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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 4
  42 #define DRV_VERSION_BUILD 8
  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_vsi_stats - Update the vsi statistics counters.
 796  * @vsi: the VSI to be updated
 797  *
 798  * There are a few instances where we store the same stat in a
 799  * couple of different structs.  This is partly because we have
 800  * the netdev stats that need to be filled out, which is slightly
 801  * different from the "eth_stats" defined by the chip and used in
 802  * VF communications.  We sort it out here.
 803  **/
 804 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 805 {
 806         struct i40e_pf *pf = vsi->back;
 807         struct rtnl_link_stats64 *ons;
 808         struct rtnl_link_stats64 *ns;   /* netdev stats */
 809         struct i40e_eth_stats *oes;
 810         struct i40e_eth_stats *es;     /* device's eth stats */
 811         u32 tx_restart, tx_busy;
 812         struct i40e_ring *p;
 813         u32 rx_page, rx_buf;
 814         u64 bytes, packets;
 815         unsigned int start;
 816         u64 tx_linearize;
 817         u64 tx_force_wb;
 818         u64 rx_p, rx_b;
 819         u64 tx_p, tx_b;
 820         u16 q;
 821
 822         if (test_bit(__I40E_DOWN, &vsi->state) ||
 823             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 824                 return;
 825
 826         ns = i40e_get_vsi_stats_struct(vsi);
 827         ons = &vsi->net_stats_offsets;
 828         es = &vsi->eth_stats;
 829         oes = &vsi->eth_stats_offsets;
 830
 831         /* Gather up the netdev and vsi stats that the driver collects
 832          * on the fly during packet processing
 833          */
 834         rx_b = rx_p = 0;
 835         tx_b = tx_p = 0;
 836         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 837         rx_page = 0;
 838         rx_buf = 0;
 839         rcu_read_lock();
 840         for (q = 0; q < vsi->num_queue_pairs; q++) {
 841                 /* locate Tx ring */
 842                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 843
 844                 do {
 845                         start = u64_stats_fetch_begin_irq(&p->syncp);
 846                         packets = p->stats.packets;
 847                         bytes = p->stats.bytes;
 848                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 849                 tx_b += bytes;
 850                 tx_p += packets;
 851                 tx_restart += p->tx_stats.restart_queue;
 852                 tx_busy += p->tx_stats.tx_busy;
 853                 tx_linearize += p->tx_stats.tx_linearize;
 854                 tx_force_wb += p->tx_stats.tx_force_wb;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->tx_linearize = tx_linearize;
 872         vsi->tx_force_wb = tx_force_wb;
 873         vsi->rx_page_failed = rx_page;
 874         vsi->rx_buf_failed = rx_buf;
 875
 876         ns->rx_packets = rx_p;
 877         ns->rx_bytes = rx_b;
 878         ns->tx_packets = tx_p;
 879         ns->tx_bytes = tx_b;
 880
 881         /* update netdev stats from eth stats */
 882         i40e_update_eth_stats(vsi);
 883         ons->tx_errors = oes->tx_errors;
 884         ns->tx_errors = es->tx_errors;
 885         ons->multicast = oes->rx_multicast;
 886         ns->multicast = es->rx_multicast;
 887         ons->rx_dropped = oes->rx_discards;
 888         ns->rx_dropped = es->rx_discards;
 889         ons->tx_dropped = oes->tx_discards;
 890         ns->tx_dropped = es->tx_discards;
 891
 892         /* pull in a couple PF stats if this is the main vsi */
 893         if (vsi == pf->vsi[pf->lan_vsi]) {
 894                 ns->rx_crc_errors = pf->stats.crc_errors;
 895                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 896                 ns->rx_length_errors = pf->stats.rx_length_errors;
 897         }
 898 }
 899
 900 /**
 901  * i40e_update_pf_stats - Update the PF statistics counters.
 902  * @pf: the PF to be updated
 903  **/
 904 static void i40e_update_pf_stats(struct i40e_pf *pf)
 905 {
 906         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 907         struct i40e_hw_port_stats *nsd = &pf->stats;
 908         struct i40e_hw *hw = &pf->hw;
 909         u32 val;
 910         int i;
 911
 912         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 913                            I40E_GLPRT_GORCL(hw->port),
 914                            pf->stat_offsets_loaded,
 915                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 916         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 917                            I40E_GLPRT_GOTCL(hw->port),
 918                            pf->stat_offsets_loaded,
 919                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 920         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 921                            pf->stat_offsets_loaded,
 922                            &osd->eth.rx_discards,
 923                            &nsd->eth.rx_discards);
 924         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 925                            I40E_GLPRT_UPRCL(hw->port),
 926                            pf->stat_offsets_loaded,
 927                            &osd->eth.rx_unicast,
 928                            &nsd->eth.rx_unicast);
 929         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 930                            I40E_GLPRT_MPRCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.rx_multicast,
 933                            &nsd->eth.rx_multicast);
 934         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 935                            I40E_GLPRT_BPRCL(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.rx_broadcast,
 938                            &nsd->eth.rx_broadcast);
 939         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 940                            I40E_GLPRT_UPTCL(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->eth.tx_unicast,
 943                            &nsd->eth.tx_unicast);
 944         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 945                            I40E_GLPRT_MPTCL(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->eth.tx_multicast,
 948                            &nsd->eth.tx_multicast);
 949         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 950                            I40E_GLPRT_BPTCL(hw->port),
 951                            pf->stat_offsets_loaded,
 952                            &osd->eth.tx_broadcast,
 953                            &nsd->eth.tx_broadcast);
 954
 955         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->tx_dropped_link_down,
 958                            &nsd->tx_dropped_link_down);
 959
 960         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->crc_errors, &nsd->crc_errors);
 963
 964         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->illegal_bytes, &nsd->illegal_bytes);
 967
 968         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->mac_local_faults,
 971                            &nsd->mac_local_faults);
 972         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->mac_remote_faults,
 975                            &nsd->mac_remote_faults);
 976
 977         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->rx_length_errors,
 980                            &nsd->rx_length_errors);
 981
 982         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->link_xon_rx, &nsd->link_xon_rx);
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_tx, &nsd->link_xon_tx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 991         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 994
 995         for (i = 0; i < 8; i++) {
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xoff_rx[i],
 999                                    &nsd->priority_xoff_rx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xon_rx[i],
1003                                    &nsd->priority_xon_rx[i]);
1004                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1005                                    pf->stat_offsets_loaded,
1006                                    &osd->priority_xon_tx[i],
1007                                    &nsd->priority_xon_tx[i]);
1008                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1009                                    pf->stat_offsets_loaded,
1010                                    &osd->priority_xoff_tx[i],
1011                                    &nsd->priority_xoff_tx[i]);
1012                 i40e_stat_update32(hw,
1013                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1014                                    pf->stat_offsets_loaded,
1015                                    &osd->priority_xon_2_xoff[i],
1016                                    &nsd->priority_xon_2_xoff[i]);
1017         }
1018
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1020                            I40E_GLPRT_PRC64L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_64, &nsd->rx_size_64);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1024                            I40E_GLPRT_PRC127L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_127, &nsd->rx_size_127);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1028                            I40E_GLPRT_PRC255L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_255, &nsd->rx_size_255);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1032                            I40E_GLPRT_PRC511L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_511, &nsd->rx_size_511);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1036                            I40E_GLPRT_PRC1023L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_1023, &nsd->rx_size_1023);
1039         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1040                            I40E_GLPRT_PRC1522L(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->rx_size_1522, &nsd->rx_size_1522);
1043         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1044                            I40E_GLPRT_PRC9522L(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->rx_size_big, &nsd->rx_size_big);
1047
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1049                            I40E_GLPRT_PTC64L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_64, &nsd->tx_size_64);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1053                            I40E_GLPRT_PTC127L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_127, &nsd->tx_size_127);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1057                            I40E_GLPRT_PTC255L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_255, &nsd->tx_size_255);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1061                            I40E_GLPRT_PTC511L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_511, &nsd->tx_size_511);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1065                            I40E_GLPRT_PTC1023L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_1023, &nsd->tx_size_1023);
1068         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1069                            I40E_GLPRT_PTC1522L(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->tx_size_1522, &nsd->tx_size_1522);
1072         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1073                            I40E_GLPRT_PTC9522L(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->tx_size_big, &nsd->tx_size_big);
1076
1077         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_undersize, &nsd->rx_undersize);
1080         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_fragments, &nsd->rx_fragments);
1083         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_oversize, &nsd->rx_oversize);
1086         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_jabber, &nsd->rx_jabber);
1089
1090         /* FDIR stats */
1091         i40e_stat_update32(hw,
1092                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1093                            pf->stat_offsets_loaded,
1094                            &osd->fd_atr_match, &nsd->fd_atr_match);
1095         i40e_stat_update32(hw,
1096                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1097                            pf->stat_offsets_loaded,
1098                            &osd->fd_sb_match, &nsd->fd_sb_match);
1099         i40e_stat_update32(hw,
1100                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1101                       pf->stat_offsets_loaded,
1102                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1103
1104         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1105         nsd->tx_lpi_status =
1106                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1107                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1108         nsd->rx_lpi_status =
1109                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1110                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1111         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1114         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1115                            pf->stat_offsets_loaded,
1116                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1117
1118         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1119             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1120                 nsd->fd_sb_status = true;
1121         else
1122                 nsd->fd_sb_status = false;
1123
1124         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1125             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1126                 nsd->fd_atr_status = true;
1127         else
1128                 nsd->fd_atr_status = false;
1129
1130         pf->stat_offsets_loaded = true;
1131 }
1132
1133 /**
1134  * i40e_update_stats - Update the various statistics counters.
1135  * @vsi: the VSI to be updated
1136  *
1137  * Update the various stats for this VSI and its related entities.
1138  **/
1139 void i40e_update_stats(struct i40e_vsi *vsi)
1140 {
1141         struct i40e_pf *pf = vsi->back;
1142
1143         if (vsi == pf->vsi[pf->lan_vsi])
1144                 i40e_update_pf_stats(pf);
1145
1146         i40e_update_vsi_stats(vsi);
1147 #ifdef I40E_FCOE
1148         i40e_update_fcoe_stats(vsi);
1149 #endif
1150 }
1151
1152 /**
1153  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1154  * @vsi: the VSI to be searched
1155  * @macaddr: the MAC address
1156  * @vlan: the vlan
1157  * @is_vf: make sure its a VF filter, else doesn't matter
1158  * @is_netdev: make sure its a netdev filter, else doesn't matter
1159  *
1160  * Returns ptr to the filter object or NULL
1161  **/
1162 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1163                                                 u8 *macaddr, s16 vlan,
1164                                                 bool is_vf, bool is_netdev)
1165 {
1166         struct i40e_mac_filter *f;
1167
1168         if (!vsi || !macaddr)
1169                 return NULL;
1170
1171         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1172                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1173                     (vlan == f->vlan)    &&
1174                     (!is_vf || f->is_vf) &&
1175                     (!is_netdev || f->is_netdev))
1176                         return f;
1177         }
1178         return NULL;
1179 }
1180
1181 /**
1182  * i40e_find_mac - Find a mac addr in the macvlan filters list
1183  * @vsi: the VSI to be searched
1184  * @macaddr: the MAC address we are searching for
1185  * @is_vf: make sure its a VF filter, else doesn't matter
1186  * @is_netdev: make sure its a netdev filter, else doesn't matter
1187  *
1188  * Returns the first filter with the provided MAC address or NULL if
1189  * MAC address was not found
1190  **/
1191 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1192                                       bool is_vf, bool is_netdev)
1193 {
1194         struct i40e_mac_filter *f;
1195
1196         if (!vsi || !macaddr)
1197                 return NULL;
1198
1199         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1200                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1201                     (!is_vf || f->is_vf) &&
1202                     (!is_netdev || f->is_netdev))
1203                         return f;
1204         }
1205         return NULL;
1206 }
1207
1208 /**
1209  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1210  * @vsi: the VSI to be searched
1211  *
1212  * Returns true if VSI is in vlan mode or false otherwise
1213  **/
1214 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1215 {
1216         struct i40e_mac_filter *f;
1217
1218         /* Only -1 for all the filters denotes not in vlan mode
1219          * so we have to go through all the list in order to make sure
1220          */
1221         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1222                 if (f->vlan >= 0 || vsi->info.pvid)
1223                         return true;
1224         }
1225
1226         return false;
1227 }
1228
1229 /**
1230  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1231  * @vsi: the VSI to be searched
1232  * @macaddr: the mac address to be filtered
1233  * @is_vf: true if it is a VF
1234  * @is_netdev: true if it is a netdev
1235  *
1236  * Goes through all the macvlan filters and adds a
1237  * macvlan filter for each unique vlan that already exists
1238  *
1239  * Returns first filter found on success, else NULL
1240  **/
1241 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1242                                              bool is_vf, bool is_netdev)
1243 {
1244         struct i40e_mac_filter *f;
1245
1246         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1247                 if (vsi->info.pvid)
1248                         f->vlan = le16_to_cpu(vsi->info.pvid);
1249                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1250                                       is_vf, is_netdev)) {
1251                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1252                                              is_vf, is_netdev))
1253                                 return NULL;
1254                 }
1255         }
1256
1257         return list_first_entry_or_null(&vsi->mac_filter_list,
1258                                         struct i40e_mac_filter, list);
1259 }
1260
1261 /**
1262  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1263  * @vsi: the VSI to be searched
1264  * @macaddr: the mac address to be removed
1265  * @is_vf: true if it is a VF
1266  * @is_netdev: true if it is a netdev
1267  *
1268  * Removes a given MAC address from a VSI, regardless of VLAN
1269  *
1270  * Returns 0 for success, or error
1271  **/
1272 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1273                           bool is_vf, bool is_netdev)
1274 {
1275         struct i40e_mac_filter *f = NULL;
1276         int changed = 0;
1277
1278         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1279              "Missing mac_filter_list_lock\n");
1280         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1281                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1282                     (is_vf == f->is_vf) &&
1283                     (is_netdev == f->is_netdev)) {
1284                         f->counter--;
1285                         f->changed = true;
1286                         changed = 1;
1287                 }
1288         }
1289         if (changed) {
1290                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1291                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1292                 return 0;
1293         }
1294         return -ENOENT;
1295 }
1296
1297 /**
1298  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1299  * @vsi: the PF Main VSI - inappropriate for any other VSI
1300  * @macaddr: the MAC address
1301  *
1302  * Some older firmware configurations set up a default promiscuous VLAN
1303  * filter that needs to be removed.
1304  **/
1305 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1306 {
1307         struct i40e_aqc_remove_macvlan_element_data element;
1308         struct i40e_pf *pf = vsi->back;
1309         i40e_status ret;
1310
1311         /* Only appropriate for the PF main VSI */
1312         if (vsi->type != I40E_VSI_MAIN)
1313                 return -EINVAL;
1314
1315         memset(&element, 0, sizeof(element));
1316         ether_addr_copy(element.mac_addr, macaddr);
1317         element.vlan_tag = 0;
1318         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1319                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1320         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1321         if (ret)
1322                 return -ENOENT;
1323
1324         return 0;
1325 }
1326
1327 /**
1328  * i40e_add_filter - Add a mac/vlan filter to the VSI
1329  * @vsi: the VSI to be searched
1330  * @macaddr: the MAC address
1331  * @vlan: the vlan
1332  * @is_vf: make sure its a VF filter, else doesn't matter
1333  * @is_netdev: make sure its a netdev filter, else doesn't matter
1334  *
1335  * Returns ptr to the filter object or NULL when no memory available.
1336  *
1337  * NOTE: This function is expected to be called with mac_filter_list_lock
1338  * being held.
1339  **/
1340 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1341                                         u8 *macaddr, s16 vlan,
1342                                         bool is_vf, bool is_netdev)
1343 {
1344         struct i40e_mac_filter *f;
1345
1346         if (!vsi || !macaddr)
1347                 return NULL;
1348
1349         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1350         if (!f) {
1351                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1352                 if (!f)
1353                         goto add_filter_out;
1354
1355                 ether_addr_copy(f->macaddr, macaddr);
1356                 f->vlan = vlan;
1357                 f->changed = true;
1358
1359                 INIT_LIST_HEAD(&f->list);
1360                 list_add(&f->list, &vsi->mac_filter_list);
1361         }
1362
1363         /* increment counter and add a new flag if needed */
1364         if (is_vf) {
1365                 if (!f->is_vf) {
1366                         f->is_vf = true;
1367                         f->counter++;
1368                 }
1369         } else if (is_netdev) {
1370                 if (!f->is_netdev) {
1371                         f->is_netdev = true;
1372                         f->counter++;
1373                 }
1374         } else {
1375                 f->counter++;
1376         }
1377
1378         /* changed tells sync_filters_subtask to
1379          * push the filter down to the firmware
1380          */
1381         if (f->changed) {
1382                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1383                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1384         }
1385
1386 add_filter_out:
1387         return f;
1388 }
1389
1390 /**
1391  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1392  * @vsi: the VSI to be searched
1393  * @macaddr: the MAC address
1394  * @vlan: the vlan
1395  * @is_vf: make sure it's a VF filter, else doesn't matter
1396  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1397  *
1398  * NOTE: This function is expected to be called with mac_filter_list_lock
1399  * being held.
1400  **/
1401 void i40e_del_filter(struct i40e_vsi *vsi,
1402                      u8 *macaddr, s16 vlan,
1403                      bool is_vf, bool is_netdev)
1404 {
1405         struct i40e_mac_filter *f;
1406
1407         if (!vsi || !macaddr)
1408                 return;
1409
1410         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1411         if (!f || f->counter == 0)
1412                 return;
1413
1414         if (is_vf) {
1415                 if (f->is_vf) {
1416                         f->is_vf = false;
1417                         f->counter--;
1418                 }
1419         } else if (is_netdev) {
1420                 if (f->is_netdev) {
1421                         f->is_netdev = false;
1422                         f->counter--;
1423                 }
1424         } else {
1425                 /* make sure we don't remove a filter in use by VF or netdev */
1426                 int min_f = 0;
1427
1428                 min_f += (f->is_vf ? 1 : 0);
1429                 min_f += (f->is_netdev ? 1 : 0);
1430
1431                 if (f->counter > min_f)
1432                         f->counter--;
1433         }
1434
1435         /* counter == 0 tells sync_filters_subtask to
1436          * remove the filter from the firmware's list
1437          */
1438         if (f->counter == 0) {
1439                 f->changed = true;
1440                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1441                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1442         }
1443 }
1444
1445 /**
1446  * i40e_set_mac - NDO callback to set mac address
1447  * @netdev: network interface device structure
1448  * @p: pointer to an address structure
1449  *
1450  * Returns 0 on success, negative on failure
1451  **/
1452 #ifdef I40E_FCOE
1453 int i40e_set_mac(struct net_device *netdev, void *p)
1454 #else
1455 static int i40e_set_mac(struct net_device *netdev, void *p)
1456 #endif
1457 {
1458         struct i40e_netdev_priv *np = netdev_priv(netdev);
1459         struct i40e_vsi *vsi = np->vsi;
1460         struct i40e_pf *pf = vsi->back;
1461         struct i40e_hw *hw = &pf->hw;
1462         struct sockaddr *addr = p;
1463         struct i40e_mac_filter *f;
1464
1465         if (!is_valid_ether_addr(addr->sa_data))
1466                 return -EADDRNOTAVAIL;
1467
1468         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1469                 netdev_info(netdev, "already using mac address %pM\n",
1470                             addr->sa_data);
1471                 return 0;
1472         }
1473
1474         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1475             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1476                 return -EADDRNOTAVAIL;
1477
1478         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1479                 netdev_info(netdev, "returning to hw mac address %pM\n",
1480                             hw->mac.addr);
1481         else
1482                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1483
1484         if (vsi->type == I40E_VSI_MAIN) {
1485                 i40e_status ret;
1486
1487                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1488                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1489                                                 addr->sa_data, NULL);
1490                 if (ret) {
1491                         netdev_info(netdev,
1492                                     "Addr change for Main VSI failed: %d\n",
1493                                     ret);
1494                         return -EADDRNOTAVAIL;
1495                 }
1496         }
1497
1498         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1499                 struct i40e_aqc_remove_macvlan_element_data element;
1500
1501                 memset(&element, 0, sizeof(element));
1502                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1503                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1504                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1505         } else {
1506                 spin_lock_bh(&vsi->mac_filter_list_lock);
1507                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1508                                 false, false);
1509                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1510         }
1511
1512         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1513                 struct i40e_aqc_add_macvlan_element_data element;
1514
1515                 memset(&element, 0, sizeof(element));
1516                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1517                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1518                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1519         } else {
1520                 spin_lock_bh(&vsi->mac_filter_list_lock);
1521                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1522                                     false, false);
1523                 if (f)
1524                         f->is_laa = true;
1525                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1526         }
1527
1528         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1529
1530         return i40e_sync_vsi_filters(vsi);
1531 }
1532
1533 /**
1534  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1535  * @vsi: the VSI being setup
1536  * @ctxt: VSI context structure
1537  * @enabled_tc: Enabled TCs bitmap
1538  * @is_add: True if called before Add VSI
1539  *
1540  * Setup VSI queue mapping for enabled traffic classes.
1541  **/
1542 #ifdef I40E_FCOE
1543 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1544                               struct i40e_vsi_context *ctxt,
1545                               u8 enabled_tc,
1546                               bool is_add)
1547 #else
1548 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1549                                      struct i40e_vsi_context *ctxt,
1550                                      u8 enabled_tc,
1551                                      bool is_add)
1552 #endif
1553 {
1554         struct i40e_pf *pf = vsi->back;
1555         u16 sections = 0;
1556         u8 netdev_tc = 0;
1557         u16 numtc = 0;
1558         u16 qcount;
1559         u8 offset;
1560         u16 qmap;
1561         int i;
1562         u16 num_tc_qps = 0;
1563
1564         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1565         offset = 0;
1566
1567         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1568                 /* Find numtc from enabled TC bitmap */
1569                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1570                         if (enabled_tc & BIT(i)) /* TC is enabled */
1571                                 numtc++;
1572                 }
1573                 if (!numtc) {
1574                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1575                         numtc = 1;
1576                 }
1577         } else {
1578                 /* At least TC0 is enabled in case of non-DCB case */
1579                 numtc = 1;
1580         }
1581
1582         vsi->tc_config.numtc = numtc;
1583         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1584         /* Number of queues per enabled TC */
1585         /* In MFP case we can have a much lower count of MSIx
1586          * vectors available and so we need to lower the used
1587          * q count.
1588          */
1589         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1590                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1591         else
1592                 qcount = vsi->alloc_queue_pairs;
1593         num_tc_qps = qcount / numtc;
1594         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1595
1596         /* Setup queue offset/count for all TCs for given VSI */
1597         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1598                 /* See if the given TC is enabled for the given VSI */
1599                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1600                         /* TC is enabled */
1601                         int pow, num_qps;
1602
1603                         switch (vsi->type) {
1604                         case I40E_VSI_MAIN:
1605                                 qcount = min_t(int, pf->alloc_rss_size,
1606                                                num_tc_qps);
1607                                 break;
1608 #ifdef I40E_FCOE
1609                         case I40E_VSI_FCOE:
1610                                 qcount = num_tc_qps;
1611                                 break;
1612 #endif
1613                         case I40E_VSI_FDIR:
1614                         case I40E_VSI_SRIOV:
1615                         case I40E_VSI_VMDQ2:
1616                         default:
1617                                 qcount = num_tc_qps;
1618                                 WARN_ON(i != 0);
1619                                 break;
1620                         }
1621                         vsi->tc_config.tc_info[i].qoffset = offset;
1622                         vsi->tc_config.tc_info[i].qcount = qcount;
1623
1624                         /* find the next higher power-of-2 of num queue pairs */
1625                         num_qps = qcount;
1626                         pow = 0;
1627                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1628                                 pow++;
1629                                 num_qps >>= 1;
1630                         }
1631
1632                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1633                         qmap =
1634                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1635                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1636
1637                         offset += qcount;
1638                 } else {
1639                         /* TC is not enabled so set the offset to
1640                          * default queue and allocate one queue
1641                          * for the given TC.
1642                          */
1643                         vsi->tc_config.tc_info[i].qoffset = 0;
1644                         vsi->tc_config.tc_info[i].qcount = 1;
1645                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1646
1647                         qmap = 0;
1648                 }
1649                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1650         }
1651
1652         /* Set actual Tx/Rx queue pairs */
1653         vsi->num_queue_pairs = offset;
1654         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1655                 if (vsi->req_queue_pairs > 0)
1656                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1657                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1658                         vsi->num_queue_pairs = pf->num_lan_msix;
1659         }
1660
1661         /* Scheduler section valid can only be set for ADD VSI */
1662         if (is_add) {
1663                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1664
1665                 ctxt->info.up_enable_bits = enabled_tc;
1666         }
1667         if (vsi->type == I40E_VSI_SRIOV) {
1668                 ctxt->info.mapping_flags |=
1669                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1670                 for (i = 0; i < vsi->num_queue_pairs; i++)
1671                         ctxt->info.queue_mapping[i] =
1672                                                cpu_to_le16(vsi->base_queue + i);
1673         } else {
1674                 ctxt->info.mapping_flags |=
1675                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1676                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1677         }
1678         ctxt->info.valid_sections |= cpu_to_le16(sections);
1679 }
1680
1681 /**
1682  * i40e_set_rx_mode - NDO callback to set the netdev filters
1683  * @netdev: network interface device structure
1684  **/
1685 #ifdef I40E_FCOE
1686 void i40e_set_rx_mode(struct net_device *netdev)
1687 #else
1688 static void i40e_set_rx_mode(struct net_device *netdev)
1689 #endif
1690 {
1691         struct i40e_netdev_priv *np = netdev_priv(netdev);
1692         struct i40e_mac_filter *f, *ftmp;
1693         struct i40e_vsi *vsi = np->vsi;
1694         struct netdev_hw_addr *uca;
1695         struct netdev_hw_addr *mca;
1696         struct netdev_hw_addr *ha;
1697
1698         spin_lock_bh(&vsi->mac_filter_list_lock);
1699
1700         /* add addr if not already in the filter list */
1701         netdev_for_each_uc_addr(uca, netdev) {
1702                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1703                         if (i40e_is_vsi_in_vlan(vsi))
1704                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1705                                                      false, true);
1706                         else
1707                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1708                                                 false, true);
1709                 }
1710         }
1711
1712         netdev_for_each_mc_addr(mca, netdev) {
1713                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1714                         if (i40e_is_vsi_in_vlan(vsi))
1715                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1716                                                      false, true);
1717                         else
1718                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1719                                                 false, true);
1720                 }
1721         }
1722
1723         /* remove filter if not in netdev list */
1724         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1725
1726                 if (!f->is_netdev)
1727                         continue;
1728
1729                 netdev_for_each_mc_addr(mca, netdev)
1730                         if (ether_addr_equal(mca->addr, f->macaddr))
1731                                 goto bottom_of_search_loop;
1732
1733                 netdev_for_each_uc_addr(uca, netdev)
1734                         if (ether_addr_equal(uca->addr, f->macaddr))
1735                                 goto bottom_of_search_loop;
1736
1737                 for_each_dev_addr(netdev, ha)
1738                         if (ether_addr_equal(ha->addr, f->macaddr))
1739                                 goto bottom_of_search_loop;
1740
1741                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1742                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1743
1744 bottom_of_search_loop:
1745                 continue;
1746         }
1747         spin_unlock_bh(&vsi->mac_filter_list_lock);
1748
1749         /* check for other flag changes */
1750         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1751                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1752                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1753         }
1754 }
1755
1756 /**
1757  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1758  * @src: source MAC filter entry to be clones
1759  *
1760  * Returns the pointer to newly cloned MAC filter entry or NULL
1761  * in case of error
1762  **/
1763 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1764                                         struct i40e_mac_filter *src)
1765 {
1766         struct i40e_mac_filter *f;
1767
1768         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1769         if (!f)
1770                 return NULL;
1771         *f = *src;
1772
1773         INIT_LIST_HEAD(&f->list);
1774
1775         return f;
1776 }
1777
1778 /**
1779  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1780  * @vsi: pointer to vsi struct
1781  * @from: Pointer to list which contains MAC filter entries - changes to
1782  *        those entries needs to be undone.
1783  *
1784  * MAC filter entries from list were slated to be removed from device.
1785  **/
1786 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1787                                          struct list_head *from)
1788 {
1789         struct i40e_mac_filter *f, *ftmp;
1790
1791         list_for_each_entry_safe(f, ftmp, from, list) {
1792                 f->changed = true;
1793                 /* Move the element back into MAC filter list*/
1794                 list_move_tail(&f->list, &vsi->mac_filter_list);
1795         }
1796 }
1797
1798 /**
1799  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1800  * @vsi: pointer to vsi struct
1801  *
1802  * MAC filter entries from list were slated to be added from device.
1803  **/
1804 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1805 {
1806         struct i40e_mac_filter *f, *ftmp;
1807
1808         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1809                 if (!f->changed && f->counter)
1810                         f->changed = true;
1811         }
1812 }
1813
1814 /**
1815  * i40e_cleanup_add_list - Deletes the element from add list and release
1816  *                      memory
1817  * @add_list: Pointer to list which contains MAC filter entries
1818  **/
1819 static void i40e_cleanup_add_list(struct list_head *add_list)
1820 {
1821         struct i40e_mac_filter *f, *ftmp;
1822
1823         list_for_each_entry_safe(f, ftmp, add_list, list) {
1824                 list_del(&f->list);
1825                 kfree(f);
1826         }
1827 }
1828
1829 /**
1830  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1831  * @vsi: ptr to the VSI
1832  *
1833  * Push any outstanding VSI filter changes through the AdminQ.
1834  *
1835  * Returns 0 or error value
1836  **/
1837 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1838 {
1839         struct list_head tmp_del_list, tmp_add_list;
1840         struct i40e_mac_filter *f, *ftmp, *fclone;
1841         bool promisc_forced_on = false;
1842         bool add_happened = false;
1843         int filter_list_len = 0;
1844         u32 changed_flags = 0;
1845         i40e_status aq_ret = 0;
1846         bool err_cond = false;
1847         int retval = 0;
1848         struct i40e_pf *pf;
1849         int num_add = 0;
1850         int num_del = 0;
1851         int aq_err = 0;
1852         u16 cmd_flags;
1853
1854         /* empty array typed pointers, kcalloc later */
1855         struct i40e_aqc_add_macvlan_element_data *add_list;
1856         struct i40e_aqc_remove_macvlan_element_data *del_list;
1857
1858         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1859                 usleep_range(1000, 2000);
1860         pf = vsi->back;
1861
1862         if (vsi->netdev) {
1863                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1864                 vsi->current_netdev_flags = vsi->netdev->flags;
1865         }
1866
1867         INIT_LIST_HEAD(&tmp_del_list);
1868         INIT_LIST_HEAD(&tmp_add_list);
1869
1870         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1871                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1872
1873                 spin_lock_bh(&vsi->mac_filter_list_lock);
1874                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1875                         if (!f->changed)
1876                                 continue;
1877
1878                         if (f->counter != 0)
1879                                 continue;
1880                         f->changed = false;
1881
1882                         /* Move the element into temporary del_list */
1883                         list_move_tail(&f->list, &tmp_del_list);
1884                 }
1885
1886                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1887                         if (!f->changed)
1888                                 continue;
1889
1890                         if (f->counter == 0)
1891                                 continue;
1892                         f->changed = false;
1893
1894                         /* Clone MAC filter entry and add into temporary list */
1895                         fclone = i40e_mac_filter_entry_clone(f);
1896                         if (!fclone) {
1897                                 err_cond = true;
1898                                 break;
1899                         }
1900                         list_add_tail(&fclone->list, &tmp_add_list);
1901                 }
1902
1903                 /* if failed to clone MAC filter entry - undo */
1904                 if (err_cond) {
1905                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1906                         i40e_undo_add_filter_entries(vsi);
1907                 }
1908                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1909
1910                 if (err_cond) {
1911                         i40e_cleanup_add_list(&tmp_add_list);
1912                         retval = -ENOMEM;
1913                         goto out;
1914                 }
1915         }
1916
1917         /* Now process 'del_list' outside the lock */
1918         if (!list_empty(&tmp_del_list)) {
1919                 int del_list_size;
1920
1921                 filter_list_len = pf->hw.aq.asq_buf_size /
1922                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1923                 del_list_size = filter_list_len *
1924                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1925                 del_list = kzalloc(del_list_size, GFP_KERNEL);
1926                 if (!del_list) {
1927                         i40e_cleanup_add_list(&tmp_add_list);
1928
1929                         /* Undo VSI's MAC filter entry element updates */
1930                         spin_lock_bh(&vsi->mac_filter_list_lock);
1931                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1932                         i40e_undo_add_filter_entries(vsi);
1933                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1934                         retval = -ENOMEM;
1935                         goto out;
1936                 }
1937
1938                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1939                         cmd_flags = 0;
1940
1941                         /* add to delete list */
1942                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1943                         del_list[num_del].vlan_tag =
1944                                 cpu_to_le16((u16)(f->vlan ==
1945                                             I40E_VLAN_ANY ? 0 : f->vlan));
1946
1947                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1948                         del_list[num_del].flags = cmd_flags;
1949                         num_del++;
1950
1951                         /* flush a full buffer */
1952                         if (num_del == filter_list_len) {
1953                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1954                                                                 vsi->seid,
1955                                                                 del_list,
1956                                                                 num_del,
1957                                                                 NULL);
1958                                 aq_err = pf->hw.aq.asq_last_status;
1959                                 num_del = 0;
1960                                 memset(del_list, 0, del_list_size);
1961
1962                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1963                                         retval = -EIO;
1964                                         dev_err(&pf->pdev->dev,
1965                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1966                                                 i40e_stat_str(&pf->hw, aq_ret),
1967                                                 i40e_aq_str(&pf->hw, aq_err));
1968                                 }
1969                         }
1970                         /* Release memory for MAC filter entries which were
1971                          * synced up with HW.
1972                          */
1973                         list_del(&f->list);
1974                         kfree(f);
1975                 }
1976
1977                 if (num_del) {
1978                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1979                                                         del_list, num_del,
1980                                                         NULL);
1981                         aq_err = pf->hw.aq.asq_last_status;
1982                         num_del = 0;
1983
1984                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1985                                 dev_info(&pf->pdev->dev,
1986                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1987                                          i40e_stat_str(&pf->hw, aq_ret),
1988                                          i40e_aq_str(&pf->hw, aq_err));
1989                 }
1990
1991                 kfree(del_list);
1992                 del_list = NULL;
1993         }
1994
1995         if (!list_empty(&tmp_add_list)) {
1996                 int add_list_size;
1997
1998                 /* do all the adds now */
1999                 filter_list_len = pf->hw.aq.asq_buf_size /
2000                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2001                 add_list_size = filter_list_len *
2002                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2003                 add_list = kzalloc(add_list_size, GFP_KERNEL);
2004                 if (!add_list) {
2005                         /* Purge element from temporary lists */
2006                         i40e_cleanup_add_list(&tmp_add_list);
2007
2008                         /* Undo add filter entries from VSI MAC filter list */
2009                         spin_lock_bh(&vsi->mac_filter_list_lock);
2010                         i40e_undo_add_filter_entries(vsi);
2011                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2012                         retval = -ENOMEM;
2013                         goto out;
2014                 }
2015
2016                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2017
2018                         add_happened = true;
2019                         cmd_flags = 0;
2020
2021                         /* add to add array */
2022                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2023                         add_list[num_add].vlan_tag =
2024                                 cpu_to_le16(
2025                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2026                         add_list[num_add].queue_number = 0;
2027
2028                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2029                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2030                         num_add++;
2031
2032                         /* flush a full buffer */
2033                         if (num_add == filter_list_len) {
2034                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2035                                                              add_list, num_add,
2036                                                              NULL);
2037                                 aq_err = pf->hw.aq.asq_last_status;
2038                                 num_add = 0;
2039
2040                                 if (aq_ret)
2041                                         break;
2042                                 memset(add_list, 0, add_list_size);
2043                         }
2044                         /* Entries from tmp_add_list were cloned from MAC
2045                          * filter list, hence clean those cloned entries
2046                          */
2047                         list_del(&f->list);
2048                         kfree(f);
2049                 }
2050
2051                 if (num_add) {
2052                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2053                                                      add_list, num_add, NULL);
2054                         aq_err = pf->hw.aq.asq_last_status;
2055                         num_add = 0;
2056                 }
2057                 kfree(add_list);
2058                 add_list = NULL;
2059
2060                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2061                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2062                         dev_info(&pf->pdev->dev,
2063                                  "add filter failed, err %s aq_err %s\n",
2064                                  i40e_stat_str(&pf->hw, aq_ret),
2065                                  i40e_aq_str(&pf->hw, aq_err));
2066                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2067                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2068                                       &vsi->state)) {
2069                                 promisc_forced_on = true;
2070                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2071                                         &vsi->state);
2072                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2073                         }
2074                 }
2075         }
2076
2077         /* check for changes in promiscuous modes */
2078         if (changed_flags & IFF_ALLMULTI) {
2079                 bool cur_multipromisc;
2080
2081                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2082                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2083                                                                vsi->seid,
2084                                                                cur_multipromisc,
2085                                                                NULL);
2086                 if (aq_ret) {
2087                         retval = i40e_aq_rc_to_posix(aq_ret,
2088                                                      pf->hw.aq.asq_last_status);
2089                         dev_info(&pf->pdev->dev,
2090                                  "set multi promisc failed, err %s aq_err %s\n",
2091                                  i40e_stat_str(&pf->hw, aq_ret),
2092                                  i40e_aq_str(&pf->hw,
2093                                              pf->hw.aq.asq_last_status));
2094                 }
2095         }
2096         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2097                 bool cur_promisc;
2098
2099                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2100                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2101                                         &vsi->state));
2102                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2103                         /* set defport ON for Main VSI instead of true promisc
2104                          * this way we will get all unicast/multicast and VLAN
2105                          * promisc behavior but will not get VF or VMDq traffic
2106                          * replicated on the Main VSI.
