt.uplink_seid = vsi->uplink_seid;
9094                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9095                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9096
9097                 /* This VSI is connected to VEB so the switch_id
9098                  * should be set to zero by default.
9099                  */
9100                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9101                         ctxt.info.valid_sections |=
9102                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9103                         ctxt.info.switch_id =
9104                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9105                 }
9106
9107                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9108                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9109                 break;
9110
9111         case I40E_VSI_SRIOV:
9112                 ctxt.pf_num = hw->pf_id;
9113                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9114                 ctxt.uplink_seid = vsi->uplink_seid;
9115                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9116                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9117
9118                 /* This VSI is connected to VEB so the switch_id
9119                  * should be set to zero by default.
9120                  */
9121                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9122                         ctxt.info.valid_sections |=
9123                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9124                         ctxt.info.switch_id =
9125                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9126                 }
9127
9128                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9129                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9130                 if (pf->vf[vsi->vf_id].spoofchk) {
9131                         ctxt.info.valid_sections |=
9132                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9133                         ctxt.info.sec_flags |=
9134                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9135                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9136                 }
9137                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9138                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9139                 break;
9140
9141 #ifdef I40E_FCOE
9142         case I40E_VSI_FCOE:
9143                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9144                 if (ret) {
9145                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9146                         return ret;
9147                 }
9148                 break;
9149
9150 #endif /* I40E_FCOE */
9151         default:
9152                 return -ENODEV;
9153         }
9154
9155         if (vsi->type != I40E_VSI_MAIN) {
9156                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9157                 if (ret) {
9158                         dev_info(&vsi->back->pdev->dev,
9159                                  "add vsi failed, err %s aq_err %s\n",
9160                                  i40e_stat_str(&pf->hw, ret),
9161                                  i40e_aq_str(&pf->hw,
9162                                              pf->hw.aq.asq_last_status));
9163                         ret = -ENOENT;
9164                         goto err;
9165                 }
9166                 vsi->info = ctxt.info;
9167                 vsi->info.valid_sections = 0;
9168                 vsi->seid = ctxt.seid;
9169                 vsi->id = ctxt.vsi_number;
9170         }
9171
9172         spin_lock_bh(&vsi->mac_filter_list_lock);
9173         /* If macvlan filters already exist, force them to get loaded */
9174         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9175                 f->changed = true;
9176                 f_count++;
9177
9178                 /* Expected to have only one MAC filter entry for LAA in list */
9179                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9180                         ether_addr_copy(laa_macaddr, f->macaddr);
9181                         found_laa_mac_filter = true;
9182                 }
9183         }
9184         spin_unlock_bh(&vsi->mac_filter_list_lock);
9185
9186         if (found_laa_mac_filter) {
9187                 struct i40e_aqc_remove_macvlan_element_data element;
9188
9189                 memset(&element, 0, sizeof(element));
9190                 ether_addr_copy(element.mac_addr, laa_macaddr);
9191                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9192                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9193                                              &element, 1, NULL);
9194                 if (ret) {
9195                         /* some older FW has a different default */
9196                         element.flags |=
9197                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9198                         i40e_aq_remove_macvlan(hw, vsi->seid,
9199                                                &element, 1, NULL);
9200                 }
9201
9202                 i40e_aq_mac_address_write(hw,
9203                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9204                                           laa_macaddr, NULL);
9205         }
9206
9207         if (f_count) {
9208                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9209                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9210         }
9211
9212         /* Update VSI BW information */
9213         ret = i40e_vsi_get_bw_info(vsi);
9214         if (ret) {
9215                 dev_info(&pf->pdev->dev,
9216                          "couldn't get vsi bw info, err %s aq_err %s\n",
9217                          i40e_stat_str(&pf->hw, ret),
9218                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9219                 /* VSI is already added so not tearing that up */
9220                 ret = 0;
9221         }
9222
9223 err:
9224         return ret;
9225 }
9226
9227 /**
9228  * i40e_vsi_release - Delete a VSI and free its resources
9229  * @vsi: the VSI being removed
9230  *
9231  * Returns 0 on success or < 0 on error
9232  **/
9233 int i40e_vsi_release(struct i40e_vsi *vsi)
9234 {
9235         struct i40e_mac_filter *f, *ftmp;
9236         struct i40e_veb *veb = NULL;
9237         struct i40e_pf *pf;
9238         u16 uplink_seid;
9239         int i, n;
9240
9241         pf = vsi->back;
9242
9243         /* release of a VEB-owner or last VSI is not allowed */
9244         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9245                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9246                          vsi->seid, vsi->uplink_seid);
9247                 return -ENODEV;
9248         }
9249         if (vsi == pf->vsi[pf->lan_vsi] &&
9250             !test_bit(__I40E_DOWN, &pf->state)) {
9251                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9252                 return -ENODEV;
9253         }
9254
9255         uplink_seid = vsi->uplink_seid;
9256         if (vsi->type != I40E_VSI_SRIOV) {
9257                 if (vsi->netdev_registered) {
9258                         vsi->netdev_registered = false;
9259                         if (vsi->netdev) {
9260                                 /* results in a call to i40e_close() */
9261                                 unregister_netdev(vsi->netdev);
9262                         }
9263                 } else {
9264                         i40e_vsi_close(vsi);
9265                 }
9266                 i40e_vsi_disable_irq(vsi);
9267         }
9268
9269         spin_lock_bh(&vsi->mac_filter_list_lock);
9270         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9271                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9272                                 f->is_vf, f->is_netdev);
9273         spin_unlock_bh(&vsi->mac_filter_list_lock);
9274
9275         i40e_sync_vsi_filters(vsi);
9276
9277         i40e_vsi_delete(vsi);
9278         i40e_vsi_free_q_vectors(vsi);
9279         if (vsi->netdev) {
9280                 free_netdev(vsi->netdev);
9281                 vsi->netdev = NULL;
9282         }
9283         i40e_vsi_clear_rings(vsi);
9284         i40e_vsi_clear(vsi);
9285
9286         /* If this was the last thing on the VEB, except for the
9287          * controlling VSI, remove the VEB, which puts the controlling
9288          * VSI onto the next level down in the switch.
9289          *
9290          * Well, okay, there's one more exception here: don't remove
9291          * the orphan VEBs yet.  We'll wait for an explicit remove request
9292          * from up the network stack.
9293          */
9294         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9295                 if (pf->vsi[i] &&
9296                     pf->vsi[i]->uplink_seid == uplink_seid &&
9297                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9298                         n++;      /* count the VSIs */
9299                 }
9300         }
9301         for (i = 0; i < I40E_MAX_VEB; i++) {
9302                 if (!pf->veb[i])
9303                         continue;
9304                 if (pf->veb[i]->uplink_seid == uplink_seid)
9305                         n++;     /* count the VEBs */
9306                 if (pf->veb[i]->seid == uplink_seid)
9307                         veb = pf->veb[i];
9308         }
9309         if (n == 0 && veb && veb->uplink_seid != 0)
9310                 i40e_veb_release(veb);
9311
9312         return 0;
9313 }
9314
9315 /**
9316  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9317  * @vsi: ptr to the VSI
9318  *
9319  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9320  * corresponding SW VSI structure and initializes num_queue_pairs for the
9321  * newly allocated VSI.
9322  *
9323  * Returns 0 on success or negative on failure
9324  **/
9325 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9326 {
9327         int ret = -ENOENT;
9328         struct i40e_pf *pf = vsi->back;
9329
9330         if (vsi->q_vectors[0]) {
9331                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9332                          vsi->seid);
9333                 return -EEXIST;
9334         }
9335
9336         if (vsi->base_vector) {
9337                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9338                          vsi->seid, vsi->base_vector);
9339                 return -EEXIST;
9340         }
9341
9342         ret = i40e_vsi_alloc_q_vectors(vsi);
9343         if (ret) {
9344                 dev_info(&pf->pdev->dev,
9345                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9346                          vsi->num_q_vectors, vsi->seid, ret);
9347                 vsi->num_q_vectors = 0;
9348                 goto vector_setup_out;
9349         }
9350
9351         /* In Legacy mode, we do not have to get any other vector since we
9352          * piggyback on the misc/ICR0 for queue interrupts.
9353         */
9354         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9355                 return ret;
9356         if (vsi->num_q_vectors)
9357                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9358                                                  vsi->num_q_vectors, vsi->idx);
9359         if (vsi->base_vector < 0) {
9360                 dev_info(&pf->pdev->dev,
9361                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9362                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9363                 i40e_vsi_free_q_vectors(vsi);
9364                 ret = -ENOENT;
9365                 goto vector_setup_out;
9366         }
9367
9368 vector_setup_out:
9369         return ret;
9370 }
9371
9372 /**
9373  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9374  * @vsi: pointer to the vsi.
