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 2
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  59                               u16 rss_table_size, u16 rss_size);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  87         /* required last entry */
  88         {0, }
  89 };
  90 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  91
  92 #define I40E_MAX_VF_COUNT 128
  93 static int debug = -1;
  94 module_param(debug, int, 0);
  95 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  96
  97 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  98 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  99 MODULE_LICENSE("GPL");
 100 MODULE_VERSION(DRV_VERSION);
 101
 102 /**
 103  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 104  * @hw:   pointer to the HW structure
 105  * @mem:  ptr to mem struct to fill out
 106  * @size: size of memory requested
 107  * @alignment: what to align the allocation to
 108  **/
 109 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 110                             u64 size, u32 alignment)
 111 {
 112         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 113
 114         mem->size = ALIGN(size, alignment);
 115         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 116                                       &mem->pa, GFP_KERNEL);
 117         if (!mem->va)
 118                 return -ENOMEM;
 119
 120         return 0;
 121 }
 122
 123 /**
 124  * i40e_free_dma_mem_d - OS specific memory free for shared code
 125  * @hw:   pointer to the HW structure
 126  * @mem:  ptr to mem struct to free
 127  **/
 128 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 129 {
 130         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 131
 132         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 133         mem->va = NULL;
 134         mem->pa = 0;
 135         mem->size = 0;
 136
 137         return 0;
 138 }
 139
 140 /**
 141  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 142  * @hw:   pointer to the HW structure
 143  * @mem:  ptr to mem struct to fill out
 144  * @size: size of memory requested
 145  **/
 146 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 147                              u32 size)
 148 {
 149         mem->size = size;
 150         mem->va = kzalloc(size, GFP_KERNEL);
 151
 152         if (!mem->va)
 153                 return -ENOMEM;
 154
 155         return 0;
 156 }
 157
 158 /**
 159  * i40e_free_virt_mem_d - OS specific memory free for shared code
 160  * @hw:   pointer to the HW structure
 161  * @mem:  ptr to mem struct to free
 162  **/
 163 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 164 {
 165         /* it's ok to kfree a NULL pointer */
 166         kfree(mem->va);
 167         mem->va = NULL;
 168         mem->size = 0;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * i40e_get_lump - find a lump of free generic resource
 175  * @pf: board private structure
 176  * @pile: the pile of resource to search
 177  * @needed: the number of items needed
 178  * @id: an owner id to stick on the items assigned
 179  *
 180  * Returns the base item index of the lump, or negative for error
 181  *
 182  * The search_hint trick and lack of advanced fit-finding only work
 183  * because we're highly likely to have all the same size lump requests.
 184  * Linear search time and any fragmentation should be minimal.
 185  **/
 186 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 187                          u16 needed, u16 id)
 188 {
 189         int ret = -ENOMEM;
 190         int i, j;
 191
 192         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 193                 dev_info(&pf->pdev->dev,
 194                          "param err: pile=%p needed=%d id=0x%04x\n",
 195                          pile, needed, id);
 196                 return -EINVAL;
 197         }
 198
 199         /* start the linear search with an imperfect hint */
 200         i = pile->search_hint;
 201         while (i < pile->num_entries) {
 202                 /* skip already allocated entries */
 203                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 204                         i++;
 205                         continue;
 206                 }
 207
 208                 /* do we have enough in this lump? */
 209                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 210                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 211                                 break;
 212                 }
 213
 214                 if (j == needed) {
 215                         /* there was enough, so assign it to the requestor */
 216                         for (j = 0; j < needed; j++)
 217                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 218                         ret = i;
 219                         pile->search_hint = i + j;
 220                         break;
 221                 }
 222
 223                 /* not enough, so skip over it and continue looking */
 224                 i += j;
 225         }
 226
 227         return ret;
 228 }
 229
 230 /**
 231  * i40e_put_lump - return a lump of generic resource
 232  * @pile: the pile of resource to search
 233  * @index: the base item index
 234  * @id: the owner id of the items assigned
 235  *
 236  * Returns the count of items in the lump
 237  **/
 238 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 239 {
 240         int valid_id = (id | I40E_PILE_VALID_BIT);
 241         int count = 0;
 242         int i;
 243
 244         if (!pile || index >= pile->num_entries)
 245                 return -EINVAL;
 246
 247         for (i = index;
 248              i < pile->num_entries && pile->list[i] == valid_id;
 249              i++) {
 250                 pile->list[i] = 0;
 251                 count++;
 252         }
 253
 254         if (count && index < pile->search_hint)
 255                 pile->search_hint = index;
 256
 257         return count;
 258 }
 259
 260 /**
 261  * i40e_find_vsi_from_id - searches for the vsi with the given id
 262  * @pf - the pf structure to search for the vsi
 263  * @id - id of the vsi it is searching for
 264  **/
 265 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 266 {
 267         int i;
 268
 269         for (i = 0; i < pf->num_alloc_vsi; i++)
 270                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 271                         return pf->vsi[i];
 272
 273         return NULL;
 274 }
 275
 276 /**
 277  * i40e_service_event_schedule - Schedule the service task to wake up
 278  * @pf: board private structure
 279  *
 280  * If not already scheduled, this puts the task into the work queue
 281  **/
 282 static void i40e_service_event_schedule(struct i40e_pf *pf)
 283 {
 284         if (!test_bit(__I40E_DOWN, &pf->state) &&
 285             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 286             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 287                 schedule_work(&pf->service_task);
 288 }
 289
 290 /**
 291  * i40e_tx_timeout - Respond to a Tx Hang
 292  * @netdev: network interface device structure
 293  *
 294  * If any port has noticed a Tx timeout, it is likely that the whole
 295  * device is munged, not just the one netdev port, so go for the full
 296  * reset.
 297  **/
 298 #ifdef I40E_FCOE
 299 void i40e_tx_timeout(struct net_device *netdev)
 300 #else
 301 static void i40e_tx_timeout(struct net_device *netdev)
 302 #endif
 303 {
 304         struct i40e_netdev_priv *np = netdev_priv(netdev);
 305         struct i40e_vsi *vsi = np->vsi;
 306         struct i40e_pf *pf = vsi->back;
 307         struct i40e_ring *tx_ring = NULL;
 308         unsigned int i, hung_queue = 0;
 309         u32 head, val;
 310
 311         pf->tx_timeout_count++;
 312
 313         /* find the stopped queue the same way the stack does */
 314         for (i = 0; i < netdev->num_tx_queues; i++) {
 315                 struct netdev_queue *q;
 316                 unsigned long trans_start;
 317
 318                 q = netdev_get_tx_queue(netdev, i);
 319                 trans_start = q->trans_start ? : netdev->trans_start;
 320                 if (netif_xmit_stopped(q) &&
 321                     time_after(jiffies,
 322                                (trans_start + netdev->watchdog_timeo))) {
 323                         hung_queue = i;
 324                         break;
 325                 }
 326         }
 327
 328         if (i == netdev->num_tx_queues) {
 329                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 330         } else {
 331                 /* now that we have an index, find the tx_ring struct */
 332                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 333                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 334                                 if (hung_queue ==
 335                                     vsi->tx_rings[i]->queue_index) {
 336                                         tx_ring = vsi->tx_rings[i];
 337                                         break;
 338                                 }
 339                         }
 340                 }
 341         }
 342
 343         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 344                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 345         else if (time_before(jiffies,
 346                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 347                 return;   /* don't do any new action before the next timeout */
 348
 349         if (tx_ring) {
 350                 head = i40e_get_head(tx_ring);
 351                 /* Read interrupt register */
 352                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 353                         val = rd32(&pf->hw,
 354                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 355                                                 tx_ring->vsi->base_vector - 1));
 356                 else
 357                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 358
 359                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 360                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 361                             head, tx_ring->next_to_use,
 362                             readl(tx_ring->tail), val);
 363         }
 364
 365         pf->tx_timeout_last_recovery = jiffies;
 366         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 367                     pf->tx_timeout_recovery_level, hung_queue);
 368
 369         switch (pf->tx_timeout_recovery_level) {
 370         case 1:
 371                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 372                 break;
 373         case 2:
 374                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 375                 break;
 376         case 3:
 377                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 378                 break;
 379         default:
 380                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 381                 break;
 382         }
 383
 384         i40e_service_event_schedule(pf);
 385         pf->tx_timeout_recovery_level++;
 386 }
 387
 388 /**
 389  * i40e_release_rx_desc - Store the new tail and head values
 390  * @rx_ring: ring to bump
 391  * @val: new head index
 392  **/
 393 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 394 {
 395         rx_ring->next_to_use = val;
 396
 397         /* Force memory writes to complete before letting h/w
 398          * know there are new descriptors to fetch.  (Only
 399          * applicable for weak-ordered memory model archs,
 400          * such as IA-64).
 401          */
 402         wmb();
 403         writel(val, rx_ring->tail);
 404 }
 405
 406 /**
 407  * i40e_get_vsi_stats_struct - Get System Network Statistics
 408  * @vsi: the VSI we care about
 409  *
 410  * Returns the address of the device statistics structure.
 411  * The statistics are actually updated from the service task.
 412  **/
 413 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 414 {
 415         return &vsi->net_stats;
 416 }
 417
 418 /**
 419  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 420  * @netdev: network interface device structure
 421  *
 422  * Returns the address of the device statistics structure.
 423  * The statistics are actually updated from the service task.
 424  **/
 425 #ifdef I40E_FCOE
 426 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 427                                              struct net_device *netdev,
 428                                              struct rtnl_link_stats64 *stats)
 429 #else
 430 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 431                                              struct net_device *netdev,
 432                                              struct rtnl_link_stats64 *stats)
 433 #endif
 434 {
 435         struct i40e_netdev_priv *np = netdev_priv(netdev);
 436         struct i40e_ring *tx_ring, *rx_ring;
 437         struct i40e_vsi *vsi = np->vsi;
 438         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 439         int i;
 440
 441         if (test_bit(__I40E_DOWN, &vsi->state))
 442                 return stats;
 443
 444         if (!vsi->tx_rings)
 445                 return stats;
 446
 447         rcu_read_lock();
 448         for (i = 0; i < vsi->num_queue_pairs; i++) {
 449                 u64 bytes, packets;
 450                 unsigned int start;
 451
 452                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 453                 if (!tx_ring)
 454                         continue;
 455
 456                 do {
 457                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 458                         packets = tx_ring->stats.packets;
 459                         bytes   = tx_ring->stats.bytes;
 460                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 461
 462                 stats->tx_packets += packets;
 463                 stats->tx_bytes   += bytes;
 464                 rx_ring = &tx_ring[1];
 465
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 468                         packets = rx_ring->stats.packets;
 469                         bytes   = rx_ring->stats.bytes;
 470                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 471
 472                 stats->rx_packets += packets;
 473                 stats->rx_bytes   += bytes;
 474         }
 475         rcu_read_unlock();
 476
 477         /* following stats updated by i40e_watchdog_subtask() */
 478         stats->multicast        = vsi_stats->multicast;
 479         stats->tx_errors        = vsi_stats->tx_errors;
 480         stats->tx_dropped       = vsi_stats->tx_dropped;
 481         stats->rx_errors        = vsi_stats->rx_errors;
 482         stats->rx_dropped       = vsi_stats->rx_dropped;
 483         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 484         stats->rx_length_errors = vsi_stats->rx_length_errors;
 485
 486         return stats;
 487 }
 488
 489 /**
 490  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 491  * @vsi: the VSI to have its stats reset
 492  **/
 493 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 494 {
 495         struct rtnl_link_stats64 *ns;
 496         int i;
 497
 498         if (!vsi)
 499                 return;
 500
 501         ns = i40e_get_vsi_stats_struct(vsi);
 502         memset(ns, 0, sizeof(*ns));
 503         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 504         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 505         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 506         if (vsi->rx_rings && vsi->rx_rings[0]) {
 507                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 508                         memset(&vsi->rx_rings[i]->stats, 0,
 509                                sizeof(vsi->rx_rings[i]->stats));
 510                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 511                                sizeof(vsi->rx_rings[i]->rx_stats));
 512                         memset(&vsi->tx_rings[i]->stats, 0,
 513                                sizeof(vsi->tx_rings[i]->stats));
 514                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 515                                sizeof(vsi->tx_rings[i]->tx_stats));
 516                 }
 517         }
 518         vsi->stat_offsets_loaded = false;
 519 }
 520
 521 /**
 522  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 523  * @pf: the PF to be reset
 524  **/
 525 void i40e_pf_reset_stats(struct i40e_pf *pf)
 526 {
 527         int i;
 528
 529         memset(&pf->stats, 0, sizeof(pf->stats));
 530         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 531         pf->stat_offsets_loaded = false;
 532
 533         for (i = 0; i < I40E_MAX_VEB; i++) {
 534                 if (pf->veb[i]) {
 535                         memset(&pf->veb[i]->stats, 0,
 536                                sizeof(pf->veb[i]->stats));
 537                         memset(&pf->veb[i]->stats_offsets, 0,
 538                                sizeof(pf->veb[i]->stats_offsets));
 539                         pf->veb[i]->stat_offsets_loaded = false;
 540                 }
 541         }
 542 }
 543
 544 /**
 545  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 546  * @hw: ptr to the hardware info
 547  * @hireg: the high 32 bit reg to read
 548  * @loreg: the low 32 bit reg to read
 549  * @offset_loaded: has the initial offset been loaded yet
 550  * @offset: ptr to current offset value
 551  * @stat: ptr to the stat
 552  *
 553  * Since the device stats are not reset at PFReset, they likely will not
 554  * be zeroed when the driver starts.  We'll save the first values read
 555  * and use them as offsets to be subtracted from the raw values in order
 556  * to report stats that count from zero.  In the process, we also manage
 557  * the potential roll-over.
 558  **/
 559 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 560                                bool offset_loaded, u64 *offset, u64 *stat)
 561 {
 562         u64 new_data;
 563
 564         if (hw->device_id == I40E_DEV_ID_QEMU) {
 565                 new_data = rd32(hw, loreg);
 566                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 567         } else {
 568                 new_data = rd64(hw, loreg);
 569         }
 570         if (!offset_loaded)
 571                 *offset = new_data;
 572         if (likely(new_data >= *offset))
 573                 *stat = new_data - *offset;
 574         else
 575                 *stat = (new_data + BIT_ULL(48)) - *offset;
 576         *stat &= 0xFFFFFFFFFFFFULL;
 577 }
 578
 579 /**
 580  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 581  * @hw: ptr to the hardware info
 582  * @reg: the hw reg to read
 583  * @offset_loaded: has the initial offset been loaded yet
 584  * @offset: ptr to current offset value
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 588                                bool offset_loaded, u64 *offset, u64 *stat)
 589 {
 590         u32 new_data;
 591
 592         new_data = rd32(hw, reg);
 593         if (!offset_loaded)
 594                 *offset = new_data;
 595         if (likely(new_data >= *offset))
 596                 *stat = (u32)(new_data - *offset);
 597         else
 598                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 599 }
 600
 601 /**
 602  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 603  * @vsi: the VSI to be updated
 604  **/
 605 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 606 {
 607         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 608         struct i40e_pf *pf = vsi->back;
 609         struct i40e_hw *hw = &pf->hw;
 610         struct i40e_eth_stats *oes;
 611         struct i40e_eth_stats *es;     /* device's eth stats */
 612
 613         es = &vsi->eth_stats;
 614         oes = &vsi->eth_stats_offsets;
 615
 616         /* Gather up the stats that the hw collects */
 617         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->tx_errors, &es->tx_errors);
 620         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_discards, &es->rx_discards);
 623         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 626         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->tx_errors, &es->tx_errors);
 629
 630         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 631                            I40E_GLV_GORCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_bytes, &es->rx_bytes);
 634         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 635                            I40E_GLV_UPRCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->rx_unicast, &es->rx_unicast);
 638         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 639                            I40E_GLV_MPRCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->rx_multicast, &es->rx_multicast);
 642         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 643                            I40E_GLV_BPRCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->rx_broadcast, &es->rx_broadcast);
 646
 647         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 648                            I40E_GLV_GOTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_bytes, &es->tx_bytes);
 651         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 652                            I40E_GLV_UPTCL(stat_idx),
 653                            vsi->stat_offsets_loaded,
 654                            &oes->tx_unicast, &es->tx_unicast);
 655         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 656                            I40E_GLV_MPTCL(stat_idx),
 657                            vsi->stat_offsets_loaded,
 658                            &oes->tx_multicast, &es->tx_multicast);
 659         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 660                            I40E_GLV_BPTCL(stat_idx),
 661                            vsi->stat_offsets_loaded,
 662                            &oes->tx_broadcast, &es->tx_broadcast);
 663         vsi->stat_offsets_loaded = true;
 664 }
 665
 666 /**
 667  * i40e_update_veb_stats - Update Switch component statistics
 668  * @veb: the VEB being updated
 669  **/
 670 static void i40e_update_veb_stats(struct i40e_veb *veb)
 671 {
 672         struct i40e_pf *pf = veb->pf;
 673         struct i40e_hw *hw = &pf->hw;
 674         struct i40e_eth_stats *oes;
 675         struct i40e_eth_stats *es;     /* device's eth stats */
 676         struct i40e_veb_tc_stats *veb_oes;
 677         struct i40e_veb_tc_stats *veb_es;
 678         int i, idx = 0;
 679
 680         idx = veb->stats_idx;
 681         es = &veb->stats;
 682         oes = &veb->stats_offsets;
 683         veb_es = &veb->tc_stats;
 684         veb_oes = &veb->tc_stats_offsets;
 685
 686         /* Gather up the stats that the hw collects */
 687         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->tx_discards, &es->tx_discards);
 690         if (hw->revision_id > 0)
 691                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 692                                    veb->stat_offsets_loaded,
 693                                    &oes->rx_unknown_protocol,
 694                                    &es->rx_unknown_protocol);
 695         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_bytes, &es->rx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_unicast, &es->rx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->rx_multicast, &es->rx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->rx_broadcast, &es->rx_broadcast);
 707
 708         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_bytes, &es->tx_bytes);
 711         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_unicast, &es->tx_unicast);
 714         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->tx_multicast, &es->tx_multicast);
 717         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 718                            veb->stat_offsets_loaded,
 719                            &oes->tx_broadcast, &es->tx_broadcast);
 720         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 721                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 722                                    I40E_GLVEBTC_RPCL(i, idx),
 723                                    veb->stat_offsets_loaded,
 724                                    &veb_oes->tc_rx_packets[i],
 725                                    &veb_es->tc_rx_packets[i]);
 726                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 727                                    I40E_GLVEBTC_RBCL(i, idx),
 728                                    veb->stat_offsets_loaded,
 729                                    &veb_oes->tc_rx_bytes[i],
 730                                    &veb_es->tc_rx_bytes[i]);
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 732                                    I40E_GLVEBTC_TPCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_tx_packets[i],
 735                                    &veb_es->tc_tx_packets[i]);
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 737                                    I40E_GLVEBTC_TBCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_tx_bytes[i],
 740                                    &veb_es->tc_tx_bytes[i]);
 741         }
 742         veb->stat_offsets_loaded = true;
 743 }
 744
 745 #ifdef I40E_FCOE
 746 /**
 747  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 748  * @vsi: the VSI that is capable of doing FCoE
 749  **/
 750 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 751 {
 752         struct i40e_pf *pf = vsi->back;
 753         struct i40e_hw *hw = &pf->hw;
 754         struct i40e_fcoe_stats *ofs;
 755         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 756         int idx;
 757
 758         if (vsi->type != I40E_VSI_FCOE)
 759                 return;
 760
 761         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 762         fs = &vsi->fcoe_stats;
 763         ofs = &vsi->fcoe_stats_offsets;
 764
 765         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 768         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 771         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 774         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 777         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 780         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 783         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 786         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 787                            vsi->fcoe_stat_offsets_loaded,
 788                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 789
 790         vsi->fcoe_stat_offsets_loaded = true;
 791 }
 792
 793 #endif
 794 /**
 795  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 796  * @pf: the corresponding PF
 797  *
 798  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 799  **/
 800 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 801 {
 802         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 803         struct i40e_hw_port_stats *nsd = &pf->stats;
 804         struct i40e_hw *hw = &pf->hw;
 805         u64 xoff = 0;
 806
 807         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 808             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 809                 return;
 810
 811         xoff = nsd->link_xoff_rx;
 812         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 813                            pf->stat_offsets_loaded,
 814                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 815
 816         /* No new LFC xoff rx */
 817         if (!(nsd->link_xoff_rx - xoff))
 818                 return;
 819
 820 }
 821
 822 /**
 823  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 824  * @pf: the corresponding PF
 825  *
 826  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 827  **/
 828 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 829 {
 830         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 831         struct i40e_hw_port_stats *nsd = &pf->stats;
 832         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 833         struct i40e_dcbx_config *dcb_cfg;
 834         struct i40e_hw *hw = &pf->hw;
 835         u16 i;
 836         u8 tc;
 837
 838         dcb_cfg = &hw->local_dcbx_config;
 839
 840         /* Collect Link XOFF stats when PFC is disabled */
 841         if (!dcb_cfg->pfc.pfcenable) {
 842                 i40e_update_link_xoff_rx(pf);
 843                 return;
 844         }
 845
 846         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 847                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 848
 849                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 850                                    pf->stat_offsets_loaded,
 851                                    &osd->priority_xoff_rx[i],
 852                                    &nsd->priority_xoff_rx[i]);
 853
 854                 /* No new PFC xoff rx */
 855                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 856                         continue;
 857                 /* Get the TC for given priority */
 858                 tc = dcb_cfg->etscfg.prioritytable[i];
 859                 xoff[tc] = true;
 860         }
 861 }
 862
 863 /**
 864  * i40e_update_vsi_stats - Update the vsi statistics counters.
 865  * @vsi: the VSI to be updated
 866  *
 867  * There are a few instances where we store the same stat in a
 868  * couple of different structs.  This is partly because we have
 869  * the netdev stats that need to be filled out, which is slightly
 870  * different from the "eth_stats" defined by the chip and used in
 871  * VF communications.  We sort it out here.
 872  **/
 873 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 874 {
 875         struct i40e_pf *pf = vsi->back;
 876         struct rtnl_link_stats64 *ons;
 877         struct rtnl_link_stats64 *ns;   /* netdev stats */
 878         struct i40e_eth_stats *oes;
 879         struct i40e_eth_stats *es;     /* device's eth stats */
 880         u32 tx_restart, tx_busy;
 881         struct i40e_ring *p;
 882         u32 rx_page, rx_buf;
 883         u64 bytes, packets;
 884         unsigned int start;
 885         u64 tx_linearize;
 886         u64 tx_force_wb;
 887         u64 rx_p, rx_b;
 888         u64 tx_p, tx_b;
 889         u16 q;
 890
 891         if (test_bit(__I40E_DOWN, &vsi->state) ||
 892             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 893                 return;
 894
 895         ns = i40e_get_vsi_stats_struct(vsi);
 896         ons = &vsi->net_stats_offsets;
 897         es = &vsi->eth_stats;
 898         oes = &vsi->eth_stats_offsets;
 899
 900         /* Gather up the netdev and vsi stats that the driver collects
 901          * on the fly during packet processing
 902          */
 903         rx_b = rx_p = 0;
 904         tx_b = tx_p = 0;
 905         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 906         rx_page = 0;
 907         rx_buf = 0;
 908         rcu_read_lock();
 909         for (q = 0; q < vsi->num_queue_pairs; q++) {
 910                 /* locate Tx ring */
 911                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 912
 913                 do {
 914                         start = u64_stats_fetch_begin_irq(&p->syncp);
 915                         packets = p->stats.packets;
 916                         bytes = p->stats.bytes;
 917                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 918                 tx_b += bytes;
 919                 tx_p += packets;
 920                 tx_restart += p->tx_stats.restart_queue;
 921                 tx_busy += p->tx_stats.tx_busy;
 922                 tx_linearize += p->tx_stats.tx_linearize;
 923                 tx_force_wb += p->tx_stats.tx_force_wb;
 924
 925                 /* Rx queue is part of the same block as Tx queue */
 926                 p = &p[1];
 927                 do {
 928                         start = u64_stats_fetch_begin_irq(&p->syncp);
 929                         packets = p->stats.packets;
 930                         bytes = p->stats.bytes;
 931                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 932                 rx_b += bytes;
 933                 rx_p += packets;
 934                 rx_buf += p->rx_stats.alloc_buff_failed;
 935                 rx_page += p->rx_stats.alloc_page_failed;
 936         }
 937         rcu_read_unlock();
 938         vsi->tx_restart = tx_restart;
 939         vsi->tx_busy = tx_busy;
 940         vsi->tx_linearize = tx_linearize;
 941         vsi->tx_force_wb = tx_force_wb;
 942         vsi->rx_page_failed = rx_page;
 943         vsi->rx_buf_failed = rx_buf;
 944
 945         ns->rx_packets = rx_p;
 946         ns->rx_bytes = rx_b;
 947         ns->tx_packets = tx_p;
 948         ns->tx_bytes = tx_b;
 949
 950         /* update netdev stats from eth stats */
 951         i40e_update_eth_stats(vsi);
 952         ons->tx_errors = oes->tx_errors;
 953         ns->tx_errors = es->tx_errors;
 954         ons->multicast = oes->rx_multicast;
 955         ns->multicast = es->rx_multicast;
 956         ons->rx_dropped = oes->rx_discards;
 957         ns->rx_dropped = es->rx_discards;
 958         ons->tx_dropped = oes->tx_discards;
 959         ns->tx_dropped = es->tx_discards;
 960
 961         /* pull in a couple PF stats if this is the main vsi */
 962         if (vsi == pf->vsi[pf->lan_vsi]) {
 963                 ns->rx_crc_errors = pf->stats.crc_errors;
 964                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 965                 ns->rx_length_errors = pf->stats.rx_length_errors;
 966         }
 967 }
 968
 969 /**
 970  * i40e_update_pf_stats - Update the PF statistics counters.
 971  * @pf: the PF to be updated
 972  **/
 973 static void i40e_update_pf_stats(struct i40e_pf *pf)
 974 {
 975         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 976         struct i40e_hw_port_stats *nsd = &pf->stats;
 977         struct i40e_hw *hw = &pf->hw;
 978         u32 val;
 979         int i;
 980
 981         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 982                            I40E_GLPRT_GORCL(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 985         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 986                            I40E_GLPRT_GOTCL(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 989         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_discards,
 992                            &nsd->eth.rx_discards);
 993         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 994                            I40E_GLPRT_UPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_unicast,
 997                            &nsd->eth.rx_unicast);
 998         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 999                            I40E_GLPRT_MPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_multicast,
1002                            &nsd->eth.rx_multicast);
1003         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1004                            I40E_GLPRT_BPRCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.rx_broadcast,
1007                            &nsd->eth.rx_broadcast);
1008         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1009                            I40E_GLPRT_UPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_unicast,
1012                            &nsd->eth.tx_unicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1014                            I40E_GLPRT_MPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_multicast,
1017                            &nsd->eth.tx_multicast);
1018         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1019                            I40E_GLPRT_BPTCL(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->eth.tx_broadcast,
1022                            &nsd->eth.tx_broadcast);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->tx_dropped_link_down,
1027                            &nsd->tx_dropped_link_down);
1028
1029         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->crc_errors, &nsd->crc_errors);
1032
1033         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->illegal_bytes, &nsd->illegal_bytes);
1036
1037         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->mac_local_faults,
1040                            &nsd->mac_local_faults);
1041         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->mac_remote_faults,
1044                            &nsd->mac_remote_faults);
1045
1046         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_length_errors,
1049                            &nsd->rx_length_errors);
1050
1051         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->link_xon_rx, &nsd->link_xon_rx);
1054         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->link_xon_tx, &nsd->link_xon_tx);
1057         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1058         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1061
1062         for (i = 0; i < 8; i++) {
1063                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1064                                    pf->stat_offsets_loaded,
1065                                    &osd->priority_xon_rx[i],
1066                                    &nsd->priority_xon_rx[i]);
1067                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1068                                    pf->stat_offsets_loaded,
1069                                    &osd->priority_xon_tx[i],
1070                                    &nsd->priority_xon_tx[i]);
1071                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1072                                    pf->stat_offsets_loaded,
1073                                    &osd->priority_xoff_tx[i],
1074                                    &nsd->priority_xoff_tx[i]);
1075                 i40e_stat_update32(hw,
1076                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1077                                    pf->stat_offsets_loaded,
1078                                    &osd->priority_xon_2_xoff[i],
1079                                    &nsd->priority_xon_2_xoff[i]);
1080         }
1081
1082         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1083                            I40E_GLPRT_PRC64L(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_size_64, &nsd->rx_size_64);
1086         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1087                            I40E_GLPRT_PRC127L(hw->port),
1088                            pf->stat_offsets_loaded,
1089                            &osd->rx_size_127, &nsd->rx_size_127);
1090         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1091                            I40E_GLPRT_PRC255L(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_size_255, &nsd->rx_size_255);
1094         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1095                            I40E_GLPRT_PRC511L(hw->port),
1096                            pf->stat_offsets_loaded,
1097                            &osd->rx_size_511, &nsd->rx_size_511);
1098         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1099                            I40E_GLPRT_PRC1023L(hw->port),
1100                            pf->stat_offsets_loaded,
1101                            &osd->rx_size_1023, &nsd->rx_size_1023);
1102         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1103                            I40E_GLPRT_PRC1522L(hw->port),
1104                            pf->stat_offsets_loaded,
1105                            &osd->rx_size_1522, &nsd->rx_size_1522);
1106         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1107                            I40E_GLPRT_PRC9522L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->rx_size_big, &nsd->rx_size_big);
1110
1111         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1112                            I40E_GLPRT_PTC64L(hw->port),
1113                            pf->stat_offsets_loaded,
1114                            &osd->tx_size_64, &nsd->tx_size_64);
1115         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1116                            I40E_GLPRT_PTC127L(hw->port),
1117                            pf->stat_offsets_loaded,
1118                            &osd->tx_size_127, &nsd->tx_size_127);
1119         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1120                            I40E_GLPRT_PTC255L(hw->port),
1121                            pf->stat_offsets_loaded,
1122                            &osd->tx_size_255, &nsd->tx_size_255);
1123         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1124                            I40E_GLPRT_PTC511L(hw->port),
1125                            pf->stat_offsets_loaded,
1126                            &osd->tx_size_511, &nsd->tx_size_511);
1127         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1128                            I40E_GLPRT_PTC1023L(hw->port),
1129                            pf->stat_offsets_loaded,
1130                            &osd->tx_size_1023, &nsd->tx_size_1023);
1131         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1132                            I40E_GLPRT_PTC1522L(hw->port),
1133                            pf->stat_offsets_loaded,
1134                            &osd->tx_size_1522, &nsd->tx_size_1522);
1135         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1136                            I40E_GLPRT_PTC9522L(hw->port),
1137                            pf->stat_offsets_loaded,
1138                            &osd->tx_size_big, &nsd->tx_size_big);
1139
1140         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_undersize, &nsd->rx_undersize);
1143         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1144                            pf->stat_offsets_loaded,
1145                            &osd->rx_fragments, &nsd->rx_fragments);
1146         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1147                            pf->stat_offsets_loaded,
1148                            &osd->rx_oversize, &nsd->rx_oversize);
1149         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1150                            pf->stat_offsets_loaded,
1151                            &osd->rx_jabber, &nsd->rx_jabber);
1152
1153         /* FDIR stats */
1154         i40e_stat_update32(hw,
1155                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1156                            pf->stat_offsets_loaded,
1157                            &osd->fd_atr_match, &nsd->fd_atr_match);
1158         i40e_stat_update32(hw,
1159                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1160                            pf->stat_offsets_loaded,
1161                            &osd->fd_sb_match, &nsd->fd_sb_match);
1162         i40e_stat_update32(hw,
1163                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1164                       pf->stat_offsets_loaded,
1165                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1166
1167         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1168         nsd->tx_lpi_status =
1169                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1170                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1171         nsd->rx_lpi_status =
1172                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1173                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1174         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1175                            pf->stat_offsets_loaded,
1176                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1177         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1178                            pf->stat_offsets_loaded,
1179                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1180
1181         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1182             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1183                 nsd->fd_sb_status = true;
1184         else
1185                 nsd->fd_sb_status = false;
1186
1187         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1188             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1189                 nsd->fd_atr_status = true;
1190         else
1191                 nsd->fd_atr_status = false;
1192
1193         pf->stat_offsets_loaded = true;
1194 }
1195
1196 /**
1197  * i40e_update_stats - Update the various statistics counters.
1198  * @vsi: the VSI to be updated
1199  *
1200  * Update the various stats for this VSI and its related entities.
1201  **/
1202 void i40e_update_stats(struct i40e_vsi *vsi)
1203 {
1204         struct i40e_pf *pf = vsi->back;
1205
1206         if (vsi == pf->vsi[pf->lan_vsi])
1207                 i40e_update_pf_stats(pf);
1208
1209         i40e_update_vsi_stats(vsi);
1210 #ifdef I40E_FCOE
1211         i40e_update_fcoe_stats(vsi);
1212 #endif
1213 }
1214
1215 /**
1216  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1217  * @vsi: the VSI to be searched
1218  * @macaddr: the MAC address
1219  * @vlan: the vlan
1220  * @is_vf: make sure its a VF filter, else doesn't matter
1221  * @is_netdev: make sure its a netdev filter, else doesn't matter
1222  *
1223  * Returns ptr to the filter object or NULL
1224  **/
1225 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1226                                                 u8 *macaddr, s16 vlan,
1227                                                 bool is_vf, bool is_netdev)
1228 {
1229         struct i40e_mac_filter *f;
1230
1231         if (!vsi || !macaddr)
1232                 return NULL;
1233
1234         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1235                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1236                     (vlan == f->vlan)    &&
1237                     (!is_vf || f->is_vf) &&
1238                     (!is_netdev || f->is_netdev))
1239                         return f;
1240         }
1241         return NULL;
1242 }
1243
1244 /**
1245  * i40e_find_mac - Find a mac addr in the macvlan filters list
1246  * @vsi: the VSI to be searched
1247  * @macaddr: the MAC address we are searching for
1248  * @is_vf: make sure its a VF filter, else doesn't matter
1249  * @is_netdev: make sure its a netdev filter, else doesn't matter
1250  *
1251  * Returns the first filter with the provided MAC address or NULL if
1252  * MAC address was not found
1253  **/
1254 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1255                                       bool is_vf, bool is_netdev)
1256 {
1257         struct i40e_mac_filter *f;
1258
1259         if (!vsi || !macaddr)
1260                 return NULL;
1261
1262         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1263                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1264                     (!is_vf || f->is_vf) &&
1265                     (!is_netdev || f->is_netdev))
1266                         return f;
1267         }
1268         return NULL;
1269 }
1270
1271 /**
1272  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1273  * @vsi: the VSI to be searched
1274  *
1275  * Returns true if VSI is in vlan mode or false otherwise
1276  **/
1277 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1278 {
1279         struct i40e_mac_filter *f;
1280
1281         /* Only -1 for all the filters denotes not in vlan mode
1282          * so we have to go through all the list in order to make sure
1283          */
1284         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1285                 if (f->vlan >= 0 || vsi->info.pvid)
1286                         return true;
1287         }
1288
1289         return false;
1290 }
1291
1292 /**
1293  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1294  * @vsi: the VSI to be searched
1295  * @macaddr: the mac address to be filtered
1296  * @is_vf: true if it is a VF
1297  * @is_netdev: true if it is a netdev
1298  *
1299  * Goes through all the macvlan filters and adds a
1300  * macvlan filter for each unique vlan that already exists
1301  *
1302  * Returns first filter found on success, else NULL
1303  **/
1304 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1305                                              bool is_vf, bool is_netdev)
1306 {
1307         struct i40e_mac_filter *f;
1308
1309         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1310                 if (vsi->info.pvid)
1311                         f->vlan = le16_to_cpu(vsi->info.pvid);
1312                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1313                                       is_vf, is_netdev)) {
1314                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1315                                              is_vf, is_netdev))
1316                                 return NULL;
1317                 }
1318         }
1319
1320         return list_first_entry_or_null(&vsi->mac_filter_list,
1321                                         struct i40e_mac_filter, list);
1322 }
1323
1324 /**
1325  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1326  * @vsi: the PF Main VSI - inappropriate for any other VSI
1327  * @macaddr: the MAC address
1328  *
1329  * Some older firmware configurations set up a default promiscuous VLAN
1330  * filter that needs to be removed.
1331  **/
1332 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1333 {
1334         struct i40e_aqc_remove_macvlan_element_data element;
1335         struct i40e_pf *pf = vsi->back;
1336         i40e_status ret;
1337
1338         /* Only appropriate for the PF main VSI */
1339         if (vsi->type != I40E_VSI_MAIN)
1340                 return -EINVAL;
1341
1342         memset(&element, 0, sizeof(element));
1343         ether_addr_copy(element.mac_addr, macaddr);
1344         element.vlan_tag = 0;
1345         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1346                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1347         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1348         if (ret)
1349                 return -ENOENT;
1350
1351         return 0;
1352 }
1353
1354 /**
1355  * i40e_add_filter - Add a mac/vlan filter to the VSI
1356  * @vsi: the VSI to be searched
1357  * @macaddr: the MAC address
1358  * @vlan: the vlan
1359  * @is_vf: make sure its a VF filter, else doesn't matter
1360  * @is_netdev: make sure its a netdev filter, else doesn't matter
1361  *
1362  * Returns ptr to the filter object or NULL when no memory available.
1363  *
1364  * NOTE: This function is expected to be called with mac_filter_list_lock
1365  * being held.
1366  **/
1367 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1368                                         u8 *macaddr, s16 vlan,
1369                                         bool is_vf, bool is_netdev)
1370 {
1371         struct i40e_mac_filter *f;
1372
1373         if (!vsi || !macaddr)
1374                 return NULL;
1375
1376         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1377         if (!f) {
1378                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1379                 if (!f)
1380                         goto add_filter_out;
1381
1382                 ether_addr_copy(f->macaddr, macaddr);
1383                 f->vlan = vlan;
1384                 f->changed = true;
1385
1386                 INIT_LIST_HEAD(&f->list);
1387                 list_add(&f->list, &vsi->mac_filter_list);
1388         }
1389
1390         /* increment counter and add a new flag if needed */
1391         if (is_vf) {
1392                 if (!f->is_vf) {
1393                         f->is_vf = true;
1394                         f->counter++;
1395                 }
1396         } else if (is_netdev) {
1397                 if (!f->is_netdev) {
1398                         f->is_netdev = true;
1399                         f->counter++;
1400                 }
1401         } else {
1402                 f->counter++;
1403         }
1404
1405         /* changed tells sync_filters_subtask to
1406          * push the filter down to the firmware
1407          */
1408         if (f->changed) {
1409                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1410                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1411         }
1412
1413 add_filter_out:
1414         return f;
1415 }
1416
1417 /**
1418  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1419  * @vsi: the VSI to be searched
1420  * @macaddr: the MAC address
1421  * @vlan: the vlan
1422  * @is_vf: make sure it's a VF filter, else doesn't matter
1423  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1424  *
1425  * NOTE: This function is expected to be called with mac_filter_list_lock
1426  * being held.