2107                          */
2108                         if (pf->cur_promisc != cur_promisc) {
2109                                 pf->cur_promisc = cur_promisc;
2110                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2111                         }
2112                 } else {
2113                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2114                                                           &vsi->back->hw,
2115                                                           vsi->seid,
2116                                                           cur_promisc, NULL);
2117                         if (aq_ret) {
2118                                 retval =
2119                                 i40e_aq_rc_to_posix(aq_ret,
2120                                                     pf->hw.aq.asq_last_status);
2121                                 dev_info(&pf->pdev->dev,
2122                                          "set unicast promisc failed, err %d, aq_err %d\n",
2123                                          aq_ret, pf->hw.aq.asq_last_status);
2124                         }
2125                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2126                                                           &vsi->back->hw,
2127                                                           vsi->seid,
2128                                                           cur_promisc, NULL);
2129                         if (aq_ret) {
2130                                 retval =
2131                                 i40e_aq_rc_to_posix(aq_ret,
2132                                                     pf->hw.aq.asq_last_status);
2133                                 dev_info(&pf->pdev->dev,
2134                                          "set multicast promisc failed, err %d, aq_err %d\n",
2135                                          aq_ret, pf->hw.aq.asq_last_status);
2136                         }
2137                 }
2138                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2139                                                    vsi->seid,
2140                                                    cur_promisc, NULL);
2141                 if (aq_ret) {
2142                         retval = i40e_aq_rc_to_posix(aq_ret,
2143                                                      pf->hw.aq.asq_last_status);
2144                         dev_info(&pf->pdev->dev,
2145                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2146                                  i40e_stat_str(&pf->hw, aq_ret),
2147                                  i40e_aq_str(&pf->hw,
2148                                              pf->hw.aq.asq_last_status));
2149                 }
2150         }
2151 out:
2152         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2153         return retval;
2154 }
2155
2156 /**
2157  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2158  * @pf: board private structure
2159  **/
2160 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2161 {
2162         int v;
2163
2164         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2165                 return;
2166         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2167
2168         for (v = 0; v < pf->num_alloc_vsi; v++) {
2169                 if (pf->vsi[v] &&
2170                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2171                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2172
2173                         if (ret) {
2174                                 /* come back and try again later */
2175                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2176                                 break;
2177                         }
2178                 }
2179         }
2180 }
2181
2182 /**
2183  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2184  * @netdev: network interface device structure
2185  * @new_mtu: new value for maximum frame size
2186  *
2187  * Returns 0 on success, negative on failure
2188  **/
2189 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2190 {
2191         struct i40e_netdev_priv *np = netdev_priv(netdev);
2192         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2193         struct i40e_vsi *vsi = np->vsi;
2194
2195         /* MTU < 68 is an error and causes problems on some kernels */
2196         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2197                 return -EINVAL;
2198
2199         netdev_info(netdev, "changing MTU from %d to %d\n",
2200                     netdev->mtu, new_mtu);
2201         netdev->mtu = new_mtu;
2202         if (netif_running(netdev))
2203                 i40e_vsi_reinit_locked(vsi);
2204
2205         return 0;
2206 }
2207
2208 /**
2209  * i40e_ioctl - Access the hwtstamp interface
2210  * @netdev: network interface device structure
2211  * @ifr: interface request data
2212  * @cmd: ioctl command
2213  **/
2214 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2215 {
2216         struct i40e_netdev_priv *np = netdev_priv(netdev);
2217         struct i40e_pf *pf = np->vsi->back;
2218
2219         switch (cmd) {
2220         case SIOCGHWTSTAMP:
2221                 return i40e_ptp_get_ts_config(pf, ifr);
2222         case SIOCSHWTSTAMP:
2223                 return i40e_ptp_set_ts_config(pf, ifr);
2224         default:
2225                 return -EOPNOTSUPP;
2226         }
2227 }
2228
2229 /**
2230  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2231  * @vsi: the vsi being adjusted
2232  **/
2233 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2234 {
2235         struct i40e_vsi_context ctxt;
2236         i40e_status ret;
2237
2238         if ((vsi->info.valid_sections &
2239              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2240             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2241                 return;  /* already enabled */
2242
2243         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2244         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2245                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2246
2247         ctxt.seid = vsi->seid;
2248         ctxt.info = vsi->info;
2249         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2250         if (ret) {
2251                 dev_info(&vsi->back->pdev->dev,
2252                          "update vlan stripping failed, err %s aq_err %s\n",
2253                          i40e_stat_str(&vsi->back->hw, ret),
2254                          i40e_aq_str(&vsi->back->hw,
2255                                      vsi->back->hw.aq.asq_last_status));
2256         }
2257 }
2258
2259 /**
2260  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2261  * @vsi: the vsi being adjusted
2262  **/
2263 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2264 {
2265         struct i40e_vsi_context ctxt;
2266         i40e_status ret;
2267
2268         if ((vsi->info.valid_sections &
2269              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2270             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2271              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2272                 return;  /* already disabled */
2273
2274         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2275         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2276                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2277
2278         ctxt.seid = vsi->seid;
2279         ctxt.info = vsi->info;
2280         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2281         if (ret) {
2282                 dev_info(&vsi->back->pdev->dev,
2283                          "update vlan stripping failed, err %s aq_err %s\n",
2284                          i40e_stat_str(&vsi->back->hw, ret),
2285                          i40e_aq_str(&vsi->back->hw,
2286                                      vsi->back->hw.aq.asq_last_status));
2287         }
2288 }
2289
2290 /**
2291  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2292  * @netdev: network interface to be adjusted
2293  * @features: netdev features to test if VLAN offload is enabled or not
2294  **/
2295 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2296 {
2297         struct i40e_netdev_priv *np = netdev_priv(netdev);
2298         struct i40e_vsi *vsi = np->vsi;
2299
2300         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2301                 i40e_vlan_stripping_enable(vsi);
2302         else
2303                 i40e_vlan_stripping_disable(vsi);
2304 }
2305
2306 /**
2307  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2308  * @vsi: the vsi being configured
2309  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2310  **/
2311 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2312 {
2313         struct i40e_mac_filter *f, *add_f;
2314         bool is_netdev, is_vf;
2315
2316         is_vf = (vsi->type == I40E_VSI_SRIOV);
2317         is_netdev = !!(vsi->netdev);
2318
2319         /* Locked once because all functions invoked below iterates list*/
2320         spin_lock_bh(&vsi->mac_filter_list_lock);
2321
2322         if (is_netdev) {
2323                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2324                                         is_vf, is_netdev);
2325                 if (!add_f) {
2326                         dev_info(&vsi->back->pdev->dev,
2327                                  "Could not add vlan filter %d for %pM\n",
2328                                  vid, vsi->netdev->dev_addr);
2329                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2330                         return -ENOMEM;
2331                 }
2332         }
2333
2334         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2335                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2336                 if (!add_f) {
2337                         dev_info(&vsi->back->pdev->dev,
2338                                  "Could not add vlan filter %d for %pM\n",
2339                                  vid, f->macaddr);
2340                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2341                         return -ENOMEM;
2342                 }
2343         }
2344
2345         /* Now if we add a vlan tag, make sure to check if it is the first
2346          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2347          * with 0, so we now accept untagged and specified tagged traffic
2348          * (and not any taged and untagged)
2349          */
2350         if (vid > 0) {
2351                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2352                                                   I40E_VLAN_ANY,
2353                                                   is_vf, is_netdev)) {
2354                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2355                                         I40E_VLAN_ANY, is_vf, is_netdev);
2356                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2357                                                 is_vf, is_netdev);
2358                         if (!add_f) {
2359                                 dev_info(&vsi->back->pdev->dev,
2360                                          "Could not add filter 0 for %pM\n",
2361                                          vsi->netdev->dev_addr);
2362                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2363                                 return -ENOMEM;
2364                         }
2365                 }
2366         }
2367
2368         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2369         if (vid > 0 && !vsi->info.pvid) {
2370                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2371                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2372                                               is_vf, is_netdev))
2373                                 continue;
2374                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2375                                         is_vf, is_netdev);
2376                         add_f = i40e_add_filter(vsi, f->macaddr,
2377                                                 0, is_vf, is_netdev);
2378                         if (!add_f) {
2379                                 dev_info(&vsi->back->pdev->dev,
2380                                          "Could not add filter 0 for %pM\n",
2381                                         f->macaddr);
2382                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2383                                 return -ENOMEM;
2384                         }
2385                 }
2386         }
2387
2388         spin_unlock_bh(&vsi->mac_filter_list_lock);
2389
2390         /* schedule our worker thread which will take care of
2391          * applying the new filter changes
2392          */
2393         i40e_service_event_schedule(vsi->back);
2394         return 0;
2395 }
2396
2397 /**
2398  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2399  * @vsi: the vsi being configured
2400  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2401  *
2402  * Return: 0 on success or negative otherwise
2403  **/
2404 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2405 {
2406         struct net_device *netdev = vsi->netdev;
2407         struct i40e_mac_filter *f, *add_f;
2408         bool is_vf, is_netdev;
2409         int filter_count = 0;
2410
2411         is_vf = (vsi->type == I40E_VSI_SRIOV);
2412         is_netdev = !!(netdev);
2413
2414         /* Locked once because all functions invoked below iterates list */
2415         spin_lock_bh(&vsi->mac_filter_list_lock);
2416
2417         if (is_netdev)
2418                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2419
2420         list_for_each_entry(f, &vsi->mac_filter_list, list)
2421                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2422
2423         /* go through all the filters for this VSI and if there is only
2424          * vid == 0 it means there are no other filters, so vid 0 must
2425          * be replaced with -1. This signifies that we should from now
2426          * on accept any traffic (with any tag present, or untagged)
2427          */
2428         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2429                 if (is_netdev) {
2430                         if (f->vlan &&
2431                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2432                                 filter_count++;
2433                 }
2434
2435                 if (f->vlan)
2436                         filter_count++;
2437         }
2438
2439         if (!filter_count && is_netdev) {
2440                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2441                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2442                                     is_vf, is_netdev);
2443                 if (!f) {
2444                         dev_info(&vsi->back->pdev->dev,
2445                                  "Could not add filter %d for %pM\n",
2446                                  I40E_VLAN_ANY, netdev->dev_addr);
2447                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2448                         return -ENOMEM;
2449                 }
2450         }
2451
2452         if (!filter_count) {
2453                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2454                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2455                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2456                                                 is_vf, is_netdev);
2457                         if (!add_f) {
2458                                 dev_info(&vsi->back->pdev->dev,
2459                                          "Could not add filter %d for %pM\n",
2460                                          I40E_VLAN_ANY, f->macaddr);
2461                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2462                                 return -ENOMEM;
2463                         }
2464                 }
2465         }
2466
2467         spin_unlock_bh(&vsi->mac_filter_list_lock);
2468
2469         /* schedule our worker thread which will take care of
2470          * applying the new filter changes
2471          */
2472         i40e_service_event_schedule(vsi->back);
2473         return 0;
2474 }
2475
2476 /**
2477  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2478  * @netdev: network interface to be adjusted
2479  * @vid: vlan id to be added
2480  *
2481  * net_device_ops implementation for adding vlan ids
2482  **/
2483 #ifdef I40E_FCOE
2484 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2485                          __always_unused __be16 proto, u16 vid)
2486 #else
2487 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2488                                 __always_unused __be16 proto, u16 vid)
2489 #endif
2490 {
2491         struct i40e_netdev_priv *np = netdev_priv(netdev);
2492         struct i40e_vsi *vsi = np->vsi;
2493         int ret = 0;
2494
2495         if (vid > 4095)
2496                 return -EINVAL;
2497
2498         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2499
2500         /* If the network stack called us with vid = 0 then
2501          * it is asking to receive priority tagged packets with
2502          * vlan id 0.  Our HW receives them by default when configured
2503          * to receive untagged packets so there is no need to add an
2504          * extra filter for vlan 0 tagged packets.
2505          */
2506         if (vid)
2507                 ret = i40e_vsi_add_vlan(vsi, vid);
2508
2509         if (!ret && (vid < VLAN_N_VID))
2510                 set_bit(vid, vsi->active_vlans);
2511
2512         return ret;
2513 }
2514
2515 /**
2516  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2517  * @netdev: network interface to be adjusted
2518  * @vid: vlan id to be removed
2519  *
2520  * net_device_ops implementation for removing vlan ids
2521  **/
2522 #ifdef I40E_FCOE
2523 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2524                           __always_unused __be16 proto, u16 vid)
2525 #else
2526 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2527                                  __always_unused __be16 proto, u16 vid)
2528 #endif
2529 {
2530         struct i40e_netdev_priv *np = netdev_priv(netdev);
2531         struct i40e_vsi *vsi = np->vsi;
2532
2533         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2534
2535         /* return code is ignored as there is nothing a user
2536          * can do about failure to remove and a log message was
2537          * already printed from the other function
2538          */
2539         i40e_vsi_kill_vlan(vsi, vid);
2540
2541         clear_bit(vid, vsi->active_vlans);
2542
2543         return 0;
2544 }
2545
2546 /**
2547  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2548  * @vsi: the vsi being brought back up
2549  **/
2550 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2551 {
2552         u16 vid;
2553
2554         if (!vsi->netdev)
2555                 return;
2556
2557         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2558
2559         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2560                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2561                                      vid);
2562 }
2563
2564 /**
2565  * i40e_vsi_add_pvid - Add pvid for the VSI
2566  * @vsi: the vsi being adjusted
2567  * @vid: the vlan id to set as a PVID
2568  **/
2569 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2570 {
2571         struct i40e_vsi_context ctxt;
2572         i40e_status ret;
2573
2574         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2575         vsi->info.pvid = cpu_to_le16(vid);
2576         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2577                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2578                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2579
2580         ctxt.seid = vsi->seid;
2581         ctxt.info = vsi->info;
2582         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2583         if (ret) {
2584                 dev_info(&vsi->back->pdev->dev,
2585                          "add pvid failed, err %s aq_err %s\n",
2586                          i40e_stat_str(&vsi->back->hw, ret),
2587                          i40e_aq_str(&vsi->back->hw,
2588                                      vsi->back->hw.aq.asq_last_status));
2589                 return -ENOENT;
2590         }
2591
2592         return 0;
2593 }
2594
2595 /**
2596  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2597  * @vsi: the vsi being adjusted
2598  *
2599  * Just use the vlan_rx_register() service to put it back to normal
2600  **/
2601 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2602 {
2603         i40e_vlan_stripping_disable(vsi);
2604
2605         vsi->info.pvid = 0;
2606 }
2607
2608 /**
2609  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2610  * @vsi: ptr to the VSI
2611  *
2612  * If this function returns with an error, then it's possible one or
2613  * more of the rings is populated (while the rest are not).  It is the
2614  * callers duty to clean those orphaned rings.
2615  *
2616  * Return 0 on success, negative on failure
2617  **/
2618 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2619 {
2620         int i, err = 0;
2621
2622         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2623                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2624
2625         return err;
2626 }
2627
2628 /**
2629  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2630  * @vsi: ptr to the VSI
2631  *
2632  * Free VSI's transmit software resources
2633  **/
2634 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2635 {
2636         int i;
2637
2638         if (!vsi->tx_rings)
2639                 return;
2640
2641         for (i = 0; i < vsi->num_queue_pairs; i++)
2642                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2643                         i40e_free_tx_resources(vsi->tx_rings[i]);
2644 }
2645
2646 /**
2647  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2648  * @vsi: ptr to the VSI
2649  *
2650  * If this function returns with an error, then it's possible one or
2651  * more of the rings is populated (while the rest are not).  It is the
2652  * callers duty to clean those orphaned rings.
2653  *
2654  * Return 0 on success, negative on failure
2655  **/
2656 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2657 {
2658         int i, err = 0;
2659
2660         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2661                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2662 #ifdef I40E_FCOE
2663         i40e_fcoe_setup_ddp_resources(vsi);
2664 #endif
2665         return err;
2666 }
2667
2668 /**
2669  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2670  * @vsi: ptr to the VSI
2671  *
2672  * Free all receive software resources
2673  **/
2674 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2675 {
2676         int i;
2677
2678         if (!vsi->rx_rings)
2679                 return;
2680
2681         for (i = 0; i < vsi->num_queue_pairs; i++)
2682                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2683                         i40e_free_rx_resources(vsi->rx_rings[i]);
2684 #ifdef I40E_FCOE
2685         i40e_fcoe_free_ddp_resources(vsi);
2686 #endif
2687 }
2688
2689 /**
2690  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2691  * @ring: The Tx ring to configure
2692  *
2693  * This enables/disables XPS for a given Tx descriptor ring
2694  * based on the TCs enabled for the VSI that ring belongs to.
2695  **/
2696 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2697 {
2698         struct i40e_vsi *vsi = ring->vsi;
2699         cpumask_var_t mask;
2700
2701         if (!ring->q_vector || !ring->netdev)
2702                 return;
2703
2704         /* Single TC mode enable XPS */
2705         if (vsi->tc_config.numtc <= 1) {
2706                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2707                         netif_set_xps_queue(ring->netdev,
2708                                             &ring->q_vector->affinity_mask,
2709                                             ring->queue_index);
2710         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2711                 /* Disable XPS to allow selection based on TC */
2712                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2713                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2714                 free_cpumask_var(mask);
2715         }
2716
2717         /* schedule our worker thread which will take care of
2718          * applying the new filter changes
2719          */
2720         i40e_service_event_schedule(vsi->back);
2721 }
2722
2723 /**
2724  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2725  * @ring: The Tx ring to configure
2726  *
2727  * Configure the Tx descriptor ring in the HMC context.
2728  **/
2729 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2730 {
2731         struct i40e_vsi *vsi = ring->vsi;
2732         u16 pf_q = vsi->base_queue + ring->queue_index;
2733         struct i40e_hw *hw = &vsi->back->hw;
2734         struct i40e_hmc_obj_txq tx_ctx;
2735         i40e_status err = 0;
2736         u32 qtx_ctl = 0;
2737
2738         /* some ATR related tx ring init */
2739         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2740                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2741                 ring->atr_count = 0;
2742         } else {
2743                 ring->atr_sample_rate = 0;
2744         }
2745
2746         /* configure XPS */
2747         i40e_config_xps_tx_ring(ring);
2748
2749         /* clear the context structure first */
2750         memset(&tx_ctx, 0, sizeof(tx_ctx));
2751
2752         tx_ctx.new_context = 1;
2753         tx_ctx.base = (ring->dma / 128);
2754         tx_ctx.qlen = ring->count;
2755         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2756                                                I40E_FLAG_FD_ATR_ENABLED));
2757 #ifdef I40E_FCOE
2758         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2759 #endif
2760         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2761         /* FDIR VSI tx ring can still use RS bit and writebacks */
2762         if (vsi->type != I40E_VSI_FDIR)
2763                 tx_ctx.head_wb_ena = 1;
2764         tx_ctx.head_wb_addr = ring->dma +
2765                               (ring->count * sizeof(struct i40e_tx_desc));
2766
2767         /* As part of VSI creation/update, FW allocates certain
2768          * Tx arbitration queue sets for each TC enabled for
2769          * the VSI. The FW returns the handles to these queue
2770          * sets as part of the response buffer to Add VSI,
2771          * Update VSI, etc. AQ commands. It is expected that
2772          * these queue set handles be associated with the Tx
2773          * queues by the driver as part of the TX queue context
2774          * initialization. This has to be done regardless of
2775          * DCB as by default everything is mapped to TC0.
2776          */
2777         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2778         tx_ctx.rdylist_act = 0;
2779
2780         /* clear the context in the HMC */
2781         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2782         if (err) {
2783                 dev_info(&vsi->back->pdev->dev,
2784                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2785                          ring->queue_index, pf_q, err);
2786                 return -ENOMEM;
2787         }
2788
2789         /* set the context in the HMC */
2790         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2791         if (err) {
2792                 dev_info(&vsi->back->pdev->dev,
2793                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2794                          ring->queue_index, pf_q, err);
2795                 return -ENOMEM;
2796         }
2797
2798         /* Now associate this queue with this PCI function */
2799         if (vsi->type == I40E_VSI_VMDQ2) {
2800                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2801                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2802                            I40E_QTX_CTL_VFVM_INDX_MASK;
2803         } else {
2804                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2805         }
2806
2807         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2808                     I40E_QTX_CTL_PF_INDX_MASK);
2809         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2810         i40e_flush(hw);
2811
2812         /* cache tail off for easier writes later */
2813         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2814
2815         return 0;
2816 }
2817
2818 /**
2819  * i40e_configure_rx_ring - Configure a receive ring context
2820  * @ring: The Rx ring to configure
2821  *
2822  * Configure the Rx descriptor ring in the HMC context.
2823  **/
2824 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2825 {
2826         struct i40e_vsi *vsi = ring->vsi;
2827         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2828         u16 pf_q = vsi->base_queue + ring->queue_index;
2829         struct i40e_hw *hw = &vsi->back->hw;
2830         struct i40e_hmc_obj_rxq rx_ctx;
2831         i40e_status err = 0;
2832
2833         ring->state = 0;
2834
2835         /* clear the context structure first */
2836         memset(&rx_ctx, 0, sizeof(rx_ctx));
2837
2838         ring->rx_buf_len = vsi->rx_buf_len;
2839         ring->rx_hdr_len = vsi->rx_hdr_len;
2840
2841         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2842         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2843
2844         rx_ctx.base = (ring->dma / 128);
2845         rx_ctx.qlen = ring->count;
2846
2847         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2848                 set_ring_16byte_desc_enabled(ring);
2849                 rx_ctx.dsize = 0;
2850         } else {
2851                 rx_ctx.dsize = 1;
2852         }
2853
2854         rx_ctx.dtype = vsi->dtype;
2855         if (vsi->dtype) {
2856                 set_ring_ps_enabled(ring);
2857                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2858                                   I40E_RX_SPLIT_IP      |
2859                                   I40E_RX_SPLIT_TCP_UDP |
2860                                   I40E_RX_SPLIT_SCTP;
2861         } else {
2862                 rx_ctx.hsplit_0 = 0;
2863         }
2864
2865         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2866                                   (chain_len * ring->rx_buf_len));
2867         if (hw->revision_id == 0)
2868                 rx_ctx.lrxqthresh = 0;
2869         else
2870                 rx_ctx.lrxqthresh = 2;
2871         rx_ctx.crcstrip = 1;
2872         rx_ctx.l2tsel = 1;
2873         /* this controls whether VLAN is stripped from inner headers */
2874         rx_ctx.showiv = 0;
2875 #ifdef I40E_FCOE
2876         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2877 #endif
2878         /* set the prefena field to 1 because the manual says to */
2879         rx_ctx.prefena = 1;
2880
2881         /* clear the context in the HMC */
2882         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2883         if (err) {
2884                 dev_info(&vsi->back->pdev->dev,
2885                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2886                          ring->queue_index, pf_q, err);
2887                 return -ENOMEM;
2888         }
2889
2890         /* set the context in the HMC */
2891         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2892         if (err) {
2893                 dev_info(&vsi->back->pdev->dev,
2894                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2895                          ring->queue_index, pf_q, err);
2896                 return -ENOMEM;
2897         }
2898
2899         /* cache tail for quicker writes, and clear the reg before use */
2900         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2901         writel(0, ring->tail);
2902
2903         if (ring_is_ps_enabled(ring)) {
2904                 i40e_alloc_rx_headers(ring);
2905                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2906         } else {
2907                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2908         }
2909
2910         return 0;
2911 }
2912
2913 /**
2914  * i40e_vsi_configure_tx - Configure the VSI for Tx
2915  * @vsi: VSI structure describing this set of rings and resources
2916  *
2917  * Configure the Tx VSI for operation.
2918  **/
2919 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2920 {
2921         int err = 0;
2922         u16 i;
2923
2924         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2925                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2926
2927         return err;
2928 }
2929
2930 /**
2931  * i40e_vsi_configure_rx - Configure the VSI for Rx
2932  * @vsi: the VSI being configured
2933  *
2934  * Configure the Rx VSI for operation.
2935  **/
2936 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2937 {
2938         int err = 0;
2939         u16 i;
2940
2941         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2942                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2943                                + ETH_FCS_LEN + VLAN_HLEN;
2944         else
2945                 vsi->max_frame = I40E_RXBUFFER_2048;
2946
2947         /* figure out correct receive buffer length */
2948         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2949                                     I40E_FLAG_RX_PS_ENABLED)) {
2950         case I40E_FLAG_RX_1BUF_ENABLED:
2951                 vsi->rx_hdr_len = 0;
2952                 vsi->rx_buf_len = vsi->max_frame;
2953                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2954                 break;
2955         case I40E_FLAG_RX_PS_ENABLED:
2956                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2957                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2958                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2959                 break;
2960         default:
2961                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2962                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2963                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2964                 break;
2965         }
2966
2967 #ifdef I40E_FCOE
2968         /* setup rx buffer for FCoE */
2969         if ((vsi->type == I40E_VSI_FCOE) &&
2970             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2971                 vsi->rx_hdr_len = 0;
2972                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2973                 vsi->max_frame = I40E_RXBUFFER_3072;
2974                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2975         }
2976
2977 #endif /* I40E_FCOE */
2978         /* round up for the chip's needs */
2979         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2980                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2981         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2982                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2983
2984         /* set up individual rings */
2985         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2986                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2987
2988         return err;
2989 }
2990
2991 /**
2992  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2993  * @vsi: ptr to the VSI
2994  **/
2995 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2996 {
2997         struct i40e_ring *tx_ring, *rx_ring;
2998         u16 qoffset, qcount;
2999         int i, n;
3000
3001         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3002                 /* Reset the TC information */
3003                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3004                         rx_ring = vsi->rx_rings[i];
3005                         tx_ring = vsi->tx_rings[i];
3006                         rx_ring->dcb_tc = 0;
3007                         tx_ring->dcb_tc = 0;
3008                 }
3009         }
3010
3011         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3012                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3013                         continue;
3014
3015                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3016                 qcount = vsi->tc_config.tc_info[n].qcount;
3017                 for (i = qoffset; i < (qoffset + qcount); i++) {
3018                         rx_ring = vsi->rx_rings[i];
3019                         tx_ring = vsi->tx_rings[i];
3020                         rx_ring->dcb_tc = n;
3021                         tx_ring->dcb_tc = n;
3022                 }
3023         }
3024 }
3025
3026 /**
3027  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3028  * @vsi: ptr to the VSI
3029  **/
3030 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3031 {
3032         if (vsi->netdev)
3033                 i40e_set_rx_mode(vsi->netdev);
3034 }
3035
3036 /**
3037  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3038  * @vsi: Pointer to the targeted VSI
3039  *
3040  * This function replays the hlist on the hw where all the SB Flow Director
3041  * filters were saved.
3042  **/
3043 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3044 {
3045         struct i40e_fdir_filter *filter;
3046         struct i40e_pf *pf = vsi->back;
3047         struct hlist_node *node;
3048
3049         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3050                 return;
3051
3052         hlist_for_each_entry_safe(filter, node,
3053                                   &pf->fdir_filter_list, fdir_node) {
3054                 i40e_add_del_fdir(vsi, filter, true);
3055         }
3056 }
3057
3058 /**
3059  * i40e_vsi_configure - Set up the VSI for action
3060  * @vsi: the VSI being configured
3061  **/
3062 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3063 {
3064         int err;
3065
3066         i40e_set_vsi_rx_mode(vsi);
3067         i40e_restore_vlan(vsi);
3068         i40e_vsi_config_dcb_rings(vsi);
3069         err = i40e_vsi_configure_tx(vsi);
3070         if (!err)
3071                 err = i40e_vsi_configure_rx(vsi);
3072
3073         return err;
3074 }
3075
3076 /**
3077  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3078  * @vsi: the VSI being configured
3079  **/
3080 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3081 {
3082         struct i40e_pf *pf = vsi->back;
3083         struct i40e_hw *hw = &pf->hw;
3084         u16 vector;
3085         int i, q;
3086         u32 qp;
3087
3088         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3089          * and PFINT_LNKLSTn registers, e.g.:
3090          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3091          */
3092         qp = vsi->base_queue;
3093         vector = vsi->base_vector;
3094         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3095                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3096
3097                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3098                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3099                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3100                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3101                      q_vector->rx.itr);
3102                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3103                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3104                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3105                      q_vector->tx.itr);
3106                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3107                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3108
3109                 /* Linked list for the queuepairs assigned to this vector */
3110                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3111                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3112                         u32 val;
3113
3114                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3115                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3116                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3117                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3118                               (I40E_QUEUE_TYPE_TX
3119                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3120
3121                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3122
3123                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3124                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3125                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3126                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3127                               (I40E_QUEUE_TYPE_RX
3128                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3129
3130                         /* Terminate the linked list */
3131                         if (q == (q_vector->num_ringpairs - 1))
3132                                 val |= (I40E_QUEUE_END_OF_LIST
3133                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3134
3135                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3136                         qp++;
3137                 }
3138         }
3139
3140         i40e_flush(hw);
3141 }
3142
3143 /**
3144  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3145  * @hw: ptr to the hardware info
3146  **/
3147 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3148 {
3149         struct i40e_hw *hw = &pf->hw;
3150         u32 val;
3151
3152         /* clear things first */
3153         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3154         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3155
3156         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3157               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3158               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3159               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3160               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3161               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3162               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3163               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3164
3165         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3166                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3167
3168         if (pf->flags & I40E_FLAG_PTP)
3169                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3170
3171         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3172
3173         /* SW_ITR_IDX = 0, but don't change INTENA */
3174         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3175                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3176
3177         /* OTHER_ITR_IDX = 0 */
3178         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3179 }
3180
3181 /**
3182  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3183  * @vsi: the VSI being configured
3184  **/
3185 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3186 {
3187         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3188         struct i40e_pf *pf = vsi->back;
3189         struct i40e_hw *hw = &pf->hw;
3190         u32 val;
3191
3192         /* set the ITR configuration */
3193         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3194         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3195         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3196         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3197         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3198         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3199         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3200
3201         i40e_enable_misc_int_causes(pf);
3202
3203         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3204         wr32(hw, I40E_PFINT_LNKLST0, 0);
3205
3206         /* Associate the queue pair to the vector and enable the queue int */
3207         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3208               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3209               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3210
3211         wr32(hw, I40E_QINT_RQCTL(0), val);
3212
3213         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3214               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3215               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3216
3217         wr32(hw, I40E_QINT_TQCTL(0), val);
3218         i40e_flush(hw);
3219 }
3220
3221 /**
3222  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3223  * @pf: board private structure
3224  **/
3225 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3226 {
3227         struct i40e_hw *hw = &pf->hw;
3228
3229         wr32(hw, I40E_PFINT_DYN_CTL0,
3230              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3231         i40e_flush(hw);
3232 }
3233
3234 /**
3235  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3236  * @pf: board private structure
3237  **/
3238 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3239 {
3240         struct i40e_hw *hw = &pf->hw;
3241         u32 val;
3242
3243         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3244               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3245               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3246
3247         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3248         i40e_flush(hw);
3249 }
3250
3251 /**
3252  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3253  * @vsi: pointer to a vsi
3254  * @vector: disable a particular Hw Interrupt vector
3255  **/
3256 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3257 {
3258         struct i40e_pf *pf = vsi->back;
3259         struct i40e_hw *hw = &pf->hw;
3260         u32 val;
3261
3262         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3263         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3264         i40e_flush(hw);
3265 }
3266
3267 /**
3268  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3269  * @irq: interrupt number
3270  * @data: pointer to a q_vector
3271  **/
3272 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3273 {
3274         struct i40e_q_vector *q_vector = data;
3275
3276         if (!q_vector->tx.ring && !q_vector->rx.ring)
3277                 return IRQ_HANDLED;
3278
3279         napi_schedule_irqoff(&q_vector->napi);
3280
3281         return IRQ_HANDLED;
3282 }
3283
3284 /**
3285  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3286  * @vsi: the VSI being configured
3287  * @basename: name for the vector
3288  *
3289  * Allocates MSI-X vectors and requests interrupts from the kernel.
3290  **/
3291 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3292 {
3293         int q_vectors = vsi->num_q_vectors;
3294         struct i40e_pf *pf = vsi->back;
3295         int base = vsi->base_vector;
3296         int rx_int_idx = 0;
3297         int tx_int_idx = 0;
3298         int vector, err;
3299
3300         for (vector = 0; vector < q_vectors; vector++) {
3301                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3302
3303                 if (q_vector->tx.ring && q_vector->rx.ring) {
3304                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3305                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3306                         tx_int_idx++;
3307                 } else if (q_vector->rx.ring) {
3308                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3309                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3310                 } else if (q_vector->tx.ring) {
3311                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3312                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3313                 } else {
3314                         /* skip this unused q_vector */
3315                         continue;
3316                 }
3317                 err = request_irq(pf->msix_entries[base + vector].vector,
3318                                   vsi->irq_handler,
3319                                   0,
3320                                   q_vector->name,
3321                                   q_vector);
3322                 if (err) {
3323                         dev_info(&pf->pdev->dev,
3324                                  "MSIX request_irq failed, error: %d\n", err);
3325                         goto free_queue_irqs;
3326                 }
3327                 /* assign the mask for this irq */
3328                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3329                                       &q_vector->affinity_mask);
3330         }
3331
3332         vsi->irqs_ready = true;
3333         return 0;
3334
3335 free_queue_irqs:
3336         while (vector) {
3337                 vector--;
3338                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3339                                       NULL);
3340                 free_irq(pf->msix_entries[base + vector].vector,
3341                          &(vsi->q_vectors[vector]));
3342         }
3343         return err;
3344 }
3345
3346 /**
3347  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3348  * @vsi: the VSI being un-configured
3349  **/
3350 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3351 {
3352         struct i40e_pf *pf = vsi->back;
3353         struct i40e_hw *hw = &pf->hw;
3354         int base = vsi->base_vector;
3355         int i;
3356
3357         for (i = 0; i < vsi->num_queue_pairs; i++) {
3358                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3359                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3360         }
3361
3362         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3363                 for (i = vsi->base_vector;
3364                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3365                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3366
3367                 i40e_flush(hw);
3368                 for (i = 0; i < vsi->num_q_vectors; i++)
3369                         synchronize_irq(pf->msix_entries[i + base].vector);
3370         } else {
3371                 /* Legacy and MSI mode - this stops all interrupt handling */
3372                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3373                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3374                 i40e_flush(hw);
3375                 synchronize_irq(pf->pdev->irq);
3376         }
3377 }
3378
3379 /**
3380  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3381  * @vsi: the VSI being configured
3382  **/
3383 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3384 {
3385         struct i40e_pf *pf = vsi->back;
3386         int i;
3387
3388         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3389                 for (i = 0; i < vsi->num_q_vectors; i++)
3390                         i40e_irq_dynamic_enable(vsi, i);
3391         } else {
3392                 i40e_irq_dynamic_enable_icr0(pf);
3393         }
3394
3395         i40e_flush(&pf->hw);
3396         return 0;
3397 }
3398
3399 /**
3400  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3401  * @pf: board private structure
3402  **/
3403 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3404 {
3405         /* Disable ICR 0 */
3406         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3407         i40e_flush(&pf->hw);
3408 }
3409
3410 /**
3411  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3412  * @irq: interrupt number
3413  * @data: pointer to a q_vector
3414  *
3415  * This is the handler used for all MSI/Legacy interrupts, and deals
3416  * with both queue and non-queue interrupts.  This is also used in
3417  * MSIX mode to handle the non-queue interrupts.