9375  *
9376  * This re-allocates a vsi's queue resources.
9377  *
9378  * Returns pointer to the successfully allocated and configured VSI sw struct
9379  * on success, otherwise returns NULL on failure.
9380  **/
9381 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9382 {
9383         struct i40e_pf *pf = vsi->back;
9384         u8 enabled_tc;
9385         int ret;
9386
9387         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9388         i40e_vsi_clear_rings(vsi);
9389
9390         i40e_vsi_free_arrays(vsi, false);
9391         i40e_set_num_rings_in_vsi(vsi);
9392         ret = i40e_vsi_alloc_arrays(vsi, false);
9393         if (ret)
9394                 goto err_vsi;
9395
9396         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9397         if (ret < 0) {
9398                 dev_info(&pf->pdev->dev,
9399                          "failed to get tracking for %d queues for VSI %d err %d\n",
9400                          vsi->alloc_queue_pairs, vsi->seid, ret);
9401                 goto err_vsi;
9402         }
9403         vsi->base_queue = ret;
9404
9405         /* Update the FW view of the VSI. Force a reset of TC and queue
9406          * layout configurations.
9407          */
9408         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9409         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9410         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9411         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9412
9413         /* assign it some queues */
9414         ret = i40e_alloc_rings(vsi);
9415         if (ret)
9416                 goto err_rings;
9417
9418         /* map all of the rings to the q_vectors */
9419         i40e_vsi_map_rings_to_vectors(vsi);
9420         return vsi;
9421
9422 err_rings:
9423         i40e_vsi_free_q_vectors(vsi);
9424         if (vsi->netdev_registered) {
9425                 vsi->netdev_registered = false;
9426                 unregister_netdev(vsi->netdev);
9427                 free_netdev(vsi->netdev);
9428                 vsi->netdev = NULL;
9429         }
9430         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9431 err_vsi:
9432         i40e_vsi_clear(vsi);
9433         return NULL;
9434 }
9435
9436 /**
9437  * i40e_vsi_setup - Set up a VSI by a given type
9438  * @pf: board private structure
9439  * @type: VSI type
9440  * @uplink_seid: the switch element to link to
9441  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9442  *
9443  * This allocates the sw VSI structure and its queue resources, then add a VSI
9444  * to the identified VEB.
9445  *
9446  * Returns pointer to the successfully allocated and configure VSI sw struct on
9447  * success, otherwise returns NULL on failure.
9448  **/
9449 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9450                                 u16 uplink_seid, u32 param1)
9451 {
9452         struct i40e_vsi *vsi = NULL;
9453         struct i40e_veb *veb = NULL;
9454         int ret, i;
9455         int v_idx;
9456
9457         /* The requested uplink_seid must be either
9458          *     - the PF's port seid
9459          *              no VEB is needed because this is the PF
9460          *              or this is a Flow Director special case VSI
9461          *     - seid of an existing VEB
9462          *     - seid of a VSI that owns an existing VEB
9463          *     - seid of a VSI that doesn't own a VEB
9464          *              a new VEB is created and the VSI becomes the owner
9465          *     - seid of the PF VSI, which is what creates the first VEB
9466          *              this is a special case of the previous
9467          *
9468          * Find which uplink_seid we were given and create a new VEB if needed
9469          */
9470         for (i = 0; i < I40E_MAX_VEB; i++) {
9471                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9472                         veb = pf->veb[i];
9473                         break;
9474                 }
9475         }
9476
9477         if (!veb && uplink_seid != pf->mac_seid) {
9478
9479                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9480                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9481                                 vsi = pf->vsi[i];
9482                                 break;
9483                         }
9484                 }
9485                 if (!vsi) {
9486                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9487                                  uplink_seid);
9488                         return NULL;
9489                 }
9490
9491                 if (vsi->uplink_seid == pf->mac_seid)
9492                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9493                                              vsi->tc_config.enabled_tc);
9494                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9495                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9496                                              vsi->tc_config.enabled_tc);
9497                 if (veb) {
9498                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9499                                 dev_info(&vsi->back->pdev->dev,
9500                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9501                                 return NULL;
9502                         }
9503                         /* We come up by default in VEPA mode if SRIOV is not
9504                          * already enabled, in which case we can't force VEPA
9505                          * mode.
9506                          */
9507                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9508                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9509                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9510                         }
9511                         i40e_config_bridge_mode(veb);
9512                 }
9513                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9514                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9515                                 veb = pf->veb[i];
9516                 }
9517                 if (!veb) {
9518                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9519                         return NULL;
9520                 }
9521
9522                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9523                 uplink_seid = veb->seid;
9524         }
9525
9526         /* get vsi sw struct */
9527         v_idx = i40e_vsi_mem_alloc(pf, type);
9528         if (v_idx < 0)
9529                 goto err_alloc;
9530         vsi = pf->vsi[v_idx];
9531         if (!vsi)
9532                 goto err_alloc;
9533         vsi->type = type;
9534         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9535
9536         if (type == I40E_VSI_MAIN)
9537                 pf->lan_vsi = v_idx;
9538         else if (type == I40E_VSI_SRIOV)
9539                 vsi->vf_id = param1;
9540         /* assign it some queues */
9541         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9542                                 vsi->idx);
9543         if (ret < 0) {
9544                 dev_info(&pf->pdev->dev,
9545                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9546                          vsi->alloc_queue_pairs, vsi->seid, ret);
9547                 goto err_vsi;
9548         }
9549         vsi->base_queue = ret;
9550
9551         /* get a VSI from the hardware */
9552         vsi->uplink_seid = uplink_seid;
9553         ret = i40e_add_vsi(vsi);
9554         if (ret)
9555                 goto err_vsi;
9556
9557         switch (vsi->type) {
9558         /* setup the netdev if needed */
9559         case I40E_VSI_MAIN:
9560         case I40E_VSI_VMDQ2:
9561         case I40E_VSI_FCOE:
9562                 ret = i40e_config_netdev(vsi);
9563                 if (ret)
9564                         goto err_netdev;
9565                 ret = register_netdev(vsi->netdev);
9566                 if (ret)
9567                         goto err_netdev;
9568                 vsi->netdev_registered = true;
9569                 netif_carrier_off(vsi->netdev);
9570 #ifdef CONFIG_I40E_DCB
9571                 /* Setup DCB netlink interface */
9572                 i40e_dcbnl_setup(vsi);
9573 #endif /* CONFIG_I40E_DCB */
9574                 /* fall through */
9575
9576         case I40E_VSI_FDIR:
9577                 /* set up vectors and rings if needed */
9578                 ret = i40e_vsi_setup_vectors(vsi);
9579                 if (ret)
9580                         goto err_msix;
9581
9582                 ret = i40e_alloc_rings(vsi);
9583                 if (ret)
9584                         goto err_rings;
9585
9586                 /* map all of the rings to the q_vectors */
9587                 i40e_vsi_map_rings_to_vectors(vsi);
9588
9589                 i40e_vsi_reset_stats(vsi);
9590                 break;
9591
9592         default:
9593                 /* no netdev or rings for the other VSI types */
9594                 break;
9595         }
9596
9597         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9598             (vsi->type == I40E_VSI_VMDQ2)) {
9599                 ret = i40e_vsi_config_rss(vsi);
9600         }
9601         return vsi;
9602
9603 err_rings:
9604         i40e_vsi_free_q_vectors(vsi);
9605 err_msix:
9606         if (vsi->netdev_registered) {
9607                 vsi->netdev_registered = false;
9608                 unregister_netdev(vsi->netdev);
9609                 free_netdev(vsi->netdev);
9610                 vsi->netdev = NULL;
9611         }
9612 err_netdev:
9613         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9614 err_vsi:
9615         i40e_vsi_clear(vsi);
9616 err_alloc:
9617         return NULL;
9618 }
9619
9620 /**
9621  * i40e_veb_get_bw_info - Query VEB BW information
9622  * @veb: the veb to query
9623  *
9624  * Query the Tx scheduler BW configuration data for given VEB
9625  **/
9626 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9627 {
9628         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9629         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9630         struct i40e_pf *pf = veb->pf;
9631         struct i40e_hw *hw = &pf->hw;
9632         u32 tc_bw_max;
9633         int ret = 0;
9634         int i;
9635
9636         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9637                                                   &bw_data, NULL);
9638         if (ret) {
9639                 dev_info(&pf->pdev->dev,
9640                          "query veb bw config failed, err %s aq_err %s\n",
9641                          i40e_stat_str(&pf->hw, ret),
9642                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9643                 goto out;
9644         }
9645
9646         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9647                                                    &ets_data, NULL);
9648         if (ret) {
9649                 dev_info(&pf->pdev->dev,
9650                          "query veb bw ets config failed, err %s aq_err %s\n",
9651                          i40e_stat_str(&pf->hw, ret),
9652                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9653                 goto out;
9654         }
9655
9656         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9657         veb->bw_max_quanta = ets_data.tc_bw_max;
9658         veb->is_abs_credits = bw_data.absolute_credits_enable;
9659         veb->enabled_tc = ets_data.tc_valid_bits;
9660         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9661                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9662         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9663                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9664                 veb->bw_tc_limit_credits[i] =
9665                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9666                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9667         }
9668
9669 out:
9670         return ret;
9671 }
9672
9673 /**
9674  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9675  * @pf: board private structure
9676  *
9677  * On error: returns error code (negative)
9678  * On success: returns vsi index in PF (positive)
9679  **/
9680 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9681 {
9682         int ret = -ENOENT;
9683         struct i40e_veb *veb;
9684         int i;
9685
9686         /* Need to protect the allocation of switch elements at the PF level */
9687         mutex_lock(&pf->switch_mutex);
9688
9689         /* VEB list may be fragmented if VEB creation/destruction has
9690          * been happening.  We can afford to do a quick scan to look
9691          * for any free slots in the list.