1427  **/
1428 void i40e_del_filter(struct i40e_vsi *vsi,
1429                      u8 *macaddr, s16 vlan,
1430                      bool is_vf, bool is_netdev)
1431 {
1432         struct i40e_mac_filter *f;
1433
1434         if (!vsi || !macaddr)
1435                 return;
1436
1437         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1438         if (!f || f->counter == 0)
1439                 return;
1440
1441         if (is_vf) {
1442                 if (f->is_vf) {
1443                         f->is_vf = false;
1444                         f->counter--;
1445                 }
1446         } else if (is_netdev) {
1447                 if (f->is_netdev) {
1448                         f->is_netdev = false;
1449                         f->counter--;
1450                 }
1451         } else {
1452                 /* make sure we don't remove a filter in use by VF or netdev */
1453                 int min_f = 0;
1454
1455                 min_f += (f->is_vf ? 1 : 0);
1456                 min_f += (f->is_netdev ? 1 : 0);
1457
1458                 if (f->counter > min_f)
1459                         f->counter--;
1460         }
1461
1462         /* counter == 0 tells sync_filters_subtask to
1463          * remove the filter from the firmware's list
1464          */
1465         if (f->counter == 0) {
1466                 f->changed = true;
1467                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1468                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1469         }
1470 }
1471
1472 /**
1473  * i40e_set_mac - NDO callback to set mac address
1474  * @netdev: network interface device structure
1475  * @p: pointer to an address structure
1476  *
1477  * Returns 0 on success, negative on failure
1478  **/
1479 #ifdef I40E_FCOE
1480 int i40e_set_mac(struct net_device *netdev, void *p)
1481 #else
1482 static int i40e_set_mac(struct net_device *netdev, void *p)
1483 #endif
1484 {
1485         struct i40e_netdev_priv *np = netdev_priv(netdev);
1486         struct i40e_vsi *vsi = np->vsi;
1487         struct i40e_pf *pf = vsi->back;
1488         struct i40e_hw *hw = &pf->hw;
1489         struct sockaddr *addr = p;
1490         struct i40e_mac_filter *f;
1491
1492         if (!is_valid_ether_addr(addr->sa_data))
1493                 return -EADDRNOTAVAIL;
1494
1495         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1496                 netdev_info(netdev, "already using mac address %pM\n",
1497                             addr->sa_data);
1498                 return 0;
1499         }
1500
1501         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1502             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1503                 return -EADDRNOTAVAIL;
1504
1505         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1506                 netdev_info(netdev, "returning to hw mac address %pM\n",
1507                             hw->mac.addr);
1508         else
1509                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1510
1511         if (vsi->type == I40E_VSI_MAIN) {
1512                 i40e_status ret;
1513
1514                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1515                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1516                                                 addr->sa_data, NULL);
1517                 if (ret) {
1518                         netdev_info(netdev,
1519                                     "Addr change for Main VSI failed: %d\n",
1520                                     ret);
1521                         return -EADDRNOTAVAIL;
1522                 }
1523         }
1524
1525         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1526                 struct i40e_aqc_remove_macvlan_element_data element;
1527
1528                 memset(&element, 0, sizeof(element));
1529                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1530                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1531                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1532         } else {
1533                 spin_lock_bh(&vsi->mac_filter_list_lock);
1534                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1535                                 false, false);
1536                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1537         }
1538
1539         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1540                 struct i40e_aqc_add_macvlan_element_data element;
1541
1542                 memset(&element, 0, sizeof(element));
1543                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1544                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1545                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1546         } else {
1547                 spin_lock_bh(&vsi->mac_filter_list_lock);
1548                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1549                                     false, false);
1550                 if (f)
1551                         f->is_laa = true;
1552                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1553         }
1554
1555         i40e_sync_vsi_filters(vsi, false);
1556         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1557
1558         return 0;
1559 }
1560
1561 /**
1562  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1563  * @vsi: the VSI being setup
1564  * @ctxt: VSI context structure
1565  * @enabled_tc: Enabled TCs bitmap
1566  * @is_add: True if called before Add VSI
1567  *
1568  * Setup VSI queue mapping for enabled traffic classes.
1569  **/
1570 #ifdef I40E_FCOE
1571 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1572                               struct i40e_vsi_context *ctxt,
1573                               u8 enabled_tc,
1574                               bool is_add)
1575 #else
1576 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1577                                      struct i40e_vsi_context *ctxt,
1578                                      u8 enabled_tc,
1579                                      bool is_add)
1580 #endif
1581 {
1582         struct i40e_pf *pf = vsi->back;
1583         u16 sections = 0;
1584         u8 netdev_tc = 0;
1585         u16 numtc = 0;
1586         u16 qcount;
1587         u8 offset;
1588         u16 qmap;
1589         int i;
1590         u16 num_tc_qps = 0;
1591
1592         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1593         offset = 0;
1594
1595         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1596                 /* Find numtc from enabled TC bitmap */
1597                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1598                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1599                                 numtc++;
1600                 }
1601                 if (!numtc) {
1602                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1603                         numtc = 1;
1604                 }
1605         } else {
1606                 /* At least TC0 is enabled in case of non-DCB case */
1607                 numtc = 1;
1608         }
1609
1610         vsi->tc_config.numtc = numtc;
1611         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1612         /* Number of queues per enabled TC */
1613         /* In MFP case we can have a much lower count of MSIx
1614          * vectors available and so we need to lower the used
1615          * q count.
1616          */
1617         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1618                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1619         else
1620                 qcount = vsi->alloc_queue_pairs;
1621         num_tc_qps = qcount / numtc;
1622         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1623
1624         /* Setup queue offset/count for all TCs for given VSI */
1625         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1626                 /* See if the given TC is enabled for the given VSI */
1627                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1628                         /* TC is enabled */
1629                         int pow, num_qps;
1630
1631                         switch (vsi->type) {
1632                         case I40E_VSI_MAIN:
1633                                 qcount = min_t(int, pf->alloc_rss_size,
1634                                                num_tc_qps);
1635                                 break;
1636 #ifdef I40E_FCOE
1637                         case I40E_VSI_FCOE:
1638                                 qcount = num_tc_qps;
1639                                 break;
1640 #endif
1641                         case I40E_VSI_FDIR:
1642                         case I40E_VSI_SRIOV:
1643                         case I40E_VSI_VMDQ2:
1644                         default:
1645                                 qcount = num_tc_qps;
1646                                 WARN_ON(i != 0);
1647                                 break;
1648                         }
1649                         vsi->tc_config.tc_info[i].qoffset = offset;
1650                         vsi->tc_config.tc_info[i].qcount = qcount;
1651
1652                         /* find the next higher power-of-2 of num queue pairs */
1653                         num_qps = qcount;
1654                         pow = 0;
1655                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1656                                 pow++;
1657                                 num_qps >>= 1;
1658                         }
1659
1660                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1661                         qmap =
1662                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1663                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1664
1665                         offset += qcount;
1666                 } else {
1667                         /* TC is not enabled so set the offset to
1668                          * default queue and allocate one queue
1669                          * for the given TC.
1670                          */
1671                         vsi->tc_config.tc_info[i].qoffset = 0;
1672                         vsi->tc_config.tc_info[i].qcount = 1;
1673                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1674
1675                         qmap = 0;
1676                 }
1677                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1678         }
1679
1680         /* Set actual Tx/Rx queue pairs */
1681         vsi->num_queue_pairs = offset;
1682         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1683                 if (vsi->req_queue_pairs > 0)
1684                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1685                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1686                         vsi->num_queue_pairs = pf->num_lan_msix;
1687         }
1688
1689         /* Scheduler section valid can only be set for ADD VSI */
1690         if (is_add) {
1691                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1692
1693                 ctxt->info.up_enable_bits = enabled_tc;
1694         }
1695         if (vsi->type == I40E_VSI_SRIOV) {
1696                 ctxt->info.mapping_flags |=
1697                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1698                 for (i = 0; i < vsi->num_queue_pairs; i++)
1699                         ctxt->info.queue_mapping[i] =
1700                                                cpu_to_le16(vsi->base_queue + i);
1701         } else {
1702                 ctxt->info.mapping_flags |=
1703                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1704                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1705         }
1706         ctxt->info.valid_sections |= cpu_to_le16(sections);
1707 }
1708
1709 /**
1710  * i40e_set_rx_mode - NDO callback to set the netdev filters
1711  * @netdev: network interface device structure
1712  **/
1713 #ifdef I40E_FCOE
1714 void i40e_set_rx_mode(struct net_device *netdev)
1715 #else
1716 static void i40e_set_rx_mode(struct net_device *netdev)
1717 #endif
1718 {
1719         struct i40e_netdev_priv *np = netdev_priv(netdev);
1720         struct i40e_mac_filter *f, *ftmp;
1721         struct i40e_vsi *vsi = np->vsi;
1722         struct netdev_hw_addr *uca;
1723         struct netdev_hw_addr *mca;
1724         struct netdev_hw_addr *ha;
1725
1726         spin_lock_bh(&vsi->mac_filter_list_lock);
1727
1728         /* add addr if not already in the filter list */
1729         netdev_for_each_uc_addr(uca, netdev) {
1730                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1731                         if (i40e_is_vsi_in_vlan(vsi))
1732                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1733                                                      false, true);
1734                         else
1735                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1736                                                 false, true);
1737                 }
1738         }
1739
1740         netdev_for_each_mc_addr(mca, netdev) {
1741                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1742                         if (i40e_is_vsi_in_vlan(vsi))
1743                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1744                                                      false, true);
1745                         else
1746                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1747                                                 false, true);
1748                 }
1749         }
1750
1751         /* remove filter if not in netdev list */
1752         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1753
1754                 if (!f->is_netdev)
1755                         continue;
1756
1757                 netdev_for_each_mc_addr(mca, netdev)
1758                         if (ether_addr_equal(mca->addr, f->macaddr))
1759                                 goto bottom_of_search_loop;
1760
1761                 netdev_for_each_uc_addr(uca, netdev)
1762                         if (ether_addr_equal(uca->addr, f->macaddr))
1763                                 goto bottom_of_search_loop;
1764
1765                 for_each_dev_addr(netdev, ha)
1766                         if (ether_addr_equal(ha->addr, f->macaddr))
1767                                 goto bottom_of_search_loop;
1768
1769                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1770                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1771
1772 bottom_of_search_loop:
1773                 continue;
1774         }
1775         spin_unlock_bh(&vsi->mac_filter_list_lock);
1776
1777         /* check for other flag changes */
1778         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1779                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1780                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1781         }
1782 }
1783
1784 /**
1785  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1786  * @src: source MAC filter entry to be clones
1787  *
1788  * Returns the pointer to newly cloned MAC filter entry or NULL
1789  * in case of error
1790  **/
1791 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1792                                         struct i40e_mac_filter *src)
1793 {
1794         struct i40e_mac_filter *f;
1795
1796         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1797         if (!f)
1798                 return NULL;
1799         *f = *src;
1800
1801         INIT_LIST_HEAD(&f->list);
1802
1803         return f;
1804 }
1805
1806 /**
1807  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1808  * @vsi: pointer to vsi struct
1809  * @from: Pointer to list which contains MAC filter entries - changes to
1810  *        those entries needs to be undone.
1811  *
1812  * MAC filter entries from list were slated to be removed from device.
1813  **/
1814 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1815                                          struct list_head *from)
1816 {
1817         struct i40e_mac_filter *f, *ftmp;
1818
1819         list_for_each_entry_safe(f, ftmp, from, list) {
1820                 f->changed = true;
1821                 /* Move the element back into MAC filter list*/
1822                 list_move_tail(&f->list, &vsi->mac_filter_list);
1823         }
1824 }
1825
1826 /**
1827  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1828  * @vsi: pointer to vsi struct
1829  *
1830  * MAC filter entries from list were slated to be added from device.
1831  **/
1832 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1833 {
1834         struct i40e_mac_filter *f, *ftmp;
1835
1836         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1837                 if (!f->changed && f->counter)
1838                         f->changed = true;
1839         }
1840 }
1841
1842 /**
1843  * i40e_cleanup_add_list - Deletes the element from add list and release
1844  *                      memory
1845  * @add_list: Pointer to list which contains MAC filter entries
1846  **/
1847 static void i40e_cleanup_add_list(struct list_head *add_list)
1848 {
1849         struct i40e_mac_filter *f, *ftmp;
1850
1851         list_for_each_entry_safe(f, ftmp, add_list, list) {
1852                 list_del(&f->list);
1853                 kfree(f);
1854         }
1855 }
1856
1857 /**
1858  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1859  * @vsi: ptr to the VSI
1860  * @grab_rtnl: whether RTNL needs to be grabbed
1861  *
1862  * Push any outstanding VSI filter changes through the AdminQ.
1863  *
1864  * Returns 0 or error value
1865  **/
1866 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1867 {
1868         struct list_head tmp_del_list, tmp_add_list;
1869         struct i40e_mac_filter *f, *ftmp, *fclone;
1870         bool promisc_forced_on = false;
1871         bool add_happened = false;
1872         int filter_list_len = 0;
1873         u32 changed_flags = 0;
1874         bool err_cond = false;
1875         i40e_status ret = 0;
1876         struct i40e_pf *pf;
1877         int num_add = 0;
1878         int num_del = 0;
1879         int aq_err = 0;
1880         u16 cmd_flags;
1881
1882         /* empty array typed pointers, kcalloc later */
1883         struct i40e_aqc_add_macvlan_element_data *add_list;
1884         struct i40e_aqc_remove_macvlan_element_data *del_list;
1885
1886         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1887                 usleep_range(1000, 2000);
1888         pf = vsi->back;
1889
1890         if (vsi->netdev) {
1891                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1892                 vsi->current_netdev_flags = vsi->netdev->flags;
1893         }
1894
1895         INIT_LIST_HEAD(&tmp_del_list);
1896         INIT_LIST_HEAD(&tmp_add_list);
1897
1898         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1899                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1900
1901                 spin_lock_bh(&vsi->mac_filter_list_lock);
1902                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1903                         if (!f->changed)
1904                                 continue;
1905
1906                         if (f->counter != 0)
1907                                 continue;
1908                         f->changed = false;
1909
1910                         /* Move the element into temporary del_list */
1911                         list_move_tail(&f->list, &tmp_del_list);
1912                 }
1913
1914                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1915                         if (!f->changed)
1916                                 continue;
1917
1918                         if (f->counter == 0)
1919                                 continue;
1920                         f->changed = false;
1921
1922                         /* Clone MAC filter entry and add into temporary list */
1923                         fclone = i40e_mac_filter_entry_clone(f);
1924                         if (!fclone) {
1925                                 err_cond = true;
1926                                 break;
1927                         }
1928                         list_add_tail(&fclone->list, &tmp_add_list);
1929                 }
1930
1931                 /* if failed to clone MAC filter entry - undo */
1932                 if (err_cond) {
1933                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1934                         i40e_undo_add_filter_entries(vsi);
1935                 }
1936                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1937
1938                 if (err_cond)
1939                         i40e_cleanup_add_list(&tmp_add_list);
1940         }
1941
1942         /* Now process 'del_list' outside the lock */
1943         if (!list_empty(&tmp_del_list)) {
1944                 filter_list_len = pf->hw.aq.asq_buf_size /
1945                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1946                 del_list = kcalloc(filter_list_len,
1947                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1948                             GFP_KERNEL);
1949                 if (!del_list) {
1950                         i40e_cleanup_add_list(&tmp_add_list);
1951
1952                         /* Undo VSI's MAC filter entry element updates */
1953                         spin_lock_bh(&vsi->mac_filter_list_lock);
1954                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1955                         i40e_undo_add_filter_entries(vsi);
1956                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1957                         return -ENOMEM;
1958                 }
1959
1960                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1961                         cmd_flags = 0;
1962
1963                         /* add to delete list */
1964                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1965                         del_list[num_del].vlan_tag =
1966                                 cpu_to_le16((u16)(f->vlan ==
1967                                             I40E_VLAN_ANY ? 0 : f->vlan));
1968
1969                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1970                         del_list[num_del].flags = cmd_flags;
1971                         num_del++;
1972
1973                         /* flush a full buffer */
1974                         if (num_del == filter_list_len) {
1975                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1976                                                   vsi->seid, del_list, num_del,
1977                                                   NULL);
1978                                 aq_err = pf->hw.aq.asq_last_status;
1979                                 num_del = 0;
1980                                 memset(del_list, 0, sizeof(*del_list));
1981
1982                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1983                                         dev_err(&pf->pdev->dev,
1984                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1985                                                 i40e_stat_str(&pf->hw, ret),
1986                                                 i40e_aq_str(&pf->hw, aq_err));
1987                         }
1988                         /* Release memory for MAC filter entries which were
1989                          * synced up with HW.
1990                          */
1991                         list_del(&f->list);
1992                         kfree(f);
1993                 }
1994
1995                 if (num_del) {
1996                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1997                                                      del_list, num_del, NULL);
1998                         aq_err = pf->hw.aq.asq_last_status;
1999                         num_del = 0;
2000
2001                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
2002                                 dev_info(&pf->pdev->dev,
2003                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2004                                          i40e_stat_str(&pf->hw, ret),
2005                                          i40e_aq_str(&pf->hw, aq_err));
2006                 }
2007
2008                 kfree(del_list);
2009                 del_list = NULL;
2010         }
2011
2012         if (!list_empty(&tmp_add_list)) {
2013
2014                 /* do all the adds now */
2015                 filter_list_len = pf->hw.aq.asq_buf_size /
2016                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2017                 add_list = kcalloc(filter_list_len,
2018                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2019                                GFP_KERNEL);
2020                 if (!add_list) {
2021                         /* Purge element from temporary lists */
2022                         i40e_cleanup_add_list(&tmp_add_list);
2023
2024                         /* Undo add filter entries from VSI MAC filter list */
2025                         spin_lock_bh(&vsi->mac_filter_list_lock);
2026                         i40e_undo_add_filter_entries(vsi);
2027                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2028                         return -ENOMEM;
2029                 }
2030
2031                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2032
2033                         add_happened = true;
2034                         cmd_flags = 0;
2035
2036                         /* add to add array */
2037                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2038                         add_list[num_add].vlan_tag =
2039                                 cpu_to_le16(
2040                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2041                         add_list[num_add].queue_number = 0;
2042
2043                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2044                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2045                         num_add++;
2046
2047                         /* flush a full buffer */
2048                         if (num_add == filter_list_len) {
2049                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2050                                                           add_list, num_add,
2051                                                           NULL);
2052                                 aq_err = pf->hw.aq.asq_last_status;
2053                                 num_add = 0;
2054
2055                                 if (ret)
2056                                         break;
2057                                 memset(add_list, 0, sizeof(*add_list));
2058                         }
2059                         /* Entries from tmp_add_list were cloned from MAC
2060                          * filter list, hence clean those cloned entries
2061                          */
2062                         list_del(&f->list);
2063                         kfree(f);
2064                 }
2065
2066                 if (num_add) {
2067                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2068                                                   add_list, num_add, NULL);
2069                         aq_err = pf->hw.aq.asq_last_status;
2070                         num_add = 0;
2071                 }
2072                 kfree(add_list);
2073                 add_list = NULL;
2074
2075                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
2076                         dev_info(&pf->pdev->dev,
2077                                  "add filter failed, err %s aq_err %s\n",
2078                                  i40e_stat_str(&pf->hw, ret),
2079                                  i40e_aq_str(&pf->hw, aq_err));
2080                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2081                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2082                                       &vsi->state)) {
2083                                 promisc_forced_on = true;
2084                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2085                                         &vsi->state);
2086                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2087                         }
2088                 }
2089         }
2090
2091         /* check for changes in promiscuous modes */
2092         if (changed_flags & IFF_ALLMULTI) {
2093                 bool cur_multipromisc;
2094
2095                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2096                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2097                                                             vsi->seid,
2098                                                             cur_multipromisc,
2099                                                             NULL);
2100                 if (ret)
2101                         dev_info(&pf->pdev->dev,
2102                                  "set multi promisc failed, err %s aq_err %s\n",
2103                                  i40e_stat_str(&pf->hw, ret),
2104                                  i40e_aq_str(&pf->hw,
2105                                              pf->hw.aq.asq_last_status));
2106         }
2107         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2108                 bool cur_promisc;
2109
2110                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2111                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2112                                         &vsi->state));
2113                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2114                         /* set defport ON for Main VSI instead of true promisc
2115                          * this way we will get all unicast/multicast and VLAN
2116                          * promisc behavior but will not get VF or VMDq traffic
2117                          * replicated on the Main VSI.
2118                          */
2119                         if (pf->cur_promisc != cur_promisc) {
2120                                 pf->cur_promisc = cur_promisc;
2121                                 if (grab_rtnl)
2122                                         i40e_do_reset_safe(pf,
2123                                                 BIT(__I40E_PF_RESET_REQUESTED));
2124                                 else
2125                                         i40e_do_reset(pf,
2126                                                 BIT(__I40E_PF_RESET_REQUESTED));
2127                         }
2128                 } else {
2129                         ret = i40e_aq_set_vsi_unicast_promiscuous(
2130                                                           &vsi->back->hw,
2131                                                           vsi->seid,
2132                                                           cur_promisc, NULL);
2133                         if (ret)
2134                                 dev_info(&pf->pdev->dev,
2135                                          "set unicast promisc failed, err %d, aq_err %d\n",
2136                                          ret, pf->hw.aq.asq_last_status);
2137                         ret = i40e_aq_set_vsi_multicast_promiscuous(
2138                                                           &vsi->back->hw,
2139                                                           vsi->seid,
2140                                                           cur_promisc, NULL);
2141                         if (ret)
2142                                 dev_info(&pf->pdev->dev,
2143                                          "set multicast promisc failed, err %d, aq_err %d\n",
2144                                          ret, pf->hw.aq.asq_last_status);
2145                 }
2146                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2147                                                 vsi->seid,
2148                                                 cur_promisc, NULL);
2149                 if (ret)
2150                         dev_info(&pf->pdev->dev,
2151                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2152                                  i40e_stat_str(&pf->hw, ret),
2153                                  i40e_aq_str(&pf->hw,
2154                                              pf->hw.aq.asq_last_status));
2155         }
2156
2157         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2158         return 0;
2159 }
2160
2161 /**
2162  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2163  * @pf: board private structure
2164  **/
2165 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2166 {
2167         int v;
2168
2169         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2170                 return;
2171         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2172
2173         for (v = 0; v < pf->num_alloc_vsi; v++) {
2174                 if (pf->vsi[v] &&
2175                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2176                         i40e_sync_vsi_filters(pf->vsi[v], true);
2177         }
2178 }
2179
2180 /**
2181  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2182  * @netdev: network interface device structure
2183  * @new_mtu: new value for maximum frame size
2184  *
2185  * Returns 0 on success, negative on failure
2186  **/
2187 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2188 {
2189         struct i40e_netdev_priv *np = netdev_priv(netdev);
2190         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2191         struct i40e_vsi *vsi = np->vsi;
2192
2193         /* MTU < 68 is an error and causes problems on some kernels */
2194         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2195                 return -EINVAL;
2196
2197         netdev_info(netdev, "changing MTU from %d to %d\n",
2198                     netdev->mtu, new_mtu);
2199         netdev->mtu = new_mtu;
2200         if (netif_running(netdev))
2201                 i40e_vsi_reinit_locked(vsi);
2202
2203         return 0;
2204 }
2205
2206 /**
2207  * i40e_ioctl - Access the hwtstamp interface
2208  * @netdev: network interface device structure
2209  * @ifr: interface request data
2210  * @cmd: ioctl command
2211  **/
2212 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2213 {
2214         struct i40e_netdev_priv *np = netdev_priv(netdev);
2215         struct i40e_pf *pf = np->vsi->back;
2216
2217         switch (cmd) {
2218         case SIOCGHWTSTAMP:
2219                 return i40e_ptp_get_ts_config(pf, ifr);
2220         case SIOCSHWTSTAMP:
2221                 return i40e_ptp_set_ts_config(pf, ifr);
2222         default:
2223                 return -EOPNOTSUPP;
2224         }
2225 }
2226
2227 /**
2228  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2229  * @vsi: the vsi being adjusted
2230  **/
2231 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2232 {
2233         struct i40e_vsi_context ctxt;
2234         i40e_status ret;
2235
2236         if ((vsi->info.valid_sections &
2237              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2238             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2239                 return;  /* already enabled */
2240
2241         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2242         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2243                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2244
2245         ctxt.seid = vsi->seid;
2246         ctxt.info = vsi->info;
2247         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2248         if (ret) {
2249                 dev_info(&vsi->back->pdev->dev,
2250                          "update vlan stripping failed, err %s aq_err %s\n",
2251                          i40e_stat_str(&vsi->back->hw, ret),
2252                          i40e_aq_str(&vsi->back->hw,
2253                                      vsi->back->hw.aq.asq_last_status));
2254         }
2255 }
2256
2257 /**
2258  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2259  * @vsi: the vsi being adjusted
2260  **/
2261 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2262 {
2263         struct i40e_vsi_context ctxt;
2264         i40e_status ret;
2265
2266         if ((vsi->info.valid_sections &
2267              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2268             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2269              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2270                 return;  /* already disabled */
2271
2272         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2274                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2275
2276         ctxt.seid = vsi->seid;
2277         ctxt.info = vsi->info;
2278         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2279         if (ret) {
2280                 dev_info(&vsi->back->pdev->dev,
2281                          "update vlan stripping failed, err %s aq_err %s\n",
2282                          i40e_stat_str(&vsi->back->hw, ret),
2283                          i40e_aq_str(&vsi->back->hw,
2284                                      vsi->back->hw.aq.asq_last_status));
2285         }
2286 }
2287
2288 /**
2289  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2290  * @netdev: network interface to be adjusted
2291  * @features: netdev features to test if VLAN offload is enabled or not
2292  **/
2293 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2294 {
2295         struct i40e_netdev_priv *np = netdev_priv(netdev);
2296         struct i40e_vsi *vsi = np->vsi;
2297
2298         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2299                 i40e_vlan_stripping_enable(vsi);
2300         else
2301                 i40e_vlan_stripping_disable(vsi);
2302 }
2303
2304 /**
2305  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2306  * @vsi: the vsi being configured
2307  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2308  **/
2309 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2310 {
2311         struct i40e_mac_filter *f, *add_f;
2312         bool is_netdev, is_vf;
2313
2314         is_vf = (vsi->type == I40E_VSI_SRIOV);
2315         is_netdev = !!(vsi->netdev);
2316
2317         /* Locked once because all functions invoked below iterates list*/
2318         spin_lock_bh(&vsi->mac_filter_list_lock);
2319
2320         if (is_netdev) {
2321                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2322                                         is_vf, is_netdev);
2323                 if (!add_f) {
2324                         dev_info(&vsi->back->pdev->dev,
2325                                  "Could not add vlan filter %d for %pM\n",
2326                                  vid, vsi->netdev->dev_addr);
2327                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2328                         return -ENOMEM;
2329                 }
2330         }
2331
2332         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2333                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2334                 if (!add_f) {
2335                         dev_info(&vsi->back->pdev->dev,
2336                                  "Could not add vlan filter %d for %pM\n",
2337                                  vid, f->macaddr);
2338                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2339                         return -ENOMEM;
2340                 }
2341         }
2342
2343         /* Now if we add a vlan tag, make sure to check if it is the first
2344          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2345          * with 0, so we now accept untagged and specified tagged traffic
2346          * (and not any taged and untagged)
2347          */
2348         if (vid > 0) {
2349                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2350                                                   I40E_VLAN_ANY,
2351                                                   is_vf, is_netdev)) {
2352                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2353                                         I40E_VLAN_ANY, is_vf, is_netdev);
2354                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2355                                                 is_vf, is_netdev);
2356                         if (!add_f) {
2357                                 dev_info(&vsi->back->pdev->dev,
2358                                          "Could not add filter 0 for %pM\n",
2359                                          vsi->netdev->dev_addr);
2360                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2361                                 return -ENOMEM;
2362                         }
2363                 }
2364         }
2365
2366         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2367         if (vid > 0 && !vsi->info.pvid) {
2368                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2369                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2370                                               is_vf, is_netdev))
2371                                 continue;
2372                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2373                                         is_vf, is_netdev);
2374                         add_f = i40e_add_filter(vsi, f->macaddr,
2375                                                 0, is_vf, is_netdev);
2376                         if (!add_f) {
2377                                 dev_info(&vsi->back->pdev->dev,
2378                                          "Could not add filter 0 for %pM\n",
2379                                         f->macaddr);
2380                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2381                                 return -ENOMEM;
2382                         }
2383                 }
2384         }
2385
2386         /* Make sure to release before sync_vsi_filter because that
2387          * function will lock/unlock as necessary
2388          */
2389         spin_unlock_bh(&vsi->mac_filter_list_lock);
2390
2391         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2392             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2393                 return 0;
2394
2395         return i40e_sync_vsi_filters(vsi, false);
2396 }
2397
2398 /**
2399  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2400  * @vsi: the vsi being configured
2401  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2402  *
2403  * Return: 0 on success or negative otherwise
2404  **/
2405 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2406 {
2407         struct net_device *netdev = vsi->netdev;
2408         struct i40e_mac_filter *f, *add_f;
2409         bool is_vf, is_netdev;
2410         int filter_count = 0;
2411
2412         is_vf = (vsi->type == I40E_VSI_SRIOV);
2413         is_netdev = !!(netdev);
2414
2415         /* Locked once because all functions invoked below iterates list */
2416         spin_lock_bh(&vsi->mac_filter_list_lock);
2417
2418         if (is_netdev)
2419                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2420
2421         list_for_each_entry(f, &vsi->mac_filter_list, list)
2422                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2423
2424         /* go through all the filters for this VSI and if there is only
2425          * vid == 0 it means there are no other filters, so vid 0 must
2426          * be replaced with -1. This signifies that we should from now
2427          * on accept any traffic (with any tag present, or untagged)
2428          */
2429         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2430                 if (is_netdev) {
2431                         if (f->vlan &&
2432                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2433                                 filter_count++;
2434                 }
2435
2436                 if (f->vlan)
2437                         filter_count++;
2438         }
2439
2440         if (!filter_count && is_netdev) {
2441                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2442                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2443                                     is_vf, is_netdev);
2444                 if (!f) {
2445                         dev_info(&vsi->back->pdev->dev,
2446                                  "Could not add filter %d for %pM\n",
2447                                  I40E_VLAN_ANY, netdev->dev_addr);
2448                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2449                         return -ENOMEM;
2450                 }
2451         }
2452
2453         if (!filter_count) {
2454                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2455                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2456                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2457                                                 is_vf, is_netdev);
2458                         if (!add_f) {
2459                                 dev_info(&vsi->back->pdev->dev,
2460                                          "Could not add filter %d for %pM\n",
2461                                          I40E_VLAN_ANY, f->macaddr);
2462                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2463                                 return -ENOMEM;
2464                         }
2465                 }
2466         }
2467
2468         /* Make sure to release before sync_vsi_filter because that
2469          * function with lock/unlock as necessary
2470          */
2471         spin_unlock_bh(&vsi->mac_filter_list_lock);
2472
2473         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2474             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2475                 return 0;
2476
2477         return i40e_sync_vsi_filters(vsi, false);
2478 }
2479
2480 /**
2481  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2482  * @netdev: network interface to be adjusted
2483  * @vid: vlan id to be added
2484  *
2485  * net_device_ops implementation for adding vlan ids
2486  **/
2487 #ifdef I40E_FCOE
2488 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2489                          __always_unused __be16 proto, u16 vid)
2490 #else
2491 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2492                                 __always_unused __be16 proto, u16 vid)
2493 #endif
2494 {
2495         struct i40e_netdev_priv *np = netdev_priv(netdev);
2496         struct i40e_vsi *vsi = np->vsi;
2497         int ret = 0;
2498
2499         if (vid > 4095)
2500                 return -EINVAL;
2501
2502         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2503
2504         /* If the network stack called us with vid = 0 then
2505          * it is asking to receive priority tagged packets with
2506          * vlan id 0.  Our HW receives them by default when configured
2507          * to receive untagged packets so there is no need to add an
2508          * extra filter for vlan 0 tagged packets.
2509          */
2510         if (vid)
2511                 ret = i40e_vsi_add_vlan(vsi, vid);
2512
2513         if (!ret && (vid < VLAN_N_VID))
2514                 set_bit(vid, vsi->active_vlans);
2515
2516         return ret;
2517 }
2518
2519 /**
2520  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2521  * @netdev: network interface to be adjusted
2522  * @vid: vlan id to be removed
2523  *
2524  * net_device_ops implementation for removing vlan ids
2525  **/
2526 #ifdef I40E_FCOE
2527 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2528                           __always_unused __be16 proto, u16 vid)
2529 #else
2530 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2531                                  __always_unused __be16 proto, u16 vid)
2532 #endif
2533 {
2534         struct i40e_netdev_priv *np = netdev_priv(netdev);
2535         struct i40e_vsi *vsi = np->vsi;
2536
2537         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2538
2539         /* return code is ignored as there is nothing a user
2540          * can do about failure to remove and a log message was
2541          * already printed from the other function
2542          */
2543         i40e_vsi_kill_vlan(vsi, vid);
2544
2545         clear_bit(vid, vsi->active_vlans);
2546
2547         return 0;
2548 }
2549
2550 /**
2551  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2552  * @vsi: the vsi being brought back up
2553  **/
2554 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2555 {
2556         u16 vid;
2557
2558         if (!vsi->netdev)
2559                 return;
2560
2561         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2562
2563         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2564                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2565                                      vid);
2566 }
2567
2568 /**
2569  * i40e_vsi_add_pvid - Add pvid for the VSI
2570  * @vsi: the vsi being adjusted
2571  * @vid: the vlan id to set as a PVID
2572  **/
2573 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2574 {
2575         struct i40e_vsi_context ctxt;
2576         i40e_status ret;
2577
2578         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2579         vsi->info.pvid = cpu_to_le16(vid);
2580         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2581                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2582                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2583
2584         ctxt.seid = vsi->seid;
2585         ctxt.info = vsi->info;
2586         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2587         if (ret) {
2588                 dev_info(&vsi->back->pdev->dev,
2589                          "add pvid failed, err %s aq_err %s\n",
2590                          i40e_stat_str(&vsi->back->hw, ret),
2591                          i40e_aq_str(&vsi->back->hw,
2592                                      vsi->back->hw.aq.asq_last_status));
2593                 return -ENOENT;
2594         }
2595
2596         return 0;
2597 }
2598
2599 /**
2600  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2601  * @vsi: the vsi being adjusted
2602  *
2603  * Just use the vlan_rx_register() service to put it back to normal
2604  **/
2605 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2606 {
2607         i40e_vlan_stripping_disable(vsi);
2608
2609         vsi->info.pvid = 0;
2610 }
2611
2612 /**
2613  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2614  * @vsi: ptr to the VSI
2615  *
2616  * If this function returns with an error, then it's possible one or
2617  * more of the rings is populated (while the rest are not).  It is the
2618  * callers duty to clean those orphaned rings.
2619  *
2620  * Return 0 on success, negative on failure
2621  **/
2622 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2623 {
2624         int i, err = 0;
2625
2626         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2627                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2628
2629         return err;
2630 }
2631
2632 /**
2633  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2634  * @vsi: ptr to the VSI
2635  *
2636  * Free VSI's transmit software resources
2637  **/
2638 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2639 {
2640         int i;
2641
2642         if (!vsi->tx_rings)
2643                 return;
2644
2645         for (i = 0; i < vsi->num_queue_pairs; i++)
2646                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2647                         i40e_free_tx_resources(vsi->tx_rings[i]);
2648 }
2649
2650 /**
2651  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2652  * @vsi: ptr to the VSI
2653  *
2654  * If this function returns with an error, then it's possible one or
2655  * more of the rings is populated (while the rest are not).  It is the
2656  * callers duty to clean those orphaned rings.
2657  *
2658  * Return 0 on success, negative on failure
2659  **/
2660 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2661 {
2662         int i, err = 0;
2663
2664         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2665                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2666 #ifdef I40E_FCOE
2667         i40e_fcoe_setup_ddp_resources(vsi);
2668 #endif
2669         return err;
2670 }
2671
2672 /**
2673  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2674  * @vsi: ptr to the VSI
2675  *
2676  * Free all receive software resources
2677  **/
2678 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2679 {
2680         int i;
2681
2682         if (!vsi->rx_rings)
2683                 return;
2684
2685         for (i = 0; i < vsi->num_queue_pairs; i++)
2686                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2687                         i40e_free_rx_resources(vsi->rx_rings[i]);
2688 #ifdef I40E_FCOE
2689         i40e_fcoe_free_ddp_resources(vsi);
2690 #endif
2691 }
2692
2693 /**
2694  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2695  * @ring: The Tx ring to configure
2696  *
2697  * This enables/disables XPS for a given Tx descriptor ring
2698  * based on the TCs enabled for the VSI that ring belongs to.
2699  **/
2700 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2701 {
2702         struct i40e_vsi *vsi = ring->vsi;
2703         cpumask_var_t mask;
2704
2705         if (!ring->q_vector || !ring->netdev)
2706                 return;
2707
2708         /* Single TC mode enable XPS */
2709         if (vsi->tc_config.numtc <= 1) {
2710                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2711                         netif_set_xps_queue(ring->netdev,
2712                                             &ring->q_vector->affinity_mask,
2713                                             ring->queue_index);
2714         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2715                 /* Disable XPS to allow selection based on TC */
2716                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2717                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2718                 free_cpumask_var(mask);
2719         }
2720 }
2721
2722 /**
2723  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2724  * @ring: The Tx ring to configure
2725  *
2726  * Configure the Tx descriptor ring in the HMC context.
2727  **/
2728 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2729 {
2730         struct i40e_vsi *vsi = ring->vsi;
2731         u16 pf_q = vsi->base_queue + ring->queue_index;
2732         struct i40e_hw *hw = &vsi->back->hw;
2733         struct i40e_hmc_obj_txq tx_ctx;
2734         i40e_status err = 0;
2735         u32 qtx_ctl = 0;
2736
2737         /* some ATR related tx ring init */
2738         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2739                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2740                 ring->atr_count = 0;
2741         } else {
2742                 ring->atr_sample_rate = 0;
2743         }
2744
2745         /* configure XPS */
2746         i40e_config_xps_tx_ring(ring);
2747
2748         /* clear the context structure first */
2749         memset(&tx_ctx, 0, sizeof(tx_ctx));
2750
2751         tx_ctx.new_context = 1;
2752         tx_ctx.base = (ring->dma / 128);
2753         tx_ctx.qlen = ring->count;
2754         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2755                                                I40E_FLAG_FD_ATR_ENABLED));
2756 #ifdef I40E_FCOE
2757         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2758 #endif
2759         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2760         /* FDIR VSI tx ring can still use RS bit and writebacks */
2761         if (vsi->type != I40E_VSI_FDIR)
2762                 tx_ctx.head_wb_ena = 1;
2763         tx_ctx.head_wb_addr = ring->dma +
2764                               (ring->count * sizeof(struct i40e_tx_desc));
2765
2766         /* As part of VSI creation/update, FW allocates certain
2767          * Tx arbitration queue sets for each TC enabled for
2768          * the VSI. The FW returns the handles to these queue
2769          * sets as part of the response buffer to Add VSI,
2770          * Update VSI, etc. AQ commands. It is expected that
2771          * these queue set handles be associated with the Tx
2772          * queues by the driver as part of the TX queue context
2773          * initialization. This has to be done regardless of
2774          * DCB as by default everything is mapped to TC0.
2775          */
2776         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2777         tx_ctx.rdylist_act = 0;
2778
2779         /* clear the context in the HMC */
2780         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2781         if (err) {
2782                 dev_info(&vsi->back->pdev->dev,
2783                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2784                          ring->queue_index, pf_q, err);
2785                 return -ENOMEM;
2786         }
2787
2788         /* set the context in the HMC */
2789         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2790         if (err) {
2791                 dev_info(&vsi->back->pdev->dev,
2792                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2793                          ring->queue_index, pf_q, err);
2794                 return -ENOMEM;
2795         }
2796
2797         /* Now associate this queue with this PCI function */
2798         if (vsi->type == I40E_VSI_VMDQ2) {
2799                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2800                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2801                            I40E_QTX_CTL_VFVM_INDX_MASK;
2802         } else {
2803                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2804         }
2805
2806         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2807                     I40E_QTX_CTL_PF_INDX_MASK);
2808         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2809         i40e_flush(hw);
2810
2811         /* cache tail off for easier writes later */
2812         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2813
2814         return 0;
2815 }
2816
2817 /**
2818  * i40e_configure_rx_ring - Configure a receive ring context
2819  * @ring: The Rx ring to configure
2820  *
2821  * Configure the Rx descriptor ring in the HMC context.