3418  **/
3419 static irqreturn_t i40e_intr(int irq, void *data)
3420 {
3421         struct i40e_pf *pf = (struct i40e_pf *)data;
3422         struct i40e_hw *hw = &pf->hw;
3423         irqreturn_t ret = IRQ_NONE;
3424         u32 icr0, icr0_remaining;
3425         u32 val, ena_mask;
3426
3427         icr0 = rd32(hw, I40E_PFINT_ICR0);
3428         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3429
3430         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3431         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3432                 goto enable_intr;
3433
3434         /* if interrupt but no bits showing, must be SWINT */
3435         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3436             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3437                 pf->sw_int_count++;
3438
3439         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3440             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3441                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3442                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3443                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3444         }
3445
3446         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3447         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3448                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3449                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3450
3451                 /* temporarily disable queue cause for NAPI processing */
3452                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3453
3454                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3455                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3456
3457                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3458                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3459                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3460
3461                 if (!test_bit(__I40E_DOWN, &pf->state))
3462                         napi_schedule_irqoff(&q_vector->napi);
3463         }
3464
3465         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3466                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3467                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3468         }
3469
3470         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3471                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3472                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3473         }
3474
3475         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3476                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3477                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3478         }
3479
3480         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3481                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3482                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3483                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3484                 val = rd32(hw, I40E_GLGEN_RSTAT);
3485                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3486                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3487                 if (val == I40E_RESET_CORER) {
3488                         pf->corer_count++;
3489                 } else if (val == I40E_RESET_GLOBR) {
3490                         pf->globr_count++;
3491                 } else if (val == I40E_RESET_EMPR) {
3492                         pf->empr_count++;
3493                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3494                 }
3495         }
3496
3497         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3498                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3499                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3500                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3501                          rd32(hw, I40E_PFHMC_ERRORINFO),
3502                          rd32(hw, I40E_PFHMC_ERRORDATA));
3503         }
3504
3505         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3506                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3507
3508                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3509                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3510                         i40e_ptp_tx_hwtstamp(pf);
3511                 }
3512         }
3513
3514         /* If a critical error is pending we have no choice but to reset the
3515          * device.
3516          * Report and mask out any remaining unexpected interrupts.
3517          */
3518         icr0_remaining = icr0 & ena_mask;
3519         if (icr0_remaining) {
3520                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3521                          icr0_remaining);
3522                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3523                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3524                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3525                         dev_info(&pf->pdev->dev, "device will be reset\n");
3526                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3527                         i40e_service_event_schedule(pf);
3528                 }
3529                 ena_mask &= ~icr0_remaining;
3530         }
3531         ret = IRQ_HANDLED;
3532
3533 enable_intr:
3534         /* re-enable interrupt causes */
3535         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3536         if (!test_bit(__I40E_DOWN, &pf->state)) {
3537                 i40e_service_event_schedule(pf);
3538                 i40e_irq_dynamic_enable_icr0(pf);
3539         }
3540
3541         return ret;
3542 }
3543
3544 /**
3545  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3546  * @tx_ring:  tx ring to clean
3547  * @budget:   how many cleans we're allowed
3548  *
3549  * Returns true if there's any budget left (e.g. the clean is finished)
3550  **/
3551 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3552 {
3553         struct i40e_vsi *vsi = tx_ring->vsi;
3554         u16 i = tx_ring->next_to_clean;
3555         struct i40e_tx_buffer *tx_buf;
3556         struct i40e_tx_desc *tx_desc;
3557
3558         tx_buf = &tx_ring->tx_bi[i];
3559         tx_desc = I40E_TX_DESC(tx_ring, i);
3560         i -= tx_ring->count;
3561
3562         do {
3563                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3564
3565                 /* if next_to_watch is not set then there is no work pending */
3566                 if (!eop_desc)
3567                         break;
3568
3569                 /* prevent any other reads prior to eop_desc */
3570                 read_barrier_depends();
3571
3572                 /* if the descriptor isn't done, no work yet to do */
3573                 if (!(eop_desc->cmd_type_offset_bsz &
3574                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3575                         break;
3576
3577                 /* clear next_to_watch to prevent false hangs */
3578                 tx_buf->next_to_watch = NULL;
3579
3580                 tx_desc->buffer_addr = 0;
3581                 tx_desc->cmd_type_offset_bsz = 0;
3582                 /* move past filter desc */
3583                 tx_buf++;
3584                 tx_desc++;
3585                 i++;
3586                 if (unlikely(!i)) {
3587                         i -= tx_ring->count;
3588                         tx_buf = tx_ring->tx_bi;
3589                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3590                 }
3591                 /* unmap skb header data */
3592                 dma_unmap_single(tx_ring->dev,
3593                                  dma_unmap_addr(tx_buf, dma),
3594                                  dma_unmap_len(tx_buf, len),
3595                                  DMA_TO_DEVICE);
3596                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3597                         kfree(tx_buf->raw_buf);
3598
3599                 tx_buf->raw_buf = NULL;
3600                 tx_buf->tx_flags = 0;
3601                 tx_buf->next_to_watch = NULL;
3602                 dma_unmap_len_set(tx_buf, len, 0);
3603                 tx_desc->buffer_addr = 0;
3604                 tx_desc->cmd_type_offset_bsz = 0;
3605
3606                 /* move us past the eop_desc for start of next FD 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
3616                 /* update budget accounting */
3617                 budget--;
3618         } while (likely(budget));
3619
3620         i += tx_ring->count;
3621         tx_ring->next_to_clean = i;
3622
3623         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3624                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3625
3626         return budget > 0;
3627 }
3628
3629 /**
3630  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3631  * @irq: interrupt number
3632  * @data: pointer to a q_vector
3633  **/
3634 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3635 {
3636         struct i40e_q_vector *q_vector = data;
3637         struct i40e_vsi *vsi;
3638
3639         if (!q_vector->tx.ring)
3640                 return IRQ_HANDLED;
3641
3642         vsi = q_vector->tx.ring->vsi;
3643         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3644
3645         return IRQ_HANDLED;
3646 }
3647
3648 /**
3649  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3650  * @vsi: the VSI being configured
3651  * @v_idx: vector index
3652  * @qp_idx: queue pair index
3653  **/
3654 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3655 {
3656         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3657         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3658         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3659
3660         tx_ring->q_vector = q_vector;
3661         tx_ring->next = q_vector->tx.ring;
3662         q_vector->tx.ring = tx_ring;
3663         q_vector->tx.count++;
3664
3665         rx_ring->q_vector = q_vector;
3666         rx_ring->next = q_vector->rx.ring;
3667         q_vector->rx.ring = rx_ring;
3668         q_vector->rx.count++;
3669 }
3670
3671 /**
3672  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3673  * @vsi: the VSI being configured
3674  *
3675  * This function maps descriptor rings to the queue-specific vectors
3676  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3677  * one vector per queue pair, but on a constrained vector budget, we
3678  * group the queue pairs as "efficiently" as possible.
3679  **/
3680 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3681 {
3682         int qp_remaining = vsi->num_queue_pairs;
3683         int q_vectors = vsi->num_q_vectors;
3684         int num_ringpairs;
3685         int v_start = 0;
3686         int qp_idx = 0;
3687
3688         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3689          * group them so there are multiple queues per vector.
3690          * It is also important to go through all the vectors available to be
3691          * sure that if we don't use all the vectors, that the remaining vectors
3692          * are cleared. This is especially important when decreasing the
3693          * number of queues in use.
3694          */
3695         for (; v_start < q_vectors; v_start++) {
3696                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3697
3698                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3699
3700                 q_vector->num_ringpairs = num_ringpairs;
3701
3702                 q_vector->rx.count = 0;
3703                 q_vector->tx.count = 0;
3704                 q_vector->rx.ring = NULL;
3705                 q_vector->tx.ring = NULL;
3706
3707                 while (num_ringpairs--) {
3708                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3709                         qp_idx++;
3710                         qp_remaining--;
3711                 }
3712         }
3713 }
3714
3715 /**
3716  * i40e_vsi_request_irq - Request IRQ from the OS
3717  * @vsi: the VSI being configured
3718  * @basename: name for the vector
3719  **/
3720 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3721 {
3722         struct i40e_pf *pf = vsi->back;
3723         int err;
3724
3725         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3726                 err = i40e_vsi_request_irq_msix(vsi, basename);
3727         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3728                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3729                                   pf->int_name, pf);
3730         else
3731                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3732                                   pf->int_name, pf);
3733
3734         if (err)
3735                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3736
3737         return err;
3738 }
3739
3740 #ifdef CONFIG_NET_POLL_CONTROLLER
3741 /**
3742  * i40e_netpoll - A Polling 'interrupt'handler
3743  * @netdev: network interface device structure
3744  *
3745  * This is used by netconsole to send skbs without having to re-enable
3746  * interrupts.  It's not called while the normal interrupt routine is executing.
3747  **/
3748 #ifdef I40E_FCOE
3749 void i40e_netpoll(struct net_device *netdev)
3750 #else
3751 static void i40e_netpoll(struct net_device *netdev)
3752 #endif
3753 {
3754         struct i40e_netdev_priv *np = netdev_priv(netdev);
3755         struct i40e_vsi *vsi = np->vsi;
3756         struct i40e_pf *pf = vsi->back;
3757         int i;
3758
3759         /* if interface is down do nothing */
3760         if (test_bit(__I40E_DOWN, &vsi->state))
3761                 return;
3762
3763         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3764                 for (i = 0; i < vsi->num_q_vectors; i++)
3765                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3766         } else {
3767                 i40e_intr(pf->pdev->irq, netdev);
3768         }
3769 }
3770 #endif
3771
3772 /**
3773  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3774  * @pf: the PF being configured
3775  * @pf_q: the PF queue
3776  * @enable: enable or disable state of the queue
3777  *
3778  * This routine will wait for the given Tx queue of the PF to reach the
3779  * enabled or disabled state.
3780  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3781  * multiple retries; else will return 0 in case of success.
3782  **/
3783 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3784 {
3785         int i;
3786         u32 tx_reg;
3787
3788         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3789                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3790                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3791                         break;
3792
3793                 usleep_range(10, 20);
3794         }
3795         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3796                 return -ETIMEDOUT;
3797
3798         return 0;
3799 }
3800
3801 /**
3802  * i40e_vsi_control_tx - Start or stop a VSI's rings
3803  * @vsi: the VSI being configured
3804  * @enable: start or stop the rings
3805  **/
3806 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3807 {
3808         struct i40e_pf *pf = vsi->back;
3809         struct i40e_hw *hw = &pf->hw;
3810         int i, j, pf_q, ret = 0;
3811         u32 tx_reg;
3812
3813         pf_q = vsi->base_queue;
3814         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3815
3816                 /* warn the TX unit of coming changes */
3817                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3818                 if (!enable)
3819                         usleep_range(10, 20);
3820
3821                 for (j = 0; j < 50; j++) {
3822                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3823                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3824                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3825                                 break;
3826                         usleep_range(1000, 2000);
3827                 }
3828                 /* Skip if the queue is already in the requested state */
3829                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3830                         continue;
3831
3832                 /* turn on/off the queue */
3833                 if (enable) {
3834                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3835                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3836                 } else {
3837                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3838                 }
3839
3840                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3841                 /* No waiting for the Tx queue to disable */
3842                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3843                         continue;
3844
3845                 /* wait for the change to finish */
3846                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3847                 if (ret) {
3848                         dev_info(&pf->pdev->dev,
3849                                  "VSI seid %d Tx ring %d %sable timeout\n",
3850                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3851                         break;
3852                 }
3853         }
3854
3855         if (hw->revision_id == 0)
3856                 mdelay(50);
3857         return ret;
3858 }
3859
3860 /**
3861  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3862  * @pf: the PF being configured
3863  * @pf_q: the PF queue
3864  * @enable: enable or disable state of the queue
3865  *
3866  * This routine will wait for the given Rx queue of the PF to reach the
3867  * enabled or disabled state.
3868  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3869  * multiple retries; else will return 0 in case of success.
3870  **/
3871 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3872 {
3873         int i;
3874         u32 rx_reg;
3875
3876         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3877                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3878                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3879                         break;
3880
3881                 usleep_range(10, 20);
3882         }
3883         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3884                 return -ETIMEDOUT;
3885
3886         return 0;
3887 }
3888
3889 /**
3890  * i40e_vsi_control_rx - Start or stop a VSI's rings
3891  * @vsi: the VSI being configured
3892  * @enable: start or stop the rings
3893  **/
3894 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3895 {
3896         struct i40e_pf *pf = vsi->back;
3897         struct i40e_hw *hw = &pf->hw;
3898         int i, j, pf_q, ret = 0;
3899         u32 rx_reg;
3900
3901         pf_q = vsi->base_queue;
3902         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3903                 for (j = 0; j < 50; j++) {
3904                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3905                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3906                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3907                                 break;
3908                         usleep_range(1000, 2000);
3909                 }
3910
3911                 /* Skip if the queue is already in the requested state */
3912                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3913                         continue;
3914
3915                 /* turn on/off the queue */
3916                 if (enable)
3917                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3918                 else
3919                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3920                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3921
3922                 /* wait for the change to finish */
3923                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3924                 if (ret) {
3925                         dev_info(&pf->pdev->dev,
3926                                  "VSI seid %d Rx ring %d %sable timeout\n",
3927                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3928                         break;
3929                 }
3930         }
3931
3932         return ret;
3933 }
3934
3935 /**
3936  * i40e_vsi_control_rings - Start or stop a VSI's rings
3937  * @vsi: the VSI being configured
3938  * @enable: start or stop the rings
3939  **/
3940 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3941 {
3942         int ret = 0;
3943
3944         /* do rx first for enable and last for disable */
3945         if (request) {
3946                 ret = i40e_vsi_control_rx(vsi, request);
3947                 if (ret)
3948                         return ret;
3949                 ret = i40e_vsi_control_tx(vsi, request);
3950         } else {
3951                 /* Ignore return value, we need to shutdown whatever we can */
3952                 i40e_vsi_control_tx(vsi, request);
3953                 i40e_vsi_control_rx(vsi, request);
3954         }
3955
3956         return ret;
3957 }
3958
3959 /**
3960  * i40e_vsi_free_irq - Free the irq association with the OS
3961  * @vsi: the VSI being configured
3962  **/
3963 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3964 {
3965         struct i40e_pf *pf = vsi->back;
3966         struct i40e_hw *hw = &pf->hw;
3967         int base = vsi->base_vector;
3968         u32 val, qp;
3969         int i;
3970
3971         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3972                 if (!vsi->q_vectors)
3973                         return;
3974
3975                 if (!vsi->irqs_ready)
3976                         return;
3977
3978                 vsi->irqs_ready = false;
3979                 for (i = 0; i < vsi->num_q_vectors; i++) {
3980                         u16 vector = i + base;
3981
3982                         /* free only the irqs that were actually requested */
3983                         if (!vsi->q_vectors[i] ||
3984                             !vsi->q_vectors[i]->num_ringpairs)
3985                                 continue;
3986
3987                         /* clear the affinity_mask in the IRQ descriptor */
3988                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3989                                               NULL);
3990                         free_irq(pf->msix_entries[vector].vector,
3991                                  vsi->q_vectors[i]);
3992
3993                         /* Tear down the interrupt queue link list
3994                          *
3995                          * We know that they come in pairs and always
3996                          * the Rx first, then the Tx.  To clear the
3997                          * link list, stick the EOL value into the
3998                          * next_q field of the registers.
3999                          */
4000                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4001                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4002                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4003                         val |= I40E_QUEUE_END_OF_LIST
4004                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4005                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4006
4007                         while (qp != I40E_QUEUE_END_OF_LIST) {
4008                                 u32 next;
4009
4010                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4011
4012                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4013                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4014                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4015                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4016
4017                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4018                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4019
4020                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4021
4022                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4023
4024                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4025                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4026
4027                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4028                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4029                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4030                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4031
4032                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4033                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4034
4035                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4036                                 qp = next;
4037                         }
4038                 }
4039         } else {
4040                 free_irq(pf->pdev->irq, pf);
4041
4042                 val = rd32(hw, I40E_PFINT_LNKLST0);
4043                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4044                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4045                 val |= I40E_QUEUE_END_OF_LIST
4046                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4047                 wr32(hw, I40E_PFINT_LNKLST0, val);
4048
4049                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4050                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4051                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4052                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4053                          I40E_QINT_RQCTL_INTEVENT_MASK);
4054
4055                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4056                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4057
4058                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4059
4060                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4061
4062                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4063                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4064                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4065                          I40E_QINT_TQCTL_INTEVENT_MASK);
4066
4067                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4068                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4069
4070                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4071         }
4072 }
4073
4074 /**
4075  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4076  * @vsi: the VSI being configured
4077  * @v_idx: Index of vector to be freed
4078  *
4079  * This function frees the memory allocated to the q_vector.  In addition if
4080  * NAPI is enabled it will delete any references to the NAPI struct prior
4081  * to freeing the q_vector.
4082  **/
4083 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4084 {
4085         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4086         struct i40e_ring *ring;
4087
4088         if (!q_vector)
4089                 return;
4090
4091         /* disassociate q_vector from rings */
4092         i40e_for_each_ring(ring, q_vector->tx)
4093                 ring->q_vector = NULL;
4094
4095         i40e_for_each_ring(ring, q_vector->rx)
4096                 ring->q_vector = NULL;
4097
4098         /* only VSI w/ an associated netdev is set up w/ NAPI */
4099         if (vsi->netdev)
4100                 netif_napi_del(&q_vector->napi);
4101
4102         vsi->q_vectors[v_idx] = NULL;
4103
4104         kfree_rcu(q_vector, rcu);
4105 }
4106
4107 /**
4108  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4109  * @vsi: the VSI being un-configured
4110  *
4111  * This frees the memory allocated to the q_vectors and
4112  * deletes references to the NAPI struct.
4113  **/
4114 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4115 {
4116         int v_idx;
4117
4118         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4119                 i40e_free_q_vector(vsi, v_idx);
4120 }
4121
4122 /**
4123  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4124  * @pf: board private structure
4125  **/
4126 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4127 {
4128         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4129         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4130                 pci_disable_msix(pf->pdev);
4131                 kfree(pf->msix_entries);
4132                 pf->msix_entries = NULL;
4133                 kfree(pf->irq_pile);
4134                 pf->irq_pile = NULL;
4135         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4136                 pci_disable_msi(pf->pdev);
4137         }
4138         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4139 }
4140
4141 /**
4142  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4143  * @pf: board private structure
4144  *
4145  * We go through and clear interrupt specific resources and reset the structure
4146  * to pre-load conditions
4147  **/
4148 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4149 {
4150         int i;
4151
4152         i40e_stop_misc_vector(pf);
4153         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4154                 synchronize_irq(pf->msix_entries[0].vector);
4155                 free_irq(pf->msix_entries[0].vector, pf);
4156         }
4157
4158         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4159         for (i = 0; i < pf->num_alloc_vsi; i++)
4160                 if (pf->vsi[i])
4161                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4162         i40e_reset_interrupt_capability(pf);
4163 }
4164
4165 /**
4166  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4167  * @vsi: the VSI being configured
4168  **/
4169 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4170 {
4171         int q_idx;
4172
4173         if (!vsi->netdev)
4174                 return;
4175
4176         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4177                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4178 }
4179
4180 /**
4181  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4182  * @vsi: the VSI being configured
4183  **/
4184 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4185 {
4186         int q_idx;
4187
4188         if (!vsi->netdev)
4189                 return;
4190
4191         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4192                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4193 }
4194
4195 /**
4196  * i40e_vsi_close - Shut down a VSI
4197  * @vsi: the vsi to be quelled
4198  **/
4199 static void i40e_vsi_close(struct i40e_vsi *vsi)
4200 {
4201         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4202                 i40e_down(vsi);
4203         i40e_vsi_free_irq(vsi);
4204         i40e_vsi_free_tx_resources(vsi);
4205         i40e_vsi_free_rx_resources(vsi);
4206         vsi->current_netdev_flags = 0;
4207 }
4208
4209 /**
4210  * i40e_quiesce_vsi - Pause a given VSI
4211  * @vsi: the VSI being paused
4212  **/
4213 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4214 {
4215         if (test_bit(__I40E_DOWN, &vsi->state))
4216                 return;
4217
4218         /* No need to disable FCoE VSI when Tx suspended */
4219         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4220             vsi->type == I40E_VSI_FCOE) {
4221                 dev_dbg(&vsi->back->pdev->dev,
4222                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4223                 return;
4224         }
4225
4226         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4227         if (vsi->netdev && netif_running(vsi->netdev))
4228                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4229         else
4230                 i40e_vsi_close(vsi);
4231 }
4232
4233 /**
4234  * i40e_unquiesce_vsi - Resume a given VSI
4235  * @vsi: the VSI being resumed
4236  **/
4237 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4238 {
4239         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4240                 return;
4241
4242         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4243         if (vsi->netdev && netif_running(vsi->netdev))
4244                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4245         else
4246                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4247 }
4248
4249 /**
4250  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4251  * @pf: the PF
4252  **/
4253 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4254 {
4255         int v;
4256
4257         for (v = 0; v < pf->num_alloc_vsi; v++) {
4258                 if (pf->vsi[v])
4259                         i40e_quiesce_vsi(pf->vsi[v]);
4260         }
4261 }
4262
4263 /**
4264  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4265  * @pf: the PF
4266  **/
4267 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4268 {
4269         int v;
4270
4271         for (v = 0; v < pf->num_alloc_vsi; v++) {
4272                 if (pf->vsi[v])
4273                         i40e_unquiesce_vsi(pf->vsi[v]);
4274         }
4275 }
4276
4277 #ifdef CONFIG_I40E_DCB
4278 /**
4279  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4280  * @vsi: the VSI being configured
4281  *
4282  * This function waits for the given VSI's Tx queues to be disabled.
4283  **/
4284 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4285 {
4286         struct i40e_pf *pf = vsi->back;
4287         int i, pf_q, ret;
4288
4289         pf_q = vsi->base_queue;
4290         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4291                 /* Check and wait for the disable status of the queue */
4292                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4293                 if (ret) {
4294                         dev_info(&pf->pdev->dev,
4295                                  "VSI seid %d Tx ring %d disable timeout\n",
4296                                  vsi->seid, pf_q);
4297                         return ret;
4298                 }
4299         }
4300
4301         return 0;
4302 }
4303
4304 /**
4305  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4306  * @pf: the PF
4307  *
4308  * This function waits for the Tx queues to be in disabled state for all the
4309  * VSIs that are managed by this PF.
4310  **/
4311 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4312 {
4313         int v, ret = 0;
4314
4315         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4316                 /* No need to wait for FCoE VSI queues */
4317                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4318                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4319                         if (ret)
4320                                 break;
4321                 }
4322         }
4323
4324         return ret;
4325 }
4326
4327 #endif
4328
4329 /**
4330  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4331  * @q_idx: TX queue number
4332  * @vsi: Pointer to VSI struct
4333  *
4334  * This function checks specified queue for given VSI. Detects hung condition.
4335  * Sets hung bit since it is two step process. Before next run of service task
4336  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4337  * hung condition remain unchanged and during subsequent run, this function
4338  * issues SW interrupt to recover from hung condition.
4339  **/
4340 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4341 {
4342         struct i40e_ring *tx_ring = NULL;
4343         struct i40e_pf  *pf;
4344         u32 head, val, tx_pending;
4345         int i;
4346
4347         pf = vsi->back;
4348
4349         /* now that we have an index, find the tx_ring struct */
4350         for (i = 0; i < vsi->num_queue_pairs; i++) {
4351                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4352                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4353                                 tx_ring = vsi->tx_rings[i];
4354                                 break;
4355                         }
4356                 }
4357         }
4358
4359         if (!tx_ring)
4360                 return;
4361
4362         /* Read interrupt register */
4363         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4364                 val = rd32(&pf->hw,
4365                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4366                                                tx_ring->vsi->base_vector - 1));
4367         else
4368                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4369
4370         /* Bail out if interrupts are disabled because napi_poll
4371          * execution in-progress or will get scheduled soon.
4372          * napi_poll cleans TX and RX queues and updates 'next_to_clean'.
4373          */
4374         if (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))
4375                 return;
4376
4377         head = i40e_get_head(tx_ring);
4378
4379         tx_pending = i40e_get_tx_pending(tx_ring);
4380
4381         /* HW is done executing descriptors, updated HEAD write back,
4382          * but SW hasn't processed those descriptors. If interrupt is
4383          * not generated from this point ON, it could result into
4384          * dev_watchdog detecting timeout on those netdev_queue,
4385          * hence proactively trigger SW interrupt.
4386          */
4387         if (tx_pending) {
4388                 /* NAPI Poll didn't run and clear since it was set */
4389                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4390                                        &tx_ring->q_vector->hung_detected)) {
4391                         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",
4392                                     vsi->seid, q_idx, tx_pending,
4393                                     tx_ring->next_to_clean, head,
4394                                     tx_ring->next_to_use,
4395                                     readl(tx_ring->tail));
4396                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4397                                     vsi->seid, q_idx, val);
4398                         i40e_force_wb(vsi, tx_ring->q_vector);
4399                 } else {
4400                         /* First Chance - detected possible hung */
4401                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4402                                 &tx_ring->q_vector->hung_detected);
4403                 }
4404         }
4405 }
4406
4407 /**
4408  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4409  * @pf:  pointer to PF struct
4410  *
4411  * LAN VSI has netdev and netdev has TX queues. This function is to check
4412  * each of those TX queues if they are hung, trigger recovery by issuing
4413  * SW interrupt.
4414  **/
4415 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4416 {
4417         struct net_device *netdev;
4418         struct i40e_vsi *vsi;
4419         int i;
4420
4421         /* Only for LAN VSI */
4422         vsi = pf->vsi[pf->lan_vsi];
4423
4424         if (!vsi)
4425                 return;
4426
4427         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4428         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4429             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4430                 return;
4431
4432         /* Make sure type is MAIN VSI */
4433         if (vsi->type != I40E_VSI_MAIN)
4434                 return;
4435
4436         netdev = vsi->netdev;
4437         if (!netdev)
4438                 return;
4439
4440         /* Bail out if netif_carrier is not OK */
4441         if (!netif_carrier_ok(netdev))
4442                 return;
4443
4444         /* Go thru' TX queues for netdev */
4445         for (i = 0; i < netdev->num_tx_queues; i++) {
4446                 struct netdev_queue *q;
4447
4448                 q = netdev_get_tx_queue(netdev, i);
4449                 if (q)
4450                         i40e_detect_recover_hung_queue(i, vsi);
4451         }
4452 }
4453
4454 /**
4455  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4456  * @pf: pointer to PF
4457  *
4458  * Get TC map for ISCSI PF type that will include iSCSI TC
4459  * and LAN TC.
4460  **/
4461 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4462 {
4463         struct i40e_dcb_app_priority_table app;
4464         struct i40e_hw *hw = &pf->hw;
4465         u8 enabled_tc = 1; /* TC0 is always enabled */
4466         u8 tc, i;
4467         /* Get the iSCSI APP TLV */
4468         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4469
4470         for (i = 0; i < dcbcfg->numapps; i++) {
4471                 app = dcbcfg->app[i];
4472                 if (app.selector == I40E_APP_SEL_TCPIP &&
4473                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4474                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4475                         enabled_tc |= BIT(tc);
4476                         break;
4477                 }
4478         }
4479
4480         return enabled_tc;
4481 }
4482
4483 /**
4484  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4485  * @dcbcfg: the corresponding DCBx configuration structure
4486  *
4487  * Return the number of TCs from given DCBx configuration
4488  **/
4489 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4490 {
4491         u8 num_tc = 0;
4492         int i;
4493
4494         /* Scan the ETS Config Priority Table to find
4495          * traffic class enabled for a given priority
4496          * and use the traffic class index to get the
4497          * number of traffic classes enabled
4498          */
4499         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4500                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4501                         num_tc = dcbcfg->etscfg.prioritytable[i];
4502         }
4503
4504         /* Traffic class index starts from zero so
4505          * increment to return the actual count
4506          */
4507         return num_tc + 1;
4508 }
4509
4510 /**
4511  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4512  * @dcbcfg: the corresponding DCBx configuration structure
4513  *
4514  * Query the current DCB configuration and return the number of
4515  * traffic classes enabled from the given DCBX config
4516  **/
4517 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4518 {
4519         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4520         u8 enabled_tc = 1;
4521         u8 i;
4522
4523         for (i = 0; i < num_tc; i++)
4524                 enabled_tc |= BIT(i);
4525
4526         return enabled_tc;
4527 }
4528
4529 /**
4530  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4531  * @pf: PF being queried
4532  *
4533  * Return number of traffic classes enabled for the given PF
4534  **/
4535 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4536 {
4537         struct i40e_hw *hw = &pf->hw;
4538         u8 i, enabled_tc;
4539         u8 num_tc = 0;
4540         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4541
4542         /* If DCB is not enabled then always in single TC */
4543         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4544                 return 1;
4545
4546         /* SFP mode will be enabled for all TCs on port */
4547         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4548                 return i40e_dcb_get_num_tc(dcbcfg);
4549
4550         /* MFP mode return count of enabled TCs for this PF */
4551         if (pf->hw.func_caps.iscsi)
4552                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4553         else
4554                 return 1; /* Only TC0 */
4555
4556         /* At least have TC0 */
4557         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4558         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4559                 if (enabled_tc & BIT(i))
4560                         num_tc++;
4561         }
4562         return num_tc;
4563 }
4564
4565 /**
4566  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4567  * @pf: PF being queried
4568  *
4569  * Return a bitmap for first enabled traffic class for this PF.
4570  **/
4571 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4572 {
4573         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4574         u8 i = 0;
4575
4576         if (!enabled_tc)
4577                 return 0x1; /* TC0 */
4578
4579         /* Find the first enabled TC */
4580         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4581                 if (enabled_tc & BIT(i))
4582                         break;
4583         }
4584
4585         return BIT(i);
4586 }
4587
4588 /**
4589  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4590  * @pf: PF being queried
4591  *
4592  * Return a bitmap for enabled traffic classes for this PF.
4593  **/
4594 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4595 {
4596         /* If DCB is not enabled for this PF then just return default TC */
4597         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4598                 return i40e_pf_get_default_tc(pf);
4599
4600         /* SFP mode we want PF to be enabled for all TCs */
4601         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4602                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4603
4604         /* MFP enabled and iSCSI PF type */
4605         if (pf->hw.func_caps.iscsi)
4606                 return i40e_get_iscsi_tc_map(pf);
4607         else
4608                 return i40e_pf_get_default_tc(pf);
4609 }
4610
4611 /**
4612  * i40e_vsi_get_bw_info - Query VSI BW Information
4613  * @vsi: the VSI being queried
4614  *
4615  * Returns 0 on success, negative value on failure
4616  **/
4617 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4618 {
4619         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4620         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4621         struct i40e_pf *pf = vsi->back;
4622         struct i40e_hw *hw = &pf->hw;
4623         i40e_status ret;
4624         u32 tc_bw_max;
4625         int i;
4626
4627         /* Get the VSI level BW configuration */
4628         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4629         if (ret) {
4630                 dev_info(&pf->pdev->dev,
4631                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4632                          i40e_stat_str(&pf->hw, ret),
4633                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4634                 return -EINVAL;
4635         }
4636
4637         /* Get the VSI level BW configuration per TC */
4638         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4639                                                NULL);
4640         if (ret) {
4641                 dev_info(&pf->pdev->dev,
4642                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4643                          i40e_stat_str(&pf->hw, ret),
4644                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4645                 return -EINVAL;
4646         }
4647
4648         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4649                 dev_info(&pf->pdev->dev,
4650                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4651                          bw_config.tc_valid_bits,
4652                          bw_ets_config.tc_valid_bits);
4653                 /* Still continuing */
4654         }
4655
4656         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4657         vsi->bw_max_quanta = bw_config.max_bw;
4658         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4659                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4660         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4661                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4662                 vsi->bw_ets_limit_credits[i] =
4663                                         le16_to_cpu(bw_ets_config.credits[i]);
4664                 /* 3 bits out of 4 for each TC */
4665                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4666         }
4667
4668         return 0;
4669 }
4670
4671 /**
4672  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4673  * @vsi: the VSI being configured
4674  * @enabled_tc: TC bitmap
4675  * @bw_credits: BW shared credits per TC
4676  *
4677  * Returns 0 on success, negative value on failure
4678  **/
4679 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4680                                        u8 *bw_share)
4681 {
4682         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4683         i40e_status ret;
4684         int i;
4685
4686         bw_data.tc_valid_bits = enabled_tc;
4687         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4688                 bw_data.tc_bw_credits[i] = bw_share[i];
4689
4690         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4691                                        NULL);
4692         if (ret) {
4693                 dev_info(&vsi->back->pdev->dev,
4694                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4695                          vsi->back->hw.aq.asq_last_status);
4696                 return -EINVAL;
4697         }
4698
4699         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4700                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4701
4702         return 0;
4703 }
4704
4705 /**
4706  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4707  * @vsi: the VSI being configured
4708  * @enabled_tc: TC map to be enabled
4709  *
4710  **/
4711 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4712 {
4713         struct net_device *netdev = vsi->netdev;
4714         struct i40e_pf *pf = vsi->back;
4715         struct i40e_hw *hw = &pf->hw;
4716         u8 netdev_tc = 0;
4717         int i;
4718         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4719
4720         if (!netdev)
4721                 return;
4722
4723         if (!enabled_tc) {
4724                 netdev_reset_tc(netdev);
4725                 return;
4726         }
4727
4728         /* Set up actual enabled TCs on the VSI */
4729         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4730                 return;
4731
4732         /* set per TC queues for the VSI */
4733         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4734                 /* Only set TC queues for enabled tcs
4735                  *
4736                  * e.g. For a VSI that has TC0 and TC3 enabled the
4737                  * enabled_tc bitmap would be 0x00001001; the driver
4738                  * will set the numtc for netdev as 2 that will be
4739                  * referenced by the netdev layer as TC 0 and 1.
4740                  */
4741                 if (vsi->tc_config.enabled_tc & BIT(i))
4742                         netdev_set_tc_queue(netdev,
4743                                         vsi->tc_config.tc_info[i].netdev_tc,
4744                                         vsi->tc_config.tc_info[i].qcount,
4745                                         vsi->tc_config.tc_info[i].qoffset);
4746         }
4747
4748         /* Assign UP2TC map for the VSI */
4749         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4750                 /* Get the actual TC# for the UP */
4751                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4752                 /* Get the mapped netdev TC# for the UP */
4753                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4754                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4755         }
4756 }
4757
4758 /**
4759  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4760  * @vsi: the VSI being configured
4761  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4762  **/
4763 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4764                                       struct i40e_vsi_context *ctxt)
4765 {
4766         /* copy just the sections touched not the entire info
4767          * since not all sections are valid as returned by
4768          * update vsi params
4769          */
4770         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4771         memcpy(&vsi->info.queue_mapping,
4772                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4773         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4774                sizeof(vsi->info.tc_mapping));
4775 }
4776
4777 /**
4778  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4779  * @vsi: VSI to be configured
4780  * @enabled_tc: TC bitmap
4781  *
4782  * This configures a particular VSI for TCs that are mapped to the
4783  * given TC bitmap. It uses default bandwidth share for TCs across
4784  * VSIs to configure TC for a particular VSI.
4785  *
4786  * NOTE:
4787  * It is expected that the VSI queues have been quisced before calling
4788  * this function.