9692          *
9693          * find next empty veb slot, looping back around if necessary
9694          */
9695         i = 0;
9696         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9697                 i++;
9698         if (i >= I40E_MAX_VEB) {
9699                 ret = -ENOMEM;
9700                 goto err_alloc_veb;  /* out of VEB slots! */
9701         }
9702
9703         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9704         if (!veb) {
9705                 ret = -ENOMEM;
9706                 goto err_alloc_veb;
9707         }
9708         veb->pf = pf;
9709         veb->idx = i;
9710         veb->enabled_tc = 1;
9711
9712         pf->veb[i] = veb;
9713         ret = i;
9714 err_alloc_veb:
9715         mutex_unlock(&pf->switch_mutex);
9716         return ret;
9717 }
9718
9719 /**
9720  * i40e_switch_branch_release - Delete a branch of the switch tree
9721  * @branch: where to start deleting
9722  *
9723  * This uses recursion to find the tips of the branch to be
9724  * removed, deleting until we get back to and can delete this VEB.
9725  **/
9726 static void i40e_switch_branch_release(struct i40e_veb *branch)
9727 {
9728         struct i40e_pf *pf = branch->pf;
9729         u16 branch_seid = branch->seid;
9730         u16 veb_idx = branch->idx;
9731         int i;
9732
9733         /* release any VEBs on this VEB - RECURSION */
9734         for (i = 0; i < I40E_MAX_VEB; i++) {
9735                 if (!pf->veb[i])
9736                         continue;
9737                 if (pf->veb[i]->uplink_seid == branch->seid)
9738                         i40e_switch_branch_release(pf->veb[i]);
9739         }
9740
9741         /* Release the VSIs on this VEB, but not the owner VSI.
9742          *
9743          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9744          *       the VEB itself, so don't use (*branch) after this loop.
9745          */
9746         for (i = 0; i < pf->num_alloc_vsi; i++) {
9747                 if (!pf->vsi[i])
9748                         continue;
9749                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9750                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9751                         i40e_vsi_release(pf->vsi[i]);
9752                 }
9753         }
9754
9755         /* There's one corner case where the VEB might not have been
9756          * removed, so double check it here and remove it if needed.
9757          * This case happens if the veb was created from the debugfs
9758          * commands and no VSIs were added to it.
9759          */
9760         if (pf->veb[veb_idx])
9761                 i40e_veb_release(pf->veb[veb_idx]);
9762 }
9763
9764 /**
9765  * i40e_veb_clear - remove veb struct
9766  * @veb: the veb to remove
9767  **/
9768 static void i40e_veb_clear(struct i40e_veb *veb)
9769 {
9770         if (!veb)
9771                 return;
9772
9773         if (veb->pf) {
9774                 struct i40e_pf *pf = veb->pf;
9775
9776                 mutex_lock(&pf->switch_mutex);
9777                 if (pf->veb[veb->idx] == veb)
9778                         pf->veb[veb->idx] = NULL;
9779                 mutex_unlock(&pf->switch_mutex);
9780         }
9781
9782         kfree(veb);
9783 }
9784
9785 /**
9786  * i40e_veb_release - Delete a VEB and free its resources
9787  * @veb: the VEB being removed
9788  **/
9789 void i40e_veb_release(struct i40e_veb *veb)
9790 {
9791         struct i40e_vsi *vsi = NULL;
9792         struct i40e_pf *pf;
9793         int i, n = 0;
9794
9795         pf = veb->pf;
9796
9797         /* find the remaining VSI and check for extras */
9798         for (i = 0; i < pf->num_alloc_vsi; i++) {
9799                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9800                         n++;
9801                         vsi = pf->vsi[i];
9802                 }
9803         }
9804         if (n != 1) {
9805                 dev_info(&pf->pdev->dev,
9806                          "can't remove VEB %d with %d VSIs left\n",
9807                          veb->seid, n);
9808                 return;
9809         }
9810
9811         /* move the remaining VSI to uplink veb */
9812         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9813         if (veb->uplink_seid) {
9814                 vsi->uplink_seid = veb->uplink_seid;
9815                 if (veb->uplink_seid == pf->mac_seid)
9816                         vsi->veb_idx = I40E_NO_VEB;
9817                 else
9818                         vsi->veb_idx = veb->veb_idx;
9819         } else {
9820                 /* floating VEB */
9821                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9822                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9823         }
9824
9825         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9826         i40e_veb_clear(veb);
9827 }
9828
9829 /**
9830  * i40e_add_veb - create the VEB in the switch
9831  * @veb: the VEB to be instantiated
9832  * @vsi: the controlling VSI
9833  **/
9834 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9835 {
9836         struct i40e_pf *pf = veb->pf;
9837         bool is_default = veb->pf->cur_promisc;
9838         bool is_cloud = false;
9839         int ret;
9840
9841         /* get a VEB from the hardware */
9842         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9843                               veb->enabled_tc, is_default,
9844                               is_cloud, &veb->seid, NULL);
9845         if (ret) {
9846                 dev_info(&pf->pdev->dev,
9847                          "couldn't add VEB, err %s aq_err %s\n",
9848                          i40e_stat_str(&pf->hw, ret),
9849                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9850                 return -EPERM;
9851         }
9852
9853         /* get statistics counter */
9854         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9855                                          &veb->stats_idx, NULL, NULL, NULL);
9856         if (ret) {
9857                 dev_info(&pf->pdev->dev,
9858                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9859                          i40e_stat_str(&pf->hw, ret),
9860                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9861                 return -EPERM;
9862         }
9863         ret = i40e_veb_get_bw_info(veb);
9864         if (ret) {
9865                 dev_info(&pf->pdev->dev,
9866                          "couldn't get VEB bw info, err %s aq_err %s\n",
9867                          i40e_stat_str(&pf->hw, ret),
9868                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9869                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9870                 return -ENOENT;
9871         }
9872
9873         vsi->uplink_seid = veb->seid;
9874         vsi->veb_idx = veb->idx;
9875         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9876
9877         return 0;
9878 }
9879
9880 /**
9881  * i40e_veb_setup - Set up a VEB
9882  * @pf: board private structure
9883  * @flags: VEB setup flags
9884  * @uplink_seid: the switch element to link to
9885  * @vsi_seid: the initial VSI seid
9886  * @enabled_tc: Enabled TC bit-map
9887  *
9888  * This allocates the sw VEB structure and links it into the switch
9889  * It is possible and legal for this to be a duplicate of an already
9890  * existing VEB.  It is also possible for both uplink and vsi seids
9891  * to be zero, in order to create a floating VEB.
9892  *
9893  * Returns pointer to the successfully allocated VEB sw struct on
9894  * success, otherwise returns NULL on failure.