2822  **/
2823 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2824 {
2825         struct i40e_vsi *vsi = ring->vsi;
2826         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2827         u16 pf_q = vsi->base_queue + ring->queue_index;
2828         struct i40e_hw *hw = &vsi->back->hw;
2829         struct i40e_hmc_obj_rxq rx_ctx;
2830         i40e_status err = 0;
2831
2832         ring->state = 0;
2833
2834         /* clear the context structure first */
2835         memset(&rx_ctx, 0, sizeof(rx_ctx));
2836
2837         ring->rx_buf_len = vsi->rx_buf_len;
2838         ring->rx_hdr_len = vsi->rx_hdr_len;
2839
2840         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2841         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2842
2843         rx_ctx.base = (ring->dma / 128);
2844         rx_ctx.qlen = ring->count;
2845
2846         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2847                 set_ring_16byte_desc_enabled(ring);
2848                 rx_ctx.dsize = 0;
2849         } else {
2850                 rx_ctx.dsize = 1;
2851         }
2852
2853         rx_ctx.dtype = vsi->dtype;
2854         if (vsi->dtype) {
2855                 set_ring_ps_enabled(ring);
2856                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2857                                   I40E_RX_SPLIT_IP      |
2858                                   I40E_RX_SPLIT_TCP_UDP |
2859                                   I40E_RX_SPLIT_SCTP;
2860         } else {
2861                 rx_ctx.hsplit_0 = 0;
2862         }
2863
2864         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2865                                   (chain_len * ring->rx_buf_len));
2866         if (hw->revision_id == 0)
2867                 rx_ctx.lrxqthresh = 0;
2868         else
2869                 rx_ctx.lrxqthresh = 2;
2870         rx_ctx.crcstrip = 1;
2871         rx_ctx.l2tsel = 1;
2872         /* this controls whether VLAN is stripped from inner headers */
2873         rx_ctx.showiv = 0;
2874 #ifdef I40E_FCOE
2875         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2876 #endif
2877         /* set the prefena field to 1 because the manual says to */
2878         rx_ctx.prefena = 1;
2879
2880         /* clear the context in the HMC */
2881         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2882         if (err) {
2883                 dev_info(&vsi->back->pdev->dev,
2884                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2885                          ring->queue_index, pf_q, err);
2886                 return -ENOMEM;
2887         }
2888
2889         /* set the context in the HMC */
2890         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2891         if (err) {
2892                 dev_info(&vsi->back->pdev->dev,
2893                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2894                          ring->queue_index, pf_q, err);
2895                 return -ENOMEM;
2896         }
2897
2898         /* cache tail for quicker writes, and clear the reg before use */
2899         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2900         writel(0, ring->tail);
2901
2902         if (ring_is_ps_enabled(ring)) {
2903                 i40e_alloc_rx_headers(ring);
2904                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2905         } else {
2906                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2907         }
2908
2909         return 0;
2910 }
2911
2912 /**
2913  * i40e_vsi_configure_tx - Configure the VSI for Tx
2914  * @vsi: VSI structure describing this set of rings and resources
2915  *
2916  * Configure the Tx VSI for operation.
2917  **/
2918 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2919 {
2920         int err = 0;
2921         u16 i;
2922
2923         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2924                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2925
2926         return err;
2927 }
2928
2929 /**
2930  * i40e_vsi_configure_rx - Configure the VSI for Rx
2931  * @vsi: the VSI being configured
2932  *
2933  * Configure the Rx VSI for operation.
2934  **/
2935 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2936 {
2937         int err = 0;
2938         u16 i;
2939
2940         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2941                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2942                                + ETH_FCS_LEN + VLAN_HLEN;
2943         else
2944                 vsi->max_frame = I40E_RXBUFFER_2048;
2945
2946         /* figure out correct receive buffer length */
2947         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2948                                     I40E_FLAG_RX_PS_ENABLED)) {
2949         case I40E_FLAG_RX_1BUF_ENABLED:
2950                 vsi->rx_hdr_len = 0;
2951                 vsi->rx_buf_len = vsi->max_frame;
2952                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2953                 break;
2954         case I40E_FLAG_RX_PS_ENABLED:
2955                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2956                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2957                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2958                 break;
2959         default:
2960                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2961                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2962                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2963                 break;
2964         }
2965
2966 #ifdef I40E_FCOE
2967         /* setup rx buffer for FCoE */
2968         if ((vsi->type == I40E_VSI_FCOE) &&
2969             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2970                 vsi->rx_hdr_len = 0;
2971                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2972                 vsi->max_frame = I40E_RXBUFFER_3072;
2973                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2974         }
2975
2976 #endif /* I40E_FCOE */
2977         /* round up for the chip's needs */
2978         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2979                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2980         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2981                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2982
2983         /* set up individual rings */
2984         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2985                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2986
2987         return err;
2988 }
2989
2990 /**
2991  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2992  * @vsi: ptr to the VSI
2993  **/
2994 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2995 {
2996         struct i40e_ring *tx_ring, *rx_ring;
2997         u16 qoffset, qcount;
2998         int i, n;
2999
3000         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3001                 /* Reset the TC information */
3002                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3003                         rx_ring = vsi->rx_rings[i];
3004                         tx_ring = vsi->tx_rings[i];
3005                         rx_ring->dcb_tc = 0;
3006                         tx_ring->dcb_tc = 0;
3007                 }
3008         }
3009
3010         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3011                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3012                         continue;
3013
3014                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3015                 qcount = vsi->tc_config.tc_info[n].qcount;
3016                 for (i = qoffset; i < (qoffset + qcount); i++) {
3017                         rx_ring = vsi->rx_rings[i];
3018                         tx_ring = vsi->tx_rings[i];
3019                         rx_ring->dcb_tc = n;
3020                         tx_ring->dcb_tc = n;
3021                 }
3022         }
3023 }
3024
3025 /**
3026  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3027  * @vsi: ptr to the VSI
3028  **/
3029 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3030 {
3031         if (vsi->netdev)
3032                 i40e_set_rx_mode(vsi->netdev);
3033 }
3034
3035 /**
3036  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3037  * @vsi: Pointer to the targeted VSI
3038  *
3039  * This function replays the hlist on the hw where all the SB Flow Director
3040  * filters were saved.
3041  **/
3042 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3043 {
3044         struct i40e_fdir_filter *filter;
3045         struct i40e_pf *pf = vsi->back;
3046         struct hlist_node *node;
3047
3048         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3049                 return;
3050
3051         hlist_for_each_entry_safe(filter, node,
3052                                   &pf->fdir_filter_list, fdir_node) {
3053                 i40e_add_del_fdir(vsi, filter, true);
3054         }
3055 }
3056
3057 /**
3058  * i40e_vsi_configure - Set up the VSI for action
3059  * @vsi: the VSI being configured
3060  **/
3061 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3062 {
3063         int err;
3064
3065         i40e_set_vsi_rx_mode(vsi);
3066         i40e_restore_vlan(vsi);
3067         i40e_vsi_config_dcb_rings(vsi);
3068         err = i40e_vsi_configure_tx(vsi);
3069         if (!err)
3070                 err = i40e_vsi_configure_rx(vsi);
3071
3072         return err;
3073 }
3074
3075 /**
3076  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3077  * @vsi: the VSI being configured
3078  **/
3079 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3080 {
3081         struct i40e_pf *pf = vsi->back;
3082         struct i40e_hw *hw = &pf->hw;
3083         u16 vector;
3084         int i, q;
3085         u32 qp;
3086
3087         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3088          * and PFINT_LNKLSTn registers, e.g.:
3089          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3090          */
3091         qp = vsi->base_queue;
3092         vector = vsi->base_vector;
3093         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3094                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3095
3096                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3097                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3098                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3099                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3100                      q_vector->rx.itr);
3101                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3102                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3103                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3104                      q_vector->tx.itr);
3105                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3106                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3107
3108                 /* Linked list for the queuepairs assigned to this vector */
3109                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3110                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3111                         u32 val;
3112
3113                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3114                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3115                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3116                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3117                               (I40E_QUEUE_TYPE_TX
3118                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3119
3120                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3121
3122                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3123                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3124                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3125                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3126                               (I40E_QUEUE_TYPE_RX
3127                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3128
3129                         /* Terminate the linked list */
3130                         if (q == (q_vector->num_ringpairs - 1))
3131                                 val |= (I40E_QUEUE_END_OF_LIST
3132                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3133
3134                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3135                         qp++;
3136                 }
3137         }
3138
3139         i40e_flush(hw);
3140 }
3141
3142 /**
3143  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3144  * @hw: ptr to the hardware info
3145  **/
3146 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3147 {
3148         struct i40e_hw *hw = &pf->hw;
3149         u32 val;
3150
3151         /* clear things first */
3152         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3153         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3154
3155         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3156               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3157               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3158               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3159               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3160               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3161               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3162               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3163
3164         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3165                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3166
3167         if (pf->flags & I40E_FLAG_PTP)
3168                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3169
3170         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3171
3172         /* SW_ITR_IDX = 0, but don't change INTENA */
3173         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3174                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3175
3176         /* OTHER_ITR_IDX = 0 */
3177         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3178 }
3179
3180 /**
3181  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3182  * @vsi: the VSI being configured
3183  **/
3184 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3185 {
3186         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3187         struct i40e_pf *pf = vsi->back;
3188         struct i40e_hw *hw = &pf->hw;
3189         u32 val;
3190
3191         /* set the ITR configuration */
3192         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3193         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3194         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3195         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3196         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3197         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3198         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3199
3200         i40e_enable_misc_int_causes(pf);
3201
3202         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3203         wr32(hw, I40E_PFINT_LNKLST0, 0);
3204
3205         /* Associate the queue pair to the vector and enable the queue int */
3206         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3207               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3208               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3209
3210         wr32(hw, I40E_QINT_RQCTL(0), val);
3211
3212         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3213               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3214               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3215
3216         wr32(hw, I40E_QINT_TQCTL(0), val);
3217         i40e_flush(hw);
3218 }
3219
3220 /**
3221  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3222  * @pf: board private structure
3223  **/
3224 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3225 {
3226         struct i40e_hw *hw = &pf->hw;
3227
3228         wr32(hw, I40E_PFINT_DYN_CTL0,
3229              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3230         i40e_flush(hw);
3231 }
3232
3233 /**
3234  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3235  * @pf: board private structure
3236  **/
3237 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3238 {
3239         struct i40e_hw *hw = &pf->hw;
3240         u32 val;
3241
3242         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3243               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3244               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3245
3246         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3247         i40e_flush(hw);
3248 }
3249
3250 /**
3251  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3252  * @vsi: pointer to a vsi
3253  * @vector: disable a particular Hw Interrupt vector
3254  **/
3255 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3256 {
3257         struct i40e_pf *pf = vsi->back;
3258         struct i40e_hw *hw = &pf->hw;
3259         u32 val;
3260
3261         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3262         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3263         i40e_flush(hw);
3264 }
3265
3266 /**
3267  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3268  * @irq: interrupt number
3269  * @data: pointer to a q_vector
3270  **/
3271 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3272 {
3273         struct i40e_q_vector *q_vector = data;
3274
3275         if (!q_vector->tx.ring && !q_vector->rx.ring)
3276                 return IRQ_HANDLED;
3277
3278         napi_schedule_irqoff(&q_vector->napi);
3279
3280         return IRQ_HANDLED;
3281 }
3282
3283 /**
3284  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3285  * @vsi: the VSI being configured
3286  * @basename: name for the vector
3287  *
3288  * Allocates MSI-X vectors and requests interrupts from the kernel.
3289  **/
3290 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3291 {
3292         int q_vectors = vsi->num_q_vectors;
3293         struct i40e_pf *pf = vsi->back;
3294         int base = vsi->base_vector;
3295         int rx_int_idx = 0;
3296         int tx_int_idx = 0;
3297         int vector, err;
3298
3299         for (vector = 0; vector < q_vectors; vector++) {
3300                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3301
3302                 if (q_vector->tx.ring && q_vector->rx.ring) {
3303                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3304                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3305                         tx_int_idx++;
3306                 } else if (q_vector->rx.ring) {
3307                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3308                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3309                 } else if (q_vector->tx.ring) {
3310                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3311                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3312                 } else {
3313                         /* skip this unused q_vector */
3314                         continue;
3315                 }
3316                 err = request_irq(pf->msix_entries[base + vector].vector,
3317                                   vsi->irq_handler,
3318                                   0,
3319                                   q_vector->name,
3320                                   q_vector);
3321                 if (err) {
3322                         dev_info(&pf->pdev->dev,
3323                                  "MSIX request_irq failed, error: %d\n", err);
3324                         goto free_queue_irqs;
3325                 }
3326                 /* assign the mask for this irq */
3327                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3328                                       &q_vector->affinity_mask);
3329         }
3330
3331         vsi->irqs_ready = true;
3332         return 0;
3333
3334 free_queue_irqs:
3335         while (vector) {
3336                 vector--;
3337                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3338                                       NULL);
3339                 free_irq(pf->msix_entries[base + vector].vector,
3340                          &(vsi->q_vectors[vector]));
3341         }
3342         return err;
3343 }
3344
3345 /**
3346  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3347  * @vsi: the VSI being un-configured
3348  **/
3349 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3350 {
3351         struct i40e_pf *pf = vsi->back;
3352         struct i40e_hw *hw = &pf->hw;
3353         int base = vsi->base_vector;
3354         int i;
3355
3356         for (i = 0; i < vsi->num_queue_pairs; i++) {
3357                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3358                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3359         }
3360
3361         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3362                 for (i = vsi->base_vector;
3363                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3364                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3365
3366                 i40e_flush(hw);
3367                 for (i = 0; i < vsi->num_q_vectors; i++)
3368                         synchronize_irq(pf->msix_entries[i + base].vector);
3369         } else {
3370                 /* Legacy and MSI mode - this stops all interrupt handling */
3371                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3372                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3373                 i40e_flush(hw);
3374                 synchronize_irq(pf->pdev->irq);
3375         }
3376 }
3377
3378 /**
3379  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3380  * @vsi: the VSI being configured
3381  **/
3382 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3383 {
3384         struct i40e_pf *pf = vsi->back;
3385         int i;
3386
3387         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3388                 for (i = 0; i < vsi->num_q_vectors; i++)
3389                         i40e_irq_dynamic_enable(vsi, i);
3390         } else {
3391                 i40e_irq_dynamic_enable_icr0(pf);
3392         }
3393
3394         i40e_flush(&pf->hw);
3395         return 0;
3396 }
3397
3398 /**
3399  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3400  * @pf: board private structure
3401  **/
3402 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3403 {
3404         /* Disable ICR 0 */
3405         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3406         i40e_flush(&pf->hw);
3407 }
3408
3409 /**
3410  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3411  * @irq: interrupt number
3412  * @data: pointer to a q_vector
3413  *
3414  * This is the handler used for all MSI/Legacy interrupts, and deals
3415  * with both queue and non-queue interrupts.  This is also used in
3416  * MSIX mode to handle the non-queue interrupts.
3417  **/
3418 static irqreturn_t i40e_intr(int irq, void *data)
3419 {
3420         struct i40e_pf *pf = (struct i40e_pf *)data;
3421         struct i40e_hw *hw = &pf->hw;
3422         irqreturn_t ret = IRQ_NONE;
3423         u32 icr0, icr0_remaining;
3424         u32 val, ena_mask;
3425
3426         icr0 = rd32(hw, I40E_PFINT_ICR0);
3427         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3428
3429         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3430         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3431                 goto enable_intr;
3432
3433         /* if interrupt but no bits showing, must be SWINT */
3434         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3435             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3436                 pf->sw_int_count++;
3437
3438         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3439             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3440                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3441                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3442                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3443         }
3444
3445         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3446         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3447                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3448                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3449
3450                 /* temporarily disable queue cause for NAPI processing */
3451                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3452
3453                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3454                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3455
3456                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3457                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3458                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3459
3460                 if (!test_bit(__I40E_DOWN, &pf->state))
3461                         napi_schedule_irqoff(&q_vector->napi);
3462         }
3463
3464         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3465                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3466                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3467         }
3468
3469         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3470                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3471                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3472         }
3473
3474         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3475                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3476                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3477         }
3478
3479         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3480                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3481                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3482                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3483                 val = rd32(hw, I40E_GLGEN_RSTAT);
3484                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3485                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3486                 if (val == I40E_RESET_CORER) {
3487                         pf->corer_count++;
3488                 } else if (val == I40E_RESET_GLOBR) {
3489                         pf->globr_count++;
3490                 } else if (val == I40E_RESET_EMPR) {
3491                         pf->empr_count++;
3492                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3493                 }
3494         }
3495
3496         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3497                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3498                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3499                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3500                          rd32(hw, I40E_PFHMC_ERRORINFO),
3501                          rd32(hw, I40E_PFHMC_ERRORDATA));
3502         }
3503
3504         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3505                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3506
3507                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3508                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3509                         i40e_ptp_tx_hwtstamp(pf);
3510                 }
3511         }
3512
3513         /* If a critical error is pending we have no choice but to reset the
3514          * device.
3515          * Report and mask out any remaining unexpected interrupts.
3516          */
3517         icr0_remaining = icr0 & ena_mask;
3518         if (icr0_remaining) {
3519                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3520                          icr0_remaining);
3521                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3522                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3523                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3524                         dev_info(&pf->pdev->dev, "device will be reset\n");
3525                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3526                         i40e_service_event_schedule(pf);
3527                 }
3528                 ena_mask &= ~icr0_remaining;
3529         }
3530         ret = IRQ_HANDLED;
3531
3532 enable_intr:
3533         /* re-enable interrupt causes */
3534         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3535         if (!test_bit(__I40E_DOWN, &pf->state)) {
3536                 i40e_service_event_schedule(pf);
3537                 i40e_irq_dynamic_enable_icr0(pf);
3538         }
3539
3540         return ret;
3541 }
3542
3543 /**
3544  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3545  * @tx_ring:  tx ring to clean
3546  * @budget:   how many cleans we're allowed
3547  *
3548  * Returns true if there's any budget left (e.g. the clean is finished)
3549  **/
3550 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3551 {
3552         struct i40e_vsi *vsi = tx_ring->vsi;
3553         u16 i = tx_ring->next_to_clean;
3554         struct i40e_tx_buffer *tx_buf;
3555         struct i40e_tx_desc *tx_desc;
3556
3557         tx_buf = &tx_ring->tx_bi[i];
3558         tx_desc = I40E_TX_DESC(tx_ring, i);
3559         i -= tx_ring->count;
3560
3561         do {
3562                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3563
3564                 /* if next_to_watch is not set then there is no work pending */
3565                 if (!eop_desc)
3566                         break;
3567
3568                 /* prevent any other reads prior to eop_desc */
3569                 read_barrier_depends();
3570
3571                 /* if the descriptor isn't done, no work yet to do */
3572                 if (!(eop_desc->cmd_type_offset_bsz &
3573                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3574                         break;
3575
3576                 /* clear next_to_watch to prevent false hangs */
3577                 tx_buf->next_to_watch = NULL;
3578
3579                 tx_desc->buffer_addr = 0;
3580                 tx_desc->cmd_type_offset_bsz = 0;
3581                 /* move past filter desc */
3582                 tx_buf++;
3583                 tx_desc++;
3584                 i++;
3585                 if (unlikely(!i)) {
3586                         i -= tx_ring->count;
3587                         tx_buf = tx_ring->tx_bi;
3588                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3589                 }
3590                 /* unmap skb header data */
3591                 dma_unmap_single(tx_ring->dev,
3592                                  dma_unmap_addr(tx_buf, dma),
3593                                  dma_unmap_len(tx_buf, len),
3594                                  DMA_TO_DEVICE);
3595                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3596                         kfree(tx_buf->raw_buf);
3597
3598                 tx_buf->raw_buf = NULL;
3599                 tx_buf->tx_flags = 0;
3600                 tx_buf->next_to_watch = NULL;
3601                 dma_unmap_len_set(tx_buf, len, 0);
3602                 tx_desc->buffer_addr = 0;
3603                 tx_desc->cmd_type_offset_bsz = 0;
3604
3605                 /* move us past the eop_desc for start of next FD desc */
3606                 tx_buf++;
3607                 tx_desc++;
3608                 i++;
3609                 if (unlikely(!i)) {
3610                         i -= tx_ring->count;
3611                         tx_buf = tx_ring->tx_bi;
3612                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3613                 }
3614
3615                 /* update budget accounting */
3616                 budget--;
3617         } while (likely(budget));
3618
3619         i += tx_ring->count;
3620         tx_ring->next_to_clean = i;
3621
3622         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3623                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3624
3625         return budget > 0;
3626 }
3627
3628 /**
3629  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3630  * @irq: interrupt number
3631  * @data: pointer to a q_vector
3632  **/
3633 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3634 {
3635         struct i40e_q_vector *q_vector = data;
3636         struct i40e_vsi *vsi;
3637
3638         if (!q_vector->tx.ring)
3639                 return IRQ_HANDLED;
3640
3641         vsi = q_vector->tx.ring->vsi;
3642         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3643
3644         return IRQ_HANDLED;
3645 }
3646
3647 /**
3648  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3649  * @vsi: the VSI being configured
3650  * @v_idx: vector index
3651  * @qp_idx: queue pair index
3652  **/
3653 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3654 {
3655         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3656         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3657         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3658
3659         tx_ring->q_vector = q_vector;
3660         tx_ring->next = q_vector->tx.ring;
3661         q_vector->tx.ring = tx_ring;
3662         q_vector->tx.count++;
3663
3664         rx_ring->q_vector = q_vector;
3665         rx_ring->next = q_vector->rx.ring;
3666         q_vector->rx.ring = rx_ring;
3667         q_vector->rx.count++;
3668 }
3669
3670 /**
3671  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3672  * @vsi: the VSI being configured
3673  *
3674  * This function maps descriptor rings to the queue-specific vectors
3675  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3676  * one vector per queue pair, but on a constrained vector budget, we
3677  * group the queue pairs as "efficiently" as possible.
3678  **/
3679 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3680 {
3681         int qp_remaining = vsi->num_queue_pairs;
3682         int q_vectors = vsi->num_q_vectors;
3683         int num_ringpairs;
3684         int v_start = 0;
3685         int qp_idx = 0;
3686
3687         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3688          * group them so there are multiple queues per vector.
3689          * It is also important to go through all the vectors available to be
3690          * sure that if we don't use all the vectors, that the remaining vectors
3691          * are cleared. This is especially important when decreasing the
3692          * number of queues in use.
3693          */
3694         for (; v_start < q_vectors; v_start++) {
3695                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3696
3697                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3698
3699                 q_vector->num_ringpairs = num_ringpairs;
3700
3701                 q_vector->rx.count = 0;
3702                 q_vector->tx.count = 0;
3703                 q_vector->rx.ring = NULL;
3704                 q_vector->tx.ring = NULL;
3705
3706                 while (num_ringpairs--) {
3707                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3708                         qp_idx++;
3709                         qp_remaining--;
3710                 }
3711         }
3712 }
3713
3714 /**
3715  * i40e_vsi_request_irq - Request IRQ from the OS
3716  * @vsi: the VSI being configured
3717  * @basename: name for the vector
3718  **/
3719 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3720 {
3721         struct i40e_pf *pf = vsi->back;
3722         int err;
3723
3724         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3725                 err = i40e_vsi_request_irq_msix(vsi, basename);
3726         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3727                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3728                                   pf->int_name, pf);
3729         else
3730                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3731                                   pf->int_name, pf);
3732
3733         if (err)
3734                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3735
3736         return err;
3737 }
3738
3739 #ifdef CONFIG_NET_POLL_CONTROLLER
3740 /**
3741  * i40e_netpoll - A Polling 'interrupt'handler
3742  * @netdev: network interface device structure
3743  *
3744  * This is used by netconsole to send skbs without having to re-enable
3745  * interrupts.  It's not called while the normal interrupt routine is executing.
3746  **/
3747 #ifdef I40E_FCOE
3748 void i40e_netpoll(struct net_device *netdev)
3749 #else
3750 static void i40e_netpoll(struct net_device *netdev)
3751 #endif
3752 {
3753         struct i40e_netdev_priv *np = netdev_priv(netdev);
3754         struct i40e_vsi *vsi = np->vsi;
3755         struct i40e_pf *pf = vsi->back;
3756         int i;
3757
3758         /* if interface is down do nothing */
3759         if (test_bit(__I40E_DOWN, &vsi->state))
3760                 return;
3761
3762         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3763                 for (i = 0; i < vsi->num_q_vectors; i++)
3764                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3765         } else {
3766                 i40e_intr(pf->pdev->irq, netdev);
3767         }
3768 }
3769 #endif
3770
3771 /**
3772  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3773  * @pf: the PF being configured
3774  * @pf_q: the PF queue
3775  * @enable: enable or disable state of the queue
3776  *
3777  * This routine will wait for the given Tx queue of the PF to reach the
3778  * enabled or disabled state.
3779  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3780  * multiple retries; else will return 0 in case of success.
3781  **/
3782 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3783 {
3784         int i;
3785         u32 tx_reg;
3786
3787         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3788                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3789                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3790                         break;
3791
3792                 usleep_range(10, 20);
3793         }
3794         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3795                 return -ETIMEDOUT;
3796
3797         return 0;
3798 }
3799
3800 /**
3801  * i40e_vsi_control_tx - Start or stop a VSI's rings
3802  * @vsi: the VSI being configured
3803  * @enable: start or stop the rings
3804  **/
3805 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3806 {
3807         struct i40e_pf *pf = vsi->back;
3808         struct i40e_hw *hw = &pf->hw;
3809         int i, j, pf_q, ret = 0;
3810         u32 tx_reg;
3811
3812         pf_q = vsi->base_queue;
3813         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3814
3815                 /* warn the TX unit of coming changes */
3816                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3817                 if (!enable)
3818                         usleep_range(10, 20);
3819
3820                 for (j = 0; j < 50; j++) {
3821                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3822                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3823                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3824                                 break;
3825                         usleep_range(1000, 2000);
3826                 }
3827                 /* Skip if the queue is already in the requested state */
3828                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3829                         continue;
3830
3831                 /* turn on/off the queue */
3832                 if (enable) {
3833                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3834                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3835                 } else {
3836                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3837                 }
3838
3839                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3840                 /* No waiting for the Tx queue to disable */
3841                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3842                         continue;
3843
3844                 /* wait for the change to finish */
3845                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3846                 if (ret) {
3847                         dev_info(&pf->pdev->dev,
3848                                  "VSI seid %d Tx ring %d %sable timeout\n",
3849                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3850                         break;
3851                 }
3852         }
3853
3854         if (hw->revision_id == 0)
3855                 mdelay(50);
3856         return ret;
3857 }
3858
3859 /**
3860  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3861  * @pf: the PF being configured
3862  * @pf_q: the PF queue
3863  * @enable: enable or disable state of the queue
3864  *
3865  * This routine will wait for the given Rx queue of the PF to reach the
3866  * enabled or disabled state.
3867  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3868  * multiple retries; else will return 0 in case of success.
3869  **/
3870 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3871 {
3872         int i;
3873         u32 rx_reg;
3874
3875         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3876                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3877                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3878                         break;
3879
3880                 usleep_range(10, 20);
3881         }
3882         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3883                 return -ETIMEDOUT;
3884
3885         return 0;
3886 }
3887
3888 /**
3889  * i40e_vsi_control_rx - Start or stop a VSI's rings
3890  * @vsi: the VSI being configured
3891  * @enable: start or stop the rings
3892  **/
3893 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3894 {
3895         struct i40e_pf *pf = vsi->back;
3896         struct i40e_hw *hw = &pf->hw;
3897         int i, j, pf_q, ret = 0;
3898         u32 rx_reg;
3899
3900         pf_q = vsi->base_queue;
3901         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3902                 for (j = 0; j < 50; j++) {
3903                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3904                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3905                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3906                                 break;
3907                         usleep_range(1000, 2000);
3908                 }
3909
3910                 /* Skip if the queue is already in the requested state */
3911                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3912                         continue;
3913
3914                 /* turn on/off the queue */
3915                 if (enable)
3916                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3917                 else
3918                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3919                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3920
3921                 /* wait for the change to finish */
3922                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3923                 if (ret) {
3924                         dev_info(&pf->pdev->dev,
3925                                  "VSI seid %d Rx ring %d %sable timeout\n",
3926                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3927                         break;
3928                 }
3929         }
3930
3931         return ret;
3932 }
3933
3934 /**
3935  * i40e_vsi_control_rings - Start or stop a VSI's rings
3936  * @vsi: the VSI being configured
3937  * @enable: start or stop the rings
3938  **/
3939 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3940 {
3941         int ret = 0;
3942
3943         /* do rx first for enable and last for disable */
3944         if (request) {
3945                 ret = i40e_vsi_control_rx(vsi, request);
3946                 if (ret)
3947                         return ret;
3948                 ret = i40e_vsi_control_tx(vsi, request);
3949         } else {
3950                 /* Ignore return value, we need to shutdown whatever we can */
3951                 i40e_vsi_control_tx(vsi, request);
3952                 i40e_vsi_control_rx(vsi, request);
3953         }
3954
3955         return ret;
3956 }
3957
3958 /**
3959  * i40e_vsi_free_irq - Free the irq association with the OS
3960  * @vsi: the VSI being configured
3961  **/
3962 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3963 {
3964         struct i40e_pf *pf = vsi->back;
3965         struct i40e_hw *hw = &pf->hw;
3966         int base = vsi->base_vector;
3967         u32 val, qp;
3968         int i;
3969
3970         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3971                 if (!vsi->q_vectors)
3972                         return;
3973
3974                 if (!vsi->irqs_ready)
3975                         return;
3976
3977                 vsi->irqs_ready = false;
3978                 for (i = 0; i < vsi->num_q_vectors; i++) {
3979                         u16 vector = i + base;
3980
3981                         /* free only the irqs that were actually requested */
3982                         if (!vsi->q_vectors[i] ||
3983                             !vsi->q_vectors[i]->num_ringpairs)
3984                                 continue;
3985
3986                         /* clear the affinity_mask in the IRQ descriptor */
3987                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3988                                               NULL);
3989                         free_irq(pf->msix_entries[vector].vector,
3990                                  vsi->q_vectors[i]);
3991
3992                         /* Tear down the interrupt queue link list
3993                          *
3994                          * We know that they come in pairs and always
3995                          * the Rx first, then the Tx.  To clear the
3996                          * link list, stick the EOL value into the
3997                          * next_q field of the registers.
3998                          */
3999                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4000                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4001                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4002                         val |= I40E_QUEUE_END_OF_LIST
4003                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4004                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4005
4006                         while (qp != I40E_QUEUE_END_OF_LIST) {
4007                                 u32 next;
4008
4009                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4010
4011                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4012                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4013                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4014                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4015
4016                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4017                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4018
4019                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4020
4021                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4022
4023                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4024                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4025
4026                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4027                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4028                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4029                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4030
4031                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4032                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4033
4034                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4035                                 qp = next;
4036                         }
4037                 }
4038         } else {
4039                 free_irq(pf->pdev->irq, pf);
4040
4041                 val = rd32(hw, I40E_PFINT_LNKLST0);
4042                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4043                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4044                 val |= I40E_QUEUE_END_OF_LIST
4045                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4046                 wr32(hw, I40E_PFINT_LNKLST0, val);
4047
4048                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4049                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4050                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4051                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4052                          I40E_QINT_RQCTL_INTEVENT_MASK);
4053
4054                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4055                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4056
4057                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4058
4059                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4060
4061                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4062                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4063                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4064                          I40E_QINT_TQCTL_INTEVENT_MASK);
4065
4066                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4067                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4068
4069                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4070         }
4071 }
4072
4073 /**
4074  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4075  * @vsi: the VSI being configured
4076  * @v_idx: Index of vector to be freed
4077  *
4078  * This function frees the memory allocated to the q_vector.  In addition if
4079  * NAPI is enabled it will delete any references to the NAPI struct prior
4080  * to freeing the q_vector.
4081  **/
4082 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4083 {
4084         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4085         struct i40e_ring *ring;
4086
4087         if (!q_vector)
4088                 return;
4089
4090         /* disassociate q_vector from rings */
4091         i40e_for_each_ring(ring, q_vector->tx)
4092                 ring->q_vector = NULL;
4093
4094         i40e_for_each_ring(ring, q_vector->rx)
4095                 ring->q_vector = NULL;
4096
4097         /* only VSI w/ an associated netdev is set up w/ NAPI */
4098         if (vsi->netdev)
4099                 netif_napi_del(&q_vector->napi);
4100
4101         vsi->q_vectors[v_idx] = NULL;
4102
4103         kfree_rcu(q_vector, rcu);
4104 }
4105
4106 /**
4107  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4108  * @vsi: the VSI being un-configured
4109  *
4110  * This frees the memory allocated to the q_vectors and
4111  * deletes references to the NAPI struct.
4112  **/
4113 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4114 {
4115         int v_idx;
4116
4117         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4118                 i40e_free_q_vector(vsi, v_idx);
4119 }
4120
4121 /**
4122  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4123  * @pf: board private structure
4124  **/
4125 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4126 {
4127         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4128         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4129                 pci_disable_msix(pf->pdev);
4130                 kfree(pf->msix_entries);
4131                 pf->msix_entries = NULL;
4132                 kfree(pf->irq_pile);
4133                 pf->irq_pile = NULL;
4134         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4135                 pci_disable_msi(pf->pdev);
4136         }
4137         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4138 }
4139
4140 /**
4141  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4142  * @pf: board private structure
4143  *
4144  * We go through and clear interrupt specific resources and reset the structure
4145  * to pre-load conditions
4146  **/
4147 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4148 {
4149         int i;
4150
4151         i40e_stop_misc_vector(pf);
4152         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4153                 synchronize_irq(pf->msix_entries[0].vector);
4154                 free_irq(pf->msix_entries[0].vector, pf);
4155         }
4156
4157         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4158         for (i = 0; i < pf->num_alloc_vsi; i++)
4159                 if (pf->vsi[i])
4160                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4161         i40e_reset_interrupt_capability(pf);
4162 }
4163
4164 /**
4165  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4166  * @vsi: the VSI being configured
4167  **/
4168 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4169 {
4170         int q_idx;
4171
4172         if (!vsi->netdev)
4173                 return;
4174
4175         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4176                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4177 }
4178
4179 /**
4180  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4181  * @vsi: the VSI being configured
4182  **/
4183 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4184 {
4185         int q_idx;
4186
4187         if (!vsi->netdev)
4188                 return;
4189
4190         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4191                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4192 }
4193
4194 /**
4195  * i40e_vsi_close - Shut down a VSI
4196  * @vsi: the vsi to be quelled
4197  **/
4198 static void i40e_vsi_close(struct i40e_vsi *vsi)
4199 {
4200         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4201                 i40e_down(vsi);
4202         i40e_vsi_free_irq(vsi);
4203         i40e_vsi_free_tx_resources(vsi);
4204         i40e_vsi_free_rx_resources(vsi);
4205         vsi->current_netdev_flags = 0;
4206 }
4207
4208 /**
4209  * i40e_quiesce_vsi - Pause a given VSI
4210  * @vsi: the VSI being paused
4211  **/
4212 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4213 {
4214         if (test_bit(__I40E_DOWN, &vsi->state))
4215                 return;
4216
4217         /* No need to disable FCoE VSI when Tx suspended */
4218         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4219             vsi->type == I40E_VSI_FCOE) {
4220                 dev_dbg(&vsi->back->pdev->dev,
4221                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4222                 return;
4223         }
4224
4225         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4226         if (vsi->netdev && netif_running(vsi->netdev))
4227                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4228         else
4229                 i40e_vsi_close(vsi);
4230 }
4231
4232 /**
4233  * i40e_unquiesce_vsi - Resume a given VSI
4234  * @vsi: the VSI being resumed
4235  **/
4236 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4237 {
4238         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4239                 return;
4240
4241         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4242         if (vsi->netdev && netif_running(vsi->netdev))
4243                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4244         else
4245                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4246 }
4247
4248 /**
4249  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4250  * @pf: the PF
4251  **/
4252 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4253 {
4254         int v;
4255
4256         for (v = 0; v < pf->num_alloc_vsi; v++) {
4257                 if (pf->vsi[v])
4258                         i40e_quiesce_vsi(pf->vsi[v]);
4259         }
4260 }
4261
4262 /**
4263  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4264  * @pf: the PF
4265  **/
4266 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4267 {
4268         int v;
4269
4270         for (v = 0; v < pf->num_alloc_vsi; v++) {
4271                 if (pf->vsi[v])
4272                         i40e_unquiesce_vsi(pf->vsi[v]);
4273         }
4274 }
4275
4276 #ifdef CONFIG_I40E_DCB
4277 /**
4278  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4279  * @vsi: the VSI being configured
4280  *
4281  * This function waits for the given VSI's Tx queues to be disabled.
4282  **/
4283 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4284 {
4285         struct i40e_pf *pf = vsi->back;
4286         int i, pf_q, ret;
4287
4288         pf_q = vsi->base_queue;
4289         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4290                 /* Check and wait for the disable status of the queue */
4291                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4292                 if (ret) {
4293                         dev_info(&pf->pdev->dev,
4294                                  "VSI seid %d Tx ring %d disable timeout\n",
4295                                  vsi->seid, pf_q);
4296                         return ret;
4297                 }
4298         }
4299
4300         return 0;
4301 }
4302
4303 /**
4304  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4305  * @pf: the PF
4306  *
4307  * This function waits for the Tx queues to be in disabled state for all the
4308  * VSIs that are managed by this PF.
4309  **/
4310 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4311 {
4312         int v, ret = 0;
4313
4314         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4315                 /* No need to wait for FCoE VSI queues */
4316                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4317                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4318                         if (ret)
4319                                 break;
4320                 }
4321         }
4322
4323         return ret;
4324 }
4325
4326 #endif
4327
4328 /**
4329  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4330  * @q_idx: TX queue number
4331  * @vsi: Pointer to VSI struct
4332  *
4333  * This function checks specified queue for given VSI. Detects hung condition.
4334  * Sets hung bit since it is two step process. Before next run of service task
4335  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4336  * hung condition remain unchanged and during subsequent run, this function
4337  * issues SW interrupt to recover from hung condition.
4338  **/
4339 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4340 {
4341         struct i40e_ring *tx_ring = NULL;
4342         struct i40e_pf  *pf;
4343         u32 head, val, tx_pending;
4344         int i;
4345
4346         pf = vsi->back;
4347
4348         /* now that we have an index, find the tx_ring struct */
4349         for (i = 0; i < vsi->num_queue_pairs; i++) {
4350                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4351                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4352                                 tx_ring = vsi->tx_rings[i];
4353                                 break;
4354                         }
4355                 }
4356         }
4357
4358         if (!tx_ring)
4359                 return;
4360
4361         /* Read interrupt register */
4362         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4363                 val = rd32(&pf->hw,
4364                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4365                                                tx_ring->vsi->base_vector - 1));
4366         else
4367                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4368
4369         head = i40e_get_head(tx_ring);
4370
4371         tx_pending = i40e_get_tx_pending(tx_ring);
4372
4373         /* Interrupts are disabled and TX pending is non-zero,
4374          * trigger the SW interrupt (don't wait). Worst case
4375          * there will be one extra interrupt which may result
4376          * into not cleaning any queues because queues are cleaned.
4377          */
4378         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4379                 i40e_force_wb(vsi, tx_ring->q_vector);
4380 }
4381
4382 /**
4383  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4384  * @pf:  pointer to PF struct
4385  *
4386  * LAN VSI has netdev and netdev has TX queues. This function is to check
4387  * each of those TX queues if they are hung, trigger recovery by issuing
4388  * SW interrupt.