4789  **/
4790 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4791 {
4792         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4793         struct i40e_vsi_context ctxt;
4794         int ret = 0;
4795         int i;
4796
4797         /* Check if enabled_tc is same as existing or new TCs */
4798         if (vsi->tc_config.enabled_tc == enabled_tc)
4799                 return ret;
4800
4801         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4802         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4803                 if (enabled_tc & BIT(i))
4804                         bw_share[i] = 1;
4805         }
4806
4807         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4808         if (ret) {
4809                 dev_info(&vsi->back->pdev->dev,
4810                          "Failed configuring TC map %d for VSI %d\n",
4811                          enabled_tc, vsi->seid);
4812                 goto out;
4813         }
4814
4815         /* Update Queue Pairs Mapping for currently enabled UPs */
4816         ctxt.seid = vsi->seid;
4817         ctxt.pf_num = vsi->back->hw.pf_id;
4818         ctxt.vf_num = 0;
4819         ctxt.uplink_seid = vsi->uplink_seid;
4820         ctxt.info = vsi->info;
4821         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4822
4823         /* Update the VSI after updating the VSI queue-mapping information */
4824         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4825         if (ret) {
4826                 dev_info(&vsi->back->pdev->dev,
4827                          "Update vsi tc config failed, err %s aq_err %s\n",
4828                          i40e_stat_str(&vsi->back->hw, ret),
4829                          i40e_aq_str(&vsi->back->hw,
4830                                      vsi->back->hw.aq.asq_last_status));
4831                 goto out;
4832         }
4833         /* update the local VSI info with updated queue map */
4834         i40e_vsi_update_queue_map(vsi, &ctxt);
4835         vsi->info.valid_sections = 0;
4836
4837         /* Update current VSI BW information */
4838         ret = i40e_vsi_get_bw_info(vsi);
4839         if (ret) {
4840                 dev_info(&vsi->back->pdev->dev,
4841                          "Failed updating vsi bw info, err %s aq_err %s\n",
4842                          i40e_stat_str(&vsi->back->hw, ret),
4843                          i40e_aq_str(&vsi->back->hw,
4844                                      vsi->back->hw.aq.asq_last_status));
4845                 goto out;
4846         }
4847
4848         /* Update the netdev TC setup */
4849         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4850 out:
4851         return ret;
4852 }
4853
4854 /**
4855  * i40e_veb_config_tc - Configure TCs for given VEB
4856  * @veb: given VEB
4857  * @enabled_tc: TC bitmap
4858  *
4859  * Configures given TC bitmap for VEB (switching) element
4860  **/
4861 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4862 {
4863         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4864         struct i40e_pf *pf = veb->pf;
4865         int ret = 0;
4866         int i;
4867
4868         /* No TCs or already enabled TCs just return */
4869         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4870                 return ret;
4871
4872         bw_data.tc_valid_bits = enabled_tc;
4873         /* bw_data.absolute_credits is not set (relative) */
4874
4875         /* Enable ETS TCs with equal BW Share for now */
4876         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4877                 if (enabled_tc & BIT(i))
4878                         bw_data.tc_bw_share_credits[i] = 1;
4879         }
4880
4881         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4882                                                    &bw_data, NULL);
4883         if (ret) {
4884                 dev_info(&pf->pdev->dev,
4885                          "VEB bw config failed, err %s aq_err %s\n",
4886                          i40e_stat_str(&pf->hw, ret),
4887                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4888                 goto out;
4889         }
4890
4891         /* Update the BW information */
4892         ret = i40e_veb_get_bw_info(veb);
4893         if (ret) {
4894                 dev_info(&pf->pdev->dev,
4895                          "Failed getting veb bw config, err %s aq_err %s\n",
4896                          i40e_stat_str(&pf->hw, ret),
4897                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4898         }
4899
4900 out:
4901         return ret;
4902 }
4903
4904 #ifdef CONFIG_I40E_DCB
4905 /**
4906  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4907  * @pf: PF struct
4908  *
4909  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4910  * the caller would've quiesce all the VSIs before calling
4911  * this function
4912  **/
4913 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4914 {
4915         u8 tc_map = 0;
4916         int ret;
4917         u8 v;
4918
4919         /* Enable the TCs available on PF to all VEBs */
4920         tc_map = i40e_pf_get_tc_map(pf);
4921         for (v = 0; v < I40E_MAX_VEB; v++) {
4922                 if (!pf->veb[v])
4923                         continue;
4924                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4925                 if (ret) {
4926                         dev_info(&pf->pdev->dev,
4927                                  "Failed configuring TC for VEB seid=%d\n",
4928                                  pf->veb[v]->seid);
4929                         /* Will try to configure as many components */
4930                 }
4931         }
4932
4933         /* Update each VSI */
4934         for (v = 0; v < pf->num_alloc_vsi; v++) {
4935                 if (!pf->vsi[v])
4936                         continue;
4937
4938                 /* - Enable all TCs for the LAN VSI
4939 #ifdef I40E_FCOE
4940                  * - For FCoE VSI only enable the TC configured
4941                  *   as per the APP TLV
4942 #endif
4943                  * - For all others keep them at TC0 for now
4944                  */
4945                 if (v == pf->lan_vsi)
4946                         tc_map = i40e_pf_get_tc_map(pf);
4947                 else
4948                         tc_map = i40e_pf_get_default_tc(pf);
4949 #ifdef I40E_FCOE
4950                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4951                         tc_map = i40e_get_fcoe_tc_map(pf);
4952 #endif /* #ifdef I40E_FCOE */
4953
4954                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4955                 if (ret) {
4956                         dev_info(&pf->pdev->dev,
4957                                  "Failed configuring TC for VSI seid=%d\n",
4958                                  pf->vsi[v]->seid);
4959                         /* Will try to configure as many components */
4960                 } else {
4961                         /* Re-configure VSI vectors based on updated TC map */
4962                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4963                         if (pf->vsi[v]->netdev)
4964                                 i40e_dcbnl_set_all(pf->vsi[v]);
4965                 }
4966         }
4967 }
4968
4969 /**
4970  * i40e_resume_port_tx - Resume port Tx
4971  * @pf: PF struct
4972  *
4973  * Resume a port's Tx and issue a PF reset in case of failure to
4974  * resume.
4975  **/
4976 static int i40e_resume_port_tx(struct i40e_pf *pf)
4977 {
4978         struct i40e_hw *hw = &pf->hw;
4979         int ret;
4980
4981         ret = i40e_aq_resume_port_tx(hw, NULL);
4982         if (ret) {
4983                 dev_info(&pf->pdev->dev,
4984                          "Resume Port Tx failed, err %s aq_err %s\n",
4985                           i40e_stat_str(&pf->hw, ret),
4986                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4987                 /* Schedule PF reset to recover */
4988                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4989                 i40e_service_event_schedule(pf);
4990         }
4991
4992         return ret;
4993 }
4994
4995 /**
4996  * i40e_init_pf_dcb - Initialize DCB configuration
4997  * @pf: PF being configured
4998  *
4999  * Query the current DCB configuration and cache it
5000  * in the hardware structure
5001  **/
5002 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5003 {
5004         struct i40e_hw *hw = &pf->hw;
5005         int err = 0;
5006
5007         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5008         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
5009             (pf->hw.aq.fw_maj_ver < 4))
5010                 goto out;
5011
5012         /* Get the initial DCB configuration */
5013         err = i40e_init_dcb(hw);
5014         if (!err) {
5015                 /* Device/Function is not DCBX capable */
5016                 if ((!hw->func_caps.dcb) ||
5017                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5018                         dev_info(&pf->pdev->dev,
5019                                  "DCBX offload is not supported or is disabled for this PF.\n");
5020
5021                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5022                                 goto out;
5023
5024                 } else {
5025                         /* When status is not DISABLED then DCBX in FW */
5026                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5027                                        DCB_CAP_DCBX_VER_IEEE;
5028
5029                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5030                         /* Enable DCB tagging only when more than one TC */
5031                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5032                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5033                         dev_dbg(&pf->pdev->dev,
5034                                 "DCBX offload is supported for this PF.\n");
5035                 }
5036         } else {
5037                 dev_info(&pf->pdev->dev,
5038                          "Query for DCB configuration failed, err %s aq_err %s\n",
5039                          i40e_stat_str(&pf->hw, err),
5040                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5041         }
5042
5043 out:
5044         return err;
5045 }
5046 #endif /* CONFIG_I40E_DCB */
5047 #define SPEED_SIZE 14
5048 #define FC_SIZE 8
5049 /**
5050  * i40e_print_link_message - print link up or down
5051  * @vsi: the VSI for which link needs a message
5052  */
5053 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5054 {
5055         char *speed = "Unknown";
5056         char *fc = "Unknown";
5057
5058         if (vsi->current_isup == isup)
5059                 return;
5060         vsi->current_isup = isup;
5061         if (!isup) {
5062                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5063                 return;
5064         }
5065
5066         /* Warn user if link speed on NPAR enabled partition is not at
5067          * least 10GB
5068          */
5069         if (vsi->back->hw.func_caps.npar_enable &&
5070             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5071              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5072                 netdev_warn(vsi->netdev,
5073                             "The partition detected link speed that is less than 10Gbps\n");
5074
5075         switch (vsi->back->hw.phy.link_info.link_speed) {
5076         case I40E_LINK_SPEED_40GB:
5077                 speed = "40 G";
5078                 break;
5079         case I40E_LINK_SPEED_20GB:
5080                 speed = "20 G";
5081                 break;
5082         case I40E_LINK_SPEED_10GB:
5083                 speed = "10 G";
5084                 break;
5085         case I40E_LINK_SPEED_1GB:
5086                 speed = "1000 M";
5087                 break;
5088         case I40E_LINK_SPEED_100MB:
5089                 speed = "100 M";
5090                 break;
5091         default:
5092                 break;
5093         }
5094
5095         switch (vsi->back->hw.fc.current_mode) {
5096         case I40E_FC_FULL:
5097                 fc = "RX/TX";
5098                 break;
5099         case I40E_FC_TX_PAUSE:
5100                 fc = "TX";
5101                 break;
5102         case I40E_FC_RX_PAUSE:
5103                 fc = "RX";
5104                 break;
5105         default:
5106                 fc = "None";
5107                 break;
5108         }
5109
5110         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5111                     speed, fc);
5112 }
5113
5114 /**
5115  * i40e_up_complete - Finish the last steps of bringing up a connection
5116  * @vsi: the VSI being configured
5117  **/
5118 static int i40e_up_complete(struct i40e_vsi *vsi)
5119 {
5120         struct i40e_pf *pf = vsi->back;
5121         int err;
5122
5123         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5124                 i40e_vsi_configure_msix(vsi);
5125         else
5126                 i40e_configure_msi_and_legacy(vsi);
5127
5128         /* start rings */
5129         err = i40e_vsi_control_rings(vsi, true);
5130         if (err)
5131                 return err;
5132
5133         clear_bit(__I40E_DOWN, &vsi->state);
5134         i40e_napi_enable_all(vsi);
5135         i40e_vsi_enable_irq(vsi);
5136
5137         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5138             (vsi->netdev)) {
5139                 i40e_print_link_message(vsi, true);
5140                 netif_tx_start_all_queues(vsi->netdev);
5141                 netif_carrier_on(vsi->netdev);
5142         } else if (vsi->netdev) {
5143                 i40e_print_link_message(vsi, false);
5144                 /* need to check for qualified module here*/
5145                 if ((pf->hw.phy.link_info.link_info &
5146                         I40E_AQ_MEDIA_AVAILABLE) &&
5147                     (!(pf->hw.phy.link_info.an_info &
5148                         I40E_AQ_QUALIFIED_MODULE)))
5149                         netdev_err(vsi->netdev,
5150                                    "the driver failed to link because an unqualified module was detected.");
5151         }
5152
5153         /* replay FDIR SB filters */
5154         if (vsi->type == I40E_VSI_FDIR) {
5155                 /* reset fd counters */
5156                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5157                 if (pf->fd_tcp_rule > 0) {
5158                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5159                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5160                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5161                         pf->fd_tcp_rule = 0;
5162                 }
5163                 i40e_fdir_filter_restore(vsi);
5164         }
5165         i40e_service_event_schedule(pf);
5166
5167         return 0;
5168 }
5169
5170 /**
5171  * i40e_vsi_reinit_locked - Reset the VSI
5172  * @vsi: the VSI being configured
5173  *
5174  * Rebuild the ring structs after some configuration
5175  * has changed, e.g. MTU size.
5176  **/
5177 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5178 {
5179         struct i40e_pf *pf = vsi->back;
5180
5181         WARN_ON(in_interrupt());
5182         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5183                 usleep_range(1000, 2000);
5184         i40e_down(vsi);
5185
5186         /* Give a VF some time to respond to the reset.  The
5187          * two second wait is based upon the watchdog cycle in
5188          * the VF driver.
5189          */
5190         if (vsi->type == I40E_VSI_SRIOV)
5191                 msleep(2000);
5192         i40e_up(vsi);
5193         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5194 }
5195
5196 /**
5197  * i40e_up - Bring the connection back up after being down
5198  * @vsi: the VSI being configured
5199  **/
5200 int i40e_up(struct i40e_vsi *vsi)
5201 {
5202         int err;
5203
5204         err = i40e_vsi_configure(vsi);
5205         if (!err)
5206                 err = i40e_up_complete(vsi);
5207
5208         return err;
5209 }
5210
5211 /**
5212  * i40e_down - Shutdown the connection processing
5213  * @vsi: the VSI being stopped
5214  **/
5215 void i40e_down(struct i40e_vsi *vsi)
5216 {
5217         int i;
5218
5219         /* It is assumed that the caller of this function
5220          * sets the vsi->state __I40E_DOWN bit.
5221          */
5222         if (vsi->netdev) {
5223                 netif_carrier_off(vsi->netdev);
5224                 netif_tx_disable(vsi->netdev);
5225         }
5226         i40e_vsi_disable_irq(vsi);
5227         i40e_vsi_control_rings(vsi, false);
5228         i40e_napi_disable_all(vsi);
5229
5230         for (i = 0; i < vsi->num_queue_pairs; i++) {
5231                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5232                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5233         }
5234 }
5235
5236 /**
5237  * i40e_setup_tc - configure multiple traffic classes
5238  * @netdev: net device to configure
5239  * @tc: number of traffic classes to enable
5240  **/
5241 #ifdef I40E_FCOE
5242 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5243 #else
5244 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5245 #endif
5246 {
5247         struct i40e_netdev_priv *np = netdev_priv(netdev);
5248         struct i40e_vsi *vsi = np->vsi;
5249         struct i40e_pf *pf = vsi->back;
5250         u8 enabled_tc = 0;
5251         int ret = -EINVAL;
5252         int i;
5253
5254         /* Check if DCB enabled to continue */
5255         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5256                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5257                 goto exit;
5258         }
5259
5260         /* Check if MFP enabled */
5261         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5262                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5263                 goto exit;
5264         }
5265
5266         /* Check whether tc count is within enabled limit */
5267         if (tc > i40e_pf_get_num_tc(pf)) {
5268                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5269                 goto exit;
5270         }
5271
5272         /* Generate TC map for number of tc requested */
5273         for (i = 0; i < tc; i++)
5274                 enabled_tc |= BIT(i);
5275
5276         /* Requesting same TC configuration as already enabled */
5277         if (enabled_tc == vsi->tc_config.enabled_tc)
5278                 return 0;
5279
5280         /* Quiesce VSI queues */
5281         i40e_quiesce_vsi(vsi);
5282
5283         /* Configure VSI for enabled TCs */
5284         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5285         if (ret) {
5286                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5287                             vsi->seid);
5288                 goto exit;
5289         }
5290
5291         /* Unquiesce VSI */
5292         i40e_unquiesce_vsi(vsi);
5293
5294 exit:
5295         return ret;
5296 }
5297
5298 /**
5299  * i40e_open - Called when a network interface is made active
5300  * @netdev: network interface device structure
5301  *
5302  * The open entry point is called when a network interface is made
5303  * active by the system (IFF_UP).  At this point all resources needed
5304  * for transmit and receive operations are allocated, the interrupt
5305  * handler is registered with the OS, the netdev watchdog subtask is
5306  * enabled, and the stack is notified that the interface is ready.
5307  *
5308  * Returns 0 on success, negative value on failure
5309  **/
5310 int i40e_open(struct net_device *netdev)
5311 {
5312         struct i40e_netdev_priv *np = netdev_priv(netdev);
5313         struct i40e_vsi *vsi = np->vsi;
5314         struct i40e_pf *pf = vsi->back;
5315         int err;
5316
5317         /* disallow open during test or if eeprom is broken */
5318         if (test_bit(__I40E_TESTING, &pf->state) ||
5319             test_bit(__I40E_BAD_EEPROM, &pf->state))
5320                 return -EBUSY;
5321
5322         netif_carrier_off(netdev);
5323
5324         err = i40e_vsi_open(vsi);
5325         if (err)
5326                 return err;
5327
5328         /* configure global TSO hardware offload settings */
5329         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5330                                                        TCP_FLAG_FIN) >> 16);
5331         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5332                                                        TCP_FLAG_FIN |
5333                                                        TCP_FLAG_CWR) >> 16);
5334         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5335
5336 #ifdef CONFIG_I40E_VXLAN
5337         vxlan_get_rx_port(netdev);
5338 #endif
5339
5340         return 0;
5341 }
5342
5343 /**
5344  * i40e_vsi_open -
5345  * @vsi: the VSI to open
5346  *
5347  * Finish initialization of the VSI.
5348  *
5349  * Returns 0 on success, negative value on failure
5350  **/
5351 int i40e_vsi_open(struct i40e_vsi *vsi)
5352 {
5353         struct i40e_pf *pf = vsi->back;
5354         char int_name[I40E_INT_NAME_STR_LEN];
5355         int err;
5356
5357         /* allocate descriptors */
5358         err = i40e_vsi_setup_tx_resources(vsi);
5359         if (err)
5360                 goto err_setup_tx;
5361         err = i40e_vsi_setup_rx_resources(vsi);
5362         if (err)
5363                 goto err_setup_rx;
5364
5365         err = i40e_vsi_configure(vsi);
5366         if (err)
5367                 goto err_setup_rx;
5368
5369         if (vsi->netdev) {
5370                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5371                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5372                 err = i40e_vsi_request_irq(vsi, int_name);
5373                 if (err)
5374                         goto err_setup_rx;
5375
5376                 /* Notify the stack of the actual queue counts. */
5377                 err = netif_set_real_num_tx_queues(vsi->netdev,
5378                                                    vsi->num_queue_pairs);
5379                 if (err)
5380                         goto err_set_queues;
5381
5382                 err = netif_set_real_num_rx_queues(vsi->netdev,
5383                                                    vsi->num_queue_pairs);
5384                 if (err)
5385                         goto err_set_queues;
5386
5387         } else if (vsi->type == I40E_VSI_FDIR) {
5388                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5389                          dev_driver_string(&pf->pdev->dev),
5390                          dev_name(&pf->pdev->dev));
5391                 err = i40e_vsi_request_irq(vsi, int_name);
5392
5393         } else {
5394                 err = -EINVAL;
5395                 goto err_setup_rx;
5396         }
5397
5398         err = i40e_up_complete(vsi);
5399         if (err)
5400                 goto err_up_complete;
5401
5402         return 0;
5403
5404 err_up_complete:
5405         i40e_down(vsi);
5406 err_set_queues:
5407         i40e_vsi_free_irq(vsi);
5408 err_setup_rx:
5409         i40e_vsi_free_rx_resources(vsi);
5410 err_setup_tx:
5411         i40e_vsi_free_tx_resources(vsi);
5412         if (vsi == pf->vsi[pf->lan_vsi])
5413                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5414
5415         return err;
5416 }
5417
5418 /**
5419  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5420  * @pf: Pointer to PF
5421  *
5422  * This function destroys the hlist where all the Flow Director
5423  * filters were saved.
5424  **/
5425 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5426 {
5427         struct i40e_fdir_filter *filter;
5428         struct hlist_node *node2;
5429
5430         hlist_for_each_entry_safe(filter, node2,
5431                                   &pf->fdir_filter_list, fdir_node) {
5432                 hlist_del(&filter->fdir_node);
5433                 kfree(filter);
5434         }
5435         pf->fdir_pf_active_filters = 0;
5436 }
5437
5438 /**
5439  * i40e_close - Disables a network interface
5440  * @netdev: network interface device structure
5441  *
5442  * The close entry point is called when an interface is de-activated
5443  * by the OS.  The hardware is still under the driver's control, but
5444  * this netdev interface is disabled.
5445  *
5446  * Returns 0, this is not allowed to fail
5447  **/
5448 #ifdef I40E_FCOE
5449 int i40e_close(struct net_device *netdev)
5450 #else
5451 static int i40e_close(struct net_device *netdev)
5452 #endif
5453 {
5454         struct i40e_netdev_priv *np = netdev_priv(netdev);
5455         struct i40e_vsi *vsi = np->vsi;
5456
5457         i40e_vsi_close(vsi);
5458
5459         return 0;
5460 }
5461
5462 /**
5463  * i40e_do_reset - Start a PF or Core Reset sequence
5464  * @pf: board private structure
5465  * @reset_flags: which reset is requested
5466  *
5467  * The essential difference in resets is that the PF Reset
5468  * doesn't clear the packet buffers, doesn't reset the PE
5469  * firmware, and doesn't bother the other PFs on the chip.
5470  **/
5471 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5472 {
5473         u32 val;
5474
5475         WARN_ON(in_interrupt());
5476
5477         if (i40e_check_asq_alive(&pf->hw))
5478                 i40e_vc_notify_reset(pf);
5479
5480         /* do the biggest reset indicated */
5481         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5482
5483                 /* Request a Global Reset
5484                  *
5485                  * This will start the chip's countdown to the actual full
5486                  * chip reset event, and a warning interrupt to be sent
5487                  * to all PFs, including the requestor.  Our handler
5488                  * for the warning interrupt will deal with the shutdown
5489                  * and recovery of the switch setup.
5490                  */
5491                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5492                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5493                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5494                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5495
5496         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5497
5498                 /* Request a Core Reset
5499                  *
5500                  * Same as Global Reset, except does *not* include the MAC/PHY
5501                  */
5502                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5503                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5504                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5505                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5506                 i40e_flush(&pf->hw);
5507
5508         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5509
5510                 /* Request a PF Reset
5511                  *
5512                  * Resets only the PF-specific registers
5513                  *
5514                  * This goes directly to the tear-down and rebuild of
5515                  * the switch, since we need to do all the recovery as
5516                  * for the Core Reset.
5517                  */
5518                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5519                 i40e_handle_reset_warning(pf);
5520
5521         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5522                 int v;
5523
5524                 /* Find the VSI(s) that requested a re-init */
5525                 dev_info(&pf->pdev->dev,
5526                          "VSI reinit requested\n");
5527                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5528                         struct i40e_vsi *vsi = pf->vsi[v];
5529
5530                         if (vsi != NULL &&
5531                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5532                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5533                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5534                         }
5535                 }
5536         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5537                 int v;
5538
5539                 /* Find the VSI(s) that needs to be brought down */
5540                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5541                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5542                         struct i40e_vsi *vsi = pf->vsi[v];
5543
5544                         if (vsi != NULL &&
5545                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5546                                 set_bit(__I40E_DOWN, &vsi->state);
5547                                 i40e_down(vsi);
5548                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5549                         }
5550                 }
5551         } else {
5552                 dev_info(&pf->pdev->dev,
5553                          "bad reset request 0x%08x\n", reset_flags);
5554         }
5555 }
5556
5557 #ifdef CONFIG_I40E_DCB
5558 /**
5559  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5560  * @pf: board private structure
5561  * @old_cfg: current DCB config
5562  * @new_cfg: new DCB config
5563  **/
5564 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5565                             struct i40e_dcbx_config *old_cfg,
5566                             struct i40e_dcbx_config *new_cfg)
5567 {
5568         bool need_reconfig = false;
5569
5570         /* Check if ETS configuration has changed */
5571         if (memcmp(&new_cfg->etscfg,
5572                    &old_cfg->etscfg,
5573                    sizeof(new_cfg->etscfg))) {
5574                 /* If Priority Table has changed reconfig is needed */
5575                 if (memcmp(&new_cfg->etscfg.prioritytable,
5576                            &old_cfg->etscfg.prioritytable,
5577                            sizeof(new_cfg->etscfg.prioritytable))) {
5578                         need_reconfig = true;
5579                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5580                 }
5581
5582                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5583                            &old_cfg->etscfg.tcbwtable,
5584                            sizeof(new_cfg->etscfg.tcbwtable)))
5585                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5586
5587                 if (memcmp(&new_cfg->etscfg.tsatable,
5588                            &old_cfg->etscfg.tsatable,
5589                            sizeof(new_cfg->etscfg.tsatable)))
5590                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5591         }
5592
5593         /* Check if PFC configuration has changed */
5594         if (memcmp(&new_cfg->pfc,
5595                    &old_cfg->pfc,
5596                    sizeof(new_cfg->pfc))) {
5597                 need_reconfig = true;
5598                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5599         }
5600
5601         /* Check if APP Table has changed */
5602         if (memcmp(&new_cfg->app,
5603                    &old_cfg->app,
5604                    sizeof(new_cfg->app))) {
5605                 need_reconfig = true;
5606                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5607         }
5608
5609         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5610         return need_reconfig;
5611 }
5612
5613 /**
5614  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5615  * @pf: board private structure
5616  * @e: event info posted on ARQ
5617  **/
5618 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5619                                   struct i40e_arq_event_info *e)
5620 {
5621         struct i40e_aqc_lldp_get_mib *mib =
5622                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5623         struct i40e_hw *hw = &pf->hw;
5624         struct i40e_dcbx_config tmp_dcbx_cfg;
5625         bool need_reconfig = false;
5626         int ret = 0;
5627         u8 type;
5628
5629         /* Not DCB capable or capability disabled */
5630         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5631                 return ret;
5632
5633         /* Ignore if event is not for Nearest Bridge */
5634         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5635                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5636         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5637         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5638                 return ret;
5639
5640         /* Check MIB Type and return if event for Remote MIB update */
5641         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5642         dev_dbg(&pf->pdev->dev,
5643                 "LLDP event mib type %s\n", type ? "remote" : "local");
5644         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5645                 /* Update the remote cached instance and return */
5646                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5647                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5648                                 &hw->remote_dcbx_config);
5649                 goto exit;
5650         }
5651
5652         /* Store the old configuration */
5653         tmp_dcbx_cfg = hw->local_dcbx_config;
5654
5655         /* Reset the old DCBx configuration data */
5656         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5657         /* Get updated DCBX data from firmware */
5658         ret = i40e_get_dcb_config(&pf->hw);
5659         if (ret) {
5660                 dev_info(&pf->pdev->dev,
5661                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5662                          i40e_stat_str(&pf->hw, ret),
5663                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5664                 goto exit;
5665         }
5666
5667         /* No change detected in DCBX configs */
5668         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5669                     sizeof(tmp_dcbx_cfg))) {
5670                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5671                 goto exit;
5672         }
5673
5674         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5675                                                &hw->local_dcbx_config);
5676
5677         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5678
5679         if (!need_reconfig)
5680                 goto exit;
5681
5682         /* Enable DCB tagging only when more than one TC */
5683         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5684                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5685         else
5686                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5687
5688         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5689         /* Reconfiguration needed quiesce all VSIs */
5690         i40e_pf_quiesce_all_vsi(pf);
5691
5692         /* Changes in configuration update VEB/VSI */
5693         i40e_dcb_reconfigure(pf);
5694
5695         ret = i40e_resume_port_tx(pf);
5696
5697         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5698         /* In case of error no point in resuming VSIs */
5699         if (ret)
5700                 goto exit;
5701
5702         /* Wait for the PF's Tx queues to be disabled */
5703         ret = i40e_pf_wait_txq_disabled(pf);
5704         if (ret) {
5705                 /* Schedule PF reset to recover */
5706                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5707                 i40e_service_event_schedule(pf);
5708         } else {
5709                 i40e_pf_unquiesce_all_vsi(pf);
5710         }
5711
5712 exit:
5713         return ret;
5714 }
5715 #endif /* CONFIG_I40E_DCB */
5716
5717 /**
5718  * i40e_do_reset_safe - Protected reset path for userland calls.
5719  * @pf: board private structure
5720  * @reset_flags: which reset is requested
5721  *
5722  **/
5723 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5724 {
5725         rtnl_lock();
5726         i40e_do_reset(pf, reset_flags);
5727         rtnl_unlock();
5728 }
5729
5730 /**
5731  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5732  * @pf: board private structure
5733  * @e: event info posted on ARQ
5734  *
5735  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5736  * and VF queues
5737  **/
5738 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5739                                            struct i40e_arq_event_info *e)
5740 {
5741         struct i40e_aqc_lan_overflow *data =
5742                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5743         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5744         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5745         struct i40e_hw *hw = &pf->hw;
5746         struct i40e_vf *vf;
5747         u16 vf_id;
5748
5749         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5750                 queue, qtx_ctl);
5751
5752         /* Queue belongs to VF, find the VF and issue VF reset */
5753         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5754             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5755                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5756                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5757                 vf_id -= hw->func_caps.vf_base_id;
5758                 vf = &pf->vf[vf_id];
5759                 i40e_vc_notify_vf_reset(vf);
5760                 /* Allow VF to process pending reset notification */
5761                 msleep(20);
5762                 i40e_reset_vf(vf, false);
5763         }
5764 }
5765
5766 /**
5767  * i40e_service_event_complete - Finish up the service event
5768  * @pf: board private structure
5769  **/
5770 static void i40e_service_event_complete(struct i40e_pf *pf)
5771 {
5772         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5773
5774         /* flush memory to make sure state is correct before next watchog */
5775         smp_mb__before_atomic();
5776         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5777 }
5778
5779 /**
5780  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5781  * @pf: board private structure
5782  **/
5783 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5784 {
5785         u32 val, fcnt_prog;
5786
5787         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5788         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5789         return fcnt_prog;
5790 }
5791
5792 /**
5793  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5794  * @pf: board private structure
5795  **/
5796 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5797 {
5798         u32 val, fcnt_prog;
5799
5800         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5801         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5802                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5803                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5804         return fcnt_prog;
5805 }
5806
5807 /**
5808  * i40e_get_global_fd_count - Get total FD filters programmed on device
5809  * @pf: board private structure
5810  **/
5811 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5812 {
5813         u32 val, fcnt_prog;
5814
5815         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5816         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5817                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5818                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5819         return fcnt_prog;
5820 }
5821
5822 /**
5823  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5824  * @pf: board private structure
5825  **/
5826 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5827 {
5828         struct i40e_fdir_filter *filter;
5829         u32 fcnt_prog, fcnt_avail;
5830         struct hlist_node *node;
5831
5832         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5833                 return;
5834
5835         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5836          * to re-enable
5837          */
5838         fcnt_prog = i40e_get_global_fd_count(pf);
5839         fcnt_avail = pf->fdir_pf_filter_count;
5840         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5841             (pf->fd_add_err == 0) ||
5842             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5843                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5844                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5845                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5846                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5847                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5848                 }
5849         }
5850         /* Wait for some more space to be available to turn on ATR */
5851         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5852                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5853                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5854                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5855                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5856                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5857                 }
5858         }
5859
5860         /* if hw had a problem adding a filter, delete it */
5861         if (pf->fd_inv > 0) {
5862                 hlist_for_each_entry_safe(filter, node,
5863                                           &pf->fdir_filter_list, fdir_node) {
5864                         if (filter->fd_id == pf->fd_inv) {
5865                                 hlist_del(&filter->fdir_node);
5866                                 kfree(filter);
5867                                 pf->fdir_pf_active_filters--;
5868                         }
5869                 }
5870         }
5871 }
5872
5873 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5874 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5875 /**
5876  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5877  * @pf: board private structure
5878  **/
5879 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5880 {
5881         unsigned long min_flush_time;
5882         int flush_wait_retry = 50;
5883         bool disable_atr = false;
5884         int fd_room;
5885         int reg;
5886
5887         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5888                 return;
5889
5890         if (!time_after(jiffies, pf->fd_flush_timestamp +
5891                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5892                 return;
5893
5894         /* If the flush is happening too quick and we have mostly SB rules we
5895          * should not re-enable ATR for some time.
5896          */
5897         min_flush_time = pf->fd_flush_timestamp +
5898                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5899         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5900
5901         if (!(time_after(jiffies, min_flush_time)) &&
5902             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5903                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5904                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5905                 disable_atr = true;
5906         }
5907
5908         pf->fd_flush_timestamp = jiffies;
5909         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5910         /* flush all filters */
5911         wr32(&pf->hw, I40E_PFQF_CTL_1,
5912              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5913         i40e_flush(&pf->hw);
5914         pf->fd_flush_cnt++;
5915         pf->fd_add_err = 0;
5916         do {
5917                 /* Check FD flush status every 5-6msec */
5918                 usleep_range(5000, 6000);
5919                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5920                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5921                         break;
5922         } while (flush_wait_retry--);
5923         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5924                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5925         } else {
5926                 /* replay sideband filters */
5927                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5928                 if (!disable_atr)
5929                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5930                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5931                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5932                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5933         }
5934
5935 }
5936
5937 /**
5938  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5939  * @pf: board private structure
5940  **/
5941 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5942 {
5943         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5944 }
5945
5946 /* We can see up to 256 filter programming desc in transit if the filters are
5947  * being applied really fast; before we see the first
5948  * filter miss error on Rx queue 0. Accumulating enough error messages before
5949  * reacting will make sure we don't cause flush too often.
5950  */
5951 #define I40E_MAX_FD_PROGRAM_ERROR 256
5952
5953 /**
5954  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5955  * @pf: board private structure
5956  **/
5957 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5958 {
5959
5960         /* if interface is down do nothing */
5961         if (test_bit(__I40E_DOWN, &pf->state))
5962                 return;
5963
5964         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5965                 return;
5966
5967         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5968                 i40e_fdir_flush_and_replay(pf);
5969
5970         i40e_fdir_check_and_reenable(pf);
5971
5972 }
5973
5974 /**
5975  * i40e_vsi_link_event - notify VSI of a link event
5976  * @vsi: vsi to be notified
5977  * @link_up: link up or down
5978  **/
5979 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5980 {
5981         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5982                 return;
5983
5984         switch (vsi->type) {
5985         case I40E_VSI_MAIN:
5986 #ifdef I40E_FCOE
5987         case I40E_VSI_FCOE:
5988 #endif
5989                 if (!vsi->netdev || !vsi->netdev_registered)
5990                         break;
5991
5992                 if (link_up) {
5993                         netif_carrier_on(vsi->netdev);
5994                         netif_tx_wake_all_queues(vsi->netdev);
5995                 } else {
5996                         netif_carrier_off(vsi->netdev);
5997                         netif_tx_stop_all_queues(vsi->netdev);
5998                 }
5999                 break;
6000
6001         case I40E_VSI_SRIOV:
6002         case I40E_VSI_VMDQ2:
6003         case I40E_VSI_CTRL:
6004         case I40E_VSI_MIRROR:
6005         default:
6006                 /* there is no notification for other VSIs */
6007                 break;
6008         }
6009 }
6010
6011 /**
6012  * i40e_veb_link_event - notify elements on the veb of a link event
6013  * @veb: veb to be notified
6014  * @link_up: link up or down
6015  **/
6016 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6017 {
6018         struct i40e_pf *pf;
6019         int i;
6020
6021         if (!veb || !veb->pf)
6022                 return;
6023         pf = veb->pf;
6024
6025         /* depth first... */
6026         for (i = 0; i < I40E_MAX_VEB; i++)
6027                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6028                         i40e_veb_link_event(pf->veb[i], link_up);
6029
6030         /* ... now the local VSIs */
6031         for (i = 0; i < pf->num_alloc_vsi; i++)
6032                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6033                         i40e_vsi_link_event(pf->vsi[i], link_up);
6034 }
6035
6036 /**
6037  * i40e_link_event - Update netif_carrier status
6038  * @pf: board private structure
6039  **/
6040 static void i40e_link_event(struct i40e_pf *pf)
6041 {
6042         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6043         u8 new_link_speed, old_link_speed;
6044         i40e_status status;
6045         bool new_link, old_link;
6046
6047         /* save off old link status information */
6048         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6049
6050         /* set this to force the get_link_status call to refresh state */
6051         pf->hw.phy.get_link_info = true;
6052
6053         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6054
6055         status = i40e_get_link_status(&pf->hw, &new_link);
6056         if (status) {
6057                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6058                         status);
6059                 return;
6060         }
6061
6062         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6063         new_link_speed = pf->hw.phy.link_info.link_speed;
6064
6065         if (new_link == old_link &&
6066             new_link_speed == old_link_speed &&
6067             (test_bit(__I40E_DOWN, &vsi->state) ||
6068              new_link == netif_carrier_ok(vsi->netdev)))
6069                 return;
6070
6071         if (!test_bit(__I40E_DOWN, &vsi->state))
6072                 i40e_print_link_message(vsi, new_link);
6073
6074         /* Notify the base of the switch tree connected to
6075          * the link.  Floating VEBs are not notified.
6076          */
6077         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6078                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6079         else
6080                 i40e_vsi_link_event(vsi, new_link);
6081
6082         if (pf->vf)
6083                 i40e_vc_notify_link_state(pf);
6084
6085         if (pf->flags & I40E_FLAG_PTP)
6086                 i40e_ptp_set_increment(pf);
6087 }
6088
6089 /**
6090  * i40e_watchdog_subtask - periodic checks not using event driven response
6091  * @pf: board private structure
6092  **/
6093 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6094 {
6095         int i;
6096
6097         /* if interface is down do nothing */
6098         if (test_bit(__I40E_DOWN, &pf->state) ||
6099             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6100                 return;
6101
6102         /* make sure we don't do these things too often */
6103         if (time_before(jiffies, (pf->service_timer_previous +
6104                                   pf->service_timer_period)))
6105                 return;
6106         pf->service_timer_previous = jiffies;
6107
6108         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6109                 i40e_link_event(pf);
6110
6111         /* Update the stats for active netdevs so the network stack
6112          * can look at updated numbers whenever it cares to
6113          */
6114         for (i = 0; i < pf->num_alloc_vsi; i++)
6115                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6116                         i40e_update_stats(pf->vsi[i]);
6117
6118         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6119                 /* Update the stats for the active switching components */
6120                 for (i = 0; i < I40E_MAX_VEB; i++)
6121                         if (pf->veb[i])
6122                                 i40e_update_veb_stats(pf->veb[i]);
6123         }
6124
6125         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6126 }
6127
6128 /**
6129  * i40e_reset_subtask - Set up for resetting the device and driver
6130  * @pf: board private structure
6131  **/
6132 static void i40e_reset_subtask(struct i40e_pf *pf)
6133 {
6134         u32 reset_flags = 0;
6135
6136         rtnl_lock();
6137         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6138                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6139                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6140         }
6141         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6142                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6143                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6144         }
6145         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6146                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6147                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6148         }
6149         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6150                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6151                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6152         }
6153         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6154                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6155                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6156         }
6157
6158         /* If there's a recovery already waiting, it takes
6159          * precedence before starting a new reset sequence.
6160          */
6161         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6162                 i40e_handle_reset_warning(pf);
6163                 goto unlock;
6164         }
6165
6166         /* If we're already down or resetting, just bail */
6167         if (reset_flags &&
6168             !test_bit(__I40E_DOWN, &pf->state) &&
6169             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6170                 i40e_do_reset(pf, reset_flags);
6171
6172 unlock:
6173         rtnl_unlock();
6174 }
6175
6176 /**
6177  * i40e_handle_link_event - Handle link event
6178  * @pf: board private structure
6179  * @e: event info posted on ARQ
6180  **/
6181 static void i40e_handle_link_event(struct i40e_pf *pf,
6182                                    struct i40e_arq_event_info *e)
6183 {
6184         struct i40e_aqc_get_link_status *status =
6185                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6186
6187         /* Do a new status request to re-enable LSE reporting
6188          * and load new status information into the hw struct
6189          * This completely ignores any state information
6190          * in the ARQ event info, instead choosing to always
6191          * issue the AQ update link status command.