9895  **/
9896 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9897                                 u16 uplink_seid, u16 vsi_seid,
9898                                 u8 enabled_tc)
9899 {
9900         struct i40e_veb *veb, *uplink_veb = NULL;
9901         int vsi_idx, veb_idx;
9902         int ret;
9903
9904         /* if one seid is 0, the other must be 0 to create a floating relay */
9905         if ((uplink_seid == 0 || vsi_seid == 0) &&
9906             (uplink_seid + vsi_seid != 0)) {
9907                 dev_info(&pf->pdev->dev,
9908                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9909                          uplink_seid, vsi_seid);
9910                 return NULL;
9911         }
9912
9913         /* make sure there is such a vsi and uplink */
9914         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9915                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9916                         break;
9917         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9918                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9919                          vsi_seid);
9920                 return NULL;
9921         }
9922
9923         if (uplink_seid && uplink_seid != pf->mac_seid) {
9924                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9925                         if (pf->veb[veb_idx] &&
9926                             pf->veb[veb_idx]->seid == uplink_seid) {
9927                                 uplink_veb = pf->veb[veb_idx];
9928                                 break;
9929                         }
9930                 }
9931                 if (!uplink_veb) {
9932                         dev_info(&pf->pdev->dev,
9933                                  "uplink seid %d not found\n", uplink_seid);
9934                         return NULL;
9935                 }
9936         }
9937
9938         /* get veb sw struct */
9939         veb_idx = i40e_veb_mem_alloc(pf);
9940         if (veb_idx < 0)
9941                 goto err_alloc;
9942         veb = pf->veb[veb_idx];
9943         veb->flags = flags;
9944         veb->uplink_seid = uplink_seid;
9945         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9946         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9947
9948         /* create the VEB in the switch */
9949         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9950         if (ret)
9951                 goto err_veb;
9952         if (vsi_idx == pf->lan_vsi)
9953                 pf->lan_veb = veb->idx;
9954
9955         return veb;
9956
9957 err_veb:
9958         i40e_veb_clear(veb);
9959 err_alloc:
9960         return NULL;
9961 }
9962
9963 /**
9964  * i40e_setup_pf_switch_element - set PF vars based on switch type
9965  * @pf: board private structure
9966  * @ele: element we are building info from
9967  * @num_reported: total number of elements
9968  * @printconfig: should we print the contents
9969  *
9970  * helper function to assist in extracting a few useful SEID values.
9971  **/
9972 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9973                                 struct i40e_aqc_switch_config_element_resp *ele,
9974                                 u16 num_reported, bool printconfig)
9975 {
9976         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9977         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9978         u8 element_type = ele->element_type;
9979         u16 seid = le16_to_cpu(ele->seid);
9980
9981         if (printconfig)
9982                 dev_info(&pf->pdev->dev,
9983                          "type=%d seid=%d uplink=%d downlink=%d\n",
9984                          element_type, seid, uplink_seid, downlink_seid);
9985
9986         switch (element_type) {
9987         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9988                 pf->mac_seid = seid;
9989                 break;
9990         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9991                 /* Main VEB? */
9992                 if (uplink_seid != pf->mac_seid)
9993                         break;
9994                 if (pf->lan_veb == I40E_NO_VEB) {
9995                         int v;
9996
9997                         /* find existing or else empty VEB */
9998                         for (v = 0; v < I40E_MAX_VEB; v++) {
9999                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10000                                         pf->lan_veb = v;
10001                                         break;
10002                                 }
10003                         }
10004                         if (pf->lan_veb == I40E_NO_VEB) {
10005                                 v = i40e_veb_mem_alloc(pf);
10006                                 if (v < 0)
10007                                         break;
10008                                 pf->lan_veb = v;
10009                         }
10010                 }
10011
10012                 pf->veb[pf->lan_veb]->seid = seid;
10013                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10014                 pf->veb[pf->lan_veb]->pf = pf;
10015                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10016                 break;
10017         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10018                 if (num_reported != 1)
10019                         break;
10020                 /* This is immediately after a reset so we can assume this is
10021                  * the PF's VSI
10022                  */
10023                 pf->mac_seid = uplink_seid;
10024                 pf->pf_seid = downlink_seid;
10025                 pf->main_vsi_seid = seid;
10026                 if (printconfig)
10027                         dev_info(&pf->pdev->dev,
10028                                  "pf_seid=%d main_vsi_seid=%d\n",
10029                                  pf->pf_seid, pf->main_vsi_seid);
10030                 break;
10031         case I40E_SWITCH_ELEMENT_TYPE_PF:
10032         case I40E_SWITCH_ELEMENT_TYPE_VF:
10033         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10034         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10035         case I40E_SWITCH_ELEMENT_TYPE_PE:
10036         case I40E_SWITCH_ELEMENT_TYPE_PA:
10037                 /* ignore these for now */
10038                 break;
10039         default:
10040                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10041                          element_type, seid);
10042                 break;
10043         }
10044 }
10045
10046 /**
10047  * i40e_fetch_switch_configuration - Get switch config from firmware
10048  * @pf: board private structure
10049  * @printconfig: should we print the contents
10050  *
10051  * Get the current switch configuration from the device and
10052  * extract a few useful SEID values.
10053  **/
10054 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10055 {
10056         struct i40e_aqc_get_switch_config_resp *sw_config;
10057         u16 next_seid = 0;
10058         int ret = 0;
10059         u8 *aq_buf;
10060         int i;
10061
10062         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10063         if (!aq_buf)
10064                 return -ENOMEM;
10065
10066         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10067         do {
10068                 u16 num_reported, num_total;
10069
10070                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10071                                                 I40E_AQ_LARGE_BUF,
10072                                                 &next_seid, NULL);
10073                 if (ret) {
10074                         dev_info(&pf->pdev->dev,
10075                                  "get switch config failed err %s aq_err %s\n",
10076                                  i40e_stat_str(&pf->hw, ret),
10077                                  i40e_aq_str(&pf->hw,
10078                                              pf->hw.aq.asq_last_status));
10079                         kfree(aq_buf);
10080                         return -ENOENT;
10081                 }
10082
10083                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10084                 num_total = le16_to_cpu(sw_config->header.num_total);
10085
10086                 if (printconfig)
10087                         dev_info(&pf->pdev->dev,
10088                                  "header: %d reported %d total\n",
10089                                  num_reported, num_total);
10090
10091                 for (i = 0; i < num_reported; i++) {
10092                         struct i40e_aqc_switch_config_element_resp *ele =
10093                                 &sw_config->element[i];
10094
10095                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10096                                                      printconfig);
10097                 }
10098         } while (next_seid != 0);
10099
10100         kfree(aq_buf);
10101         return ret;
10102 }
10103
10104 /**
10105  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10106  * @pf: board private structure
10107  * @reinit: if the Main VSI needs to re-initialized.
10108  *
10109  * Returns 0 on success, negative value on failure
10110  **/
10111 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10112 {
10113         int ret;
10114
10115         /* find out what's out there already */
10116         ret = i40e_fetch_switch_configuration(pf, false);
10117         if (ret) {
10118                 dev_info(&pf->pdev->dev,
10119                          "couldn't fetch switch config, err %s aq_err %s\n",
10120                          i40e_stat_str(&pf->hw, ret),
10121                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10122                 return ret;
10123         }
10124         i40e_pf_reset_stats(pf);
10125
10126         /* first time setup */
10127         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10128                 struct i40e_vsi *vsi = NULL;
10129                 u16 uplink_seid;
10130
10131                 /* Set up the PF VSI associated with the PF's main VSI
10132                  * that is already in the HW switch
10133                  */
10134                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10135                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10136                 else
10137                         uplink_seid = pf->mac_seid;
10138                 if (pf->lan_vsi == I40E_NO_VSI)
10139                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10140                 else if (reinit)
10141                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10142                 if (!vsi) {
10143                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10144                         i40e_fdir_teardown(pf);
10145                         return -EAGAIN;
10146                 }
10147         } else {
10148                 /* force a reset of TC and queue layout configurations */
10149                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10150
10151                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10152                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10153                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10154         }
10155         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10156
10157         i40e_fdir_sb_setup(pf);
10158
10159         /* Setup static PF queue filter control settings */
10160         ret = i40e_setup_pf_filter_control(pf);
10161         if (ret) {
10162                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10163                          ret);
10164                 /* Failure here should not stop continuing other steps */
10165         }
10166
10167         /* enable RSS in the HW, even for only one queue, as the stack can use
10168          * the hash
10169          */
10170         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10171                 i40e_pf_config_rss(pf);
10172
10173         /* fill in link information and enable LSE reporting */
10174         i40e_update_link_info(&pf->hw);
10175         i40e_link_event(pf);
10176
10177         /* Initialize user-specific link properties */
10178         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10179                                   I40E_AQ_AN_COMPLETED) ? true : false);
10180
10181         i40e_ptp_init(pf);
10182
10183         return ret;
10184 }
10185
10186 /**
10187  * i40e_determine_queue_usage - Work out queue distribution
10188  * @pf: board private structure
10189  **/
10190 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10191 {
10192         int queues_left;
10193
10194         pf->num_lan_qps = 0;
10195 #ifdef I40E_FCOE
10196         pf->num_fcoe_qps = 0;
10197 #endif
10198
10199         /* Find the max queues to be put into basic use.  We'll always be
10200          * using TC0, whether or not DCB is running, and TC0 will get the
10201          * big RSS set.