4389  **/
4390 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4391 {
4392         struct net_device *netdev;
4393         struct i40e_vsi *vsi;
4394         int i;
4395
4396         /* Only for LAN VSI */
4397         vsi = pf->vsi[pf->lan_vsi];
4398
4399         if (!vsi)
4400                 return;
4401
4402         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4403         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4404             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4405                 return;
4406
4407         /* Make sure type is MAIN VSI */
4408         if (vsi->type != I40E_VSI_MAIN)
4409                 return;
4410
4411         netdev = vsi->netdev;
4412         if (!netdev)
4413                 return;
4414
4415         /* Bail out if netif_carrier is not OK */
4416         if (!netif_carrier_ok(netdev))
4417                 return;
4418
4419         /* Go thru' TX queues for netdev */
4420         for (i = 0; i < netdev->num_tx_queues; i++) {
4421                 struct netdev_queue *q;
4422
4423                 q = netdev_get_tx_queue(netdev, i);
4424                 if (q)
4425                         i40e_detect_recover_hung_queue(i, vsi);
4426         }
4427 }
4428
4429 /**
4430  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4431  * @pf: pointer to PF
4432  *
4433  * Get TC map for ISCSI PF type that will include iSCSI TC
4434  * and LAN TC.
4435  **/
4436 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4437 {
4438         struct i40e_dcb_app_priority_table app;
4439         struct i40e_hw *hw = &pf->hw;
4440         u8 enabled_tc = 1; /* TC0 is always enabled */
4441         u8 tc, i;
4442         /* Get the iSCSI APP TLV */
4443         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4444
4445         for (i = 0; i < dcbcfg->numapps; i++) {
4446                 app = dcbcfg->app[i];
4447                 if (app.selector == I40E_APP_SEL_TCPIP &&
4448                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4449                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4450                         enabled_tc |= BIT_ULL(tc);
4451                         break;
4452                 }
4453         }
4454
4455         return enabled_tc;
4456 }
4457
4458 /**
4459  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4460  * @dcbcfg: the corresponding DCBx configuration structure
4461  *
4462  * Return the number of TCs from given DCBx configuration
4463  **/
4464 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4465 {
4466         u8 num_tc = 0;
4467         int i;
4468
4469         /* Scan the ETS Config Priority Table to find
4470          * traffic class enabled for a given priority
4471          * and use the traffic class index to get the
4472          * number of traffic classes enabled
4473          */
4474         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4475                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4476                         num_tc = dcbcfg->etscfg.prioritytable[i];
4477         }
4478
4479         /* Traffic class index starts from zero so
4480          * increment to return the actual count
4481          */
4482         return num_tc + 1;
4483 }
4484
4485 /**
4486  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4487  * @dcbcfg: the corresponding DCBx configuration structure
4488  *
4489  * Query the current DCB configuration and return the number of
4490  * traffic classes enabled from the given DCBX config
4491  **/
4492 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4493 {
4494         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4495         u8 enabled_tc = 1;
4496         u8 i;
4497
4498         for (i = 0; i < num_tc; i++)
4499                 enabled_tc |= BIT(i);
4500
4501         return enabled_tc;
4502 }
4503
4504 /**
4505  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4506  * @pf: PF being queried
4507  *
4508  * Return number of traffic classes enabled for the given PF
4509  **/
4510 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4511 {
4512         struct i40e_hw *hw = &pf->hw;
4513         u8 i, enabled_tc;
4514         u8 num_tc = 0;
4515         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4516
4517         /* If DCB is not enabled then always in single TC */
4518         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4519                 return 1;
4520
4521         /* SFP mode will be enabled for all TCs on port */
4522         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4523                 return i40e_dcb_get_num_tc(dcbcfg);
4524
4525         /* MFP mode return count of enabled TCs for this PF */
4526         if (pf->hw.func_caps.iscsi)
4527                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4528         else
4529                 return 1; /* Only TC0 */
4530
4531         /* At least have TC0 */
4532         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4533         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4534                 if (enabled_tc & BIT_ULL(i))
4535                         num_tc++;
4536         }
4537         return num_tc;
4538 }
4539
4540 /**
4541  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4542  * @pf: PF being queried
4543  *
4544  * Return a bitmap for first enabled traffic class for this PF.
4545  **/
4546 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4547 {
4548         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4549         u8 i = 0;
4550
4551         if (!enabled_tc)
4552                 return 0x1; /* TC0 */
4553
4554         /* Find the first enabled TC */
4555         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4556                 if (enabled_tc & BIT_ULL(i))
4557                         break;
4558         }
4559
4560         return BIT(i);
4561 }
4562
4563 /**
4564  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4565  * @pf: PF being queried
4566  *
4567  * Return a bitmap for enabled traffic classes for this PF.
4568  **/
4569 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4570 {
4571         /* If DCB is not enabled for this PF then just return default TC */
4572         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4573                 return i40e_pf_get_default_tc(pf);
4574
4575         /* SFP mode we want PF to be enabled for all TCs */
4576         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4577                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4578
4579         /* MFP enabled and iSCSI PF type */
4580         if (pf->hw.func_caps.iscsi)
4581                 return i40e_get_iscsi_tc_map(pf);
4582         else
4583                 return i40e_pf_get_default_tc(pf);
4584 }
4585
4586 /**
4587  * i40e_vsi_get_bw_info - Query VSI BW Information
4588  * @vsi: the VSI being queried
4589  *
4590  * Returns 0 on success, negative value on failure
4591  **/
4592 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4593 {
4594         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4595         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4596         struct i40e_pf *pf = vsi->back;
4597         struct i40e_hw *hw = &pf->hw;
4598         i40e_status ret;
4599         u32 tc_bw_max;
4600         int i;
4601
4602         /* Get the VSI level BW configuration */
4603         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4604         if (ret) {
4605                 dev_info(&pf->pdev->dev,
4606                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4607                          i40e_stat_str(&pf->hw, ret),
4608                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4609                 return -EINVAL;
4610         }
4611
4612         /* Get the VSI level BW configuration per TC */
4613         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4614                                                NULL);
4615         if (ret) {
4616                 dev_info(&pf->pdev->dev,
4617                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4618                          i40e_stat_str(&pf->hw, ret),
4619                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4620                 return -EINVAL;
4621         }
4622
4623         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4624                 dev_info(&pf->pdev->dev,
4625                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4626                          bw_config.tc_valid_bits,
4627                          bw_ets_config.tc_valid_bits);
4628                 /* Still continuing */
4629         }
4630
4631         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4632         vsi->bw_max_quanta = bw_config.max_bw;
4633         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4634                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4635         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4636                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4637                 vsi->bw_ets_limit_credits[i] =
4638                                         le16_to_cpu(bw_ets_config.credits[i]);
4639                 /* 3 bits out of 4 for each TC */
4640                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4641         }
4642
4643         return 0;
4644 }
4645
4646 /**
4647  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4648  * @vsi: the VSI being configured
4649  * @enabled_tc: TC bitmap
4650  * @bw_credits: BW shared credits per TC
4651  *
4652  * Returns 0 on success, negative value on failure
4653  **/
4654 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4655                                        u8 *bw_share)
4656 {
4657         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4658         i40e_status ret;
4659         int i;
4660
4661         bw_data.tc_valid_bits = enabled_tc;
4662         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4663                 bw_data.tc_bw_credits[i] = bw_share[i];
4664
4665         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4666                                        NULL);
4667         if (ret) {
4668                 dev_info(&vsi->back->pdev->dev,
4669                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4670                          vsi->back->hw.aq.asq_last_status);
4671                 return -EINVAL;
4672         }
4673
4674         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4675                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4676
4677         return 0;
4678 }
4679
4680 /**
4681  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4682  * @vsi: the VSI being configured
4683  * @enabled_tc: TC map to be enabled
4684  *
4685  **/
4686 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4687 {
4688         struct net_device *netdev = vsi->netdev;
4689         struct i40e_pf *pf = vsi->back;
4690         struct i40e_hw *hw = &pf->hw;
4691         u8 netdev_tc = 0;
4692         int i;
4693         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4694
4695         if (!netdev)
4696                 return;
4697
4698         if (!enabled_tc) {
4699                 netdev_reset_tc(netdev);
4700                 return;
4701         }
4702
4703         /* Set up actual enabled TCs on the VSI */
4704         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4705                 return;
4706
4707         /* set per TC queues for the VSI */
4708         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4709                 /* Only set TC queues for enabled tcs
4710                  *
4711                  * e.g. For a VSI that has TC0 and TC3 enabled the
4712                  * enabled_tc bitmap would be 0x00001001; the driver
4713                  * will set the numtc for netdev as 2 that will be
4714                  * referenced by the netdev layer as TC 0 and 1.
4715                  */
4716                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4717                         netdev_set_tc_queue(netdev,
4718                                         vsi->tc_config.tc_info[i].netdev_tc,
4719                                         vsi->tc_config.tc_info[i].qcount,
4720                                         vsi->tc_config.tc_info[i].qoffset);
4721         }
4722
4723         /* Assign UP2TC map for the VSI */
4724         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4725                 /* Get the actual TC# for the UP */
4726                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4727                 /* Get the mapped netdev TC# for the UP */
4728                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4729                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4730         }
4731 }
4732
4733 /**
4734  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4735  * @vsi: the VSI being configured
4736  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4737  **/
4738 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4739                                       struct i40e_vsi_context *ctxt)
4740 {
4741         /* copy just the sections touched not the entire info
4742          * since not all sections are valid as returned by
4743          * update vsi params
4744          */
4745         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4746         memcpy(&vsi->info.queue_mapping,
4747                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4748         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4749                sizeof(vsi->info.tc_mapping));
4750 }
4751
4752 /**
4753  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4754  * @vsi: VSI to be configured
4755  * @enabled_tc: TC bitmap
4756  *
4757  * This configures a particular VSI for TCs that are mapped to the
4758  * given TC bitmap. It uses default bandwidth share for TCs across
4759  * VSIs to configure TC for a particular VSI.
4760  *
4761  * NOTE:
4762  * It is expected that the VSI queues have been quisced before calling
4763  * this function.
4764  **/
4765 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4766 {
4767         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4768         struct i40e_vsi_context ctxt;
4769         int ret = 0;
4770         int i;
4771
4772         /* Check if enabled_tc is same as existing or new TCs */
4773         if (vsi->tc_config.enabled_tc == enabled_tc)
4774                 return ret;
4775
4776         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4777         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4778                 if (enabled_tc & BIT_ULL(i))
4779                         bw_share[i] = 1;
4780         }
4781
4782         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4783         if (ret) {
4784                 dev_info(&vsi->back->pdev->dev,
4785                          "Failed configuring TC map %d for VSI %d\n",
4786                          enabled_tc, vsi->seid);
4787                 goto out;
4788         }
4789
4790         /* Update Queue Pairs Mapping for currently enabled UPs */
4791         ctxt.seid = vsi->seid;
4792         ctxt.pf_num = vsi->back->hw.pf_id;
4793         ctxt.vf_num = 0;
4794         ctxt.uplink_seid = vsi->uplink_seid;
4795         ctxt.info = vsi->info;
4796         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4797
4798         /* Update the VSI after updating the VSI queue-mapping information */
4799         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4800         if (ret) {
4801                 dev_info(&vsi->back->pdev->dev,
4802                          "Update vsi tc config failed, err %s aq_err %s\n",
4803                          i40e_stat_str(&vsi->back->hw, ret),
4804                          i40e_aq_str(&vsi->back->hw,
4805                                      vsi->back->hw.aq.asq_last_status));
4806                 goto out;
4807         }
4808         /* update the local VSI info with updated queue map */
4809         i40e_vsi_update_queue_map(vsi, &ctxt);
4810         vsi->info.valid_sections = 0;
4811
4812         /* Update current VSI BW information */
4813         ret = i40e_vsi_get_bw_info(vsi);
4814         if (ret) {
4815                 dev_info(&vsi->back->pdev->dev,
4816                          "Failed updating vsi bw info, err %s aq_err %s\n",
4817                          i40e_stat_str(&vsi->back->hw, ret),
4818                          i40e_aq_str(&vsi->back->hw,
4819                                      vsi->back->hw.aq.asq_last_status));
4820                 goto out;
4821         }
4822
4823         /* Update the netdev TC setup */
4824         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4825 out:
4826         return ret;
4827 }
4828
4829 /**
4830  * i40e_veb_config_tc - Configure TCs for given VEB
4831  * @veb: given VEB
4832  * @enabled_tc: TC bitmap
4833  *
4834  * Configures given TC bitmap for VEB (switching) element
4835  **/
4836 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4837 {
4838         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4839         struct i40e_pf *pf = veb->pf;
4840         int ret = 0;
4841         int i;
4842
4843         /* No TCs or already enabled TCs just return */
4844         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4845                 return ret;
4846
4847         bw_data.tc_valid_bits = enabled_tc;
4848         /* bw_data.absolute_credits is not set (relative) */
4849
4850         /* Enable ETS TCs with equal BW Share for now */
4851         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4852                 if (enabled_tc & BIT_ULL(i))
4853                         bw_data.tc_bw_share_credits[i] = 1;
4854         }
4855
4856         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4857                                                    &bw_data, NULL);
4858         if (ret) {
4859                 dev_info(&pf->pdev->dev,
4860                          "VEB bw config failed, err %s aq_err %s\n",
4861                          i40e_stat_str(&pf->hw, ret),
4862                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4863                 goto out;
4864         }
4865
4866         /* Update the BW information */
4867         ret = i40e_veb_get_bw_info(veb);
4868         if (ret) {
4869                 dev_info(&pf->pdev->dev,
4870                          "Failed getting veb bw config, err %s aq_err %s\n",
4871                          i40e_stat_str(&pf->hw, ret),
4872                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4873         }
4874
4875 out:
4876         return ret;
4877 }
4878
4879 #ifdef CONFIG_I40E_DCB
4880 /**
4881  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4882  * @pf: PF struct
4883  *
4884  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4885  * the caller would've quiesce all the VSIs before calling
4886  * this function
4887  **/
4888 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4889 {
4890         u8 tc_map = 0;
4891         int ret;
4892         u8 v;
4893
4894         /* Enable the TCs available on PF to all VEBs */
4895         tc_map = i40e_pf_get_tc_map(pf);
4896         for (v = 0; v < I40E_MAX_VEB; v++) {
4897                 if (!pf->veb[v])
4898                         continue;
4899                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4900                 if (ret) {
4901                         dev_info(&pf->pdev->dev,
4902                                  "Failed configuring TC for VEB seid=%d\n",
4903                                  pf->veb[v]->seid);
4904                         /* Will try to configure as many components */
4905                 }
4906         }
4907
4908         /* Update each VSI */
4909         for (v = 0; v < pf->num_alloc_vsi; v++) {
4910                 if (!pf->vsi[v])
4911                         continue;
4912
4913                 /* - Enable all TCs for the LAN VSI
4914 #ifdef I40E_FCOE
4915                  * - For FCoE VSI only enable the TC configured
4916                  *   as per the APP TLV
4917 #endif
4918                  * - For all others keep them at TC0 for now
4919                  */
4920                 if (v == pf->lan_vsi)
4921                         tc_map = i40e_pf_get_tc_map(pf);
4922                 else
4923                         tc_map = i40e_pf_get_default_tc(pf);
4924 #ifdef I40E_FCOE
4925                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4926                         tc_map = i40e_get_fcoe_tc_map(pf);
4927 #endif /* #ifdef I40E_FCOE */
4928
4929                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4930                 if (ret) {
4931                         dev_info(&pf->pdev->dev,
4932                                  "Failed configuring TC for VSI seid=%d\n",
4933                                  pf->vsi[v]->seid);
4934                         /* Will try to configure as many components */
4935                 } else {
4936                         /* Re-configure VSI vectors based on updated TC map */
4937                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4938                         if (pf->vsi[v]->netdev)
4939                                 i40e_dcbnl_set_all(pf->vsi[v]);
4940                 }
4941         }
4942 }
4943
4944 /**
4945  * i40e_resume_port_tx - Resume port Tx
4946  * @pf: PF struct
4947  *
4948  * Resume a port's Tx and issue a PF reset in case of failure to
4949  * resume.
4950  **/
4951 static int i40e_resume_port_tx(struct i40e_pf *pf)
4952 {
4953         struct i40e_hw *hw = &pf->hw;
4954         int ret;
4955
4956         ret = i40e_aq_resume_port_tx(hw, NULL);
4957         if (ret) {
4958                 dev_info(&pf->pdev->dev,
4959                          "Resume Port Tx failed, err %s aq_err %s\n",
4960                           i40e_stat_str(&pf->hw, ret),
4961                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4962                 /* Schedule PF reset to recover */
4963                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4964                 i40e_service_event_schedule(pf);
4965         }
4966
4967         return ret;
4968 }
4969
4970 /**
4971  * i40e_init_pf_dcb - Initialize DCB configuration
4972  * @pf: PF being configured
4973  *
4974  * Query the current DCB configuration and cache it
4975  * in the hardware structure
4976  **/
4977 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4978 {
4979         struct i40e_hw *hw = &pf->hw;
4980         int err = 0;
4981
4982         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4983         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4984             (pf->hw.aq.fw_maj_ver < 4))
4985                 goto out;
4986
4987         /* Get the initial DCB configuration */
4988         err = i40e_init_dcb(hw);
4989         if (!err) {
4990                 /* Device/Function is not DCBX capable */
4991                 if ((!hw->func_caps.dcb) ||
4992                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4993                         dev_info(&pf->pdev->dev,
4994                                  "DCBX offload is not supported or is disabled for this PF.\n");
4995
4996                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4997                                 goto out;
4998
4999                 } else {
5000                         /* When status is not DISABLED then DCBX in FW */
5001                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5002                                        DCB_CAP_DCBX_VER_IEEE;
5003
5004                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5005                         /* Enable DCB tagging only when more than one TC */
5006                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5007                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5008                         dev_dbg(&pf->pdev->dev,
5009                                 "DCBX offload is supported for this PF.\n");
5010                 }
5011         } else {
5012                 dev_info(&pf->pdev->dev,
5013                          "Query for DCB configuration failed, err %s aq_err %s\n",
5014                          i40e_stat_str(&pf->hw, err),
5015                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5016         }
5017
5018 out:
5019         return err;
5020 }
5021 #endif /* CONFIG_I40E_DCB */
5022 #define SPEED_SIZE 14
5023 #define FC_SIZE 8
5024 /**
5025  * i40e_print_link_message - print link up or down
5026  * @vsi: the VSI for which link needs a message
5027  */
5028 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5029 {
5030         char *speed = "Unknown";
5031         char *fc = "Unknown";
5032
5033         if (vsi->current_isup == isup)
5034                 return;
5035         vsi->current_isup = isup;
5036         if (!isup) {
5037                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5038                 return;
5039         }
5040
5041         /* Warn user if link speed on NPAR enabled partition is not at
5042          * least 10GB
5043          */
5044         if (vsi->back->hw.func_caps.npar_enable &&
5045             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5046              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5047                 netdev_warn(vsi->netdev,
5048                             "The partition detected link speed that is less than 10Gbps\n");
5049
5050         switch (vsi->back->hw.phy.link_info.link_speed) {
5051         case I40E_LINK_SPEED_40GB:
5052                 speed = "40 G";
5053                 break;
5054         case I40E_LINK_SPEED_20GB:
5055                 speed = "20 G";
5056                 break;
5057         case I40E_LINK_SPEED_10GB:
5058                 speed = "10 G";
5059                 break;
5060         case I40E_LINK_SPEED_1GB:
5061                 speed = "1000 M";
5062                 break;
5063         case I40E_LINK_SPEED_100MB:
5064                 speed = "100 M";
5065                 break;
5066         default:
5067                 break;
5068         }
5069
5070         switch (vsi->back->hw.fc.current_mode) {
5071         case I40E_FC_FULL:
5072                 fc = "RX/TX";
5073                 break;
5074         case I40E_FC_TX_PAUSE:
5075                 fc = "TX";
5076                 break;
5077         case I40E_FC_RX_PAUSE:
5078                 fc = "RX";
5079                 break;
5080         default:
5081                 fc = "None";
5082                 break;
5083         }
5084
5085         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5086                     speed, fc);
5087 }
5088
5089 /**
5090  * i40e_up_complete - Finish the last steps of bringing up a connection
5091  * @vsi: the VSI being configured
5092  **/
5093 static int i40e_up_complete(struct i40e_vsi *vsi)
5094 {
5095         struct i40e_pf *pf = vsi->back;
5096         int err;
5097
5098         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5099                 i40e_vsi_configure_msix(vsi);
5100         else
5101                 i40e_configure_msi_and_legacy(vsi);
5102
5103         /* start rings */
5104         err = i40e_vsi_control_rings(vsi, true);
5105         if (err)
5106                 return err;
5107
5108         clear_bit(__I40E_DOWN, &vsi->state);
5109         i40e_napi_enable_all(vsi);
5110         i40e_vsi_enable_irq(vsi);
5111
5112         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5113             (vsi->netdev)) {
5114                 i40e_print_link_message(vsi, true);
5115                 netif_tx_start_all_queues(vsi->netdev);
5116                 netif_carrier_on(vsi->netdev);
5117         } else if (vsi->netdev) {
5118                 i40e_print_link_message(vsi, false);
5119                 /* need to check for qualified module here*/
5120                 if ((pf->hw.phy.link_info.link_info &
5121                         I40E_AQ_MEDIA_AVAILABLE) &&
5122                     (!(pf->hw.phy.link_info.an_info &
5123                         I40E_AQ_QUALIFIED_MODULE)))
5124                         netdev_err(vsi->netdev,
5125                                    "the driver failed to link because an unqualified module was detected.");
5126         }
5127
5128         /* replay FDIR SB filters */
5129         if (vsi->type == I40E_VSI_FDIR) {
5130                 /* reset fd counters */
5131                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5132                 if (pf->fd_tcp_rule > 0) {
5133                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5134                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5135                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5136                         pf->fd_tcp_rule = 0;
5137                 }
5138                 i40e_fdir_filter_restore(vsi);
5139         }
5140         i40e_service_event_schedule(pf);
5141
5142         return 0;
5143 }
5144
5145 /**
5146  * i40e_vsi_reinit_locked - Reset the VSI
5147  * @vsi: the VSI being configured
5148  *
5149  * Rebuild the ring structs after some configuration
5150  * has changed, e.g. MTU size.
5151  **/
5152 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5153 {
5154         struct i40e_pf *pf = vsi->back;
5155
5156         WARN_ON(in_interrupt());
5157         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5158                 usleep_range(1000, 2000);
5159         i40e_down(vsi);
5160
5161         /* Give a VF some time to respond to the reset.  The
5162          * two second wait is based upon the watchdog cycle in
5163          * the VF driver.
5164          */
5165         if (vsi->type == I40E_VSI_SRIOV)
5166                 msleep(2000);
5167         i40e_up(vsi);
5168         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5169 }
5170
5171 /**
5172  * i40e_up - Bring the connection back up after being down
5173  * @vsi: the VSI being configured
5174  **/
5175 int i40e_up(struct i40e_vsi *vsi)
5176 {
5177         int err;
5178
5179         err = i40e_vsi_configure(vsi);
5180         if (!err)
5181                 err = i40e_up_complete(vsi);
5182
5183         return err;
5184 }
5185
5186 /**
5187  * i40e_down - Shutdown the connection processing
5188  * @vsi: the VSI being stopped
5189  **/
5190 void i40e_down(struct i40e_vsi *vsi)
5191 {
5192         int i;
5193
5194         /* It is assumed that the caller of this function
5195          * sets the vsi->state __I40E_DOWN bit.
5196          */
5197         if (vsi->netdev) {
5198                 netif_carrier_off(vsi->netdev);
5199                 netif_tx_disable(vsi->netdev);
5200         }
5201         i40e_vsi_disable_irq(vsi);
5202         i40e_vsi_control_rings(vsi, false);
5203         i40e_napi_disable_all(vsi);
5204
5205         for (i = 0; i < vsi->num_queue_pairs; i++) {
5206                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5207                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5208         }
5209 }
5210
5211 /**
5212  * i40e_setup_tc - configure multiple traffic classes
5213  * @netdev: net device to configure
5214  * @tc: number of traffic classes to enable
5215  **/
5216 #ifdef I40E_FCOE
5217 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5218 #else
5219 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5220 #endif
5221 {
5222         struct i40e_netdev_priv *np = netdev_priv(netdev);
5223         struct i40e_vsi *vsi = np->vsi;
5224         struct i40e_pf *pf = vsi->back;
5225         u8 enabled_tc = 0;
5226         int ret = -EINVAL;
5227         int i;
5228
5229         /* Check if DCB enabled to continue */
5230         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5231                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5232                 goto exit;
5233         }
5234
5235         /* Check if MFP enabled */
5236         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5237                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5238                 goto exit;
5239         }
5240
5241         /* Check whether tc count is within enabled limit */
5242         if (tc > i40e_pf_get_num_tc(pf)) {
5243                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5244                 goto exit;
5245         }
5246
5247         /* Generate TC map for number of tc requested */
5248         for (i = 0; i < tc; i++)
5249                 enabled_tc |= BIT_ULL(i);
5250
5251         /* Requesting same TC configuration as already enabled */
5252         if (enabled_tc == vsi->tc_config.enabled_tc)
5253                 return 0;
5254
5255         /* Quiesce VSI queues */
5256         i40e_quiesce_vsi(vsi);
5257
5258         /* Configure VSI for enabled TCs */
5259         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5260         if (ret) {
5261                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5262                             vsi->seid);
5263                 goto exit;
5264         }
5265
5266         /* Unquiesce VSI */
5267         i40e_unquiesce_vsi(vsi);
5268
5269 exit:
5270         return ret;
5271 }
5272
5273 /**
5274  * i40e_open - Called when a network interface is made active
5275  * @netdev: network interface device structure
5276  *
5277  * The open entry point is called when a network interface is made
5278  * active by the system (IFF_UP).  At this point all resources needed
5279  * for transmit and receive operations are allocated, the interrupt
5280  * handler is registered with the OS, the netdev watchdog subtask is
5281  * enabled, and the stack is notified that the interface is ready.
5282  *
5283  * Returns 0 on success, negative value on failure
5284  **/
5285 int i40e_open(struct net_device *netdev)
5286 {
5287         struct i40e_netdev_priv *np = netdev_priv(netdev);
5288         struct i40e_vsi *vsi = np->vsi;
5289         struct i40e_pf *pf = vsi->back;
5290         int err;
5291
5292         /* disallow open during test or if eeprom is broken */
5293         if (test_bit(__I40E_TESTING, &pf->state) ||
5294             test_bit(__I40E_BAD_EEPROM, &pf->state))
5295                 return -EBUSY;
5296
5297         netif_carrier_off(netdev);
5298
5299         err = i40e_vsi_open(vsi);
5300         if (err)
5301                 return err;
5302
5303         /* configure global TSO hardware offload settings */
5304         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5305                                                        TCP_FLAG_FIN) >> 16);
5306         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5307                                                        TCP_FLAG_FIN |
5308                                                        TCP_FLAG_CWR) >> 16);
5309         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5310
5311 #ifdef CONFIG_I40E_VXLAN
5312         vxlan_get_rx_port(netdev);
5313 #endif
5314
5315         return 0;
5316 }
5317
5318 /**
5319  * i40e_vsi_open -
5320  * @vsi: the VSI to open
5321  *
5322  * Finish initialization of the VSI.
5323  *
5324  * Returns 0 on success, negative value on failure
5325  **/
5326 int i40e_vsi_open(struct i40e_vsi *vsi)
5327 {
5328         struct i40e_pf *pf = vsi->back;
5329         char int_name[I40E_INT_NAME_STR_LEN];
5330         int err;
5331
5332         /* allocate descriptors */
5333         err = i40e_vsi_setup_tx_resources(vsi);
5334         if (err)
5335                 goto err_setup_tx;
5336         err = i40e_vsi_setup_rx_resources(vsi);
5337         if (err)
5338                 goto err_setup_rx;
5339
5340         err = i40e_vsi_configure(vsi);
5341         if (err)
5342                 goto err_setup_rx;
5343
5344         if (vsi->netdev) {
5345                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5346                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5347                 err = i40e_vsi_request_irq(vsi, int_name);
5348                 if (err)
5349                         goto err_setup_rx;
5350
5351                 /* Notify the stack of the actual queue counts. */
5352                 err = netif_set_real_num_tx_queues(vsi->netdev,
5353                                                    vsi->num_queue_pairs);
5354                 if (err)
5355                         goto err_set_queues;
5356
5357                 err = netif_set_real_num_rx_queues(vsi->netdev,
5358                                                    vsi->num_queue_pairs);
5359                 if (err)
5360                         goto err_set_queues;
5361
5362         } else if (vsi->type == I40E_VSI_FDIR) {
5363                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5364                          dev_driver_string(&pf->pdev->dev),
5365                          dev_name(&pf->pdev->dev));
5366                 err = i40e_vsi_request_irq(vsi, int_name);
5367
5368         } else {
5369                 err = -EINVAL;
5370                 goto err_setup_rx;
5371         }
5372
5373         err = i40e_up_complete(vsi);
5374         if (err)
5375                 goto err_up_complete;
5376
5377         return 0;
5378
5379 err_up_complete:
5380         i40e_down(vsi);
5381 err_set_queues:
5382         i40e_vsi_free_irq(vsi);
5383 err_setup_rx:
5384         i40e_vsi_free_rx_resources(vsi);
5385 err_setup_tx:
5386         i40e_vsi_free_tx_resources(vsi);
5387         if (vsi == pf->vsi[pf->lan_vsi])
5388                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5389
5390         return err;
5391 }
5392
5393 /**
5394  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5395  * @pf: Pointer to PF
5396  *
5397  * This function destroys the hlist where all the Flow Director
5398  * filters were saved.
5399  **/
5400 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5401 {
5402         struct i40e_fdir_filter *filter;
5403         struct hlist_node *node2;
5404
5405         hlist_for_each_entry_safe(filter, node2,
5406                                   &pf->fdir_filter_list, fdir_node) {
5407                 hlist_del(&filter->fdir_node);
5408                 kfree(filter);
5409         }
5410         pf->fdir_pf_active_filters = 0;
5411 }
5412
5413 /**
5414  * i40e_close - Disables a network interface
5415  * @netdev: network interface device structure
5416  *
5417  * The close entry point is called when an interface is de-activated
5418  * by the OS.  The hardware is still under the driver's control, but
5419  * this netdev interface is disabled.
5420  *
5421  * Returns 0, this is not allowed to fail
5422  **/
5423 #ifdef I40E_FCOE
5424 int i40e_close(struct net_device *netdev)
5425 #else
5426 static int i40e_close(struct net_device *netdev)
5427 #endif
5428 {
5429         struct i40e_netdev_priv *np = netdev_priv(netdev);
5430         struct i40e_vsi *vsi = np->vsi;
5431
5432         i40e_vsi_close(vsi);
5433
5434         return 0;
5435 }
5436
5437 /**
5438  * i40e_do_reset - Start a PF or Core Reset sequence
5439  * @pf: board private structure
5440  * @reset_flags: which reset is requested
5441  *
5442  * The essential difference in resets is that the PF Reset
5443  * doesn't clear the packet buffers, doesn't reset the PE
5444  * firmware, and doesn't bother the other PFs on the chip.
5445  **/
5446 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5447 {
5448         u32 val;
5449
5450         WARN_ON(in_interrupt());
5451
5452         if (i40e_check_asq_alive(&pf->hw))
5453                 i40e_vc_notify_reset(pf);
5454
5455         /* do the biggest reset indicated */
5456         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5457
5458                 /* Request a Global Reset
5459                  *
5460                  * This will start the chip's countdown to the actual full
5461                  * chip reset event, and a warning interrupt to be sent
5462                  * to all PFs, including the requestor.  Our handler
5463                  * for the warning interrupt will deal with the shutdown
5464                  * and recovery of the switch setup.
5465                  */
5466                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5467                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5468                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5469                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5470
5471         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5472
5473                 /* Request a Core Reset
5474                  *
5475                  * Same as Global Reset, except does *not* include the MAC/PHY
5476                  */
5477                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5478                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5479                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5480                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5481                 i40e_flush(&pf->hw);
5482
5483         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5484
5485                 /* Request a PF Reset
5486                  *
5487                  * Resets only the PF-specific registers
5488                  *
5489                  * This goes directly to the tear-down and rebuild of
5490                  * the switch, since we need to do all the recovery as
5491                  * for the Core Reset.
5492                  */
5493                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5494                 i40e_handle_reset_warning(pf);
5495
5496         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5497                 int v;
5498
5499                 /* Find the VSI(s) that requested a re-init */
5500                 dev_info(&pf->pdev->dev,
5501                          "VSI reinit requested\n");
5502                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5503                         struct i40e_vsi *vsi = pf->vsi[v];
5504
5505                         if (vsi != NULL &&
5506                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5507                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5508                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5509                         }
5510                 }
5511         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5512                 int v;
5513
5514                 /* Find the VSI(s) that needs to be brought down */
5515                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5516                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5517                         struct i40e_vsi *vsi = pf->vsi[v];
5518
5519                         if (vsi != NULL &&
5520                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5521                                 set_bit(__I40E_DOWN, &vsi->state);
5522                                 i40e_down(vsi);
5523                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5524                         }
5525                 }
5526         } else {
5527                 dev_info(&pf->pdev->dev,
5528                          "bad reset request 0x%08x\n", reset_flags);
5529         }
5530 }
5531
5532 #ifdef CONFIG_I40E_DCB
5533 /**
5534  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5535  * @pf: board private structure
5536  * @old_cfg: current DCB config
5537  * @new_cfg: new DCB config
5538  **/
5539 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5540                             struct i40e_dcbx_config *old_cfg,
5541                             struct i40e_dcbx_config *new_cfg)
5542 {
5543         bool need_reconfig = false;
5544
5545         /* Check if ETS configuration has changed */
5546         if (memcmp(&new_cfg->etscfg,
5547                    &old_cfg->etscfg,
5548                    sizeof(new_cfg->etscfg))) {
5549                 /* If Priority Table has changed reconfig is needed */
5550                 if (memcmp(&new_cfg->etscfg.prioritytable,
5551                            &old_cfg->etscfg.prioritytable,
5552                            sizeof(new_cfg->etscfg.prioritytable))) {
5553                         need_reconfig = true;
5554                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5555                 }
5556
5557                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5558                            &old_cfg->etscfg.tcbwtable,
5559                            sizeof(new_cfg->etscfg.tcbwtable)))
5560                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5561
5562                 if (memcmp(&new_cfg->etscfg.tsatable,
5563                            &old_cfg->etscfg.tsatable,
5564                            sizeof(new_cfg->etscfg.tsatable)))
5565                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5566         }
5567
5568         /* Check if PFC configuration has changed */
5569         if (memcmp(&new_cfg->pfc,
5570                    &old_cfg->pfc,
5571                    sizeof(new_cfg->pfc))) {
5572                 need_reconfig = true;
5573                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5574         }
5575
5576         /* Check if APP Table has changed */
5577         if (memcmp(&new_cfg->app,
5578                    &old_cfg->app,
5579                    sizeof(new_cfg->app))) {
5580                 need_reconfig = true;
5581                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5582         }
5583
5584         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5585         return need_reconfig;
5586 }
5587
5588 /**
5589  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5590  * @pf: board private structure
5591  * @e: event info posted on ARQ
5592  **/
5593 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5594                                   struct i40e_arq_event_info *e)
5595 {
5596         struct i40e_aqc_lldp_get_mib *mib =
5597                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5598         struct i40e_hw *hw = &pf->hw;
5599         struct i40e_dcbx_config tmp_dcbx_cfg;
5600         bool need_reconfig = false;
5601         int ret = 0;
5602         u8 type;
5603
5604         /* Not DCB capable or capability disabled */
5605         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5606                 return ret;
5607
5608         /* Ignore if event is not for Nearest Bridge */
5609         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5610                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5611         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5612         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5613                 return ret;
5614
5615         /* Check MIB Type and return if event for Remote MIB update */
5616         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5617         dev_dbg(&pf->pdev->dev,
5618                 "LLDP event mib type %s\n", type ? "remote" : "local");
5619         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5620                 /* Update the remote cached instance and return */
5621                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5622                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5623                                 &hw->remote_dcbx_config);
5624                 goto exit;
5625         }
5626
5627         /* Store the old configuration */
5628         tmp_dcbx_cfg = hw->local_dcbx_config;
5629
5630         /* Reset the old DCBx configuration data */
5631         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5632         /* Get updated DCBX data from firmware */
5633         ret = i40e_get_dcb_config(&pf->hw);
5634         if (ret) {
5635                 dev_info(&pf->pdev->dev,
5636                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5637                          i40e_stat_str(&pf->hw, ret),
5638                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5639                 goto exit;
5640         }
5641
5642         /* No change detected in DCBX configs */
5643         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5644                     sizeof(tmp_dcbx_cfg))) {
5645                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5646                 goto exit;
5647         }
5648
5649         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5650                                                &hw->local_dcbx_config);
5651
5652         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5653
5654         if (!need_reconfig)
5655                 goto exit;
5656
5657         /* Enable DCB tagging only when more than one TC */
5658         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5659                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5660         else
5661                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5662
5663         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5664         /* Reconfiguration needed quiesce all VSIs */
5665         i40e_pf_quiesce_all_vsi(pf);
5666
5667         /* Changes in configuration update VEB/VSI */
5668         i40e_dcb_reconfigure(pf);
5669
5670         ret = i40e_resume_port_tx(pf);
5671
5672         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5673         /* In case of error no point in resuming VSIs */
5674         if (ret)
5675                 goto exit;
5676
5677         /* Wait for the PF's Tx queues to be disabled */
5678         ret = i40e_pf_wait_txq_disabled(pf);
5679         if (ret) {
5680                 /* Schedule PF reset to recover */
5681                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5682                 i40e_service_event_schedule(pf);
5683         } else {
5684                 i40e_pf_unquiesce_all_vsi(pf);
5685         }
5686
5687 exit:
5688         return ret;
5689 }
5690 #endif /* CONFIG_I40E_DCB */
5691
5692 /**
5693  * i40e_do_reset_safe - Protected reset path for userland calls.