6192          */
6193         i40e_link_event(pf);
6194
6195         /* check for unqualified module, if link is down */
6196         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6197             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6198             (!(status->link_info & I40E_AQ_LINK_UP)))
6199                 dev_err(&pf->pdev->dev,
6200                         "The driver failed to link because an unqualified module was detected.\n");
6201 }
6202
6203 /**
6204  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6205  * @pf: board private structure
6206  **/
6207 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6208 {
6209         struct i40e_arq_event_info event;
6210         struct i40e_hw *hw = &pf->hw;
6211         u16 pending, i = 0;
6212         i40e_status ret;
6213         u16 opcode;
6214         u32 oldval;
6215         u32 val;
6216
6217         /* Do not run clean AQ when PF reset fails */
6218         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6219                 return;
6220
6221         /* check for error indications */
6222         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6223         oldval = val;
6224         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6225                 if (hw->debug_mask & I40E_DEBUG_AQ)
6226                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6227                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6228         }
6229         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6230                 if (hw->debug_mask & I40E_DEBUG_AQ)
6231                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6232                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6233         }
6234         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6235                 if (hw->debug_mask & I40E_DEBUG_AQ)
6236                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6237                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6238         }
6239         if (oldval != val)
6240                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6241
6242         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6243         oldval = val;
6244         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6245                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6246                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6247                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6248         }
6249         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6250                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6251                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6252                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6253         }
6254         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6255                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6256                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6257                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6258         }
6259         if (oldval != val)
6260                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6261
6262         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6263         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6264         if (!event.msg_buf)
6265                 return;
6266
6267         do {
6268                 ret = i40e_clean_arq_element(hw, &event, &pending);
6269                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6270                         break;
6271                 else if (ret) {
6272                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6273                         break;
6274                 }
6275
6276                 opcode = le16_to_cpu(event.desc.opcode);
6277                 switch (opcode) {
6278
6279                 case i40e_aqc_opc_get_link_status:
6280                         i40e_handle_link_event(pf, &event);
6281                         break;
6282                 case i40e_aqc_opc_send_msg_to_pf:
6283                         ret = i40e_vc_process_vf_msg(pf,
6284                                         le16_to_cpu(event.desc.retval),
6285                                         le32_to_cpu(event.desc.cookie_high),
6286                                         le32_to_cpu(event.desc.cookie_low),
6287                                         event.msg_buf,
6288                                         event.msg_len);
6289                         break;
6290                 case i40e_aqc_opc_lldp_update_mib:
6291                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6292 #ifdef CONFIG_I40E_DCB
6293                         rtnl_lock();
6294                         ret = i40e_handle_lldp_event(pf, &event);
6295                         rtnl_unlock();
6296 #endif /* CONFIG_I40E_DCB */
6297                         break;
6298                 case i40e_aqc_opc_event_lan_overflow:
6299                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6300                         i40e_handle_lan_overflow_event(pf, &event);
6301                         break;
6302                 case i40e_aqc_opc_send_msg_to_peer:
6303                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6304                         break;
6305                 case i40e_aqc_opc_nvm_erase:
6306                 case i40e_aqc_opc_nvm_update:
6307                 case i40e_aqc_opc_oem_post_update:
6308                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6309                         break;
6310                 default:
6311                         dev_info(&pf->pdev->dev,
6312                                  "ARQ Error: Unknown event 0x%04x received\n",
6313                                  opcode);
6314                         break;
6315                 }
6316         } while (pending && (i++ < pf->adminq_work_limit));
6317
6318         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6319         /* re-enable Admin queue interrupt cause */
6320         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6321         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6322         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6323         i40e_flush(hw);
6324
6325         kfree(event.msg_buf);
6326 }
6327
6328 /**
6329  * i40e_verify_eeprom - make sure eeprom is good to use
6330  * @pf: board private structure
6331  **/
6332 static void i40e_verify_eeprom(struct i40e_pf *pf)
6333 {
6334         int err;
6335
6336         err = i40e_diag_eeprom_test(&pf->hw);
6337         if (err) {
6338                 /* retry in case of garbage read */
6339                 err = i40e_diag_eeprom_test(&pf->hw);
6340                 if (err) {
6341                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6342                                  err);
6343                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6344                 }
6345         }
6346
6347         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6348                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6349                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6350         }
6351 }
6352
6353 /**
6354  * i40e_enable_pf_switch_lb
6355  * @pf: pointer to the PF structure
6356  *
6357  * enable switch loop back or die - no point in a return value
6358  **/
6359 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6360 {
6361         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6362         struct i40e_vsi_context ctxt;
6363         int ret;
6364
6365         ctxt.seid = pf->main_vsi_seid;
6366         ctxt.pf_num = pf->hw.pf_id;
6367         ctxt.vf_num = 0;
6368         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6369         if (ret) {
6370                 dev_info(&pf->pdev->dev,
6371                          "couldn't get PF vsi config, err %s aq_err %s\n",
6372                          i40e_stat_str(&pf->hw, ret),
6373                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6374                 return;
6375         }
6376         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6377         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6378         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6379
6380         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6381         if (ret) {
6382                 dev_info(&pf->pdev->dev,
6383                          "update vsi switch failed, err %s aq_err %s\n",
6384                          i40e_stat_str(&pf->hw, ret),
6385                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6386         }
6387 }
6388
6389 /**
6390  * i40e_disable_pf_switch_lb
6391  * @pf: pointer to the PF structure
6392  *
6393  * disable switch loop back or die - no point in a return value
6394  **/
6395 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6396 {
6397         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6398         struct i40e_vsi_context ctxt;
6399         int ret;
6400
6401         ctxt.seid = pf->main_vsi_seid;
6402         ctxt.pf_num = pf->hw.pf_id;
6403         ctxt.vf_num = 0;
6404         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6405         if (ret) {
6406                 dev_info(&pf->pdev->dev,
6407                          "couldn't get PF vsi config, err %s aq_err %s\n",
6408                          i40e_stat_str(&pf->hw, ret),
6409                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6410                 return;
6411         }
6412         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6413         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6414         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6415
6416         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6417         if (ret) {
6418                 dev_info(&pf->pdev->dev,
6419                          "update vsi switch failed, err %s aq_err %s\n",
6420                          i40e_stat_str(&pf->hw, ret),
6421                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6422         }
6423 }
6424
6425 /**
6426  * i40e_config_bridge_mode - Configure the HW bridge mode
6427  * @veb: pointer to the bridge instance
6428  *
6429  * Configure the loop back mode for the LAN VSI that is downlink to the
6430  * specified HW bridge instance. It is expected this function is called
6431  * when a new HW bridge is instantiated.
6432  **/
6433 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6434 {
6435         struct i40e_pf *pf = veb->pf;
6436
6437         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6438                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6439                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6440         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6441                 i40e_disable_pf_switch_lb(pf);
6442         else
6443                 i40e_enable_pf_switch_lb(pf);
6444 }
6445
6446 /**
6447  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6448  * @veb: pointer to the VEB instance
6449  *
6450  * This is a recursive function that first builds the attached VSIs then
6451  * recurses in to build the next layer of VEB.  We track the connections
6452  * through our own index numbers because the seid's from the HW could
6453  * change across the reset.
6454  **/
6455 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6456 {
6457         struct i40e_vsi *ctl_vsi = NULL;
6458         struct i40e_pf *pf = veb->pf;
6459         int v, veb_idx;
6460         int ret;
6461
6462         /* build VSI that owns this VEB, temporarily attached to base VEB */
6463         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6464                 if (pf->vsi[v] &&
6465                     pf->vsi[v]->veb_idx == veb->idx &&
6466                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6467                         ctl_vsi = pf->vsi[v];
6468                         break;
6469                 }
6470         }
6471         if (!ctl_vsi) {
6472                 dev_info(&pf->pdev->dev,
6473                          "missing owner VSI for veb_idx %d\n", veb->idx);
6474                 ret = -ENOENT;
6475                 goto end_reconstitute;
6476         }
6477         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6478                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6479         ret = i40e_add_vsi(ctl_vsi);
6480         if (ret) {
6481                 dev_info(&pf->pdev->dev,
6482                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6483                          veb->idx, ret);
6484                 goto end_reconstitute;
6485         }
6486         i40e_vsi_reset_stats(ctl_vsi);
6487
6488         /* create the VEB in the switch and move the VSI onto the VEB */
6489         ret = i40e_add_veb(veb, ctl_vsi);
6490         if (ret)
6491                 goto end_reconstitute;
6492
6493         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6494                 veb->bridge_mode = BRIDGE_MODE_VEB;
6495         else
6496                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6497         i40e_config_bridge_mode(veb);
6498
6499         /* create the remaining VSIs attached to this VEB */
6500         for (v = 0; v < pf->num_alloc_vsi; v++) {
6501                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6502                         continue;
6503
6504                 if (pf->vsi[v]->veb_idx == veb->idx) {
6505                         struct i40e_vsi *vsi = pf->vsi[v];
6506
6507                         vsi->uplink_seid = veb->seid;
6508                         ret = i40e_add_vsi(vsi);
6509                         if (ret) {
6510                                 dev_info(&pf->pdev->dev,
6511                                          "rebuild of vsi_idx %d failed: %d\n",
6512                                          v, ret);
6513                                 goto end_reconstitute;
6514                         }
6515                         i40e_vsi_reset_stats(vsi);
6516                 }
6517         }
6518
6519         /* create any VEBs attached to this VEB - RECURSION */
6520         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6521                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6522                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6523                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6524                         if (ret)
6525                                 break;
6526                 }
6527         }
6528
6529 end_reconstitute:
6530         return ret;
6531 }
6532
6533 /**
6534  * i40e_get_capabilities - get info about the HW
6535  * @pf: the PF struct
6536  **/
6537 static int i40e_get_capabilities(struct i40e_pf *pf)
6538 {
6539         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6540         u16 data_size;
6541         int buf_len;
6542         int err;
6543
6544         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6545         do {
6546                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6547                 if (!cap_buf)
6548                         return -ENOMEM;
6549
6550                 /* this loads the data into the hw struct for us */
6551                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6552                                             &data_size,
6553                                             i40e_aqc_opc_list_func_capabilities,
6554                                             NULL);
6555                 /* data loaded, buffer no longer needed */
6556                 kfree(cap_buf);
6557
6558                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6559                         /* retry with a larger buffer */
6560                         buf_len = data_size;
6561                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6562                         dev_info(&pf->pdev->dev,
6563                                  "capability discovery failed, err %s aq_err %s\n",
6564                                  i40e_stat_str(&pf->hw, err),
6565                                  i40e_aq_str(&pf->hw,
6566                                              pf->hw.aq.asq_last_status));
6567                         return -ENODEV;
6568                 }
6569         } while (err);
6570
6571         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6572                 dev_info(&pf->pdev->dev,
6573                          "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",
6574                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6575                          pf->hw.func_caps.num_msix_vectors,
6576                          pf->hw.func_caps.num_msix_vectors_vf,
6577                          pf->hw.func_caps.fd_filters_guaranteed,
6578                          pf->hw.func_caps.fd_filters_best_effort,
6579                          pf->hw.func_caps.num_tx_qp,
6580                          pf->hw.func_caps.num_vsis);
6581
6582 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6583                        + pf->hw.func_caps.num_vfs)
6584         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6585                 dev_info(&pf->pdev->dev,
6586                          "got num_vsis %d, setting num_vsis to %d\n",
6587                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6588                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6589         }
6590
6591         return 0;
6592 }
6593
6594 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6595
6596 /**
6597  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6598  * @pf: board private structure
6599  **/
6600 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6601 {
6602         struct i40e_vsi *vsi;
6603         int i;
6604
6605         /* quick workaround for an NVM issue that leaves a critical register
6606          * uninitialized
6607          */
6608         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6609                 static const u32 hkey[] = {
6610                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6611                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6612                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6613                         0x95b3a76d};
6614
6615                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6616                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6617         }
6618
6619         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6620                 return;
6621
6622         /* find existing VSI and see if it needs configuring */
6623         vsi = NULL;
6624         for (i = 0; i < pf->num_alloc_vsi; i++) {
6625                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6626                         vsi = pf->vsi[i];
6627                         break;
6628                 }
6629         }
6630
6631         /* create a new VSI if none exists */
6632         if (!vsi) {
6633                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6634                                      pf->vsi[pf->lan_vsi]->seid, 0);
6635                 if (!vsi) {
6636                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6637                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6638                         return;
6639                 }
6640         }
6641
6642         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6643 }
6644
6645 /**
6646  * i40e_fdir_teardown - release the Flow Director resources
6647  * @pf: board private structure
6648  **/
6649 static void i40e_fdir_teardown(struct i40e_pf *pf)
6650 {
6651         int i;
6652
6653         i40e_fdir_filter_exit(pf);
6654         for (i = 0; i < pf->num_alloc_vsi; i++) {
6655                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6656                         i40e_vsi_release(pf->vsi[i]);
6657                         break;
6658                 }
6659         }
6660 }
6661
6662 /**
6663  * i40e_prep_for_reset - prep for the core to reset
6664  * @pf: board private structure
6665  *
6666  * Close up the VFs and other things in prep for PF Reset.
6667   **/
6668 static void i40e_prep_for_reset(struct i40e_pf *pf)
6669 {
6670         struct i40e_hw *hw = &pf->hw;
6671         i40e_status ret = 0;
6672         u32 v;
6673
6674         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6675         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6676                 return;
6677
6678         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6679
6680         /* quiesce the VSIs and their queues that are not already DOWN */
6681         i40e_pf_quiesce_all_vsi(pf);
6682
6683         for (v = 0; v < pf->num_alloc_vsi; v++) {
6684                 if (pf->vsi[v])
6685                         pf->vsi[v]->seid = 0;
6686         }
6687
6688         i40e_shutdown_adminq(&pf->hw);
6689
6690         /* call shutdown HMC */
6691         if (hw->hmc.hmc_obj) {
6692                 ret = i40e_shutdown_lan_hmc(hw);
6693                 if (ret)
6694                         dev_warn(&pf->pdev->dev,
6695                                  "shutdown_lan_hmc failed: %d\n", ret);
6696         }
6697 }
6698
6699 /**
6700  * i40e_send_version - update firmware with driver version
6701  * @pf: PF struct
6702  */
6703 static void i40e_send_version(struct i40e_pf *pf)
6704 {
6705         struct i40e_driver_version dv;
6706
6707         dv.major_version = DRV_VERSION_MAJOR;
6708         dv.minor_version = DRV_VERSION_MINOR;
6709         dv.build_version = DRV_VERSION_BUILD;
6710         dv.subbuild_version = 0;
6711         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6712         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6713 }
6714
6715 /**
6716  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6717  * @pf: board private structure
6718  * @reinit: if the Main VSI needs to re-initialized.
6719  **/
6720 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6721 {
6722         struct i40e_hw *hw = &pf->hw;
6723         u8 set_fc_aq_fail = 0;
6724         i40e_status ret;
6725         u32 val;
6726         u32 v;
6727
6728         /* Now we wait for GRST to settle out.
6729          * We don't have to delete the VEBs or VSIs from the hw switch
6730          * because the reset will make them disappear.
6731          */
6732         ret = i40e_pf_reset(hw);
6733         if (ret) {
6734                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6735                 set_bit(__I40E_RESET_FAILED, &pf->state);
6736                 goto clear_recovery;
6737         }
6738         pf->pfr_count++;
6739
6740         if (test_bit(__I40E_DOWN, &pf->state))
6741                 goto clear_recovery;
6742         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6743
6744         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6745         ret = i40e_init_adminq(&pf->hw);
6746         if (ret) {
6747                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6748                          i40e_stat_str(&pf->hw, ret),
6749                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6750                 goto clear_recovery;
6751         }
6752
6753         /* re-verify the eeprom if we just had an EMP reset */
6754         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6755                 i40e_verify_eeprom(pf);
6756
6757         i40e_clear_pxe_mode(hw);
6758         ret = i40e_get_capabilities(pf);
6759         if (ret)
6760                 goto end_core_reset;
6761
6762         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6763                                 hw->func_caps.num_rx_qp,
6764                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6765         if (ret) {
6766                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6767                 goto end_core_reset;
6768         }
6769         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6770         if (ret) {
6771                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6772                 goto end_core_reset;
6773         }
6774
6775 #ifdef CONFIG_I40E_DCB
6776         ret = i40e_init_pf_dcb(pf);
6777         if (ret) {
6778                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6779                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6780                 /* Continue without DCB enabled */
6781         }
6782 #endif /* CONFIG_I40E_DCB */
6783 #ifdef I40E_FCOE
6784         i40e_init_pf_fcoe(pf);
6785
6786 #endif
6787         /* do basic switch setup */
6788         ret = i40e_setup_pf_switch(pf, reinit);
6789         if (ret)
6790                 goto end_core_reset;
6791
6792         /* driver is only interested in link up/down and module qualification
6793          * reports from firmware
6794          */
6795         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6796                                        I40E_AQ_EVENT_LINK_UPDOWN |
6797                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6798         if (ret)
6799                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6800                          i40e_stat_str(&pf->hw, ret),
6801                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6802
6803         /* make sure our flow control settings are restored */
6804         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6805         if (ret)
6806                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6807                         i40e_stat_str(&pf->hw, ret),
6808                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6809
6810         /* Rebuild the VSIs and VEBs that existed before reset.
6811          * They are still in our local switch element arrays, so only
6812          * need to rebuild the switch model in the HW.
6813          *
6814          * If there were VEBs but the reconstitution failed, we'll try
6815          * try to recover minimal use by getting the basic PF VSI working.
6816          */
6817         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6818                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6819                 /* find the one VEB connected to the MAC, and find orphans */
6820                 for (v = 0; v < I40E_MAX_VEB; v++) {
6821                         if (!pf->veb[v])
6822                                 continue;
6823
6824                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6825                             pf->veb[v]->uplink_seid == 0) {
6826                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6827
6828                                 if (!ret)
6829                                         continue;
6830
6831                                 /* If Main VEB failed, we're in deep doodoo,
6832                                  * so give up rebuilding the switch and set up
6833                                  * for minimal rebuild of PF VSI.
6834                                  * If orphan failed, we'll report the error
6835                                  * but try to keep going.
6836                                  */
6837                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6838                                         dev_info(&pf->pdev->dev,
6839                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6840                                                  ret);
6841                                         pf->vsi[pf->lan_vsi]->uplink_seid
6842                                                                 = pf->mac_seid;
6843                                         break;
6844                                 } else if (pf->veb[v]->uplink_seid == 0) {
6845                                         dev_info(&pf->pdev->dev,
6846                                                  "rebuild of orphan VEB failed: %d\n",
6847                                                  ret);
6848                                 }
6849                         }
6850                 }
6851         }
6852
6853         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6854                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6855                 /* no VEB, so rebuild only the Main VSI */
6856                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6857                 if (ret) {
6858                         dev_info(&pf->pdev->dev,
6859                                  "rebuild of Main VSI failed: %d\n", ret);
6860                         goto end_core_reset;
6861                 }
6862         }
6863
6864         /* Reconfigure hardware for allowing smaller MSS in the case
6865          * of TSO, so that we avoid the MDD being fired and causing
6866          * a reset in the case of small MSS+TSO.
6867          */
6868 #define I40E_REG_MSS          0x000E64DC
6869 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6870 #define I40E_64BYTE_MSS       0x400000
6871         val = rd32(hw, I40E_REG_MSS);
6872         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6873                 val &= ~I40E_REG_MSS_MIN_MASK;
6874                 val |= I40E_64BYTE_MSS;
6875                 wr32(hw, I40E_REG_MSS, val);
6876         }
6877
6878         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6879             (pf->hw.aq.fw_maj_ver < 4)) {
6880                 msleep(75);
6881                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6882                 if (ret)
6883                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6884                                  i40e_stat_str(&pf->hw, ret),
6885                                  i40e_aq_str(&pf->hw,
6886                                              pf->hw.aq.asq_last_status));
6887         }
6888         /* reinit the misc interrupt */
6889         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6890                 ret = i40e_setup_misc_vector(pf);
6891
6892         /* Add a filter to drop all Flow control frames from any VSI from being
6893          * transmitted. By doing so we stop a malicious VF from sending out
6894          * PAUSE or PFC frames and potentially controlling traffic for other
6895          * PF/VF VSIs.
6896          * The FW can still send Flow control frames if enabled.
6897          */
6898         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6899                                                        pf->main_vsi_seid);
6900
6901         /* restart the VSIs that were rebuilt and running before the reset */
6902         i40e_pf_unquiesce_all_vsi(pf);
6903
6904         if (pf->num_alloc_vfs) {
6905                 for (v = 0; v < pf->num_alloc_vfs; v++)
6906                         i40e_reset_vf(&pf->vf[v], true);
6907         }
6908
6909         /* tell the firmware that we're starting */
6910         i40e_send_version(pf);
6911
6912 end_core_reset:
6913         clear_bit(__I40E_RESET_FAILED, &pf->state);
6914 clear_recovery:
6915         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6916 }
6917
6918 /**
6919  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6920  * @pf: board private structure
6921  *
6922  * Close up the VFs and other things in prep for a Core Reset,
6923  * then get ready to rebuild the world.
6924  **/
6925 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6926 {
6927         i40e_prep_for_reset(pf);
6928         i40e_reset_and_rebuild(pf, false);
6929 }
6930
6931 /**
6932  * i40e_handle_mdd_event
6933  * @pf: pointer to the PF structure
6934  *
6935  * Called from the MDD irq handler to identify possibly malicious vfs
6936  **/
6937 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6938 {
6939         struct i40e_hw *hw = &pf->hw;
6940         bool mdd_detected = false;
6941         bool pf_mdd_detected = false;
6942         struct i40e_vf *vf;
6943         u32 reg;
6944         int i;
6945
6946         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6947                 return;
6948
6949         /* find what triggered the MDD event */
6950         reg = rd32(hw, I40E_GL_MDET_TX);
6951         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6952                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6953                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6954                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6955                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6956                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6957                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6958                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6959                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6960                                 pf->hw.func_caps.base_queue;
6961                 if (netif_msg_tx_err(pf))
6962                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6963                                  event, queue, pf_num, vf_num);
6964                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6965                 mdd_detected = true;
6966         }
6967         reg = rd32(hw, I40E_GL_MDET_RX);
6968         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6969                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6970                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6971                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6972                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6973                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6974                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6975                                 pf->hw.func_caps.base_queue;
6976                 if (netif_msg_rx_err(pf))
6977                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6978                                  event, queue, func);
6979                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6980                 mdd_detected = true;
6981         }
6982
6983         if (mdd_detected) {
6984                 reg = rd32(hw, I40E_PF_MDET_TX);
6985                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6986                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6987                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6988                         pf_mdd_detected = true;
6989                 }
6990                 reg = rd32(hw, I40E_PF_MDET_RX);
6991                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6992                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6993                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6994                         pf_mdd_detected = true;
6995                 }
6996                 /* Queue belongs to the PF, initiate a reset */
6997                 if (pf_mdd_detected) {
6998                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6999                         i40e_service_event_schedule(pf);
7000                 }
7001         }
7002
7003         /* see if one of the VFs needs its hand slapped */
7004         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7005                 vf = &(pf->vf[i]);
7006                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7007                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7008                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7009                         vf->num_mdd_events++;
7010                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7011                                  i);
7012                 }
7013
7014                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7015                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7016                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7017                         vf->num_mdd_events++;
7018                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7019                                  i);
7020                 }
7021
7022                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7023                         dev_info(&pf->pdev->dev,
7024                                  "Too many MDD events on VF %d, disabled\n", i);
7025                         dev_info(&pf->pdev->dev,
7026                                  "Use PF Control I/F to re-enable the VF\n");
7027                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7028                 }
7029         }
7030
7031         /* re-enable mdd interrupt cause */
7032         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7033         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7034         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7035         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7036         i40e_flush(hw);
7037 }
7038
7039 #ifdef CONFIG_I40E_VXLAN
7040 /**
7041  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7042  * @pf: board private structure
7043  **/
7044 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7045 {
7046         struct i40e_hw *hw = &pf->hw;
7047         i40e_status ret;
7048         __be16 port;
7049         int i;
7050
7051         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7052                 return;
7053
7054         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7055
7056         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7057                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7058                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7059                         port = pf->vxlan_ports[i];
7060                         if (port)
7061                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7062                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7063                                                      NULL, NULL);
7064                         else
7065                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7066
7067                         if (ret) {
7068                                 dev_info(&pf->pdev->dev,
7069                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7070                                          port ? "add" : "delete",
7071                                          ntohs(port), i,
7072                                          i40e_stat_str(&pf->hw, ret),
7073                                          i40e_aq_str(&pf->hw,
7074                                                     pf->hw.aq.asq_last_status));
7075                                 pf->vxlan_ports[i] = 0;
7076                         }
7077                 }
7078         }
7079 }
7080
7081 #endif
7082 /**
7083  * i40e_service_task - Run the driver's async subtasks
7084  * @work: pointer to work_struct containing our data
7085  **/
7086 static void i40e_service_task(struct work_struct *work)
7087 {
7088         struct i40e_pf *pf = container_of(work,
7089                                           struct i40e_pf,
7090                                           service_task);
7091         unsigned long start_time = jiffies;
7092
7093         /* don't bother with service tasks if a reset is in progress */
7094         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7095                 i40e_service_event_complete(pf);
7096                 return;
7097         }
7098
7099         i40e_detect_recover_hung(pf);
7100         i40e_reset_subtask(pf);
7101         i40e_handle_mdd_event(pf);
7102         i40e_vc_process_vflr_event(pf);
7103         i40e_watchdog_subtask(pf);
7104         i40e_fdir_reinit_subtask(pf);
7105         i40e_sync_filters_subtask(pf);
7106 #ifdef CONFIG_I40E_VXLAN
7107         i40e_sync_vxlan_filters_subtask(pf);
7108 #endif
7109         i40e_clean_adminq_subtask(pf);
7110
7111         i40e_service_event_complete(pf);
7112
7113         /* If the tasks have taken longer than one timer cycle or there
7114          * is more work to be done, reschedule the service task now
7115          * rather than wait for the timer to tick again.
7116          */
7117         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7118             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7119             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7120             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7121                 i40e_service_event_schedule(pf);
7122 }
7123
7124 /**
7125  * i40e_service_timer - timer callback
7126  * @data: pointer to PF struct
7127  **/
7128 static void i40e_service_timer(unsigned long data)
7129 {
7130         struct i40e_pf *pf = (struct i40e_pf *)data;
7131
7132         mod_timer(&pf->service_timer,
7133                   round_jiffies(jiffies + pf->service_timer_period));
7134         i40e_service_event_schedule(pf);
7135 }
7136
7137 /**
7138  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7139  * @vsi: the VSI being configured
7140  **/
7141 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7142 {
7143         struct i40e_pf *pf = vsi->back;
7144
7145         switch (vsi->type) {
7146         case I40E_VSI_MAIN:
7147                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7148                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7149                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7150                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7151                         vsi->num_q_vectors = pf->num_lan_msix;
7152                 else
7153                         vsi->num_q_vectors = 1;
7154
7155                 break;
7156
7157         case I40E_VSI_FDIR:
7158                 vsi->alloc_queue_pairs = 1;
7159                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7160                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7161                 vsi->num_q_vectors = 1;
7162                 break;
7163
7164         case I40E_VSI_VMDQ2:
7165                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7166                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7167                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7168                 vsi->num_q_vectors = pf->num_vmdq_msix;
7169                 break;
7170
7171         case I40E_VSI_SRIOV:
7172                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7173                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7174                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7175                 break;
7176
7177 #ifdef I40E_FCOE
7178         case I40E_VSI_FCOE:
7179                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7180                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7181                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7182                 vsi->num_q_vectors = pf->num_fcoe_msix;
7183                 break;
7184
7185 #endif /* I40E_FCOE */
7186         default:
7187                 WARN_ON(1);
7188                 return -ENODATA;
7189         }
7190
7191         return 0;
7192 }
7193
7194 /**
7195  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7196  * @type: VSI pointer
7197  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7198  *
7199  * On error: returns error code (negative)
7200  * On success: returns 0
7201  **/
7202 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7203 {
7204         int size;
7205         int ret = 0;
7206
7207         /* allocate memory for both Tx and Rx ring pointers */
7208         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7209         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7210         if (!vsi->tx_rings)
7211                 return -ENOMEM;
7212         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7213
7214         if (alloc_qvectors) {
7215                 /* allocate memory for q_vector pointers */
7216                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7217                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7218                 if (!vsi->q_vectors) {
7219                         ret = -ENOMEM;
7220                         goto err_vectors;
7221                 }
7222         }
7223         return ret;
7224
7225 err_vectors:
7226         kfree(vsi->tx_rings);
7227         return ret;
7228 }
7229
7230 /**
7231  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7232  * @pf: board private structure
7233  * @type: type of VSI
7234  *
7235  * On error: returns error code (negative)
7236  * On success: returns vsi index in PF (positive)
7237  **/
7238 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7239 {
7240         int ret = -ENODEV;
7241         struct i40e_vsi *vsi;
7242         int vsi_idx;
7243         int i;
7244
7245         /* Need to protect the allocation of the VSIs at the PF level */
7246         mutex_lock(&pf->switch_mutex);
7247
7248         /* VSI list may be fragmented if VSI creation/destruction has
7249          * been happening.  We can afford to do a quick scan to look
7250          * for any free VSIs in the list.
7251          *
7252          * find next empty vsi slot, looping back around if necessary
7253          */
7254         i = pf->next_vsi;
7255         while (i < pf->num_alloc_vsi && pf->vsi[i])
7256                 i++;
7257         if (i >= pf->num_alloc_vsi) {
7258                 i = 0;
7259                 while (i < pf->next_vsi && pf->vsi[i])
7260                         i++;
7261         }
7262
7263         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7264                 vsi_idx = i;             /* Found one! */
7265         } else {
7266                 ret = -ENODEV;
7267                 goto unlock_pf;  /* out of VSI slots! */
7268         }
7269         pf->next_vsi = ++i;
7270
7271         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7272         if (!vsi) {
7273                 ret = -ENOMEM;
7274                 goto unlock_pf;
7275         }
7276         vsi->type = type;
7277         vsi->back = pf;
7278         set_bit(__I40E_DOWN, &vsi->state);
7279         vsi->flags = 0;
7280         vsi->idx = vsi_idx;
7281         vsi->rx_itr_setting = pf->rx_itr_default;
7282         vsi->tx_itr_setting = pf->tx_itr_default;
7283         vsi->int_rate_limit = 0;
7284         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7285                                 pf->rss_table_size : 64;
7286         vsi->netdev_registered = false;
7287         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7288         INIT_LIST_HEAD(&vsi->mac_filter_list);
7289         vsi->irqs_ready = false;
7290
7291         ret = i40e_set_num_rings_in_vsi(vsi);
7292         if (ret)
7293                 goto err_rings;
7294
7295         ret = i40e_vsi_alloc_arrays(vsi, true);
7296         if (ret)
7297                 goto err_rings;
7298
7299         /* Setup default MSIX irq handler for VSI */
7300         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7301
7302         /* Initialize VSI lock */
7303         spin_lock_init(&vsi->mac_filter_list_lock);
7304         pf->vsi[vsi_idx] = vsi;
7305         ret = vsi_idx;
7306         goto unlock_pf;
7307
7308 err_rings:
7309         pf->next_vsi = i - 1;
7310         kfree(vsi);
7311 unlock_pf:
7312         mutex_unlock(&pf->switch_mutex);
7313         return ret;
7314 }
7315
7316 /**
7317  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7318  * @type: VSI pointer
7319  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7320  *
7321  * On error: returns error code (negative)
7322  * On success: returns 0
7323  **/
7324 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7325 {
7326         /* free the ring and vector containers */
7327         if (free_qvectors) {
7328                 kfree(vsi->q_vectors);
7329                 vsi->q_vectors = NULL;
7330         }
7331         kfree(vsi->tx_rings);
7332         vsi->tx_rings = NULL;
7333         vsi->rx_rings = NULL;
7334 }
7335
7336 /**
7337  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7338  * and lookup table
7339  * @vsi: Pointer to VSI structure
7340  */
7341 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7342 {
7343         if (!vsi)
7344                 return;
7345
7346         kfree(vsi->rss_hkey_user);
7347         vsi->rss_hkey_user = NULL;
7348
7349         kfree(vsi->rss_lut_user);
7350         vsi->rss_lut_user = NULL;
7351 }
7352
7353 /**
7354  * i40e_vsi_clear - Deallocate the VSI provided
7355  * @vsi: the VSI being un-configured
7356  **/
7357 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7358 {
7359         struct i40e_pf *pf;
7360
7361         if (!vsi)
7362                 return 0;
7363
7364         if (!vsi->back)
7365                 goto free_vsi;
7366         pf = vsi->back;
7367
7368         mutex_lock(&pf->switch_mutex);
7369         if (!pf->vsi[vsi->idx]) {
7370                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7371                         vsi->idx, vsi->idx, vsi, vsi->type);
7372                 goto unlock_vsi;
7373         }
7374
7375         if (pf->vsi[vsi->idx] != vsi) {
7376                 dev_err(&pf->pdev->dev,
7377                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7378                         pf->vsi[vsi->idx]->idx,
7379                         pf->vsi[vsi->idx],
7380                         pf->vsi[vsi->idx]->type,
7381                         vsi->idx, vsi, vsi->type);
7382                 goto unlock_vsi;
7383         }
7384
7385         /* updates the PF for this cleared vsi */
7386         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7387         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7388
7389         i40e_vsi_free_arrays(vsi, true);
7390         i40e_clear_rss_config_user(vsi);
7391
7392         pf->vsi[vsi->idx] = NULL;
7393         if (vsi->idx < pf->next_vsi)
7394                 pf->next_vsi = vsi->idx;
7395
7396 unlock_vsi:
7397         mutex_unlock(&pf->switch_mutex);
7398 free_vsi:
7399         kfree(vsi);
7400
7401         return 0;
7402 }
7403
7404 /**
7405  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7406  * @vsi: the VSI being cleaned
7407  **/
7408 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7409 {
7410         int i;
7411
7412         if (vsi->tx_rings && vsi->tx_rings[0]) {
7413                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7414                         kfree_rcu(vsi->tx_rings[i], rcu);
7415                         vsi->tx_rings[i] = NULL;
7416                         vsi->rx_rings[i] = NULL;
7417                 }
7418         }
7419 }
7420
7421 /**
7422  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7423  * @vsi: the VSI being configured
7424  **/
7425 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7426 {
7427         struct i40e_ring *tx_ring, *rx_ring;
7428         struct i40e_pf *pf = vsi->back;
7429         int i;
7430
7431         /* Set basic values in the rings to be used later during open() */
7432         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7433                 /* allocate space for both Tx and Rx in one shot */
7434                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7435                 if (!tx_ring)
7436                         goto err_out;
7437
7438                 tx_ring->queue_index = i;
7439                 tx_ring->reg_idx = vsi->base_queue + i;
7440                 tx_ring->ring_active = false;
7441                 tx_ring->vsi = vsi;
7442                 tx_ring->netdev = vsi->netdev;
7443                 tx_ring->dev = &pf->pdev->dev;
7444                 tx_ring->count = vsi->num_desc;
7445                 tx_ring->size = 0;
7446                 tx_ring->dcb_tc = 0;
7447                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7448                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7449                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7450                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7451                 vsi->tx_rings[i] = tx_ring;
7452
7453                 rx_ring = &tx_ring[1];
7454                 rx_ring->queue_index = i;
7455                 rx_ring->reg_idx = vsi->base_queue + i;
7456                 rx_ring->ring_active = false;
7457                 rx_ring->vsi = vsi;
7458                 rx_ring->netdev = vsi->netdev;
7459                 rx_ring->dev = &pf->pdev->dev;
7460                 rx_ring->count = vsi->num_desc;
7461                 rx_ring->size = 0;
7462                 rx_ring->dcb_tc = 0;
7463                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7464                         set_ring_16byte_desc_enabled(rx_ring);
7465                 else
7466                         clear_ring_16byte_desc_enabled(rx_ring);
7467                 vsi->rx_rings[i] = rx_ring;
7468         }
7469
7470         return 0;
7471
7472 err_out:
7473         i40e_vsi_clear_rings(vsi);
7474         return -ENOMEM;
7475 }
7476
7477 /**
7478  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7479  * @pf: board private structure
7480  * @vectors: the number of MSI-X vectors to request
7481  *
7482  * Returns the number of vectors reserved, or error
7483  **/
7484 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7485 {
7486         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7487                                         I40E_MIN_MSIX, vectors);
7488         if (vectors < 0) {
7489                 dev_info(&pf->pdev->dev,
7490                          "MSI-X vector reservation failed: %d\n", vectors);
7491                 vectors = 0;
7492         }
7493
7494         return vectors;
7495 }
7496
7497 /**
7498  * i40e_init_msix - Setup the MSIX capability
7499  * @pf: board private structure
7500  *
7501  * Work with the OS to set up the MSIX vectors needed.