10202          */
10203         queues_left = pf->hw.func_caps.num_tx_qp;
10204
10205         if ((queues_left == 1) ||
10206             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10207                 /* one qp for PF, no queues for anything else */
10208                 queues_left = 0;
10209                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10210
10211                 /* make sure all the fancies are disabled */
10212                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10213 #ifdef I40E_FCOE
10214                                I40E_FLAG_FCOE_ENABLED   |
10215 #endif
10216                                I40E_FLAG_FD_SB_ENABLED  |
10217                                I40E_FLAG_FD_ATR_ENABLED |
10218                                I40E_FLAG_DCB_CAPABLE    |
10219                                I40E_FLAG_SRIOV_ENABLED  |
10220                                I40E_FLAG_VMDQ_ENABLED);
10221         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10222                                   I40E_FLAG_FD_SB_ENABLED |
10223                                   I40E_FLAG_FD_ATR_ENABLED |
10224                                   I40E_FLAG_DCB_CAPABLE))) {
10225                 /* one qp for PF */
10226                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10227                 queues_left -= pf->num_lan_qps;
10228
10229                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10230 #ifdef I40E_FCOE
10231                                I40E_FLAG_FCOE_ENABLED   |
10232 #endif
10233                                I40E_FLAG_FD_SB_ENABLED  |
10234                                I40E_FLAG_FD_ATR_ENABLED |
10235                                I40E_FLAG_DCB_ENABLED    |
10236                                I40E_FLAG_VMDQ_ENABLED);
10237         } else {
10238                 /* Not enough queues for all TCs */
10239                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10240                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10241                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10242                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10243                 }
10244                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10245                                         num_online_cpus());
10246                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10247                                         pf->hw.func_caps.num_tx_qp);
10248
10249                 queues_left -= pf->num_lan_qps;
10250         }
10251
10252 #ifdef I40E_FCOE
10253         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10254                 if (I40E_DEFAULT_FCOE <= queues_left) {
10255                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10256                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10257                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10258                 } else {
10259                         pf->num_fcoe_qps = 0;
10260                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10261                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10262                 }
10263
10264                 queues_left -= pf->num_fcoe_qps;
10265         }
10266
10267 #endif
10268         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10269                 if (queues_left > 1) {
10270                         queues_left -= 1; /* save 1 queue for FD */
10271                 } else {
10272                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10273                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10274                 }
10275         }
10276
10277         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10278             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10279                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10280                                         (queues_left / pf->num_vf_qps));
10281                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10282         }
10283
10284         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10285             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10286                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10287                                           (queues_left / pf->num_vmdq_qps));
10288                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10289         }
10290
10291         pf->queues_left = queues_left;
10292         dev_dbg(&pf->pdev->dev,
10293                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10294                 pf->hw.func_caps.num_tx_qp,
10295                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10296                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10297                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10298                 queues_left);
10299 #ifdef I40E_FCOE
10300         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10301 #endif
10302 }
10303
10304 /**
10305  * i40e_setup_pf_filter_control - Setup PF static filter control
10306  * @pf: PF to be setup
10307  *
10308  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10309  * settings. If PE/FCoE are enabled then it will also set the per PF
10310  * based filter sizes required for them. It also enables Flow director,
10311  * ethertype and macvlan type filter settings for the pf.
10312  *
10313  * Returns 0 on success, negative on failure
10314  **/
10315 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10316 {
10317         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10318
10319         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10320
10321         /* Flow Director is enabled */
10322         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10323                 settings->enable_fdir = true;
10324
10325         /* Ethtype and MACVLAN filters enabled for PF */
10326         settings->enable_ethtype = true;
10327         settings->enable_macvlan = true;
10328
10329         if (i40e_set_filter_control(&pf->hw, settings))
10330                 return -ENOENT;
10331
10332         return 0;
10333 }
10334
10335 #define INFO_STRING_LEN 255
10336 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10337 static void i40e_print_features(struct i40e_pf *pf)
10338 {
10339         struct i40e_hw *hw = &pf->hw;
10340         char *buf, *string;
10341         int i = 0;
10342
10343         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
10344         if (!string) {
10345                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
10346                 return;
10347         }
10348
10349         buf = string;
10350
10351         i += snprintf(&buf[i], REMAIN(i), "Features: PF-id[%d] ", hw->pf_id);
10352 #ifdef CONFIG_PCI_IOV
10353         i += snprintf(&buf[i], REMAIN(i), "VFs: %d ", pf->num_req_vfs);
10354 #endif
10355         i += snprintf(&buf[i], REMAIN(i), "VSIs: %d QP: %d RX: %s ",
10356                       pf->hw.func_caps.num_vsis,
10357                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10358                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10359
10360         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10361                 i += snprintf(&buf[i], REMAIN(i), "RSS ");
10362         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10363                 i += snprintf(&buf[i], REMAIN(i), "FD_ATR ");
10364         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10365                 i += snprintf(&buf[i], REMAIN(i), "FD_SB ");
10366                 i += snprintf(&buf[i], REMAIN(i), "NTUPLE ");
10367         }
10368         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10369                 i += snprintf(&buf[i], REMAIN(i), "DCB ");
10370 #if IS_ENABLED(CONFIG_VXLAN)
10371         i += snprintf(&buf[i], REMAIN(i), "VxLAN ");
10372 #endif
10373         if (pf->flags & I40E_FLAG_PTP)
10374                 i += snprintf(&buf[i], REMAIN(i), "PTP ");
10375 #ifdef I40E_FCOE
10376         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10377                 i += snprintf(&buf[i], REMAIN(i), "FCOE ");
10378 #endif
10379         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10380                 i += snprintf(&buf[i], REMAIN(i), "VEPA ");
10381         else
10382                 buf += sprintf(buf, "VEPA ");
10383
10384         dev_info(&pf->pdev->dev, "%s\n", string);
10385         kfree(string);
10386         WARN_ON(i > INFO_STRING_LEN);
10387 }
10388
10389 /**
10390  * i40e_probe - Device initialization routine
10391  * @pdev: PCI device information struct
10392  * @ent: entry in i40e_pci_tbl
10393  *
10394  * i40e_probe initializes a PF identified by a pci_dev structure.
10395  * The OS initialization, configuring of the PF private structure,
10396  * and a hardware reset occur.
10397  *
10398  * Returns 0 on success, negative on failure
10399  **/
10400 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10401 {
10402         struct i40e_aq_get_phy_abilities_resp abilities;
10403         struct i40e_pf *pf;
10404         struct i40e_hw *hw;
10405         static u16 pfs_found;
10406         u16 wol_nvm_bits;
10407         u16 link_status;
10408         int err;
10409         u32 len;
10410         u32 val;
10411         u32 i;
10412         u8 set_fc_aq_fail;
10413
10414         err = pci_enable_device_mem(pdev);
10415         if (err)
10416                 return err;
10417
10418         /* set up for high or low dma */
10419         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10420         if (err) {
10421                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10422                 if (err) {
10423                         dev_err(&pdev->dev,
10424                                 "DMA configuration failed: 0x%x\n", err);
10425                         goto err_dma;
10426                 }
10427         }
10428
10429         /* set up pci connections */
10430         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10431                                            IORESOURCE_MEM), i40e_driver_name);
10432         if (err) {
10433                 dev_info(&pdev->dev,
10434                          "pci_request_selected_regions failed %d\n", err);
10435                 goto err_pci_reg;
10436         }
10437
10438         pci_enable_pcie_error_reporting(pdev);
10439         pci_set_master(pdev);
10440
10441         /* Now that we have a PCI connection, we need to do the
10442          * low level device setup.  This is primarily setting up
10443          * the Admin Queue structures and then querying for the
10444          * device's current profile information.