5694  * @pf: board private structure
5695  * @reset_flags: which reset is requested
5696  *
5697  **/
5698 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5699 {
5700         rtnl_lock();
5701         i40e_do_reset(pf, reset_flags);
5702         rtnl_unlock();
5703 }
5704
5705 /**
5706  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5707  * @pf: board private structure
5708  * @e: event info posted on ARQ
5709  *
5710  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5711  * and VF queues
5712  **/
5713 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5714                                            struct i40e_arq_event_info *e)
5715 {
5716         struct i40e_aqc_lan_overflow *data =
5717                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5718         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5719         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5720         struct i40e_hw *hw = &pf->hw;
5721         struct i40e_vf *vf;
5722         u16 vf_id;
5723
5724         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5725                 queue, qtx_ctl);
5726
5727         /* Queue belongs to VF, find the VF and issue VF reset */
5728         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5729             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5730                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5731                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5732                 vf_id -= hw->func_caps.vf_base_id;
5733                 vf = &pf->vf[vf_id];
5734                 i40e_vc_notify_vf_reset(vf);
5735                 /* Allow VF to process pending reset notification */
5736                 msleep(20);
5737                 i40e_reset_vf(vf, false);
5738         }
5739 }
5740
5741 /**
5742  * i40e_service_event_complete - Finish up the service event
5743  * @pf: board private structure
5744  **/
5745 static void i40e_service_event_complete(struct i40e_pf *pf)
5746 {
5747         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5748
5749         /* flush memory to make sure state is correct before next watchog */
5750         smp_mb__before_atomic();
5751         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5752 }
5753
5754 /**
5755  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5756  * @pf: board private structure
5757  **/
5758 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5759 {
5760         u32 val, fcnt_prog;
5761
5762         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5763         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5764         return fcnt_prog;
5765 }
5766
5767 /**
5768  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5769  * @pf: board private structure
5770  **/
5771 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5772 {
5773         u32 val, fcnt_prog;
5774
5775         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5776         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5777                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5778                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5779         return fcnt_prog;
5780 }
5781
5782 /**
5783  * i40e_get_global_fd_count - Get total FD filters programmed on device
5784  * @pf: board private structure
5785  **/
5786 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5787 {
5788         u32 val, fcnt_prog;
5789
5790         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5791         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5792                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5793                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5794         return fcnt_prog;
5795 }
5796
5797 /**
5798  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5799  * @pf: board private structure
5800  **/
5801 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5802 {
5803         struct i40e_fdir_filter *filter;
5804         u32 fcnt_prog, fcnt_avail;
5805         struct hlist_node *node;
5806
5807         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5808                 return;
5809
5810         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5811          * to re-enable
5812          */
5813         fcnt_prog = i40e_get_global_fd_count(pf);
5814         fcnt_avail = pf->fdir_pf_filter_count;
5815         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5816             (pf->fd_add_err == 0) ||
5817             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5818                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5819                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5820                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5821                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5822                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5823                 }
5824         }
5825         /* Wait for some more space to be available to turn on ATR */
5826         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5827                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5828                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5829                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5830                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5831                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5832                 }
5833         }
5834
5835         /* if hw had a problem adding a filter, delete it */
5836         if (pf->fd_inv > 0) {
5837                 hlist_for_each_entry_safe(filter, node,
5838                                           &pf->fdir_filter_list, fdir_node) {
5839                         if (filter->fd_id == pf->fd_inv) {
5840                                 hlist_del(&filter->fdir_node);
5841                                 kfree(filter);
5842                                 pf->fdir_pf_active_filters--;
5843                         }
5844                 }
5845         }
5846 }
5847
5848 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5849 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5850 /**
5851  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5852  * @pf: board private structure
5853  **/
5854 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5855 {
5856         unsigned long min_flush_time;
5857         int flush_wait_retry = 50;
5858         bool disable_atr = false;
5859         int fd_room;
5860         int reg;
5861
5862         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5863                 return;
5864
5865         if (!time_after(jiffies, pf->fd_flush_timestamp +
5866                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5867                 return;
5868
5869         /* If the flush is happening too quick and we have mostly SB rules we
5870          * should not re-enable ATR for some time.
5871          */
5872         min_flush_time = pf->fd_flush_timestamp +
5873                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5874         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5875
5876         if (!(time_after(jiffies, min_flush_time)) &&
5877             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5878                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5879                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5880                 disable_atr = true;
5881         }
5882
5883         pf->fd_flush_timestamp = jiffies;
5884         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5885         /* flush all filters */
5886         wr32(&pf->hw, I40E_PFQF_CTL_1,
5887              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5888         i40e_flush(&pf->hw);
5889         pf->fd_flush_cnt++;
5890         pf->fd_add_err = 0;
5891         do {
5892                 /* Check FD flush status every 5-6msec */
5893                 usleep_range(5000, 6000);
5894                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5895                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5896                         break;
5897         } while (flush_wait_retry--);
5898         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5899                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5900         } else {
5901                 /* replay sideband filters */
5902                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5903                 if (!disable_atr)
5904                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5905                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5906                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5907                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5908         }
5909
5910 }
5911
5912 /**
5913  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5914  * @pf: board private structure
5915  **/
5916 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5917 {
5918         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5919 }
5920
5921 /* We can see up to 256 filter programming desc in transit if the filters are
5922  * being applied really fast; before we see the first
5923  * filter miss error on Rx queue 0. Accumulating enough error messages before
5924  * reacting will make sure we don't cause flush too often.
5925  */
5926 #define I40E_MAX_FD_PROGRAM_ERROR 256
5927
5928 /**
5929  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5930  * @pf: board private structure
5931  **/
5932 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5933 {
5934
5935         /* if interface is down do nothing */
5936         if (test_bit(__I40E_DOWN, &pf->state))
5937                 return;
5938
5939         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5940                 return;
5941
5942         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5943                 i40e_fdir_flush_and_replay(pf);
5944
5945         i40e_fdir_check_and_reenable(pf);
5946
5947 }
5948
5949 /**
5950  * i40e_vsi_link_event - notify VSI of a link event
5951  * @vsi: vsi to be notified
5952  * @link_up: link up or down
5953  **/
5954 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5955 {
5956         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5957                 return;
5958
5959         switch (vsi->type) {
5960         case I40E_VSI_MAIN:
5961 #ifdef I40E_FCOE
5962         case I40E_VSI_FCOE:
5963 #endif
5964                 if (!vsi->netdev || !vsi->netdev_registered)
5965                         break;
5966
5967                 if (link_up) {
5968                         netif_carrier_on(vsi->netdev);
5969                         netif_tx_wake_all_queues(vsi->netdev);
5970                 } else {
5971                         netif_carrier_off(vsi->netdev);
5972                         netif_tx_stop_all_queues(vsi->netdev);
5973                 }
5974                 break;
5975
5976         case I40E_VSI_SRIOV:
5977         case I40E_VSI_VMDQ2:
5978         case I40E_VSI_CTRL:
5979         case I40E_VSI_MIRROR:
5980         default:
5981                 /* there is no notification for other VSIs */
5982                 break;
5983         }
5984 }
5985
5986 /**
5987  * i40e_veb_link_event - notify elements on the veb of a link event
5988  * @veb: veb to be notified
5989  * @link_up: link up or down
5990  **/
5991 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5992 {
5993         struct i40e_pf *pf;
5994         int i;
5995
5996         if (!veb || !veb->pf)
5997                 return;
5998         pf = veb->pf;
5999
6000         /* depth first... */
6001         for (i = 0; i < I40E_MAX_VEB; i++)
6002                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6003                         i40e_veb_link_event(pf->veb[i], link_up);
6004
6005         /* ... now the local VSIs */
6006         for (i = 0; i < pf->num_alloc_vsi; i++)
6007                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6008                         i40e_vsi_link_event(pf->vsi[i], link_up);
6009 }
6010
6011 /**
6012  * i40e_link_event - Update netif_carrier status
6013  * @pf: board private structure
6014  **/
6015 static void i40e_link_event(struct i40e_pf *pf)
6016 {
6017         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6018         u8 new_link_speed, old_link_speed;
6019         i40e_status status;
6020         bool new_link, old_link;
6021
6022         /* save off old link status information */
6023         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6024
6025         /* set this to force the get_link_status call to refresh state */
6026         pf->hw.phy.get_link_info = true;
6027
6028         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6029
6030         status = i40e_get_link_status(&pf->hw, &new_link);
6031         if (status) {
6032                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6033                         status);
6034                 return;
6035         }
6036
6037         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6038         new_link_speed = pf->hw.phy.link_info.link_speed;
6039
6040         if (new_link == old_link &&
6041             new_link_speed == old_link_speed &&
6042             (test_bit(__I40E_DOWN, &vsi->state) ||
6043              new_link == netif_carrier_ok(vsi->netdev)))
6044                 return;
6045
6046         if (!test_bit(__I40E_DOWN, &vsi->state))
6047                 i40e_print_link_message(vsi, new_link);
6048
6049         /* Notify the base of the switch tree connected to
6050          * the link.  Floating VEBs are not notified.
6051          */
6052         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6053                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6054         else
6055                 i40e_vsi_link_event(vsi, new_link);
6056
6057         if (pf->vf)
6058                 i40e_vc_notify_link_state(pf);
6059
6060         if (pf->flags & I40E_FLAG_PTP)
6061                 i40e_ptp_set_increment(pf);
6062 }
6063
6064 /**
6065  * i40e_watchdog_subtask - periodic checks not using event driven response
6066  * @pf: board private structure
6067  **/
6068 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6069 {
6070         int i;
6071
6072         /* if interface is down do nothing */
6073         if (test_bit(__I40E_DOWN, &pf->state) ||
6074             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6075                 return;
6076
6077         /* make sure we don't do these things too often */
6078         if (time_before(jiffies, (pf->service_timer_previous +
6079                                   pf->service_timer_period)))
6080                 return;
6081         pf->service_timer_previous = jiffies;
6082
6083         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6084                 i40e_link_event(pf);
6085
6086         /* Update the stats for active netdevs so the network stack
6087          * can look at updated numbers whenever it cares to
6088          */
6089         for (i = 0; i < pf->num_alloc_vsi; i++)
6090                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6091                         i40e_update_stats(pf->vsi[i]);
6092
6093         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6094                 /* Update the stats for the active switching components */
6095                 for (i = 0; i < I40E_MAX_VEB; i++)
6096                         if (pf->veb[i])
6097                                 i40e_update_veb_stats(pf->veb[i]);
6098         }
6099
6100         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6101 }
6102
6103 /**
6104  * i40e_reset_subtask - Set up for resetting the device and driver
6105  * @pf: board private structure
6106  **/
6107 static void i40e_reset_subtask(struct i40e_pf *pf)
6108 {
6109         u32 reset_flags = 0;
6110
6111         rtnl_lock();
6112         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6113                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6114                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6115         }
6116         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6117                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6118                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6119         }
6120         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6121                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6122                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6123         }
6124         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6125                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6126                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6127         }
6128         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6129                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6130                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6131         }
6132
6133         /* If there's a recovery already waiting, it takes
6134          * precedence before starting a new reset sequence.
6135          */
6136         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6137                 i40e_handle_reset_warning(pf);
6138                 goto unlock;
6139         }
6140
6141         /* If we're already down or resetting, just bail */
6142         if (reset_flags &&
6143             !test_bit(__I40E_DOWN, &pf->state) &&
6144             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6145                 i40e_do_reset(pf, reset_flags);
6146
6147 unlock:
6148         rtnl_unlock();
6149 }
6150
6151 /**
6152  * i40e_handle_link_event - Handle link event
6153  * @pf: board private structure
6154  * @e: event info posted on ARQ
6155  **/
6156 static void i40e_handle_link_event(struct i40e_pf *pf,
6157                                    struct i40e_arq_event_info *e)
6158 {
6159         struct i40e_aqc_get_link_status *status =
6160                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6161
6162         /* Do a new status request to re-enable LSE reporting
6163          * and load new status information into the hw struct
6164          * This completely ignores any state information
6165          * in the ARQ event info, instead choosing to always
6166          * issue the AQ update link status command.
6167          */
6168         i40e_link_event(pf);
6169
6170         /* check for unqualified module, if link is down */
6171         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6172             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6173             (!(status->link_info & I40E_AQ_LINK_UP)))
6174                 dev_err(&pf->pdev->dev,
6175                         "The driver failed to link because an unqualified module was detected.\n");
6176 }
6177
6178 /**
6179  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6180  * @pf: board private structure
6181  **/
6182 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6183 {
6184         struct i40e_arq_event_info event;
6185         struct i40e_hw *hw = &pf->hw;
6186         u16 pending, i = 0;
6187         i40e_status ret;
6188         u16 opcode;
6189         u32 oldval;
6190         u32 val;
6191
6192         /* Do not run clean AQ when PF reset fails */
6193         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6194                 return;
6195
6196         /* check for error indications */
6197         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6198         oldval = val;
6199         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6200                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6201                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6202         }
6203         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6204                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6205                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6206         }
6207         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6208                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6209                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6210         }
6211         if (oldval != val)
6212                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6213
6214         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6215         oldval = val;
6216         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6217                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6218                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6219         }
6220         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6221                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6222                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6223         }
6224         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6225                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6226                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6227         }
6228         if (oldval != val)
6229                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6230
6231         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6232         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6233         if (!event.msg_buf)
6234                 return;
6235
6236         do {
6237                 ret = i40e_clean_arq_element(hw, &event, &pending);
6238                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6239                         break;
6240                 else if (ret) {
6241                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6242                         break;
6243                 }
6244
6245                 opcode = le16_to_cpu(event.desc.opcode);
6246                 switch (opcode) {
6247
6248                 case i40e_aqc_opc_get_link_status:
6249                         i40e_handle_link_event(pf, &event);
6250                         break;
6251                 case i40e_aqc_opc_send_msg_to_pf:
6252                         ret = i40e_vc_process_vf_msg(pf,
6253                                         le16_to_cpu(event.desc.retval),
6254                                         le32_to_cpu(event.desc.cookie_high),
6255                                         le32_to_cpu(event.desc.cookie_low),
6256                                         event.msg_buf,
6257                                         event.msg_len);
6258                         break;
6259                 case i40e_aqc_opc_lldp_update_mib:
6260                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6261 #ifdef CONFIG_I40E_DCB
6262                         rtnl_lock();
6263                         ret = i40e_handle_lldp_event(pf, &event);
6264                         rtnl_unlock();
6265 #endif /* CONFIG_I40E_DCB */
6266                         break;
6267                 case i40e_aqc_opc_event_lan_overflow:
6268                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6269                         i40e_handle_lan_overflow_event(pf, &event);
6270                         break;
6271                 case i40e_aqc_opc_send_msg_to_peer:
6272                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6273                         break;
6274                 case i40e_aqc_opc_nvm_erase:
6275                 case i40e_aqc_opc_nvm_update:
6276                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6277                         break;
6278                 default:
6279                         dev_info(&pf->pdev->dev,
6280                                  "ARQ Error: Unknown event 0x%04x received\n",
6281                                  opcode);
6282                         break;
6283                 }
6284         } while (pending && (i++ < pf->adminq_work_limit));
6285
6286         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6287         /* re-enable Admin queue interrupt cause */
6288         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6289         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6290         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6291         i40e_flush(hw);
6292
6293         kfree(event.msg_buf);
6294 }
6295
6296 /**
6297  * i40e_verify_eeprom - make sure eeprom is good to use
6298  * @pf: board private structure
6299  **/
6300 static void i40e_verify_eeprom(struct i40e_pf *pf)
6301 {
6302         int err;
6303
6304         err = i40e_diag_eeprom_test(&pf->hw);
6305         if (err) {
6306                 /* retry in case of garbage read */
6307                 err = i40e_diag_eeprom_test(&pf->hw);
6308                 if (err) {
6309                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6310                                  err);
6311                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6312                 }
6313         }
6314
6315         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6316                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6317                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6318         }
6319 }
6320
6321 /**
6322  * i40e_enable_pf_switch_lb
6323  * @pf: pointer to the PF structure
6324  *
6325  * enable switch loop back or die - no point in a return value
6326  **/
6327 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6328 {
6329         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6330         struct i40e_vsi_context ctxt;
6331         int ret;
6332
6333         ctxt.seid = pf->main_vsi_seid;
6334         ctxt.pf_num = pf->hw.pf_id;
6335         ctxt.vf_num = 0;
6336         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6337         if (ret) {
6338                 dev_info(&pf->pdev->dev,
6339                          "couldn't get PF vsi config, err %s aq_err %s\n",
6340                          i40e_stat_str(&pf->hw, ret),
6341                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6342                 return;
6343         }
6344         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6345         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6346         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6347
6348         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6349         if (ret) {
6350                 dev_info(&pf->pdev->dev,
6351                          "update vsi switch failed, err %s aq_err %s\n",
6352                          i40e_stat_str(&pf->hw, ret),
6353                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6354         }
6355 }
6356
6357 /**
6358  * i40e_disable_pf_switch_lb
6359  * @pf: pointer to the PF structure
6360  *
6361  * disable switch loop back or die - no point in a return value
6362  **/
6363 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6364 {
6365         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6366         struct i40e_vsi_context ctxt;
6367         int ret;
6368
6369         ctxt.seid = pf->main_vsi_seid;
6370         ctxt.pf_num = pf->hw.pf_id;
6371         ctxt.vf_num = 0;
6372         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6373         if (ret) {
6374                 dev_info(&pf->pdev->dev,
6375                          "couldn't get PF vsi config, err %s aq_err %s\n",
6376                          i40e_stat_str(&pf->hw, ret),
6377                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6378                 return;
6379         }
6380         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6381         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6382         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6383
6384         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6385         if (ret) {
6386                 dev_info(&pf->pdev->dev,
6387                          "update vsi switch failed, err %s aq_err %s\n",
6388                          i40e_stat_str(&pf->hw, ret),
6389                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6390         }
6391 }
6392
6393 /**
6394  * i40e_config_bridge_mode - Configure the HW bridge mode
6395  * @veb: pointer to the bridge instance
6396  *
6397  * Configure the loop back mode for the LAN VSI that is downlink to the
6398  * specified HW bridge instance. It is expected this function is called
6399  * when a new HW bridge is instantiated.
6400  **/
6401 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6402 {
6403         struct i40e_pf *pf = veb->pf;
6404
6405         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6406                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6407                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6408         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6409                 i40e_disable_pf_switch_lb(pf);
6410         else
6411                 i40e_enable_pf_switch_lb(pf);
6412 }
6413
6414 /**
6415  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6416  * @veb: pointer to the VEB instance
6417  *
6418  * This is a recursive function that first builds the attached VSIs then
6419  * recurses in to build the next layer of VEB.  We track the connections
6420  * through our own index numbers because the seid's from the HW could
6421  * change across the reset.
6422  **/
6423 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6424 {
6425         struct i40e_vsi *ctl_vsi = NULL;
6426         struct i40e_pf *pf = veb->pf;
6427         int v, veb_idx;
6428         int ret;
6429
6430         /* build VSI that owns this VEB, temporarily attached to base VEB */
6431         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6432                 if (pf->vsi[v] &&
6433                     pf->vsi[v]->veb_idx == veb->idx &&
6434                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6435                         ctl_vsi = pf->vsi[v];
6436                         break;
6437                 }
6438         }
6439         if (!ctl_vsi) {
6440                 dev_info(&pf->pdev->dev,
6441                          "missing owner VSI for veb_idx %d\n", veb->idx);
6442                 ret = -ENOENT;
6443                 goto end_reconstitute;
6444         }
6445         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6446                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6447         ret = i40e_add_vsi(ctl_vsi);
6448         if (ret) {
6449                 dev_info(&pf->pdev->dev,
6450                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6451                          veb->idx, ret);
6452                 goto end_reconstitute;
6453         }
6454         i40e_vsi_reset_stats(ctl_vsi);
6455
6456         /* create the VEB in the switch and move the VSI onto the VEB */
6457         ret = i40e_add_veb(veb, ctl_vsi);
6458         if (ret)
6459                 goto end_reconstitute;
6460
6461         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6462                 veb->bridge_mode = BRIDGE_MODE_VEB;
6463         else
6464                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6465         i40e_config_bridge_mode(veb);
6466
6467         /* create the remaining VSIs attached to this VEB */
6468         for (v = 0; v < pf->num_alloc_vsi; v++) {
6469                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6470                         continue;
6471
6472                 if (pf->vsi[v]->veb_idx == veb->idx) {
6473                         struct i40e_vsi *vsi = pf->vsi[v];
6474
6475                         vsi->uplink_seid = veb->seid;
6476                         ret = i40e_add_vsi(vsi);
6477                         if (ret) {
6478                                 dev_info(&pf->pdev->dev,
6479                                          "rebuild of vsi_idx %d failed: %d\n",
6480                                          v, ret);
6481                                 goto end_reconstitute;
6482                         }
6483                         i40e_vsi_reset_stats(vsi);
6484                 }
6485         }
6486
6487         /* create any VEBs attached to this VEB - RECURSION */
6488         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6489                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6490                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6491                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6492                         if (ret)
6493                                 break;
6494                 }
6495         }
6496
6497 end_reconstitute:
6498         return ret;
6499 }
6500
6501 /**
6502  * i40e_get_capabilities - get info about the HW
6503  * @pf: the PF struct
6504  **/
6505 static int i40e_get_capabilities(struct i40e_pf *pf)
6506 {
6507         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6508         u16 data_size;
6509         int buf_len;
6510         int err;
6511
6512         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6513         do {
6514                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6515                 if (!cap_buf)
6516                         return -ENOMEM;
6517
6518                 /* this loads the data into the hw struct for us */
6519                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6520                                             &data_size,
6521                                             i40e_aqc_opc_list_func_capabilities,
6522                                             NULL);
6523                 /* data loaded, buffer no longer needed */
6524                 kfree(cap_buf);
6525
6526                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6527                         /* retry with a larger buffer */
6528                         buf_len = data_size;
6529                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6530                         dev_info(&pf->pdev->dev,
6531                                  "capability discovery failed, err %s aq_err %s\n",
6532                                  i40e_stat_str(&pf->hw, err),
6533                                  i40e_aq_str(&pf->hw,
6534                                              pf->hw.aq.asq_last_status));
6535                         return -ENODEV;
6536                 }
6537         } while (err);
6538
6539         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6540                 dev_info(&pf->pdev->dev,
6541                          "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",
6542                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6543                          pf->hw.func_caps.num_msix_vectors,
6544                          pf->hw.func_caps.num_msix_vectors_vf,
6545                          pf->hw.func_caps.fd_filters_guaranteed,
6546                          pf->hw.func_caps.fd_filters_best_effort,
6547                          pf->hw.func_caps.num_tx_qp,
6548                          pf->hw.func_caps.num_vsis);
6549
6550 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6551                        + pf->hw.func_caps.num_vfs)
6552         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6553                 dev_info(&pf->pdev->dev,
6554                          "got num_vsis %d, setting num_vsis to %d\n",
6555                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6556                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6557         }
6558
6559         return 0;
6560 }
6561
6562 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6563
6564 /**
6565  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6566  * @pf: board private structure
6567  **/
6568 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6569 {
6570         struct i40e_vsi *vsi;
6571         int i;
6572
6573         /* quick workaround for an NVM issue that leaves a critical register
6574          * uninitialized
6575          */
6576         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6577                 static const u32 hkey[] = {
6578                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6579                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6580                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6581                         0x95b3a76d};
6582
6583                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6584                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6585         }
6586
6587         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6588                 return;
6589
6590         /* find existing VSI and see if it needs configuring */
6591         vsi = NULL;
6592         for (i = 0; i < pf->num_alloc_vsi; i++) {
6593                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6594                         vsi = pf->vsi[i];
6595                         break;
6596                 }
6597         }
6598
6599         /* create a new VSI if none exists */
6600         if (!vsi) {
6601                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6602                                      pf->vsi[pf->lan_vsi]->seid, 0);
6603                 if (!vsi) {
6604                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6605                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6606                         return;
6607                 }
6608         }
6609
6610         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6611 }
6612
6613 /**
6614  * i40e_fdir_teardown - release the Flow Director resources
6615  * @pf: board private structure
6616  **/
6617 static void i40e_fdir_teardown(struct i40e_pf *pf)
6618 {
6619         int i;
6620
6621         i40e_fdir_filter_exit(pf);
6622         for (i = 0; i < pf->num_alloc_vsi; i++) {
6623                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6624                         i40e_vsi_release(pf->vsi[i]);
6625                         break;
6626                 }
6627         }
6628 }
6629
6630 /**
6631  * i40e_prep_for_reset - prep for the core to reset
6632  * @pf: board private structure
6633  *
6634  * Close up the VFs and other things in prep for PF Reset.
6635   **/
6636 static void i40e_prep_for_reset(struct i40e_pf *pf)
6637 {
6638         struct i40e_hw *hw = &pf->hw;
6639         i40e_status ret = 0;
6640         u32 v;
6641
6642         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6643         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6644                 return;
6645
6646         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6647
6648         /* quiesce the VSIs and their queues that are not already DOWN */
6649         i40e_pf_quiesce_all_vsi(pf);
6650
6651         for (v = 0; v < pf->num_alloc_vsi; v++) {
6652                 if (pf->vsi[v])
6653                         pf->vsi[v]->seid = 0;
6654         }
6655
6656         i40e_shutdown_adminq(&pf->hw);
6657
6658         /* call shutdown HMC */
6659         if (hw->hmc.hmc_obj) {
6660                 ret = i40e_shutdown_lan_hmc(hw);
6661                 if (ret)
6662                         dev_warn(&pf->pdev->dev,
6663                                  "shutdown_lan_hmc failed: %d\n", ret);
6664         }
6665 }
6666
6667 /**
6668  * i40e_send_version - update firmware with driver version
6669  * @pf: PF struct
6670  */
6671 static void i40e_send_version(struct i40e_pf *pf)
6672 {
6673         struct i40e_driver_version dv;
6674
6675         dv.major_version = DRV_VERSION_MAJOR;
6676         dv.minor_version = DRV_VERSION_MINOR;
6677         dv.build_version = DRV_VERSION_BUILD;
6678         dv.subbuild_version = 0;
6679         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6680         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6681 }
6682
6683 /**
6684  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6685  * @pf: board private structure
6686  * @reinit: if the Main VSI needs to re-initialized.
6687  **/
6688 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6689 {
6690         struct i40e_hw *hw = &pf->hw;
6691         u8 set_fc_aq_fail = 0;
6692         i40e_status ret;
6693         u32 val;
6694         u32 v;
6695
6696         /* Now we wait for GRST to settle out.
6697          * We don't have to delete the VEBs or VSIs from the hw switch
6698          * because the reset will make them disappear.
6699          */
6700         ret = i40e_pf_reset(hw);
6701         if (ret) {
6702                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6703                 set_bit(__I40E_RESET_FAILED, &pf->state);
6704                 goto clear_recovery;
6705         }
6706         pf->pfr_count++;
6707
6708         if (test_bit(__I40E_DOWN, &pf->state))
6709                 goto clear_recovery;
6710         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6711
6712         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6713         ret = i40e_init_adminq(&pf->hw);
6714         if (ret) {
6715                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6716                          i40e_stat_str(&pf->hw, ret),
6717                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6718                 goto clear_recovery;
6719         }
6720
6721         /* re-verify the eeprom if we just had an EMP reset */
6722         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6723                 i40e_verify_eeprom(pf);
6724
6725         i40e_clear_pxe_mode(hw);
6726         ret = i40e_get_capabilities(pf);
6727         if (ret)
6728                 goto end_core_reset;
6729
6730         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6731                                 hw->func_caps.num_rx_qp,
6732                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6733         if (ret) {
6734                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6735                 goto end_core_reset;
6736         }
6737         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6738         if (ret) {
6739                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6740                 goto end_core_reset;
6741         }
6742
6743 #ifdef CONFIG_I40E_DCB
6744         ret = i40e_init_pf_dcb(pf);
6745         if (ret) {
6746                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6747                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6748                 /* Continue without DCB enabled */
6749         }
6750 #endif /* CONFIG_I40E_DCB */
6751 #ifdef I40E_FCOE
6752         i40e_init_pf_fcoe(pf);
6753
6754 #endif
6755         /* do basic switch setup */
6756         ret = i40e_setup_pf_switch(pf, reinit);
6757         if (ret)
6758                 goto end_core_reset;
6759
6760         /* driver is only interested in link up/down and module qualification
6761          * reports from firmware
6762          */
6763         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6764                                        I40E_AQ_EVENT_LINK_UPDOWN |
6765                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6766         if (ret)
6767                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6768                          i40e_stat_str(&pf->hw, ret),
6769                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6770
6771         /* make sure our flow control settings are restored */
6772         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6773         if (ret)
6774                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6775                         i40e_stat_str(&pf->hw, ret),
6776                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6777
6778         /* Rebuild the VSIs and VEBs that existed before reset.
6779          * They are still in our local switch element arrays, so only
6780          * need to rebuild the switch model in the HW.
6781          *
6782          * If there were VEBs but the reconstitution failed, we'll try
6783          * try to recover minimal use by getting the basic PF VSI working.
6784          */
6785         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6786                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6787                 /* find the one VEB connected to the MAC, and find orphans */
6788                 for (v = 0; v < I40E_MAX_VEB; v++) {
6789                         if (!pf->veb[v])
6790                                 continue;
6791
6792                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6793                             pf->veb[v]->uplink_seid == 0) {
6794                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6795
6796                                 if (!ret)
6797                                         continue;
6798
6799                                 /* If Main VEB failed, we're in deep doodoo,
6800                                  * so give up rebuilding the switch and set up
6801                                  * for minimal rebuild of PF VSI.
6802                                  * If orphan failed, we'll report the error
6803                                  * but try to keep going.
6804                                  */
6805                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6806                                         dev_info(&pf->pdev->dev,
6807                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6808                                                  ret);
6809                                         pf->vsi[pf->lan_vsi]->uplink_seid
6810                                                                 = pf->mac_seid;
6811                                         break;
6812                                 } else if (pf->veb[v]->uplink_seid == 0) {
6813                                         dev_info(&pf->pdev->dev,
6814                                                  "rebuild of orphan VEB failed: %d\n",
6815                                                  ret);
6816                                 }
6817                         }
6818                 }
6819         }
6820
6821         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6822                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6823                 /* no VEB, so rebuild only the Main VSI */
6824                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6825                 if (ret) {
6826                         dev_info(&pf->pdev->dev,
6827                                  "rebuild of Main VSI failed: %d\n", ret);
6828                         goto end_core_reset;
6829                 }
6830         }
6831
6832         /* Reconfigure hardware for allowing smaller MSS in the case
6833          * of TSO, so that we avoid the MDD being fired and causing
6834          * a reset in the case of small MSS+TSO.
6835          */
6836 #define I40E_REG_MSS          0x000E64DC
6837 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6838 #define I40E_64BYTE_MSS       0x400000
6839         val = rd32(hw, I40E_REG_MSS);
6840         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6841                 val &= ~I40E_REG_MSS_MIN_MASK;
6842                 val |= I40E_64BYTE_MSS;
6843                 wr32(hw, I40E_REG_MSS, val);
6844         }
6845
6846         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6847             (pf->hw.aq.fw_maj_ver < 4)) {
6848                 msleep(75);
6849                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6850                 if (ret)
6851                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6852                                  i40e_stat_str(&pf->hw, ret),
6853                                  i40e_aq_str(&pf->hw,
6854                                              pf->hw.aq.asq_last_status));
6855         }
6856         /* reinit the misc interrupt */
6857         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6858                 ret = i40e_setup_misc_vector(pf);
6859
6860         /* Add a filter to drop all Flow control frames from any VSI from being
6861          * transmitted. By doing so we stop a malicious VF from sending out
6862          * PAUSE or PFC frames and potentially controlling traffic for other
6863          * PF/VF VSIs.
6864          * The FW can still send Flow control frames if enabled.
6865          */
6866         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6867                                                        pf->main_vsi_seid);
6868
6869         /* restart the VSIs that were rebuilt and running before the reset */
6870         i40e_pf_unquiesce_all_vsi(pf);
6871
6872         if (pf->num_alloc_vfs) {
6873                 for (v = 0; v < pf->num_alloc_vfs; v++)
6874                         i40e_reset_vf(&pf->vf[v], true);
6875         }
6876
6877         /* tell the firmware that we're starting */
6878         i40e_send_version(pf);
6879
6880 end_core_reset:
6881         clear_bit(__I40E_RESET_FAILED, &pf->state);
6882 clear_recovery:
6883         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6884 }
6885
6886 /**
6887  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6888  * @pf: board private structure
6889  *
6890  * Close up the VFs and other things in prep for a Core Reset,
6891  * then get ready to rebuild the world.
6892  **/
6893 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6894 {
6895         i40e_prep_for_reset(pf);
6896         i40e_reset_and_rebuild(pf, false);
6897 }
6898
6899 /**
6900  * i40e_handle_mdd_event
6901  * @pf: pointer to the PF structure
6902  *
6903  * Called from the MDD irq handler to identify possibly malicious vfs
6904  **/
6905 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6906 {
6907         struct i40e_hw *hw = &pf->hw;
6908         bool mdd_detected = false;
6909         bool pf_mdd_detected = false;
6910         struct i40e_vf *vf;
6911         u32 reg;
6912         int i;
6913
6914         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6915                 return;
6916
6917         /* find what triggered the MDD event */
6918         reg = rd32(hw, I40E_GL_MDET_TX);
6919         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6920                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6921                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6922                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6923                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6924                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6925                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6926                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6927                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6928                                 pf->hw.func_caps.base_queue;
6929                 if (netif_msg_tx_err(pf))
6930                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6931                                  event, queue, pf_num, vf_num);
6932                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6933                 mdd_detected = true;
6934         }
6935         reg = rd32(hw, I40E_GL_MDET_RX);
6936         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6937                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6938                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6939                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6940                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6941                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6942                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6943                                 pf->hw.func_caps.base_queue;
6944                 if (netif_msg_rx_err(pf))
6945                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6946                                  event, queue, func);
6947                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6948                 mdd_detected = true;
6949         }
6950
6951         if (mdd_detected) {
6952                 reg = rd32(hw, I40E_PF_MDET_TX);
6953                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6954                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6955                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6956                         pf_mdd_detected = true;
6957                 }
6958                 reg = rd32(hw, I40E_PF_MDET_RX);
6959                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6960                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6961                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6962                         pf_mdd_detected = true;
6963                 }
6964                 /* Queue belongs to the PF, initiate a reset */
6965                 if (pf_mdd_detected) {
6966                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6967                         i40e_service_event_schedule(pf);
6968                 }
6969         }
6970
6971         /* see if one of the VFs needs its hand slapped */
6972         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6973                 vf = &(pf->vf[i]);
6974                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6975                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6976                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6977                         vf->num_mdd_events++;
6978                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6979                                  i);
6980                 }
6981
6982                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6983                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6984                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6985                         vf->num_mdd_events++;
6986                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6987                                  i);
6988                 }
6989
6990                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6991                         dev_info(&pf->pdev->dev,
6992                                  "Too many MDD events on VF %d, disabled\n", i);
6993                         dev_info(&pf->pdev->dev,
6994                                  "Use PF Control I/F to re-enable the VF\n");
6995                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6996                 }
6997         }
6998
6999         /* re-enable mdd interrupt cause */
7000         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7001         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7002         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7003         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7004         i40e_flush(hw);
7005 }
7006
7007 #ifdef CONFIG_I40E_VXLAN
7008 /**
7009  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7010  * @pf: board private structure
7011  **/
7012 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7013 {
7014         struct i40e_hw *hw = &pf->hw;
7015         i40e_status ret;
7016         __be16 port;
7017         int i;
7018
7019         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7020                 return;
7021
7022         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7023
7024         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7025                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7026                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7027                         port = pf->vxlan_ports[i];
7028                         if (port)
7029                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7030                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7031                                                      NULL, NULL);
7032                         else
7033                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7034
7035                         if (ret) {
7036                                 dev_info(&pf->pdev->dev,
7037                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7038                                          port ? "add" : "delete",
7039                                          ntohs(port), i,
7040                                          i40e_stat_str(&pf->hw, ret),
7041                                          i40e_aq_str(&pf->hw,
7042                                                     pf->hw.aq.asq_last_status));
7043                                 pf->vxlan_ports[i] = 0;
7044                         }
7045                 }
7046         }
7047 }
7048
7049 #endif
7050 /**
7051  * i40e_service_task - Run the driver's async subtasks
7052  * @work: pointer to work_struct containing our data
7053  **/
7054 static void i40e_service_task(struct work_struct *work)
7055 {
7056         struct i40e_pf *pf = container_of(work,
7057                                           struct i40e_pf,
7058                                           service_task);
7059         unsigned long start_time = jiffies;
7060
7061         /* don't bother with service tasks if a reset is in progress */
7062         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7063                 i40e_service_event_complete(pf);
7064                 return;
7065         }
7066
7067         i40e_detect_recover_hung(pf);
7068         i40e_reset_subtask(pf);
7069         i40e_handle_mdd_event(pf);
7070         i40e_vc_process_vflr_event(pf);
7071         i40e_watchdog_subtask(pf);
7072         i40e_fdir_reinit_subtask(pf);
7073         i40e_sync_filters_subtask(pf);
7074 #ifdef CONFIG_I40E_VXLAN
7075         i40e_sync_vxlan_filters_subtask(pf);
7076 #endif
7077         i40e_clean_adminq_subtask(pf);
7078
7079         i40e_service_event_complete(pf);
7080
7081         /* If the tasks have taken longer than one timer cycle or there
7082          * is more work to be done, reschedule the service task now
7083          * rather than wait for the timer to tick again.
7084          */
7085         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7086             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7087             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7088             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7089                 i40e_service_event_schedule(pf);
7090 }
7091
7092 /**
7093  * i40e_service_timer - timer callback
7094  * @data: pointer to PF struct
7095  **/
7096 static void i40e_service_timer(unsigned long data)
7097 {
7098         struct i40e_pf *pf = (struct i40e_pf *)data;
7099
7100         mod_timer(&pf->service_timer,
7101                   round_jiffies(jiffies + pf->service_timer_period));
7102         i40e_service_event_schedule(pf);
7103 }
7104
7105 /**
7106  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7107  * @vsi: the VSI being configured
7108  **/
7109 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7110 {
7111         struct i40e_pf *pf = vsi->back;
7112
7113         switch (vsi->type) {
7114         case I40E_VSI_MAIN:
7115                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7116                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7117                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7118                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7119                         vsi->num_q_vectors = pf->num_lan_msix;
7120                 else
7121                         vsi->num_q_vectors = 1;
7122
7123                 break;
7124
7125         case I40E_VSI_FDIR:
7126                 vsi->alloc_queue_pairs = 1;
7127                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7128                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7129                 vsi->num_q_vectors = 1;
7130                 break;
7131
7132         case I40E_VSI_VMDQ2:
7133                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7134                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7135                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7136                 vsi->num_q_vectors = pf->num_vmdq_msix;
7137                 break;
7138
7139         case I40E_VSI_SRIOV:
7140                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7141                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7142                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7143                 break;
7144
7145 #ifdef I40E_FCOE
7146         case I40E_VSI_FCOE:
7147                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7148                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7149                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7150                 vsi->num_q_vectors = pf->num_fcoe_msix;
7151                 break;
7152
7153 #endif /* I40E_FCOE */
7154         default:
7155                 WARN_ON(1);
7156                 return -ENODATA;
7157         }
7158
7159         return 0;
7160 }
7161
7162 /**
7163  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7164  * @type: VSI pointer
7165  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7166  *
7167  * On error: returns error code (negative)
7168  * On success: returns 0
7169  **/
7170 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7171 {
7172         int size;
7173         int ret = 0;
7174
7175         /* allocate memory for both Tx and Rx ring pointers */
7176         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7177         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7178         if (!vsi->tx_rings)
7179                 return -ENOMEM;
7180         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7181
7182         if (alloc_qvectors) {
7183                 /* allocate memory for q_vector pointers */
7184                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7185                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7186                 if (!vsi->q_vectors) {
7187                         ret = -ENOMEM;
7188                         goto err_vectors;
7189                 }
7190         }
7191         return ret;
7192
7193 err_vectors:
7194         kfree(vsi->tx_rings);
7195         return ret;
7196 }
7197
7198 /**
7199  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7200  * @pf: board private structure
7201  * @type: type of VSI
7202  *
7203  * On error: returns error code (negative)
7204  * On success: returns vsi index in PF (positive)
7205  **/
7206 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7207 {
7208         int ret = -ENODEV;
7209         struct i40e_vsi *vsi;
7210         int vsi_idx;
7211         int i;
7212
7213         /* Need to protect the allocation of the VSIs at the PF level */
7214         mutex_lock(&pf->switch_mutex);
7215
7216         /* VSI list may be fragmented if VSI creation/destruction has
7217          * been happening.  We can afford to do a quick scan to look
7218          * for any free VSIs in the list.