7502  *
7503  * Returns the number of vectors reserved or negative on failure
7504  **/
7505 static int i40e_init_msix(struct i40e_pf *pf)
7506 {
7507         struct i40e_hw *hw = &pf->hw;
7508         int vectors_left;
7509         int v_budget, i;
7510         int v_actual;
7511
7512         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7513                 return -ENODEV;
7514
7515         /* The number of vectors we'll request will be comprised of:
7516          *   - Add 1 for "other" cause for Admin Queue events, etc.
7517          *   - The number of LAN queue pairs
7518          *      - Queues being used for RSS.
7519          *              We don't need as many as max_rss_size vectors.
7520          *              use rss_size instead in the calculation since that
7521          *              is governed by number of cpus in the system.
7522          *      - assumes symmetric Tx/Rx pairing
7523          *   - The number of VMDq pairs
7524 #ifdef I40E_FCOE
7525          *   - The number of FCOE qps.
7526 #endif
7527          * Once we count this up, try the request.
7528          *
7529          * If we can't get what we want, we'll simplify to nearly nothing
7530          * and try again.  If that still fails, we punt.
7531          */
7532         vectors_left = hw->func_caps.num_msix_vectors;
7533         v_budget = 0;
7534
7535         /* reserve one vector for miscellaneous handler */
7536         if (vectors_left) {
7537                 v_budget++;
7538                 vectors_left--;
7539         }
7540
7541         /* reserve vectors for the main PF traffic queues */
7542         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7543         vectors_left -= pf->num_lan_msix;
7544         v_budget += pf->num_lan_msix;
7545
7546         /* reserve one vector for sideband flow director */
7547         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7548                 if (vectors_left) {
7549                         v_budget++;
7550                         vectors_left--;
7551                 } else {
7552                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7553                 }
7554         }
7555
7556 #ifdef I40E_FCOE
7557         /* can we reserve enough for FCoE? */
7558         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7559                 if (!vectors_left)
7560                         pf->num_fcoe_msix = 0;
7561                 else if (vectors_left >= pf->num_fcoe_qps)
7562                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7563                 else
7564                         pf->num_fcoe_msix = 1;
7565                 v_budget += pf->num_fcoe_msix;
7566                 vectors_left -= pf->num_fcoe_msix;
7567         }
7568
7569 #endif
7570         /* any vectors left over go for VMDq support */
7571         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7572                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7573                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7574
7575                 /* if we're short on vectors for what's desired, we limit
7576                  * the queues per vmdq.  If this is still more than are
7577                  * available, the user will need to change the number of
7578                  * queues/vectors used by the PF later with the ethtool
7579                  * channels command
7580                  */
7581                 if (vmdq_vecs < vmdq_vecs_wanted)
7582                         pf->num_vmdq_qps = 1;
7583                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7584
7585                 v_budget += vmdq_vecs;
7586                 vectors_left -= vmdq_vecs;
7587         }
7588
7589         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7590                                    GFP_KERNEL);
7591         if (!pf->msix_entries)
7592                 return -ENOMEM;
7593
7594         for (i = 0; i < v_budget; i++)
7595                 pf->msix_entries[i].entry = i;
7596         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7597
7598         if (v_actual != v_budget) {
7599                 /* If we have limited resources, we will start with no vectors
7600                  * for the special features and then allocate vectors to some
7601                  * of these features based on the policy and at the end disable
7602                  * the features that did not get any vectors.
7603                  */
7604 #ifdef I40E_FCOE
7605                 pf->num_fcoe_qps = 0;
7606                 pf->num_fcoe_msix = 0;
7607 #endif
7608                 pf->num_vmdq_msix = 0;
7609         }
7610
7611         if (v_actual < I40E_MIN_MSIX) {
7612                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7613                 kfree(pf->msix_entries);
7614                 pf->msix_entries = NULL;
7615                 return -ENODEV;
7616
7617         } else if (v_actual == I40E_MIN_MSIX) {
7618                 /* Adjust for minimal MSIX use */
7619                 pf->num_vmdq_vsis = 0;
7620                 pf->num_vmdq_qps = 0;
7621                 pf->num_lan_qps = 1;
7622                 pf->num_lan_msix = 1;
7623
7624         } else if (v_actual != v_budget) {
7625                 int vec;
7626
7627                 /* reserve the misc vector */
7628                 vec = v_actual - 1;
7629
7630                 /* Scale vector usage down */
7631                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7632                 pf->num_vmdq_vsis = 1;
7633                 pf->num_vmdq_qps = 1;
7634                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7635
7636                 /* partition out the remaining vectors */
7637                 switch (vec) {
7638                 case 2:
7639                         pf->num_lan_msix = 1;
7640                         break;
7641                 case 3:
7642 #ifdef I40E_FCOE
7643                         /* give one vector to FCoE */
7644                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7645                                 pf->num_lan_msix = 1;
7646                                 pf->num_fcoe_msix = 1;
7647                         }
7648 #else
7649                         pf->num_lan_msix = 2;
7650 #endif
7651                         break;
7652                 default:
7653 #ifdef I40E_FCOE
7654                         /* give one vector to FCoE */
7655                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7656                                 pf->num_fcoe_msix = 1;
7657                                 vec--;
7658                         }
7659 #endif
7660                         /* give the rest to the PF */
7661                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7662                         break;
7663                 }
7664         }
7665
7666         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7667             (pf->num_vmdq_msix == 0)) {
7668                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7669                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7670         }
7671 #ifdef I40E_FCOE
7672
7673         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7674                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7675                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7676         }
7677 #endif
7678         return v_actual;
7679 }
7680
7681 /**
7682  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7683  * @vsi: the VSI being configured
7684  * @v_idx: index of the vector in the vsi struct
7685  *
7686  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7687  **/
7688 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7689 {
7690         struct i40e_q_vector *q_vector;
7691
7692         /* allocate q_vector */
7693         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7694         if (!q_vector)
7695                 return -ENOMEM;
7696
7697         q_vector->vsi = vsi;
7698         q_vector->v_idx = v_idx;
7699         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7700         if (vsi->netdev)
7701                 netif_napi_add(vsi->netdev, &q_vector->napi,
7702                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7703
7704         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7705         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7706
7707         /* tie q_vector and vsi together */
7708         vsi->q_vectors[v_idx] = q_vector;
7709
7710         return 0;
7711 }
7712
7713 /**
7714  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7715  * @vsi: the VSI being configured
7716  *
7717  * We allocate one q_vector per queue interrupt.  If allocation fails we
7718  * return -ENOMEM.
7719  **/
7720 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7721 {
7722         struct i40e_pf *pf = vsi->back;
7723         int v_idx, num_q_vectors;
7724         int err;
7725
7726         /* if not MSIX, give the one vector only to the LAN VSI */
7727         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7728                 num_q_vectors = vsi->num_q_vectors;
7729         else if (vsi == pf->vsi[pf->lan_vsi])
7730                 num_q_vectors = 1;
7731         else
7732                 return -EINVAL;
7733
7734         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7735                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7736                 if (err)
7737                         goto err_out;
7738         }
7739
7740         return 0;
7741
7742 err_out:
7743         while (v_idx--)
7744                 i40e_free_q_vector(vsi, v_idx);
7745
7746         return err;
7747 }
7748
7749 /**
7750  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7751  * @pf: board private structure to initialize
7752  **/
7753 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7754 {
7755         int vectors = 0;
7756         ssize_t size;
7757
7758         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7759                 vectors = i40e_init_msix(pf);
7760                 if (vectors < 0) {
7761                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7762 #ifdef I40E_FCOE
7763                                        I40E_FLAG_FCOE_ENABLED   |
7764 #endif
7765                                        I40E_FLAG_RSS_ENABLED    |
7766                                        I40E_FLAG_DCB_CAPABLE    |
7767                                        I40E_FLAG_SRIOV_ENABLED  |
7768                                        I40E_FLAG_FD_SB_ENABLED  |
7769                                        I40E_FLAG_FD_ATR_ENABLED |
7770                                        I40E_FLAG_VMDQ_ENABLED);
7771
7772                         /* rework the queue expectations without MSIX */
7773                         i40e_determine_queue_usage(pf);
7774                 }
7775         }
7776
7777         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7778             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7779                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7780                 vectors = pci_enable_msi(pf->pdev);
7781                 if (vectors < 0) {
7782                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7783                                  vectors);
7784                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7785                 }
7786                 vectors = 1;  /* one MSI or Legacy vector */
7787         }
7788
7789         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7790                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7791
7792         /* set up vector assignment tracking */
7793         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7794         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7795         if (!pf->irq_pile) {
7796                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7797                 return -ENOMEM;
7798         }
7799         pf->irq_pile->num_entries = vectors;
7800         pf->irq_pile->search_hint = 0;
7801
7802         /* track first vector for misc interrupts, ignore return */
7803         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7804
7805         return 0;
7806 }
7807
7808 /**
7809  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7810  * @pf: board private structure
7811  *
7812  * This sets up the handler for MSIX 0, which is used to manage the
7813  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7814  * when in MSI or Legacy interrupt mode.
7815  **/
7816 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7817 {
7818         struct i40e_hw *hw = &pf->hw;
7819         int err = 0;
7820
7821         /* Only request the irq if this is the first time through, and
7822          * not when we're rebuilding after a Reset
7823          */
7824         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7825                 err = request_irq(pf->msix_entries[0].vector,
7826                                   i40e_intr, 0, pf->int_name, pf);
7827                 if (err) {
7828                         dev_info(&pf->pdev->dev,
7829                                  "request_irq for %s failed: %d\n",
7830                                  pf->int_name, err);
7831                         return -EFAULT;
7832                 }
7833         }
7834
7835         i40e_enable_misc_int_causes(pf);
7836
7837         /* associate no queues to the misc vector */
7838         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7839         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7840
7841         i40e_flush(hw);
7842
7843         i40e_irq_dynamic_enable_icr0(pf);
7844
7845         return err;
7846 }
7847
7848 /**
7849  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7850  * @vsi: vsi structure
7851  * @seed: RSS hash seed
7852  **/
7853 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7854                               u8 *lut, u16 lut_size)
7855 {
7856         struct i40e_aqc_get_set_rss_key_data rss_key;
7857         struct i40e_pf *pf = vsi->back;
7858         struct i40e_hw *hw = &pf->hw;
7859         bool pf_lut = false;
7860         u8 *rss_lut;
7861         int ret, i;
7862
7863         memset(&rss_key, 0, sizeof(rss_key));
7864         memcpy(&rss_key, seed, sizeof(rss_key));
7865
7866         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7867         if (!rss_lut)
7868                 return -ENOMEM;
7869
7870         /* Populate the LUT with max no. of queues in round robin fashion */
7871         for (i = 0; i < vsi->rss_table_size; i++)
7872                 rss_lut[i] = i % vsi->rss_size;
7873
7874         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7875         if (ret) {
7876                 dev_info(&pf->pdev->dev,
7877                          "Cannot set RSS key, err %s aq_err %s\n",
7878                          i40e_stat_str(&pf->hw, ret),
7879                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7880                 goto config_rss_aq_out;
7881         }
7882
7883         if (vsi->type == I40E_VSI_MAIN)
7884                 pf_lut = true;
7885
7886         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7887                                   vsi->rss_table_size);
7888         if (ret)
7889                 dev_info(&pf->pdev->dev,
7890                          "Cannot set RSS lut, err %s aq_err %s\n",
7891                          i40e_stat_str(&pf->hw, ret),
7892                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7893
7894 config_rss_aq_out:
7895         kfree(rss_lut);
7896         return ret;
7897 }
7898
7899 /**
7900  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7901  * @vsi: VSI structure
7902  **/
7903 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7904 {
7905         u8 seed[I40E_HKEY_ARRAY_SIZE];
7906         struct i40e_pf *pf = vsi->back;
7907         u8 *lut;
7908         int ret;
7909
7910         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7911                 return 0;
7912
7913         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7914         if (!lut)
7915                 return -ENOMEM;
7916
7917         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7918         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7919         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7920         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7921         kfree(lut);
7922
7923         return ret;
7924 }
7925
7926 /**
7927  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7928  * @vsi: Pointer to vsi structure
7929  * @seed: RSS hash seed
7930  * @lut: Lookup table
7931  * @lut_size: Lookup table size
7932  *
7933  * Returns 0 on success, negative on failure
7934  **/
7935 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7936                                const u8 *lut, u16 lut_size)
7937 {
7938         struct i40e_pf *pf = vsi->back;
7939         struct i40e_hw *hw = &pf->hw;
7940         u8 i;
7941
7942         /* Fill out hash function seed */
7943         if (seed) {
7944                 u32 *seed_dw = (u32 *)seed;
7945
7946                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7947                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7948         }
7949
7950         if (lut) {
7951                 u32 *lut_dw = (u32 *)lut;
7952
7953                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7954                         return -EINVAL;
7955
7956                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7957                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7958         }
7959         i40e_flush(hw);
7960
7961         return 0;
7962 }
7963
7964 /**
7965  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7966  * @vsi: Pointer to VSI structure
7967  * @seed: Buffer to store the keys
7968  * @lut: Buffer to store the lookup table entries
7969  * @lut_size: Size of buffer to store the lookup table entries
7970  *
7971  * Returns 0 on success, negative on failure
7972  */
7973 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7974                             u8 *lut, u16 lut_size)
7975 {
7976         struct i40e_pf *pf = vsi->back;
7977         struct i40e_hw *hw = &pf->hw;
7978         u16 i;
7979
7980         if (seed) {
7981                 u32 *seed_dw = (u32 *)seed;
7982
7983                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7984                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
7985         }
7986         if (lut) {
7987                 u32 *lut_dw = (u32 *)lut;
7988
7989                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7990                         return -EINVAL;
7991                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7992                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
7993         }
7994
7995         return 0;
7996 }
7997
7998 /**
7999  * i40e_config_rss - Configure RSS keys and lut
8000  * @vsi: Pointer to VSI structure
8001  * @seed: RSS hash seed
8002  * @lut: Lookup table
8003  * @lut_size: Lookup table size
8004  *
8005  * Returns 0 on success, negative on failure
8006  */
8007 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8008 {
8009         struct i40e_pf *pf = vsi->back;
8010
8011         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8012                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8013         else
8014                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8015 }
8016
8017 /**
8018  * i40e_get_rss - Get RSS keys and lut
8019  * @vsi: Pointer to VSI structure
8020  * @seed: Buffer to store the keys
8021  * @lut: Buffer to store the lookup table entries
8022  * lut_size: Size of buffer to store the lookup table entries
8023  *
8024  * Returns 0 on success, negative on failure
8025  */
8026 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8027 {
8028         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8029 }
8030
8031 /**
8032  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8033  * @pf: Pointer to board private structure
8034  * @lut: Lookup table
8035  * @rss_table_size: Lookup table size
8036  * @rss_size: Range of queue number for hashing
8037  */
8038 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8039                               u16 rss_table_size, u16 rss_size)
8040 {
8041         u16 i;
8042
8043         for (i = 0; i < rss_table_size; i++)
8044                 lut[i] = i % rss_size;
8045 }
8046
8047 /**
8048  * i40e_pf_config_rss - Prepare for RSS if used
8049  * @pf: board private structure
8050  **/
8051 static int i40e_pf_config_rss(struct i40e_pf *pf)
8052 {
8053         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8054         u8 seed[I40E_HKEY_ARRAY_SIZE];
8055         u8 *lut;
8056         struct i40e_hw *hw = &pf->hw;
8057         u32 reg_val;
8058         u64 hena;
8059         int ret;
8060
8061         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8062         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8063                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8064         hena |= i40e_pf_get_default_rss_hena(pf);
8065
8066         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8067         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8068
8069         /* Determine the RSS table size based on the hardware capabilities */
8070         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8071         reg_val = (pf->rss_table_size == 512) ?
8072                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8073                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8074         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8075
8076         /* Determine the RSS size of the VSI */
8077         if (!vsi->rss_size)
8078                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8079                                       vsi->num_queue_pairs);
8080
8081         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8082         if (!lut)
8083                 return -ENOMEM;
8084
8085         /* Use user configured lut if there is one, otherwise use default */
8086         if (vsi->rss_lut_user)
8087                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8088         else
8089                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8090
8091         /* Use user configured hash key if there is one, otherwise
8092          * use default.
8093          */
8094         if (vsi->rss_hkey_user)
8095                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8096         else
8097                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8098         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8099         kfree(lut);
8100
8101         return ret;
8102 }
8103
8104 /**
8105  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8106  * @pf: board private structure
8107  * @queue_count: the requested queue count for rss.
8108  *
8109  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8110  * count which may be different from the requested queue count.
8111  **/
8112 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8113 {
8114         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8115         int new_rss_size;
8116
8117         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8118                 return 0;
8119
8120         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8121
8122         if (queue_count != vsi->num_queue_pairs) {
8123                 vsi->req_queue_pairs = queue_count;
8124                 i40e_prep_for_reset(pf);
8125
8126                 pf->alloc_rss_size = new_rss_size;
8127
8128                 i40e_reset_and_rebuild(pf, true);
8129
8130                 /* Discard the user configured hash keys and lut, if less
8131                  * queues are enabled.
8132                  */
8133                 if (queue_count < vsi->rss_size) {
8134                         i40e_clear_rss_config_user(vsi);
8135                         dev_dbg(&pf->pdev->dev,
8136                                 "discard user configured hash keys and lut\n");
8137                 }
8138
8139                 /* Reset vsi->rss_size, as number of enabled queues changed */
8140                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8141                                       vsi->num_queue_pairs);
8142
8143                 i40e_pf_config_rss(pf);
8144         }
8145         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8146                  pf->alloc_rss_size, pf->rss_size_max);
8147         return pf->alloc_rss_size;
8148 }
8149
8150 /**
8151  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8152  * @pf: board private structure
8153  **/
8154 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8155 {
8156         i40e_status status;
8157         bool min_valid, max_valid;
8158         u32 max_bw, min_bw;
8159
8160         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8161                                            &min_valid, &max_valid);
8162
8163         if (!status) {
8164                 if (min_valid)
8165                         pf->npar_min_bw = min_bw;
8166                 if (max_valid)
8167                         pf->npar_max_bw = max_bw;
8168         }
8169
8170         return status;
8171 }
8172
8173 /**
8174  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8175  * @pf: board private structure
8176  **/
8177 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8178 {
8179         struct i40e_aqc_configure_partition_bw_data bw_data;
8180         i40e_status status;
8181
8182         /* Set the valid bit for this PF */
8183         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8184         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8185         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8186
8187         /* Set the new bandwidths */
8188         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8189
8190         return status;
8191 }
8192
8193 /**
8194  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8195  * @pf: board private structure
8196  **/
8197 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8198 {
8199         /* Commit temporary BW setting to permanent NVM image */
8200         enum i40e_admin_queue_err last_aq_status;
8201         i40e_status ret;
8202         u16 nvm_word;
8203
8204         if (pf->hw.partition_id != 1) {
8205                 dev_info(&pf->pdev->dev,
8206                          "Commit BW only works on partition 1! This is partition %d",
8207                          pf->hw.partition_id);
8208                 ret = I40E_NOT_SUPPORTED;
8209                 goto bw_commit_out;
8210         }
8211
8212         /* Acquire NVM for read access */
8213         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8214         last_aq_status = pf->hw.aq.asq_last_status;
8215         if (ret) {
8216                 dev_info(&pf->pdev->dev,
8217                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8218                          i40e_stat_str(&pf->hw, ret),
8219                          i40e_aq_str(&pf->hw, last_aq_status));
8220                 goto bw_commit_out;
8221         }
8222
8223         /* Read word 0x10 of NVM - SW compatibility word 1 */
8224         ret = i40e_aq_read_nvm(&pf->hw,
8225                                I40E_SR_NVM_CONTROL_WORD,
8226                                0x10, sizeof(nvm_word), &nvm_word,
8227                                false, NULL);
8228         /* Save off last admin queue command status before releasing
8229          * the NVM
8230          */
8231         last_aq_status = pf->hw.aq.asq_last_status;
8232         i40e_release_nvm(&pf->hw);
8233         if (ret) {
8234                 dev_info(&pf->pdev->dev, "NVM read error, 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         /* Wait a bit for NVM release to complete */
8241         msleep(50);
8242
8243         /* Acquire NVM for write access */
8244         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8245         last_aq_status = pf->hw.aq.asq_last_status;
8246         if (ret) {
8247                 dev_info(&pf->pdev->dev,
8248                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8249                          i40e_stat_str(&pf->hw, ret),
8250                          i40e_aq_str(&pf->hw, last_aq_status));
8251                 goto bw_commit_out;
8252         }
8253         /* Write it back out unchanged to initiate update NVM,
8254          * which will force a write of the shadow (alt) RAM to
8255          * the NVM - thus storing the bandwidth values permanently.
8256          */
8257         ret = i40e_aq_update_nvm(&pf->hw,
8258                                  I40E_SR_NVM_CONTROL_WORD,
8259                                  0x10, sizeof(nvm_word),
8260                                  &nvm_word, true, NULL);
8261         /* Save off last admin queue command status before releasing
8262          * the NVM
8263          */
8264         last_aq_status = pf->hw.aq.asq_last_status;
8265         i40e_release_nvm(&pf->hw);
8266         if (ret)
8267                 dev_info(&pf->pdev->dev,
8268                          "BW settings NOT SAVED, err %s aq_err %s\n",
8269                          i40e_stat_str(&pf->hw, ret),
8270                          i40e_aq_str(&pf->hw, last_aq_status));
8271 bw_commit_out:
8272
8273         return ret;
8274 }
8275
8276 /**
8277  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8278  * @pf: board private structure to initialize
8279  *
8280  * i40e_sw_init initializes the Adapter private data structure.
8281  * Fields are initialized based on PCI device information and
8282  * OS network device settings (MTU size).
8283  **/
8284 static int i40e_sw_init(struct i40e_pf *pf)
8285 {
8286         int err = 0;
8287         int size;
8288
8289         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8290                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8291         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8292         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8293                 if (I40E_DEBUG_USER & debug)
8294                         pf->hw.debug_mask = debug;
8295                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8296                                                 I40E_DEFAULT_MSG_ENABLE);
8297         }
8298
8299         /* Set default capability flags */
8300         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8301                     I40E_FLAG_MSI_ENABLED     |
8302                     I40E_FLAG_LINK_POLLING_ENABLED |
8303                     I40E_FLAG_MSIX_ENABLED;
8304
8305         if (iommu_present(&pci_bus_type))
8306                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8307         else
8308                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8309
8310         /* Set default ITR */
8311         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8312         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8313
8314         /* Depending on PF configurations, it is possible that the RSS
8315          * maximum might end up larger than the available queues
8316          */
8317         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8318         pf->alloc_rss_size = 1;
8319         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8320         pf->rss_size_max = min_t(int, pf->rss_size_max,
8321                                  pf->hw.func_caps.num_tx_qp);
8322         if (pf->hw.func_caps.rss) {
8323                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8324                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8325                                            num_online_cpus());
8326         }
8327
8328         /* MFP mode enabled */
8329         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8330                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8331                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8332                 if (i40e_get_npar_bw_setting(pf))
8333                         dev_warn(&pf->pdev->dev,
8334                                  "Could not get NPAR bw settings\n");
8335                 else
8336                         dev_info(&pf->pdev->dev,
8337                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8338                                  pf->npar_min_bw, pf->npar_max_bw);
8339         }
8340
8341         /* FW/NVM is not yet fixed in this regard */
8342         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8343             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8344                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8345                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8346                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8347                     pf->hw.num_partitions > 1)
8348                         dev_info(&pf->pdev->dev,
8349                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8350                 else
8351                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8352                 pf->fdir_pf_filter_count =
8353                                  pf->hw.func_caps.fd_filters_guaranteed;
8354                 pf->hw.fdir_shared_filter_count =
8355                                  pf->hw.func_caps.fd_filters_best_effort;
8356         }
8357
8358         if (pf->hw.func_caps.vmdq) {
8359                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8360                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8361                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8362         }
8363
8364 #ifdef I40E_FCOE
8365         i40e_init_pf_fcoe(pf);
8366
8367 #endif /* I40E_FCOE */
8368 #ifdef CONFIG_PCI_IOV
8369         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8370                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8371                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8372                 pf->num_req_vfs = min_t(int,
8373                                         pf->hw.func_caps.num_vfs,
8374                                         I40E_MAX_VF_COUNT);
8375         }
8376 #endif /* CONFIG_PCI_IOV */
8377         if (pf->hw.mac.type == I40E_MAC_X722) {
8378                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8379                              I40E_FLAG_128_QP_RSS_CAPABLE |
8380                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8381                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8382                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8383                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8384         }
8385         pf->eeprom_version = 0xDEAD;
8386         pf->lan_veb = I40E_NO_VEB;
8387         pf->lan_vsi = I40E_NO_VSI;
8388
8389         /* By default FW has this off for performance reasons */
8390         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8391
8392         /* set up queue assignment tracking */
8393         size = sizeof(struct i40e_lump_tracking)
8394                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8395         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8396         if (!pf->qp_pile) {
8397                 err = -ENOMEM;
8398                 goto sw_init_done;
8399         }
8400         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8401         pf->qp_pile->search_hint = 0;
8402
8403         pf->tx_timeout_recovery_level = 1;
8404
8405         mutex_init(&pf->switch_mutex);
8406
8407         /* If NPAR is enabled nudge the Tx scheduler */
8408         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8409                 i40e_set_npar_bw_setting(pf);
8410
8411 sw_init_done:
8412         return err;
8413 }
8414
8415 /**
8416  * i40e_set_ntuple - set the ntuple feature flag and take action
8417  * @pf: board private structure to initialize
8418  * @features: the feature set that the stack is suggesting
8419  *
8420  * returns a bool to indicate if reset needs to happen
8421  **/
8422 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8423 {
8424         bool need_reset = false;
8425
8426         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8427          * the state changed, we need to reset.
8428          */
8429         if (features & NETIF_F_NTUPLE) {
8430                 /* Enable filters and mark for reset */
8431                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8432                         need_reset = true;
8433                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8434         } else {
8435                 /* turn off filters, mark for reset and clear SW filter list */
8436                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8437                         need_reset = true;
8438                         i40e_fdir_filter_exit(pf);
8439                 }
8440                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8441                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8442                 /* reset fd counters */
8443                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8444                 pf->fdir_pf_active_filters = 0;
8445                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8446                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8447                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8448                 /* if ATR was auto disabled it can be re-enabled. */
8449                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8450                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8451                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8452         }
8453         return need_reset;
8454 }
8455
8456 /**
8457  * i40e_set_features - set the netdev feature flags
8458  * @netdev: ptr to the netdev being adjusted
8459  * @features: the feature set that the stack is suggesting
8460  **/
8461 static int i40e_set_features(struct net_device *netdev,
8462                              netdev_features_t features)
8463 {
8464         struct i40e_netdev_priv *np = netdev_priv(netdev);
8465         struct i40e_vsi *vsi = np->vsi;
8466         struct i40e_pf *pf = vsi->back;
8467         bool need_reset;
8468
8469         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8470                 i40e_vlan_stripping_enable(vsi);
8471         else
8472                 i40e_vlan_stripping_disable(vsi);
8473
8474         need_reset = i40e_set_ntuple(pf, features);
8475
8476         if (need_reset)
8477                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8478
8479         return 0;
8480 }
8481
8482 #ifdef CONFIG_I40E_VXLAN
8483 /**
8484  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8485  * @pf: board private structure
8486  * @port: The UDP port to look up
8487  *
8488  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8489  **/
8490 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8491 {
8492         u8 i;
8493
8494         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8495                 if (pf->vxlan_ports[i] == port)
8496                         return i;
8497         }
8498
8499         return i;
8500 }
8501
8502 /**
8503  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8504  * @netdev: This physical port's netdev
8505  * @sa_family: Socket Family that VXLAN is notifying us about
8506  * @port: New UDP port number that VXLAN started listening to
8507  **/
8508 static void i40e_add_vxlan_port(struct net_device *netdev,
8509                                 sa_family_t sa_family, __be16 port)
8510 {
8511         struct i40e_netdev_priv *np = netdev_priv(netdev);
8512         struct i40e_vsi *vsi = np->vsi;
8513         struct i40e_pf *pf = vsi->back;
8514         u8 next_idx;
8515         u8 idx;
8516
8517         if (sa_family == AF_INET6)
8518                 return;
8519
8520         idx = i40e_get_vxlan_port_idx(pf, port);
8521
8522         /* Check if port already exists */
8523         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8524                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8525                             ntohs(port));
8526                 return;
8527         }
8528
8529         /* Now check if there is space to add the new port */
8530         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8531
8532         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8533                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8534                             ntohs(port));
8535                 return;
8536         }
8537
8538         /* New port: add it and mark its index in the bitmap */
8539         pf->vxlan_ports[next_idx] = port;
8540         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8541         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8542 }
8543
8544 /**
8545  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8546  * @netdev: This physical port's netdev
8547  * @sa_family: Socket Family that VXLAN is notifying us about
8548  * @port: UDP port number that VXLAN stopped listening to
8549  **/
8550 static void i40e_del_vxlan_port(struct net_device *netdev,
8551                                 sa_family_t sa_family, __be16 port)
8552 {
8553         struct i40e_netdev_priv *np = netdev_priv(netdev);
8554         struct i40e_vsi *vsi = np->vsi;
8555         struct i40e_pf *pf = vsi->back;
8556         u8 idx;
8557
8558         if (sa_family == AF_INET6)
8559                 return;
8560
8561         idx = i40e_get_vxlan_port_idx(pf, port);
8562
8563         /* Check if port already exists */
8564         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8565                 /* if port exists, set it to 0 (mark for deletion)
8566                  * and make it pending
8567                  */
8568                 pf->vxlan_ports[idx] = 0;
8569                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8570                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8571         } else {
8572                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8573                             ntohs(port));
8574         }
8575 }
8576
8577 #endif
8578 static int i40e_get_phys_port_id(struct net_device *netdev,
8579                                  struct netdev_phys_item_id *ppid)
8580 {
8581         struct i40e_netdev_priv *np = netdev_priv(netdev);
8582         struct i40e_pf *pf = np->vsi->back;
8583         struct i40e_hw *hw = &pf->hw;
8584
8585         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8586                 return -EOPNOTSUPP;
8587
8588         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8589         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8590
8591         return 0;
8592 }
8593
8594 /**
8595  * i40e_ndo_fdb_add - add an entry to the hardware database
8596  * @ndm: the input from the stack
8597  * @tb: pointer to array of nladdr (unused)
8598  * @dev: the net device pointer
8599  * @addr: the MAC address entry being added
8600  * @flags: instructions from stack about fdb operation
8601  */
8602 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8603                             struct net_device *dev,
8604                             const unsigned char *addr, u16 vid,
8605                             u16 flags)
8606 {
8607         struct i40e_netdev_priv *np = netdev_priv(dev);
8608         struct i40e_pf *pf = np->vsi->back;
8609         int err = 0;
8610
8611         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8612                 return -EOPNOTSUPP;
8613
8614         if (vid) {
8615                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8616                 return -EINVAL;
8617         }
8618
8619         /* Hardware does not support aging addresses so if a
8620          * ndm_state is given only allow permanent addresses
8621          */
8622         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8623                 netdev_info(dev, "FDB only supports static addresses\n");
8624                 return -EINVAL;
8625         }
8626
8627         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8628                 err = dev_uc_add_excl(dev, addr);
8629         else if (is_multicast_ether_addr(addr))
8630                 err = dev_mc_add_excl(dev, addr);
8631         else
8632                 err = -EINVAL;
8633
8634         /* Only return duplicate errors if NLM_F_EXCL is set */
8635         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8636                 err = 0;
8637
8638         return err;
8639 }
8640
8641 /**
8642  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8643  * @dev: the netdev being configured
8644  * @nlh: RTNL message
8645  *
8646  * Inserts a new hardware bridge if not already created and
8647  * enables the bridging mode requested (VEB or VEPA). If the
8648  * hardware bridge has already been inserted and the request
8649  * is to change the mode then that requires a PF reset to
8650  * allow rebuild of the components with required hardware
8651  * bridge mode enabled.
8652  **/
8653 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8654                                    struct nlmsghdr *nlh,
8655                                    u16 flags)
8656 {
8657         struct i40e_netdev_priv *np = netdev_priv(dev);
8658         struct i40e_vsi *vsi = np->vsi;
8659         struct i40e_pf *pf = vsi->back;
8660         struct i40e_veb *veb = NULL;
8661         struct nlattr *attr, *br_spec;
8662         int i, rem;
8663
8664         /* Only for PF VSI for now */
8665         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8666                 return -EOPNOTSUPP;
8667
8668         /* Find the HW bridge for PF VSI */
8669         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8670                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8671                         veb = pf->veb[i];
8672         }
8673
8674         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8675
8676         nla_for_each_nested(attr, br_spec, rem) {
8677                 __u16 mode;
8678
8679                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8680                         continue;
8681
8682                 mode = nla_get_u16(attr);
8683                 if ((mode != BRIDGE_MODE_VEPA) &&
8684                     (mode != BRIDGE_MODE_VEB))
8685                         return -EINVAL;
8686
8687                 /* Insert a new HW bridge */
8688                 if (!veb) {
8689                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8690                                              vsi->tc_config.enabled_tc);
8691                         if (veb) {
8692                                 veb->bridge_mode = mode;
8693                                 i40e_config_bridge_mode(veb);
8694                         } else {
8695                                 /* No Bridge HW offload available */
8696                                 return -ENOENT;
8697                         }
8698                         break;
8699                 } else if (mode != veb->bridge_mode) {
8700                         /* Existing HW bridge but different mode needs reset */
8701                         veb->bridge_mode = mode;
8702                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8703                         if (mode == BRIDGE_MODE_VEB)
8704                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8705                         else
8706                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8707                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8708                         break;
8709                 }
8710         }
8711
8712         return 0;
8713 }
8714
8715 /**
8716  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8717  * @skb: skb buff
8718  * @pid: process id
8719  * @seq: RTNL message seq #
8720  * @dev: the netdev being configured
8721  * @filter_mask: unused
8722  * @nlflags: netlink flags passed in
8723  *
8724  * Return the mode in which the hardware bridge is operating in
8725  * i.e VEB or VEPA.
8726  **/
8727 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8728                                    struct net_device *dev,
8729                                    u32 __always_unused filter_mask,
8730                                    int nlflags)
8731 {
8732         struct i40e_netdev_priv *np = netdev_priv(dev);
8733         struct i40e_vsi *vsi = np->vsi;
8734         struct i40e_pf *pf = vsi->back;
8735         struct i40e_veb *veb = NULL;
8736         int i;
8737
8738         /* Only for PF VSI for now */
8739         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8740                 return -EOPNOTSUPP;
8741
8742         /* Find the HW bridge for the PF VSI */
8743         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8744                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8745                         veb = pf->veb[i];
8746         }
8747
8748         if (!veb)
8749                 return 0;
8750
8751         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8752                                        nlflags, 0, 0, filter_mask, NULL);
8753 }
8754
8755 #define I40E_MAX_TUNNEL_HDR_LEN 80
8756 /**
8757  * i40e_features_check - Validate encapsulated packet conforms to limits
8758  * @skb: skb buff
8759  * @dev: This physical port's netdev
8760  * @features: Offload features that the stack believes apply
8761  **/
8762 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8763                                              struct net_device *dev,
8764                                              netdev_features_t features)
8765 {
8766         if (skb->encapsulation &&
8767             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8768              I40E_MAX_TUNNEL_HDR_LEN))
8769                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
8770
8771         return features;
8772 }
8773
8774 static const struct net_device_ops i40e_netdev_ops = {
8775         .ndo_open               = i40e_open,
8776         .ndo_stop               = i40e_close,
8777         .ndo_start_xmit         = i40e_lan_xmit_frame,
8778         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8779         .ndo_set_rx_mode        = i40e_set_rx_mode,
8780         .ndo_validate_addr      = eth_validate_addr,
8781         .ndo_set_mac_address    = i40e_set_mac,
8782         .ndo_change_mtu         = i40e_change_mtu,
8783         .ndo_do_ioctl           = i40e_ioctl,
8784         .ndo_tx_timeout         = i40e_tx_timeout,
8785         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8786         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8787 #ifdef CONFIG_NET_POLL_CONTROLLER
8788         .ndo_poll_controller    = i40e_netpoll,
8789 #endif
8790         .ndo_setup_tc           = i40e_setup_tc,
8791 #ifdef I40E_FCOE
8792         .ndo_fcoe_enable        = i40e_fcoe_enable,
8793         .ndo_fcoe_disable       = i40e_fcoe_disable,
8794 #endif
8795         .ndo_set_features       = i40e_set_features,
8796         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8797         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8798         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8799         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8800         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8801         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8802 #ifdef CONFIG_I40E_VXLAN
8803         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8804         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8805 #endif
8806         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8807         .ndo_fdb_add            = i40e_ndo_fdb_add,
8808         .ndo_features_check     = i40e_features_check,
8809         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8810         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8811 };
8812
8813 /**
8814  * i40e_config_netdev - Setup the netdev flags
8815  * @vsi: the VSI being configured
8816  *
8817  * Returns 0 on success, negative value on failure
8818  **/
8819 static int i40e_config_netdev(struct i40e_vsi *vsi)
8820 {
8821         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8822         struct i40e_pf *pf = vsi->back;
8823         struct i40e_hw *hw = &pf->hw;
8824         struct i40e_netdev_priv *np;
8825         struct net_device *netdev;
8826         u8 mac_addr[ETH_ALEN];
8827         int etherdev_size;
8828
8829         etherdev_size = sizeof(struct i40e_netdev_priv);
8830         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8831         if (!netdev)
8832                 return -ENOMEM;
8833
8834         vsi->netdev = netdev;
8835         np = netdev_priv(netdev);
8836         np->vsi = vsi;
8837
8838         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8839                                   NETIF_F_GSO_UDP_TUNNEL |
8840                                   NETIF_F_GSO_GRE        |
8841                                   NETIF_F_TSO;
8842
8843         netdev->features = NETIF_F_SG                  |
8844                            NETIF_F_IP_CSUM             |
8845                            NETIF_F_SCTP_CRC            |
8846                            NETIF_F_HIGHDMA             |
8847                            NETIF_F_GSO_UDP_TUNNEL      |
8848                            NETIF_F_GSO_GRE             |
8849                            NETIF_F_HW_VLAN_CTAG_TX     |
8850                            NETIF_F_HW_VLAN_CTAG_RX     |
8851                            NETIF_F_HW_VLAN_CTAG_FILTER |
8852                            NETIF_F_IPV6_CSUM           |
8853                            NETIF_F_TSO                 |
8854                            NETIF_F_TSO_ECN             |
8855                            NETIF_F_TSO6                |
8856                            NETIF_F_RXCSUM              |
8857                            NETIF_F_RXHASH              |
8858                            0;
8859
8860         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8861                 netdev->features |= NETIF_F_NTUPLE;
8862
8863         /* copy netdev features into list of user selectable features */
8864         netdev->hw_features |= netdev->features;
8865
8866         if (vsi->type == I40E_VSI_MAIN) {
8867                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8868                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8869                 /* The following steps are necessary to prevent reception
8870                  * of tagged packets - some older NVM configurations load a
8871                  * default a MAC-VLAN filter that accepts any tagged packet
8872                  * which must be replaced by a normal filter.