10445          */
10446         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10447         if (!pf) {
10448                 err = -ENOMEM;
10449                 goto err_pf_alloc;
10450         }
10451         pf->next_vsi = 0;
10452         pf->pdev = pdev;
10453         set_bit(__I40E_DOWN, &pf->state);
10454
10455         hw = &pf->hw;
10456         hw->back = pf;
10457
10458         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10459                                 I40E_MAX_CSR_SPACE);
10460
10461         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10462         if (!hw->hw_addr) {
10463                 err = -EIO;
10464                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10465                          (unsigned int)pci_resource_start(pdev, 0),
10466                          pf->ioremap_len, err);
10467                 goto err_ioremap;
10468         }
10469         hw->vendor_id = pdev->vendor;
10470         hw->device_id = pdev->device;
10471         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10472         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10473         hw->subsystem_device_id = pdev->subsystem_device;
10474         hw->bus.device = PCI_SLOT(pdev->devfn);
10475         hw->bus.func = PCI_FUNC(pdev->devfn);
10476         pf->instance = pfs_found;
10477
10478         if (debug != -1) {
10479                 pf->msg_enable = pf->hw.debug_mask;
10480                 pf->msg_enable = debug;
10481         }
10482
10483         /* do a special CORER for clearing PXE mode once at init */
10484         if (hw->revision_id == 0 &&
10485             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10486                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10487                 i40e_flush(hw);
10488                 msleep(200);
10489                 pf->corer_count++;
10490
10491                 i40e_clear_pxe_mode(hw);
10492         }
10493
10494         /* Reset here to make sure all is clean and to define PF 'n' */
10495         i40e_clear_hw(hw);
10496         err = i40e_pf_reset(hw);
10497         if (err) {
10498                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10499                 goto err_pf_reset;
10500         }
10501         pf->pfr_count++;
10502
10503         hw->aq.num_arq_entries = I40E_AQ_LEN;
10504         hw->aq.num_asq_entries = I40E_AQ_LEN;
10505         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10506         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10507         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10508
10509         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10510                  "%s-%s:misc",
10511                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10512
10513         err = i40e_init_shared_code(hw);
10514         if (err) {
10515                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10516                          err);
10517                 goto err_pf_reset;
10518         }
10519
10520         /* set up a default setting for link flow control */
10521         pf->hw.fc.requested_mode = I40E_FC_NONE;
10522
10523         err = i40e_init_adminq(hw);
10524         if (err) {
10525                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10526                         dev_info(&pdev->dev,
10527                                  "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");
10528                 else
10529                         dev_info(&pdev->dev,
10530                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10531
10532                 goto err_pf_reset;
10533         }
10534
10535         /* provide nvm, fw, api versions */
10536         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10537                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10538                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10539                  i40e_nvm_version_str(hw));
10540
10541         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10542             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10543                 dev_info(&pdev->dev,
10544                          "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");
10545         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10546                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10547                 dev_info(&pdev->dev,
10548                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10549
10550         i40e_verify_eeprom(pf);
10551
10552         /* Rev 0 hardware was never productized */
10553         if (hw->revision_id < 1)
10554                 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");
10555
10556         i40e_clear_pxe_mode(hw);
10557         err = i40e_get_capabilities(pf);
10558         if (err)
10559                 goto err_adminq_setup;
10560
10561         err = i40e_sw_init(pf);
10562         if (err) {
10563                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10564                 goto err_sw_init;
10565         }
10566
10567         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10568                                 hw->func_caps.num_rx_qp,
10569                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10570         if (err) {
10571                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10572                 goto err_init_lan_hmc;
10573         }
10574
10575         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10576         if (err) {
10577                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10578                 err = -ENOENT;
10579                 goto err_configure_lan_hmc;
10580         }
10581
10582         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10583          * Ignore error return codes because if it was already disabled via
10584          * hardware settings this will fail
10585          */
10586         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10587             (pf->hw.aq.fw_maj_ver < 4)) {
10588                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10589                 i40e_aq_stop_lldp(hw, true, NULL);
10590         }
10591
10592         i40e_get_mac_addr(hw, hw->mac.addr);
10593         if (!is_valid_ether_addr(hw->mac.addr)) {
10594                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10595                 err = -EIO;
10596                 goto err_mac_addr;
10597         }
10598         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10599         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10600         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10601         if (is_valid_ether_addr(hw->mac.port_addr))
10602                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10603 #ifdef I40E_FCOE
10604         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10605         if (err)
10606                 dev_info(&pdev->dev,
10607                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10608         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10609                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10610                          hw->mac.san_addr);
10611                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10612         }
10613         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10614 #endif /* I40E_FCOE */
10615
10616         pci_set_drvdata(pdev, pf);
10617         pci_save_state(pdev);
10618 #ifdef CONFIG_I40E_DCB
10619         err = i40e_init_pf_dcb(pf);
10620         if (err) {
10621                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10622                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10623                 /* Continue without DCB enabled */
10624         }
10625 #endif /* CONFIG_I40E_DCB */
10626
10627         /* set up periodic task facility */
10628         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10629         pf->service_timer_period = HZ;
10630
10631         INIT_WORK(&pf->service_task, i40e_service_task);
10632         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10633         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10634
10635         /* NVM bit on means WoL disabled for the port */
10636         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10637         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10638                 pf->wol_en = false;
10639         else
10640                 pf->wol_en = true;
10641         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10642
10643         /* set up the main switch operations */
10644         i40e_determine_queue_usage(pf);
10645         err = i40e_init_interrupt_scheme(pf);
10646         if (err)
10647                 goto err_switch_setup;
10648
10649         /* The number of VSIs reported by the FW is the minimum guaranteed
10650          * to us; HW supports far more and we share the remaining pool with
10651          * the other PFs. We allocate space for more than the guarantee with
10652          * the understanding that we might not get them all later.
10653          */
10654         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10655                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10656         else
10657                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10658
10659         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10660         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10661         pf->vsi = kzalloc(len, GFP_KERNEL);
10662         if (!pf->vsi) {
10663                 err = -ENOMEM;
10664                 goto err_switch_setup;
10665         }
10666
10667 #ifdef CONFIG_PCI_IOV
10668         /* prep for VF support */
10669         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10670             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10671             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10672                 if (pci_num_vf(pdev))
10673                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10674         }
10675 #endif
10676         err = i40e_setup_pf_switch(pf, false);
10677         if (err) {
10678                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10679                 goto err_vsis;
10680         }
10681
10682         /* Make sure flow control is set according to current settings */
10683         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10684         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10685                 dev_dbg(&pf->pdev->dev,
10686                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10687                         i40e_stat_str(hw, err),
10688                         i40e_aq_str(hw, hw->aq.asq_last_status));
10689         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10690                 dev_dbg(&pf->pdev->dev,
10691                         "Set fc with err %s aq_err %s on set_phy_config\n",
10692                         i40e_stat_str(hw, err),
10693                         i40e_aq_str(hw, hw->aq.asq_last_status));
10694         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10695                 dev_dbg(&pf->pdev->dev,
10696                         "Set fc with err %s aq_err %s on get_link_info\n",
10697                         i40e_stat_str(hw, err),
10698                         i40e_aq_str(hw, hw->aq.asq_last_status));
10699
10700         /* if FDIR VSI was set up, start it now */
10701         for (i = 0; i < pf->num_alloc_vsi; i++) {
10702                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10703                         i40e_vsi_open(pf->vsi[i]);
10704                         break;
10705                 }
10706         }
10707
10708         /* driver is only interested in link up/down and module qualification
10709          * reports from firmware
10710          */
10711         err = i40e_aq_set_phy_int_mask(&pf->hw,
10712                                        I40E_AQ_EVENT_LINK_UPDOWN |
10713                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10714         if (err)
10715                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10716                          i40e_stat_str(&pf->hw, err),
10717                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10718
10719         /* Reconfigure hardware for allowing smaller MSS in the case
10720          * of TSO, so that we avoid the MDD being fired and causing
10721          * a reset in the case of small MSS+TSO.
10722          */
10723         val = rd32(hw, I40E_REG_MSS);
10724         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10725                 val &= ~I40E_REG_MSS_MIN_MASK;
10726                 val |= I40E_64BYTE_MSS;
10727                 wr32(hw, I40E_REG_MSS, val);
10728         }
10729
10730         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10731             (pf->hw.aq.fw_maj_ver < 4)) {
10732                 msleep(75);
10733                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10734                 if (err)
10735                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10736                                  i40e_stat_str(&pf->hw, err),
10737                                  i40e_aq_str(&pf->hw,
10738                                              pf->hw.aq.asq_last_status));
10739         }
10740         /* The main driver is (mostly) up and happy. We need to set this state
10741          * before setting up the misc vector or we get a race and the vector
10742          * ends up disabled forever.