7219          *
7220          * find next empty vsi slot, looping back around if necessary
7221          */
7222         i = pf->next_vsi;
7223         while (i < pf->num_alloc_vsi && pf->vsi[i])
7224                 i++;
7225         if (i >= pf->num_alloc_vsi) {
7226                 i = 0;
7227                 while (i < pf->next_vsi && pf->vsi[i])
7228                         i++;
7229         }
7230
7231         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7232                 vsi_idx = i;             /* Found one! */
7233         } else {
7234                 ret = -ENODEV;
7235                 goto unlock_pf;  /* out of VSI slots! */
7236         }
7237         pf->next_vsi = ++i;
7238
7239         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7240         if (!vsi) {
7241                 ret = -ENOMEM;
7242                 goto unlock_pf;
7243         }
7244         vsi->type = type;
7245         vsi->back = pf;
7246         set_bit(__I40E_DOWN, &vsi->state);
7247         vsi->flags = 0;
7248         vsi->idx = vsi_idx;
7249         vsi->rx_itr_setting = pf->rx_itr_default;
7250         vsi->tx_itr_setting = pf->tx_itr_default;
7251         vsi->int_rate_limit = 0;
7252         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7253                                 pf->rss_table_size : 64;
7254         vsi->netdev_registered = false;
7255         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7256         INIT_LIST_HEAD(&vsi->mac_filter_list);
7257         vsi->irqs_ready = false;
7258
7259         ret = i40e_set_num_rings_in_vsi(vsi);
7260         if (ret)
7261                 goto err_rings;
7262
7263         ret = i40e_vsi_alloc_arrays(vsi, true);
7264         if (ret)
7265                 goto err_rings;
7266
7267         /* Setup default MSIX irq handler for VSI */
7268         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7269
7270         /* Initialize VSI lock */
7271         spin_lock_init(&vsi->mac_filter_list_lock);
7272         pf->vsi[vsi_idx] = vsi;
7273         ret = vsi_idx;
7274         goto unlock_pf;
7275
7276 err_rings:
7277         pf->next_vsi = i - 1;
7278         kfree(vsi);
7279 unlock_pf:
7280         mutex_unlock(&pf->switch_mutex);
7281         return ret;
7282 }
7283
7284 /**
7285  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7286  * @type: VSI pointer
7287  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7288  *
7289  * On error: returns error code (negative)
7290  * On success: returns 0
7291  **/
7292 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7293 {
7294         /* free the ring and vector containers */
7295         if (free_qvectors) {
7296                 kfree(vsi->q_vectors);
7297                 vsi->q_vectors = NULL;
7298         }
7299         kfree(vsi->tx_rings);
7300         vsi->tx_rings = NULL;
7301         vsi->rx_rings = NULL;
7302 }
7303
7304 /**
7305  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7306  * and lookup table
7307  * @vsi: Pointer to VSI structure
7308  */
7309 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7310 {
7311         if (!vsi)
7312                 return;
7313
7314         kfree(vsi->rss_hkey_user);
7315         vsi->rss_hkey_user = NULL;
7316
7317         kfree(vsi->rss_lut_user);
7318         vsi->rss_lut_user = NULL;
7319 }
7320
7321 /**
7322  * i40e_vsi_clear - Deallocate the VSI provided
7323  * @vsi: the VSI being un-configured
7324  **/
7325 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7326 {
7327         struct i40e_pf *pf;
7328
7329         if (!vsi)
7330                 return 0;
7331
7332         if (!vsi->back)
7333                 goto free_vsi;
7334         pf = vsi->back;
7335
7336         mutex_lock(&pf->switch_mutex);
7337         if (!pf->vsi[vsi->idx]) {
7338                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7339                         vsi->idx, vsi->idx, vsi, vsi->type);
7340                 goto unlock_vsi;
7341         }
7342
7343         if (pf->vsi[vsi->idx] != vsi) {
7344                 dev_err(&pf->pdev->dev,
7345                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7346                         pf->vsi[vsi->idx]->idx,
7347                         pf->vsi[vsi->idx],
7348                         pf->vsi[vsi->idx]->type,
7349                         vsi->idx, vsi, vsi->type);
7350                 goto unlock_vsi;
7351         }
7352
7353         /* updates the PF for this cleared vsi */
7354         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7355         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7356
7357         i40e_vsi_free_arrays(vsi, true);
7358         i40e_clear_rss_config_user(vsi);
7359
7360         pf->vsi[vsi->idx] = NULL;
7361         if (vsi->idx < pf->next_vsi)
7362                 pf->next_vsi = vsi->idx;
7363
7364 unlock_vsi:
7365         mutex_unlock(&pf->switch_mutex);
7366 free_vsi:
7367         kfree(vsi);
7368
7369         return 0;
7370 }
7371
7372 /**
7373  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7374  * @vsi: the VSI being cleaned
7375  **/
7376 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7377 {
7378         int i;
7379
7380         if (vsi->tx_rings && vsi->tx_rings[0]) {
7381                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7382                         kfree_rcu(vsi->tx_rings[i], rcu);
7383                         vsi->tx_rings[i] = NULL;
7384                         vsi->rx_rings[i] = NULL;
7385                 }
7386         }
7387 }
7388
7389 /**
7390  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7391  * @vsi: the VSI being configured
7392  **/
7393 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7394 {
7395         struct i40e_ring *tx_ring, *rx_ring;
7396         struct i40e_pf *pf = vsi->back;
7397         int i;
7398
7399         /* Set basic values in the rings to be used later during open() */
7400         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7401                 /* allocate space for both Tx and Rx in one shot */
7402                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7403                 if (!tx_ring)
7404                         goto err_out;
7405
7406                 tx_ring->queue_index = i;
7407                 tx_ring->reg_idx = vsi->base_queue + i;
7408                 tx_ring->ring_active = false;
7409                 tx_ring->vsi = vsi;
7410                 tx_ring->netdev = vsi->netdev;
7411                 tx_ring->dev = &pf->pdev->dev;
7412                 tx_ring->count = vsi->num_desc;
7413                 tx_ring->size = 0;
7414                 tx_ring->dcb_tc = 0;
7415                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7416                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7417                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7418                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7419                 vsi->tx_rings[i] = tx_ring;
7420
7421                 rx_ring = &tx_ring[1];
7422                 rx_ring->queue_index = i;
7423                 rx_ring->reg_idx = vsi->base_queue + i;
7424                 rx_ring->ring_active = false;
7425                 rx_ring->vsi = vsi;
7426                 rx_ring->netdev = vsi->netdev;
7427                 rx_ring->dev = &pf->pdev->dev;
7428                 rx_ring->count = vsi->num_desc;
7429                 rx_ring->size = 0;
7430                 rx_ring->dcb_tc = 0;
7431                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7432                         set_ring_16byte_desc_enabled(rx_ring);
7433                 else
7434                         clear_ring_16byte_desc_enabled(rx_ring);
7435                 vsi->rx_rings[i] = rx_ring;
7436         }
7437
7438         return 0;
7439
7440 err_out:
7441         i40e_vsi_clear_rings(vsi);
7442         return -ENOMEM;
7443 }
7444
7445 /**
7446  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7447  * @pf: board private structure
7448  * @vectors: the number of MSI-X vectors to request
7449  *
7450  * Returns the number of vectors reserved, or error
7451  **/
7452 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7453 {
7454         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7455                                         I40E_MIN_MSIX, vectors);
7456         if (vectors < 0) {
7457                 dev_info(&pf->pdev->dev,
7458                          "MSI-X vector reservation failed: %d\n", vectors);
7459                 vectors = 0;
7460         }
7461
7462         return vectors;
7463 }
7464
7465 /**
7466  * i40e_init_msix - Setup the MSIX capability
7467  * @pf: board private structure
7468  *
7469  * Work with the OS to set up the MSIX vectors needed.
7470  *
7471  * Returns the number of vectors reserved or negative on failure
7472  **/
7473 static int i40e_init_msix(struct i40e_pf *pf)
7474 {
7475         struct i40e_hw *hw = &pf->hw;
7476         int vectors_left;
7477         int v_budget, i;
7478         int v_actual;
7479
7480         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7481                 return -ENODEV;
7482
7483         /* The number of vectors we'll request will be comprised of:
7484          *   - Add 1 for "other" cause for Admin Queue events, etc.
7485          *   - The number of LAN queue pairs
7486          *      - Queues being used for RSS.
7487          *              We don't need as many as max_rss_size vectors.
7488          *              use rss_size instead in the calculation since that
7489          *              is governed by number of cpus in the system.
7490          *      - assumes symmetric Tx/Rx pairing
7491          *   - The number of VMDq pairs
7492 #ifdef I40E_FCOE
7493          *   - The number of FCOE qps.
7494 #endif
7495          * Once we count this up, try the request.
7496          *
7497          * If we can't get what we want, we'll simplify to nearly nothing
7498          * and try again.  If that still fails, we punt.
7499          */
7500         vectors_left = hw->func_caps.num_msix_vectors;
7501         v_budget = 0;
7502
7503         /* reserve one vector for miscellaneous handler */
7504         if (vectors_left) {
7505                 v_budget++;
7506                 vectors_left--;
7507         }
7508
7509         /* reserve vectors for the main PF traffic queues */
7510         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7511         vectors_left -= pf->num_lan_msix;
7512         v_budget += pf->num_lan_msix;
7513
7514         /* reserve one vector for sideband flow director */
7515         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7516                 if (vectors_left) {
7517                         v_budget++;
7518                         vectors_left--;
7519                 } else {
7520                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7521                 }
7522         }
7523
7524 #ifdef I40E_FCOE
7525         /* can we reserve enough for FCoE? */
7526         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7527                 if (!vectors_left)
7528                         pf->num_fcoe_msix = 0;
7529                 else if (vectors_left >= pf->num_fcoe_qps)
7530                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7531                 else
7532                         pf->num_fcoe_msix = 1;
7533                 v_budget += pf->num_fcoe_msix;
7534                 vectors_left -= pf->num_fcoe_msix;
7535         }
7536
7537 #endif
7538         /* any vectors left over go for VMDq support */
7539         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7540                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7541                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7542
7543                 /* if we're short on vectors for what's desired, we limit
7544                  * the queues per vmdq.  If this is still more than are
7545                  * available, the user will need to change the number of
7546                  * queues/vectors used by the PF later with the ethtool
7547                  * channels command
7548                  */
7549                 if (vmdq_vecs < vmdq_vecs_wanted)
7550                         pf->num_vmdq_qps = 1;
7551                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7552
7553                 v_budget += vmdq_vecs;
7554                 vectors_left -= vmdq_vecs;
7555         }
7556
7557         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7558                                    GFP_KERNEL);
7559         if (!pf->msix_entries)
7560                 return -ENOMEM;
7561
7562         for (i = 0; i < v_budget; i++)
7563                 pf->msix_entries[i].entry = i;
7564         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7565
7566         if (v_actual != v_budget) {
7567                 /* If we have limited resources, we will start with no vectors
7568                  * for the special features and then allocate vectors to some
7569                  * of these features based on the policy and at the end disable
7570                  * the features that did not get any vectors.
7571                  */
7572 #ifdef I40E_FCOE
7573                 pf->num_fcoe_qps = 0;
7574                 pf->num_fcoe_msix = 0;
7575 #endif
7576                 pf->num_vmdq_msix = 0;
7577         }
7578
7579         if (v_actual < I40E_MIN_MSIX) {
7580                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7581                 kfree(pf->msix_entries);
7582                 pf->msix_entries = NULL;
7583                 return -ENODEV;
7584
7585         } else if (v_actual == I40E_MIN_MSIX) {
7586                 /* Adjust for minimal MSIX use */
7587                 pf->num_vmdq_vsis = 0;
7588                 pf->num_vmdq_qps = 0;
7589                 pf->num_lan_qps = 1;
7590                 pf->num_lan_msix = 1;
7591
7592         } else if (v_actual != v_budget) {
7593                 int vec;
7594
7595                 /* reserve the misc vector */
7596                 vec = v_actual - 1;
7597
7598                 /* Scale vector usage down */
7599                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7600                 pf->num_vmdq_vsis = 1;
7601                 pf->num_vmdq_qps = 1;
7602                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7603
7604                 /* partition out the remaining vectors */
7605                 switch (vec) {
7606                 case 2:
7607                         pf->num_lan_msix = 1;
7608                         break;
7609                 case 3:
7610 #ifdef I40E_FCOE
7611                         /* give one vector to FCoE */
7612                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7613                                 pf->num_lan_msix = 1;
7614                                 pf->num_fcoe_msix = 1;
7615                         }
7616 #else
7617                         pf->num_lan_msix = 2;
7618 #endif
7619                         break;
7620                 default:
7621 #ifdef I40E_FCOE
7622                         /* give one vector to FCoE */
7623                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7624                                 pf->num_fcoe_msix = 1;
7625                                 vec--;
7626                         }
7627 #endif
7628                         /* give the rest to the PF */
7629                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7630                         break;
7631                 }
7632         }
7633
7634         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7635             (pf->num_vmdq_msix == 0)) {
7636                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7637                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7638         }
7639 #ifdef I40E_FCOE
7640
7641         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7642                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7643                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7644         }
7645 #endif
7646         return v_actual;
7647 }
7648
7649 /**
7650  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7651  * @vsi: the VSI being configured
7652  * @v_idx: index of the vector in the vsi struct
7653  *
7654  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7655  **/
7656 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7657 {
7658         struct i40e_q_vector *q_vector;
7659
7660         /* allocate q_vector */
7661         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7662         if (!q_vector)
7663                 return -ENOMEM;
7664
7665         q_vector->vsi = vsi;
7666         q_vector->v_idx = v_idx;
7667         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7668         if (vsi->netdev)
7669                 netif_napi_add(vsi->netdev, &q_vector->napi,
7670                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7671
7672         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7673         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7674
7675         /* tie q_vector and vsi together */
7676         vsi->q_vectors[v_idx] = q_vector;
7677
7678         return 0;
7679 }
7680
7681 /**
7682  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7683  * @vsi: the VSI being configured
7684  *
7685  * We allocate one q_vector per queue interrupt.  If allocation fails we
7686  * return -ENOMEM.
7687  **/
7688 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7689 {
7690         struct i40e_pf *pf = vsi->back;
7691         int v_idx, num_q_vectors;
7692         int err;
7693
7694         /* if not MSIX, give the one vector only to the LAN VSI */
7695         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7696                 num_q_vectors = vsi->num_q_vectors;
7697         else if (vsi == pf->vsi[pf->lan_vsi])
7698                 num_q_vectors = 1;
7699         else
7700                 return -EINVAL;
7701
7702         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7703                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7704                 if (err)
7705                         goto err_out;
7706         }
7707
7708         return 0;
7709
7710 err_out:
7711         while (v_idx--)
7712                 i40e_free_q_vector(vsi, v_idx);
7713
7714         return err;
7715 }
7716
7717 /**
7718  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7719  * @pf: board private structure to initialize
7720  **/
7721 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7722 {
7723         int vectors = 0;
7724         ssize_t size;
7725
7726         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7727                 vectors = i40e_init_msix(pf);
7728                 if (vectors < 0) {
7729                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7730 #ifdef I40E_FCOE
7731                                        I40E_FLAG_FCOE_ENABLED   |
7732 #endif
7733                                        I40E_FLAG_RSS_ENABLED    |
7734                                        I40E_FLAG_DCB_CAPABLE    |
7735                                        I40E_FLAG_SRIOV_ENABLED  |
7736                                        I40E_FLAG_FD_SB_ENABLED  |
7737                                        I40E_FLAG_FD_ATR_ENABLED |
7738                                        I40E_FLAG_VMDQ_ENABLED);
7739
7740                         /* rework the queue expectations without MSIX */
7741                         i40e_determine_queue_usage(pf);
7742                 }
7743         }
7744
7745         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7746             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7747                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7748                 vectors = pci_enable_msi(pf->pdev);
7749                 if (vectors < 0) {
7750                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7751                                  vectors);
7752                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7753                 }
7754                 vectors = 1;  /* one MSI or Legacy vector */
7755         }
7756
7757         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7758                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7759
7760         /* set up vector assignment tracking */
7761         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7762         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7763         if (!pf->irq_pile) {
7764                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7765                 return -ENOMEM;
7766         }
7767         pf->irq_pile->num_entries = vectors;
7768         pf->irq_pile->search_hint = 0;
7769
7770         /* track first vector for misc interrupts, ignore return */
7771         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7772
7773         return 0;
7774 }
7775
7776 /**
7777  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7778  * @pf: board private structure
7779  *
7780  * This sets up the handler for MSIX 0, which is used to manage the
7781  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7782  * when in MSI or Legacy interrupt mode.
7783  **/
7784 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7785 {
7786         struct i40e_hw *hw = &pf->hw;
7787         int err = 0;
7788
7789         /* Only request the irq if this is the first time through, and
7790          * not when we're rebuilding after a Reset
7791          */
7792         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7793                 err = request_irq(pf->msix_entries[0].vector,
7794                                   i40e_intr, 0, pf->int_name, pf);
7795                 if (err) {
7796                         dev_info(&pf->pdev->dev,
7797                                  "request_irq for %s failed: %d\n",
7798                                  pf->int_name, err);
7799                         return -EFAULT;
7800                 }
7801         }
7802
7803         i40e_enable_misc_int_causes(pf);
7804
7805         /* associate no queues to the misc vector */
7806         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7807         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7808
7809         i40e_flush(hw);
7810
7811         i40e_irq_dynamic_enable_icr0(pf);
7812
7813         return err;
7814 }
7815
7816 /**
7817  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7818  * @vsi: vsi structure
7819  * @seed: RSS hash seed
7820  **/
7821 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7822                               u8 *lut, u16 lut_size)
7823 {
7824         struct i40e_aqc_get_set_rss_key_data rss_key;
7825         struct i40e_pf *pf = vsi->back;
7826         struct i40e_hw *hw = &pf->hw;
7827         bool pf_lut = false;
7828         u8 *rss_lut;
7829         int ret, i;
7830
7831         memset(&rss_key, 0, sizeof(rss_key));
7832         memcpy(&rss_key, seed, sizeof(rss_key));
7833
7834         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7835         if (!rss_lut)
7836                 return -ENOMEM;
7837
7838         /* Populate the LUT with max no. of queues in round robin fashion */
7839         for (i = 0; i < vsi->rss_table_size; i++)
7840                 rss_lut[i] = i % vsi->rss_size;
7841
7842         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7843         if (ret) {
7844                 dev_info(&pf->pdev->dev,
7845                          "Cannot set RSS key, err %s aq_err %s\n",
7846                          i40e_stat_str(&pf->hw, ret),
7847                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7848                 goto config_rss_aq_out;
7849         }
7850
7851         if (vsi->type == I40E_VSI_MAIN)
7852                 pf_lut = true;
7853
7854         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7855                                   vsi->rss_table_size);
7856         if (ret)
7857                 dev_info(&pf->pdev->dev,
7858                          "Cannot set RSS lut, err %s aq_err %s\n",
7859                          i40e_stat_str(&pf->hw, ret),
7860                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7861
7862 config_rss_aq_out:
7863         kfree(rss_lut);
7864         return ret;
7865 }
7866
7867 /**
7868  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7869  * @vsi: VSI structure
7870  **/
7871 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7872 {
7873         u8 seed[I40E_HKEY_ARRAY_SIZE];
7874         struct i40e_pf *pf = vsi->back;
7875         u8 *lut;
7876         int ret;
7877
7878         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7879                 return 0;
7880
7881         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7882         if (!lut)
7883                 return -ENOMEM;
7884
7885         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7886         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7887         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7888         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7889         kfree(lut);
7890
7891         return ret;
7892 }
7893
7894 /**
7895  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7896  * @vsi: Pointer to vsi structure
7897  * @seed: RSS hash seed
7898  * @lut: Lookup table
7899  * @lut_size: Lookup table size
7900  *
7901  * Returns 0 on success, negative on failure
7902  **/
7903 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7904                                const u8 *lut, u16 lut_size)
7905 {
7906         struct i40e_pf *pf = vsi->back;
7907         struct i40e_hw *hw = &pf->hw;
7908         u8 i;
7909
7910         /* Fill out hash function seed */
7911         if (seed) {
7912                 u32 *seed_dw = (u32 *)seed;
7913
7914                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7915                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7916         }
7917
7918         if (lut) {
7919                 u32 *lut_dw = (u32 *)lut;
7920
7921                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7922                         return -EINVAL;
7923
7924                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7925                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7926         }
7927         i40e_flush(hw);
7928
7929         return 0;
7930 }
7931
7932 /**
7933  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7934  * @vsi: Pointer to VSI structure
7935  * @seed: Buffer to store the keys
7936  * @lut: Buffer to store the lookup table entries
7937  * @lut_size: Size of buffer to store the lookup table entries
7938  *
7939  * Returns 0 on success, negative on failure
7940  */
7941 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7942                             u8 *lut, u16 lut_size)
7943 {
7944         struct i40e_pf *pf = vsi->back;
7945         struct i40e_hw *hw = &pf->hw;
7946         u16 i;
7947
7948         if (seed) {
7949                 u32 *seed_dw = (u32 *)seed;
7950
7951                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7952                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
7953         }
7954         if (lut) {
7955                 u32 *lut_dw = (u32 *)lut;
7956
7957                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7958                         return -EINVAL;
7959                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7960                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
7961         }
7962
7963         return 0;
7964 }
7965
7966 /**
7967  * i40e_config_rss - Configure RSS keys and lut
7968  * @vsi: Pointer to VSI structure
7969  * @seed: RSS hash seed
7970  * @lut: Lookup table
7971  * @lut_size: Lookup table size
7972  *
7973  * Returns 0 on success, negative on failure
7974  */
7975 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
7976 {
7977         struct i40e_pf *pf = vsi->back;
7978
7979         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7980                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
7981         else
7982                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
7983 }
7984
7985 /**
7986  * i40e_get_rss - Get RSS keys and lut
7987  * @vsi: Pointer to VSI structure
7988  * @seed: Buffer to store the keys
7989  * @lut: Buffer to store the lookup table entries
7990  * lut_size: Size of buffer to store the lookup table entries
7991  *
7992  * Returns 0 on success, negative on failure
7993  */
7994 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
7995 {
7996         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
7997 }
7998
7999 /**
8000  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8001  * @pf: Pointer to board private structure
8002  * @lut: Lookup table
8003  * @rss_table_size: Lookup table size
8004  * @rss_size: Range of queue number for hashing
8005  */
8006 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8007                               u16 rss_table_size, u16 rss_size)
8008 {
8009         u16 i;
8010
8011         for (i = 0; i < rss_table_size; i++)
8012                 lut[i] = i % rss_size;
8013 }
8014
8015 /**
8016  * i40e_pf_config_rss - Prepare for RSS if used
8017  * @pf: board private structure
8018  **/
8019 static int i40e_pf_config_rss(struct i40e_pf *pf)
8020 {
8021         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8022         u8 seed[I40E_HKEY_ARRAY_SIZE];
8023         u8 *lut;
8024         struct i40e_hw *hw = &pf->hw;
8025         u32 reg_val;
8026         u64 hena;
8027         int ret;
8028
8029         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8030         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8031                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8032         hena |= i40e_pf_get_default_rss_hena(pf);
8033
8034         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8035         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8036
8037         /* Determine the RSS table size based on the hardware capabilities */
8038         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8039         reg_val = (pf->rss_table_size == 512) ?
8040                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8041                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8042         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8043
8044         /* Determine the RSS size of the VSI */
8045         if (!vsi->rss_size)
8046                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8047                                       vsi->num_queue_pairs);
8048
8049         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8050         if (!lut)
8051                 return -ENOMEM;
8052
8053         /* Use user configured lut if there is one, otherwise use default */
8054         if (vsi->rss_lut_user)
8055                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8056         else
8057                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8058
8059         /* Use user configured hash key if there is one, otherwise
8060          * use default.
8061          */
8062         if (vsi->rss_hkey_user)
8063                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8064         else
8065                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8066         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8067         kfree(lut);
8068
8069         return ret;
8070 }
8071
8072 /**
8073  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8074  * @pf: board private structure
8075  * @queue_count: the requested queue count for rss.
8076  *
8077  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8078  * count which may be different from the requested queue count.
8079  **/
8080 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8081 {
8082         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8083         int new_rss_size;
8084
8085         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8086                 return 0;
8087
8088         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8089
8090         if (queue_count != vsi->num_queue_pairs) {
8091                 vsi->req_queue_pairs = queue_count;
8092                 i40e_prep_for_reset(pf);
8093
8094                 pf->alloc_rss_size = new_rss_size;
8095
8096                 i40e_reset_and_rebuild(pf, true);
8097
8098                 /* Discard the user configured hash keys and lut, if less
8099                  * queues are enabled.
8100                  */
8101                 if (queue_count < vsi->rss_size) {
8102                         i40e_clear_rss_config_user(vsi);
8103                         dev_dbg(&pf->pdev->dev,
8104                                 "discard user configured hash keys and lut\n");
8105                 }
8106
8107                 /* Reset vsi->rss_size, as number of enabled queues changed */
8108                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8109                                       vsi->num_queue_pairs);
8110
8111                 i40e_pf_config_rss(pf);
8112         }
8113         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->alloc_rss_size);
8114         return pf->alloc_rss_size;
8115 }
8116
8117 /**
8118  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8119  * @pf: board private structure
8120  **/
8121 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8122 {
8123         i40e_status status;
8124         bool min_valid, max_valid;
8125         u32 max_bw, min_bw;
8126
8127         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8128                                            &min_valid, &max_valid);
8129
8130         if (!status) {
8131                 if (min_valid)
8132                         pf->npar_min_bw = min_bw;
8133                 if (max_valid)
8134                         pf->npar_max_bw = max_bw;
8135         }
8136
8137         return status;
8138 }
8139
8140 /**
8141  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8142  * @pf: board private structure
8143  **/
8144 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8145 {
8146         struct i40e_aqc_configure_partition_bw_data bw_data;
8147         i40e_status status;
8148
8149         /* Set the valid bit for this PF */
8150         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8151         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8152         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8153
8154         /* Set the new bandwidths */
8155         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8156
8157         return status;
8158 }
8159
8160 /**
8161  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8162  * @pf: board private structure
8163  **/
8164 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8165 {
8166         /* Commit temporary BW setting to permanent NVM image */
8167         enum i40e_admin_queue_err last_aq_status;
8168         i40e_status ret;
8169         u16 nvm_word;
8170
8171         if (pf->hw.partition_id != 1) {
8172                 dev_info(&pf->pdev->dev,
8173                          "Commit BW only works on partition 1! This is partition %d",
8174                          pf->hw.partition_id);
8175                 ret = I40E_NOT_SUPPORTED;
8176                 goto bw_commit_out;
8177         }
8178
8179         /* Acquire NVM for read access */
8180         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8181         last_aq_status = pf->hw.aq.asq_last_status;
8182         if (ret) {
8183                 dev_info(&pf->pdev->dev,
8184                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8185                          i40e_stat_str(&pf->hw, ret),
8186                          i40e_aq_str(&pf->hw, last_aq_status));
8187                 goto bw_commit_out;
8188         }
8189
8190         /* Read word 0x10 of NVM - SW compatibility word 1 */
8191         ret = i40e_aq_read_nvm(&pf->hw,
8192                                I40E_SR_NVM_CONTROL_WORD,
8193                                0x10, sizeof(nvm_word), &nvm_word,
8194                                false, NULL);
8195         /* Save off last admin queue command status before releasing
8196          * the NVM
8197          */
8198         last_aq_status = pf->hw.aq.asq_last_status;
8199         i40e_release_nvm(&pf->hw);
8200         if (ret) {
8201                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8202                          i40e_stat_str(&pf->hw, ret),
8203                          i40e_aq_str(&pf->hw, last_aq_status));
8204                 goto bw_commit_out;
8205         }
8206
8207         /* Wait a bit for NVM release to complete */
8208         msleep(50);
8209
8210         /* Acquire NVM for write access */
8211         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8212         last_aq_status = pf->hw.aq.asq_last_status;
8213         if (ret) {
8214                 dev_info(&pf->pdev->dev,
8215                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8216                          i40e_stat_str(&pf->hw, ret),
8217                          i40e_aq_str(&pf->hw, last_aq_status));
8218                 goto bw_commit_out;
8219         }
8220         /* Write it back out unchanged to initiate update NVM,
8221          * which will force a write of the shadow (alt) RAM to
8222          * the NVM - thus storing the bandwidth values permanently.
8223          */
8224         ret = i40e_aq_update_nvm(&pf->hw,
8225                                  I40E_SR_NVM_CONTROL_WORD,
8226                                  0x10, sizeof(nvm_word),
8227                                  &nvm_word, true, 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,
8235                          "BW settings NOT SAVED, err %s aq_err %s\n",
8236                          i40e_stat_str(&pf->hw, ret),
8237                          i40e_aq_str(&pf->hw, last_aq_status));
8238 bw_commit_out:
8239
8240         return ret;
8241 }
8242
8243 /**
8244  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8245  * @pf: board private structure to initialize
8246  *
8247  * i40e_sw_init initializes the Adapter private data structure.
8248  * Fields are initialized based on PCI device information and
8249  * OS network device settings (MTU size).
8250  **/
8251 static int i40e_sw_init(struct i40e_pf *pf)
8252 {
8253         int err = 0;
8254         int size;
8255
8256         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8257                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8258         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8259         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8260                 if (I40E_DEBUG_USER & debug)
8261                         pf->hw.debug_mask = debug;
8262                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8263                                                 I40E_DEFAULT_MSG_ENABLE);
8264         }
8265
8266         /* Set default capability flags */
8267         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8268                     I40E_FLAG_MSI_ENABLED     |
8269                     I40E_FLAG_LINK_POLLING_ENABLED |
8270                     I40E_FLAG_MSIX_ENABLED;
8271
8272         if (iommu_present(&pci_bus_type))
8273                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8274         else
8275                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8276
8277         /* Set default ITR */
8278         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8279         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8280
8281         /* Depending on PF configurations, it is possible that the RSS
8282          * maximum might end up larger than the available queues
8283          */
8284         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8285         pf->alloc_rss_size = 1;
8286         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8287         pf->rss_size_max = min_t(int, pf->rss_size_max,
8288                                  pf->hw.func_caps.num_tx_qp);
8289         if (pf->hw.func_caps.rss) {
8290                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8291                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8292                                            num_online_cpus());
8293         }
8294
8295         /* MFP mode enabled */
8296         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8297                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8298                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8299                 if (i40e_get_npar_bw_setting(pf))
8300                         dev_warn(&pf->pdev->dev,
8301                                  "Could not get NPAR bw settings\n");
8302                 else
8303                         dev_info(&pf->pdev->dev,
8304                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8305                                  pf->npar_min_bw, pf->npar_max_bw);
8306         }
8307
8308         /* FW/NVM is not yet fixed in this regard */
8309         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8310             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8311                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8312                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8313                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8314                     pf->hw.num_partitions > 1)
8315                         dev_info(&pf->pdev->dev,
8316                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8317                 else
8318                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8319                 pf->fdir_pf_filter_count =
8320                                  pf->hw.func_caps.fd_filters_guaranteed;
8321                 pf->hw.fdir_shared_filter_count =
8322                                  pf->hw.func_caps.fd_filters_best_effort;
8323         }
8324
8325         if (pf->hw.func_caps.vmdq) {
8326                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8327                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8328                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8329         }
8330
8331 #ifdef I40E_FCOE
8332         i40e_init_pf_fcoe(pf);
8333
8334 #endif /* I40E_FCOE */
8335 #ifdef CONFIG_PCI_IOV
8336         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8337                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8338                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8339                 pf->num_req_vfs = min_t(int,
8340                                         pf->hw.func_caps.num_vfs,
8341                                         I40E_MAX_VF_COUNT);
8342         }
8343 #endif /* CONFIG_PCI_IOV */
8344         if (pf->hw.mac.type == I40E_MAC_X722) {
8345                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8346                              I40E_FLAG_128_QP_RSS_CAPABLE |
8347                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8348                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8349                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8350                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8351         }
8352         pf->eeprom_version = 0xDEAD;
8353         pf->lan_veb = I40E_NO_VEB;
8354         pf->lan_vsi = I40E_NO_VSI;
8355
8356         /* By default FW has this off for performance reasons */
8357         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8358
8359         /* set up queue assignment tracking */
8360         size = sizeof(struct i40e_lump_tracking)
8361                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8362         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8363         if (!pf->qp_pile) {
8364                 err = -ENOMEM;
8365                 goto sw_init_done;
8366         }
8367         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8368         pf->qp_pile->search_hint = 0;
8369
8370         pf->tx_timeout_recovery_level = 1;
8371
8372         mutex_init(&pf->switch_mutex);
8373
8374         /* If NPAR is enabled nudge the Tx scheduler */
8375         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8376                 i40e_set_npar_bw_setting(pf);
8377
8378 sw_init_done:
8379         return err;
8380 }
8381
8382 /**
8383  * i40e_set_ntuple - set the ntuple feature flag and take action
8384  * @pf: board private structure to initialize
8385  * @features: the feature set that the stack is suggesting
8386  *
8387  * returns a bool to indicate if reset needs to happen
8388  **/
8389 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8390 {
8391         bool need_reset = false;
8392
8393         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8394          * the state changed, we need to reset.
8395          */
8396         if (features & NETIF_F_NTUPLE) {
8397                 /* Enable filters and mark for reset */
8398                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8399                         need_reset = true;
8400                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8401         } else {
8402                 /* turn off filters, mark for reset and clear SW filter list */
8403                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8404                         need_reset = true;
8405                         i40e_fdir_filter_exit(pf);
8406                 }
8407                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8408                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8409                 /* reset fd counters */
8410                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8411                 pf->fdir_pf_active_filters = 0;
8412                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8413                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8414                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8415                 /* if ATR was auto disabled it can be re-enabled. */
8416                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8417                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8418                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8419         }
8420         return need_reset;
8421 }
8422
8423 /**
8424  * i40e_set_features - set the netdev feature flags
8425  * @netdev: ptr to the netdev being adjusted
8426  * @features: the feature set that the stack is suggesting
8427  **/
8428 static int i40e_set_features(struct net_device *netdev,
8429                              netdev_features_t features)
8430 {
8431         struct i40e_netdev_priv *np = netdev_priv(netdev);
8432         struct i40e_vsi *vsi = np->vsi;
8433         struct i40e_pf *pf = vsi->back;
8434         bool need_reset;
8435
8436         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8437                 i40e_vlan_stripping_enable(vsi);
8438         else
8439                 i40e_vlan_stripping_disable(vsi);
8440
8441         need_reset = i40e_set_ntuple(pf, features);
8442
8443         if (need_reset)
8444                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8445
8446         return 0;
8447 }
8448
8449 #ifdef CONFIG_I40E_VXLAN
8450 /**
8451  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8452  * @pf: board private structure
8453  * @port: The UDP port to look up
8454  *
8455  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8456  **/
8457 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8458 {
8459         u8 i;
8460
8461         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8462                 if (pf->vxlan_ports[i] == port)
8463                         return i;
8464         }
8465
8466         return i;
8467 }
8468
8469 /**
8470  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8471  * @netdev: This physical port's netdev
8472  * @sa_family: Socket Family that VXLAN is notifying us about
8473  * @port: New UDP port number that VXLAN started listening to
8474  **/
8475 static void i40e_add_vxlan_port(struct net_device *netdev,
8476                                 sa_family_t sa_family, __be16 port)
8477 {
8478         struct i40e_netdev_priv *np = netdev_priv(netdev);
8479         struct i40e_vsi *vsi = np->vsi;
8480         struct i40e_pf *pf = vsi->back;
8481         u8 next_idx;
8482         u8 idx;
8483
8484         if (sa_family == AF_INET6)
8485                 return;
8486
8487         idx = i40e_get_vxlan_port_idx(pf, port);
8488
8489         /* Check if port already exists */
8490         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8491                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8492                             ntohs(port));
8493                 return;
8494         }
8495
8496         /* Now check if there is space to add the new port */
8497         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8498
8499         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8500                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8501                             ntohs(port));
8502                 return;
8503         }
8504
8505         /* New port: add it and mark its index in the bitmap */
8506         pf->vxlan_ports[next_idx] = port;
8507         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8508         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8509 }
8510
8511 /**
8512  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8513  * @netdev: This physical port's netdev
8514  * @sa_family: Socket Family that VXLAN is notifying us about
8515  * @port: UDP port number that VXLAN stopped listening to
8516  **/
8517 static void i40e_del_vxlan_port(struct net_device *netdev,
8518                                 sa_family_t sa_family, __be16 port)
8519 {
8520         struct i40e_netdev_priv *np = netdev_priv(netdev);
8521         struct i40e_vsi *vsi = np->vsi;
8522         struct i40e_pf *pf = vsi->back;
8523         u8 idx;
8524
8525         if (sa_family == AF_INET6)
8526                 return;
8527
8528         idx = i40e_get_vxlan_port_idx(pf, port);
8529
8530         /* Check if port already exists */
8531         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8532                 /* if port exists, set it to 0 (mark for deletion)
8533                  * and make it pending
8534                  */
8535                 pf->vxlan_ports[idx] = 0;
8536                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8537                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8538         } else {
8539                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8540                             ntohs(port));
8541         }
8542 }
8543
8544 #endif
8545 static int i40e_get_phys_port_id(struct net_device *netdev,
8546                                  struct netdev_phys_item_id *ppid)
8547 {
8548         struct i40e_netdev_priv *np = netdev_priv(netdev);
8549         struct i40e_pf *pf = np->vsi->back;
8550         struct i40e_hw *hw = &pf->hw;
8551
8552         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8553                 return -EOPNOTSUPP;
8554
8555         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8556         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8557
8558         return 0;
8559 }
8560
8561 /**
8562  * i40e_ndo_fdb_add - add an entry to the hardware database
8563  * @ndm: the input from the stack
8564  * @tb: pointer to array of nladdr (unused)
8565  * @dev: the net device pointer
8566  * @addr: the MAC address entry being added
8567  * @flags: instructions from stack about fdb operation
8568  */
8569 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8570                             struct net_device *dev,
8571                             const unsigned char *addr, u16 vid,
8572                             u16 flags)
8573 {
8574         struct i40e_netdev_priv *np = netdev_priv(dev);
8575         struct i40e_pf *pf = np->vsi->back;
8576         int err = 0;
8577
8578         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8579                 return -EOPNOTSUPP;
8580
8581         if (vid) {
8582                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8583                 return -EINVAL;
8584         }
8585
8586         /* Hardware does not support aging addresses so if a
8587          * ndm_state is given only allow permanent addresses
8588          */
8589         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8590                 netdev_info(dev, "FDB only supports static addresses\n");
8591                 return -EINVAL;
8592         }
8593
8594         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8595                 err = dev_uc_add_excl(dev, addr);
8596         else if (is_multicast_ether_addr(addr))
8597                 err = dev_mc_add_excl(dev, addr);
8598         else
8599                 err = -EINVAL;
8600
8601         /* Only return duplicate errors if NLM_F_EXCL is set */
8602         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8603                 err = 0;
8604
8605         return err;
8606 }
8607
8608 /**
8609  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8610  * @dev: the netdev being configured
8611  * @nlh: RTNL message
8612  *
8613  * Inserts a new hardware bridge if not already created and
8614  * enables the bridging mode requested (VEB or VEPA). If the
8615  * hardware bridge has already been inserted and the request
8616  * is to change the mode then that requires a PF reset to
8617  * allow rebuild of the components with required hardware
8618  * bridge mode enabled.