8873                  */
8874                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8875                         spin_lock_bh(&vsi->mac_filter_list_lock);
8876                         i40e_add_filter(vsi, mac_addr,
8877                                         I40E_VLAN_ANY, false, true);
8878                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8879                 }
8880         } else {
8881                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8882                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8883                          pf->vsi[pf->lan_vsi]->netdev->name);
8884                 random_ether_addr(mac_addr);
8885
8886                 spin_lock_bh(&vsi->mac_filter_list_lock);
8887                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8888                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8889         }
8890
8891         spin_lock_bh(&vsi->mac_filter_list_lock);
8892         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8893         spin_unlock_bh(&vsi->mac_filter_list_lock);
8894
8895         ether_addr_copy(netdev->dev_addr, mac_addr);
8896         ether_addr_copy(netdev->perm_addr, mac_addr);
8897         /* vlan gets same features (except vlan offload)
8898          * after any tweaks for specific VSI types
8899          */
8900         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8901                                                      NETIF_F_HW_VLAN_CTAG_RX |
8902                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8903         netdev->priv_flags |= IFF_UNICAST_FLT;
8904         netdev->priv_flags |= IFF_SUPP_NOFCS;
8905         /* Setup netdev TC information */
8906         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8907
8908         netdev->netdev_ops = &i40e_netdev_ops;
8909         netdev->watchdog_timeo = 5 * HZ;
8910         i40e_set_ethtool_ops(netdev);
8911 #ifdef I40E_FCOE
8912         i40e_fcoe_config_netdev(netdev, vsi);
8913 #endif
8914
8915         return 0;
8916 }
8917
8918 /**
8919  * i40e_vsi_delete - Delete a VSI from the switch
8920  * @vsi: the VSI being removed
8921  *
8922  * Returns 0 on success, negative value on failure
8923  **/
8924 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8925 {
8926         /* remove default VSI is not allowed */
8927         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8928                 return;
8929
8930         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8931 }
8932
8933 /**
8934  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8935  * @vsi: the VSI being queried
8936  *
8937  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8938  **/
8939 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8940 {
8941         struct i40e_veb *veb;
8942         struct i40e_pf *pf = vsi->back;
8943
8944         /* Uplink is not a bridge so default to VEB */
8945         if (vsi->veb_idx == I40E_NO_VEB)
8946                 return 1;
8947
8948         veb = pf->veb[vsi->veb_idx];
8949         if (!veb) {
8950                 dev_info(&pf->pdev->dev,
8951                          "There is no veb associated with the bridge\n");
8952                 return -ENOENT;
8953         }
8954
8955         /* Uplink is a bridge in VEPA mode */
8956         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8957                 return 0;
8958         } else {
8959                 /* Uplink is a bridge in VEB mode */
8960                 return 1;
8961         }
8962
8963         /* VEPA is now default bridge, so return 0 */
8964         return 0;
8965 }
8966
8967 /**
8968  * i40e_add_vsi - Add a VSI to the switch
8969  * @vsi: the VSI being configured
8970  *
8971  * This initializes a VSI context depending on the VSI type to be added and
8972  * passes it down to the add_vsi aq command.
8973  **/
8974 static int i40e_add_vsi(struct i40e_vsi *vsi)
8975 {
8976         int ret = -ENODEV;
8977         u8 laa_macaddr[ETH_ALEN];
8978         bool found_laa_mac_filter = false;
8979         struct i40e_pf *pf = vsi->back;
8980         struct i40e_hw *hw = &pf->hw;
8981         struct i40e_vsi_context ctxt;
8982         struct i40e_mac_filter *f, *ftmp;
8983
8984         u8 enabled_tc = 0x1; /* TC0 enabled */
8985         int f_count = 0;
8986
8987         memset(&ctxt, 0, sizeof(ctxt));
8988         switch (vsi->type) {
8989         case I40E_VSI_MAIN:
8990                 /* The PF's main VSI is already setup as part of the
8991                  * device initialization, so we'll not bother with
8992                  * the add_vsi call, but we will retrieve the current
8993                  * VSI context.
8994                  */
8995                 ctxt.seid = pf->main_vsi_seid;
8996                 ctxt.pf_num = pf->hw.pf_id;
8997                 ctxt.vf_num = 0;
8998                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8999                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9000                 if (ret) {
9001                         dev_info(&pf->pdev->dev,
9002                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9003                                  i40e_stat_str(&pf->hw, ret),
9004                                  i40e_aq_str(&pf->hw,
9005                                              pf->hw.aq.asq_last_status));
9006                         return -ENOENT;
9007                 }
9008                 vsi->info = ctxt.info;
9009                 vsi->info.valid_sections = 0;
9010
9011                 vsi->seid = ctxt.seid;
9012                 vsi->id = ctxt.vsi_number;
9013
9014                 enabled_tc = i40e_pf_get_tc_map(pf);
9015
9016                 /* MFP mode setup queue map and update VSI */
9017                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9018                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9019                         memset(&ctxt, 0, sizeof(ctxt));
9020                         ctxt.seid = pf->main_vsi_seid;
9021                         ctxt.pf_num = pf->hw.pf_id;
9022                         ctxt.vf_num = 0;
9023                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9024                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9025                         if (ret) {
9026                                 dev_info(&pf->pdev->dev,
9027                                          "update vsi failed, err %s aq_err %s\n",
9028                                          i40e_stat_str(&pf->hw, ret),
9029                                          i40e_aq_str(&pf->hw,
9030                                                     pf->hw.aq.asq_last_status));
9031                                 ret = -ENOENT;
9032                                 goto err;
9033                         }
9034                         /* update the local VSI info queue map */
9035                         i40e_vsi_update_queue_map(vsi, &ctxt);
9036                         vsi->info.valid_sections = 0;
9037                 } else {
9038                         /* Default/Main VSI is only enabled for TC0
9039                          * reconfigure it to enable all TCs that are
9040                          * available on the port in SFP mode.
9041                          * For MFP case the iSCSI PF would use this
9042                          * flow to enable LAN+iSCSI TC.
9043                          */
9044                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9045                         if (ret) {
9046                                 dev_info(&pf->pdev->dev,
9047                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9048                                          enabled_tc,
9049                                          i40e_stat_str(&pf->hw, ret),
9050                                          i40e_aq_str(&pf->hw,
9051                                                     pf->hw.aq.asq_last_status));
9052                                 ret = -ENOENT;
9053                         }
9054                 }
9055                 break;
9056
9057         case I40E_VSI_FDIR:
9058                 ctxt.pf_num = hw->pf_id;
9059                 ctxt.vf_num = 0;
9060                 ctxt.uplink_seid = vsi->uplink_seid;
9061                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9062                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9063                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9064                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9065                         ctxt.info.valid_sections |=
9066                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9067                         ctxt.info.switch_id =
9068                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9069                 }
9070                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9071                 break;
9072
9073         case I40E_VSI_VMDQ2:
9074                 ctxt.pf_num = hw->pf_id;
9075                 ctxt.vf_num = 0;
9076                 ctxt.uplink_seid = vsi->uplink_seid;
9077                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9078                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9079
9080                 /* This VSI is connected to VEB so the switch_id
9081                  * should be set to zero by default.
9082                  */
9083                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9084                         ctxt.info.valid_sections |=
9085                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9086                         ctxt.info.switch_id =
9087                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9088                 }
9089
9090                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9091                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9092                 break;
9093
9094         case I40E_VSI_SRIOV:
9095                 ctxt.pf_num = hw->pf_id;
9096                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9097                 ctxt.uplink_seid = vsi->uplink_seid;
9098                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9099                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9100
9101                 /* This VSI is connected to VEB so the switch_id
9102                  * should be set to zero by default.
9103                  */
9104                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9105                         ctxt.info.valid_sections |=
9106                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9107                         ctxt.info.switch_id =
9108                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9109                 }
9110
9111                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9112                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9113                 if (pf->vf[vsi->vf_id].spoofchk) {
9114                         ctxt.info.valid_sections |=
9115                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9116                         ctxt.info.sec_flags |=
9117                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9118                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9119                 }
9120                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9121                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9122                 break;
9123
9124 #ifdef I40E_FCOE
9125         case I40E_VSI_FCOE:
9126                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9127                 if (ret) {
9128                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9129                         return ret;
9130                 }
9131                 break;
9132
9133 #endif /* I40E_FCOE */
9134         default:
9135                 return -ENODEV;
9136         }
9137
9138         if (vsi->type != I40E_VSI_MAIN) {
9139                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9140                 if (ret) {
9141                         dev_info(&vsi->back->pdev->dev,
9142                                  "add vsi failed, err %s aq_err %s\n",
9143                                  i40e_stat_str(&pf->hw, ret),
9144                                  i40e_aq_str(&pf->hw,
9145                                              pf->hw.aq.asq_last_status));
9146                         ret = -ENOENT;
9147                         goto err;
9148                 }
9149                 vsi->info = ctxt.info;
9150                 vsi->info.valid_sections = 0;
9151                 vsi->seid = ctxt.seid;
9152                 vsi->id = ctxt.vsi_number;
9153         }
9154
9155         spin_lock_bh(&vsi->mac_filter_list_lock);
9156         /* If macvlan filters already exist, force them to get loaded */
9157         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9158                 f->changed = true;
9159                 f_count++;
9160
9161                 /* Expected to have only one MAC filter entry for LAA in list */
9162                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9163                         ether_addr_copy(laa_macaddr, f->macaddr);
9164                         found_laa_mac_filter = true;
9165                 }
9166         }
9167         spin_unlock_bh(&vsi->mac_filter_list_lock);
9168
9169         if (found_laa_mac_filter) {
9170                 struct i40e_aqc_remove_macvlan_element_data element;
9171
9172                 memset(&element, 0, sizeof(element));
9173                 ether_addr_copy(element.mac_addr, laa_macaddr);
9174                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9175                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9176                                              &element, 1, NULL);
9177                 if (ret) {
9178                         /* some older FW has a different default */
9179                         element.flags |=
9180                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9181                         i40e_aq_remove_macvlan(hw, vsi->seid,
9182                                                &element, 1, NULL);
9183                 }
9184
9185                 i40e_aq_mac_address_write(hw,
9186                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9187                                           laa_macaddr, NULL);
9188         }
9189
9190         if (f_count) {
9191                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9192                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9193         }
9194
9195         /* Update VSI BW information */
9196         ret = i40e_vsi_get_bw_info(vsi);
9197         if (ret) {
9198                 dev_info(&pf->pdev->dev,
9199                          "couldn't get vsi bw info, err %s aq_err %s\n",
9200                          i40e_stat_str(&pf->hw, ret),
9201                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9202                 /* VSI is already added so not tearing that up */
9203                 ret = 0;
9204         }
9205
9206 err:
9207         return ret;
9208 }
9209
9210 /**
9211  * i40e_vsi_release - Delete a VSI and free its resources
9212  * @vsi: the VSI being removed
9213  *
9214  * Returns 0 on success or < 0 on error
9215  **/
9216 int i40e_vsi_release(struct i40e_vsi *vsi)
9217 {
9218         struct i40e_mac_filter *f, *ftmp;
9219         struct i40e_veb *veb = NULL;
9220         struct i40e_pf *pf;
9221         u16 uplink_seid;
9222         int i, n;
9223
9224         pf = vsi->back;
9225
9226         /* release of a VEB-owner or last VSI is not allowed */
9227         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9228                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9229                          vsi->seid, vsi->uplink_seid);
9230                 return -ENODEV;
9231         }
9232         if (vsi == pf->vsi[pf->lan_vsi] &&
9233             !test_bit(__I40E_DOWN, &pf->state)) {
9234                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9235                 return -ENODEV;
9236         }
9237
9238         uplink_seid = vsi->uplink_seid;
9239         if (vsi->type != I40E_VSI_SRIOV) {
9240                 if (vsi->netdev_registered) {
9241                         vsi->netdev_registered = false;
9242                         if (vsi->netdev) {
9243                                 /* results in a call to i40e_close() */
9244                                 unregister_netdev(vsi->netdev);
9245                         }
9246                 } else {
9247                         i40e_vsi_close(vsi);
9248                 }
9249                 i40e_vsi_disable_irq(vsi);
9250         }
9251
9252         spin_lock_bh(&vsi->mac_filter_list_lock);
9253         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9254                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9255                                 f->is_vf, f->is_netdev);
9256         spin_unlock_bh(&vsi->mac_filter_list_lock);
9257
9258         i40e_sync_vsi_filters(vsi);
9259
9260         i40e_vsi_delete(vsi);
9261         i40e_vsi_free_q_vectors(vsi);
9262         if (vsi->netdev) {
9263                 free_netdev(vsi->netdev);
9264                 vsi->netdev = NULL;
9265         }
9266         i40e_vsi_clear_rings(vsi);
9267         i40e_vsi_clear(vsi);
9268
9269         /* If this was the last thing on the VEB, except for the
9270          * controlling VSI, remove the VEB, which puts the controlling
9271          * VSI onto the next level down in the switch.
9272          *
9273          * Well, okay, there's one more exception here: don't remove
9274          * the orphan VEBs yet.  We'll wait for an explicit remove request
9275          * from up the network stack.
9276          */
9277         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9278                 if (pf->vsi[i] &&
9279                     pf->vsi[i]->uplink_seid == uplink_seid &&
9280                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9281                         n++;      /* count the VSIs */
9282                 }
9283         }
9284         for (i = 0; i < I40E_MAX_VEB; i++) {
9285                 if (!pf->veb[i])
9286                         continue;
9287                 if (pf->veb[i]->uplink_seid == uplink_seid)
9288                         n++;     /* count the VEBs */
9289                 if (pf->veb[i]->seid == uplink_seid)
9290                         veb = pf->veb[i];
9291         }
9292         if (n == 0 && veb && veb->uplink_seid != 0)
9293                 i40e_veb_release(veb);
9294
9295         return 0;
9296 }
9297
9298 /**
9299  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9300  * @vsi: ptr to the VSI
9301  *
9302  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9303  * corresponding SW VSI structure and initializes num_queue_pairs for the
9304  * newly allocated VSI.
9305  *
9306  * Returns 0 on success or negative on failure
9307  **/
9308 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9309 {
9310         int ret = -ENOENT;
9311         struct i40e_pf *pf = vsi->back;
9312
9313         if (vsi->q_vectors[0]) {
9314                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9315                          vsi->seid);
9316                 return -EEXIST;
9317         }
9318
9319         if (vsi->base_vector) {
9320                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9321                          vsi->seid, vsi->base_vector);
9322                 return -EEXIST;
9323         }
9324
9325         ret = i40e_vsi_alloc_q_vectors(vsi);
9326         if (ret) {
9327                 dev_info(&pf->pdev->dev,
9328                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9329                          vsi->num_q_vectors, vsi->seid, ret);
9330                 vsi->num_q_vectors = 0;
9331                 goto vector_setup_out;
9332         }
9333
9334         /* In Legacy mode, we do not have to get any other vector since we
9335          * piggyback on the misc/ICR0 for queue interrupts.
9336         */
9337         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9338                 return ret;
9339         if (vsi->num_q_vectors)
9340                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9341                                                  vsi->num_q_vectors, vsi->idx);
9342         if (vsi->base_vector < 0) {
9343                 dev_info(&pf->pdev->dev,
9344                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9345                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9346                 i40e_vsi_free_q_vectors(vsi);
9347                 ret = -ENOENT;
9348                 goto vector_setup_out;
9349         }
9350
9351 vector_setup_out:
9352         return ret;
9353 }
9354
9355 /**
9356  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9357  * @vsi: pointer to the vsi.
9358  *
9359  * This re-allocates a vsi's queue resources.
9360  *
9361  * Returns pointer to the successfully allocated and configured VSI sw struct
9362  * on success, otherwise returns NULL on failure.
9363  **/
9364 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9365 {
9366         struct i40e_pf *pf = vsi->back;
9367         u8 enabled_tc;
9368         int ret;
9369
9370         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9371         i40e_vsi_clear_rings(vsi);
9372
9373         i40e_vsi_free_arrays(vsi, false);
9374         i40e_set_num_rings_in_vsi(vsi);
9375         ret = i40e_vsi_alloc_arrays(vsi, false);
9376         if (ret)
9377                 goto err_vsi;
9378
9379         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9380         if (ret < 0) {
9381                 dev_info(&pf->pdev->dev,
9382                          "failed to get tracking for %d queues for VSI %d err %d\n",
9383                          vsi->alloc_queue_pairs, vsi->seid, ret);
9384                 goto err_vsi;
9385         }
9386         vsi->base_queue = ret;
9387
9388         /* Update the FW view of the VSI. Force a reset of TC and queue
9389          * layout configurations.
9390          */
9391         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9392         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9393         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9394         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9395
9396         /* assign it some queues */
9397         ret = i40e_alloc_rings(vsi);
9398         if (ret)
9399                 goto err_rings;
9400
9401         /* map all of the rings to the q_vectors */
9402         i40e_vsi_map_rings_to_vectors(vsi);
9403         return vsi;
9404
9405 err_rings:
9406         i40e_vsi_free_q_vectors(vsi);
9407         if (vsi->netdev_registered) {
9408                 vsi->netdev_registered = false;
9409                 unregister_netdev(vsi->netdev);
9410                 free_netdev(vsi->netdev);
9411                 vsi->netdev = NULL;
9412         }
9413         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9414 err_vsi:
9415         i40e_vsi_clear(vsi);
9416         return NULL;
9417 }
9418
9419 /**
9420  * i40e_vsi_setup - Set up a VSI by a given type
9421  * @pf: board private structure
9422  * @type: VSI type
9423  * @uplink_seid: the switch element to link to
9424  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9425  *
9426  * This allocates the sw VSI structure and its queue resources, then add a VSI
9427  * to the identified VEB.
9428  *
9429  * Returns pointer to the successfully allocated and configure VSI sw struct on
9430  * success, otherwise returns NULL on failure.
9431  **/
9432 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9433                                 u16 uplink_seid, u32 param1)
9434 {
9435         struct i40e_vsi *vsi = NULL;
9436         struct i40e_veb *veb = NULL;
9437         int ret, i;
9438         int v_idx;
9439
9440         /* The requested uplink_seid must be either
9441          *     - the PF's port seid
9442          *              no VEB is needed because this is the PF
9443          *              or this is a Flow Director special case VSI
9444          *     - seid of an existing VEB
9445          *     - seid of a VSI that owns an existing VEB
9446          *     - seid of a VSI that doesn't own a VEB
9447          *              a new VEB is created and the VSI becomes the owner
9448          *     - seid of the PF VSI, which is what creates the first VEB
9449          *              this is a special case of the previous
9450          *
9451          * Find which uplink_seid we were given and create a new VEB if needed
9452          */
9453         for (i = 0; i < I40E_MAX_VEB; i++) {
9454                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9455                         veb = pf->veb[i];
9456                         break;
9457                 }
9458         }
9459
9460         if (!veb && uplink_seid != pf->mac_seid) {
9461
9462                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9463                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9464                                 vsi = pf->vsi[i];
9465                                 break;
9466                         }
9467                 }
9468                 if (!vsi) {
9469                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9470                                  uplink_seid);
9471                         return NULL;
9472                 }
9473
9474                 if (vsi->uplink_seid == pf->mac_seid)
9475                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9476                                              vsi->tc_config.enabled_tc);
9477                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9478                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9479                                              vsi->tc_config.enabled_tc);
9480                 if (veb) {
9481                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9482                                 dev_info(&vsi->back->pdev->dev,
9483                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9484                                 return NULL;
9485                         }
9486                         /* We come up by default in VEPA mode if SRIOV is not
9487                          * already enabled, in which case we can't force VEPA
9488                          * mode.
9489                          */
9490                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9491                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9492                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9493                         }
9494                         i40e_config_bridge_mode(veb);
9495                 }
9496                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9497                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9498                                 veb = pf->veb[i];
9499                 }
9500                 if (!veb) {
9501                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9502                         return NULL;
9503                 }
9504
9505                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9506                 uplink_seid = veb->seid;
9507         }
9508
9509         /* get vsi sw struct */
9510         v_idx = i40e_vsi_mem_alloc(pf, type);
9511         if (v_idx < 0)
9512                 goto err_alloc;
9513         vsi = pf->vsi[v_idx];
9514         if (!vsi)
9515                 goto err_alloc;
9516         vsi->type = type;
9517         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9518
9519         if (type == I40E_VSI_MAIN)
9520                 pf->lan_vsi = v_idx;
9521         else if (type == I40E_VSI_SRIOV)
9522                 vsi->vf_id = param1;
9523         /* assign it some queues */
9524         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9525                                 vsi->idx);
9526         if (ret < 0) {
9527                 dev_info(&pf->pdev->dev,
9528                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9529                          vsi->alloc_queue_pairs, vsi->seid, ret);
9530                 goto err_vsi;
9531         }
9532         vsi->base_queue = ret;
9533
9534         /* get a VSI from the hardware */
9535         vsi->uplink_seid = uplink_seid;
9536         ret = i40e_add_vsi(vsi);
9537         if (ret)
9538                 goto err_vsi;
9539
9540         switch (vsi->type) {
9541         /* setup the netdev if needed */
9542         case I40E_VSI_MAIN:
9543         case I40E_VSI_VMDQ2:
9544         case I40E_VSI_FCOE:
9545                 ret = i40e_config_netdev(vsi);
9546                 if (ret)
9547                         goto err_netdev;
9548                 ret = register_netdev(vsi->netdev);
9549                 if (ret)
9550                         goto err_netdev;
9551                 vsi->netdev_registered = true;
9552                 netif_carrier_off(vsi->netdev);
9553 #ifdef CONFIG_I40E_DCB
9554                 /* Setup DCB netlink interface */
9555                 i40e_dcbnl_setup(vsi);
9556 #endif /* CONFIG_I40E_DCB */
9557                 /* fall through */
9558
9559         case I40E_VSI_FDIR:
9560                 /* set up vectors and rings if needed */
9561                 ret = i40e_vsi_setup_vectors(vsi);
9562                 if (ret)
9563                         goto err_msix;
9564
9565                 ret = i40e_alloc_rings(vsi);
9566                 if (ret)
9567                         goto err_rings;
9568
9569                 /* map all of the rings to the q_vectors */
9570                 i40e_vsi_map_rings_to_vectors(vsi);
9571
9572                 i40e_vsi_reset_stats(vsi);
9573                 break;
9574
9575         default:
9576                 /* no netdev or rings for the other VSI types */
9577                 break;
9578         }
9579
9580         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9581             (vsi->type == I40E_VSI_VMDQ2)) {
9582                 ret = i40e_vsi_config_rss(vsi);
9583         }
9584         return vsi;
9585
9586 err_rings:
9587         i40e_vsi_free_q_vectors(vsi);
9588 err_msix:
9589         if (vsi->netdev_registered) {
9590                 vsi->netdev_registered = false;
9591                 unregister_netdev(vsi->netdev);
9592                 free_netdev(vsi->netdev);
9593                 vsi->netdev = NULL;
9594         }
9595 err_netdev:
9596         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9597 err_vsi:
9598         i40e_vsi_clear(vsi);
9599 err_alloc:
9600         return NULL;
9601 }
9602
9603 /**
9604  * i40e_veb_get_bw_info - Query VEB BW information
9605  * @veb: the veb to query
9606  *
9607  * Query the Tx scheduler BW configuration data for given VEB
9608  **/
9609 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9610 {
9611         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9612         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9613         struct i40e_pf *pf = veb->pf;
9614         struct i40e_hw *hw = &pf->hw;
9615         u32 tc_bw_max;
9616         int ret = 0;
9617         int i;
9618
9619         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9620                                                   &bw_data, NULL);
9621         if (ret) {
9622                 dev_info(&pf->pdev->dev,
9623                          "query veb bw config failed, err %s aq_err %s\n",
9624                          i40e_stat_str(&pf->hw, ret),
9625                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9626                 goto out;
9627         }
9628
9629         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9630                                                    &ets_data, NULL);
9631         if (ret) {
9632                 dev_info(&pf->pdev->dev,
9633                          "query veb bw ets config failed, err %s aq_err %s\n",
9634                          i40e_stat_str(&pf->hw, ret),
9635                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9636                 goto out;
9637         }
9638
9639         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9640         veb->bw_max_quanta = ets_data.tc_bw_max;
9641         veb->is_abs_credits = bw_data.absolute_credits_enable;
9642         veb->enabled_tc = ets_data.tc_valid_bits;
9643         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9644                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9645         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9646                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9647                 veb->bw_tc_limit_credits[i] =
9648                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9649                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9650         }
9651
9652 out:
9653         return ret;
9654 }
9655
9656 /**
9657  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9658  * @pf: board private structure
9659  *
9660  * On error: returns error code (negative)
9661  * On success: returns vsi index in PF (positive)
9662  **/
9663 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9664 {
9665         int ret = -ENOENT;
9666         struct i40e_veb *veb;
9667         int i;
9668
9669         /* Need to protect the allocation of switch elements at the PF level */
9670         mutex_lock(&pf->switch_mutex);
9671
9672         /* VEB list may be fragmented if VEB creation/destruction has
9673          * been happening.  We can afford to do a quick scan to look
9674          * for any free slots in the list.
9675          *
9676          * find next empty veb slot, looping back around if necessary
9677          */
9678         i = 0;
9679         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9680                 i++;
9681         if (i >= I40E_MAX_VEB) {
9682                 ret = -ENOMEM;
9683                 goto err_alloc_veb;  /* out of VEB slots! */
9684         }
9685
9686         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9687         if (!veb) {
9688                 ret = -ENOMEM;
9689                 goto err_alloc_veb;
9690         }
9691         veb->pf = pf;
9692         veb->idx = i;
9693         veb->enabled_tc = 1;
9694
9695         pf->veb[i] = veb;
9696         ret = i;
9697 err_alloc_veb:
9698         mutex_unlock(&pf->switch_mutex);
9699         return ret;
9700 }
9701
9702 /**
9703  * i40e_switch_branch_release - Delete a branch of the switch tree
9704  * @branch: where to start deleting
9705  *
9706  * This uses recursion to find the tips of the branch to be
9707  * removed, deleting until we get back to and can delete this VEB.
9708  **/
9709 static void i40e_switch_branch_release(struct i40e_veb *branch)
9710 {
9711         struct i40e_pf *pf = branch->pf;
9712         u16 branch_seid = branch->seid;
9713         u16 veb_idx = branch->idx;
9714         int i;
9715
9716         /* release any VEBs on this VEB - RECURSION */
9717         for (i = 0; i < I40E_MAX_VEB; i++) {
9718                 if (!pf->veb[i])
9719                         continue;
9720                 if (pf->veb[i]->uplink_seid == branch->seid)
9721                         i40e_switch_branch_release(pf->veb[i]);
9722         }
9723
9724         /* Release the VSIs on this VEB, but not the owner VSI.
9725          *
9726          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9727          *       the VEB itself, so don't use (*branch) after this loop.
9728          */
9729         for (i = 0; i < pf->num_alloc_vsi; i++) {
9730                 if (!pf->vsi[i])
9731                         continue;
9732                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9733                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9734                         i40e_vsi_release(pf->vsi[i]);
9735                 }
9736         }
9737
9738         /* There's one corner case where the VEB might not have been
9739          * removed, so double check it here and remove it if needed.
9740          * This case happens if the veb was created from the debugfs
9741          * commands and no VSIs were added to it.
9742          */
9743         if (pf->veb[veb_idx])
9744                 i40e_veb_release(pf->veb[veb_idx]);
9745 }
9746
9747 /**
9748  * i40e_veb_clear - remove veb struct
9749  * @veb: the veb to remove
9750  **/
9751 static void i40e_veb_clear(struct i40e_veb *veb)
9752 {
9753         if (!veb)
9754                 return;
9755
9756         if (veb->pf) {
9757                 struct i40e_pf *pf = veb->pf;
9758
9759                 mutex_lock(&pf->switch_mutex);
9760                 if (pf->veb[veb->idx] == veb)
9761                         pf->veb[veb->idx] = NULL;
9762                 mutex_unlock(&pf->switch_mutex);
9763         }
9764
9765         kfree(veb);
9766 }
9767
9768 /**
9769  * i40e_veb_release - Delete a VEB and free its resources
9770  * @veb: the VEB being removed
9771  **/
9772 void i40e_veb_release(struct i40e_veb *veb)
9773 {
9774         struct i40e_vsi *vsi = NULL;
9775         struct i40e_pf *pf;
9776         int i, n = 0;
9777
9778         pf = veb->pf;
9779
9780         /* find the remaining VSI and check for extras */
9781         for (i = 0; i < pf->num_alloc_vsi; i++) {
9782                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9783                         n++;
9784                         vsi = pf->vsi[i];
9785                 }
9786         }
9787         if (n != 1) {
9788                 dev_info(&pf->pdev->dev,
9789                          "can't remove VEB %d with %d VSIs left\n",
9790                          veb->seid, n);
9791                 return;
9792         }
9793
9794         /* move the remaining VSI to uplink veb */
9795         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9796         if (veb->uplink_seid) {
9797                 vsi->uplink_seid = veb->uplink_seid;
9798                 if (veb->uplink_seid == pf->mac_seid)
9799                         vsi->veb_idx = I40E_NO_VEB;
9800                 else
9801                         vsi->veb_idx = veb->veb_idx;
9802         } else {
9803                 /* floating VEB */
9804                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9805                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9806         }
9807
9808         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9809         i40e_veb_clear(veb);
9810 }
9811
9812 /**
9813  * i40e_add_veb - create the VEB in the switch
9814  * @veb: the VEB to be instantiated
9815  * @vsi: the controlling VSI
9816  **/
9817 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9818 {
9819         struct i40e_pf *pf = veb->pf;
9820         bool is_default = veb->pf->cur_promisc;
9821         bool is_cloud = false;
9822         int ret;
9823
9824         /* get a VEB from the hardware */
9825         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9826                               veb->enabled_tc, is_default,
9827                               is_cloud, &veb->seid, NULL);
9828         if (ret) {
9829                 dev_info(&pf->pdev->dev,
9830                          "couldn't add VEB, err %s aq_err %s\n",
9831                          i40e_stat_str(&pf->hw, ret),
9832                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9833                 return -EPERM;
9834         }
9835
9836         /* get statistics counter */
9837         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9838                                          &veb->stats_idx, NULL, NULL, NULL);
9839         if (ret) {
9840                 dev_info(&pf->pdev->dev,
9841                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9842                          i40e_stat_str(&pf->hw, ret),
9843                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9844                 return -EPERM;
9845         }
9846         ret = i40e_veb_get_bw_info(veb);
9847         if (ret) {
9848                 dev_info(&pf->pdev->dev,
9849                          "couldn't get VEB bw info, err %s aq_err %s\n",
9850                          i40e_stat_str(&pf->hw, ret),
9851                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9852                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9853                 return -ENOENT;
9854         }
9855
9856         vsi->uplink_seid = veb->seid;
9857         vsi->veb_idx = veb->idx;
9858         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9859
9860         return 0;
9861 }
9862
9863 /**
9864  * i40e_veb_setup - Set up a VEB
9865  * @pf: board private structure
9866  * @flags: VEB setup flags
9867  * @uplink_seid: the switch element to link to
9868  * @vsi_seid: the initial VSI seid
9869  * @enabled_tc: Enabled TC bit-map
9870  *
9871  * This allocates the sw VEB structure and links it into the switch
9872  * It is possible and legal for this to be a duplicate of an already
9873  * existing VEB.  It is also possible for both uplink and vsi seids
9874  * to be zero, in order to create a floating VEB.
9875  *
9876  * Returns pointer to the successfully allocated VEB sw struct on
9877  * success, otherwise returns NULL on failure.
9878  **/
9879 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9880                                 u16 uplink_seid, u16 vsi_seid,
9881                                 u8 enabled_tc)
9882 {
9883         struct i40e_veb *veb, *uplink_veb = NULL;
9884         int vsi_idx, veb_idx;
9885         int ret;
9886
9887         /* if one seid is 0, the other must be 0 to create a floating relay */
9888         if ((uplink_seid == 0 || vsi_seid == 0) &&
9889             (uplink_seid + vsi_seid != 0)) {
9890                 dev_info(&pf->pdev->dev,
9891                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9892                          uplink_seid, vsi_seid);
9893                 return NULL;
9894         }
9895
9896         /* make sure there is such a vsi and uplink */
9897         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9898                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9899                         break;
9900         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9901                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9902                          vsi_seid);
9903                 return NULL;
9904         }
9905
9906         if (uplink_seid && uplink_seid != pf->mac_seid) {
9907                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9908                         if (pf->veb[veb_idx] &&
9909                             pf->veb[veb_idx]->seid == uplink_seid) {
9910                                 uplink_veb = pf->veb[veb_idx];
9911                                 break;
9912                         }
9913                 }
9914                 if (!uplink_veb) {
9915                         dev_info(&pf->pdev->dev,
9916                                  "uplink seid %d not found\n", uplink_seid);
9917                         return NULL;
9918                 }
9919         }
9920
9921         /* get veb sw struct */
9922         veb_idx = i40e_veb_mem_alloc(pf);
9923         if (veb_idx < 0)
9924                 goto err_alloc;
9925         veb = pf->veb[veb_idx];
9926         veb->flags = flags;
9927         veb->uplink_seid = uplink_seid;
9928         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9929         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9930
9931         /* create the VEB in the switch */
9932         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9933         if (ret)
9934                 goto err_veb;
9935         if (vsi_idx == pf->lan_vsi)
9936                 pf->lan_veb = veb->idx;
9937
9938         return veb;
9939
9940 err_veb:
9941         i40e_veb_clear(veb);
9942 err_alloc:
9943         return NULL;
9944 }
9945
9946 /**
9947  * i40e_setup_pf_switch_element - set PF vars based on switch type
9948  * @pf: board private structure
9949  * @ele: element we are building info from
9950  * @num_reported: total number of elements
9951  * @printconfig: should we print the contents
9952  *
9953  * helper function to assist in extracting a few useful SEID values.