10743          */
10744         clear_bit(__I40E_DOWN, &pf->state);
10745
10746         /* In case of MSIX we are going to setup the misc vector right here
10747          * to handle admin queue events etc. In case of legacy and MSI
10748          * the misc functionality and queue processing is combined in
10749          * the same vector and that gets setup at open.
10750          */
10751         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10752                 err = i40e_setup_misc_vector(pf);
10753                 if (err) {
10754                         dev_info(&pdev->dev,
10755                                  "setup of misc vector failed: %d\n", err);
10756                         goto err_vsis;
10757                 }
10758         }
10759
10760 #ifdef CONFIG_PCI_IOV
10761         /* prep for VF support */
10762         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10763             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10764             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10765                 u32 val;
10766
10767                 /* disable link interrupts for VFs */
10768                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10769                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10770                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10771                 i40e_flush(hw);
10772
10773                 if (pci_num_vf(pdev)) {
10774                         dev_info(&pdev->dev,
10775                                  "Active VFs found, allocating resources.\n");
10776                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10777                         if (err)
10778                                 dev_info(&pdev->dev,
10779                                          "Error %d allocating resources for existing VFs\n",
10780                                          err);
10781                 }
10782         }
10783 #endif /* CONFIG_PCI_IOV */
10784
10785         pfs_found++;
10786
10787         i40e_dbg_pf_init(pf);
10788
10789         /* tell the firmware that we're starting */
10790         i40e_send_version(pf);
10791
10792         /* since everything's happy, start the service_task timer */
10793         mod_timer(&pf->service_timer,
10794                   round_jiffies(jiffies + pf->service_timer_period));
10795
10796 #ifdef I40E_FCOE
10797         /* create FCoE interface */
10798         i40e_fcoe_vsi_setup(pf);
10799
10800 #endif
10801 #define PCI_SPEED_SIZE 8
10802 #define PCI_WIDTH_SIZE 8
10803         /* Devices on the IOSF bus do not have this information
10804          * and will report PCI Gen 1 x 1 by default so don't bother
10805          * checking them.
10806          */
10807         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10808                 char speed[PCI_SPEED_SIZE] = "Unknown";
10809                 char width[PCI_WIDTH_SIZE] = "Unknown";
10810
10811                 /* Get the negotiated link width and speed from PCI config
10812                  * space
10813                  */
10814                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10815                                           &link_status);
10816
10817                 i40e_set_pci_config_data(hw, link_status);
10818
10819                 switch (hw->bus.speed) {
10820                 case i40e_bus_speed_8000:
10821                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10822                 case i40e_bus_speed_5000:
10823                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10824                 case i40e_bus_speed_2500:
10825                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10826                 default:
10827                         break;
10828                 }
10829                 switch (hw->bus.width) {
10830                 case i40e_bus_width_pcie_x8:
10831                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10832                 case i40e_bus_width_pcie_x4:
10833                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10834                 case i40e_bus_width_pcie_x2:
10835                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10836                 case i40e_bus_width_pcie_x1:
10837                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10838                 default:
10839                         break;
10840                 }
10841
10842                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10843                          speed, width);
10844
10845                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10846                     hw->bus.speed < i40e_bus_speed_8000) {
10847                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10848                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10849                 }
10850         }
10851
10852         /* get the requested speeds from the fw */
10853         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10854         if (err)
10855                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10856                         i40e_stat_str(&pf->hw, err),
10857                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10858         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10859
10860         /* get the supported phy types from the fw */
10861         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10862         if (err)
10863                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10864                         i40e_stat_str(&pf->hw, err),
10865                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10866         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10867
10868         /* Add a filter to drop all Flow control frames from any VSI from being
10869          * transmitted. By doing so we stop a malicious VF from sending out
10870          * PAUSE or PFC frames and potentially controlling traffic for other
10871          * PF/VF VSIs.
10872          * The FW can still send Flow control frames if enabled.
10873          */
10874         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10875                                                        pf->main_vsi_seid);
10876
10877         /* print a string summarizing features */
10878         i40e_print_features(pf);
10879
10880         return 0;
10881
10882         /* Unwind what we've done if something failed in the setup */
10883 err_vsis:
10884         set_bit(__I40E_DOWN, &pf->state);
10885         i40e_clear_interrupt_scheme(pf);
10886         kfree(pf->vsi);
10887 err_switch_setup:
10888         i40e_reset_interrupt_capability(pf);
10889         del_timer_sync(&pf->service_timer);
10890 err_mac_addr:
10891 err_configure_lan_hmc:
10892         (void)i40e_shutdown_lan_hmc(hw);
10893 err_init_lan_hmc:
10894         kfree(pf->qp_pile);
10895 err_sw_init:
10896 err_adminq_setup:
10897         (void)i40e_shutdown_adminq(hw);
10898 err_pf_reset:
10899         iounmap(hw->hw_addr);
10900 err_ioremap:
10901         kfree(pf);
10902 err_pf_alloc:
10903         pci_disable_pcie_error_reporting(pdev);
10904         pci_release_selected_regions(pdev,
10905                                      pci_select_bars(pdev, IORESOURCE_MEM));
10906 err_pci_reg:
10907 err_dma:
10908         pci_disable_device(pdev);
10909         return err;
10910 }
10911
10912 /**
10913  * i40e_remove - Device removal routine
10914  * @pdev: PCI device information struct
10915  *
10916  * i40e_remove is called by the PCI subsystem to alert the driver
10917  * that is should release a PCI device.  This could be caused by a
10918  * Hot-Plug event, or because the driver is going to be removed from
10919  * memory.
10920  **/
10921 static void i40e_remove(struct pci_dev *pdev)
10922 {
10923         struct i40e_pf *pf = pci_get_drvdata(pdev);
10924         struct i40e_hw *hw = &pf->hw;
10925         i40e_status ret_code;
10926         int i;
10927
10928         i40e_dbg_pf_exit(pf);
10929
10930         i40e_ptp_stop(pf);
10931
10932         /* Disable RSS in hw */
10933         wr32(hw, I40E_PFQF_HENA(0), 0);
10934         wr32(hw, I40E_PFQF_HENA(1), 0);
10935
10936         /* no more scheduling of any task */
10937         set_bit(__I40E_DOWN, &pf->state);
10938         del_timer_sync(&pf->service_timer);
10939         cancel_work_sync(&pf->service_task);
10940         i40e_fdir_teardown(pf);
10941
10942         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10943                 i40e_free_vfs(pf);
10944                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10945         }
10946
10947         i40e_fdir_teardown(pf);
10948
10949         /* If there is a switch structure or any orphans, remove them.
10950          * This will leave only the PF's VSI remaining.
10951          */
10952         for (i = 0; i < I40E_MAX_VEB; i++) {
10953                 if (!pf->veb[i])
10954                         continue;
10955
10956                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10957                     pf->veb[i]->uplink_seid == 0)
10958                         i40e_switch_branch_release(pf->veb[i]);
10959         }
10960
10961         /* Now we can shutdown the PF's VSI, just before we kill
10962          * adminq and hmc.
10963          */
10964         if (pf->vsi[pf->lan_vsi])
10965                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10966
10967         /* shutdown and destroy the HMC */
10968         if (pf->hw.hmc.hmc_obj) {
10969                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10970                 if (ret_code)
10971                         dev_warn(&pdev->dev,
10972                                  "Failed to destroy the HMC resources: %d\n",
10973                                  ret_code);
10974         }
10975
10976         /* shutdown the adminq */
10977         ret_code = i40e_shutdown_adminq(&pf->hw);
10978         if (ret_code)
10979                 dev_warn(&pdev->dev,
10980                          "Failed to destroy the Admin Queue resources: %d\n",
10981                          ret_code);
10982
10983         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10984         i40e_clear_interrupt_scheme(pf);
10985         for (i = 0; i < pf->num_alloc_vsi; i++) {
10986                 if (pf->vsi[i]) {
10987                         i40e_vsi_clear_rings(pf->vsi[i]);
10988                         i40e_vsi_clear(pf->vsi[i]);
10989                         pf->vsi[i] = NULL;
10990                 }
10991         }
10992
10993         for (i = 0; i < I40E_MAX_VEB; i++) {
10994                 kfree(pf->veb[i]);
10995                 pf->veb[i] = NULL;
10996         }
10997
10998         kfree(pf->qp_pile);
10999         kfree(pf->vsi);
11000
11001         iounmap(pf->hw.hw_addr);
11002         kfree(pf);
11003         pci_release_selected_regions(pdev,
11004                                      pci_select_bars(pdev, IORESOURCE_MEM));
11005
11006         pci_disable_pcie_error_reporting(pdev);
11007         pci_disable_device(pdev);
11008 }
11009
11010 /**
11011  * i40e_pci_error_detected - warning that something funky happened in PCI land
11012  * @pdev: PCI device information struct
11013  *
11014  * Called to warn that something happened and the error handling steps
11015  * are in progress.  Allows the driver to quiesce things, be ready for
11016  * remediation.