8619  **/
8620 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8621                                    struct nlmsghdr *nlh,
8622                                    u16 flags)
8623 {
8624         struct i40e_netdev_priv *np = netdev_priv(dev);
8625         struct i40e_vsi *vsi = np->vsi;
8626         struct i40e_pf *pf = vsi->back;
8627         struct i40e_veb *veb = NULL;
8628         struct nlattr *attr, *br_spec;
8629         int i, rem;
8630
8631         /* Only for PF VSI for now */
8632         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8633                 return -EOPNOTSUPP;
8634
8635         /* Find the HW bridge for PF VSI */
8636         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8637                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8638                         veb = pf->veb[i];
8639         }
8640
8641         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8642
8643         nla_for_each_nested(attr, br_spec, rem) {
8644                 __u16 mode;
8645
8646                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8647                         continue;
8648
8649                 mode = nla_get_u16(attr);
8650                 if ((mode != BRIDGE_MODE_VEPA) &&
8651                     (mode != BRIDGE_MODE_VEB))
8652                         return -EINVAL;
8653
8654                 /* Insert a new HW bridge */
8655                 if (!veb) {
8656                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8657                                              vsi->tc_config.enabled_tc);
8658                         if (veb) {
8659                                 veb->bridge_mode = mode;
8660                                 i40e_config_bridge_mode(veb);
8661                         } else {
8662                                 /* No Bridge HW offload available */
8663                                 return -ENOENT;
8664                         }
8665                         break;
8666                 } else if (mode != veb->bridge_mode) {
8667                         /* Existing HW bridge but different mode needs reset */
8668                         veb->bridge_mode = mode;
8669                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8670                         if (mode == BRIDGE_MODE_VEB)
8671                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8672                         else
8673                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8674                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8675                         break;
8676                 }
8677         }
8678
8679         return 0;
8680 }
8681
8682 /**
8683  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8684  * @skb: skb buff
8685  * @pid: process id
8686  * @seq: RTNL message seq #
8687  * @dev: the netdev being configured
8688  * @filter_mask: unused
8689  * @nlflags: netlink flags passed in
8690  *
8691  * Return the mode in which the hardware bridge is operating in
8692  * i.e VEB or VEPA.
8693  **/
8694 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8695                                    struct net_device *dev,
8696                                    u32 __always_unused filter_mask,
8697                                    int nlflags)
8698 {
8699         struct i40e_netdev_priv *np = netdev_priv(dev);
8700         struct i40e_vsi *vsi = np->vsi;
8701         struct i40e_pf *pf = vsi->back;
8702         struct i40e_veb *veb = NULL;
8703         int i;
8704
8705         /* Only for PF VSI for now */
8706         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8707                 return -EOPNOTSUPP;
8708
8709         /* Find the HW bridge for the PF VSI */
8710         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8711                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8712                         veb = pf->veb[i];
8713         }
8714
8715         if (!veb)
8716                 return 0;
8717
8718         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8719                                        nlflags, 0, 0, filter_mask, NULL);
8720 }
8721
8722 #define I40E_MAX_TUNNEL_HDR_LEN 80
8723 /**
8724  * i40e_features_check - Validate encapsulated packet conforms to limits
8725  * @skb: skb buff
8726  * @dev: This physical port's netdev
8727  * @features: Offload features that the stack believes apply
8728  **/
8729 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8730                                              struct net_device *dev,
8731                                              netdev_features_t features)
8732 {
8733         if (skb->encapsulation &&
8734             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8735              I40E_MAX_TUNNEL_HDR_LEN))
8736                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8737
8738         return features;
8739 }
8740
8741 static const struct net_device_ops i40e_netdev_ops = {
8742         .ndo_open               = i40e_open,
8743         .ndo_stop               = i40e_close,
8744         .ndo_start_xmit         = i40e_lan_xmit_frame,
8745         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8746         .ndo_set_rx_mode        = i40e_set_rx_mode,
8747         .ndo_validate_addr      = eth_validate_addr,
8748         .ndo_set_mac_address    = i40e_set_mac,
8749         .ndo_change_mtu         = i40e_change_mtu,
8750         .ndo_do_ioctl           = i40e_ioctl,
8751         .ndo_tx_timeout         = i40e_tx_timeout,
8752         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8753         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8754 #ifdef CONFIG_NET_POLL_CONTROLLER
8755         .ndo_poll_controller    = i40e_netpoll,
8756 #endif
8757         .ndo_setup_tc           = i40e_setup_tc,
8758 #ifdef I40E_FCOE
8759         .ndo_fcoe_enable        = i40e_fcoe_enable,
8760         .ndo_fcoe_disable       = i40e_fcoe_disable,
8761 #endif
8762         .ndo_set_features       = i40e_set_features,
8763         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8764         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8765         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8766         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8767         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8768         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8769 #ifdef CONFIG_I40E_VXLAN
8770         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8771         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8772 #endif
8773         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8774         .ndo_fdb_add            = i40e_ndo_fdb_add,
8775         .ndo_features_check     = i40e_features_check,
8776         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8777         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8778 };
8779
8780 /**
8781  * i40e_config_netdev - Setup the netdev flags
8782  * @vsi: the VSI being configured
8783  *
8784  * Returns 0 on success, negative value on failure
8785  **/
8786 static int i40e_config_netdev(struct i40e_vsi *vsi)
8787 {
8788         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8789         struct i40e_pf *pf = vsi->back;
8790         struct i40e_hw *hw = &pf->hw;
8791         struct i40e_netdev_priv *np;
8792         struct net_device *netdev;
8793         u8 mac_addr[ETH_ALEN];
8794         int etherdev_size;
8795
8796         etherdev_size = sizeof(struct i40e_netdev_priv);
8797         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8798         if (!netdev)
8799                 return -ENOMEM;
8800
8801         vsi->netdev = netdev;
8802         np = netdev_priv(netdev);
8803         np->vsi = vsi;
8804
8805         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8806                                   NETIF_F_GSO_UDP_TUNNEL |
8807                                   NETIF_F_GSO_GRE        |
8808                                   NETIF_F_TSO;
8809
8810         netdev->features = NETIF_F_SG                  |
8811                            NETIF_F_IP_CSUM             |
8812                            NETIF_F_SCTP_CSUM           |
8813                            NETIF_F_HIGHDMA             |
8814                            NETIF_F_GSO_UDP_TUNNEL      |
8815                            NETIF_F_GSO_GRE             |
8816                            NETIF_F_HW_VLAN_CTAG_TX     |
8817                            NETIF_F_HW_VLAN_CTAG_RX     |
8818                            NETIF_F_HW_VLAN_CTAG_FILTER |
8819                            NETIF_F_IPV6_CSUM           |
8820                            NETIF_F_TSO                 |
8821                            NETIF_F_TSO_ECN             |
8822                            NETIF_F_TSO6                |
8823                            NETIF_F_RXCSUM              |
8824                            NETIF_F_RXHASH              |
8825                            0;
8826
8827         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8828                 netdev->features |= NETIF_F_NTUPLE;
8829
8830         /* copy netdev features into list of user selectable features */
8831         netdev->hw_features |= netdev->features;
8832
8833         if (vsi->type == I40E_VSI_MAIN) {
8834                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8835                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8836                 /* The following steps are necessary to prevent reception
8837                  * of tagged packets - some older NVM configurations load a
8838                  * default a MAC-VLAN filter that accepts any tagged packet
8839                  * which must be replaced by a normal filter.
8840                  */
8841                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8842                         spin_lock_bh(&vsi->mac_filter_list_lock);
8843                         i40e_add_filter(vsi, mac_addr,
8844                                         I40E_VLAN_ANY, false, true);
8845                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8846                 }
8847         } else {
8848                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8849                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8850                          pf->vsi[pf->lan_vsi]->netdev->name);
8851                 random_ether_addr(mac_addr);
8852
8853                 spin_lock_bh(&vsi->mac_filter_list_lock);
8854                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8855                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8856         }
8857
8858         spin_lock_bh(&vsi->mac_filter_list_lock);
8859         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8860         spin_unlock_bh(&vsi->mac_filter_list_lock);
8861
8862         ether_addr_copy(netdev->dev_addr, mac_addr);
8863         ether_addr_copy(netdev->perm_addr, mac_addr);
8864         /* vlan gets same features (except vlan offload)
8865          * after any tweaks for specific VSI types
8866          */
8867         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8868                                                      NETIF_F_HW_VLAN_CTAG_RX |
8869                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8870         netdev->priv_flags |= IFF_UNICAST_FLT;
8871         netdev->priv_flags |= IFF_SUPP_NOFCS;
8872         /* Setup netdev TC information */
8873         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8874
8875         netdev->netdev_ops = &i40e_netdev_ops;
8876         netdev->watchdog_timeo = 5 * HZ;
8877         i40e_set_ethtool_ops(netdev);
8878 #ifdef I40E_FCOE
8879         i40e_fcoe_config_netdev(netdev, vsi);
8880 #endif
8881
8882         return 0;
8883 }
8884
8885 /**
8886  * i40e_vsi_delete - Delete a VSI from the switch
8887  * @vsi: the VSI being removed
8888  *
8889  * Returns 0 on success, negative value on failure
8890  **/
8891 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8892 {
8893         /* remove default VSI is not allowed */
8894         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8895                 return;
8896
8897         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8898 }
8899
8900 /**
8901  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8902  * @vsi: the VSI being queried
8903  *
8904  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8905  **/
8906 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8907 {
8908         struct i40e_veb *veb;
8909         struct i40e_pf *pf = vsi->back;
8910
8911         /* Uplink is not a bridge so default to VEB */
8912         if (vsi->veb_idx == I40E_NO_VEB)
8913                 return 1;
8914
8915         veb = pf->veb[vsi->veb_idx];
8916         if (!veb) {
8917                 dev_info(&pf->pdev->dev,
8918                          "There is no veb associated with the bridge\n");
8919                 return -ENOENT;
8920         }
8921
8922         /* Uplink is a bridge in VEPA mode */
8923         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8924                 return 0;
8925         } else {
8926                 /* Uplink is a bridge in VEB mode */
8927                 return 1;
8928         }
8929
8930         /* VEPA is now default bridge, so return 0 */
8931         return 0;
8932 }
8933
8934 /**
8935  * i40e_add_vsi - Add a VSI to the switch
8936  * @vsi: the VSI being configured
8937  *
8938  * This initializes a VSI context depending on the VSI type to be added and
8939  * passes it down to the add_vsi aq command.
8940  **/
8941 static int i40e_add_vsi(struct i40e_vsi *vsi)
8942 {
8943         int ret = -ENODEV;
8944         u8 laa_macaddr[ETH_ALEN];
8945         bool found_laa_mac_filter = false;
8946         struct i40e_pf *pf = vsi->back;
8947         struct i40e_hw *hw = &pf->hw;
8948         struct i40e_vsi_context ctxt;
8949         struct i40e_mac_filter *f, *ftmp;
8950
8951         u8 enabled_tc = 0x1; /* TC0 enabled */
8952         int f_count = 0;
8953
8954         memset(&ctxt, 0, sizeof(ctxt));
8955         switch (vsi->type) {
8956         case I40E_VSI_MAIN:
8957                 /* The PF's main VSI is already setup as part of the
8958                  * device initialization, so we'll not bother with
8959                  * the add_vsi call, but we will retrieve the current
8960                  * VSI context.
8961                  */
8962                 ctxt.seid = pf->main_vsi_seid;
8963                 ctxt.pf_num = pf->hw.pf_id;
8964                 ctxt.vf_num = 0;
8965                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8966                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8967                 if (ret) {
8968                         dev_info(&pf->pdev->dev,
8969                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8970                                  i40e_stat_str(&pf->hw, ret),
8971                                  i40e_aq_str(&pf->hw,
8972                                              pf->hw.aq.asq_last_status));
8973                         return -ENOENT;
8974                 }
8975                 vsi->info = ctxt.info;
8976                 vsi->info.valid_sections = 0;
8977
8978                 vsi->seid = ctxt.seid;
8979                 vsi->id = ctxt.vsi_number;
8980
8981                 enabled_tc = i40e_pf_get_tc_map(pf);
8982
8983                 /* MFP mode setup queue map and update VSI */
8984                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8985                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8986                         memset(&ctxt, 0, sizeof(ctxt));
8987                         ctxt.seid = pf->main_vsi_seid;
8988                         ctxt.pf_num = pf->hw.pf_id;
8989                         ctxt.vf_num = 0;
8990                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8991                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8992                         if (ret) {
8993                                 dev_info(&pf->pdev->dev,
8994                                          "update vsi failed, err %s aq_err %s\n",
8995                                          i40e_stat_str(&pf->hw, ret),
8996                                          i40e_aq_str(&pf->hw,
8997                                                     pf->hw.aq.asq_last_status));
8998                                 ret = -ENOENT;
8999                                 goto err;
9000                         }
9001                         /* update the local VSI info queue map */
9002                         i40e_vsi_update_queue_map(vsi, &ctxt);
9003                         vsi->info.valid_sections = 0;
9004                 } else {
9005                         /* Default/Main VSI is only enabled for TC0
9006                          * reconfigure it to enable all TCs that are
9007                          * available on the port in SFP mode.
9008                          * For MFP case the iSCSI PF would use this
9009                          * flow to enable LAN+iSCSI TC.
9010                          */
9011                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9012                         if (ret) {
9013                                 dev_info(&pf->pdev->dev,
9014                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9015                                          enabled_tc,
9016                                          i40e_stat_str(&pf->hw, ret),
9017                                          i40e_aq_str(&pf->hw,
9018                                                     pf->hw.aq.asq_last_status));
9019                                 ret = -ENOENT;
9020                         }
9021                 }
9022                 break;
9023
9024         case I40E_VSI_FDIR:
9025                 ctxt.pf_num = hw->pf_id;
9026                 ctxt.vf_num = 0;
9027                 ctxt.uplink_seid = vsi->uplink_seid;
9028                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9029                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9030                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9031                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9032                         ctxt.info.valid_sections |=
9033                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9034                         ctxt.info.switch_id =
9035                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9036                 }
9037                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9038                 break;
9039
9040         case I40E_VSI_VMDQ2:
9041                 ctxt.pf_num = hw->pf_id;
9042                 ctxt.vf_num = 0;
9043                 ctxt.uplink_seid = vsi->uplink_seid;
9044                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9045                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9046
9047                 /* This VSI is connected to VEB so the switch_id
9048                  * should be set to zero by default.
9049                  */
9050                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9051                         ctxt.info.valid_sections |=
9052                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9053                         ctxt.info.switch_id =
9054                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9055                 }
9056
9057                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9058                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9059                 break;
9060
9061         case I40E_VSI_SRIOV:
9062                 ctxt.pf_num = hw->pf_id;
9063                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9064                 ctxt.uplink_seid = vsi->uplink_seid;
9065                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9066                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9067
9068                 /* This VSI is connected to VEB so the switch_id
9069                  * should be set to zero by default.
9070                  */
9071                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9072                         ctxt.info.valid_sections |=
9073                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9074                         ctxt.info.switch_id =
9075                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9076                 }
9077
9078                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9079                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9080                 if (pf->vf[vsi->vf_id].spoofchk) {
9081                         ctxt.info.valid_sections |=
9082                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9083                         ctxt.info.sec_flags |=
9084                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9085                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9086                 }
9087                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9088                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9089                 break;
9090
9091 #ifdef I40E_FCOE
9092         case I40E_VSI_FCOE:
9093                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9094                 if (ret) {
9095                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9096                         return ret;
9097                 }
9098                 break;
9099
9100 #endif /* I40E_FCOE */
9101         default:
9102                 return -ENODEV;
9103         }
9104
9105         if (vsi->type != I40E_VSI_MAIN) {
9106                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9107                 if (ret) {
9108                         dev_info(&vsi->back->pdev->dev,
9109                                  "add vsi failed, err %s aq_err %s\n",
9110                                  i40e_stat_str(&pf->hw, ret),
9111                                  i40e_aq_str(&pf->hw,
9112                                              pf->hw.aq.asq_last_status));
9113                         ret = -ENOENT;
9114                         goto err;
9115                 }
9116                 vsi->info = ctxt.info;
9117                 vsi->info.valid_sections = 0;
9118                 vsi->seid = ctxt.seid;
9119                 vsi->id = ctxt.vsi_number;
9120         }
9121
9122         spin_lock_bh(&vsi->mac_filter_list_lock);
9123         /* If macvlan filters already exist, force them to get loaded */
9124         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9125                 f->changed = true;
9126                 f_count++;
9127
9128                 /* Expected to have only one MAC filter entry for LAA in list */
9129                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9130                         ether_addr_copy(laa_macaddr, f->macaddr);
9131                         found_laa_mac_filter = true;
9132                 }
9133         }
9134         spin_unlock_bh(&vsi->mac_filter_list_lock);
9135
9136         if (found_laa_mac_filter) {
9137                 struct i40e_aqc_remove_macvlan_element_data element;
9138
9139                 memset(&element, 0, sizeof(element));
9140                 ether_addr_copy(element.mac_addr, laa_macaddr);
9141                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9142                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9143                                              &element, 1, NULL);
9144                 if (ret) {
9145                         /* some older FW has a different default */
9146                         element.flags |=
9147                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9148                         i40e_aq_remove_macvlan(hw, vsi->seid,
9149                                                &element, 1, NULL);
9150                 }
9151
9152                 i40e_aq_mac_address_write(hw,
9153                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9154                                           laa_macaddr, NULL);
9155         }
9156
9157         if (f_count) {
9158                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9159                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9160         }
9161
9162         /* Update VSI BW information */
9163         ret = i40e_vsi_get_bw_info(vsi);
9164         if (ret) {
9165                 dev_info(&pf->pdev->dev,
9166                          "couldn't get vsi bw info, err %s aq_err %s\n",
9167                          i40e_stat_str(&pf->hw, ret),
9168                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9169                 /* VSI is already added so not tearing that up */
9170                 ret = 0;
9171         }
9172
9173 err:
9174         return ret;
9175 }
9176
9177 /**
9178  * i40e_vsi_release - Delete a VSI and free its resources
9179  * @vsi: the VSI being removed
9180  *
9181  * Returns 0 on success or < 0 on error
9182  **/
9183 int i40e_vsi_release(struct i40e_vsi *vsi)
9184 {
9185         struct i40e_mac_filter *f, *ftmp;
9186         struct i40e_veb *veb = NULL;
9187         struct i40e_pf *pf;
9188         u16 uplink_seid;
9189         int i, n;
9190
9191         pf = vsi->back;
9192
9193         /* release of a VEB-owner or last VSI is not allowed */
9194         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9195                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9196                          vsi->seid, vsi->uplink_seid);
9197                 return -ENODEV;
9198         }
9199         if (vsi == pf->vsi[pf->lan_vsi] &&
9200             !test_bit(__I40E_DOWN, &pf->state)) {
9201                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9202                 return -ENODEV;
9203         }
9204
9205         uplink_seid = vsi->uplink_seid;
9206         if (vsi->type != I40E_VSI_SRIOV) {
9207                 if (vsi->netdev_registered) {
9208                         vsi->netdev_registered = false;
9209                         if (vsi->netdev) {
9210                                 /* results in a call to i40e_close() */
9211                                 unregister_netdev(vsi->netdev);
9212                         }
9213                 } else {
9214                         i40e_vsi_close(vsi);
9215                 }
9216                 i40e_vsi_disable_irq(vsi);
9217         }
9218
9219         spin_lock_bh(&vsi->mac_filter_list_lock);
9220         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9221                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9222                                 f->is_vf, f->is_netdev);
9223         spin_unlock_bh(&vsi->mac_filter_list_lock);
9224
9225         i40e_sync_vsi_filters(vsi, false);
9226
9227         i40e_vsi_delete(vsi);
9228         i40e_vsi_free_q_vectors(vsi);
9229         if (vsi->netdev) {
9230                 free_netdev(vsi->netdev);
9231                 vsi->netdev = NULL;
9232         }
9233         i40e_vsi_clear_rings(vsi);
9234         i40e_vsi_clear(vsi);
9235
9236         /* If this was the last thing on the VEB, except for the
9237          * controlling VSI, remove the VEB, which puts the controlling
9238          * VSI onto the next level down in the switch.
9239          *
9240          * Well, okay, there's one more exception here: don't remove
9241          * the orphan VEBs yet.  We'll wait for an explicit remove request
9242          * from up the network stack.
9243          */
9244         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9245                 if (pf->vsi[i] &&
9246                     pf->vsi[i]->uplink_seid == uplink_seid &&
9247                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9248                         n++;      /* count the VSIs */
9249                 }
9250         }
9251         for (i = 0; i < I40E_MAX_VEB; i++) {
9252                 if (!pf->veb[i])
9253                         continue;
9254                 if (pf->veb[i]->uplink_seid == uplink_seid)
9255                         n++;     /* count the VEBs */
9256                 if (pf->veb[i]->seid == uplink_seid)
9257                         veb = pf->veb[i];
9258         }
9259         if (n == 0 && veb && veb->uplink_seid != 0)
9260                 i40e_veb_release(veb);
9261
9262         return 0;
9263 }
9264
9265 /**
9266  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9267  * @vsi: ptr to the VSI
9268  *
9269  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9270  * corresponding SW VSI structure and initializes num_queue_pairs for the
9271  * newly allocated VSI.
9272  *
9273  * Returns 0 on success or negative on failure
9274  **/
9275 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9276 {
9277         int ret = -ENOENT;
9278         struct i40e_pf *pf = vsi->back;
9279
9280         if (vsi->q_vectors[0]) {
9281                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9282                          vsi->seid);
9283                 return -EEXIST;
9284         }
9285
9286         if (vsi->base_vector) {
9287                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9288                          vsi->seid, vsi->base_vector);
9289                 return -EEXIST;
9290         }
9291
9292         ret = i40e_vsi_alloc_q_vectors(vsi);
9293         if (ret) {
9294                 dev_info(&pf->pdev->dev,
9295                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9296                          vsi->num_q_vectors, vsi->seid, ret);
9297                 vsi->num_q_vectors = 0;
9298                 goto vector_setup_out;
9299         }
9300
9301         /* In Legacy mode, we do not have to get any other vector since we
9302          * piggyback on the misc/ICR0 for queue interrupts.
9303         */
9304         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9305                 return ret;
9306         if (vsi->num_q_vectors)
9307                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9308                                                  vsi->num_q_vectors, vsi->idx);
9309         if (vsi->base_vector < 0) {
9310                 dev_info(&pf->pdev->dev,
9311                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9312                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9313                 i40e_vsi_free_q_vectors(vsi);
9314                 ret = -ENOENT;
9315                 goto vector_setup_out;
9316         }
9317
9318 vector_setup_out:
9319         return ret;
9320 }
9321
9322 /**
9323  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9324  * @vsi: pointer to the vsi.
9325  *
9326  * This re-allocates a vsi's queue resources.
9327  *
9328  * Returns pointer to the successfully allocated and configured VSI sw struct
9329  * on success, otherwise returns NULL on failure.
9330  **/
9331 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9332 {
9333         struct i40e_pf *pf = vsi->back;
9334         u8 enabled_tc;
9335         int ret;
9336
9337         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9338         i40e_vsi_clear_rings(vsi);
9339
9340         i40e_vsi_free_arrays(vsi, false);
9341         i40e_set_num_rings_in_vsi(vsi);
9342         ret = i40e_vsi_alloc_arrays(vsi, false);
9343         if (ret)
9344                 goto err_vsi;
9345
9346         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9347         if (ret < 0) {
9348                 dev_info(&pf->pdev->dev,
9349                          "failed to get tracking for %d queues for VSI %d err %d\n",
9350                          vsi->alloc_queue_pairs, vsi->seid, ret);
9351                 goto err_vsi;
9352         }
9353         vsi->base_queue = ret;
9354
9355         /* Update the FW view of the VSI. Force a reset of TC and queue
9356          * layout configurations.
9357          */
9358         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9359         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9360         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9361         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9362
9363         /* assign it some queues */
9364         ret = i40e_alloc_rings(vsi);
9365         if (ret)
9366                 goto err_rings;
9367
9368         /* map all of the rings to the q_vectors */
9369         i40e_vsi_map_rings_to_vectors(vsi);
9370         return vsi;
9371
9372 err_rings:
9373         i40e_vsi_free_q_vectors(vsi);
9374         if (vsi->netdev_registered) {
9375                 vsi->netdev_registered = false;
9376                 unregister_netdev(vsi->netdev);
9377                 free_netdev(vsi->netdev);
9378                 vsi->netdev = NULL;
9379         }
9380         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9381 err_vsi:
9382         i40e_vsi_clear(vsi);
9383         return NULL;
9384 }
9385
9386 /**
9387  * i40e_vsi_setup - Set up a VSI by a given type
9388  * @pf: board private structure
9389  * @type: VSI type
9390  * @uplink_seid: the switch element to link to
9391  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9392  *
9393  * This allocates the sw VSI structure and its queue resources, then add a VSI
9394  * to the identified VEB.
9395  *
9396  * Returns pointer to the successfully allocated and configure VSI sw struct on
9397  * success, otherwise returns NULL on failure.
9398  **/
9399 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9400                                 u16 uplink_seid, u32 param1)
9401 {
9402         struct i40e_vsi *vsi = NULL;
9403         struct i40e_veb *veb = NULL;
9404         int ret, i;
9405         int v_idx;
9406
9407         /* The requested uplink_seid must be either
9408          *     - the PF's port seid
9409          *              no VEB is needed because this is the PF
9410          *              or this is a Flow Director special case VSI
9411          *     - seid of an existing VEB
9412          *     - seid of a VSI that owns an existing VEB
9413          *     - seid of a VSI that doesn't own a VEB
9414          *              a new VEB is created and the VSI becomes the owner
9415          *     - seid of the PF VSI, which is what creates the first VEB
9416          *              this is a special case of the previous
9417          *
9418          * Find which uplink_seid we were given and create a new VEB if needed
9419          */
9420         for (i = 0; i < I40E_MAX_VEB; i++) {
9421                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9422                         veb = pf->veb[i];
9423                         break;
9424                 }
9425         }
9426
9427         if (!veb && uplink_seid != pf->mac_seid) {
9428
9429                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9430                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9431                                 vsi = pf->vsi[i];
9432                                 break;
9433                         }
9434                 }
9435                 if (!vsi) {
9436                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9437                                  uplink_seid);
9438                         return NULL;
9439                 }
9440
9441                 if (vsi->uplink_seid == pf->mac_seid)
9442                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9443                                              vsi->tc_config.enabled_tc);
9444                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9445                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9446                                              vsi->tc_config.enabled_tc);
9447                 if (veb) {
9448                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9449                                 dev_info(&vsi->back->pdev->dev,
9450                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9451                                 return NULL;
9452                         }
9453                         /* We come up by default in VEPA mode if SRIOV is not
9454                          * already enabled, in which case we can't force VEPA
9455                          * mode.
9456                          */
9457                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9458                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9459                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9460                         }
9461                         i40e_config_bridge_mode(veb);
9462                 }
9463                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9464                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9465                                 veb = pf->veb[i];
9466                 }
9467                 if (!veb) {
9468                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9469                         return NULL;
9470                 }
9471
9472                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9473                 uplink_seid = veb->seid;
9474         }
9475
9476         /* get vsi sw struct */
9477         v_idx = i40e_vsi_mem_alloc(pf, type);
9478         if (v_idx < 0)
9479                 goto err_alloc;
9480         vsi = pf->vsi[v_idx];
9481         if (!vsi)
9482                 goto err_alloc;
9483         vsi->type = type;
9484         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9485
9486         if (type == I40E_VSI_MAIN)
9487                 pf->lan_vsi = v_idx;
9488         else if (type == I40E_VSI_SRIOV)
9489                 vsi->vf_id = param1;
9490         /* assign it some queues */
9491         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9492                                 vsi->idx);
9493         if (ret < 0) {
9494                 dev_info(&pf->pdev->dev,
9495                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9496                          vsi->alloc_queue_pairs, vsi->seid, ret);
9497                 goto err_vsi;
9498         }
9499         vsi->base_queue = ret;
9500
9501         /* get a VSI from the hardware */
9502         vsi->uplink_seid = uplink_seid;
9503         ret = i40e_add_vsi(vsi);
9504         if (ret)
9505                 goto err_vsi;
9506
9507         switch (vsi->type) {
9508         /* setup the netdev if needed */
9509         case I40E_VSI_MAIN:
9510         case I40E_VSI_VMDQ2:
9511         case I40E_VSI_FCOE:
9512                 ret = i40e_config_netdev(vsi);
9513                 if (ret)
9514                         goto err_netdev;
9515                 ret = register_netdev(vsi->netdev);
9516                 if (ret)
9517                         goto err_netdev;
9518                 vsi->netdev_registered = true;
9519                 netif_carrier_off(vsi->netdev);
9520 #ifdef CONFIG_I40E_DCB
9521                 /* Setup DCB netlink interface */
9522                 i40e_dcbnl_setup(vsi);
9523 #endif /* CONFIG_I40E_DCB */
9524                 /* fall through */
9525
9526         case I40E_VSI_FDIR:
9527                 /* set up vectors and rings if needed */
9528                 ret = i40e_vsi_setup_vectors(vsi);
9529                 if (ret)
9530                         goto err_msix;
9531
9532                 ret = i40e_alloc_rings(vsi);
9533                 if (ret)
9534                         goto err_rings;
9535
9536                 /* map all of the rings to the q_vectors */
9537                 i40e_vsi_map_rings_to_vectors(vsi);
9538
9539                 i40e_vsi_reset_stats(vsi);
9540                 break;
9541
9542         default:
9543                 /* no netdev or rings for the other VSI types */
9544                 break;
9545         }
9546
9547         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9548             (vsi->type == I40E_VSI_VMDQ2)) {
9549                 ret = i40e_vsi_config_rss(vsi);
9550         }
9551         return vsi;
9552
9553 err_rings:
9554         i40e_vsi_free_q_vectors(vsi);
9555 err_msix:
9556         if (vsi->netdev_registered) {
9557                 vsi->netdev_registered = false;
9558                 unregister_netdev(vsi->netdev);
9559                 free_netdev(vsi->netdev);
9560                 vsi->netdev = NULL;
9561         }
9562 err_netdev:
9563         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9564 err_vsi:
9565         i40e_vsi_clear(vsi);
9566 err_alloc:
9567         return NULL;
9568 }
9569
9570 /**
9571  * i40e_veb_get_bw_info - Query VEB BW information
9572  * @veb: the veb to query
9573  *
9574  * Query the Tx scheduler BW configuration data for given VEB
9575  **/
9576 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9577 {
9578         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9579         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9580         struct i40e_pf *pf = veb->pf;
9581         struct i40e_hw *hw = &pf->hw;
9582         u32 tc_bw_max;
9583         int ret = 0;
9584         int i;
9585
9586         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9587                                                   &bw_data, NULL);
9588         if (ret) {
9589                 dev_info(&pf->pdev->dev,
9590                          "query veb bw config failed, err %s aq_err %s\n",
9591                          i40e_stat_str(&pf->hw, ret),
9592                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9593                 goto out;
9594         }
9595
9596         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9597                                                    &ets_data, NULL);
9598         if (ret) {
9599                 dev_info(&pf->pdev->dev,
9600                          "query veb bw ets config failed, err %s aq_err %s\n",
9601                          i40e_stat_str(&pf->hw, ret),
9602                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9603                 goto out;
9604         }
9605
9606         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9607         veb->bw_max_quanta = ets_data.tc_bw_max;
9608         veb->is_abs_credits = bw_data.absolute_credits_enable;
9609         veb->enabled_tc = ets_data.tc_valid_bits;
9610         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9611                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9612         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9613                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9614                 veb->bw_tc_limit_credits[i] =
9615                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9616                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9617         }
9618
9619 out:
9620         return ret;
9621 }
9622
9623 /**
9624  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9625  * @pf: board private structure
9626  *
9627  * On error: returns error code (negative)
9628  * On success: returns vsi index in PF (positive)
9629  **/
9630 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9631 {
9632         int ret = -ENOENT;
9633         struct i40e_veb *veb;
9634         int i;
9635
9636         /* Need to protect the allocation of switch elements at the PF level */
9637         mutex_lock(&pf->switch_mutex);
9638
9639         /* VEB list may be fragmented if VEB creation/destruction has
9640          * been happening.  We can afford to do a quick scan to look
9641          * for any free slots in the list.
9642          *
9643          * find next empty veb slot, looping back around if necessary
9644          */
9645         i = 0;
9646         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9647                 i++;
9648         if (i >= I40E_MAX_VEB) {
9649                 ret = -ENOMEM;
9650                 goto err_alloc_veb;  /* out of VEB slots! */
9651         }
9652
9653         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9654         if (!veb) {
9655                 ret = -ENOMEM;
9656                 goto err_alloc_veb;
9657         }
9658         veb->pf = pf;
9659         veb->idx = i;
9660         veb->enabled_tc = 1;
9661
9662         pf->veb[i] = veb;
9663         ret = i;
9664 err_alloc_veb:
9665         mutex_unlock(&pf->switch_mutex);
9666         return ret;
9667 }
9668
9669 /**
9670  * i40e_switch_branch_release - Delete a branch of the switch tree
9671  * @branch: where to start deleting
9672  *
9673  * This uses recursion to find the tips of the branch to be
9674  * removed, deleting until we get back to and can delete this VEB.
9675  **/
9676 static void i40e_switch_branch_release(struct i40e_veb *branch)
9677 {
9678         struct i40e_pf *pf = branch->pf;
9679         u16 branch_seid = branch->seid;
9680         u16 veb_idx = branch->idx;
9681         int i;
9682
9683         /* release any VEBs on this VEB - RECURSION */
9684         for (i = 0; i < I40E_MAX_VEB; i++) {
9685                 if (!pf->veb[i])
9686                         continue;
9687                 if (pf->veb[i]->uplink_seid == branch->seid)
9688                         i40e_switch_branch_release(pf->veb[i]);
9689         }
9690
9691         /* Release the VSIs on this VEB, but not the owner VSI.
9692          *
9693          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9694          *       the VEB itself, so don't use (*branch) after this loop.
9695          */
9696         for (i = 0; i < pf->num_alloc_vsi; i++) {
9697                 if (!pf->vsi[i])
9698                         continue;
9699                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9700                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9701                         i40e_vsi_release(pf->vsi[i]);
9702                 }
9703         }
9704
9705         /* There's one corner case where the VEB might not have been
9706          * removed, so double check it here and remove it if needed.
9707          * This case happens if the veb was created from the debugfs
9708          * commands and no VSIs were added to it.
9709          */
9710         if (pf->veb[veb_idx])
9711                 i40e_veb_release(pf->veb[veb_idx]);
9712 }
9713
9714 /**
9715  * i40e_veb_clear - remove veb struct
9716  * @veb: the veb to remove
9717  **/
9718 static void i40e_veb_clear(struct i40e_veb *veb)
9719 {
9720         if (!veb)
9721                 return;
9722
9723         if (veb->pf) {
9724                 struct i40e_pf *pf = veb->pf;
9725
9726                 mutex_lock(&pf->switch_mutex);
9727                 if (pf->veb[veb->idx] == veb)
9728                         pf->veb[veb->idx] = NULL;
9729                 mutex_unlock(&pf->switch_mutex);
9730         }
9731
9732         kfree(veb);
9733 }
9734
9735 /**
9736  * i40e_veb_release - Delete a VEB and free its resources
9737  * @veb: the VEB being removed
9738  **/
9739 void i40e_veb_release(struct i40e_veb *veb)
9740 {
9741         struct i40e_vsi *vsi = NULL;
9742         struct i40e_pf *pf;
9743         int i, n = 0;
9744
9745         pf = veb->pf;
9746
9747         /* find the remaining VSI and check for extras */
9748         for (i = 0; i < pf->num_alloc_vsi; i++) {
9749                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9750                         n++;
9751                         vsi = pf->vsi[i];
9752                 }
9753         }
9754         if (n != 1) {
9755                 dev_info(&pf->pdev->dev,
9756                          "can't remove VEB %d with %d VSIs left\n",
9757                          veb->seid, n);
9758                 return;
9759         }
9760
9761         /* move the remaining VSI to uplink veb */
9762         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9763         if (veb->uplink_seid) {
9764                 vsi->uplink_seid = veb->uplink_seid;
9765                 if (veb->uplink_seid == pf->mac_seid)
9766                         vsi->veb_idx = I40E_NO_VEB;
9767                 else
9768                         vsi->veb_idx = veb->veb_idx;
9769         } else {
9770                 /* floating VEB */
9771                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9772                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9773         }
9774
9775         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9776         i40e_veb_clear(veb);
9777 }
9778
9779 /**
9780  * i40e_add_veb - create the VEB in the switch
9781  * @veb: the VEB to be instantiated
9782  * @vsi: the controlling VSI
9783  **/
9784 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9785 {
9786         struct i40e_pf *pf = veb->pf;
9787         bool is_default = veb->pf->cur_promisc;
9788         bool is_cloud = false;
9789         int ret;
9790
9791         /* get a VEB from the hardware */
9792         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9793                               veb->enabled_tc, is_default,
9794                               is_cloud, &veb->seid, NULL);
9795         if (ret) {
9796                 dev_info(&pf->pdev->dev,
9797                          "couldn't add VEB, err %s aq_err %s\n",
9798                          i40e_stat_str(&pf->hw, ret),
9799                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9800                 return -EPERM;
9801         }
9802
9803         /* get statistics counter */
9804         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9805                                          &veb->stats_idx, NULL, NULL, NULL);
9806         if (ret) {
9807                 dev_info(&pf->pdev->dev,
9808                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9809                          i40e_stat_str(&pf->hw, ret),
9810                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9811                 return -EPERM;
9812         }
9813         ret = i40e_veb_get_bw_info(veb);
9814         if (ret) {
9815                 dev_info(&pf->pdev->dev,
9816                          "couldn't get VEB bw info, err %s aq_err %s\n",
9817                          i40e_stat_str(&pf->hw, ret),
9818                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9819                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9820                 return -ENOENT;
9821         }
9822
9823         vsi->uplink_seid = veb->seid;
9824         vsi->veb_idx = veb->idx;
9825         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9826
9827         return 0;
9828 }
9829
9830 /**
9831  * i40e_veb_setup - Set up a VEB
9832  * @pf: board private structure
9833  * @flags: VEB setup flags
9834  * @uplink_seid: the switch element to link to
9835  * @vsi_seid: the initial VSI seid
9836  * @enabled_tc: Enabled TC bit-map
9837  *
9838  * This allocates the sw VEB structure and links it into the switch
9839  * It is possible and legal for this to be a duplicate of an already
9840  * existing VEB.  It is also possible for both uplink and vsi seids
9841  * to be zero, in order to create a floating VEB.
9842  *
9843  * Returns pointer to the successfully allocated VEB sw struct on
9844  * success, otherwise returns NULL on failure.
9845  **/
9846 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9847                                 u16 uplink_seid, u16 vsi_seid,
9848                                 u8 enabled_tc)
9849 {
9850         struct i40e_veb *veb, *uplink_veb = NULL;
9851         int vsi_idx, veb_idx;
9852         int ret;
9853
9854         /* if one seid is 0, the other must be 0 to create a floating relay */
9855         if ((uplink_seid == 0 || vsi_seid == 0) &&
9856             (uplink_seid + vsi_seid != 0)) {
9857                 dev_info(&pf->pdev->dev,
9858                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9859                          uplink_seid, vsi_seid);
9860                 return NULL;
9861         }
9862
9863         /* make sure there is such a vsi and uplink */
9864         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9865                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9866                         break;
9867         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9868                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9869                          vsi_seid);
9870                 return NULL;
9871         }
9872
9873         if (uplink_seid && uplink_seid != pf->mac_seid) {
9874                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9875                         if (pf->veb[veb_idx] &&
9876                             pf->veb[veb_idx]->seid == uplink_seid) {
9877                                 uplink_veb = pf->veb[veb_idx];
9878                                 break;
9879                         }
9880                 }
9881                 if (!uplink_veb) {
9882                         dev_info(&pf->pdev->dev,
9883                                  "uplink seid %d not found\n", uplink_seid);
9884                         return NULL;
9885                 }
9886         }
9887
9888         /* get veb sw struct */
9889         veb_idx = i40e_veb_mem_alloc(pf);
9890         if (veb_idx < 0)
9891                 goto err_alloc;
9892         veb = pf->veb[veb_idx];
9893         veb->flags = flags;
9894         veb->uplink_seid = uplink_seid;
9895         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9896         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9897
9898         /* create the VEB in the switch */
9899         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9900         if (ret)
9901                 goto err_veb;
9902         if (vsi_idx == pf->lan_vsi)
9903                 pf->lan_veb = veb->idx;
9904
9905         return veb;
9906
9907 err_veb:
9908         i40e_veb_clear(veb);
9909 err_alloc:
9910         return NULL;
9911 }
9912
9913 /**
9914  * i40e_setup_pf_switch_element - set PF vars based on switch type
9915  * @pf: board private structure
9916  * @ele: element we are building info from
9917  * @num_reported: total number of elements
9918  * @printconfig: should we print the contents
9919  *
9920  * helper function to assist in extracting a few useful SEID values.