9954  **/
9955 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9956                                 struct i40e_aqc_switch_config_element_resp *ele,
9957                                 u16 num_reported, bool printconfig)
9958 {
9959         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9960         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9961         u8 element_type = ele->element_type;
9962         u16 seid = le16_to_cpu(ele->seid);
9963
9964         if (printconfig)
9965                 dev_info(&pf->pdev->dev,
9966                          "type=%d seid=%d uplink=%d downlink=%d\n",
9967                          element_type, seid, uplink_seid, downlink_seid);
9968
9969         switch (element_type) {
9970         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9971                 pf->mac_seid = seid;
9972                 break;
9973         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9974                 /* Main VEB? */
9975                 if (uplink_seid != pf->mac_seid)
9976                         break;
9977                 if (pf->lan_veb == I40E_NO_VEB) {
9978                         int v;
9979
9980                         /* find existing or else empty VEB */
9981                         for (v = 0; v < I40E_MAX_VEB; v++) {
9982                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9983                                         pf->lan_veb = v;
9984                                         break;
9985                                 }
9986                         }
9987                         if (pf->lan_veb == I40E_NO_VEB) {
9988                                 v = i40e_veb_mem_alloc(pf);
9989                                 if (v < 0)
9990                                         break;
9991                                 pf->lan_veb = v;
9992                         }
9993                 }
9994
9995                 pf->veb[pf->lan_veb]->seid = seid;
9996                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9997                 pf->veb[pf->lan_veb]->pf = pf;
9998                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9999                 break;
10000         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10001                 if (num_reported != 1)
10002                         break;
10003                 /* This is immediately after a reset so we can assume this is
10004                  * the PF's VSI
10005                  */
10006                 pf->mac_seid = uplink_seid;
10007                 pf->pf_seid = downlink_seid;
10008                 pf->main_vsi_seid = seid;
10009                 if (printconfig)
10010                         dev_info(&pf->pdev->dev,
10011                                  "pf_seid=%d main_vsi_seid=%d\n",
10012                                  pf->pf_seid, pf->main_vsi_seid);
10013                 break;
10014         case I40E_SWITCH_ELEMENT_TYPE_PF:
10015         case I40E_SWITCH_ELEMENT_TYPE_VF:
10016         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10017         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10018         case I40E_SWITCH_ELEMENT_TYPE_PE:
10019         case I40E_SWITCH_ELEMENT_TYPE_PA:
10020                 /* ignore these for now */
10021                 break;
10022         default:
10023                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10024                          element_type, seid);
10025                 break;
10026         }
10027 }
10028
10029 /**
10030  * i40e_fetch_switch_configuration - Get switch config from firmware
10031  * @pf: board private structure
10032  * @printconfig: should we print the contents
10033  *
10034  * Get the current switch configuration from the device and
10035  * extract a few useful SEID values.
10036  **/
10037 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10038 {
10039         struct i40e_aqc_get_switch_config_resp *sw_config;
10040         u16 next_seid = 0;
10041         int ret = 0;
10042         u8 *aq_buf;
10043         int i;
10044
10045         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10046         if (!aq_buf)
10047                 return -ENOMEM;
10048
10049         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10050         do {
10051                 u16 num_reported, num_total;
10052
10053                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10054                                                 I40E_AQ_LARGE_BUF,
10055                                                 &next_seid, NULL);
10056                 if (ret) {
10057                         dev_info(&pf->pdev->dev,
10058                                  "get switch config failed err %s aq_err %s\n",
10059                                  i40e_stat_str(&pf->hw, ret),
10060                                  i40e_aq_str(&pf->hw,
10061                                              pf->hw.aq.asq_last_status));
10062                         kfree(aq_buf);
10063                         return -ENOENT;
10064                 }
10065
10066                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10067                 num_total = le16_to_cpu(sw_config->header.num_total);
10068
10069                 if (printconfig)
10070                         dev_info(&pf->pdev->dev,
10071                                  "header: %d reported %d total\n",
10072                                  num_reported, num_total);
10073
10074                 for (i = 0; i < num_reported; i++) {
10075                         struct i40e_aqc_switch_config_element_resp *ele =
10076                                 &sw_config->element[i];
10077
10078                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10079                                                      printconfig);
10080                 }
10081         } while (next_seid != 0);
10082
10083         kfree(aq_buf);
10084         return ret;
10085 }
10086
10087 /**
10088  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10089  * @pf: board private structure
10090  * @reinit: if the Main VSI needs to re-initialized.
10091  *
10092  * Returns 0 on success, negative value on failure
10093  **/
10094 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10095 {
10096         int ret;
10097
10098         /* find out what's out there already */
10099         ret = i40e_fetch_switch_configuration(pf, false);
10100         if (ret) {
10101                 dev_info(&pf->pdev->dev,
10102                          "couldn't fetch switch config, err %s aq_err %s\n",
10103                          i40e_stat_str(&pf->hw, ret),
10104                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10105                 return ret;
10106         }
10107         i40e_pf_reset_stats(pf);
10108
10109         /* first time setup */
10110         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10111                 struct i40e_vsi *vsi = NULL;
10112                 u16 uplink_seid;
10113
10114                 /* Set up the PF VSI associated with the PF's main VSI
10115                  * that is already in the HW switch
10116                  */
10117                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10118                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10119                 else
10120                         uplink_seid = pf->mac_seid;
10121                 if (pf->lan_vsi == I40E_NO_VSI)
10122                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10123                 else if (reinit)
10124                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10125                 if (!vsi) {
10126                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10127                         i40e_fdir_teardown(pf);
10128                         return -EAGAIN;
10129                 }
10130         } else {
10131                 /* force a reset of TC and queue layout configurations */
10132                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10133
10134                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10135                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10136                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10137         }
10138         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10139
10140         i40e_fdir_sb_setup(pf);
10141
10142         /* Setup static PF queue filter control settings */
10143         ret = i40e_setup_pf_filter_control(pf);
10144         if (ret) {
10145                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10146                          ret);
10147                 /* Failure here should not stop continuing other steps */
10148         }
10149
10150         /* enable RSS in the HW, even for only one queue, as the stack can use
10151          * the hash
10152          */
10153         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10154                 i40e_pf_config_rss(pf);
10155
10156         /* fill in link information and enable LSE reporting */
10157         i40e_update_link_info(&pf->hw);
10158         i40e_link_event(pf);
10159
10160         /* Initialize user-specific link properties */
10161         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10162                                   I40E_AQ_AN_COMPLETED) ? true : false);
10163
10164         i40e_ptp_init(pf);
10165
10166         return ret;
10167 }
10168
10169 /**
10170  * i40e_determine_queue_usage - Work out queue distribution
10171  * @pf: board private structure
10172  **/
10173 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10174 {
10175         int queues_left;
10176
10177         pf->num_lan_qps = 0;
10178 #ifdef I40E_FCOE
10179         pf->num_fcoe_qps = 0;
10180 #endif
10181
10182         /* Find the max queues to be put into basic use.  We'll always be
10183          * using TC0, whether or not DCB is running, and TC0 will get the
10184          * big RSS set.
10185          */
10186         queues_left = pf->hw.func_caps.num_tx_qp;
10187
10188         if ((queues_left == 1) ||
10189             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10190                 /* one qp for PF, no queues for anything else */
10191                 queues_left = 0;
10192                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10193
10194                 /* make sure all the fancies are disabled */
10195                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10196 #ifdef I40E_FCOE
10197                                I40E_FLAG_FCOE_ENABLED   |
10198 #endif
10199                                I40E_FLAG_FD_SB_ENABLED  |
10200                                I40E_FLAG_FD_ATR_ENABLED |
10201                                I40E_FLAG_DCB_CAPABLE    |
10202                                I40E_FLAG_SRIOV_ENABLED  |
10203                                I40E_FLAG_VMDQ_ENABLED);
10204         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10205                                   I40E_FLAG_FD_SB_ENABLED |
10206                                   I40E_FLAG_FD_ATR_ENABLED |
10207                                   I40E_FLAG_DCB_CAPABLE))) {
10208                 /* one qp for PF */
10209                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10210                 queues_left -= pf->num_lan_qps;
10211
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_ENABLED    |
10219                                I40E_FLAG_VMDQ_ENABLED);
10220         } else {
10221                 /* Not enough queues for all TCs */
10222                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10223                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10224                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10225                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10226                 }
10227                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10228                                         num_online_cpus());
10229                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10230                                         pf->hw.func_caps.num_tx_qp);
10231
10232                 queues_left -= pf->num_lan_qps;
10233         }
10234
10235 #ifdef I40E_FCOE
10236         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10237                 if (I40E_DEFAULT_FCOE <= queues_left) {
10238                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10239                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10240                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10241                 } else {
10242                         pf->num_fcoe_qps = 0;
10243                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10244                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10245                 }
10246
10247                 queues_left -= pf->num_fcoe_qps;
10248         }
10249
10250 #endif
10251         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10252                 if (queues_left > 1) {
10253                         queues_left -= 1; /* save 1 queue for FD */
10254                 } else {
10255                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10256                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10257                 }
10258         }
10259
10260         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10261             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10262                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10263                                         (queues_left / pf->num_vf_qps));
10264                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10265         }
10266
10267         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10268             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10269                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10270                                           (queues_left / pf->num_vmdq_qps));
10271                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10272         }
10273
10274         pf->queues_left = queues_left;
10275         dev_dbg(&pf->pdev->dev,
10276                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10277                 pf->hw.func_caps.num_tx_qp,
10278                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10279                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10280                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10281                 queues_left);
10282 #ifdef I40E_FCOE
10283         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10284 #endif
10285 }
10286
10287 /**
10288  * i40e_setup_pf_filter_control - Setup PF static filter control
10289  * @pf: PF to be setup
10290  *
10291  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10292  * settings. If PE/FCoE are enabled then it will also set the per PF
10293  * based filter sizes required for them. It also enables Flow director,
10294  * ethertype and macvlan type filter settings for the pf.
10295  *
10296  * Returns 0 on success, negative on failure
10297  **/
10298 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10299 {
10300         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10301
10302         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10303
10304         /* Flow Director is enabled */
10305         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10306                 settings->enable_fdir = true;
10307
10308         /* Ethtype and MACVLAN filters enabled for PF */
10309         settings->enable_ethtype = true;
10310         settings->enable_macvlan = true;
10311
10312         if (i40e_set_filter_control(&pf->hw, settings))
10313                 return -ENOENT;
10314
10315         return 0;
10316 }
10317
10318 #define INFO_STRING_LEN 255
10319 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10320 static void i40e_print_features(struct i40e_pf *pf)
10321 {
10322         struct i40e_hw *hw = &pf->hw;
10323         char *buf;
10324         int i;
10325
10326         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10327         if (!buf)
10328                 return;
10329
10330         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10331 #ifdef CONFIG_PCI_IOV
10332         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10333 #endif
10334         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
10335                       pf->hw.func_caps.num_vsis,
10336                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10337                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10338
10339         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10340                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10341         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10342                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10343         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10344                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10345                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10346         }
10347         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10348                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10349 #if IS_ENABLED(CONFIG_VXLAN)
10350         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10351 #endif
10352         if (pf->flags & I40E_FLAG_PTP)
10353                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10354 #ifdef I40E_FCOE
10355         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10356                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10357 #endif
10358         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10359                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10360         else
10361                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10362
10363         dev_info(&pf->pdev->dev, "%s\n", buf);
10364         kfree(buf);
10365         WARN_ON(i > INFO_STRING_LEN);
10366 }
10367
10368 /**
10369  * i40e_probe - Device initialization routine
10370  * @pdev: PCI device information struct
10371  * @ent: entry in i40e_pci_tbl
10372  *
10373  * i40e_probe initializes a PF identified by a pci_dev structure.
10374  * The OS initialization, configuring of the PF private structure,
10375  * and a hardware reset occur.
10376  *
10377  * Returns 0 on success, negative on failure
10378  **/
10379 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10380 {
10381         struct i40e_aq_get_phy_abilities_resp abilities;
10382         struct i40e_pf *pf;
10383         struct i40e_hw *hw;
10384         static u16 pfs_found;
10385         u16 wol_nvm_bits;
10386         u16 link_status;
10387         int err;
10388         u32 len;
10389         u32 val;
10390         u32 i;
10391         u8 set_fc_aq_fail;
10392
10393         err = pci_enable_device_mem(pdev);
10394         if (err)
10395                 return err;
10396
10397         /* set up for high or low dma */
10398         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10399         if (err) {
10400                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10401                 if (err) {
10402                         dev_err(&pdev->dev,
10403                                 "DMA configuration failed: 0x%x\n", err);
10404                         goto err_dma;
10405                 }
10406         }
10407
10408         /* set up pci connections */
10409         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10410                                            IORESOURCE_MEM), i40e_driver_name);
10411         if (err) {
10412                 dev_info(&pdev->dev,
10413                          "pci_request_selected_regions failed %d\n", err);
10414                 goto err_pci_reg;
10415         }
10416
10417         pci_enable_pcie_error_reporting(pdev);
10418         pci_set_master(pdev);
10419
10420         /* Now that we have a PCI connection, we need to do the
10421          * low level device setup.  This is primarily setting up
10422          * the Admin Queue structures and then querying for the
10423          * device's current profile information.
10424          */
10425         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10426         if (!pf) {
10427                 err = -ENOMEM;
10428                 goto err_pf_alloc;
10429         }
10430         pf->next_vsi = 0;
10431         pf->pdev = pdev;
10432         set_bit(__I40E_DOWN, &pf->state);
10433
10434         hw = &pf->hw;
10435         hw->back = pf;
10436
10437         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10438                                 I40E_MAX_CSR_SPACE);
10439
10440         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10441         if (!hw->hw_addr) {
10442                 err = -EIO;
10443                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10444                          (unsigned int)pci_resource_start(pdev, 0),
10445                          pf->ioremap_len, err);
10446                 goto err_ioremap;
10447         }
10448         hw->vendor_id = pdev->vendor;
10449         hw->device_id = pdev->device;
10450         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10451         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10452         hw->subsystem_device_id = pdev->subsystem_device;
10453         hw->bus.device = PCI_SLOT(pdev->devfn);
10454         hw->bus.func = PCI_FUNC(pdev->devfn);
10455         pf->instance = pfs_found;
10456
10457         if (debug != -1) {
10458                 pf->msg_enable = pf->hw.debug_mask;
10459                 pf->msg_enable = debug;
10460         }
10461
10462         /* do a special CORER for clearing PXE mode once at init */
10463         if (hw->revision_id == 0 &&
10464             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10465                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10466                 i40e_flush(hw);
10467                 msleep(200);
10468                 pf->corer_count++;
10469
10470                 i40e_clear_pxe_mode(hw);
10471         }
10472
10473         /* Reset here to make sure all is clean and to define PF 'n' */
10474         i40e_clear_hw(hw);
10475         err = i40e_pf_reset(hw);
10476         if (err) {
10477                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10478                 goto err_pf_reset;
10479         }
10480         pf->pfr_count++;
10481
10482         hw->aq.num_arq_entries = I40E_AQ_LEN;
10483         hw->aq.num_asq_entries = I40E_AQ_LEN;
10484         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10485         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10486         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10487
10488         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10489                  "%s-%s:misc",
10490                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10491
10492         err = i40e_init_shared_code(hw);
10493         if (err) {
10494                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10495                          err);
10496                 goto err_pf_reset;
10497         }
10498
10499         /* set up a default setting for link flow control */
10500         pf->hw.fc.requested_mode = I40E_FC_NONE;
10501
10502         err = i40e_init_adminq(hw);
10503         if (err) {
10504                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10505                         dev_info(&pdev->dev,
10506                                  "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");
10507                 else
10508                         dev_info(&pdev->dev,
10509                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10510
10511                 goto err_pf_reset;
10512         }
10513
10514         /* provide nvm, fw, api versions */
10515         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10516                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10517                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10518                  i40e_nvm_version_str(hw));
10519
10520         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10521             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10522                 dev_info(&pdev->dev,
10523                          "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");
10524         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10525                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10526                 dev_info(&pdev->dev,
10527                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10528
10529         i40e_verify_eeprom(pf);
10530
10531         /* Rev 0 hardware was never productized */
10532         if (hw->revision_id < 1)
10533                 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");
10534
10535         i40e_clear_pxe_mode(hw);
10536         err = i40e_get_capabilities(pf);
10537         if (err)
10538                 goto err_adminq_setup;
10539
10540         err = i40e_sw_init(pf);
10541         if (err) {
10542                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10543                 goto err_sw_init;
10544         }
10545
10546         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10547                                 hw->func_caps.num_rx_qp,
10548                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10549         if (err) {
10550                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10551                 goto err_init_lan_hmc;
10552         }
10553
10554         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10555         if (err) {
10556                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10557                 err = -ENOENT;
10558                 goto err_configure_lan_hmc;
10559         }
10560
10561         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10562          * Ignore error return codes because if it was already disabled via
10563          * hardware settings this will fail
10564          */
10565         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10566             (pf->hw.aq.fw_maj_ver < 4)) {
10567                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10568                 i40e_aq_stop_lldp(hw, true, NULL);
10569         }
10570
10571         i40e_get_mac_addr(hw, hw->mac.addr);
10572         if (!is_valid_ether_addr(hw->mac.addr)) {
10573                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10574                 err = -EIO;
10575                 goto err_mac_addr;
10576         }
10577         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10578         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10579         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10580         if (is_valid_ether_addr(hw->mac.port_addr))
10581                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10582 #ifdef I40E_FCOE
10583         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10584         if (err)
10585                 dev_info(&pdev->dev,
10586                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10587         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10588                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10589                          hw->mac.san_addr);
10590                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10591         }
10592         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10593 #endif /* I40E_FCOE */
10594
10595         pci_set_drvdata(pdev, pf);
10596         pci_save_state(pdev);
10597 #ifdef CONFIG_I40E_DCB
10598         err = i40e_init_pf_dcb(pf);
10599         if (err) {
10600                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10601                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10602                 /* Continue without DCB enabled */
10603         }
10604 #endif /* CONFIG_I40E_DCB */
10605
10606         /* set up periodic task facility */
10607         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10608         pf->service_timer_period = HZ;
10609
10610         INIT_WORK(&pf->service_task, i40e_service_task);
10611         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10612         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10613
10614         /* NVM bit on means WoL disabled for the port */
10615         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10616         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10617                 pf->wol_en = false;
10618         else
10619                 pf->wol_en = true;
10620         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10621
10622         /* set up the main switch operations */
10623         i40e_determine_queue_usage(pf);
10624         err = i40e_init_interrupt_scheme(pf);
10625         if (err)
10626                 goto err_switch_setup;
10627
10628         /* The number of VSIs reported by the FW is the minimum guaranteed
10629          * to us; HW supports far more and we share the remaining pool with
10630          * the other PFs. We allocate space for more than the guarantee with
10631          * the understanding that we might not get them all later.
10632          */
10633         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10634                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10635         else
10636                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10637
10638         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10639         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10640         pf->vsi = kzalloc(len, GFP_KERNEL);
10641         if (!pf->vsi) {
10642                 err = -ENOMEM;
10643                 goto err_switch_setup;
10644         }
10645
10646 #ifdef CONFIG_PCI_IOV
10647         /* prep for VF support */
10648         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10649             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10650             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10651                 if (pci_num_vf(pdev))
10652                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10653         }
10654 #endif
10655         err = i40e_setup_pf_switch(pf, false);
10656         if (err) {
10657                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10658                 goto err_vsis;
10659         }
10660
10661         /* Make sure flow control is set according to current settings */
10662         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10663         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10664                 dev_dbg(&pf->pdev->dev,
10665                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10666                         i40e_stat_str(hw, err),
10667                         i40e_aq_str(hw, hw->aq.asq_last_status));
10668         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10669                 dev_dbg(&pf->pdev->dev,
10670                         "Set fc with err %s aq_err %s on set_phy_config\n",
10671                         i40e_stat_str(hw, err),
10672                         i40e_aq_str(hw, hw->aq.asq_last_status));
10673         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10674                 dev_dbg(&pf->pdev->dev,
10675                         "Set fc with err %s aq_err %s on get_link_info\n",
10676                         i40e_stat_str(hw, err),
10677                         i40e_aq_str(hw, hw->aq.asq_last_status));
10678
10679         /* if FDIR VSI was set up, start it now */
10680         for (i = 0; i < pf->num_alloc_vsi; i++) {
10681                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10682                         i40e_vsi_open(pf->vsi[i]);
10683                         break;
10684                 }
10685         }
10686
10687         /* driver is only interested in link up/down and module qualification
10688          * reports from firmware
10689          */
10690         err = i40e_aq_set_phy_int_mask(&pf->hw,
10691                                        I40E_AQ_EVENT_LINK_UPDOWN |
10692                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10693         if (err)
10694                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10695                          i40e_stat_str(&pf->hw, err),
10696                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10697
10698         /* Reconfigure hardware for allowing smaller MSS in the case
10699          * of TSO, so that we avoid the MDD being fired and causing
10700          * a reset in the case of small MSS+TSO.
10701          */
10702         val = rd32(hw, I40E_REG_MSS);
10703         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10704                 val &= ~I40E_REG_MSS_MIN_MASK;
10705                 val |= I40E_64BYTE_MSS;
10706                 wr32(hw, I40E_REG_MSS, val);
10707         }
10708
10709         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10710             (pf->hw.aq.fw_maj_ver < 4)) {
10711                 msleep(75);
10712                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10713                 if (err)
10714                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10715                                  i40e_stat_str(&pf->hw, err),
10716                                  i40e_aq_str(&pf->hw,
10717                                              pf->hw.aq.asq_last_status));
10718         }
10719         /* The main driver is (mostly) up and happy. We need to set this state
10720          * before setting up the misc vector or we get a race and the vector
10721          * ends up disabled forever.
10722          */
10723         clear_bit(__I40E_DOWN, &pf->state);
10724
10725         /* In case of MSIX we are going to setup the misc vector right here
10726          * to handle admin queue events etc. In case of legacy and MSI
10727          * the misc functionality and queue processing is combined in
10728          * the same vector and that gets setup at open.
10729          */
10730         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10731                 err = i40e_setup_misc_vector(pf);
10732                 if (err) {
10733                         dev_info(&pdev->dev,
10734                                  "setup of misc vector failed: %d\n", err);
10735                         goto err_vsis;
10736                 }
10737         }
10738
10739 #ifdef CONFIG_PCI_IOV
10740         /* prep for VF support */
10741         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10742             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10743             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10744                 u32 val;
10745
10746                 /* disable link interrupts for VFs */
10747                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10748                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10749                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10750                 i40e_flush(hw);
10751
10752                 if (pci_num_vf(pdev)) {
10753                         dev_info(&pdev->dev,
10754                                  "Active VFs found, allocating resources.\n");
10755                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10756                         if (err)
10757                                 dev_info(&pdev->dev,
10758                                          "Error %d allocating resources for existing VFs\n",
10759                                          err);
10760                 }
10761         }
10762 #endif /* CONFIG_PCI_IOV */
10763
10764         pfs_found++;
10765
10766         i40e_dbg_pf_init(pf);
10767
10768         /* tell the firmware that we're starting */
10769         i40e_send_version(pf);
10770
10771         /* since everything's happy, start the service_task timer */
10772         mod_timer(&pf->service_timer,
10773                   round_jiffies(jiffies + pf->service_timer_period));
10774
10775 #ifdef I40E_FCOE
10776         /* create FCoE interface */
10777         i40e_fcoe_vsi_setup(pf);
10778
10779 #endif
10780 #define PCI_SPEED_SIZE 8
10781 #define PCI_WIDTH_SIZE 8
10782         /* Devices on the IOSF bus do not have this information
10783          * and will report PCI Gen 1 x 1 by default so don't bother
10784          * checking them.
10785          */
10786         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10787                 char speed[PCI_SPEED_SIZE] = "Unknown";
10788                 char width[PCI_WIDTH_SIZE] = "Unknown";
10789
10790                 /* Get the negotiated link width and speed from PCI config
10791                  * space
10792                  */
10793                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10794                                           &link_status);
10795
10796                 i40e_set_pci_config_data(hw, link_status);
10797
10798                 switch (hw->bus.speed) {
10799                 case i40e_bus_speed_8000:
10800                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10801                 case i40e_bus_speed_5000:
10802                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10803                 case i40e_bus_speed_2500:
10804                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10805                 default:
10806                         break;
10807                 }
10808                 switch (hw->bus.width) {
10809                 case i40e_bus_width_pcie_x8:
10810                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10811                 case i40e_bus_width_pcie_x4:
10812                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10813                 case i40e_bus_width_pcie_x2:
10814                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10815                 case i40e_bus_width_pcie_x1:
10816                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10817                 default:
10818                         break;
10819                 }
10820
10821                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10822                          speed, width);
10823
10824                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10825                     hw->bus.speed < i40e_bus_speed_8000) {
10826                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10827                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10828                 }
10829         }
10830
10831         /* get the requested speeds from the fw */
10832         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10833         if (err)
10834                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10835                         i40e_stat_str(&pf->hw, err),
10836                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10837         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10838
10839         /* get the supported phy types from the fw */
10840         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10841         if (err)
10842                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10843                         i40e_stat_str(&pf->hw, err),
10844                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10845         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10846
10847         /* Add a filter to drop all Flow control frames from any VSI from being
10848          * transmitted. By doing so we stop a malicious VF from sending out
10849          * PAUSE or PFC frames and potentially controlling traffic for other
10850          * PF/VF VSIs.
10851          * The FW can still send Flow control frames if enabled.
10852          */
10853         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10854                                                        pf->main_vsi_seid);
10855
10856         /* print a string summarizing features */
10857         i40e_print_features(pf);
10858
10859         return 0;
10860
10861         /* Unwind what we've done if something failed in the setup */
10862 err_vsis:
10863         set_bit(__I40E_DOWN, &pf->state);
10864         i40e_clear_interrupt_scheme(pf);
10865         kfree(pf->vsi);
10866 err_switch_setup:
10867         i40e_reset_interrupt_capability(pf);
10868         del_timer_sync(&pf->service_timer);
10869 err_mac_addr:
10870 err_configure_lan_hmc:
10871         (void)i40e_shutdown_lan_hmc(hw);
10872 err_init_lan_hmc:
10873         kfree(pf->qp_pile);
10874 err_sw_init:
10875 err_adminq_setup:
10876         (void)i40e_shutdown_adminq(hw);
10877 err_pf_reset:
10878         iounmap(hw->hw_addr);
10879 err_ioremap:
10880         kfree(pf);
10881 err_pf_alloc:
10882         pci_disable_pcie_error_reporting(pdev);
10883         pci_release_selected_regions(pdev,
10884                                      pci_select_bars(pdev, IORESOURCE_MEM));
10885 err_pci_reg:
10886 err_dma:
10887         pci_disable_device(pdev);
10888         return err;
10889 }
10890
10891 /**
10892  * i40e_remove - Device removal routine
10893  * @pdev: PCI device information struct
10894  *
10895  * i40e_remove is called by the PCI subsystem to alert the driver
10896  * that is should release a PCI device.  This could be caused by a
10897  * Hot-Plug event, or because the driver is going to be removed from
10898  * memory.
10899  **/
10900 static void i40e_remove(struct pci_dev *pdev)
10901 {
10902         struct i40e_pf *pf = pci_get_drvdata(pdev);
10903         struct i40e_hw *hw = &pf->hw;
10904         i40e_status ret_code;
10905         int i;
10906
10907         i40e_dbg_pf_exit(pf);
10908
10909         i40e_ptp_stop(pf);
10910
10911         /* Disable RSS in hw */
10912         wr32(hw, I40E_PFQF_HENA(0), 0);
10913         wr32(hw, I40E_PFQF_HENA(1), 0);
10914
10915         /* no more scheduling of any task */
10916         set_bit(__I40E_DOWN, &pf->state);
10917         del_timer_sync(&pf->service_timer);
10918         cancel_work_sync(&pf->service_task);
10919         i40e_fdir_teardown(pf);
10920
10921         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10922                 i40e_free_vfs(pf);
10923                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10924         }
10925
10926         i40e_fdir_teardown(pf);
10927
10928         /* If there is a switch structure or any orphans, remove them.
10929          * This will leave only the PF's VSI remaining.
10930          */
10931         for (i = 0; i < I40E_MAX_VEB; i++) {
10932                 if (!pf->veb[i])
10933                         continue;
10934
10935                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10936                     pf->veb[i]->uplink_seid == 0)
10937                         i40e_switch_branch_release(pf->veb[i]);
10938         }
10939
10940         /* Now we can shutdown the PF's VSI, just before we kill
10941          * adminq and hmc.
10942          */
10943         if (pf->vsi[pf->lan_vsi])
10944                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10945
10946         /* shutdown and destroy the HMC */
10947         if (pf->hw.hmc.hmc_obj) {
10948                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10949                 if (ret_code)
10950                         dev_warn(&pdev->dev,
10951                                  "Failed to destroy the HMC resources: %d\n",
10952                                  ret_code);
10953         }
10954
10955         /* shutdown the adminq */
10956         ret_code = i40e_shutdown_adminq(&pf->hw);
10957         if (ret_code)
10958                 dev_warn(&pdev->dev,
10959                          "Failed to destroy the Admin Queue resources: %d\n",
10960                          ret_code);
10961
10962         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10963         i40e_clear_interrupt_scheme(pf);
10964         for (i = 0; i < pf->num_alloc_vsi; i++) {
10965                 if (pf->vsi[i]) {
10966                         i40e_vsi_clear_rings(pf->vsi[i]);
10967                         i40e_vsi_clear(pf->vsi[i]);
10968                         pf->vsi[i] = NULL;
10969                 }
10970         }
10971
10972         for (i = 0; i < I40E_MAX_VEB; i++) {
10973                 kfree(pf->veb[i]);
10974                 pf->veb[i] = NULL;
10975         }
10976
10977         kfree(pf->qp_pile);
10978         kfree(pf->vsi);
10979
10980         iounmap(pf->hw.hw_addr);
10981         kfree(pf);
10982         pci_release_selected_regions(pdev,
10983                                      pci_select_bars(pdev, IORESOURCE_MEM));
10984
10985         pci_disable_pcie_error_reporting(pdev);
10986         pci_disable_device(pdev);
10987 }
10988
10989 /**
10990  * i40e_pci_error_detected - warning that something funky happened in PCI land
10991  * @pdev: PCI device information struct
10992  *
10993  * Called to warn that something happened and the error handling steps
10994  * are in progress.  Allows the driver to quiesce things, be ready for
10995  * remediation.
10996  **/
10997 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10998                                                 enum pci_channel_state error)
10999 {
11000         struct i40e_pf *pf = pci_get_drvdata(pdev);
11001
11002         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11003
11004         /* shutdown all operations */
11005         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11006                 rtnl_lock();
11007                 i40e_prep_for_reset(pf);
11008                 rtnl_unlock();
11009         }
11010
11011         /* Request a slot reset */
11012         return PCI_ERS_RESULT_NEED_RESET;
11013 }
11014
11015 /**
11016  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11017  * @pdev: PCI device information struct
11018  *
11019  * Called to find if the driver can work with the device now that
11020  * the pci slot has been reset.  If a basic connection seems good
11021  * (registers are readable and have sane content) then return a
11022  * happy little PCI_ERS_RESULT_xxx.
11023  **/
11024 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11025 {
11026         struct i40e_pf *pf = pci_get_drvdata(pdev);
11027         pci_ers_result_t result;
11028         int err;
11029         u32 reg;
11030
11031         dev_dbg(&pdev->dev, "%s\n", __func__);
11032         if (pci_enable_device_mem(pdev)) {
11033                 dev_info(&pdev->dev,
11034                          "Cannot re-enable PCI device after reset.\n");
11035                 result = PCI_ERS_RESULT_DISCONNECT;
11036         } else {
11037                 pci_set_master(pdev);
11038                 pci_restore_state(pdev);
11039                 pci_save_state(pdev);
11040                 pci_wake_from_d3(pdev, false);
11041
11042                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11043                 if (reg == 0)
11044                         result = PCI_ERS_RESULT_RECOVERED;
11045                 else
11046                         result = PCI_ERS_RESULT_DISCONNECT;
11047         }
11048
11049         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11050         if (err) {
11051                 dev_info(&pdev->dev,
11052                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11053                          err);
11054                 /* non-fatal, continue */
11055         }
11056
11057         return result;
11058 }
11059
11060 /**
11061  * i40e_pci_error_resume - restart operations after PCI error recovery
11062  * @pdev: PCI device information struct
11063  *
11064  * Called to allow the driver to bring things back up after PCI error
11065  * and/or reset recovery has finished.
11066  **/
11067 static void i40e_pci_error_resume(struct pci_dev *pdev)
11068 {
11069         struct i40e_pf *pf = pci_get_drvdata(pdev);
11070
11071         dev_dbg(&pdev->dev, "%s\n", __func__);
11072         if (test_bit(__I40E_SUSPENDED, &pf->state))
11073                 return;
11074
11075         rtnl_lock();
11076         i40e_handle_reset_warning(pf);
11077         rtnl_unlock();
11078 }
11079
11080 /**
11081  * i40e_shutdown - PCI callback for shutting down
11082  * @pdev: PCI device information struct
11083  **/
11084 static void i40e_shutdown(struct pci_dev *pdev)
11085 {
11086         struct i40e_pf *pf = pci_get_drvdata(pdev);
11087         struct i40e_hw *hw = &pf->hw;
11088
11089         set_bit(__I40E_SUSPENDED, &pf->state);
11090         set_bit(__I40E_DOWN, &pf->state);
11091         rtnl_lock();
11092         i40e_prep_for_reset(pf);
11093         rtnl_unlock();
11094
11095         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11096         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11097
11098         del_timer_sync(&pf->service_timer);
11099         cancel_work_sync(&pf->service_task);
11100         i40e_fdir_teardown(pf);
11101
11102         rtnl_lock();
11103         i40e_prep_for_reset(pf);
11104         rtnl_unlock();
11105
11106         wr32(hw, I40E_PFPM_APM,
11107              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11108         wr32(hw, I40E_PFPM_WUFC,
11109              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11110
11111         i40e_clear_interrupt_scheme(pf);
11112
11113         if (system_state == SYSTEM_POWER_OFF) {
11114                 pci_wake_from_d3(pdev, pf->wol_en);
11115                 pci_set_power_state(pdev, PCI_D3hot);
11116         }
11117 }
11118
11119 #ifdef CONFIG_PM
11120 /**
11121  * i40e_suspend - PCI callback for moving to D3
11122  * @pdev: PCI device information struct
11123  **/
11124 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11125 {
11126         struct i40e_pf *pf = pci_get_drvdata(pdev);
11127         struct i40e_hw *hw = &pf->hw;
11128
11129         set_bit(__I40E_SUSPENDED, &pf->state);
11130         set_bit(__I40E_DOWN, &pf->state);
11131
11132         rtnl_lock();
11133         i40e_prep_for_reset(pf);
11134         rtnl_unlock();
11135
11136         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11137         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11138
11139         pci_wake_from_d3(pdev, pf->wol_en);
11140         pci_set_power_state(pdev, PCI_D3hot);
11141
11142         return 0;
11143 }
11144
11145 /**
11146  * i40e_resume - PCI callback for waking up from D3
11147  * @pdev: PCI device information struct
11148  **/
11149 static int i40e_resume(struct pci_dev *pdev)
11150 {
11151         struct i40e_pf *pf = pci_get_drvdata(pdev);
11152         u32 err;
11153
11154         pci_set_power_state(pdev, PCI_D0);
11155         pci_restore_state(pdev);
11156         /* pci_restore_state() clears dev->state_saves, so
11157          * call pci_save_state() again to restore it.
11158          */
11159         pci_save_state(pdev);
11160
11161         err = pci_enable_device_mem(pdev);
11162         if (err) {
11163                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11164                 return err;
11165         }
11166         pci_set_master(pdev);
11167
11168         /* no wakeup events while running */
11169         pci_wake_from_d3(pdev, false);
11170
11171         /* handling the reset will rebuild the device state */
11172         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11173                 clear_bit(__I40E_DOWN, &pf->state);
11174                 rtnl_lock();
11175                 i40e_reset_and_rebuild(pf, false);
11176                 rtnl_unlock();
11177         }
11178
11179         return 0;
11180 }
11181
11182 #endif
11183 static const struct pci_error_handlers i40e_err_handler = {
11184         .error_detected = i40e_pci_error_detected,
11185         .slot_reset = i40e_pci_error_slot_reset,
11186         .resume = i40e_pci_error_resume,
11187 };
11188
11189 static struct pci_driver i40e_driver = {
11190         .name     = i40e_driver_name,
11191         .id_table = i40e_pci_tbl,
11192         .probe    = i40e_probe,
11193         .remove   = i40e_remove,
11194 #ifdef CONFIG_PM
11195         .suspend  = i40e_suspend,
11196         .resume   = i40e_resume,
11197 #endif
11198         .shutdown = i40e_shutdown,
11199         .err_handler = &i40e_err_handler,
11200         .sriov_configure = i40e_pci_sriov_configure,
11201 };
11202
11203 /**
11204  * i40e_init_module - Driver registration routine
11205  *
11206  * i40e_init_module is the first routine called when the driver is
11207  * loaded. All it does is register with the PCI subsystem.
11208  **/
11209 static int __init i40e_init_module(void)
11210 {
11211         pr_info("%s: %s - version %s\n", i40e_driver_name,
11212                 i40e_driver_string, i40e_driver_version_str);
11213         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11214
11215         i40e_dbg_init();
11216         return pci_register_driver(&i40e_driver);
11217 }
11218 module_init(i40e_init_module);
11219
11220 /**
11221  * i40e_exit_module - Driver exit cleanup routine
11222  *
11223  * i40e_exit_module is called just before the driver is removed
11224  * from memory.
11225  **/
11226 static void __exit i40e_exit_module(void)
11227 {
11228         pci_unregister_driver(&i40e_driver);
11229         i40e_dbg_exit();
11230 }
11231 module_exit(i40e_exit_module);