11017  **/
11018 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11019                                                 enum pci_channel_state error)
11020 {
11021         struct i40e_pf *pf = pci_get_drvdata(pdev);
11022
11023         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11024
11025         /* shutdown all operations */
11026         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11027                 rtnl_lock();
11028                 i40e_prep_for_reset(pf);
11029                 rtnl_unlock();
11030         }
11031
11032         /* Request a slot reset */
11033         return PCI_ERS_RESULT_NEED_RESET;
11034 }
11035
11036 /**
11037  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11038  * @pdev: PCI device information struct
11039  *
11040  * Called to find if the driver can work with the device now that
11041  * the pci slot has been reset.  If a basic connection seems good
11042  * (registers are readable and have sane content) then return a
11043  * happy little PCI_ERS_RESULT_xxx.
11044  **/
11045 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11046 {
11047         struct i40e_pf *pf = pci_get_drvdata(pdev);
11048         pci_ers_result_t result;
11049         int err;
11050         u32 reg;
11051
11052         dev_dbg(&pdev->dev, "%s\n", __func__);
11053         if (pci_enable_device_mem(pdev)) {
11054                 dev_info(&pdev->dev,
11055                          "Cannot re-enable PCI device after reset.\n");
11056                 result = PCI_ERS_RESULT_DISCONNECT;
11057         } else {
11058                 pci_set_master(pdev);
11059                 pci_restore_state(pdev);
11060                 pci_save_state(pdev);
11061                 pci_wake_from_d3(pdev, false);
11062
11063                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11064                 if (reg == 0)
11065                         result = PCI_ERS_RESULT_RECOVERED;
11066                 else
11067                         result = PCI_ERS_RESULT_DISCONNECT;
11068         }
11069
11070         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11071         if (err) {
11072                 dev_info(&pdev->dev,
11073                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11074                          err);
11075                 /* non-fatal, continue */
11076         }
11077
11078         return result;
11079 }
11080
11081 /**
11082  * i40e_pci_error_resume - restart operations after PCI error recovery
11083  * @pdev: PCI device information struct
11084  *
11085  * Called to allow the driver to bring things back up after PCI error
11086  * and/or reset recovery has finished.
11087  **/
11088 static void i40e_pci_error_resume(struct pci_dev *pdev)
11089 {
11090         struct i40e_pf *pf = pci_get_drvdata(pdev);
11091
11092         dev_dbg(&pdev->dev, "%s\n", __func__);
11093         if (test_bit(__I40E_SUSPENDED, &pf->state))
11094                 return;
11095
11096         rtnl_lock();
11097         i40e_handle_reset_warning(pf);
11098         rtnl_unlock();
11099 }
11100
11101 /**
11102  * i40e_shutdown - PCI callback for shutting down
11103  * @pdev: PCI device information struct
11104  **/
11105 static void i40e_shutdown(struct pci_dev *pdev)
11106 {
11107         struct i40e_pf *pf = pci_get_drvdata(pdev);
11108         struct i40e_hw *hw = &pf->hw;
11109
11110         set_bit(__I40E_SUSPENDED, &pf->state);
11111         set_bit(__I40E_DOWN, &pf->state);
11112         rtnl_lock();
11113         i40e_prep_for_reset(pf);
11114         rtnl_unlock();
11115
11116         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11117         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11118
11119         del_timer_sync(&pf->service_timer);
11120         cancel_work_sync(&pf->service_task);
11121         i40e_fdir_teardown(pf);
11122
11123         rtnl_lock();
11124         i40e_prep_for_reset(pf);
11125         rtnl_unlock();
11126
11127         wr32(hw, I40E_PFPM_APM,
11128              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11129         wr32(hw, I40E_PFPM_WUFC,
11130              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11131
11132         i40e_clear_interrupt_scheme(pf);
11133
11134         if (system_state == SYSTEM_POWER_OFF) {
11135                 pci_wake_from_d3(pdev, pf->wol_en);
11136                 pci_set_power_state(pdev, PCI_D3hot);
11137         }
11138 }
11139
11140 #ifdef CONFIG_PM
11141 /**
11142  * i40e_suspend - PCI callback for moving to D3
11143  * @pdev: PCI device information struct
11144  **/
11145 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11146 {
11147         struct i40e_pf *pf = pci_get_drvdata(pdev);
11148         struct i40e_hw *hw = &pf->hw;
11149
11150         set_bit(__I40E_SUSPENDED, &pf->state);
11151         set_bit(__I40E_DOWN, &pf->state);
11152
11153         rtnl_lock();
11154         i40e_prep_for_reset(pf);
11155         rtnl_unlock();
11156
11157         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11158         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11159
11160         pci_wake_from_d3(pdev, pf->wol_en);
11161         pci_set_power_state(pdev, PCI_D3hot);
11162
11163         return 0;
11164 }
11165
11166 /**
11167  * i40e_resume - PCI callback for waking up from D3
11168  * @pdev: PCI device information struct
11169  **/
11170 static int i40e_resume(struct pci_dev *pdev)
11171 {
11172         struct i40e_pf *pf = pci_get_drvdata(pdev);
11173         u32 err;
11174
11175         pci_set_power_state(pdev, PCI_D0);
11176         pci_restore_state(pdev);
11177         /* pci_restore_state() clears dev->state_saves, so
11178          * call pci_save_state() again to restore it.
11179          */
11180         pci_save_state(pdev);
11181
11182         err = pci_enable_device_mem(pdev);
11183         if (err) {
11184                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11185                 return err;
11186         }
11187         pci_set_master(pdev);
11188
11189         /* no wakeup events while running */
11190         pci_wake_from_d3(pdev, false);
11191
11192         /* handling the reset will rebuild the device state */
11193         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11194                 clear_bit(__I40E_DOWN, &pf->state);
11195                 rtnl_lock();
11196                 i40e_reset_and_rebuild(pf, false);
11197                 rtnl_unlock();
11198         }
11199
11200         return 0;
11201 }
11202
11203 #endif
11204 static const struct pci_error_handlers i40e_err_handler = {
11205         .error_detected = i40e_pci_error_detected,
11206         .slot_reset = i40e_pci_error_slot_reset,
11207         .resume = i40e_pci_error_resume,
11208 };
11209
11210 static struct pci_driver i40e_driver = {
11211         .name     = i40e_driver_name,
11212         .id_table = i40e_pci_tbl,
11213         .probe    = i40e_probe,
11214         .remove   = i40e_remove,
11215 #ifdef CONFIG_PM
11216         .suspend  = i40e_suspend,
11217         .resume   = i40e_resume,
11218 #endif
11219         .shutdown = i40e_shutdown,
11220         .err_handler = &i40e_err_handler,
11221         .sriov_configure = i40e_pci_sriov_configure,
11222 };
11223
11224 /**
11225  * i40e_init_module - Driver registration routine
11226  *
11227  * i40e_init_module is the first routine called when the driver is
11228  * loaded. All it does is register with the PCI subsystem.
11229  **/
11230 static int __init i40e_init_module(void)
11231 {
11232         pr_info("%s: %s - version %s\n", i40e_driver_name,
11233                 i40e_driver_string, i40e_driver_version_str);
11234         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11235
11236         i40e_dbg_init();
11237         return pci_register_driver(&i40e_driver);
11238 }
11239 module_init(i40e_init_module);
11240
11241 /**
11242  * i40e_exit_module - Driver exit cleanup routine
11243  *
11244  * i40e_exit_module is called just before the driver is removed
11245  * from memory.
11246  **/
11247 static void __exit i40e_exit_module(void)
11248 {
11249         pci_unregister_driver(&i40e_driver);
11250         i40e_dbg_exit();
11251 }
11252 module_exit(i40e_exit_module);