9921  **/
9922 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9923                                 struct i40e_aqc_switch_config_element_resp *ele,
9924                                 u16 num_reported, bool printconfig)
9925 {
9926         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9927         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9928         u8 element_type = ele->element_type;
9929         u16 seid = le16_to_cpu(ele->seid);
9930
9931         if (printconfig)
9932                 dev_info(&pf->pdev->dev,
9933                          "type=%d seid=%d uplink=%d downlink=%d\n",
9934                          element_type, seid, uplink_seid, downlink_seid);
9935
9936         switch (element_type) {
9937         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9938                 pf->mac_seid = seid;
9939                 break;
9940         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9941                 /* Main VEB? */
9942                 if (uplink_seid != pf->mac_seid)
9943                         break;
9944                 if (pf->lan_veb == I40E_NO_VEB) {
9945                         int v;
9946
9947                         /* find existing or else empty VEB */
9948                         for (v = 0; v < I40E_MAX_VEB; v++) {
9949                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9950                                         pf->lan_veb = v;
9951                                         break;
9952                                 }
9953                         }
9954                         if (pf->lan_veb == I40E_NO_VEB) {
9955                                 v = i40e_veb_mem_alloc(pf);
9956                                 if (v < 0)
9957                                         break;
9958                                 pf->lan_veb = v;
9959                         }
9960                 }
9961
9962                 pf->veb[pf->lan_veb]->seid = seid;
9963                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9964                 pf->veb[pf->lan_veb]->pf = pf;
9965                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9966                 break;
9967         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9968                 if (num_reported != 1)
9969                         break;
9970                 /* This is immediately after a reset so we can assume this is
9971                  * the PF's VSI
9972                  */
9973                 pf->mac_seid = uplink_seid;
9974                 pf->pf_seid = downlink_seid;
9975                 pf->main_vsi_seid = seid;
9976                 if (printconfig)
9977                         dev_info(&pf->pdev->dev,
9978                                  "pf_seid=%d main_vsi_seid=%d\n",
9979                                  pf->pf_seid, pf->main_vsi_seid);
9980                 break;
9981         case I40E_SWITCH_ELEMENT_TYPE_PF:
9982         case I40E_SWITCH_ELEMENT_TYPE_VF:
9983         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9984         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9985         case I40E_SWITCH_ELEMENT_TYPE_PE:
9986         case I40E_SWITCH_ELEMENT_TYPE_PA:
9987                 /* ignore these for now */
9988                 break;
9989         default:
9990                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9991                          element_type, seid);
9992                 break;
9993         }
9994 }
9995
9996 /**
9997  * i40e_fetch_switch_configuration - Get switch config from firmware
9998  * @pf: board private structure
9999  * @printconfig: should we print the contents
10000  *
10001  * Get the current switch configuration from the device and
10002  * extract a few useful SEID values.
10003  **/
10004 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10005 {
10006         struct i40e_aqc_get_switch_config_resp *sw_config;
10007         u16 next_seid = 0;
10008         int ret = 0;
10009         u8 *aq_buf;
10010         int i;
10011
10012         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10013         if (!aq_buf)
10014                 return -ENOMEM;
10015
10016         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10017         do {
10018                 u16 num_reported, num_total;
10019
10020                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10021                                                 I40E_AQ_LARGE_BUF,
10022                                                 &next_seid, NULL);
10023                 if (ret) {
10024                         dev_info(&pf->pdev->dev,
10025                                  "get switch config failed err %s aq_err %s\n",
10026                                  i40e_stat_str(&pf->hw, ret),
10027                                  i40e_aq_str(&pf->hw,
10028                                              pf->hw.aq.asq_last_status));
10029                         kfree(aq_buf);
10030                         return -ENOENT;
10031                 }
10032
10033                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10034                 num_total = le16_to_cpu(sw_config->header.num_total);
10035
10036                 if (printconfig)
10037                         dev_info(&pf->pdev->dev,
10038                                  "header: %d reported %d total\n",
10039                                  num_reported, num_total);
10040
10041                 for (i = 0; i < num_reported; i++) {
10042                         struct i40e_aqc_switch_config_element_resp *ele =
10043                                 &sw_config->element[i];
10044
10045                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10046                                                      printconfig);
10047                 }
10048         } while (next_seid != 0);
10049
10050         kfree(aq_buf);
10051         return ret;
10052 }
10053
10054 /**
10055  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10056  * @pf: board private structure
10057  * @reinit: if the Main VSI needs to re-initialized.
10058  *
10059  * Returns 0 on success, negative value on failure
10060  **/
10061 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10062 {
10063         int ret;
10064
10065         /* find out what's out there already */
10066         ret = i40e_fetch_switch_configuration(pf, false);
10067         if (ret) {
10068                 dev_info(&pf->pdev->dev,
10069                          "couldn't fetch switch config, err %s aq_err %s\n",
10070                          i40e_stat_str(&pf->hw, ret),
10071                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10072                 return ret;
10073         }
10074         i40e_pf_reset_stats(pf);
10075
10076         /* first time setup */
10077         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10078                 struct i40e_vsi *vsi = NULL;
10079                 u16 uplink_seid;
10080
10081                 /* Set up the PF VSI associated with the PF's main VSI
10082                  * that is already in the HW switch
10083                  */
10084                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10085                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10086                 else
10087                         uplink_seid = pf->mac_seid;
10088                 if (pf->lan_vsi == I40E_NO_VSI)
10089                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10090                 else if (reinit)
10091                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10092                 if (!vsi) {
10093                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10094                         i40e_fdir_teardown(pf);
10095                         return -EAGAIN;
10096                 }
10097         } else {
10098                 /* force a reset of TC and queue layout configurations */
10099                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10100
10101                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10102                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10103                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10104         }
10105         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10106
10107         i40e_fdir_sb_setup(pf);
10108
10109         /* Setup static PF queue filter control settings */
10110         ret = i40e_setup_pf_filter_control(pf);
10111         if (ret) {
10112                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10113                          ret);
10114                 /* Failure here should not stop continuing other steps */
10115         }
10116
10117         /* enable RSS in the HW, even for only one queue, as the stack can use
10118          * the hash
10119          */
10120         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10121                 i40e_pf_config_rss(pf);
10122
10123         /* fill in link information and enable LSE reporting */
10124         i40e_update_link_info(&pf->hw);
10125         i40e_link_event(pf);
10126
10127         /* Initialize user-specific link properties */
10128         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10129                                   I40E_AQ_AN_COMPLETED) ? true : false);
10130
10131         i40e_ptp_init(pf);
10132
10133         return ret;
10134 }
10135
10136 /**
10137  * i40e_determine_queue_usage - Work out queue distribution
10138  * @pf: board private structure
10139  **/
10140 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10141 {
10142         int queues_left;
10143
10144         pf->num_lan_qps = 0;
10145 #ifdef I40E_FCOE
10146         pf->num_fcoe_qps = 0;
10147 #endif
10148
10149         /* Find the max queues to be put into basic use.  We'll always be
10150          * using TC0, whether or not DCB is running, and TC0 will get the
10151          * big RSS set.
10152          */
10153         queues_left = pf->hw.func_caps.num_tx_qp;
10154
10155         if ((queues_left == 1) ||
10156             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10157                 /* one qp for PF, no queues for anything else */
10158                 queues_left = 0;
10159                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10160
10161                 /* make sure all the fancies are disabled */
10162                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10163 #ifdef I40E_FCOE
10164                                I40E_FLAG_FCOE_ENABLED   |
10165 #endif
10166                                I40E_FLAG_FD_SB_ENABLED  |
10167                                I40E_FLAG_FD_ATR_ENABLED |
10168                                I40E_FLAG_DCB_CAPABLE    |
10169                                I40E_FLAG_SRIOV_ENABLED  |
10170                                I40E_FLAG_VMDQ_ENABLED);
10171         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10172                                   I40E_FLAG_FD_SB_ENABLED |
10173                                   I40E_FLAG_FD_ATR_ENABLED |
10174                                   I40E_FLAG_DCB_CAPABLE))) {
10175                 /* one qp for PF */
10176                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10177                 queues_left -= pf->num_lan_qps;
10178
10179                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10180 #ifdef I40E_FCOE
10181                                I40E_FLAG_FCOE_ENABLED   |
10182 #endif
10183                                I40E_FLAG_FD_SB_ENABLED  |
10184                                I40E_FLAG_FD_ATR_ENABLED |
10185                                I40E_FLAG_DCB_ENABLED    |
10186                                I40E_FLAG_VMDQ_ENABLED);
10187         } else {
10188                 /* Not enough queues for all TCs */
10189                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10190                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10191                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10192                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10193                 }
10194                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10195                                         num_online_cpus());
10196                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10197                                         pf->hw.func_caps.num_tx_qp);
10198
10199                 queues_left -= pf->num_lan_qps;
10200         }
10201
10202 #ifdef I40E_FCOE
10203         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10204                 if (I40E_DEFAULT_FCOE <= queues_left) {
10205                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10206                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10207                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10208                 } else {
10209                         pf->num_fcoe_qps = 0;
10210                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10211                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10212                 }
10213
10214                 queues_left -= pf->num_fcoe_qps;
10215         }
10216
10217 #endif
10218         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10219                 if (queues_left > 1) {
10220                         queues_left -= 1; /* save 1 queue for FD */
10221                 } else {
10222                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10223                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10224                 }
10225         }
10226
10227         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10228             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10229                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10230                                         (queues_left / pf->num_vf_qps));
10231                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10232         }
10233
10234         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10235             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10236                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10237                                           (queues_left / pf->num_vmdq_qps));
10238                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10239         }
10240
10241         pf->queues_left = queues_left;
10242         dev_dbg(&pf->pdev->dev,
10243                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10244                 pf->hw.func_caps.num_tx_qp,
10245                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10246                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10247                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10248                 queues_left);
10249 #ifdef I40E_FCOE
10250         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10251 #endif
10252 }
10253
10254 /**
10255  * i40e_setup_pf_filter_control - Setup PF static filter control
10256  * @pf: PF to be setup
10257  *
10258  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10259  * settings. If PE/FCoE are enabled then it will also set the per PF
10260  * based filter sizes required for them. It also enables Flow director,
10261  * ethertype and macvlan type filter settings for the pf.
10262  *
10263  * Returns 0 on success, negative on failure
10264  **/
10265 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10266 {
10267         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10268
10269         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10270
10271         /* Flow Director is enabled */
10272         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10273                 settings->enable_fdir = true;
10274
10275         /* Ethtype and MACVLAN filters enabled for PF */
10276         settings->enable_ethtype = true;
10277         settings->enable_macvlan = true;
10278
10279         if (i40e_set_filter_control(&pf->hw, settings))
10280                 return -ENOENT;
10281
10282         return 0;
10283 }
10284
10285 #define INFO_STRING_LEN 255
10286 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10287 static void i40e_print_features(struct i40e_pf *pf)
10288 {
10289         struct i40e_hw *hw = &pf->hw;
10290         char *buf, *string;
10291         int i = 0;
10292
10293         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
10294         if (!string) {
10295                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
10296                 return;
10297         }
10298
10299         buf = string;
10300
10301         i += snprintf(&buf[i], REMAIN(i), "Features: PF-id[%d] ", hw->pf_id);
10302 #ifdef CONFIG_PCI_IOV
10303         i += snprintf(&buf[i], REMAIN(i), "VFs: %d ", pf->num_req_vfs);
10304 #endif
10305         i += snprintf(&buf[i], REMAIN(i), "VSIs: %d QP: %d RX: %s ",
10306                       pf->hw.func_caps.num_vsis,
10307                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10308                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10309
10310         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10311                 i += snprintf(&buf[i], REMAIN(i), "RSS ");
10312         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10313                 i += snprintf(&buf[i], REMAIN(i), "FD_ATR ");
10314         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10315                 i += snprintf(&buf[i], REMAIN(i), "FD_SB ");
10316                 i += snprintf(&buf[i], REMAIN(i), "NTUPLE ");
10317         }
10318         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10319                 i += snprintf(&buf[i], REMAIN(i), "DCB ");
10320 #if IS_ENABLED(CONFIG_VXLAN)
10321         i += snprintf(&buf[i], REMAIN(i), "VxLAN ");
10322 #endif
10323         if (pf->flags & I40E_FLAG_PTP)
10324                 i += snprintf(&buf[i], REMAIN(i), "PTP ");
10325 #ifdef I40E_FCOE
10326         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10327                 i += snprintf(&buf[i], REMAIN(i), "FCOE ");
10328 #endif
10329         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10330                 i += snprintf(&buf[i], REMAIN(i), "VEPA ");
10331         else
10332                 buf += sprintf(buf, "VEPA ");
10333
10334         dev_info(&pf->pdev->dev, "%s\n", string);
10335         kfree(string);
10336         WARN_ON(i > INFO_STRING_LEN);
10337 }
10338
10339 /**
10340  * i40e_probe - Device initialization routine
10341  * @pdev: PCI device information struct
10342  * @ent: entry in i40e_pci_tbl
10343  *
10344  * i40e_probe initializes a PF identified by a pci_dev structure.
10345  * The OS initialization, configuring of the PF private structure,
10346  * and a hardware reset occur.
10347  *
10348  * Returns 0 on success, negative on failure
10349  **/
10350 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10351 {
10352         struct i40e_aq_get_phy_abilities_resp abilities;
10353         struct i40e_pf *pf;
10354         struct i40e_hw *hw;
10355         static u16 pfs_found;
10356         u16 wol_nvm_bits;
10357         u16 link_status;
10358         int err;
10359         u32 len;
10360         u32 val;
10361         u32 i;
10362         u8 set_fc_aq_fail;
10363
10364         err = pci_enable_device_mem(pdev);
10365         if (err)
10366                 return err;
10367
10368         /* set up for high or low dma */
10369         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10370         if (err) {
10371                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10372                 if (err) {
10373                         dev_err(&pdev->dev,
10374                                 "DMA configuration failed: 0x%x\n", err);
10375                         goto err_dma;
10376                 }
10377         }
10378
10379         /* set up pci connections */
10380         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10381                                            IORESOURCE_MEM), i40e_driver_name);
10382         if (err) {
10383                 dev_info(&pdev->dev,
10384                          "pci_request_selected_regions failed %d\n", err);
10385                 goto err_pci_reg;
10386         }
10387
10388         pci_enable_pcie_error_reporting(pdev);
10389         pci_set_master(pdev);
10390
10391         /* Now that we have a PCI connection, we need to do the
10392          * low level device setup.  This is primarily setting up
10393          * the Admin Queue structures and then querying for the
10394          * device's current profile information.
10395          */
10396         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10397         if (!pf) {
10398                 err = -ENOMEM;
10399                 goto err_pf_alloc;
10400         }
10401         pf->next_vsi = 0;
10402         pf->pdev = pdev;
10403         set_bit(__I40E_DOWN, &pf->state);
10404
10405         hw = &pf->hw;
10406         hw->back = pf;
10407
10408         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10409                                 I40E_MAX_CSR_SPACE);
10410
10411         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10412         if (!hw->hw_addr) {
10413                 err = -EIO;
10414                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10415                          (unsigned int)pci_resource_start(pdev, 0),
10416                          pf->ioremap_len, err);
10417                 goto err_ioremap;
10418         }
10419         hw->vendor_id = pdev->vendor;
10420         hw->device_id = pdev->device;
10421         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10422         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10423         hw->subsystem_device_id = pdev->subsystem_device;
10424         hw->bus.device = PCI_SLOT(pdev->devfn);
10425         hw->bus.func = PCI_FUNC(pdev->devfn);
10426         pf->instance = pfs_found;
10427
10428         if (debug != -1) {
10429                 pf->msg_enable = pf->hw.debug_mask;
10430                 pf->msg_enable = debug;
10431         }
10432
10433         /* do a special CORER for clearing PXE mode once at init */
10434         if (hw->revision_id == 0 &&
10435             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10436                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10437                 i40e_flush(hw);
10438                 msleep(200);
10439                 pf->corer_count++;
10440
10441                 i40e_clear_pxe_mode(hw);
10442         }
10443
10444         /* Reset here to make sure all is clean and to define PF 'n' */
10445         i40e_clear_hw(hw);
10446         err = i40e_pf_reset(hw);
10447         if (err) {
10448                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10449                 goto err_pf_reset;
10450         }
10451         pf->pfr_count++;
10452
10453         hw->aq.num_arq_entries = I40E_AQ_LEN;
10454         hw->aq.num_asq_entries = I40E_AQ_LEN;
10455         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10456         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10457         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10458
10459         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10460                  "%s-%s:misc",
10461                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10462
10463         err = i40e_init_shared_code(hw);
10464         if (err) {
10465                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10466                          err);
10467                 goto err_pf_reset;
10468         }
10469
10470         /* set up a default setting for link flow control */
10471         pf->hw.fc.requested_mode = I40E_FC_NONE;
10472
10473         err = i40e_init_adminq(hw);
10474         if (err) {
10475                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10476                         dev_info(&pdev->dev,
10477                                  "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");
10478                 else
10479                         dev_info(&pdev->dev,
10480                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10481
10482                 goto err_pf_reset;
10483         }
10484
10485         /* provide nvm, fw, api versions */
10486         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10487                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10488                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10489                  i40e_nvm_version_str(hw));
10490
10491         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10492             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10493                 dev_info(&pdev->dev,
10494                          "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");
10495         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10496                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10497                 dev_info(&pdev->dev,
10498                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10499
10500         i40e_verify_eeprom(pf);
10501
10502         /* Rev 0 hardware was never productized */
10503         if (hw->revision_id < 1)
10504                 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");
10505
10506         i40e_clear_pxe_mode(hw);
10507         err = i40e_get_capabilities(pf);
10508         if (err)
10509                 goto err_adminq_setup;
10510
10511         err = i40e_sw_init(pf);
10512         if (err) {
10513                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10514                 goto err_sw_init;
10515         }
10516
10517         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10518                                 hw->func_caps.num_rx_qp,
10519                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10520         if (err) {
10521                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10522                 goto err_init_lan_hmc;
10523         }
10524
10525         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10526         if (err) {
10527                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10528                 err = -ENOENT;
10529                 goto err_configure_lan_hmc;
10530         }
10531
10532         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10533          * Ignore error return codes because if it was already disabled via
10534          * hardware settings this will fail
10535          */
10536         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10537             (pf->hw.aq.fw_maj_ver < 4)) {
10538                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10539                 i40e_aq_stop_lldp(hw, true, NULL);
10540         }
10541
10542         i40e_get_mac_addr(hw, hw->mac.addr);
10543         if (!is_valid_ether_addr(hw->mac.addr)) {
10544                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10545                 err = -EIO;
10546                 goto err_mac_addr;
10547         }
10548         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10549         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10550         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10551         if (is_valid_ether_addr(hw->mac.port_addr))
10552                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10553 #ifdef I40E_FCOE
10554         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10555         if (err)
10556                 dev_info(&pdev->dev,
10557                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10558         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10559                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10560                          hw->mac.san_addr);
10561                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10562         }
10563         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10564 #endif /* I40E_FCOE */
10565
10566         pci_set_drvdata(pdev, pf);
10567         pci_save_state(pdev);
10568 #ifdef CONFIG_I40E_DCB
10569         err = i40e_init_pf_dcb(pf);
10570         if (err) {
10571                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10572                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10573                 /* Continue without DCB enabled */
10574         }
10575 #endif /* CONFIG_I40E_DCB */
10576
10577         /* set up periodic task facility */
10578         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10579         pf->service_timer_period = HZ;
10580
10581         INIT_WORK(&pf->service_task, i40e_service_task);
10582         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10583         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10584
10585         /* NVM bit on means WoL disabled for the port */
10586         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10587         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10588                 pf->wol_en = false;
10589         else
10590                 pf->wol_en = true;
10591         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10592
10593         /* set up the main switch operations */
10594         i40e_determine_queue_usage(pf);
10595         err = i40e_init_interrupt_scheme(pf);
10596         if (err)
10597                 goto err_switch_setup;
10598
10599         /* The number of VSIs reported by the FW is the minimum guaranteed
10600          * to us; HW supports far more and we share the remaining pool with
10601          * the other PFs. We allocate space for more than the guarantee with
10602          * the understanding that we might not get them all later.
10603          */
10604         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10605                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10606         else
10607                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10608
10609         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10610         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10611         pf->vsi = kzalloc(len, GFP_KERNEL);
10612         if (!pf->vsi) {
10613                 err = -ENOMEM;
10614                 goto err_switch_setup;
10615         }
10616
10617 #ifdef CONFIG_PCI_IOV
10618         /* prep for VF support */
10619         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10620             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10621             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10622                 if (pci_num_vf(pdev))
10623                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10624         }
10625 #endif
10626         err = i40e_setup_pf_switch(pf, false);
10627         if (err) {
10628                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10629                 goto err_vsis;
10630         }
10631
10632         /* Make sure flow control is set according to current settings */
10633         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10634         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10635                 dev_dbg(&pf->pdev->dev,
10636                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10637                         i40e_stat_str(hw, err),
10638                         i40e_aq_str(hw, hw->aq.asq_last_status));
10639         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10640                 dev_dbg(&pf->pdev->dev,
10641                         "Set fc with err %s aq_err %s on set_phy_config\n",
10642                         i40e_stat_str(hw, err),
10643                         i40e_aq_str(hw, hw->aq.asq_last_status));
10644         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10645                 dev_dbg(&pf->pdev->dev,
10646                         "Set fc with err %s aq_err %s on get_link_info\n",
10647                         i40e_stat_str(hw, err),
10648                         i40e_aq_str(hw, hw->aq.asq_last_status));
10649
10650         /* if FDIR VSI was set up, start it now */
10651         for (i = 0; i < pf->num_alloc_vsi; i++) {
10652                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10653                         i40e_vsi_open(pf->vsi[i]);
10654                         break;
10655                 }
10656         }
10657
10658         /* driver is only interested in link up/down and module qualification
10659          * reports from firmware
10660          */
10661         err = i40e_aq_set_phy_int_mask(&pf->hw,
10662                                        I40E_AQ_EVENT_LINK_UPDOWN |
10663                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10664         if (err)
10665                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10666                          i40e_stat_str(&pf->hw, err),
10667                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10668
10669         /* Reconfigure hardware for allowing smaller MSS in the case
10670          * of TSO, so that we avoid the MDD being fired and causing
10671          * a reset in the case of small MSS+TSO.
10672          */
10673         val = rd32(hw, I40E_REG_MSS);
10674         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10675                 val &= ~I40E_REG_MSS_MIN_MASK;
10676                 val |= I40E_64BYTE_MSS;
10677                 wr32(hw, I40E_REG_MSS, val);
10678         }
10679
10680         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10681             (pf->hw.aq.fw_maj_ver < 4)) {
10682                 msleep(75);
10683                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10684                 if (err)
10685                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10686                                  i40e_stat_str(&pf->hw, err),
10687                                  i40e_aq_str(&pf->hw,
10688                                              pf->hw.aq.asq_last_status));
10689         }
10690         /* The main driver is (mostly) up and happy. We need to set this state
10691          * before setting up the misc vector or we get a race and the vector
10692          * ends up disabled forever.
10693          */
10694         clear_bit(__I40E_DOWN, &pf->state);
10695
10696         /* In case of MSIX we are going to setup the misc vector right here
10697          * to handle admin queue events etc. In case of legacy and MSI
10698          * the misc functionality and queue processing is combined in
10699          * the same vector and that gets setup at open.
10700          */
10701         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10702                 err = i40e_setup_misc_vector(pf);
10703                 if (err) {
10704                         dev_info(&pdev->dev,
10705                                  "setup of misc vector failed: %d\n", err);
10706                         goto err_vsis;
10707                 }
10708         }
10709
10710 #ifdef CONFIG_PCI_IOV
10711         /* prep for VF support */
10712         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10713             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10714             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10715                 u32 val;
10716
10717                 /* disable link interrupts for VFs */
10718                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10719                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10720                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10721                 i40e_flush(hw);
10722
10723                 if (pci_num_vf(pdev)) {
10724                         dev_info(&pdev->dev,
10725                                  "Active VFs found, allocating resources.\n");
10726                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10727                         if (err)
10728                                 dev_info(&pdev->dev,
10729                                          "Error %d allocating resources for existing VFs\n",
10730                                          err);
10731                 }
10732         }
10733 #endif /* CONFIG_PCI_IOV */
10734
10735         pfs_found++;
10736
10737         i40e_dbg_pf_init(pf);
10738
10739         /* tell the firmware that we're starting */
10740         i40e_send_version(pf);
10741
10742         /* since everything's happy, start the service_task timer */
10743         mod_timer(&pf->service_timer,
10744                   round_jiffies(jiffies + pf->service_timer_period));
10745
10746 #ifdef I40E_FCOE
10747         /* create FCoE interface */
10748         i40e_fcoe_vsi_setup(pf);
10749
10750 #endif
10751 #define PCI_SPEED_SIZE 8
10752 #define PCI_WIDTH_SIZE 8
10753         /* Devices on the IOSF bus do not have this information
10754          * and will report PCI Gen 1 x 1 by default so don't bother
10755          * checking them.
10756          */
10757         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10758                 char speed[PCI_SPEED_SIZE] = "Unknown";
10759                 char width[PCI_WIDTH_SIZE] = "Unknown";
10760
10761                 /* Get the negotiated link width and speed from PCI config
10762                  * space
10763                  */
10764                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10765                                           &link_status);
10766
10767                 i40e_set_pci_config_data(hw, link_status);
10768
10769                 switch (hw->bus.speed) {
10770                 case i40e_bus_speed_8000:
10771                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10772                 case i40e_bus_speed_5000:
10773                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10774                 case i40e_bus_speed_2500:
10775                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10776                 default:
10777                         break;
10778                 }
10779                 switch (hw->bus.width) {
10780                 case i40e_bus_width_pcie_x8:
10781                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10782                 case i40e_bus_width_pcie_x4:
10783                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10784                 case i40e_bus_width_pcie_x2:
10785                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10786                 case i40e_bus_width_pcie_x1:
10787                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10788                 default:
10789                         break;
10790                 }
10791
10792                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10793                          speed, width);
10794
10795                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10796                     hw->bus.speed < i40e_bus_speed_8000) {
10797                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10798                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10799                 }
10800         }
10801
10802         /* get the requested speeds from the fw */
10803         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10804         if (err)
10805                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10806                         i40e_stat_str(&pf->hw, err),
10807                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10808         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10809
10810         /* get the supported phy types from the fw */
10811         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10812         if (err)
10813                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10814                         i40e_stat_str(&pf->hw, err),
10815                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10816         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10817
10818         /* Add a filter to drop all Flow control frames from any VSI from being
10819          * transmitted. By doing so we stop a malicious VF from sending out
10820          * PAUSE or PFC frames and potentially controlling traffic for other
10821          * PF/VF VSIs.
10822          * The FW can still send Flow control frames if enabled.
10823          */
10824         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10825                                                        pf->main_vsi_seid);
10826
10827         /* print a string summarizing features */
10828         i40e_print_features(pf);
10829
10830         return 0;
10831
10832         /* Unwind what we've done if something failed in the setup */
10833 err_vsis:
10834         set_bit(__I40E_DOWN, &pf->state);
10835         i40e_clear_interrupt_scheme(pf);
10836         kfree(pf->vsi);
10837 err_switch_setup:
10838         i40e_reset_interrupt_capability(pf);
10839         del_timer_sync(&pf->service_timer);
10840 err_mac_addr:
10841 err_configure_lan_hmc:
10842         (void)i40e_shutdown_lan_hmc(hw);
10843 err_init_lan_hmc:
10844         kfree(pf->qp_pile);
10845 err_sw_init:
10846 err_adminq_setup:
10847         (void)i40e_shutdown_adminq(hw);
10848 err_pf_reset:
10849         iounmap(hw->hw_addr);
10850 err_ioremap:
10851         kfree(pf);
10852 err_pf_alloc:
10853         pci_disable_pcie_error_reporting(pdev);
10854         pci_release_selected_regions(pdev,
10855                                      pci_select_bars(pdev, IORESOURCE_MEM));
10856 err_pci_reg:
10857 err_dma:
10858         pci_disable_device(pdev);
10859         return err;
10860 }
10861
10862 /**
10863  * i40e_remove - Device removal routine
10864  * @pdev: PCI device information struct
10865  *
10866  * i40e_remove is called by the PCI subsystem to alert the driver
10867  * that is should release a PCI device.  This could be caused by a
10868  * Hot-Plug event, or because the driver is going to be removed from
10869  * memory.
10870  **/
10871 static void i40e_remove(struct pci_dev *pdev)
10872 {
10873         struct i40e_pf *pf = pci_get_drvdata(pdev);
10874         struct i40e_hw *hw = &pf->hw;
10875         i40e_status ret_code;
10876         int i;
10877
10878         i40e_dbg_pf_exit(pf);
10879
10880         i40e_ptp_stop(pf);
10881
10882         /* Disable RSS in hw */
10883         wr32(hw, I40E_PFQF_HENA(0), 0);
10884         wr32(hw, I40E_PFQF_HENA(1), 0);
10885
10886         /* no more scheduling of any task */
10887         set_bit(__I40E_DOWN, &pf->state);
10888         del_timer_sync(&pf->service_timer);
10889         cancel_work_sync(&pf->service_task);
10890         i40e_fdir_teardown(pf);
10891
10892         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10893                 i40e_free_vfs(pf);
10894                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10895         }
10896
10897         i40e_fdir_teardown(pf);
10898
10899         /* If there is a switch structure or any orphans, remove them.
10900          * This will leave only the PF's VSI remaining.
10901          */
10902         for (i = 0; i < I40E_MAX_VEB; i++) {
10903                 if (!pf->veb[i])
10904                         continue;
10905
10906                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10907                     pf->veb[i]->uplink_seid == 0)
10908                         i40e_switch_branch_release(pf->veb[i]);
10909         }
10910
10911         /* Now we can shutdown the PF's VSI, just before we kill
10912          * adminq and hmc.
10913          */
10914         if (pf->vsi[pf->lan_vsi])
10915                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10916
10917         /* shutdown and destroy the HMC */
10918         if (pf->hw.hmc.hmc_obj) {
10919                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10920                 if (ret_code)
10921                         dev_warn(&pdev->dev,
10922                                  "Failed to destroy the HMC resources: %d\n",
10923                                  ret_code);
10924         }
10925
10926         /* shutdown the adminq */
10927         ret_code = i40e_shutdown_adminq(&pf->hw);
10928         if (ret_code)
10929                 dev_warn(&pdev->dev,
10930                          "Failed to destroy the Admin Queue resources: %d\n",
10931                          ret_code);
10932
10933         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10934         i40e_clear_interrupt_scheme(pf);
10935         for (i = 0; i < pf->num_alloc_vsi; i++) {
10936                 if (pf->vsi[i]) {
10937                         i40e_vsi_clear_rings(pf->vsi[i]);
10938                         i40e_vsi_clear(pf->vsi[i]);
10939                         pf->vsi[i] = NULL;
10940                 }
10941         }
10942
10943         for (i = 0; i < I40E_MAX_VEB; i++) {
10944                 kfree(pf->veb[i]);
10945                 pf->veb[i] = NULL;
10946         }
10947
10948         kfree(pf->qp_pile);
10949         kfree(pf->vsi);
10950
10951         iounmap(pf->hw.hw_addr);
10952         kfree(pf);
10953         pci_release_selected_regions(pdev,
10954                                      pci_select_bars(pdev, IORESOURCE_MEM));
10955
10956         pci_disable_pcie_error_reporting(pdev);
10957         pci_disable_device(pdev);
10958 }
10959
10960 /**
10961  * i40e_pci_error_detected - warning that something funky happened in PCI land
10962  * @pdev: PCI device information struct
10963  *
10964  * Called to warn that something happened and the error handling steps
10965  * are in progress.  Allows the driver to quiesce things, be ready for
10966  * remediation.
10967  **/
10968 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10969                                                 enum pci_channel_state error)
10970 {
10971         struct i40e_pf *pf = pci_get_drvdata(pdev);
10972
10973         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10974
10975         /* shutdown all operations */
10976         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10977                 rtnl_lock();
10978                 i40e_prep_for_reset(pf);
10979                 rtnl_unlock();
10980         }
10981
10982         /* Request a slot reset */
10983         return PCI_ERS_RESULT_NEED_RESET;
10984 }
10985
10986 /**
10987  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10988  * @pdev: PCI device information struct
10989  *
10990  * Called to find if the driver can work with the device now that
10991  * the pci slot has been reset.  If a basic connection seems good
10992  * (registers are readable and have sane content) then return a
10993  * happy little PCI_ERS_RESULT_xxx.
10994  **/
10995 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10996 {
10997         struct i40e_pf *pf = pci_get_drvdata(pdev);
10998         pci_ers_result_t result;
10999         int err;
11000         u32 reg;
11001
11002         dev_dbg(&pdev->dev, "%s\n", __func__);
11003         if (pci_enable_device_mem(pdev)) {
11004                 dev_info(&pdev->dev,
11005                          "Cannot re-enable PCI device after reset.\n");
11006                 result = PCI_ERS_RESULT_DISCONNECT;
11007         } else {
11008                 pci_set_master(pdev);
11009                 pci_restore_state(pdev);
11010                 pci_save_state(pdev);
11011                 pci_wake_from_d3(pdev, false);
11012
11013                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11014                 if (reg == 0)
11015                         result = PCI_ERS_RESULT_RECOVERED;
11016                 else
11017                         result = PCI_ERS_RESULT_DISCONNECT;
11018         }
11019
11020         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11021         if (err) {
11022                 dev_info(&pdev->dev,
11023                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11024                          err);
11025                 /* non-fatal, continue */
11026         }
11027
11028         return result;
11029 }
11030
11031 /**
11032  * i40e_pci_error_resume - restart operations after PCI error recovery
11033  * @pdev: PCI device information struct
11034  *
11035  * Called to allow the driver to bring things back up after PCI error
11036  * and/or reset recovery has finished.
11037  **/
11038 static void i40e_pci_error_resume(struct pci_dev *pdev)
11039 {
11040         struct i40e_pf *pf = pci_get_drvdata(pdev);
11041
11042         dev_dbg(&pdev->dev, "%s\n", __func__);
11043         if (test_bit(__I40E_SUSPENDED, &pf->state))
11044                 return;
11045
11046         rtnl_lock();
11047         i40e_handle_reset_warning(pf);
11048         rtnl_unlock();
11049 }
11050
11051 /**
11052  * i40e_shutdown - PCI callback for shutting down
11053  * @pdev: PCI device information struct
11054  **/
11055 static void i40e_shutdown(struct pci_dev *pdev)
11056 {
11057         struct i40e_pf *pf = pci_get_drvdata(pdev);
11058         struct i40e_hw *hw = &pf->hw;
11059
11060         set_bit(__I40E_SUSPENDED, &pf->state);
11061         set_bit(__I40E_DOWN, &pf->state);
11062         rtnl_lock();
11063         i40e_prep_for_reset(pf);
11064         rtnl_unlock();
11065
11066         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11067         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11068
11069         del_timer_sync(&pf->service_timer);
11070         cancel_work_sync(&pf->service_task);
11071         i40e_fdir_teardown(pf);
11072
11073         rtnl_lock();
11074         i40e_prep_for_reset(pf);
11075         rtnl_unlock();
11076
11077         wr32(hw, I40E_PFPM_APM,
11078              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11079         wr32(hw, I40E_PFPM_WUFC,
11080              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11081
11082         i40e_clear_interrupt_scheme(pf);
11083
11084         if (system_state == SYSTEM_POWER_OFF) {
11085                 pci_wake_from_d3(pdev, pf->wol_en);
11086                 pci_set_power_state(pdev, PCI_D3hot);
11087         }
11088 }
11089
11090 #ifdef CONFIG_PM
11091 /**
11092  * i40e_suspend - PCI callback for moving to D3
11093  * @pdev: PCI device information struct
11094  **/
11095 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11096 {
11097         struct i40e_pf *pf = pci_get_drvdata(pdev);
11098         struct i40e_hw *hw = &pf->hw;
11099
11100         set_bit(__I40E_SUSPENDED, &pf->state);
11101         set_bit(__I40E_DOWN, &pf->state);
11102
11103         rtnl_lock();
11104         i40e_prep_for_reset(pf);
11105         rtnl_unlock();
11106
11107         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11108         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11109
11110         pci_wake_from_d3(pdev, pf->wol_en);
11111         pci_set_power_state(pdev, PCI_D3hot);
11112
11113         return 0;
11114 }
11115
11116 /**
11117  * i40e_resume - PCI callback for waking up from D3
11118  * @pdev: PCI device information struct
11119  **/
11120 static int i40e_resume(struct pci_dev *pdev)
11121 {
11122         struct i40e_pf *pf = pci_get_drvdata(pdev);
11123         u32 err;
11124
11125         pci_set_power_state(pdev, PCI_D0);
11126         pci_restore_state(pdev);
11127         /* pci_restore_state() clears dev->state_saves, so
11128          * call pci_save_state() again to restore it.
11129          */
11130         pci_save_state(pdev);
11131
11132         err = pci_enable_device_mem(pdev);
11133         if (err) {
11134                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11135                 return err;
11136         }
11137         pci_set_master(pdev);
11138
11139         /* no wakeup events while running */
11140         pci_wake_from_d3(pdev, false);
11141
11142         /* handling the reset will rebuild the device state */
11143         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11144                 clear_bit(__I40E_DOWN, &pf->state);
11145                 rtnl_lock();
11146                 i40e_reset_and_rebuild(pf, false);
11147                 rtnl_unlock();
11148         }
11149
11150         return 0;
11151 }
11152
11153 #endif
11154 static const struct pci_error_handlers i40e_err_handler = {
11155         .error_detected = i40e_pci_error_detected,
11156         .slot_reset = i40e_pci_error_slot_reset,
11157         .resume = i40e_pci_error_resume,
11158 };
11159
11160 static struct pci_driver i40e_driver = {
11161         .name     = i40e_driver_name,
11162         .id_table = i40e_pci_tbl,
11163         .probe    = i40e_probe,
11164         .remove   = i40e_remove,
11165 #ifdef CONFIG_PM
11166         .suspend  = i40e_suspend,
11167         .resume   = i40e_resume,
11168 #endif
11169         .shutdown = i40e_shutdown,
11170         .err_handler = &i40e_err_handler,
11171         .sriov_configure = i40e_pci_sriov_configure,
11172 };
11173
11174 /**
11175  * i40e_init_module - Driver registration routine
11176  *
11177  * i40e_init_module is the first routine called when the driver is
11178  * loaded. All it does is register with the PCI subsystem.
11179  **/
11180 static int __init i40e_init_module(void)
11181 {
11182         pr_info("%s: %s - version %s\n", i40e_driver_name,
11183                 i40e_driver_string, i40e_driver_version_str);
11184         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11185
11186         i40e_dbg_init();
11187         return pci_register_driver(&i40e_driver);
11188 }
11189 module_init(i40e_init_module);
11190
11191 /**
11192  * i40e_exit_module - Driver exit cleanup routine
11193  *
11194  * i40e_exit_module is called just before the driver is removed
11195  * from memory.
11196  **/
11197 static void __exit i40e_exit_module(void)
11198 {
11199         pci_unregister_driver(&i40e_driver);
11200         i40e_dbg_exit();
11201 }
11202 module_exit(i40e_exit_module);